:root{
      --bg:#f6f8fb;
      --surface:#ffffff;
      --surface-2:#f2f6ff;
      --line:#dbe4f1;
      --text:#162033;
      --muted:#5f6b7d;
      --brand:#1363ff;
      --brand-2:#00b7ff;
      --accent:#ffb000;
      --shadow:0 18px 50px rgba(21,45,93,.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,#eef4ff 0%,#f8fbff 18%,#f6f8fb 100%);color:var(--text);line-height:1.7}
    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(246,248,251,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(219,228,241,.72)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px}
    .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;padding:4px;box-shadow:0 8px 20px rgba(19,99,255,.12)}
    .brand h1,.brand .brand-text{font-size:18px;line-height:1.2;margin:0;font-weight:800;letter-spacing:.2px}
    .brand small{display:block;color:var(--muted);font-weight:600;font-size:12px;margin-top:2px}
    .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);font-weight:700;transition:.2s ease}
    .nav-links a:hover{color:var(--brand)}
    .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:800;font-size:14px;transition:.22s ease;cursor:pointer;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),#4d8cff);color:#fff;box-shadow:0 14px 26px rgba(19,99,255,.25)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 30px rgba(19,99,255,.3)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:#b8c8e6;transform:translateY(-1px)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
    .hero{padding:42px 0 24px}
    .hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.card,.panel,.quote,.faq-item,.price-box,.compare,.form-box,.timeline-item,.article-item,.case-card,.review-card,.tag-cloud,.help-box{background:var(--surface);border:1px solid rgba(219,228,241,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:34px;position:relative;overflow:hidden;background:linear-gradient(180deg,#ffffff 0%,#f7fbff 100%)}
    .hero-main:before,.hero-main:after{content:"";position:absolute;border-radius:50%;background:radial-gradient(circle,rgba(19,99,255,.18),rgba(19,99,255,0) 68%)}
    .hero-main:before{width:220px;height:220px;right:-60px;top:-40px}
    .hero-main:after{width:180px;height:180px;right:140px;bottom:-70px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(19,99,255,.08);color:var(--brand);font-size:13px;font-weight:800}
    h1{margin:16px 0 14px;font-size:clamp(32px,4vw,54px);line-height:1.08;letter-spacing:-.02em}
    .lead{max-width:60ch;color:var(--muted);font-size:16px;margin:0 0 20px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:18px}
    .hero-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:18px}
    .mini{padding:14px 15px;border-radius:16px;background:var(--surface-2);border:1px solid #e3ebfa}
    .mini strong{display:block;font-size:15px;margin-bottom:4px}
    .mini span{color:var(--muted);font-size:13px}
    .hero-side{padding:22px;display:grid;gap:14px}
    .stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .stat{padding:18px;border-radius:18px;background:linear-gradient(180deg,#f9fbff,#eef5ff);border:1px solid #e1e9f7}
    .stat b{display:block;font-size:26px;line-height:1.1;color:var(--text)}
    .stat span{color:var(--muted);font-size:13px}
    .side-note{padding:18px;border-radius:18px;background:#fff7e9;border:1px solid #f2d59a;color:#6d4b00}
    .section{padding:18px 0 8px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:28px;line-height:1.2}
    .section-head p{margin:0;color:var(--muted);max-width:62ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .card{padding:20px;transition:transform .2s ease,box-shadow .2s ease}
    .card:hover,.review-card:hover,.case-card:hover,.article-item:hover,.timeline-item:hover{transform:translateY(-3px);box-shadow:0 20px 44px rgba(21,45,93,.12)}
    .card h3,.panel h3,.case-card h3,.review-card h3{margin:8px 0 8px;font-size:18px}
    .card p,.panel p,.case-card p,.review-card p,.article-item p{margin:0;color:var(--muted)}
    .icon{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(19,99,255,.12),rgba(0,183,255,.12));color:var(--brand);font-weight:900}
    .workflow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .step{padding:18px;background:linear-gradient(180deg,#fff,#f6f9ff);border:1px solid #e3ebfa;border-radius:18px}
