:root{
      --bg:#f7f8fc;
      --bg2:#eef4ff;
      --card:#ffffff;
      --text:#182033;
      --muted:#5f6b85;
      --line:#dbe3f3;
      --brand:#2563eb;
      --brand2:#00b3ff;
      --brand3:#7c3aed;
      --gold:#f59e0b;
      --shadow:0 18px 50px rgba(24,32,51,.08);
      --shadow2:0 10px 30px rgba(37,99,235,.12);
      --radius:22px;
      --radius2:16px;
      --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:linear-gradient(180deg,var(--bg2) 0%,#ffffff 22%,var(--bg) 100%);color:var(--text)}
    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(247,248,252,.84);backdrop-filter:blur(16px);border-bottom:1px solid rgba(219,227,243,.7)}
    .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;border-radius:12px;background:#fff;padding:4px;box-shadow:0 8px 18px rgba(0,0,0,.06)}
    .brand strong{display:block;font-size:1.05rem}
    .brand span{display:block;font-size:.82rem;color:var(--muted)}
    .menu{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .menu a{font-size:.95rem;color:#33415f;padding:8px 10px;border-radius:999px;transition:.25s}
    .menu a:hover,.menu a.active{background:#e8f1ff;color:var(--brand)}
    .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:.25s ease;cursor:pointer;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:var(--shadow2)}
    .btn-primary:hover{transform:translateY(-2px);filter:saturate(1.05)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:#bfd0f3;transform:translateY(-1px)}
    .mobile-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px}
    .hero{position:relative;overflow:hidden;padding:42px 0 26px}
    .hero::before,.hero::after{content:"";position:absolute;border-radius:999px;filter:blur(20px);pointer-events:none}
    .hero::before{width:280px;height:280px;background:rgba(37,99,235,.14);top:40px;right:-80px}
    .hero::after{width:220px;height:220px;background:rgba(124,58,237,.12);bottom:10px;left:-70px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
    .hero-copy,.hero-panel,.card,.stat,.quote,.faq-item,.timeline-item,.case,.article,.compare,.form-wrap,.info-box{background:rgba(255,255,255,.84);backdrop-filter:blur(10px);border:1px solid rgba(219,227,243,.9);box-shadow:var(--shadow);border-radius:var(--radius)}
    .hero-copy{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#eef5ff;color:var(--brand);border:1px solid #d6e5ff;border-radius:999px;padding:8px 12px;font-size:.88rem;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(2rem,4vw,3.7rem);line-height:1.08;letter-spacing:-.03em}
    .hero-copy p{margin:0;color:var(--muted);font-size:1.02rem;line-height:1.8;max-width:60ch}
    .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:26px}
    .mini{padding:14px;border-radius:18px;background:linear-gradient(180deg,#ffffff,#f5f8ff);border:1px solid #e0e7f5}
    .mini strong{display:block;font-size:1rem;margin-bottom:4px}
    .mini span{color:var(--muted);font-size:.9rem;line-height:1.6}
    .hero-panel{padding:22px;display:grid;gap:14px;align-content:start}
    .hero-panel .panel-head{display:flex;justify-content:space-between;align-items:center;gap:12px}
    .tag{display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border-radius:999px;background:#fff5e6;color:#a16207;font-size:.82rem;font-weight:700}
    .stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .stat{padding:16px;background:linear-gradient(180deg,#ffffff,#f7fbff)}
    .stat b{display:block;font-size:1.2rem}
    .stat small{color:var(--muted);line-height:1.5}
    .section{padding:22px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin:0 0 16px}
    .section-head h2{margin:0;font-size:clamp(1.4rem,2.2vw,2.2rem)}
    .section-head p{margin:0;color:var(--muted);max-width:64ch;line-height:1.7}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .card{padding:20px;transition:transform .25s ease,box-shadow .25s ease}
    .card:hover{transform:translateY(-4px);box-shadow:0 22px 42px rgba(24,32,51,.12)}
    .card h3{margin:10px 0 8px;font-size:1.08rem}
    .card p,.card li,.table td,.table th,.article p,.quote p,.faq-content{color:var(--muted);line-height:1.75}
    .icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#eaf2ff,#f2e9ff);color:var(--brand);font-weight:900}
    .soft-list{margin:12px 0 0;padding:0;list-style:none;display:grid;gap:10px}
    .soft-list li{position:relative;padding-left:18px}
