:root {
    --bg: #fbfbfa;
    --bg-soft: #f3f3f1;
    --ink: #161616;
    --ink-soft: #5a5a56;
    --line: #e7e7e3;
    --warm: #b9854f;
    --warm-soft: #f4ece2;
    --radius-lg: 28px;
    --radius-md: 18px;
    --shadow-soft: 0 14px 40px rgba(20, 20, 18, 0.06);
  }
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }
  img { display: block; max-width: 100%; }
  a { color: inherit; text-decoration: none; }
  ul, ol { margin: 0; padding: 0; list-style: none; }
  h1, h2, h3, h4, p { margin: 0; }
  .wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 24px; }

  /* ---------- header ---------- */
  .site-header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(251, 251, 250, 0.88);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
  }
  .header-inner {
    display: flex; align-items: center; gap: 20px;
    height: 68px;
  }
  .brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
  .brand img { height: 32px; width: auto; border-radius: 8px; }
  .brand span { font-weight: 800; font-size: 1.05rem; letter-spacing: 0.02em; }
  .main-nav { flex: 1; display: flex; justify-content: center; }
  .main-nav ul { display: flex; flex-wrap: wrap; gap: 4px; }
  .main-nav a {
    display: block; padding: 6px 11px; border-radius: 999px;
    font-size: 0.88rem; color: var(--ink-soft);
    transition: background 0.25s, color 0.25s;
  }
  .main-nav a:hover { background: var(--bg-soft); color: var(--ink); }
  .header-dl {
    flex-shrink: 0; padding: 9px 18px; border-radius: 999px;
    background: var(--ink); color: #fff; font-size: 0.86rem; font-weight: 600;
  }
  .menu-toggle {
    display: none; width: 40px; height: 40px; border-radius: 12px;
    border: 1px solid var(--line); background: #fff; cursor: pointer;
    flex-direction: column; justify-content: center; align-items: center; gap: 5px;
  }
  .menu-toggle i { display: block; width: 18px; height: 2px; background: var(--ink); border-radius: 2px; }

  /* ---------- hero ---------- */
  .hero { padding: 64px 0 40px; overflow: hidden; }
  .hero-grid {
    display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center;
  }
  .hero-eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 0.78rem; letter-spacing: 0.22em; color: var(--warm); font-weight: 600;
    margin-bottom: 20px;
  }
  .hero-eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--warm); }
  .hero h1 {
    font-size: clamp(2rem, 4vw, 3.1rem); line-height: 1.25; letter-spacing: -0.01em;
    font-weight: 800;
  }
  .hero h1 em { font-style: normal; color: var(--warm); }
  .hero-lead {
    margin-top: 22px; font-size: 1rem; color: var(--ink-soft); max-width: 30em;
  }
  .hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
  .hero-tags li {
    padding: 5px 13px; border-radius: 999px; background: #fff;
    border: 1px solid var(--line); font-size: 0.8rem; color: var(--ink-soft);
  }
  .download-panel {
    margin-top: 32px; padding: 22px; border-radius: var(--radius-lg);
    background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-soft);
  }
  .download-panel h3 { font-size: 0.86rem; letter-spacing: 0.08em; color: var(--ink-soft); font-weight: 600; }
  .download-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 14px; }
  .dl-btn {
    flex: 1 1 150px; display: flex; align-items: center; gap: 10px;
    padding: 12px 16px; border-radius: 16px; background: var(--bg-soft);
    transition: transform 0.25s, background 0.25s;
  }
  .dl-btn:hover { transform: translateY(-2px); background: var(--warm-soft); }
  .dl-btn.primary { background: var(--ink); color: #fff; flex-basis: 100%; }
  .dl-btn.primary:hover { background: #000; }
  .dl-ico {
    width: 30px; height: 30px; flex-shrink: 0; border-radius: 9px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(0,0,0,0.06); font-size: 0.9rem;
  }
  .dl-btn.primary .dl-ico { background: rgba(255,255,255,0.14); }
  .dl-txt strong { display: block; font-size: 0.9rem; line-height: 1.3; }
  .dl-txt small { display: block; font-size: 0.72rem; opacity: 0.6; }

