:root{
      --bg:#f6f4ef;
      --bg2:#fffaf1;
      --card:#ffffff;
      --text:#1f2a37;
      --muted:#5d6675;
      --primary:#2563eb;
      --primary2:#7c3aed;
      --accent:#f97316;
      --line:#e6e1d8;
      --shadow:0 18px 40px rgba(24,39,75,.08);
      --radius:20px;
      --radius-sm:14px;
      --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(--bg),var(--bg2) 42%,#fff 100%);color:var(--text);line-height:1.65}
    img{display:block;max-width:100%;height:auto}
    a{color:inherit;text-decoration:none}
    .site-shell{position:relative;overflow:hidden}
    .site-shell:before,.site-shell:after{content:"";position:fixed;inset:auto;pointer-events:none;z-index:0;border-radius:999px;filter:blur(8px);opacity:.55}
    .site-shell:before{width:320px;height:320px;top:-120px;right:-120px;background:radial-gradient(circle,rgba(124,58,237,.16),rgba(124,58,237,0) 70%)}
    .site-shell:after{width:420px;height:420px;left:-180px;top:520px;background:radial-gradient(circle,rgba(249,115,22,.12),rgba(249,115,22,0) 68%)}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto;position:relative;z-index:1}
    header{position:sticky;top:0;z-index:50;background:rgba(246,244,239,.84);backdrop-filter:saturate(160%) blur(18px);border-bottom:1px solid rgba(230,225,216,.9)}
    .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 img{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;box-shadow:0 8px 18px rgba(0,0,0,.06)}
    .brand-text{min-width:0}
    .brand-text strong{display:block;font-size:16px;letter-spacing:.2px}
    .brand-text span{display:block;color:var(--muted);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:240px}
    .nav-links{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px 14px;align-items:center}
    .nav-links a{font-size:14px;color:#334155;padding:8px 10px;border-radius:999px;transition:.2s ease}
    .nav-links a:hover{background:#fff;color:var(--primary);box-shadow:0 8px 18px rgba(37,99,235,.08)}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:12px 18px;font-weight:700;font-size:14px;cursor:pointer;transition:.22s ease;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 14px 28px rgba(37,99,235,.25)}
    .btn-primary:hover,.btn-outline:hover{transform:translateY(-2px)}
    .btn-outline{background:#fff;border:1px solid var(--line);color:var(--text)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;cursor:pointer}
    .menu-btn span{display:block;width:18px;height:2px;background:#334155;margin:3px 0;border-radius:2px}
    main{display:block}
    section{padding:68px 0}
    .hero{padding:36px 0 24px}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:22px;align-items:stretch}
    .hero-copy,.hero-panel,.panel-card,.card,.review,.faq-item,.form-wrap,.table-card,.article-card,.compare-card{background:var(--card);border:1px solid rgba(230,225,216,.95);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-copy{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:rgba(37,99,235,.08);color:var(--primary);font-size:13px;font-weight:700}
    h1{margin:18px 0 14px;font-size:clamp(32px,4.6vw,54px);line-height:1.08;letter-spacing:-.02em}
    .hero-copy p{margin:0 0 22px;color:var(--muted);font-size:16px;max-width:60ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:24px}
    .hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .stat{padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff,#fbfaf7);border:1px solid var(--line)}
    .stat strong{display:block;font-size:24px}
    .stat span{display:block;color:var(--muted);font-size:13px;margin-top:4px}
    .hero-panel{padding:22px;display:grid;gap:14px;background:linear-gradient(180deg,#fff, #fffdf8)}
    .panel-card{padding:18px;background:linear-gradient(135deg,rgba(37,99,235,.06),rgba(249,115,22,.05));border-style:dashed}
    .panel-card h3,.card h3,.section-title h2{margin:0}
    .panel-card p,.card p,.muted{color:var(--muted)}
    .mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .mini{padding:14px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .mini strong{display:block;margin-bottom:4px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:22px}
    .section-title h2{font-size:clamp(24px,3vw,36px);line-height:1.15}
    .section-title p{margin:10px 0 0;color:var(--muted);max-width:68ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .card{padding:22px;transition:transform .22s ease, box-shadow .22s ease}
    .card:hover,.review:hover,.article-card:hover,.faq-item:hover{transform:translateY(-4px);box-shadow:0 20px 38px rgba(24,39,75,.12)}
    .icon{width:48px;height:48px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(37,99,235,.12),rgba(124,58,237,.12));color:var(--primary);font-weight:800;margin-bottom:14px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 13px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#334155;font-size:13px}
    .process{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
    .step{position:relative;padding:20px;border-radius:18px;background:linear-gradient(180deg,#fff,#faf7f2);border:1px solid var(--line)}
    .step:after{content:"";position:absolute;right:-10px;top:28px;width:20px;height:2px;background:linear-gradient(90deg,var(--primary),transparent)}
    .step:last-child:after{display:none}
