:root {
  --paper: #F5F2EB;
  --paper-deep: #EAE4D9;
  --ink: #17352C;
  --ink-soft: #2F6B58;
  --sage: #DCE7DE;
  --rust: #A4513A;
  --blue: #23303B;
  --muted: #64716A;
  --line: #C9CEC5;
  --white: #FFFDF8;
  --display: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --body: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  --utility: "Aptos", "Segoe UI", sans-serif;
  --max: 1280px;
  --muted-tint: #5B675F;
  --rust-tint: #9A4834;
}

.section-sage,
.project-card-visual,
.contact-choice[aria-pressed="true"],
.model-workbench .model-question,
.case-index-item:hover {
  --muted: var(--muted-tint);
  --rust: var(--rust-tint);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--blue);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.8;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
ul, ol { padding-left: 1.25rem; }
figure, blockquote, p { margin-top: 0; }
h1, h2, h3, h4 { margin: 0; color: var(--ink); font-family: var(--display); font-weight: 600; line-height: 1.3; }
h1 { font-size: clamp(44px, 4.25vw, 66px); letter-spacing: -0.035em; }
h2 { font-size: clamp(32px, 3vw, 44px); letter-spacing: -0.02em; }
h3 { font-size: 25px; }
p { margin-bottom: 1rem; }
::selection { background: var(--rust); color: var(--white); }
:where(a, button, input, textarea, select, summary):focus-visible {
  outline: 3px solid var(--rust);
  outline-offset: 4px;
}
.section-dark :where(a, button):focus-visible { outline-color: var(--white); }
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 18px;
  background: var(--ink);
  color: var(--white);
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }
.container { width: min(var(--max), calc(100% - 96px)); margin-inline: auto; }
.section { padding: 88px 0; }
.section-compact { padding: 56px 0; }
.section-dark { background: var(--ink); color: #E8EEE8; }
.section-dark h2, .section-dark h3, .section-dark h4 { color: var(--white); }
.section-sage { background: var(--sage); }
.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  color: var(--rust);
  font-family: var(--utility);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  line-height: 1.4;
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 32px; height: 2px; background: currentColor; }
.section-dark .eyebrow { color: #D9B49F; }
.lead { max-width: 780px; color: var(--muted); font-size: 20px; line-height: 1.85; }
.section-dark .lead { color: #C5D1C9; }
.section-heading { display: grid; grid-template-columns: 1.05fr .95fr; gap: 72px; align-items: end; margin-bottom: 56px; }
.section-heading p { margin: 0; color: var(--muted); }
.section-dark .section-heading p { color: #C5D1C9; }
.text-link { display: inline-flex; gap: 14px; align-items: center; min-height: 48px; color: var(--ink); font-weight: 700; }
.text-link::after { content: "↗"; color: var(--rust); font-family: var(--utility); }
.text-link:hover { color: var(--rust); }
.button-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 12px 24px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--white);
  font-weight: 700;
  line-height: 1.4;
}
.button:hover { background: var(--ink-soft); }
.button.secondary { background: transparent; color: var(--ink); }
.button.secondary:hover { background: var(--sage); }
.button.rust { border-color: var(--rust); background: var(--rust); }
.button.rust:hover { background: #873E2C; }

.site-header {
  width: min(1360px, calc(100% - 64px));
  min-height: 96px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 32px;
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; flex-direction: column; min-width: 186px; color: var(--ink); }
.brand-name { font-family: var(--display); font-size: 25px; font-weight: 700; letter-spacing: .08em; line-height: 1.25; }
.brand-role { margin-top: 5px; color: var(--muted); font-size: 11px; letter-spacing: .15em; }
.primary-nav { margin-left: auto; }
.primary-nav ul { display: flex; align-items: center; gap: 24px; margin: 0; padding: 0; list-style: none; }
.primary-nav a { position: relative; display: inline-flex; align-items: center; min-height: 48px; font-size: 14px; white-space: nowrap; }
.primary-nav a:hover, .primary-nav a[aria-current="page"] { color: var(--rust); }
.primary-nav a[aria-current="page"]::after { content: ""; position: absolute; right: 0; bottom: 5px; left: 0; height: 2px; background: var(--rust); }
