:root{
    --bg:#12100e;
    --bg-soft:#1b1814;
    --card:#221e18;
    --line:rgba(255,214,102,.16);
    --yellow:#ffd644;
    --yellow-deep:#f0b400;
    --text:#f4efe4;
    --muted:#a79f8f;
    --radius:18px;
  }
  *{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--bg);
    color:var(--text);
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
    line-height:1.75;
    -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;}
  section{padding:72px 0;position:relative;}
  .sec-label{
    display:inline-block;font-size:13px;letter-spacing:.18em;
    color:var(--yellow);border:1px solid var(--line);
    padding:4px 12px;border-radius:999px;margin-bottom:18px;
  }
  h2{font-size:30px;line-height:1.3;font-weight:800;margin-bottom:14px;}
  h3{font-size:19px;font-weight:700;margin-bottom:8px;}
  p.lead{color:var(--muted);max-width:760px;font-size:16px;}

  /* ---------- header ---------- */
  header.site-head{
    position:sticky;top:0;z-index:50;
    background:rgba(18,16,14,.88);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
  }
  .head-inner{
    display:flex;align-items:center;justify-content:space-between;
    gap:16px;height:64px;
  }
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand img{height:34px;width:34px;border-radius:9px;object-fit:cover;}
  .brand span{font-weight:800;font-size:18px;letter-spacing:.02em;color:var(--yellow);}
  nav.main-nav{display:flex;gap:22px;flex-wrap:wrap;}
  nav.main-nav a{font-size:14px;color:var(--muted);transition:color .2s;}
  nav.main-nav a:hover{color:var(--yellow);}
  .nav-toggle{
    display:none;background:none;border:1px solid var(--line);
    color:var(--text);font-size:14px;padding:6px 12px;border-radius:10px;
  }

  /* ---------- hero ---------- */
  .hero{
    padding:64px 0 72px;
    background:
      radial-gradient(900px 460px at 82% 8%, rgba(255,214,68,.14), transparent 62%),
      radial-gradient(700px 420px at 6% 92%, rgba(240,120,40,.12), transparent 65%),
      linear-gradient(180deg,#1a1611,#12100e 82%);
    border-bottom:1px solid var(--line);
  }
  .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
  .hero h1{
    font-size:44px;line-height:1.22;font-weight:900;letter-spacing:-.01em;
    margin-bottom:18px;
  }
  .hero h1 em{font-style:normal;color:var(--yellow);}
  .hero p.lead{font-size:17px;margin-bottom:26px;max-width:520px;}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
  .hero-tags span{
    font-size:13px;color:var(--yellow);
    background:rgba(255,214,68,.09);
    border:1px solid var(--line);
    padding:5px 13px;border-radius:999px;
  }
  .dl-group{display:flex;flex-wrap:wrap;gap:12px;}
  .btn{
    display:inline-flex;align-items:center;gap:8px;
    padding:13px 22px;border-radius:999px;
    font-weight:700;font-size:15px;
    transition:transform .18s ease, box-shadow .18s ease, background .18s ease;
  }
  .btn-main{
    background:linear-gradient(135deg,var(--yellow),var(--yellow-deep));
    color:#241c00;
    box-shadow:0 10px 26px rgba(255,190,0,.24);
  }
  .btn-main:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,190,0,.34);}
  .btn-ghost{
    border:1px solid var(--line);color:var(--text);
    background:rgba(255,255,255,.03);
  }
  .btn-ghost:hover{transform:translateY(-2px);border-color:rgba(255,214,68,.45);}
  .hero-note{font-size:13px;color:var(--muted);margin-top:16px;}

  .hero-collage{
    display:grid;grid-template-columns:repeat(2,1fr);
    gap:14px;
  }
  .hero-collage figure{
    border-radius:16px;overflow:hidden;position:relative;
    border:1px solid var(--line);
    background:var(--card);
  }
  .hero-collage figure:nth-child(1){transform:translateY(16px);}
  .hero-collage figure:nth-child(4){transform:translateY(16px);}
  .hero-collage img{width:100%;height:230px;object-fit:cover;}
  .hero-collage figcaption{
    position:absolute;left:0;right:0;bottom:0;
    padding:10px 12px;font-size:12px;color:#fff;
    background:linear-gradient(180deg,transparent,rgba(0,0,0,.82));
  }