  .hero-visual { position: relative; min-height: 480px; }
  .poster-track {
    display: flex; gap: 18px; animation: slideTrack 26s ease-in-out infinite alternate;
  }
  .poster-col { display: flex; flex-direction: column; gap: 18px; width: 46%; }
  .poster-col.offset { margin-top: 46px; }
  .poster-card {
    border-radius: var(--radius-md); overflow: hidden; background: var(--bg-soft);
    box-shadow: var(--shadow-soft); position: relative;
  }
  .poster-card img { width: 100%; height: auto; aspect-ratio: 3 / 4.2; object-fit: cover; }
  .poster-card figcaption {
    padding: 12px 14px; background: #fff; font-size: 0.86rem; font-weight: 600;
  }
  .poster-card figcaption small { display: block; font-weight: 400; color: var(--ink-soft); font-size: 0.74rem; margin-top: 2px; }
  @keyframes slideTrack {
    0% { transform: translateY(0); }
    100% { transform: translateY(-40px); }
  }

  /* ---------- section base ---------- */
  section { padding: 76px 0; }
  .section-soft { background: var(--bg-soft); }
  .section-head { max-width: 640px; margin-bottom: 44px; }
  .section-head .kicker {
    display: inline-block; font-size: 0.74rem; letter-spacing: 0.2em;
    color: var(--warm); font-weight: 700; margin-bottom: 14px;
  }
  .section-head h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); line-height: 1.35; font-weight: 800; }
  .section-head p { margin-top: 14px; color: var(--ink-soft); font-size: 0.94rem; }

  /* ---------- editor's note ---------- */
  .editor-list { display: flex; flex-direction: column; gap: 56px; }
  .editor-row {
    display: grid; grid-template-columns: 300px 1fr; gap: 44px; align-items: center;
  }
  .editor-row.flip { grid-template-columns: 1fr 300px; }
  .editor-row.flip .editor-poster { order: 2; }
  .editor-poster {
    border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-soft);
  }
  .editor-poster img { width: 100%; aspect-ratio: 3 / 4.3; object-fit: cover; }
  .editor-note .note-label {
    display: inline-block; font-size: 0.72rem; letter-spacing: 0.16em;
    color: var(--warm); font-weight: 700; border-bottom: 1px solid var(--warm);
    padding-bottom: 3px; margin-bottom: 16px;
  }
  .editor-note h3 { font-size: 1.4rem; font-weight: 800; line-height: 1.4; }
  .editor-note p { margin-top: 14px; color: var(--ink-soft); font-size: 0.94rem; }
  .note-meta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
  .note-meta span {
    font-size: 0.76rem; padding: 5px 12px; border-radius: 999px;
    background: var(--warm-soft); color: #8a5f33;
  }

  /* ---------- genre pods ---------- */
  .pod-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
  }
  .pod {
    position: relative; border-radius: var(--radius-lg); overflow: hidden;
    min-height: 280px; padding: 26px; display: flex; flex-direction: column; justify-content: flex-end;
    background: #fff; border: 1px solid var(--line);
    backdrop-filter: blur(6px);
    box-shadow: 0 10px 30px rgba(20, 20, 18, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
  }
  .pod:hover { transform: translateY(-6px); box-shadow: 0 22px 46px rgba(20, 20, 18, 0.1); }
  .pod-img { position: absolute; inset: 0; z-index: 0; }
  .pod-img img { width: 100%; height: 100%; object-fit: cover; opacity: 0.35; }
  .pod::after {
    content: ""; position: absolute; inset: 0; z-index: 1;
    background: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.86) 62%, #fff 100%);
  }
  .pod-body { position: relative; z-index: 2; }
  .pod-body h3 { font-size: 1.15rem; font-weight: 800; }
  .pod-body h3 small { font-size: 0.68rem; letter-spacing: 0.16em; color: var(--warm); margin-left: 6px; font-weight: 700; }
  .pod-body p { margin-top: 8px; font-size: 0.84rem; color: var(--ink-soft); }
  .pod-count { position: absolute; top: 20px; right: 22px; z-index: 2; font-size: 0.74rem; color: var(--ink-soft); }

