/* LiveOption project site.
   Palette and type follow the AlphaBench project page so the two read as one
   body of work: teal primary, orange secondary, Space Grotesk headings over
   DM Sans body. The option-specific additions are the call/put pair and the
   per-model series colours, which are the manuscript's own figure colours so
   a model keeps one colour across the paper and the site. */

:root {
  --primary: #00B8A0;
  --primary-light: #00DBB6;
  --primary-dark: #00897B;
  --secondary: #FC5200;
  --gold: #E5A800;

  --bg: #FFFFFF;
  --bg-2: #F8F9FC;
  --bg-3: #F1F3F8;
  --bg-card: rgba(255, 255, 255, 0.95);
  --border: rgba(0, 0, 0, 0.08);
  --border-2: rgba(0, 0, 0, 0.12);

  --text: #1A1D2E;
  --text-2: #5A6478;
  --muted: #8994A8;

  /* Calls read green and puts red throughout, in the figures and here. */
  --call: #27AE60;
  --put: #E74C3C;

  --font-head: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  --font-body: 'DM Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 24px;
  --r-full: 9999px;

  --sp-xs: 0.5rem;
  --sp-sm: 1rem;
  --sp-md: 1.5rem;
  --sp-lg: 2rem;
  --sp-xl: 3rem;
  --sp-2xl: 4rem;
  --sp-3xl: 6rem;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg: 0 10px 25px rgba(0,0,0,.10), 0 4px 10px rgba(0,0,0,.05);
  --glow: 0 0 40px rgba(0,184,160,.12);

  --nav-h: 72px;
  --container: 1200px;
  --t-fast: 150ms ease;
  --t: 250ms ease;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid var(--primary); outline-offset: 4px; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.2; margin: 0 0 var(--sp-sm); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.5rem); letter-spacing: -0.02em; }
h3 { font-size: 1.2rem; }
p { margin: 0 0 var(--sp-sm); color: var(--text-2); }
a { color: var(--primary-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
code, .mono { font-family: var(--font-mono); font-size: 0.86em; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--sp-md); }
.narrow { max-width: 820px; }

/* ── navigation ─────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 100; height: var(--nav-h);
  display: flex; align-items: center;
  background: rgba(255,255,255,.88);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav .container { display: flex; align-items: center; gap: var(--sp-md); width: 100%; }
.brand { display: flex; align-items: center; gap: .6rem; font-family: var(--font-head); font-weight: 700; font-size: 1.15rem; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand .mark {
  width: 32px; height: 32px; border-radius: var(--r-sm);
  background: linear-gradient(135deg, var(--primary-light), var(--secondary));
  display: grid; place-items: center; color: #fff; font-size: .95rem;
}
.brand .lo-a { color: var(--secondary); }
.brand .lo-b { color: var(--primary); }
.nav-links { display: flex; gap: var(--sp-md); margin-left: var(--sp-lg); }
.nav-links a { color: var(--text-2); font-size: .95rem; font-weight: 500; }
.nav-links a:hover, .nav-links a.active { color: var(--primary-dark); text-decoration: none; }
.nav-actions { margin-left: auto; display: flex; gap: .6rem; }
.nav-actions .btn { white-space: nowrap; }

.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .62rem 1.1rem; border-radius: var(--r-md);
  font-family: var(--font-body); font-weight: 600; font-size: .92rem;
  border: 1px solid var(--border-2); background: #fff; color: var(--text);
  cursor: pointer; transition: all var(--t-fast); text-decoration: none;
}
.btn:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); text-decoration: none; }
.btn-primary { background: var(--secondary); border-color: var(--secondary); color: #fff; }
.btn-primary:hover { background: #e04a00; }
.btn-teal { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-teal:hover { background: var(--primary-dark); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-sm { padding: .4rem .75rem; font-size: .85rem; }

/* ── hero ───────────────────────────────────────────────────── */
.hero {
  padding: var(--sp-3xl) 0 var(--sp-2xl);
  background: linear-gradient(135deg, #FFFFFF 0%, #F8F9FC 50%, #F1F5F9 100%);
  text-align: center; position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(var(--border) 1px, transparent 1px),
                    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px; opacity: .5;
  mask-image: radial-gradient(ellipse at center, #000 10%, transparent 70%);
}
.hero > * { position: relative; }
.pill {
  display: inline-flex; align-items: center; gap: .45rem;
  padding: .4rem .95rem; border-radius: var(--r-full);
  background: rgba(229,168,0,.1); border: 1px solid rgba(229,168,0,.25);
  color: #96700a; font-size: .85rem; font-weight: 600; margin-bottom: var(--sp-md);
}
.hero h1 {
  font-size: clamp(2.8rem, 7vw, 4.6rem); letter-spacing: -0.03em; margin-bottom: var(--sp-sm);
}
.hero h1 .a { color: var(--secondary); }
.hero h1 .b { color: var(--primary); }
.hero .tagline {
  font-family: var(--font-head); font-weight: 700; color: var(--text);
  font-size: clamp(1.05rem, 2.4vw, 1.4rem); max-width: 720px; margin: 0 auto var(--sp-md);
}
.hero .lede { max-width: 680px; margin: 0 auto var(--sp-lg); }
.hero-actions { display: flex; gap: .75rem; justify-content: center; flex-wrap: wrap; }

.stat-strip {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--sp-sm); margin-top: var(--sp-2xl);
}
.stat { text-align: center; padding: var(--sp-sm); }
.stat .n { font-family: var(--font-head); font-size: 1.9rem; font-weight: 700; color: var(--primary-dark); }
.stat .l { font-size: .82rem; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }

/* ── sections ───────────────────────────────────────────────── */
section { padding: var(--sp-3xl) 0; }
section.alt { background: var(--bg-2); }
.sec-head { text-align: center; max-width: 760px; margin: 0 auto var(--sp-xl); }
.sec-head .eyebrow {
  color: var(--primary); font-weight: 700; font-size: .82rem;
  text-transform: uppercase; letter-spacing: .1em; margin-bottom: .4rem;
}

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--sp-md); }
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: var(--sp-md);
  transition: all var(--t); position: relative; overflow: hidden;
}
.card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); border-color: var(--border-2); }
.card .tag {
  display: inline-block; padding: .2rem .6rem; border-radius: var(--r-full);
  font-size: .72rem; font-weight: 700; letter-spacing: .04em;
  background: rgba(0,184,160,.1); color: var(--primary-dark); margin-bottom: .6rem;
}
.card .tag.orange { background: rgba(252,82,0,.1); color: #c24000; }
.card .tag.gold { background: rgba(229,168,0,.12); color: #96700a; }
.card p:last-child { margin-bottom: 0; }

