:root{--bg:#f6f7f9;--fg:#1f2430;--muted:#5f6b7a;--card:#fff;--line:#e3e6ea;--accent:#3867d6;--accent-bg:#eaf0fb;--chip:#eef0f3;--star:#d29b00;--code:#1f8a4c;--action:#1f8a4c;--action-hover:#187340;--action-fg:#fff;--warm:#d4661a;--venue:#7c4dce}
@media (prefers-color-scheme:dark){:root{--bg:#111418;--fg:#e4e8ee;--muted:#96a0ad;--card:#181c22;--line:#2a3039;--accent:#79a8ff;--accent-bg:#1a2638;--chip:#222831;--star:#e8b73a;--code:#5cc98a;--action:#2f9e5b;--action-hover:#38b068;--action-fg:#fff;--warm:#f0914e;--venue:#b495f2}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif}
html:not(.zh) [lang=zh]{display:none!important}
html.zh [lang=en]{display:none!important}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
.top{position:sticky;top:0;z-index:5;background:var(--bg);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:16px;min-height:56px;flex-wrap:wrap}
.brand{font-weight:700;color:var(--fg);white-space:nowrap}
nav{display:flex;gap:14px;flex-wrap:wrap;font-size:15px;flex:1}
nav a{color:var(--muted)}nav a:hover{color:var(--fg)}
.lang{border:1px solid var(--line);background:var(--card);color:var(--fg);border-radius:8px;padding:4px 10px;cursor:pointer;font:inherit;font-size:14px}
h1{font-size:clamp(26px,4vw,38px);line-height:1.2;margin:28px 0 10px}
h2{font-size:22px;margin:36px 0 12px}
.lead{font-size:18px;color:var(--muted);max-width:760px}
.muted{color:var(--muted);font-weight:400;font-size:.92em}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin:20px 0}
.stats div{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 14px;display:flex;flex-direction:column}
.stats b{font-size:22px}
.search{margin:24px 0}
#q{width:100%;font:inherit;font-size:17px;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--card);color:var(--fg)}
#q:focus{outline:2px solid var(--accent);outline-offset:1px}
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px;align-items:center}
.filters select{font:inherit;font-size:14px;padding:6px 8px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--fg);max-width:100%}
.filters input[type=search]{font:inherit;font-size:14px;padding:6px 8px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--fg);flex:1 1 200px;min-width:0}
.filters label{font-size:14px;display:flex;gap:6px;align-items:center}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
.tile{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px;color:var(--fg)}
.tile:hover{border-color:var(--accent);text-decoration:none}
.tile h3{margin:0 0 6px;font-size:17px}.tile p{margin:0 0 8px;color:var(--muted);font-size:14px}
.cards{display:grid;gap:12px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;min-width:0}
.card h3,.card h1{margin:4px 0 6px;font-size:17px;line-height:1.35;overflow-wrap:anywhere}
.card h1{font-size:22px}.cards.single{grid-template-columns:1fr}
.card .meta{font-size:13px;color:var(--muted)}
.card .take{margin:4px 0 8px}
.card .authors{margin:0 0 6px;font-size:14px;color:var(--muted)}
.card details{font-size:14px;margin-bottom:6px}.card summary{cursor:pointer;color:var(--muted)}
.links{font-size:14px;margin:4px 0}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.chip{font-size:12px;background:var(--chip);border-radius:999px;padding:2px 9px;color:var(--muted)}
.chip.topic{background:var(--accent-bg);color:var(--accent)}
.chip.emb{border:1px solid var(--line);background:transparent}
.badge{font-size:12px;border:1px solid var(--line);border-radius:6px;padding:1px 6px;margin-right:4px}
.badge.code{color:var(--code);border-color:var(--code)}
.star{color:var(--star)}
.gh{font-size:12px;color:var(--muted,#777);margin-left:4px;white-space:nowrap}
.more{font-weight:600}
.tlist{line-height:2}
.prose{max-width:780px}.prose li{margin:4px 0}
.foot{border-top:1px solid var(--line);margin-top:48px;padding:16px;color:var(--muted);font-size:14px}
mark{background:#ffe58a;color:inherit;border-radius:2px}
@media (prefers-color-scheme:dark){mark{background:#6b5a12}}
