:root {
  --bg: #f2f4f2;
  --paper: #fbfcfa;
  --paper-2: #ffffff;
  --ink: #141816;
  --ink-2: #28302c;
  --muted: #68716c;
  --faint: #969f9a;
  --line: #d8ddd9;
  --line-dark: #aeb7b1;
  --teal: #1f6259;
  --teal-soft: #dfece8;
  --blue: #405c72;
  --blue-soft: #e2e9ee;
  --gold: #9a712f;
  --gold-soft: #f1e9d8;
  --plum: #6d536c;
  --plum-soft: #ece4ec;
  --rust: #8b5b45;
  --rust-soft: #f0e5df;
  --dark: #17201c;
  --dark-2: #202b26;
  --max: 1180px;
  --serif: "EB Garamond", Georgia, "Times New Roman", serif;
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --shadow-sm: 0 2px 8px rgba(20, 24, 22, .06);
  --shadow-md: 0 14px 42px rgba(20, 24, 22, .09);
  --shadow-lg: 0 30px 80px rgba(20, 24, 22, .13);
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-xl: 40px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; overflow-x: hidden; }
body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button, summary { font: inherit; }
img, svg { display: block; max-width: 100%; }
ul, ol { list-style: none; }
::selection { background: var(--teal-soft); color: var(--ink); }

.page-width { width: min(calc(100% - 64px), var(--max)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }
.skip-link { position: fixed; z-index: 9999; left: 16px; top: 12px; padding: 10px 14px; background: var(--ink); color: #fff; transform: translateY(-180%); border-radius: 8px; }
.skip-link:focus { transform: none; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 88%, transparent);
  backdrop-filter: blur(18px) saturate(1.25);
  -webkit-backdrop-filter: blur(18px) saturate(1.25);
}
.nav-shell {
  width: min(calc(100% - 64px), var(--max));
  margin-inline: auto;
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand { display: inline-flex; align-items: center; gap: 13px; min-width: max-content; }
.brand-mark { position: relative; width: 33px; height: 31px; display: inline-block; }
.brand-mark i { position: absolute; width: 15px; height: 15px; border: 1.5px solid var(--ink); border-radius: 50%; background: var(--bg); }
.brand-mark i:nth-child(1) { left: 9px; top: 0; }
.brand-mark i:nth-child(2) { left: 0; bottom: 0; }
.brand-mark i:nth-child(3) { right: 0; bottom: 0; }
.brand-copy { display: flex; align-items: baseline; gap: 12px; }
.brand-copy strong { font-family: var(--serif); font-size: 23px; line-height: 1; font-weight: 500; letter-spacing: .005em; }
.brand-copy small { padding-left: 12px; border-left: 1px solid var(--line-dark); color: var(--faint); font-size: 10px; font-weight: 600; line-height: 1; letter-spacing: .15em; text-transform: uppercase; }
.primary-nav { display: flex; align-items: center; gap: 2px; }
.nav-link, .nav-dropdown > summary {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 0 14px;
  color: var(--muted);
  border-radius: 9px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background .16s ease, color .16s ease;
}
.nav-link:hover, .nav-link:focus-visible, .nav-dropdown > summary:hover, .nav-dropdown > summary:focus-visible,
.nav-link.is-active, .nav-dropdown.is-active > summary { color: var(--ink); background: rgba(20, 24, 22, .055); outline: none; }
.nav-dropdown { position: relative; }
.nav-dropdown > summary { list-style: none; }
.nav-dropdown > summary::-webkit-details-marker { display: none; }
.nav-dropdown > summary svg { width: 10px; height: 6px; overflow: visible; }
.nav-dropdown > summary path { fill: none; stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; transition: transform .18s ease; transform-origin: center; }
.nav-dropdown[open] > summary path { transform: rotate(180deg); }
.dropdown-panel {
  position: absolute;
  top: calc(100% + 12px);
  right: -18px;
  width: 310px;
  padding: 10px;
  background: rgba(255,255,255,.97);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow-lg);
  transform-origin: top right;
  animation: dropdown-in .16s ease both;
}
@keyframes dropdown-in { from { opacity: 0; transform: translateY(-5px) scale(.98); } to { opacity: 1; transform: none; } }
.dropdown-link { display: grid; grid-template-columns: 28px 1fr; align-items: center; gap: 10px; min-height: 46px; padding: 0 12px; border-radius: 11px; color: var(--ink-2); font-size: 14px; }
.dropdown-link span { color: var(--faint); font-family: var(--serif); font-style: italic; }
.dropdown-link:hover, .dropdown-link:focus-visible, .dropdown-link.is-active { background: var(--bg); color: var(--teal); outline: none; }
.menu-toggle { display: none; width: 42px; height: 42px; border: 0; background: transparent; border-radius: 9px; align-items: center; justify-content: center; flex-direction: column; gap: 4px; cursor: pointer; }
.menu-toggle span:not(.sr-only) { width: 20px; height: 1.5px; background: var(--ink); transition: transform .2s ease, opacity .2s ease; }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* Shared typography and controls */
.eyebrow { display: flex; align-items: center; gap: 12px; color: var(--teal); font-size: 11px; font-weight: 600; letter-spacing: .145em; text-transform: uppercase; }
.eyebrow > span { width: 31px; height: 1.5px; background: currentColor; }
.section-kicker { color: var(--teal); font-size: 11px; font-weight: 650; letter-spacing: .15em; text-transform: uppercase; margin-bottom: 14px; }
.section-kicker.light { color: #a8c8bf; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 22px; border-radius: 999px; font-size: 13px; font-weight: 600; letter-spacing: .01em; transition: transform .17s ease, box-shadow .17s ease, background .17s ease, color .17s ease, border-color .17s ease; }
.button:hover { transform: translateY(-1px); }
.button-dark { background: var(--ink); color: #fff; box-shadow: var(--shadow-sm); }
.button-dark:hover { box-shadow: var(--shadow-md); }
.button-outline { border: 1px solid var(--line-dark); color: var(--ink); background: transparent; }
.button-outline:hover { border-color: var(--ink); background: var(--ink); color: #fff; }
.button-light { background: #fff; color: var(--dark); }
.button-light:hover { box-shadow: 0 12px 34px rgba(0,0,0,.18); }
.text-link { display: inline-flex; align-items: center; gap: 8px; color: var(--ink-2); font-size: 13px; font-weight: 600; }
.text-link span { transition: transform .16s ease; }
.text-link:hover { color: var(--teal); }
.text-link:hover span { transform: translateX(4px); }

