:root{
      --bg:#0f1020;
      --bg2:#17152f;
      --card:#18172a;
      --card2:#211b3f;
      --line:rgba(255,255,255,.10);
      --text:#f4efff;
      --muted:#c5bdd8;
      --accent:#ff4fd8;
      --accent2:#7c6cff;
      --accent3:#38d5ff;
      --good:#40f0b5;
      --warn:#ffd46d;
      --shadow:0 20px 60px rgba(0,0,0,.30);
      --radius:22px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(255,79,216,.18), transparent 30%),
        radial-gradient(circle at top right, rgba(56,213,255,.14), transparent 28%),
        linear-gradient(180deg, #0d0d1b 0%, #111225 32%, #0f1020 100%);
      min-height:100vh;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .site-shell{position:relative}
    .noise:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background-image:linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
      background-size:48px 48px;
      mask-image:linear-gradient(180deg, rgba(0,0,0,.28), transparent 80%);
      opacity:.35;
      z-index:0;
    }
    header, main, footer{position:relative; z-index:1}
    .topbar{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter:blur(18px);
      background:rgba(10,10,20,.70);
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .nav{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      min-height:72px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand .ai-page-logo{width:42px;height:42px;object-fit:contain;border-radius:12px;background:rgba(255,255,255,.06);padding:5px;border:1px solid rgba(255,255,255,.10)}
    .brand-text{display:flex;flex-direction:column;line-height:1.1;min-width:0}
    .brand-text strong{font-size:16px;letter-spacing:.5px}
    .brand-text span{font-size:12px;color:var(--muted);margin-top:4px}
    .navlinks{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .navlinks a{font-size:13px;color:#ece6fb;opacity:.9}
    .navlinks a:hover{color:#fff}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:1px solid rgba(255,255,255,.12);
      padding:12px 16px;border-radius:999px;
      background:rgba(255,255,255,.05);color:var(--text);
      transition:.25s ease; box-shadow:none;
      cursor:pointer;
    }
    .btn:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.22);box-shadow:0 12px 30px rgba(0,0,0,.22)}
    .btn.primary{
      background:linear-gradient(135deg, var(--accent) 0%, var(--accent2) 55%, var(--accent3) 100%);
      color:#fff;border-color:transparent;
    }
    .btn.ghost{background:rgba(255,255,255,.03)}
    .menu-btn{display:none}
    .hero{
      padding:34px 0 22px;
    }
    .hero-grid{
      display:grid;
      grid-template-columns:1.25fr .75fr;
      gap:20px;
      align-items:stretch;
    }
    .hero-main{
      position:relative;
      padding:34px;
      border-radius:28px;
      background:
        linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03)),
        linear-gradient(135deg, rgba(255,79,216,.14), rgba(124,108,255,.12) 44%, rgba(56,213,255,.10));
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .hero-main:before,.hero-main:after{
      content:"";position:absolute;border-radius:999px;filter:blur(2px);opacity:.8;pointer-events:none
    }
    .hero-main:before{width:180px;height:180px;right:-40px;top:-40px;background:radial-gradient(circle, rgba(255,79,216,.55), transparent 70%)}
    .hero-main:after{width:240px;height:240px;left:-90px;bottom:-100px;background:radial-gradient(circle, rgba(56,213,255,.28), transparent 70%)}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      color:#ffe1fb;background:rgba(255,79,216,.13);
      border:1px solid rgba(255,79,216,.24);
      padding:8px 14px;border-radius:999px;font-size:13px
    }
    h1{font-size:clamp(32px, 5vw, 58px);line-height:1.05;margin:18px 0 14px;letter-spacing:-.02em}
    .hero p{color:var(--muted);font-size:16px;line-height:1.8;max-width:62ch;margin:0}
    .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:24px}
    .mini-card{
      padding:16px;border-radius:18px;background:rgba(8,10,20,.30);border:1px solid rgba(255,255,255,.08)
    }
    .mini-card strong{display:block;font-size:22px;margin-bottom:6px}
    .mini-card span{font-size:13px;color:var(--muted)}
    .hero-side{
      display:grid;gap:16px;
    }
    .glass-card{
      padding:22px;border-radius:24px;background:rgba(18,17,36,.75);border:1px solid rgba(255,255,255,.09);box-shadow:var(--shadow)
    }
    .glass-card h2,.section-title h2{margin:0 0 10px;font-size:24px}
    .glass-card p,.section-desc{margin:0;color:var(--muted);line-height:1.8}
    .home-link{
      display:inline-flex;align-items:center;justify-content:center;
      margin-top:14px;padding:10px 14px;border-radius:14px;
      background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12)
    }
    .stats{
      display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:20px
    }
    .stat{
      background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
      border:1px solid rgba(255,255,255,.09);
      border-radius:22px;padding:20px;box-shadow:var(--shadow)
    }
    .stat b{font-size:30px;display:block}
    .stat span{display:block;color:var(--muted);margin-top:6px;line-height:1.5}
    section{padding:28px 0}
    .section-head{
      display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px
    }
    .section-title h2{font-size:30px}
    .badge{
      display:inline-flex;align-items:center;gap:6px;padding:7px 12px;border-radius:999px;
      color:#ffe8fd;background:rgba(255,79,216,.11);border:1px solid rgba(255,79,216,.18);font-size:12px
    }
    .grid-3,.grid-4,.grid-2{display:grid;gap:16px}
