:root{
      --bg:#f7f4fb;
      --bg2:#fff8fd;
      --card:#ffffff;
      --ink:#1f2230;
      --muted:#5b5f73;
      --line:#eadff4;
      --accent:#d946ef;
      --accent2:#8b5cf6;
      --accent3:#ff4fd8;
      --shadow:0 18px 50px rgba(70,18,96,.12);
      --shadow2:0 10px 24px rgba(86,34,124,.14);
      --radius:22px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Arial,Helvetica,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--ink);
      background:
        radial-gradient(circle at 20% 0%, rgba(217,70,239,.10), transparent 28%),
        radial-gradient(circle at 90% 10%, rgba(139,92,246,.12), transparent 24%),
        linear-gradient(180deg, #fff 0%, var(--bg) 100%);
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:30;
      backdrop-filter:blur(14px);
      background:rgba(255,255,255,.76);
      border-bottom:1px solid rgba(234,223,244,.75);
    }
    .header-inner,.footer-inner,.topbar,.hero-inner,.grid,.split,.cards,.steps,.reviews,.faq-grid,.article-grid,.stats,.service-grid,.compare-grid,.contact-grid,.network-grid,.tag-cloud,.price-grid,.timeline{
      display:grid;gap:18px
    }
    .header-inner{
      grid-template-columns:auto 1fr auto;
      align-items:center;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;padding:4px;border:1px solid var(--line)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:3px}
    .nav{display:flex;align-items:center;justify-content:flex-end;gap:14px;flex-wrap:wrap}
    .nav a{font-size:14px;color:#2b2f40;padding:8px 10px;border-radius:999px;transition:.22s ease}
    .nav a:hover,.nav a:focus{background:#f4eaff;color:#111;transform:translateY(-1px)}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;color:var(--ink)}
    .hero{
      position:relative;overflow:hidden;
      padding:44px 0 18px;
    }
    .hero::before,.hero::after{
      content:"";position:absolute;border-radius:999px;filter:blur(4px);pointer-events:none
    }
    .hero::before{width:280px;height:280px;background:radial-gradient(circle, rgba(255,79,216,.22), transparent 68%);right:-80px;top:-60px}
    .hero::after{width:220px;height:220px;background:radial-gradient(circle, rgba(139,92,246,.18), transparent 68%);left:-70px;bottom:10px}
    .hero-inner{grid-template-columns:1.22fr .78fr;align-items:stretch}
    .hero-copy{
      padding:28px;border:1px solid rgba(234,223,244,.85);
      background:linear-gradient(135deg, rgba(255,255,255,.96), rgba(255,245,252,.88));
      border-radius:28px;box-shadow:var(--shadow);
    }
    .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#8620a0;background:#f8ecff;border:1px solid #edd4fb;padding:8px 12px;border-radius:999px}
    h1{margin:16px 0 12px;font-size:clamp(32px,5vw,54px);line-height:1.05;letter-spacing:-.03em}
    .lead{margin:0;color:var(--muted);font-size:16px;line-height:1.85;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:13px 18px;border-radius:14px;font-weight:700;border:1px solid transparent;
      transition:.22s ease;cursor:pointer
    }
    .btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;box-shadow:0 14px 28px rgba(139,92,246,.22)}
    .btn-secondary{background:#fff;color:#28293b;border-color:var(--line)}
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow2)}
    .hero-meta{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:22px}
    .mini{
      background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;box-shadow:0 8px 22px rgba(92,39,125,.07)
    }
    .mini b{display:block;font-size:18px;margin-bottom:6px}
    .mini span{font-size:13px;color:var(--muted);line-height:1.6}
    .hero-panel{
      padding:22px;border-radius:28px;border:1px solid rgba(234,223,244,.85);
      background:linear-gradient(180deg, rgba(17,12,31,.96), rgba(57,15,77,.96));
      color:#fff;box-shadow:var(--shadow)
    }
    .hero-panel h2,.hero-panel p,.hero-panel li{color:#fff}
    .hero-panel h2{margin:0 0 12px;font-size:24px}
    .hero-panel p{margin:0 0 16px;color:rgba(255,255,255,.82);line-height:1.8}
    .chip-row{display:flex;flex-wrap:wrap;gap:10px}
    .chip{
      padding:8px 11px;border-radius:999px;background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.12);font-size:13px
    }
    main{padding:10px 0 24px}
    section{padding:18px 0}
    .section-head{margin-bottom:16px}
    .section-head h2{margin:0 0 8px;font-size:28px;line-height:1.15}
    .section-head p{margin:0;color:var(--muted);line-height:1.8}
    .stats{grid-template-columns:repeat(4,minmax(0,1fr))}
    .card,.panel,.review,.faq-item,.article,.form-box,.compare-table,.timeline-item,.service-box,.price-box,.network-box,.help-box{
      background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 10px 24px rgba(63,24,90,.06)
    }
    .card,.panel,.service-box,.price-box,.network-box,.help-box{padding:18px}
    .card h3,.service-box h3,.help-box h3,.price-box h3,.network-box h3{margin:0 0 8px;font-size:18px}
    .card p,.service-box p,.help-box p,.price-box p,.network-box p{margin:0;color:var(--muted);line-height:1.75}
    .kpi{font-size:30px;font-weight:800;color:#111827;margin-bottom:8px}
    .split{grid-template-columns:1.02fr .98fr;align-items:start}
    .list{
      display:grid;gap:12px;margin:0;padding:0;list-style:none
    }
    .list li{
      padding:12px 14px;border-radius:14px;background:#fbf7ff;border:1px solid #f0e4fb;color:#303346;line-height:1.7
    }
    .service-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
    .service-box{position:relative;overflow:hidden}
