:root{--bg:#f3f6fb;--card:#ffffff;--line:#e2eaf4;--ink:#1c2a3a;--ink2:#5b7186;--brand:#1d5fd1;--brand2:#2f7ff0;--accent:#0e9f8f;--soft:#e8f0fc;--radius:14px;--shadow:0 1px 2px rgba(20,50,90,.05),0 10px 26px -14px rgba(20,50,90,.2);--maxw:1040px;}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace}.site-head{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.93);backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid 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var(--line);border-radius:12px;box-shadow:var(--shadow);max-height:340px;overflow:auto;display:none;z-index:60;color:var(--ink)}.search-results.open{display:block}.sr-item{display:flex;align-items:center;gap:12px;padding:9px 14px;border-bottom:1px solid var(--line);cursor:pointer}.sr-item:last-child{border-bottom:none}.sr-item:hover{background:var(--soft)}.sr-item .w{font-size:16px;font-weight:700;min-width:72px;max-width:220px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--ink)}.sr-item .p{color:var(--brand);font-weight:600;font-size:13px;white-space:nowrap}.sr-item .d{color:var(--ink2);font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}.sr-empty{padding:14px;color:var(--ink2);font-size:14px;text-align:center}main{padding:26px 0 56px}.page-title{font-size:22px;margin:6px 0 4px}.page-sub{color:var(--ink2);font-size:14px;margin:0 0 20px}.crumb{font-size:13px;color:var(--ink2);margin:0 0 14px}.crumb a{color:var(--ink2)}.crumb 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6px;font-size:30px;letter-spacing:.5px}.term-en{color:var(--brand);font-size:18px;font-weight:700}.term-meta{color:var(--ink2);font-size:15px;margin-top:8px}.term-meta a{color:var(--brand);font-weight:600}.term-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.badge{display:inline-grid;place-items:center;height:28px;padding:0 12px;border-radius:999px;font-size:13px;font-weight:600;background:var(--soft);color:var(--brand);border:1px solid #c3d6f2}.badge:hover{text-decoration:none;background:#d7e5fa}.badge.plain{background:none;color:var(--ink2);border-style:dashed;font-weight:400}.badge.code{font-family:ui-monospace,Menlo,Consolas,monospace;letter-spacing:.5px}.section{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:16px}.section h2{font-size:16px;margin:0 0 12px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.section h2 .tag{font-size:12px;font-weight:600;color:var(--accent);background:#e6f7f4;border:1px 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h1{font-size:26px}}@media (max-width:640px){.hero{padding:26px 20px}.hero h1{font-size:25px}.wrap{padding:0 14px}.logo small{display:none}.logo{font-size:18px}.term-head{padding:20px 16px}.section{padding:16px}}