:root{
      --bg:#f4f7fb;
      --bg2:#eef3ff;
      --card:#ffffff;
      --text:#172033;
      --muted:#5d6b86;
      --line:#dce5f3;
      --brand:#5a67ff;
      --brand2:#14b8a6;
      --accent:#ff6b8b;
      --shadow:0 14px 40px rgba(40,58,120,.10);
      --radius:20px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--text);background:radial-gradient(circle at top left,#ffffff 0%, #f4f7fb 38%, #eef3ff 100%)}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px,var(--container));margin:0 auto}
    .topbar,.site-header,.site-footer,.section{position:relative}
    .topbar{background:#0f172a;color:#e6ecff;font-size:13px}
    .topbar .inner{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:10px 0;flex-wrap:wrap}
    .topbar a{color:#fff8b8}
    .site-header{backdrop-filter:blur(10px);background:rgba(244,247,251,.82);border-bottom:1px solid rgba(220,229,243,.8);position:sticky;top:0;z-index:20}
    .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;border:1px solid var(--line);box-shadow:0 8px 20px rgba(59,75,120,.08)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:3px}
    .menu-btn{display:none;border:1px solid var(--line);background:#fff;border-radius:14px;padding:10px 12px;color:var(--text)}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
    .nav-links a{font-size:14px;color:#2b3550;padding:8px 0;position:relative}
    .nav-links a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:linear-gradient(90deg,var(--brand),var(--accent));transition:.25s}
    .nav-links a:hover::after{width:100%}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer;transition:.25s ease;box-shadow:none}
    .btn-primary{color:#fff;background:linear-gradient(135deg,var(--brand),#7c3aed);box-shadow:0 12px 26px rgba(90,103,255,.25)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(90,103,255,.32)}
    .btn-ghost{background:#fff;border:1px solid var(--line);color:var(--text)}
    .btn-ghost:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
    .hero{padding:34px 0 22px}
    .hero-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:22px;align-items:stretch}
    .hero-copy,.hero-side,.card,.panel,.faq-item,.review,.article,.metric,.flow-step,.price-card{background:rgba(255,255,255,.86);border:1px solid rgba(220,229,243,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-copy{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:linear-gradient(135deg,rgba(90,103,255,.12),rgba(20,184,166,.14));color:#334155;font-size:13px;font-weight:700}
    h1{font-size:clamp(34px,5vw,58px);line-height:1.04;margin:18px 0 14px;letter-spacing:-.03em}
    .lead{font-size:17px;line-height:1.8;color:var(--muted);max-width:58ch;margin:0 0 18px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
    .mini{padding:14px;border-radius:16px;background:linear-gradient(180deg,#fff,#f8fbff);border:1px solid var(--line)}
    .mini b{display:block;font-size:16px;margin-bottom:6px}
    .mini span{font-size:13px;color:var(--muted);line-height:1.6}
    .hero-side{padding:20px;display:grid;gap:14px;align-content:start}
    .hero-side .stat{padding:16px;border-radius:16px;background:linear-gradient(135deg,#0f172a,#1e293b);color:#fff}
    .hero-side .stat .num{font-size:30px;font-weight:800}
    .hero-side .stat .lab{font-size:13px;color:#cbd5e1}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#334155}
    .section{padding:20px 0}
    .section h2{font-size:clamp(26px,3vw,36px);margin:0 0 12px}
    .section .sub{color:var(--muted);margin:0 0 18px;line-height:1.8}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .metric,.card,.review,.article,.panel,.price-card{padding:22px}
    .metric .k{font-size:30px;font-weight:800;margin-bottom:8px}
    .metric .t,.card p,.panel p,.review p,.article p,.price-card p{color:var(--muted);line-height:1.7;margin:0}
    .card h3,.panel h3,.review h3,.article h3,.price-card h3{margin:0 0 10px;font-size:19px}
    .soft{background:linear-gradient(135deg,rgba(90,103,255,.07),rgba(20,184,166,.08));border:1px solid #dbe3f8}
    .steps{counter-reset:s}
