:root{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.6;color-scheme:light dark;--bg: #16181d;--panel: #1f232b;--border: #2e3440;--border-strong: #3a4150;--text: #e6e9ef;--muted: #9aa3b2;--accent: #6ea8fe;--btn: #2563eb;--btn-hover: #1d4ed8;--error: #e5717a;--warn: #fab219;--ok: #3fb950;--cat-ai: #3987e5;--cat-lg: #008300;--cat-cl: #d55181;--radius: 12px;--radius-sm: 7px;--shadow: 0 1px 3px rgb(0 0 0 / .35);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}@media (prefers-color-scheme: light){:root{--bg: #f6f7f9;--panel: #ffffff;--border: #dde1e7;--border-strong: #c7cdd6;--text: #1c2430;--muted: #5b6572;--accent: #2563eb;--error: #b3313c;--warn: #8a5a00;--ok: #1a7f37;--cat-ai: #2a78d6;--shadow: 0 1px 2px rgb(16 24 40 / .06)}}*{box-sizing:border-box}body{margin:0}@font-face{font-family:Outfit;font-style:normal;font-weight:400 700;font-display:swap;src:url(/fonts/outfit-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}h1,h2,h3{font-family:Outfit,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;text-wrap:balance}p{text-wrap:pretty}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}main{max-width:1400px;margin:0 auto;padding:1.5rem 1.5rem 4rem}.narrow,.narrow-result,.searchbar{max-width:860px;margin-inline:auto}.workspace{display:grid;gap:1.5rem;grid-template-columns:minmax(0,1fr);align-items:start;margin-top:.5rem}.workspace:not(.split) .ws-main{max-width:860px;margin-inline:auto;width:100%}@media (min-width: 1100px){.workspace.split{grid-template-columns:minmax(0,1fr) minmax(400px,44%)}.ws-side{position:sticky;top:1.25rem}}.two-col{display:grid;gap:1rem;grid-template-columns:1fr;margin-bottom:1rem}.two-col .card{margin-bottom:0}@media (min-width: 720px){.two-col{grid-template-columns:1fr 1fr}}.topbar{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;padding-bottom:1rem;margin-bottom:1.75rem;border-bottom:1px solid var(--border)}.topbar h1{margin:0;font-size:1.05rem;font-weight:650;letter-spacing:-.01em}.topbar h1 a{color:var(--text);text-decoration:none}.topbar nav{display:flex;gap:1.1rem;align-items:baseline;font-size:.9rem}.topbar .corpus{color:var(--muted);font-variant-numeric:tabular-nums}.topbar-context{flex:1;min-width:0;padding:0 1.25rem;text-align:center;color:var(--muted);font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.topbar nav a{color:var(--accent);text-decoration:none}.topbar nav a:hover{text-decoration:underline}.hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:1.5rem 3rem;align-items:start;max-width:860px;margin:2.5rem auto 2rem}.hero h2{margin:0;font-size:2rem;line-height:1.18;font-weight:700;letter-spacing:-.02em}.hero-sub{margin:.7rem 0 0;color:var(--muted);font-size:1rem;line-height:1.6}.hero-points{list-style:none;margin:.3rem 0 0;padding:0;display:flex;flex-direction:column;gap:.6rem}.hero-points li{position:relative;padding-left:1.4rem;font-size:.95rem;line-height:1.45}.hero-points li:before{content:"";position:absolute;left:.2rem;top:.58em;width:6px;height:6px;border-radius:50%;background:var(--accent)}@media (max-width: 720px){.hero{grid-template-columns:1fr;gap:1.1rem;margin-top:2rem}}.section-label{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;margin:0 0 .6rem;font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}.kbd-hint{font-weight:400;text-transform:none;letter-spacing:normal}kbd{font-family:inherit;font-size:.85em;padding:0 .4em;border:1px solid var(--border-strong);border-bottom-width:2px;border-radius:4px;background:var(--panel)}.examples{margin-top:1.75rem}.examples ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.5rem}.examples button{width:100%;text-align:left;font:inherit;font-size:.95rem;line-height:1.45;color:var(--text);background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-sm);padding:.6rem .9rem;cursor:pointer;transition:border-color .15s ease}.examples button:hover{border-color:var(--accent)}.how{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem;margin-top:2.25rem;padding-top:1.5rem;border-top:1px solid