:root{--ink:#26241f;--ink2:#57534a;--shu:#b5432a;--paper:#f4f1e8;--card:#fffdf8;--line:#e0d9c7;--green:#3d7a52}
@media (prefers-color-scheme:dark){:root{--ink:#e7e2d5;--ink2:#a29c8e;--shu:#d15a3f;--paper:#161519;--card:#1f1e22;--line:#36333b;--green:#4f8d66}}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--paper);color:var(--ink);font:16px/1.85 "Hiragino Sans","PingFang SC","Microsoft YaHei",sans-serif}
a{color:inherit;text-decoration:none}
.wrap{max-width:720px;margin:0 auto;padding:0 18px 50px}
.top{display:flex;align-items:center;justify-content:space-between;padding:16px 0}
.brand{display:flex;align-items:center;gap:9px;font-weight:700}
.seal{width:32px;height:32px;border-radius:7px;background:var(--shu);color:#fff;display:grid;place-items:center;font-size:20px;font-family:serif}
.crumb{font-size:.8rem;color:var(--ink2);margin:6px 0 16px}
.crumb a{text-decoration:underline;text-underline-offset:3px}
.gcard{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:28px 24px}
.lv{display:inline-block;font-size:.75rem;padding:2px 10px;border-radius:99px;background:var(--shu);color:#fff;margin-bottom:10px}
h1.point{font-size:2rem;font-weight:700;line-height:1.3;font-family:"Hiragino Mincho ProN","Yu Mincho",serif}
.row{display:flex;gap:10px;margin-top:12px;font-size:.98rem;line-height:1.7}
.row b{flex:0 0 3.2em;color:var(--ink2);font-weight:600}
.meaning{font-size:1.15rem;font-weight:600}
.ex{margin-top:20px;padding-top:16px;border-top:1px dashed var(--line)}
.ex .jp{font-size:1.12rem;font-family:"Hiragino Mincho ProN","Yu Mincho",serif;line-height:2.1}
.ex .cn{color:var(--ink2);font-size:.95rem;margin-top:4px}
ruby rt{font-size:.5em;color:var(--ink2)}
.acts{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.btn{display:inline-block;padding:11px 22px;border-radius:11px;font-weight:600;font-size:.95rem}
.btn.shu{background:var(--shu);color:#fff}
.btn.shu:hover{background:#93341f}
.btn.ghost{border:1px solid var(--line);background:var(--card)}
.btn.ghost:hover{border-color:var(--shu);color:var(--shu)}
h2{font-size:1.05rem;margin:30px 0 12px}
.q{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin-bottom:12px}
.q .stem{font-family:"Hiragino Mincho ProN","Yu Mincho",serif;font-size:1.05rem;line-height:1.9}
.q ol{list-style:none;margin-top:8px;display:grid;gap:4px}
.q ol li{padding:4px 0;font-size:.95rem}
.q details{margin-top:8px;font-size:.92rem;color:var(--ink2)}
.q summary{cursor:pointer;color:var(--shu);font-weight:600}
.q .ans{margin-top:6px;color:var(--ink)}
.q .ans b{color:var(--green)}
.rel-list{display:flex;flex-wrap:wrap;gap:8px}
.rel-list a{background:var(--card);border:1px solid var(--line);border-radius:9px;padding:6px 12px;font-size:.9rem}
.rel-list a:hover{border-color:var(--shu);color:var(--shu)}
.idx-list{columns:1;margin-top:16px}
@media(min-width:600px){.idx-list{columns:2;column-gap:24px}}
.idx-list a{display:block;padding:6px 0;border-bottom:1px dashed var(--line);font-size:.95rem;break-inside:avoid}
.idx-list a:hover{color:var(--shu)}
.idx-list small{color:var(--ink2);display:block;font-size:.8rem}
h1.point .vs{font-size:.85rem;color:var(--ink2);font-family:sans-serif;font-weight:400;margin:0 .35em;vertical-align:middle}
.memory{display:inline-block;background:rgba(181,67,42,.09);border-radius:6px;padding:1px 9px;font-weight:600}
.ab{display:grid;gap:12px;margin-top:20px}
@media(min-width:600px){.ab{grid-template-columns:1fr 1fr}}
.side{border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.side h3{font-size:1.2rem;font-family:"Hiragino Mincho ProN","Yu Mincho",serif;line-height:1.4}
.side .row{margin-top:8px;font-size:.93rem}
.side .row b{flex:0 0 2.6em}
.side .ex{margin-top:12px;padding-top:10px}
.side .ex .jp{font-size:1.02rem;line-height:2}
.side .more{display:inline-block;margin-top:10px;font-size:.85rem;color:var(--shu);text-decoration:underline;text-underline-offset:3px}
.q .mode{display:inline-block;font-size:.72rem;color:var(--shu);border:1px solid var(--shu);border-radius:99px;padding:0 8px;margin-right:6px;font-family:sans-serif;vertical-align:middle}
.q .trap{margin-top:6px;color:var(--shu)}
footer{border-top:1px solid var(--line);margin-top:40px;padding:20px 0;text-align:center;font-size:.78rem;color:var(--ink2);line-height:2}
footer a{text-decoration:underline;text-underline-offset:3px}