  /* ---------- timeline ---------- */
  .timeline {
    position: relative; padding-left: 26px; margin-top: 10px;
    border-left: 2px solid var(--line);
  }
  .tl-item { position: relative; padding: 0 0 30px 18px; }
  .tl-item::before {
    content: ""; position: absolute; left: -33px; top: 9px; width: 12px; height: 12px;
    border-radius: 50%; background: #fff; border: 2px solid var(--line);
  }
  .tl-item.prime::before {
    background: var(--warm); border-color: var(--warm);
    box-shadow: 0 0 0 0 rgba(185, 133, 79, 0.5);
    animation: pulse 2.4s infinite;
  }
  @keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(185, 133, 79, 0.45); }
    70% { box-shadow: 0 0 0 12px rgba(185, 133, 79, 0); }
    100% { box-shadow: 0 0 0 0 rgba(185, 133, 79, 0); }
  }
  .tl-time { font-size: 0.82rem; font-weight: 800; letter-spacing: 0.06em; color: var(--warm); }
  .tl-item h3 { font-size: 1rem; font-weight: 700; margin-top: 4px; }
  .tl-item p { font-size: 0.86rem; color: var(--ink-soft); margin-top: 4px; }
  .tl-item.prime h3 { color: var(--ink); }
  .tl-item.prime { background: #fff; border-radius: var(--radius-md); padding: 16px 20px 18px; margin-left: -6px; box-shadow: var(--shadow-soft); }
  .tl-item.prime::before { left: -39px; }

  /* ---------- podium ---------- */
  .podium-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 30px;
  }
  .podium-card {
    border-radius: var(--radius-lg); padding: 26px 22px; background: #fff;
    border: 1px solid var(--line); text-align: center; position: relative;
    transition: transform 0.3s;
  }
  .podium-card:hover { transform: translateY(-6px); }
  .podium-card.top {
    background: linear-gradient(170deg, #fdf7ee, #fff 70%);
    border-color: #f0e0c8;
    box-shadow: 0 18px 44px rgba(185, 133, 79, 0.16);
  }
  .podium-rank {
    font-size: 2.6rem; font-weight: 800; line-height: 1; color: var(--line);
  }
  .podium-card.top .podium-rank { color: var(--warm); }
  .podium-cover { width: 88px; margin: 16px auto 0; border-radius: 12px; overflow: hidden; }
  .podium-cover img { aspect-ratio: 3 / 4; object-fit: cover; }
  .podium-card h3 { font-size: 1rem; margin-top: 14px; font-weight: 800; }
  .podium-card p { font-size: 0.8rem; color: var(--ink-soft); margin-top: 4px; }
  .rank-list { background: #fff; border-radius: var(--radius-lg); border: 1px solid var(--line); overflow: hidden; }
  .rank-row {
    display: flex; align-items: center; gap: 16px; padding: 15px 20px;
    border-bottom: 1px solid var(--line); font-size: 0.9rem;
  }
  .rank-row:last-child { border-bottom: 0; }
  .rank-no { width: 26px; font-weight: 800; color: var(--ink-soft); flex-shrink: 0; }
  .rank-name { flex: 1; font-weight: 600; }
  .rank-stat { font-size: 0.76rem; color: var(--ink-soft); }

