:root{
      --bg:#f5f8ff;
      --bg2:#eef4ff;
      --card:#ffffff;
      --text:#10203a;
      --muted:#5f6f8a;
      --line:#d9e3f4;
      --primary:#0b4dd8;
      --primary2:#1b78ff;
      --accent:#ffb400;
      --shadow:0 16px 40px rgba(11,77,216,.10);
      --radius:20px;
      --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) 0%,#fff 28%,var(--bg2) 100%);color:var(--text)}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    .topbar{position:sticky;top:0;z-index:50;background:rgba(245,248,255,.84);backdrop-filter:blur(14px);border-bottom:1px solid rgba(217,227,244,.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:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;border:1px solid var(--line)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:4px}
    .navlinks{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
    .navlinks a{font-size:14px;color:var(--text);padding:8px 10px;border-radius:999px;transition:.2s}
    .navlinks a:hover,.navlinks a:focus{background:#eaf1ff;color:var(--primary)}
    .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:.22s;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 12px 24px rgba(11,77,216,.22)}
    .btn-primary:hover{transform:translateY(-1px);box-shadow:0 16px 28px rgba(11,77,216,.28)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:#b9c9ea;transform:translateY(-1px)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
    .hero{padding:30px 0 22px;position:relative;overflow:hidden}
    .hero::before,.hero::after{content:"";position:absolute;border-radius:50%;filter:blur(10px);pointer-events:none}
    .hero::before{width:260px;height:260px;background:rgba(27,120,255,.12);right:-80px;top:-40px}
    .hero::after{width:180px;height:180px;background:rgba(255,180,0,.12);left:-60px;bottom:10px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
    .hero-copy,.hero-panel,.section-card,.feature-card,.metric,.review,.case-card,.faq-item,.article-item,.timeline-item,.price-box,.match-box,.form-card,.compare-card,.network-card{background:rgba(255,255,255,.86);border:1px solid rgba(217,227,244,.92);box-shadow:var(--shadow);border-radius:var(--radius)}
    .hero-copy{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#eaf1ff;color:var(--primary);font-weight:700;font-size:13px}
    h1{margin:18px 0 14px;font-size:clamp(30px,5vw,52px);line-height:1.12;letter-spacing:-.02em}
    .lead{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:60ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
    .point{padding:14px;background:#f7fbff;border:1px solid var(--line);border-radius:16px}
    .point strong{display:block;font-size:18px;color:var(--primary);margin-bottom:6px}
    .point span{font-size:13px;color:var(--muted);line-height:1.6}
    .hero-panel{padding:24px;display:flex;flex-direction:column;gap:14px;justify-content:space-between;background:linear-gradient(180deg,#ffffff 0%,#f2f7ff 100%)}
    .panel-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .mini{padding:16px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .mini b{display:block;font-size:18px;margin-bottom:6px}
    .mini small{color:var(--muted);line-height:1.6;display:block}
    .panel-badge{padding:14px;border-radius:18px;background:linear-gradient(135deg,#0b4dd8,#1b78ff);color:#fff}
    .panel-badge p{margin:0;line-height:1.7}
    .section{padding:18px 0 8px}
    .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);max-width:68ch;line-height:1.7}
    .section-card{padding:22px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .metric{padding:22px}
    .metric .num{font-size:30px;font-weight:800;color:var(--primary);line-height:1}
    .metric p{margin:10px 0 0;color:var(--muted);line-height:1.6}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .feature-card,.case-card,.review,.article-item,.timeline-item,.price-box,.match-box,.compare-card,.network-card,.form-card{padding:20px}
    .feature-card h3,.case-card h3,.review h3,.article-item h3,.timeline-item h3,.match-box h3,.compare-card h3{margin:0 0 10px;font-size:18px}
