:root{
      --bg:#f7f8fc;
      --bg2:#eef4ff;
      --card:#ffffff;
      --text:#172033;
      --muted:#5f6b86;
      --line:#dce4f2;
      --primary:#2b6dff;
      --primary2:#19b6b1;
      --accent:#ffb347;
      --shadow:0 18px 40px rgba(23,32,51,.08);
      --shadow2:0 10px 24px rgba(43,109,255,.12);
      --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;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(43,109,255,.10), transparent 30%),
        radial-gradient(circle at top right, rgba(25,182,177,.10), transparent 26%),
        linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
      line-height:1.7;
    }
    a{color:var(--primary);text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(100% - 32px, var(--container));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:saturate(180%) blur(14px);
      background:rgba(255,255,255,.78);
      border-bottom:1px solid rgba(220,228,242,.8);
    }
    .nav-bar{
      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 .ai-page-logo{width:42px;flex:none}
    .brand-text{display:flex;flex-direction:column;min-width:0}
    .brand-text strong{font-size:18px;line-height:1.1}
    .brand-text span{font-size:12px;color:var(--muted)}
    .nav-toggle{
      display:none;border:1px solid var(--line);background:#fff;color:var(--text);
      border-radius:12px;padding:10px 12px;font-size:14px
    }
    .nav-links{
      display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end
    }
    .nav-links a{color:var(--text);font-size:14px;font-weight:600;opacity:.88}
    .nav-links a:hover,.nav-links a:focus{color:var(--primary)}
    .home-link{padding:10px 14px;border-radius:999px;background:linear-gradient(135deg,var(--primary),#4f8cff);color:#fff!important;box-shadow:var(--shadow2)}
    .hero{
      position:relative;overflow:hidden;
      padding:30px 0 18px;
    }
    .hero::before,.hero::after{
      content:"";position:absolute;border-radius:50%;filter:blur(10px);pointer-events:none
    }
    .hero::before{width:180px;height:180px;right:-40px;top:20px;background:rgba(43,109,255,.10)}
    .hero::after{width:220px;height:220px;left:-70px;bottom:-60px;background:rgba(25,182,177,.12)}
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch;
    }
    .hero-main,.hero-side,.card,.panel,.quote,.faq-item,.review,.article,.step,.price,.match,.compare,.form-wrap,.timeline-item,.metric,.service{
      background:rgba(255,255,255,.92);
      border:1px solid rgba(220,228,242,.9);
      box-shadow:var(--shadow);
    }
    .hero-main{border-radius:28px;padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:rgba(43,109,255,.10);color:#1d57d8;font-size:13px;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(30px,4vw,54px);line-height:1.06;letter-spacing:-.03em}
    .hero p{margin:0;color:var(--muted);font-size:16px}
    .hero-actions{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;border:1px solid transparent;
      font-weight:700;font-size:14px;cursor:pointer;transition:.25s ease;
    }
    .btn-primary{background:linear-gradient(135deg,var(--primary),#547dff);color:#fff;box-shadow:var(--shadow2)}
    .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:24px}
    .mini{
      padding:14px;border-radius:18px;background:linear-gradient(180deg,#fff, #f6f9ff);
      border:1px solid var(--line)
    }
    .mini strong{display:block;font-size:18px;margin-bottom:4px}
    .mini span{color:var(--muted);font-size:13px}
    .hero-side{border-radius:28px;padding:22px;display:grid;gap:14px}
    .side-top{
      border-radius:20px;padding:18px;background:linear-gradient(135deg, rgba(43,109,255,.10), rgba(25,182,177,.10));
      border:1px solid rgba(43,109,255,.12)
    }
    .side-top h2{margin:0 0 8px;font-size:20px}
    .side-top p{margin:0;color:var(--muted);font-size:14px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{
      padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--text);font-size:13px
    }
    .section{padding:22px 0}
    .section h2{margin:0 0 10px;font-size:clamp(24px,2.5vw,34px);line-height:1.15}
    .section .lead{margin:0 0 18px;color:var(--muted)}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .metric,.service,.article,.review,.price,.match,.compare,.form-wrap,.panel,.timeline-item,.faq-item,.step,.quote{
      border-radius:22px;padding:20px
    }
    .metric strong,.service h3,.article h3,.review h3,.price h3,.match h3,.compare h3,.panel h3,.step h3{margin:0 0 8px;font-size:18px}
    .metric p,.service p,.article p,.review p,.price p,.match p,.compare p,.panel p,.step p,.timeline-item p,.quote p{margin:0;color:var(--muted)}
    .metric .num{font-size:30px;font-weight:800;color:#14306b;margin-bottom:8px}
    .icon{
