:root{
      --bg:#f6f8fc;
      --panel:#ffffff;
      --panel-2:#f1f5ff;
      --text:#162033;
      --muted:#5b677d;
      --line:#dbe3f3;
      --brand:#1f6bff;
      --brand-2:#7b3ff2;
      --accent:#23c5ff;
      --warm:#ff7a59;
      --shadow:0 18px 50px rgba(31, 107, 255, .12);
      --radius:22px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(35,197,255,.12), transparent 30%),
        radial-gradient(circle at top right, rgba(123,63,242,.12), transparent 25%),
        linear-gradient(180deg, #fafdff 0%, #f4f7fc 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{max-width:var(--container);margin:0 auto;padding:0 20px}
    .site-header{
      position:sticky;top:0;z-index:60;
      backdrop-filter:saturate(180%) blur(18px);
      background:rgba(246,248,252,.84);
      border-bottom:1px solid rgba(219,227,243,.8);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:18px;
      min-height:76px;
    }
    .brand{display:flex;align-items:center;gap:12px;font-weight:800}
    .brand img{width:42px;height:42px;object-fit:contain}
    .brand strong{font-size:18px;letter-spacing:.4px}
    .brand small{display:block;font-size:12px;color:var(--muted);font-weight:600}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:var(--muted);padding:8px 10px;border-radius:999px;transition:.2s}
    .nav-links a:hover,.nav-links a.active{color:var(--text);background:rgba(31,107,255,.09)}
    .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;cursor:pointer;transition:.2s;white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 14px 30px rgba(31,107,255,.22)}
    .btn-outline{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
    .hero{
      padding:42px 0 24px;
      position:relative;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch;
    }
    .hero-main,.hero-side,.section-card,.soft-card,.review-card,.faq-item,.compare-card,.article-card,.case-card,.timeline-item,.price-card,.info-box,.service-node,.quote-card{
      background:var(--panel);
      border:1px solid rgba(219,227,243,.95);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
    }
    .hero-main{
      padding:34px;
      position:relative;overflow:hidden;
      background:
        linear-gradient(180deg, rgba(255,255,255,.95), rgba(244,248,255,.98)),
        radial-gradient(circle at top right, rgba(31,107,255,.12), transparent 35%);
    }
    .hero-main::before,.hero-main::after{
      content:"";position:absolute;border-radius:50%;filter:blur(10px);pointer-events:none;
      background:linear-gradient(135deg, rgba(35,197,255,.35), rgba(123,63,242,.18));
    }
    .hero-main::before{width:180px;height:180px;right:-55px;top:-40px}
    .hero-main::after{width:120px;height:120px;left:-35px;bottom:-35px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(31,107,255,.08);color:var(--brand);font-weight:700;font-size:13px}
    h1{margin:16px 0 14px;font-size:clamp(30px,5vw,52px);line-height:1.08;letter-spacing:-.02em}
    .hero p{margin:0;color:var(--muted);line-height:1.8;font-size:16px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
    .hero-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .metric{
      padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff, #f6f9ff);
      border:1px solid rgba(219,227,243,.95);
    }
    .metric strong{display:block;font-size:22px}
    .metric span{color:var(--muted);font-size:13px}
    .hero-side{padding:18px;display:grid;gap:14px}
    .side-top{
      padding:20px;border-radius:18px;background:linear-gradient(135deg,#111a32,#2445a7 55%,#7b3ff2);
      color:#fff;overflow:hidden;position:relative;
    }
    .side-top h3{margin:0 0 10px;font-size:20px}
    .side-top p{margin:0;opacity:.88;line-height:1.7}
    .side-list{display:grid;gap:10px}
    .side-list div{padding:12px 14px;border-radius:16px;background:#f7faff;border:1px solid var(--line);color:var(--text);font-size:14px;line-height:1.6}
    .section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:clamp(24px,3vw,34px)}
    .section-head p{margin:0;color:var(--muted);max-width:720px;line-height:1.7}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .card{padding:20px}
    .soft-card h3,.section-card h3,.compare-card h3,.price-card h3,.article-card h3,.case-card h3,.info-box h3,.service-node h3,.review-card h3{margin:0 0 10px;font-size:18px}
    .soft-card p,.section-card p,.compare-card p,.price-card p,.article-card p,.case-card p,.info-box p,.service-node p,.review-card p{margin:0;color:var(--muted);line-height:1.7}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span,.mini-tag{
      display:inline-flex;align-items:center;gap:6px;
      padding:9px 12px;border-radius:999px;background:#f7faff;border:1px solid var(--line);
      color:var(--text);font-size:13px
    }
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{
      padding:18px;border-radius:20px;background:linear-gradient(180deg,#fff,#f6f9ff);
      border:1px solid var(--line);position:relative
    }
    .step b{display:inline-flex;width:34px;height:34px;border-radius:12px;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;margin-bottom:12px}
    .step h3{margin:0 0 8px}
    .step p{margin:0;color:var(--muted);line-height:1.7;font-size:14px}
    .table-wrap{overflow:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:15px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;font-size:14px;line-height:1.7}
    th{background:#f7faff;color:var(--text)}
    tr:last-child td{border-bottom:none}
    .badge{
      display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;
      background:rgba(31,107,255,.09);color:var(--brand);font-size:12px;font-weight:700
    }
    .score{
      display:flex;align-items:center;gap:12px;margin-top:14px;flex-wrap:wrap
    }
    .score .star{color:#ffb31a;font-size:18px;letter-spacing:1px}
    .compare-card .rating{
