:root{--bg:#f6f7f9;--card:#fff;--ink:#1c2430;--mute:#5d6b7c;--line:#dfe4ea;--acc:#1f5fbf;--acc2:#0c8a6a;--warn:#b45309;--code:#0f172a}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 -apple-system,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Segoe UI,Roboto,sans-serif}
.top{position:sticky;top:0;z-index:20;display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;background:#0f2742;color:#fff;padding:9px 20px}
.top .author{font-weight:700;letter-spacing:.5px;background:#ffffff1c;padding:3px 10px;border-radius:6px;white-space:nowrap}
.top .site{font-size:17px;font-weight:600}
.top nav{display:flex;gap:4px;flex:1}
.top nav a{color:#cfe1f7;text-decoration:none;padding:5px 12px;border-radius:6px}
.top nav a.on,.top nav a:hover{background:#ffffff26;color:#fff}
.global-mode{font-size:14px;color:#cfe1f7}
.global-mode button,.modebar button{border:1px solid #9db6d4;background:transparent;color:inherit;padding:3px 12px;border-radius:6px;cursor:pointer;font-size:14px}
.global-mode button.on{background:#fff;color:#0f2742}
main{max-width:1060px;margin:0 auto;padding:22px 18px 50px}
h1{font-size:28px;margin:.3em 0 .4em}h1 small{font-size:15px;color:var(--mute);font-weight:400}
h2{font-size:21px;margin:1.6em 0 .6em;border-left:5px solid var(--acc);padding-left:10px}
h3{font-size:19px;margin:.2em 0}h4{font-size:16px;margin:.9em 0 .3em;color:#0f2742}h5{font-size:15px;margin:1em 0 .2em;color:var(--acc)}
.lead{color:#34414f;font-size:16.5px}
a{color:var(--acc)}
.btn{display:inline-block;background:var(--acc);color:#fff;padding:8px 16px;border-radius:8px;text-decoration:none}
.stat{display:flex;gap:14px;flex-wrap:wrap;margin:14px 0}.stat div{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:10px 18px;color:var(--mute)}.stat b{display:block;font-size:24px;color:var(--ink)}
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
.tile{display:block;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 14px;text-decoration:none;color:inherit}
.tile b{font-size:17px;display:block}.tile span{color:var(--mute);font-size:13px}.tile em{float:right;color:var(--acc);font-style:normal;font-size:13px}.tile p{margin:.4em 0 0;font-size:14px;color:#44505e}
.issue-row{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:6px 16px 10px;margin:12px 0}
.tablewrap{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:14.5px;margin:.4em 0}
th,td{border:1px solid var(--line);padding:6px 9px;text-align:left;vertical-align:top}th{background:#eef2f7}
table.idx td .ol{color:var(--mute);font-size:13.5px}.nw{white-space:nowrap}
.timeline .tl{display:flex;gap:14px;border-left:3px solid var(--acc);margin:0 0 10px 6px;padding-left:14px}.tld{font-weight:600;min-width:98px;color:var(--acc)}.tl ul{margin:0;padding-left:18px}
.chip{display:inline-block;font-size:12.5px;padding:1px 9px;border-radius:99px;background:#e8eef7;color:#1d3a63;text-decoration:none;margin:0 5px 3px 0;border:1px solid #c9d6e8}
.c-arch{background:#e6f1ff}.c-rl{background:#fff1e0}.c-agents{background:#e9f8ee}.c-multimodal{background:#f6e9fb}.c-world{background:#e3f6f6}.c-train{background:#fdeef0}.c-safety{background:#fff6cc}.c-infer{background:#ececff}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 20px 12px;margin:20px 0;box-shadow:0 1px 3px #0000000d}
.card .meta{font-size:13px;color:var(--mute);display:flex;gap:12px;flex-wrap:wrap}
.card .meta .issue-tag{color:var(--acc)}
.zhtitle{color:#34414f;margin-bottom:2px}.authors{font-size:13.5px;color:var(--mute)}
.links .lk{display:inline-block;font-size:13px;margin:4px 8px 4px 0;padding:2px 10px;border:1px solid var(--acc);border-radius:6px;text-decoration:none}
.oneliner{background:#eef7f1;border-left:4px solid var(--acc2);padding:8px 12px;margin:10px 0;border-radius:6px}
.modebar{margin:8px 0 2px;font-size:14px;color:var(--mute)}
.modebar button{border-color:#98a8bd;color:#334}.card.mode-plain .modebar [data-m=plain],.card.mode-pro .modebar [data-m=pro]{background:var(--acc);border-color:var(--acc);color:#fff}
.card.mode-plain .sec.pro{display:none}.card.mode-pro .sec.plain{display:none}
.sec{border-top:1px dashed var(--line);margin-top:6px}
.src{font-weight:400;font-size:12.5px;color:var(--mute);margin-left:6px}
.pc{display:grid;grid-template-columns:1fr 1fr;gap:14px}.pro-box{background:#effaf4;border-radius:8px;padding:2px 14px 6px}.con-box{background:#fff4ee;border-radius:8px;padding:2px 14px 6px}
@media(max-width:760px){.pc{grid-template-columns:1fr}.top .site{display:none}}
.ind{background:#f4f7fc;border-radius:8px;padding:2px 14px 6px;margin-top:10px}
.tbc{background:#fff8e6;border:1px solid #f1d8a0;border-radius:8px;padding:2px 14px 6px;margin-top:10px}.tbc .basis{color:var(--mute);font-size:13.5px}
.ver{font-size:12.5px;color:var(--mute);border-top:1px solid var(--line);margin-top:12px;padding-top:6px}
pre.code{background:var(--code);color:#e6edf6;padding:12px 14px;border-radius:8px;overflow-x:auto;font:13px/1.55 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
code{background:#eef1f5;padding:1px 5px;border-radius:4px;font:13.5px ui-monospace,Menlo,Consolas,monospace}pre code{background:none;padding:0}
blockquote{margin:.6em 0;padding:4px 14px;border-left:4px solid #c3cfdd;color:#45536a;background:#f3f6fa}
details.design{background:#fff;border:1px solid var(--line);border-radius:10px;padding:6px 16px;margin:12px 0}details.design summary{cursor:pointer;font-weight:600}
.katex-display{overflow-x:auto;overflow-y:hidden;padding:2px 0}
.pagefoot{text-align:center;color:var(--mute);font-size:13px;padding:20px}
.view{display:none}.viewhead{display:inline-block;background:var(--acc);color:#fff;padding:2px 12px;border-radius:6px;margin-bottom:6px}
.jump{margin:8px 0 14px}.catsec{margin-top:40px;border-top:3px solid var(--line);padding-top:10px}
@media print{.top{position:static}.card{break-inside:avoid-page}}