/* Home */
.home-hero { background: var(--paper-2); border-bottom: 1px solid var(--line); overflow: hidden; }
.home-hero-grid { min-height: 670px; padding: 92px 0 80px; display: grid; grid-template-columns: minmax(0, 1.06fr) minmax(410px, .94fr); gap: 62px; align-items: center; }
.home-hero h1, .page-hero h1, .framework-hero h1, .not-found h1 { font-family: var(--serif); font-weight: 400; letter-spacing: -.045em; line-height: .96; }
.home-hero h1 { margin: 25px 0 14px; font-size: clamp(70px, 9vw, 118px); }
.hero-deck { font-family: var(--serif); font-size: clamp(24px, 3.1vw, 36px); line-height: 1.18; color: var(--muted); font-style: italic; max-width: 700px; }
.hero-abstract { margin-top: 29px; padding-top: 26px; border-top: 1px solid var(--line); max-width: 690px; color: var(--ink-2); font-size: 17px; line-height: 1.76; }
.hero-actions { margin-top: 31px; display: flex; align-items: center; gap: 25px; flex-wrap: wrap; }
.home-hero-visual { position: relative; min-height: 480px; display: grid; place-items: center; }
.home-hero-visual::before { content: ""; position: absolute; width: 420px; height: 420px; border-radius: 50%; background: radial-gradient(circle, rgba(31,98,89,.10), rgba(31,98,89,0) 68%); filter: blur(4px); }
.orientation-svg { position: relative; z-index: 1; width: 100%; max-width: 520px; }
.orientation-svg .orb { fill: none; stroke: #cad6d1; stroke-width: 1; }
.orientation-svg .orb-b { stroke: #9eb7ae; stroke-dasharray: 2 7; }
.orientation-svg .orbit { fill: none; stroke: rgba(31,98,89,.38); stroke-width: 1.2; }
.orientation-svg .orbit-two { stroke: rgba(154,113,47,.32); }
.orientation-svg .map-node circle { fill: var(--paper-2); stroke: var(--ink); stroke-width: 1.5; }
.orientation-svg .map-node text { font-family: var(--sans); font-size: 10px; font-weight: 600; letter-spacing: .16em; text-anchor: middle; fill: var(--muted); }
.orientation-svg .map-center circle { fill: var(--dark); }
.orientation-svg .map-center text { text-anchor: middle; font-family: var(--sans); font-size: 11px; font-weight: 600; letter-spacing: .13em; fill: #fff; }
.orientation-svg .map-center .small { font-family: var(--serif); font-size: 13px; font-style: italic; letter-spacing: 0; fill: #abc1b9; }
.visual-caption { position: relative; z-index: 2; margin-top: -25px; color: var(--faint); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; }
.frameworks-section { padding: 105px 0 112px; }
.section-intro { max-width: 790px; margin-bottom: 45px; }
.section-intro.compact { margin-bottom: 34px; }
.section-intro h2, .home-books-copy h2, .two-column-copy h2, .sticky-heading h2, .relation-grid h2, .author-copy h2, .book-group-heading h2, .section-intro.inverse h2 {
  font-family: var(--serif); font-weight: 400; font-size: clamp(38px, 5vw, 56px); line-height: 1.06; letter-spacing: -.035em;
}
.section-intro > p:last-child { margin-top: 18px; max-width: 700px; color: var(--muted); font-size: 17px; }
.framework-bento { display: grid; grid-template-columns: repeat(12, minmax(0,1fr)); gap: 20px; }
.framework-card { --accent: var(--teal); --accent-soft: var(--teal-soft); position: relative; min-height: 390px; padding: 31px; overflow: hidden; background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius-lg); display: flex; flex-direction: column; box-shadow: var(--shadow-sm); transition: transform .24s ease, box-shadow .24s ease, border-color .24s ease; grid-column: span 4; }
.framework-card--lead { grid-column: span 8; min-height: 420px; }
.framework-card--wide { grid-column: span 8; min-height: 350px; }
.framework-card:nth-child(4) { grid-column: span 4; }
