/* ============================================
   白兰地小屋 - Cyberpunk Gaming Theme
   ============================================ */

:root {
    --bg-primary: #f3f2f0;
    --bg-secondary: #faf9f7;
    --bg-card: #ffffff;
    --bg-card-hover: #f5f4f2;
    --accent-cyan: #0098c7;
    --accent-cyan-dim: rgba(0, 152, 199, 0.08);
    --accent-cyan-glow: rgba(0, 152, 199, 0.25);
    --accent-amber: #e8950a;
    --accent-amber-dim: rgba(232, 149, 10, 0.08);
    --accent-amber-glow: rgba(232, 149, 10, 0.25);
    --text-primary: #1a1d28;
    --text-secondary: #5c6070;
    --text-muted: #9296a4;
    --border-color: rgba(0, 0, 0, 0.07);
    --border-glow-cyan: rgba(0, 152, 199, 0.22);
    --border-glow-amber: rgba(232, 149, 10, 0.22);
    --gradient-cyan: linear-gradient(135deg, #0098c7, #007aab);
    --gradient-amber: linear-gradient(135deg, #e8950a, #c97d08);
    --gradient-hero: linear-gradient(160deg, #e8ebf0 0%, #e2e8f5 25%, #f3f2f0 50%, #efeaf3 75%, #eef0f4 100%);
    --shadow-cyan: 0 0 30px rgba(0, 152, 199, 0.12);
    --shadow-amber: 0 0 30px rgba(232, 149, 10, 0.12);
    --card-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 16px rgba(0,0,0,0.04);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --font-heading: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-body: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --nav-height: 72px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 17px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 70% 60% at 15% 10%, rgba(0, 152, 199, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse 50% 50% at 85% 90%, rgba(147, 130, 200, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse 40% 30% at 60% 40%, rgba(232, 149, 10, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

#particleCanvas {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

.page-content {
    position: relative;
    z-index: 1;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    border: none;
    outline: none;
    cursor: pointer;
    font-family: var(--font-body);
}

/* ============================================
   Navbar
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    background: rgba(15, 23, 42, 0.35);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.7);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--accent-cyan);
    text-shadow: 0 0 20px var(--accent-cyan-glow);
    flex-shrink: 0;
}

.logo-icon {
    font-size: 1.4rem;
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { text-shadow: 0 0 10px var(--accent-cyan-glow); }
    50% { text-shadow: 0 0 25px var(--accent-cyan-glow), 0 0 50px rgba(0, 212, 255, 0.2); }
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0;
    flex: 1;
    justify-content: center;
}

/* 胶囊容器 */
.nav-pill {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 6px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 999px;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 0 rgba(255, 255, 255, 0.05);
}

/* 滑动指示器 */
.nav-pill-indicator {
    position: absolute;
    top: 4px;
    left: 0;
    height: calc(100% - 8px);
    background: #0098c7;
    border-radius: 999px;
    transition: none;
    z-index: 1;
    pointer-events: none;
}

/* 指示器就绪后才启用滑动动画 */
.nav-pill-indicator.ready {
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), width 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 导航链接 */
.nav-link,
.nav-link:link,
.nav-link:visited,
.nav-link:hover,
.nav-link:focus,
.nav-link:active {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 0.82rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.65);
    transition: color 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 8px 22px;
    border-radius: 999px;
    white-space: nowrap;
    letter-spacing: 0.3px;
    text-decoration: none !important;
    border: none !important;
    outline: none !important;
    background: none !important;
    box-shadow: none !important;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
}

.nav-link:hover {
    color: rgba(255, 255, 255, 0.95);
}

.nav-link.active {
    color: #fff;
}

/* 强制清除所有可能的伪元素装饰 */
.nav-link::before,
.nav-link::after,
.nav-link:hover::before,
.nav-link:hover::after,
.nav-link.active::before,
.nav-link.active::after {
    display: none !important;
    content: none !important;
    width: 0 !important;
    height: 0 !important;
    background: none !important;
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    padding: 10px 24px;
    background: var(--gradient-cyan);
    color: #fff;
    font-weight: 600;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    letter-spacing: 0.3px;
    flex-shrink: 0;
}

.nav-cta:hover {
    box-shadow: var(--shadow-cyan);
    transform: translateY(-1px);
}

.nav-mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    padding: 4px;
}

.nav-mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: var(--transition);
}

.nav-mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.92);
    backdrop-filter: blur(20px);
    padding: 24px;
    z-index: 999;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transform: translateY(-20px);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

.mobile-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
}

.mobile-link {
    display: block;
    padding: 14px 0;
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transition: var(--transition);
}

.mobile-link:hover {
    color: #22d3ee;
}

.mobile-cta {
    display: inline-block;
    margin-top: 16px;
    padding: 12px 28px;
    background: var(--gradient-cyan);
    color: #000;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border-bottom: none;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    height: 100svh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--gradient-hero);
}

@supports not (height: 100svh) {
    .hero {
        height: 100vh;
    }
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/cesuo.v2.jpg') center 38% / cover no-repeat;
    z-index: 0;
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(15,23,42,0.6) 0%, rgba(15,23,42,0.5) 30%, rgba(15,23,42,0.55) 50%, rgba(15,23,42,0.75) 70%, rgba(15,23,42,0.88) 85%, rgba(15,23,42,0.95) 93%, var(--bg-primary) 100%);
    pointer-events: none;
    z-index: 1;
}

.hero-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-particles canvas {
    width: 100%;
    height: 100%;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    pointer-events: none;
}

.hero-glow.cyan {
    top: 10%;
    left: 20%;
    background: var(--accent-cyan);
}

.hero-glow.amber {
    bottom: 10%;
    right: 20%;
    background: var(--accent-amber);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: calc(var(--nav-height) + 20px) 24px 0;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(0, 152, 199, 0.2);
    border: 1px solid rgba(0, 212, 255, 0.35);
    border-radius: 50px;
    font-size: 0.8rem;
    color: #67e8f9;
    font-weight: 500;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease;
}

.hero-badge .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-cyan);
    animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 7vw, 5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 16px;
    animation: fadeInUp 0.8s ease 0.1s both;
    color: #f1f5f9;
    text-shadow: 0 2px 8px rgba(0,0,0,0.5);
}

.hero-title .cyan {
    color: #22d3ee;
    text-shadow: 0 0 40px rgba(0, 212, 255, 0.4);
}

.hero-title .amber {
    color: #fbbf24;
    text-shadow: 0 0 40px rgba(245, 158, 11, 0.4);
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: #cbd5e1;
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease 0.2s both;
    text-shadow: 0 1px 4px rgba(0,0,0,0.4);
}

.hero-subtitle span {
    color: #22d3ee;
    font-weight: 600;
}

.hero-highlight {
    font-size: clamp(0.9rem, 1.6vw, 1.05rem);
    font-weight: 700;
    margin-top: 20px;
    animation: fadeInUp 0.8s ease 0.35s both;
    color: #e2e8f0;
    text-shadow: 0 1px 4px rgba(0,0,0,0.4);
}

.hero-highlight .hl-bp {
    color: #60a5fa;
}

.hero-highlight .hl-jy {
    color: #fbbf24;
}

.hero-note {
    font-size: clamp(0.875rem, 1.5vw, 1rem);
    color: #94a3b8;
    margin-top: 6px;
    opacity: 0.9;
    animation: fadeInUp 0.8s ease 0.4s both;
    text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.hero-subsidy-badge {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    margin-top: 20px;
    padding: 18px 30px 18px 22px;
    background: linear-gradient(135deg, #fff7ed, #fef3c7, #fde68a);
    border: 1px solid #f59e0b;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    animation: fadeInUp 0.8s ease 0.5s both, subsidyPulse 2.5s ease-in-out infinite;
    box-shadow: 0 2px 12px rgba(245,158,11,0.25), inset 0 1px 0 rgba(255,255,255,0.6);
}
.hero-subsidy-badge:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 6px 24px rgba(245,158,11,0.35), inset 0 1px 0 rgba(255,255,255,0.6);
    border-color: #d97706;
}
@keyframes subsidyPulse {
    0%, 100% { box-shadow: 0 2px 12px rgba(245,158,11,0.25), inset 0 1px 0 rgba(255,255,255,0.6); }
    50% { box-shadow: 0 4px 20px rgba(245,158,11,0.45), inset 0 1px 0 rgba(255,255,255,0.6); }
}
.subsidy-badge-icon {
    font-size: 1.7rem;
    animation: badgeBounce 1.5s ease infinite alternate;
}
@keyframes badgeBounce {
    from { transform: scale(1) rotate(-8deg); }
    to { transform: scale(1.15) rotate(8deg); }
}
.subsidy-badge-text {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}
.subsidy-badge-text strong {
    font-size: 1.05rem;
    color: #92400e;
    font-weight: 800;
    letter-spacing: 0.3px;
}
.subsidy-badge-text em {
    font-size: 0.84rem;
    color: #b45309;
    font-style: normal;
    font-weight: 500;
}
.subsidy-badge-arrow {
    font-size: 1.35rem;
    color: #d97706;
    font-weight: 800;
    transition: transform 0.3s;
}
.hero-subsidy-badge:hover .subsidy-badge-arrow {
    transform: translateX(3px);
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.3s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: pointer;
    border: none;
    letter-spacing: 0.3px;
}

.btn-primary {
    background: var(--gradient-cyan);
    color: #000;
}

.btn-primary:hover {
    box-shadow: 0 0 30px var(--accent-cyan-glow);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-modal-cancel {
    background: #ffffff;
    color: var(--text-secondary);
    border: 1px solid rgba(0, 0, 0, 0.12);
}

.btn-modal-cancel:hover {
    background: var(--bg-primary);
    border-color: rgba(0, 0, 0, 0.2);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.btn-secondary:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.1);
}

.btn-buy {
    background: linear-gradient(135deg, #f59e0b, #d97706, #b45309);
    color: #fff;
    position: relative;
    overflow: hidden;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
    border: 1px solid rgba(245, 158, 11, 0.4);
}

.btn-buy::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.25), rgba(255,255,255,0.05) 40%, transparent 60%);
    pointer-events: none;
}

.btn-buy::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(180deg, rgba(255,255,255,0.12), transparent);
    pointer-events: none;
}

.btn-buy:hover {
    background: linear-gradient(135deg, #fbbf24, #f59e0b, #d97706);
    box-shadow: 0 4px 24px var(--accent-amber-glow), 0 0 40px rgba(232, 149, 10, 0.15), inset 0 1px 0 rgba(255,255,255,0.2);
    transform: translateY(-2px) scale(1.02);
    border-color: rgba(251, 191, 36, 0.6);
}

.btn-amber {
    background: var(--gradient-amber);
    color: #000;
}

.btn-amber:hover {
    box-shadow: 0 0 30px var(--accent-amber-glow);
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 40px;
    font-size: 1rem;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* ============================================
   Section Styles
   ============================================ */
.section {
    padding: 100px 24px;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.section::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
    opacity: 0.3;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.section-label::before, .section-label::after {
    content: '';
    width: 30px;
    height: 1px;
    background: var(--accent-cyan);
    opacity: 0.5;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   Product Showcase (Home) - Split Layout
   ============================================ */
.products-showcase {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.product-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 48px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.product-row::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
}

.product-row.cyan::before {
    background: var(--gradient-cyan);
}

.product-row.amber::before {
    background: var(--gradient-amber);
}

.product-row:hover {
    border-color: rgba(255, 255, 255, 0.1);
}

.product-row.cyan:hover {
    box-shadow: var(--shadow-cyan);
    border-color: var(--border-glow-cyan);
}

.product-row.amber:hover {
    box-shadow: var(--shadow-amber);
    border-color: var(--border-glow-amber);
}

.product-row-info {
    position: relative;
    z-index: 1;
}

/* 产品页轮播展示框：当前选中高亮 / 非当前淡化 */
.product-row.row-active {
    border-width: 2px;
}
.product-row.cyan.row-active {
    border-color: var(--border-glow-cyan);
    box-shadow: var(--shadow-cyan);
}
.product-row.amber.row-active {
    border-color: var(--border-glow-amber);
    box-shadow: var(--shadow-amber);
}
.product-row.row-inactive {
    opacity: 0.78;
    transition: opacity 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.product-row.row-inactive:hover {
    opacity: 1;
}
.row-switch-hint {
    display: inline-block;
    margin-top: 12px;
    padding: 6px 16px;
    border-radius: 6px;
    background: rgba(8, 145, 178, 0.08);
    color: #0891b2;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.2s;
}
.product-row.amber .row-switch-hint {
    background: rgba(217, 119, 6, 0.08);
    color: #d97706;
}
.product-row-info:hover .row-switch-hint {
    transform: translateX(4px);
}

.product-row-badge {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 1px;
    padding: 10px 24px;
    border-radius: 8px;
    margin-bottom: 16px;
}

.product-row.cyan .product-row-badge {
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 212, 255, 0.25);
}

.product-row.amber .product-row-badge {
    background: var(--accent-amber-dim);
    color: var(--accent-amber);
    border: 1px solid rgba(245, 158, 11, 0.25);
}

.product-row-price {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 20px;
}

.product-row-price span {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-muted);
}

.product-row.cyan .product-row-price {
    color: var(--accent-cyan);
}

.product-row.amber .product-row-price {
    color: var(--accent-amber);
}

.product-row-desc {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 28px;
    max-width: 480px;
}

.product-row-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.product-row-actions .btn {
    padding: 11px 22px;
    font-size: 0.85rem;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    isolation: isolate;
}

.product-row-actions .btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 60%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
    pointer-events: none;
    z-index: 2;
}

.product-row-actions .btn:hover::before {
    left: 120%;
}

.product-row-actions .btn:active {
    transform: translateY(1px) scale(0.98);
}

.product-row-actions .btn-trial {
    font-size: 0.8rem;
    padding: 9px 18px;
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(12px) saturate(150%);
    -webkit-backdrop-filter: blur(12px) saturate(150%);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
}

.product-row-actions .btn-trial::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(ellipse at 30% 0%, rgba(255,255,255,0.06), transparent 60%);
    pointer-events: none;
}

.product-row-actions .btn-trial:hover {
    color: var(--text-primary);
}

.product-row.cyan .product-row-actions .btn-trial {
    border-color: rgba(0, 212, 255, 0.15);
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.06), rgba(0, 212, 255, 0.02));
}

.product-row.cyan .product-row-actions .btn-trial::before {
    background: radial-gradient(ellipse at 30% 0%, rgba(0, 212, 255, 0.1), transparent 60%);
}

.product-row.cyan .product-row-actions .btn-trial:hover {
    border-color: rgba(0, 212, 255, 0.4);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.12), inset 0 1px 0 rgba(0, 212, 255, 0.1);
}

.product-row.amber .product-row-actions .btn-trial {
    border-color: rgba(245, 158, 11, 0.15);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.06), rgba(245, 158, 11, 0.02));
}

.product-row.amber .product-row-actions .btn-trial::before {
    background: radial-gradient(ellipse at 30% 0%, rgba(245, 158, 11, 0.1), transparent 60%);
}

.product-row.amber .product-row-actions .btn-trial:hover {
    border-color: rgba(245, 158, 11, 0.4);
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.12), inset 0 1px 0 rgba(245, 158, 11, 0.1);
}

/* Carousel */
.product-row-visual {
    position: relative;
    z-index: 1;
}

.product-carousel {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: #0f172a;
    aspect-ratio: 16/10;
}

.carousel-track {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.55s cubic-bezier(0.4, 0, 0.2, 1), transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
    display: block;
    will-change: transform, opacity;
}

.carousel-slide.active {
    opacity: 1;
    transform: scale(1);
}

/* Arrow buttons */
.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(8px);
    color: #fff;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
}

.product-carousel:hover .carousel-arrow {
    opacity: 1;
}

.carousel-arrow:hover {
    background: rgba(15, 23, 42, 0.9);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-50%) scale(1.1);
}

.carousel-prev { left: 12px; }
.carousel-next { right: 12px; }

.product-row.cyan .carousel-arrow:hover {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 12px rgba(0, 212, 255, 0.2);
}

.product-row.amber .carousel-arrow:hover {
    border-color: var(--accent-amber);
    box-shadow: 0 0 12px rgba(245, 158, 11, 0.2);
}

/* Progress bar */
.carousel-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: rgba(255, 255, 255, 0.08);
    z-index: 3;
}

.carousel-progress-bar {
    height: 100%;
    width: 0%;
    border-radius: 0 2px 2px 0;
}

.product-row.cyan .carousel-progress-bar {
    background: linear-gradient(90deg, var(--accent-cyan), rgba(0, 212, 255, 0.5));
}

.product-row.amber .carousel-progress-bar {
    background: linear-gradient(90deg, var(--accent-amber), rgba(245, 158, 11, 0.5));
}

.carousel-dots {
    position: absolute;
    bottom: 14px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 2;
}

.carousel-dots .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.carousel-dots .dot.active {
    background: #fff;
    transform: scale(1.3);
}

.product-row.cyan .carousel-dots .dot.active {
    background: var(--accent-cyan);
    box-shadow: 0 0 8px var(--accent-cyan-glow);
}