.header-contact { min-height: 46px; padding: 10px 18px; border: 1px solid var(--ink); color: var(--ink); font-size: 14px; font-weight: 700; white-space: nowrap; }
.header-contact:hover { background: var(--ink); color: var(--white); }
.menu-toggle { display: none; }

.hero { display: grid; grid-template-columns: 1.08fr .92fr; gap: 80px; align-items: center; padding: 68px 0 72px; }
.hero-name { margin-bottom: 18px; color: var(--ink); font-family: var(--display); font-size: 27px; font-weight: 600; letter-spacing: .1em; }
.hero h1 { max-width: 690px; font-size: clamp(46px, 4.1vw, 62px); }
.hero h1 em { color: var(--rust); font-style: normal; }
.hero-intro { max-width: 620px; margin-top: 28px; color: var(--muted); font-size: 19px; line-height: 1.9; }
.hero-portrait { position: relative; margin: 0; padding: 14px 14px 0; background: var(--white); border: 1px solid var(--line); }
.hero-portrait::before { content: ""; position: absolute; right: -14px; bottom: 42px; left: 14px; height: 14px; background: var(--rust); z-index: -1; }
.hero-portrait img { width: 100%; aspect-ratio: 1; object-fit: cover; }
.hero-portrait figcaption { display: flex; justify-content: space-between; gap: 16px; padding: 15px 2px 16px; color: var(--muted); font-size: 12px; letter-spacing: .06em; }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.trust-item { padding: 30px 26px 30px 0; }
.trust-item + .trust-item { padding-left: 26px; border-left: 1px solid var(--line); }
.trust-item strong { display: block; margin-bottom: 8px; color: var(--ink); font-family: var(--display); font-size: 22px; line-height: 1.4; }
.trust-item:first-child strong { color: var(--rust); font-size: 36px; }
.trust-item span { color: var(--muted); font-size: 14px; line-height: 1.65; }
.three-perspectives { display: grid; grid-template-columns: repeat(3, 1fr); gap: 44px; }
.perspective { padding-top: 24px; border-top: 2px solid var(--ink); }
.perspective-label { display: block; margin-bottom: 22px; color: var(--rust); font-size: 13px; font-weight: 700; letter-spacing: .12em; }
.perspective h3 { margin-bottom: 16px; }
.perspective p { color: var(--muted); font-size: 16px; }
.capability-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 84px; }
.capability-list { margin: 0; padding: 0; list-style: none; }
.capability-list li { display: grid; grid-template-columns: 130px 1fr; gap: 22px; padding: 24px 0; border-bottom: 1px solid #4A6359; }
.capability-list li:first-child { padding-top: 0; }
.capability-list strong { color: #E7C4AE; font-family: var(--display); font-size: 20px; }
.capability-list span { color: #E8EEE8; }
.project-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.project-card { display: flex; flex-direction: column; border: 1px solid var(--line); background: var(--white); transition: transform 180ms ease, border-color 180ms ease; }
.project-card:hover { transform: translateY(-4px); border-color: var(--ink-soft); }
.project-card-visual { min-height: 250px; padding: 30px; background: var(--sage); border-bottom: 1px solid var(--line); }
.project-card:nth-child(2) .project-card-visual, .project-card:nth-child(4) .project-card-visual { background: var(--paper-deep); }
.project-card-body { display: flex; flex: 1; flex-direction: column; padding: 30px; }
.project-meta { display: flex; justify-content: space-between; gap: 16px; margin-bottom: 18px; color: var(--rust); font-size: 13px; font-weight: 700; }
.project-card h3 { margin-bottom: 12px; }
.project-card p { color: var(--muted); font-size: 16px; }
.project-card .text-link { margin-top: auto; align-self: flex-start; }
.career-strip { display: grid; grid-template-columns: .75fr 1.25fr; gap: 72px; }
.career-list { margin: 0; padding: 0; list-style: none; }
.career-list li { display: grid; grid-template-columns: 150px 1fr; gap: 24px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.career-list li:first-child { padding-top: 0; }
.career-list strong { color: var(--ink); }
.career-list span { color: var(--muted); }
.method-band { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; align-items: start; }
.method-samples { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.method-sample { padding: 24px 0; border-top: 1px solid var(--ink); }
.method-sample strong { display: block; margin-bottom: 8px; color: var(--ink); }
.method-sample span { color: var(--muted); font-size: 15px; }
.cta-grid { display: grid; grid-template-columns: repeat(2, 1fr); }