  /* ---------- about / ai ---------- */
  .about-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:34px;}
  .about-card{
    background:var(--bg-soft);border:1px solid var(--line);
    border-radius:var(--radius);padding:26px 22px;
    transition:transform .2s ease,border-color .2s ease;
  }
  .about-card:hover{transform:translateY(-4px);border-color:rgba(255,214,68,.4);}
  .about-card .num{
    display:inline-block;font-size:13px;font-weight:800;color:#241c00;
    background:var(--yellow);border-radius:8px;
    padding:1px 9px;margin-bottom:12px;
  }
  .about-card p{color:var(--muted);font-size:14.5px;}

  /* ---------- hot list ---------- */
  .hot{background:linear-gradient(180deg,#14120f,#191510);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .poster-grid{
    display:grid;grid-template-columns:repeat(4,1fr);
    gap:20px;margin-top:34px;
  }
  .poster{
    background:var(--card);border:1px solid var(--line);
    border-radius:16px;overflow:hidden;
    transition:transform .22s ease, box-shadow .22s ease;
  }
  .poster:hover{transform:translateY(-6px);box-shadow:0 18px 34px rgba(0,0,0,.45);}
  .poster img{width:100%;height:300px;object-fit:cover;}
  .poster-body{padding:14px 14px 16px;}
  .poster-body h3{font-size:16px;margin-bottom:6px;}
  .poster-body .desc{font-size:13px;color:var(--muted);margin-bottom:10px;min-height:42px;}
  .poster-meta{display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
  .tag{font-size:11.5px;color:var(--yellow);border:1px solid var(--line);border-radius:6px;padding:1px 7px;}
  .date{font-size:11.5px;color:#7f7869;margin-left:auto;}

  /* ---------- install steps ---------- */
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:36px;counter-reset:step;}
  .step{
    position:relative;background:var(--bg-soft);
    border:1px solid var(--line);border-radius:var(--radius);
    padding:30px 20px 22px;
  }
  .step::before{
    counter-increment:step;content:"0" counter(step);
    position:absolute;top:-18px;left:20px;
    font-size:26px;font-weight:900;color:var(--yellow);
    background:var(--bg);padding:0 8px;line-height:1;
  }
  .step h3{font-size:16px;margin:6px 0 8px;}
  .step p{font-size:13.5px;color:var(--muted);}
  .steps-extra{
    margin-top:22px;border-left:3px solid var(--yellow);
    padding:14px 18px;background:rgba(255,214,68,.06);
    border-radius:0 12px 12px 0;color:var(--muted);font-size:14px;
  }

  /* ---------- faq / privacy ---------- */
  .two-col{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:34px;}
  .qa{background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;overflow:hidden;}
  .qa summary{
    cursor:pointer;list-style:none;padding:16px 18px;
    font-size:15px;font-weight:700;display:flex;gap:10px;align-items:flex-start;
    transition:color .2s;
  }
  .qa summary::-webkit-details-marker{display:none;}
  .qa summary::before{content:"问";color:var(--yellow);font-weight:900;flex-shrink:0;}
  .qa[open] summary{color:var(--yellow);}
  .qa .answer{
    padding:0 18px 18px 34px;font-size:14px;color:var(--muted);
  }
  .qa .answer::before{content:"答：";color:var(--yellow);}

  .privacy-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin-top:26px;}
  .privacy-card{
    background:var(--bg-soft);border:1px solid var(--line);
    border-radius:14px;padding:18px 16px;
  }
  .privacy-card h3{font-size:14.5px;margin-bottom:6px;}
  .privacy-card p{font-size:13px;color:var(--muted);}

