:root{
      --bg:#f6f8fc;
      --bg2:#eef4ff;
      --card:#ffffff;
      --text:#132033;
      --muted:#5d6b80;
      --line:#d8e1f0;
      --brand:#2b6cff;
      --brand2:#16c7b7;
      --accent:#ff7a45;
      --shadow:0 18px 40px rgba(22,45,92,.10);
      --shadow2:0 10px 24px rgba(43,108,255,.12);
      --radius:20px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:Inter,system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--text);background:radial-gradient(circle at top left,#eef7ff 0,#f7f9fd 42%,#f5f8ff 100%);}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(246,248,252,.84);backdrop-filter:blur(14px);border-bottom:1px solid rgba(216,225,240,.8)}
    .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:10px;background:#fff;padding:4px;box-shadow:var(--shadow2)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;color:var(--muted);font-size:12px;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
    .nav-links a{font-size:14px;color:#22324a;padding:8px 0;position:relative}
    .nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand2));transition:.25s}
    .nav-links a:hover::after{width:100%}
    .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;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease}
    .btn:hover{transform:translateY(-2px)}
    .btn-primary{color:#fff;background:linear-gradient(135deg,var(--brand),#6f8cff);box-shadow:0 16px 28px rgba(43,108,255,.22)}
    .btn-secondary{color:var(--brand);background:#eef4ff;border:1px solid #cddcff}
    .menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;color:var(--text)}
    .hero{padding:36px 0 24px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
    .hero-card{position:relative;overflow:hidden;border-radius:28px;background:linear-gradient(135deg,#0f244d 0%,#173c86 44%,#2d6cff 100%);color:#fff;box-shadow:var(--shadow)}
    .hero-card::before,.hero-card::after{content:"";position:absolute;border-radius:999px;filter:blur(2px);opacity:.24;background:rgba(255,255,255,.9)}
    .hero-card::before{width:180px;height:180px;right:-40px;top:-44px}
    .hero-card::after{width:260px;height:260px;right:60px;bottom:-160px}
    .hero-inner{position:relative;padding:34px}
    h1{margin:0 0 14px;font-size:clamp(30px,4vw,52px);line-height:1.1;letter-spacing:-.02em}
    .hero p{margin:0 0 18px;color:rgba(255,255,255,.88);font-size:16px;line-height:1.8;max-width:56ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .hero-mini{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:26px}
    .mini-stat{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);backdrop-filter:blur(8px);border-radius:18px;padding:16px}
    .mini-stat strong{display:block;font-size:22px;margin-bottom:5px}
    .mini-stat span{color:rgba(255,255,255,.8);font-size:13px;line-height:1.5}
    .hero-side{display:grid;gap:16px}
    .side-panel,.stat-strip,.box,.section-card,.faq-item,.review,.article,.info-card,.form-card,.case-card,.price-card,.timeline-item,.compare-table,.footer-card{background:var(--card);border:1px solid rgba(216,225,240,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .side-panel{padding:22px}
    .side-panel h2,.section-title h2{margin:0 0 10px;font-size:22px}
    .side-panel p,.section-title p,.muted{margin:0;color:var(--muted);line-height:1.75}
    .badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
    .badge{padding:8px 12px;border-radius:999px;background:linear-gradient(135deg,#eef4ff,#f6fbff);border:1px solid #dbe7ff;color:#24406a;font-size:13px}
    .quick-list{margin:16px 0 0;padding:0;list-style:none;display:grid;gap:12px}
    .quick-list li{display:flex;gap:10px;color:#31435d;line-height:1.65}
    .quick-list li::before{content:"✓";color:var(--brand);font-weight:800}
    .section{padding:18px 0}
    .section-title{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:16px}
    .stat-grid,.service-grid,.industry-grid,.review-grid,.article-grid,.network-grid,.price-grid,.match-grid,.feature-grid,.case-grid{display:grid;gap:16px}
    .stat-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
    .stat-strip{padding:18px}
    .stat-strip strong{display:block;font-size:26px;margin-bottom:6px;color:#16315b}
    .grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
