:root{
      --bg:#f5fbf8;
      --panel:#ffffff;
      --panel-2:#eef8f4;
      --line:#d8ebe3;
      --text:#19312a;
      --muted:#5f766f;
      --brand:#18a87a;
      --brand-2:#33c79b;
      --accent:#e9fff7;
      --shadow:0 18px 40px rgba(20, 58, 46, .08);
      --radius:22px;
      --max: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 top left, rgba(51,199,155,.13), transparent 28%),
      radial-gradient(circle at top right, rgba(24,168,122,.10), transparent 26%),
      linear-gradient(180deg, #f8fcfa 0%, #f3faf7 42%, #f7fbf9 100%);
      color:var(--text);line-height:1.65}
    a{color:var(--brand);text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max), calc(100% - 32px)); margin:0 auto}
    header{position:sticky;top:0;z-index:50;background:rgba(245,251,248,.86);backdrop-filter:blur(14px);border-bottom:1px solid rgba(216,235,227,.8)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:18px;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;border:1px solid var(--line);padding:5px}
    .brand strong{display:block;font-size:1.02rem}
    .brand span{display:block;font-size:.85rem;color:var(--muted)}
    .menu{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    .menu a{color:var(--text);font-size:.95rem;padding:8px 10px;border-radius:999px}
    .menu a:hover{background:var(--accent);color:var(--brand)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn,.btn-outline{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;padding:12px 18px;font-weight:700;transition:.25s ease;border:1px solid transparent;cursor:pointer}
    .btn{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 10px 24px rgba(24,168,122,.22)}
    .btn:hover{transform:translateY(-2px)}
    .btn-outline{background:#fff;color:var(--brand);border-color:var(--line)}
    .btn-outline:hover{border-color:var(--brand);transform:translateY(-2px)}
    .mobile-toggle{display:none}
    .hero{padding:42px 0 24px}
    .hero-wrap{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.card,.panel,.faq-item,.form-card,.review,.case,.article,.compare,.pricing,.timeline{background:var(--panel);border:1px solid rgba(216,235,227,.9);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:50%;background:radial-gradient(circle, rgba(51,199,155,.18), rgba(51,199,155,0) 70%)}
    .hero-main:before{width:220px;height:220px;right:-60px;top:-70px}
    .hero-main:after{width:180px;height:180px;right:100px;bottom:-70px}
    .kicker{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:var(--brand);border:1px solid #d7f2e8;padding:8px 14px;border-radius:999px;font-size:.88rem;font-weight:700}
    h1{margin:16px 0 12px;font-size:clamp(2rem,4vw,3.6rem);line-height:1.12}
    .hero p{margin:0;color:var(--muted);font-size:1.02rem;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:26px}
    .stat{padding:16px;background:#f8fcfb;border:1px solid var(--line);border-radius:18px}
    .stat strong{display:block;font-size:1.25rem;color:var(--text)}
    .stat span{display:block;color:var(--muted);font-size:.9rem;margin-top:4px}
    .hero-side{padding:22px;background:linear-gradient(180deg,#ffffff,#f5fbf8)}
    .side-box{padding:18px;border-radius:18px;background:var(--panel-2);border:1px solid var(--line)}
    .side-box + .side-box{margin-top:14px}
    .side-title{display:flex;justify-content:space-between;align-items:center;gap:10px;margin:0 0 8px;font-size:1.02rem}
    .side-list{margin:0;padding-left:18px;color:var(--muted)}
    .section{padding:18px 0 8px}
    .section h2{font-size:clamp(1.5rem,2.4vw,2.2rem);margin:0 0 10px}
    .section p.lead{margin:0 0 20px;color:var(--muted);max-width:76ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .card,.panel,.compare,.pricing,.timeline,.review,.case,.article{padding:20px}
    .card h3,.panel h3,.review h3,.case h3,.article h3{margin:8px 0 10px;font-size:1.08rem}
    .badge{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;background:var(--accent);color:var(--brand);font-size:.84rem;font-weight:700}
    .muted{color:var(--muted)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:#f7fbf9;border:1px solid var(--line);color:var(--text);font-size:.92rem}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{padding:18px;border-radius:20px;background:#fff;border:1px solid var(--line);position:relative}
    .step em{display:inline-flex;width:32px;height:32px;border-radius:50%;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-style:normal;font-weight:800;margin-bottom:10px}
    .table-wrap{overflow-x:auto}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f4fbf7;color:var(--text)}
    .highlight{color:var(--brand);font-weight:800}
    .faq-item{overflow:hidden}
    .faq-q{width:100%;background:none;border:none;padding:18px 20px;text-align:left;font:inherit;color:var(--text);display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease,padding .28s ease;color:var(--muted);padding:0 20px}
    .faq-item.open .faq-a{max-height:180px;padding:0 20px 18px}
    .faq-item.open .faq-q .arrow{transform:rotate(180deg)}
    .arrow{transition:transform .28s ease}
    .form-card form{display:grid;gap:12px}
    .field{display:grid;gap:7px}
    .field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:12px 14px;font:inherit;background:#fff;color:var(--text);outline:none}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(24,168,122,.08)}
    .field textarea{min-height:120px;resize:vertical}
    .footer{margin-top:18px;padding:26px 0 30px;background:#eaf6f1;border-top:1px solid #d6ebe3;color:#214135}
    .footer a{color:#176b52}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .9fr;gap:18px}
    .mini-links{display:flex;flex-wrap:wrap;gap:10px}
    .mini-links a{padding:8px 10px;border-radius:10px;background:#f8fcfa;border:1px solid var(--line)}
    .fixed-contact{position:fixed;right:16px;bottom:18px;z-index:60;display:grid;gap:10px}
    .float-btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 14px;border-radius:999px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 14px 32px rgba(24,168,122,.26);font-weight:700}
    .backtop{position:fixed;right:16px;bottom:80px;z-index:60;opacity:0;pointer-events:none;transition:.25s ease}
    .backtop.show{opacity:1;pointer-events:auto}
    .backtop button{border:none}
    .contact-card{display:grid;grid-template-columns:110px 1fr;gap:14px;align-items:center}
    .contact-card img{width:110px;height:110px;object-fit:cover;border-radius:18px;border:1px solid var(--line);background:#fff}
    .case-grid,.article-grid,.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .timeline{display:grid;gap:14px}
    .timeline-item{display:grid;grid-template-columns:76px 1fr;gap:14px;align-items:start;padding:14px 0;border-bottom:1px dashed var(--line)}
    .timeline-item:last-child{border-bottom:none;padding-bottom:0}
    .timeline-item strong{color:var(--brand)}
    .tabs-note{padding:16px 18px;background:linear-gradient(135deg,#f7fffb,#effaf5);border:1px solid var(--line);border-radius:18px}
    .scroll-reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .scroll-reveal.in{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-wrap,.grid-3,.grid-2,.steps,.case-grid,.article-grid,.review-grid,.footer-grid{grid-template-columns:1fr}
      .hero-stats{grid-template-columns:1fr}
      .contact-card{grid-template-columns:1fr}
      .menu{display:none}
      .mobile-toggle{display:inline-flex}
      .nav.open .menu{display:flex;position:absolute;left:16px;right:16px;top:68px;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px;box-shadow:var(--shadow)}
      .nav.open{position:relative}
      .nav-actions{margin-left:auto}
      .hero-main{padding:26px}
    }