:root{
      --bg:#f5f8ff;
      --bg2:#fffaf3;
      --card:#ffffff;
      --line:#dbe5f5;
      --text:#15304d;
      --muted:#5f7288;
      --accent:#3b82f6;
      --accent2:#8b5cf6;
      --accent3:#14b8a6;
      --shadow:0 18px 40px rgba(24, 39, 75, .10);
      --shadow2:0 12px 28px rgba(24, 39, 75, .08);
      --radius:20px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(59,130,246,.12), transparent 24%),
        radial-gradient(circle at top right, rgba(139,92,246,.10), transparent 22%),
        linear-gradient(180deg, #f8fbff 0%, #f6f8ff 42%, #fffdf9 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px, var(--container)); margin:0 auto}
    header{position:sticky;top:0;z-index:50;background:rgba(245,248,255,.82);backdrop-filter:blur(14px);border-bottom:1px solid rgba(219,229,245,.8)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:76px}
    .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;box-shadow:0 8px 22px rgba(59,130,246,.12)}
    .brand .name{font-size:18px;font-weight:800;letter-spacing:.5px}
    .brand .sub{font-size:12px;color:var(--muted);margin-top:2px}
    .menu{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    .menu a{font-size:14px;color:#26435f;padding:8px 10px;border-radius:999px;transition:.25s}
    .menu a:hover,.menu a:focus{background:#eaf2ff;color:#0f2b47}
    .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;transition:.25s;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;box-shadow:0 14px 24px rgba(59,130,246,.22)}
    .btn-primary:hover{transform:translateY(-1px);box-shadow:0 18px 28px rgba(59,130,246,.26)}
    .btn-ghost{background:#fff;color:#294763;border-color:#d6e2f1}
    .btn-ghost:hover{border-color:#b8cbe3;transform:translateY(-1px)}
    .nav-toggle{display:none;background:#fff;border:1px solid #d6e2f1;border-radius:12px;width:44px;height:44px;align-items:center;justify-content:center}
    .nav-toggle span{display:block;width:18px;height:2px;background:#294763;position:relative}
    .nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#294763}
    .nav-toggle span::before{top:-6px}.nav-toggle span::after{top:6px}

    main{overflow:hidden}
    section{padding:72px 0}
    .hero{padding:34px 0 56px;position:relative}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:26px;align-items:stretch}
    .hero-copy,.hero-panel,.card,.feature,.review,.step,.faq-item,.article,.scheme,.stat,.compare,.timeline li,.contact-box,.benefit,.price-box{background:rgba(255,255,255,.82);backdrop-filter:blur(12px);border:1px solid rgba(219,229,245,.92);border-radius:var(--radius);box-shadow:var(--shadow2)}
    .hero-copy{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,rgba(59,130,246,.12),rgba(20,184,166,.12));color:#1d4d79;border:1px solid rgba(59,130,246,.16);padding:8px 14px;border-radius:999px;font-size:13px;font-weight:700}
    h1{font-size:clamp(32px,5vw,54px);line-height:1.08;margin:18px 0 14px;letter-spacing:-.5px}
    .lead{font-size:17px;line-height:1.8;color:var(--muted);max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:26px}
    .point{padding:14px 15px;border-radius:16px;background:linear-gradient(180deg,#fff,#f7fbff);border:1px solid #e3ecf7}
    .point strong{display:block;font-size:15px;margin-bottom:5px}
    .point span{font-size:13px;color:var(--muted);line-height:1.6}
    .hero-panel{padding:24px;position:relative;overflow:hidden}
    .hero-panel::before{content:"";position:absolute;inset:auto -18% -25% auto;width:220px;height:220px;background:radial-gradient(circle, rgba(59,130,246,.18), transparent 70%);border-radius:50%}
    .stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .stat{padding:18px}
    .stat .num{font-size:26px;font-weight:900;background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
    .stat .label{font-size:13px;color:var(--muted);margin-top:6px;line-height:1.5}
    .hero-card{margin-top:14px;padding:18px;border-radius:18px;background:linear-gradient(135deg,rgba(59,130,246,.08),rgba(139,92,246,.08));border:1px solid rgba(59,130,246,.12)}
    .hero-card h3{margin:0 0 8px;font-size:18px}
    .hero-card p{margin:0;color:var(--muted);line-height:1.7;font-size:14px}
    .tag-cloud,.service-tags{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;background:#fff;border:1px solid #dbe5f5;border-radius:999px;font-size:13px;color:#294763}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:18px;margin-bottom:24px}
    .section-head h2{font-size:clamp(24px,3.5vw,36px);margin:0}
    .section-head p{margin:0;color:var(--muted);max-width:68ch;line-height:1.7}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
    .card,.feature,.review,.step,.faq-item,.article,.scheme,.compare,.price-box,.contact-box,.benefit{padding:22px}
    .card h3,.feature h3,.review h3,.step h3,.faq-item summary,.article h3,.scheme h3,.compare h3,.benefit h3{margin:0 0 10px;font-size:18px}
    .muted{color:var(--muted);line-height:1.8}
    .icon-badge{width:44px;height:44px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,rgba(59,130,246,.14),rgba(20,184,166,.14));color:#1d4d79;font-weight:900;margin-bottom:12px}
    .service-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .service-item{padding:16px;border-radius:16px;background:linear-gradient(180deg,#fff,#f8fbff);border:1px solid #e2ebf6}
    .service-item strong{display:block;margin-bottom:6px}
    .service-item p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
    .workflow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{position:relative}
    .step .index{display:inline-flex;width:34px;height:34px;border-radius:50%;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;font-weight:800;margin-bottom:12px}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid #dbe5f5;background:#fff;box-shadow:var(--shadow2)}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:16px 14px;text-align:left;border-bottom:1px solid #e6eef8;font-size:14px;vertical-align:top}
