:root {
  --paper: #f4efe6;
  --paper-deep: #eae2d5;
  --paper-light: #faf7f1;
  --ink: #171714;
  --ink-soft: #555149;
  --ink-faint: #817b70;
  --rule: rgba(23, 23, 20, 0.14);
  --rule-strong: rgba(23, 23, 20, 0.28);
  --terracotta: #b85f43;
  --terracotta-soft: #d9a08d;
  --cobalt: #315c8b;
  --green: #486b57;
  --yellow: #b78732;
  --red: #9d463c;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", serif;
  --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --ease: cubic-bezier(.32, .72, 0, 1);
  --page: min(1440px, 100%);
  --pad: clamp(24px, 5.5vw, 88px);
  --shadow: 0 32px 70px -42px rgba(23, 23, 20, .42), 0 10px 24px -18px rgba(23, 23, 20, .22);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--paper);
  color: var(--ink);
}

body {
  margin: 0;
  min-width: 320px;
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.72;
  letter-spacing: -.01em;
  background:
    radial-gradient(circle at 92% 3%, rgba(184, 95, 67, .075), transparent 22rem),
    var(--paper);
  color: var(--ink);
  overflow-x: clip;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: .045;
  background-image:
    repeating-radial-gradient(circle at 20% 20%, rgba(23, 23, 20, .36) 0 .5px, transparent .5px 3px);
  background-size: 5px 5px;
  mix-blend-mode: multiply;
}

button, input, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }
a { color: inherit; }
img { max-width: 100%; }
section[id] { scroll-margin-top: 72px; }
::selection { background: var(--terracotta); color: var(--paper-light); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  left: 18px;
  top: -60px;
  z-index: 10001;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 16px;
  text-decoration: none;
  transition: top .25s var(--ease);
}

.skip-link:focus { top: 18px; }

:focus-visible {
  outline: 2px solid var(--terracotta);
  outline-offset: 4px;
}

.page-progress {
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: rgba(23, 23, 20, .06);
}

.page-progress span {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--terracotta);
  will-change: transform;
}

.site-nav {
  position: fixed;
  z-index: 900;
  top: 3px;
  left: 0;
  right: 0;
  height: 70px;
  padding: 0 var(--pad);
  display: flex;
  align-items: center;
  gap: 32px;
  border-bottom: 1px solid transparent;
  background: rgba(244, 239, 230, .72);
  backdrop-filter: saturate(140%) blur(18px);
  transition: height .4s var(--ease), border-color .4s var(--ease), background .4s var(--ease);
}

.site-nav.is-scrolled {
  height: 58px;
  border-color: var(--rule);
  background: rgba(244, 239, 230, .9);
}

.site-mark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  transition: transform .45s var(--ease);
}

.site-mark__seal {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  font: 600 12px/1 var(--serif);
}

.site-mark__name {
  font: 600 12px/1 var(--mono);
  letter-spacing: .14em;
}

.site-nav__links {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.2vw, 38px);
}

.site-nav__links a {
  position: relative;
  padding: 8px 0;
  color: var(--ink-soft);
  font-size: 14px;
  text-decoration: none;
}

.site-nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2px;
  height: 1px;
  background: var(--terracotta);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}

.site-nav__links a:hover::after,
.site-nav__links a.is-active::after { transform: scaleX(1); }
.site-nav__links a.is-active { color: var(--ink); }

.nav-menu {
  display: none;
  margin-left: auto;
  width: 42px;
  height: 42px;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav-menu > span:not(.sr-only) {
  display: block;
  width: 22px;
  height: 1px;
  margin: 6px auto;
  background: var(--ink);
  transition: transform .35s var(--ease);
}

.nav-menu[aria-expanded="true"] > span:first-child { transform: translateY(3.5px) rotate(45deg); }
.nav-menu[aria-expanded="true"] > span:nth-child(2) { transform: translateY(-3.5px) rotate(-45deg); }

.mobile-nav {
  position: fixed;
  z-index: 850;
  inset: 61px 0 auto;
  padding: 20px 24px 26px;
  display: grid;
  background: rgba(244, 239, 230, .98);
  border-bottom: 1px solid var(--rule);
  box-shadow: var(--shadow);
}

.mobile-nav[hidden] { display: none; }
.mobile-nav a { padding: 13px 0; border-bottom: 1px solid var(--rule); text-decoration: none; }

.learning-spine {
  position: fixed;
  z-index: 700;
  left: clamp(12px, 2vw, 32px);
  top: 50%;
  width: 62px;
  transform: translateY(-48%);
  display: grid;
  justify-items: center;
  gap: 12px;
  pointer-events: none;
}

.learning-spine svg { width: 30px; height: min(58vh, 540px); overflow: visible; }
.spine-track, .spine-draw { fill: none; stroke-linecap: round; }
.spine-track { stroke: rgba(23, 23, 20, .13); stroke-width: 1.4; }
.spine-draw {
  stroke: var(--terracotta);
  stroke-width: 2.2;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
}

.spine-nodes circle {
  fill: var(--paper);
  stroke: rgba(23, 23, 20, .22);
  stroke-width: 2;
  transition: fill .35s var(--ease), stroke .35s var(--ease), transform .35s var(--ease);
  transform-box: fill-box;
  transform-origin: center;
}

.spine-nodes circle.is-active { fill: var(--terracotta); stroke: var(--terracotta); transform: scale(1.28); }
.spine-nodes circle.is-past { fill: var(--terracotta-soft); stroke: var(--terracotta-soft); }

.learning-spine__readout {
  display: grid;
  justify-items: center;
  gap: 3px;
  writing-mode: vertical-rl;
}

.learning-spine__readout span { font: 600 10px/1 var(--mono); color: var(--terracotta); }
.learning-spine__readout strong { font: 500 12px/1 var(--sans); letter-spacing: .18em; }

main { width: 100%; }
.section-pad { width: var(--page); margin: 0 auto; padding: clamp(110px, 11vw, 180px) var(--pad); }
.chapter, [id] { scroll-margin-top: 58px; }

.eyebrow {
  margin: 0 0 18px;
  font: 600 11px/1.3 var(--mono);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--terracotta);
}

.section-heading { max-width: 1040px; margin-bottom: clamp(50px, 7vw, 96px); }
.section-heading h2, .section-heading h3, .concept-head h3, .method-heading h3 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: -.035em;
  line-height: 1.05;
}

.section-heading h2 { max-width: 11ch; font-size: clamp(56px, 7.7vw, 118px); }
.section-heading h3, .concept-head h3, .method-heading h3 { font-size: clamp(42px, 5.2vw, 76px); }
.section-lead, .concept-head > p:last-child {
  max-width: 42ch;
  margin: 28px 0 0;
  font-size: clamp(20px, 2vw, 27px);
  line-height: 1.55;
  color: var(--ink-soft);
}

.concept-head { display: grid; grid-template-columns: minmax(0, 4fr) minmax(280px, 2fr); gap: 40px; align-items: end; margin-bottom: clamp(44px, 6vw, 82px); }
.concept-head .eyebrow {
  grid-column: 1 / -1;
  margin-bottom: -8px;
  font-size: clamp(18px, 1.8vw, 26px);
  letter-spacing: .08em;
}
.concept-head h3 { max-width: 15ch; }
.concept-head > p:last-child { margin: 0; }
.concept-definition span {
  display: block;
  width: fit-content;
  margin-bottom: 12px;
  padding: 6px 9px;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  color: var(--terracotta);
  font: 600 10px/1 var(--mono);
  letter-spacing: .1em;
}

.memory-line {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: start;
  max-width: 980px;
  margin: 50px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--rule-strong);
  font: 500 clamp(20px, 2.2vw, 30px)/1.55 var(--serif);
}

.memory-line span {
  margin-top: 7px;
  font: 600 10px/1 var(--mono);
  color: var(--terracotta);
  letter-spacing: .14em;
  text-transform: uppercase;
}