.cta-panel { display: flex; min-height: 280px; flex-direction: column; justify-content: space-between; padding: 42px; border: 1px solid var(--ink); }
.cta-panel + .cta-panel { border-left: 0; }
.cta-panel.primary { background: var(--ink); color: #E8EEE8; }
.cta-panel.primary h3 { color: var(--white); }
.cta-panel p { color: var(--muted); }
.cta-panel.primary p { color: #C5D1C9; }
.site-footer { padding: 40px 0 36px; border-top: 1px solid var(--line); }
.footer-inner { display: flex; align-items: flex-end; justify-content: space-between; gap: 48px; }
.footer-note { max-width: 560px; margin: 10px 0 0; color: var(--muted); font-size: 13px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; font-size: 13px; }
.footer-links a { min-height: 32px; }

/* Project and research diagrams */
.lattice { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; height: 100%; align-content: center; }
.lattice-column { display: flex; flex-direction: column; gap: 8px; }
.lattice-column strong { margin-bottom: 4px; color: var(--ink); font-size: 14px; text-align: center; }
.lattice-cell { height: 18px; border: 1px solid var(--ink-soft); background: var(--white); }
.lattice-cell.active { background: var(--ink-soft); }
.diagram-caption { margin: 18px 0 0; color: var(--muted); font-size: 12px; text-align: center; }
.research-path { display: flex; height: 100%; flex-direction: column; justify-content: center; gap: 12px; }
.research-step { display: grid; grid-template-columns: 32px 1fr; gap: 14px; align-items: center; padding: 10px 14px; border-left: 2px solid var(--ink-soft); background: var(--white); }
.research-step span { color: var(--rust); font-family: var(--utility); font-size: 12px; }
.research-step strong { color: var(--ink); font-size: 15px; }
.interview-map { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; align-content: center; height: 100%; }
.interview-topic { padding: 16px; border: 1px solid var(--ink-soft); background: var(--white); }
.interview-topic strong { display: block; color: var(--ink); }
.interview-topic span { color: var(--muted); font-size: 12px; }
.interview-topic:last-child { grid-column: 1 / -1; text-align: center; background: var(--ink); }
.interview-topic:last-child strong { color: var(--white); }
.interview-topic:last-child span { color: #C5D1C9; }
.business-compare { display: grid; grid-template-columns: 1fr 42px 1fr; gap: 10px; align-items: center; height: 100%; }
.business-side { padding: 22px 16px; border: 1px solid var(--ink-soft); background: var(--white); }
.business-side strong { display: block; margin-bottom: 10px; color: var(--ink); }
.business-side span { color: var(--muted); font-size: 13px; }
.business-arrow { color: var(--rust); font-family: var(--utility); font-size: 24px; text-align: center; }

.page-hero { padding: 72px 0 64px; border-bottom: 1px solid var(--line); }
.page-hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 80px; align-items: end; }
.page-hero h1 { max-width: 820px; font-size: clamp(44px, 4.4vw, 62px); }
.page-hero p { margin: 0; color: var(--muted); font-size: 19px; }
.page-kicker { margin-bottom: 16px; color: var(--rust); font-size: 14px; font-weight: 700; letter-spacing: .1em; }
.tab-shell { display: grid; grid-template-columns: 250px 1fr; gap: 64px; align-items: start; }
.tab-list { display: flex; flex-direction: column; gap: 0; margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.tab-list [role="tab"] { width: 100%; min-height: 54px; padding: 14px 4px; border: 0; border-bottom: 1px solid var(--line); background: transparent; color: var(--muted); text-align: left; }
.tab-list [role="tab"][aria-selected="true"] { color: var(--rust); font-weight: 700; }
.tab-list [role="tab"][aria-selected="true"]::before { content: "— "; }
.tab-panel { min-width: 0; }
.tab-panel[hidden] { display: none; }
.tab-panel h2 { margin-bottom: 20px; }
.tab-panel .lead { margin-bottom: 32px; font-size: 18px; }
.filter-status { min-height: 32px; margin-bottom: 20px; color: var(--muted); font-size: 14px; }
.project-records { margin-top: 64px; }
.project-records details { border-top: 1px solid var(--line); }
.project-records details:last-child { border-bottom: 1px solid var(--line); }
.project-records summary { padding: 22px 4px; color: var(--ink); cursor: pointer; font-family: var(--display); font-size: 22px; font-weight: 600; }
.project-records summary span { float: right; color: var(--muted); font-family: var(--body); font-size: 13px; font-weight: 400; }