      margin-top:12px;padding:14px;border-radius:16px;background:linear-gradient(135deg,rgba(31,107,255,.08),rgba(123,63,242,.08));
      border:1px solid rgba(31,107,255,.16)
    }
    .compare-card .rating strong{font-size:28px}
    .service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .service-node{padding:20px;min-height:100%}
    .service-node ul{margin:12px 0 0;padding:0;list-style:none;display:grid;gap:8px}
    .service-node li{padding-left:18px;position:relative;color:var(--muted);line-height:1.6;font-size:14px}
    .service-node li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--accent))}
    .split{
      display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start
    }
    .list-check{display:grid;gap:10px;margin:14px 0 0;padding:0;list-style:none}
    .list-check li{position:relative;padding-left:24px;color:var(--muted);line-height:1.7}
    .list-check li::before{content:"✓";position:absolute;left:0;top:0;color:var(--brand);font-weight:800}
    .timeline{display:grid;gap:12px}
    .timeline-item{padding:18px;display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start}
    .timeline-item .dot{width:12px;height:12px;border-radius:50%;margin-top:6px;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 0 0 6px rgba(31,107,255,.08)}
    .timeline-item h3{margin:0 0 6px}
    .timeline-item p{margin:0;color:var(--muted);line-height:1.7}
    .cases,.reviews,.articles,.faq,.price,.contact,.links-grid{display:grid;gap:16px}
    .case-grid,.review-grid,.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .case-card,.review-card,.article-card{padding:20px}
    .case-card .meta,.review-card .meta{display:flex;align-items:center;gap:10px;margin-top:12px;color:var(--muted);font-size:13px;flex-wrap:wrap}
    .quote-card{
      padding:18px;background:linear-gradient(180deg,#fff,#f7fbff);
    }
    .review-card .avatar{
      width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--brand),var(--brand-2));
      display:inline-flex;align-items:center;justify-content:center;color:#fff;font-weight:800;margin-bottom:12px
    }
    .accordion-item{overflow:hidden}
    .faq-item{padding:0}
    .faq-q{
      width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;border:0;background:transparent;
      padding:18px 20px;font:inherit;color:var(--text);cursor:pointer;text-align:left
    }
    .faq-q span{font-weight:700}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;padding:0 20px}
    .faq-a p{margin:0 0 18px;color:var(--muted);line-height:1.8}
    .faq-item.open .faq-a{max-height:220px}
    .faq-item.open .chev{transform:rotate(180deg)}
    .chev{transition:.2s}
    .form{
      display:grid;grid-template-columns:repeat(2,1fr);gap:14px
    }
    .field{display:grid;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-size:14px;font-weight:700}
    input,select,textarea{
      width:100%;padding:13px 14px;border-radius:14px;border:1px solid var(--line);background:#fff;color:var(--text);
      font:inherit;outline:none;transition:.2s
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(31,107,255,.65);box-shadow:0 0 0 4px rgba(31,107,255,.08)}
    textarea{min-height:124px;resize:vertical}
    .contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:16px}
    .support-panel{padding:22px;background:linear-gradient(135deg,#0f1b37,#243f8a 55%,#7b3ff2);color:#fff}
    .support-panel p,.support-panel li{color:rgba(255,255,255,.86)}
    .support-panel .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.24)}
    .footer{
      margin-top:22px;padding:18px 0 26px;background:linear-gradient(180deg,#f6f8fc,#edf2fb);border-top:1px solid var(--line);color:var(--text)
    }
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr 1fr;gap:16px}
    .footer a{color:var(--text)}
    .footer .muted{color:var(--muted)}
    .footer small{color:var(--muted);line-height:1.7}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:80;display:grid;gap:10px
    }
    .floating a,.floating button{
      width:52px;height:52px;border-radius:16px;border:0;display:inline-flex;align-items:center;justify-content:center;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 12px 28px rgba(31,107,255,.25);cursor:pointer
    }
    .floating .small{width:52px;height:52px}
    .topbar-links{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
    .topbar-links a{padding:12px 14px;border-radius:16px;background:#fff;border:1px solid var(--line);color:var(--text)}
    .articles ul{margin:0;padding-left:18px;color:var(--muted);line-height:1.9}
    .service-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .sticky-note{padding:14px 16px;border-radius:18px;background:linear-gradient(135deg,rgba(35,197,255,.1),rgba(123,63,242,.1));border:1px solid rgba(31,107,255,.14)}
    .reveal{opacity:0;transform:translateY(14px);transition:all .55s ease}
    .reveal.in{opacity:1;transform:none}
    @media (max-width: 1024px){
      .hero-grid,.split,.contact-grid,.footer-grid,.case-grid,.review-grid,.article-grid,.grid-4,.service-grid,.grid-3,.steps,.topbar-links{grid-template-columns:1fr 1fr}
      .footer-grid,.contact-grid,.hero-grid{gap:14px}
    }
    @media (max-width: 768px){
      .nav-links{display:none}
      .nav-links.open{display:flex;position:absolute;left:20px;right:20px;top:76px;background:#fff;padding:14px;border:1px solid var(--line);border-radius:18px;flex-direction:column;align-items:flex-start;box-shadow:var(--shadow)}
      .menu-toggle{display:inline-flex}
      .nav{position:relative}
      .hero-grid,.split,.contact-grid,.footer-grid,.case-grid,.review-grid,.article-grid,.grid-4,.service-grid,.grid-3,.steps,.topbar-links,.form{grid-template-columns:1fr}
      .hero-main{padding:24px}
      .hero-metrics{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
      .floating{right:12px;bottom:12px}
    }