/* ── tables ─────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--r-lg); background: #fff; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { padding: .6rem .75rem; text-align: right; white-space: nowrap; }
th:first-child, td:first-child { text-align: left; }
thead th {
  background: var(--bg-3); font-family: var(--font-head); font-weight: 600;
  font-size: .8rem; color: var(--text-2); text-transform: uppercase; letter-spacing: .04em;
  position: sticky; top: 0; cursor: pointer; user-select: none;
}
thead th:hover { color: var(--primary-dark); }
thead th .arrow { opacity: .35; font-size: .7em; margin-left: .25rem; }
thead th.sorted .arrow { opacity: 1; color: var(--primary); }
tbody tr { border-top: 1px solid var(--border); }
tbody tr:hover { background: var(--bg-2); }
td.num { font-variant-numeric: tabular-nums; }
.pos { color: #1e8e5a; }
.neg { color: #c0392b; }
.model-cell { display: flex; align-items: center; gap: .5rem; font-weight: 600; }
.swatch { width: 10px; height: 10px; border-radius: 3px; flex: none; }

.controls { display: flex; gap: .6rem; flex-wrap: wrap; align-items: center; margin-bottom: var(--sp-md); }
.seg { display: inline-flex; background: var(--bg-3); border-radius: var(--r-md); padding: 3px; }
.seg button {
  border: 0; background: none; padding: .45rem .9rem; border-radius: var(--r-sm);
  font-family: var(--font-body); font-weight: 600; font-size: .88rem;
  color: var(--text-2); cursor: pointer; transition: all var(--t-fast);
}
.seg button.on { background: #fff; color: var(--primary-dark); box-shadow: var(--shadow-sm); }

.note {
  font-size: .85rem; color: var(--muted); margin-top: .75rem; line-height: 1.55;
}
.callout {
  border-left: 3px solid var(--gold); background: rgba(229,168,0,.06);
  padding: var(--sp-sm) var(--sp-md); border-radius: 0 var(--r-md) var(--r-md) 0;
  margin: var(--sp-md) 0; font-size: .92rem;
}
.callout strong { color: #96700a; }
.callout.teal { border-left-color: var(--primary); background: rgba(0,184,160,.06); }
.callout.teal strong { color: var(--primary-dark); }

/* ── figures ────────────────────────────────────────────────── */
figure { margin: var(--sp-lg) 0; }
figure img { width: 100%; border: 1px solid var(--border); border-radius: var(--r-lg); background: #fff; }
figcaption { font-size: .85rem; color: var(--muted); margin-top: .6rem; text-align: center; }

.chart { width: 100%; }
.chart text { font-family: var(--font-body); }

/* ── playground ─────────────────────────────────────────────── */
.pg { display: grid; grid-template-columns: 320px 1fr; gap: var(--sp-md); align-items: start; }
@media (max-width: 900px) { .pg { grid-template-columns: 1fr; } }

.pg-side { position: sticky; top: calc(var(--nav-h) + 16px); display: grid; gap: var(--sp-sm); }
.pg-main { min-width: 0; }
.panel { background: #fff; border: 1px solid var(--border); border-radius: var(--r-lg); padding: var(--sp-md); }
.panel h3 { font-size: 1rem; margin-bottom: .75rem; }

label { display: block; font-size: .82rem; font-weight: 600; color: var(--text-2); margin-bottom: .3rem; }
input[type=text], input[type=password], select, textarea {
  width: 100%; padding: .55rem .7rem; border: 1px solid var(--border-2);
  border-radius: var(--r-sm); font-family: var(--font-body); font-size: .9rem;
  background: #fff; color: var(--text);
}
input:focus, select:focus, textarea:focus { outline: 2px solid rgba(0,184,160,.35); border-color: var(--primary); }
.field { margin-bottom: .8rem; }
.field .hint { font-size: .76rem; color: var(--muted); margin-top: .25rem; }

.scenario-list { display: grid; gap: .5rem; }
.scenario {
  text-align: left; border: 1px solid var(--border); background: #fff;
  border-radius: var(--r-md); padding: .7rem .85rem; cursor: pointer;
  transition: all var(--t-fast); font-family: var(--font-body);
}
.scenario:hover { border-color: var(--primary); }
.scenario.on { border-color: var(--primary); background: rgba(0,184,160,.05); box-shadow: var(--glow); }
.scenario .t { font-weight: 700; font-size: .92rem; }
.scenario .s { font-size: .78rem; color: var(--muted); }

.prompt-box {
  font-family: var(--font-mono); font-size: .78rem; line-height: 1.5;
  background: var(--bg-3); border: 1px solid var(--border);
  border-radius: var(--r-md); padding: var(--sp-sm);
  max-height: 420px; overflow: auto; white-space: pre-wrap; word-break: break-word;
}
.answers { display: grid; gap: .6rem; }
.answer {
  border: 1px solid var(--border); border-radius: var(--r-md);
  padding: .7rem .85rem; background: #fff;
}
.answer.mine { border-color: var(--secondary); background: rgba(252,82,0,.04); }
.answer .who { display: flex; align-items: center; gap: .5rem; font-weight: 700; font-size: .9rem; margin-bottom: .35rem; }
.answer .who .badge {
  font-size: .68rem; font-weight: 700; padding: .1rem .45rem; border-radius: var(--r-full);
  background: var(--bg-3); color: var(--text-2); letter-spacing: .03em;
}
.legs { display: grid; gap: .25rem; margin-top: .4rem; }
.leg {
  display: flex; align-items: center; gap: .5rem; font-family: var(--font-mono);
  font-size: .78rem; padding: .25rem .5rem; border-radius: var(--r-sm); background: var(--bg-2);
}
.leg .side { font-weight: 700; min-width: 2.6rem; }
.leg .side.buy { color: var(--call); }
.leg .side.sell { color: var(--put); }
.no-trade { font-size: .82rem; color: var(--muted); font-style: italic; }

.spinner {
  width: 14px; height: 14px; border: 2px solid rgba(255,255,255,.4);
  border-top-color: #fff; border-radius: 50%; animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.err {
  border-left: 3px solid var(--put); background: rgba(231,76,60,.06);
  padding: .7rem .9rem; border-radius: 0 var(--r-md) var(--r-md) 0;
  font-size: .86rem; color: #a93226; margin-top: .75rem;
}

footer {
  border-top: 1px solid var(--border); padding: var(--sp-lg) 0;
  font-size: .86rem; color: var(--muted); background: var(--bg-2);
}
footer .container { display: flex; justify-content: space-between; gap: var(--sp-md); flex-wrap: wrap; }

.cite {
  font-family: var(--font-mono); font-size: .8rem; background: var(--bg-3);
  border: 1px solid var(--border); border-radius: var(--r-md);
  padding: var(--sp-sm); white-space: pre; overflow-x: auto;
}

