:root{
    --bg:#0b0d14;
    --bg-soft:#12151f;
    --panel:#171b28;
    --panel-2:#1e2434;
    --line:rgba(255,255,255,.08);
    --text:#eef1f8;
    --muted:#a2aabf;
    --accent:#7cf0b8;
    --accent-2:#8b7cff;
    --pink:#ff7ba8;
    --radius:18px;
  }
  *{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  body{
    background:
      radial-gradient(900px 500px at 85% -10%, rgba(139,124,255,.28), transparent 60%),
      radial-gradient(700px 420px at 0% 5%, rgba(124,240,184,.16), transparent 55%),
      var(--bg);
    color:var(--text);
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,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;}
  .eyebrow{
    display:inline-block;font-size:12px;letter-spacing:.18em;
    color:var(--accent);border:1px solid rgba(124,240,184,.35);
    padding:4px 12px;border-radius:999px;background:rgba(124,240,184,.07);
  }
  h1,h2,h3{line-height:1.3;font-weight:800;letter-spacing:.01em;}
  .section-title{font-size:clamp(22px,3vw,32px);margin:12px 0 10px;}
  .section-sub{color:var(--muted);font-size:15px;max-width:720px;}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:50;
    backdrop-filter:blur(14px);
    background:rgba(11,13,20,.78);
    border-bottom:1px solid var(--line);
  }
  .nav-bar{
    display:flex;align-items:center;gap:18px;
    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;white-space:nowrap;}
  .nav-links{
    display:flex;gap:6px;margin-left:auto;
    overflow-x:auto;scrollbar-width:none;
  }
  .nav-links::-webkit-scrollbar{display:none;}
  .nav-links a{
    font-size:14px;color:var(--muted);padding:7px 12px;border-radius:999px;
    white-space:nowrap;transition:color .2s,background .2s;
  }
  .nav-links a:hover{color:var(--text);background:rgba(255,255,255,.07);}
  .nav-links a.hot{color:var(--accent);}

  /* ---------- hero ---------- */
  .hero{position:relative;padding:56px 0 64px;overflow:hidden;}
  .hero::after{
    content:"";position:absolute;width:520px;height:520px;right:-180px;top:-120px;
    background:conic-gradient(from 90deg,rgba(139,124,255,.35),rgba(124,240,184,.28),rgba(255,123,168,.3),rgba(139,124,255,.35));
    filter:blur(80px);border-radius:50%;z-index:0;opacity:.75;
  }
  .hero-grid{
    position:relative;z-index:1;
    display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;
  }
  .hero h1{font-size:clamp(30px,4.4vw,50px);margin:16px 0 18px;}
  .hero h1 em{
    font-style:normal;
    background:linear-gradient(100deg,var(--accent),#9ad9ff 45%,var(--accent-2));
    -webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .hero p.lead{color:#c3cadd;font-size:16px;max-width:560px;}
  .hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 26px;}
  .hero-tags span{
    font-size:13px;color:#cfd6e6;background:rgba(255,255,255,.06);
    border:1px solid var(--line);padding:5px 12px;border-radius:999px;
  }
  .dl-row{display:flex;flex-wrap:wrap;gap:12px;}
  .btn{
    display:inline-flex;align-items:center;gap:9px;
    padding:13px 22px;border-radius:14px;font-weight:700;font-size:15px;
    transition:transform .18s ease,box-shadow .18s ease,background .18s;
    border:1px solid transparent;
  }
  .btn:hover{transform:translateY(-2px);}
  .btn-primary{
    background:linear-gradient(120deg,var(--accent),#54d7ff);
    color:#07130f;box-shadow:0 12px 30px rgba(124,240,184,.28);
  }
  .btn-ghost{
    background:rgba(255,255,255,.05);color:var(--text);
    border-color:rgba(255,255,255,.16);
  }
  .btn-ghost:hover{background:rgba(255,255,255,.11);}
  .btn i{font-style:normal;font-size:16px;}
  .hero-note{margin-top:16px;font-size:13px;color:var(--muted);}

  /* device mockups */
  .device-stage{position:relative;display:flex;justify-content:center;align-items:flex-end;gap:14px;min-height:360px;}
  .phone{
    width:150px;border-radius:26px;padding:7px;
    background:linear-gradient(160deg,#2b3245,#141824);
    border:1px solid rgba(255,255,255,.12);
    box-shadow:0 28px 60px rgba(0,0,0,.55);
  }
  .phone img{width:100%;border-radius:20px;aspect-ratio:9/16;object-fit:cover;}
  .phone.p2{transform:translateY(-30px) scale(1.04);z-index:2;border-color:rgba(124,240,184,.45);}
  .phone.p3{transform:translateY(10px);}
  .device-glow{
    position:absolute;bottom:0;width:80%;height:120px;border-radius:50%;
    background:radial-gradient(closest-side,rgba(139,124,255,.45),transparent);
    filter:blur(28px);z-index:-1;
  }

