:root {
    --bg-base: #12100E;
    --accent-main: #FF8A3D;
    --accent-gold: #FFC65C;
    --text-main: #F7F1E8;
    --text-sec: #C4B6A6;
    --text-weak: #8A7C6D;
    --border-color: rgba(255, 198, 92, .18);
    --font-sans: -apple-system, "PingFang SC", "Noto Sans SC", sans-serif;
    --font-mono: ui-monospace, "SF Mono", Consolas, monospace;
    --radius: 12px;
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }
  body {
    background-color: var(--bg-base);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
  }
  img { max-width: 100%; height: auto; display: block; object-fit: cover; }
  a { color: inherit; text-decoration: none; }
  button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
  ul { list-style: none; }

  /* 动画基础类 */
  .reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s cubic-bezier(.2,.8,.2,1), transform .6s cubic-bezier(.2,.8,.2,1); }
  .reveal.active { opacity: 1; transform: translateY(0); }

  /* 导航 */
  .navbar {
    position: fixed; top: 20px; left: 50%; transform: translateX(-50%);
    width: calc(100% - 40px); max-width: 1100px;
    background: rgba(18, 16, 14, 0.7);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    display: flex; justify-content: space-between; align-items: center;
    padding: 10px 24px; z-index: 1000; transition: all .3s ease;
  }
  .navbar.scrolled { top: 10px; padding: 6px 20px; background: rgba(18, 16, 14, 0.9); }
  .nav-brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1.1rem; }
  .nav-links { display: flex; gap: 20px; font-size: 0.9rem; color: var(--text-sec); }
  .nav-links a:hover, .nav-links a.active { color: var(--accent-gold); }
  .nav-btn { background: var(--accent-main); color: #12100E; padding: 8px 18px; border-radius: 20px; font-weight: 700; font-size: 0.9rem; transition: background .3s; }
  .nav-btn:hover { background: var(--accent-gold); }
  .hamburger { display: none; flex-direction: column; gap: 4px; }
  .hamburger span { width: 20px; height: 2px; background: var(--text-main); }

  /* 首屏 */
  .hero { padding: 140px 20px 80px; max-width: 1200px; margin: 0 auto; display: flex; align-items: center; gap: 60px; position: relative; }
  .hero::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at 20% 30%, rgba(255,138,61,0.08) 0%, transparent 50%); z-index: -1; }
  .hero-content { flex: 1; }
  .hero h1 { font-size: 3rem; line-height: 1.2; margin-bottom: 20px; background: linear-gradient(90deg, #FFF, var(--accent-gold)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
  .slogan { font-size: 1.5rem; color: var(--accent-main); margin-bottom: 16px; font-weight: 600; }
  .desc { color: var(--text-sec); font-size: 1.1rem; margin-bottom: 30px; }
  .trust-points { display: flex; flex-direction: column; gap: 12px; margin-bottom: 30px; }
  .trust-item { display: flex; align-items: center; gap: 8px; color: var(--text-sec); font-size: 0.95rem; }
  .trust-item svg { width: 18px; height: 18px; fill: var(--accent-gold); flex-shrink: 0; }
  .trust-bar { display: flex; gap: 24px; border-top: 1px solid var(--border-color); padding-top: 20px; margin-bottom: 30px; }
  .trust-stat { display: flex; flex-direction: column; }
  .trust-stat strong { font-family: var(--font-mono); font-size: 1.4rem; color: var(--accent-gold); }
  .trust-stat span { font-size: 0.85rem; color: var(--text-weak); }
  .hero-btns { display: flex; gap: 16px; }
  .btn-primary, .btn-secondary { padding: 12px 28px; border-radius: 24px; font-weight: 600; font-size: 1rem; transition: all .2s; text-align: center; }
  .btn-primary { background: var(--accent-main); color: #12100E; }
  .btn-primary:hover { transform: scale(1.02); background: var(--accent-gold); }
  .btn-secondary { border: 1px solid var(--border-color); color: var(--text-main); }
  .btn-secondary:hover { background: rgba(255,138,61,0.1); }

