:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  color: #132622;
  background: #f3f0e8;
  font-synthesis: none;
  line-height: 1.65;
  --ink: #102622;
  --ink-2: #193a34;
  --paper: #f3f0e8;
  --paper-2: #ebe6da;
  --cream: #fffaf0;
  --mint: #7ce4ce;
  --lime: #d8ff72;
  --amber: #ffbf69;
  --red: #d95b4f;
  --line: rgba(16, 38, 34, .15);
  --muted: #687873;
  --shadow: 0 24px 80px rgba(11, 31, 27, .10);
  --serif: Georgia, "Noto Serif TC", "Songti TC", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--paper); }
a { color: inherit; }
button, input, select, code, pre { font: inherit; }
button, select { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
::selection { color: var(--ink); background: var(--lime); }

.skip-link { position: fixed; top: -100px; left: 20px; z-index: 200; background: var(--lime); padding: 10px 16px; border-radius: 0 0 8px 8px; font-weight: 800; }
.skip-link:focus { top: 0; }
.boot-screen { min-height: 100vh; display: grid; place-content: center; text-align: center; color: var(--muted); }
.brand-mark { margin: auto; width: 58px; height: 58px; display: grid; place-items: center; border-radius: 50%; background: var(--ink); color: var(--lime); font: 700 2rem var(--serif); }

.site-header { position: sticky; top: 0; z-index: 100; height: 76px; display: flex; align-items: center; justify-content: space-between; padding: 0 clamp(20px, 5vw, 72px); background: rgba(243, 240, 232, .91); border-bottom: 1px solid var(--line); backdrop-filter: blur(18px); }
.site-brand { display: inline-flex; gap: 11px; align-items: center; text-decoration: none; line-height: 1.1; }
.brand-symbol { width: 39px; height: 39px; display: grid; place-items: center; border-radius: 50%; background: var(--ink); color: var(--lime); font: 700 1.35rem var(--serif); }
.site-brand b { display: block; font-size: 1.03rem; letter-spacing: .13em; }
.site-brand small { display: block; margin-top: 4px; color: var(--muted); font-size: .68rem; letter-spacing: .06em; }
.primary-nav { display: flex; align-items: center; gap: clamp(11px, 2.1vw, 30px); font-size: .87rem; font-weight: 700; }
.primary-nav a { position: relative; text-decoration: none; white-space: nowrap; }
.primary-nav a:not(.nav-about)::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -8px; height: 2px; background: var(--ink); transition: right .2s ease; }
.primary-nav a:hover::after, .primary-nav a.active::after { right: 0; }
.nav-about { border: 1px solid var(--ink); border-radius: 999px; padding: 8px 15px; }
.nav-about:hover, .nav-about.active { color: var(--cream); background: var(--ink); }
.nav-toggle { display: none; border: 1px solid var(--line); border-radius: 999px; background: transparent; padding: 7px 13px; font-weight: 800; }

.kicker { margin: 0 0 12px; color: #467065; font-size: .7rem; font-weight: 900; letter-spacing: .19em; text-transform: uppercase; }
.kicker.light { color: var(--mint); }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; border-radius: 999px; padding: 0 22px; text-decoration: none; font-size: .9rem; font-weight: 850; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { color: var(--ink); background: var(--lime); }
.button.ghost { border: 1px solid rgba(255,255,255,.35); color: white; background: rgba(255,255,255,.04); }
.button.ink { color: white; background: var(--ink); }
.text-link { text-decoration: none; border-bottom: 1px solid var(--ink); font-weight: 800; }
.back-link { display: inline-block; margin-bottom: 36px; color: inherit; text-decoration-color: rgba(255,255,255,.4); text-underline-offset: 4px; font-size: .85rem; font-weight: 800; }