    .step-num{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:12px;background:rgba(249,115,22,.12);color:#c2410c;font-weight:800;margin-bottom:10px}
    .compare-wrap,.faq-list,.article-list,.review-list{display:grid;gap:14px}
    .table-card{overflow:auto}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}
    th{background:#fbfaf7;font-size:14px}
    .badge{display:inline-flex;align-items:center;padding:5px 10px;border-radius:999px;font-size:12px;font-weight:700}
    .badge.good{background:rgba(16,185,129,.12);color:#047857}
    .badge.warn{background:rgba(249,115,22,.12);color:#c2410c}
    .badge.info{background:rgba(37,99,235,.12);color:#1d4ed8}
    .dual{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
    .list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .list li{display:flex;gap:10px;align-items:flex-start;color:#334155}
    .list li:before{content:"•";color:var(--primary);font-weight:900}
    .kpi-strip{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
    .kpi{padding:16px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .kpi strong{display:block;font-size:22px}
    .kpi span{color:var(--muted);font-size:13px}
    .service-map{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .network{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .network .card{padding:18px}
    .review-list{grid-template-columns:repeat(3,1fr)}
    .review small{color:var(--muted)}
    .faq-item{overflow:hidden}
    .faq-q{width:100%;background:#fff;border:0;padding:18px 20px;text-align:left;font-weight:700;font-size:15px;display:flex;justify-content:space-between;gap:16px;cursor:pointer}
    .faq-q span{color:var(--primary);font-weight:900}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;padding:0 20px}
    .faq-item.active .faq-a{max-height:220px;padding-bottom:18px}
    .faq-item.active .faq-q span{transform:rotate(45deg)}
    .article-list{grid-template-columns:repeat(3,1fr)}
    .article-card{padding:18px}
    .article-card h3{font-size:18px;margin:10px 0}
    .form-wrap{padding:24px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:grid;gap:8px}
    label{font-size:14px;font-weight:700;color:#334155}
    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:border-color .18s, box-shadow .18s}
    textarea{min-height:126px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(37,99,235,.5);box-shadow:0 0 0 4px rgba(37,99,235,.08)}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:16px}
    .side-image{display:grid;gap:14px}
    .side-image img{border-radius:18px;border:1px solid var(--line);background:#fff;box-shadow:0 12px 26px rgba(24,39,75,.08)}
    .price-box{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .price{padding:20px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(180deg,#fff,#faf8f4)}
    .price strong{display:block;font-size:28px;margin:8px 0;color:#111827}
    footer{padding:28px 0 34px;border-top:1px solid var(--line);background:#f3efe8;color:#223042}
    footer a{color:#1d4ed8}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr 1fr;gap:20px;align-items:start}
    .footer-grid .card{box-shadow:none}
    .social{display:flex;flex-wrap:wrap;gap:10px}
    .home-link{color:var(--primary);font-weight:700}
    .float-tools{position:fixed;right:18px;bottom:18px;display:grid;gap:10px;z-index:60}
    .float-tools a,.float-tools button{width:48px;height:48px;border-radius:16px;border:1px solid rgba(230,225,216,.98);background:#fff;box-shadow:0 12px 24px rgba(24,39,75,.12);display:grid;place-items:center;cursor:pointer}
    .float-tools a:hover,.float-tools button:hover{transform:translateY(-2px)}
    .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease, transform .6s ease}
    .reveal.show{opacity:1;transform:none}
    .menu-panel{display:none}
    .subtle{font-size:13px;color:var(--muted)}
    .center{text-align:center}
    .section-divider{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);margin:16px 0 0}
    @media (max-width: 1100px){
      .hero-grid,.dual,.service-map,.footer-grid,.article-list,.review-list,.network,.grid-4,.grid-3,.price-box,.kpi-strip{grid-template-columns:repeat(2,1fr)}
      .process{grid-template-columns:repeat(2,1fr)}
      .step:after{display:none}
    }
    @media (max-width: 860px){
      .menu-btn{display:inline-grid}
      .nav-links,.nav-cta{display:none}
      .menu-panel{display:none;padding:0 0 14px}
      .menu-panel.active{display:grid;gap:8px}
      .menu-panel a{padding:12px 14px;border-radius:14px;background:#fff;border:1px solid var(--line)}
      .hero-grid,.dual,.service-map,.footer-grid,.article-list,.review-list,.network,.grid-4,.grid-3,.price-box,.kpi-strip{grid-template-columns:1fr}
      .hero-copy{padding:24px}
      .hero-stats,.mini-grid,.form-grid{grid-template-columns:1fr 1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .process{grid-template-columns:1fr}
    }
    @media (max-width: 560px){
      section{padding:54px 0}
      .container{width:min(var(--container),calc(100% - 22px))}
      .brand-text span{max-width:170px}
      .hero-copy p,.section-title p{font-size:15px}
      .hero-stats,.mini-grid,.form-grid,.kpi-strip{grid-template-columns:1fr}
      .btn{width:100%}
      .hero-actions,.form-actions{flex-direction:column;align-items:stretch}
      .float-tools{right:12px;bottom:12px}
      .float-tools a,.float-tools button{width:44px;height:44px}
    }