:root{
      --bg:#f6fbff;
      --bg2:#eef6ff;
      --card:#ffffff;
      --text:#10233a;
      --muted:#5c6f86;
      --line:#dce8f5;
      --brand:#1366ff;
      --brand2:#00c2ff;
      --brand3:#7c5cff;
      --accent:#12b76a;
      --warn:#ffb347;
      --shadow:0 18px 50px rgba(16,35,58,.10);
      --shadow2:0 10px 28px rgba(19,102,255,.14);
      --radius:20px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(19,102,255,.10), transparent 28%),
        radial-gradient(circle at 85% 15%, rgba(0,194,255,.12), transparent 24%),
        linear-gradient(180deg, #fafdff 0%, #f3f8ff 45%, #f7fbff 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    header{
      position:sticky;top:0;z-index:80;
      backdrop-filter:blur(16px);
      background:rgba(246,251,255,.82);
      border-bottom:1px solid rgba(220,232,245,.9);
    }
    .topbar{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}
    .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:#fff;padding:4px;box-shadow:0 8px 24px rgba(16,35,58,.08)}
    .brand strong{display:block;font-size:18px;letter-spacing:.4px}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
    nav{display:flex;align-items:center;gap:18px}
    .nav-links{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
    .nav-links a{font-size:14px;color:var(--muted);padding:8px 10px;border-radius:999px;transition:.2s ease}
    .nav-links a:hover,.nav-links a.active{color:var(--brand);background:rgba(19,102,255,.08)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:1px solid transparent;border-radius:999px;padding:12px 18px;
      font-weight:700;font-size:14px;cursor:pointer;transition:.22s ease;
      box-shadow:none;white-space:nowrap
    }
    .btn-primary{color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand2));box-shadow:var(--shadow2)}
    .btn-secondary{color:var(--brand);background:#fff;border-color:#cfe0ff}
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
    main{padding-bottom:24px}
    section{padding:72px 0}
    .hero{padding:28px 0 54px;position:relative;overflow:hidden}
    .hero::before,.hero::after{
      content:"";position:absolute;border-radius:50%;filter:blur(8px);pointer-events:none
    }
    .hero::before{width:260px;height:260px;background:radial-gradient(circle, rgba(19,102,255,.18), transparent 68%);right:-60px;top:10px}
    .hero::after{width:220px;height:220px;background:radial-gradient(circle, rgba(124,92,255,.18), transparent 66%);left:-60px;bottom:-30px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:26px;align-items:stretch}
    .hero-copy,.hero-panel,.card,.metric,.review,.faq-item,.article,.form-wrap,.compare-wrap,.timeline-item,.benefit,.price-card{
      background:rgba(255,255,255,.86);border:1px solid rgba(220,232,245,.9);border-radius:var(--radius);box-shadow:var(--shadow)
    }
    .hero-copy{padding:34px 30px;position:relative}
    .kicker{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:700;font-size:13px;background:rgba(19,102,255,.08);padding:8px 12px;border-radius:999px}
    h1{margin:18px 0 14px;font-size:clamp(32px,4vw,56px);line-height:1.06;letter-spacing:-.02em}
    .lead{font-size:17px;line-height:1.85;color:var(--muted);max-width:62ch;margin:0}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:18px}
    .mini{
      padding:14px;border-radius:16px;background:linear-gradient(180deg, rgba(19,102,255,.06), rgba(0,194,255,.04));
      border:1px solid rgba(19,102,255,.10)
    }
    .mini strong{display:block;font-size:18px}
    .mini span{display:block;font-size:12px;color:var(--muted);margin-top:6px;line-height:1.45}
    .hero-panel{padding:24px;display:flex;flex-direction:column;gap:16px;justify-content:space-between}
    .hero-panel .panel-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
    .badge{display:inline-flex;align-items:center;gap:7px;padding:8px 12px;border-radius:999px;background:#f0f7ff;color:var(--brand);font-weight:700;font-size:12px}
    .stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .metric{padding:18px}
    .metric .num{font-size:26px;font-weight:800;line-height:1}
