:root{
      --bg:#f6f7fb;
      --panel:#ffffff;
      --panel-2:#fff8ee;
      --text:#162033;
      --muted:#5e687c;
      --line:#e6e9f0;
      --brand:#ff5b5f;
      --brand2:#ffb347;
      --brand3:#2f7cf6;
      --shadow:0 18px 45px rgba(16,24,40,.08);
      --radius:22px;
      --radius-sm:16px;
      --max:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:
      radial-gradient(circle at 10% 10%, rgba(255,91,95,.08), transparent 22%),
      radial-gradient(circle at 90% 8%, rgba(47,124,246,.08), transparent 24%),
      linear-gradient(180deg,#fff 0%, #f8f9fd 28%, #f6f7fb 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max),calc(100% - 32px));margin:0 auto}
    .topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);backdrop-filter:blur(14px);border-bottom:1px solid rgba(230,233,240,.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 strong{font-size:18px;letter-spacing:.4px}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
    .nav-links{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:flex-end}
    .nav-links a{padding:8px 12px;border-radius:999px;color:#30405e;font-size:14px}
    .nav-links a:hover,.nav-links a:focus{background:#fff;box-shadow:0 8px 20px rgba(16,24,40,.08)}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer;transition:.25s ease;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),#ff7a59);color:#fff;box-shadow:0 12px 28px rgba(255,91,95,.24)}
    .btn-secondary{background:#fff;color:#20304a;border:1px solid var(--line)}
    .btn:hover{transform:translateY(-2px)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px}
    .hero{padding:40px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:20px;align-items:stretch}
    .hero-main{position:relative;overflow:hidden;background:linear-gradient(135deg,#0f172a 0%, #18274e 45%, #2b1658 100%);color:#fff;border-radius:28px;padding:36px;box-shadow:var(--shadow)}
    .hero-main:before,.hero-main:after{content:"";position:absolute;border-radius:50%;filter:blur(8px);opacity:.7}
    .hero-main:before{width:220px;height:220px;background:rgba(255,91,95,.18);right:-40px;top:-50px}
    .hero-main:after{width:180px;height:180px;background:rgba(255,179,71,.16);left:-50px;bottom:-60px}
    .hero-kicker{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.16);padding:8px 12px;border-radius:999px;font-size:13px}
    h1{font-size:clamp(30px,5vw,54px);line-height:1.08;margin:16px 0 14px;max-width:12em}
    .hero p{color:rgba(255,255,255,.84);font-size:16px;line-height:1.8;max-width:58ch;margin:0 0 22px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:18px}
    .hero-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
    .meta-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.13);border-radius:18px;padding:14px}
    .meta-card b{font-size:22px;display:block}
    .meta-card span{display:block;color:rgba(255,255,255,.72);font-size:13px;margin-top:4px}
    .hero-side{display:grid;gap:16px}
    .quick-card,.note-card{background:var(--panel);border-radius:24px;padding:22px;box-shadow:var(--shadow);border:1px solid rgba(230,233,240,.9)}
    .quick-card h2,.section-title{font-size:24px;margin:0 0 12px}
    .quick-card p,.note-card p{margin:0;color:var(--muted);line-height:1.8}
    .pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
    .pill{padding:8px 12px;background:#f3f6ff;color:#26406a;border-radius:999px;font-size:13px}
    section{padding:18px 0}
    .section-card{background:rgba(255,255,255,.92);border:1px solid rgba(230,233,240,.9);box-shadow:var(--shadow);border-radius:28px;padding:24px}
    .section-head{display:flex;justify-content:space-between;gap:12px;align-items:end;margin-bottom:18px}
    .section-head p{margin:0;color:var(--muted);line-height:1.7;max-width:70ch}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .stat,.feature,.case,.review,.info-box,.timeline-item,.faq-item,.article-item,.network,.price-box{background:linear-gradient(180deg,#fff 0%, #fffaf4 100%);border:1px solid var(--line);border-radius:22px;padding:18px;transition:.25s ease}
    .stat:hover,.feature:hover,.case:hover,.review:hover,.info-box:hover,.timeline-item:hover,.article-item:hover,.network:hover,.price-box:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(16,24,40,.08)}
