:root{
      --bg:#f6f8fc;
      --panel:#ffffff;
      --panel-2:#f2f6ff;
      --text:#172033;
      --muted:#5c677d;
      --line:#dbe4f3;
      --brand:#1864ff;
      --brand-2:#ff5f6d;
      --brand-3:#11b6a5;
      --shadow:0 18px 40px rgba(18,43,92,.10);
      --radius:22px;
      --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(24,100,255,.12), transparent 28%),
        radial-gradient(circle at top right, rgba(255,95,109,.10), transparent 26%),
        linear-gradient(180deg,#f7f9ff 0%, #f4f7fb 45%, #f7f9fd 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    header, main, footer{position:relative; z-index:1}
    .topbar{
      position:sticky; top:0; z-index:50;
      backdrop-filter: blur(16px);
      background:rgba(247,249,253,.82);
      border-bottom:1px solid rgba(219,228,243,.8);
    }
    .nav{
      display:flex; align-items:center; justify-content:space-between; gap:18px;
      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:0 8px 22px rgba(16,46,116,.08)}
    .brand-text{min-width:0}
    .brand-text strong{display:block; font-size:1.02rem; letter-spacing:.4px}
    .brand-text span{display:block; color:var(--muted); font-size:.82rem; margin-top:2px}
    .nav-actions{display:flex; align-items:center; gap:10px}
    .menu-btn{
      display:none; border:1px solid var(--line); background:#fff; color:var(--text);
      border-radius:14px; width:44px; height:44px; cursor:pointer; box-shadow:0 8px 18px rgba(20,40,90,.06)
    }
    .menu-btn span{display:block; width:18px; height:2px; background:var(--text); margin:4px auto; border-radius:2px}
    .nav-links{
      display:flex; flex-wrap:wrap; align-items:center; justify-content:center; gap:4px 6px;
    }
    .nav-links a{
      padding:9px 12px; border-radius:999px; color:#30405f; font-size:.95rem;
      transition:.22s ease; border:1px solid transparent;
    }
    .nav-links a:hover{background:#fff; border-color:var(--line); color:var(--brand); box-shadow:0 8px 20px rgba(24,100,255,.08)}
    .btn{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      border:1px solid transparent; border-radius:16px; padding:13px 18px; font-weight:700;
      transition:.25s ease; cursor:pointer; white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#5f8cff); color:#fff; box-shadow:0 14px 28px rgba(24,100,255,.26)}
    .btn-primary:hover{transform:translateY(-2px); filter:saturate(1.08)}
    .btn-ghost{background:#fff; color:var(--text); border-color:var(--line)}
    .btn-ghost:hover{transform:translateY(-2px); box-shadow:0 14px 24px rgba(18,43,92,.10)}
    .hero{padding:36px 0 18px}
    .hero-grid{
      display:grid; grid-template-columns:1.2fr .8fr; gap:18px; align-items:stretch;
    }
    .hero-main,.hero-side,.card,.section-box,.faq-item,.review,.article,.price-card,.form-card,.timeline-item,.compare-table{
      background:rgba(255,255,255,.88); border:1px solid rgba(219,228,243,.92); box-shadow:var(--shadow); backdrop-filter: blur(10px);
    }
    .hero-main{border-radius:32px; padding:34px}
    .eyebrow{
      display:inline-flex; align-items:center; gap:8px; padding:8px 12px; border-radius:999px;
      background:linear-gradient(135deg, rgba(24,100,255,.12), rgba(255,95,109,.10)); color:#234; font-weight:700; font-size:.92rem;
    }
    h1{margin:18px 0 14px; font-size:clamp(2.1rem, 4vw, 4.1rem); line-height:1.06; letter-spacing:-.03em}
    .hero p{margin:0; color:var(--muted); line-height:1.82; font-size:1.02rem}
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px; margin-top:22px}
    .hero-meta{display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin-top:24px}