.record-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 40px; margin: 0; padding: 0 0 24px; list-style: none; }
.record-list li { padding: 18px 4px; border-top: 1px solid #DDE0D9; }
.record-list strong { display: block; color: var(--ink); }
.record-list span { color: var(--muted); font-size: 14px; }
[hidden] { display: none !important; }

.visually-hidden { position: absolute !important; clip-path: inset(50%) !important; overflow: hidden !important; width: 1px !important; height: 1px !important; margin: -1px !important; padding: 0 !important; border: 0 !important; white-space: nowrap !important; }
.detail-two-col { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; margin: 36px 0; }
.detail-two-col h3 { margin-bottom: 16px; font-size: 21px; }
.detail-two-col ul { margin: 0; color: var(--muted); }
.detail-two-col li { margin-bottom: 10px; }
.related-case { display: grid; grid-template-columns: 120px 1fr auto; gap: 20px; align-items: center; padding: 24px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.related-case > span { color: var(--muted); font-size: 13px; }
.related-case strong { color: var(--ink); }
.process-list { margin: 32px 0; padding: 0; list-style: none; }
.process-list li { display: grid; grid-template-columns: 130px 1fr; gap: 24px; padding: 20px 0; border-top: 1px solid var(--line); }
.process-list strong { color: var(--ink); }
.process-list span { color: var(--muted); }
.selection-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 36px; }
.selection-grid > div { padding-top: 18px; border-top: 2px solid var(--ink); }
.selection-grid strong, .selection-grid span { display: block; }
.selection-grid strong { margin-bottom: 8px; color: var(--ink); font-family: var(--display); font-size: 21px; }
.selection-grid span { min-height: 52px; color: var(--rust); font-size: 13px; font-weight: 700; }
.selection-grid p { margin-top: 10px; color: var(--muted); font-size: 14px; }
.case-index { border-top: 1px solid var(--ink); }
.case-index-item { display: grid; grid-template-columns: .9fr 1.1fr; gap: 12px 48px; padding: 32px 24px; border: 0; border-bottom: 1px solid var(--line); background: transparent; }
.case-index-item .project-meta { grid-column: 1 / -1; margin: 0; }
.case-index-item h3 { font-size: 28px; }
.case-index-item p { margin: 0; }
.case-index-item .text-link { grid-column: 1 / -1; }
.case-index-item:hover { background: var(--sage); transform: none; }
.experience-list { border-top: 1px solid var(--ink); }
.experience-row { display: grid; grid-template-columns: .75fr 1.25fr; gap: 64px; padding: 32px 0; border-bottom: 1px solid var(--line); }
.experience-company span { display: block; margin-bottom: 8px; color: var(--muted); font-size: 13px; }
.experience-row strong { color: var(--rust); font-size: 19px; }
.experience-row p { margin-top: 10px; color: var(--muted); }
.industry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px 40px; }
.industry-grid > div { padding-top: 18px; border-top: 1px solid #4A6359; }
.industry-grid strong, .industry-grid span { display: block; }
.industry-grid strong { margin-bottom: 8px; color: var(--white); font-family: var(--display); font-size: 20px; }
.industry-grid span { color: #C5D1C9; font-size: 14px; }
.credential-list { padding-top: 4px; }
.credential-list p { padding: 20px 0; border-top: 1px solid var(--line); }
.credential-list strong { display: block; margin-bottom: 8px; color: var(--ink); }
.fine-print { color: var(--muted); font-size: 12px; }
.artifact-sheet { margin: 32px 0; padding: 36px; border: 1px solid var(--line); background: var(--white); }
.artifact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.artifact-grid span { display: block; margin-bottom: 12px; color: var(--rust); font-family: var(--utility); font-size: 12px; }
.artifact-grid strong { color: var(--ink); font-family: var(--display); font-size: 22px; }
.artifact-grid p { margin-top: 8px; color: var(--muted); font-size: 14px; }
.artifact-sheet .fine-print { margin: 28px 0 0; padding-top: 18px; border-top: 1px solid var(--line); }
.tool-lattice { min-height: 180px; }
.tool-notes { display: flex; justify-content: space-between; gap: 20px; align-items: baseline; margin-top: 24px; }
.tool-notes strong { color: var(--rust); font-family: var(--display); font-size: 26px; }
.tool-notes span { color: var(--muted); font-size: 13px; }
