/* ============================================
   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;
}

.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);
}

.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: 32px;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
    position: relative;
    padding: 4px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-cyan);
    transition: var(--transition);
    border-radius: 1px;
}

.nav-link:hover, .nav-link.active {
    color: #22d3ee;
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.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);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.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-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: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;
}

.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);
}

/* 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) + 40px);
    min-height: 100vh;
    max-width: 1100px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
    padding-bottom: 80px;
}

.purchase-layout {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.purchase-layout-left {
    flex: 1;
    min-width: 0;
}

.purchase-layout-right {
    width: 360px;
    flex-shrink: 0;
    position: sticky;
    top: calc(var(--nav-height) + 24px);
}

@media (max-width: 900px) {
    .purchase-layout {
        flex-direction: column;
    }
    .purchase-layout-left {
        width: 100%;
        flex: none;
    }
    .purchase-layout-right {
        width: 100%;
        position: static;
    }
    .purchase-page {
        max-width: 700px;
    }
}

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

.purchase-section:hover {
    border-color: rgba(255, 255, 255, 0.1);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.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;
}

.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;
}

.coupon-input {
    flex: 1;
}

.btn-coupon-verify {
    flex-shrink: 0;
    padding: 8px 16px;
    font-size: 0.8rem;
    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;
}

.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;
}

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

.coupon-invalid {
    color: #ef4444;
}

.order-summary-section {
    border-color: var(--accent-cyan);
    background: rgba(0, 212, 255, 0.05);
}

.order-summary {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.purchase-pay-btn {
    width: 100%;
    margin-top: 20px;
}

.order-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    margin-bottom: 16px;
    transition: var(--transition);
}

.order-card:hover {
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.order-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border-color);
}

.order-card-sn {
    font-family: monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.order-card-status {
    font-weight: 600;
    font-size: 0.9rem;
}

.order-card-body {
    padding: 16px;
}

.order-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.order-row.total {
    border-bottom: none;
    padding-top: 12px;
    border-top: 2px solid rgba(0, 212, 255, 0.2);
    margin-top: 4px;
}

.order-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.order-value {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
}

.order-row.total .order-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.order-row.total .order-value {
    color: var(--accent-cyan);
    font-size: 1.3rem;
    font-weight: 700;
    font-family: var(--font-heading);
}

@media (max-width: 768px) {
    .duration-select-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .duration-select-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   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;
}

@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 {
    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;
    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);
}

.product-select-card .name {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.product-select-card .sub {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ============================================
   Duration Select
   ============================================ */
.duration-select-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.duration-select-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;
    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);
}

.duration-select-card .dur-name {
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.duration-select-card .dur-price {
    font-family: var(--font-heading);
    font-size: 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: 40px;
    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: 20px;
}

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

.form-input {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-card);
    border: 1px 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);
}

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

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

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

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

.product-select-card .name {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.product-select-card .sub {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Duration Select */
.duration-select-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.duration-select-card {
    padding: 14px 8px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

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

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

.duration-select-card .dur-name {
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.duration-select-card .dur-price {
    font-family: var(--font-heading);
    font-size: 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: var(--transition);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

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

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

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

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

/* Order Summary */
.order-summary {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 24px;
}

.order-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

.order-row:last-child {
    border-bottom: none;
    padding-top: 16px;
    margin-top: 8px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.order-row.total .order-label,
.order-row.total .order-value {
    font-weight: 700;
    font-size: 1.1rem;
}

.order-row.total .order-value {
    color: var(--accent-cyan);
    font-family: var(--font-heading);
}

.order-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.order-value {
    font-size: 0.9rem;
    font-weight: 500;
}

/* 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(--accent-cyan);
    word-break: break-all;
    user-select: all;
}

.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(251, 191, 36, 0.15), rgba(245, 158, 11, 0.15));
    border: 1px solid rgba(251, 191, 36, 0.4);
    border-radius: 8px;
    color: #fbbf24;
    font-size: 1rem;
    font-weight: 600;
}

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

.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;
}

.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;
}

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

.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;
}

.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;
}

.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) {
    .nav-links, .nav-cta {
        display: none;
    }

    .nav-mobile-toggle {
        display: flex;
    }

    .mobile-menu {
        display: block;
    }

    .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;
    }
}

/* ===== 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;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    padding: 20px;
}

.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);
}

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

.modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 44px;
    height: 44px;
    border: none;
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-size: 28px;
    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);
}

.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: 12px;
    justify-content: center;
    margin-top: 8px;
}

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

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

@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: 10px;
        word-break: break-all;
    }
    .download-link-row {
        flex-wrap: wrap;
        gap: 6px;
    }
    .download-link-row .download-label {
        width: 100%;
    }
    .tutorial-page {
        padding: 20px 12px;
    }
    .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-layout {
        gap: 16px;
    }
    .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;
}

.qty-btn {
    width: 44px;
    height: 44px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.qty-btn:first-child {
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.qty-btn:last-child {
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

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

.qty-input {
    width: 60px;
    height: 44px;
    border: 1px solid var(--border-color);
    border-left: none;
    border-right: none;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    font-family: var(--font-heading);
}

.qty-input:focus {
    outline: none;
}

/* ===== 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;
    }
}