.framework-card::after { content: ""; position: absolute; right: -80px; bottom: -110px; width: 290px; height: 290px; border: 1px solid color-mix(in srgb, var(--accent) 27%, transparent); border-radius: 50%; box-shadow: 0 0 0 35px color-mix(in srgb, var(--accent-soft) 33%, transparent), 0 0 0 70px color-mix(in srgb, var(--accent-soft) 17%, transparent); pointer-events: none; }
.framework-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.framework-card-top { display: flex; justify-content: space-between; align-items: center; position: relative; z-index: 1; }
.framework-number { font-family: var(--serif); color: var(--accent); font-size: 14px; font-style: italic; }
.framework-arrow { width: 36px; height: 36px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; transition: transform .2s ease, background .2s ease, color .2s ease; }
.framework-card:hover .framework-arrow { transform: rotate(6deg); background: var(--accent); color: #fff; border-color: var(--accent); }
.framework-card-body { position: relative; z-index: 1; margin-top: auto; max-width: 560px; }
.framework-question { color: var(--accent); font-size: 11px !important; font-weight: 650; letter-spacing: .115em; text-transform: uppercase; margin-bottom: 10px; }
.framework-card h3 { font-family: var(--serif); font-size: clamp(30px, 3.2vw, 43px); line-height: 1.03; letter-spacing: -.03em; font-weight: 400; margin-bottom: 15px; }
.framework-card-body > p:last-child { max-width: 560px; color: var(--muted); font-size: 15.5px; line-height: 1.72; }
.framework-chips { position: relative; z-index: 1; margin-top: 24px; display: flex; flex-wrap: wrap; gap: 7px; }
.framework-chips span { padding: 5px 10px; border-radius: 999px; background: var(--accent-soft); color: color-mix(in srgb, var(--accent) 82%, var(--ink)); font-size: 10px; font-weight: 650; letter-spacing: .08em; text-transform: uppercase; }
.accent-teal { --accent: var(--teal); --accent-soft: var(--teal-soft); }
.accent-blue { --accent: var(--blue); --accent-soft: var(--blue-soft); }
.accent-gold { --accent: var(--gold); --accent-soft: var(--gold-soft); }
.accent-plum { --accent: var(--plum); --accent-soft: var(--plum-soft); }
.accent-rust { --accent: var(--rust); --accent-soft: var(--rust-soft); }
.orientation-statement { background: var(--dark); color: #fff; padding: 92px 0 88px; }
.orientation-grid { display: grid; grid-template-columns: .36fr 1.35fr; gap: 45px 75px; align-items: start; }
.orientation-grid blockquote { font-family: var(--serif); font-size: clamp(31px, 4.5vw, 50px); line-height: 1.15; letter-spacing: -.025em; color: #f4f7f5; }
.orientation-keys { grid-column: 2; display: flex; gap: 9px; flex-wrap: wrap; padding-top: 13px; border-top: 1px solid rgba(255,255,255,.14); }
.orientation-keys span { color: rgba(255,255,255,.64); font-size: 11px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; }
.orientation-keys span:not(:last-child)::after { content: "·"; margin-left: 9px; color: #709389; }
.home-books { padding: 100px 0 110px; background: var(--paper-2); }
.home-books-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 85px; align-items: center; }
.book-stack { position: relative; min-height: 440px; }
.book-stack img { position: absolute; width: 230px; border-radius: 5px; box-shadow: 0 22px 50px rgba(20,24,22,.16); border: 1px solid var(--line); }
.book-stack img:nth-child(1) { left: 0; top: 65px; transform: rotate(-8deg); }
.book-stack img:nth-child(2) { left: 145px; top: 0; z-index: 2; }
.book-stack img:nth-child(3) { left: 295px; top: 75px; transform: rotate(8deg); }
.home-books-copy p:not(.section-kicker) { color: var(--muted); font-size: 17px; margin: 22px 0 30px; max-width: 620px; }

