:root{
      --bg:#f7f9fc;
      --bg2:#eef4ff;
      --card:#ffffff;
      --text:#17324d;
      --muted:#5f7288;
      --line:#dbe5f0;
      --brand:#2a6df5;
      --brand2:#ff6a3d;
      --brand3:#14b8a6;
      --shadow:0 18px 45px rgba(27,53,84,.08);
      --radius:22px;
      --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;background:linear-gradient(180deg,var(--bg2),#fff 360px,var(--bg));color:var(--text);line-height:1.6}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{max-width:var(--container);margin:0 auto;padding:0 18px}
    .topbar{position:sticky;top:0;z-index:50;background:rgba(247,249,252,.84);backdrop-filter:blur(14px);border-bottom:1px solid rgba(219,229,240,.8)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:74px}
    .brand{display:flex;align-items:center;gap:12px;font-weight:800;color:var(--text)}
    .brand img{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;border:1px solid var(--line)}
    .brand span{font-size:1.02rem}
    .nav-links{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:.95rem;color:var(--muted);padding:8px 10px;border-radius:999px;transition:.25s}
    .nav-links a:hover,.nav-links a:focus{background:rgba(42,109,245,.08);color:var(--brand)}
    .nav-cta{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;cursor:pointer;transition:.25s;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),#5a8dff);color:#fff;box-shadow:0 12px 30px rgba(42,109,245,.25)}
    .btn-secondary{background:#fff;color:var(--text);border-color:var(--line)}
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px}
    .hero{padding:34px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.22fr .78fr;gap:22px;align-items:stretch}
    .hero-main{background:linear-gradient(135deg,#fff 0%,#fff7f2 100%);border:1px solid rgba(219,229,240,.9);border-radius:30px;padding:32px;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .hero-main:before,.hero-main:after{content:"";position:absolute;border-radius:50%;filter:blur(8px);opacity:.22;pointer-events:none}
    .hero-main:before{width:220px;height:220px;background:radial-gradient(circle,var(--brand) 0%, transparent 72%);top:-60px;right:-70px}
    .hero-main:after{width:180px;height:180px;background:radial-gradient(circle,var(--brand2) 0%, transparent 72%);bottom:-60px;left:-60px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(42,109,245,.08);color:var(--brand);padding:7px 12px;border-radius:999px;font-weight:700;font-size:.92rem}
    h1{margin:16px 0 12px;font-size:clamp(2rem,5vw,3.7rem);line-height:1.08;letter-spacing:-.03em}
    .lead{margin:0;max-width:44rem;color:var(--muted);font-size:1.02rem}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .mini{background:rgba(255,255,255,.76);border:1px solid rgba(219,229,240,.95);border-radius:18px;padding:14px}
    .mini strong{display:block;font-size:1.05rem}
    .mini span{color:var(--muted);font-size:.92rem}
    .hero-side{display:grid;gap:14px}
    .side-card{background:rgba(255,255,255,.86);border:1px solid rgba(219,229,240,.95);border-radius:24px;padding:20px;box-shadow:var(--shadow)}
    .side-card h3{margin:0 0 10px;font-size:1.12rem}
    .stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .stat{padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff,#f6f9ff);border:1px solid var(--line)}
    .stat b{display:block;font-size:1.45rem}
    .stat small{color:var(--muted)}
    section{padding:18px 0}
    .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:clamp(1.4rem,3vw,2.2rem)}
    .section-head p{margin:0;color:var(--muted);max-width:58ch}
    .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:var(--card);border:1px solid rgba(219,229,240,.95);border-radius:var(--radius);padding:22px;box-shadow:0 10px 28px rgba(24,48,77,.05);transition:.25s}
    .card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .icon{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(42,109,245,.12),rgba(20,184,166,.12));color:var(--brand);font-size:1.15rem;font-weight:800}
    .card h3{margin:14px 0 8px;font-size:1.05rem}
    .card p,.card li,.muted{color:var(--muted)}
    .tags{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--text);font-size:.93rem}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{position:relative;padding-top:6px}