.home-hero { min-height: calc(100vh - 76px); display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(420px, .9fr); gap: 54px; align-items: center; padding: clamp(70px, 10vw, 130px) clamp(24px, 7vw, 110px); overflow: hidden; color: white; background: var(--ink); }
.hero-copy { position: relative; z-index: 2; max-width: 760px; }
.hero-copy h1 { margin: 0; font: 400 clamp(3.7rem, 8vw, 8.3rem)/.94 var(--serif); letter-spacing: -.055em; }
.hero-copy h1 em { color: var(--lime); font-style: italic; }
.hero-lead { max-width: 680px; margin: 32px 0; color: rgba(255,255,255,.74); font-size: clamp(1.05rem, 1.7vw, 1.35rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-graph { position: relative; aspect-ratio: 1; min-height: 430px; }
.graph-orbit { position: absolute; border: 1px solid rgba(124,228,206,.23); border-radius: 50%; }
.orbit-a { inset: 8%; }
.orbit-b { inset: 23%; border-style: dashed; }
.graph-orbit::before, .graph-orbit::after { content: ""; position: absolute; width: 7px; height: 7px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 18px var(--mint); }
.orbit-a::before { top: 13%; left: 13%; }.orbit-a::after { right: 8%; bottom: 24%; }
.orbit-b::before { right: 20%; top: 4%; }.orbit-b::after { left: 4%; bottom: 24%; }
.graph-center { position: absolute; inset: 38%; display: grid; place-content: center; text-align: center; border: 1px solid rgba(255,255,255,.3); border-radius: 50%; background: rgba(255,255,255,.06); box-shadow: 0 0 70px rgba(124,228,206,.18); }
.graph-center span { font: 500 clamp(2rem, 5vw, 4.4rem) var(--serif); }
.graph-center small { color: var(--mint); font-size: .72rem; }
.graph-node { position: absolute; min-width: 84px; text-align: center; text-decoration: none; transform: translate(-50%, -50%); }
.graph-node span { width: 70px; height: 70px; display: grid; place-items: center; margin: auto; border: 1px solid rgba(255,255,255,.32); border-radius: 50%; background: #173a33; font: 500 1.45rem var(--serif); box-shadow: 0 14px 40px rgba(0,0,0,.3); transition: border-color .2s, transform .2s; }
.graph-node:hover span { transform: scale(1.08); border-color: var(--lime); }
.graph-node small { display: block; margin-top: 7px; color: rgba(255,255,255,.65); }
.node-a { top: 9%; left: 48%; }.node-b { top: 33%; left: 10%; }.node-c { top: 76%; left: 20%; }.node-d { top: 87%; left: 68%; }.node-e { top: 35%; left: 90%; }
.node-e span { width: 88px; height: 88px; color: var(--ink); background: var(--lime); font-size: 1rem; }

.stats-band { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--line); background: var(--cream); }
.stat-card { min-height: 180px; padding: 32px clamp(20px, 4vw, 52px); border-right: 1px solid var(--line); }
.stat-card:last-child { border-right: 0; }
.stat-card strong { display: block; font: 500 clamp(2.8rem, 5vw, 5rem)/1 var(--serif); letter-spacing: -.04em; }
.stat-card span { display: block; margin-top: 14px; font-weight: 850; }
.stat-card small { color: var(--muted); }

.content-section, .page-shell { max-width: 1480px; margin: auto; padding: clamp(70px, 9vw, 130px) clamp(20px, 5vw, 72px); }
.section-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 70px; margin-bottom: 60px; }
.section-intro > .kicker { grid-column: 1 / -1; }
.section-intro > div { display: flex; align-items: flex-start; gap: 24px; }
.section-intro h1 { margin: 0; max-width: 800px; font: 500 clamp(2.6rem, 5vw, 5.5rem)/1.03 var(--serif); letter-spacing: -.045em; }
.section-intro > p:last-child { max-width: 610px; margin: 0; color: var(--muted); font-size: 1.05rem; }
.section-count { flex: none; border: 1px solid var(--line); border-radius: 999px; padding: 8px 13px; font-size: .72rem; font-weight: 900; white-space: nowrap; }
.portals-section { background: var(--paper); }
.portal-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.portal-card { min-height: 315px; display: flex; flex-direction: column; justify-content: space-between; padding: 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); text-decoration: none; transition: background .2s, transform .2s; }
.portal-card:hover { z-index: 2; color: white; background: var(--ink); transform: translateY(-4px); box-shadow: var(--shadow); }
.portal-number { color: var(--muted); font: italic 1.1rem var(--serif); }
.portal-card:hover .portal-number { color: var(--mint); }
.portal-card h3 { margin: 0 0 12px; font: 500 1.7rem var(--serif); }
.portal-card p { color: var(--muted); }
.portal-card:hover p { color: rgba(255,255,255,.7); }
.portal-meta { display: flex; justify-content: space-between; font-size: .76rem; font-weight: 900; letter-spacing: .05em; text-transform: uppercase; }
.portal-meta b { color: #4f6a63; font-size: 1.2rem; }.portal-card:hover .portal-meta b { color: var(--lime); }