/* Framework pages */
.framework-hero { --accent: var(--teal); --accent-soft: var(--teal-soft); background: var(--paper-2); border-bottom: 1px solid var(--line); overflow: hidden; }
.framework-hero-grid { min-height: 650px; padding: 83px 0 72px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(380px, .72fr); gap: 78px; align-items: center; }
.framework-hero h1 { margin: 24px 0 14px; max-width: 730px; font-size: clamp(59px, 7vw, 93px); }
.framework-hero .eyebrow { color: var(--accent); }
.question-panel { margin-top: 32px; max-width: 590px; padding: 18px 21px; background: var(--accent-soft); border-left: 3px solid var(--accent); border-radius: 0 12px 12px 0; }
.question-panel span { display: block; color: var(--accent); font-size: 10px; font-weight: 650; letter-spacing: .13em; text-transform: uppercase; }
.question-panel strong { display: block; margin-top: 4px; font-family: var(--serif); font-size: 21px; font-weight: 500; line-height: 1.3; }
.featured-book { position: relative; display: grid; grid-template-columns: 150px 1fr; gap: 22px; align-items: center; padding: 24px; background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.featured-book::before { content: ""; position: absolute; width: 180px; height: 180px; right: -70px; top: -70px; border-radius: 50%; background: var(--accent-soft); opacity: .55; }
.featured-book img { position: relative; z-index: 1; width: 150px; border: 1px solid var(--line); border-radius: 4px; box-shadow: var(--shadow-md); }
.featured-book > div { position: relative; z-index: 1; }
.featured-book > div > span { color: var(--accent); font-size: 10px; font-weight: 650; letter-spacing: .13em; text-transform: uppercase; }
.featured-book h2 { margin-top: 8px; font-family: var(--serif); font-size: 23px; line-height: 1.08; font-weight: 500; }
.featured-book p { margin-top: 7px; color: var(--muted); font-family: var(--serif); font-size: 15px; font-style: italic; line-height: 1.35; }
.featured-book small { display: block; margin-top: 13px; color: var(--faint); font-size: 10px; letter-spacing: .06em; text-transform: uppercase; }
.featured-book a { display: inline-flex; gap: 7px; align-items: center; margin-top: 14px; color: var(--accent); font-size: 12px; font-weight: 600; }
.content-section { padding: 100px 0; border-bottom: 1px solid var(--line); }
.dark-section { padding: 100px 0; background: var(--dark); color: #fff; }
.two-column-copy { display: grid; grid-template-columns: minmax(280px,.8fr) minmax(0,1.2fr); gap: 85px; align-items: start; }
.two-column-copy .prose p { color: var(--muted); font-size: 17px; line-height: 1.82; }
.dark-section .prose p { color: rgba(255,255,255,.67); }
.prose p + p { margin-top: 19px; }
.prose .text-link { margin-top: 24px; color: #fff; }
.split-layout { display: grid; grid-template-columns: minmax(270px,.58fr) minmax(0,1.42fr); gap: 90px; align-items: start; }
.sticky-heading { position: sticky; top: 110px; }
.sticky-heading > p:last-child { margin-top: 18px; color: var(--muted); }
.principle-band { padding: 57px 0; background: #e7ece8; border-bottom: 1px solid var(--line); }
.principle-band .page-width { display: grid; grid-template-columns: 190px 1fr; gap: 50px; align-items: start; }
.principle-label { color: var(--teal); font-size: 10px; font-weight: 650; letter-spacing: .14em; text-transform: uppercase; padding-top: 8px; }
.principle-text { font-family: var(--serif); font-size: clamp(25px, 3.2vw, 38px); line-height: 1.24; letter-spacing: -.015em; }
.related-section { padding: 100px 0 110px; }
.related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.related-card { --accent: var(--teal); --accent-soft: var(--teal-soft); position: relative; min-height: 230px; padding: 24px; background: var(--paper-2); border: 1px solid var(--line); border-radius: 20px; overflow: hidden; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }
.related-card::after { content: ""; position: absolute; right: -42px; bottom: -55px; width: 125px; height: 125px; border-radius: 50%; background: var(--accent-soft); }
.related-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); }
.related-card > span { color: var(--accent); font-family: var(--serif); font-size: 13px; font-style: italic; }
.related-card h3 { position: relative; z-index: 1; margin-top: 47px; font-family: var(--serif); font-size: 25px; line-height: 1.05; font-weight: 500; }
.related-card p { position: relative; z-index: 1; margin-top: 9px; color: var(--muted); font-size: 13px; line-height: 1.55; }
.related-card b { position: absolute; z-index: 2; right: 20px; top: 20px; font-weight: 400; color: var(--accent); }