    th{background:#f7faff;color:#12324f}
    tr:hover td{background:#fbfdff}
    .rating{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
    .stars{color:#f59e0b;font-size:20px;letter-spacing:2px}
    details{border:1px solid #dbe5f5;border-radius:16px;background:#fff;box-shadow:var(--shadow2)}
    details summary{list-style:none;cursor:pointer;padding:18px 20px;font-weight:700;position:relative}
    details summary::-webkit-details-marker{display:none}
    details summary::after{content:"+";position:absolute;right:18px;top:16px;font-size:22px;color:#55708a}
    details[open] summary::after{content:"–"}
    details .faq-body{padding:0 20px 18px;color:var(--muted);line-height:1.8}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .reviews-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
    .review .meta{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:14px;padding-top:14px;border-top:1px dashed #dbe5f5;color:#5d7288;font-size:13px}
    .case-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .case-board{padding:22px;border-radius:var(--radius);background:linear-gradient(135deg,rgba(59,130,246,.08),rgba(139,92,246,.08));border:1px solid rgba(59,130,246,.12)}
    .timeline{list-style:none;padding:0;margin:0;display:grid;gap:14px}
    .timeline li{padding:18px 18px 18px 22px;border-left:4px solid var(--accent);border-radius:16px}
    .timeline .time{font-size:13px;color:#3d5f7c;font-weight:700;margin-bottom:8px}
    .article-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
    .article .meta{font-size:13px;color:#6a7f94;margin-bottom:10px}
    .article a.more{display:inline-flex;margin-top:14px;color:#1f4f82;font-weight:700}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    .field label{font-size:14px;font-weight:700;color:#26435f}
    .field input,.field select,.field textarea{
      width:100%;border:1px solid #cfe0f2;border-radius:14px;padding:13px 14px;background:#fff;color:var(--text);font:inherit;outline:none;transition:.2s
    }
    .field textarea{min-height:128px;resize:vertical}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:#79a9f5;box-shadow:0 0 0 4px rgba(59,130,246,.10)}
    .span-2{grid-column:span 2}
    .contact-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:18px}
    .contact-box .contact-list{display:grid;gap:12px;margin-top:14px}
    .contact-item{display:flex;align-items:flex-start;gap:12px;padding:14px;border-radius:16px;background:#f7fbff;border:1px solid #e2ebf6}
    .contact-item strong{display:block;margin-bottom:4px}
    .contact-item span{display:block;color:var(--muted);font-size:14px;line-height:1.6}
    .qr{display:flex;gap:14px;align-items:center;margin-top:16px;padding:14px;border-radius:16px;background:#fff;border:1px solid #e2ebf6}
    .qr img{width:108px;height:108px;object-fit:cover;border-radius:14px;border:1px solid #dbe5f5}
    footer{margin-top:10px;padding:30px 0 34px;background:#f1f6ff;border-top:1px solid #dbe5f5;color:#23405d}
    footer a{color:#184f86}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px}
    .footer-grid h3{margin:0 0 12px;font-size:16px}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid #dbe5f5}
    .float-tools{position:fixed;right:16px;bottom:16px;z-index:60;display:flex;flex-direction:column;gap:10px}
    .float-tools a,.float-tools button{width:48px;height:48px;border-radius:16px;border:1px solid #d6e2f1;background:#fff;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow2);cursor:pointer;color:#295070;font-weight:800}
    .float-tools a{background:linear-gradient(135deg,#fff,#eff6ff)}
    .fade-up{opacity:0;transform:translateY(16px);transition:opacity .7s ease, transform .7s ease}
    .fade-up.show{opacity:1;transform:none}
    .mini-note{font-size:13px;color:#6a7f94;line-height:1.7}
    .price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
    .price-box .price{font-size:30px;font-weight:900;color:#193d64;margin:8px 0}
    .price-box ul{margin:0;padding-left:18px;color:var(--muted);line-height:1.9}
    .network{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .network .benefit{min-height:100%}
    .compare-grid{display:grid;grid-template-columns:1fr .9fr;gap:18px}
    .score-card{padding:24px;border-radius:var(--radius);background:linear-gradient(135deg,rgba(59,130,246,.10),rgba(20,184,166,.10));border:1px solid rgba(59,130,246,.16)}
    .score-card .big{font-size:42px;font-weight:900;line-height:1;color:#17406d}
    .logo-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
    .logo-row img{width:46px;height:46px}
    .links-stack{display:grid;gap:10px}
    .links-stack a{color:#1d4d79;font-weight:700}
    .anchor-pad{scroll-margin-top:98px}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.case-grid,.contact-layout,.compare-grid,.footer-grid,.reviews-grid,.article-list,.price-grid,.network,.faq-grid,.workflow,.grid-3,.service-list{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .form-grid .span-2{grid-column:auto}
      .menu{display:none}
      .nav-toggle{display:inline-flex}
      .menu.open{
        display:flex;position:absolute;left:16px;right:16px;top:76px;padding:14px;background:rgba(255,255,255,.98);border:1px solid #dbe5f5;border-radius:18px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start
      }
      .nav{position:relative}
      .workflow{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 640px){
      section{padding:56px 0}
      .hero{padding-top:24px}
      .hero-copy,.hero-panel,.card,.feature,.review,.step,.faq-item,.article,.scheme,.compare,.price-box,.contact-box,.benefit{padding:18px}
      .nav-cta .btn-ghost{display:none}
      .workflow{grid-template-columns:1fr}
      .stat-grid{grid-template-columns:1fr}
      .footer-links{gap:8px}
      .qr{align-items:flex-start}
      .qr img{width:92px;height:92px}
    }