:root{
      --bg:#f7f3ee;
      --panel:#ffffff;
      --panel-2:#fff7f0;
      --text:#172033;
      --muted:#5e687d;
      --brand:#ff4f6d;
      --brand-2:#6c63ff;
      --brand-3:#1ea7ff;
      --line:#eadfd4;
      --shadow:0 18px 40px rgba(30,39,58,.10);
      --shadow-soft:0 10px 24px rgba(30,39,58,.08);
      --radius:22px;
      --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;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(255,79,109,.10), transparent 26%),
        radial-gradient(circle at 80% 10%, rgba(108,99,255,.12), transparent 24%),
        linear-gradient(180deg, #fff 0%, var(--bg) 20%, #f8f5f1 100%);
    }
    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;
      backdrop-filter:blur(14px);
      background:rgba(255,255,255,.84);
      border-bottom:1px solid rgba(234,223,212,.85);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:18px;
      min-height:74px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain}
    .brand h2{margin:0;font-size:18px;letter-spacing:.3px}
    .brand p{margin:2px 0 0;color:var(--muted);font-size:12px}
    .nav-links{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px 14px;align-items:center}
    .nav-links a{font-size:14px;color:#2f3a4f;padding:8px 10px;border-radius:999px;transition:.2s}
    .nav-links a:hover,.nav-links a.active{background:#fff;color:var(--brand);box-shadow:0 6px 16px rgba(255,79,109,.12)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:1px solid transparent;border-radius:999px;padding:12px 18px;
      font-weight:700;transition:.2s ease;cursor:pointer;white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#ff7a59);color:#fff;box-shadow:0 12px 30px rgba(255,79,109,.22)}
    .btn-primary:hover{transform:translateY(-1px);box-shadow:0 16px 36px rgba(255,79,109,.28)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:#d4c3b2;transform:translateY(-1px)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;color:var(--text)}
    main{overflow:hidden}
    .section{padding:72px 0}
    .section.tight{padding:54px 0}
    .section-header{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:24px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-weight:800;font-size:13px;letter-spacing:.2px}
    .eyebrow::before{content:"";width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 0 0 6px rgba(255,79,109,.10)}
    h1,h2,h3{line-height:1.15}
    h1{margin:14px 0 16px;font-size:clamp(36px,6vw,62px);letter-spacing:-.8px}
    h2{margin:0;font-size:clamp(26px,3.3vw,40px)}
    h3{margin:0 0 10px;font-size:20px}
    .sub{color:var(--muted);line-height:1.8}
    .hero{
      padding:34px 0 20px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:stretch;
    }
    .hero-card{
      background:linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.82));
      border:1px solid rgba(234,223,212,.8);
      box-shadow:var(--shadow);
      border-radius:30px;
      padding:30px;
      position:relative;overflow:hidden;
    }
    .hero-card::after{
      content:"";position:absolute;inset:auto -10% -40% auto;width:240px;height:240px;border-radius:50%;
      background:radial-gradient(circle, rgba(255,79,109,.14), transparent 65%);
      pointer-events:none;
    }
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
    .mini{
      background:linear-gradient(180deg, rgba(255,255,255,.96), rgba(255,247,240,.92));
      border:1px solid var(--line);border-radius:18px;padding:16px 14px;box-shadow:var(--shadow-soft)
    }
    .mini strong{display:block;font-size:20px}
    .mini span{color:var(--muted);font-size:13px}
    .hero-side{
      display:grid;gap:14px;
      grid-template-rows:auto auto 1fr;
    }
    .side-card{
      background:linear-gradient(180deg,#171c2b,#24294a);
      color:#fff;border-radius:28px;padding:24px;border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow);
    }
    .side-card p,.side-card li{color:rgba(255,255,255,.84)}
    .side-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .side-chip{
      background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.10);
      padding:14px;border-radius:16px;font-size:13px
    }
    .metric-grid,.service-grid,.case-grid,.review-grid,.info-grid,.step-grid,.faq-grid,.price-grid,.network-grid,.articles-grid,.compare-grid{
      display:grid;gap:16px
    }
    .metric-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
    .card{
      background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
      box-shadow:var(--shadow-soft);padding:22px;transition:.2s ease;overflow:hidden
    }
    .card:hover{transform:translateY(-4px);box-shadow:0 18px 34px rgba(30,39,58,.12)}
    .metric strong{display:block;font-size:28px;margin-bottom:6px}
    .metric span{color:var(--muted);font-size:14px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#394357;font-size:13px}
    .service-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
    .service-card{background:linear-gradient(180deg,#fff, #fffaf6)}
    .service-card ul{margin:12px 0 0;padding:0 0 0 18px;color:var(--muted);line-height:1.8}
    .steps{counter-reset:step}
    .step-card::before{
      counter-increment:step;content:"0" counter(step);