/* Triadic page */
.triad-columns { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.triad-panel { padding: 31px 29px 28px; background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.panel-index { color: var(--teal); font-size: 10px; font-weight: 650; letter-spacing: .12em; text-transform: uppercase; }
.triad-panel h3 { margin: 11px 0 21px; font-family: var(--serif); font-size: 30px; line-height: 1.08; font-weight: 500; }
.triad-panel li { padding: 15px 0; border-top: 1px solid var(--line); }
.triad-panel li strong { display: block; font-size: 14px; }
.triad-panel li small { display: block; color: var(--muted); font-size: 12px; line-height: 1.5; margin-top: 3px; }
.step-list { border-top: 1px solid var(--line); }
.step-list li { display: grid; grid-template-columns: 52px 1fr; gap: 24px; padding: 25px 0; border-bottom: 1px solid var(--line); }
.step-list > li > span { color: var(--teal); font-family: var(--serif); font-size: 16px; font-style: italic; }
.step-list h3 { font-family: var(--serif); font-size: 25px; line-height: 1.16; font-weight: 500; }
.step-list p { margin-top: 5px; color: var(--muted); font-size: 14px; }

/* Ecosystems */
.order-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.order-card { min-height: 410px; display: flex; flex-direction: column; padding: 30px; background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius-lg); }
.order-card > span { color: var(--blue); font-family: var(--serif); font-style: italic; }
.order-card h3 { margin-top: 40px; font-family: var(--serif); font-size: 31px; line-height: 1.05; font-weight: 500; }
.order-card > strong { margin-top: 8px; color: var(--blue); font-size: 10px; letter-spacing: .14em; text-transform: uppercase; }
.order-card p { margin-top: 18px; color: var(--muted); font-size: 14.5px; line-height: 1.74; }
.order-card small { margin-top: auto; padding-top: 19px; border-top: 1px solid var(--line); color: var(--ink-2); font-family: var(--serif); font-size: 16px; font-style: italic; line-height: 1.42; }
.inverse { color: #fff; }
.definition-stack { display: grid; gap: 13px; }
.definition-card { padding: 24px 26px; border: 1px solid rgba(255,255,255,.13); background: rgba(255,255,255,.04); border-radius: 18px; }
.definition-card span { color: #9fbdb5; font-size: 10px; font-weight: 650; letter-spacing: .13em; text-transform: uppercase; }
.definition-card h3 { margin-top: 7px; font-family: var(--serif); font-size: 24px; line-height: 1.13; font-weight: 500; }
.definition-card p { margin-top: 8px; color: rgba(255,255,255,.61); font-size: 14px; }
.diagnostic-path { margin-top: 65px; padding: 24px 28px; display: flex; align-items: center; justify-content: center; gap: 15px; flex-wrap: wrap; background: var(--paper-2); border: 1px solid var(--line); border-radius: 18px; }
.diagnostic-path span { font-size: 12px; font-weight: 600; }
.diagnostic-path i { color: var(--faint); font-style: normal; }

/* UOA */
.fleet-figure { position: relative; margin-top: 70px; padding: 45px 45px 33px; background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius-xl); overflow: hidden; }
.fleet-figure::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 35px 35px; opacity: .25; }
.fleet-command, .fleet-units, .fleet-line, .fleet-figure > p { position: relative; z-index: 1; }
.fleet-command { width: min(430px,100%); margin: 0 auto; padding: 18px 22px; text-align: center; background: var(--dark); color: #fff; border-radius: 16px; box-shadow: var(--shadow-md); }
.fleet-command span { display: block; font-family: var(--serif); font-size: 22px; }
.fleet-command strong { display: block; margin-top: 2px; color: rgba(255,255,255,.58); font-size: 9px; letter-spacing: .13em; text-transform: uppercase; }
.fleet-line { width: 1px; height: 45px; margin: 0 auto; background: var(--line-dark); }
.fleet-line::after { content: ""; position: absolute; left: 12%; right: 12%; bottom: 0; height: 1px; background: var(--line-dark); }
.fleet-units { display: grid; grid-template-columns: repeat(4,1fr); gap: 17px; }
.fleet-units > div { padding: 20px 15px; text-align: center; background: var(--bg); border: 1px solid var(--line); border-radius: 15px; }
.fleet-units b { display: block; font-family: var(--serif); font-size: 20px; font-weight: 500; }
.fleet-units small { color: var(--gold); font-size: 9px; font-weight: 650; letter-spacing: .12em; text-transform: uppercase; }
.fleet-figure > p { margin: 29px auto 0; max-width: 670px; text-align: center; color: var(--muted); font-size: 13px; }
.commitment-grid { display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid rgba(255,255,255,.14); border-left: 1px solid rgba(255,255,255,.14); }
.commitment-grid article { min-height: 245px; padding: 28px; border-right: 1px solid rgba(255,255,255,.14); border-bottom: 1px solid rgba(255,255,255,.14); }
.commitment-grid span { color: #a7c5bc; font-family: var(--serif); font-style: italic; }
.commitment-grid h3 { margin-top: 42px; font-family: var(--serif); font-size: 26px; line-height: 1.08; font-weight: 500; }
.commitment-grid p { margin-top: 12px; color: rgba(255,255,255,.61); font-size: 13.5px; line-height: 1.65; }
.comparison-cards { display: grid; grid-template-columns: repeat(2,1fr); gap: 18px; }
.comparison-card { min-height: 310px; padding: 28px; background: var(--paper-2); border: 1px solid var(--line); border-radius: 22px; display: flex; flex-direction: column; }
.comparison-card > span { color: var(--gold); font-size: 10px; font-weight: 650; letter-spacing: .13em; text-transform: uppercase; }
.comparison-card h3 { margin-top: 40px; font-family: var(--serif); font-size: 29px; line-height: 1.12; font-weight: 500; }
.comparison-card p { margin-top: 13px; color: var(--muted); font-size: 14px; }
.comparison-card a { margin-top: auto; color: var(--gold); font-size: 12px; font-weight: 600; }

