:root{--bg:#f4f8f2;--bg2:#ffffff;--card:#ffffff;--text:#17301f;--muted:#587061;--line:#dbe8d8;--green:#29c35a;--green2:#1fa84b;--green3:#dff8e7;--shadow:0 16px 40px rgba(27,82,44,.09);--radius:22px;--container:1180px}
    *{box-sizing:border-box} html{scroll-behavior:smooth}
    body{margin:0;font-family:Arial,Helvetica,"PingFang SC","Microsoft YaHei",sans-serif;background:linear-gradient(180deg,#eff8ea 0,#f8fbf6 18%,#ffffff 100%);color:var(--text);line-height:1.7}
    a{color:inherit;text-decoration:none} img{display:block;max-width:100%;height:auto}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    .topbar{position:sticky;top:0;z-index:50;background:rgba(248,251,246,.88);backdrop-filter:blur(12px);border-bottom:1px solid rgba(219,232,216,.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 strong{font-size:18px}.brand span{display:block;font-size:12px;color:var(--muted)}
    .brand .logo-wrap{width:40px;height:40px;border-radius:12px;background:#fff;border:1px solid var(--line);display:grid;place-items:center;overflow:hidden;box-shadow:var(--shadow)}
    .menu{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}.menu a{font-size:14px;color:var(--muted)} .menu a:hover{color:var(--green2)}
    .nav-cta{display:flex;gap:10px;align-items:center}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 16px;border-radius:999px;border:1px solid transparent;font-weight:700;transition:.25s ease;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--green) 0,var(--green2) 100%);color:#fff;box-shadow:0 10px 22px rgba(41,195,90,.22)} .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px)} .mobile-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
    .hero{padding:32px 0 18px;position:relative;overflow:hidden}.hero:before,.hero:after{content:"";position:absolute;border-radius:50%;background:radial-gradient(circle,rgba(41,195,90,.18),rgba(41,195,90,0) 62%)}
    .hero:before{width:320px;height:320px;right:-90px;top:-70px}.hero:after{width:240px;height:240px;left:-80px;bottom:-40px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.card,.panel,.faq-item,.review,.article,.timeline li,.metric,.tagcloud a,.form-box,.compare,.service-card,.case-card,.faq-surface{background:rgba(255,255,255,.9);border:1px solid rgba(219,232,216,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:34px}
    h1{margin:0 0 14px;font-size:clamp(30px,5vw,54px);line-height:1.08;letter-spacing:-.03em}
    .lead{font-size:16px;color:var(--muted);max-width:58ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}.hero-points div{padding:14px;border-radius:16px;background:linear-gradient(180deg,#f6fff8,#eef9f1);border:1px solid #d8eadb}
    .hero-points strong{display:block;font-size:18px}.hero-points span{font-size:13px;color:var(--muted)}
    .hero-side{padding:22px;display:grid;gap:14px}.mini-title{font-size:14px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
    .metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:18px 0 0}.metric{padding:18px}.metric b{font-size:26px;display:block}.metric span{color:var(--muted);font-size:13px}
    section{padding:20px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}.section-head h2{margin:0;font-size:28px}.section-head p{margin:0;color:var(--muted);max-width:60ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .card,.service-card,.case-card,.review,.article,.panel,.faq-item,.form-box,.compare{padding:20px}
    .service-card h3,.card h3,.case-card h3,.review h3,.article h3{margin:10px 0 8px;font-size:18px}.muted{color:var(--muted)}
    .icon{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,#dff9e8,#bff0cf);display:grid;place-items:center;color:#14863a;font-weight:800}
    .tagcloud{display:flex;gap:10px;flex-wrap:wrap}.tagcloud a{padding:10px 14px;font-size:13px;color:#245035;background:#f7fbf6}
    .timeline{list-style:none;padding:0;margin:0;display:grid;gap:12px}.timeline li{padding:16px 18px;display:flex;gap:12px;align-items:flex-start}
    .timeline .dot{width:12px;height:12px;border-radius:50%;margin-top:7px;background:var(--green)}
    .compare-wrap{overflow:auto}.compare table{width:100%;border-collapse:separate;border-spacing:0 10px;min-width:860px}.compare th,.compare td{padding:14px 14px;text-align:left;background:#fff}.compare th{color:var(--muted);font-size:13px}
    .compare tr td:first-child,.compare tr th:first-child{border-radius:14px 0 0 14px}.compare tr td:last-child,.compare tr th:last-child{border-radius:0 14px 14px 0}
    .rating{display:inline-flex;gap:4px;color:#ffb400}.faq-item button{width:100%;background:none;border:0;padding:0;text-align:left;font:inherit;color:var(--text);display:flex;justify-content:space-between;align-items:center;cursor:pointer}
    .faq-content{max-height:0;overflow:hidden;transition:max-height .3s ease;color:var(--muted)} .faq-item.open .faq-content{max-height:220px;margin-top:10px}
    .reviews,.articles{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .review small{color:var(--muted)} .quote{font-size:15px;color:#254030}
    .form-box form{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.form-box label{display:grid;gap:8px;font-size:14px;color:var(--muted)}
    .form-box input,.form-box select,.form-box textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:var(--text)} .form-box textarea{min-height:120px;grid-column:1/-1;resize:vertical}
    .form-box .full{grid-column:1/-1}.form-box .submit{grid-column:1/-1;justify-content:flex-start}
    .floating{position:fixed;right:16px;bottom:16px;z-index:40;display:grid;gap:10px}.float-btn{width:52px;height:52px;border-radius:16px;background:var(--green2);color:#fff;display:grid;place-items:center;box-shadow:var(--shadow)}
    .backtop{background:#fff;color:var(--green2);border:1px solid var(--line)}
    footer{padding:24px 0 28px;color:#355044}.footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
    .footer-links{display:flex;gap:10px;flex-wrap:wrap}.footer-links a{font-size:13px;color:#35624b}
    .small{font-size:13px}.sep{height:1px;background:linear-gradient(90deg,transparent,#dbe8d8,transparent);margin:18px 0}
    .reveal{opacity:0;transform:translateY(16px);transition:.55s ease}.reveal.in{opacity:1;transform:none}
    @media (max-width: 960px){.hero-grid,.grid-3,.grid-2,.reviews,.articles,.metric-grid,.footer-grid{grid-template-columns:1fr 1fr}.hero-points{grid-template-columns:1fr}.menu{display:none}.mobile-toggle{display:inline-flex}.menu.open{display:flex;position:absolute;left:16px;right:16px;top:70px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;flex-direction:column;align-items:flex-start;box-shadow:var(--shadow)}}
    @media (max-width: 680px){.hero{padding-top:18px}.hero-main{padding:22px}.hero-grid,.grid-3,.grid-2,.reviews,.articles,.metric-grid,.footer-grid,.form-box form{grid-template-columns:1fr}.section-head{align-items:flex-start;flex-direction:column}.nav{position:relative}.nav-cta .btn-ghost{display:none}.floating{right:12px;bottom:12px}}