:root{
  --green:#2e7d32; --green-dark:#1b5e20; --green-soft:#e8f5e9;
  --ink:#263238; --ink-soft:#546e7a; --ink-mute:#90a4ae;
  --bg:#fafdf9; --bg-soft:#f2f7f0; --radius:10px;
}
*{box-sizing:border-box}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;color:var(--ink);background:var(--bg);line-height:1.75}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
a{color:var(--green-dark);text-decoration:none}
a:hover{text-decoration:underline}
h1{font-size:28px}
h2{font-size:22px}
/* header */
.site-header{background:var(--green-dark);color:#fff;position:sticky;top:0;z-index:10}
.header-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;padding:12px 20px}
.logo{font-size:24px;font-weight:700;color:#fff;text-decoration:none}
.logo span{color:#a5d6a7}
.main-nav ul{list-style:none;display:flex;gap:4px;margin:0;padding:0;flex-wrap:wrap}
.main-nav a{color:#dcefe0;padding:6px 10px;border-radius:6px;font-size:15px}
.main-nav a:hover{background:rgba(255,255,255,.12);color:#fff;text-decoration:none}
.header-search{margin:4px 0 4px auto;max-width:none}
.header-search input{width:340px;padding:7px 12px;border:1px solid #cfe3d2;border-radius:6px 0 0 6px;font-size:14px;outline:none}
.header-search button{padding:7px 14px;background:var(--green);color:#fff;border:none;border-radius:0 6px 6px 0;cursor:pointer;font-size:14px}
.feat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.feat-group{background:#fff;border:1px solid #e0ebe0;border-radius:var(--radius);padding:14px 16px}
.feat-group h3{margin:0 0 8px;font-size:15px;color:var(--green-dark);border-left:3px solid var(--green);padding-left:8px}
.feat-group li a{font-size:14px}
@media(max-width:860px){.header-search{margin-left:0;width:100%}.header-search input{flex:1;width:auto}}
/* hero */
.hero{background:linear-gradient(135deg,var(--green-soft),#f1f8e9);border-radius:var(--radius);padding:40px 32px;margin:24px 0;text-align:center}
.hero h1{margin:0 0 10px;font-size:30px}
.hero p{color:var(--ink-soft);max-width:760px;margin:0 auto 18px}
/* sections */
.section{margin:28px 0}
.section-title{font-size:20px;border-left:4px solid var(--green);padding-left:12px;margin:8px 0 14px}
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}
.cat-card{background:#fff;border:1px solid #e0ebe0;border-radius:var(--radius);padding:16px;text-align:center;transition:.15s}
.cat-card:hover{border-color:var(--green);box-shadow:0 2px 10px rgba(46,125,50,.12);text-decoration:none;transform:translateY(-2px)}
.cat-card h3{margin:0 0 4px;font-size:17px;color:var(--green-dark)}
.cat-card p{margin:0;font-size:13px;color:var(--ink-mute)}
.chip-box{display:flex;flex-wrap:wrap;gap:8px}
.chip-box a{background:#fff;border:1px solid #cfe3d2;border-radius:999px;padding:5px 14px;font-size:14px;color:var(--green-dark)}
.chip-box a:hover{background:var(--green-soft);text-decoration:none}
/* lists */
.article-list{list-style:none;padding:0;margin:0}
.plain-list{list-style:none;padding:0;margin:0}
.two-col{columns:2;column-gap:28px}
.article-list li,.plain-list li{margin:0 0 8px;break-inside:avoid}
.li-desc{display:block;font-size:12px;color:var(--ink-mute)}
/* article */
.breadcrumb{font-size:13px;color:var(--ink-mute);margin:18px 0}
.breadcrumb .sep{margin:0 6px}
.breadcrumb .cur{color:var(--ink)}
.article-detail{background:#fff;border:1px solid #e6efe6;border-radius:var(--radius);padding:26px 30px}
.article-detail h1{margin:0 0 10px}
.article-meta{margin-bottom:14px}
.tag{display:inline-block;background:var(--green-soft);color:var(--green-dark);padding:1px 10px;border-radius:10px;margin-right:6px;font-size:12px}
.article-summary{background:var(--bg-soft);border-radius:8px;padding:12px 16px;margin:0 0 18px;color:var(--ink-soft);font-size:15px}