@media (max-width:600px){.top .wrap{gap:4px 16px;min-height:0;padding-top:8px}nav{order:3;flex:1 1 100%;gap:12px;font-size:14px;padding-bottom:8px}.lead{font-size:16px}}
.badge.new{color:var(--accent);border-color:var(--accent)}
.badge.venue{color:var(--venue);border-color:var(--venue)}
a.badge.venue{text-decoration:none}a.badge.venue:hover{text-decoration:underline}
.poplist{line-height:1.9;padding-left:1.6em}.poplist li{overflow-wrap:anywhere}
.card details.bib{margin:2px 0 6px}.card details.bib pre{font-size:12px;background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:8px;overflow-x:auto;white-space:pre;margin:6px 0}
.card button.copy{font:inherit;font-size:13px;padding:2px 10px;border:1px solid var(--line);border-radius:6px;background:var(--card);color:inherit;cursor:pointer}
ul.days{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:.4rem 1rem}
.pager{display:flex;justify-content:space-between;gap:1rem}
.badge.rise{color:var(--code);border-color:var(--code);font-weight:600}
.tlist.path{line-height:1.5;padding-left:1.4em}.tlist.path li{margin:.7em 0}.tlist.path .take{display:inline-block;margin:.2em 0 0;font-size:.93em;}.start-link{margin:.4em 0 0}
.pg-save{font:inherit;font-size:12px;line-height:1.4;border:1px solid var(--line);border-radius:6px;padding:1px 6px;background:var(--card);color:var(--muted);cursor:pointer}
.pg-save[aria-pressed=true]{color:var(--star);border-color:var(--star)}
#pg-now{margin:14px 0;padding:8px 14px;border-left:3px solid var(--accent);background:var(--card);border-radius:0 10px 10px 0;font-size:15px}#pg-now p{margin:4px 0}
.pg-local{margin:-4px 0 10px;font-size:13px;color:var(--accent)}
#pg-my{margin:14px 0;padding:12px 14px;border:1px solid var(--accent);border-radius:10px;background:var(--card)}
#pg-my summary{font-weight:600;cursor:pointer}
#pg-my h4{margin:14px 0 0;font-size:15px}#pg-my p{margin:2px 0 6px}#pg-my ul{margin:0;padding-left:18px;font-size:14px}
.pg-acts{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.pg-acts button{font:inherit;font-size:13px;padding:5px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--fg);cursor:pointer}
.nb-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px;margin:12px 0}
.nb-stat{padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--card)}
.nb-stat b{display:block;font-size:24px;line-height:1.2;font-variant-numeric:tabular-nums}.nb-stat span{font-size:13px}
.nb-list{list-style:none;margin:8px 0;padding:0;max-width:760px}
.nb-list li{display:grid;grid-template-columns:minmax(120px,15em) 1fr 6.5em;gap:10px;align-items:center;padding:3px 0;font-size:14px}
.nb-track{height:10px}.nb-bar{display:block;height:10px;min-width:2px;background:var(--accent);border-radius:0 4px 4px 0}
.nb-n{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
@media (max-width:520px){.nb-list li{grid-template-columns:1fr 6.5em}.nb-track{grid-row:2;grid-column:1/3}}
.repolist{list-style:none;margin:16px 0 0;padding:0}
.repolist li{padding:9px 2px;border-bottom:1px solid var(--line);overflow-wrap:anywhere}
.repolist .cr-n{font-weight:600}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.hsearch{flex:0 1 240px;min-width:140px}.hsearch[hidden]{display:none}
.hsearch input{width:100%;font:inherit;font-size:14px;padding:6px 10px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--fg)}
.hsearch input:focus{outline:2px solid var(--accent);outline-offset:1px}
.ghstar{display:inline-flex;align-items:center;gap:5px;border:1px solid var(--line);border-radius:8px;padding:4px 10px;background:var(--card);color:var(--fg);font-size:14px;white-space:nowrap}
.ghstar:hover{border-color:var(--star);text-decoration:none}.ghstar .s{color:var(--star)}
.ghstar .n{border-left:1px solid var(--line);padding-left:6px;margin-left:2px;color:var(--muted);font-variant-numeric:tabular-nums}
.ghstar.big{font-size:15px;padding:7px 14px;font-weight:600}
.trend{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px;margin:18px 0 8px}
.tcol{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:4px 16px 8px;min-width:0}
.tcol h2{font-size:18px;margin:12px 0 4px}.tcol>p.muted{font-size:13px;margin:0 0 6px}