.featured-section { max-width: none; color: white; background: #173a33; }
.featured-section > * { max-width: 1340px; margin-left: auto; margin-right: auto; }
.split-heading { display: flex; justify-content: space-between; align-items: end; margin-bottom: 36px; }
.split-heading h2 { margin: 0; font: 500 clamp(2.2rem, 4vw, 4.5rem)/1 var(--serif); }
.featured-section .text-link { border-color: rgba(255,255,255,.45); }
.featured-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
.feature-card { position: relative; min-height: 210px; padding: 24px; border: 1px solid rgba(255,255,255,.15); border-radius: 4px; color: white; text-decoration: none; background: rgba(255,255,255,.035); transition: transform .2s, border-color .2s; }
.feature-card:hover { transform: translateY(-5px); border-color: var(--mint); }
.feature-index { color: rgba(255,255,255,.45); font: italic .9rem var(--serif); }
.status-dot { position: absolute; top: 25px; right: 24px; width: 8px; height: 8px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 12px var(--lime); }
.feature-card h3 { margin: 36px 0 8px; font: 500 1.55rem var(--serif); }
.feature-card p { color: rgba(255,255,255,.6); font-size: .86rem; }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; }
.tag-row span { border: 1px solid currentColor; border-radius: 999px; padding: 3px 8px; color: inherit; opacity: .66; font-size: .68rem; }
.trust-statement { display: grid; grid-template-columns: 1fr 1fr auto; gap: 50px; align-items: end; padding: clamp(70px, 10vw, 140px) clamp(20px, 7vw, 110px); background: var(--lime); }
.trust-statement > div { position: relative; }
.trust-symbol { position: absolute; left: -14px; top: -58px; color: rgba(16,38,34,.16); font: 600 8rem var(--serif); }
.trust-statement h2 { position: relative; margin: 0; font: 500 clamp(2.4rem, 5vw, 5.5rem)/1.02 var(--serif); letter-spacing: -.04em; }
.trust-statement p { margin: 0; font-size: 1.05rem; }

.atlas-toolbar { display: grid; grid-template-columns: minmax(280px, 2fr) repeat(3, minmax(140px, 1fr)); border: 1px solid var(--line); background: var(--cream); }
.atlas-toolbar label { display: flex; flex-direction: column; justify-content: center; padding: 12px 18px; border-left: 1px solid var(--line); color: var(--muted); font-size: .65rem; font-weight: 900; letter-spacing: .06em; text-transform: uppercase; }
.atlas-toolbar .search-box { flex-direction: row; align-items: center; gap: 12px; border-left: 0; }
.search-box span { color: var(--ink); font-size: 1.7rem; }
.atlas-toolbar input, .atlas-toolbar select { width: 100%; border: 0; outline: 0; padding: 5px 0; color: var(--ink); background: transparent; font-size: .9rem; font-weight: 750; }
.result-line { margin: 24px 0 14px; color: var(--muted); font-size: .85rem; }
.result-line span { color: var(--ink); font-weight: 900; }
.atlas-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.atlas-card { min-height: 245px; display: flex; flex-direction: column; padding: 23px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); text-decoration: none; background: rgba(255,255,255,.16); transition: background .18s, color .18s, transform .18s; }
.atlas-card:hover { z-index: 2; color: white; background: var(--ink); transform: translateY(-3px); box-shadow: var(--shadow); }
.atlas-card.is-canonical { background: var(--cream); }
.atlas-card.is-canonical:hover { background: #173a33; }
.atlas-card-top { display: flex; align-items: center; justify-content: space-between; }
.group-code { color: var(--muted); font: italic .85rem var(--serif); }
.maturity, .status-badge { display: inline-flex; align-items: center; width: fit-content; border-radius: 999px; padding: 4px 9px; background: var(--paper-2); font-size: .66rem; font-weight: 900; }
.maturity.canonical_mko, .status-badge.passed, .status-badge.reviewed, .status-badge.active { color: #173a33; background: var(--mint); }
.maturity.atlas_seed, .status-badge.candidate, .status-badge.configured { color: #65400f; background: #ffdfac; }
.atlas-card:hover .maturity { color: var(--ink); }
.atlas-card h3 { margin: 38px 0 8px; font: 500 1.55rem var(--serif); }
.atlas-card p { flex: 1; color: var(--muted); font-size: .86rem; }
.atlas-card:hover p { color: rgba(255,255,255,.7); }
.atlas-card-meta { display: flex; justify-content: space-between; gap: 10px; color: var(--muted); font-size: .7rem; font-weight: 750; }
.atlas-card:hover .atlas-card-meta { color: rgba(255,255,255,.55); }