    .metric .txt{margin-top:8px;font-size:13px;color:var(--muted);line-height:1.5}
    .visual{
      border-radius:18px;padding:18px;background:
        linear-gradient(135deg, rgba(19,102,255,.12), rgba(124,92,255,.12)),
        linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.78));
      border:1px solid rgba(19,102,255,.10);
      overflow:hidden;position:relative;min-height:200px
    }
    .visual::before,.visual::after{
      content:"";position:absolute;border-radius:999px;filter:blur(1px);opacity:.95
    }
    .visual::before{width:110px;height:110px;right:10px;top:18px;background:radial-gradient(circle, rgba(18,183,106,.5), rgba(18,183,106,.06) 70%, transparent 72%)}
    .visual::after{width:160px;height:160px;left:-20px;bottom:-36px;background:radial-gradient(circle, rgba(0,194,255,.5), rgba(0,194,255,.06) 70%, transparent 72%)}
    .orb{position:absolute;border-radius:50%;background:linear-gradient(135deg, rgba(19,102,255,.92), rgba(0,194,255,.86));box-shadow:0 0 30px rgba(19,102,255,.35)}
    .orb.o1{width:22px;height:22px;left:18px;top:18px}
    .orb.o2{width:12px;height:12px;left:58px;top:58px}
    .orb.o3{width:14px;height:14px;right:26px;bottom:30px}
    .flow-card{position:absolute;left:18px;right:18px;bottom:18px;padding:16px;border-radius:16px;background:rgba(255,255,255,.82);border:1px solid rgba(220,232,245,.9)}
    .flow-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.7}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:22px}
    .section-head h2{margin:0;font-size:clamp(24px,2.5vw,36px)}
    .section-head p{margin:0;color:var(--muted);max-width:62ch;line-height:1.75}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .card{padding:22px}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.75}
    .icon{
      width:46px;height:46px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px;
      background:linear-gradient(135deg, rgba(19,102,255,.16), rgba(124,92,255,.14));color:var(--brand);font-size:22px
    }
    .tags{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;border:1px solid rgba(19,102,255,.12);background:#fff;color:#21415d;font-size:13px}
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .step{
      padding:22px;border-radius:18px;background:linear-gradient(180deg,#fff, #f8fbff);border:1px solid var(--line);position:relative
    }
    .step .idx{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand3));color:#fff;font-weight:800;margin-bottom:14px}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:880px}
    th,td{padding:16px 14px;text-align:left;border-bottom:1px solid #edf3fa;vertical-align:top}
    th{background:#f7fbff;color:#18314f;font-size:14px}
    td{color:var(--muted);font-size:14px;line-height:1.7}
    .highlight{color:#0e3f8a;font-weight:800}
    .rating{
      display:flex;align-items:center;gap:8px;flex-wrap:wrap
    }
    .stars{color:#ffb400;letter-spacing:1px;font-size:18px}
    .split{
      display:grid;grid-template-columns:1.05fr .95fr;gap:16px;align-items:stretch
    }
    .compare-wrap,.form-wrap{padding:24px}
    .compare-score{
      display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:16px 0 18px
    }
    .score-box{padding:18px;border-radius:16px;background:linear-gradient(180deg, rgba(19,102,255,.06), rgba(255,255,255,.8));border:1px solid rgba(19,102,255,.10)}
    .score-box strong{display:block;font-size:28px}
    .score-box span{display:block;color:var(--muted);margin-top:6px;font-size:13px}
    .timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .timeline-item{padding:20px;position:relative}
    .timeline-item .stepno{font-size:13px;color:var(--brand);font-weight:800;margin-bottom:10px}
    .timeline-item h3{margin:0 0 10px;font-size:17px}
    .timeline-item p{margin:0;color:var(--muted);line-height:1.75}
    .reviews{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .review{padding:20px}
    .review .meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
    .review .role{font-size:13px;color:var(--brand);font-weight:800}
    .review p{margin:0;color:var(--muted);line-height:1.8}
