:root {
        --primary: #7C3AED;
        --primary-light: #EDE9FE;
        --bg: #F9FAFB;
        --text: #111827;
        --text-light: #6B7280;
        --white: #FFFFFF;
        --border: #E5E7EB;
        --radius: 16px;
        --shadow: 0 10px 30px -10px rgba(0,0,0,0.1);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
        background-color: var(--bg);
        color: var(--text);
        line-height: 1.6;
        overflow-x: hidden;
    }
    a { text-decoration: none; color: inherit; }
    img { max-width: 100%; display: block; }
    .container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 20px; }
    
    /* Header */
    header {
        position: fixed; top: 0; left: 0; width: 100%; z-index: 100;
        background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--border);
    }
    .nav-inner {
        display: flex; justify-content: space-between; align-items: center; height: 70px;
    }
    .brand { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: bold; }
    .brand img { height: 32px; }
    .nav-links { display: flex; gap: 24px; font-size: 15px; color: var(--text-light); }
    .nav-links a:hover { color: var(--primary); }
    .nav-right { display: flex; align-items: center; gap: 16px; }
    .btn-download {
        background: var(--primary); color: var(--white); padding: 8px 20px;
        border-radius: 24px; font-weight: bold; transition: opacity 0.2s;
    }
    .btn-download:hover { opacity: 0.9; }

    /* Main Sticky Stack */
    main { padding-top: 70px; }
    .stack-section {
        position: relative;
        background: var(--bg);
        border-radius: 32px 32px 0 0;
        box-shadow: 0 -10px 30px -10px rgba(0,0,0,0.06);
        margin-top: -24px;
        padding: 80px 0;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
        justify-content: center;
        overflow: hidden;
    }
    .stack-section:first-child { margin-top: 0; box-shadow: none; }
    
    /* Decorative Number */
    .deco-num {
        position: absolute; top: 40px; right: 5%; font-size: 180px; font-weight: 900;
        color: transparent; -webkit-text-stroke: 2px var(--border); z-index: 0; pointer-events: none; line-height: 1;
    }

    /* Hero Section */
    .hero-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; position: relative; z-index: 1; }
    h1 { font-size: 56px; font-weight: 900; line-height: 1.1; margin-bottom: 20px; }
    h1 span { color: var(--primary); }
    .hero-hook { font-size: 20px; color: var(--text-light); margin-bottom: 40px; max-width: 80%; }
    .data-row { display: flex; gap: 40px; margin-bottom: 40px; }
    .data-item { display: flex; flex-direction: column; }
    .data-val { font-size: 32px; font-weight: bold; color: var(--primary); }
    .data-label { font-size: 14px; color: var(--text-light); }
    .hero-btns { display: flex; gap: 16px; }
    .btn-large { padding: 14px 32px; border-radius: 30px; font-size: 16px; font-weight: bold; display: flex; align-items: center; gap: 8px; }
    .btn-primary { background: var(--primary); color: var(--white); }
    .btn-outline { border: 2px solid var(--primary); color: var(--primary); background: transparent; }

    /* Card Stack */
    .card-stack-area { position: relative; height: 500px; display: flex; justify-content: center; align-items: center; perspective: 1000px; }
    .card-item {
        position: absolute; width: 240px; height: 360px; border-radius: 16px; overflow: hidden;
        box-shadow: var(--shadow); transition: all 0.3s ease; background: #ccc;
    }
    .card-item img { width: 100%; height: 100%; object-fit: cover; }
    .card-stack-area .card-item:nth-child(1) { transform: translateY(0) scale(1); z-index: 5; }
    .card-stack-area .card-item:nth-child(2) { transform: translateY(20px) scale(0.95); z-index: 4; opacity: 0.8; }
    .card-stack-area .card-item:nth-child(3) { transform: translateY(40px) scale(0.9); z-index: 3; opacity: 0.6; }
    .card-stack-area .card-item:nth-child(4) { transform: translateY(60px) scale(0.85); z-index: 2; opacity: 0.4; }
    .card-stack-area .card-item:nth-child(5) { transform: translateY(80px) scale(0.8); z-index: 1; opacity: 0.2; }

    /* Section Titles */
    h2 { font-size: 40px; font-weight: 800; margin-bottom: 12px; }
    .section-sub { font-size: 16px; color: var(--text-light); margin-bottom: 48px; }

    /* Section 1: Hot */
    .cover-flow-area { position: relative; height: 400px; display: flex; justify-content: center; align-items: center; perspective: 1200px; }
    .cf-item { position: absolute; width: 200px; height: 300px; border-radius: 12px; overflow: hidden; transition: all 0.4s; box-shadow: var(--shadow); }
    .cf-item img { width: 100%; height: 100%; object-fit: cover; }
    .cf-center { transform: translateZ(0) scale(1); z-index: 3; }
    .cf-left { transform: translateX(-150px) translateZ(-100px) rotateY(30deg); z-index: 2; opacity: 0.8; }
    .cf-right { transform: translateX(150px) translateZ(-100px) rotateY(-30deg); z-index: 2; opacity: 0.8; }