.tcol .poplist{line-height:1.45;padding-left:1.4em;margin:6px 0}.tcol .poplist li{margin:0 0 8px;font-size:14px}
.tcol .poplist li>.muted{display:block}
.starbox{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;justify-content:space-between;background:var(--accent-bg);border-radius:12px;padding:10px 16px;margin:12px 0}
.starbox p{margin:0;font-size:15px}
@media (max-width:600px){.top{position:static}.hsearch{order:4;flex:1 1 100%;padding-bottom:8px}.ghstar{margin-left:auto}}
.tcol .more{font-size:14px}
/* run 62b: compact header (about 0.6x), scrollable trending boxes, badges never split */
.top .wrap{min-height:34px;gap:12px;padding-top:3px;padding-bottom:3px}
.top .brand{font-size:15px}.top nav{font-size:14px}
.hsearch input{padding:3px 9px;font-size:13px}
.ghstar{padding:2px 8px;font-size:13px}.ghstar.big{padding:7px 14px;font-size:15px}
.top .lang{padding:2px 8px;font-size:13px}
.badge,.gh{white-space:nowrap;display:inline-block}
.tcol h2{font-size:17px;margin:10px 0 2px}.tcol>p.muted{font-size:12.5px;margin:0 0 4px;line-height:1.4}
.tcol .poplist{max-height:170px;overflow-y:auto;overscroll-behavior:contain;padding-right:6px;scrollbar-width:thin}
.tcol .poplist li{font-size:13.5px;margin:0 0 7px}
.tcol .more{font-size:13px}.tcol>p:last-child{margin:6px 0 4px}
@media (max-width:600px){.top .wrap{min-height:0;padding-top:6px;gap:4px 12px}}
.tcol{padding:2px 14px 6px}.tcol h2{margin:8px 0 2px}.tcol>p.muted{display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.nw{white-space:nowrap}
/* secondary text in the trending boxes: smaller than the entries themselves */
.tcol>p.muted{font-size:11.5px;line-height:1.35;margin:0 0 6px;opacity:.85}
.tcol .poplist li>.muted{font-size:12px;line-height:1.35}
.tcol .poplist .gh,.tcol .poplist .badge{font-size:11px}
.tcol>p:last-child .more{font-size:12.5px;font-weight:600}
.starbar{background:var(--accent-bg);border-top:1px solid var(--line)}
.starbar .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;min-height:0;padding-top:5px;padding-bottom:5px}
.starbar p{margin:0;flex:1 1 300px;font-size:13.5px}
.sb-x{font:inherit;font-size:12.5px;border:0;background:transparent;color:var(--muted);cursor:pointer;padding:2px 4px}
.sb-x:hover{color:var(--fg)}
html.nostar .starbar{display:none}
.sec-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 16px;margin:32px 0 12px}
.sec-head h2{margin:0}
.quick{display:flex;flex-wrap:wrap;gap:8px;margin-left:auto}
.qbtn{border:1px solid var(--accent);border-radius:8px;padding:5px 12px;font-size:13.5px;font-weight:600;white-space:nowrap;background:var(--card)}
.qbtn:hover{background:var(--accent-bg);text-decoration:none}
@media (max-width:600px){.quick{margin-left:0}.qbtn{white-space:normal}}
.toprow{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 16px;margin:10px 0 0}
.toprow .start-link{margin:0;flex:1 1 320px}
.stats.mini{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 0 auto}
.stats.mini div{flex-direction:row;align-items:baseline;gap:6px;padding:4px 10px;border-radius:8px;font-size:12.5px;color:var(--muted)}
.stats.mini b{font-size:15px;color:var(--fg)}
.toprow+.trend{margin-top:12px}
@media (max-width:600px){.stats.mini{margin-left:0}}
/* GitHub-style star button (header) */
.ghb{display:inline-flex;align-items:stretch;font:600 12px/20px -apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;white-space:nowrap}
.ghb a{display:inline-flex;align-items:center;gap:5px;padding:2px 10px;border:1px solid #d0d7de;color:#24292f;text-decoration:none}
.ghb-btn{border-radius:6px;background:linear-gradient(#f6f8fa,#ebf0f4)}
.ghb-btn:hover{background:linear-gradient(#f3f4f6,#e5eaee);text-decoration:none}
.ghb-n{border-left:0!important;border-radius:0 6px 6px 0;background:#fff;font-weight:600}
.ghb-n:hover{color:#0969da!important;text-decoration:none}
.ghb-btn:not(:last-child){border-radius:6px 0 0 6px}
@media (prefers-color-scheme:dark){.ghb a{border-color:#3d444d;color:#f0f6fc}.ghb-btn{background:linear-gradient(#2a313c,#212830)}.ghb-btn:hover{background:#30363d}.ghb-n{background:#151b23}.ghb-n:hover{color:#4493f8!important}}