  /* ---------- creator & community ---------- */
  .creator{
    background:linear-gradient(120deg,#1d1811,#13110e 70%);
    border-top:1px solid var(--line);
  }
  .creator-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;margin-top:30px;}
  .creator-list{display:flex;flex-direction:column;gap:14px;}
  .creator-item{
    display:flex;gap:14px;background:var(--bg-soft);
    border:1px solid var(--line);border-radius:14px;padding:16px 18px;
  }
  .creator-item .dot{
    width:10px;height:10px;border-radius:50%;background:var(--yellow);
    flex-shrink:0;margin-top:8px;
  }
  .creator-item p{font-size:13.5px;color:var(--muted);}
  .community-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
  .community-tags span{
    font-size:13px;padding:6px 13px;border-radius:999px;
    background:rgba(255,214,68,.08);border:1px solid var(--line);color:var(--yellow);
  }
  .community-card{
    background:var(--bg-soft);border:1px solid var(--line);
    border-radius:var(--radius);padding:26px;
  }
  .community-card ul{list-style:none;display:flex;flex-direction:column;gap:14px;}
  .community-card li{font-size:14px;color:var(--muted);padding-left:18px;position:relative;}
  .community-card li::before{content:"›";position:absolute;left:0;color:var(--yellow);font-weight:900;}

  /* ---------- reviews ---------- */
  .reviews{background:#14120f;border-top:1px solid var(--line);}
  .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:34px;}
  .review{
    background:var(--card);border:1px solid var(--line);
    border-radius:16px;padding:20px;
  }
  .review .who{font-size:13px;color:var(--yellow);margin-bottom:8px;font-weight:700;}
  .review p{font-size:14px;color:#d9d2c3;}

  /* ---------- download ---------- */
  .download{
    background:
      radial-gradient(700px 320px at 50% 0%, rgba(255,214,68,.16), transparent 65%),
      linear-gradient(180deg,#191510,#12100e);
    border-top:1px solid var(--line);
    text-align:center;
  }
  .download h2{font-size:32px;}
  .download p.lead{margin:0 auto 26px;}
  .dl-row{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;}
  .dl-extra{
    max-width:760px;margin:40px auto 0;
    background:var(--bg-soft);border:1px solid var(--line);
    border-radius:var(--radius);padding:24px 26px;text-align:left;
  }
  .dl-extra h3{font-size:16px;color:var(--yellow);margin-bottom:12px;}
  .dl-extra ol{padding-left:20px;color:var(--muted);font-size:14px;display:flex;flex-direction:column;gap:8px;}

  /* ---------- footer ---------- */
  footer{
    background:#0e0c0a;border-top:1px solid var(--line);
    padding:30px 0 36px;font-size:12.5px;color:#6f695c;
  }
  .foot-inner{display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center;justify-content:space-between;}
  footer a{color:#8a8272;}
  footer a:hover{color:var(--yellow);}
  .foot-time{color:#5f5a4f;}

  /* ---------- responsive ---------- */
  @media (max-width:1024px){
    .hero h1{font-size:36px;}
    .hero-grid{grid-template-columns:1fr;gap:36px;}
    .hero-collage img{height:200px;}
    .poster-grid{grid-template-columns:repeat(3,1fr);}
    .privacy-grid{grid-template-columns:repeat(3,1fr);}
    .steps{grid-template-columns:repeat(2,1fr);}
    .creator-grid{grid-template-columns:1fr;}
    .review-grid{grid-template-columns:repeat(2,1fr);}
    .about-grid{grid-template-columns:1fr 1fr;}
  }
  @media (max-width:768px){
    section{padding:54px 0;}
    h2{font-size:24px;}
    .hero{padding:40px 0 54px;}
    .hero h1{font-size:30px;}
    .hero-collage img{height:160px;}
    .poster-grid{grid-template-columns:repeat(2,1fr);gap:14px;}
    .poster img{height:230px;}
    .about-grid,.two-col,.review-grid{grid-template-columns:1fr;}
    .privacy-grid{grid-template-columns:1fr 1fr;}
    .steps{grid-template-columns:1fr;}
    .head-inner{height:58px;}
    nav.main-nav{
      display:none;position:absolute;top:58px;left:0;right:0;
      flex-direction:column;gap:0;
      background:#171410;border-bottom:1px solid var(--line);
      padding:8px 20px 16px;
    }
    nav.main-nav.open{display:flex;}
    nav.main-nav a{padding:10px 0;border-bottom:1px solid rgba(255,214,68,.08);}
    .nav-toggle{display:inline-block;}
    .btn{padding:12px 18px;font-size:14px;}
    .dl-group{width:100%;}
  }