:root{
      --bg:#f7f8fc;
      --bg2:#eef3ff;
      --card:#ffffff;
      --text:#182033;
      --muted:#5c6783;
      --line:#e4e9f4;
      --brand:#5b66ff;
      --brand2:#7d5cff;
      --accent:#13b7a6;
      --warm:#ff9f68;
      --shadow:0 18px 50px rgba(27,40,88,.10);
      --shadow2:0 10px 24px rgba(27,40,88,.08);
      --radius:22px;
      --radius2:16px;
      --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", sans-serif;
      color:var(--text);
      background:
        radial-gradient(900px 480px at 12% 8%, rgba(91,102,255,.13), transparent 55%),
        radial-gradient(780px 420px at 88% 12%, rgba(19,183,166,.12), transparent 55%),
        linear-gradient(180deg, #ffffff 0%, #f6f8ff 34%, #f4f7fc 100%);
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .topbar{
      position:sticky;top:0;z-index:50;
      backdrop-filter: blur(12px);
      background:rgba(255,255,255,.75);
      border-bottom:1px solid rgba(228,233,244,.85);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:18px;
      min-height:76px;
    }
    .brand{display:flex;align-items:center;gap:12px;font-weight:800}
    .brand .ai-page-logo{width:44px;height:44px;border-radius:12px;object-fit:contain;background:#fff;box-shadow:var(--shadow2);padding:6px}
    .brand .name{display:flex;flex-direction:column;line-height:1.1}
    .brand .name strong{font-size:18px;letter-spacing:.5px}
    .brand .name span{font-size:12px;color:var(--muted);font-weight:600}
    .menu-toggle{
      display:none;border:1px solid var(--line);background:#fff;color:var(--text);
      border-radius:14px;padding:10px 12px;font-weight:700;box-shadow:var(--shadow2)
    }
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#34415f;font-weight:650;padding:9px 0;position:relative}
    .nav-links a::after{
      content:"";position:absolute;left:0;bottom:3px;width:0;height:2px;border-radius:99px;background:linear-gradient(90deg,var(--brand),var(--accent));transition:.28s ease
    }
    .nav-links a:hover::after{width:100%}
    .home-link{
      color:#fff !important;background:linear-gradient(135deg,var(--brand),var(--brand2));
      padding:10px 16px !important;border-radius:999px;box-shadow:0 10px 22px rgba(91,102,255,.22)
    }
    .home-link::after{display:none}
    .hero{padding:34px 0 16px}
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch
    }
    .hero-panel{
      position:relative;overflow:hidden;border-radius:30px;background:
        linear-gradient(135deg, rgba(255,255,255,.94), rgba(243,247,255,.92));
      border:1px solid rgba(222,228,243,.95);box-shadow:var(--shadow);padding:32px
    }
    .hero-panel::before,.hero-panel::after{
      content:"";position:absolute;border-radius:50%;filter:blur(2px);pointer-events:none
    }
    .hero-panel::before{width:260px;height:260px;background:radial-gradient(circle, rgba(91,102,255,.22), transparent 68%);right:-90px;top:-70px}
    .hero-panel::after{width:180px;height:180px;background:radial-gradient(circle, rgba(19,183,166,.18), transparent 68%);left:-60px;bottom:-70px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      background:rgba(91,102,255,.09);color:#3f4ddb;border:1px solid rgba(91,102,255,.12);
      border-radius:999px;padding:8px 14px;font-size:13px;font-weight:700
    }
    h1{margin:16px 0 14px;font-size:clamp(32px,5vw,52px);line-height:1.06;letter-spacing:-.5px}
    .hero p{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:56ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border-radius:999px;padding:13px 18px;font-weight:800;border:1px solid transparent;transition:.25s ease
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 14px 28px rgba(91,102,255,.22)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px);box-shadow:0 18px 28px rgba(27,40,88,.12)}
    .hero-meta{
      display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:26px
    }
    .meta-box{
      background:rgba(255,255,255,.76);border:1px solid rgba(223,228,244,.98);border-radius:18px;padding:15px 14px
    }
    .meta-box strong{display:block;font-size:18px}
    .meta-box span{display:block;margin-top:6px;color:var(--muted);font-size:13px;line-height:1.45}