  /* 手机样机 */
  .hero-visual { flex: 1; position: relative; display: flex; justify-content: center; }
  .phone-mock { width: 280px; height: 580px; background: #000; border-radius: 36px; border: 8px solid #2A2622; position: relative; overflow: hidden; box-shadow: 0 20px 50px rgba(0,0,0,0.5); }
  .phone-screen { width: 100%; height: 100%; position: relative; background: #1A1815; }
  .phone-screen img { width: 100%; height: 100%; object-fit: cover; }
  .play-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 40%); display: flex; flex-direction: column; justify-content: flex-end; padding: 20px; }
  .play-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
  .play-tags { display: flex; gap: 6px; }
  .play-tag { background: rgba(255,255,255,0.2); backdrop-filter: blur(4px); padding: 2px 8px; border-radius: 4px; font-size: 0.75rem; }
  .play-tag.active { background: var(--accent-main); color: #12100E; font-weight: bold; cursor: pointer; }
  .collage-bg { position: absolute; inset: -20px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; opacity: 0.3; z-index: -1; filter: blur(4px); }
  .collage-bg img { border-radius: 8px; aspect-ratio: 3/4; }

  /* 榜单区块 */
  .section-pad { padding: 80px 20px; max-width: 1200px; margin: 0 auto; }
  .section-header { margin-bottom: 40px; }
  .section-header h2 { font-size: 2rem; margin-bottom: 10px; }
  .split-container { display: flex; gap: 40px; }
  .rank-list-wrapper { flex: 1; }
  .rank-tabs { display: flex; gap: 20px; margin-bottom: 20px; border-bottom: 1px solid var(--border-color); padding-bottom: 10px; }
  .rank-tab { font-size: 1.1rem; color: var(--text-weak); font-weight: 600; padding-bottom: 10px; border-bottom: 2px solid transparent; }
  .rank-tab.active { color: var(--accent-gold); border-color: var(--accent-gold); }
  .rank-list { display: flex; flex-direction: column; gap: 16px; }
  .rank-item { display: flex; align-items: center; gap: 16px; padding: 12px; border-radius: var(--radius); background: rgba(255,255,255,0.03); transition: background .2s; cursor: pointer; }
  .rank-item:hover { background: rgba(255,255,255,0.06); }
  .rank-num { font-family: var(--font-mono); font-size: 1.8rem; font-weight: 700; color: var(--text-weak); width: 30px; text-align: center; }
  .rank-item:nth-child(1) .rank-num, .rank-item:nth-child(2) .rank-num, .rank-item:nth-child(3) .rank-num { color: var(--accent-main); }
  .rank-cover { width: 60px; aspect-ratio: 3/4; border-radius: 6px; overflow: hidden; flex-shrink: 0; }
  .rank-info { flex: 1; min-width: 0; }
  .rank-title { font-size: 1rem; font-weight: 600; margin-bottom: 4px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.4; }
  .rank-meta { font-size: 0.8rem; color: var(--text-weak); display: flex; gap: 12px; }
  .rank-meta span { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
  
  .preview-area { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; }
  .preview-phone { width: 260px; height: 460px; border-radius: 24px; overflow: hidden; border: 4px solid #2A2622; position: relative; }
  .preview-phone img { width: 100%; height: 100%; object-fit: cover; }
  .preview-text { margin-top: 16px; color: var(--text-sec); font-size: 0.9rem; text-align: center; }

  /* 情绪分栏 */
  .mood-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .mood-card { background: rgba(255,255,255,0.03); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 20px; cursor: pointer; position: relative; overflow: hidden; }
  .mood-card:hover { border-color: var(--accent-main); }
  .mood-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; color: var(--accent-gold); }
  .mood-count { font-size: 0.85rem; color: var(--text-weak); }
  .mood-extra { margin-top: 16px; display: none; gap: 8px; grid-template-columns: repeat(4, 1fr); }
  .mood-card.expanded .mood-extra { display: grid; }
  .mood-thumb { aspect-ratio: 3/4; border-radius: 4px; overflow: hidden; }
  .mood-more { grid-column: span 4; text-align: center; font-size: 0.85rem; color: var(--accent-main); margin-top: 8px; }