.product-row.amber .carousel-dots .dot.active {
    background: var(--accent-amber);
    box-shadow: 0 0 8px var(--accent-amber-glow);
}

/* Outline buttons - Glassmorphic */
.btn-outline-cyan {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(0, 212, 255, 0.03));
    backdrop-filter: blur(12px) saturate(150%);
    -webkit-backdrop-filter: blur(12px) saturate(150%);
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 212, 255, 0.25);
    text-align: center;
    position: relative;
    overflow: hidden;
    text-shadow: 0 0 12px rgba(0, 212, 255, 0.2);
}

.btn-outline-cyan::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(ellipse at 25% 0%, rgba(0, 212, 255, 0.15), transparent 55%);
    pointer-events: none;
}

.btn-outline-cyan::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1px solid rgba(0, 212, 255, 0.08);
    pointer-events: none;
}

.btn-outline-cyan:hover {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.18), rgba(0, 212, 255, 0.06));
    border-color: rgba(0, 212, 255, 0.5);
    box-shadow: 0 0 24px rgba(0, 212, 255, 0.2), inset 0 1px 0 rgba(0, 212, 255, 0.15);
    transform: translateY(-2px);
}

.btn-outline-amber {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(245, 158, 11, 0.03));
    backdrop-filter: blur(12px) saturate(150%);
    -webkit-backdrop-filter: blur(12px) saturate(150%);
    color: var(--accent-amber);
    border: 1px solid rgba(245, 158, 11, 0.25);
    text-align: center;
    position: relative;
    overflow: hidden;
    text-shadow: 0 0 12px rgba(245, 158, 11, 0.2);
}

.btn-outline-amber::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(ellipse at 25% 0%, rgba(245, 158, 11, 0.15), transparent 55%);
    pointer-events: none;
}

.btn-outline-amber::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1px solid rgba(245, 158, 11, 0.08);
    pointer-events: none;
}

.btn-outline-amber:hover {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.18), rgba(245, 158, 11, 0.06));
    border-color: rgba(245, 158, 11, 0.5);
    box-shadow: 0 0 24px rgba(245, 158, 11, 0.2), inset 0 1px 0 rgba(245, 158, 11, 0.15);
    transform: translateY(-2px);
}

/* ============================================
   Features Section
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(4px);
    position: relative;
    overflow: hidden;
}

.feature-card::after {
    content: '';
    position: absolute;
    bottom: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: var(--accent-cyan);
    filter: blur(80px);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
}

.feature-card:hover::after {
    opacity: 0.06;
}

.feature-card:hover {
    border-color: rgba(0, 212, 255, 0.2);
    transform: translateY(-2px);
}

.feature-icon {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin: 0 auto 20px;
    border: 1px solid rgba(0, 212, 255, 0.15);
}

.feature-title {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.feature-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   Product Detail Page
   ============================================ */
.product-detail {
    padding-top: calc(var(--nav-height) + 20px);
    min-height: 100vh;
    position: relative;
}

.product-detail-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.product-particles-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.product-detail-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.025) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: linear-gradient(to bottom, transparent 0%, black 20%, black 80%, transparent 100%);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 20%, black 80%, transparent 100%);
}

.product-detail-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
}

.product-detail-glow.glow-1 {
    width: 500px;
    height: 500px;
    top: 10%;
    left: 15%;
    background: var(--accent-cyan);
    opacity: 0.06;
    animation: productGlow1 15s ease-in-out infinite alternate;
}

.product-detail-glow.glow-2 {
    width: 400px;
    height: 400px;
    bottom: 15%;
    right: 10%;
    background: var(--accent-amber);
    opacity: 0.04;
    animation: productGlow2 18s ease-in-out infinite alternate;
}

@keyframes productGlow1 {
    0% { transform: translate(0, 0); opacity: 0.06; }
    50% { transform: translate(30px, 20px); opacity: 0.08; }
    100% { transform: translate(-20px, 30px); opacity: 0.05; }
}

@keyframes productGlow2 {
    0% { transform: translate(0, 0); opacity: 0.04; }
    50% { transform: translate(-25px, -15px); opacity: 0.06; }
    100% { transform: translate(15px, -25px); opacity: 0.03; }
}

.product-detail > *:not(.product-detail-bg) {
    position: relative;
    z-index: 1;
}

.product-switcher {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 24px;
    padding: 0 24px;
}

.switcher-btn {
    padding: 12px 24px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.switcher-btn:hover {
    border-color: rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
}

.switcher-btn.active {
    border-color: var(--accent-cyan);
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
}

.switcher-hint {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.product-hero {
    position: relative;
    padding: 60px 24px;
    text-align: center;
    overflow: hidden;
}

.product-hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 60% at 50% 40%, rgba(0, 212, 255, 0.06) 0%, transparent 60%);
}

.product-hero.amber .product-hero-bg {
    background: radial-gradient(ellipse 80% 60% at 50% 40%, rgba(245, 158, 11, 0.06) 0%, transparent 60%);
}

.product-hero-glow {
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.12;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.product-hero.cyan .product-hero-glow {
    background: var(--accent-cyan);
}

.product-hero.amber .product-hero-glow {
    background: var(--accent-amber);
}

.product-hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    margin: 0 auto;
}

.product-hero-icon {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 24px;
}

.product-hero.cyan .product-hero-icon {
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 212, 255, 0.25);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.15);
}

.product-hero.amber .product-hero-icon {
    background: var(--accent-amber-dim);
    color: var(--accent-amber);
    border: 1px solid rgba(245, 158, 11, 0.25);
    box-shadow: 0 0 30px rgba(245, 158, 11, 0.15);
}

.product-hero-name {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: 8px;
}

.product-hero.cyan .product-hero-name {
    color: var(--accent-cyan);
    text-shadow: 0 0 30px var(--accent-cyan-glow);
}

.product-hero.amber .product-hero-name {
    color: var(--accent-amber);
    text-shadow: 0 0 30px var(--accent-amber-glow);
}

.product-hero-version {
    display: inline-flex;
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.product-hero.cyan .product-hero-version {
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.product-hero.amber .product-hero-version {
    background: var(--accent-amber-dim);
    color: var(--accent-amber);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.product-hero-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Video Section */
.video-section {
    max-width: 900px;
    margin: 0 auto 60px;
    padding: 0 24px;
}

/* Showcase Section */
.showcase-section {
    max-width: 900px;
    margin: 0 auto 60px;
    padding: 0 24px;
}

.showcase-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.showcase-title::before {
    content: '🖼️';
    font-size: 1rem;
}

.showcase-subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    max-width: 900px;
    margin: 0 auto;
}

.showcase-item {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    cursor: pointer;
}

.showcase-item:hover {
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.showcase-item img {
    width: 100%;
    display: block;
    height: auto;
}

.showcase-img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

@media (max-width: 640px) {
    .showcase-grid {
        grid-template-columns: 1fr;
    }
}

.video-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.video-title::before {
    content: '▶';
    color: var(--accent-cyan);
    font-size: 0.8rem;
}

.video-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.bilibili-player {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: var(--radius-lg);
}

.video-cover-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    cursor: pointer;
    z-index: 10;
    background: rgba(0, 0, 0, 0.25);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.video-cover-overlay:hover {
    background: rgba(0, 0, 0, 0.35);
}

.video-cover-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-lg);
    z-index: 1;
}

.video-play-btn {
    position: relative;
    z-index: 2;
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: rgba(0, 212, 255, 0.85);
    border: 2px solid rgba(255, 255, 255, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #fff;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.video-cover-overlay:hover .video-play-btn {
    transform: scale(1.08);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.4);
}

.video-play-btn svg {
    width: 28px;
    height: 28px;
    fill: #fff;
    margin-left: 4px;
}

.video-play-hint {
    position: relative;
    z-index: 2;
    font-size: 14px;
    color: #fff;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
    font-weight: 500;
}

/* 移动端视频全屏适配 */
@media (max-width: 768px) {
    .video-wrapper {
        padding-bottom: 56.25%; /* 保持16:9 */
        border-radius: var(--radius-md);
    }
    .bilibili-player {
        border-radius: var(--radius-md);
    }
}

.video-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    background: linear-gradient(135deg, #e8ecf1, #f0f2f5);
}

.video-play-btn {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: rgba(0, 212, 255, 0.15);
    border: 2px solid rgba(0, 212, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    cursor: pointer;
}

.video-play-btn:hover {
    background: rgba(0, 212, 255, 0.25);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
    transform: scale(1.05);
}

.video-play-btn svg {
    width: 28px;
    height: 28px;
    fill: var(--accent-cyan);
    margin-left: 4px;
}

.video-placeholder-text {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Features List */
.features-list {
    max-width: 800px;
    margin: 0 auto 60px;
    padding: 0 24px;
}

.features-list-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 18px 0;
    border-bottom: 1px solid var(--border-color);
}

.feature-item:last-child {
    border-bottom: none;
}

.feature-item-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.cyan .feature-item-icon {
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
}

.amber .feature-item-icon {
    background: var(--accent-amber-dim);
    color: var(--accent-amber);
}

.feature-item-text h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.feature-item-text p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Pricing Section */
.pricing-section {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px 80px;
}

.pricing-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 24px;
    text-align: center;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.pricing-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px 16px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.pricing-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
}

.pricing-card.selected.cyan {
    border-color: var(--accent-cyan);
    background: var(--accent-cyan-dim);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.1);
}

.pricing-card.selected.amber {
    border-color: var(--accent-amber);
    background: var(--accent-amber-dim);
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.1);
}

.pricing-duration {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.pricing-card.selected .pricing-duration {
    color: var(--text-primary);
}

.pricing-price {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.pricing-card.selected.cyan .pricing-price {
    color: var(--accent-cyan);
}

.pricing-card.selected.amber .pricing-price {
    color: var(--accent-amber);
}

.pricing-unit {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.pricing-buy-btn {
    display: block;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

/* ============================================
   Purchase Page
   ============================================ */
.purchase-page {
    padding-top: calc(var(--nav-height) + 16px);
    min-height: 100vh;
    max-width: 720px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
    padding-bottom: 80px;
}

.purchase-hero {
    text-align: center;
    margin-bottom: 20px;
}

.purchase-subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-top: 8px;
}

/* 购买页服务承诺横幅 */
.purchase-benefit-banner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: var(--bg-card);
    border: 1px solid var(--accent-cyan);
    border-radius: var(--radius-lg);
    padding: 14px 20px;
    margin-bottom: 20px;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
}

.purchase-benefit-banner .benefit-text {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'SimHei', 'Microsoft YaHei', 'Heiti SC', sans-serif;
    color: #000;
}

.purchase-benefit-banner .benefit-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

.purchase-benefit-banner .benefit-text strong {
    color: #003344;
    font-weight: 700;
    font-family: var(--font-heading);
}

.purchase-benefit-banner .benefit-text-secondary {
    font-size: 13px;
    color: #1a1a1a;
    opacity: 0.85;
    text-align: center;
    font-weight: 500;
}

.purchase-section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 20px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--gradient-cyan);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 700;
    flex-shrink: 0;
}

.section-divider {
    height: 1px;
    background: var(--border-color);
    margin: 20px 0;
}

.purchase-form-container {
    margin-bottom: 8px !important;
}

.required-tag {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 500;
    padding: 2px 6px;
    margin-left: 6px;
    border-radius: 3px;
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
    vertical-align: middle;
    letter-spacing: 1px;
}

.form-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 8px;
}

/* 限购提示：橙色警示色 */
.buy-limit-hint {
    color: #d97706;
    font-weight: 500;
    margin-top: 4px;
    margin-bottom: 4px;
}

/* 限购时 + 按钮禁用样式 */
.qty-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.optional-tag {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 500;
    padding: 2px 6px;
    margin-left: 6px;
    border-radius: 3px;
    background: rgba(0, 152, 199, 0.12);
    color: var(--accent-cyan);
    vertical-align: middle;
    letter-spacing: 1px;
}

.coupon-input-row {
    display: flex;
    gap: 8px;
    align-items: center;
    flex: 1;
    min-width: 0;
    max-width: 260px;
}

.coupon-input {
    flex: 1;
    min-width: 0;
}

.btn-coupon-verify {
    flex-shrink: 0;
    padding: 6px 14px;
    font-size: 0.78rem;
    font-weight: 600;
    border: 1px solid var(--accent-cyan);
    background: transparent;
    color: var(--accent-cyan);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    height: 36px;
}

.btn-coupon-verify:hover {
    background: var(--accent-cyan);
    color: #fff;
}

.btn-coupon-verify:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.coupon-hint {
    min-height: 1em;
}

/* 优惠码行允许换行，让 hint 提示移到输入框下方，避免挤压 input */
#couponSection.form-row {
    flex-wrap: wrap;
}

.form-group.form-row .coupon-hint {
    flex-basis: 100%;
    width: 100%;
    margin-top: 4px;
    margin-bottom: 0;
}

.coupon-valid {
    color: #16a34a;
}

.coupon-invalid {
    color: #ef4444;
}

.order-summary-section .section-title {
    margin-bottom: 8px;
}

.order-summary-section {
    border-color: rgba(0, 152, 199, 0.25);
    background: linear-gradient(135deg, rgba(0,152,199,0.03), rgba(0,152,199,0.06));
    margin-top: 8px;
}

.order-summary {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.order-divider {
    height: 1px;
    background: var(--border-color);
    margin: 8px 0;
}

.order-divider.final-divider {
    height: 2px;
    background: linear-gradient(90deg, var(--accent-cyan), transparent);
    margin: 10px 0;
}

.discount-value {
    color: #16a34a !important;
    font-weight: 700 !important;
}

.purchase-pay-btn {
    width: 100%;
    margin-top: 20px;
    padding: 16px;
    font-size: 1.05rem;
    font-weight: 700;
    border-radius: var(--radius-md);
    transition: all 0.25s ease;
}

.purchase-pay-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ============================================
   Query Order Page (查询订单页)
   ============================================ */
.qo-page {
    padding-top: calc(var(--nav-height) + 24px);
    min-height: 100vh;
    max-width: 640px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
    padding-bottom: 48px;
}

.qo-header {
    text-align: center;
    margin-bottom: 28px;
}

.qo-title {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.qo-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    opacity: 0.8;
}

/* ---- Query Form ---- */
.qo-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.qo-field {
    margin-bottom: 18px;
}

.qo-field:last-of-type {
    margin-bottom: 22px;
}

.qo-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.qo-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.qo-input-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    padding: 7px;
    box-sizing: border-box;
    color: var(--text-muted);
    background: rgba(0, 0, 0, 0.04);
    border-radius: 8px;
    pointer-events: none;
    transition: color 0.2s ease, background 0.2s ease;
}

.qo-input {
    width: 100%;
    padding: 14px 16px 14px 52px;
    background: var(--bg-card);
    border: 1.5px solid #8a96a3;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.92rem;
    font-family: var(--font-body);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.qo-input::placeholder {
    color: var(--text-muted);
    opacity: 0.85;
}

.qo-input:hover {
    border-color: var(--accent-cyan);
}

.qo-input:focus {
    outline: none;
    border-color: var(--accent-cyan);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(0, 152, 199, 0.1);
}

.qo-input:focus ~ .qo-input-icon {
    color: #fff;
    background: var(--accent-cyan);
}

.qo-submit {
    display: block;
    width: 100%;
    padding: 14px;
    background: var(--accent-cyan);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font-body);
    cursor: pointer;
    transition: background 0.2s ease, transform 0.15s ease;
}

.qo-submit:hover {
    background: #007aab;
}

.qo-submit:active {
    transform: scale(0.99);
}

.qo-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ---- Result Area ---- */
.qo-result-area {
    margin-top: 24px;
}

/* Empty state */
.qo-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.qo-empty-icon {
    width: 40px;
    height: 40px;
    margin: 0 auto 12px;
    opacity: 0.4;
}

.qo-empty-text {
    font-size: 0.82rem;
    opacity: 0.7;
}

/* Skeleton loading */
.qo-skeleton {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 14px;
}

.qo-skel-line {
    height: 12px;
    background: linear-gradient(90deg, rgba(0,0,0,0.05) 25%, rgba(0,0,0,0.08) 50%, rgba(0,0,0,0.05) 75%);
    background-size: 200% 100%;
    border-radius: 4px;
    margin-bottom: 10px;
    animation: qoShimmer 1.4s ease-in-out infinite;
}

.qo-skel-line--w60 { width: 60%; }
.qo-skel-line--w40 { width: 40%; }
.qo-skel-line--w30 { width: 30%; }

@keyframes qoShimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ---- Order Card ---- */
.qo-order {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 14px;
    overflow: hidden;
}

.qo-order-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.qo-order-sn-wrap {
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 0;
    flex: 1;
}

.qo-order-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.02em;
}

.qo-order-sn {
    font-family: monospace;
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 600;
    word-break: break-all;
}

/* Status tags */
.qo-status {
    flex-shrink: 0;
    padding: 4px 10px;
    border-radius: 5px;
    font-size: 0.72rem;
    font-weight: 600;
    line-height: 1.4;
}

.qo-status--done {
    color: #047857;
    background: rgba(16, 185, 129, 0.1);
}