    .grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
    .section-card,.box,.review,.article,.case-card,.price-card,.info-card,.form-card,.faq-item,.timeline-item{padding:20px}
    .service-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
    .feature-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
    .feature{padding:18px;border-radius:18px;background:linear-gradient(180deg,#fff 0,#f9fbff 100%);border:1px solid var(--line);transition:transform .2s ease,box-shadow .2s ease}
    .feature:hover{transform:translateY(-4px);box-shadow:var(--shadow2)}
    .feature h3,.case-card h3,.review h3,.article h3,.price-card h3,.info-card h3{margin:0 0 10px;font-size:18px}
    .feature p,.case-card p,.review p,.article p,.price-card p,.info-card p{margin:0;color:var(--muted);line-height:1.75}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#33445e;font-size:13px}
    .timeline{display:grid;gap:14px}
    .timeline-item{position:relative;padding-left:22px}
    .timeline-item::before{content:"";position:absolute;left:10px;top:24px;bottom:-14px;width:2px;background:linear-gradient(180deg,var(--brand),var(--brand2))}
    .timeline-item:last-child::before{display:none}
    .timeline-item::after{content:"";position:absolute;left:4px;top:22px;width:14px;height:14px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand2));box-shadow:0 0 0 5px #edf4ff}
    .compare-wrap{overflow:auto;border-radius:20px}
    table{width:100%;border-collapse:collapse;min-width:760px;background:#fff}
    th,td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
    th{background:#f3f7ff;color:#20314d;font-size:14px}
    td{color:#32455f}
    .rating{display:flex;gap:3px;color:#ffb400;font-size:18px}
    .faq-item{padding:0;overflow:hidden}
    .faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:14px;padding:18px 20px;background:#fff;border:0;color:var(--text);font-weight:700;font-size:16px;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 20px}
    .faq-item.open .faq-a{max-height:220px;padding-bottom:18px}
    .faq-item.open .faq-q .icon{transform:rotate(45deg)}
    .icon{transition:transform .2s ease;color:var(--brand)}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .field{display:grid;gap:8px}
    label{font-size:14px;font-weight:700;color:#27405f}
    input,select,textarea{width:100%;border:1px solid #cfd9ea;background:#fff;border-radius:14px;padding:12px 14px;font:inherit;color:var(--text);outline:none;transition:border-color .2s ease,box-shadow .2s ease}
    input:focus,select:focus,textarea:focus{border-color:#7da6ff;box-shadow:0 0 0 4px rgba(43,108,255,.12)}
    textarea{min-height:120px;resize:vertical}
    .submit-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:14px}
    .footer{padding:14px 0 30px}
    .footer-card{padding:22px;background:linear-gradient(180deg,#fff 0,#f6f9ff 100%)}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .9fr;gap:18px}
    .footer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
    .footer-links a,.footer small{color:#516277}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .floating a,.floating button{border-radius:999px;border:0;box-shadow:var(--shadow2);padding:12px 14px;background:#fff;color:#22324a;font-weight:700;display:inline-flex;align-items:center;gap:8px;justify-content:center}
    .grid-images{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .grid-images img{border-radius:18px;border:1px solid var(--line);background:#fff}
    .scroll-reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
    .scroll-reveal.show{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.footer-grid,.service-grid,.feature-grid,.stat-grid,.grid-3,.grid-2,.review-grid,.article-grid,.network-grid,.price-grid,.match-grid,.case-grid,.grid-images,.form-grid{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-toggle{display:inline-flex}
      .nav.open .nav-links{display:flex;position:absolute;left:16px;right:16px;top:64px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;flex-direction:column;align-items:flex-start;box-shadow:var(--shadow)}
      .nav.open{position:relative}
      .nav-cta{display:none}
      .hero-inner{padding:24px}
      .hero{padding-top:20px}
    }