@media (max-width: 720px) {
  .nav-links { display: none; }
  section { padding: var(--sp-2xl) 0; }
}

/* Recorded demo entry points and task browser. */
.demo-preview { display: flex; flex-direction: column; color: var(--text); }
.demo-preview:hover { text-decoration: none; }
.demo-preview p { flex: 1; }
.demo-link { display: inline-flex; align-items: center; gap: .6rem; margin-top: 1rem; color: var(--primary-dark); font-size: .88rem; font-weight: 700; }
.demo-link span { transition: transform var(--t-fast); }
.demo-preview:hover .demo-link span, .demo-task:hover .demo-link span { transform: translateX(3px); }
.results-details { border: 1px solid var(--border); border-radius: var(--r-lg); background: #fff; }
.results-details > summary { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 1.5rem; cursor: pointer; list-style: none; }
.results-details > summary::-webkit-details-marker { display: none; }
.results-details > summary > span:first-child { display: grid; gap: .25rem; }
.results-details .eyebrow, .demo-header .eyebrow, .scenario-header .eyebrow { color: var(--primary-dark); font-size: .76rem; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; }
.results-title { font-family: var(--font-head); font-weight: 700; font-size: 1.2rem; }
.results-details .note { margin: 0; }
.details-icon { font-size: 1.6rem; color: var(--primary-dark); }
.results-details[open] .details-icon { transform: rotate(45deg); }
.results-content { border-top: 1px solid var(--border); padding: 1.5rem; }
.results-content > .note { margin-bottom: 1.2rem; }
.demo-header { padding: 3rem 0 2rem; background: var(--bg-2); border-bottom: 1px solid var(--border); }
.back-link { display: inline-block; margin-bottom: 1.75rem; color: var(--text-2); font-size: .85rem; }
.demo-header h1 { font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -.035em; margin: .5rem 0 .75rem; }
.demo-header p { max-width: 660px; margin: 0; }
.demo-browser { padding: 2rem 0 4rem; }
.step-heading { display: flex; align-items: baseline; gap: .65rem; font-size: .85rem; color: var(--primary-dark); }
.step-heading span { color: var(--text); font-size: 1.05rem; }
.demo-task-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 1.5rem; }
.demo-task { text-align: left; cursor: pointer; font-family: var(--font-body); }
.demo-task h3 { font-size: 1.08rem; }
.demo-task p { font-size: .85rem; margin-bottom: 0; }
.demo-task.on { border-color: var(--primary); box-shadow: 0 0 0 1px var(--primary); background: rgba(0,184,160,.035); }
.demo-task .demo-link { margin-top: .75rem; }
.demo-workspace { margin-top: 2rem; grid-template-columns: 260px minmax(0, 1fr); }
.demo-workspace .seg { flex-wrap: wrap; }
.recording-note { padding: .5rem .25rem; color: var(--text-2); font-size: .82rem; }
.recording-note summary { cursor: pointer; }
.scenario-header { margin-bottom: 1rem; }
.scenario-header h2 { font-size: 1.55rem; margin: .35rem 0 .5rem; }
.scenario-header > p { font-size: .9rem; }
.scenario-header .controls { margin: 1rem 0 0; }
.scenario-header .prompt-box { margin-top: 1rem; }
.scenario-header .prompt-box label { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; font: .8rem var(--font-body); }
.scenario-header .prompt-box select { max-width: 100%; min-width: 0; padding: .5rem; }
.scenario-header .prompt-box pre { white-space: pre-wrap; overflow-wrap: anywhere; margin: 1rem 0 0; font: inherit; }
.scenario-header #sc-meta { font-size: .75rem; margin-top: 1rem; }
.answers-heading { font-size: 1.15rem; }
.answers-intro { margin: -.25rem 0 1.25rem; }
.answer .who { flex-wrap: wrap; }
.answer-reasoning { font-size: .86rem; color: var(--text-2); margin: .5rem 0 .75rem; overflow-wrap: anywhere; }
.leg { flex-wrap: wrap; overflow-wrap: anywhere; }

@media (max-width: 1050px) {
  .nav-links { gap: 1rem; margin-left: .5rem; }
}
@media (max-width: 900px) {
  .demo-workspace { grid-template-columns: 1fr; }
  .demo-workspace .pg-side { position: static; }
}
@media (max-width: 720px) {
  .demo-task-list { grid-template-columns: 1fr; }
  .demo-task { padding: 1rem; }
  .demo-header { padding: 2rem 0; }
  .demo-header p { font-size: .92rem; }
  .demos-page .nav-actions > a:first-of-type { display: none; }
  .results-content { padding: 1rem; }
}
@media (max-width: 420px) {
  .nav .container { gap: .5rem; padding: 0 .75rem; }
  .nav-actions { gap: .35rem; }
  .nav-actions .btn { padding: .4rem .55rem; font-size: .76rem; }
  .brand { gap: .35rem; font-size: 1rem; }
  .brand .mark { width: 26px; height: 26px; }
}

/* Shared language selector and CJK typography. */
.language-select {
  width: auto; min-width: 76px; max-width: 100px; padding: .4rem .55rem;
  font-size: .82rem; line-height: 1.4; align-self: center; cursor: pointer;
}
html:lang(zh-CN) body { font-family: 'DM Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif; }
html:lang(ja) body { font-family: 'DM Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', Meiryo, sans-serif; }
html:lang(zh-CN) h1, html:lang(zh-CN) h2, html:lang(zh-CN) h3,
html:lang(ja) h1, html:lang(ja) h2, html:lang(ja) h3 { line-height: 1.45; }
html:lang(zh-CN) .hero .lede, html:lang(ja) .hero .lede { line-height: 1.9; }
.original-figure-note { display: block; margin-top: .35rem; font-size: .78rem; }
.original-note { border-left: 2px solid var(--border-2); padding-left: .75rem; margin-bottom: 1.25rem; }
.seg { max-width: 100%; flex-wrap: wrap; }
@media (max-width: 1100px) {
  .nav-links { gap: .75rem; margin-left: 0; }
  .nav .container { gap: .75rem; }
}
@media (max-width: 980px) { .nav-links { display: none; } }
@media (max-width: 520px) {
  :root { --nav-h: 110px; }
  .nav { height: auto; min-height: var(--nav-h); }
  .nav .container { flex-wrap: wrap; padding-top: .55rem; padding-bottom: .55rem; gap: .5rem; }
  .nav-actions { width: 100%; margin-left: 0; justify-content: space-between; gap: .3rem; }
  .nav-actions .btn { padding: .4rem .55rem; font-size: .76rem; }
  .language-select { min-width: 72px; padding: .35rem .4rem; }
  .demos-page .nav-actions > a:first-of-type { display: inline-flex; }
  .demo-task p, .card p { overflow-wrap: anywhere; }
}

