:root{
      --bg:#f4f7fc;
      --panel:#ffffff;
      --panel-2:#f9fbff;
      --text:#132033;
      --muted:#5f6d82;
      --line:#dfe7f3;
      --brand:#2b6cff;
      --brand-2:#12c2e9;
      --accent:#ffb703;
      --ok:#18a957;
      --shadow:0 16px 40px rgba(20,40,90,.10);
      --shadow-soft:0 10px 22px rgba(20,40,90,.08);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(43,108,255,.12), transparent 26%),
        radial-gradient(circle at top right, rgba(18,194,233,.10), transparent 24%),
        linear-gradient(180deg,#fbfdff 0%, #f4f7fc 52%, #eef3fb 100%);
    }
    a{color:var(--brand);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:50;
      backdrop-filter:saturate(150%) blur(14px);
      background:rgba(244,247,252,.78);
      border-bottom:1px solid rgba(223,231,243,.85);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:74px;
    }
    .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:var(--shadow-soft)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);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:#22314b;padding:8px 10px;border-radius:999px;transition:.25s}
    .nav-links a:hover{background:rgba(43,108,255,.08);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:700;font-size:14px;transition:.25s;
      cursor:pointer;white-space:nowrap
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#5a8cff);color:#fff;box-shadow:0 12px 24px rgba(43,108,255,.22)}
    .btn-primary:hover{transform:translateY(-1px);box-shadow:0 16px 28px rgba(43,108,255,.28)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:#b8c8e5;transform:translateY(-1px)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px}
    .hero{
      position:relative;overflow:hidden;
      padding:42px 0 24px;
    }
    .hero::before,.hero::after{
      content:"";position:absolute;border-radius:50%;
      pointer-events:none;filter:blur(2px)
    }
    .hero::before{width:300px;height:300px;right:-90px;top:-80px;background:radial-gradient(circle, rgba(43,108,255,.16), transparent 65%)}
    .hero::after{width:260px;height:260px;left:-100px;bottom:-120px;background:radial-gradient(circle, rgba(18,194,233,.12), transparent 68%)}
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch;
    }
    .hero-copy,.hero-panel,.card,.section-card,.faq-item,.review-card,.timeline-item,.article-card,.contact-card{
      background:rgba(255,255,255,.86);
      border:1px solid rgba(223,231,243,.9);
      border-radius:var(--radius);
      box-shadow:var(--shadow-soft);
    }
    .hero-copy{padding:34px}
    .kicker{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;background:rgba(43,108,255,.08);
      color:#204aa8;font-size:13px;font-weight:700
    }
    h1{margin:18px 0 14px;font-size:clamp(32px,5vw,54px);line-height:1.05;letter-spacing:-.03em}
    .lead{font-size:17px;line-height:1.8;color:var(--muted);margin:0 0 20px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
    .mini-stat{
      padding:14px 16px;border-radius:18px;background:linear-gradient(180deg,#fff, #f7fbff);
      border:1px solid var(--line)
    }
    .mini-stat b{display:block;font-size:20px;margin-bottom:4px}
    .mini-stat span{font-size:13px;color:var(--muted);line-height:1.4}
    .hero-panel{padding:18px}
    .hero-panel-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}
    .badge{display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border-radius:999px;background:rgba(24,169,87,.08);color:#127242;font-size:12px;font-weight:700}
    .stack{display:grid;gap:12px}
    .stack .item{
      padding:14px 14px 14px 16px;border-radius:18px;
      background:linear-gradient(135deg,#f8fbff,#eef5ff);border:1px solid #dbe5f4;
    }
    .item h3{margin:0 0 6px;font-size:15px}
    .item p{margin:0;color:var(--muted);font-size:13px;line-height:1.65}
    .section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:14px}
    .section-head h2{margin:0;font-size:clamp(24px,3vw,34px);line-height:1.15}
    .section-head p{margin:0;color:var(--muted);max-width:680px;line-height:1.7}
    .section-card{padding:22px}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .card{padding:18px}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.7}
    .icon-dot{
      width:42px;height:42px;border-radius:14px;margin-bottom:12px;
      background:linear-gradient(135deg,rgba(43,108,255,.14),rgba(18,194,233,.18));
      display:grid;place-items:center;font-size:18px
    }
    .pill-list{display:flex;flex-wrap:wrap;gap:10px}
    .pill-list span{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#2f4058}
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .step{padding:18px;border-radius:20px;background:linear-gradient(180deg,#fff,#f8fbff);border:1px solid var(--line);position:relative}
    .step .num{font-size:12px;font-weight:800;color:#3168d7;letter-spacing:.08em}
    .step h3{margin:10px 0 8px;font-size:17px}
    .step p{margin:0;color:var(--muted);line-height:1.7}
