:root {
    --bg: #0e0e12;
    --bg-soft: #17171f;
    --card: #1d1d28;
    --line: #2b2b38;
    --gold: #ffd24a;
    --gold-deep: #f5b800;
    --red: #ff4d5a;
    --text: #f4f4f6;
    --muted: #9a9aa8;
    --radius: 14px;
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    background: var(--bg);
    color: var(--text);
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  img { display: block; max-width: 100%; }
  a { color: inherit; text-decoration: none; }
  .wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 20px; }

  /* ---------- header ---------- */
  .site-header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(14,14,18,.86);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--line);
  }
  .header-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 64px;
  }
  .brand { display: flex; align-items: center; gap: 10px; }
  .brand img { height: 34px; width: auto; border-radius: 8px; }
  .brand span { font-weight: 700; font-size: 17px; letter-spacing: .3px; }
  .nav-links { display: none; gap: 26px; font-size: 14px; color: var(--muted); }
  .nav-links a:hover { color: var(--gold); }
  .header-cta {
    background: linear-gradient(135deg, var(--gold), var(--gold-deep));
    color: #241c00; font-weight: 700; font-size: 14px;
    padding: 9px 20px; border-radius: 999px;
    white-space: nowrap;
  }
  .header-cta:hover { filter: brightness(1.08); }

  /* ---------- hero ---------- */
  .hero {
    position: relative;
    padding: 62px 0 70px;
    background:
      radial-gradient(circle at 82% 12%, rgba(255,210,74,.16), transparent 46%),
      radial-gradient(circle at 8% 78%, rgba(255,77,90,.13), transparent 42%);
    overflow: hidden;
  }
  .hero-grid { display: grid; gap: 40px; }
  .hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(255,210,74,.12);
    border: 1px solid rgba(255,210,74,.34);
    color: var(--gold);
    font-size: 13px; font-weight: 600;
    padding: 5px 14px; border-radius: 999px;
    margin-bottom: 20px;
  }
  .hero h1 {
    font-size: 34px; line-height: 1.28; font-weight: 800;
    letter-spacing: -.5px;
    margin-bottom: 18px;
  }
  .hero h1 em {
    font-style: normal;
    background: linear-gradient(120deg, var(--gold), var(--red));
    -webkit-background-clip: text; background-clip: text; color: transparent;
  }
  .hero p.lead { color: #c9c9d4; font-size: 16px; max-width: 560px; margin-bottom: 14px; }
  .hero-tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0 30px; }
  .hero-tags span {
    font-size: 13px; color: #d8d8e2;
    background: rgba(255,255,255,.06);
    border: 1px solid var(--line);
    padding: 6px 13px; border-radius: 999px;
  }
  .hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
  .btn-download {
    display: inline-flex; align-items: center; gap: 9px;
    background: linear-gradient(135deg, var(--gold), var(--gold-deep));
    color: #221a00; font-weight: 800; font-size: 17px;
    padding: 15px 36px; border-radius: 999px;
    box-shadow: 0 10px 30px rgba(245,184,0,.28);
    transition: transform .18s ease, box-shadow .18s ease;
  }
  .btn-download:hover { transform: translateY(-2px); box-shadow: 0 14px 36px rgba(245,184,0,.4); }
  .btn-download svg { width: 18px; height: 18px; }
  .hero-note { font-size: 13px; color: var(--muted); }

  .hero-poster {
    position: relative;
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  }
  .hero-poster figure {
    border-radius: 12px; overflow: hidden;
    border: 1px solid var(--line);
    background: var(--card);
    box-shadow: 0 18px 40px rgba(0,0,0,.5);
  }
  .hero-poster figure:nth-child(2) { transform: translateY(26px); }
  .hero-poster img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 3 / 4; }
  .hero-poster figure:nth-child(3) { transform: translateY(10px); }

  /* ---------- section shell ---------- */
  section { padding: 64px 0; }
  .sec-head { margin-bottom: 34px; }
  .sec-head .kicker {
    display: inline-block; font-size: 13px; font-weight: 700;
    color: var(--gold); letter-spacing: 2px; margin-bottom: 10px;
  }
  .sec-head h2 { font-size: 26px; font-weight: 800; letter-spacing: -.3px; }
  .sec-head p { color: var(--muted); font-size: 15px; margin-top: 10px; max-width: 640px; }

  /* ---------- 平台简介 ---------- */
  .intro { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .intro-grid { display: grid; gap: 30px; }
  .intro-text p { color: #c4c4d0; font-size: 15.5px; margin-bottom: 14px; }
  .intro-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .stat-card {
    background: var(--card); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 18px;
  }
  .stat-card b { display: block; color: var(--gold); font-size: 20px; margin-bottom: 4px; }
  .stat-card span { font-size: 13px; color: var(--muted); }

  /* ---------- 热播剧 ---------- */
  .poster-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .poster-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform .2s ease, border-color .2s ease;
  }
  .poster-card:hover { transform: translateY(-4px); border-color: rgba(255,210,74,.5); }
  .poster-card .thumb { position: relative; }
  .poster-card img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; }
  .poster-card .tag {
    position: absolute; left: 10px; top: 10px;
    background: rgba(0,0,0,.62); color: var(--gold);
    font-size: 12px; padding: 3px 10px; border-radius: 999px;
    border: 1px solid rgba(255,210,74,.4);
  }
  .poster-card .meta { padding: 12px 14px 16px; }
  .poster-card .meta h3 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
  .poster-card .meta p { font-size: 12.5px; color: var(--muted); }