.course-outline { margin: 32px 0; border-top: 1px solid var(--ink); }
.course-outline > div { display: grid; grid-template-columns: 120px 1fr; gap: 8px 24px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.course-outline span { grid-row: 1 / 3; color: var(--rust); font-size: 13px; }
.course-outline strong { color: var(--ink); font-size: 20px; }
.course-outline p { margin: 0; color: var(--muted); }
.workflow { margin: 32px 0; border-left: 2px solid var(--ink-soft); }
.workflow > div { display: grid; grid-template-columns: 170px 1fr; gap: 24px; padding: 18px 24px; }
.workflow strong { color: var(--ink); }
.workflow span { color: var(--muted); }
.product-story { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 32px 0; }
.product-story > div { padding: 24px; border: 1px solid var(--line); background: var(--white); }
.product-story strong, .product-story span { display: block; }
.product-story strong { margin-bottom: 12px; color: var(--ink); }
.product-story span { color: var(--muted); font-size: 14px; }
.about-hero { display: grid; grid-template-columns: 1.1fr .9fr; gap: 100px; align-items: center; padding: 76px 0; }
.about-hero .lead { margin-top: 28px; }
.about-portrait { margin: 0; padding: 12px; border: 1px solid var(--line); background: var(--white); }
.about-portrait img { aspect-ratio: 4 / 3; object-fit: cover; object-position: center 28%; }
.about-portrait figcaption { padding: 12px 4px 2px; color: var(--muted); font-size: 12px; }
.about-chapter { display: grid; grid-template-columns: 220px 1fr; gap: 64px; }
.chapter-label { padding-top: 10px; color: var(--rust); font-size: 14px; font-weight: 700; letter-spacing: .1em; }
.prose { max-width: 760px; margin-top: 28px; color: var(--muted); font-size: 18px; }
.prose p { margin-bottom: 24px; }
.learning-list { margin-top: 32px; }
.learning-list > div { display: grid; grid-template-columns: 180px 1fr; gap: 24px; padding: 20px 0; border-top: 1px solid #B8C7BA; }
.learning-list strong { color: var(--ink); }
.learning-list span { color: var(--muted); }
.style-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.style-grid article { padding-top: 20px; border-top: 1px solid var(--ink); }
.style-grid article > span { color: var(--rust); font-size: 13px; }
.style-grid h3 { margin: 12px 0; font-size: 23px; }
.style-grid p { color: var(--muted); font-size: 15px; }
.contact-choice-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.contact-choice { min-height: 270px; padding: 32px; border: 1px solid var(--line); background: transparent; color: var(--blue); text-align: left; }
.contact-choice[aria-pressed="true"] { border-color: var(--ink); background: var(--sage); }
.contact-choice strong { display: block; margin-bottom: 16px; color: var(--ink); font-family: var(--display); font-size: 29px; }
.contact-choice p { color: var(--muted); }
.contact-choice > span:last-child { color: var(--rust); font-size: 13px; }
.contact-guide { margin-top: 48px; padding: 48px; border: 1px solid var(--ink); background: var(--white); }
.contact-guide h2 { margin-bottom: 16px; }
.guide-list { margin: 32px 0; padding: 0; list-style: none; }
.guide-list li { display: grid; grid-template-columns: 220px 1fr; gap: 24px; padding: 18px 0; border-top: 1px solid var(--line); }
.guide-list strong { color: var(--ink); }
.guide-list span { color: var(--muted); }
.contact-status { margin: 22px 0 0; padding: 18px; background: var(--sage); color: var(--ink); font-size: 14px; }
.breadcrumb { display: flex; gap: 12px; align-items: center; padding-top: 28px; color: var(--muted); font-size: 13px; }
.breadcrumb a:hover { color: var(--rust); }
.detail-hero { display: grid; grid-template-columns: 1.2fr .8fr; gap: 80px; align-items: end; padding: 52px 0 64px; border-bottom: 1px solid var(--line); }
.detail-hero h1 { font-size: clamp(42px, 3.8vw, 54px); }
.detail-hero .lead { margin-top: 24px; font-size: 18px; }
.detail-client { margin-bottom: 14px; color: var(--ink); font-family: var(--display); font-size: 24px; font-weight: 600; }
.project-facts { margin: 0; border-top: 2px solid var(--rust); }
.project-facts > div { display: grid; grid-template-columns: 92px 1fr; gap: 18px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.project-facts dt { color: var(--muted); font-size: 13px; }
.project-facts dd { margin: 0; color: var(--ink); font-weight: 700; }