  /* ---------- section shell ---------- */
  section{padding:64px 0;position:relative;}
  .sec-head{margin-bottom:34px;}

  /* ---------- AI zone ---------- */
  .ai-zone{background:linear-gradient(180deg,rgba(139,124,255,.10),transparent 70%);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .ai-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;align-items:start;}
  .ai-feature{
    border-radius:var(--radius);overflow:hidden;position:relative;
    border:1px solid rgba(255,255,255,.12);background:var(--panel);
  }
  .ai-feature img{width:100%;aspect-ratio:4/5;object-fit:cover;}
  .ai-feature figcaption{
    position:absolute;left:0;right:0;bottom:0;padding:18px;
    background:linear-gradient(transparent,rgba(8,10,16,.94));
  }
  .ai-feature figcaption strong{display:block;font-size:17px;margin-bottom:4px;}
  .ai-feature figcaption small{color:#c9d1e4;font-size:12.5px;}
  .ai-points{display:grid;gap:14px;}
  .ai-point{
    display:flex;gap:14px;padding:16px 18px;border-radius:14px;
    background:rgba(255,255,255,.04);border:1px solid var(--line);
  }
  .ai-point b{
    flex-shrink:0;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
    background:linear-gradient(140deg,rgba(139,124,255,.4),rgba(124,240,184,.3));
    color:#eaf6ff;font-size:13px;
  }
  .ai-point h3{font-size:15px;margin-bottom:2px;}
  .ai-point p{font-size:13.5px;color:var(--muted);}

  /* ---------- charts ---------- */
  .chart-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
  .chart-card{
    background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
    padding:14px;transition:transform .2s,border-color .2s,box-shadow .2s;
  }
  .chart-card:hover{transform:translateY(-5px);border-color:rgba(124,240,184,.4);box-shadow:0 18px 40px rgba(0,0,0,.4);}
  .chart-poster{position:relative;border-radius:12px;overflow:hidden;}
  .chart-poster img{width:100%;aspect-ratio:3/4;object-fit:cover;}
  .chart-rank{
    position:absolute;top:8px;left:8px;font-size:12px;font-weight:800;
    background:linear-gradient(120deg,var(--accent),#5fd6ff);color:#06120e;
    padding:2px 9px;border-radius:8px;
  }
  .chart-score{
    position:absolute;top:8px;right:8px;font-size:12px;font-weight:700;
    background:rgba(8,10,16,.78);color:#ffd88a;padding:2px 8px;border-radius:8px;
  }
  .chart-body{padding:12px 4px 4px;}
  .chart-body h3{font-size:15px;margin-bottom:4px;}
  .chart-body p{font-size:12.5px;color:var(--muted);margin-bottom:8px;}
  .chart-meta{display:flex;flex-wrap:wrap;gap:6px;align-items:center;font-size:11.5px;color:#93a0bb;}
  .chart-meta span{background:rgba(255,255,255,.06);border:1px solid var(--line);padding:1px 8px;border-radius:999px;}
  .chart-meta time{margin-left:auto;color:#7f8aa3;}

  /* ---------- steps (closing + shortcut) ---------- */
  .steps-wrap{
    background:linear-gradient(150deg,rgba(124,240,184,.10),rgba(139,124,255,.12));
    border:1px solid rgba(255,255,255,.12);border-radius:24px;padding:38px 30px;
  }
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:26px;}
  .step{
    background:rgba(10,13,20,.62);border:1px solid var(--line);
    border-radius:16px;padding:18px;
  }
  .step em{
    font-style:normal;display:inline-grid;place-items:center;width:30px;height:30px;
    border-radius:9px;background:rgba(124,240,184,.18);color:var(--accent);
    font-weight:800;font-size:13px;margin-bottom:10px;
  }
  .step h3{font-size:15px;margin-bottom:4px;}
  .step p{font-size:13px;color:var(--muted);}
  .steps-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;align-items:center;}
  .steps-cta small{color:var(--muted);font-size:12.5px;}

  /* ---------- faq ---------- */
  .faq-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
  .faq-item{border:1px solid var(--line);border-radius:14px;background:var(--panel);overflow:hidden;}
  .faq-q{
    width:100%;text-align:left;background:none;border:none;color:var(--text);
    font-family:inherit;font-size:14.5px;font-weight:700;
    padding:16px 18px;cursor:pointer;display:flex;gap:10px;align-items:flex-start;
  }
  .faq-q::before{content:"Q";color:var(--accent);font-weight:900;flex-shrink:0;}
  .faq-a{padding:0 18px 16px 40px;font-size:13.5px;color:var(--muted);}
  .faq-item.open .faq-q{color:var(--accent);}

