/* Reset, type fallback and container foundation adapted from the author-owned AgentHarness3D / ManyWorlds page. */
/* Decide What, Fit How Much: project page (v2). Static, local fonts, no external dependencies.
   Layout and visual language follow the ManyWorlds / UniRobo-Data page (see DESIGN_REFERENCES.md). */
:root {
  --bg: #f7f8fb;
  --paper: #ffffff;
  --ink: #0f172a;
  --ink-2: #334155;
  --ink-3: #64748b;
  --line: #e2e8f0;
  --line-2: #cbd5e1;
  --navy: #0b1020;
  --agent: #6366f1;  --agent-d: #4f46e5;  --agent-bg: #eef2ff;
  --tool: #10b981;   --tool-d: #059669;   --tool-bg: #ecfdf5;
  --gt: #f97316;     --gt-bg: #fff7ed;
  --alone: #94a3b8;
  --bad: #e11d48;    --bad-bg: #fff1f2;
  --prov: #ea580c;
  --t1: #0ea5e9; --t2: #6366f1; --t3: #f59e0b; --t4: #ec4899; --t5: #14b8a6; --bg-c: #8b5cf6;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(15,23,42,.06), 0 8px 24px rgba(15,23,42,.06);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 64px; }
body { margin: 0; font-family: var(--sans); color: var(--ink); background: var(--bg); line-height: 1.55; -webkit-font-smoothing: antialiased; }
a { color: var(--agent-d); text-decoration: none; }
a:hover { text-decoration: underline; }
code, .mono { font-family: var(--mono); font-size: .86em; }
img, video { max-width: 100%; display: block; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.nostyle-warning { display: none; }
.prov { color: var(--prov); font-weight: inherit; text-decoration: underline dotted rgba(234,88,12,.6); text-decoration-thickness: 1.5px; text-underline-offset: 3px; cursor: help; }
.prov::after { content: "*"; font-size: .7em; vertical-align: super; margin-left: 1px; }
.final .prov { color: inherit; text-decoration: none; cursor: auto; }
.final .prov::after, .final .pill-status, .final .prov-note { display: none; }
.ag { color: var(--agent-d); font-weight: 700; }
.tl { color: var(--tool-d); font-weight: 700; }

/* VMem-Bench: evidence-first layout; orange matches the paper's figures. */
:root{--bg:#fff;--ink:#1d1d1f;--ink-2:#4d4d50;--ink-3:#727276;--line:#e6e5e3;--orange:#e6550d;--muted:#77777b;--cream:#f7f7f5;--sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}
body{background:var(--bg);color:var(--ink);line-height:1.6}a{color:inherit}button,select{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #e6550d;outline-offset:5px}img{object-fit:cover}sup{font-size:.65em;vertical-align:super}h1,h2,h3,p,figure{margin:0}h1,h2,h3{line-height:1.08;letter-spacing:-.045em}.wrap{max-width:1200px;padding:0 32px}.skip{position:fixed;left:16px;top:-100px;z-index:100;background:white;padding:12px}.skip:focus{top:10px}.nav{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.nav-inner{display:flex;align-items:center;gap:32px;height:68px}.brand{font-size:19px;font-weight:700;letter-spacing:-.04em;display:flex;align-items:center;gap:8px;white-space:nowrap}.brand:hover{text-decoration:none}.brand-mark{display:inline-grid;place-items:center;background:var(--orange);color:white;width:27px;height:27px;border-radius:8px;font-size:24px;line-height:1}.nav-links{display:flex;gap:26px;margin-left:auto;font-size:13px;color:var(--ink-2)}.nav-paper{font-size:13px;white-space:nowrap;border:1px solid var(--line);border-radius:24px;padding:7px 14px}.hero{text-align:center;padding-top:66px;padding-bottom:58px}.eyebrow{font-size:11px;letter-spacing:.15em;font-weight:650;color:var(--muted)}.hero h1{font-size:clamp(60px,7.8vw,110px);font-weight:750;letter-spacing:-.068em;line-height:.98;margin:25px 0}.hero h1 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16px;font-size:13px;color:var(--ink);max-width:100%}.metric-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:35px}.metric-card{min-width:0}.metric-name{font-size:15px;font-weight:550;letter-spacing:-.02em}.metric-detail{font-size:11px;color:var(--ink-3);min-height:35px;margin-top:4px;line-height:1.5}.metric-values{display:flex;align-items:baseline;gap:14px;margin:15px 0}.metric-value{font-size:49px;font-weight:650;letter-spacing:-.065em}.metric-delta{font-size:17px;letter-spacing:-.04em;color:var(--orange)}.metric-bar-row{display:flex;align-items:center;gap:8px;margin:7px 0}.metric-track{flex:1;height:9px;position:relative;background:#e6e5e2;border-radius:3px;overflow:hidden}.metric-track i{display:block;height:100%;background:#88888b;transition:width .35s}.metric-bar-row.memory 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.wrap>a{margin-left:auto}.noscript{text-align:center;padding:20px;font-size:14px}section[id],header[id]{scroll-margin-top:100px}
@media(min-width:1500px){.hero{padding-top:80px;padding-bottom:70px}}
@media(max-width:900px){.nav-links{gap:15px}.nav-inner{gap:18px}.filmstrip{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 10px}.section-heading,.prompt-layout{gap:35px}.metric-grid{gap:20px}.metric-value{font-size:40px}.track{padding:24px}.track-flow{gap:8px;font-size:10px}.track-stats{gap:30px}.lesson-grid,.resource-grid{gap:25px}}
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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* Local Inter fonts keep rendering consistent without a CDN. */
@font-face{font-family:Inter;src:url("fonts/Inter-Regular.ttf") format("truetype");font-weight:400;font-display:swap}
@font-face{font-family:Inter;src:url("fonts/Inter-SemiBold.ttf") format("truetype");font-weight:500 600;font-display:swap}
@font-face{font-family:Inter;src:url("fonts/Inter-Bold.ttf") format("truetype");font-weight:650 900;font-display:swap}
:root{--sans:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}
@media(max-width:650px){.hero h1{font-size:clamp(42px,12.2vw,62px)}}

/* Wrap citation fields to the available width; source fields stay on one line. */
#bibtex{white-space:pre-wrap;overflow-wrap:anywhere}

.resource-grid article{border-top:1px solid #444;padding-top:18px}.resource-grid article>span{color:#808080;font-size:11px}

/* Bilingual navigation and Chinese typesetting. */
.language-switch{display:flex;gap:2px;padding:3px;border:1px solid var(--line);border-radius:24px;flex-shrink:0}
.language-switch button{border:0;border-radius:18px;background:transparent;color:var(--ink-3);padding:5px 9px;font-size:12px;line-height:1.4;white-space:nowrap}
.language-switch button[aria-pressed="true"]{background:var(--ink);color:white}
html:lang(zh-CN) body{font-family:Inter,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;line-height:1.75}
html:lang(zh-CN) h1,html:lang(zh-CN) h2,html:lang(zh-CN) h3{letter-spacing:-.025em;line-height:1.2}
html:lang(zh-CN) .eyebrow,html:lang(zh-CN) .section-label{letter-spacing:.04em}
html:lang(zh-CN) .hero h1{font-size:clamp(48px,7.2vw,96px)}
html:lang(zh-CN) .metric-name{line-height:1.4}
@media(max-width:800px){.nav-inner{gap:12px}.nav-paper{display:none}.language-switch{margin-left:auto}.nav-links{margin-left:auto;gap:16px}}
@media(max-width:480px){.nav-inner{gap:8px}.language-switch button{padding:5px 8px}.language-switch{margin-left:auto}}