.detail-layout { display: grid; grid-template-columns: 330px 1fr; gap: 80px; padding-bottom: 80px; }
.detail-aside { align-self: start; padding-top: 64px; }
.detail-aside h2 { margin-bottom: 22px; font-size: 32px; }
.detail-aside p { color: var(--muted); }
.detail-content { min-width: 0; }
.detail-section { padding: 56px 0; border-bottom: 1px solid var(--line); }
.detail-section h2 { margin-bottom: 24px; font-size: 34px; }
.detail-section > p { color: var(--muted); font-size: 18px; }
.action-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.action-grid > div { padding-top: 18px; border-top: 1px solid var(--ink-soft); }
.action-grid strong { color: var(--ink); font-size: 19px; }
.action-grid p { margin-top: 8px; color: var(--muted); font-size: 15px; }
.work-figure { margin: 32px 0 0; border: 1px solid var(--line); background: var(--white); }
.work-figure-heading { display: flex; justify-content: space-between; gap: 24px; align-items: start; padding: 24px; border-bottom: 1px solid var(--line); }
.work-figure-heading span { color: var(--muted); font-size: 12px; }
.work-figure-heading strong { display: block; margin-top: 8px; color: var(--ink); font-family: var(--display); font-size: 24px; }
.work-figure figcaption { padding: 18px 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.level-workbench { padding: 32px; }
.sequence-labels { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 14px; }
.sequence-labels span { padding: 10px; background: var(--ink); color: var(--white); text-align: center; font-size: 13px; }
.level-scale { display: grid; grid-template-columns: repeat(9, 1fr); gap: 8px; margin: 0; padding: 0; list-style: none; }
.level-scale li { padding: 9px 4px; border: 1px solid var(--ink-soft); color: var(--ink); font-family: var(--utility); font-size: 12px; text-align: center; }
.level-scale li:nth-child(3n) { background: var(--sage); }
.workbench-notes { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 20px; }
.workbench-notes span { color: var(--muted); font-size: 12px; text-align: center; }
.strategy-path { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; padding: 32px; }
.strategy-path > div { padding: 8px 20px; border-left: 1px solid var(--line); }
.strategy-path > div:first-child { border-left: 0; }
.strategy-path span { color: var(--rust); font-family: var(--utility); font-size: 12px; }
.strategy-path strong { display: block; margin: 12px 0; color: var(--ink); font-size: 18px; }
.strategy-path p { color: var(--muted); font-size: 13px; }
.interview-workbench { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; padding: 32px; }
.interview-workbench > div { padding: 20px; border: 1px solid var(--line); }
.interview-workbench strong, .interview-workbench span { display: block; }
.interview-workbench strong { margin-bottom: 12px; color: var(--ink); }
.interview-workbench span { color: var(--muted); font-size: 12px; }
.interview-workbench p { margin-top: 18px; color: var(--rust); font-size: 14px; }
.interview-workbench .interview-synthesis { grid-column: 1 / -1; background: var(--ink); }
.interview-synthesis strong { color: var(--white); }
.interview-synthesis span { color: #C5D1C9; }
.model-workbench { display: grid; grid-template-columns: 1fr .9fr 1fr; gap: 24px; align-items: center; padding: 32px; }
.model-workbench > div { padding: 24px; border: 1px solid var(--line); }
.model-workbench > div > span { color: var(--muted); font-size: 12px; }
.model-workbench > div > strong { display: block; margin: 12px 0; color: var(--ink); font-size: 20px; }
.model-workbench ul { padding-left: 18px; color: var(--muted); font-size: 14px; }
.model-workbench .model-question { border: 0; background: var(--sage); }
.model-workbench .model-question strong { color: var(--rust); line-height: 1.8; }
.detail-next { display: grid; grid-template-columns: 1.2fr .8fr; gap: 24px; margin-top: 48px; }
.detail-next a { padding: 24px; border: 1px solid var(--ink); }
.detail-next a:hover { background: var(--sage); }
.detail-next span, .detail-next strong { display: block; }
.detail-next span { margin-bottom: 8px; color: var(--muted); font-size: 12px; }
.detail-next strong { color: var(--ink); }

@media (prefers-reduced-motion: no-preference) {
  .hero-copy { animation: enter 450ms ease-out both; }
  .hero-portrait { animation: enter 520ms 60ms ease-out both; }
}
@keyframes enter { from { opacity: .01; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}