    .meta{
      border-radius:20px; padding:16px; background:linear-gradient(180deg,#fff,#f7faff); border:1px solid var(--line)
    }
    .meta strong{display:block; font-size:1.25rem}
    .meta span{display:block; color:var(--muted); font-size:.9rem; margin-top:5px}
    .hero-side{border-radius:28px; padding:22px; display:grid; gap:14px}
    .side-card{
      border-radius:20px; padding:18px; background:linear-gradient(180deg,#f9fbff,#fff); border:1px solid var(--line)
    }
    .side-card h3,.section-title h2{margin:0 0 10px; font-size:1.35rem}
    .section{padding:18px 0}
    .section-box{border-radius:30px; padding:28px}
    .section-title{display:flex; align-items:end; justify-content:space-between; gap:16px; margin-bottom:18px}
    .section-title p{margin:0; color:var(--muted); line-height:1.75}
    .grid-4{display:grid; grid-template-columns:repeat(4,1fr); gap:14px}
    .grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:14px}
    .grid-2{display:grid; grid-template-columns:repeat(2,1fr); gap:14px}
    .card{border-radius:22px; padding:20px; transition:.25s ease}
    .card:hover,.review:hover,.article:hover,.faq-item:hover,.price-card:hover{transform:translateY(-3px)}
    .card .icon{
      width:46px; height:46px; border-radius:15px; display:grid; place-items:center; margin-bottom:12px;
      background:linear-gradient(135deg, rgba(24,100,255,.14), rgba(17,182,165,.14));
      color:var(--brand); font-weight:800;
    }
    .card h3{margin:0 0 10px; font-size:1.08rem}
    .card p,.review p,.article p,.price-card p,.timeline-item p,.form-card p,.faq-item p,li{color:var(--muted); line-height:1.75}
    .chips{display:flex; flex-wrap:wrap; gap:8px; margin-top:14px}
    .chip{padding:7px 10px; border-radius:999px; background:#f1f5ff; color:#29436c; font-size:.86rem; border:1px solid #dfe8fb}
    .stats{display:grid; grid-template-columns:repeat(4,1fr); gap:14px}
    .stat{padding:18px 16px; border-radius:22px; background:linear-gradient(180deg,#fff,#f7faff); border:1px solid var(--line)}
    .stat strong{font-size:1.55rem; display:block}
    .stat span{display:block; margin-top:6px; color:var(--muted)}
    .compare-wrap{overflow:auto}
    table{width:100%; border-collapse:collapse; min-width:760px}
    th,td{padding:14px 12px; border-bottom:1px solid var(--line); text-align:left; vertical-align:top}
    th{background:#f4f7ff; color:#1f2c48}
    .highlight{color:#0b7a68; font-weight:700}
    .section-plain{padding:14px 0}
    .timeline{display:grid; grid-template-columns:repeat(4,1fr); gap:14px}
    .timeline-item{border-radius:22px; padding:18px}
    .timeline-item .step{display:inline-flex; padding:6px 10px; border-radius:999px; background:#eef4ff; color:#244a9a; font-weight:700; margin-bottom:12px}
    details{
      background:#fff; border:1px solid var(--line); border-radius:18px; overflow:hidden
    }
    summary{
      cursor:pointer; list-style:none; padding:16px 18px; font-weight:700; display:flex; justify-content:space-between; gap:12px
    }
    summary::-webkit-details-marker{display:none}
    details[open] summary{background:#f6f9ff}
    details .answer{padding:0 18px 16px}
    .reviews,.articles,.prices{display:grid; grid-template-columns:repeat(3,1fr); gap:14px}
    .review,.article,.price-card{border-radius:22px; padding:18px}
    .review .tag,.article .tag,.price-card .tag{display:inline-flex; padding:6px 10px; border-radius:999px; background:#eef4ff; color:#245; font-size:.84rem; margin-bottom:10px}
    .form-grid{display:grid; grid-template-columns:1.02fr .98fr; gap:14px}
