:root{
      --bg:#fbf9f4;
      --bg2:#f5f7ff;
      --card:#ffffff;
      --text:#1f2937;
      --muted:#5b6678;
      --line:#e7e2d8;
      --primary:#4f46e5;
      --primary2:#06b6d4;
      --accent:#ff7a59;
      --accent2:#f59e0b;
      --shadow:0 18px 50px rgba(33, 38, 60, .08);
      --radius:22px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(79,70,229,.09), transparent 28%),
        radial-gradient(circle at 90% 10%, rgba(6,182,212,.08), transparent 22%),
        linear-gradient(180deg, var(--bg), #fff 34%, #f8fbff 100%);
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .site-header{
      position:sticky; top:0; z-index:1000;
      backdrop-filter:saturate(180%) blur(16px);
      background:rgba(251,249,244,.82);
      border-bottom:1px solid rgba(231,226,216,.75);
    }
    .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:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:0 8px 20px rgba(0,0,0,.06);padding:5px}
    .brand-text{min-width:0}
    .brand-text strong{display:block;font-size:18px;letter-spacing:.2px}
    .brand-text span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
    .nav-links{display:flex; flex-wrap:wrap; justify-content:flex-end; gap:10px; align-items:center}
    .nav-links a{
      padding:9px 12px; border-radius:999px; font-size:14px; color:#334155;
      transition:.25s ease; border:1px solid transparent;
    }
    .nav-links a:hover,.nav-links a:focus{background:#fff;border-color:var(--line);box-shadow:0 10px 20px rgba(31,41,55,.05);transform:translateY(-1px)}
    .nav-cta{display:flex; gap:10px; align-items:center}
    .btn{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      border:1px solid transparent; border-radius:14px; padding:12px 18px; font-weight:600;
      transition:.25s ease; cursor:pointer; white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg, var(--primary), #7c3aed); color:#fff; box-shadow:0 16px 28px rgba(79,70,229,.22)}
    .btn-primary:hover{transform:translateY(-2px); box-shadow:0 20px 34px rgba(79,70,229,.27)}
    .btn-secondary{background:#fff; color:#243041; border-color:var(--line)}
    .btn-secondary:hover{transform:translateY(-2px); box-shadow:0 12px 24px rgba(31,41,55,.08)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:11px 14px}
    .hero{
      padding:34px 0 20px;
    }
    .hero-grid{
      display:grid; grid-template-columns: 1.25fr .75fr; gap:22px; align-items:stretch;
    }
    .hero-main,.hero-side,.panel,.card,.quote,.faq-item,.form-box,.compare-box,.timeline,.articles,.case-card,.review-card{
      background:rgba(255,255,255,.92);
      border:1px solid rgba(231,226,216,.9);
      box-shadow:var(--shadow);
    }
    .hero-main{
      border-radius:30px; padding:34px; position:relative; overflow:hidden;
      background:
        linear-gradient(135deg, rgba(79,70,229,.08), rgba(255,255,255,.95) 42%, rgba(6,182,212,.06)),
        rgba(255,255,255,.92);
    }
    .hero-main::before,.hero-main::after{
      content:""; position:absolute; border-radius:999px; pointer-events:none;
      background:linear-gradient(135deg, rgba(255,122,89,.18), rgba(255,122,89,0));
    }
    .hero-main::before{width:180px;height:180px;right:-40px;top:-36px}
    .hero-main::after{width:220px;height:220px;left:-70px;bottom:-90px;background:linear-gradient(135deg, rgba(79,70,229,.12), rgba(79,70,229,0))}
    .eyebrow{
      display:inline-flex; align-items:center; gap:8px; padding:8px 12px; border-radius:999px;
      background:#eef2ff; color:#4338ca; font-size:13px; font-weight:600;
    }
    h1{margin:16px 0 12px; font-size:clamp(30px, 5vw, 54px); line-height:1.08; letter-spacing:-.02em}
    .hero p{margin:0; color:var(--muted); font-size:16px; line-height:1.8}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin:24px 0 18px}
    .hero-points{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:12px; margin-top:20px}
    .point{
      background:rgba(255,255,255,.88); border:1px solid var(--line); border-radius:20px; padding:14px 16px;
    }
    .point strong{display:block; font-size:15px}
    .point span{display:block; color:var(--muted); font-size:13px; margin-top:4px; line-height:1.6}