  /* 播放器体验 */
  .player-features { display: flex; gap: 40px; align-items: center; }
  .feature-list { flex: 1; display: flex; flex-direction: column; gap: 16px; }
  .feature-item { display: flex; gap: 16px; padding: 16px; border-radius: var(--radius); background: rgba(255,255,255,0.02); cursor: pointer; border: 1px solid transparent; transition: all .2s; }
  .feature-item.active { background: rgba(255,138,61,0.1); border-color: var(--accent-main); }
  .feature-icon { width: 24px; height: 24px; flex-shrink: 0; fill: var(--accent-gold); }
  .feature-text h3 { font-size: 1.1rem; margin-bottom: 4px; }
  .feature-text p { font-size: 0.9rem; color: var(--text-sec); }

  /* 主演 */
  .actor-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
  .actor-card { perspective: 1000px; aspect-ratio: 3/4; cursor: pointer; }
  .actor-inner { position: relative; width: 100%; height: 100%; transition: transform 0.6s cubic-bezier(.2,.8,.2,1); transform-style: preserve-3d; }
  .actor-card:hover .actor-inner, .actor-card.flipped .actor-inner { transform: rotateY(180deg); }
  .actor-front, .actor-back { position: absolute; inset: 0; backface-visibility: hidden; border-radius: var(--radius); overflow: hidden; }
  .actor-front img { width: 100%; height: 100%; object-fit: cover; }
  .actor-front-info { position: absolute; bottom: 0; left: 0; right: 0; background: linear-gradient(to top, rgba(0,0,0,0.9), transparent); padding: 16px; }
  .actor-name { font-size: 1.1rem; font-weight: 700; }
  .actor-role { font-size: 0.8rem; color: var(--accent-gold); }
  .actor-back { background: #2A241E; transform: rotateY(180deg); padding: 20px; display: flex; flex-direction: column; justify-content: center; }
  .actor-bio { font-size: 0.85rem; color: var(--text-sec); line-height: 1.6; margin-bottom: 16px; }
  .actor-btn { display: inline-block; text-align: center; padding: 8px; border: 1px solid var(--accent-main); color: var(--accent-main); border-radius: 4px; font-size: 0.85rem; }

  /* 追更展示 */
  .shelf-wrap { background: rgba(255,255,255,0.02); border-radius: var(--radius); padding: 40px; border: 1px solid var(--border-color); }
  .shelf-row { display: flex; gap: 20px; overflow-x: auto; padding-bottom: 20px; scrollbar-width: none; }
  .shelf-row::-webkit-scrollbar { display: none; }
  .shelf-item { width: 120px; flex-shrink: 0; }
  .shelf-item img { border-radius: 8px; aspect-ratio: 3/4; margin-bottom: 8px; }
  .shelf-title { font-size: 0.9rem; font-weight: 600; margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .shelf-progress-text { font-size: 0.75rem; color: var(--text-weak); margin-bottom: 4px; font-family: var(--font-mono); }
  .shelf-bar { height: 4px; background: rgba(255,255,255,0.1); border-radius: 2px; overflow: hidden; }
  .shelf-bar div { height: 100%; background: var(--accent-main); }

  /* 品牌故事 */
  .story-layout { display: flex; gap: 40px; }
  .story-content { flex: 7; }
  .story-content h3 { font-size: 1.3rem; margin-bottom: 16px; color: var(--accent-gold); }
  .story-content p { color: var(--text-sec); line-height: 1.9; margin-bottom: 24px; font-size: 0.95rem; }
  .story-stats { flex: 5; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .stat-block { background: rgba(255,255,255,0.03); border-radius: var(--radius); padding: 20px; text-align: center; }
  .stat-num { font-family: var(--font-mono); font-size: 1.8rem; font-weight: 700; color: var(--accent-main); margin-bottom: 4px; }
  .stat-label { font-size: 0.85rem; color: var(--text-weak); }
  .reviews-bar { margin-top: 40px; display: flex; gap: 20px; }
  .review-card { flex: 1; background: rgba(255,255,255,0.03); padding: 20px; border-radius: var(--radius); }
  .review-stars { color: var(--accent-gold); font-size: 1rem; margin-bottom: 8px; }
  .review-text { font-size: 0.9rem; color: var(--text-sec); margin-bottom: 12px; line-height: 1.6; }
  .review-meta { font-size: 0.8rem; color: var(--text-weak); display: flex; justify-content: space-between; }