  /* ---------- lab ---------- */
  .lab-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 40px; align-items: start; }
  .lab-input {
    background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
    padding: 26px; box-shadow: var(--shadow-soft);
  }
  .lab-input h3 { font-size: 1.05rem; font-weight: 800; }
  .lab-input p { font-size: 0.86rem; color: var(--ink-soft); margin-top: 10px; }
  .lab-draft {
    margin-top: 18px; background: var(--bg-soft); border-radius: 14px; padding: 16px;
    font-size: 0.84rem; color: var(--ink-soft); border-left: 3px solid var(--warm);
  }
  .compare {
    position: relative; overflow: hidden; border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft); background: #fff;
  }
  .compare img { width: 100%; aspect-ratio: 4 / 3.2; object-fit: cover; }
  .compare .after-layer {
    position: absolute; inset: 0; overflow: hidden; width: 50%;
    border-right: 2px solid #fff;
  }
  .compare .after-layer img { width: 200%; max-width: none; height: 100%; filter: saturate(0.2) contrast(1.05); }
  .compare-label {
    position: absolute; bottom: 12px; font-size: 0.7rem; letter-spacing: 0.1em;
    background: rgba(255,255,255,0.9); padding: 3px 10px; border-radius: 999px; color: var(--ink-soft);
  }
  .compare-label.l { left: 12px; }
  .compare-label.r { right: 12px; }
  .compare-range { width: 100%; margin-top: 16px; accent-color: var(--warm); }
  .lab-steps { display: grid; gap: 12px; margin-top: 22px; }
  .lab-steps li {
    background: #fff; border: 1px solid var(--line); border-radius: 14px;
    padding: 12px 16px; font-size: 0.86rem; display: flex; gap: 10px; align-items: baseline;
  }
  .lab-steps li b { color: var(--warm); font-size: 0.78rem; letter-spacing: 0.1em; flex-shrink: 0; }

  /* ---------- review wall ---------- */
  .review-wall {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px;
  }
  .review-card {
    background: #fff; border: 1px solid var(--line); border-radius: 20px;
    padding: 18px; display: flex; gap: 12px; align-items: flex-start;
    transition: transform 0.3s;
  }
  .review-card:nth-child(3n+2) { transform: translateY(14px); }
  .review-card:hover { transform: translateY(-4px); }
  .review-card:nth-child(3n+2):hover { transform: translateY(8px); }
  .review-avatar { width: 36px; height: 36px; border-radius: 50%; overflow: hidden; flex-shrink: 0; }
  .review-avatar img { width: 100%; height: 100%; object-fit: cover; }
  .review-body p { font-size: 0.86rem; }
  .review-body span { display: block; font-size: 0.72rem; color: var(--ink-soft); margin-top: 6px; }

  /* ---------- faq ---------- */
  .faq-list { max-width: 820px; }
  .faq-item { border-bottom: 1px solid var(--line); }
  .faq-q {
    width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
    padding: 20px 40px 20px 0; font-size: 1rem; font-weight: 700; font-family: inherit;
    color: var(--ink); position: relative; line-height: 1.6;
  }
  .faq-q::after {
    content: "+"; position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
    font-size: 1.4rem; font-weight: 400; color: var(--warm); transition: transform 0.3s;
  }
  .faq-item.open .faq-q::after { transform: translateY(-50%) rotate(45deg); }
  .faq-a {
    max-height: 0; overflow: hidden; transition: max-height 0.35s ease;
  }
  .faq-a p { padding: 0 0 22px; font-size: 0.9rem; color: var(--ink-soft); }

  /* ---------- final download ---------- */
  .final-dl {
    background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
    padding: 44px 36px; box-shadow: var(--shadow-soft);
  }
  .final-dl h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); font-weight: 800; }
  .final-dl > p { margin-top: 12px; color: var(--ink-soft); font-size: 0.94rem; max-width: 40em; }
  .install-steps {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 28px 0 30px;
  }
  .install-steps li {
    background: var(--bg-soft); border-radius: 16px; padding: 18px;
    font-size: 0.86rem; color: var(--ink-soft);
  }
  .install-steps li b { display: block; font-size: 0.74rem; letter-spacing: 0.14em; color: var(--warm); margin-bottom: 6px; }