/* PDD */
.construct-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 15px; }
.construct-card { min-height: 235px; padding: 25px; background: var(--paper-2); border: 1px solid var(--line); border-radius: 20px; transition: transform .2s ease, box-shadow .2s ease; }
.construct-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.construct-card span { color: var(--plum); font-family: var(--serif); font-size: 13px; font-style: italic; }
.construct-card h3 { margin-top: 36px; font-family: var(--serif); font-size: 28px; line-height: 1.05; font-weight: 500; }
.construct-card p { margin-top: 11px; color: var(--muted); font-size: 13px; line-height: 1.62; }
.plane-stack { display: grid; gap: 15px; }
.plane-card { padding: 25px 27px; display: grid; grid-template-columns: 100px 1fr; gap: 6px 24px; background: var(--paper-2); border: 1px solid var(--line); border-radius: 19px; }
.plane-card > span { grid-row: 1 / span 2; color: var(--plum); font-size: 10px; font-weight: 650; letter-spacing: .13em; text-transform: uppercase; padding-top: 6px; }
.plane-card h3 { font-family: var(--serif); font-size: 24px; line-height: 1.1; font-weight: 500; }
.plane-card p { color: var(--muted); font-size: 13.5px; }
.relation-band { padding: 80px 0; background: var(--plum); color: #fff; }
.relation-grid { display: grid; grid-template-columns: 1fr 1fr auto; gap: 45px; align-items: center; }
.relation-grid .section-kicker { color: #d9c6d8; }
.relation-grid p { color: rgba(255,255,255,.68); font-size: 15px; }

/* Metaphoric Modeling */
.method-path { border-top: 1px solid var(--line); }
.method-step { display: grid; grid-template-columns: 74px 1fr; gap: 25px; padding: 23px 0; border-bottom: 1px solid var(--line); }
.method-step > span { width: 45px; height: 45px; display: grid; place-items: center; border-radius: 50%; background: var(--rust-soft); color: var(--rust); font-family: var(--serif); font-style: italic; }
.method-step h3 { font-family: var(--serif); font-size: 26px; line-height: 1.1; font-weight: 500; }
.method-step p { margin-top: 5px; color: var(--muted); font-size: 14px; }
.cycle-note { margin-top: 25px; display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 13px; }
.cycle-note > span { color: var(--rust); font-size: 25px; }
.dimension-cloud { display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; }
.dimension-cloud span { min-height: 84px; display: flex; align-items: center; padding: 0 22px; background: var(--paper-2); border: 1px solid var(--line); border-radius: 17px; font-family: var(--serif); font-size: 24px; }
.fleet-lineage { padding: 95px 0; background: var(--rust-soft); border-bottom: 1px solid var(--line); }

/* Books */
.page-hero { background: var(--paper-2); border-bottom: 1px solid var(--line); }
.page-hero-grid { min-height: 530px; padding: 85px 0 72px; display: grid; grid-template-columns: 1.25fr .75fr; gap: 85px; align-items: center; }
.page-hero h1 { margin: 24px 0 14px; font-size: clamp(66px, 8vw, 105px); }
.library-mark { justify-self: end; width: 260px; height: 260px; display: flex; align-items: center; justify-content: center; flex-direction: column; border: 1px solid var(--line-dark); border-radius: 50%; background: var(--bg); }
.library-mark span { font-family: var(--serif); font-size: 88px; line-height: .8; }
.library-mark strong { margin-top: 15px; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; }
.library-mark p { color: var(--faint); font-size: 12px; }
.books-page { padding: 100px 0 120px; }
.book-group + .book-group { margin-top: 118px; padding-top: 100px; border-top: 1px solid var(--line); }
.book-group-heading { display: grid; grid-template-columns: 210px 1fr 1fr; gap: 38px; align-items: start; margin-bottom: 42px; }
.book-group-heading h2 { font-size: 41px; }
.book-group-heading > p:last-child { color: var(--muted); font-size: 14px; }
.book-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 21px; }
.book-card { min-height: 395px; display: grid; grid-template-columns: 190px 1fr; gap: 28px; padding: 24px; background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.book-cover { align-self: stretch; display: grid; place-items: center; padding: 14px; background: var(--bg); border-radius: 14px; overflow: hidden; }
.book-cover img { max-height: 300px; width: auto; border: 1px solid var(--line); box-shadow: 0 12px 24px rgba(20,24,22,.13); }
.book-details { display: flex; flex-direction: column; padding: 4px 0; }
.book-meta { color: var(--teal); font-size: 9.5px; font-weight: 650; letter-spacing: .12em; text-transform: uppercase; }
.book-details h3 { margin-top: 10px; font-family: var(--serif); font-size: 29px; line-height: 1.05; font-weight: 500; }
.book-subtitle { margin-top: 7px; color: var(--muted); font-family: var(--serif); font-size: 15px; font-style: italic; line-height: 1.34; }
.book-author { margin-top: 11px; color: var(--faint); font-size: 10px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; }
.book-description { margin-top: 17px; color: var(--muted); font-size: 13px; line-height: 1.65; }
.book-details > a { margin-top: auto; padding-top: 17px; color: var(--teal); font-size: 12px; font-weight: 600; }
.book-details > a span { margin-left: 5px; }