.lab-surface {
  background: linear-gradient(180deg, rgba(250, 247, 241, .94), rgba(234, 226, 213, .88));
  box-shadow: inset 0 1px 0 rgba(255,255,255,.7), 0 0 0 1px var(--rule), var(--shadow);
  border-radius: 28px;
}

.media-frame {
  position: relative;
  margin: 0;
  padding: 10px;
  border-radius: 30px;
  background: rgba(255,255,255,.25);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.7), 0 0 0 1px var(--rule), var(--shadow);
  overflow: hidden;
  transform-style: preserve-3d;
  transition: transform .7s var(--ease), box-shadow .7s var(--ease);
}

.media-frame img { display: block; width: 100%; height: auto; border-radius: 21px; }
.media-frame figcaption {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  pointer-events: none;
}

.media-frame figcaption span {
  padding: 7px 11px;
  border: 1px solid rgba(255,255,255,.45);
  border-radius: 999px;
  background: rgba(244,239,230,.82);
  backdrop-filter: blur(12px);
  color: var(--ink);
  font: 600 10px/1 var(--mono);
  letter-spacing: .08em;
}

[data-spotlight]::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(480px circle at var(--spot-x, 50%) var(--spot-y, 50%), rgba(255,255,255,.14), transparent 72%);
  opacity: 0;
  transition: opacity .45s var(--ease);
}

[data-spotlight]:hover::after { opacity: 1; }

.reveal { opacity: 1; transform: none; }
.js .reveal { opacity: 0; transform: translateY(14px); filter: blur(4px); }
.js .reveal.is-visible { opacity: 1; transform: none; filter: none; transition: opacity .8s var(--ease), transform .8s var(--ease), filter .8s var(--ease); }

/* Hero */
.hero {
  min-height: 100svh;
  width: var(--page);
  margin: 0 auto;
  padding: 104px var(--pad) 54px;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-template-rows: auto auto auto;
  gap: 28px 20px;
  align-items: end;
}

.hero__kicker {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--rule);
  font: 600 10px/1 var(--mono);
  letter-spacing: .14em;
}

.hero__title-wrap { grid-column: 1 / 10; grid-row: 2; position: relative; z-index: 2; padding: 20px 0 52px; }
.hero__title { margin: 0; font-family: var(--serif); font-size: clamp(58px, 8.8vw, 137px); font-weight: 500; line-height: .94; letter-spacing: -.055em; }
.title-line { display: block; overflow: hidden; }
.title-line i { display: block; font-style: normal; transform: translateY(108%); animation: title-in 1.05s var(--ease) forwards; }
.title-line:nth-child(2) i { animation-delay: .1s; }
.title-line:nth-child(3) i { animation-delay: .2s; }
.title-line--accent { color: var(--terracotta); }
@keyframes title-in { to { transform: translateY(0); } }
.hero__intro { max-width: 44ch; margin: 28px 0 0; color: var(--ink-soft); font-size: clamp(18px, 1.7vw, 25px); }

.hero__visual { grid-column: 6 / -1; grid-row: 2 / span 2; align-self: end; transform-origin: center; }
.hero__visual img { aspect-ratio: 16/9; object-fit: cover; }
.hero__routes { grid-column: 1 / 7; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); }
.hero__routes a { display: grid; gap: 6px; padding: 18px 14px 16px 0; text-decoration: none; border-right: 1px solid var(--rule); transition: color .3s var(--ease), padding .3s var(--ease); }
.hero__routes a:hover { color: var(--terracotta); padding-left: 8px; }
.hero__routes b { font: 600 10px/1 var(--mono); color: var(--terracotta); }
.hero__routes span { font: 500 26px/1.2 var(--serif); }
.hero__routes small { color: var(--ink-soft); font-size: 12px; line-height: 1.4; }
.hero__start { grid-column: 10 / -1; justify-self: end; align-self: end; display: inline-flex; gap: 28px; align-items: center; padding: 14px 20px; border: 1px solid var(--ink); border-radius: 999px; text-decoration: none; font-size: 14px; transition: transform .5s var(--ease), background .4s var(--ease), color .4s var(--ease); }
.hero__start:hover { background: var(--ink); color: var(--paper); }

/* Opening */
.opening { border-top: 1px solid var(--rule); }
.question-stage { max-width: 1120px; padding: clamp(28px, 4vw, 52px); border: 1px solid var(--rule-strong); border-radius: 26px; background: rgba(250,247,241,.52); }
.question-stage__head { display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: start; }
.question-stage__head p { margin: 0; font: 500 clamp(24px, 3vw, 42px)/1.3 var(--serif); }
.question-tag { padding: 7px 10px; border-radius: 999px; background: var(--terracotta); color: white; font: 600 10px/1 var(--mono); letter-spacing: .1em; }
.poll-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 38px; }
.poll-grid button { min-height: 128px; padding: 18px; display: grid; align-content: space-between; text-align: left; border: 1px solid var(--rule); border-radius: 16px; background: transparent; cursor: pointer; transition: transform .45s var(--ease), background .45s var(--ease), border-color .45s var(--ease); }
.poll-grid button:hover { transform: translateY(-3px); border-color: var(--ink); background: var(--paper-light); }
.poll-grid button.is-selected { border-color: var(--terracotta); background: rgba(184,95,67,.08); }
.poll-grid b { font: 600 12px/1 var(--mono); color: var(--terracotta); }
.poll-grid span { font-size: 15px; line-height: 1.45; }
.question-answer { margin-top: 24px; padding-top: 22px; border-top: 1px solid var(--rule); }
.question-answer strong { font: 500 22px/1.4 var(--serif); }
.question-answer p { margin: 8px 0 0; color: var(--ink-soft); }

.opening-thesis { display: grid; grid-template-columns: 1fr 2fr; gap: clamp(30px,6vw,90px); margin-top: 100px; padding-top: 28px; border-top: 1px solid var(--ink); }
.opening-thesis > p { margin: 0; color: var(--ink-soft); }
.opening-thesis ol { list-style: none; margin: 0; padding: 0; }
.opening-thesis li { display: grid; grid-template-columns: 44px 1fr; gap: 20px; padding: 20px 0; border-bottom: 1px solid var(--rule); font: 500 clamp(20px, 2.2vw, 30px)/1.45 var(--serif); }
.opening-thesis li span { padding-top: 6px; font: 600 10px/1 var(--mono); color: var(--terracotta); }

/* Chapter covers */
.chapter-cover {
  position: relative;
  min-height: min(940px, 100svh);
  width: 100%;
  padding: clamp(110px, 12vw, 190px) max(var(--pad), calc((100vw - 1440px)/2 + var(--pad)));
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
  align-items: end;
  overflow: hidden;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.chapter-cover::before, .chapter-cover::after {
  content: "";
  position: absolute;
  border: 1px solid currentColor;
  border-radius: 50%;
  opacity: .1;
  pointer-events: none;
}
.chapter-cover::before { width: 62vw; height: 62vw; right: -24vw; top: -30vw; }
.chapter-cover::after { width: 45vw; height: 45vw; right: -15vw; top: -20vw; border-style: dashed; }
.chapter-cover--understand { background: var(--paper-deep); }
.chapter-cover--deliver { background: #dfe5e7; color: #17212a; }
.chapter-cover--judge { background: #1d211d; color: #f2ede4; }
.chapter-cover__number { position: absolute; right: 5vw; bottom: -7vw; font: 400 min(38vw, 540px)/.7 var(--serif); opacity: .055; letter-spacing: -.1em; }
.chapter-cover__copy { position: relative; z-index: 2; grid-column: 1 / 8; }
.chapter-cover__copy h2 { max-width: 9ch; margin: 0; font: 500 clamp(64px, 8.5vw, 132px)/.97 var(--serif); letter-spacing: -.055em; }
.chapter-cover__copy > p:last-child { max-width: 37ch; margin: 28px 0 0; font-size: 21px; color: currentColor; opacity: .72; }
.chapter-cover__map, .chapter-cover__statement { position: relative; z-index: 2; grid-column: 9 / -1; align-self: end; }
.chapter-cover__map div { display: grid; gap: 4px; padding: 18px 0; border-top: 1px solid currentColor; }
.chapter-cover__map span, .chapter-cover__statement span { font: 600 10px/1 var(--mono); letter-spacing: .12em; color: var(--terracotta); }
.chapter-cover__map b { font: 500 22px/1.4 var(--serif); }
.chapter-cover__map small { opacity: .65; font-size: 12px; }
.chapter-cover__statement { display: grid; gap: 10px; }
.chapter-cover__statement b { padding-bottom: 20px; border-bottom: 1px solid currentColor; font: 500 20px/1.45 var(--serif); }
.chapter-cover--judge .eyebrow, .chapter-cover--judge .chapter-cover__statement span { color: var(--terracotta-soft); }