.qo-status--pending {
    color: #b45309;
    background: rgba(245, 158, 11, 0.1);
}

.qo-status--cancelled {
    color: #4b5563;
    background: rgba(107, 114, 128, 0.1);
}

.qo-status--failed {
    color: #b91c1c;
    background: rgba(239, 68, 68, 0.1);
}

.qo-status--default {
    color: #4b5563;
    background: rgba(107, 114, 128, 0.1);
}

/* Order body */
.qo-order-body {
    padding: 18px 20px;
}

.qo-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin: 0;
}

.qo-meta-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.qo-meta-item dt {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 500;
}

.qo-meta-item dd {
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 600;
    margin: 0;
    word-break: break-word;
}

.qo-meta-price {
    color: #047857;
    font-size: 0.95rem;
    font-weight: 700;
}

/* Card key section */
.qo-key {
    margin-top: 16px;
    padding: 14px 16px;
    background: rgba(0, 152, 199, 0.04);
    border: 1px solid rgba(0, 152, 199, 0.15);
    border-radius: var(--radius-sm);
}

.qo-key-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.qo-key-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.qo-key-copy {
    padding: 4px 12px;
    background: var(--accent-cyan);
    color: #fff;
    border: none;
    border-radius: 5px;
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease;
}

.qo-key-copy:hover {
    background: #007aab;
}

.qo-key-value {
    font-family: monospace;
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 700;
    word-break: break-all;
    line-height: 1.5;
    white-space: pre-wrap;
}

/* Delivery section */
.qo-delivery {
    margin-top: 12px;
    padding: 12px 16px;
    background: var(--bg-card-hover);
    border-radius: var(--radius-sm);
}

.qo-delivery-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 6px;
    font-weight: 600;
}

.qo-delivery-content {
    font-size: 0.8rem;
    line-height: 1.6;
    color: var(--text-primary);
}

.qo-delivery-content a {
    color: var(--accent-cyan);
    word-break: break-all;
}

/* Help block */
.qo-help-block {
    text-align: center;
    margin-top: 32px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.qo-help-text {
    font-size: 0.78rem;
    color: #000;
    margin: 0 0 12px;
}

.qo-qq-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    background: linear-gradient(135deg, #0098c7, #007aab);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    font-family: var(--font-body);
    text-decoration: none;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 152, 199, 0.25);
    transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.qo-qq-btn:hover {
    background: linear-gradient(135deg, #007aab, #005f80);
    box-shadow: 0 6px 18px rgba(0, 152, 199, 0.4);
    transform: translateY(-1px);
    text-decoration: none;
}

.qo-qq-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(0, 152, 199, 0.3);
}

.qo-qq-btn svg {
    flex-shrink: 0;
}

/* Result count badge */
.qo-count {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    padding: 3px 10px;
    background: var(--bg-card-hover);
    border-radius: 4px;
}

/* Responsive */
@media (max-width: 640px) {
    .qo-page {
        padding-left: 16px;
        padding-right: 16px;
    }
    .qo-form {
        padding: 18px;
    }
    .qo-meta {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    .qo-order-head {
        padding: 14px 16px;
    }
    .qo-order-body {
        padding: 14px 16px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .qo-skel-line {
        animation: none;
    }
    .qo-input,
    .qo-submit,
    .qo-key-copy,
    .qo-input-icon {
        transition: none;
    }
}

.order-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2px 0;
}

.order-row.total {
    padding-top: 2px;
}

.order-label {
    color: var(--text-secondary);
    font-size: 0.88rem;
}

.order-value {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.92rem;
}

.order-row.total .order-label {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.order-row.total .order-value {
    color: var(--accent-cyan);
    font-size: 1.4rem;
    font-weight: 800;
    font-family: var(--font-heading);
}

@media (max-width: 768px) {
    .duration-select-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .product-select-card {
        padding: 14px 16px;
    }
    .product-card-icon {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .duration-select-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .purchase-hero h1 {
        font-size: 1.5rem;
    }
    .purchase-section {
        padding: 18px 16px;
    }
}

/* ============================================
   Steps Indicator
   ============================================ */
.steps-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 40px;
}

.step-dot {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-muted);
    transition: var(--transition);
    font-size: 0.9rem;
}

.step-dot.active {
    background: var(--accent-cyan-dim);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.step-dot.completed {
    background: rgba(16, 185, 129, 0.15);
    border-color: #10b981;
    color: #10b981;
}

.step-line {
    width: 60px;
    height: 2px;
    background: var(--border-color);
    transition: var(--transition);
}

.step-line.completed {
    background: #10b981;
}

/* ============================================
   Step Content
   ============================================ */
.step-content {
    display: none;
}

.step-content.active {
    display: block;
    animation: stepEnter 0.3s ease;
}

@keyframes stepEnter {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.step-title {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.step-nav {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 28px;
}

/* ============================================
   Form
   ============================================ */
.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: var(--font-body);
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-input.input-error {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
    animation: inputShake 0.4s ease;
}

.input-wrapper {
    position: relative;
}

.input-status {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
}

.status-ok {
    color: #16a34a;
    font-weight: 700;
}

.status-err {
    color: #ef4444;
    font-weight: 700;
}

.form-input.has-status {
    padding-right: 40px;
}

@keyframes inputShake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-6px); }
    40% { transform: translateX(6px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
}

/* ============================================
   Product Select
   ============================================ */
.product-select-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.product-select-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 20px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--card-shadow);
}

.product-select-card:hover {
    border-color: var(--border-glow-cyan);
    box-shadow: var(--shadow-cyan);
    transform: translateY(-1px);
}

.product-select-card.selected {
    border-color: var(--accent-cyan);
    background: var(--accent-cyan-dim);
    box-shadow: 0 0 0 1px var(--accent-cyan), var(--shadow-cyan);
}

.product-card-icon {
    font-size: 1.8rem;
    flex-shrink: 0;
}

.product-card-info {
    min-width: 0;
}

.product-select-card .name {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.product-select-card .sub {
    font-size: 0.78rem;
    color: var(--text-secondary);
}

/* ============================================
   Duration Select
   ============================================ */
.duration-select-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.dur-loading {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 24px 12px;
    color: var(--text-muted);
    font-size: 14px;
}

.dur-loading-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: dur-spin 0.6s linear infinite;
}

@keyframes dur-spin {
    to { transform: rotate(360deg); }
}

.duration-select-card {
    padding: 18px 12px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
    box-shadow: var(--card-shadow);
}

.duration-select-card:hover {
    border-color: var(--border-glow-cyan);
    box-shadow: var(--shadow-cyan);
    transform: translateY(-1px);
}

.duration-select-card.selected {
    border-color: var(--accent-cyan);
    background: var(--accent-cyan-dim);
    box-shadow: 0 0 0 1px var(--accent-cyan), var(--shadow-cyan);
}

.duration-select-card .dur-name {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.duration-select-card .dur-price {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-cyan);
}

.dur-stock {
    font-size: 0.7rem;
    font-weight: 500;
    margin-top: 4px;
    letter-spacing: 0.5px;
}

.dur-stock.stock-normal {
    color: #10b981;
}

.dur-stock.stock-low {
    color: #f59e0b;
}

.dur-stock.stock-empty {
    color: #ef4444;
}

/* ============================================
   Payment Methods
   ============================================ */
.payment-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.payment-card {
    padding: 20px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.payment-card:hover {
    border-color: var(--border-glow-cyan);
    box-shadow: var(--shadow-cyan);
    transform: translateY(-1px);
}

.payment-card.selected {
    border-color: var(--accent-cyan);
    background: var(--accent-cyan-dim);
}

.payment-icon {
    font-size: 2rem;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 40px;
}

.payment-icon svg {
    display: block;
}

.wechat-icon {
    color: #07c160;
}

.alipay-icon {
    color: #1677ff;
}

.payment-name {
    font-weight: 600;
    font-size: 0.95rem;
}

/* ============================================
   Payment Pending
   ============================================ */
.payment-pending {
    text-align: center;
    padding: 60px 24px;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-cyan);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 24px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.payment-pending h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.payment-pending p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.purchase-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0;
    text-align: center;
}

/* Steps Indicator */
.steps-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-bottom: 48px;
}

.step-dot {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    color: var(--text-muted);
    transition: var(--transition);
    flex-shrink: 0;
}

.step-dot.active {
    border-color: var(--accent-cyan);
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
}

.step-dot.completed {
    border-color: var(--accent-cyan);
    background: var(--accent-cyan);
    color: #000;
}

.step-line {
    width: 60px;
    height: 2px;
    background: var(--border-color);
    transition: var(--transition);
}

.step-line.completed {
    background: var(--accent-cyan);
}

/* Step Content */
.step-content {
    display: none;
    animation: fadeIn 0.4s ease;
}

.step-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.step-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 24px;
}

/* Form Elements */
.form-group {
    margin-bottom: 12px;
}

.form-group.form-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.form-group.form-row .form-label {
    flex-shrink: 0;
    width: 72px;
    margin-bottom: 0;
    text-align: left;
}

.form-group.form-row .form-input,
.form-group.form-row .input-wrapper {
    flex: 1;
    min-width: 0;
    max-width: 260px;
}

.form-group.form-row .quantity-control {
    flex: none;
    min-width: 0;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.88rem;
    font-family: var(--font-body);
    transition: var(--transition);
    height: 36px;
    box-sizing: border-box;
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-input::placeholder {
    color: var(--text-muted);
}

/* Product Select */
.product-select-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.product-select-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 20px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--card-shadow);
}

.product-select-card:hover {
    border-color: var(--border-glow-cyan);
    box-shadow: var(--shadow-cyan);
    transform: translateY(-1px);
}

.product-select-card.selected {
    border-color: var(--accent-cyan);
    background: var(--accent-cyan-dim);
    box-shadow: 0 0 0 1px var(--accent-cyan), var(--shadow-cyan);
}

.product-select-card .name {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.product-select-card .sub {
    font-size: 0.78rem;
    color: var(--text-secondary);
}

/* Duration Select */
.duration-select-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.duration-select-card {
    padding: 18px 12px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
    box-shadow: var(--card-shadow);
}

.duration-select-card:hover {
    border-color: var(--border-glow-cyan);
    box-shadow: var(--shadow-cyan);
    transform: translateY(-1px);
}

.duration-select-card.selected {
    border-color: var(--accent-cyan);
    background: var(--accent-cyan-dim);
    box-shadow: 0 0 0 1px var(--accent-cyan), var(--shadow-cyan);
}

.duration-select-card .dur-name {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.duration-select-card .dur-price {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-cyan);
}

/* Payment Methods */
.payment-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.payment-card {
    padding: 20px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    box-shadow: var(--card-shadow);
}

.payment-card:hover {
    border-color: var(--border-glow-cyan);
    box-shadow: var(--shadow-cyan);
    transform: translateY(-1px);
}

.payment-card.selected {
    border-color: var(--accent-cyan);
    background: var(--accent-cyan-dim);
    box-shadow: 0 0 0 1px var(--accent-cyan), var(--shadow-cyan);
}

.payment-icon {
    font-size: 2rem;
}

.payment-name {
    font-size: 0.9rem;
    font-weight: 600;
}

/* Order Summary */
.order-summary {
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 16px;
}

.order-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 0;
}

.order-row.total .order-label,
.order-row.total .order-value {
    font-weight: 700;
    font-size: 1rem;
}

.order-row.total .order-value {
    color: var(--accent-cyan);
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 800;
}

.order-label {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.order-value {
    font-size: 0.92rem;
    font-weight: 600;
}

/* Step Navigation */
.step-nav {
    display: flex;
    gap: 12px;
    margin-top: 32px;
}

.step-nav .btn {
    flex: 1;
}

/* Payment Pending */
.payment-pending {
    text-align: center;
    padding: 60px 24px;
}

.payment-pending .spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-cyan);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 24px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.payment-pending h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.payment-pending p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Card Key Display */
.card-key-display {
    text-align: center;
    padding: 40px 24px;
}

.card-key-display .success-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(16, 185, 129, 0.15);
    border: 2px solid rgba(16, 185, 129, 0.3);
    color: #10b981;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin: 0 auto 24px;
}

.card-key-display h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    margin-bottom: 24px;
}

.card-key-box {
    background: var(--bg-card);
    border: 1px solid var(--accent-cyan);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.1);
}

.card-key-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.card-key-value {
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    word-break: break-all;
    user-select: all;
    white-space: pre-wrap;
}

.card-key-copy-btn {
    margin-top: 12px;
    padding: 8px 20px;
    background: var(--accent-cyan-dim);
    border: 1px solid rgba(0, 212, 255, 0.3);
    color: var(--accent-cyan);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.card-key-copy-btn:hover {
    background: rgba(0, 212, 255, 0.25);
}

.countdown-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 20px;
    padding: 16px 24px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-md);
}

.countdown-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.countdown-timer {
    font-family: 'Courier New', monospace;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--accent-cyan);
    letter-spacing: 4px;
    text-shadow: 0 0 12px rgba(0, 212, 255, 0.4);
    transition: color 0.3s, text-shadow 0.3s;
}

.countdown-timer.countdown-urgent {
    color: #ef4444;
    text-shadow: 0 0 12px rgba(239, 68, 68, 0.5);
    animation: countdown-pulse 1s ease-in-out infinite;
}

@keyframes countdown-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.expired-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(239, 68, 68, 0.15);
    border: 2px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin: 0 auto 24px;
}

.download-box {
    background: var(--bg-card);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-top: 20px;
    text-align: left;
}

.download-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.download-link-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.download-link-row .card-key-copy-btn {
    margin-top: 0;
    flex-shrink: 0;
}

.download-link {
    display: inline-block;
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: var(--accent-cyan);
    text-decoration: none;
    padding: 8px 12px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: var(--radius-sm);
    word-break: break-all;
    transition: var(--transition);
    flex: 1;
    min-width: 0;
}

.download-link:hover {
    background: rgba(0, 212, 255, 0.15);
    border-color: rgba(0, 212, 255, 0.3);
    text-shadow: 0 0 6px rgba(0, 212, 255, 0.3);
}

.download-pwd {
    margin-top: 12px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.pwd-value {
    font-family: 'Courier New', monospace;
    font-weight: 700;
    color: var(--accent-cyan);
    letter-spacing: 2px;
}

.qq-group-box {
    margin-top: 24px;
    text-align: center;
}

.btn-qq-group {
    display: inline-block;
    padding: 12px 32px;
    background: linear-gradient(135deg, #12b7f5, #0d9de6);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 2px 12px rgba(18, 183, 245, 0.3);
}

.btn-qq-group:hover {
    background: linear-gradient(135deg, #0d9de6, #0a87cc);
    box-shadow: 0 4px 20px rgba(18, 183, 245, 0.45);
    transform: translateY(-1px);
}

.qq-group-hint {
    margin-top: 10px;
    font-size: 0.95rem;
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    letter-spacing: 2px;
    font-weight: 600;
}

.qq-group-contact {
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.card-key-warning {
    margin-top: 20px;
    padding: 10px 16px;
    font-size: 0.85rem;
    color: #f59e0b;
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--radius-sm);
    text-align: center;
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    backdrop-filter: blur(4px);
}

.modal-box {
    background: var(--bg-card);
    border: 1px solid rgba(0, 212, 255, 0.25);
    border-radius: var(--radius-md);
    padding: 28px 32px;
    max-width: 400px;
    width: 90%;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.modal-msg {
    font-size: 0.95rem;
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: 4px;
}

.modal-msg-sub {
    font-size: 0.9rem;
    color: var(--accent-cyan);
    font-weight: 600;
    margin-bottom: 24px;
}

.modal-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.modal-actions .btn {
    min-width: 100px;
}

/* ============================================
   Tutorial Page
   ============================================ */
.tutorial-page {
    padding-top: calc(var(--nav-height) + 40px);
    min-height: 100vh;
    max-width: 1000px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
    padding-bottom: 80px;
}

.tutorial-header {
    text-align: center;
    margin-bottom: 40px;
}

.tutorial-header h1 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.tutorial-header p {
    color: var(--text-secondary);
}

.tutorial-recommend-tip {
    display: inline-block;
    margin-top: 16px;
    padding: 10px 24px;
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(8, 145, 178, 0.15));
    border: 1px solid rgba(6, 182, 212, 0.4);
    border-radius: 8px;
    color: #06b6d4;
    font-size: 1rem;
    font-weight: 600;
}

/* Tutorial Header Cards */
.tutorial-header .tutorial-warn-tip {
    margin-top: 16px;
    padding: 14px 20px;
    text-align: center;
    font-size: 16px;
    color: #000;
    font-weight: 600;
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.20) 0%, rgba(245, 158, 11, 0.14) 100%);
    border: 1px solid rgba(251, 191, 36, 0.45);
    border-radius: 10px;
}

.tutorial-header-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-top: 24px;
}

.tutorial-header-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 18px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    box-shadow: var(--card-shadow);
    transition: all 0.25s ease;
    text-decoration: none;
    color: inherit;
}