    .feature-card p,.case-card p,.review p,.article-item p,.timeline-item p,.match-box p,.price-box p{margin:0;color:var(--muted);line-height:1.75}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:10px 14px;border-radius:999px;background:#eff5ff;border:1px solid #dce7fb;color:#26415f;font-size:13px}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{padding:18px;border-radius:18px;border:1px solid var(--line);background:#fff;position:relative}
    .step b{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:10px;background:#eaf1ff;color:var(--primary);margin-bottom:12px}
    .compare-wrap,.faq-wrap,.articles-wrap,.reviews-wrap,.cases-wrap,.network-wrap,.prices-wrap,.timeline-wrap{display:grid;gap:16px}
    table{width:100%;border-collapse:collapse;overflow:hidden;border-radius:16px}
    th,td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;font-size:14px}
    th{background:#f3f7ff;color:#163356}
    td{color:#27405f}
    .table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:18px;background:#fff}
    details{border:1px solid var(--line);border-radius:16px;background:#fff;overflow:hidden}
    details+details{margin-top:12px}
    summary{list-style:none;padding:18px 20px;cursor:pointer;font-weight:700;display:flex;align-items:center;justify-content:space-between;gap:12px}
    summary::-webkit-details-marker{display:none}
    summary::after{content:"+";font-size:22px;color:var(--primary)}
    details[open] summary::after{content:"–"}
    details .faq-content{padding:0 20px 18px;color:var(--muted);line-height:1.8}
    .reviews-wrap{grid-template-columns:repeat(3,1fr)}
    .case-card .meta,.review .meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
    .pill{font-size:12px;padding:6px 10px;border-radius:999px;background:#eef4ff;color:#264b88}
    .article-item{display:grid;gap:8px}
    .articles-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field{display:grid;gap:8px}
    .field label{font-size:14px;font-weight:700}
    .field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:14px;background:#fff;padding:14px 14px;font:inherit;color:var(--text);outline:none}
    .field textarea{min-height:120px;resize:vertical}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:#9bb7ef;box-shadow:0 0 0 4px rgba(11,77,216,.08)}
    .footer{margin-top:18px;padding:22px 0 30px;border-top:1px solid var(--line);background:#f7faff;color:#213554}
    .footer-grid{display:grid;grid-template-columns:1.3fr .9fr .8fr;gap:18px}
    .footer a{color:#173b7a}
    .small{font-size:13px;color:var(--muted);line-height:1.8}
    .float-box{position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px}
    .float-btn{padding:12px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);box-shadow:0 10px 24px rgba(16,32,58,.12);font-weight:700;color:var(--primary)}
    .backtop{display:none}
    .toc{display:flex;flex-wrap:wrap;gap:10px}
    .toc a{font-size:13px;padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line)}
    .image-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .image-row img{width:100%;border-radius:18px;border:1px solid var(--line);box-shadow:var(--shadow)}
    .scroll-animate{opacity:0;transform:translateY(16px);transition:.7s ease}
    .scroll-animate.in{opacity:1;transform:none}
    @media (max-width: 1024px){
      .hero-grid,.grid-4,.grid-3,.workflow,.reviews-wrap,.articles-grid,.footer-grid,.form-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 760px){
      .navlinks,.nav-cta{display:none}
      .menu-btn{display:inline-flex}
      .hero-grid,.grid-4,.grid-3,.workflow,.reviews-wrap,.articles-grid,.footer-grid,.form-grid,.hero-points,.panel-grid,.image-row{grid-template-columns:1fr}
      .hero-copy{padding:24px}
      .section-head{flex-direction:column;align-items:flex-start}
      .topbar.open .navlinks,.topbar.open .nav-cta{display:flex}
      .topbar.open .nav{align-items:flex-start;flex-wrap:wrap}
      .topbar.open .navlinks{width:100%;padding-top:10px}
      .topbar.open .nav-cta{width:100%}
      .topbar.open .menu-btn{margin-left:auto}
      .nav{padding:12px 0}
      .navlinks{gap:10px}
      .navlinks a{background:#fff;border:1px solid var(--line)}
    }