    /* Section 2: Calendar */
    .timeline { position: relative; border-left: 2px solid var(--border); margin-left: 20px; padding-left: 30px; }
    .timeline-row { margin-bottom: 40px; position: relative; }
    .timeline-row::before {
        content: ''; position: absolute; left: -37px; top: 6px; width: 12px; height: 12px;
        border-radius: 50%; background: var(--white); border: 2px solid var(--primary);
    }
    .timeline-row.updated::before { background: var(--primary); }
    .time-label { font-weight: bold; font-size: 18px; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
    .time-badge { font-size: 12px; background: var(--primary-light); color: var(--primary); padding: 2px 8px; border-radius: 10px; }
    .show-grid { display: flex; gap: 16px; }
    .show-mini { width: 100px; }
    .show-mini img { width: 100px; height: 140px; object-fit: cover; border-radius: 8px; margin-bottom: 8px; }
    .show-mini h4 { font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
    
    /* Section 3: Ranking */
    .ranking-list { display: flex; flex-direction: column; gap: 20px; }
    .rank-item { display: flex; align-items: center; gap: 20px; background: var(--white); padding: 16px 24px; border-radius: var(--radius); box-shadow: var(--shadow); position: relative; overflow: hidden; }
    .rank-num { font-size: 48px; font-weight: 900; color: transparent; -webkit-text-stroke: 1px var(--border); position: absolute; left: 20px; z-index: 0; }
    .rank-item.top3 .rank-num { color: var(--primary-light); -webkit-text-stroke: 0; }
    .rank-info { position: relative; z-index: 1; margin-left: 60px; display: flex; align-items: center; gap: 16px; width: 100%; }
    .rank-info img { width: 60px; height: 80px; object-fit: cover; border-radius: 8px; }
    .rank-detail h3 { font-size: 18px; margin-bottom: 4px; }
    .rank-tag { font-size: 12px; color: var(--text-light); }
    .rank-heat { margin-left: auto; font-weight: bold; color: #EF4444; display: flex; align-items: center; gap: 4px; }

    /* Section 4: Bento */
    .bento-grid { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 160px; gap: 16px; }
    .bento-item { background: var(--white); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); position: relative; overflow: hidden; display: flex; flex-direction: column; justify-content: space-between; transition: transform 0.2s; }
    .bento-item:hover { transform: scale(1.02); }
    .bento-large { grid-column: span 2; grid-row: span 2; }
    .bento-wide { grid-column: span 2; }
    .bento-tall { grid-row: span 2; }
    .bento-item h3 { font-size: 20px; z-index: 1; }
    .bento-item span { font-size: 14px; color: var(--text-light); z-index: 1; }
    .bento-imgs { display: flex; gap: 8px; margin-top: auto; z-index: 1; }
    .bento-imgs img { width: 40px; height: 56px; object-fit: cover; border-radius: 4px; }

    /* Section 5: Exclusive */
    .exclusive-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
    .ex-card { border: 2px solid var(--primary); border-radius: var(--radius); padding: 30px; display: flex; gap: 24px; background: var(--white); }
    .ex-card img { width: 140px; height: 200px; object-fit: cover; border-radius: 12px; }
    .ex-info h3 { font-size: 24px; margin-bottom: 12px; }
    .ex-info p { color: var(--text-light); font-size: 14px; margin-bottom: 20px; }
    .countdown { display: flex; gap: 10px; margin-bottom: 20px; }
    .cd-box { background: var(--primary-light); color: var(--primary); padding: 8px 12px; border-radius: 8px; font-weight: bold; font-size: 18px; text-align: center; }
    .cd-label { font-size: 12px; text-align: center; color: var(--text-light); margin-top: 4px; }
    .ex-list { display: flex; flex-direction: column; gap: 16px; }
    .ex-row { display: flex; align-items: center; gap: 16px; background: var(--white); padding: 12px; border-radius: 12px; box-shadow: var(--shadow); }
    .ex-row img { width: 48px; height: 64px; object-fit: cover; border-radius: 6px; }
    .ex-row-info h4 { font-size: 16px; margin-bottom: 4px; }
    .ex-row-info span { font-size: 12px; color: var(--text-light); }

    /* Section 6: Free */
    .free-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .free-item { position: relative; }
    .free-item img { width: 100%; aspect-ratio: 3/4; object-fit: cover; border-radius: 12px; margin-bottom: 10px; }
    .free-badge { position: absolute; top: 10px; right: 10px; background: #10B981; color: white; font-size: 12px; font-weight: bold; padding: 4px 8px; border-radius: 4px; }
    .free-title { font-size: 15px; font-weight: bold; margin-bottom: 4px; }
    .free-bar { height: 4px; background: var(--border); border-radius: 2px; overflow: hidden; margin-top: 8px; }
    .free-bar span { display: block; height: 100%; background: #10B981; width: 70%; }

