:root{
      --bg:#f4fbf4;
      --panel:#ffffff;
      --panel-2:#f7fff8;
      --line:#d8eadb;
      --text:#16301f;
      --muted:#5d7264;
      --green:#1db954;
      --green-2:#13a447;
      --green-3:#e8fff0;
      --accent:#0f7a37;
      --shadow:0 18px 45px rgba(18, 74, 36, .10);
      --shadow-2:0 10px 24px rgba(18, 74, 36, .12);
      --radius:20px;
      --radius-sm:14px;
      --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;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(29,185,84,.12), transparent 22%),
        radial-gradient(circle at right 18%, rgba(19,164,71,.08), transparent 20%),
        linear-gradient(180deg, #f6fff7 0%, #f4fbf4 36%, #f7faf7 100%);
    }
    img{display:block;max-width:100%}
    a{color:inherit;text-decoration:none}
    .container{width:min(100% - 32px, var(--container));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:saturate(170%) blur(14px);
      background:rgba(244,251,244,.82);
      border-bottom:1px solid rgba(216,234,219,.85);
    }
    .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 .ai-page-logo{width:42px;height:42px;border-radius:12px;object-fit:cover;box-shadow:0 6px 18px rgba(29,185,84,.18)}
    .brand-text{min-width:0}
    .brand-text strong{display:block;font-size:1rem;letter-spacing:.5px}
    .brand-text span{display:block;color:var(--muted);font-size:.82rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .nav-links{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:.94rem;color:#234; padding:8px 10px;border-radius:999px;transition:.2s ease}
    .nav-links a:hover{background:var(--green-3);color:var(--accent)}
    .home-link{background:linear-gradient(135deg,var(--green),var(--green-2));color:#fff !important;box-shadow:0 10px 20px rgba(29,185,84,.22)}
    .menu-btn{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:12px;padding:10px 12px;font-size:1rem}
    .hero{padding:38px 0 18px}
    .hero-grid{
      display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch
    }
    .hero-main,.hero-side,.card,.section-box,.faq-item,.quote-card,.article-card,.contact-card,.compare-box,.timeline,.pricing-card,.service-network{
      background:var(--panel);border:1px solid rgba(216,234,219,.9);border-radius:var(--radius);box-shadow:var(--shadow)
    }
    .hero-main{padding:30px;position:relative;overflow:hidden}
    .hero-main:before,.hero-main:after{
      content:"";position:absolute;border-radius:999px;background:rgba(29,185,84,.12);filter:blur(2px)
    }
    .hero-main:before{width:240px;height:240px;right:-80px;top:-90px}
    .hero-main:after{width:160px;height:160px;right:60px;bottom:-70px;background:rgba(19,164,71,.10)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:var(--green-3);color:var(--accent);font-size:.88rem;font-weight:700}
    h1{margin:16px 0 12px;font-size:clamp(2rem,5vw,3.65rem);line-height:1.08;letter-spacing:-.02em}
    .lead{margin:0;color:var(--muted);font-size:1.02rem;line-height:1.8;max-width:58ch}
    .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:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
      cursor:pointer
    }
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
    .btn-primary{background:linear-gradient(135deg,var(--green),var(--green-2));color:#fff}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--accent)}
    .hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:26px}
    .stat{
      padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff, #f7fff8);
      border:1px solid rgba(216,234,219,.85)
    }
    .stat strong{display:block;font-size:1.35rem;color:var(--accent)}
    .stat span{display:block;color:var(--muted);font-size:.9rem;margin-top:4px;line-height:1.4}
    .hero-side{padding:24px;display:flex;flex-direction:column;gap:14px;justify-content:space-between}
    .side-pill{display:flex;flex-wrap:wrap;gap:10px}
    .tag{display:inline-flex;align-items:center;padding:8px 11px;border-radius:999px;background:#f3fbf4;border:1px solid var(--line);color:#23543a;font-size:.86rem}
    .mini-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .mini-list li{display:flex;gap:10px;align-items:flex-start;padding:12px 12px;border-radius:14px;background:var(--panel-2);border:1px solid var(--line)}
    .dot{width:10px;height:10px;border-radius:50%;margin-top:5px;background:linear-gradient(135deg,var(--green),var(--green-2));flex:none}
    section{padding:18px 0}
    .section-head{display:flex;justify-content:space-between;gap:16px;align-items:end;margin-bottom:16px}
    .section-head h2{margin:0;font-size:clamp(1.4rem,3vw,2rem)}
    .section-head p{margin:0;color:var(--muted);max-width:62ch;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:22px}
    .card h3,.card h4{margin:0 0 10px}
    .card p{margin:0;color:var(--muted);line-height:1.75}
    .service-icon{
      width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,#e9fff0,#d6ffe2);
      display:grid;place-items:center;color:var(--accent);font-weight:900;margin-bottom:14px
    }
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{position:relative;padding:20px;background:linear-gradient(180deg,#fff,#f8fff9);border:1px solid var(--line);border-radius:18px}
    .step-num{display:inline-flex;width:34px;height:34px;border-radius:50%;align-items:center;justify-content:center;background:var(--green-3);color:var(--accent);font-weight:800;margin-bottom:12px}