var(--border);counter-reset:step}.how h3{display:flex;align-items:center;gap:.5rem;margin:0 0 .35rem;font-size:.95rem;font-weight:600}.how h3:before{counter-increment:step;content:counter(step);flex:none;display:inline-flex;align-items:center;justify-content:center;width:1.35rem;height:1.35rem;border:1px solid var(--border-strong);border-radius:50%;font-size:.72rem;color:var(--muted)}.how p{margin:0;font-size:.875rem;line-height:1.5;color:var(--muted)}@media (max-width: 560px){.how{grid-template-columns:1fr}}footer{margin-top:2.5rem;padding-top:1rem;border-top:1px solid var(--border);color:var(--muted);font-size:.85rem}.mode{display:flex;width:fit-content;margin:0 auto .9rem;gap:.25rem;padding:.2rem;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-sm)}.mode button{font:inherit;font-size:.875rem;font-weight:600;color:var(--muted);background:none;border:none;border-radius:5px;padding:.3rem .9rem;cursor:pointer;transition:color .15s ease,background-color .15s ease}.mode button:hover{color:var(--text)}.mode button.active{color:var(--text);background:var(--bg)}.ask{display:flex;gap:.5rem;margin-bottom:1.25rem}.ask input{flex:1;min-width:0;padding:.7rem 1rem;font:inherit;color:var(--text);background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-sm);transition:border-color .15s ease}.ask input::placeholder{color:var(--muted)}.ask input:hover:not(:disabled){border-color:var(--border-strong)}.ask input:focus,.ask input:focus-visible{outline:2px solid var(--accent);outline-offset:-1px}.ask button{padding:.7rem 1.4rem;font:inherit;font-weight:600;color:#fff;background:var(--btn);border:none;border-radius:var(--radius-sm);cursor:pointer;transition:background-color .15s ease}.ask button:hover:not(:disabled){background:var(--btn-hover)}.ask button:disabled{opacity:.55;cursor:default}@media (max-width: 480px){.ask{flex-direction:column}}.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:1.1rem 1.35rem;margin-bottom:1rem;box-shadow:var(--shadow);animation:rise .2s ease-out}@keyframes rise{0%{opacity:0;transform:translateY(4px)}}.card>h2{font-size:1rem;margin:0 0 .5rem}.progress-head{display:flex;align-items:center;gap:.6rem}.progress-title{font-weight:600}.elapsed{margin-left:auto;color:var(--muted);font-size:.85rem;font-variant-numeric:tabular-nums}.spinner{flex:none;width:14px;height:14px;border:2px solid var(--border-strong);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.progress ol{list-style:none;margin:.75rem 0 0;padding:0}.progress li{display:flex;gap:.65rem;align-items:baseline;padding:.35rem 0;border-bottom:1px solid var(--border);font-size:.925rem}.progress li:last-child{border-bottom:none}.step-check{color:var(--ok);font-weight:700}.step-name{min-width:4.5rem;font-weight:600}.step-summary{color:var(--muted)}.stages{list-style:none;margin:.85rem 0 0;padding:0}.stages li{display:flex;gap:.65rem;padding:.4rem 0;align-items:flex-start}.stages li.pending{opacity:.45}.stage-icon{flex:none;width:1.1rem;display:inline-flex;justify-content:center;padding-top:.25rem}.stage-icon .spinner{width:12px;height:12px}.stage-dot{width:8px;height:8px;margin-top:2px;border:1.5px solid var(--border-strong);border-radius:50%}.stage-body{min-width:0}.stage-label{font-weight:600;margin-right:.6rem}.stage-detail{color:var(--muted);font-size:.875rem}.dir-chips{display:flex;flex-wrap:wrap;gap:.35rem;margin-top:.35rem}.chip{font-size:.75rem;font-weight:600;border:1px solid var(--border-strong);border-radius:999px;padding:.05rem .6rem;animation:rise .2s ease-out}.card.error{border-left:3px solid var(--error)}.error-title{margin:0 0 .15rem;font-weight:600;color:var(--error)}.card.error p{margin:.25rem 0}.retry{margin-top:.6rem;font:inherit;font-size:.875rem;font-weight:600;color:var(--text);background:none;border:1px solid var(--border-strong);border-radius:var(--radius-sm);padding:.35rem .9rem;cursor:pointer;transition:border-color .15s ease,color .15s ease}.retry:hover{border-color:var(--accent);color:var(--accent)}.demo-banner{border-left:3px solid