.article-body{font-size:16px}
.article-body h2,.article-body h3{margin-top:24px}
.article-body img{max-width:100%;height:auto;border-radius:8px}
.article-imgs{display:flex;flex-wrap:wrap;gap:14px;margin:0 0 18px}
.article-imgs img{max-width:100%;border:1px solid #e0ebe0;border-radius:8px}
.article-body table{border-collapse:collapse;width:100%;margin:14px 0}
.article-body th,.article-body td{border:1px solid #d8e6da;padding:6px 10px;font-size:14px}
.article-body blockquote{border-left:4px solid var(--green);margin:14px 0;padding:4px 16px;color:var(--ink-soft);background:var(--bg-soft)}
.alias-tip{background:#fff8e1;border:1px solid #ffe082;border-radius:8px;padding:8px 14px;font-size:14px;margin:0 0 14px}
.volume-nav{background:var(--bg-soft);border-left:3px solid var(--green);border-radius:var(--radius);padding:16px;margin:20px 0}
.volume-nav h3{margin:0 0 10px;font-size:16px;color:var(--green-dark)}
.volume-nav ul{margin:0;padding-left:18px;columns:2;column-gap:20px}
.volume-nav li{margin:4px 0;font-size:14px;break-inside:avoid}
.related-box{background:var(--bg-soft);border-radius:var(--radius);padding:16px;margin:20px 0}
.related-box h3{margin:0 0 10px;font-size:16px;color:var(--green-dark)}
.related-box ul{margin:0;padding-left:18px;columns:2;column-gap:20px}
.related-box li{margin:4px 0;font-size:14px;break-inside:avoid}
/* pager */
.pager{display:flex;justify-content:center;gap:6px;margin:22px 0;flex-wrap:wrap}
.pager a{border:1px solid #cfe3d2;border-radius:6px;padding:4px 12px;font-size:14px}
.pager a.cur{background:var(--green-dark);color:#fff;border-color:var(--green-dark)}
.pager .dim{color:#bbb;padding:4px 8px}
/* footer */
.site-footer{margin-top:48px;background:var(--green-dark);color:#c8d4c9;padding:24px 0;font-size:13px}
.site-footer a{color:#e3ede5;text-decoration:none}
.site-footer a:hover{color:#fff;text-decoration:underline}
.footer-top{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.footer-brand{max-width:420px}
.footer-nav{display:flex;gap:14px;flex-wrap:wrap}
.footer-bottom{margin-top:16px;border-top:1px solid rgba(255,255,255,.15);padding-top:12px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.footer-bottom .sep{color:rgba(255,255,255,.35)}
/* search */
.search-form{display:flex;gap:8px;max-width:520px;margin:0 auto}
.search-form input{flex:1;padding:10px 14px;border:1px solid #cfe3d2;border-radius:8px;font-size:15px}
.search-form button{padding:10px 22px;border:none;background:var(--green-dark);color:#fff;border-radius:8px;font-size:15px;cursor:pointer}
.search-results{margin:22px auto;max-width:820px}
.search-group{background:#fff;border:1px solid #e6efe6;border-radius:10px;padding:14px 18px;margin:16px 0}
.search-group h3{font-size:16px;margin:0 0 6px;color:var(--green-dark)}
.search-group .g-count{font-size:12px;color:var(--ink-mute);font-weight:normal;margin-left:6px}
.search-group-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,1fr);gap:4px 20px}
.search-group-list li{line-height:1.5}
.search-group-list a{display:block;padding:5px 0;border-bottom:1px dashed #edf3ed;text-decoration:none}
.search-group-list a:hover{background:#f7fbf7}
.search-group-list .li-desc{display:block;font-size:12px;color:var(--ink-mute)}
mark{background:#fff3c4;color:#8a6d00;padding:0 2px;border-radius:2px}
.muted{color:var(--ink-mute);font-size:14px}
.btn{display:inline-block;background:var(--green-dark);color:#fff;padding:8px 20px;border-radius:8px}
.btn:hover{text-decoration:none;opacity:.9}
@media(max-width:720px){.two-col,.volume-nav ul,.related-box ul{columns:1}.search-group-list{grid-template-columns:1fr}.article-detail{padding:18px 16px}}