:root {
    --bg: #fcf9f2;
    --bg-alt: #f4ebd9;
    --ink: #2b2118;
    --ink-2: #6e6459;
    --brand: #d98800;
    --brand-soft: #fdf2da;
    --line: #e6ded2;
    --radius: 18px;
    --spacing: 104px;
    --max-width: 1180px;
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg);
    color: var(--ink);
    line-height: 1.85;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
  }
  a { text-decoration: none; color: inherit; }
  img { max-width: 100%; display: block; object-fit: cover; }
  .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
  
  /* 01 适龄提示 */
  .age-bar {
    background-color: var(--ink);
    color: rgba(255, 255, 255, 0.8);
    font-size: 13px;
    text-align: center;
    height: 36px;
    line-height: 36px;
    width: 100%;
  }

  /* 02 导航 */
  header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(252, 249, 242, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
  }
  .nav-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
  }
  .nav-brand { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 18px; }
  .nav-brand img { height: 32px; width: auto; }
  .nav-links { display: flex; gap: 32px; font-size: 14px; font-weight: 500; color: var(--ink-2); }
  .nav-links a:hover { color: var(--brand); }
  .btn-solid {
    background-color: var(--brand);
    color: #fff;
    padding: 10px 24px;
    border-radius: 99px;
    font-weight: 600;
    font-size: 14px;
    display: inline-block;
    transition: transform 0.2s, background-color 0.2s;
  }
  .btn-solid:hover { transform: scale(1.02); }
  .btn-outline {
    border: 1px solid var(--line);
    color: var(--ink);
    padding: 10px 24px;
    border-radius: 99px;
    font-weight: 600;
    font-size: 14px;
    display: inline-block;
    transition: border-color 0.2s;
  }
  .btn-outline:hover { border-color: var(--brand); color: var(--brand); }

  /* 通用板块标题区 */
  .section-header { margin-bottom: 40px; }
  .kicker {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--ink-2);
    font-weight: 600;
  }
  .section-title {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.3;
    margin-top: 12px;
  }
  .section-desc {
    font-size: 16px;
    font-weight: 500;
    color: var(--ink-2);
    max-width: 620px;
    margin-top: 10px;
  }

  section { padding: var(--spacing) 0; }

  /* 03 首屏 */
  .hero { padding-top: calc(var(--spacing) - 40px); }
  .hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 60px;
    align-items: center;
  }
  .hero-eyebrow {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--brand);
    font-weight: 700;
    margin-bottom: 16px;
  }
  .hero h1 {
    font-size: clamp(40px, 6vw, 64px);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: 20px;
  }
  .hero-claim {
    font-size: 20px;
    font-weight: 500;
    color: var(--ink-2);
    font-style: italic;
    margin-bottom: 20px;
  }
  .hero-desc { margin-bottom: 32px; color: var(--ink-2); }
  .hero-actions { display: flex; gap: 16px; margin-bottom: 32px; }
  .pills-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 40px;
  }
  .pill {
    border: 1px solid var(--line);
    border-radius: 99px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 500;
    text-align: center;
  }
  .scenario-list { display: flex; flex-direction: column; gap: 20px; }
  .scenario-item strong { font-weight: 700; margin-right: 8px; font-size: 16px; }
  .scenario-item span { color: var(--ink-2); }

  .collage {
    position: relative;
    aspect-ratio: 4/5;
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
  }
  .collage img {
    border-radius: 12px;
    border: 1px solid #fff;
    box-shadow: 0 18px 40px rgba(0,0,0,.16);
    object-fit: cover;
  }
  .collage .main {
    width: 62%;
    height: 100%;
    position: absolute;
    top: 0; left: 19%;
    z-index: 2;
  }
  .collage .sub-a {
    width: 34%;
    aspect-ratio: 3/4;
    position: absolute;
    top: -6%; left: 0;
    z-index: 1;
    transform: rotate(-4deg);
  }
  .collage .sub-b {
    width: 34%;
    aspect-ratio: 3/4;
    position: absolute;
    bottom: -6%; right: 0;
    z-index: 3;
    transform: rotate(4deg);
  }
  .hero-footnote {
    font-size: 13px;
    color: var(--ink-2);
    margin-top: 60px;
    text-align: center;
  }

  /* 04 三入口 */
  .entry-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
  .entry-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 24px;
    display: flex;
    flex-direction: column;
    transition: border-color 0.2s;
  }
  .entry-card:hover { border-color: var(--brand); }
  .entry-icon { margin-bottom: 16px; color: var(--brand); }
  .entry-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 12px; }
  .entry-card p { color: var(--ink-2); margin-bottom: 24px; flex-grow: 1; }
  .text-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--brand);
    display: inline-flex;
    align-items: center;
  }
  .text-link span { transition: transform 0.2s; margin-left: 4px; }
  .entry-card:hover .text-link span { transform: translateX(4px); }