.detail-hero { padding: clamp(60px, 8vw, 110px) clamp(20px, 7vw, 110px); color: white; background: var(--ink); }
.detail-hero .kicker { color: var(--mint); }
.detail-title { display: flex; justify-content: space-between; align-items: end; gap: 24px; max-width: 1250px; }
.detail-title h1 { margin: 12px 0 0; font: 500 clamp(4rem, 9vw, 9rem)/.9 var(--serif); letter-spacing: -.055em; }
.detail-title code { color: rgba(255,255,255,.5); font-size: .76rem; }
.detail-hero > p:not(.kicker) { max-width: 720px; margin: 34px 0; color: rgba(255,255,255,.7); font-size: 1.2rem; }
.planned-notice { display: inline-block; border: 1px solid rgba(255,255,255,.26); border-radius: 999px; padding: 10px 16px; }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.detail-panel { padding: clamp(24px, 4vw, 48px); border: 1px solid var(--line); background: var(--cream); }
.detail-panel.full { grid-column: 1 / -1; }
.detail-panel h2 { margin: 0 0 24px; font: 500 clamp(2rem, 3.5vw, 3.5rem)/1.05 var(--serif); }
.detail-panel h3 { margin-top: 28px; font-size: .83rem; letter-spacing: .04em; text-transform: uppercase; }
.panel-note { max-width: 760px; color: var(--muted); }
.clean-list { margin: 0; }
.clean-list > div { display: grid; grid-template-columns: 150px 1fr; gap: 20px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.clean-list dt { color: var(--muted); font-size: .8rem; }
.clean-list dd { margin: 0; font-weight: 750; overflow-wrap: anywhere; }
.relation-links { display: flex; flex-wrap: wrap; gap: 8px; }
.relation-links a { border: 1px solid var(--line); padding: 8px 12px; text-decoration: none; font-weight: 750; }
.relation-links a:hover { color: white; background: var(--ink); }
.difficulty-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 30px; }
.difficulty-grid > div { display: grid; grid-template-columns: 1fr 24px 100px; gap: 12px; align-items: center; padding: 9px 0; border-bottom: 1px solid var(--line); }
.difficulty-grid span { color: var(--muted); font-size: .73rem; text-transform: capitalize; }
.difficulty-grid b { font-family: var(--serif); }
.difficulty-grid i { height: 4px; background: var(--paper-2); }
.difficulty-grid i span { display: block; height: 100%; background: var(--ink); }
.difficulty-grid i .level-0 { width: 0; }.difficulty-grid i .level-1 { width: 20%; }.difficulty-grid i .level-2 { width: 40%; }.difficulty-grid i .level-3 { width: 60%; }.difficulty-grid i .level-4 { width: 80%; }.difficulty-grid i .level-5 { width: 100%; }
.quiet { color: var(--muted); font-size: .86rem; }

.knowledge-summary { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.knowledge-summary span { border: 1px solid var(--line); border-radius: 999px; padding: 7px 12px; background: var(--cream); font-size: .75rem; font-weight: 850; }
.knowledge-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
.knowledge-card { min-height: 330px; display: flex; flex-direction: column; padding: 28px; border: 1px solid var(--line); color: var(--ink); text-decoration: none; background: var(--cream); transition: transform .2s, box-shadow .2s; }
.knowledge-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.knowledge-card > div:first-child { display: flex; justify-content: space-between; }
.type-pill, .version-pill { font-size: .67rem; font-weight: 900; letter-spacing: .06em; text-transform: uppercase; }
.type-pill { color: #276b5c; }.version-pill { color: var(--muted); }
.knowledge-card h2 { margin: 50px 0 6px; font: 500 2.2rem var(--serif); }
.knowledge-card > code { color: var(--muted); font-size: .72rem; }
.knowledge-card .tag-row { margin-top: 24px; }
.knowledge-card footer { display: flex; justify-content: space-between; margin-top: auto; padding-top: 22px; border-top: 1px solid var(--line); font-size: .76rem; }