    .step .num{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--brand),#7ea7ff);color:#fff;font-weight:800;margin-bottom:12px}
    .table-wrap{overflow:auto;border:1px solid var(--line);border-radius:22px;background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px 14px;text-align:left;border-bottom:1px solid #edf2f7;vertical-align:top}
    th{background:#f5f8ff;color:var(--text);font-size:.95rem}
    tr:last-child td{border-bottom:none}
    .score{font-size:1.2rem;font-weight:800;color:var(--brand)}
    .badge{display:inline-flex;align-items:center;gap:6px;padding:7px 11px;border-radius:999px;background:rgba(20,184,166,.1);color:#0f766e;font-weight:700;font-size:.88rem}
    .timeline{display:grid;gap:14px}
    .time-item{display:grid;grid-template-columns:140px 1fr;gap:14px;align-items:start;padding:16px;border-radius:20px;background:#fff;border:1px solid var(--line)}
    .time-item b{color:var(--brand)}
    .case{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .article-list{display:grid;gap:12px}
    .article{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px;border:1px solid var(--line);border-radius:18px;background:#fff}
    .article span{color:var(--muted);font-size:.92rem}
    details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:0 18px;box-shadow:0 8px 20px rgba(24,48,77,.04)}
    details+details{margin-top:12px}
    summary{cursor:pointer;list-style:none;padding:18px 0;font-weight:700;color:var(--text)}
    summary::-webkit-details-marker{display:none}
    details p{margin:0 0 18px;color:var(--muted)}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review{padding:20px;background:linear-gradient(180deg,#fff,#f8fbff);border:1px solid var(--line);border-radius:22px}
    .review .role{display:block;color:var(--brand);font-weight:700;margin-bottom:8px}
    .price-box{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price{padding:20px;border-radius:22px;border:1px solid var(--line);background:#fff}
    .price strong{font-size:1.8rem;display:block;margin:8px 0;color:var(--text)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    input,select,textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:var(--text);outline:none;transition:.2s}
    input:focus,select:focus,textarea:focus{border-color:rgba(42,109,245,.55);box-shadow:0 0 0 4px rgba(42,109,245,.08)}
    textarea{min-height:120px;resize:vertical}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:14px}
    .footer{padding:28px 0 32px;border-top:1px solid rgba(219,229,240,.95);background:#f8fbff;color:var(--text)}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .footer a{color:var(--brand)}
    .small{font-size:.93rem;color:var(--muted)}
    .float-tools{position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px}
    .float-tools a,.float-tools button{width:48px;height:48px;border-radius:16px;border:1px solid var(--line);background:#fff;display:grid;place-items:center;box-shadow:var(--shadow);cursor:pointer;color:var(--brand);font-weight:800}
    .fade-in{opacity:0;transform:translateY(14px);transition:.7s ease}
    .fade-in.show{opacity:1;transform:none}
    .mobile-only{display:none}
    .kefu{display:grid;grid-template-columns:120px 1fr;gap:14px;align-items:center}
    .kefu img{width:120px;border-radius:18px;border:1px solid var(--line);background:#fff;padding:8px}
    .gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .gallery img{border-radius:18px;border:1px solid var(--line);background:#fff;aspect-ratio:16/10;object-fit:cover}
    .cover-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .cover-grid img{border-radius:18px;border:1px solid var(--line);background:#fff;aspect-ratio:4/3;object-fit:cover}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.reviews,.case,.footer-grid,.price-box,.workflow,.gallery,.cover-grid{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .time-item{grid-template-columns:1fr}
      .nav-links,.nav-cta{display:none}
      .menu-btn{display:inline-flex}
      .nav-open .nav-links,.nav-open .nav-cta{display:flex}
      .nav-open .nav{flex-wrap:wrap;padding-bottom:14px}
      .nav-open .nav-links{width:100%;justify-content:flex-start}
      .nav-open .nav-cta{width:100%;display:flex;justify-content:flex-start;flex-wrap:wrap}
      .mobile-only{display:block}
      .form-grid{grid-template-columns:1fr}
    }