/* Ordered homepage: tasks, agents, infrastructure, then results. */
.section-anchor { display: block; height: 0; scroll-margin-top: var(--nav-h); }
.design-section .sec-head { margin-bottom: 2.5rem; }
.task-facts { display: grid; gap: .6rem; margin-top: 1.4rem; width: 100%; }
.task-facts > span { display: block; font-size: .78rem; color: var(--text-2); background: #f4f7f7; border-left: 2px solid #b3d8d0; padding: .55rem .7rem; border-radius: 0 5px 5px 0; }
.agent-view-tabs { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: .8rem; margin-bottom: 1rem; }
.agent-view-tabs button { display: flex; flex-direction: column; gap: .45rem; text-align: left; min-width: 0; background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 1.2rem; cursor: pointer; color: var(--text); font-family: var(--font-body); }
.agent-view-tabs button > span { color: var(--primary-dark); font: 600 .75rem var(--font-mono); }
.agent-view-tabs strong { font-size: 1rem; line-height: 1.6; overflow-wrap: anywhere; }
.agent-view-tabs small { color: var(--text-2); font-size: .8rem; line-height: 1.6; }
.agent-view-tabs .on { border-color: #00796d; box-shadow: inset 0 0 0 1px #00796d; background: #edf7f3; }
.agent-canvas { background: white; border: 1px solid var(--border); border-radius: 18px; padding: 2rem; min-width: 0; }
.agent-paper-link { display: block; margin-top: 1.25rem; font-size: .85rem; }
.agent-workflow { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 1rem; }
.agent-node { position: relative; display: flex; flex-direction: column; gap: .5rem; align-items: flex-start; text-align: left; border: 1px solid var(--border); background: #f8fafb; border-radius: 10px; padding: 1rem; color: var(--text); font-family: var(--font-body); cursor: pointer; min-width: 0; }
.agent-node:not(:last-child)::after { content: '→'; position: absolute; right: -16px; top: 40%; color: #778d89; }
.agent-node > span { font: .75rem var(--font-mono); color: var(--primary-dark); }
.agent-node strong { font-size: .95rem; line-height: 1.6; }
.agent-node small { font-size: .74rem; color: var(--text-2); line-height: 1.6; }
.agent-node.on { background: #e9f5f0; border-color: #00796d; }
.agent-hold { margin: 1rem 0 1.5rem; font-size: .8rem; color: var(--text-2); }
.agent-stage-panel { display: grid; grid-template-columns: minmax(0,.9fr) minmax(0,1.3fr); gap: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--border); }
.agent-stage-copy h3 { margin-top: .75rem; }
.agent-stage-copy p, .agent-stage-copy a { font-size: .88rem; line-height: 1.85; }
.agent-stage-artifact { min-width: 0; }
.agent-stage-artifact pre { white-space: pre-wrap; overflow-wrap: anywhere; max-height: 260px; overflow: auto; padding: 1rem; background: #f4f6f9; border-radius: 8px; font: .72rem/1.8 var(--font-mono); }
.agent-artifact { padding: 1rem; background: #f6f8fa; border-radius: 8px; margin-top: 1rem; font-size: .8rem; }
.agent-artifact summary { cursor: pointer; }
.agent-reasoning { font-size: .88rem; line-height: 1.8; }
.agent-targets { margin: 1rem 0 0; padding: 1rem 1rem 1rem 2rem; background: #f5f7f8; border-radius: 8px; font: .75rem/1.9 var(--font-mono); overflow-wrap: anywhere; }
.agent-original { font-size: .72rem; color: var(--text-2); }
.agent-order-list { display: grid; gap: .65rem; }
.agent-order-list article { display: flex; flex-wrap: wrap; align-items: center; gap: .7rem; background: #f4f8f7; padding: 1rem; border-radius: 8px; }
.agent-order-list code { overflow-wrap: anywhere; }
.agent-order-list strong, .agent-side { font-size: .8rem; }
.agent-side { font-weight: 700; color: #176d62; }
.agent-checks { list-style: none; padding: 0; display: grid; gap: .7rem; }
.agent-checks li { display: flex; flex-wrap: wrap; gap: 1rem; padding: 1rem; background: #edf6f1; border-radius: 8px; font-size: .82rem; }
.agent-adapter-intro { max-width: 780px; margin-bottom: 1.5rem; }
.agent-adapter-intro h3 { margin: .7rem 0; font-size: 1.4rem; }
.agent-adapter-intro p { font-size: .9rem; line-height: 1.85; }
.agent-method { font: 700 .8rem var(--font-mono); color: var(--primary-dark); }
.agent-sliders { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 1.5rem; margin: 1rem 0 2rem; padding: 1rem; border: 1px solid var(--border); border-radius: 10px; }
.agent-sliders label { margin: 0; font-size: .8rem; }
.agent-sliders output { float: right; font-family: var(--font-mono); color: var(--text); }
.agent-sliders input { width: 100%; margin-top: 1rem; accent-color: #00796d; }
.agent-avsr-grid, .agent-qocr-layout { display: grid; grid-template-columns: minmax(0,.9fr) minmax(0,1.1fr); align-items: center; gap: 2rem; }
.agent-avsr-grid table, .qocr-buckets { width: 100%; border-collapse: separate; border-spacing: 5px; font-size: .8rem; table-layout: fixed; }
.agent-avsr-grid caption { text-align: left; font-weight: 600; margin-bottom: .75rem; }
.agent-avsr-grid th, .qocr-buckets th { font-size: .75rem; color: var(--text-2); padding: .3rem; font-weight: 500; }
.agent-avsr-grid td, .qocr-buckets td { padding: 0; }
.agent-avsr-grid td button, .qocr-buckets button { display: block; width: 100%; min-height: 54px; padding: .6rem .25rem; border: 1px solid #d5e8e1; background: #eef6f2; border-radius: 6px; color: #255b50; font: .85rem var(--font-mono); cursor: pointer; }
.agent-avsr-grid td button.on, .qocr-buckets button.on { background: #007367; color: white; border-color: #007367; }
.agent-smile { min-width: 0; }
.agent-chart-hint { display: none; font-size: .75rem; color: var(--text-2); }
.agent-smile svg { width: 100%; display: block; }
.agent-smile text { font: 12px var(--font-body); fill: var(--text-2); }
.agent-curve-key { display: flex; justify-content: center; gap: 1.4rem; margin: .75rem 0; font-size: .75rem; }
.agent-curve-key span { display: flex; align-items: center; gap: .4rem; }
.agent-curve-key i { width: 18px; height: 3px; }
.agent-selection { padding: .85rem 1rem; border-radius: 8px; background: #f2f7f4; font: .85rem/1.8 var(--font-mono); color: var(--text); overflow-wrap: anywhere; margin-top: 1rem; }
.agent-metrics { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: .8rem; margin-top: 1rem; }
.agent-metrics > div { padding: .9rem; border: 1px solid var(--border); border-radius: 8px; min-width: 0; }
.agent-metrics span { display: block; color: var(--text-2); font-size: .75rem; }
.agent-metrics strong { display: block; margin-top: .4rem; font-size: .9rem; }
.agent-example-note { font-size: .75rem; color: var(--text-2); border-left: 2px solid #99c8b9; padding-left: .7rem; margin: 1.5rem 0 0; }
.agent-qocr-controls { display: flex; flex-wrap: wrap; gap: 1rem; margin: 1rem 0 1.5rem; }
.agent-qocr-controls label { flex: 1; max-width: 260px; }
.qocr-buckets small { display: block; margin-top: .25rem; font: .65rem var(--font-body); }
.agent-qocr-result { min-width: 0; }
.agent-qocr-result h4 { font-size: .85rem; margin: 1.1rem 0 .6rem; }
.agent-qocr-result pre { background: #f4f6f9; border-radius: 8px; padding: 1rem; font: .75rem/1.8 var(--font-mono); white-space: pre-wrap; overflow-wrap: anywhere; }
.agent-canvas .note { color: var(--text-2); font-size: .78rem; }
.results-facts { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.results-facts > div { padding: 1.25rem; border: 1px solid var(--border); border-radius: 12px; background: white; }
.results-facts strong { display: block; color: #007367; font: 600 1.8rem var(--font-head); }
.results-facts span { display: block; color: var(--text-2); font-size: .8rem; margin-top: .4rem; }
.results-dashboard { border: 1px solid var(--border); background: #fff; border-radius: 18px; overflow: hidden; margin-bottom: 1.4rem; }
.dashboard-tabs { display: flex; overflow: auto; padding: .6rem; gap: .4rem; background: #f0f5f4; border-bottom: 1px solid var(--border); }
.dashboard-tabs button { flex: 1; min-width: 145px; border: none; background: transparent; color: var(--text-2); padding: .85rem .6rem; border-radius: 8px; font: 600 .85rem var(--font-body); cursor: pointer; }
.dashboard-tabs button.on { background: #fff; color: #006e62; box-shadow: var(--shadow-sm); }
.dashboard-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.5rem; padding: 1.4rem; border-bottom: 1px solid var(--border); }
.dashboard-toolbar label { margin: 0; width: 230px; max-width: 100%; }
.dashboard-toolbar p { flex: 1; font-size: .78rem; margin: 0; min-width: 180px; }
.dashboard-main { display: grid; grid-template-columns: minmax(0,1fr) 270px; }
.dashboard-plot { padding: 1.5rem; min-width: 0; }
.dashboard-plot h3 { font-size: 1.05rem; }
.dashboard-plot .note { font-size: .78rem; color: var(--text-2); min-height: 3rem; }
.dashboard-plot .viz-chart { min-width: 660px; }
.dashboard-inspector { background: #f5f8f7; border-left: 1px solid var(--border); padding: 1.5rem; min-width: 0; }
.dashboard-inspector .eyebrow { font-size: .65rem; }
.dashboard-inspector h3 { font-size: .95rem; line-height: 1.7; overflow-wrap: anywhere; margin-top: .75rem; }
.dashboard-inspector h3 i { display: inline-block; width: 9px; height: 9px; margin-right: .45rem; border-radius: 2px; }
.dashboard-inspector dl { margin: 1rem 0; }
.dashboard-inspector dl > div { border-top: 1px solid #dfe9e4; padding: .8rem 0; }
.dashboard-inspector dt { font-size: .72rem; color: var(--text-2); }
.dashboard-inspector dd { margin: .35rem 0 0; color: var(--text); font: .85rem var(--font-mono); overflow-wrap: anywhere; }
.dashboard-inspector .note { color: var(--text-2); font-size: .72rem; line-height: 1.9; }
.dashboard-heatmap, .dashboard-dist-scroll { overflow: auto; }
.dashboard-heatmap table { border-collapse: separate; border-spacing: 4px 7px; width: 100%; min-width: 640px; table-layout: fixed; }
.dashboard-heatmap caption { display: none; }
.dashboard-heatmap th { color: var(--text-2); font-size: .72rem; font-weight: 500; }
.dashboard-heatmap th:first-child { width: 145px; text-align: left; }
.dashboard-heatmap td { padding: 0; }
.dashboard-heatmap button { min-height: 37px; border: 2px solid transparent; border-radius: 6px; padding: .4rem .1rem; width: 100%; color: #263c39; font: .75rem var(--font-mono); cursor: pointer; }
.dashboard-heatmap button.on { border-color: #006e62; box-shadow: inset 0 0 0 1px white; }
#dashboard-distribution { min-width: 700px; }
.dashboard-scroll-hint { display: none; font-size: .72rem; color: var(--text-2); margin: 1rem 0 0; }
.results-detail-wrap { margin-top: 1.5rem; }
.results-detail-wrap .results-details > summary { padding: 1.2rem 1.5rem; }
#results .table-wrap { border-radius: 10px; }
#results #results-table th { background: #edf4f1; color: #34544b; font-size: .75rem; }
#results #results-table td { font-size: .78rem; padding-top: 1rem; padding-bottom: 1rem; }
#results .results-detail-wrap .note { color: var(--text-2); }
#results .pos { color: #167752; }
#results .neg { color: #b23c33; }
@media (max-width: 1050px) {
  .dashboard-main { grid-template-columns: minmax(0,1fr); }
  .dashboard-inspector { border-left: none; border-top: 1px solid var(--border); }
  .dashboard-inspector dl { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 1rem; }
}
@media (max-width: 800px) {
  .agent-workflow { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .agent-node::after { display: none; }
  .agent-stage-panel, .agent-avsr-grid, .agent-qocr-layout { grid-template-columns: minmax(0,1fr); }
  .dashboard-scroll-hint { display: block; }
}
@media (max-width: 600px) {
  .agent-smile { overflow: auto; }
  .agent-smile svg { min-width: 580px; }
  .agent-chart-hint { display: block; }
  .agent-view-tabs { gap: .4rem; }
  .agent-view-tabs button { padding: .7rem .5rem; }
  .agent-view-tabs strong { font-size: .75rem; }
  .agent-view-tabs small { display: none; }
  .agent-canvas { padding: 1rem; }
  .agent-sliders { grid-template-columns: minmax(0,1fr); gap: 1.2rem; }
  .agent-metrics { grid-template-columns: minmax(0,1fr); }
  .agent-avsr-grid table, .qocr-buckets { border-spacing: 3px; }
  .results-facts { grid-template-columns: repeat(2,minmax(0,1fr)); gap: .6rem; }
  .results-facts > div { padding: 1rem; }
  .results-facts span { font-size: .72rem; }
  .dashboard-plot, .dashboard-inspector { padding: 1rem; }
  .dashboard-inspector dl { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .dashboard-toolbar label { width: 100%; }
}