.object-hero { padding: clamp(55px, 7vw, 100px) clamp(20px, 7vw, 110px) 48px; color: white; background: var(--ink); }
.object-hero-grid { display: grid; grid-template-columns: 1fr minmax(360px, .7fr); gap: 60px; align-items: center; }
.object-hero h1 { margin: 5px 0 20px; font: 500 clamp(4rem, 8vw, 8rem)/.92 var(--serif); letter-spacing: -.05em; }
.object-hero-grid > div:first-child > p:last-child { max-width: 720px; color: rgba(255,255,255,.68); font-size: 1.15rem; }
.formula-stage { min-height: 250px; display: grid; place-content: center; padding: 30px; border: 1px solid rgba(255,255,255,.2); text-align: center; background: rgba(255,255,255,.035); }
.mathml { overflow-x: auto; font-size: clamp(2rem, 4vw, 4rem); }
.formula-stage > code { margin-top: 20px; color: var(--lime); font-size: 1rem; }
.formula-stage > small { display: block; margin-top: 12px; color: rgba(255,255,255,.38); font-size: .65rem; overflow-wrap: anywhere; }
.object-status { display: flex; flex-wrap: wrap; gap: 8px; max-width: 1380px; margin-top: 40px; }
.object-status span { border: 1px solid rgba(255,255,255,.2); border-radius: 999px; padding: 6px 11px; color: rgba(255,255,255,.68); font-size: .7rem; }
.object-layout { max-width: 1480px; display: grid; grid-template-columns: 275px minmax(0, 1fr); gap: 50px; margin: auto; padding: 55px clamp(20px, 5vw, 72px) 110px; }
.object-sidebar { position: sticky; top: 108px; align-self: start; }
.object-tabs { display: grid; }
.object-tabs button { border: 0; border-bottom: 1px solid var(--line); padding: 14px 0; text-align: left; color: var(--muted); background: transparent; cursor: pointer; font-size: .83rem; }
.object-tabs button.active { color: var(--ink); font-weight: 900; }
.object-tabs button.active::after { content: " →"; color: #2b8270; }
.sidebar-meta { margin-top: 40px; }
.dependency-stack { display: grid; gap: 8px; margin-top: 10px; }
.dependency-stack a { padding: 10px; border: 1px solid var(--line); text-decoration: none; font-size: .78rem; font-weight: 800; }
.dependency-stack a span { display: block; margin-top: 5px; color: var(--muted); font-weight: 400; }
.object-panel { display: none; min-height: 600px; }
.object-panel.active { display: block; }
.object-panel > h2 { max-width: 880px; margin: 0 0 36px; font: 500 clamp(2.5rem, 5vw, 5rem)/1 var(--serif); letter-spacing: -.04em; }
.object-panel > h3 { margin-top: 48px; font-size: .9rem; letter-spacing: .06em; text-transform: uppercase; }
.large-copy { max-width: 860px; font: 400 clamp(1.15rem, 2vw, 1.5rem)/1.8 var(--serif); }
.assumption-list { list-style: none; padding: 0; }
.assumption-list li { display: grid; grid-template-columns: 42px 1fr; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.assumption-list span { color: #2d7868; font-weight: 900; }
.symbol-table { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.symbol-table > div { display: grid; grid-template-columns: 74px 1fr; align-items: center; min-height: 90px; padding: 15px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.symbol-table code { text-align: center; font: 500 1.7rem var(--serif); }
.symbol-table b, .symbol-table small { display: block; }.symbol-table small { color: var(--muted); }
.boundary-callout { max-width: 860px; margin-top: 40px; padding: 24px; border-left: 5px solid #2d7868; background: #dff4ea; }
.boundary-callout.amber { border-color: #b26d19; background: #fff0d4; }
.boundary-callout p { margin-bottom: 0; }
.producer-grid, .evidence-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 26px 0 45px; }
.producer-grid article, .evidence-card { padding: 22px; border: 1px solid var(--line); background: var(--cream); }
.producer-grid h3 { margin: 20px 0 0; font: 500 1.3rem var(--serif); }.producer-grid p { margin: 4px 0; color: var(--muted); }.producer-grid code { font-size: .7rem; overflow-wrap: anywhere; }
.evidence-card header { display: flex; gap: 8px; align-items: center; color: var(--muted); font-size: .7rem; }
.evidence-card h3 { margin: 24px 0 10px; font: 500 1.45rem var(--serif); }
.evidence-card p { color: var(--muted); }
.evidence-card details { border-top: 1px solid var(--line); margin-top: 18px; padding-top: 13px; }
.evidence-card summary { cursor: pointer; font-weight: 800; font-size: .78rem; }
.digest { display: block; margin-top: 12px; overflow-wrap: anywhere; font-size: .65rem; }
.micro-list > div { display: grid; grid-template-columns: 90px 1fr; padding: 7px 0; border-bottom: 1px solid var(--line); font-size: .76rem; }
.micro-list dt { color: var(--muted); }.micro-list dd { margin: 0; overflow-wrap: anywhere; }
pre { max-height: 650px; overflow: auto; padding: 24px; color: #d9f7ee; background: #0d211e; font-size: .76rem; line-height: 1.55; }
.empty-state { grid-column: 1 / -1; padding: 50px; border: 1px dashed var(--line); text-align: center; color: var(--muted); }
.empty-state b { color: var(--ink); font: 500 1.6rem var(--serif); }