  /* ---------- reviews ---------- */
  .review-wall{columns:3;column-gap:16px;}
  .review{
    break-inside:avoid;margin-bottom:16px;padding:18px;
    border-radius:16px;border:1px solid var(--line);
    background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  }
  .review p{font-size:13.5px;color:#d0d7e7;}
  .review footer{margin-top:12px;display:flex;justify-content:space-between;font-size:12px;color:#8a94ab;}
  .review .stars{color:#ffd166;letter-spacing:2px;}

  /* ---------- privacy / creator / community ---------- */
  .split{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:stretch;}
  .panel-box{
    background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:26px;
  }
  .panel-box h3{font-size:18px;margin-bottom:10px;}
  .check-list{display:grid;gap:10px;margin-top:14px;}
  .check-list li{
    list-style:none;font-size:13.5px;color:#c4ccdd;
    padding-left:26px;position:relative;
  }
  .check-list li::before{
    content:"✓";position:absolute;left:0;top:0;color:var(--accent);font-weight:800;
  }
  .creator-card{
    border-radius:22px;padding:26px;border:1px solid rgba(139,124,255,.4);
    background:linear-gradient(150deg,rgba(139,124,255,.22),rgba(255,123,168,.12));
  }
  .creator-card h3{font-size:19px;margin-bottom:8px;}
  .creator-stats{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0;}
  .creator-stats div{
    flex:1 1 120px;background:rgba(10,13,20,.5);border:1px solid var(--line);
    border-radius:12px;padding:10px 12px;font-size:12.5px;color:var(--muted);
  }
  .creator-stats strong{display:block;color:var(--text);font-size:14px;}
  .community-list{display:grid;gap:12px;margin-top:14px;}
  .community-item{
    display:flex;gap:12px;align-items:flex-start;padding:14px;
    border-radius:12px;background:rgba(255,255,255,.04);border:1px solid var(--line);
    font-size:13.5px;color:#c9d1e3;
  }
  .community-item b{color:var(--accent);flex-shrink:0;}

  /* ---------- downloads ---------- */
  .download-zone{padding-bottom:78px;}
  .dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px;}
  .dl-card{
    border-radius:18px;padding:22px;border:1px solid var(--line);
    background:linear-gradient(160deg,var(--panel-2),var(--panel));
    display:flex;flex-direction:column;gap:6px;
  }
  .dl-card b{font-size:16px;}
  .dl-card small{font-size:12.5px;color:var(--muted);margin-bottom:10px;}
  .dl-card .btn{margin-top:auto;justify-content:center;}

  /* ---------- footer ---------- */
  .site-footer{
    border-top:1px solid var(--line);background:rgba(8,10,16,.7);
    padding:28px 0;font-size:12.5px;color:#7e889e;
  }
  .footer-inner{display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center;justify-content:space-between;}
  .footer-inner p{max-width:640px;line-height:1.7;}
  .footer-inner a{color:#93a0bb;border-bottom:1px dashed rgba(147,160,187,.4);}
  .footer-inner a:hover{color:var(--accent);}
  .footer-meta{display:flex;flex-wrap:wrap;gap:6px 18px;align-items:center;font-size:12px;}

  /* ---------- responsive ---------- */
  @media (max-width:1024px){
    .hero-grid{grid-template-columns:1fr;gap:30px;}
    .device-stage{min-height:320px;}
    .chart-grid{grid-template-columns:repeat(3,1fr);}
    .ai-layout{grid-template-columns:1fr;}
    .steps{grid-template-columns:repeat(2,1fr);}
    .review-wall{columns:2;}
    .dl-grid{grid-template-columns:repeat(2,1fr);}
  }
  @media (max-width:768px){
    section{padding:48px 0;}
    .hero{padding:36px 0 48px;}
    .nav-bar{height:58px;gap:10px;}
    .brand img{height:30px;width:30px;}
    .brand span{font-size:16px;}
    .nav-links a{font-size:13px;padding:6px 9px;}
    .device-stage{min-height:270px;gap:8px;}
    .phone{width:104px;border-radius:18px;padding:5px;}
    .phone img{border-radius:14px;}
    .phone.p2{transform:translateY(-20px) scale(1.03);}
    .chart-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
    .faq-list{grid-template-columns:1fr;}
    .review-wall{columns:1;}
    .split{grid-template-columns:1fr;}
    .steps{grid-template-columns:1fr;}
    .dl-grid{grid-template-columns:1fr;}
    .steps-wrap{padding:26px 18px;}
    .panel-box,.creator-card{padding:20px;}
    .btn{padding:12px 18px;font-size:14px;}
    .footer-inner{flex-direction:column;align-items:flex-start;}
  }