/* About */
.about-symbol { justify-self: end; }
.symbol-ring { position: relative; width: 320px; height: 320px; border-radius: 50%; border: 1px solid var(--line-dark); }
.symbol-ring::before, .symbol-ring::after { content: ""; position: absolute; inset: 55px; border: 1px solid var(--line); border-radius: 50%; }
.symbol-ring::after { inset: 110px; background: var(--dark); border: 0; }
.symbol-ring span { position: absolute; padding: 5px 9px; background: var(--paper-2); color: var(--muted); font-size: 9px; font-weight: 650; letter-spacing: .1em; text-transform: uppercase; }
.symbol-ring span:nth-child(1) { top: -14px; left: 50%; transform: translateX(-50%); }
.symbol-ring span:nth-child(2) { top: 90px; right: -38px; }
.symbol-ring span:nth-child(3) { bottom: 18px; right: 10px; }
.symbol-ring span:nth-child(4) { bottom: 18px; left: 10px; }
.symbol-ring span:nth-child(5) { top: 90px; left: -33px; }
.about-commitments article { min-height: 225px; }
.author-grid { display: grid; grid-template-columns: .42fr 1.18fr; gap: 75px; align-items: start; }
.author-monogram { min-height: 430px; display: grid; place-items: center; background: var(--dark); border-radius: var(--radius-xl); overflow: hidden; position: relative; }
.author-monogram::before, .author-monogram::after { content: ""; position: absolute; width: 350px; height: 350px; border: 1px solid rgba(255,255,255,.12); border-radius: 50%; }
.author-monogram::after { width: 210px; height: 210px; }
.author-monogram span { position: relative; z-index: 1; color: #fff; font-family: var(--serif); font-size: 100px; letter-spacing: -.05em; }
.author-copy > p:not(.section-kicker) { margin-top: 18px; max-width: 690px; color: var(--muted); font-size: 16px; }
.author-copy .button { margin-top: 27px; }
.lineage-section { padding: 100px 0 120px; background: var(--paper-2); border-top: 1px solid var(--line); }
.lineage-track { display: grid; grid-template-columns: 1fr 60px 1fr 60px 1fr; align-items: center; gap: 16px; }
.lineage-track > div { min-height: 180px; padding: 24px; background: var(--bg); border: 1px solid var(--line); border-radius: 19px; }
.lineage-track span { color: var(--teal); font-size: 10px; font-weight: 650; letter-spacing: .12em; text-transform: uppercase; }
.lineage-track strong { display: block; margin-top: 35px; font-family: var(--serif); font-size: 22px; line-height: 1.2; font-weight: 500; }
.lineage-track i { height: 1px; background: var(--line-dark); position: relative; }
.lineage-track i::after { content: "→"; position: absolute; right: -5px; top: 50%; transform: translateY(-54%); color: var(--line-dark); background: var(--paper-2); }

/* 404 */
.not-found { min-height: 70vh; display: grid; align-items: center; padding: 100px 0; }
.not-found h1 { max-width: 850px; font-size: clamp(52px, 7vw, 90px); }
.not-found p:not(.section-kicker) { margin-top: 24px; max-width: 600px; color: var(--muted); font-size: 17px; }
.not-found .button { margin-top: 30px; }

/* Footer */
.site-footer { padding: 60px 0 65px; background: var(--bg); border-top: 1px solid var(--line); }
.footer-grid { width: min(calc(100% - 64px), var(--max)); margin-inline: auto; display: grid; grid-template-columns: 1.6fr 1fr .65fr; gap: 70px; }
.footer-brand { font-family: var(--serif); font-size: 24px; font-weight: 500; }
.footer-orientation p { margin-top: 10px; max-width: 440px; color: var(--muted); font-size: 13px; }
.footer-orientation > span { display: block; margin-top: 22px; color: var(--faint); font-size: 10px; letter-spacing: .07em; text-transform: uppercase; }
.footer-column { display: flex; flex-direction: column; gap: 7px; }
.footer-column h2 { margin-bottom: 6px; color: var(--faint); font-size: 9px; letter-spacing: .14em; text-transform: uppercase; }
.footer-column a { color: var(--muted); font-size: 12px; }
.footer-column a:hover { color: var(--teal); }

/* Reveal */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

/* Responsive */
@media (max-width: 1060px) {
  .home-hero-grid, .framework-hero-grid { grid-template-columns: 1fr; min-height: 0; }
  .home-hero-visual { min-height: 420px; max-width: 620px; margin-inline: auto; width: 100%; }
  .framework-hero-grid { gap: 45px; }
  .featured-book { max-width: 620px; }
  .framework-card { grid-column: span 6; }
  .framework-card--lead, .framework-card--wide { grid-column: span 12; }
  .framework-card:nth-child(4) { grid-column: span 6; }
  .related-grid { grid-template-columns: repeat(2,1fr); }
  .home-books-grid { grid-template-columns: 1fr; }
  .book-stack { max-width: 590px; width: 100%; }
  .book-group-heading { grid-template-columns: 170px 1fr; }
  .book-group-heading > p:last-child { grid-column: 2; }
  .book-grid { grid-template-columns: 1fr; }
  .relation-grid { grid-template-columns: 1fr 1fr; }
  .relation-grid .button { grid-column: 2; justify-self: start; }
  .page-hero-grid { grid-template-columns: 1fr .45fr; gap: 50px; }
}