.path-list { display: grid; gap: 22px; }
.path-card { display: grid; grid-template-columns: minmax(280px, .75fr) 1.25fr; border: 1px solid var(--line); background: var(--cream); }
.path-card > header { padding: clamp(26px, 4vw, 52px); border-right: 1px solid var(--line); }
.path-card > header > div:first-child { display: flex; align-items: center; justify-content: space-between; }
.path-number { font: italic 1rem var(--serif); color: var(--muted); }
.path-card h2 { margin: 45px 0 15px; font: 500 clamp(2rem, 3vw, 3.1rem)/1.08 var(--serif); }
.path-card header p { color: var(--muted); }
.path-steps { padding: 30px clamp(22px, 4vw, 48px); }
.path-steps a { position: relative; display: grid; grid-template-columns: 52px 1fr; gap: 16px; padding: 16px 0; text-decoration: none; }
.path-steps a:not(:last-child)::after { content: ""; position: absolute; left: 21px; top: 54px; bottom: -10px; width: 1px; background: var(--line); }
.path-steps a > span { z-index: 1; width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; color: white; background: var(--ink); font: 500 1rem var(--serif); }
.path-steps a:hover > span { color: var(--ink); background: var(--lime); }
.path-steps b, .path-steps small { display: block; }.path-steps small { margin-top: 4px; color: var(--muted); }

.domain-cloud { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.domain-cloud article { min-height: 230px; padding: 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.domain-cloud article.is-empty { background: repeating-linear-gradient(-45deg, transparent, transparent 10px, rgba(16,38,34,.025) 10px, rgba(16,38,34,.025) 20px); }
.domain-cloud article > div { display: flex; justify-content: space-between; color: var(--muted); }.domain-cloud article > div > span { font: italic .8rem var(--serif); }.domain-cloud article > div > small { font-size: .65rem; font-weight: 850; }
.domain-cloud h3 { margin: 35px 0 8px; font: 500 1.25rem var(--serif); }.domain-cloud p { color: var(--muted); font-size: .78rem; }
.method-heading { margin: 100px 0 35px; }.method-heading h2 { margin: 0; font: 500 clamp(2.7rem, 5vw, 5rem)/1 var(--serif); }
.method-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.method-card { min-height: 300px; padding: 24px; border: 1px solid var(--line); background: var(--cream); }
.method-card header { display: flex; justify-content: space-between; color: var(--muted); font-size: .67rem; font-weight: 800; }
.method-card h3 { margin: 50px 0 10px; font: 500 1.65rem var(--serif); }.method-card > p { color: var(--muted); }
.method-card details { margin-top: 30px; padding-top: 15px; border-top: 1px solid var(--line); font-size: .78rem; }
.method-card summary { cursor: pointer; font-weight: 900; }.method-card details > b { display: block; margin-top: 14px; }