/* Bit */
.bit-lab { min-height: 460px; padding: clamp(28px, 5vw, 70px); display: grid; grid-template-columns: 1.2fr .8fr; gap: 50px; align-items: center; }
.bit-lab__control label { display: block; margin-bottom: 26px; font-size: 18px; }
.bit-lab__control label strong { font: 500 52px/1 var(--serif); color: var(--terracotta); }
.bit-lab input[type="range"] { width: 100%; accent-color: var(--terracotta); }
.bit-switches { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.bit-switches button { width: 52px; height: 62px; border: 1px solid var(--rule-strong); border-radius: 12px; background: var(--paper-light); cursor: pointer; font: 600 20px/1 var(--mono); box-shadow: 0 8px 18px -16px var(--ink); transition: transform .35s var(--ease), background .35s var(--ease), color .35s var(--ease); }
.bit-switches button[aria-pressed="true"] { background: var(--ink); color: var(--paper); transform: translateY(-3px); }
.bit-lab__result { display: grid; justify-items: center; text-align: center; }
.bit-lab__result > span { color: var(--ink-soft); }
.bit-lab__result strong { font: 400 clamp(92px, 13vw, 190px)/.95 var(--serif); letter-spacing: -.07em; }
.bit-lab__result small { margin-top: 12px; font: 600 11px/1 var(--mono); color: var(--terracotta); }
.bit-lab__examples { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: 6px; }
.bit-lab__examples span { padding: 8px 5px; border: 1px solid var(--rule); border-radius: 8px; text-align: center; font: 500 11px/1 var(--mono); }

/* Token */
.token-lab { padding: clamp(28px, 5vw, 62px); }
.token-lab__input label { display: block; margin-bottom: 12px; font: 600 11px/1 var(--mono); letter-spacing: .12em; color: var(--terracotta); }
.input-line { display: grid; grid-template-columns: 1fr auto; gap: 12px; }
.input-line input { min-width: 0; border: 0; border-bottom: 1px solid var(--ink); padding: 8px 4px 14px; background: transparent; font: 500 clamp(28px, 4vw, 56px)/1.2 var(--serif); }
.input-line button, .connector-lab > button, .agent-loop__control button, .execution-stage__evidence button, .ask-builder__case > button, .roundtable-lab__stage button, .action-sheet button, .prompt-template button {
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  padding: 12px 18px;
  cursor: pointer;
  font-size: 13px;
  transition: transform .35s var(--ease), background .35s var(--ease), color .35s var(--ease);
}
.input-line button:hover, .connector-lab > button:hover, .agent-loop__control button:hover, .execution-stage__evidence button:hover, .ask-builder__case > button:hover, .roundtable-lab__stage button:hover, .action-sheet button:hover, .prompt-template button:hover { transform: translateY(-2px); background: var(--terracotta); border-color: var(--terracotta); }
.token-lab__input > p { margin: 10px 0 0; color: var(--ink-faint); font-size: 12px; }
.token-fixed-preview {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  align-items: center;
}
.token-fixed-preview span { margin-right: 5px; color: var(--ink-faint); font: 600 10px/1 var(--mono); letter-spacing: .08em; }
.token-fixed-preview b { padding: 7px 11px; border: 1px solid var(--terracotta); border-radius: 999px; color: var(--terracotta); font: 500 14px/1 var(--sans); }
.token-fixed-preview i { color: var(--ink-faint); font-style: normal; }
.token-steps { margin: 40px 0 26px; display: flex; border-bottom: 1px solid var(--rule); }
.token-steps button { flex: 1; padding: 14px 8px; border: 0; border-bottom: 2px solid transparent; background: transparent; cursor: pointer; color: var(--ink-faint); }
.token-steps button.is-active { color: var(--ink); border-color: var(--terracotta); }
.token-output { min-height: 230px; display: grid; align-content: center; gap: 12px; }
.token-chips { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.token-chip { display: inline-flex; flex-direction: column; gap: 6px; padding: 16px 20px; border: 1px solid var(--rule-strong); border-radius: 14px; background: var(--paper-light); }
.token-chip b { font: 500 clamp(22px, 2.4vw, 32px)/1.1 var(--serif); }
.token-chip small { font: 500 10px/1 var(--mono); color: var(--terracotta); }
.vector-rows { display: grid; gap: 9px; }
.vector-row { display: grid; grid-template-columns: minmax(80px, .25fr) 1fr; gap: 18px; padding: 14px 0; border-bottom: 1px solid var(--rule); }
.vector-row span { font-weight: 600; }
.vector-row code { overflow-x: auto; font: 12px/1.5 var(--mono); color: var(--cobalt); }
.bit-rows { display: grid; gap: 8px; }
.bit-row { display: grid; grid-template-columns: 80px 100px 1fr; gap: 18px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--rule); }
.bit-row code { font: 12px/1.4 var(--mono); word-break: break-all; }
.token-legend { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--rule); }
.token-legend div { display: grid; grid-template-columns: 8px 1fr; gap: 4px 9px; align-items: center; }
.token-legend i { width: 7px; height: 7px; border-radius: 50%; background: var(--terracotta); grid-row: 1 / span 2; }
.token-legend div:nth-child(2) i { background: var(--yellow); }
.token-legend div:nth-child(3) i { background: var(--cobalt); }
.token-legend div:nth-child(4) i { background: var(--ink); }
.token-legend span { font-weight: 600; font-size: 13px; }
.token-legend small { color: var(--ink-faint); font-size: 10px; }

.inline-question { margin-top: 44px; padding: 28px 0; border-top: 1px solid var(--rule-strong); border-bottom: 1px solid var(--rule-strong); }
.inline-question > p:first-child { margin: 0 0 18px; font: 500 clamp(20px,2vw,28px)/1.4 var(--serif); }
.inline-question > div { display: flex; flex-wrap: wrap; gap: 8px; }
.inline-question button { padding: 10px 14px; border: 1px solid var(--rule-strong); border-radius: 999px; background: transparent; cursor: pointer; transition: background .3s, color .3s, border-color .3s; }
.inline-question button:hover { border-color: var(--ink); }
.inline-question button.is-correct { background: var(--green); color: white; border-color: var(--green); }
.inline-question button.is-wrong { background: rgba(157,70,60,.1); color: var(--red); border-color: var(--red); }
.inline-answer { margin: 18px 0 0; color: var(--ink-soft); }

