:root{
  --ink:#1a1d24; --ink-2:#3b4252; --muted:#6b7280; --paper:#fbfaf7; --line:#e5e1d8;
  --accent:#2f5d7c; --accent-2:#a04030;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;background:var(--paper);color:var(--ink);line-height:1.75;font-size:16px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1080px;margin:0 auto;padding:24px 20px 80px}
.muted{color:var(--muted);font-size:.9em}

/* 顶栏 */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.header-inner{max-width:1080px;margin:0 auto;padding:10px 20px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--ink);font-size:1.05em}
.brand:hover{text-decoration:none}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;background:var(--accent);color:#fff;border-radius:6px;font-weight:800}
.brand-name{white-space:nowrap}
.search-box{flex:1;min-width:200px;max-width:420px;display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:#fff}
.search-box input{flex:1;border:0;outline:0;padding:8px 10px;font-size:.95em;background:transparent}
.search-box button{border:0;background:var(--accent);color:#fff;padding:0 14px;cursor:pointer;font-size:1.1em}
.era-nav{display:flex;gap:4px;flex-wrap:wrap}
.era-link{font-size:.78em;padding:3px 8px;border-radius:5px;background:color-mix(in srgb,var(--c,#555) 12%,transparent);color:var(--c,#555);white-space:nowrap}
.era-link:hover{text-decoration:none;background:color-mix(in srgb,var(--c,#555) 22%,transparent)}

/* 首页 hero */
.hero{text-align:center;padding:48px 0 32px}
.hero-title{font-size:2.4em;margin:0 0 8px;letter-spacing:.02em}
.hero-sub{color:var(--ink-2);margin:0 0 24px;font-size:1.05em}
.hero-search{max-width:620px;margin:0 auto 28px;display:flex;gap:8px}
.hero-search input{flex:1;padding:14px 16px;border:1px solid var(--line);border-radius:10px;font-size:1em;outline:none}
.hero-search input:focus{border-color:var(--accent)}
.hero-search button{padding:0 22px;border:0;background:var(--accent);color:#fff;border-radius:10px;cursor:pointer;font-size:1em}
.hero-stats{display:flex;justify-content:center;gap:40px;flex-wrap:wrap}
.hero-stats div{display:flex;flex-direction:column}
.hero-stats b{font-size:1.8em;color:var(--accent)}
.hero-stats span{color:var(--muted);font-size:.85em}

/* 时代块 */
.era-blocks{margin-top:8px}
.era-block{margin:36px 0 8px}
.era-title{display:flex;align-items:center;gap:10px;font-size:1.3em;border-bottom:2px solid var(--line);padding-bottom:8px;margin:0 0 16px}
.era-dot{width:10px;height:10px;border-radius:50%;background:var(--c)}
.era-title{color:var(--c)}
.era-count{margin-left:auto;font-size:.6em;background:color-mix(in srgb,var(--c) 14%,transparent);color:var(--c);padding:2px 8px;border-radius:10px;font-weight:600}

/* 数学家卡片网格 */
.m-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:10px}
.m-card{display:flex;flex-direction:column;gap:2px;padding:12px 14px;background:#fff;border:1px solid var(--line);border-radius:9px;border-left:3px solid var(--c);transition:transform .12s,box-shadow .12s;color:var(--ink)}
.m-card:hover{transform:translateY(-2px);box-shadow:0 4px 14px rgba(0,0,0,.08);text-decoration:none}
.m-name{font-weight:700;font-size:1.02em}
.m-sub{color:var(--muted);font-size:.78em}
.m-fields{color:var(--ink-2);font-size:.8em;line-height:1.4}

/* 详情页 */
.breadcrumb{font-size:.85em;color:var(--muted);margin-bottom:16px}
.breadcrumb a{color:var(--muted)}
.person-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:32px 36px;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.person-head{border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:8px}
.person-head h1{margin:0 0 12px;font-size:1.9em}
.person-meta{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:6px 24px;font-size:.92em;color:var(--ink-2)}
.meta-label{display:inline-block;width:96px;color:var(--muted)}
.field-tags{margin-top:14px;display:flex;flex-wrap:wrap;gap:6px}
.tag{font-size:.78em;padding:3px 10px;border-radius:12px;background:color-mix(in srgb,var(--c) 12%,transparent);color:var(--c)}
.person-section{margin-top:22px}
.person-section h2{font-size:1.1em;color:var(--accent);border-left:3px solid var(--accent);padding-left:10px;margin:0 0 8px}
.person-section ul{padding-left:20px}
.person-section li{margin:5px 0}
.ach-list li{margin:7px 0}
.deep-entry{display:block;margin:14px 0;padding:11px 16px;background:linear-gradient(90deg,#f3efe6,#eef4f7);border:1px solid var(--line);border-radius:9px;color:var(--accent);font-size:.92em;font-weight:600}
.deep-entry:hover{text-decoration:none;border-color:var(--accent)}

/* 搜索页 */
.page-title{font-size:1.6em;margin:8px 0 16px}
.search-big{display:flex;flex-direction:column;gap:6px;margin-bottom:24px}
.search-big input{padding:14px 16px;border:1px solid var(--line);border-radius:10px;font-size:1.1em;outline:none}
.search-big input:focus{border-color:var(--accent)}
.search-hint{color:var(--muted);font-size:.85em}
.search-count{color:var(--muted);margin-bottom:12px}
.search-empty{color:var(--muted);padding:20px;background:#fff;border:1px dashed var(--line);border-radius:9px}
.result-list{display:flex;flex-direction:column;gap:10px}
.result-item{display:block;background:#fff;border:1px solid var(--line);border-radius:9px;padding:14px 18px;color:var(--ink)}
.result-item:hover{border-color:var(--accent);text-decoration:none}
.r-head{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.r-name{font-weight:700;font-size:1.1em;color:var(--accent)}
.r-sub{color:var(--muted);font-size:.85em}
.r-era{margin-left:auto;color:var(--muted);font-size:.78em}
.r-fields{font-size:.82em;color:var(--ink-2);margin:3px 0}
.r-snip{font-size:.9em;color:var(--ink-2);line-height:1.6}
mark{background:#fff3a8;padding:0 2px;border-radius:2px}

/* 页脚 */
.site-footer{border-top:1px solid var(--line);background:#fff;margin-top:40px}
.footer-inner{max-width:1080px;margin:0 auto;padding:20px;text-align:center;color:var(--muted);font-size:.85em}
.footer-inner p{margin:4px 0}

@media(max-width:600px){
  .hero-title{font-size:1.7em}
  .person-card{padding:20px 18px}
  .meta-label{width:80px}
  .era-link{font-size:.72em}
}