    .table-wrap{overflow-x:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:15px 14px;text-align:left;border-bottom:1px solid #edf2f8;vertical-align:top}
    th{background:#f7faff;font-size:14px}
    td{color:#38475c;line-height:1.65}
    .rating{display:inline-flex;align-items:center;gap:6px;font-weight:800;color:#d18b00}
    .quote{
      padding:16px;border-left:4px solid var(--brand);background:linear-gradient(135deg,#f7fbff,#eef5ff);border-radius:0 18px 18px 0
    }
    .form{
      display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px
    }
    .field{display:flex;flex-direction:column;gap:8px}
    .field.full{grid-column:1 / -1}
    label{font-size:14px;font-weight:700;color:#22314b}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;background:#fff;
      color:var(--text);padding:13px 14px;font:inherit;outline:none;transition:.2s
    }
    textarea{min-height:122px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#8fb0ff;box-shadow:0 0 0 4px rgba(43,108,255,.10)}
    .faq{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%;border:0;background:transparent;color:var(--text);padding:18px 18px;
      display:flex;align-items:center;justify-content:space-between;gap:14px;font:inherit;text-align:left;cursor:pointer
    }
    .faq-q strong{font-size:16px;line-height:1.5}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;will-change:max-height}
    .faq-a div{padding:0 18px 18px;color:var(--muted);line-height:1.8}
    .faq-item.active .faq-a{max-height:220px}
    .faq-item.active .chev{transform:rotate(180deg)}
    .chev{transition:.25s}
    .reviews,.articles,.timeline{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .review-card,.article-card,.timeline-item{padding:18px}
    .avatar{
      width:46px;height:46px;border-radius:14px;background:linear-gradient(135deg,#2b6cff,#12c2e9);color:#fff;
      display:grid;place-items:center;font-weight:800;margin-bottom:12px
    }
    .review-card h3,.article-card h3{margin:0 0 8px;font-size:17px}
    .meta{font-size:13px;color:#6b778b;margin-bottom:10px}
    .footer{
      margin-top:10px;padding:24px 0 34px;border-top:1px solid rgba(223,231,243,.9);
      background:rgba(255,255,255,.72)
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:start}
    .footer a{color:#224fbe}
    .small{font-size:13px;color:var(--muted);line-height:1.8}
    .float-tools{
      position:fixed;right:16px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:10px
    }
    .tool{
      width:52px;height:52px;border-radius:16px;border:1px solid var(--line);background:#fff;display:grid;place-items:center;
      box-shadow:var(--shadow-soft);cursor:pointer;transition:.2s;font-size:20px
    }
    .tool:hover{transform:translateY(-2px)}
    .kefu{
      position:fixed;left:16px;bottom:18px;z-index:60;background:#fff;border:1px solid var(--line);
      border-radius:22px;box-shadow:var(--shadow);padding:12px;display:flex;gap:12px;align-items:center;max-width:320px
    }
    .kefu img{width:74px;height:74px;object-fit:cover;border-radius:14px;border:1px solid var(--line)}
    .kefu strong{display:block;margin-bottom:5px}
    .kefu span{display:block;color:var(--muted);font-size:13px;line-height:1.5}
    .anchor-tags{display:flex;flex-wrap:wrap;gap:10px}
    .anchor-tags a{padding:9px 12px;border:1px solid var(--line);border-radius:999px;background:#fff;color:#30435f;font-size:13px}
    .media-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .media-card{padding:14px;background:#fff;border:1px solid var(--line);border-radius:20px}
    .media-card img{border-radius:14px}
    .scroll-note{font-size:13px;color:var(--muted);margin-top:8px}
    .mobile-only{display:none}
    @media (max-width: 1024px){
      .hero-grid,.grid-4,.steps,.reviews,.articles,.timeline,.footer-grid,.grid-3{grid-template-columns:1fr 1fr}
      .grid-2{grid-template-columns:1fr}
    }
    @media (max-width: 820px){
      .nav-links,.nav-cta{display:none}
      .menu-btn{display:inline-flex}
      .mobile-only{display:block}
      .hero-grid,.grid-4,.grid-3,.steps,.reviews,.articles,.timeline,.footer-grid,.form,.hero-points,.media-grid{grid-template-columns:1fr}
      .hero-copy,.hero-panel,.section-card{padding:20px}
      .kefu{display:none}
      .float-tools{right:12px;bottom:12px}
    }
    .mobile-menu{
      display:none;border-top:1px solid var(--line);background:rgba(255,255,255,.92)
    }
    .mobile-menu.open{display:block}
    .mobile-menu .container{padding-top:12px;padding-bottom:14px}
    .mobile-menu a{
      display:block;padding:12px 0;color:#22314b;border-bottom:1px dashed #e5ecf7;font-size:15px
    }
    .mobile-menu a:last-child{border-bottom:0}
    .fade-up{opacity:0;transform:translateY(16px);transition:opacity .7s ease, transform .7s ease}
    .fade-up.show{opacity:1;transform:none}
    .chip-row{display:flex;flex-wrap:wrap;gap:10px}
    .chip{padding:8px 12px;border-radius:999px;background:linear-gradient(135deg,#fff,#f1f6ff);border:1px solid var(--line);font-size:13px;color:#31415c}