/* Prediction and attention */
.llm-map {
  margin-bottom: 44px;
  overflow: hidden;
}
.llm-map__head {
  display: grid;
  grid-template-columns: minmax(220px, .7fr) minmax(0, 1.3fr);
  gap: 36px;
  align-items: end;
  padding: clamp(28px, 4vw, 48px);
}
.llm-map__head > span { font: 500 clamp(28px, 3vw, 44px)/1.2 var(--serif); }
.llm-map__head p { max-width: 48ch; margin: 0; color: var(--ink-soft); }
.llm-map__grid { display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.llm-map__grid article {
  min-height: 190px;
  padding: 26px 22px;
  display: grid;
  align-content: space-between;
  gap: 12px;
  border-right: 1px solid var(--rule);
}
.llm-map__grid article:last-child { border-right: 0; }
.llm-map__grid b { font: 500 clamp(25px, 2.4vw, 36px)/1 var(--serif); }
.llm-map__grid strong { align-self: end; font-size: 14px; }
.llm-map__grid small { color: var(--ink-faint); font: 500 10px/1.4 var(--mono); }
.llm-map__relation { margin: 0; padding: 24px clamp(28px, 4vw, 48px) 28px; color: var(--ink-soft); }
.llm-map__relation b { color: var(--ink); }
.prediction-lab { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; padding: clamp(28px,5vw,60px); align-items: center; }
.prediction-sentence { font: 500 clamp(44px,6vw,90px)/1.15 var(--serif); letter-spacing: -.04em; }
.prediction-sentence span { color: var(--terracotta); }
.prob-bars { display: grid; gap: 10px; }
.prob-bars button { display: grid; grid-template-columns: 28px 1fr 42px; gap: 12px; align-items: center; border: 0; padding: 9px 0; background: transparent; cursor: pointer; }
.prob-bars i { position: relative; height: 8px; border-radius: 999px; background: rgba(23,23,20,.08); overflow: hidden; }
.prob-bars i::after { content: ""; display: block; width: var(--p); height: 100%; border-radius: inherit; background: var(--terracotta); transform: scaleX(.2); transform-origin: left; transition: transform .8s var(--ease); }
.prediction-lab.is-live .prob-bars i::after { transform: scaleX(1); }
.prob-bars b { font: 600 11px/1 var(--mono); }
.demo-note { grid-column: 1 / -1; margin: 0; color: var(--ink-faint); font-size: 11px; }
.attention-demo { margin-top: 44px; display: grid; grid-template-columns: .8fr 1.2fr; gap: 50px; padding: clamp(30px,5vw,58px); border: 1px solid var(--rule); border-radius: 26px; }
.attention-demo__copy span { font: 600 10px/1 var(--mono); color: var(--cobalt); letter-spacing: .1em; }
.attention-demo__copy h4 { margin: 18px 0 10px; font: 500 clamp(25px,3vw,40px)/1.25 var(--serif); }
.attention-demo__copy p { margin: 0; color: var(--ink-soft); }
.attention-sentence { display: flex; flex-wrap: wrap; align-content: center; gap: 8px 5px; font: 500 clamp(20px,2.3vw,32px)/1.6 var(--serif); }
.attention-sentence button { position: relative; border: 0; border-radius: 8px; padding: 1px 4px; background: rgba(49,92,139,.08); cursor: pointer; transition: background .35s, box-shadow .35s; }
.attention-sentence button.is-hot { background: color-mix(in srgb, var(--cobalt) var(--weight), transparent); box-shadow: 0 0 0 1px rgba(49,92,139,.22); }
.attention-trigger { color: var(--cobalt); }
.attention-readout { grid-column: 2; padding-top: 18px; border-top: 1px solid var(--rule); color: var(--ink-soft); font-size: 13px; }

/* Context */
.context-desk { display: grid; grid-template-columns: minmax(210px,.65fr) minmax(0,1.35fr); min-height: 570px; overflow: hidden; }
.context-desk__materials { padding: clamp(24px,4vw,48px); border-right: 1px solid var(--rule); }
.context-desk__materials > p { margin: 0 0 20px; font: 600 11px/1 var(--mono); letter-spacing: .12em; color: var(--terracotta); }
.context-desk__materials button { width: 100%; display: flex; justify-content: space-between; padding: 15px 0; border: 0; border-bottom: 1px solid var(--rule); background: transparent; cursor: pointer; text-align: left; color: var(--ink-soft); }
.context-desk__materials button::before { content: "+"; margin-right: 10px; font: 500 16px/1 var(--mono); color: var(--terracotta); }
.context-desk__materials button.is-on { color: var(--ink); }
.context-desk__materials button.is-on::before { content: "✓"; color: var(--green); }
.context-desk__materials button small { font: 500 10px/1 var(--mono); color: var(--ink-faint); }
.context-desk__surface { display: grid; grid-template-rows: 1fr auto; padding: clamp(24px,4vw,48px); background: radial-gradient(circle at 50% 38%, rgba(255,255,255,.7), transparent 60%); }
.desk-grid { position: relative; min-height: 350px; display: grid; grid-template-columns: repeat(3,1fr); grid-auto-rows: 100px; gap: 12px; align-content: center; }
.desk-grid::before { content: "CONTEXT / CURRENT DESK"; position: absolute; top: 0; left: 0; font: 600 9px/1 var(--mono); letter-spacing: .12em; color: var(--ink-faint); }
.desk-grid span { display: grid; place-items: center; padding: 10px; border: 1px solid var(--rule-strong); background: var(--paper-light); box-shadow: 0 14px 25px -22px var(--ink); text-align: center; font-size: 13px; animation: desk-in .45s var(--ease); }
@keyframes desk-in { from { opacity: 0; transform: translateY(8px) rotate(-1deg); } }
.context-meter { padding-top: 20px; border-top: 1px solid var(--rule); }
.context-meter > div { display: grid; grid-template-columns: auto 1fr auto; gap: 14px; align-items: center; }
.context-meter span { font-size: 12px; }
.context-meter b { height: 7px; border-radius: 999px; background: rgba(23,23,20,.08); overflow: hidden; }
.context-meter i { display: block; height: 100%; width: 1.25%; background: var(--green); border-radius: inherit; transition: width .6s var(--ease), background .3s; }
.context-meter strong { font: 500 11px/1 var(--mono); white-space: nowrap; }
.context-meter em { font-style: normal; }
.context-meter p { margin: 10px 0 0; color: var(--ink-soft); font-size: 13px; }
.context-notes { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; margin-top: 30px; background: var(--rule); border: 1px solid var(--rule); }
.context-notes div { padding: 24px; background: var(--paper); }
.context-notes b { font: 500 22px/1.3 var(--serif); }
.context-notes p { margin: 8px 0 0; color: var(--ink-soft); font-size: 14px; }

/* Prompt */
.prompt-compare { display: grid; grid-template-columns: 1fr auto 1fr; gap: 22px; align-items: stretch; }
.prompt-card { min-height: 400px; padding: clamp(28px,4vw,50px); border: 1px solid var(--rule-strong); border-radius: 22px; display: grid; align-content: space-between; }
.prompt-card > span { font: 600 10px/1 var(--mono); letter-spacing: .12em; color: var(--terracotta); }
.prompt-card blockquote { margin: 30px 0; font: 500 clamp(24px,3vw,42px)/1.45 var(--serif); }
.prompt-card p { color: var(--ink-soft); }
.prompt-card--strong { background: var(--ink); color: var(--paper); opacity: .35; filter: blur(3px); transform: scale(.96); transition: opacity .8s var(--ease), filter .8s var(--ease), transform .8s var(--ease); }
.prompt-card--strong.is-revealed { opacity: 1; filter: none; transform: none; }
.prompt-card--strong ul { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; list-style: none; }
.prompt-card--strong li { padding: 6px 10px; border: 1px solid rgba(244,239,230,.24); border-radius: 999px; font-size: 11px; }
.prompt-transform { align-self: center; width: 118px; aspect-ratio: 1; border: 1px solid var(--ink); border-radius: 50%; background: var(--terracotta); color: white; cursor: pointer; font-size: 12px; transition: transform .6s var(--ease); }
.prompt-transform:hover { transform: rotate(-5deg) scale(1.04); }