.tutorial-card-link {
    cursor: pointer;
}

.tutorial-card-link:hover {
    transform: translateY(-2px);
}

.tutorial-card-cyan:hover {
    border-color: rgba(0, 152, 199, 0.3);
    box-shadow: 0 8px 24px rgba(0, 152, 199, 0.1);
}

.tutorial-card-green:hover {
    border-color: rgba(16, 185, 129, 0.3);
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.1);
}

.tutorial-card-blue:hover {
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.1);
}

.tutorial-card-warn {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.18) 0%, rgba(245, 158, 11, 0.12) 100%);
    border-color: rgba(251, 191, 36, 0.35);
}

.tutorial-card-cyan {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.15) 0%, rgba(8, 145, 178, 0.10) 100%);
    border-color: rgba(6, 182, 212, 0.3);
}

.tutorial-card-green {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(5, 150, 105, 0.10) 100%);
    border-color: rgba(16, 185, 129, 0.3);
}

.tutorial-card-blue {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(37, 99, 235, 0.10) 100%);
    border-color: rgba(59, 130, 246, 0.3);
}

.tutorial-card-icon {
    font-size: 1.6rem;
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.6);
}

.tutorial-card-warn .tutorial-card-icon {
    background: rgba(251, 191, 36, 0.15);
}

.tutorial-card-cyan .tutorial-card-icon {
    background: rgba(6, 182, 212, 0.12);
}

.tutorial-card-green .tutorial-card-icon {
    background: rgba(16, 185, 129, 0.12);
}

.tutorial-card-blue .tutorial-card-icon {
    background: rgba(59, 130, 246, 0.12);
}

.tutorial-card-body {
    flex: 1;
    min-width: 0;
}

.tutorial-card-title {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
    line-height: 1.3;
}

.tutorial-card-desc {
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.tutorial-card-arrow {
    font-size: 1.4rem;
    color: var(--text-tertiary);
    font-weight: 300;
    flex-shrink: 0;
    transition: transform 0.25s ease;
}

.tutorial-card-link:hover .tutorial-card-arrow {
    transform: translateX(3px);
}

.tutorial-card-cyan:hover .tutorial-card-arrow {
    color: #06b6d4;
}

.tutorial-card-green:hover .tutorial-card-arrow {
    color: #10b981;
}

.tutorial-card-blue:hover .tutorial-card-arrow {
    color: #3b82f6;
}

@media (max-width: 768px) {
    .tutorial-header-cards {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    .tutorial-header-card {
        padding: 14px 16px;
    }
    .tutorial-card-icon {
        width: 40px;
        height: 40px;
        font-size: 1.4rem;
    }
}

.tutorial-note {
    background: var(--accent-cyan-dim);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 32px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.tutorial-video-section {
    margin-bottom: 28px;
}

.tutorial-video-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.tutorial-video-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.tutorial-video-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.tutorial-video-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    text-decoration: none;
    transition: all 0.2s ease;
}

.tutorial-video-card:hover {
    border-color: #0891b2;
    box-shadow: 0 2px 8px rgba(8, 145, 178, 0.15);
    transform: translateY(-1px);
}

.tutorial-video-card.amber:hover {
    border-color: #d97706;
    box-shadow: 0 2px 8px rgba(217, 119, 6, 0.15);
}

.tutorial-video-icon {
    font-size: 1.4rem;
    flex-shrink: 0;
}

.tutorial-video-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.tutorial-video-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.tutorial-video-res {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.tutorial-video-arrow {
    font-size: 1.1rem;
    color: var(--text-muted);
    flex-shrink: 0;
    transition: transform 0.2s;
}

.tutorial-video-card:hover .tutorial-video-arrow {
    transform: translateX(3px);
    color: #0891b2;
}

.tutorial-video-card.amber:hover .tutorial-video-arrow {
    color: #d97706;
}

@media (max-width: 480px) {
    .tutorial-video-grid {
        grid-template-columns: 1fr;
    }
}

.tutorial-download-box {
    background: rgba(0, 212, 255, 0.06);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    margin-bottom: 24px;
}

.tutorial-download-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.tutorial-download-row {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.tutorial-download-row:last-child {
    margin-bottom: 0;
}

.tutorial-download-label {
    color: var(--text-secondary);
    flex-shrink: 0;
    width: 80px;
}

.tutorial-download-link {
    color: var(--accent-cyan);
    text-decoration: none;
    word-break: break-all;
}

.tutorial-download-link:hover {
    text-decoration: underline;
}

.tutorial-download-password {
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    font-weight: 600;
    letter-spacing: 2px;
}

.tutorial-download-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-top: 16px;
    padding: 14px 24px;
    background: var(--gradient-cyan);
    color: #fff;
    border-radius: 12px;
    text-decoration: none;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1), 0 2px 6px rgba(0, 152, 199, 0.32);
    line-height: 1.2;
}

.tutorial-download-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.12), 0 4px 8px rgba(0, 152, 199, 0.42);
    text-decoration: none;
    color: #fff;
}

.tutorial-download-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.tutorial-download-main {
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.tutorial-download-pwd {
    font-size: 0.78rem;
    font-weight: 500;
    opacity: 0.92;
    letter-spacing: 0.3px;
}

.tutorial-download-pwd::before {
    content: '🔑 ';
    font-size: 0.85rem;
}

.tutorial-note.tutorial-warn {
    background: rgba(239, 68, 68, 0.3);
    border-color: rgba(239, 68, 68, 0.6);
    color: #dc2626;
    font-weight: 700;
}

/* 操作步骤条（教程页） */
.tutorial-steps {
    background: #fff;
    border: 1px solid rgba(0,0,0,0.08);
    border-radius: 12px;
    padding: 20px 24px;
    margin-bottom: 16px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.tutorial-steps-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 14px;
    letter-spacing: 0.5px;
}

.tutorial-steps-track {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.tutorial-step {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 0;
}

.tutorial-step-num {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--gradient-cyan);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 2px 6px rgba(0,152,199,0.3);
}

.tutorial-step-content {
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 0;
}

.tutorial-step-title {
    font-size: 14px;
    font-weight: 600;
    color: #000;
    line-height: 1.3;
    white-space: nowrap;
}

.tutorial-step-desc {
    font-size: 13px;
    color: #555;
    line-height: 1.5;
    letter-spacing: 0.2px;
    white-space: normal;
    word-break: break-word;
}

.tutorial-step-arrow {
    color: rgba(0,0,0,0.2);
    font-size: 16px;
    flex-shrink: 0;
    padding: 0 2px;
    line-height: 1;
}

/* 响应式：移动端步骤条纵向排列 */
@media (max-width: 768px) {
    .tutorial-steps {
        padding: 16px 18px;
    }
    .tutorial-steps-track {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    .tutorial-step {
        width: 100%;
    }
    .tutorial-step-arrow {
        transform: rotate(90deg);
        align-self: center;
        padding: 0;
    }
}

.tutorial-qq-section {
    text-align: center;
    margin-top: 40px;
    padding: 32px 24px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.06), rgba(0, 150, 255, 0.06));
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 12px;
}

.tutorial-screenshots {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 100%;
    margin: 0 auto;
}

.tutorial-screenshot-item {
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.tutorial-screenshot-item:hover {
    border-color: rgba(0, 212, 255, 0.4);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.tutorial-screenshot-img {
    width: 100%;
    height: auto;
    display: block;
}

.tutorial-screenshots .tutorial-screenshot-img {
    object-fit: contain;
}


@media (max-width: 640px) {
    .tutorial-screenshots {
        gap: 12px;
    }
}

.feishu-tutorial-btn {
    margin-top: 16px;
    display: inline-block;
    padding: 10px 24px;
    font-size: 14px;
}

.lanzou-download-btn {
    margin-left: 12px;
    background: linear-gradient(135deg, #10b981, #059669);
    box-shadow: 0 2px 16px rgba(16, 185, 129, 0.25);
}

.tutorial-video-jump-btn {
    margin-left: 12px;
    background: linear-gradient(135deg, #0891b2, #0e7490);
    box-shadow: 0 2px 16px rgba(8, 145, 178, 0.25);
}

@media (max-width: 480px) {
    .lanzou-download-btn,
    .tutorial-video-jump-btn {
        margin-left: 0;
        margin-top: 12px;
    }
}

/* 教程页演示视频跳转大按钮（软件下载下方） - 视频缩略图卡片 */
.tutorial-video-hero-btn {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 20px 0 24px;
    padding: 14px 18px;
    text-decoration: none;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.65);
    color: var(--text-primary);
    border: 1px solid var(--accent-cyan);
    box-shadow: 0 0 0 1px rgba(0, 152, 199, 0.05), 0 4px 14px rgba(0, 152, 199, 0.08);
    transition: box-shadow 0.25s ease, transform 0.25s ease, background 0.25s ease;
    cursor: pointer;
}

.tutorial-video-hero-btn:hover {
    background: rgba(255, 255, 255, 0.85);
    box-shadow: 0 0 0 1px rgba(0, 152, 199, 0.08), 0 8px 24px rgba(0, 152, 199, 0.15);
    transform: translateY(-1px);
}

.tutorial-video-hero-btn .tvhb-thumb {
    position: relative;
    width: 84px;
    height: 52px;
    flex-shrink: 0;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(0, 152, 199, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.tutorial-video-hero-btn .tvhb-thumb::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 152, 199, 0.1) 0%, rgba(6, 182, 212, 0.14) 100%);
}

.tutorial-video-hero-btn .tvhb-play {
    position: relative;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 9px 0 9px 14px;
    border-color: transparent transparent transparent var(--accent-cyan);
    filter: drop-shadow(0 1px 2px rgba(0, 152, 199, 0.25));
    transition: transform 0.2s ease;
}

.tutorial-video-hero-btn:hover .tvhb-play {
    transform: scale(1.1);
}

.tutorial-video-hero-btn .tvhb-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
    text-align: left;
    line-height: 1.4;
    flex: 1;
}

.tutorial-video-hero-btn .tvhb-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.tutorial-video-hero-btn .tvhb-sub {
    font-size: 12px;
    color: var(--text-tertiary);
    font-weight: 400;
}

@media (max-width: 480px) {
    .tutorial-video-hero-btn {
        padding: 12px 14px;
        gap: 12px;
    }
    .tutorial-video-hero-btn .tvhb-thumb {
        width: 72px;
        height: 46px;
    }
    .tutorial-video-hero-btn .tvhb-play {
        border-width: 7px 0 7px 11px;
    }
    .tutorial-video-hero-btn .tvhb-title { font-size: 14px; }
    .tutorial-video-hero-btn .tvhb-sub { font-size: 11px; }
}

.feishu-back-btn {
    margin-bottom: 16px;
    display: inline-block;
    padding: 12px 28px;
    font-size: 1rem;
    font-weight: 600;
    box-shadow: 0 2px 16px rgba(0, 212, 255, 0.25);
}

.feishu-content {
    max-width: 900px;
    margin: 0 auto;
}

.faq-content {
    max-width: 900px;
    margin: 0 auto;
}

.faq-back-float {
    position: fixed;
    top: calc(var(--nav-height) + 12px);
    left: 16px;
    z-index: 100;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #06b6d4, #0891b2);
    color: #fff;
    font-size: 1.3rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(6, 182, 212, 0.4);
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s;
    line-height: 1;
}
.faq-back-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.5);
}

.faq-placeholder {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    font-size: 1rem;
    opacity: 0.7;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px 24px;
    margin-bottom: 16px;
    box-shadow: var(--card-shadow);
}

.faq-item-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: #000;
    margin-bottom: 8px;
}

.faq-item-hint {
    font-size: 0.9rem;
    color: #d97706;
    font-weight: 600;
    margin-bottom: 12px;
}

.faq-item-steps {
    margin: 0;
    padding-left: 20px;
    color: #1a1a1a;
    font-size: 0.95rem;
    line-height: 1.8;
}

.faq-item-steps li {
    margin-bottom: 6px;
}

.feishu-content .tutorial-screenshot-item {
    max-width: 550px;
    margin: 0 auto 16px auto;
}

.feishu-dual-images {
    display: flex;
    gap: 16px;
    max-width: 700px;
    margin: 0 auto 16px auto;
}

.feishu-dual-images .tutorial-screenshot-item {
    flex: 1;
    margin: 0;
}

.feishu-dual-images .tutorial-screenshot-item.feishu-preview-item {
    max-width: none;
}

.feishu-content .tutorial-screenshot-item:has(.feishu-wide-img) {
    max-width: 900px;
}

.feishu-content .tutorial-screenshot-item.feishu-preview-item {
    max-width: 400px;
}

.feishu-content .tutorial-screenshot-img {
    width: 100%;
    height: auto;
    display: block;
    background: #f3f4f6;
    min-height: 60px;
}

.feishu-preview-item {
    position: relative;
}

.feishu-preview-img {
    height: auto;
    width: 100%;
    max-width: 100%;
    object-fit: contain;
    display: block;
    margin: 0 auto;
}

.feishu-wide-img {
    max-width: 100%;
    height: auto;
    object-fit: contain;
    display: block;
    margin: 40px auto 40px auto;
}

.feishu-preview-label {
    position: absolute;
    top: 12px;
    left: 12px;
    background: linear-gradient(135deg, #00d4ff, #0099cc);
    color: #fff;
    padding: 4px 14px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    z-index: 2;
}

.feishu-part-title {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--accent-cyan);
    margin-top: 28px;
    margin-bottom: 8px;
    padding-left: 4px;
}

.feishu-step-text {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    padding-left: 8px;
    line-height: 1.6;
}

.feishu-link {
    color: var(--accent-cyan);
    text-decoration: underline;
    word-break: break-all;
}

.feishu-link:hover {
    color: #fff;
}

.tutorial-qq-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.tutorial-qq-desc {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.tutorial-qq-btn {
    min-width: 240px;
}

.tutorial-section-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 16px;
    margin-top: 8px;
}

.tutorial-subsection-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 24px 0 12px;
    padding-left: 12px;
    border-left: 3px solid var(--accent-cyan, #06b6d4);
}

.tutorial-subsection-title .subsection-icon {
    font-size: 1.1rem;
}

.section-num {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--gradient-cyan);
    color: #000;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    flex-shrink: 0;
}

.tutorial-system-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 8px 0;
    margin-bottom: 32px;
    transition: var(--transition);
}

.tutorial-system-card:hover {
    border-color: rgba(0, 212, 255, 0.2);
}

.tutorial-columns {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.tutorial-col {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.tutorial-col:hover {
    border-color: rgba(0, 212, 255, 0.2);
}

.tutorial-col-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    background: rgba(0, 212, 255, 0.03);
}

.col-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 12px;
    background: var(--gradient-cyan);
    color: #000;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 4px;
    letter-spacing: 1px;
}

.col-title {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.tutorial-settings-card {
    padding: 8px 0;
}

.setting-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    transition: background 0.2s ease;
}

.setting-row:last-child {
    border-bottom: none;
}

.setting-row:hover {
    background: rgba(255, 255, 255, 0.02);
}

.setting-name {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.setting-value {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-primary);
    font-family: var(--font-heading);
}

.setting-row.setting-diff {
    background: rgba(245, 158, 11, 0.06);
}

.setting-row.setting-diff .setting-name {
    color: var(--accent-amber);
}

.setting-row.setting-diff .setting-value {
    color: var(--accent-amber);
}

.setting-row.setting-highlight {
}

.setting-row.setting-highlight .setting-name {
}

.setting-row.setting-highlight .setting-value {
    font-weight: 700;
    color: #dc2626;
}

.setting-tip {
    display: block;
    font-size: 0.75rem;
    color: #f59e0b;
    font-weight: 400;
    margin-top: 2px;
}

@media (max-width: 768px) {
    .tutorial-columns {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Loyalty Roll Modal & Section
   ============================================ */
.loyalty-section {
    background: linear-gradient(135deg, rgba(0,152,199,0.06), rgba(245,158,11,0.08));
    border: 1px solid rgba(0,152,199,0.2);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-top: 4px;
}
.loyalty-section-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}
.loyalty-section-icon {
    font-size: 1.3rem;
}
.loyalty-section-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--accent-cyan);
}
.loyalty-section-desc {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}
.loyalty-roll-btn {
    width: 100%;
    padding: 12px 20px;
    background: linear-gradient(135deg, #0098c7, #007aab);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.25s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 48px;
}
.loyalty-roll-btn:hover {
    background: linear-gradient(135deg, #007aab, #006690);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(0,152,199,0.3);
}
.loyalty-roll-btn:active { transform: scale(0.97); }
.loyalty-roll-btn:disabled {
    background: #d1d5db;
    color: #9ca3af;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}
.loyalty-roll-btn:disabled:hover {
    background: #d1d5db;
    transform: none;
    box-shadow: none;
}
.loyalty-section-hint {
    color: #9ca3af;
    font-size: 0.85rem;
    margin: 4px 0 8px;
    text-align: center;
}
.loyalty-roll-btn .roll-btn-icon {
    display: inline-block;
    animation: btnShake 0.6s ease infinite alternate;
}
@keyframes btnShake {
    from { transform: rotate(-8deg); }
    to { transform: rotate(8deg); }
}
.loyalty-roll-btn:disabled .roll-btn-icon { animation: none; }