var(--warn)}.demo-banner p{margin:.25rem 0}.demo-banner .asked{color:var(--muted);font-size:.85rem}.brief .meta{display:flex;gap:.6rem;align-items:center;float:right;margin-left:1rem}.partial-note{color:var(--muted);font-size:.875rem}.badge{font-size:.75rem;font-weight:600;color:var(--accent);border:1px solid var(--accent);border-radius:999px;padding:.05rem .55rem;white-space:nowrap}.badge.warn{color:var(--warn);border-color:var(--warn)}.brief h1,.brief h2,.brief h3{font-size:1.05rem;margin:1.1rem 0 .4rem}.brief p{margin:.7rem 0}.brief>:last-child{margin-bottom:0}.brief ul,.brief ol{padding-left:1.4rem}.brief li{margin:.25rem 0}.brief a,.open-problems a,.reading-reason a,.direction-problem a{color:var(--accent)}@keyframes cite-flash{0%,35%{background-color:color-mix(in srgb,var(--accent) 20%,transparent)}to{background-color:transparent}}.cite-flash{animation:cite-flash 3.5s ease-out;border-radius:6px}.brief code{font-size:.875em;background:var(--bg);padding:.1em .35em;border-radius:4px}.papers h2{display:flex;align-items:baseline;gap:.5rem;font-size:1rem;margin:0 0 .35rem}.count{font-size:.8rem;font-weight:600;color:var(--muted);background:var(--bg);border-radius:999px;padding:.05rem .5rem}.papers ul{list-style:none;margin:0;padding:0}.papers li{display:flex;gap:.9rem;align-items:center;padding:.55rem 0;border-bottom:1px solid var(--border)}.papers li:last-child{border-bottom:none}.paper-main{flex:1;min-width:0}.paper-title{display:block;color:var(--text);text-decoration:none;font-size:.95rem;line-height:1.4}.paper-title:hover{color:var(--accent);text-decoration:underline}.paper-meta{display:flex;gap:.7rem;align-items:center;margin-top:.1rem;font-size:.8rem;color:var(--muted)}.cat{display:inline-flex;align-items:center;gap:.35rem}.cat:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--muted)}.cat[data-cat="cs.AI"]:before{background:var(--cat-ai)}.cat[data-cat="cs.LG"]:before{background:var(--cat-lg)}.cat[data-cat="cs.CL"]:before{background:var(--cat-cl)}.paper-id{font-variant-numeric:tabular-nums}.explore{font-size:.75rem;font-weight:600;color:var(--accent);background:none;border:1px solid var(--border);border-radius:6px;padding:.2rem .6rem;cursor:pointer;white-space:nowrap;transition:border-color .15s ease}.explore:hover,.explore.active{border-color:var(--accent)}.landscape-sub{font-size:.95rem;margin:1.1rem 0 .35rem}.key-ideas,.open-problems{margin:0;padding-left:1.3rem}.key-ideas li,.open-problems li{margin:.3rem 0}.timeline{margin:.75rem 0 1rem}.timeline svg{display:block;width:100%;height:auto}.timeline .tick{fill:var(--muted);font-size:11px}.tabs{display:flex;flex-wrap:wrap;gap:.4rem;margin:.25rem 0 .85rem}.tab{display:inline-flex;align-items:center;gap:.45rem;font:inherit;font-size:.85rem;font-weight:600;color:var(--muted);background:none;border:1px solid var(--border);border-radius:999px;padding:.3rem .85rem;cursor:pointer;transition:color .15s ease,border-color .15s ease}.tab:hover{color:var(--text);border-color:var(--border-strong)}.tab.active{color:var(--text);border-color:var(--accent);background:var(--bg)}.tab .count{padding:0 .4rem}.map-card .legend{flex-wrap:wrap;row-gap:.3rem}.map-detail{display:flex;gap:.6rem;align-items:flex-start;margin-top:.6rem}.map-detail .swatch{flex:none;margin-top:.35rem}.map-detail-main{min-width:0}.map-detail-main a{color:var(--text);font-weight:600;font-size:.925rem;text-decoration:none}.map-detail-main a:hover{color:var(--accent);text-decoration:underline}.map-detail-meta{display:block;color:var(--muted);font-size:.8rem}.directions{list-style:none;margin:.25rem 0 0;padding:0}.direction{padding:.9rem 0;border-top:1px solid var(--border)}.direction:first-child{border-top:none;padding-top:.35rem}.direction-head{display:flex;align-items:center;gap:.5rem}.direction-name{flex:1;min-width:0;margin:0;font-size:.95rem;font-weight:650}.view-papers{font:inherit;font-size:.8rem;font-weight:600;color:var(--accent);background:none;border:1px solid var(--border);border-radius:6px;padding:.25rem .7rem;cursor:pointer;transition:border-color .15s ease}.view-papers:hover,.view-papers[aria-expanded=true]{border-color:var(--accent)}.direction-problem{margin:.45rem 0 .6rem;color:var(--muted);font-size:.9rem}.direction-papers{list-style:none;margin:0;padding:0}.direction-papers li{display:flex;gap:.7rem;align-items:baseline;padding:.25rem 0;font-size:.9rem}.direction-papers a{flex:1;min-width:0;color:var(--text);text-decoration:none}.direction-papers a:hover{color:var(--accent);text-decoration:underline}.paper-month{color:var(--muted);font-size:.8rem;font-variant-numeric:tabular-nums;white-space:nowrap}.reading-order{margin:0;padding-left:1.3rem}.reading-order li{margin:.55rem 0}.reading-order a{color:var(--text);font-weight:600;text-decoration:none}.reading-order a:hover{color:var(--accent);text-decoration:underline}.reading-reason{display:block;color:var(--muted);font-size:.875rem}.graph h2{font-size:1rem;margin:.25rem 0}.hint{color:var(--muted);font-size:.85rem;margin:.25rem 0 .5rem}.legend{display:flex;gap:1rem;margin:.25rem 0 .6rem;font-size:.85rem}.legend-item{display:inline-flex;align-items:center;gap:.4rem}.swatch{width:10px;height:10px;border-radius:50%;display:inline-block}.graph-well{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden}.graph-tip{max-width:320px;padding:.4rem .6rem;background:var(--panel);color:var(--text);border:1px solid var(--border);border-radius:6px;font-size:.85rem}.graph-tip small{color:var(--muted)}.graph-error{color:var(--error);font-size:.85rem}.trace summary{cursor:pointer;font-weight:600;display:flex;justify-content:space-between;align-items:baseline;gap:1rem;transition:color .15s ease}.trace summary:hover{color:var(--accent)}.trace summary::marker{color:var(--muted)}.trace-meta{font-weight:400;font-size:.85rem;color:var(--muted)}.trace-steps{list-style:none;margin:.85rem 0 0;padding:0}.trace-steps li{display:flex;gap:.75rem;padding:.6rem 0;border-bottom:1px solid var(--border)}.trace-steps li:last-child{border-bottom:none}.trace-num{flex:none;width:1.55rem;height:1.55rem;display:inline-flex;align-items:center;justify-content:center;border-radius:999px;border:1px solid var(--border);background:var(--bg);color:var(--muted);font-size:.75rem;font-weight:600;font-variant-numeric:tabular-nums}.trace-body{display:flex;flex-direction:column;gap:.15rem;min-width:0}.trace-name{font-weight:600;font-size:.9rem}.trace-what{color:var(--muted);font-size:.85rem}.status-page h2{font-size:1.05rem;margin:0 0 .5rem}.status-page dl{display:grid;grid-template-columns:minmax(8rem,auto) 1fr;gap:.5rem 1.25rem;margin:.5rem 0 0}.status-page dt{font-weight:600;color:var(--muted)}.status-page dd{margin:0}.dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:.5rem}.dot.up{background:var(--ok)}.dot.down{background:var(--error)}.muted{color:var(--muted)}@media (max-width: 520px){.status-page dl{grid-template-columns:1fr;gap:.15rem}.status-page dd{margin-bottom:.6rem}}.status-page h3{font-size:.95rem;margin:1.5rem 0 0}.eval-history{margin:.5rem 0 0}.eval-history figcaption{color:var(--muted);font-size:.85rem;margin-bottom:.4rem}.eval-chart{width:100%;height:auto;max-width:34rem;display:block}.eval-grid{stroke:var(--border);stroke-width:1}.eval-tick{fill:var(--muted);font-size:10px}.eval-line{fill:none;stroke-width:2;stroke-linejoin:round;stroke-linecap:round}.eval-dot{stroke:var(--panel);stroke-width:2}.eval-legend{list-style:none;display:flex;flex-wrap:wrap;gap:.35rem 1rem;padding:0;margin:.4rem 0 0;font-size:.85rem;color:var(--muted)}.eval-legend li{display:inline-flex;align-items:center;gap:.4rem}.eval-legend strong{color:var(--text)}.eval-table{margin-top:.6rem;font-size:.85rem}.eval-table summary{cursor:pointer;color:var(--muted)}.eval-table table{border-collapse:collapse;margin-top:.5rem;width:100%}.eval-table th,.eval-table td{border-bottom:1px solid var(--border);padding:.3rem .6rem .3rem 0;text-align:right}.eval-table thead th,.eval-table tbody th{text-align:left;font-weight:600;color:var(--muted)}