/* Connectors */
.connector-section { background: var(--paper-deep); max-width: none; }
.connector-section > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.connector-lab { position: relative; display: grid; grid-template-columns: 1fr 64px 1fr 64px 1fr; gap: 10px; align-items: center; padding: clamp(30px,5vw,60px); overflow: hidden; }
.connector-node { min-height: 250px; padding: 26px; border: 1px solid var(--rule); border-radius: 18px; background: rgba(250,247,241,.66); transition: transform .5s var(--ease), border-color .5s var(--ease), box-shadow .5s var(--ease); }
.connector-node.is-active { transform: translateY(-5px); border-color: var(--cobalt); box-shadow: 0 24px 50px -35px var(--cobalt); }
.connector-node > span { font: 600 10px/1 var(--mono); color: var(--cobalt); }
.connector-node b { display: block; margin-top: 30px; font: 500 clamp(34px,4vw,56px)/1 var(--serif); }
.connector-node p { min-height: 50px; margin: 12px 0; font-weight: 600; line-height: 1.45; }
.connector-node small { color: var(--ink-soft); line-height: 1.5; }
.connector-line { height: 1px; background: var(--rule-strong); overflow: hidden; }
.connector-line i { display: block; width: 100%; height: 100%; background: var(--cobalt); transform: translateX(-100%); }
.connector-lab.is-running .connector-line i { animation: line-run .55s var(--ease) forwards; }
@keyframes line-run { to { transform: translateX(0); } }
.connector-lab > button { grid-column: 1 / 3; justify-self: start; margin-top: 22px; }
.connector-log { grid-column: 3 / -1; align-self: end; min-height: 44px; padding: 12px 14px; border-left: 2px solid var(--cobalt); color: var(--ink-soft); font: 500 12px/1.6 var(--mono); }

/* Agent */
.agent-loop { display: grid; grid-template-columns: minmax(0,1.3fr) minmax(280px,.7fr); gap: 20px; padding: clamp(20px,4vw,50px); border: 1px solid var(--rule); border-radius: 30px; background: rgba(250,247,241,.54); transition: transform .65s var(--ease); }
.agent-loop svg { width: 100%; overflow: visible; }
.agent-loop__track, .agent-loop__active { fill: none; stroke-linecap: round; }
.agent-loop__track { stroke: var(--rule-strong); stroke-width: 2; }
.agent-loop__active { stroke: var(--terracotta); stroke-width: 4; stroke-dasharray: 1; stroke-dashoffset: 1; transition: stroke-dashoffset .7s var(--ease); }
.agent-loop g circle { fill: var(--paper-light); stroke: var(--rule-strong); stroke-width: 2; transition: fill .4s, stroke .4s, transform .4s; transform-box: fill-box; transform-origin: center; }
.agent-loop g text { text-anchor: middle; font: 600 16px/1 var(--sans); fill: var(--ink-soft); pointer-events: none; }
.agent-loop g.is-active circle { fill: var(--terracotta); stroke: var(--terracotta); transform: scale(1.12); }
.agent-loop g.is-active text { fill: white; }
.agent-loop g.is-past circle { fill: var(--terracotta-soft); stroke: var(--terracotta-soft); }
.agent-loop__center { font: 500 23px/1 var(--serif); fill: var(--ink); }
.agent-loop__center--sub { font: 400 12px/1 var(--sans); fill: var(--ink-soft); }
.agent-loop__control { align-self: center; padding: 30px; border-left: 1px solid var(--rule); }
.agent-loop__control > span, .execution-stage__evidence > span, .business-tabs__panel > span, .roundtable-lab__stage > span { font: 600 10px/1 var(--mono); letter-spacing: .12em; color: var(--terracotta); }
.agent-loop__control strong { display: block; margin-top: 20px; font: 500 clamp(28px,3vw,42px)/1.25 var(--serif); }
.agent-loop__control p { color: var(--ink-soft); }
.agent-loop__control button { margin-top: 20px; }

/* Agent deep dive */
.agent-anatomy { background: var(--paper-deep); max-width: none; }
.agent-anatomy > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.agent-formula { display: flex; align-items: stretch; overflow-x: auto; padding-bottom: 14px; }
.agent-formula span { min-width: 170px; min-height: 118px; display: grid; align-content: center; gap: 9px; padding: 18px; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); font: 500 21px/1.2 var(--serif); }
.agent-formula small { color: var(--ink-soft); font: 500 10px/1.5 var(--sans); }
.agent-formula i { display: grid; place-items: center; min-width: 28px; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); color: var(--terracotta); font-style: normal; }
.agent-parts { display: grid; grid-template-columns: .72fr 1.28fr; min-height: 620px; margin-top: 70px; border: 1px solid var(--rule-strong); border-radius: 24px; overflow: hidden; background: var(--paper); }
.agent-parts__nav { display: grid; padding: 18px; border-right: 1px solid var(--rule); }
.agent-parts__nav button { display: grid; grid-template-columns: 36px 1fr auto; gap: 12px; align-items: center; padding: 18px; border: 0; border-bottom: 1px solid var(--rule); background: transparent; cursor: pointer; text-align: left; }
.agent-parts__nav button:hover, .agent-parts__nav button.is-active { background: var(--ink); color: var(--paper); }
.agent-parts__nav b { color: var(--terracotta); font: 600 9px/1 var(--mono); }
.agent-parts__nav span { font-weight: 600; }
.agent-parts__nav small { opacity: .58; }
.agent-parts__stage { position: relative; display: grid; align-content: center; padding: clamp(38px,6vw,80px); overflow: hidden; }
.agent-parts__stage::after { content: ""; position: absolute; right: -160px; top: -180px; width: 420px; height: 420px; border: 1px solid var(--terracotta); border-radius: 50%; opacity: .14; }
.agent-parts__stage > span { color: var(--terracotta); font: 600 10px/1 var(--mono); letter-spacing: .12em; }
.agent-parts__stage h4 { max-width: 13ch; margin: 26px 0 18px; font: 500 clamp(38px,5vw,70px)/1.08 var(--serif); }
.agent-parts__stage > p { max-width: 50ch; color: var(--ink-soft); }
.agent-parts__stage > div { display: grid; grid-template-columns: 120px 1fr; gap: 18px; margin-top: 34px; padding-top: 20px; border-top: 1px solid var(--ink); }
.agent-parts__stage > div b { color: var(--terracotta); font: 600 10px/1.6 var(--mono); }

/* AI term drawers */
.term-system { background: var(--ink); color: var(--paper); max-width: none; }
.term-system > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.term-system .section-lead { color: rgba(244,239,230,.62); }
.term-drawers { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; border: 1px solid rgba(244,239,230,.18); background: rgba(244,239,230,.18); }
.term-drawers button { min-height: 260px; display: grid; grid-template-columns: 38px 1fr; align-content: start; gap: 8px 12px; padding: 28px; border: 0; background: var(--ink); color: var(--paper); cursor: pointer; text-align: left; transition: background .35s, color .35s, transform .35s var(--ease); }
.term-drawers button:hover, .term-drawers button.is-active { z-index: 1; background: var(--paper); color: var(--ink); transform: translateY(-4px); }
.term-drawers b { color: var(--terracotta-soft); font: 600 9px/1 var(--mono); }
.term-drawers span { font: 500 28px/1.1 var(--serif); }
.term-drawers small, .term-drawers em { grid-column: 2; }
.term-drawers small { margin-top: 34px; color: inherit; opacity: .62; }
.term-drawers em { margin-top: 14px; font: 500 12px/1.5 var(--mono); font-style: normal; color: var(--terracotta-soft); }
.term-drawer__readout { display: grid; grid-template-columns: 180px 1fr; gap: 12px 30px; min-height: 290px; padding: 60px 0; border-bottom: 1px solid rgba(244,239,230,.2); }
.term-drawer__readout span { color: var(--terracotta-soft); font: 600 10px/1 var(--mono); }
.term-drawer__readout h4, .term-drawer__readout p { grid-column: 2; }
.term-drawer__readout h4 { max-width: 19ch; margin: 0; font: 500 clamp(32px,4.2vw,60px)/1.15 var(--serif); }
.term-drawer__readout p { max-width: 58ch; margin: 12px 0 0; color: rgba(244,239,230,.62); }
.term-rule { max-width: 25ch; margin: 100px 0 0; padding: 0; border: 0; font: 500 clamp(34px,4.8vw,68px)/1.25 var(--serif); }