    .article-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .article{padding:20px}
    .article .date{font-size:12px;color:var(--muted);margin-bottom:10px}
    .article h3{margin:0 0 10px;font-size:17px}
    .article a.more{display:inline-flex;margin-top:12px;color:var(--brand);font-weight:700}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    label{display:block;font-size:13px;font-weight:700;color:#24415e;margin-bottom:8px}
    input,select,textarea{
      width:100%;border:1px solid #cfe0f2;background:#fff;border-radius:14px;padding:14px 14px;
      font:inherit;color:var(--text);outline:none;transition:.2s ease
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(19,102,255,.7);box-shadow:0 0 0 4px rgba(19,102,255,.10)}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px;align-items:center}
    .small{font-size:13px;color:var(--muted);line-height:1.7}
    .faq-list{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%;padding:18px 20px;border:none;background:transparent;color:var(--text);font:inherit;
      display:flex;align-items:center;justify-content:space-between;gap:18px;cursor:pointer;text-align:left
    }
    .faq-q span{font-weight:800}
    .faq-q em{font-style:normal;color:var(--brand);font-size:22px;line-height:1}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 20px}
    .faq-a p{margin:0 0 18px;color:var(--muted);line-height:1.8}
    .faq-item.open .faq-a{max-height:200px}
    .faq-item.open .faq-q em{transform:rotate(45deg)}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:90;display:flex;flex-direction:column;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand2));
      color:#fff;box-shadow:0 16px 34px rgba(19,102,255,.25);border:none;cursor:pointer;font-size:20px
    }
    .float-contact{
      width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:#fff;border:1px solid var(--line);
      box-shadow:0 10px 26px rgba(16,35,58,.12)
    }
    .footer-top{padding-top:18px}
    footer{padding:30px 0 36px;border-top:1px solid rgba(220,232,245,.9);background:#f7fbff;color:#17324f}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr 1fr;gap:18px}
    .footer-grid p,.footer-grid a,.footer-grid li{color:#5a7088;line-height:1.8}
    .links{display:flex;flex-wrap:wrap;gap:10px}
    .links a{padding:8px 12px;border-radius:999px;border:1px solid #d8e7f7;background:#fff}
    .back-top{position:fixed;left:18px;bottom:18px;z-index:90}
    .service-strip{display:flex;flex-wrap:wrap;gap:10px}
    .service-strip .chip{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid rgba(19,102,255,.12);color:#24415e;font-size:13px}
    .scroll-reveal{opacity:0;transform:translateY(18px);transition:opacity .55s ease, transform .55s ease}
    .scroll-reveal.in{opacity:1;transform:none}
    .mobile-only{display:none}
    @media (max-width: 1080px){
      .hero-grid,.split,.footer-grid,.grid-4,.grid-3,.grid-2,.reviews,.article-list,.timeline,.steps{grid-template-columns:1fr 1fr}
      .hero-points{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-toggle{display:inline-flex}
      nav.open .nav-links{
        display:flex;position:absolute;left:16px;right:16px;top:68px;flex-direction:column;align-items:stretch;
        padding:14px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)
      }
      .nav-links a{padding:12px 14px}
    }
    @media (max-width: 720px){
      section{padding:58px 0}
      .container{width:min(var(--container), calc(100% - 24px))}
      .hero-copy,.hero-panel,.card,.metric,.review,.faq-item,.article,.form-wrap,.compare-wrap,.timeline-item,.benefit,.price-card{border-radius:18px}
      .hero-grid,.split,.footer-grid,.grid-4,.grid-3,.grid-2,.reviews,.article-list,.timeline,.steps,.compare-score,.form-grid{grid-template-columns:1fr}
      .topbar{padding:12px 0}
      .brand strong{font-size:16px}
      .brand span{display:none}
      .hero-copy{padding:24px}
      h1{font-size:30px}
      .lead{font-size:15px}
      .hero-actions{flex-direction:column}
      .btn{width:100%}
      .compare-wrap,.form-wrap{padding:20px}
      .mobile-only{display:block}
      .desktop-only{display:none}
    }