*,*::before,*::after{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;background:#fafafa;color:#1f2328;line-height:1.6}
img{max-width:100%;height:auto;display:block}
a{color:#0969da;text-decoration:none}a:hover{text-decoration:underline}
.container{max-width:1080px;margin:0 auto;padding:16px;width:100%}
.header{border-bottom:1px solid #d0d7de;background:#fff}
.header .container{display:flex;align-items:center;gap:20px;padding-top:10px;padding-bottom:10px}
.brand{font-size:1.2rem;font-weight:700;color:#1f2328}
.nav a{margin-right:14px;color:#444;font-size:.95rem}
.footer{border-top:1px solid #d0d7de;margin-top:40px;color:#656d76;font-size:.85rem}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.card{background:#fff;border:1px solid #d0d7de;border-radius:6px;overflow:hidden;display:flex;flex-direction:column}
.card-thumb{aspect-ratio:16/9;background:#000;overflow:hidden}
.card-thumb img{width:100%;height:100%;object-fit:cover}
.card-body{padding:12px;display:flex;flex-direction:column;flex-grow:1}
.card-title{font-size:.95rem;margin:0 0 8px;line-height:1.35}
.card-meta{font-size:.82rem;color:#656d76;margin-bottom:4px}
.card-evidence{font-size:.8rem;color:#0969da;margin-top:auto}
.card-desc{font-size:.88rem;color:#444}
.player-wrap{position:relative;aspect-ratio:16/9;width:100%;background:#000;border-radius:8px;overflow:hidden;cursor:pointer;margin:16px 0 24px}
.player-wrap iframe{width:100%;height:100%;border:0}
.player-wrap img{width:100%;height:100%;object-fit:cover}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:64px;height:44px;background:rgba(31,35,40,.85);border-radius:12px;display:flex;align-items:center;justify-content:center}
.play-btn::after{content:"";border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff}
.player-wrap:hover .play-btn{background:#e00}
.sec{margin:24px 0}.sec h2{font-size:1.12rem;border-bottom:1px solid #d0d7de;padding-bottom:6px}
blockquote{margin:16px 0;padding:8px 16px;border-left:4px solid #0969da;background:#f6f8fa}
blockquote .orig{display:block;margin-top:6px;font-size:.85rem;color:#656d76;font-style:normal}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
.tag{font-size:.8rem;background:#eef1f4;padding:2px 10px;border-radius:12px;color:#444}
.mention{border:1px solid #e1e4e8;border-radius:6px;padding:10px 14px;margin-bottom:8px;background:#fff}
.mention-meta{font-size:.8rem;color:#57606a;margin-bottom:4px}
.badge{text-transform:uppercase;font-size:.7rem;font-weight:700;padding:2px 6px;border-radius:4px;background:#ddf4ff;color:#0969da}
.related-list{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:10px}
.related-item{background:#fff;border:1px solid #d0d7de;border-radius:6px;padding:10px}
.count-bar,.desc{color:#57606a}
.topic-list{list-style:none;padding:0;columns:2;column-gap:32px}
.topic-list li{margin:6px 0;break-inside:avoid}
.area-top{margin-bottom:8px}
.route-list{display:flex;flex-direction:column;gap:14px}
.route-item{display:flex;gap:14px;background:#fff;border:1px solid #d0d7de;border-radius:6px;padding:12px}
.item-idx{font-size:1.3rem;font-weight:700;color:#0969da;min-width:28px}
.item-thumb img{width:160px;border-radius:4px}
.item-title{font-weight:600}
.item-meta{font-size:.82rem;color:#656d76}
.item-summary{font-size:.9rem;color:#333}
.hero{padding:26px 0 6px}.hero h1{margin:0 0 8px;font-size:1.9rem}.hero p{color:#444;max-width:720px}
details.en{margin:8px 0;color:#555}details.en summary{cursor:pointer;font-size:.9rem;color:#0969da}
.searchbox{width:100%;font-size:1.05rem;padding:10px 14px;border:1px solid #d0d7de;border-radius:8px}
@media (max-width:640px){.topic-list{columns:1}.route-item{flex-direction:column}.item-thumb img{width:100%}}