    .compare-box{padding:18px;overflow:auto}
    table{width:100%;border-collapse:collapse;min-width:820px}
    th,td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f4fbf4;color:#244b34;font-size:.95rem}
    td{color:#365242}
    .badge{display:inline-flex;padding:6px 10px;border-radius:999px;background:var(--green-3);color:var(--accent);font-size:.84rem;font-weight:700}
    .split{
      display:grid;grid-template-columns:1fr 1fr;gap:16px
    }
    .timeline,.pricing-card,.service-network,.contact-card{padding:22px}
    .timeline-list{display:grid;gap:12px;margin:0;padding:0;list-style:none}
    .timeline-list li{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start;padding:12px;border-radius:14px;background:#f8fff9;border:1px solid var(--line)}
    .timeline-list strong{display:block;margin-bottom:4px}
    .quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .quote-card{padding:20px}
    .quote-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
    .stars{color:#ffb400;letter-spacing:2px}
    .avatar{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,#e8fff0,#d4f7dd);color:var(--accent);font-weight:800}
    .articles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .article-card{padding:20px}
    .article-card a{display:inline-flex;margin-top:12px;color:var(--accent);font-weight:700}
    .faq{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-btn{
      width:100%;background:none;border:0;padding:18px 20px;text-align:left;font:inherit;color:var(--text);
      display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer
    }
    .faq-btn span{font-weight:700}
    .faq-panel{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 20px}
    .faq-item.open .faq-panel{max-height:220px;padding-bottom:18px}
    .faq-panel p{margin:0;color:var(--muted);line-height:1.8}
    .contact-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:16px}
    .form{
      display:grid;gap:12px
    }
    .field{display:grid;gap:7px}
    label{font-size:.92rem;font-weight:700;color:#274832}
    input,select,textarea{
      width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--text);
      font:inherit;outline:none;transition:border-color .2s ease, box-shadow .2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(29,185,84,.55);box-shadow:0 0 0 4px rgba(29,185,84,.10)}
    textarea{min-height:120px;resize:vertical}
    .sidebar-stack{display:grid;gap:16px}
    .service-network .chips,.pricing-card .chips{display:flex;flex-wrap:wrap;gap:10px}
    .chips .tag{background:#fff}
    .floating-contact{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .floating-contact a,.top-btn{
      display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:16px;
      background:linear-gradient(135deg,var(--green),var(--green-2));color:#fff;box-shadow:0 12px 25px rgba(29,185,84,.24)
    }
    .top-btn{border:0;cursor:pointer}
    .footer{
      margin-top:18px;padding:24px 0 30px;border-top:1px solid rgba(216,234,219,.9);
      background:linear-gradient(180deg,#f4fbf4,#eef8ef);color:#1d3324
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px;align-items:start}
    .footer a{color:#1b6b37}
    .small{color:var(--muted);font-size:.92rem;line-height:1.7}
    .footer .brand-text span,.footer .small,.footer p,.footer li{color:#355243}
    .footer ul{margin:0;padding:0;list-style:none;display:grid;gap:8px}
    .footer .ai-page-home-link{display:inline-flex}
    .reveal{opacity:0;transform:translateY(16px);transition:.5s ease}
    .reveal.show{opacity:1;transform:none}
    .gallery{
      display:grid;grid-template-columns:1fr 1fr;gap:16px
    }
    .media-card{
      overflow:hidden;border-radius:18px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)
    }
    .media-card .caption{padding:14px 16px;color:var(--muted);font-size:.94rem}
    .media-card img{width:100%;height:auto}
    .price-list{display:grid;gap:12px}
    .price-item{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 16px;border-radius:14px;border:1px solid var(--line);background:#fff}
    .price-item strong{color:var(--accent)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud .tag{background:#fff}
    @media (max-width: 1080px){
      .hero-grid,.split,.contact-grid,.footer-grid,.grid-3,.quotes,.articles,.grid-4,.workflow,.gallery{grid-template-columns:1fr 1fr}
      .hero-main{grid-column:1/-1}
    }
    @media (max-width: 780px){
      .nav-links{display:none}
      .nav-links.open{display:flex;position:absolute;left:16px;right:16px;top:68px;flex-direction:column;align-items:stretch;padding:12px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}
      .menu-btn{display:inline-flex}
      .hero,.site-header .container{position:relative}
      .hero-grid,.split,.contact-grid,.footer-grid,.grid-3,.quotes,.articles,.grid-4,.workflow,.gallery{grid-template-columns:1fr}
      .hero-main,.hero-side,.card,.timeline,.pricing-card,.service-network,.contact-card{padding:20px}
      .hero-stats{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      table{min-width:700px}
      .floating-contact{right:12px;bottom:12px}
    }
    .btn:active,.nav-links a:active,.faq-btn:active{transform:translateY(1px)}