@media (max-width: 820px) {
  .page-width, .nav-shell, .footer-grid { width: min(calc(100% - 40px), var(--max)); }
  .nav-shell { min-height: 64px; }
  .brand-copy small { display: none; }
  .menu-toggle { display: inline-flex; }
  .primary-nav { position: fixed; top: 64px; left: 0; right: 0; max-height: calc(100vh - 64px); overflow: auto; padding: 18px 20px 28px; background: rgba(248,250,248,.98); border-bottom: 1px solid var(--line); box-shadow: var(--shadow-md); display: none; flex-direction: column; align-items: stretch; gap: 4px; }
  .primary-nav.is-open { display: flex; }
  .nav-link, .nav-dropdown > summary { min-height: 48px; justify-content: space-between; padding: 0 13px; font-size: 14px; }
  .nav-dropdown { width: 100%; }
  .dropdown-panel { position: static; width: auto; margin-top: 4px; padding: 6px; border-radius: 13px; box-shadow: none; background: var(--paper-2); }
  .home-hero-grid { padding: 72px 0 60px; }
  .frameworks-section, .content-section, .dark-section, .related-section { padding: 80px 0; }
  .home-hero h1 { font-size: clamp(64px, 18vw, 95px); }
  .orientation-grid, .two-column-copy, .split-layout, .author-grid { grid-template-columns: 1fr; gap: 40px; }
  .orientation-keys { grid-column: 1; }
  .sticky-heading { position: static; }
  .triad-columns, .order-grid, .commitment-grid, .construct-grid { grid-template-columns: repeat(2,1fr); }
  .commitment-grid { border-left: 0; }
  .commitment-grid article { border-left: 1px solid rgba(255,255,255,.14); }
  .principle-band .page-width { grid-template-columns: 1fr; gap: 12px; }
  .fleet-units { grid-template-columns: repeat(2,1fr); }
  .comparison-cards { grid-template-columns: 1fr; }
  .page-hero-grid { grid-template-columns: 1fr; min-height: 0; padding: 75px 0 65px; }
  .library-mark, .about-symbol { justify-self: start; }
  .library-mark { width: 210px; height: 210px; }
  .book-group-heading { grid-template-columns: 1fr; gap: 10px; }
  .book-group-heading > p:last-child { grid-column: 1; }
  .book-card { grid-template-columns: 160px 1fr; }
  .lineage-track { grid-template-columns: 1fr; }
  .lineage-track i { height: 45px; width: 1px; margin-inline: auto; }
  .lineage-track i::after { right: auto; left: 50%; top: auto; bottom: -4px; transform: translateX(-50%) rotate(90deg); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-orientation { grid-column: 1 / -1; }
}

@media (max-width: 600px) {
  .page-width, .nav-shell, .footer-grid { width: min(calc(100% - 32px), var(--max)); }
  .home-hero-grid { padding-top: 58px; }
  .hero-abstract { font-size: 15.5px; }
  .home-hero-visual { min-height: 330px; }
  .visual-caption { margin-top: -8px; }
  .framework-bento { grid-template-columns: 1fr; }
  .framework-card, .framework-card--lead, .framework-card--wide, .framework-card:nth-child(4) { grid-column: auto; min-height: 355px; }
  .framework-card { padding: 25px; }
  .orientation-statement, .home-books { padding: 75px 0; }
  .book-stack { min-height: 330px; }
  .book-stack img { width: 165px; }
  .book-stack img:nth-child(2) { left: 95px; }
  .book-stack img:nth-child(3) { left: 195px; }
  .framework-hero-grid { padding: 60px 0; }
  .framework-hero h1 { font-size: clamp(50px, 15vw, 72px); }
  .featured-book { grid-template-columns: 105px 1fr; gap: 16px; padding: 17px; }
  .featured-book img { width: 105px; }
  .triad-columns, .order-grid, .commitment-grid, .construct-grid, .related-grid { grid-template-columns: 1fr; }
  .order-card { min-height: 350px; }
  .fleet-figure { padding: 30px 20px; }
  .fleet-units { grid-template-columns: 1fr 1fr; gap: 10px; }
  .plane-card { grid-template-columns: 1fr; }
  .plane-card > span { grid-row: auto; }
  .relation-grid { grid-template-columns: 1fr; }
  .relation-grid .button { grid-column: 1; }
  .dimension-cloud { grid-template-columns: 1fr 1fr; }
  .book-card { grid-template-columns: 1fr; }
  .book-cover { min-height: 320px; }
  .book-cover img { max-height: 290px; }
  .symbol-ring { width: 260px; height: 260px; }
  .symbol-ring::before { inset: 45px; }
  .symbol-ring::after { inset: 90px; }
  .symbol-ring span:nth-child(2) { right: -28px; top: 73px; }
  .symbol-ring span:nth-child(5) { left: -27px; top: 73px; }
  .author-monogram { min-height: 320px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-orientation { grid-column: 1; }
}