:root{--bg:#f6f7f9;--card:#fff;--ink:#1d2330;--sub:#5b6475;--line:#dde1e8;--accent:#2a6fdb}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;display:flex;flex-direction:column;background:var(--bg);color:var(--ink);font-family:"Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif;line-height:1.65}
main{width:100%;max-width:980px;margin:0 auto;padding:28px 16px 56px;flex:1}
h1{font-size:1.7rem;margin:0 0 8px}
.lead{color:var(--sub);margin:0 0 20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:18px}
.controls{display:flex;flex-wrap:wrap;gap:16px 28px;align-items:center}
.tabs{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.tabs button{border:0;background:#fff;padding:8px 16px;font:inherit;cursor:pointer;color:var(--sub)}
.tabs button[aria-selected=true]{background:var(--accent);color:#fff}
.opts{display:flex;flex-wrap:wrap;gap:6px 18px;align-items:center}
.opts label{display:inline-flex;align-items:center;gap:6px;cursor:pointer}
.sw{width:12px;height:12px;border-radius:3px;display:inline-block}
.hint{font-size:.85rem;color:var(--sub)}
h2{font-size:1.1rem;margin:0 0 10px}
.legend{display:flex;flex-wrap:wrap;gap:6px 16px;font-size:.88rem;margin-bottom:6px}
svg{width:100%;height:auto;display:block}
svg text{font-family:inherit;fill:#5b6475;font-size:12px}
.tableWrap{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:.9rem;font-variant-numeric:tabular-nums}
th,td{border:1px solid var(--line);padding:6px 10px;text-align:right;white-space:nowrap}
th{background:#f0f2f6;text-align:center}
td:first-child,th:first-child{text-align:left}
.note ul{padding-left:1.2em;margin:6px 0}
.note li{margin-bottom:6px}
#tip{position:fixed;pointer-events:none;background:#1d2330;color:#fff;padding:8px 10px;border-radius:8px;font-size:.85rem;line-height:1.5;display:none;z-index:9;max-width:240px}
/* ===== 共用：導覽列與頁尾 ===== */
.site-header{background:#fff;border-bottom:1px solid var(--line)}
.bar{max-width:980px;margin:0 auto;padding:0 16px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:4px 20px}
.brand{font-weight:700;color:var(--ink);text-decoration:none;padding:14px 0}
.site-header nav{display:flex;flex-wrap:wrap}
.site-header nav a{padding:14px 14px;color:var(--sub);text-decoration:none;border-bottom:3px solid transparent}
.site-header nav a:hover{color:var(--ink)}
.site-header nav a[aria-current=page]{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}
.site-footer{background:#fff;border-top:1px solid var(--line);color:var(--sub);font-size:.9rem}
.site-footer .bar{padding:16px;gap:4px 28px;justify-content:flex-start}
.site-footer p{margin:0}
/* ===== 首頁、問答、關於 ===== */
.hero{padding:12px 0 8px}
.hero h1{font-size:2rem}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-bottom:18px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px}
.stat .num{font-size:2rem;font-weight:700;color:var(--accent);line-height:1.2}
.stat .cap{color:var(--sub);font-size:.9rem}
.links a.entry{display:block;text-decoration:none;color:inherit;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.links a.entry:hover{border-color:var(--accent)}
.links .entry b{display:block;color:var(--accent)}
.links .entry span{color:var(--sub);font-size:.9rem}
.soon{text-align:center;padding:48px 18px}
.soon .tag{display:inline-block;background:#eaf1fd;color:var(--accent);border-radius:999px;padding:2px 14px;font-size:.85rem;margin-bottom:10px}