.loyalty-discount-display {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: rgba(22,163,74,0.08);
    border: 1px solid rgba(22,163,74,0.25);
    border-radius: var(--radius-sm);
    margin-top: 10px;
}
.loyalty-discount-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.loyalty-discount-amount {
    font-size: 1.15rem;
    font-weight: 800;
    color: #16a34a;
    font-family: 'SF Mono', 'Consolas', monospace;
}

.loyalty-new-user-hint {
    text-align: center;
    padding: 12px;
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* Roll Modal */
.loyalty-roll-modal {
    max-width: 380px;
    text-align: center;
    padding: 32px 28px !important;
    position: relative;
}
.roll-close-top-btn {
    position: absolute;
    top: 10px;
    right: 12px;
    width: 32px; height: 32px;
    border: none;
    background: rgba(0,0,0,0.06);
    color: var(--text-muted);
    font-size: 1.2rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    z-index: 5;
}
.roll-close-top-btn:hover {
    background: rgba(0,0,0,0.12);
    color: var(--text-primary);
}
.roll-remaining-info {
    margin-top: 8px;
    font-size: 0.78rem;
    color: #f59e0b;
    background: rgba(245,158,11,0.08);
    padding: 4px 14px;
    border-radius: 20px;
    display: inline-block;
}
.roll-remaining-info strong {
    color: #d97706;
    font-weight: 800;
}
.roll-header {
    margin-bottom: 24px;
}
.roll-icon {
    font-size: 2.5rem;
    margin-bottom: 10px;
    animation: giftBounce 1s ease infinite alternate;
}
@keyframes giftBounce {
    from { transform: scale(1) rotate(-5deg); }
    to { transform: scale(1.1) rotate(5deg); }
}
.roll-title {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 6px;
}
.roll-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
}
.roll-display {
    margin-bottom: 20px;
}
.roll-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 10px;
    letter-spacing: 1px;
    text-transform: uppercase;
}
.roll-slot-machine {
    background: linear-gradient(180deg, #1a1d28 0%, #0f1117 100%);
    border: 2px solid rgba(0,212,255,0.3);
    border-radius: 16px;
    padding: 20px 28px;
    display: inline-flex;
    align-items: baseline;
    gap: 4px;
    box-shadow: inset 0 2px 12px rgba(0,0,0,0.5), 0 0 30px rgba(0,212,255,0.15);
}
.roll-currency {
    font-size: 1.8rem;
    font-weight: 800;
    color: #00d4ff;
    font-family: 'SF Mono', 'Consolas', monospace;
}
.roll-digits {
    display: flex;
    align-items: baseline;
    gap: 2px;
}
.roll-digit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 52px;
    font-size: 2.4rem;
    font-weight: 900;
    font-family: 'SF Mono', 'Consolas', monospace;
    color: #00d4ff;
    background: rgba(0,212,255,0.08);
    border-radius: 8px;
    margin: 0 2px;
    transition: color 0.1s, text-shadow 0.1s;
}
.roll-digit.rolling {
    animation: digitRoll 0.08s steps(1) infinite;
    color: #fff;
    text-shadow: 0 0 12px #00d4ff, 0 0 24px #00d4ff;
}
@keyframes digitRoll {
    0% { opacity: 1; }
    50% { opacity: 0.6; }
    100% { opacity: 1; }
}
.roll-dot {
    font-size: 2rem;
    font-weight: 900;
    color: #00d4ff;
    font-family: 'SF Mono', 'Consolas', monospace;
}
.roll-result {
    animation: resultFadeIn 0.5s ease forwards;
}
@keyframes resultFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
.result-amount {
    font-size: 2.2rem;
    font-weight: 900;
    color: #16a34a;
    font-family: 'SF Mono', 'Consolas', monospace;
    margin-bottom: 8px;
    text-shadow: 0 0 20px rgba(22,163,74,0.3);
}
.result-hint {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}
.roll-actions {
    display: flex;
    gap: 10px;
    margin-top: 16px;
    animation: confirmBtnPop 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}
.roll-confirm-btn {
    flex: 1;
    padding: 12px 20px;
    background: linear-gradient(135deg, #16a34a, #15803d);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.25s ease;
    min-height: 48px;
}
.roll-confirm-btn:hover { background: linear-gradient(135deg, #15803d, #166534); transform: translateY(-1px); }
.roll-retry-btn {
    flex: 1;
    padding: 12px 20px;
    background: linear-gradient(135deg, #0098c7, #007aab);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.25s ease;
    min-height: 48px;
}
.roll-retry-btn:hover { background: linear-gradient(135deg, #007aab, #006690); transform: translateY(-1px); }
.roll-close-btn {
    width: 100%;
    margin-top: 10px;
    padding: 10px;
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    cursor: pointer;
    transition: all 0.2s;
}
.roll-close-btn:hover { background: var(--bg-secondary); color: var(--text-secondary); }
@keyframes confirmBtnPop {
    from { opacity: 0; transform: scale(0.85); }
    to { opacity: 1; transform: scale(1); }
}

/* Order Summary - Loyalty Discount Row */
.order-row.loyalty-row {
    color: #16a34a;
}
.order-row.loyalty-row .order-value {
    color: #16a34a;
    font-weight: 700;
}
.order-divider {
    height: 1px;
    background: var(--border-color);
    margin: 6px 0;
}

@media (max-width: 768px) {
    .loyalty-roll-modal { padding: 24px 20px !important; max-width: 320px; }
    .roll-digit { min-width: 28px; height: 44px; font-size: 1.9rem; }
    .result-amount { font-size: 1.8rem; }
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 40px 24px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: 12px;
}

.footer-copy {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ============================================
   Toast
   ============================================ */
.toast-container {
    position: fixed;
    top: 90px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    padding: 14px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
    max-width: 360px;
    backdrop-filter: blur(10px);
}

.toast.error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

.toast.success {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #10b981;
}

.toast.info {
    background: rgba(0, 212, 255, 0.15);
    border: 1px solid rgba(0, 212, 255, 0.3);
    color: var(--accent-cyan);
}

@keyframes toastIn {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
    from { opacity: 1; transform: translateX(0); }
    to { opacity: 0; transform: translateX(40px); }
}

/* ============================================
   Page Transitions
   ============================================ */
.page-enter {
    animation: pageEnter 0.5s ease forwards;
}

@keyframes pageEnter {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Loading
   ============================================ */
.loading-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-cyan);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    /* 移动端导航：横向滑动条，替代汉堡菜单 */
    .nav-mobile-toggle,
    .mobile-menu,
    .nav-cta {
        display: none !important;
    }

    .nav-container {
        justify-content: space-between;
        padding: 0 14px;
        gap: 8px;
    }

    .nav-logo {
        font-size: 0.95rem;
        flex-shrink: 0;
    }

    .logo-icon {
        font-size: 1.1rem;
    }

    /* nav-links 改为横向可滑动条 */
    .nav-links {
        display: flex !important;
        flex: 1;
        min-width: 0;
        justify-content: flex-start !important;
        gap: 4px;
        margin-left: 4px;
        overflow-x: auto;
        flex-wrap: nowrap;
        white-space: nowrap;
        scrollbar-width: none;
        -ms-overflow-style: none;
        -webkit-overflow-scrolling: touch;
        -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 16px, #000 calc(100% - 16px), transparent 100%);
                mask-image: linear-gradient(90deg, transparent 0, #000 16px, #000 calc(100% - 16px), transparent 100%);
    }

    .nav-links::-webkit-scrollbar {
        display: none;
    }

    .nav-pill {
        display: flex;
        align-items: center;
        gap: 0;
        padding: 4px;
        background: rgba(0, 0, 0, 0.3);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 999px;
        flex-shrink: 0;
        box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.3);
    }

    .nav-pill-indicator {
        top: 0;
        height: 100%;
    }

    .nav-link {
        font-size: 0.8rem;
        padding: 6px 14px;
        flex-shrink: 0;
        border-radius: 999px;
        color: rgba(255, 255, 255, 0.6);
        -webkit-tap-highlight-color: transparent;
        -webkit-touch-callout: none;
    }

    .nav-link.active {
        color: #fff;
        font-weight: 600;
    }

    .products-showcase {
        gap: 24px;
    }

    .product-row {
        grid-template-columns: 1fr;
        padding: 28px 20px;
        gap: 24px;
    }

    .product-row-visual {
        order: -1;
    }

    .product-row-price {
        font-size: 2.2rem;
    }

    .product-row-actions {
        flex-direction: column;
    }

    .product-row-actions .btn {
        width: 100%;
        text-align: center;
    }

    .carousel-arrow {
        width: 32px;
        height: 32px;
        font-size: 18px;
        opacity: 0.7;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .product-select-grid {
        grid-template-columns: 1fr;
    }

    .duration-select-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .payment-grid {
        grid-template-columns: 1fr;
    }

    .tutorial-step {
        flex-direction: column;
        align-items: flex-start;
    }

    .steps-indicator {
        gap: 0;
    }

    .step-line {
        width: 30px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
}

@media (max-width: 480px) {
    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .duration-select-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .section {
        padding: 60px 16px;
    }

    /* 超小屏：隐藏 logo 文字，给滑动条更多空间 */
    .logo-text {
        display: none;
    }

    .nav-logo {
        gap: 0;
    }
}

/* ===== Trial Modal ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    padding: 20px;
    overflow-y: auto;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    max-width: 420px;
    width: 100%;
    text-align: center;
    position: relative;
    transform: scale(0.9);
    transition: transform 0.3s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    margin: auto;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 52px;
    height: 52px;
    border: none;
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-size: 34px;
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    z-index: 10;
}

.modal-close:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

/* 更新日志弹窗 */
.changelog-modal-content {
    max-width: 560px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
}

.changelog-list {
    overflow-y: auto;
    flex: 1;
    padding: 4px 4px 8px 0;
    margin-top: 8px;
}

.changelog-list::-webkit-scrollbar {
    width: 5px;
}

.changelog-list::-webkit-scrollbar-thumb {
    background: #d1d5db;
    border-radius: 3px;
}

.changelog-item {
    padding: 0;
    margin-bottom: 16px;
    background: #fff;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    overflow: hidden;
}

.changelog-item:last-child {
    margin-bottom: 0;
}

.changelog-item-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: linear-gradient(135deg, #f0f7ff 0%, #eef2ff 100%);
    border-bottom: 1px solid #e5e7eb;
}

.changelog-version {
    font-size: 0.9rem;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, #3b82f6 0%, #6366f1 100%);
    padding: 3px 12px;
    border-radius: 20px;
    letter-spacing: 0.5px;
}

.changelog-date {
    font-size: 0.78rem;
    color: #6b7280;
}

.changelog-section {
    padding: 12px 16px;
    border-bottom: 1px solid #f3f4f6;
}

.changelog-section:last-child {
    border-bottom: none;
}

.changelog-section-title {
    font-size: 0.8rem;
    font-weight: 700;
    color: #374151;
    margin-bottom: 8px;
    padding-left: 2px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.changelog-section-title::before {
    content: '';
    width: 3px;
    height: 14px;
    background: #3b82f6;
    border-radius: 2px;
}

.changelog-items {
    list-style: none;
    padding: 0;
    margin: 0;
}

.changelog-entry {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 5px 0;
    line-height: 1.6;
    text-align: left;
}

.changelog-entry-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: #3b82f6;
    flex-shrink: 0;
    margin-top: 8px;
}

.changelog-entry-text {
    font-size: 0.84rem;
    color: #374151;
    flex: 1;
    min-width: 0;
    text-align: left;
}

.changelog-loading,
.changelog-empty {
    text-align: center;
    padding: 32px 16px;
    color: #9ca3af;
    font-size: 0.85rem;
}

.modal-icon {
    font-size: 64px;
    margin-bottom: 20px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.modal-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.modal-desc {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.modal-qq-group {
    background: var(--bg-primary);
    border: 2px solid var(--accent-cyan);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 24px;
}

.qq-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.qq-number {
    font-size: 32px;
    font-weight: 800;
    color: var(--accent-cyan);
    font-family: 'Orbitron', monospace;
}

.modal-btn {
    width: 100%;
    margin-bottom: 16px;
}

.modal-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-top: 12px;
}

.modal-actions .btn {
    min-width: 128px;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 12px;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.modal-actions .btn-primary {
    background: var(--gradient-cyan);
    color: #fff;
    border: none;
    transition: box-shadow 0.2s ease, transform 0.15s ease;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1), 0 2px 6px rgba(0, 152, 199, 0.32);
}

.modal-actions .btn-primary:hover {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.12), 0 4px 8px rgba(0, 152, 199, 0.42);
    transform: translateY(-1px);
}

.modal-actions .btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.modal-actions .btn-primary:focus-visible {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 2px;
}

.modal-note {
    font-size: 14px;
    color: var(--text-secondary);
    opacity: 0.7;
}

/* === Download Modal (redesigned) === */
.modal-content--download {
    max-width: 440px;
    padding: 36px 36px 32px;
    text-align: left;
    transform: translateY(0) scale(1);
    background: #ffffff;
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow:
        0 1px 2px rgba(0, 0, 0, 0.04),
        0 8px 24px rgba(0, 0, 0, 0.08),
        0 24px 48px -12px rgba(0, 152, 199, 0.12);
}

.modal-content--download .modal-close {
    background: transparent;
    color: var(--text-muted);
    font-weight: 300;
}

.modal-content--download .modal-close:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.modal-content--download .dl-header {
    margin-bottom: 20px;
}

.dl-eyebrow {
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-cyan);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 6px;
}

.dl-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    margin: 0;
    letter-spacing: -0.01em;
}

.dl-password {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border: 1px solid rgba(0, 152, 199, 0.18);
    border-radius: 14px;
    padding: 20px 24px;
    margin-bottom: 14px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.dl-password::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 152, 199, 0.3), transparent);
}

.dl-password-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.dl-password-value {
    font-family: 'SF Mono', Menlo, Consolas, monospace;
    font-size: 32px;
    font-weight: 700;
    color: var(--accent-cyan);
    letter-spacing: 0.4em;
    line-height: 1;
    text-indent: 0.4em;
    text-shadow: 0 0 20px rgba(0, 152, 199, 0.15);
}

.dl-hint {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0 0 24px;
    text-align: center;
}

.modal-content--download .modal-actions {
    margin-top: 0;
}

/* Download modal content shown immediately (no stagger) */
.modal-content--download .dl-header,
.modal-content--download .dl-password,
.modal-content--download .dl-hint,
.modal-content--download .modal-actions {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    .modal-content--download,
    .modal-content--download .dl-header,
    .modal-content--download .dl-password,
    .modal-content--download .dl-hint,
    .modal-content--download .modal-actions {
        transition: none !important;
        transform: none !important;
    }
}

@media (max-width: 480px) {
    .modal-content--download {
        max-width: 100%;
        padding: 28px 24px 24px;
    }
    .dl-password-value {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .hero {
        min-height: auto;
        padding: 110px 16px 60px;
        text-align: center;
    }
    .hero-title {
        font-size: clamp(1.8rem, 7vw, 2.4rem);
    }
    .hero-subtitle {
        font-size: 0.9rem;
    }
    .hero-badge {
        font-size: 0.78rem;
    }
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
    .hero-highlight {
        font-size: 0.88rem;
        padding: 0 4px;
    }
    .hero-note {
        font-size: 0.82rem;
        padding: 0 4px;
    }
    .section {
        padding: 44px 14px;
    }
    .section-header {
        margin-bottom: 28px;
    }
    .section-label {
        font-size: 0.7rem;
    }
    .section-header .section-title {
        font-size: 1.35rem;
    }
    .product-card {
        padding: 20px 14px;
    }
    .product-card-desc {
        font-size: 0.82rem;
    }
    .pricing-card {
        padding: 20px 14px;
    }
    .nav-logo {
        font-size: 0.95rem;
    }
    .logo-icon {
        font-size: 1.05rem;
    }
    .purchase-section {
        padding: 14px;
    }
    .card-key-display {
        font-size: 0.88rem;
        padding: 24px 14px;
        word-break: break-all;
    }
    .card-key-display .success-icon {
        width: 52px;
        height: 52px;
        font-size: 1.5rem;
        margin-bottom: 18px;
    }
    .card-key-display h3 {
        font-size: 1.1rem;
        margin-bottom: 18px;
    }
    .card-key-box {
        padding: 14px;
    }
    .card-key-value {
        font-size: 0.95rem;
    }
    /* 订单信息卡片移动端：左右分栏改为上下堆叠 */
    .order-info-box > div {
        flex-direction: column !important;
        gap: 4px !important;
    }
    .order-info-box {
        font-size: 0.78rem !important;
        padding: 10px 12px !important;
    }
    .delivery-content-box {
        font-size: 0.82rem !important;
        padding: 12px 14px !important;
    }
    .download-link-row {
        flex-wrap: wrap;
        gap: 6px;
    }
    .download-link-row .download-label {
        width: 100%;
    }
    .tutorial-page {
        padding: calc(var(--nav-height) + 20px) 12px 20px;
    }
    .tutorial-download-box {
        padding: 12px 14px;
    }
    .tutorial-download-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 3px;
    }
    .tutorial-download-label {
        width: auto;
    }
    .tutorial-download-link {
        font-size: 0.85rem;
    }
    .footer {
        padding: 28px 14px;
        font-size: 0.82rem;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }
    .duration-select-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .modal-content {
        padding: 30px 20px;
    }

