:root{
      --bg:#0c0f1d;
      --bg2:#10172b;
      --panel:#121a31;
      --panel2:#151f3a;
      --text:#f4f6ff;
      --muted:#b6bfdc;
      --line:rgba(255,255,255,.09);
      --accent:#ff4fd8;
      --accent2:#7c5cff;
      --accent3:#4ce2ff;
      --good:#56f0b3;
      --warn:#ffd36e;
      --shadow:0 20px 60px rgba(7,10,26,.35);
      --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 15% 10%, rgba(255,79,216,.16), transparent 24%),
        radial-gradient(circle at 85% 12%, rgba(76,226,255,.12), transparent 23%),
        radial-gradient(circle at 50% 80%, rgba(124,92,255,.12), transparent 26%),
        linear-gradient(180deg, #0a0d1a 0%, #0d1224 48%, #0b0f1e 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-header{
      position:sticky; top:0; z-index:50;
      backdrop-filter: blur(16px);
      background:rgba(10,14,28,.74);
      border-bottom:1px solid var(--line);
    }
    .nav{
      display:flex; align-items:center; justify-content:space-between; gap:16px;
      padding:14px 0;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand .ai-page-logo{width:40px;height:40px;object-fit:contain;background:rgba(255,255,255,.04);border-radius:12px;padding:6px;border:1px solid var(--line)}
    .brand h2{margin:0;font-size:18px;line-height:1.1}
    .brand p{margin:3px 0 0;color:var(--muted);font-size:12px}
    .nav-links{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{color:#dbe2ff;font-size:13px;padding:8px 10px;border-radius:999px;transition:.2s ease}
    .nav-links a:hover,.nav-links a:focus{background:rgba(255,255,255,.08);color:#fff}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:12px 16px;border-radius:14px;border:1px solid transparent;
      font-weight:700;cursor:pointer;transition:.2s ease;white-space:nowrap
    }
    .btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;box-shadow:0 12px 30px rgba(255,79,216,.18)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(255,79,216,.22)}
    .btn-ghost{background:rgba(255,255,255,.06);border-color:var(--line);color:#fff}
    .btn-ghost:hover{background:rgba(255,255,255,.1);transform:translateY(-1px)}
    .menu-toggle{display:none;background:rgba(255,255,255,.06);border:1px solid var(--line);color:#fff;border-radius:12px;padding:10px 12px}
    .hero{padding:56px 0 24px}
    .hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.section-card,.panel{
      background:linear-gradient(180deg, rgba(18,26,49,.94), rgba(14,20,38,.96));
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
    }
    .hero-main{padding:34px; position:relative; overflow:hidden}
    .hero-main::before,.hero-side::before{
      content:""; position:absolute; inset:auto -20% -30% auto; width:240px; height:240px;
      background:radial-gradient(circle, rgba(255,79,216,.22), transparent 62%);
      pointer-events:none;
    }
    .hero-main::after{
      content:""; position:absolute; right:18px; top:18px; width:150px; height:150px; border-radius:50%;
      border:1px solid rgba(76,226,255,.22); box-shadow:0 0 0 28px rgba(76,226,255,.06), 0 0 0 58px rgba(124,92,255,.04);
      pointer-events:none;
    }
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid var(--line);color:#ecf1ff;font-size:13px}
    h1{margin:18px 0 14px;font-size:clamp(32px,4vw,54px);line-height:1.05;letter-spacing:-.04em}
    .hero p{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:58ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:26px}
    .mini{
      padding:14px;border-radius:18px;background:rgba(255,255,255,.05);border:1px solid var(--line)
    }
    .mini strong{display:block;font-size:18px}
    .mini span{display:block;color:var(--muted);font-size:12px;margin-top:5px;line-height:1.45}
    .hero-side{padding:24px; position:relative; overflow:hidden}
    .side-card{background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:18px;padding:16px;margin-bottom:14px}
    .side-card h3,.section-title{margin:0 0 10px}
    .section-title{font-size:28px;line-height:1.15}
    .muted{color:var(--muted)}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    section{padding:24px 0}
    .section-card{padding:26px}
    .stat{padding:22px;border-radius:18px;background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));border:1px solid var(--line)}
    .stat strong{display:block;font-size:28px}
    .stat span{display:block;color:var(--muted);margin-top:8px;line-height:1.55}
    .service-card,.case-card,.review-card,.article-card,.price-card,.faq-item,.timeline-item,.compare-card,.network-card{
      background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:20px;padding:18px;transition:.22s ease
    }
    .service-card:hover,.case-card:hover,.review-card:hover,.article-card:hover,.price-card:hover,.compare-card:hover,.network-card:hover{transform:translateY(-3px);box-shadow:0 18px 36px rgba(0,0,0,.2)}
    .chip-row{display:flex;flex-wrap:wrap;gap:10px}
    .chip{padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid var(--line);font-size:13px;color:#e8edff}