    .service-box::after{content:"";position:absolute;inset:auto -28px -28px auto;width:92px;height:92px;border-radius:50%;background:radial-gradient(circle, rgba(217,70,239,.12), transparent 70%)}
    .service-box ul{margin:12px 0 0;padding-left:18px;color:var(--muted);line-height:1.8}
    .steps{grid-template-columns:repeat(4,minmax(0,1fr))}
    .step{padding:18px;border-radius:22px;background:linear-gradient(180deg,#fff,#fbf6ff);border:1px solid var(--line)}
    .step b{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;border-radius:12px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;margin-bottom:12px}
    .step h3{margin:0 0 8px}
    .compare-table{overflow-x:auto}
    table{width:100%;border-collapse:collapse;min-width:720px}
    th,td{padding:14px 12px;border-bottom:1px solid #f0e6fb;text-align:left;vertical-align:top}
    th{background:#fbf7ff;color:#27283a;font-size:14px}
    td{color:#3d4154;line-height:1.7}
    .rating{font-weight:800;color:#8b1aa6}
    .grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
    .tag-cloud,.price-grid,.network-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
    .tag-cloud a,.price-pill{
      display:inline-flex;align-items:center;justify-content:center;padding:10px 12px;border-radius:999px;
      background:linear-gradient(180deg,#fff,#fbf6ff);border:1px solid var(--line);color:#2f3145;font-size:14px
    }
    .review{padding:18px}
    .review .role{color:#8a2aa5;font-weight:700;font-size:13px;margin-bottom:8px}
    .review p{margin:0;color:var(--muted);line-height:1.85}
    .review .name{margin-top:12px;font-weight:700}
    .article{padding:16px}
    .article time{font-size:12px;color:#8a90a3}
    .article h3{margin:8px 0 8px;font-size:17px}
    .article p{margin:0;color:var(--muted);line-height:1.75}
    .faq-grid{grid-template-columns:1fr}
    .faq-item summary{
      list-style:none;cursor:pointer;padding:16px 18px;font-weight:700;display:flex;justify-content:space-between;align-items:center;gap:12px
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{content:"+";font-size:20px;color:#a03ab0}
    .faq-item[open] summary::after{content:"−"}
    .faq-item .answer{padding:0 18px 16px;color:var(--muted);line-height:1.85}
    .form-box form{display:grid;gap:14px}
    .field{display:grid;gap:8px}
    label{font-size:14px;font-weight:700}
    input,select,textarea{
      width:100%;border:1px solid #dfd2ec;border-radius:14px;background:#fff;padding:13px 14px;
      font:inherit;color:var(--ink);outline:none;transition:.2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:#bf56e8;box-shadow:0 0 0 4px rgba(191,86,232,.12)}
    textarea{min-height:120px;resize:vertical}
    .footer{
      padding:22px 0 26px;border-top:1px solid rgba(234,223,244,.85);
      background:linear-gradient(180deg, rgba(255,255,255,.88), rgba(248,243,252,.98));
      color:var(--ink)
    }
    .footer-inner{grid-template-columns:1.2fr .8fr .9fr;align-items:start}
    .footer a{color:#3a2d78}
    .footer small,.footer p{color:var(--muted);line-height:1.8}
    .footer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
    .footer-links a{padding:8px 0}
    .float-tools{
      position:fixed;right:16px;bottom:16px;z-index:40;display:grid;gap:10px
    }
    .float-tools a,.float-tools button{
      border:none;cursor:pointer;text-align:center;
      width:52px;height:52px;border-radius:18px;background:linear-gradient(135deg,var(--accent2),var(--accent));
      color:#fff;box-shadow:0 12px 24px rgba(139,92,246,.24);display:flex;align-items:center;justify-content:center;font-weight:700
    }
    .fade-up{opacity:0;transform:translateY(16px);transition:.7s ease}
    .fade-up.in{opacity:1;transform:none}
    .muted{color:var(--muted)}
    .badge{display:inline-flex;padding:6px 10px;border-radius:999px;background:#f6ecff;color:#7d1ca1;font-size:12px;font-weight:700}
    .article-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
    .help-box ul,.network-box ul{margin:12px 0 0;padding-left:18px;color:var(--muted);line-height:1.8}
    .two-col{grid-template-columns:1fr 1fr}
    .image-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .image-row img{border-radius:18px;border:1px solid var(--line);box-shadow:0 12px 26px rgba(74,28,104,.1)}
    .case-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .case{
      padding:18px;border-radius:22px;background:linear-gradient(180deg,#fff,#fcf8ff);border:1px solid var(--line)
    }
    .case h3{margin:0 0 8px}
    .case p{margin:0;color:var(--muted);line-height:1.8}
    @media (max-width: 980px){
      .hero-inner,.split,.footer-inner,.two-col,.grid-2,.case-list{grid-template-columns:1fr}
      .stats,.service-grid,.steps,.tag-cloud,.price-grid,.network-grid,.article-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .hero-meta{grid-template-columns:1fr}
      .header-inner{grid-template-columns:auto auto;justify-content:space-between}
      .nav-toggle{display:inline-flex}
      .nav{display:none;grid-column:1/-1;justify-content:flex-start;padding-top:8px}
      .nav.open{display:flex}
    }
    @media (max-width: 640px){
      .container{width:min(var(--container), calc(100% - 24px))}
      .stats,.service-grid,.steps,.tag-cloud,.price-grid,.network-grid,.article-grid,.image-row{grid-template-columns:1fr}
      .hero-copy,.hero-panel{padding:20px}
      .section-head h2{font-size:24px}
      .footer-links{grid-template-columns:1fr}
      .nav{gap:8px}
      .nav a{padding:7px 9px}
    }