:root{
      --bg:#0c0d1a;
      --bg2:#12162a;
      --panel:rgba(18,22,42,.76);
      --card:rgba(255,255,255,.06);
      --card2:#171b33;
      --line:rgba(255,255,255,.12);
      --text:#edf0ff;
      --muted:#a7b0da;
      --brand:#ff4fd8;
      --brand2:#8b5cf6;
      --accent:#39d0ff;
      --good:#4ce1a7;
      --warn:#ffd166;
      --shadow:0 18px 50px rgba(0,0,0,.35);
      --radius:20px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;background:
      radial-gradient(circle at 20% 10%, rgba(255,79,216,.16), transparent 25%),
      radial-gradient(circle at 80% 20%, rgba(57,208,255,.12), transparent 22%),
      linear-gradient(180deg,#090a14 0%, #0c0d1a 48%, #10142a 100%);
      color:var(--text);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}
    .topbar{position:sticky;top:0;z-index:50;background:rgba(10,12,24,.72);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
    .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 .mark{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,var(--brand),var(--brand2));box-shadow:0 10px 30px rgba(255,79,216,.25);display:grid;place-items:center;overflow:hidden}
    .brand .text{min-width:0}
    .brand h1{margin:0;font-size:18px;line-height:1.2}
    .brand p{margin:3px 0 0;color:var(--muted);font-size:12px}
    .navlinks{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .navlinks a{color:var(--muted);font-size:14px}
    .navlinks a:hover{color:#fff}
    .navcta{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 16px;font-weight:700;transition:.25s ease;cursor:pointer;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 12px 30px rgba(139,92,246,.28)}
    .btn-ghost{background:rgba(255,255,255,.06);border-color:var(--line);color:#fff}
    .btn:hover{transform:translateY(-2px)}
    .menu-btn{display:none;background:rgba(255,255,255,.06);border:1px solid var(--line);color:#fff;border-radius:14px;padding:10px 12px}
    .hero{padding:56px 0 28px;position:relative}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.section-card,.feature,.review,.faq-item,.formbox,.case-card,.article-card,.price-card,.compare-card,.timeline-item,.metric,.network,.helpbox,.service-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:34px;position:relative;overflow:hidden}
    .hero-main:before,.hero-main:after{content:"";position:absolute;border-radius:999px;filter:blur(18px);opacity:.8}
    .hero-main:before{width:220px;height:220px;background:rgba(255,79,216,.18);top:-60px;right:-70px}
    .hero-main:after{width:180px;height:180px;background:rgba(57,208,255,.14);bottom:-50px;left:-60px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.06);border:1px solid var(--line);color:#d9ddff;font-size:13px}
    .hero h2{font-size:clamp(30px,5vw,54px);line-height:1.06;margin:16px 0 14px}
    .hero p{color:var(--muted);font-size:16px;line-height:1.8;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px}
    .mini{padding:14px;border-radius:16px;background:rgba(255,255,255,.05);border:1px solid var(--line)}
    .mini strong{display:block;font-size:18px}
    .mini span{color:var(--muted);font-size:13px}
    .hero-side{padding:22px;display:grid;gap:14px}
    .logo-box{display:flex;align-items:center;gap:12px;padding:14px;border-radius:18px;background:rgba(255,255,255,.05);border:1px solid var(--line)}
    .logo-box img{width:54px;height:54px;object-fit:contain;border-radius:12px;background:#fff;padding:6px}
    .side-list{display:grid;gap:10px}
    .side-list div{padding:12px 14px;border-radius:14px;background:rgba(255,255,255,.05);border:1px solid var(--line);color:#dfe4ff}
    .section{padding:18px 0 2px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}
    .section-head h3{margin:0;font-size:26px}
    .section-head p{margin:0;color:var(--muted)}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .metric,.feature,.case-card,.article-card,.review,.price-card,.compare-card,.service-card,.network,.helpbox{padding:18px}
    .metric .num{font-size:28px;font-weight:800}
    .metric .label,.muted{color:var(--muted)}
    .section-card{padding:22px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .service-card h4,.feature h4,.case-card h4,.article-card h4,.review h4,.price-card h4,.compare-card h4,.helpbox h4{margin:0 0 10px;font-size:18px}
