:root{
      --bg:#f7f3ec;
      --bg2:#fbfaf7;
      --card:#ffffff;
      --text:#23303d;
      --muted:#5f6e7c;
      --line:#e6ded2;
      --brand:#2d6cdf;
      --brand2:#f06a6a;
      --brand3:#19a7a5;
      --shadow:0 14px 40px rgba(36,54,78,.08);
      --radius:22px;
      --radius-sm:16px;
      --max: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:
      radial-gradient(circle at top left, rgba(45,108,223,.08), transparent 28%),
      radial-gradient(circle at 85% 10%, rgba(240,106,106,.10), transparent 22%),
      radial-gradient(circle at 15% 80%, rgba(25,167,165,.09), transparent 20%),
      linear-gradient(180deg,var(--bg),#fff 18%,var(--bg2) 100%);color:var(--text)}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px,var(--max));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(247,243,236,.82);backdrop-filter:blur(14px);border-bottom:1px solid rgba(230,222,210,.7)}
    .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;border:1px solid var(--line);padding:4px;box-shadow:0 6px 18px rgba(0,0,0,.04)}
    .brand strong{display:block;font-size:1rem;line-height:1.1}
    .brand span{display:block;font-size:.82rem;color:var(--muted)}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:14px;padding:10px 12px}
    .nav-links{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:flex-end}
    .nav-links a{font-size:.92rem;color:#314355;padding:8px 10px;border-radius:999px;transition:.2s ease}
    .nav-links a:hover{background:#fff;box-shadow:0 8px 22px rgba(36,54,78,.08);transform:translateY(-1px)}
    .hero{padding:34px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.section-card,.metric,.service-card,.review,.faq-item,.case-card,.article-card,.price-card,.timeline-item,.compare-wrap,.form-card,.contact-card,.network-card,.help-card{background:var(--card);border:1px solid rgba(230,222,210,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:30px;position:relative;overflow:hidden}
    .hero-main:before,.hero-main:after{content:"";position:absolute;border-radius:999px;filter:blur(2px);opacity:.85;pointer-events:none}
    .hero-main:before{width:220px;height:220px;background:radial-gradient(circle, rgba(45,108,223,.16), transparent 65%);right:-60px;top:-50px}
    .hero-main:after{width:170px;height:170px;background:radial-gradient(circle, rgba(240,106,106,.14), transparent 65%);left:-50px;bottom:-40px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.84rem;color:#245; background:rgba(45,108,223,.08);border:1px solid rgba(45,108,223,.15);padding:7px 12px;border-radius:999px}
    h1{margin:14px 0 12px;font-size:clamp(2rem,4vw,3.6rem);line-height:1.06;letter-spacing:-.03em}
    .lead{margin:0;color:var(--muted);font-size:1.03rem;line-height:1.8;max-width:62ch}
    .cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 18px;border-radius:14px;font-weight:700;border:1px solid transparent;transition:.22s ease;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--brand),#6d8ff5);color:#fff;box-shadow:0 12px 24px rgba(45,108,223,.22)}
    .btn-secondary{background:#fff;color:var(--text);border-color:var(--line)}
    .btn:hover{transform:translateY(-2px)}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
    .hero-point{padding:14px;border-radius:18px;background:linear-gradient(180deg,#fff,rgba(255,255,255,.76));border:1px solid rgba(230,222,210,.95)}
    .hero-point strong{display:block;font-size:1.1rem}
    .hero-point span{display:block;margin-top:6px;color:var(--muted);font-size:.88rem;line-height:1.5}
    .hero-side{padding:20px;display:grid;gap:14px}
    .mini-panel{padding:18px;border-radius:18px;background:linear-gradient(180deg,rgba(45,108,223,.08),rgba(255,255,255,.95));border:1px solid rgba(45,108,223,.14)}
    .mini-panel h2{margin:0 0 10px;font-size:1.08rem}
    .tag-cloud,.pill-row{display:flex;flex-wrap:wrap;gap:8px}
    .tag,.pill{padding:8px 11px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:.86rem;color:#3a4b5a}
    .section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:14px}
