:root{
      --bg:#f7f5ef;
      --panel:#ffffff;
      --panel-2:#fff9f0;
      --text:#1f2937;
      --muted:#5b6472;
      --line:#e7dfd2;
      --brand:#1f6feb;
      --brand-2:#ff8f4d;
      --accent:#8b5cf6;
      --good:#159570;
      --shadow:0 18px 40px rgba(31,41,55,.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,"PingFang SC","Microsoft YaHei",sans-serif;background:
      radial-gradient(circle at top left, rgba(31,111,235,.08), transparent 28%),
      radial-gradient(circle at 90% 10%, rgba(255,143,77,.10), transparent 24%),
      linear-gradient(180deg, #fffdf8 0%, var(--bg) 36%, #f8fafc 100%);
      color:var(--text);line-height:1.65}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(100% - 32px, var(--container));margin:0 auto}
    header{position:sticky;top:0;z-index:50;background:rgba(247,245,239,.86);backdrop-filter:blur(12px);border-bottom:1px solid rgba(231,223,210,.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}
    .brand h1{font-size:16px;line-height:1.2;margin:0;color:#122033}
    .brand p{margin:2px 0 0;color:var(--muted);font-size:12px}
    .nav-links{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#334155;padding:8px 10px;border-radius:999px;transition:.2s}
    .nav-links a:hover,.nav-links a:focus{background:#fff;color:#0f172a;box-shadow:0 8px 18px rgba(31,41,55,.08)}
    .nav-cta{display:flex;gap:10px;align-items:center}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:999px;padding:12px 16px;font-weight:700;cursor:pointer;transition:.22s;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),#4f8ff7);color:#fff;box-shadow:0 12px 24px rgba(31,111,235,.22)}
    .btn-primary:hover{transform:translateY(-1px)}
    .btn-secondary{background:#fff;color:#1f2937;border-color:var(--line)}
    .btn-secondary:hover{border-color:#c8d0dc;transform:translateY(-1px)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;color:#243244}
    .hero{padding:34px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch}
    .hero-main{position:relative;overflow:hidden;background:linear-gradient(135deg,#ffffff 0%,#fff8ef 55%,#eef5ff 100%);border:1px solid rgba(231,223,210,.85);border-radius:28px;padding:34px;box-shadow:var(--shadow)}
    .hero-main:before,.hero-main:after{content:"";position:absolute;border-radius:50%;pointer-events:none}
    .hero-main:before{width:200px;height:200px;right:-56px;top:-66px;background:radial-gradient(circle, rgba(79,143,247,.18), transparent 68%)}
    .hero-main:after{width:240px;height:240px;left:-90px;bottom:-120px;background:radial-gradient(circle, rgba(255,143,77,.16), transparent 68%)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:#eef5ff;color:#1d4ed8;font-weight:700;font-size:13px}
    .hero h2{font-size:clamp(30px,5vw,54px);line-height:1.08;margin:16px 0 14px;color:#0f172a;letter-spacing:-.02em}
    .hero p{margin:0;color:#465064;font-size:16px;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:18px}
    .point{background:rgba(255,255,255,.82);border:1px solid rgba(231,223,210,.85);border-radius:18px;padding:14px}
    .point strong{display:block;font-size:18px;color:#0f172a}
    .point span{font-size:13px;color:var(--muted)}
    .hero-side{display:grid;gap:14px}
    .side-card{background:linear-gradient(180deg,#fff 0%,#fffaf3 100%);border:1px solid rgba(231,223,210,.85);border-radius:24px;padding:22px;box-shadow:var(--shadow)}
    .side-card h3{margin:0 0 10px;font-size:18px;color:#0f172a}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:#f4f7fb;border:1px solid #e3e8f0;color:#334155;font-size:13px}
    .metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;padding:18px 0 8px}
    .metric{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:18px;box-shadow:0 10px 25px rgba(31,41,55,.05)}
    .metric strong{display:block;font-size:26px;color:#0f172a}
    .metric span{color:var(--muted);font-size:13px}
    section{padding:24px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:18px}
    .section-head h2{margin:0;font-size:28px;color:#0f172a}
    .section-head p{margin:0;color:var(--muted);max-width:62ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .card{background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 14px 30px rgba(31,41,55,.06);transition:.22s}
    .card:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(31,41,55,.1)}
    .card h3{margin:0 0 8px;font-size:18px;color:#0f172a}
    .card p,.card li{color:#4b5563}
    .feature-list{display:grid;gap:12px}
