:root{
      --bg:#f6f8fc;
      --surface:#ffffff;
      --surface-2:#f1f5ff;
      --text:#162033;
      --muted:#5b667c;
      --line:#dce4f2;
      --brand:#2563eb;
      --brand-2:#ff5b5f;
      --brand-3:#0ea5a6;
      --accent:#f59e0b;
      --shadow:0 18px 50px rgba(17,32,67,.10);
      --shadow-soft:0 10px 24px rgba(17,32,67,.08);
      --radius:20px;
      --radius-sm:14px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(37,99,235,.10), transparent 28%),
        radial-gradient(circle at top right, rgba(255,91,95,.08), transparent 22%),
        linear-gradient(180deg, #f8fbff 0%, #f6f8fc 45%, #f7f8fd 100%);
      line-height:1.7;
    }
    img{max-width:100%;display:block}
    a{color:inherit;text-decoration:none}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:blur(16px);
      background:rgba(246,248,252,.82);
      border-bottom:1px solid rgba(220,228,242,.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:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:var(--shadow-soft)}
    .brand strong{font-size:1.02rem;display:block}
    .brand span{display:block;font-size:.82rem;color:var(--muted)}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:.95rem;color:#26324b;padding:8px 10px;border-radius:999px;transition:.25s}
    .nav-links a:hover,.nav-links a:focus{background:#eaf1ff;color:var(--brand)}
    .nav-actions{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:11px 16px;font-weight:700;cursor:pointer;transition:.25s;
      box-shadow:none;background:#fff;color:var(--text)
    }
    .btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-soft)}
    .btn-primary{background:linear-gradient(135deg,var(--brand),#4f8cff);color:#fff}
    .btn-secondary{background:linear-gradient(135deg,#ff6b6f,#ff8f4f);color:#fff}
    .menu-btn{display:none}
    .hero{
      padding:42px 0 28px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.25fr .75fr;gap:22px;align-items:stretch;
    }
    .hero-main,.hero-side,.panel,.card,.table-wrap,.faq-item,.review,.article,.step,.pricing,.timeline,.form-card{
      background:rgba(255,255,255,.92);
      border:1px solid rgba(220,228,242,.95);
      border-radius:var(--radius);
      box-shadow:var(--shadow-soft);
    }
    .hero-main{padding:28px;position:relative;overflow:hidden}
    .hero-main:before,.hero-main:after{
      content:"";position:absolute;border-radius:50%;
      background:radial-gradient(circle, rgba(37,99,235,.16), transparent 62%);
      pointer-events:none;
    }
    .hero-main:before{width:240px;height:240px;right:-80px;top:-70px}
    .hero-main:after{width:180px;height:180px;right:120px;bottom:-80px;background:radial-gradient(circle, rgba(255,91,95,.12), transparent 62%)}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:7px 12px;border-radius:999px;
      background:#eef4ff;color:#1e40af;font-size:.88rem;font-weight:700;
    }
    h1{font-size:clamp(2rem,5vw,3.5rem);line-height:1.12;margin:16px 0 14px;letter-spacing:-.03em}
    .lead{font-size:1.05rem;color:var(--muted);max-width:62ch;margin:0 0 20px}
    .hero-cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:20px 0 18px}
    .hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
    .pill{padding:10px 14px;border-radius:999px;background:#f3f7ff;border:1px solid #dfe8fb;color:#31415f;font-size:.92rem}
    .hero-side{padding:18px;display:grid;gap:14px;align-content:start}
    .mini-stat{
      padding:16px;border-radius:18px;background:linear-gradient(135deg,#f6f9ff,#ffffff);
      border:1px solid #e0e9fb
    }
    .mini-stat strong{display:block;font-size:1.4rem}
    .mini-stat span{color:var(--muted);font-size:.92rem}
    .hero-image-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .hero-image-row img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:16px;border:1px solid #e4ebf8}
    section{padding:18px 0 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:16px;flex-wrap:wrap}
    .section-head h2{margin:0;font-size:1.8rem;line-height:1.15}
    .section-head p{margin:0;color:var(--muted);max-width:72ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .card,.panel,.article,.step,.review,.faq-item,.pricing,.timeline,.form-card{padding:18px}
    .card:hover,.panel:hover,.article:hover,.step:hover,.review:hover{transform:translateY(-2px);transition:.25s;box-shadow:var(--shadow)}
    .icon-badge{
      width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg,#eaf1ff,#fff0f0);color:var(--brand);font-weight:900;margin-bottom:12px
    }
    .card h3,.panel h3,.article h3,.step h3,.review h3,.faq-item summary{margin:0 0 8px;font-size:1.08rem}
    .card p,.panel p,.article p,.step p,.review p,.pricing p,.timeline p,.faq-item .answer{margin:0;color:var(--muted)}
    .section-band{
      margin-top:16px;
      background:linear-gradient(135deg,#fdf2f2,#f2f7ff 55%,#effcf9);