    .modal-title {
        font-size: 24px;
    }

    .qq-number {
        font-size: 28px;
    }

    .purchase-page {
        padding-left: 12px;
        padding-right: 12px;
        padding-top: calc(var(--nav-height) + 24px);
    }
    .purchase-section {
        padding: 18px;
        border-radius: var(--radius-md);
    }
    .product-select-grid {
        gap: 10px;
    }
    .pricing-grid {
        gap: 10px;
    }
    .form-input, .form-group {
        width: 100%;
    }
    .form-input {
        padding: 12px 14px;
        font-size: 0.95rem;
    }
    .purchase-section .section-title {
        font-size: 1rem;
        margin-bottom: 14px;
    }
    .product-select-grid {
        gap: 10px;
    }
}

/* ===== Quantity Control ===== */
.quantity-control {
    display: flex;
    align-items: center;
    gap: 0;
    width: fit-content;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.qty-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qty-btn:hover {
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
}

.qty-btn:active {
    background: rgba(0, 152, 199, 0.15);
}

.qty-input {
    width: 48px;
    height: 36px;
    border: none;
    border-left: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
    font-family: var(--font-heading);
}

.qty-input:focus {
    outline: none;
    background: var(--accent-cyan-dim);
}

/* ===== Disclaimer Section ===== */
.disclaimer-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 60px 24px !important;
}

.disclaimer-box {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.disclaimer-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent-amber);
    text-align: center;
    margin-bottom: 24px;
}

.disclaimer-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.disclaimer-content p:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.disclaimer-content strong {
    color: var(--text-primary);
    font-weight: 600;
}

@media (max-width: 768px) {
    .disclaimer-box {
        padding: 24px;
    }

    .disclaimer-content p {
        font-size: 0.85rem;
    }
}

/* ============================================
   Premium Hero - 高级感首页（背景图）
   ============================================ */

.hero-premium {
    position: relative;
    min-height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.hero-premium-bg {
    position: absolute;
    inset: 0;
    background-image: url('images/BJ.jpg?v=92');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 0;
    animation: bg-zoom 30s ease-in-out infinite alternate;
}

@keyframes bg-zoom {
    0% { transform: scale(1); }
    100% { transform: scale(1.08); }
}

.hero-premium-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(135deg, rgba(10,14,23,0.88) 0%, rgba(10,14,23,0.72) 50%, rgba(10,14,23,0.85) 100%),
        radial-gradient(ellipse at top left, rgba(0,152,199,0.15) 0%, transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(232,149,10,0.12) 0%, transparent 50%);
    z-index: 1;
}

.hero-premium-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    padding: 100px 48px 40px;
    flex: 1;
}

.hero-premium-left {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.hero-premium-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    width: fit-content;
}

.hero-premium-tag .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #00d4ff;
    box-shadow: 0 0 10px rgba(0,212,255,0.8);
    animation: pulse-dot 2s ease-in-out infinite;
}

.hero-premium-title {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1;
    letter-spacing: -2px;
    margin: 8px 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.hero-premium-title .title-cyan {
    background: linear-gradient(135deg, #00d4ff 0%, #0098c7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 40px rgba(0,212,255,0.3);
}

.hero-premium-title .title-amber {
    background: linear-gradient(135deg, #ffb84d 0%, #e8950a 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 40px rgba(232,149,10,0.3);
}

.hero-premium-desc {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.6;
    max-width: 500px;
    font-weight: 400;
}

.hero-premium-stats {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 20px 0;
}

.premium-stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.premium-stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    line-height: 1;
}

.premium-stat-value.cyan {
    background: linear-gradient(135deg, #00d4ff, #0098c7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.premium-stat-value.amber {
    background: linear-gradient(135deg, #ffb84d, #e8950a);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.premium-stat-value.price {
    background: linear-gradient(135deg, #fff, #d0d0d0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.premium-stat-label {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.5);
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.premium-stat-divider {
    width: 1px;
    height: 36px;
    background: rgba(255,255,255,0.15);
}

.hero-premium-buttons {
    display: flex;
    gap: 14px;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 8px;
}

.hero-premium-buttons {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

/* 新拟态风格按钮 */
.btn-premium-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: #0f172a;
    color: #fff;
    border: none;
    border-radius: 14px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    line-height: 1;
    box-shadow: 6px 6px 12px rgba(0, 0, 0, 0.4),
                -6px -6px 12px rgba(255, 255, 255, 0.03),
                inset 1px 1px 1px rgba(255, 255, 255, 0.05);
    transition: all 0.25s ease;
}

.btn-premium-primary:hover {
    color: #22d3ee;
    box-shadow: 8px 8px 16px rgba(0, 0, 0, 0.5),
                -8px -8px 16px rgba(255, 255, 255, 0.04),
                inset 1px 1px 1px rgba(255, 255, 255, 0.06),
                0 0 20px rgba(6, 182, 212, 0.4);
}

.btn-premium-primary:active {
    box-shadow: inset 4px 4px 8px rgba(0, 0, 0, 0.5),
                inset -4px -4px 8px rgba(255, 255, 255, 0.03);
}

.btn-premium-primary .btn-p-arrow {
    transition: transform 0.25s ease;
}

.btn-premium-primary:hover .btn-p-arrow {
    transform: translateX(3px);
}

.btn-premium-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: #1e293b;
    color: #22d3ee;
    border: none;
    border-radius: 14px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    line-height: 1;
    box-shadow: 6px 6px 12px rgba(0, 0, 0, 0.4),
                -6px -6px 12px rgba(255, 255, 255, 0.03),
                inset 1px 1px 1px rgba(255, 255, 255, 0.04);
    transition: all 0.25s ease;
}

.btn-premium-outline:hover {
    color: #67e8f9;
    box-shadow: 8px 8px 16px rgba(0, 0, 0, 0.5),
                -8px -8px 16px rgba(255, 255, 255, 0.04),
                inset 1px 1px 1px rgba(255, 255, 255, 0.06),
                0 0 20px rgba(34, 211, 238, 0.4);
}

.btn-premium-outline:active {
    box-shadow: inset 4px 4px 8px rgba(0, 0, 0, 0.5),
                inset -4px -4px 8px rgba(255, 255, 255, 0.03);
}

.btn-premium-trial {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: #2a1f0e;
    color: #fbbf24;
    border: none;
    border-radius: 14px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    line-height: 1;
    box-shadow: 6px 6px 12px rgba(0, 0, 0, 0.4),
                -6px -6px 12px rgba(255, 255, 255, 0.03),
                inset 1px 1px 1px rgba(255, 255, 255, 0.04);
    transition: all 0.25s ease;
}

.btn-premium-trial:hover {
    color: #f59e0b;
    box-shadow: 8px 8px 16px rgba(0, 0, 0, 0.5),
                -8px -8px 16px rgba(255, 255, 255, 0.04),
                inset 1px 1px 1px rgba(255, 255, 255, 0.06),
                0 0 20px rgba(251, 191, 36, 0.4);
}

.btn-premium-trial:active {
    box-shadow: inset 4px 4px 8px rgba(0, 0, 0, 0.5),
                inset -4px -4px 8px rgba(255, 255, 255, 0.03);
}

/* Right Showcase Cards */
.hero-premium-right {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.premium-showcase-card {
    position: relative;
    background: rgba(255,255,255,0.06);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    padding: 24px;
    transition: all 0.4s;
    overflow: hidden;
}

.premium-showcase-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    opacity: 0.6;
    transition: opacity 0.3s;
}

.premium-showcase-card.bp-card::before {
    background: linear-gradient(90deg, transparent, #00d4ff, transparent);
}

.premium-showcase-card.jy-card::before {
    background: linear-gradient(90deg, transparent, #ffb84d, transparent);
}

.premium-showcase-card:hover {
    transform: translateY(-4px);
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.2);
}

.premium-showcase-card:hover::before {
    opacity: 1;
}

.showcase-card-body {
    display: flex;
    align-items: stretch;
    gap: 16px;
}

.showcase-card-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.showcase-card-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 12px;
}

.showcase-card-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: rgba(0,212,255,0.15);
    color: #00d4ff;
}

.jy-card .showcase-card-icon {
    background: rgba(255,184,77,0.15);
    color: #ffb84d;
}

.showcase-card-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.showcase-card-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
}

.showcase-card-subtitle {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
}

.showcase-card-maps {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
}

.showcase-card-maps .map-tag {
    padding: 4px 10px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 14px;
    font-size: 0.72rem;
    color: rgba(255,255,255,0.75);
    transition: all 0.2s;
}

.bp-card .map-tag:hover {
    background: rgba(0,212,255,0.15);
    border-color: rgba(0,212,255,0.4);
    color: #00d4ff;
}

.jy-card .map-tag:hover {
    background: rgba(255,184,77,0.15);
    border-color: rgba(255,184,77,0.4);
    color: #ffb84d;
}

.showcase-card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: #00d4ff;
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: auto;
    text-decoration: none;
    transition: all 0.2s;
}

.jy-card .showcase-card-link {
    color: #ffb84d;
}

.showcase-card-link:hover {
    opacity: 0.8;
}

.showcase-card-link svg {
    transition: transform 0.2s;
}

.showcase-card-link:hover svg {
    transform: translateX(3px);
}

/* Bottom Bar */
.hero-premium-bottom {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    padding: 24px 48px 40px;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.premium-bottom-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255,255,255,0.7);
    font-size: 0.95rem;
    font-weight: 500;
}

.premium-bottom-item svg {
    color: #00d4ff;
}

.premium-bottom-divider {
    width: 1px;
    height: 16px;
    background: rgba(255,255,255,0.2);
}

/* Responsive: Premium Hero */
@media (max-width: 1024px) {
    .hero-premium-content {
        grid-template-columns: 1fr;
        gap: 32px;
        padding: calc(var(--nav-height) + 16px) 24px 24px;
    }
    .hero-premium-title {
        font-size: 3rem;
    }
    .hero-premium-bottom {
        gap: 16px;
        padding: 16px 24px 32px;
        flex-wrap: wrap;
    }
    .premium-bottom-divider {
        display: none;
    }
}

@media (max-width: 768px) {
    .hero-premium-content {
        padding: calc(var(--nav-height) + 12px) 16px 20px;
    }
    .hero-premium-title {
        font-size: 2.4rem;
        letter-spacing: -1px;
    }
    .hero-premium-desc {
        font-size: 0.95rem;
    }
    .hero-premium-stats {
        gap: 12px 16px;
        flex-wrap: wrap;
        justify-content: flex-start;
    }
    .premium-stat-value {
        font-size: 1.5rem;
    }
    .showcase-card-body {
        flex-direction: column;
    }
    .premium-showcase-card .showcase-carousel {
        width: 100%;
        height: 160px;
    }
    .hero-premium-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    .btn-premium-primary,
    .btn-premium-outline,
    .btn-premium-trial {
        justify-content: center;
    }
    .hero-premium-bottom {
        gap: 12px;
        padding: 12px 16px 24px;
    }
    .premium-bottom-item {
        font-size: 0.8rem;
    }
}

/* 超小屏幕（≤480px）：标题加长后进一步缩放，避免换行 */
@media (max-width: 480px) {
    .hero-premium-content {
        padding: calc(var(--nav-height) + 8px) 14px 16px;
    }
    .hero-premium-title {
        font-size: 2rem;
        letter-spacing: -0.5px;
        gap: 2px;
    }
    .hero-premium-desc {
        font-size: 0.85rem;
        line-height: 1.55;
    }
    .premium-stat-value {
        font-size: 1.3rem;
    }
    .premium-stat-label {
        font-size: 0.7rem;
    }
}

/* 极小屏幕（≤360px）：iPhone SE 等老机型 */
@media (max-width: 360px) {
    .hero-premium-title {
        font-size: 1.7rem;
        letter-spacing: -0.3px;
    }
}

/* ============================================
   End Premium Hero
   ============================================ */

/* ============================================
   体验卡领取页面
   ============================================ */
.trial-receive-page {
    min-height: calc(100vh - var(--nav-height, 64px));
    padding: calc(var(--nav-height, 64px) + 40px) 20px 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--bg-primary);
    position: relative;
}

.trial-back-float {
    position: absolute;
    top: calc(var(--nav-height, 64px) + 16px);
    left: 20px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: var(--card-shadow);
    transition: all 0.2s;
    z-index: 10;
}
.trial-back-float:hover {
    color: var(--accent-cyan);
    border-color: var(--border-glow-cyan);
    transform: translateX(-2px);
}

.trial-receive-container {
    width: 100%;
    max-width: 440px;
}

.trial-receive-hero {
    text-align: center;
    margin-bottom: 24px;
}
.trial-receive-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 14px;
    border-radius: 50%;
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
}
.trial-receive-title {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 8px;
    letter-spacing: -0.5px;
}
.trial-receive-subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.trial-receive-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    box-shadow: var(--card-shadow);
}

.trial-form-group {
    margin-bottom: 20px;
}
.trial-form-group:last-of-type {
    margin-bottom: 0;
}
.trial-form-label {
    display: block;
    font-family: var(--font-heading);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.trial-version-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}
.trial-version-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--card-shadow);
}
.trial-version-card:hover {
    border-color: var(--border-glow-cyan);
    box-shadow: var(--shadow-cyan);
    transform: translateY(-1px);
}
.trial-version-card.selected {
    border-color: var(--accent-cyan);
    background: var(--accent-cyan-dim);
    box-shadow: 0 0 0 1px var(--accent-cyan), var(--shadow-cyan);
}
.trial-version-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}
.trial-version-name {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.trial-captcha-row {
    display: flex;
    gap: 10px;
    align-items: center;
}
.trial-input {
    flex: 1;
    padding: 12px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 15px;
    color: var(--text-primary);
    background: var(--bg-card);
    outline: none;
    transition: border-color 0.2s;
    font-family: inherit;
}
.trial-input:focus {
    border-color: var(--accent-cyan);
}
.trial-input::placeholder {
    color: var(--text-muted);
}
.trial-captcha-img {
    height: 44px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    cursor: pointer;
    flex-shrink: 0;
}

.trial-submit-btn {
    width: 100%;
    padding: 14px;
    background: var(--accent-cyan);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 20px;
    font-family: inherit;
}
.trial-submit-btn:hover:not(:disabled) {
    background: #0080aa;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 152, 199, 0.3);
}
.trial-submit-btn:active:not(:disabled) {
    transform: translateY(0);
}
.trial-submit-btn:disabled {
    background: var(--text-muted);
    cursor: not-allowed;
}

.trial-result {
    display: none;
    margin-top: 18px;
    padding: 18px;
    border-radius: var(--radius-md);
}
.trial-result-success {
    background: #f0f9eb;
    border: 1px solid #e1f3d8;
}
.trial-result-error {
    background: #fef0f0;
    border: 1px solid #fde2e2;
    color: #f56c6c;
    text-align: center;
}
.trial-success-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: #67c23a;
    color: #fff;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 10px;
}
.trial-success-text {
    text-align: center;
    font-size: 15px;
    font-weight: 600;
    color: #67c23a;
    margin-bottom: 12px;
}
.trial-serial {
    font-size: 18px;
    font-weight: 700;
    text-align: center;
    color: var(--text-primary);
    letter-spacing: 1.5px;
    padding: 12px;
    background: #fff;
    border-radius: 8px;
    border: 1px dashed #67c23a;
    user-select: all;
    word-break: break-all;
    margin-bottom: 8px;
}
.trial-end-time {
    font-size: 13px;
    text-align: center;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 6px;
}
.trial-warn {
    font-size: 12px;
    text-align: center;
    color: #e6a23c;
}

.trial-tips {
    margin-top: 20px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}
.trial-tips p {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.9;
    margin: 0;
}

@media (max-width: 480px) {
    .trial-receive-card {
        padding: 24px 18px;
    }
    .trial-receive-title {
        font-size: 20px;
    }
}

/* ============================================
   End 体验卡领取页面
   ============================================ */

.hero-dark {
    position: relative;
    min-height: 100vh;
    background: var(--bg-primary);
    overflow: hidden;
    display: flex;
    align-items: center;
    padding: 80px 48px 40px;
}

.hero-dark::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 20% 30%, rgba(0,152,199,0.05) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 80% 70%, rgba(232,149,10,0.04) 0%, transparent 60%);
    z-index: 0;
}

.hero-dark::after {
    content: '';
    position: absolute;
    inset: 0;
    background: transparent;
    z-index: 0;
}

.hero-dark-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.hero-dark-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.hero-dark-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 14px;
    background: var(--accent-cyan-dim);
    border: 1px solid var(--border-glow-cyan);
    border-radius: 20px;
    color: var(--accent-cyan);
    font-size: 12px;
    font-weight: 500;
    width: fit-content;
}

.hero-dark-tag .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-cyan);
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.hero-dark-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -1px;
    color: var(--text-primary);
    margin: 4px 0;
}