  /* 05 为什么选我们 */
  .why-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  .why-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 24px;
  }
  .why-icon { margin-bottom: 16px; color: var(--brand); }
  .why-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 12px; }
  .why-card p { color: var(--ink-2); margin-bottom: 12px; }
  .why-card .meta { font-size: 13px; color: var(--ink-2); }

  /* 06 热播 */
  .hot-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 24px;
  }
  .hot-card { display: flex; flex-direction: column; }
  .hot-cover-wrap { position: relative; aspect-ratio: 3/4; border-radius: 12px; overflow: hidden; margin-bottom: 16px; }
  .hot-cover-wrap img { width: 100%; height: 100%; transition: transform 0.3s; }
  .hot-card:hover .hot-cover-wrap img { transform: scale(1.03); }
  .status-badge {
    position: absolute;
    top: 12px; left: 12px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    font-size: 11px;
    padding: 4px 8px;
    border-radius: 4px;
    font-weight: 500;
  }
  .hot-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
  .hot-genre { font-size: 13px; color: var(--ink-2); }
  .tag-pill {
    display: inline-block;
    border: 1px solid var(--line);
    border-radius: 99px;
    padding: 4px 10px;
    font-size: 12px;
    color: var(--ink-2);
    margin-top: 8px;
    align-self: flex-start;
  }
  .hot-footer { text-align: right; }

  /* 07 排行榜 */
  .rank-list { border-top: 1px solid var(--line); }
  .rank-item {
    display: flex;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
    min-height: 88px;
  }
  .rank-num {
    font-size: 24px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    width: 48px;
    color: var(--ink-2);
  }
  .rank-num.top { color: var(--brand); }
  .rank-cover {
    width: 56px;
    height: 75px;
    border-radius: 8px;
    margin-right: 20px;
    flex-shrink: 0;
  }
  .rank-info { flex-grow: 1; }
  .rank-info h3 { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
  .rank-info p { font-size: 13px; color: var(--ink-2); }
  .rank-tags { display: flex; gap: 8px; }
  .rank-tag {
    border: 1px solid var(--line);
    border-radius: 99px;
    padding: 2px 8px;
    font-size: 12px;
    color: var(--ink-2);
  }

  /* 08 精选片单 */
  .collection-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
  .collection-card { display: block; }
  .collection-img { aspect-ratio: 3/4; border-radius: 12px; margin-bottom: 16px; width: 100%; }
  .topic-tag { font-size: 12px; text-transform: uppercase; color: var(--brand); font-weight: 700; margin-bottom: 4px; display: block; }
  .collection-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
  .collection-card p { font-size: 14px; color: var(--ink-2); margin-bottom: 12px; }
  .suit-for { font-size: 13px; color: var(--ink-2); }

  /* 09 制作流程 */
  .process-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
  }
  .process-left p { color: var(--ink-2); margin-bottom: 24px; max-width: 80%; }
  .process-list { display: flex; flex-direction: column; gap: 24px; }
  .process-item { display: flex; gap: 20px; }
  .process-num {
    font-size: 28px;
    font-weight: 700;
    color: transparent;
    -webkit-text-stroke: 1px var(--brand);
    line-height: 1;
    flex-shrink: 0;
  }
  .process-item h3 { font-size: 17px; font-weight: 600; margin-bottom: 4px; }
  .process-item p { font-size: 14px; color: var(--ink-2); }

  /* 10 创作者/合作 */
  .creator-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
  }
  .creator-left h2 { font-size: 28px; font-weight: 700; margin-bottom: 16px; }
  .creator-left p { color: var(--ink-2); margin-bottom: 16px; }
  .creator-actions { display: flex; gap: 16px; margin-top: 32px; }
  .creator-right {
    background: var(--bg-alt);
    border-radius: var(--radius);
    padding: 28px;
  }
  .check-list { display: flex; flex-direction: column; gap: 16px; }
  .check-item { display: flex; align-items: center; gap: 12px; font-size: 15px; }
  .check-icon { color: var(--brand); flex-shrink: 0; }

  /* 11 下载 */
  .download-block {
    background: var(--bg-alt);
    padding: 60px;
    border-radius: var(--radius);
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 60px;
    align-items: center;
  }
  .download-left h2 { font-size: 32px; font-weight: 700; margin-bottom: 24px; }
  .download-left .check-list { margin-bottom: 32px; }
  .download-left .btn-solid { margin-bottom: 16px; }
  .age-hint { font-size: 13px; color: var(--ink-2); }
  .qr-card {
    width: 160px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 12px;
    text-align: center;
  }
  .qr-card img { width: 100%; aspect-ratio: 1; border-radius: 8px; margin-bottom: 8px; }
  .qr-card p { font-size: 12px; color: var(--ink-2); }