    /* Section 7: Reviews */
    .review-stats { display: flex; gap: 40px; justify-content: center; margin-bottom: 40px; }
    .stat-item { text-align: center; }
    .stat-num { font-size: 48px; font-weight: 900; color: var(--primary); }
    .stat-label { font-size: 14px; color: var(--text-light); }
    .masonry { column-count: 2; column-gap: 24px; }
    .review-card { background: var(--white); padding: 20px; border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 24px; break-inside: avoid; }
    .review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
    .review-header img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; }
    .review-name { font-weight: bold; font-size: 15px; }
    .review-stars { color: #F59E0B; font-size: 14px; margin-top: 2px; }
    .review-text { font-size: 14px; color: var(--text-light); }

    /* Section 8: FAQ */
    .faq-layout { display: grid; grid-template-columns: 1fr 1.5fr; gap: 40px; }
    .faq-list { display: flex; flex-direction: column; gap: 12px; }
    .faq-q { padding: 16px 20px; background: var(--white); border-radius: 12px; cursor: pointer; font-weight: bold; transition: background 0.2s; }
    .faq-q:hover { background: var(--primary-light); color: var(--primary); }
    .faq-a { background: var(--white); padding: 30px; border-radius: var(--radius); box-shadow: var(--shadow); }
    .faq-a h3 { font-size: 20px; margin-bottom: 16px; color: var(--primary); }
    .faq-a p { color: var(--text-light); }

    /* Section 9: Download */
    .steps { display: flex; justify-content: space-between; margin-bottom: 60px; position: relative; }
    .step { text-align: center; flex: 1; position: relative; z-index: 1; }
    .step-icon { width: 60px; height: 60px; background: var(--primary-light); color: var(--primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 24px; font-weight: bold; margin: 0 auto 16px; }
    .step h4 { font-size: 18px; margin-bottom: 8px; }
    .step p { font-size: 13px; color: var(--text-light); max-width: 200px; margin: 0 auto; }
    .dl-area { text-align: center; background: var(--white); padding: 40px; border-radius: var(--radius); box-shadow: var(--shadow); max-width: 600px; margin: 0 auto; }
    .dl-qr { width: 160px; height: 160px; background: var(--border); margin: 0 auto 20px; border-radius: 12px; display: flex; align-items: center; justify-content: center; color: var(--text-light); font-size: 14px; }
    .dl-btns { display: flex; justify-content: center; gap: 20px; }

    /* Footer */
    footer { background: var(--white); padding: 60px 0 30px; border-top: 1px solid var(--border); }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
    .footer-brand p { color: var(--text-light); font-size: 14px; margin-top: 16px; max-width: 300px; }
    .footer-col h4 { font-size: 16px; margin-bottom: 20px; }
    .footer-col a { display: block; color: var(--text-light); font-size: 14px; margin-bottom: 12px; }
    .footer-bottom { text-align: center; color: var(--text-light); font-size: 13px; border-top: 1px solid var(--border); padding-top: 20px; }
    .footer-bottom a { color: var(--text-light); }
    .update-time { margin-top: 10px; font-size: 12px; color: #9CA3AF; }

    /* Responsive */
    @media (max-width: 1024px) {
        .hero-layout, .exclusive-layout, .faq-layout { grid-template-columns: 1fr; }
        .bento-grid { grid-template-columns: repeat(2, 1fr); }
        .free-grid { grid-template-columns: repeat(3, 1fr); }
        .h1 { font-size: 48px; }
        .deco-num { font-size: 140px; }
    }
    @media (max-width: 768px) {
        .nav-links { display: none; }
        .stack-section { padding: 40px 0; min-height: auto; border-radius: 20px 20px 0 0; }
        .deco-num { font-size: 100px; right: 20px; top: 20px; }
        h1 { font-size: 36px; }
        h2 { font-size: 28px; }
        .card-stack-area { height: 300px; }
        .card-item { width: 160px; height: 240px; }
        .cover-flow-area { display: flex; overflow-x: auto; height: auto; padding-bottom: 20px; justify-content: flex-start; gap: 16px; }
        .cf-item { position: static; transform: none !important; flex-shrink: 0; width: 140px; height: 200px; opacity: 1 !important; }
        .free-grid { grid-template-columns: repeat(2, 1fr); }
        .masonry { column-count: 1; }
        .footer-grid { grid-template-columns: 1fr 1fr; }
        .steps { flex-direction: column; gap: 30px; }
        .dl-btns { flex-direction: column; }
        .btn-large { justify-content: center; }
    }