    .step b{display:inline-flex;width:32px;height:32px;align-items:center;justify-content:center;border-radius:10px;background:var(--brand);color:#fff;margin-bottom:12px}
    .table-wrap{overflow:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:16px 14px;border-bottom:1px solid #edf1f7;text-align:left;font-size:14px;vertical-align:top}
    th{background:#f4f8ff;color:#20314f}
    .badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:#eaf2ff;color:#1251d3;font-size:12px;font-weight:800}
    .tag-cloud{padding:18px;display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:8px 12px;border-radius:999px;background:#f2f6ff;border:1px solid #dde6f8;color:#25406d;font-size:13px}
    .price-box{padding:20px}
    .price-line{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px dashed #e5edf8}
    .price-line:last-child{border-bottom:0}
    .price-line strong{font-size:15px}
    .compare{padding:22px}
    .score{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
    .stars{color:#ffb000;font-size:20px;letter-spacing:2px}
    .faq-item{padding:0;overflow:hidden}
    .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 20px;background:#fff;border:0;font:inherit;color:var(--text);cursor:pointer;text-align:left}
    .faq-a{padding:0 20px 18px;color:var(--muted);display:none}
    .faq-item.active .faq-a{display:block}
    .faq-item.active .faq-q{background:#f7fbff}
    .reviews,.cases,.articles,.timeline,.contacts{display:grid;gap:16px}
    .review-card,.case-card,.article-item,.timeline-item{padding:20px}
    .avatar{width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,#d8e7ff,#ffffff);display:grid;place-items:center;font-weight:900;color:var(--brand);margin-bottom:12px}
    .form-box{padding:22px}
    form{display:grid;gap:14px}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    label{display:block;font-size:14px;font-weight:700;margin-bottom:8px}
    input,select,textarea{width:100%;border:1px solid #d9e2f0;border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:var(--text);outline:none;transition:border-color .2s ease,box-shadow .2s ease}
    input:focus,select:focus,textarea:focus{border-color:#8eb5ff;box-shadow:0 0 0 4px rgba(19,99,255,.08)}
    textarea{min-height:124px;resize:vertical}
    .footer{margin-top:18px;padding:28px 0 34px;background:#eff4fb;border-top:1px solid #dfe7f3;color:#20314f}
    .footer a{color:#124fd3}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .9fr;gap:18px;align-items:start}
    .footer small,.footer p,.footer li{color:#4d5e79}
    .footer ul{margin:0;padding-left:18px}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .float-btn{width:52px;height:52px;border-radius:16px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;display:grid;place-items:center;box-shadow:0 16px 30px rgba(19,99,255,.28);border:0;cursor:pointer}
    .float-panel{position:fixed;right:16px;bottom:78px;z-index:60;width:min(320px,calc(100vw - 32px));display:none}
    .float-panel.open{display:block}
    .float-card{padding:16px}
    .kefu{width:100%;border-radius:16px;border:1px solid var(--line)}
    .muted{color:var(--muted)}
    .anchor{scroll-margin-top:92px}
    .center{text-align:center}
    .service-gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .service-gallery img{width:100%;border-radius:18px;border:1px solid #e2e8f4;object-fit:cover}
    .inline-links{display:flex;flex-wrap:wrap;gap:10px}
    .inline-links a{padding:8px 12px;border:1px solid #dbe4f1;border-radius:999px;background:#fff;font-size:13px}
    .mobile-only{display:none}
    @media (max-width: 980px){
      .hero-grid,.grid-4,.grid-3,.workflow,.footer-grid,.service-gallery{grid-template-columns:1fr 1fr}
      .hero-main{padding:26px}
      .nav-links{display:none}
      .menu-toggle{display:inline-flex}
      .mobile-only{display:block}
    }
    @media (max-width: 720px){
      .container{width:min(var(--container),calc(100% - 24px))}
      .hero-grid,.grid-4,.grid-3,.workflow,.footer-grid,.service-gallery,.form-grid,.hero-points,.stat-grid{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .hero{padding-top:18px}
      h1{font-size:30px}
      .hero-main,.hero-side,.card,.panel,.compare,.form-box{padding:18px}
      .floating{right:12px;bottom:12px}
      .float-panel{right:12px;bottom:74px}
    }
    .reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}
    .reveal.show{opacity:1;transform:none}