    .stat b,.feature h3,.case h3,.review h3{display:block;font-size:20px;margin-bottom:6px}
    .stat small,.feature p,.case p,.review p{color:var(--muted);line-height:1.8}
    .highlight{color:var(--brand);font-weight:800}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:9px 12px;background:#fff;border:1px solid var(--line);border-radius:999px;font-size:13px;color:#32455f}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;position:relative}
    .step .num{width:36px;height:36px;border-radius:12px;background:linear-gradient(135deg,var(--brand2),var(--brand));color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:12px}
    .table-wrap{overflow:auto;border-radius:22px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f8faff;font-size:14px;color:#30405e}
    td{color:#3a4a64;line-height:1.7}
    .rating{display:grid;grid-template-columns:1fr 1fr;gap:14px;align-items:start}
    .score-box{background:linear-gradient(135deg,#fff6f1,#fff);border:1px solid #ffd8c8;border-radius:24px;padding:22px}
    .score-line{display:flex;justify-content:space-between;gap:10px;margin-bottom:10px}
    .score-stars{font-size:28px;color:#ffb347;letter-spacing:2px}
    .faq-item summary{list-style:none;cursor:pointer;font-weight:700;display:flex;justify-content:space-between;gap:10px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item p{margin:12px 0 0;color:var(--muted);line-height:1.8}
    .reviews-grid,.articles-grid,.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .review .role{color:#6a7590;font-size:13px;margin-bottom:10px}
    .article-item a{font-weight:700;color:#19335d}
    .article-item time{display:block;color:#7a8497;font-size:13px;margin-top:8px}
    .form-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:14px}
    form{display:grid;gap:12px}
    label{font-size:14px;font-weight:700;color:#30405e}
    input,select,textarea{width:100%;border:1px solid var(--line);border-radius:16px;padding:13px 14px;font:inherit;color:var(--text);background:#fff;outline:none;transition:.2s ease}
    input:focus,select:focus,textarea:focus{border-color:#ff9070;box-shadow:0 0 0 4px rgba(255,91,95,.1)}
    textarea{min-height:130px;resize:vertical}
    .footer{padding:18px 0 34px}
    .footer-card{background:#111827;color:#d7def0;border-radius:28px;padding:24px;box-shadow:var(--shadow)}
    .footer-card a{color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:8px 10px;border-radius:999px;background:rgba(255,255,255,.06)}
    .copyright{margin-top:14px;color:#aab4c7;font-size:13px;line-height:1.7}
    .floating{position:fixed;right:16px;bottom:16px;display:grid;gap:10px;z-index:60}
    .float-btn{width:52px;height:52px;border-radius:18px;border:0;display:grid;place-items:center;box-shadow:0 16px 30px rgba(16,24,40,.18);cursor:pointer}
    .float-a{background:linear-gradient(135deg,var(--brand),#ff7a59);color:#fff}
    .float-b{background:#fff;color:#24344f;border:1px solid var(--line)}
    .drawer{display:none}
    .mobile-only{display:none}
    .scroll-reveal{opacity:0;transform:translateY(16px);transition:.55s ease}
    .scroll-reveal.in{opacity:1;transform:none}
    .badge{display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border-radius:999px;background:#eef4ff;color:#2750a7;font-size:13px;font-weight:700}
    .mini-list{display:grid;gap:10px;margin:14px 0 0;padding:0;list-style:none}
    .mini-list li{display:flex;gap:10px;align-items:flex-start;color:#42526f;line-height:1.7}
    .mini-list li:before{content:"•";color:var(--brand);font-size:18px;line-height:1}
    .cover{border-radius:24px;overflow:hidden;border:1px solid var(--line);background:#fff}
    .cover img{width:100%;height:auto}
    @media (max-width: 980px){
      .hero-grid,.form-grid,.footer-grid,.rating,.grid-4,.grid-3,.grid-2,.workflow,.reviews-grid,.articles-grid,.cases-grid{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .drawer{display:none;padding:0 0 16px}
      .drawer.open{display:block}
      .drawer .nav-links{display:flex;justify-content:flex-start}
      .hero{padding-top:26px}
      .hero-main{padding:26px}
      .hero-meta{grid-template-columns:1fr}
      .mobile-only{display:block}
    }