.practice-hero, .about-hero { padding: clamp(70px, 10vw, 140px) clamp(20px, 7vw, 110px); color: white; background: var(--ink); }
.practice-hero { display: grid; grid-template-columns: 1.2fr .8fr; gap: 80px; align-items: end; }
.practice-hero h1, .about-hero h1 { margin: 0; max-width: 1100px; font: 500 clamp(3.5rem, 7vw, 7.7rem)/.96 var(--serif); letter-spacing: -.05em; }
.practice-hero > div:first-child > p:last-child, .about-hero > p:last-child { max-width: 760px; margin: 30px 0 0; color: rgba(255,255,255,.68); font-size: 1.15rem; }
.factory-meter { padding: 32px; border: 1px solid rgba(255,255,255,.2); }
.factory-meter span, .factory-meter small { display: block; color: rgba(255,255,255,.6); }.factory-meter strong { font: 500 clamp(4rem, 8vw, 8rem)/1 var(--serif); }
.factory-meter progress { width: 100%; height: 8px; display: block; margin-top: 25px; border: 0; background: rgba(255,255,255,.14); appearance: none; }
.factory-meter progress::-webkit-progress-bar { background: rgba(255,255,255,.14); }.factory-meter progress::-webkit-progress-value { background: var(--lime); }.factory-meter progress::-moz-progress-bar { background: var(--lime); }
.practice-layout { display: grid; grid-template-columns: 1.1fr .9fr; gap: 18px; }
.factory-steps { list-style: none; padding: 0; }.factory-steps li { display: grid; grid-template-columns: 45px 1fr; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }.factory-steps li > span { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; color: white; background: var(--ink); }.factory-steps b { font-size: .95rem; }.factory-steps p { margin: 3px 0 0; color: var(--muted); font-size: .82rem; }
.batch-list > div { display: grid; grid-template-columns: 1fr auto; padding: 13px 0; border-bottom: 1px solid var(--line); }.batch-list small { grid-column: 1 / -1; color: var(--muted); }

.runtime-flow { border-top: 1px solid var(--line); }
.runtime-flow article { display: grid; grid-template-columns: 100px 1fr; gap: 28px; padding: 28px 0; border-bottom: 1px solid var(--line); }
.runtime-flow article > span { color: #297160; font: italic 1.4rem var(--serif); }.runtime-flow h2 { margin: 0 0 5px; font: 500 2rem var(--serif); }.runtime-flow p { max-width: 730px; margin: 0; color: var(--muted); }
.role-section { margin-top: 120px; }.role-section > h2 { margin: 0 0 40px; font: 500 clamp(2.6rem, 5vw, 5rem)/1 var(--serif); }
.role-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.role-grid article { min-height: 300px; display: flex; flex-direction: column; padding: 28px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }.role-grid article > span { color: var(--muted); font: italic 1rem var(--serif); }.role-grid h3 { margin: 55px 0 10px; font: 500 1.8rem var(--serif); }.role-grid p { color: var(--muted); }.role-grid small { margin-top: auto; font-weight: 900; }
.principle-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; margin-top: 90px; background: var(--line); border: 1px solid var(--line); }.principle-grid article { display: grid; grid-template-columns: 1fr auto 1fr; gap: 20px; align-items: center; min-height: 120px; padding: 25px; text-align: center; background: var(--cream); }.principle-grid span { color: var(--red); font: 600 2rem var(--serif); }

.loading-state, .error-state { min-height: 70vh; display: grid; place-content: center; justify-items: center; padding: 60px 20px; text-align: center; }
.loading-state > span { width: 36px; height: 36px; border: 3px solid var(--line); border-top-color: var(--ink); border-radius: 50%; animation: spin .8s linear infinite; }
.error-state h1 { font: 500 clamp(2.5rem, 5vw, 5rem) var(--serif); }
@keyframes spin { to { transform: rotate(360deg); } }

.site-footer { display: grid; grid-template-columns: 1fr auto; gap: 35px 70px; padding: 55px clamp(20px, 5vw, 72px); border-top: 1px solid var(--line); background: var(--cream); }
.footer-brand .brand-symbol { width: 34px; height: 34px; }
.site-footer > div:first-child > p { max-width: 550px; color: var(--muted); font-size: .82rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; align-items: center; font-size: .8rem; font-weight: 800; }.footer-links a { text-underline-offset: 4px; }
.footer-meta { grid-column: 1 / -1; margin: 0; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: .7rem; }