/* Company family map */
.family-map { background: #dfe5e7; max-width: none; }
.family-map > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.family-explorer { border-top: 1px solid var(--ink); }
.family-explorer__nav { display: grid; grid-template-columns: repeat(6,1fr); border-bottom: 1px solid var(--ink); }
.family-explorer__nav button { min-height: 86px; padding: 16px; border: 0; border-right: 1px solid var(--rule); background: transparent; cursor: pointer; font-weight: 600; }
.family-explorer__nav button:hover, .family-explorer__nav button.is-active { background: var(--ink); color: var(--paper); }
.family-explorer__panel { padding: clamp(32px,5vw,70px) 0 0; }
.family-explorer__panel header { display: grid; grid-template-columns: 160px 1fr 1fr; gap: 28px; align-items: end; }
.family-explorer__panel header span { color: var(--cobalt); font: 600 10px/1 var(--mono); }
.family-explorer__panel header h4 { margin: 0; font: 500 clamp(48px,7vw,100px)/.9 var(--serif); letter-spacing: -.04em; }
.family-explorer__panel header p { margin: 0; color: var(--ink-soft); }
.family-chain { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; align-items: stretch; margin-top: 70px; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.family-chain article { min-height: 330px; padding: 28px 20px; display: flex; flex-direction: column; }
.family-chain > i { display: grid; place-items: center; color: var(--terracotta); font: 400 28px/1 var(--serif); font-style: normal; }
.family-chain article > span { color: var(--cobalt); font: 600 9px/1 var(--mono); letter-spacing: .08em; }
.family-chain article b { margin-top: 70px; font: 500 clamp(27px,3vw,42px)/1.1 var(--serif); }
.family-chain article p { margin-top: auto; color: var(--ink-soft); font-size: 13px; }
.family-explorer__panel blockquote { max-width: 34ch; margin: 70px 0 0 auto; padding: 0 0 0 26px; border-left: 2px solid var(--terracotta); font: 500 clamp(27px,3.4vw,46px)/1.35 var(--serif); }

/* Term sorter */
.term-sorter { background: var(--paper-light); max-width: none; }
.term-sorter > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.term-sorter__lab { display: grid; grid-template-columns: .8fr 1.2fr; min-height: 700px; border: 1px solid var(--rule-strong); border-radius: 24px; overflow: hidden; }
.term-sorter__terms { display: grid; grid-template-columns: 1fr 1fr; align-content: start; padding: 18px; border-right: 1px solid var(--rule); background: var(--paper-deep); }
.term-sorter__terms button { min-height: 76px; padding: 14px; border: 0; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); background: transparent; cursor: pointer; text-align: left; font-weight: 600; }
.term-sorter__terms button:hover, .term-sorter__terms button.is-active { background: var(--terracotta); color: white; }
.term-sorter__answer { display: grid; align-content: center; padding: clamp(38px,6vw,80px); background: var(--paper); }
.term-sorter__answer > div:first-child { display: flex; gap: 16px; align-items: center; }
.term-sorter__answer > div:first-child span { color: var(--terracotta); font: 600 10px/1 var(--mono); }
.term-sorter__answer > div:first-child b { padding: 7px 11px; border: 1px solid var(--terracotta); border-radius: 999px; color: var(--terracotta); }
.term-sorter__answer h4 { max-width: 13ch; margin: 30px 0 18px; font: 500 clamp(38px,5vw,70px)/1.08 var(--serif); }
.term-sorter__answer > p { max-width: 52ch; color: var(--ink-soft); }
.term-sorter__answer dl { margin: 34px 0 0; }
.term-sorter__answer dl > div { display: grid; grid-template-columns: 100px 1fr; gap: 18px; padding: 12px 0; border-top: 1px solid var(--rule); }
.term-sorter__answer dt { color: var(--terracotta); font: 600 10px/1.7 var(--mono); }
.term-sorter__answer dd { margin: 0; }
.term-ambiguity { display: grid; grid-template-columns: 140px 1fr 1fr; gap: 28px; margin-top: 50px; padding-top: 24px; border-top: 1px solid var(--ink); }
.term-ambiguity b { color: var(--terracotta); font: 600 10px/1.6 var(--mono); }
.term-ambiguity p { margin: 0; color: var(--ink-soft); }

/* Agent work modes */
.agent-modes { background: #e7e2d8; max-width: none; }
.agent-modes > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.agent-timeline { border-top: 1px solid var(--ink); }
.agent-timeline__axis { display: grid; grid-template-columns: auto 1fr auto 1fr auto 1fr auto; gap: 14px; align-items: center; padding: 18px 0 34px; color: var(--ink-faint); font: 600 9px/1 var(--mono); }
.agent-timeline__axis i { height: 1px; background: var(--rule-strong); }
.agent-timeline__modes { display: grid; grid-template-columns: repeat(4,1fr); border: 1px solid var(--rule-strong); border-radius: 20px 20px 0 0; overflow: hidden; }
.agent-timeline__modes button { min-height: 210px; display: grid; align-content: start; gap: 9px; padding: 24px; border: 0; border-right: 1px solid var(--rule); background: transparent; cursor: pointer; text-align: left; }
.agent-timeline__modes button:hover, .agent-timeline__modes button.is-active { background: var(--ink); color: var(--paper); }
.agent-timeline__modes span { color: var(--terracotta); font: 600 9px/1 var(--mono); }
.agent-timeline__modes b { margin-top: 50px; font: 500 27px/1.2 var(--serif); }
.agent-timeline__modes small { opacity: .62; }
.agent-mode__stage { min-height: 500px; display: grid; grid-template-columns: .55fr 1.15fr .9fr; gap: 34px; align-content: center; padding: clamp(36px,6vw,76px); border: 1px solid var(--rule-strong); border-top: 0; border-radius: 0 0 20px 20px; background: var(--paper); }
.agent-mode__stage > span { color: var(--terracotta); font: 600 10px/1.4 var(--mono); }
.agent-mode__stage h4 { max-width: 10ch; margin: 0; font: 500 clamp(38px,5vw,68px)/1.08 var(--serif); }
.agent-mode__stage > p { grid-column: 2; max-width: 50ch; color: var(--ink-soft); }
.agent-mode__stage dl { grid-column: 3; grid-row: 1 / span 2; margin: 0; }
.agent-mode__stage dl > div { padding: 12px 0; border-top: 1px solid var(--rule); }
.agent-mode__stage dt { color: var(--terracotta); font: 600 9px/1.6 var(--mono); }
.agent-mode__stage dd { margin: 4px 0 0; }
.lobster-explainer { display: grid; grid-template-columns: 160px 1fr; gap: 34px; margin-top: 100px; padding-top: 28px; border-top: 1px solid var(--ink); }
.lobster-mark { display: grid; place-items: center; width: 130px; aspect-ratio: 1; border: 1px solid var(--terracotta); border-radius: 50%; font-size: 62px; }
.lobster-explainer > div:nth-child(2) > span { color: var(--terracotta); font: 600 10px/1 var(--mono); }
.lobster-explainer h4 { margin: 18px 0; font: 500 clamp(34px,4.5vw,62px)/1.1 var(--serif); }
.lobster-explainer > div:nth-child(2) > p { max-width: 60ch; color: var(--ink-soft); }
.lobster-formula { grid-column: 2; display: flex; align-items: center; overflow-x: auto; margin-top: 24px; padding: 20px 0; border-top: 1px solid var(--rule-strong); }
.lobster-formula b { min-width: max-content; font-size: 13px; }
.lobster-formula i { margin: 0 14px; color: var(--terracotta); font-style: normal; }
.always-on-boundary { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; margin-top: 80px; padding: 36px 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.always-on-boundary blockquote { margin: 0; font: 500 clamp(30px,4vw,56px)/1.25 var(--serif); }
.always-on-boundary p { margin: 0; color: var(--ink-soft); }
.source-notes { display: flex; flex-wrap: wrap; gap: 18px 28px; align-items: center; margin-top: 36px; }
.source-notes span { color: var(--terracotta); font: 600 9px/1 var(--mono); }
.source-notes a { font-size: 12px; text-underline-offset: 4px; }