/* Homepage interactive figures and infrastructure. */
.viz-toolbar { display: flex; flex-wrap: wrap; gap: .8rem; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
#visual-results .note, .infra-flow .note { color: var(--text-2); }
.viz-mobile-hint { display: none; }
.viz-toolbar h3 { margin: 0; }
.viz-toolbar label { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem; font-size: .85rem; font-weight: 600; min-width: 0; }
.viz-toolbar select { font: inherit; color: var(--text); padding: .5rem .65rem; border: 1px solid var(--border-2); border-radius: 8px; background: white; min-width: 0; max-width: 100%; }
.viz-toolbar .note { margin: 0; max-width: 560px; }
.viz-panels { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 1rem; }
.viz-panels .panel { min-width: 0; }
.viz-wide { grid-column: 1 / -1; }
.viz-scroll { overflow: auto; max-width: 100%; border-radius: 10px; }
.viz-scroll:focus-visible { outline: 2px solid var(--primary-dark); outline-offset: 2px; }
.viz-chart { display: block; width: 100%; min-width: 520px; }
.viz-wide .viz-chart { min-width: 720px; }
.viz-chart text { font: 12px var(--font-body); fill: var(--text-2); }
.viz-chart [role=button] { cursor: pointer; }
.viz-chart [role=button]:focus-visible { outline: 2px solid var(--primary-dark); outline-offset: 2px; }
.viz-gridline { stroke: #e1e7ec; stroke-width: 1; }
.viz-zero { stroke: #788796; stroke-width: 1.2; stroke-dasharray: 4 4; }
.viz-selected { margin: 1rem 0 0; background: #f2f8f6; border-radius: 8px; padding: .85rem; font-size: .8rem; line-height: 1.8; overflow-wrap: anywhere; }
.viz-model-key, .viz-structure-key { display: flex; flex-wrap: wrap; gap: .4rem .7rem; margin-top: .75rem; }
.viz-model { display: inline-flex; align-items: center; gap: .4rem; padding: .3rem .45rem; font: .7rem var(--font-body); border: 1px solid transparent; border-radius: 6px; background: none; color: var(--text-2); cursor: pointer; }
.viz-model.on { background: #edf6f3; border-color: var(--primary-dark); }
.viz-model i, .viz-structure-key i { width: 8px; height: 8px; border-radius: 2px; display: inline-block; flex-shrink: 0; }
.viz-structure-key span { display: inline-flex; align-items: center; gap: .4rem; font-size: .7rem; color: var(--text-2); }
.viz-links { display: flex; flex-wrap: wrap; align-items: center; gap: 1.25rem; margin: 1.5rem 0 1rem; }
.infra-layout { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 3rem; align-items: center; }
.infra-flow { display: grid; gap: .6rem; background: #fff; border: 1px solid var(--border); border-radius: 18px; padding: 1.8rem; }
.infra-layer { border: 1px solid var(--border); border-radius: 10px; padding: 1rem; text-align: center; }
.infra-layer h3 { margin-top: .6rem; font-size: 1rem; }
.infra-layer p { font-size: .8rem; margin: 0; }
.infra-arrow { text-align: center; color: var(--primary-dark); font-size: 1.5rem; line-height: 1; }
.infra-hub { display: flex; flex-direction: column; gap: .35rem; text-align: center; padding: 1.2rem; border-radius: 12px; background: #e9f5f1; border: 1px solid #abd9cb; }
.infra-hub strong { font: 700 1.5rem var(--font-head); }
.infra-hub span { color: var(--text-2); font-size: .8rem; }
.infra-services { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: .5rem; }
.infra-services > div { display: flex; flex-direction: column; gap: .45rem; text-align: center; padding: .9rem .4rem; border: 1px solid var(--border); border-radius: 8px; }
.infra-services code { color: var(--primary-dark); font-weight: 700; }
.infra-services span { font-size: .75rem; color: var(--text-2); }
.infra-flow .note { margin: .5rem 0 0; font-size: .75rem; }
.infra-description { display: grid; gap: 1.5rem; }
.infra-description h3 { font-size: 1.1rem; }
.infra-description p { font-size: .9rem; }
.infra-description a { font-size: .85rem; font-weight: 600; }
.infra-footer { display: flex; flex-wrap: wrap; align-items: center; gap: 1.5rem; justify-content: space-between; margin-top: 2rem; border-top: 1px solid var(--border); padding-top: 1.5rem; }
.infra-footer p { max-width: 700px; font-size: .9rem; margin: 0; }
.infra-footer .btn-teal { background: #007367; border-color: #007367; }
@media (max-width: 900px) {
  .viz-mobile-hint { display: block; margin-top: 1rem; }
  .viz-panels, .infra-layout { grid-template-columns: minmax(0,1fr); }
  .infra-layout { gap: 1.5rem; }
  .infra-flow { padding: 1.1rem; }
}