  /* 多端下载 */
  .download-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 40px; }
  .dl-btn { display: flex; align-items: center; gap: 12px; background: rgba(255,255,255,0.04); padding: 16px; border-radius: var(--radius); border: 1px solid var(--border-color); transition: background .2s; }
  .dl-btn:hover { background: rgba(255,255,255,0.08); }
  .dl-icon { width: 32px; height: 32px; fill: var(--text-main); flex-shrink: 0; }
  .dl-text h4 { font-size: 0.95rem; margin-bottom: 2px; }
  .dl-text p { font-size: 0.75rem; color: var(--text-weak); font-family: var(--font-mono); }
  
  .install-tips { display: flex; gap: 20px; margin-bottom: 30px; }
  .install-tip { flex: 1; background: rgba(255,138,61,0.05); padding: 16px; border-radius: var(--radius); border: 1px solid rgba(255,138,61,0.2); }
  .install-tip strong { display: block; color: var(--accent-main); margin-bottom: 4px; font-size: 0.9rem; }
  .install-tip span { font-size: 0.85rem; color: var(--text-sec); }

  .faq-item { margin-bottom: 12px; border-bottom: 1px solid var(--border-color); }
  .faq-q { width: 100%; text-align: left; padding: 16px 0; font-size: 1rem; font-weight: 600; display: flex; justify-content: space-between; align-items: center; }
  .faq-q::after { content: '+'; color: var(--accent-main); font-size: 1.2rem; transition: transform .3s; }
  .faq-item.open .faq-q::after { transform: rotate(45deg); }
  .faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
  .faq-a p { padding-bottom: 16px; color: var(--text-sec); font-size: 0.9rem; line-height: 1.6; }

  /* 页脚 */
  footer { border-top: 1px solid var(--border-color); padding: 60px 20px 20px; background: rgba(0,0,0,0.3); }
  .footer-grid { max-width: 1200px; margin: 0 auto 40px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
  .footer-col h4 { font-size: 1rem; margin-bottom: 16px; color: var(--text-main); }
  .footer-col ul { display: flex; flex-direction: column; gap: 10px; }
  .footer-col a, .footer-col p { color: var(--text-weak); font-size: 0.85rem; }
  .footer-col a:hover { color: var(--accent-main); }
  .footer-bottom { max-width: 1200px; margin: 0 auto; border-top: 1px solid rgba(255,255,255,0.05); padding-top: 20px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; color: var(--text-weak); font-size: 0.75rem; }
  .footer-bottom a { color: var(--text-weak); }

  /* 响应式 */
  @media (max-width: 1200px) {
    .hero h1 { font-size: 2.5rem; }
    .mood-grid { grid-template-columns: repeat(2, 1fr); }
    .actor-grid { grid-template-columns: repeat(3, 1fr); }
    .download-grid { grid-template-columns: repeat(3, 1fr); }
  }
  @media (max-width: 992px) {
    .hero { flex-direction: column; padding-top: 120px; text-align: center; }
    .hero-content { display: flex; flex-direction: column; align-items: center; }
    .trust-points { align-items: flex-start; text-align: left; }
    .split-container { flex-direction: column; }
    .preview-area { order: -1; margin-bottom: 20px; }
    .player-features { flex-direction: column; }
    .story-layout { flex-direction: column; }
    .story-stats { grid-template-columns: repeat(3, 1fr); }
    .reviews-bar { flex-wrap: wrap; }
    .review-card { min-width: 45%; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 768px) {
    .nav-links, .nav-btn { display: none; }
    .hamburger { display: flex; }
    .hero h1 { font-size: 2rem; }
    .mood-grid { grid-template-columns: 1fr; }
    .actor-grid { grid-template-columns: repeat(2, 1fr); }
    .download-grid { grid-template-columns: repeat(2, 1fr); }
    .install-tips { flex-direction: column; }
    .story-stats { grid-template-columns: repeat(2, 1fr); }
    .review-card { min-width: 100%; }
  }
  @media (max-width: 480px) {
    .hero h1 { font-size: 1.8rem; }
    .hero-btns { flex-direction: column; width: 100%; }
    .phone-mock { width: 240px; height: 500px; }
    .footer-grid { grid-template-columns: 1fr; }
  }

  @media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
    .reveal { opacity: 1; transform: none; }
  }