.hero-dark-title .cyan {
    background: linear-gradient(135deg, #0098c7, #007aab);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-dark-title .amber {
    background: linear-gradient(135deg, #e8950a, #c97d08);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-dark-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.5;
    max-width: 480px;
}

.hero-dark-subtitle strong {
    color: var(--text-primary);
}

.hero-dark-stats {
    display: flex;
    gap: 28px;
    padding: 14px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.hero-dark-stat {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.hero-dark-stat-value {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-primary);
}

.hero-dark-stat-value.cyan { color: var(--accent-cyan); }
.hero-dark-stat-value.amber { color: var(--accent-amber); }

.hero-dark-stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-dark-buttons {
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
}

.btn-dark-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--gradient-cyan);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: 0 4px 20px rgba(0,152,199,0.25);
}

.btn-dark-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0,152,199,0.4);
}

.btn-dark-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: var(--card-shadow);
}

.btn-dark-outline:hover {
    border-color: var(--border-glow-cyan);
    background: var(--bg-card-hover);
}

.btn-dark-trial {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 22px;
    background: var(--accent-amber-dim);
    color: var(--accent-amber);
    border: 1px solid var(--border-glow-amber);
    border-radius: 10px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-dark-trial:hover {
    background: var(--accent-amber-glow);
}

/* Diagonal Dual Carousel */
.hero-dark-carousel {
    position: relative;
    width: 100%;
    height: 440px;
}

/* Hero showcase: mode cards + mini carousel */
.hero-showcase {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.hero-resolution-bar {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 10px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    width: fit-content;
}

.hero-resolution-bar .res-icon {
    font-size: 1.5rem;
}

.hero-resolution-bar .res-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.hero-resolution-bar .res-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--accent-cyan);
}

.hero-resolution-bar .res-value {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.showcase-mode {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 16px 20px;
    box-shadow: var(--card-shadow);
    transition: all 0.3s;
}

.showcase-mode:hover {
    transform: translateY(-2px);
    border-color: var(--border-glow-cyan);
}

.showcase-mode.jy-mode:hover {
    border-color: var(--border-glow-amber);
}

.showcase-mode .mode-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.showcase-mode .mode-icon {
    font-size: 1.2rem;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: var(--accent-cyan-dim);
}

.showcase-mode.jy-mode .mode-icon {
    background: var(--accent-amber-dim);
}

.showcase-mode .mode-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.showcase-mode .mode-maps {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.showcase-mode .map-chip {
    padding: 5px 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.showcase-mode .map-chip:hover {
    background: var(--accent-cyan-dim);
    border-color: var(--border-glow-cyan);
    color: var(--accent-cyan);
}

.showcase-mode.jy-mode .map-chip:hover {
    background: var(--accent-amber-dim);
    border-color: var(--border-glow-amber);
    color: var(--accent-amber);
}

.hero-mini-carousel {
    position: relative;
    height: 220px;
    margin-top: 8px;
}

.hero-mini-carousel .diagonal-card {
    width: 55%;
}

.hero-mini-carousel .bp-card {
    top: 0;
    left: 0;
}

.hero-mini-carousel .jy-card {
    bottom: 0;
    right: 0;
}

.hero-mini-carousel .diagonal-card img {
    height: 160px;
}

.hero-bottom-bar {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 48px;
    padding: 14px 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    box-shadow: var(--card-shadow);
    z-index: 2;
}

.hero-bottom-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.hero-bottom-item .bottom-icon {
    font-size: 1.1rem;
}

.diagonal-carousel {
    position: relative;
    width: 100%;
    height: 100%;
}

.diagonal-card {
    position: absolute;
    width: 58%;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    box-shadow: var(--card-shadow);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    text-decoration: none;
}

.diagonal-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.diagonal-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 16px;
    opacity: 0;
    transition: opacity 0.5s;
}

.diagonal-card:hover::after {
    opacity: 1;
}

.diagonal-card:hover {
    transform: scale(1.03);
}

/* BP版 - 左上 */
.diagonal-card.bp-card {
    top: 0;
    left: 0;
    z-index: 2;
    animation: diagonal-bp-pulse 4s ease-in-out infinite;
}

.diagonal-card.bp-card::after {
    background: linear-gradient(135deg, rgba(0,152,199,0.1), transparent 60%);
}

/* 经验版 - 右下 */
.diagonal-card.jy-card {
    bottom: 0;
    right: 0;
    z-index: 2;
    animation: diagonal-jy-pulse 4s ease-in-out infinite;
}

.diagonal-card.jy-card::after {
    background: linear-gradient(135deg, transparent 40%, rgba(232,149,10,0.1));
}

@keyframes diagonal-bp-pulse {
    0%, 100% {
        box-shadow: 0 0 0 rgba(0,152,199,0), var(--card-shadow);
        border-color: var(--border-glow-cyan);
    }
    50% {
        box-shadow: 0 0 30px rgba(0,152,199,0.15), var(--card-shadow);
        border-color: rgba(0,152,199,0.4);
    }
}

@keyframes diagonal-jy-pulse {
    0%, 100% {
        box-shadow: 0 0 0 rgba(232,149,10,0), var(--card-shadow);
        border-color: var(--border-glow-amber);
    }
    50% {
        box-shadow: 0 0 30px rgba(232,149,10,0.15), var(--card-shadow);
        border-color: rgba(232,149,10,0.4);
    }
}

.diagonal-card-label {
    position: absolute;
    bottom: 12px;
    left: 12px;
    padding: 6px 14px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 700;
    color: #fff;
    z-index: 3;
    backdrop-filter: blur(8px);
}

.diagonal-card-label.bp {
    background: rgba(0,152,199,0.85);
}

.diagonal-card-label.jy {
    background: rgba(232,149,10,0.85);
}

/* Dark Features Section */
.features-dark {
    background: #0d1220;
    padding: 80px 48px;
    position: relative;
}

.features-dark::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(rgba(0,152,199,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,152,199,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

.features-dark .section-header {
    text-align: center;
    margin-bottom: 48px;
    position: relative;
    z-index: 1;
}

.features-dark .section-label {
    font-size: 0.75rem;
    letter-spacing: 3px;
    color: #00d4ff;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.features-dark .section-title {
    font-size: 2.2rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
}

.features-dark .section-desc {
    font-size: 1rem;
    color: rgba(255,255,255,0.45);
}

.features-dark-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.feature-dark-card {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 16px;
    padding: 32px 28px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.feature-dark-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--fc, #00d4ff), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.feature-dark-card:hover::before {
    opacity: 1;
}

/* ============================================
   暴力查询警告弹窗
   ============================================ */
.query-warning-mask {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    animation: queryWarningFadeIn 0.2s ease-out;
}

@keyframes queryWarningFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes queryWarningSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.query-warning-modal {
    background: #fff;
    border-radius: 12px;
    padding: 32px 28px 24px;
    max-width: 400px;
    width: 90%;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: queryWarningSlideIn 0.3s ease-out;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.query-warning-icon {
    color: #ef4444;
    margin-bottom: 16px;
    display: flex;
    justify-content: center;
}

.query-warning-title {
    font-size: 20px;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 12px;
}

.query-warning-desc {
    font-size: 14px;
    color: #6b7280;
    line-height: 1.6;
    margin-bottom: 24px;
}

.query-warning-btn {
    background: #ef4444;
    color: #fff;
    border: none;
    padding: 10px 32px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.query-warning-btn:hover {
    background: #dc2626;
}

.query-warning-btn:active {
    transform: scale(0.97);
}

@media (max-width: 480px) {
    .query-warning-modal {
        padding: 24px 20px 20px;
    }
    .query-warning-title {
        font-size: 18px;
    }
    .query-warning-desc {
        font-size: 13px;
    }
}


.feature-dark-card:hover {
    background: rgba(255,255,255,0.05);
    border-color: rgba(255,255,255,0.1);
    transform: translateY(-4px);
}

.feature-dark-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.feature-dark-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
}

.feature-dark-desc {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.45);
    line-height: 1.6;
}

/* Disclaimer Dark */
.disclaimer-dark {
    background: #0a0e17;
    padding: 60px 48px 80px;
}

.disclaimer-dark .disclaimer-box {
    max-width: 1000px;
    margin: 0 auto;
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 16px;
    padding: 36px;
}

.disclaimer-dark .disclaimer-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: #f5a623;
    margin-bottom: 20px;
}

.disclaimer-dark .disclaimer-content p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.5);
    line-height: 1.8;
    margin-bottom: 16px;
}

.disclaimer-dark .disclaimer-content p strong {
    color: rgba(255,255,255,0.75);
}

/* ============================================
   Dark Product Detail Page
   ============================================ */

.product-detail-dark {
    position: relative;
    min-height: 100vh;
    background: var(--bg-primary);
    padding: 100px 48px 60px;
    overflow: hidden;
}

.product-detail-dark::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 20% 30%, rgba(0,152,199,0.04) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 80% 70%, rgba(232,149,10,0.03) 0%, transparent 60%);
    pointer-events: none;
    z-index: 1;
}

.product-detail-dark::after {
    content: '';
    position: absolute;
    inset: 0;
    background: transparent;
    pointer-events: none;
    z-index: 0;
}

.product-particles-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.product-detail-dark > .product-particles-canvas ~ .pd-dark-inner,
.pd-dark-inner {
    position: relative;
    z-index: 3;
    max-width: 1200px;
    margin: 0 auto;
}

/* Algorithm Strategy */
.pd-strategy {
    margin-bottom: 48px;
}

/* Brief Description Bar */
.pd-brief-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}
.pd-brief {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 18px 24px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.pd-brief-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-color);
}
.pd-brief.pd-theme-bp .pd-brief-icon {
    background: rgba(34,211,238,0.1);
    border-color: rgba(34,211,238,0.3);
}
.pd-brief.pd-theme-exp .pd-brief-icon {
    background: rgba(245,158,11,0.1);
    border-color: rgba(245,158,11,0.3);
}
.pd-brief-content {
    flex: 1;
    min-width: 0;
    counter-reset: brief-item;
}
.pd-brief-title {
    font-size: 17px;
    font-weight: 700;
    color: #000;
    margin-bottom: 6px;
}
.pd-brief.pd-theme-bp .pd-brief-title {
    color: #0891b2;
}
.pd-brief.pd-theme-exp .pd-brief-title {
    color: #d97706;
}
.pd-brief-text {
    font-size: 16px;
    color: #000;
    font-weight: 600;
    line-height: 1.6;
    counter-increment: brief-item;
}
.pd-brief-text::before {
    content: counter(brief-item) ". ";
    color: #0891b2;
    font-weight: 700;
}
.pd-brief.pd-theme-exp .pd-brief-text::before {
    color: #d97706;
}
.pd-brief-text.pd-brief-sub {
    font-size: 16px;
    color: #1a1a1a;
    font-weight: 600;
    margin-top: 4px;
}

.pd-strategy .pd-section-head {
    margin-bottom: 16px;
}

.pd-strategy-flow {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr;
    align-items: stretch;
    gap: 0;
}

.pd-strategy-step {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s;
    box-shadow: var(--card-shadow);
}

.pd-strategy-step:hover {
    transform: translateY(-2px);
    border-color: var(--border-glow-cyan);
    background: var(--bg-card-hover);
}

.pd-theme-jy .pd-strategy-step:hover {
    border-color: rgba(245, 158, 11, 0.3);
}

.pd-strategy-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.pd-strategy-text {
    flex: 1;
    min-width: 0;
}

.pd-strategy-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.pd-strategy-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.pd-strategy-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 8px;
    color: var(--text-tertiary);
    font-size: 1.2rem;
    font-weight: 300;
    user-select: none;
}

@media (max-width: 768px) {
    .pd-strategy-flow {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    .pd-strategy-arrow {
        transform: rotate(90deg);
        padding: 2px 0;
        justify-self: center;
    }
    .pd-strategy-step {
        padding: 14px 16px;
    }
}

/* Version Tabs — Compact Segmented Control */
.pd-tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 0;
}

.pd-tabs-track {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 3px;
    background: rgba(0, 0, 0, 0.32);
    border-radius: 10px;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.4), 0 1px 0 rgba(255, 255, 255, 0.03);
}

.pd-tab {
    position: relative;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 7px 22px;
    border-radius: 7px;
    color: rgba(255, 255, 255, 0.4);
    font-size: 13.5px;
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s ease;
    -webkit-tap-highlight-color: transparent;
    white-space: nowrap;
    cursor: pointer;
}

.pd-tab:hover {
    color: rgba(255, 255, 255, 0.65);
}

.pd-tab.is-active {
    color: #fff;
}

.pd-tab-icon {
    font-size: 14px;
    line-height: 1;
    transition: transform 0.2s ease;
}

.pd-tab.is-active .pd-tab-icon {
    transform: scale(1.1);
}

.pd-tab-text {
    letter-spacing: 0.2px;
}

.pd-tabs-thumb {
    position: absolute;
    top: 3px;
    left: 0;
    height: calc(100% - 6px);
    border-radius: 7px;
    z-index: 1;
    transition: none;
    pointer-events: none;
    opacity: 0;
}

.pd-tabs-thumb.is-ready {
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), width 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.pd-tabs-thumb[data-theme="cyan"] {
    background: #0098c7;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.pd-tabs-thumb[data-theme="amber"] {
    background: #d97f0a;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

@media (prefers-reduced-motion: reduce) {
    .pd-tabs-thumb.is-ready,
    .pd-tab-icon {
        transition: none;
    }
}

.pd-tabs-hint {
    margin: 10px 0 32px;
    text-align: center;
    font-size: 12px;
    color: var(--text-tertiary);
    opacity: 0.7;
    letter-spacing: 0.2px;
}

/* Product Carousel in Product Page */
.pd-carousel-section {
    margin-bottom: 48px;
}

.pd-screenshots-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 16px;
}

.pd-screenshot-item {
    position: relative;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    box-shadow: var(--card-shadow);
    cursor: pointer;
    transition: all 0.3s;
}

.pd-screenshot-item:hover {
    transform: translateY(-4px);
    border-color: var(--border-glow-cyan);
    box-shadow: 0 8px 24px rgba(0,152,199,0.12);
}

.pd-screenshot-item img {
    width: 100%;
    height: auto;
    max-height: 320px;
    object-fit: contain;
    display: block;
    transition: transform 0.5s;
    background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
    padding: 8px;
    box-sizing: border-box;
}

.pd-screenshot-item:hover img {
    transform: scale(1.03);
}

.pd-screenshot-num {
    position: absolute;
    top: 10px;
    left: 10px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.6);
    color: #fff;
    border-radius: 50%;
    font-size: 0.8rem;
    font-weight: 700;
    backdrop-filter: blur(4px);
    z-index: 2;
}

.premium-showcase-card .showcase-carousel {
    width: 42%;
    min-width: 160px;
    height: 180px;
    border-radius: 10px;
    overflow: hidden;
    background: #111;
    flex-shrink: 0;
}

.showcase-carousel {
    position: relative;
    width: 100%;
    height: 150px;
    border-radius: 10px;
    overflow: hidden;
    background: #111;
    margin: 10px 0 12px;
    flex-shrink: 0;
}

.sc-slides {
    position: relative;
    width: 100%;
    height: 100%;
}

.sc-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.45s ease;
    pointer-events: none;
    z-index: 1;
}

.sc-slide.active {
    opacity: 1;
    pointer-events: auto;
    z-index: 2;
}

.sc-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 10px;
}

.sc-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.5);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    backdrop-filter: blur(6px);
    transition: background 0.2s;
    z-index: 5;
    padding: 0;
}

.sc-nav:hover {
    background: rgba(0,0,0,0.8);
}

.sc-prev { left: 8px; }
.sc-next { right: 8px; }

.sc-dots {
    position: absolute;
    bottom: 6px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 5px;
    z-index: 5;
}

.sc-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(255,255,255,0.45);
    cursor: pointer;
    transition: all 0.2s;
}

.sc-dot.active {
    background: #fff;
    width: 16px;
    border-radius: 3px;
}

@media (max-width: 768px) {
    .showcase-carousel {
        height: 130px;
    }
}

@media (max-width: 768px) {
    .pd-screenshots-grid {
        grid-template-columns: 1fr;
    }
    .pd-screenshot-item img {
        max-height: 280px;
    }
}

/* Screenshot Lightbox */
.screenshot-lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.92);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    animation: lightbox-fade-in 0.25s ease;
}

@keyframes lightbox-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

.screenshot-lightbox-inner {
    position: relative;
    max-width: 90%;
    max-height: 90%;
}

.screenshot-lightbox-inner img {
    max-width: 100%;
    max-height: 90vh;
    display: block;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.screenshot-lightbox-close {
    position: absolute;
    top: -16px;
    right: -16px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #fff;
    color: #333;
    border: none;
    font-size: 24px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}

.screenshot-lightbox-close:hover {
    background: #f5f5f5;
}

.pd-carousel-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 4px 0;
    line-height: 1.3;
}

.pd-carousel-subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0;
}

/* 产品页区块标题（实机画面/功能特性/选择套餐） */
.pd-section-head {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 22px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border-color);
}

.pd-section-bar {
    width: 4px;
    height: 38px;
    border-radius: 2px;
    flex-shrink: 0;
}