    .side-stack{display:grid;gap:14px}
    .side-card{
      background:rgba(255,255,255,.9);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow2);padding:22px
    }
    .side-card h2,.section-title h2{margin:0 0 10px;font-size:26px}
    .side-card p,.section-desc{margin:0;color:var(--muted);line-height:1.8}
    .badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
    .badge{padding:8px 10px;border-radius:999px;background:#f2f5ff;border:1px solid #e2e7fb;color:#44506e;font-size:12px;font-weight:700}
    .metrics{padding:22px 0 6px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .metric{
      background:linear-gradient(180deg,#fff, #fbfcff);border:1px solid var(--line);border-radius:22px;
      padding:20px;box-shadow:var(--shadow2);transition:.25s ease
    }
    .metric:hover,.card:hover,.review:hover,.case:hover{transform:translateY(-4px)}
    .metric strong{display:block;font-size:28px;letter-spacing:-.5px}
    .metric span{display:block;margin-top:8px;color:var(--muted);line-height:1.55}
    .section{padding:42px 0 8px}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:20px}
    .section-title .tag{font-size:13px;font-weight:800;color:#4150df}
    .section-title h2{font-size:30px}
    .section-desc{max-width:72ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .card{
      background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow2);transition:.25s ease
    }
    .card h3{margin:0 0 10px;font-size:18px}
    .card p{margin:0;color:var(--muted);line-height:1.75}
    .icon{
      width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(91,102,255,.12),rgba(19,183,166,.10));border:1px solid rgba(91,102,255,.12);margin-bottom:14px;
      color:#3e4ddf;font-weight:900
    }
    .timeline{display:grid;gap:14px}
    .step{
      display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;
      background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px
    }
    .step-num{
      width:38px;height:38px;border-radius:50%;
      display:grid;place-items:center;font-weight:900;color:#fff;
      background:linear-gradient(135deg,var(--brand),var(--accent))
    }
    .step h3{margin:0 0 6px;font-size:18px}
    .step p{margin:0;color:var(--muted);line-height:1.7}
    .table-wrap{overflow:auto;border-radius:22px;border:1px solid var(--line);box-shadow:var(--shadow2);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:16px 14px;border-bottom:1px solid #edf1f8;text-align:left;vertical-align:top}
    th{background:linear-gradient(180deg,#f8faff,#f4f7ff);font-size:14px}
    td{color:#2e3b58;line-height:1.7}
    .rating{
      background:linear-gradient(135deg,rgba(91,102,255,.12),rgba(19,183,166,.10));
      border:1px solid rgba(91,102,255,.16);border-radius:18px;padding:18px
    }
    .stars{color:#ffb400;font-size:20px;letter-spacing:2px}
    .split-note{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .pill{padding:9px 12px;border-radius:999px;background:#f6f8ff;border:1px solid #e4e9f4;font-size:13px;font-weight:700;color:#46506a}
    .tags{display:flex;flex-wrap:wrap;gap:10px}
    .tags .pill{background:#fff}
    .compare-list{display:grid;gap:12px}
    .compare-item{
      display:flex;justify-content:space-between;gap:16px;align-items:center;
      border:1px solid var(--line);border-radius:18px;padding:14px 16px;background:#fff
    }
    .compare-item strong{font-size:15px}
    .compare-item span{color:var(--muted);font-size:13px}
    .form-wrap{
      background:linear-gradient(180deg,#fff, #f8faff);border:1px solid var(--line);border-radius:26px;box-shadow:var(--shadow2);padding:22px
    }
    form{display:grid;gap:14px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    label{display:grid;gap:8px;font-size:14px;font-weight:700;color:#34415f}
    input,select,textarea{
      width:100%;border:1px solid #dfe5f2;background:#fff;color:var(--text);border-radius:14px;
      padding:13px 14px;font:inherit;outline:none;transition:.2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(91,102,255,.55);box-shadow:0 0 0 4px rgba(91,102,255,.10)}
    textarea{min-height:118px;resize:vertical}
