:root{--ink:#10251F;--muted:#5B6E67;--paper:#FBFDFC;--brand:#0B7A63;--brand-deep:#075A49;--brand-soft:#E7F4EF;--line:#DDE7E2;--radius:14px}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;background:var(--paper);color:var(--ink);line-height:1.7;font-size:16px}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
header.site{position:sticky;top:0;z-index:50;background:rgba(251,253,252,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
nav{display:flex;align-items:center;justify-content:space-between;height:66px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--brand-deep);text-decoration:none}
.logo img{flex:none}
.nav-links{display:flex;gap:22px;list-style:none;flex-wrap:wrap}
.nav-links a{color:var(--ink);text-decoration:none;font-size:15px;font-weight:500}
.nav-links a:hover{color:var(--brand)}
.nav-links a.active{color:var(--brand-deep);font-weight:700}
.nav-cta{background:var(--brand);color:#fff;border:none;border-radius:999px;padding:9px 18px;font-size:14px;font-weight:600;cursor:pointer;flex:none}
.nav-cta:hover{background:var(--brand-deep)}
.page-hero{background:var(--brand-deep);color:#fff;padding:52px 0}
.page-hero h1{font-size:clamp(26px,3.6vw,38px);font-weight:800}
.page-hero p{margin-top:12px;opacity:.9;max-width:720px}
.crumbs{font-size:13px;opacity:.8;margin-bottom:14px}
.crumbs a{color:#fff;opacity:.85}
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:12px 22px;font-size:15px;font-weight:600;cursor:pointer;border:none;text-decoration:none}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-deep)}
.article{max-width:860px;margin:0 auto;padding:44px 0 0}
.article .cat-badge{display:inline-block;font-size:12px;font-weight:700;color:var(--brand-deep);background:var(--brand-soft);border-radius:999px;padding:4px 12px;margin-bottom:14px}
.article h1{font-size:clamp(24px,3.2vw,34px);font-weight:800;line-height:1.35}
.article .meta{margin-top:14px;font-size:13px;color:var(--muted);display:flex;gap:14px;flex-wrap:wrap}
.article .body{margin-top:28px;font-size:16px}
.article .body p{margin-bottom:16px}
.article .body h3{margin:28px 0 10px;font-size:18px;font-weight:700}
.article .body figure{margin:20px 0;text-align:center}
.article .body figure img{max-width:100%;height:auto;border-radius:var(--radius);border:1px solid var(--line)}
.article .body figcaption{font-size:12px;color:var(--muted);margin-top:6px}
.article .body blockquote{border-left:4px solid var(--brand);background:var(--brand-soft);padding:12px 18px;border-radius:0 10px 10px 0;margin:18px 0;color:var(--ink)}
.article .body table{width:100%;border-collapse:collapse;margin:16px 0;table-layout:fixed}
.article .body th,.article .body td{border:1px solid var(--line);padding:10px 12px;font-size:14.5px;text-align:left;vertical-align:top}
.article .body th{background:var(--brand-soft);font-weight:700}
.answer-box{background:#fff;border:1px solid var(--brand);border-left:4px solid var(--brand);border-radius:12px;padding:18px 22px;margin:26px 0;font-size:15.5px;line-height:1.9}
.answer-box b{color:var(--brand-deep);display:block;margin-bottom:4px}
.article-nav{display:flex;justify-content:space-between;gap:16px;margin:40px 0;padding-top:26px;border-top:1px solid var(--line);font-size:14px;flex-wrap:wrap}
.article-nav a{color:var(--brand-deep);text-decoration:none;max-width:46%}
.article-nav a:hover{color:var(--brand)}
.article-nav .back{width:100%;margin-top:14px;color:var(--muted)}
.article-nav .back a{color:var(--brand)}
.cta{background:var(--brand-deep);color:#fff;margin:0 0 64px}
.cta .wrap{text-align:center;padding:22px 0}
.cta h2{font-size:clamp(22px,3vw,30px);font-weight:800}
.cta p{margin:12px 0 22px;opacity:.9}
.cta a{background:#fff;color:var(--brand-deep);font-weight:700}
footer{border-top:1px solid var(--line);padding:40px 0 56px;font-size:14px;color:var(--muted)}
.foot-grid{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.foot-grid b{color:var(--ink);font-size:15px}
@media (max-width:860px){
  .nav-links{position:absolute;top:66px;left:0;right:0;display:none;flex-direction:column;gap:0;background:#fff;border-bottom:1px solid var(--line);padding:6px 0;box-shadow:0 12px 24px rgba(16,37,31,.08)}
  .nav-links li{list-style:none;width:100%}
  .nav-links a{display:block;padding:13px 24px;font-size:16px;border-top:1px solid var(--line)}
  .nav-links li:first-child a{border-top:none}
  .nav-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;width:44px;height:44px;cursor:pointer;flex:none}
  .nav-btn span{display:block;width:22px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s,opacity .25s}
  .nav-toggle{position:absolute;opacity:0;width:0;height:0;pointer-events:none}
  .nav-toggle:checked~.nav-btn span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav-toggle:checked~.nav-btn span:nth-child(2){opacity:0}
  .nav-toggle:checked~.nav-btn span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .nav-toggle:checked~.nav-links{display:flex}
  .nav-cta{display:none}
  .fab{display:none}
  .article-nav a{max-width:100%}
  .article .body table{font-size:13px}
}

a.skip-link:focus{left:0;width:auto;height:auto;overflow:visible}