:root{
      --bg:#f7f8fc;
      --bg2:#fffaf3;
      --card:#ffffff;
      --line:#e7e9f2;
      --text:#1f2a37;
      --muted:#5f6b7a;
      --brand:#4f67ff;
      --brand2:#ff7aa2;
      --accent:#ffbf47;
      --good:#18a56b;
      --shadow:0 14px 34px rgba(42,56,123,.10);
      --radius:22px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(255,122,162,.12), transparent 26%),
        radial-gradient(circle at top right, rgba(79,103,255,.10), transparent 24%),
        linear-gradient(180deg, var(--bg2), var(--bg) 24%, #f5f7fb 100%);
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
    }
    .site-header{
      position:sticky;top:0;z-index:40;
      backdrop-filter: blur(14px);
      background:rgba(255,255,255,.84);
      border-bottom:1px solid rgba(231,233,242,.88);
    }
    .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;border:1px solid var(--line);padding:4px}
    .brand strong{display:block;font-size:16px;letter-spacing:.2px}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .nav-links{
      display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:10px 14px;
    }
    .nav-links a{
      font-size:14px;color:#334155;padding:8px 10px;border-radius:999px;
      transition:.22s ease;background:transparent;
    }
    .nav-links a:hover{background:#eef2ff;color:#243b9b}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:11px 16px;border-radius:14px;border:1px solid transparent;
      font-weight:700;font-size:14px;transition:.22s ease;cursor:pointer;
      box-shadow:none;white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#7f56ff);color:#fff;box-shadow:0 10px 24px rgba(79,103,255,.22)}
    .btn-primary:hover{transform:translateY(-1px);box-shadow:0 14px 28px rgba(79,103,255,.28)}
    .btn-ghost{background:#fff;border-color:var(--line);color:#223044}
    .btn-ghost:hover{border-color:#cfd5ea;background:#fafbff}
    .menu-btn{display:none}
    .hero{
      padding:42px 0 18px;
      position:relative;
      overflow:hidden;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch;
    }
    .hero-copy,.hero-panel,.card,.section-box,.form-box,.faq-item,.review-card,.article-card,.step,.compare-box,.price-box{
      background:rgba(255,255,255,.86);
      border:1px solid rgba(231,233,242,.92);
      box-shadow:var(--shadow);
      border-radius:var(--radius);
    }
    .hero-copy{padding:30px;position:relative;overflow:hidden}
    .hero-copy::before{
      content:"";position:absolute;inset:auto -30px -36px auto;width:180px;height:180px;border-radius:50%;
      background:radial-gradient(circle, rgba(255,191,71,.42), transparent 65%);
      pointer-events:none;
    }
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      font-size:13px;font-weight:700;color:#374151;background:#f3f5ff;border:1px solid #dde3ff;
      padding:8px 12px;border-radius:999px;
    }
    h1{font-size:clamp(32px,5vw,52px);line-height:1.08;margin:16px 0 14px;letter-spacing:-.6px}
    .hero-copy p{margin:0 0 18px;color:var(--muted);font-size:16px;line-height:1.8;max-width:60ch}
    .cta-row{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 18px}
    .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
    .hero-badges span,.tag{
      display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border-radius:999px;
      background:#fff7ef;color:#8d4a0d;border:1px solid #ffd9aa;font-size:13px;font-weight:600;
    }
    .hero-panel{padding:22px}
    .panel-top{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:16px}
    .panel-top h2{font-size:18px;margin:0}
    .panel-top p{margin:6px 0 0;color:var(--muted);font-size:13px;line-height:1.7}
    .metric-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .metric{
      padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff,#fbfcff);border:1px solid #edf0f8;
    }
    .metric strong{display:block;font-size:24px;color:#172033}
    .metric span{display:block;margin-top:6px;color:var(--muted);font-size:13px;line-height:1.6}
    section{padding:18px 0}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}
    .section-title h2{margin:0;font-size:24px;letter-spacing:-.2px}
    .section-title p{margin:0;color:var(--muted);font-size:14px;max-width:68ch;line-height:1.7}
    .section-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .card{padding:20px}
    .card h3{margin:0 0 8px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.75}
    .card ul{margin:10px 0 0;padding-left:18px}
    .service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .service-card{padding:18px 18px 16px;border-radius:20px;background:linear-gradient(180deg,#fff,#fbfdff);border:1px solid #edf0f8;box-shadow:var(--shadow);transition:.22s ease}
    .service-card:hover,.card:hover,.review-card:hover,.article-card:hover,.step:hover{transform:translateY(-2px)}
    .service-card h3{font-size:16px;margin:10px 0 8px}
    .service-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
    .icon{
      width:42px;height:42px;border-radius:14px;display:grid;place-items:center;font-weight:800;color:#fff;
      background:linear-gradient(135deg,var(--brand),var(--brand2));
