:root{
      --bg:#f5f7ff;
      --surface:#ffffff;
      --surface-2:#f8fbff;
      --line:#dbe4f3;
      --text:#1f2a44;
      --muted:#5f6b86;
      --brand:#4968ff;
      --brand2:#15b8a6;
      --brand3:#ff8a4c;
      --shadow:0 18px 50px rgba(52,72,140,.10);
      --shadow2:0 10px 28px rgba(54,72,120,.12);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:Inter,system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;background:
      radial-gradient(circle at top left, rgba(73,104,255,.12), transparent 28%),
      radial-gradient(circle at right 14%, rgba(21,184,166,.10), transparent 24%),
      linear-gradient(180deg, #f8fbff 0%, #f5f7ff 45%, #f7fafc 100%);
      color:var(--text);}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .topbar{position:sticky;top:0;z-index:50;background:rgba(245,247,255,.82);backdrop-filter:blur(18px);border-bottom:1px solid rgba(219,228,243,.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:0 8px 20px rgba(73,104,255,.12)}
    .brand strong{display:block;font-size:16px;line-height:1.2}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .nav-links{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:var(--muted);padding:8px 10px;border-radius:999px}
    .nav-links a:hover,.nav-links a.active{color:var(--text);background:rgba(73,104,255,.08)}
    .nav-toggle{display:none;border:1px solid var(--line);background:var(--surface);border-radius:12px;padding:10px 12px;color:var(--text)}
    .hero{padding:34px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:22px;align-items:stretch}
    .hero-main{background:linear-gradient(135deg, rgba(73,104,255,.12), rgba(21,184,166,.10) 56%, rgba(255,138,76,.08));border:1px solid rgba(73,104,255,.14);border-radius:30px;padding:34px;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .hero-main:before,.hero-main:after{content:"";position:absolute;border-radius:50%;filter:blur(2px);pointer-events:none}
    .hero-main:before{width:220px;height:220px;background:rgba(73,104,255,.16);right:-70px;top:-60px}
    .hero-main:after{width:180px;height:180px;background:rgba(21,184,166,.14);right:70px;bottom:-80px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:#3551d8;background:rgba(255,255,255,.72);border:1px solid rgba(73,104,255,.14);padding:8px 12px;border-radius:999px}
    h1{margin:18px 0 12px;font-size:clamp(30px,4vw,52px);line-height:1.08;letter-spacing:-.03em}
    .lead{font-size:16px;line-height:1.8;color:var(--muted);max-width:62ch}
    .cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 18px;border-radius:14px;border:1px solid transparent;font-weight:700;transition:.22s ease;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--brand),#6d8bff);color:#fff;box-shadow:0 14px 28px rgba(73,104,255,.24)}
    .btn-primary:hover{transform:translateY(-2px)}
    .btn-secondary{background:rgba(255,255,255,.76);border-color:var(--line);color:var(--text)}
    .btn-secondary:hover{transform:translateY(-2px);box-shadow:var(--shadow2)}
    .hero-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .stat-card,.side-card,.panel,.faq-item,.review-card,.article-card,.service-card,.step,.compare-card,.form-card,.info-card{background:rgba(255,255,255,.8);border:1px solid rgba(219,228,243,.9);border-radius:var(--radius);box-shadow:0 10px 24px rgba(53,72,120,.06)}
    .stat-card{padding:18px}
    .stat-card strong{display:block;font-size:28px;margin-bottom:6px}
    .stat-card span{color:var(--muted);font-size:13px;line-height:1.5}
    .section{padding:18px 0}
    .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:28px;line-height:1.2}
    .section-head p{margin:0;color:var(--muted);max-width:60ch;line-height:1.7}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .service-card,.step,.review-card,.article-card,.compare-card,.form-card,.info-card,.side-card{padding:20px}
    .service-card h3,.step h3,.review-card h3,.article-card h3,.compare-card h3,.form-card h3,.info-card h3{margin:0 0 8px;font-size:18px}
    .muted{color:var(--muted);line-height:1.75}
    .pill-row,.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .pill{padding:8px 12px;border-radius:999px;background:#eef3ff;border:1px solid #d8e2ff;color:#3650d3;font-size:13px}
    .tag{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--text)}
    .timeline{display:grid;gap:14px}
    .timeline-item{display:grid;grid-template-columns:84px 1fr;gap:14px;align-items:start;padding:14px 0;border-top:1px dashed #d7deeb}
    .timeline-item:first-child{border-top:0;padding-top:0}
    .timeline-item .time{font-weight:800;color:#3151d5}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:var(--surface)}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;border-bottom:1px solid #edf1f7;text-align:left;vertical-align:top;font-size:14px;line-height:1.7}
    th{background:#f7f9ff;color:#243252}
    .rating{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:10px 0 14px}
    .stars{color:#ffb021;font-size:18px;letter-spacing:2px}
    .badge{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:rgba(21,184,166,.10);color:#0e7e72;font-size:12px;font-weight:700}
    .accordion{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{width:100%;background:none;border:0;padding:18px 18px;display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:15px;font-weight:700;color:var(--text);cursor:pointer;text-align:left}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 18px}
    .faq-item.open .faq-a{max-height:180px;padding-bottom:18px}
    .faq-icon{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:#eef3ff;color:#3551d8;flex:0 0 auto}
    .review-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
    .review-role{font-size:13px;color:#3551d8;font-weight:700}
    .article-card .meta{font-size:12px;color:var(--muted);margin-bottom:10px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    label{display:block;font-size:13px;font-weight:700;margin-bottom:8px;color:#2a3550}
    input,select,textarea{width:100%;padding:13px 14px;border:1px solid #d7e0ef;border-radius:14px;background:#fff;color:var(--text);outline:none;font:inherit}
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#7c93ff;box-shadow:0 0 0 4px rgba(73,104,255,.08)}
    .span-2{grid-column:span 2}
    .footer{margin-top:18px;padding:26px 0 30px;border-top:1px solid rgba(219,228,243,.9);background:rgba(247,249,255,.8);color:var(--text)}
    .footer a{color:#3551d8}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .footer-note{margin-top:14px;color:var(--muted);font-size:13px;line-height:1.7}
    .float-tools{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .float-btn{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),#6d8bff);color:#fff;box-shadow:0 14px 30px rgba(73,104,255,.28);border:0;cursor:pointer}
    .panel{padding:18px}
    .hero-side{display:grid;gap:16px}
    .side-card h3{margin:0 0 8px}
    .sticky-kefu{display:grid;gap:12px}
    .kefu-img{border-radius:18px;border:1px solid var(--line);overflow:hidden;background:#fff;padding:10px}
    .hidden-mobile{display:block}
    .mini-links{display:flex;flex-wrap:wrap;gap:10px}
    .mini-links a{font-size:13px;color:#3551d8;background:#edf3ff;padding:8px 10px;border-radius:10px}
    .scroll-anim{animation:floatUp .55s ease both}
    @keyframes floatUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.footer-grid{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
      .form-grid{grid-template-columns:1fr}
      .span-2{grid-column:span 1}
      .nav-links{display:none;position:absolute;left:16px;right:16px;top:68px;background:rgba(255,255,255,.98);border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:var(--shadow);max-height:70vh;overflow:auto}
      .nav-links.open{display:flex;flex-direction:column;align-items:flex-start}
      .nav-toggle{display:inline-flex}
      .nav{position:relative}
    }