      border:1px solid #e4ebf8;
      border-radius:24px;
      padding:20px;
    }
    .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .stat{
      padding:18px;border-radius:18px;background:#fff;border:1px solid #e1e9f7
    }
    .stat strong{display:block;font-size:1.5rem}
    .stat span{color:var(--muted);font-size:.92rem}
    .table-wrap{overflow:auto}
    table{width:100%;border-collapse:collapse;min-width:820px}
    th,td{padding:14px 12px;border-bottom:1px solid #e5ebf6;text-align:left;vertical-align:top}
    th{background:#f4f7ff;color:#24324c}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid #dfe8fb;color:#33415e}
    .timeline{position:relative}
    .timeline-list{display:grid;gap:14px}
    .timeline-item{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start}
    .dot{width:12px;height:12px;border-radius:50%;margin-top:8px;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 0 0 6px rgba(37,99,235,.08)}
    .faq-item{padding:0;overflow:hidden}
    .faq-item summary{
      list-style:none;cursor:pointer;padding:18px;font-weight:700;display:flex;justify-content:space-between;gap:12px
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";color:var(--brand);font-size:1.1rem}
    .faq-item[open] summary:after{content:"－"}
    .answer{padding:0 18px 18px}
    .reviews,.articles,.steps,.faq-list{display:grid;gap:14px}
    .review .meta{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:10px}
    .stars{color:#f59e0b;letter-spacing:2px;font-size:1rem}
    .form-card form{display:grid;gap:12px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    input,select,textarea{
      width:100%;padding:13px 14px;border:1px solid #d8e1f1;border-radius:14px;
      background:#fff;color:var(--text);font:inherit;outline:none
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#7aa6ff;box-shadow:0 0 0 4px rgba(37,99,235,.10)}
    .footer-cta{
      display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
      padding:20px;border-radius:24px;background:linear-gradient(135deg,#1e3a8a,#2563eb 58%,#ff5b5f);
      color:#fff;margin-top:20px
    }
    .footer-cta p{margin:0;color:rgba(255,255,255,.9)}
    footer{
      margin-top:18px;
      padding:22px 0 28px;
      background:#111827;
      color:#e5edf9;
      border-top:1px solid rgba(255,255,255,.08);
    }
    footer a{color:#cfe0ff}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px;align-items:start}
    .footer-grid h3{margin:0 0 10px;font-size:1.02rem}
    .footer-grid p,.footer-grid li{color:#c8d3e6}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:8px 10px;border-radius:999px;background:rgba(255,255,255,.06)}
    .copyright{margin-top:18px;padding-top:14px;border-top:1px solid rgba(255,255,255,.08);color:#b9c7dc;font-size:.92rem}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .floating a,.floating button{
      width:52px;height:52px;border-radius:18px;border:0;cursor:pointer;
      display:grid;place-items:center;box-shadow:var(--shadow);background:#fff;color:var(--brand);font-size:1.05rem
    }
    .kefu{
      position:fixed;left:16px;bottom:16px;z-index:60;
      width:min(310px, calc(100vw - 32px));
      background:#fff;border:1px solid #dfe8fb;border-radius:22px;box-shadow:var(--shadow);overflow:hidden
    }
    .kefu-head{padding:14px 16px;background:linear-gradient(135deg,#eff5ff,#fff1f2);display:flex;justify-content:space-between;align-items:center;gap:10px}
    .kefu-body{padding:14px 16px;display:grid;gap:10px}
    .kefu-body img{width:100%;max-width:180px;aspect-ratio:1/1;object-fit:cover;border-radius:16px;border:1px solid #e5ebf6}
    .badge-line{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
    .small{font-size:.92rem;color:var(--muted)}
    .reveal{opacity:0;transform:translateY(18px);transition:.7s ease}
    .reveal.show{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.grid-4,.grid-3,.grid-2,.stats,.footer-grid{grid-template-columns:1fr 1fr}
      .hero-side{grid-template-columns:1fr 1fr}
      .hero-image-row{grid-column:1/-1}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
    }
    @media (max-width: 720px){
      .hero-grid,.grid-4,.grid-3,.grid-2,.stats,.footer-grid,.hero-side,.form-grid{grid-template-columns:1fr}
      .hero{padding-top:24px}
      .hero-main{padding:22px}
      .nav{gap:10px}
      .brand span{display:none}
      .hero-cta,.footer-cta{align-items:stretch}
      .btn{width:100%}
      .nav-actions{width:100%}
      .nav.open .nav-links{
        display:flex;position:absolute;left:16px;right:16px;top:72px;flex-direction:column;
        background:#fff;padding:12px;border:1px solid #dfe8fb;border-radius:18px;box-shadow:var(--shadow)
      }
      header{position:sticky}
      .floating{right:10px;bottom:10px}
      .kefu{left:10px;bottom:78px}
    }