  /* ---------- 优势 ---------- */
  .feature-grid { display: grid; gap: 16px; }
  .feature-item {
    background: var(--card); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 22px;
  }
  .feature-item .ico {
    width: 42px; height: 42px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(255,210,74,.14); color: var(--gold);
    font-size: 19px; font-weight: 800; margin-bottom: 14px;
  }
  .feature-item h3 { font-size: 16.5px; margin-bottom: 8px; }
  .feature-item p { font-size: 14px; color: var(--muted); }

  /* ---------- 专题 ---------- */
  .topic-grid { display: grid; gap: 16px; }
  .topic-card {
    position: relative; border-radius: var(--radius); overflow: hidden;
    border: 1px solid var(--line); min-height: 200px;
    display: flex; align-items: flex-end;
  }
  .topic-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
  .topic-card::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(8,8,12,.94) 4%, rgba(8,8,12,.35) 58%, rgba(8,8,12,.12));
  }
  .topic-card .txt { position: relative; z-index: 2; padding: 20px; }
  .topic-card .txt h3 { font-size: 18px; margin-bottom: 6px; }
  .topic-card .txt p { font-size: 13.5px; color: #cfcfdb; }

  /* ---------- 怎么拿 ---------- */
  .steps { display: grid; gap: 18px; counter-reset: step; }
  .step-item {
    background: var(--card); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 22px;
    display: flex; gap: 16px; align-items: flex-start;
  }
  .step-num {
    flex: 0 0 38px; height: 38px; border-radius: 50%;
    background: linear-gradient(135deg, var(--gold), var(--gold-deep));
    color: #231b00; font-weight: 800; display: flex;
    align-items: center; justify-content: center; font-size: 16px;
  }
  .step-item h3 { font-size: 16px; margin-bottom: 6px; }
  .step-item p { font-size: 14px; color: var(--muted); }

  /* ---------- 弹幕评价 ---------- */
  .danmu-section { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); overflow: hidden; }
  .danmu-stage { display: grid; gap: 14px; }
  .danmu-row {
    display: flex; gap: 14px; width: max-content;
    animation: danmu-scroll 34s linear infinite;
  }
  .danmu-row.reverse { animation-direction: reverse; animation-duration: 42s; }
  .danmu-row:hover { animation-play-state: paused; }
  @keyframes danmu-scroll {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
  }
  .danmu-item {
    white-space: nowrap; font-size: 14px;
    background: rgba(255,255,255,.055);
    border: 1px solid var(--line);
    border-radius: 999px; padding: 9px 18px;
    color: #dcdce6;
  }
  .danmu-item b { color: var(--gold); font-weight: 600; margin-right: 6px; }

  /* ---------- FAQ ---------- */
  .faq-list { display: grid; gap: 12px; }
  .faq-list details {
    background: var(--card); border: 1px solid var(--line);
    border-radius: var(--radius); padding: 16px 20px;
  }
  .faq-list details[open] { border-color: rgba(255,210,74,.42); }
  .faq-list summary {
    cursor: pointer; list-style: none; font-weight: 700; font-size: 15.5px;
    display: flex; justify-content: space-between; align-items: center; gap: 12px;
  }
  .faq-list summary::-webkit-details-marker { display: none; }
  .faq-list summary::after { content: "+"; color: var(--gold); font-size: 20px; line-height: 1; }
  .faq-list details[open] summary::after { content: "−"; }
  .faq-list details p { margin-top: 12px; font-size: 14px; color: var(--muted); }

  /* ---------- 下载 ---------- */
  .download {
    background:
      radial-gradient(circle at 50% 0%, rgba(255,210,74,.18), transparent 60%),
      var(--bg);
    text-align: center;
    border-top: 1px solid var(--line);
  }
  .download h2 { font-size: 28px; font-weight: 800; margin-bottom: 14px; }
  .download p { color: #c6c6d2; font-size: 15.5px; max-width: 560px; margin: 0 auto 30px; }
  .download .btn-download { font-size: 18px; padding: 17px 46px; }
  .download .tips { margin-top: 22px; font-size: 13px; color: var(--muted); }

  /* ---------- footer ---------- */
  .site-footer {
    border-top: 1px solid var(--line);
    padding: 34px 0 26px;
    font-size: 13px; color: var(--muted);
  }
  .footer-top { display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between; align-items: center; margin-bottom: 16px; }
  .footer-brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 600; }
  .footer-brand img { height: 26px; width: auto; border-radius: 6px; }
  .site-footer time { font-size: 12px; color: #6f6f80; }

  /* ---------- responsive ---------- */
  @media (min-width: 768px) {
    .nav-links { display: flex; }
    .hero { padding: 78px 0 90px; }
    .hero h1 { font-size: 44px; }
    .hero p.lead { font-size: 17px; }
    .hero-grid { grid-template-columns: 1.1fr .9fr; align-items: center; gap: 54px; }
    .intro-grid { grid-template-columns: 1.15fr .85fr; align-items: start; gap: 44px; }
    .poster-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .topic-grid { grid-template-columns: repeat(2, 1fr); }
    .steps { grid-template-columns: repeat(3, 1fr); }
    .sec-head h2 { font-size: 30px; }
    section { padding: 80px 0; }
  }
  @media (min-width: 1024px) {
    .hero h1 { font-size: 52px; }
    .poster-grid { grid-template-columns: repeat(4, 1fr); }
    .feature-grid { grid-template-columns: repeat(4, 1fr); }
    .topic-grid { grid-template-columns: repeat(3, 1fr); }
    .topic-card { min-height: 250px; }
    .download h2 { font-size: 34px; }
  }