/* Recorded replay explorer: each tab keeps a compact, separately paged view. */
.replay-tabs { margin: 1.25rem 0; position: sticky; top: calc(var(--nav-h) + 8px); z-index: 3; padding: .45rem; background: rgba(255,255,255,.97); border: 1px solid var(--border); border-radius: 12px; }
.replay-tabs button { min-height: 40px; }
#replay-host { display: grid; grid-template-columns: minmax(0,1fr); gap: 1rem; min-width: 0; }
#replay-host > * { min-width: 0; }
#replay-host .note { color: var(--text-2); }
.replay-status-partial { border-left: 3px solid #b24c39; background: #fff6ef; color: #7d3529 !important; padding: .65rem .8rem; }
#replay-host[hidden], #replay-tabs[hidden], #opening-panel[hidden] { display: none; }
.replay-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .75rem; }
.replay-toolbar h3 { margin: 0; }
.replay-toolbar label, .replay-jump { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem; font-size: .82rem; font-weight: 600; }
.replay-toolbar select, .replay-jump select { min-width: 0; max-width: 100%; width: auto; padding: .6rem .7rem; margin: 0; font-size: .82rem; }
.replay-toolbar label { min-width: 0; max-width: 100%; }
.replay-source { margin: 1rem 0 .5rem; color: #006e62; font-size: .78rem; font-weight: 600; line-height: 1.7; }
.replay-kpis { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: .6rem; }
.replay-kpi { padding: 1rem; background: #fff; border: 1px solid var(--border); border-radius: 12px; min-width: 0; }
.replay-kpi > span { display: block; font-size: .74rem; line-height: 1.5; color: var(--text-2); }
.replay-kpi strong { display: block; margin-top: .55rem; font: 500 1.2rem var(--font-mono); overflow-wrap: anywhere; }
.replay-scroll { overflow: auto; width: 100%; max-width: 100%; margin: .9rem 0; border: 1px solid var(--border); border-radius: 10px; }
.replay-scroll:focus-visible { outline: 2px solid var(--primary-dark); outline-offset: 2px; }
.replay-chart { display: block; width: 100%; min-width: 760px; }
.replay-chart text { fill: var(--text-2); font: 12px var(--font-body); }
.replay-chart [data-checkpoint] { cursor: pointer; }
.replay-chart [data-checkpoint]:focus { outline: none; }
.replay-chart [data-checkpoint]:focus circle { stroke: #111827; stroke-width: 4; }
.replay-legend { display: flex; flex-wrap: wrap; gap: .6rem 1.25rem; margin-bottom: 1rem; font-size: .78rem; }
.replay-legend > span { display: inline-flex; align-items: center; gap: .5rem; }
.replay-legend i { width: 18px; height: 3px; display: inline-block; border-radius: 2px; }
.replay-jump { margin-top: 1rem; }
.replay-jump select { max-width: min(100%,460px); }
.replay-inspector { scroll-margin-top: calc(var(--nav-h) + 85px); }
.replay-inspector h4 { margin: 1.25rem 0 .5rem; font-size: .87rem; }
.replay-inspector details { border-top: 1px solid var(--border); padding: 1rem 0 .2rem; margin-top: 1rem; }
.replay-inspector summary { cursor: pointer; font-size: .85rem; font-weight: 600; }
.replay-inspector .answer-reasoning { max-height: 340px; overflow: auto; font-size: .9rem; line-height: 1.8; }
.replay-inspector pre { white-space: pre-wrap; overflow-wrap: anywhere; max-height: 350px; overflow: auto; padding: 1rem; border-radius: 8px; background: var(--bg-2); font: .75rem/1.8 var(--font-mono); }
.replay-hash { display: block; overflow-wrap: anywhere; font-size: .65rem; color: var(--text-2); margin: .5rem 0; }
.replay-records { display: grid; gap: .5rem; margin-top: 1rem; }
.replay-record { display: grid; grid-template-columns: auto 1fr auto; gap: .85rem; align-items: center; width: 100%; text-align: left; padding: .9rem; border: 1px solid var(--border); border-radius: 9px; background: #fff; color: var(--text); font: .82rem/1.6 var(--font-body); cursor: pointer; }
.replay-record.on { border-color: var(--primary-dark); background: #f1f8f6; }
.replay-record small { display: block; color: var(--text-2); font: .72rem var(--font-mono); margin-top: .2rem; }
.replay-pager { display: flex; flex-wrap: wrap; gap: .8rem; align-items: center; justify-content: space-between; margin-top: 1rem; font-size: .75rem; color: var(--text-2); }
.replay-pager > div { display: flex; gap: .5rem; }
.replay-table { width: 100%; border-collapse: collapse; min-width: 650px; font-size: .75rem; }
.replay-table th, .replay-table td { padding: .85rem .7rem; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
.replay-table th { font-weight: 600; color: var(--text-2); }
.replay-table td { font-family: var(--font-mono); }
.replay-result-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 1rem; }
.replay-result-grid .panel { min-width: 0; }
.replay-result-grid dl > div { display: flex; gap: .75rem; justify-content: space-between; border-bottom: 1px solid var(--border); padding: .85rem 0; font-size: .8rem; }
.replay-result-grid dd { margin: 0; font-family: var(--font-mono); }
.replay-activity { height: 16px; background: #697687; border-radius: 8px; overflow: hidden; margin: 1.25rem 0; }
.replay-activity span { display: block; height: 100%; background: #2864aa; }
@media (max-width: 720px) {
  .replay-kpis { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .replay-result-grid { grid-template-columns: minmax(0,1fr); }
  .replay-tabs { position: static; }
  .replay-record { grid-template-columns: auto 1fr; }
  .replay-record .badge { grid-column: 2; justify-self: start; }
  .replay-toolbar { align-items: flex-start; }
}