/* Skill */
.skill-section { background: var(--ink); color: var(--paper); max-width: none; }
.skill-section > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.skill-section .concept-head > p:last-child { color: rgba(244,239,230,.66); }
.skill-builder { display: grid; grid-template-columns: 1.2fr .8fr; gap: 30px; }
.skill-builder__form { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.skill-builder__form label { display: grid; gap: 10px; padding: 20px; border: 1px solid rgba(244,239,230,.16); border-radius: 16px; font: 600 10px/1 var(--mono); letter-spacing: .08em; color: var(--terracotta-soft); }
.skill-builder__form input, .skill-builder__form textarea { width: 100%; border: 0; resize: vertical; background: transparent; color: var(--paper); font: 400 14px/1.65 var(--sans); }
.skill-builder__form textarea { min-height: 90px; }
.skill-builder__sheet { padding: clamp(28px,4vw,52px); background: var(--paper); color: var(--ink); border-radius: 4px; box-shadow: 20px 24px 0 rgba(244,239,230,.07); transform: rotate(1deg); }
.skill-builder__sheet > span { font: 600 10px/1 var(--mono); color: var(--terracotta); }
.skill-builder__sheet h4 { margin: 38px 0 24px; font: 500 clamp(30px,4vw,54px)/1.1 var(--serif); }
.skill-builder__sheet ol { margin: 0; padding: 0; list-style: none; counter-reset: step; }
.skill-builder__sheet li { counter-increment: step; padding: 12px 0; border-bottom: 1px solid var(--rule); }
.skill-builder__sheet li::before { content: "0" counter(step); margin-right: 16px; color: var(--terracotta); font: 600 9px/1 var(--mono); }
.skill-builder__sheet p { margin-top: 28px; font-weight: 600; }

/* Recaps */
.recap { max-width: none; background: var(--paper-deep); }
.recap > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.concept-ribbon { display: flex; align-items: stretch; overflow-x: auto; padding-bottom: 16px; }
.concept-ribbon span { min-width: 102px; display: grid; align-content: center; gap: 5px; padding: 16px 10px; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); font: 500 18px/1 var(--serif); }
.concept-ribbon small { font: 500 9px/1 var(--mono); color: var(--ink-faint); }
.concept-ribbon i { display: grid; place-items: center; min-width: 24px; font-style: normal; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); color: var(--terracotta); }
.large-quote { max-width: 26ch !important; margin-top: 100px !important; margin-bottom: 0 !important; padding: 0; border: 0; font: 500 clamp(34px,5vw,72px)/1.22 var(--serif); letter-spacing: -.035em; }

/* Codex interface */
.codex-interface { background: #e5e8e6; max-width: none; }
.codex-interface > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.codex-definition { display: grid; grid-template-columns: 1.25fr .75fr; gap: clamp(34px,7vw,100px); padding: 34px 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.codex-definition blockquote { max-width: 30ch; margin: 0; font: 500 clamp(28px,3.3vw,48px)/1.35 var(--serif); letter-spacing: -.025em; }
.codex-definition > div { display: grid; grid-template-columns: 110px 1fr; gap: 12px 18px; align-content: center; }
.codex-definition span { color: var(--cobalt); font: 600 10px/1.55 var(--mono); letter-spacing: .08em; }
.codex-definition b { font-weight: 500; }
.surface-strip { display: grid; grid-template-columns: repeat(4,1fr); margin-top: 70px; border-top: 1px solid var(--ink); }
.surface-strip article { min-height: 220px; padding: 24px 22px 22px 0; border-right: 1px solid var(--rule); display: flex; flex-direction: column; }
.surface-strip article + article { padding-left: 22px; }
.surface-strip b { font: 600 11px/1 var(--mono); color: var(--cobalt); letter-spacing: .14em; }
.surface-strip span { margin-top: 62px; font: 500 24px/1.3 var(--serif); }
.surface-strip small { margin-top: 10px; color: var(--ink-soft); line-height: 1.55; }
.section-subhead { display: grid; grid-template-columns: .45fr 1.15fr .7fr; gap: 30px; align-items: end; margin: 120px 0 34px; padding-top: 24px; border-top: 1px solid var(--ink); }
.section-subhead > span { color: var(--cobalt); font: 600 10px/1 var(--mono); letter-spacing: .12em; }
.section-subhead h4 { max-width: 18ch; margin: 0; font: 500 clamp(30px,4vw,54px)/1.15 var(--serif); }
.section-subhead p { margin: 0; color: var(--ink-soft); font-size: 13px; }
.codex-ui-lab { position: relative; }
.codex-window { position: relative; min-height: 680px; display: grid; grid-template-columns: 190px minmax(420px,1fr) 270px; grid-template-rows: 42px 1fr 170px; grid-template-areas: "bar bar bar" "side thread inspect" "side terminal inspect"; overflow: hidden; border: 1px solid #2d3030; border-radius: 20px; background: #171919; color: #e9ebe8; box-shadow: 0 38px 85px -42px rgba(23,23,20,.78); font-size: 12px; line-height: 1.5; }
.codex-window__bar { grid-area: bar; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 0 14px; border-bottom: 1px solid #303434; background: #202222; }
.codex-window__bar b { font-weight: 600; }
.codex-window__bar small { justify-self: end; color: #7e8582; font: 500 9px/1 var(--mono); }
.window-dots { display: flex; gap: 6px; }
.window-dots i { width: 8px; height: 8px; border-radius: 50%; background: #555a58; }
.window-dots i:first-child { background: #b85f43; }
.codex-window__sidebar { grid-area: side; display: flex; flex-direction: column; gap: 6px; padding: 14px 10px; border-right: 1px solid #303434; background: #1d1f1f; transition: box-shadow .35s, background .35s; }
.codex-new { padding: 9px 10px; border: 1px solid #3b3f3e; border-radius: 8px; background: #272a29; }
.codex-window__sidebar > span { margin: 12px 8px 2px; color: #737a77; font: 600 9px/1 var(--mono); letter-spacing: .1em; }
.codex-window__sidebar > b { padding: 4px 8px; font-weight: 500; }
.codex-window__sidebar button { display: grid; grid-template-columns: 1fr auto; gap: 6px; padding: 10px 8px; border: 0; border-radius: 7px; background: transparent; color: #9ea5a1; cursor: default; text-align: left; font-size: 11px; }
.codex-window__sidebar button.is-current { background: #292d2c; color: #f0f1ef; }
.codex-window__sidebar button i { color: #69716d; font: 500 8px/1.5 var(--mono); font-style: normal; }
.codex-window__thread { grid-area: thread; min-width: 0; padding: 24px clamp(24px,4vw,50px); overflow: hidden; transition: box-shadow .35s, background .35s; }
.thread-kicker { display: flex; justify-content: space-between; padding-bottom: 14px; border-bottom: 1px solid #303434; color: #7e8582; font: 500 9px/1 var(--mono); }
.thread-request { display: grid; grid-template-columns: 26px 1fr; gap: 12px; padding: 22px 0; }
.thread-request b { display: grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; background: #ece8df; color: #171919; font-size: 10px; }
.thread-request p { margin: 0; color: #d6dad7; }
.thread-plan { margin-left: 38px; padding: 16px; border: 1px solid #343837; border-radius: 10px; background: #1d2020; }
.thread-plan > div { display: flex; justify-content: space-between; }
.thread-plan small { color: #8a918e; }
.thread-plan ol { margin: 12px 0 0; padding: 0; list-style: none; }
.thread-plan li { position: relative; padding: 6px 0 6px 22px; color: #8d9491; }
.thread-plan li::before { content: "○"; position: absolute; left: 0; color: #606764; }
.thread-plan li.is-done { color: #b3bab6; text-decoration: line-through; text-decoration-color: #5d6461; }
.thread-plan li.is-done::before { content: "✓"; color: #72a084; }
.thread-plan li.is-running { color: #f0f1ef; }
.thread-plan li.is-running::before { content: "●"; color: #d9a08d; }
.codex-window__inspect { grid-area: inspect; padding: 14px; border-left: 1px solid #303434; background: #1b1d1d; transition: box-shadow .35s, background .35s; }
.inspect-tabs { display: flex; gap: 18px; padding: 4px 2px 13px; border-bottom: 1px solid #303434; }
.inspect-tabs b { color: #e7e9e6; }
.inspect-tabs span { color: #6e7572; }
.file-change { display: grid; grid-template-columns: 20px 1fr; gap: 3px 6px; padding: 10px 2px; border-bottom: 1px solid #2a2e2d; }
.file-change i { grid-row: 1 / span 2; color: #72a084; font-style: normal; }
.file-change span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: #c6cbc8; }
.file-change small { color: #6f7673; }
.inspect-summary { margin-top: 22px; padding: 14px; border: 1px solid #343837; border-radius: 9px; }
.inspect-summary span { color: #727976; font: 500 9px/1 var(--mono); }
.inspect-summary b { display: block; margin-top: 12px; font-weight: 500; line-height: 1.8; }
.codex-window__terminal { grid-area: terminal; padding: 12px 18px; border-top: 1px solid #303434; background: #111313; transition: box-shadow .35s, background .35s; }
.codex-window__terminal > div { display: flex; justify-content: space-between; padding-bottom: 10px; color: #707774; font: 500 9px/1 var(--mono); }
.codex-window__terminal code { display: block; padding: 3px 0; color: #aeb6b1; font: 10px/1.5 var(--mono); }
.codex-window__terminal code i { color: #d9a08d; font-style: normal; }
.codex-window__terminal code b { color: #72a084; }
.codex-window__terminal code em { display: inline-block; width: 6px; height: 6px; margin-right: 6px; border-radius: 50%; background: #d9a08d; animation: terminal-pulse 1.2s infinite; }
@keyframes terminal-pulse { 50% { opacity: .3; } }
.codex-window__permission { position: absolute; z-index: 4; left: 50%; top: 50%; width: min(420px,75%); padding: 24px; border: 1px solid #494e4c; border-radius: 13px; background: #242727; box-shadow: 0 30px 90px rgba(0,0,0,.5); opacity: 0; pointer-events: none; transform: translate(-50%,-45%) scale(.96); transition: opacity .35s, transform .35s; }
.codex-window__permission span { color: #d9a08d; font: 600 9px/1 var(--mono); letter-spacing: .1em; }
.codex-window__permission b { display: block; margin: 12px 0 24px; font-size: 15px; }
.codex-window__permission div { display: flex; justify-content: flex-end; gap: 8px; }
.codex-window__permission button { padding: 8px 12px; border: 1px solid #555b58; border-radius: 7px; background: transparent; color: #e9ebe8; font-size: 10px; }
.codex-window__permission button:last-child { background: #e9ebe8; color: #171919; }
.codex-window[data-phase="task"] .codex-window__sidebar,
.codex-window[data-phase="plan"] .thread-plan,
.codex-window[data-phase="run"] .codex-window__terminal,
.codex-window[data-phase="proof"] .codex-window__inspect { box-shadow: inset 0 0 0 2px #d9a08d, 0 0 28px rgba(217,160,141,.12); background-color: #242827; }
.codex-window[data-phase="permission"]::after { content: ""; position: absolute; inset: 42px 0 0; z-index: 3; background: rgba(9,10,10,.64); backdrop-filter: blur(2px); }
.codex-window[data-phase="permission"] .codex-window__permission { opacity: 1; pointer-events: auto; transform: translate(-50%,-50%) scale(1); }
.codex-ui-lab__controls { display: grid; grid-template-columns: repeat(5,1fr); margin-top: 18px; border-top: 1px solid var(--ink); }
.codex-ui-lab__controls button { display: grid; grid-template-columns: auto 1fr; gap: 12px; align-items: center; padding: 16px; border: 0; border-right: 1px solid var(--rule); background: transparent; cursor: pointer; text-align: left; }
.codex-ui-lab__controls button:hover, .codex-ui-lab__controls button.is-active { background: var(--paper-light); }
.codex-ui-lab__controls b { color: var(--cobalt); font: 600 9px/1 var(--mono); }
.codex-ui-lab__controls span { font-weight: 600; }
.codex-ui-lab__readout { display: grid; grid-template-columns: 160px 1fr; gap: 26px; min-height: 100px; padding: 22px 0; border-top: 1px solid var(--rule); }
.codex-ui-lab__readout span { color: var(--cobalt); font: 600 10px/1.6 var(--mono); }
.codex-ui-lab__readout p { max-width: 58ch; margin: 0; color: var(--ink-soft); }