    .grid-3{grid-template-columns:repeat(3,1fr)}
    .grid-4{grid-template-columns:repeat(4,1fr)}
    .grid-2{grid-template-columns:repeat(2,1fr)}
    .card{
      background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
      border:1px solid rgba(255,255,255,.09);
      border-radius:24px;padding:22px;box-shadow:var(--shadow);
      transition:.25s ease
    }
    .card:hover{transform:translateY(-4px);border-color:rgba(255,255,255,.16)}
    .card h3{margin:0 0 10px;font-size:19px}
    .card p,.card li{color:var(--muted);line-height:1.8}
    .list{margin:0;padding-left:18px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{
      padding:9px 12px;border-radius:999px;
      background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);
      color:#f4efff;font-size:13px
    }
    .process{counter-reset:step}
    .step{
      position:relative;padding-top:8px
    }
    .step:before{
      counter-increment:step;
      content:counter(step);
      width:38px;height:38px;border-radius:50%;
      display:grid;place-items:center;
      background:linear-gradient(135deg, var(--accent), var(--accent2));
      color:#fff;font-weight:700;margin-bottom:12px
    }
    .table-wrap{
      overflow:auto;border-radius:24px;border:1px solid rgba(255,255,255,.09);box-shadow:var(--shadow)
    }
    table{
      width:100%;border-collapse:collapse;min-width:920px;background:rgba(18,17,36,.82)
    }
    th,td{padding:16px 14px;text-align:left;border-bottom:1px solid rgba(255,255,255,.08);vertical-align:top}
    th{background:rgba(255,255,255,.04);color:#fff;font-size:14px}
    td{color:var(--muted)}
    .scorebox{
      display:grid;grid-template-columns:repeat(3,1fr);gap:16px
    }
    .score{
      padding:22px;border-radius:24px;background:linear-gradient(135deg, rgba(255,79,216,.10), rgba(124,108,255,.10), rgba(56,213,255,.08));
      border:1px solid rgba(255,255,255,.10)
    }
    .score strong{display:block;font-size:34px}
    .score span{color:var(--muted)}
    details{
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.09);
      border-radius:18px;
      padding:16px 18px
    }
    details+details{margin-top:12px}
    summary{cursor:pointer;font-weight:700}
    summary::-webkit-details-marker{display:none}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .quote{position:relative}
    .quote:before{content:"“";position:absolute;top:-10px;right:18px;font-size:72px;color:rgba(255,255,255,.08);line-height:1}
    .quote .role{margin-top:12px;color:#fff;font-size:14px}
    .articles li{display:flex;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.08)}
    .articles a{color:#fff}
    .articles span{color:var(--muted);font-size:13px;white-space:nowrap}
    .contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
    .form{
      display:grid;gap:12px
    }
    .input, .select, textarea{
      width:100%;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10);
      color:var(--text);
      border-radius:14px;
      padding:14px 14px;
      outline:none;
    }
    textarea{min-height:140px;resize:vertical}
    .input::placeholder, textarea::placeholder{color:#a9a0c0}
    .form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .footer{
      margin-top:8px;
      padding:26px 0 30px;
      border-top:1px solid rgba(255,255,255,.08);
      background:rgba(8,9,18,.66)
    }
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
    .footer a{color:#f0e8ff}
    .footer small,.footer p{color:#cbbde6;line-height:1.8}
    .links{display:flex;flex-wrap:wrap;gap:10px}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .fab{
      width:52px;height:52px;border-radius:50%;
      display:grid;place-items:center;
      background:linear-gradient(135deg, var(--accent), var(--accent2));
      color:#fff;border:0;box-shadow:0 16px 30px rgba(0,0,0,.28);cursor:pointer
    }
    .kefu{
      position:fixed;left:16px;bottom:16px;z-index:60;
      width:min(320px, calc(100vw - 32px));
      background:rgba(16,16,30,.95);
      border:1px solid rgba(255,255,255,.10);
      border-radius:22px;
      box-shadow:var(--shadow);
      overflow:hidden;
      transform:translateY(0);
    }
    .kefu .inner{display:grid;grid-template-columns:96px 1fr;gap:14px;padding:14px}
    .kefu img{width:96px;height:96px;object-fit:cover;border-radius:16px;border:1px solid rgba(255,255,255,.10)}
    .kefu h3{margin:0 0 6px;font-size:16px}
    .kefu p{margin:0;color:var(--muted);font-size:13px;line-height:1.7}
    .hide-mobile{display:block}
    .reveal{animation:fadeUp .7s ease both}
    @keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
    @media (max-width: 980px){
      .hero-grid,.contact-grid,.footer-grid,.grid-4,.grid-3,.reviews,.scorebox,.grid-2,.stats{grid-template-columns:1fr 1fr}
      .hero-main{padding:26px}
      .navlinks{display:none}
      .menu-btn{display:inline-flex}
      .mobile-menu{display:none;padding:0 0 16px}
      .mobile-menu.open{display:block}
      .mobile-menu .navlinks{display:flex;flex-direction:column;align-items:flex-start;gap:12px;padding:14px 0}
    }
    @media (max-width: 680px){
      .hero-grid,.contact-grid,.footer-grid,.grid-4,.grid-3,.reviews,.scorebox,.grid-2,.stats,.hero-points,.form-row{grid-template-columns:1fr}
      .hero{padding-top:22px}
      .hero-main{padding:22px;border-radius:24px}
      .section-head{flex-direction:column;align-items:flex-start}
      .btn{padding:11px 14px}
      .kefu{left:12px;right:12px;width:auto}
      .floating{right:12px;bottom:12px}
      .hide-mobile{display:none}
    }