/* Recorded examples and the infrastructure project detail page. */
.task-detail-card { display: flex; flex-direction: column; align-items: flex-start; text-align: left; font-family: var(--font-body); color: var(--text); cursor: pointer; }
.task-detail-card:hover { border-color: var(--primary-dark); }
.task-detail-card .demo-link { margin-top: 1.5rem; }
.scene-view-tabs { margin-bottom: 1.5rem; }
.case-controls { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 1rem; margin-bottom: 1rem; }
.case-kpis { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: .6rem; margin: 1.2rem 0; }
.case-kpis > div { border: 1px solid var(--border); border-radius: 8px; padding: .8rem; }
.case-kpis span { display: block; font-size: .7rem; color: var(--text-2); line-height: 1.5; }
.case-kpis strong { display: block; margin-top: .5rem; font: 600 1rem var(--font-mono); }
.case-chart-tabs { margin: 1rem 0; }
.case-chart-scroll { overflow: auto; width: 100%; min-width: 0; margin: 1rem 0; border: 1px solid var(--border); border-radius: 10px; }
.case-chart-scroll svg { display: block; width: 100%; min-width: 600px; }
.case-chart-scroll text { fill: var(--text-2); font: 12px var(--font-body); }
.case-chart-scroll [role=button] { cursor: pointer; }
.case-chart-scroll:focus-visible, .case-chart-scroll [role=button]:focus-visible { outline: 2px solid var(--primary-dark); outline-offset: 2px; }
.case-return-key { display: flex; flex-wrap: wrap; gap: 1rem; font-size: .8rem; }
.case-return-key span { display: inline-flex; align-items: center; gap: .4rem; }
.case-return-key i { width: 18px; height: 3px; }
.case-decision { margin: 1.5rem 0; border: 1px solid var(--border); border-radius: 12px; padding: 1.1rem; }
.case-decision h3 { font-size: 1rem; }
.case-decision h4 { margin: 1rem 0 .5rem; }
.case-decision ul { padding-left: 1.2rem; font: .8rem/1.8 var(--font-mono); overflow-wrap: anywhere; }
.case-reasoning { font-size: .88rem; line-height: 1.8; white-space: pre-wrap; max-height: 220px; overflow: auto; color: var(--text-2); }
#scene-example .note { color: var(--text-2); }
.qfz-hero .back-link { display: block; width: fit-content; margin-bottom: 1.5rem; text-align: left; }
.qfz-hero h1 { font-size: clamp(3rem,8vw,6rem); }
.qfz-steps { display: grid; gap: 1.5rem; }
.qfz-steps article > span { font: 600 .8rem var(--font-mono); color: var(--primary-dark); }
.qfz-steps h3 { margin-top: .5rem; }
.qfz-citation { white-space: pre-wrap; overflow-wrap: anywhere; max-height: 560px; overflow: auto; }
.qfz-doi { overflow-wrap: anywhere; }
@media (max-width: 600px) {
  .case-controls { grid-template-columns: minmax(0,1fr); }
  .case-kpis { grid-template-columns: repeat(2,minmax(0,1fr)); }
}