    .form-card{border-radius:26px; padding:22px}
    form{display:grid; gap:12px}
    .field{display:grid; gap:7px}
    label{font-weight:700; font-size:.95rem}
    input,select,textarea{
      width:100%; border:1px solid var(--line); border-radius:14px; padding:13px 14px; background:#fff; color:var(--text);
      font:inherit; outline:none; transition:.2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(24,100,255,.6); box-shadow:0 0 0 4px rgba(24,100,255,.08)}
    textarea{min-height:126px; resize:vertical}
    .footer{
      margin-top:14px; padding:24px 0 30px; background:#eef3fb; border-top:1px solid var(--line); color:#23314f
    }
    .footer a{color:#173d8f}
    .footer-grid{display:grid; grid-template-columns:1.1fr .9fr .8fr; gap:18px}
    .footer small{color:#52617e; line-height:1.7}
    .footer .links{display:flex; flex-wrap:wrap; gap:10px}
    .footer .links a{padding:8px 11px; border-radius:999px; background:#fff; border:1px solid var(--line)}
    .sticky-tools{
      position:fixed; right:16px; bottom:16px; z-index:60; display:grid; gap:10px
    }
    .tool{
      width:48px; height:48px; border-radius:16px; display:grid; place-items:center; background:#fff; border:1px solid var(--line);
      box-shadow:0 12px 26px rgba(18,43,92,.12)
    }
    .floating-contact{
      position:fixed; left:16px; bottom:16px; z-index:60; width:min(320px, calc(100% - 32px));
      display:none; border-radius:22px; padding:14px; background:#fff; border:1px solid var(--line); box-shadow:var(--shadow)
    }
    .floating-contact.show{display:block}
    .floating-contact .row{display:flex; gap:12px; align-items:center}
    .floating-contact img{width:92px; height:92px; object-fit:cover; border-radius:16px; border:1px solid var(--line)}
    .muted{color:var(--muted)}
    .anchor{scroll-margin-top:88px}
    .mobile-panel{display:none}
    .badge-line{display:flex; flex-wrap:wrap; gap:8px; margin-top:14px}
    .badge{padding:7px 10px; border-radius:12px; background:#fff; border:1px solid var(--line); color:#2f425f; font-size:.86rem}
    .service-network{display:grid; grid-template-columns:repeat(5,1fr); gap:10px}
    .network-item{padding:14px; border-radius:18px; background:#fff; border:1px solid var(--line); text-align:center; color:#29436c}
    @media (max-width: 1080px){
      .hero-grid,.form-grid,.footer-grid{grid-template-columns:1fr}
      .grid-4,.grid-3,.reviews,.articles,.prices,.timeline,.stats,.grid-2,.service-network{grid-template-columns:repeat(2,1fr)}
      .nav-links{display:none}
      .menu-btn{display:inline-grid; place-items:center}
      .mobile-panel{display:none; padding:0 0 16px}
      .mobile-panel.open{display:block}
      .mobile-panel .panel{
        display:flex; flex-wrap:wrap; gap:8px; padding:14px 0 0
      }
      .mobile-panel a{background:#fff; border:1px solid var(--line); border-radius:999px; padding:9px 12px; color:#2c4060}
    }
    @media (max-width: 720px){
      .container{width:min(var(--container), calc(100% - 22px))}
      .hero-main,.section-box,.form-card{padding:20px}
      .hero-meta,.grid-4,.grid-3,.reviews,.articles,.prices,.timeline,.stats,.grid-2,.service-network{grid-template-columns:1fr}
      .section-title{flex-direction:column; align-items:flex-start}
      .nav{padding:10px 0}
      .brand img{width:38px; height:38px}
      .hero{padding-top:22px}
      .hero-actions .btn{width:100%}
      .sticky-tools{right:12px; bottom:12px}
    }
    .reveal{opacity:0; transform:translateY(16px); transition:.7s ease}
    .reveal.visible{opacity:1; transform:none}