    .flow-step{padding:22px;position:relative;overflow:hidden}
    .flow-step::before{counter-increment:s;content:counter(s,decimal-leading-zero);position:absolute;top:18px;right:18px;font-size:34px;font-weight:900;color:rgba(90,103,255,.14)}
    .flow-step h3{margin:0 0 8px}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:820px}
    th,td{padding:15px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f7f9ff;color:#27314a;font-size:14px}
    tr:last-child td{border-bottom:0}
    .rating{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
    .stars{color:#f59e0b;font-size:20px;letter-spacing:2px}
    details{border-top:1px solid var(--line);padding:16px 0}
    details summary{cursor:pointer;list-style:none;font-weight:700}
    details summary::-webkit-details-marker{display:none}
    details p{margin:10px 0 0;color:var(--muted);line-height:1.8}
    .reviews,.articles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review .role{display:inline-block;margin-bottom:12px;font-size:13px;color:#46536f;background:#eef3ff;padding:6px 10px;border-radius:999px}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .timeline .item{padding:18px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .timeline .item b{display:block;margin-bottom:8px}
    .form{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-size:14px;font-weight:700;color:#24304a}
    input,select,textarea{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--text);font:inherit;outline:none;transition:.2s}
    input:focus,select:focus,textarea:focus{border-color:#8aa0ff;box-shadow:0 0 0 4px rgba(90,103,255,.10)}
    textarea{min-height:126px;resize:vertical}
    .footer-top{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:start}
    .foot-links{display:flex;flex-wrap:wrap;gap:10px}
    .foot-links a{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#2a3650}
    .site-footer{margin-top:16px;background:#0f172a;color:#d5ddff}
    .site-footer .container{padding:22px 0}
    .site-footer a{color:#fff}
    .footer-note{color:#94a3c7;font-size:13px;line-height:1.8}
    .floating{position:fixed;right:16px;bottom:16px;z-index:30;display:grid;gap:10px}
    .floating a,.floating button{width:48px;height:48px;border-radius:16px;border:0;display:grid;place-items:center;cursor:pointer;box-shadow:0 12px 28px rgba(15,23,42,.18)}
    .floating .wechat{background:linear-gradient(135deg,#14b8a6,#22c55e);color:#fff}
    .floating .top{background:#fff;color:#0f172a;border:1px solid var(--line)}
    .toast{display:none;position:fixed;left:50%;bottom:24px;transform:translateX(-50%);padding:12px 16px;border-radius:999px;background:#0f172a;color:#fff;z-index:40}
    .reveal{opacity:0;transform:translateY(16px);transition:.55s ease}
    .reveal.in{opacity:1;transform:none}
    .banner-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .banner-row img,.square-row img{width:100%;border-radius:18px;border:1px solid var(--line);box-shadow:var(--shadow);object-fit:cover}
    .square-row{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .limit{max-width:62ch}
    .accordion{background:#fff;border:1px solid var(--line);border-radius:18px;padding:0 18px}
    @media (max-width: 1024px){
      .hero-grid,.grid-4,.grid-3,.reviews,.articles,.timeline,.footer-top,.banner-row,.square-row{grid-template-columns:1fr 1fr}
      .hero-points,.grid-2{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 760px){
      .menu-btn{display:inline-flex}
      .nav-links{display:none;position:absolute;left:16px;right:16px;top:72px;flex-direction:column;gap:10px;padding:16px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
      .nav-links.open{display:flex}
      .nav{position:relative}
      .hero-grid,.grid-4,.grid-3,.grid-2,.reviews,.articles,.timeline,.footer-top,.banner-row,.square-row,.hero-points,.form{grid-template-columns:1fr}
      .hero-copy{padding:24px}
      .hero-side{padding:16px}
      .lead{font-size:15px}
      .site-footer .container,.container{width:min(100% - 24px,var(--container))}
    }