/* Scenario cards open compact editorial guides. */
.scenario-card { display: flex; flex-direction: column; align-items: flex-start; text-align: left; font-family: var(--font-body); color: var(--text); cursor: pointer; }
.scenario-card-title { display: block; font-family: var(--font-head); font-size: 1.2rem; font-weight: 700; line-height: 1.45; margin-bottom: 1rem; }
.scenario-card-body { display: block; flex: 1; color: var(--text-2); font-size: 1rem; line-height: 1.75; }
.scenario-card .demo-link { margin-top: 1.75rem; }
.scene-dialog { width: min(900px, calc(100% - 2rem)); max-height: 88dvh; border: 1px solid var(--border-2); border-radius: 22px; padding: 0; color: var(--text); background: #fff; box-shadow: 0 24px 90px rgba(20,30,50,.22); overscroll-behavior: contain; }
.scene-dialog::backdrop { background: rgba(20,28,43,.48); backdrop-filter: blur(4px); }
.scene-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; position: sticky; top: 0; z-index: 2; padding: 1.5rem 2rem; background: rgba(255,255,255,.97); border-bottom: 1px solid var(--border); }
.scene-header .eyebrow { color: var(--primary-dark); font-size: .76rem; font-weight: 700; letter-spacing: .06em; }
.scene-header h2 { font-size: clamp(1.3rem, 3vw, 1.8rem); margin: .25rem 0 0; }
.scene-header-actions { display: flex; align-items: center; gap: .65rem; flex: none; }
.scene-close { display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid var(--border-2); border-radius: 50%; background: var(--bg-2); color: var(--text-2); font: 1.4rem/1 var(--font-body); cursor: pointer; }
.scene-content { padding: 1.75rem 2rem 2rem; }
.scene-content h3 { font-size: 1rem; }
.scene-content p { font-size: .92rem; line-height: 1.8; }
.scene-goal p { margin-bottom: 0; }
.scene-figure { padding: 1rem 1.25rem; margin: 1.5rem 0; border: 1px solid var(--border); border-radius: 16px; background: linear-gradient(135deg, #f9fcfc, #f7f8fb); }
.scene-drawing { display: block; width: 100%; max-height: 260px; color: var(--muted); overflow: visible; }
.scene-axis { fill: none; stroke: #b2bac9; stroke-width: 2; }
.scene-zero { fill: none; stroke: #dbe0e8; stroke-width: 1.5; stroke-dasharray: 4 5; }
.scene-volatility, .scene-protected-line { fill: none; stroke: var(--primary-dark); stroke-width: 4; stroke-linecap: round; stroke-linejoin: round; }
.scene-event { stroke: var(--secondary); stroke-width: 2; stroke-dasharray: 4 5; }
.scene-hint { fill: none; stroke: var(--secondary); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.scene-node { fill: #fff; stroke: #cddfdb; stroke-width: 2; }
.scene-icon { fill: none; stroke: var(--primary-dark); stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.scene-loop { fill: none; stroke: #8aa5a0; stroke-width: 2; stroke-dasharray: 5 5; }
.scene-stock-line { fill: none; stroke: #a0aabc; stroke-width: 3; stroke-dasharray: 7 6; }
.scene-phase-labels { display: grid; grid-template-columns: repeat(3, 1fr); gap: .6rem; text-align: center; font-size: .82rem; font-weight: 600; line-height: 1.5; }
.scene-legend { display: flex; align-items: center; justify-content: center; gap: .5rem; margin-top: 1rem; font-size: .78rem; color: var(--text-2); }
.legend-line { display: inline-block; width: 24px; border-top: 3px solid var(--primary-dark); vertical-align: middle; flex: none; }
.legend-line.stock { border-color: #a0aabc; border-top-style: dashed; }
.scene-session { display: flex; align-items: center; gap: .75rem; margin-top: 1rem; color: var(--text-2); font-size: .76rem; }
.scene-session-line { flex: 1; height: 3px; background: linear-gradient(90deg, var(--primary), var(--secondary)); border-radius: 2px; }
.scene-payoff-axis { display: flex; justify-content: space-between; gap: 1rem; font-size: .75rem; color: var(--text-2); }
.scene-payoff-legend { flex-wrap: wrap; gap: .75rem 1.5rem; }
.scene-payoff-legend > span { display: inline-flex; align-items: center; gap: .5rem; }
.scene-figure figcaption { margin-top: 1rem; font-size: .82rem; color: var(--text-2); line-height: 1.65; }
.scene-figure .scene-schematic { text-align: center; font-size: .72rem; color: var(--muted); line-height: 1.5; margin: .5rem 0 0; }
.scene-explanation-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.scene-explanation { padding: 1.15rem; border: 1px solid var(--border); border-radius: 12px; }
.scene-explanation p { margin: 0; font-size: .88rem; }
.scene-explanation.challenge { grid-column: 1 / -1; background: rgba(229,168,0,.05); }
.scene-case-section { padding: 1.75rem 0 0; }
.scene-cases { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1rem; }
.scene-case { padding: 1rem; background: var(--bg-2); border: 1px solid var(--border); border-radius: 12px; }
.scene-case h4 { font-size: .95rem; margin-bottom: .5rem; }
.scene-case p { font-size: .85rem; }
.scene-case-focus { margin: 0; padding-top: .75rem; border-top: 1px solid var(--border); }
.scene-case-focus strong { color: var(--primary-dark); font-size: .78rem; }
@media (max-width: 600px) {
  .scene-dialog { width: calc(100% - 1rem); max-height: 92dvh; border-radius: 16px; }
  .scene-header { padding: 1rem; gap: .5rem; }
  .scene-header h2 { font-size: 1.15rem; }
  .scene-header-actions { gap: .4rem; }
  .scene-header .language-select { min-width: 66px; max-width: 76px; font-size: .75rem; }
  .scene-close { width: 30px; height: 30px; }
  .scene-content { padding: 1.25rem 1rem; }
  .scene-figure { padding: 1rem .5rem; }
  .scene-phase-labels { font-size: .72rem; gap: .35rem; }
  .scene-explanation-grid { grid-template-columns: 1fr; }
  .scene-cases { grid-template-columns: 1fr; }
  .scene-payoff-axis { font-size: .65rem; }
}