    .feature{display:flex;gap:12px;align-items:flex-start}
    .icon{width:34px;height:34px;border-radius:12px;background:linear-gradient(135deg,rgba(31,111,235,.12),rgba(255,143,77,.14));display:grid;place-items:center;color:#1f6feb;flex:none}
    .steps{counter-reset:step;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{position:relative}
    .step:before{counter-increment:step;content:counter(step,decimal-leading-zero);position:absolute;top:18px;right:18px;color:#cbd5e1;font-weight:800;font-size:22px}
    .step h3{margin-top:10px}
    .table-wrap{overflow-x:auto;background:var(--panel);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:820px}
    th,td{padding:14px 16px;border-bottom:1px solid #edf1f5;text-align:left;vertical-align:top}
    th{background:#f8fbff;color:#0f172a;font-size:14px}
    td{color:#334155;font-size:14px}
    .badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:700}
    .badge.good{background:#e8f8f2;color:#0f766e}
    .badge.info{background:#eaf2ff;color:#1d4ed8}
    .timeline{display:grid;gap:12px}
    .timeline-item{display:grid;grid-template-columns:92px 1fr;gap:12px;align-items:start;padding:16px;border:1px solid var(--line);border-radius:18px;background:#fff}
    .timeline-item strong{color:#0f172a}
    .case-grid,.review-grid,.article-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .case-card{overflow:hidden}
    .case-card .meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
    .quote{font-size:15px;color:#334155;margin:0}
    .rating{color:#f59e0b;font-size:18px;letter-spacing:2px}
    .faq{display:grid;gap:12px}
    details{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:16px 18px;box-shadow:0 10px 22px rgba(31,41,55,.05)}
    summary{cursor:pointer;font-weight:700;color:#0f172a}
    details p{margin:12px 0 0;color:#4b5563}
    .form-wrap{display:grid;grid-template-columns:1fr .82fr;gap:16px}
    form{display:grid;gap:12px}
    .field{display:grid;gap:8px}
    .field label{font-weight:700;color:#243244;font-size:14px}
    .field input,.field select,.field textarea{width:100%;border:1px solid #d8e0ea;border-radius:14px;padding:12px 14px;font:inherit;background:#fff;color:#111827}
    .field textarea{min-height:120px;resize:vertical}
    .help-box{background:linear-gradient(180deg,#fff 0%,#f8fbff 100%);border:1px solid var(--line);border-radius:22px;padding:22px}
    footer{margin-top:8px;background:#0f172a;color:#dbe4f0;padding:24px 0 28px}
    footer a{color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px;align-items:start}
    .footer-grid p,.footer-grid li{color:#c7d2e2}
    .footer-grid ul{padding:0;margin:0;list-style:none;display:grid;gap:8px}
    .footer-bottom{margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:#bac6d6;font-size:13px}
    .float-box{position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px}
    .float-btn{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:999px;padding:12px 14px;color:#243244;font-weight:700}
    .back-top{display:none}
    .kefu-panel{position:fixed;left:18px;bottom:18px;z-index:60;max-width:220px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:14px;box-shadow:var(--shadow)}
    .kefu-panel h4{margin:0 0 8px;color:#0f172a}
    .kefu-panel p{margin:8px 0 0;font-size:13px;color:#4b5563}
    .ai-page-image,.ai-page-logo{border-radius:14px}
    .mini-note{color:var(--muted);font-size:13px}
    .anchor-space{scroll-margin-top:92px}
    @media (max-width: 980px){
      .hero-grid,.form-wrap,.footer-grid,.grid-3,.grid-2,.case-grid,.review-grid,.article-grid,.steps,.metric-grid{grid-template-columns:1fr 1fr}
      .hero-points{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
    }
    @media (max-width: 720px){
      .nav-links,.nav-cta{display:none}
      .menu-toggle{display:inline-flex}
      .hero-grid,.form-wrap,.footer-grid,.grid-3,.grid-2,.case-grid,.review-grid,.article-grid,.steps,.metric-grid{grid-template-columns:1fr}
      .hero-main{padding:24px}
      .hero h2{font-size:32px}
      .timeline-item{grid-template-columns:1fr}
      .kefu-panel{display:none}
      .float-box{right:12px;bottom:12px}
    }
    .mobile-menu{display:none;padding:0 0 14px}
    .mobile-menu.open{display:block}
    .mobile-menu a{display:block;padding:10px 0;color:#243244;border-top:1px solid #e8edf3}
    .scroll-in{opacity:0;transform:translateY(10px);transition:.5s ease}
    .scroll-in.show{opacity:1;transform:none}