@media (max-width: 1120px) {
  .home-hero { grid-template-columns: 1fr; }.hero-copy { padding-top: 20px; }.hero-graph { max-width: 650px; width: 100%; margin: auto; }
  .atlas-grid, .domain-cloud { grid-template-columns: repeat(3, 1fr); }
  .atlas-toolbar { grid-template-columns: 1.5fr 1fr; }.atlas-toolbar label:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }.atlas-toolbar label:nth-child(4) { border-top: 1px solid var(--line); }
  .trust-statement { grid-template-columns: 1fr 1fr; }.trust-statement .button { grid-column: 2; justify-self: start; }
}

@media (max-width: 820px) {
  .site-header { height: 68px; }.nav-toggle { display: block; }.primary-nav { position: fixed; top: 68px; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 10px 20px 24px; border-bottom: 1px solid var(--line); background: var(--paper); box-shadow: var(--shadow); }.primary-nav.open { display: flex; }.primary-nav a { padding: 12px 0; border-bottom: 1px solid var(--line); }.nav-about { margin-top: 10px; text-align: center; }.primary-nav a::after { display: none; }
  .home-hero { min-height: auto; padding-top: 80px; }.hero-copy h1 { font-size: clamp(3.4rem, 15vw, 6rem); }.hero-graph { min-height: 360px; }
  .stats-band { grid-template-columns: repeat(2, 1fr); }.stat-card:nth-child(2) { border-right: 0; }.stat-card { min-height: 150px; border-bottom: 1px solid var(--line); }
  .section-intro { grid-template-columns: 1fr; }.section-intro > .kicker { grid-column: auto; }.section-intro > div { flex-wrap: wrap; }
  .portal-grid, .featured-strip, .knowledge-grid, .method-grid, .role-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-statement, .practice-hero, .practice-layout { grid-template-columns: 1fr; }.trust-statement .button { grid-column: auto; }
  .atlas-grid, .domain-cloud { grid-template-columns: repeat(2, 1fr); }
  .detail-title { align-items: start; flex-direction: column; }.detail-title code { order: -1; }.detail-grid { grid-template-columns: 1fr; }.detail-panel.full { grid-column: auto; }.difficulty-grid { grid-template-columns: 1fr; }
  .object-hero-grid, .object-layout { grid-template-columns: 1fr; }.object-sidebar { position: static; }.object-tabs { grid-template-columns: repeat(2, 1fr); gap: 5px; }.object-tabs button { border: 1px solid var(--line); padding: 10px; }.sidebar-meta { margin: 25px 0; }.producer-grid, .evidence-grid { grid-template-columns: 1fr; }
  .path-card { grid-template-columns: 1fr; }.path-card > header { border-right: 0; border-bottom: 1px solid var(--line); }
  .site-footer { grid-template-columns: 1fr; }.footer-meta { grid-column: auto; }
}

@media (max-width: 560px) {
  .site-brand small { display: none; }
  .hero-graph { min-height: 315px; }.graph-node span { width: 54px; height: 54px; font-size: 1.1rem; }.node-e span { width: 68px; height: 68px; font-size: .8rem; }.graph-node small { font-size: .62rem; }
  .stats-band, .portal-grid, .featured-strip, .atlas-grid, .knowledge-grid, .domain-cloud, .method-grid, .role-grid, .principle-grid { grid-template-columns: 1fr; }
  .stat-card { border-right: 0; }.portal-card { min-height: 255px; }.atlas-toolbar { grid-template-columns: 1fr; }.atlas-toolbar label { border-left: 0; border-top: 1px solid var(--line); }.atlas-toolbar label:nth-child(2) { border-top: 1px solid var(--line); }
  .atlas-card { min-height: 220px; }.clean-list > div { grid-template-columns: 1fr; gap: 2px; }.difficulty-grid > div { grid-template-columns: minmax(0, 1fr) 20px 70px; }
  .object-tabs { grid-template-columns: 1fr; }.symbol-table { grid-template-columns: 1fr; }.object-hero-grid { gap: 30px; }.formula-stage { min-height: 190px; }.object-hero h1 { font-size: 3.7rem; }
  .principle-grid article { grid-template-columns: 1fr; gap: 2px; }.runtime-flow article { grid-template-columns: 55px 1fr; }.role-grid article { min-height: 250px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}