    .pill-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .pill{padding:9px 12px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid var(--line);color:#dfe4ff;font-size:13px}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{padding:18px;border-radius:18px;background:rgba(255,255,255,.05);border:1px solid var(--line);position:relative}
    .step b{display:inline-flex;width:30px;height:30px;border-radius:10px;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--brand),var(--brand2));margin-bottom:12px}
    .table-wrap{overflow-x:auto;border-radius:18px;border:1px solid var(--line)}
    table{width:100%;border-collapse:collapse;min-width:760px;background:rgba(255,255,255,.03)}
    th,td{padding:14px 16px;text-align:left;border-bottom:1px solid rgba(255,255,255,.08);vertical-align:top}
    th{color:#fff;background:rgba(255,255,255,.05)}
    td{color:#dfe4ff}
    .compare-hero{display:grid;grid-template-columns:.9fr 1.1fr;gap:14px}
    .rating{font-size:38px;font-weight:900;color:#fff}
    .stars{color:#ffd166;letter-spacing:2px}
    .faq{display:grid;gap:12px}
    .faq-item summary{list-style:none;cursor:pointer;padding:18px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item p{margin:0;padding:0 18px 18px;color:var(--muted);line-height:1.8}
    .reviews,.articles,.cases,.pricing,.services,.network-grid,.help-grid,.footer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .article-card .tag,.case-card .tag{display:inline-flex;padding:6px 10px;border-radius:999px;background:rgba(255,79,216,.12);color:#ffb5ef;font-size:12px;margin-bottom:10px}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .timeline-item{padding:18px}
    .timeline-item .n{font-size:13px;color:#ffb5ef}
    .formbox form{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .field{display:grid;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-size:13px;color:#d9ddff}
    input,select,textarea{width:100%;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.05);color:#fff;padding:13px 14px;font:inherit;outline:none}
    textarea{min-height:120px;resize:vertical}
    input::placeholder,textarea::placeholder{color:#94a0d8}
    .submit-row{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}
    .footer{margin-top:24px;padding:24px 0 34px;border-top:1px solid var(--line);background:rgba(7,9,18,.72)}
    .footer a{color:#f3b1ff}
    .footer small,.footer p,.footer li{color:var(--muted)}
    .fixed-tools{position:fixed;right:14px;bottom:14px;z-index:60;display:grid;gap:10px}
    .tool{width:48px;height:48px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand2));box-shadow:var(--shadow)}
    .tool.secondary{background:rgba(255,255,255,.08);border:1px solid var(--line)}
    .floating-kefu{position:fixed;left:14px;bottom:14px;z-index:60;max-width:248px;padding:12px;border-radius:18px;background:rgba(18,22,42,.9);border:1px solid var(--line);box-shadow:var(--shadow)}
    .floating-kefu img{width:110px;border-radius:12px;margin-bottom:8px}
    .fade-in{opacity:0;transform:translateY(18px);transition:.7s ease}
    .fade-in.show{opacity:1;transform:none}
    .mobile-only{display:none}
    @media (max-width: 1100px){
      .hero-grid,.compare-hero,.grid-4,.grid-3,.reviews,.articles,.cases,.pricing,.services,.network-grid,.help-grid,.footer-grid,.timeline,.steps{grid-template-columns:repeat(2,1fr)}
      .hero-points{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width: 760px){
      .navlinks,.navcta{display:none}
      .menu-btn{display:inline-flex}
      .mobile-only{display:block}
      .hero{padding-top:22px}
      .hero-grid,.compare-hero,.grid-4,.grid-3,.reviews,.articles,.cases,.pricing,.services,.network-grid,.help-grid,.footer-grid,.timeline,.steps,.hero-points,.formbox form{grid-template-columns:1fr}
      .hero-main,.hero-side,.section-card{padding:20px}
      .section-head{flex-direction:column;align-items:flex-start}
      .floating-kefu{max-width:180px}
      .floating-kefu img{width:100%}
    }
    .mobile-nav{display:none;padding:0 0 14px}
    .mobile-nav.open{display:block}
    .mobile-nav a{display:block;padding:12px 0;color:#dfe4ff;border-top:1px solid rgba(255,255,255,.08)}
    .anchor{scroll-margin-top:90px}