    .submit-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
    .submit-row .hint{color:var(--muted);font-size:13px}
    .faq{display:grid;gap:12px}
    details{
      background:#fff;border:1px solid var(--line);border-radius:18px;padding:0 18px;box-shadow:var(--shadow2)
    }
    summary{
      list-style:none;cursor:pointer;padding:16px 0;font-weight:800;display:flex;justify-content:space-between;gap:16px;align-items:center
    }
    summary::-webkit-details-marker{display:none}
    summary::after{content:"+";color:#5a67ff;font-size:20px;font-weight:900}
    details[open] summary::after{content:"–"}
    details p{margin:0 0 16px;color:var(--muted);line-height:1.75}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review{
      background:linear-gradient(180deg,#fff,#fbfcff);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:var(--shadow2);transition:.25s ease
    }
    .review .role{color:#55627f;font-size:13px;font-weight:800}
    .review p{margin:12px 0 0;color:var(--muted);line-height:1.75}
    .review .name{margin-top:16px;font-weight:900}
    .article-list{display:grid;gap:12px}
    .article{
      display:flex;justify-content:space-between;gap:16px;align-items:center;padding:16px 18px;border-radius:18px;background:#fff;border:1px solid var(--line)
    }
    .article span{color:var(--muted);font-size:13px}
    footer{
      margin-top:34px;background:#0e1530;color:#d6def7
    }
    footer a{color:#ffffff}
    .footer-inner{padding:30px 0 18px}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px;align-items:start}
    .footer-grid h3{margin:0 0 12px;font-size:18px;color:#fff}
    .footer-grid p, .footer-grid li, .footer-grid span{color:#b9c4e3;line-height:1.8}
    .footer-grid ul{margin:0;padding:0;list-style:none;display:grid;gap:8px}
    .footer-bottom{margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:#b9c4e3}
    .float-box{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .float-btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--accent));
      color:#fff;box-shadow:0 16px 30px rgba(27,40,88,.22);border:none;cursor:pointer
    }
    .float-contact{
      width:min(280px, calc(100vw - 32px));background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:14px;display:none
    }
    .float-contact.open{display:block}
    .float-contact .qrcode{width:120px;margin:10px auto 8px}
    .float-contact .small{font-size:13px;color:var(--muted);line-height:1.7;text-align:center}
    .backtop{position:fixed;right:16px;bottom:78px;z-index:55;opacity:0;pointer-events:none;transform:translateY(8px);transition:.25s ease}
    .backtop.show{opacity:1;pointer-events:auto;transform:translateY(0)}
    .fade-up{opacity:0;transform:translateY(18px);transition:.6s ease}
    .fade-up.in{opacity:1;transform:translateY(0)}
    .marquee{
      overflow:hidden;border-radius:20px;border:1px solid var(--line);background:rgba(255,255,255,.92);box-shadow:var(--shadow2);padding:12px 0
    }
    .marquee-track{
      display:flex;gap:22px;white-space:nowrap;animation:scroll 24s linear infinite;padding-left:16px
    }
    .marquee-track span{font-size:14px;font-weight:800;color:#3f4d71}
    @keyframes scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
    @media (max-width: 980px){
      .hero-grid,.grid-4,.grid-3,.reviews,.footer-grid,.grid-2,.form-grid{grid-template-columns:1fr}
      .section-title{align-items:flex-start;flex-direction:column}
      .nav-links{
        display:none;position:absolute;left:16px;right:16px;top:78px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start
      }
      .nav-links.open{display:flex}
      .menu-toggle{display:inline-flex}
      .hero-panel{padding:24px}
      .hero-meta{grid-template-columns:1fr}
      .float-box{right:12px;bottom:12px}
    }
    @media (max-width: 560px){
      .container{width:min(var(--container), calc(100% - 24px))}
      .hero{padding-top:22px}
      .hero-panel{border-radius:24px}
      h1{font-size:30px}
      .section{padding-top:34px}
      .metric strong{font-size:24px}
      .article{flex-direction:column;align-items:flex-start}
    }