    .hero-side{border-radius:30px; padding:22px; display:flex; flex-direction:column; gap:14px; background:linear-gradient(180deg, rgba(255,255,255,.95), rgba(247,250,255,.92))}
    .mini-stats{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px}
    .mini-stat{padding:16px; border-radius:20px; background:linear-gradient(180deg, #fff, #f8fbff); border:1px solid var(--line)}
    .mini-stat b{display:block; font-size:22px}
    .mini-stat span{color:var(--muted); font-size:13px}
    .hero-side .badge-row{display:flex; flex-wrap:wrap; gap:8px}
    .chip{padding:7px 10px; border-radius:999px; background:#f3f4f6; color:#374151; font-size:12px; border:1px solid #e5e7eb}
    .section{padding:18px 0}
    .section-head{display:flex; align-items:end; justify-content:space-between; gap:16px; margin-bottom:16px}
    .section-head h2{margin:0; font-size:clamp(24px, 3vw, 34px)}
    .section-head p{margin:0; color:var(--muted); max-width:760px; line-height:1.8}
    .grid-3{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:16px}
    .grid-4{display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:16px}
    .card{border-radius:24px; padding:22px}
    .card h3,.card h4{margin:0 0 10px}
    .card p,.card li{color:var(--muted); line-height:1.75}
    .stat{
      position:relative; overflow:hidden;
      background:linear-gradient(180deg, #fff, #fbfdff);
    }
    .stat .num{font-size:30px; font-weight:800; letter-spacing:-.02em; margin-bottom:4px}
    .stat::after{
      content:""; position:absolute; inset:auto -20px -28px auto; width:110px; height:110px; border-radius:50%;
      background:radial-gradient(circle, rgba(79,70,229,.08), transparent 70%);
    }
    .service-grid{display:grid; grid-template-columns:1fr 1fr; gap:16px}
    .service-card{border-radius:24px; padding:20px; background:linear-gradient(180deg, #fff, #fbfbff); border:1px solid var(--line)}
    .service-card ul{margin:12px 0 0; padding-left:18px}
    .service-card li{margin:8px 0}
    .tag-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .tag-cloud span{padding:9px 12px; border-radius:999px; background:#f8fafc; border:1px solid #e5e7eb; color:#334155; font-size:13px}
    .steps{display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:16px}
    .step{padding:20px; border-radius:24px; background:#fff; border:1px solid var(--line)}
    .step .index{display:inline-flex; width:36px; height:36px; align-items:center; justify-content:center; border-radius:12px; background:linear-gradient(135deg, #eef2ff, #e0f2fe); color:#3730a3; font-weight:700; margin-bottom:12px}
    .table-wrap{overflow:auto; border-radius:24px; border:1px solid var(--line); background:#fff; box-shadow:var(--shadow)}
    table{width:100%; border-collapse:collapse; min-width:760px}
    th,td{padding:16px; border-bottom:1px solid #ece8df; text-align:left; vertical-align:top}
    th{background:#fbfcff; font-size:14px}
    td{color:#334155}
    .rating-box{
      border-radius:26px; padding:24px; background:linear-gradient(135deg, rgba(255,122,89,.08), rgba(79,70,229,.06), #fff);
      border:1px solid var(--line)
    }
    .rating-line{display:flex; flex-wrap:wrap; gap:10px; align-items:center; margin-top:10px}
    .stars{letter-spacing:2px; color:#f59e0b; font-size:20px}
    .review-grid,.case-grid,.article-grid{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:16px}
    .review-card,.case-card{border-radius:24px; padding:20px}
    .review-card .role{color:#4338ca; font-size:13px; font-weight:700}
    .review-card p{margin:10px 0 14px; color:var(--muted); line-height:1.8}
    .review-card .name{font-weight:700}
    .faq-list{display:grid; gap:12px}
    .faq-item{border-radius:20px; overflow:hidden}
    .faq-q{
      width:100%; border:0; background:#fff; color:#1f2937; padding:18px 20px; text-align:left; display:flex; justify-content:space-between; align-items:center; gap:16px; font-size:16px; cursor:pointer
    }
    .faq-a{max-height:0; overflow:hidden; transition:max-height .28s ease, padding .28s ease; padding:0 20px}
    .faq-item.open .faq-a{max-height:180px; padding:0 20px 18px}
    .faq-item.open .faq-q{background:#fbfcff}
    .faq-q span{font-weight:700}
    .form-box{border-radius:28px; padding:24px}