      display:inline-flex;align-items:center;justify-content:center;
      width:42px;height:42px;border-radius:14px;
      background:linear-gradient(135deg,rgba(255,79,109,.14),rgba(108,99,255,.14));
      color:var(--brand);font-weight:900;margin-bottom:14px
    }
    .step-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
    .compare-wrap{background:linear-gradient(180deg,#fff, #fff7f0);border:1px solid var(--line);border-radius:28px;padding:22px;box-shadow:var(--shadow-soft)}
    table{width:100%;border-collapse:collapse}
    th,td{padding:14px 12px;border-bottom:1px solid #efe3d7;text-align:left;vertical-align:top}
    th{color:#263042;background:#fff7f0;font-size:14px}
    td{color:#384357;font-size:14px}
    .rating{display:inline-flex;gap:4px;color:#ffb400;font-size:18px}
    .split{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
    .list-check{margin:0;padding:0;list-style:none;display:grid;gap:10px}
    .list-check li{position:relative;padding-left:28px;color:#394357;line-height:1.7}
    .list-check li::before{content:"✓";position:absolute;left:0;top:0;color:#1b9a59;font-weight:900}
    .price-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
    .price-card{background:linear-gradient(180deg,#fff,#fff8f2)}
    .price-card .num{font-size:28px;font-weight:900;color:var(--brand)}
    .network-grid{grid-template-columns:repeat(5,minmax(0,1fr))}
    .faq-item{border:1px solid var(--line);border-radius:18px;background:#fff;overflow:hidden}
    .faq-q{
      width:100%;padding:18px 18px;background:transparent;border:0;text-align:left;font-size:16px;font-weight:800;color:var(--text);
      display:flex;justify-content:space-between;gap:12px;align-items:center;cursor:pointer
    }
    .faq-a{display:none;padding:0 18px 18px;color:var(--muted);line-height:1.8}
    .faq-item.open .faq-a{display:block}
    .faq-item.open .faq-q .arrow{transform:rotate(180deg)}
    .arrow{transition:.2s}
    .review-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
    .review .meta{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:14px}
    .stars{color:#ffb400;font-size:18px}
    .articles-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
    .article-link{display:block;padding:14px 0;border-top:1px solid var(--line);color:#263042}
    .article-link:hover{color:var(--brand)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    label{font-size:14px;font-weight:700;color:#2c3648}
    input,select,textarea{
      width:100%;border:1px solid #d9cfc2;border-radius:14px;padding:14px 14px;font:inherit;background:#fff;color:var(--text);
      outline:none;transition:.2s
    }
    textarea{min-height:118px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#ff7a8e;box-shadow:0 0 0 4px rgba(255,79,109,.10)}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:4px}
    .footer{
      background:#111827;color:#ecf1ff;border-top:1px solid rgba(255,255,255,.08);
      padding:34px 0 22px;margin-top:34px
    }
    .footer a{color:#fff}
    .footer .sub{color:rgba(236,241,255,.78)}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px}
    .float-box{
      position:fixed;right:18px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:10px
    }
    .float-btn{
      background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-soft);border-radius:999px;padding:12px 16px;
      display:inline-flex;align-items:center;gap:8px;font-weight:800;color:var(--text)
    }
    .float-btn.primary{background:linear-gradient(135deg,var(--brand),#ff7a59);color:#fff;border-color:transparent}
    .kefu-panel{
      position:fixed;left:18px;bottom:18px;z-index:60;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);
      border-radius:22px;padding:14px;width:180px
    }
    .kefu-panel img{border-radius:14px;margin-top:10px}
    .fade-in{opacity:0;transform:translateY(12px);transition:.7s ease}
    .fade-in.show{opacity:1;transform:translateY(0)}
    .mobile-only{display:none}
    .table-scroll{overflow:auto}
    @media (max-width: 1024px){
      .hero-grid,.split,.footer-grid,.service-grid,.review-grid,.articles-grid,.network-grid,.metric-grid,.step-grid,.price-grid{grid-template-columns:1fr 1fr}
      .hero-side{grid-template-rows:auto}
      .side-list{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 768px){
      .menu-toggle{display:inline-flex}
      .nav-links{display:none;position:absolute;left:16px;right:16px;top:74px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:14px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start}
      .nav-links.open{display:flex}
      .nav{position:relative}
      .nav-actions .btn-ghost{display:none}
      .hero-grid,.split,.footer-grid,.service-grid,.review-grid,.articles-grid,.network-grid,.metric-grid,.step-grid,.price-grid,.form-grid{grid-template-columns:1fr}
      .section{padding:58px 0}
      .hero{padding-top:18px}
      .hero-card,.side-card{padding:22px;border-radius:24px}
      .hero-points{grid-template-columns:1fr}
      .side-list{grid-template-columns:1fr}
      .section-header{flex-direction:column;align-items:flex-start}
      .kefu-panel{display:none}
      .mobile-only{display:block}
    }