  /* ---------- footer ---------- */
  .site-footer {
    border-top: 1px solid var(--line); padding: 44px 0 32px; background: var(--bg);
  }
  .footer-top { display: flex; flex-wrap: wrap; gap: 32px; justify-content: space-between; }
  .footer-brand { display: flex; align-items: center; gap: 10px; }
  .footer-brand img { height: 30px; width: auto; border-radius: 8px; }
  .footer-brand strong { font-size: 1rem; }
  .footer-about { max-width: 420px; font-size: 0.86rem; color: var(--ink-soft); margin-top: 14px; }
  .footer-links { display: flex; flex-wrap: wrap; gap: 10px 22px; font-size: 0.86rem; color: var(--ink-soft); }
  .footer-bottom {
    margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--line);
    display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between;
    font-size: 0.78rem; color: var(--ink-soft);
  }

  /* ---------- baidu modal ---------- */
  .copy-modal {
    position: fixed; inset: 0; z-index: 200; display: none;
    align-items: center; justify-content: center; padding: 24px;
    background: rgba(22, 22, 22, 0.42);
  }
  .copy-modal.show { display: flex; }
  .copy-box {
    width: 100%; max-width: 380px; background: #fff; border-radius: 22px;
    padding: 26px 24px; box-shadow: 0 30px 70px rgba(0,0,0,0.2); text-align: center;
  }
  .copy-box p { font-size: 0.9rem; line-height: 1.7; }
  .copy-url {
    margin: 18px 0; padding: 12px; border-radius: 12px; background: var(--bg-soft);
    font-size: 0.78rem; color: var(--ink-soft); word-break: break-all;
  }
  .copy-btn {
    width: 100%; padding: 12px; border: 0; border-radius: 12px; cursor: pointer;
    background: var(--ink); color: #fff; font-family: inherit; font-size: 0.9rem; font-weight: 600;
  }
  .copy-close { margin-top: 10px; background: none; border: 0; cursor: pointer; font-family: inherit; font-size: 0.8rem; color: var(--ink-soft); }

  /* ---------- responsive ---------- */
  @media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .hero-visual { min-height: 0; }
    .poster-track { animation: none; }
    .poster-col.offset { margin-top: 0; }
    .poster-col { width: 50%; }
    .editor-row, .editor-row.flip { grid-template-columns: 220px 1fr; gap: 28px; }
    .editor-row.flip .editor-poster { order: 0; }
    .pod-grid { grid-template-columns: repeat(2, 1fr); }
    .lab-grid { grid-template-columns: 1fr; }
    .podium-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .main-nav { display: none; }
    .main-nav.open {
      display: block; position: absolute; left: 0; right: 0; top: 68px;
      background: #fff; border-bottom: 1px solid var(--line); padding: 14px 24px;
    }
    .main-nav.open ul { flex-direction: column; gap: 2px; }
    .menu-toggle { display: flex; }
    .header-dl { margin-left: auto; }
  }
  @media (max-width: 768px) {
    .wrap { padding: 0 18px; }
    section { padding: 54px 0; }
    .hero { padding: 40px 0 30px; }
    .editor-row, .editor-row.flip { grid-template-columns: 1fr; gap: 20px; }
    .editor-poster { max-width: 260px; }
    .pod-grid { grid-template-columns: 1fr; }
    .podium-grid { grid-template-columns: 1fr; }
    .review-card:nth-child(3n+2), .review-card:nth-child(3n+2):hover { transform: none; }
    .install-steps { grid-template-columns: 1fr; }
    .final-dl { padding: 30px 22px; }
    .header-dl { padding: 8px 14px; font-size: 0.8rem; }
    .brand span { font-size: 0.95rem; }
    .site-header .header-inner { height: 62px; }
    .main-nav.open { top: 62px; }
    .timeline { padding-left: 20px; }
    .tl-item.prime { padding: 14px 16px 16px; }
  }