  /* 12 FAQ */
  .faq-list { border-top: 1px solid var(--line); }
  .faq-item { border-bottom: 1px solid var(--line); }
  .faq-item summary {
    display: flex;
    align-items: center;
    padding: 24px 0;
    cursor: pointer;
    list-style: none;
  }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-num { font-size: 13px; color: var(--ink-2); width: 40px; flex-shrink: 0; }
  .faq-q { font-size: 17px; font-weight: 600; flex-grow: 1; }
  .faq-icon { font-size: 20px; color: var(--ink-2); transition: transform 0.3s; }
  .faq-item[open] .faq-icon { transform: rotate(45deg); }
  .faq-a { padding: 0 0 24px 40px; color: var(--ink-2); font-size: 15px; line-height: 1.8; }

  /* 13 页脚 */
  footer {
    padding: 60px 0 calc(60px + env(safe-area-inset-bottom));
    background: var(--bg);
    border-top: 1px solid var(--line);
  }
  .footer-grid {
    display: flex;
    justify-content: space-between;
    margin-bottom: 60px;
  }
  .footer-brand img { height: 36px; margin-bottom: 16px; }
  .footer-brand h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
  .footer-brand p { color: var(--ink-2); font-size: 14px; margin-bottom: 16px; max-width: 300px; }
  .footer-age { font-size: 13px; color: var(--ink-2); }
  .footer-links { display: flex; gap: 60px; }
  .link-col h4 { font-size: 14px; font-weight: 600; margin-bottom: 16px; color: var(--ink); }
  .link-col ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
  .link-col a { font-size: 14px; color: var(--ink-2); }
  .link-col a:hover { color: var(--brand); }
  .footer-bottom {
    border-top: 1px solid var(--line);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: var(--ink-2);
  }

  /* 吸底条 */
  .sticky-cta {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: rgba(252, 249, 242, 0.95);
    backdrop-filter: blur(8px);
    border-top: 1px solid var(--line);
    padding: 12px 24px calc(12px + env(safe-area-inset-bottom));
    display: none;
    z-index: 100;
    transition: opacity 0.3s, transform 0.3s;
  }

  /* 响应式 */
  @media (max-width: 1024px) {
    .hero-grid { gap: 40px; }
    .process-grid, .creator-grid { gap: 40px; }
    .collection-grid { grid-template-columns: repeat(2, 1fr); }
  }

  @media (max-width: 767px) {
    :root { --spacing: 56px; --radius: 16px; }
    
    .nav-links { display: none; }
    .nav-inner { height: 60px; }
    
    .hero-grid { grid-template-columns: 1fr; }
    .collage { aspect-ratio: 3/4; max-width: 320px; }
    .collage .sub-a, .collage .sub-b { display: none; }
    .collage .main { width: 100%; left: 0; }
    .hero-footnote { margin-top: 32px; }
    
    .entry-grid { grid-template-columns: 1fr; }
    .why-grid { grid-template-columns: 1fr; }
    
    .hot-grid { grid-template-columns: repeat(2, 1fr); }
    
    .rank-item { flex-wrap: wrap; }
    .rank-tags { width: 100%; margin-top: 12px; margin-left: 124px; }
    
    .collection-grid {
      display: flex;
      overflow-x: auto;
      scroll-snap-type: x mandatory;
      gap: 16px;
      padding-bottom: 16px;
      margin-right: -24px;
      padding-right: 24px;
    }
    .collection-card {
      flex: 0 0 62vw;
      scroll-snap-align: start;
    }
    
    .process-grid, .creator-grid { grid-template-columns: 1fr; }
    
    .download-block {
      grid-template-columns: 1fr;
      padding: 32px;
      gap: 32px;
    }
    .qr-card { margin: 0 auto; }
    
    .footer-grid { flex-direction: column; gap: 40px; }
    .footer-links { flex-wrap: wrap; gap: 40px; }
    .footer-bottom { flex-direction: column; gap: 12px; align-items: flex-start; }
    
    .sticky-cta { display: flex; justify-content: center; }
    footer { padding-bottom: calc(100px + env(safe-area-inset-bottom)); }
    
    .section-title { font-size: 26px; }
    .creator-left h2, .download-left h2 { font-size: 24px; }
    .faq-a { padding-left: 0; padding-top: 16px; }
  }