    .form-grid{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px}
    .field{display:flex; flex-direction:column; gap:8px}
    .field label{font-size:14px; font-weight:600; color:#334155}
    .field input,.field select,.field textarea{
      width:100%; border:1px solid #d9e0ea; background:#fff; color:#111827; border-radius:14px; padding:13px 14px; font:inherit; outline:none;
    }
    .field textarea{min-height:120px; resize:vertical; grid-column:1/-1}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:#818cf8; box-shadow:0 0 0 4px rgba(129,140,248,.12)}
    .form-actions{display:flex; flex-wrap:wrap; gap:12px; align-items:center; margin-top:16px}
    .timeline{border-radius:24px; padding:20px}
    .timeline ul{list-style:none; margin:0; padding:0; display:grid; gap:14px}
    .timeline li{display:grid; grid-template-columns:72px 1fr; gap:14px; align-items:start}
    .timeline .time{font-weight:800; color:#4338ca}
    .footer{
      margin-top:18px; padding:26px 0 32px; border-top:1px solid rgba(231,226,216,.85);
      background:linear-gradient(180deg, rgba(255,255,255,.55), rgba(248,250,255,.95));
    }
    .footer-grid{display:grid; grid-template-columns:1.2fr .8fr; gap:18px}
    .footer a{color:#334155}
    .footer a:hover{color:#111827}
    .footer small{color:var(--muted); line-height:1.8}
    .footer-links{display:flex; flex-wrap:wrap; gap:10px}
    .footer-links a{padding:8px 11px; border-radius:999px; background:#fff; border:1px solid var(--line)}
    .floating{
      position:fixed; right:16px; bottom:16px; z-index:999;
      display:flex; flex-direction:column; gap:10px;
    }
    .float-btn{
      display:flex; align-items:center; justify-content:center; width:50px; height:50px; border-radius:16px;
      background:linear-gradient(135deg, var(--primary), #7c3aed); color:#fff; box-shadow:0 16px 26px rgba(79,70,229,.24)
    }
    .float-card{
      position:fixed; right:16px; bottom:78px; width:min(320px, calc(100vw - 32px));
      background:#fff; border:1px solid var(--line); border-radius:22px; box-shadow:var(--shadow);
      padding:16px; display:none;
    }
    .float-card.open{display:block}
    .float-card .contact{display:grid; grid-template-columns:92px 1fr; gap:12px; align-items:center}
    .float-card img{border-radius:14px}
    .scroll-top{display:none}
    .scroll-top.show{display:flex}
    .reveal{opacity:0; transform:translateY(14px); transition:.55s ease}
    .reveal.visible{opacity:1; transform:none}
    .article-grid .card,.case-card{display:flex; flex-direction:column; gap:10px}
    .case-card .meta,.article-grid .meta{color:#6b7280; font-size:13px}
    .note-bar{
      display:flex; flex-wrap:wrap; gap:10px; align-items:center; justify-content:space-between;
      padding:14px 16px; border-radius:18px; background:#fff7ed; border:1px solid #fed7aa; color:#9a3412;
    }
    .anchor-title{display:flex; gap:10px; align-items:center}
    .anchor-title i{width:10px;height:10px;border-radius:999px;background:linear-gradient(135deg,var(--accent),var(--primary2));display:inline-block}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-4,.review-grid,.case-grid,.article-grid,.steps,.service-grid,.footer-grid{grid-template-columns:1fr}
      .hero-points,.mini-stats,.form-grid{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .nav.open .nav-links{
        display:flex; position:absolute; left:16px; right:16px; top:68px; padding:12px; flex-direction:column;
        background:#fff; border:1px solid var(--line); border-radius:20px; box-shadow:var(--shadow); align-items:stretch;
      }
      .nav.open .nav-links a{width:100%; text-align:center}
      .nav.open .nav-cta{display:flex; width:100%; justify-content:space-between; margin-top:10px}
      .nav{position:relative}
      .timeline li{grid-template-columns:1fr}
      .hero-main,.hero-side{padding:22px}
    }
    @media (max-width: 560px){
      .container{width:min(var(--container), calc(100% - 24px))}
      .hero{padding-top:20px}
      .hero-actions .btn{width:100%}
      .nav-cta{display:none}
      .section{padding:14px 0}
      h1{font-size:32px}
      .section-head{align-items:flex-start; flex-direction:column}
    }