    .soft-list li::before{content:"";position:absolute;left:0;top:.7em;width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand3))}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .pill{padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#33415f;font-size:.92rem}
    .panel-split{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .timeline{display:grid;gap:14px}
    .timeline-item{padding:18px}
    .timeline-item strong{display:block;margin-bottom:4px}
    .compare{overflow:hidden}
    .table-wrap{overflow:auto}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;border-bottom:1px solid #e7edf8;text-align:left;vertical-align:top}
    th{background:#f6f9ff;color:#24314f;font-size:.95rem}
    .rating{display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border-radius:999px;background:#eef9f2;color:#117a3a;font-weight:800}
    .best{font-weight:800;color:#0b5bd3}
    .process{counter-reset:step}
    .step{padding:20px}
    .step::before{counter-increment:step;content:counter(step);display:inline-grid;place-items:center;width:34px;height:34px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand3));color:#fff;font-weight:800;margin-bottom:12px}
    .cases{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .case{padding:18px;overflow:hidden}
    .case img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:16px;margin-bottom:14px}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .quote{padding:20px}
    .quote .meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
    .stars{color:#f59e0b;letter-spacing:2px}
    .articles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .article{padding:18px}
    .article a{color:var(--brand);font-weight:700}
    .form-wrap{padding:22px}
    form{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:grid;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-weight:700;color:#2a3550}
    input,select,textarea{width:100%;border:1px solid var(--line);background:#fff;border-radius:14px;padding:13px 14px;font:inherit;color:var(--text);outline:none;transition:border-color .2s,box-shadow .2s}
    input:focus,select:focus,textarea:focus{border-color:#8eb5ff;box-shadow:0 0 0 4px rgba(37,99,235,.08)}
    textarea{min-height:130px;resize:vertical}
    .faq{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;background:transparent;border:0;padding:18px 20px;font:inherit;color:var(--text);text-align:left;cursor:pointer}
    .faq-q strong{font-size:1rem}
    .faq-q span{transition:transform .25s ease;color:var(--brand);font-size:1.2rem}
    .faq-item.open .faq-q span{transform:rotate(45deg)}
    .faq-content{display:none;padding:0 20px 18px}
    .faq-item.open .faq-content{display:block}
    .footer{margin-top:18px;background:#101828;color:#d6deee}
    .footer .container{padding:26px 0}
    .footer a{color:#ffffff}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px}
    .footer h3{margin:0 0 12px;color:#fff}
    .footer p,.footer li,.footer small{color:#b9c5de;line-height:1.8}
    .footer ul{margin:0;padding:0;list-style:none;display:grid;gap:8px}
    .bottom{margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
    .float-actions{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .float-actions a,.float-actions button{width:48px;height:48px;border-radius:16px;border:0;display:grid;place-items:center;background:#fff;box-shadow:var(--shadow2);color:var(--brand);cursor:pointer}
    .home-link{font-weight:800;color:var(--brand)}
    .reveal{opacity:0;transform:translateY(14px);transition:.6s ease}
    .reveal.show{opacity:1;transform:none}
    @media (max-width: 1024px){
      .hero-grid,.grid-3,.grid-4,.cases,.reviews,.articles,.footer-grid,.panel-split{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .section-head,.nav{align-items:flex-start}
      .menu{display:none;width:100%;padding:8px 0 0}
      .menu.open{display:flex;flex-direction:column;align-items:flex-start;gap:8px}
      .nav{flex-wrap:wrap}
      .mobile-toggle{display:inline-grid;place-items:center}
      form{grid-template-columns:1fr}
      .nav-actions{margin-left:auto}
    }
    @media (max-width: 640px){
      .container{width:min(var(--container),calc(100% - 22px))}
      .hero-copy{padding:22px}
      .hero-panel,.card,.compare,.form-wrap,.quote,.case,.article,.faq-item,.step,.timeline-item{border-radius:18px}
      .btn{width:100%}
      .nav-actions{width:100%}
      .nav-actions .btn{flex:1}
      .bottom{flex-direction:column}
      .table-wrap{margin:0 -8px}
      table{min-width:860px}
    }