    .section-head h2{margin:0;font-size:1.6rem}
    .section-head p{margin:0;color:var(--muted);max-width:62ch;line-height:1.7}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .metric{padding:18px}
    .metric .num{font-size:1.65rem;font-weight:800;color:#1f3d7a}
    .metric .txt{margin-top:8px;color:var(--muted);line-height:1.6;font-size:.92rem}
    .section-card{padding:22px}
    .service-grid,.case-grid,.review-grid,.article-grid,.network-grid,.help-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .service-card,.case-card,.review,.article-card,.network-card,.help-card{padding:18px}
    .service-card h3,.case-card h3,.review h3,.article-card h3,.network-card h3,.help-card h3{margin:0 0 8px;font-size:1.06rem}
    .service-card p,.case-card p,.review p,.article-card p,.network-card p,.help-card p{margin:0;color:var(--muted);line-height:1.7;font-size:.94rem}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .steps,.timeline{display:grid;gap:12px}
    .step,.timeline-item{padding:16px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(180deg,#fff,#fcfaf7)}
    .step strong,.timeline-item strong{display:block;margin-bottom:8px}
    .compare-wrap{padding:20px;overflow:hidden}
    .table-wrap{overflow:auto}
    table{width:100%;border-collapse:separate;border-spacing:0;min-width:860px}
    th,td{padding:14px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
    th{background:#f7f2ea;color:#33465a;font-size:.92rem}
    td{color:#34495c;background:#fff}
    .score{font-size:1.2rem;font-weight:800;color:#d04d4d}
    .faq-list{display:grid;gap:10px}
    .faq-item summary{list-style:none;cursor:pointer;padding:18px 46px 18px 18px;font-weight:700;position:relative}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"+";position:absolute;right:18px;top:14px;width:24px;height:24px;display:grid;place-items:center;border-radius:50%;background:#f2f4f7;color:#38506a}
    .faq-item[open] summary:after{content:"–"}
    .faq-item .faq-body{padding:0 18px 18px;color:var(--muted);line-height:1.75}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .field{display:flex;flex-direction:column;gap:8px}
    label{font-size:.92rem;font-weight:700;color:#33465a}
    input,select,textarea{width:100%;border:1px solid var(--line);background:#fff;border-radius:14px;padding:12px 14px;font:inherit;color:var(--text);outline:none;transition:.2s ease}
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(45,108,223,.55);box-shadow:0 0 0 4px rgba(45,108,223,.08)}
    .full{grid-column:1/-1}
    .footer{margin-top:10px;padding:22px 0 28px;border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.7),rgba(247,243,236,.9));color:#2c3e50}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:16px}
    .footer a{color:#214d8f}
    .float-box{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .float-btn{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:16px;padding:12px 14px;font-weight:700;color:#203244}
    .back-top{position:fixed;right:16px;bottom:74px;z-index:60;display:none}
    .fade-in{opacity:0;transform:translateY(18px);transition:.65s ease}
    .fade-in.in{opacity:1;transform:none}
    .image-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .image-grid img{width:100%;border-radius:18px;border:1px solid var(--line);box-shadow:var(--shadow)}
    @media (max-width: 980px){
      .hero-grid,.metrics,.service-grid,.case-grid,.review-grid,.article-grid,.network-grid,.help-grid,.footer-grid,.split{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
    }
    @media (max-width: 760px){
      .nav-toggle{display:inline-flex}
      .nav-links{display:none;width:100%;padding:10px 0 2px}
      .nav-links.open{display:flex;flex-direction:column;align-items:flex-start}
      .nav{flex-wrap:wrap}
      .hero-main{padding:22px}
      .form-grid{grid-template-columns:1fr}
      h1{font-size:2.1rem}
      .container{width:min(100% - 24px,var(--max))}
      .table-wrap{margin:0 -6px}
      th,td{padding:12px 10px}
    }