    .flow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .flow .step{padding:20px;border-radius:18px;background:linear-gradient(180deg, rgba(124,92,255,.12), rgba(255,255,255,.04));border:1px solid var(--line)}
    .step b{display:inline-flex;width:34px;height:34px;border-radius:12px;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--accent),var(--accent2));margin-bottom:12px}
    .step h3{margin:0 0 8px;font-size:18px}
    .step p{margin:0;color:var(--muted);line-height:1.7;font-size:14px}
    .table-wrap{overflow:auto;border:1px solid var(--line);border-radius:18px}
    table{width:100%;border-collapse:collapse;min-width:760px;background:rgba(255,255,255,.03)}
    th,td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:rgba(255,255,255,.06);color:#fff;font-size:14px}
    td{color:#e4e9ff;font-size:14px;line-height:1.65}
    .faq-item{padding:0;overflow:hidden}
    .faq-q{width:100%;padding:18px 18px;background:transparent;border:none;color:#fff;text-align:left;font-size:16px;font-weight:700;display:flex;justify-content:space-between;gap:12px;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 18px;color:var(--muted);line-height:1.75}
    .faq-item.active .faq-a{padding-bottom:18px;max-height:220px}
    .faq-icon{transition:.2s ease}
    .faq-item.active .faq-icon{transform:rotate(45deg)}
    .reviews, .articles {display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px;color:#fff}
    .stars{color:var(--warn);letter-spacing:1px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .form-grid .full{grid-column:1 / -1}
    input,select,textarea{
      width:100%;padding:13px 14px;border-radius:14px;border:1px solid var(--line);background:rgba(8,12,24,.72);color:#fff;outline:none
    }
    textarea{min-height:120px;resize:vertical}
    input::placeholder,textarea::placeholder{color:#8d96ba}
    input:focus,select:focus,textarea:focus{border-color:rgba(76,226,255,.5);box-shadow:0 0 0 4px rgba(76,226,255,.08)}
    .footer{
      margin-top:18px;padding:28px 0 34px;border-top:1px solid var(--line);background:rgba(7,10,20,.92);color:#d9e0ff
    }
    .footer a{color:#ffffff}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .8fr;gap:18px}
    .footer small,.footer p,.footer li{color:#c0c8ea;line-height:1.8}
    .bottom-links{display:flex;flex-wrap:wrap;gap:10px}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:10px
    }
    .float-btn{
      width:48px;height:48px;border-radius:16px;border:1px solid var(--line);
      background:linear-gradient(135deg,rgba(255,79,216,.95),rgba(124,92,255,.95));
      color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow)
    }
    .float-panel{
      position:fixed;right:18px;bottom:76px;z-index:60;width:min(320px, calc(100vw - 36px));
      background:rgba(15,20,37,.98);border:1px solid var(--line);border-radius:20px;padding:16px;box-shadow:var(--shadow);display:none
    }
    .float-panel.show{display:block}
    .float-panel .qr{display:grid;grid-template-columns:92px 1fr;gap:14px;align-items:center}
    .ai-page-image{border-radius:18px;border:1px solid var(--line)}
    .scroll-reveal{opacity:0;transform:translateY(18px);transition:.55s ease}
    .scroll-reveal.in{opacity:1;transform:none}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid var(--line);color:#e7ecff;font-size:13px}
    .compare-band{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .rating{
      padding:20px;border-radius:20px;background:linear-gradient(180deg, rgba(255,79,216,.12), rgba(255,255,255,.04));border:1px solid rgba(255,79,216,.25)
    }
    .rating strong{display:block;font-size:34px}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .network{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .article-card h3,.case-card h3,.review-card h3{margin:0 0 8px;font-size:18px}
    .article-card p,.case-card p,.review-card p,.price-card p,.compare-card p{margin:0;color:var(--muted);line-height:1.75}
    .mobile-only{display:none}
    @media (max-width: 980px){
      .hero-grid,.grid-4,.grid-3,.grid-2,.reviews,.articles,.footer-grid,.timeline,.network,.compare-band,.flow{grid-template-columns:1fr 1fr}
      .hero-main,.hero-side{padding:24px}
      .form-grid{grid-template-columns:1fr}
    }
    @media (max-width: 720px){
      .nav-links,.nav-cta{display:none}
      .menu-toggle{display:inline-flex}
      .nav.open .nav-links,.nav.open .nav-cta{
        display:flex; position:absolute; left:16px; right:16px; top:68px;
        padding:14px; background:rgba(13,18,36,.98); border:1px solid var(--line); border-radius:18px; flex-direction:column; align-items:stretch
      }
      .nav.open .nav-cta{top:auto; bottom:-92px; background:transparent; border:none; padding:0; gap:10px}
      .hero-grid,.grid-4,.grid-3,.grid-2,.reviews,.articles,.footer-grid,.timeline,.network,.compare-band,.flow{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .section-card{padding:20px}
      .section-title{font-size:24px}
      .mobile-only{display:block}
    }