:root{
  --ink:#152232;--muted:#667085;--line:#e6e9ef;--bg:#f7f9fc;--card:#ffffff;--brand:#0f766e;--brand2:#0b5f59;--gold:#b6893b;--soft:#e8f5f3;
  --radius:18px;--shadow:0 12px 30px rgba(21,34,50,.08);
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.72}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1160px,calc(100% - 40px));margin:0 auto}.topbar{font-size:13px;background:#0b2a2a;color:#d7eeee}.topbar .container{display:flex;justify-content:space-between;gap:18px;padding:8px 0}.header{position:sticky;top:0;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);z-index:20;border-bottom:1px solid var(--line)}.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px 0}.brand{display:flex;align-items:center;gap:12px}.brand-logo{height:44px;width:auto;max-width:280px;object-fit:contain}.brand-mark{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--brand),#14b8a6);display:grid;place-items:center;color:white;font-weight:800;letter-spacing:.5px}.brand-cn{font-weight:800;font-size:18px;line-height:1.1}.brand-en{font-size:12px;color:var(--muted);margin-top:2px}.navlinks{display:flex;gap:18px;align-items:center;font-size:15px}.navlinks a{color:#344054}.navlinks a:hover{color:var(--brand)}.cta{background:var(--brand);color:#fff!important;padding:9px 14px;border-radius:999px}.mobile-toggle{display:none;border:1px solid var(--line);background:white;border-radius:10px;padding:8px 10px}.hero{background:radial-gradient(circle at 80% 10%,#bdebe6 0,#ffffff 34%,#f4faf9 100%);padding:82px 0 60px}.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:42px;align-items:center}.eyebrow{display:inline-flex;gap:8px;align-items:center;padding:6px 12px;border-radius:999px;background:var(--soft);color:var(--brand2);font-size:14px;font-weight:700}.h1{font-size:46px;line-height:1.15;margin:18px 0 18px;letter-spacing:-.8px}.lead{font-size:18px;color:#3b4a5b;max-width:780px}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:12px;padding:12px 18px;font-weight:700;border:1px solid transparent}.btn.primary{background:var(--brand);color:#fff}.btn.secondary{background:#fff;border-color:var(--line);color:var(--ink)}.hero-card{background:rgba(255,255,255,.8);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}.fact-list{display:grid;gap:14px}.fact{display:flex;gap:12px}.fact b{display:block}.fact span{color:var(--muted);font-size:14px}.icon{width:30px;height:30px;border-radius:10px;background:var(--soft);color:var(--brand);display:grid;place-items:center;flex:0 0 auto;font-weight:800}.section{padding:70px 0}.section.alt{background:var(--bg)}.section-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:28px}.section-title{font-size:32px;line-height:1.22;margin:0}.section-desc{color:var(--muted);max-width:700px;margin:10px 0 0}.grid{display:grid;gap:22px}.grid.cols-3{grid-template-columns:repeat(3,1fr)}.grid.cols-2{grid-template-columns:repeat(2,1fr)}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 8px 24px rgba(21,34,50,.04)}.card h3{margin:0 0 10px;font-size:20px}.card p{margin:0;color:var(--muted)}.tagrow{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.tag{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 11px;font-size:14px;color:#344054}.statband{background:#0b2a2a;color:white;border-radius:26px;padding:28px;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.stat strong{font-size:30px;display:block}.stat span{color:#b7d1d1;font-size:14px}.timeline{position:relative;display:grid;gap:16px}.timeitem{display:grid;grid-template-columns:120px 1fr;gap:20px;padding:20px;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.year{font-weight:900;color:var(--brand);font-size:20px}.media-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px}.media-box{min-height:180px;border:1px dashed #b8c2d0;border-radius:18px;background:linear-gradient(135deg,#f8fafc,#eef6f5);display:flex;align-items:center;justify-content:center;text-align:center;color:#607082;padding:20px}.page-hero{background:linear-gradient(135deg,#f4fbfa,#fff);padding:58px 0;border-bottom:1px solid var(--line)}.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:12px}.page-title{font-size:40px;line-height:1.15;margin:0 0 14px}.content{display:grid;grid-template-columns:260px 1fr;gap:36px;align-items:start}.toc{position:sticky;top:94px;border:1px solid var(--line);border-radius:16px;padding:18px;background:#fff}.toc a{display:block;color:var(--muted);font-size:14px;padding:7px 0}.toc a:hover{color:var(--brand)}.article h2{font-size:28px;margin:34px 0 12px}.article h3{font-size:21px;margin:26px 0 10px}.article p{color:#3b4a5b}.article ul{padding-left:22px;color:#3b4a5b}.note{background:#fff8eb;border:1px solid #f1d8a8;color:#6f4d14;border-radius:16px;padding:18px}.proof-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.footer{background:#0b2a2a;color:#d7eeee;padding:46px 0 24px}.footer-grid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:28px}.footer h4{color:white;margin:0 0 12px}.footer a,.footer p{color:#b7d1d1;font-size:14px;margin:7px 0;display:block}.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:30px;padding-top:18px;color:#9fbcbc;font-size:13px}.faq details{background:#fff;border:1px solid var(--line);border-radius:16px;margin-bottom:12px;padding:16px}.faq summary{cursor:pointer;font-weight:800}.faq p{color:#3b4a5b}.formbox{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px}.contact-list{display:grid;gap:14px}.contact-item{display:flex;gap:12px;align-items:flex-start;padding:14px;border:1px solid var(--line);border-radius:14px;background:#fff}.pill{display:inline-block;background:var(--soft);color:var(--brand2);border-radius:999px;padding:4px 10px;font-size:13px;font-weight:700;margin:3px 6px 3px 0}.print-note{font-size:13px;color:var(--muted)}
.comparison-table{width:100%;border-collapse:collapse;margin:18px 0 24px;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;display:table}.comparison-table th,.comparison-table td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}.comparison-table th{background:#f3faf9;color:#0b5f59;font-weight:800}.comparison-table td:first-child{font-weight:800;color:#152232}.article ol{padding-left:22px;color:#3b4a5b}.article .subsection-title{font-size:22px;margin:24px 0 10px;color:#152232}.license-highlight{background:#f7fbfb;border:1px solid var(--line);border-radius:18px;padding:20px;margin:18px 0}.license-highlight p:last-child{margin-bottom:0}
@media(max-width:900px){.brand-logo{height:36px;max-width:220px}.topbar{display:none}.mobile-toggle{display:block}.navlinks{display:none;position:absolute;left:20px;right:20px;top:76px;background:white;border:1px solid var(--line);border-radius:18px;padding:16px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start}.navlinks.open{display:flex}.hero-grid,.content,.grid.cols-3,.grid.cols-2,.footer-grid,.statband,.media-grid,.proof-grid{grid-template-columns:1fr}.h1{font-size:34px}.page-title{font-size:32px}.section-head{display:block}.toc{position:static}.timeitem{grid-template-columns:1fr}.container{width:min(100% - 28px,1160px)}}

.lang-link{font-weight:800;color:var(--brand)!important}