@media (max-width:600px){.ghb{margin-left:auto}}
.ghb-star{color:var(--star);margin-right:-1px}
nav a{border:1px solid transparent;border-radius:6px;padding:1px 7px;margin:0 -4px}
nav a.on{color:var(--fg);border-color:var(--accent);background:var(--accent-bg);font-weight:600}
nav a.on:hover{text-decoration:none}
.rate{color:var(--star);letter-spacing:-1px;white-space:nowrap;font-size:13px}
.rate.r3{font-weight:700}
.rate-h{font-size:16px;margin:22px 0 10px}.rate-h.r3{color:var(--star)}
.pack{font-size:12.5px;font-weight:600;border:1px solid var(--line);border-radius:6px;padding:2px 9px;margin-left:8px;vertical-align:middle;white-space:nowrap;background:var(--card)}
.pack:hover{border-color:var(--accent);text-decoration:none}
/* colour system: blue = navigation/links, green = actions (download) and code, gold = ratings, gray = GitHub counts,
   orange = Hugging Face, purple = venues; each topic has its own hue (--tc) on tiles and chips */
.t-vla{--tc:#6366f1}.t-manipulation{--tc:#0ea5e9}.t-tactile{--tc:#ec4899}.t-locomotion{--tc:#f97316}
.t-world-models{--tc:#a855f7}.t-navigation{--tc:#14b8a6}.t-perception{--tc:#84cc16}.t-control{--tc:#64748b}
.t-learning{--tc:#ef4444}.t-sim{--tc:#22b8cf}.t-datasets{--tc:#b7791f}.t-hardware{--tc:#8d7b6a}
.tile[class*=" t-"]{border-top:3px solid var(--tc)}
.chip.topic[class*=" t-"]{color:var(--tc);background:color-mix(in srgb,var(--tc) 13%,transparent)}
@media (prefers-color-scheme:dark){.chip.topic[class*=" t-"]{color:color-mix(in srgb,var(--tc) 70%,#fff);background:color-mix(in srgb,var(--tc) 20%,transparent)}}
.tcol{border-top:3px solid var(--line)}
.tcol.k-hf{border-top-color:var(--warm)}.tcol.k-hf h2::before{content:"▲ ";color:var(--warm);font-size:.8em}
.tcol.k-rise{border-top-color:var(--code)}.tcol.k-rise h2::before{content:"↗ ";color:var(--code)}
.tcol.k-pop{border-top-color:var(--star)}.tcol.k-pop h2::before{content:"★ ";color:var(--star)}
.tcol.k-hf .badge.rise{color:var(--warm);border-color:var(--warm)}
.pack{background:var(--action);border-color:var(--action);color:var(--action-fg)!important;font-weight:600}
.pack:hover{background:var(--action-hover);border-color:var(--action-hover)}
.qbtn{border-color:color-mix(in srgb,var(--accent) 55%,transparent)}
.starbar{background:color-mix(in srgb,var(--star) 12%,var(--bg))}
#starbar-go{border-color:var(--star)}
/* visual polish (run 62) */
body{-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
.card{transition:border-color .15s,box-shadow .15s}
.card:hover{border-color:color-mix(in srgb,var(--accent) 40%,var(--line));box-shadow:0 2px 10px rgba(15,23,42,.06)}
@media (prefers-color-scheme:dark){.card:hover{box-shadow:0 2px 12px rgba(0,0,0,.35)}}
.card h3 a,.card h1 a{color:var(--fg)}.card h3 a:hover,.card h1 a:hover{color:var(--accent);text-decoration:none}
.card .take{line-height:1.6}
.chip:not(.topic):not(.emb){background:transparent;border:1px solid var(--line);font-size:11.5px;padding:1px 8px}
.chip.emb{font-size:11.5px}
main>h2,#home-static>h2,.sec-head h2{position:relative;padding-left:12px}
main>h2::before,#home-static>h2::before,.sec-head h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:var(--accent)}
.tcol .poplist{-webkit-mask-image:linear-gradient(to bottom,#000 82%,transparent);mask-image:linear-gradient(to bottom,#000 82%,transparent)}
.tcol .poplist:hover{-webkit-mask-image:none;mask-image:none}
.quick.start{margin:14px 0 0}
blockquote.intro{margin:16px 0;padding:10px 16px;border-left:4px solid var(--accent);background:var(--card);border-radius:0 10px 10px 0}
blockquote.intro p{margin:8px 0}
.prose,main>p,main>ul{line-height:1.7}
.tlist{line-height:1.6}.tlist li{margin:8px 0}
.authors{overflow-wrap:anywhere}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
@media (max-width:600px){
  .top nav{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;gap:10px}
  .top nav::-webkit-scrollbar{display:none}
  .top nav a{flex:0 0 auto}
  .card{padding:12px 13px}
}