.pd-theme-bp .pd-section-bar {
    background: linear-gradient(180deg, #06b6d4, #0891b2);
    box-shadow: 0 0 14px rgba(8, 145, 178, 0.35);
}

.pd-theme-jy .pd-section-bar {
    background: linear-gradient(180deg, #f59e0b, #d97706);
    box-shadow: 0 0 14px rgba(217, 119, 6, 0.35);
}

.pd-section-head-text {
    flex: 1;
    min-width: 0;
}

.pd-section-sub {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.4;
}

.pd-section-num {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
    opacity: 0.12;
    flex-shrink: 0;
    font-family: 'Inter', 'Segoe UI', sans-serif;
    letter-spacing: -1px;
}

.pd-theme-bp .pd-section-num {
    color: #0891b2;
}

.pd-theme-jy .pd-section-num {
    color: #d97706;
}

@media (max-width: 480px) {
    .pd-section-head {
        gap: 10px;
        margin-bottom: 18px;
        padding-bottom: 12px;
    }
    .pd-section-bar {
        height: 32px;
    }
    .pd-section-num {
        font-size: 1.6rem;
    }
    .pd-carousel-title,
    .pd-features-title,
    .pd-pricing-title {
        font-size: 1.25rem;
    }
}

.pd-carousel-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.pd-carousel-card {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    box-shadow: var(--card-shadow);
    transition: all 0.4s;
    cursor: pointer;
    text-decoration: none;
}

.pd-carousel-card:hover {
    transform: translateY(-4px);
}

.pd-carousel-card.active-card {
    border-width: 2px;
}

.pd-carousel-card.active-card.cyan-border {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 30px rgba(0,152,199,0.12), var(--card-shadow);
}

.pd-carousel-card.active-card.amber-border {
    border-color: var(--accent-amber);
    box-shadow: 0 0 30px rgba(232,149,10,0.12), var(--card-shadow);
}

.pd-carousel-card.inactive-card {
    opacity: 0.6;
}

.pd-carousel-card.inactive-card:hover {
    opacity: 0.85;
}

.pd-carousel-card img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    display: block;
}

.pd-carousel-card-info {
    padding: 20px;
    background: var(--bg-card);
}

.pd-carousel-card-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.pd-carousel-card-badge.cyan { background: var(--accent-cyan); }
.pd-carousel-card-badge.amber { background: var(--accent-amber); }

.pd-carousel-card-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.pd-carousel-card-hint {
    display: inline-block;
    margin-top: 8px;
    font-size: 12px;
    color: var(--accent-cyan);
    font-weight: 600;
}

/* Features List Dark */
.pd-features-dark {
    margin-bottom: 48px;
}

.pd-features-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 4px 0;
    line-height: 1.3;
}

.pd-features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.pd-feature-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 18px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s;
    box-shadow: var(--card-shadow);
}

.pd-feature-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-glow-cyan);
}

.pd-feature-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.pd-feature-text h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.pd-feature-text p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Pricing Dark */
.pd-pricing-dark {
    margin-bottom: 48px;
}

.pd-pricing-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 4px 0;
    line-height: 1.3;
}

.pd-pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.pd-pricing-card {
    padding: 28px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: var(--card-shadow);
}

.pd-pricing-card:hover {
    background: var(--bg-card-hover);
}

.pd-pricing-card.selected {
    border-width: 2px;
}

.pd-pricing-card.selected.cyan-selected {
    border-color: var(--accent-cyan);
    background: var(--accent-cyan-dim);
    box-shadow: 0 0 30px rgba(0,152,199,0.12);
}

.pd-pricing-card.selected.amber-selected {
    border-color: var(--accent-amber);
    background: var(--accent-amber-dim);
    box-shadow: 0 0 30px rgba(232,149,10,0.12);
}

.pd-pricing-duration {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-weight: 500;
}

.pd-pricing-price {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.pd-pricing-unit {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.btn-dark-buy {
    display: block;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    padding: 16px 40px;
    background: var(--gradient-cyan);
    color: #fff;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 20px rgba(0,152,199,0.25);
}

.btn-dark-buy:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0,152,199,0.4);
}

/* Responsive: Dark Theme */
@media (max-width: 1024px) {
    .hero-dark {
        padding: 70px 24px 80px;
    }
    .hero-dark-inner {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .hero-dark-carousel {
        height: 360px;
    }
    .hero-dark-title {
        font-size: 2.4rem;
    }
    .hero-bottom-bar {
        gap: 24px;
        padding: 12px 28px;
    }
    .hero-mini-carousel {
        height: 260px;
    }
    .hero-mini-carousel .diagonal-card img {
        height: 200px;
    }
    .pd-carousel-row {
        grid-template-columns: 1fr;
    }
    .pd-pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero-dark {
        padding: 70px 16px 100px;
        min-height: auto;
    }
    .hero-dark-title {
        font-size: 2rem;
    }
    .hero-dark-stats {
        gap: 20px;
        flex-wrap: wrap;
    }
    .hero-dark-stat-value {
        font-size: 1.3rem;
    }
    .hero-dark-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    .hero-dark-carousel {
        height: 300px;
    }
    .diagonal-card {
        width: 65%;
    }
    .hero-bottom-bar {
        position: relative;
        bottom: auto;
        left: auto;
        transform: none;
        margin-top: 24px;
        gap: 12px;
        padding: 12px 16px;
        border-radius: 16px;
        flex-wrap: wrap;
        justify-content: center;
    }
    .hero-bottom-item {
        font-size: 0.8rem;
    }
    .hero-mini-carousel {
        height: 220px;
    }
    .hero-mini-carousel .diagonal-card img {
        height: 160px;
    }
    .product-detail-dark {
        padding: 80px 16px 40px;
    }
    .pd-features-grid {
        grid-template-columns: 1fr;
    }
    .pd-pricing-grid {
        grid-template-columns: 1fr;
    }
}


/* ============================================
   新产品页样式 (np- = new product)
   打破上下堆叠，左右分栏 + bento 网格
   ============================================ */

/* 隐藏旧产品页组件 */
.pd-brief-list,
.pd-tabs,
.pd-tabs-hint,
.pd-strategy,
.pd-carousel-section,
.pd-features-dark,
.pd-pricing-dark {
    display: none !important;
}

/* Tab 切换 - 紧凑横排 */
.np-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 48px;
    padding: 6px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
    box-shadow: var(--card-shadow);
}
.np-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 28px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.np-tab:hover {
    color: var(--text-primary);
    background: var(--bg-card-hover);
}
.np-tab.is-active[data-theme="cyan"] {
    background: var(--gradient-cyan);
    color: #fff;
    box-shadow: 0 4px 14px rgba(0, 152, 199, 0.3);
}
.np-tab.is-active[data-theme="amber"] {
    background: var(--gradient-amber);
    color: #fff;
    box-shadow: 0 4px 14px rgba(232, 149, 10, 0.3);
}
.np-tab-icon {
    font-size: 18px;
}

/* Hero 区 - 左右分栏 */
.np-hero {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 48px;
    align-items: center;
    margin-bottom: 64px;
    padding: 8px 0 24px;
}
.np-hero-left {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

/* 标题行：图标 + 名称 + 英文副标题 */
.np-hero-head {
    display: flex;
    align-items: center;
    gap: 16px;
}
.np-hero-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    flex-shrink: 0;
    background: var(--bg-card);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}
.np-theme-cyan .np-hero-icon {
    background: var(--accent-cyan-dim);
}
.np-theme-amber .np-hero-icon {
    background: var(--accent-amber-dim);
}
.np-hero-title-wrap {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.np-hero-version {
    font-size: 1.9rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.01em;
    margin: 0;
}
.np-theme-cyan .np-hero-version {
    color: var(--accent-cyan);
}
.np-theme-amber .np-hero-version {
    color: var(--accent-amber);
}
.np-hero-sub {
    font-size: 0.82rem;
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 0.8px;
    text-transform: uppercase;
}

/* 一句话描述 */
.np-hero-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.55;
    margin: 0;
    font-weight: 500;
}

/* 核心数据 2x2 网格 */
.np-hero-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}
.np-hero-stat {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.np-hero-stat:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.06);
}
.np-theme-cyan .np-hero-stat:hover {
    border-color: rgba(0, 152, 199, 0.3);
}
.np-theme-amber .np-hero-stat:hover {
    border-color: rgba(232, 149, 10, 0.3);
}
.np-hero-stat-value {
    font-size: 1.6rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
}
.np-theme-cyan .np-hero-stat-value {
    color: var(--accent-cyan);
}
.np-theme-amber .np-hero-stat-value {
    color: var(--accent-amber);
}
.np-hero-stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
    font-weight: 500;
}

/* 收益标签 chip 横向排列 */
.np-hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.np-hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.np-hero-tag-check {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 700;
    flex-shrink: 0;
}
.np-theme-cyan .np-hero-tag-check {
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
}
.np-theme-amber .np-hero-tag-check {
    background: var(--accent-amber-dim);
    color: var(--accent-amber);
}
.np-theme-cyan .np-hero-tag:hover {
    border-color: rgba(0, 152, 199, 0.35);
    background: var(--accent-cyan-dim);
}
.np-theme-amber .np-hero-tag:hover {
    border-color: rgba(232, 149, 10, 0.35);
    background: var(--accent-amber-dim);
}

/* 双按钮区 */
.np-hero-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 4px;
}

/* Hero 购买按钮 */
.np-hero-buy {
    width: fit-content;
    padding: 13px 34px;
    border: none;
    border-radius: 999px;
    font-size: 0.98rem;
    font-weight: 700;
    color: #fff;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.np-theme-cyan .np-hero-buy {
    background: var(--gradient-cyan);
    box-shadow: 0 4px 16px rgba(0, 152, 199, 0.3);
}
.np-theme-amber .np-hero-buy {
    background: var(--gradient-amber);
    box-shadow: 0 4px 16px rgba(232, 149, 10, 0.3);
}
.np-hero-buy:hover {
    transform: translateY(-2px);
}
.np-theme-cyan .np-hero-buy:hover {
    box-shadow: 0 8px 24px rgba(0, 152, 199, 0.4);
}
.np-theme-amber .np-hero-buy:hover {
    box-shadow: 0 8px 24px rgba(232, 149, 10, 0.4);
}
.np-hero-tutorial {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 8px 4px;
    transition: color 0.2s ease;
}
.np-hero-tutorial:hover {
    color: var(--accent-cyan);
}
.np-theme-amber .np-hero-tutorial:hover {
    color: var(--accent-amber);
}

/* Hero 右侧大图 - 容器比例贴合图片实际尺寸 373:450 */
.np-hero-right {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.1);
    aspect-ratio: 373 / 450;
    max-height: 450px;
}
.np-hero-img {
    width: 100%;
    height: 100%;
    object-fit: fill;
    display: block;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.np-hero-right:hover .np-hero-img {
    transform: scale(1.04);
}
.np-hero-img-tag {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 5px 14px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(8px);
    z-index: 3;
    pointer-events: none;
}

/* Hero 区轮播 */
.np-carousel {
    cursor: grab;
}
.np-carousel-track {
    display: flex;
    width: 100%;
    height: 100%;
    transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
}
.np-carousel-slide {
    flex: 0 0 100%;
    width: 100%;
    height: 100%;
    position: relative;
}
.np-carousel-slide .np-hero-img {
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.np-carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.42);
    color: #fff;
    border: none;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease, opacity 0.2s ease;
    z-index: 3;
    opacity: 0;
    backdrop-filter: blur(6px);
}
.np-carousel:hover .np-carousel-arrow {
    opacity: 1;
}
.np-carousel-arrow:hover {
    background: rgba(0, 0, 0, 0.7);
}
.np-carousel-prev { left: 12px; }
.np-carousel-next { right: 12px; }
.np-carousel-dots {
    position: absolute;
    bottom: 14px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 7px;
    z-index: 3;
}
.np-carousel-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.55);
    border: none;
    cursor: pointer;
    padding: 0;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.np-carousel-dot.is-active {
    background: #fff;
    width: 22px;
    border-radius: 4px;
}
.np-carousel-dot:hover {
    background: rgba(255, 255, 255, 0.85);
}

/* 通用 section 标题（去掉编号和色条模板） */
.np-section-head {
    margin-bottom: 28px;
}
.np-section-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.3;
    letter-spacing: -0.01em;
}
.np-section-sub {
    font-size: 0.92rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* 实机画廊 - 2x2 等分网格，容器比例贴合图片实际尺寸 373:450 */
.np-gallery {
    margin-bottom: 80px;
    max-width: 920px;
}
.np-gallery-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto;
    gap: 12px;
}
.np-gallery-item {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--card-shadow);
    background: var(--bg-card);
    aspect-ratio: 373 / 450;
}
.np-gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: fill;
    display: block;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.np-gallery-item:hover img {
    transform: scale(1.06);
}
.np-gallery-main {
    grid-row: auto;
}
.np-gallery-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,0.25) 100%);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}
.np-gallery-item:hover::after {
    opacity: 1;
}

/* 执行策略 - 独立区块，横向 3 列紧凑卡片 */
.np-strategy-col {
    display: flex;
    flex-direction: column;
    margin-bottom: 56px;
}
.np-strategy-flow {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}
.np-strategy-step {
    display: flex;
    flex-direction: row;
    align-items: center;
    text-align: left;
    gap: 14px;
    padding: 16px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--card-shadow);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}
.np-strategy-step::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    height: 3px;
    width: auto;
    bottom: auto;
    opacity: 0;
    transition: opacity 0.3s;
}
.np-theme-cyan .np-strategy-step::before { background: var(--accent-cyan); }
.np-theme-amber .np-strategy-step::before { background: var(--accent-amber); }
.np-strategy-step:hover {
    transform: translateY(-4px);
    border-color: transparent;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}
.np-strategy-step:hover::before {
    opacity: 1;
}
.np-strategy-num {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
}
.np-theme-cyan .np-strategy-num {
    background: var(--accent-cyan-dim);
    color: var(--accent-cyan);
}
.np-theme-amber .np-strategy-num {
    background: var(--accent-amber-dim);
    color: var(--accent-amber);
}
.np-strategy-icon {
    font-size: 1.8rem;
    flex-shrink: 0;
    line-height: 1;
}
.np-strategy-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    flex: 1;
    min-width: 0;
}

/* 功能列 */
.np-features-col {
    display: flex;
    flex-direction: column;
    margin-bottom: 80px;
}
.np-features-bento {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}
.np-feature {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 18px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--card-shadow);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.np-feature:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}
.np-theme-cyan .np-feature:hover { border-color: var(--border-glow-cyan); }
.np-theme-amber .np-feature:hover { border-color: var(--border-glow-amber); }
.np-feature-large {
    grid-column: 1 / -1;
    flex-direction: row;
    align-items: center;
    gap: 16px;
}
.np-feature-icon {
    font-size: 1.6rem;
    flex-shrink: 0;
}
.np-feature-body h4 {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 3px;
}
.np-feature-body p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* 套餐区 */
.np-pricing {
    margin-bottom: 40px;
}
.np-pricing-row {
    display: flex;
    gap: 16px;
    margin-bottom: 28px;
}
.np-pricing-row > .pd-pricing-card {
    flex: 1;
    margin: 0;
}
.np-buy-btn {
    display: block;
    width: fit-content;
    margin: 0 auto;
    padding: 16px 56px;
    border: none;
    border-radius: 999px;
    font-size: 1.05rem;
    font-weight: 700;
    color: #fff;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.np-theme-cyan .np-buy-btn {
    background: var(--gradient-cyan);
    box-shadow: 0 6px 20px rgba(0, 152, 199, 0.3);
}
.np-theme-amber .np-buy-btn {
    background: var(--gradient-amber);
    box-shadow: 0 6px 20px rgba(232, 149, 10, 0.3);
}
.np-buy-btn:hover {
    transform: translateY(-2px);
}
.np-theme-cyan .np-buy-btn:hover {
    box-shadow: 0 10px 28px rgba(0, 152, 199, 0.4);
}
.np-theme-amber .np-buy-btn:hover {
    box-shadow: 0 10px 28px rgba(232, 149, 10, 0.4);
}

/* 响应式 - 移动端 */
@media (max-width: 900px) {
    .np-hero {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .np-hero-right {
        order: -1;
        aspect-ratio: 373 / 450;
        max-height: 400px;
    }
    .np-gallery-grid {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto auto;
    }
    .np-gallery-main {
        grid-row: auto;
    }
    .np-capabilities {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .np-strategy-flow {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .np-features-bento {
        grid-template-columns: 1fr 1fr;
    }
    .np-pricing-row {
        flex-direction: column;
    }
    /* 移动端轮播箭头始终显示（无 hover） */
    .np-carousel-arrow {
        opacity: 0.85;
        width: 32px;
        height: 32px;
        font-size: 20px;
    }
    .np-carousel-arrow:hover {
        background: rgba(0, 0, 0, 0.42);
    }
}
@media (max-width: 600px) {
    .np-features-bento {
        grid-template-columns: 1fr;
    }
    .np-feature-large {
        flex-direction: column;
        align-items: flex-start;
    }
}