      width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(43,109,255,.14), rgba(25,182,177,.16));color:#1749c3;font-weight:800;margin-bottom:12px
    }
    .section-soft{
      background:linear-gradient(180deg, rgba(255,255,255,.5), rgba(238,244,255,.75));
      border-top:1px solid rgba(220,228,242,.9);
      border-bottom:1px solid rgba(220,228,242,.9);
    }
    .two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step .num-step{
      display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:12px;
      background:linear-gradient(135deg,var(--primary),#58a0ff);color:#fff;font-weight:800;margin-bottom:12px
    }
    .table-wrap{overflow-x:auto;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f5f8ff;color:#19316f}
    td{color:var(--text)}
    .badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:rgba(25,182,177,.12);color:#0b7b77;font-size:12px;font-weight:700}
    .compare-highlight{
      display:grid;grid-template-columns:1fr 260px;gap:16px;align-items:center
    }
    .rating{
      padding:18px;border-radius:20px;background:linear-gradient(135deg,#eef6ff,#e6fffc);border:1px solid rgba(43,109,255,.16)
    }
    .rating strong{display:block;font-size:26px;margin-bottom:6px}
    details.faq-item{padding:0;overflow:hidden}
    details summary{list-style:none;cursor:pointer;padding:18px 20px;font-weight:700;color:var(--text)}
    details summary::-webkit-details-marker{display:none}
    details .faq-body{padding:0 20px 18px;color:var(--muted)}
    .faq-list{display:grid;gap:12px}
    .testimonial{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review{min-height:100%}
    .review .role{color:#1d57d8;font-weight:700;font-size:13px;margin-bottom:10px}
    .articles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .article .meta{font-size:12px;color:var(--muted);margin-bottom:10px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field{display:grid;gap:8px}
    label{font-size:13px;font-weight:700;color:var(--text)}
    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 ease
    }
    textarea{min-height:128px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(43,109,255,.5);box-shadow:0 0 0 4px rgba(43,109,255,.08)}
    .full{grid-column:1/-1}
    .foot{
      margin-top:12px;padding:22px 0 28px;background:#f3f6fd;border-top:1px solid var(--line);color:#2b3550
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px}
    .footer-grid a{color:#243b75}
    .contact-card{display:grid;grid-template-columns:120px 1fr;gap:14px;align-items:center}
    .qrcode{width:120px;border-radius:16px;overflow:hidden;border:1px solid var(--line);background:#fff}
    .float-tools{
      position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:16px;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--primary),#4f8cff);color:#fff;box-shadow:var(--shadow2);border:none;cursor:pointer;font-size:14px;font-weight:800
    }
    .customer-float{
      position:fixed;left:18px;bottom:18px;z-index:60;max-width:260px;
      background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:20px;padding:14px;box-shadow:var(--shadow)
    }
    .customer-float strong{display:block;margin-bottom:6px}
    .customer-float span{display:block;color:var(--muted);font-size:13px}
    .customer-float a{display:inline-flex;margin-top:10px;font-weight:700}
    .reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .reveal.in{opacity:1;transform:none}
    .timeline{display:grid;gap:12px}
    .timeline-item{display:grid;grid-template-columns:88px 1fr;gap:14px;align-items:start}
    .timeline-item .when{font-weight:800;color:#1641a8}
    .service-net{
      display:grid;grid-template-columns:repeat(5,1fr);gap:12px
    }
    .service-net .net-item{padding:16px;border-radius:18px;background:#fff;border:1px solid var(--line);text-align:center;font-weight:700}
    @media (max-width: 1024px){
      .hero-grid,.two-col,.grid-4,.grid-3,.steps,.testimonial,.articles,.footer-grid,.compare-highlight,.service-net{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 760px){
      .nav-toggle{display:inline-flex}
      .nav-links{
        display:none;position:absolute;left:16px;right:16px;top:66px;background:#fff;border:1px solid var(--line);
        border-radius:18px;padding:14px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start
      }
      .nav-links.show{display:flex}
      .hero{padding-top:16px}
      .hero-main,.hero-side{padding:22px;border-radius:22px}
      .hero-points,.grid-4,.grid-3,.steps,.testimonial,.articles,.footer-grid,.form-grid,.timeline-item,.service-net,.compare-highlight,.two-col{grid-template-columns:1fr}
      .customer-float{display:none}
      .float-tools{right:12px;bottom:12px}
      table{min-width:680px}
    }