:root{--bg:#0f1419;--surface:#1a1f26;--accent:#1d9bf0;--text:#e7e9ea;--muted:#8b98a5;--border:#2f3640}
*{box-sizing:border-box}
html{font-size:17px}
body{margin:0;background:var(--bg);color:var(--text);font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;line-height:1.85}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:860px;margin:0 auto;padding:2.5rem 1.25rem 4rem}
header.site{border-bottom:1px solid var(--border);padding-bottom:1.25rem;margin-bottom:2rem}
header.site h1{margin:0;font-size:1.9rem;letter-spacing:.04em}
header.site p{margin:.3rem 0 0;color:var(--muted)}
.card{display:block;background:var(--surface);border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:10px;padding:1.25rem 1.4rem;margin:1rem 0;color:var(--text)}
.card:hover{border-color:var(--accent);text-decoration:none}
.card .id{font-family:ui-monospace,Menlo,monospace;color:var(--accent);font-size:.85rem}
.card h2{margin:.3rem 0 .4rem;font-size:1.2rem;line-height:1.5}
.meta{color:var(--muted);font-size:.9rem}
article h1{font-size:1.6rem;line-height:1.45;margin:.2rem 0 .6rem}
article h2{font-size:1.25rem;margin-top:2.4rem;padding-bottom:.3rem;border-bottom:1px solid var(--border)}
article h3{font-size:1.05rem;margin-top:1.6rem}
.abstract{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:1rem 1.3rem;margin:1.5rem 0}
.abstract h2{border:0;margin:0 0 .4rem;font-size:1rem;color:var(--accent)}
.katex-display{overflow-x:auto;overflow-y:hidden;padding:.4rem 0}
pre[class*=language-]{border-radius:10px;border:1px solid var(--border);font-size:.85rem;background:#11161c!important}
code{font-family:ui-monospace,Menlo,Consolas,monospace}
:not(pre)>code{background:var(--surface);padding:.1rem .35rem;border-radius:4px}
ol.refs{font-size:.92rem;color:var(--muted)}
footer{margin-top:3rem;padding-top:1rem;border-top:1px solid var(--border);color:var(--muted);font-size:.85rem}
@media(max-width:600px){html{font-size:15.5px}.wrap{padding:1.5rem 1rem 3rem}header.site h1{font-size:1.5rem}article h1{font-size:1.35rem}}