      box-shadow:0 10px 20px rgba(79,103,255,.18);
    }
    .workflow,.timeline,.reviews,.articles,.faq-list,.compare-grid{display:grid;gap:14px}
    .workflow{grid-template-columns:repeat(4,1fr)}
    .step{padding:18px}
    .step .num{font-size:12px;font-weight:800;color:#6b7280;background:#f1f5f9;display:inline-flex;padding:6px 10px;border-radius:999px}
    .step h3{margin:12px 0 8px;font-size:16px}
    table{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
    th,td{padding:14px 14px;text-align:left;border-bottom:1px solid #edf0f6;font-size:14px;vertical-align:top}
    th{background:#f8faff;color:#223044;font-size:13px}
    tr:last-child td{border-bottom:none}
    .badge{display:inline-flex;padding:6px 10px;border-radius:999px;font-size:12px;font-weight:700}
    .badge.good{background:#e8fbf2;color:#17724f}
    .badge.warn{background:#fff5df;color:#926100}
    .badge.info{background:#eef2ff;color:#3147ad}
    .compare-box{padding:20px}
    .score{
      display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:14px
    }
    .score .star{color:#f59e0b;font-size:18px;letter-spacing:2px}
    .score .big{font-size:28px;font-weight:900}
    .grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .price-box{padding:20px}
    .price-list{display:grid;gap:10px}
    .price-item{display:flex;justify-content:space-between;gap:16px;padding:12px 14px;border-radius:14px;background:#f8faff;border:1px solid #e9eef9}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .timeline{grid-template-columns:repeat(4,1fr)}
    .timeline .step{position:relative}
    .review-card,.article-card,.faq-item{padding:18px}
    .review-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
    .avatar{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#ffd56a,#ff8fb0);color:#fff;font-weight:900}
    .stars{color:#f59e0b;letter-spacing:2px}
    .faq-item summary{cursor:pointer;list-style:none;font-weight:700}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item p{margin:10px 0 0;color:var(--muted);line-height:1.78}
    .article-card h3{margin:0 0 8px;font-size:16px}
    .article-card .meta{font-size:12px;color:#667085}
    .form-box{padding:22px}
    form{display:grid;gap:14px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    label{display:grid;gap:7px;font-size:14px;font-weight:700;color:#273244}
    input,select,textarea{
      width:100%;border:1px solid #dfe5f2;background:#fff;border-radius:14px;padding:12px 14px;
      font:inherit;color:var(--text);outline:none;transition:.2s ease;
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#91a3ff;box-shadow:0 0 0 4px rgba(79,103,255,.10)}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
    .note{font-size:13px;color:var(--muted);line-height:1.7}
    .contact-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:16px;align-items:start}
    .contact-card{padding:20px}
    .kefu{
      display:grid;grid-template-columns:110px 1fr;gap:16px;align-items:center
    }
    .kefu img{width:110px;height:110px;object-fit:cover;border-radius:18px;border:1px solid var(--line);background:#fff}
    .float-contact{
      position:fixed;right:16px;bottom:18px;z-index:50;display:grid;gap:10px
    }
    .float-contact a,.to-top{
      width:52px;height:52px;border-radius:16px;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-weight:900;
      box-shadow:0 14px 26px rgba(79,103,255,.24);border:none;cursor:pointer;
    }
    .to-top{opacity:0;pointer-events:none;transition:.2s ease}
    .to-top.show{opacity:1;pointer-events:auto}
    footer{
      margin-top:18px;padding:24px 0 34px;border-top:1px solid rgba(231,233,242,.95);
      background:rgba(255,255,255,.92);color:#233044;
    }
    footer a{color:#334155}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px}
    .footer-grid h3{margin:0 0 10px;font-size:16px}
    .footer-grid p,.footer-grid li{color:#5f6b7a;line-height:1.75;font-size:14px}
    .footer-grid ul{margin:0;padding-left:18px}
    .copyright{margin-top:18px;padding-top:14px;border-top:1px solid #edf0f6;color:#64748b;font-size:13px}
    .mobile-only{display:none}
    .scroll-appear{opacity:0;transform:translateY(16px);transition:opacity .6s ease, transform .6s ease}
    .scroll-appear.in{opacity:1;transform:none}
    @media (max-width: 1080px){
      .hero-grid,.section-grid,.service-grid,.workflow,.timeline,.grid-2,.contact-grid,.footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 760px){
      .nav{flex-wrap:wrap}
      .nav-links{display:none;width:100%;padding-top:8px;justify-content:flex-start}
      .nav-links.open{display:flex}
      .menu-btn{display:inline-flex}
      .hero{padding-top:22px}
      .hero-grid,.section-grid,.service-grid,.workflow,.timeline,.grid-2,.contact-grid,.footer-grid,.form-grid{grid-template-columns:1fr}
      .hero-copy{padding:22px}
      .metric-grid{grid-template-columns:1fr 1fr}
      .section-title{flex-direction:column;align-items:flex-start}
      .mobile-only{display:block}
      .desktop-only{display:none}
      .kefu{grid-template-columns:1fr}
      .kefu img{width:120px;height:120px}
    }