/* Codex intro */
.compare-table { border-top: 1px solid var(--ink); }
.compare-table > div { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--rule); }
.compare-table span { padding: 18px 14px 18px 0; }
.compare-table span + span { padding-left: 24px; border-left: 1px solid var(--rule); color: var(--cobalt); font-weight: 600; }
.compare-table__head { font: 600 11px/1 var(--mono); letter-spacing: .12em; color: var(--ink-faint); }
.codex-actions { margin-top: 90px; display: grid; grid-template-columns: .8fr 1.2fr; min-height: 580px; border: 1px solid var(--rule-strong); border-radius: 26px; overflow: hidden; }
.codex-actions__rail { padding: 22px; display: grid; gap: 5px; border-right: 1px solid var(--rule); }
.codex-actions__rail button { display: grid; grid-template-columns: 60px 1fr; gap: 5px 16px; align-items: center; padding: 20px; border: 1px solid transparent; border-radius: 14px; background: transparent; cursor: pointer; text-align: left; }
.codex-actions__rail button:hover { border-color: var(--rule); }
.codex-actions__rail button.is-active { background: var(--ink); color: var(--paper); }
.codex-actions__rail b { grid-row: 1 / span 2; font: 500 36px/1 var(--serif); }
.codex-actions__rail small { color: inherit; opacity: .6; }
.codex-actions__stage { position: relative; padding: clamp(38px,6vw,78px); display: grid; align-content: center; background: var(--paper-light); overflow: hidden; }
.codex-actions__stage::before { content: ""; position: absolute; width: 440px; height: 440px; right: -210px; top: -210px; border: 1px solid var(--cobalt); border-radius: 50%; opacity: .18; }
.codex-actions__stage > span { font: 600 10px/1 var(--mono); letter-spacing: .12em; color: var(--cobalt); }
.codex-actions__stage h4 { max-width: 12ch; margin: 26px 0 18px; font: 500 clamp(36px,5vw,68px)/1.1 var(--serif); }
.codex-actions__stage p { max-width: 42ch; color: var(--ink-soft); }
.artifact-list { display: flex; gap: 9px; margin-top: 38px; }
.artifact-list i { width: 54px; height: 68px; border: 1px solid var(--rule-strong); background: var(--paper); box-shadow: 6px 7px 0 rgba(49,92,139,.08); transform: rotate(var(--r, -2deg)); }
.artifact-list i:nth-child(2) { --r: 1deg; }
.artifact-list i:nth-child(3) { --r: -1deg; }
.artifact-list i:nth-child(4) { --r: 2deg; }
.artifact-list i:nth-child(5) { --r: 0deg; }

/* Task anatomy */
.task-anatomy { background: var(--paper-light); max-width: none; }
.task-anatomy > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.task-transform { display: grid; grid-template-columns: .8fr auto 1.2fr; gap: 26px; align-items: stretch; }
.task-transform__raw, .task-transform__sheet { min-height: 570px; padding: clamp(28px,4vw,50px); border: 1px solid var(--rule-strong); border-radius: 22px; }
.task-transform__raw { display: flex; flex-direction: column; justify-content: center; background: var(--paper); }
.task-transform__raw > span, .task-transform__sheet > span { color: var(--terracotta); font: 600 10px/1 var(--mono); letter-spacing: .12em; }
.task-transform__raw blockquote { margin: 34px 0 50px; font: 500 clamp(32px,4vw,56px)/1.3 var(--serif); }
.task-transform__raw button { align-self: flex-start; padding: 11px 17px; border: 1px solid var(--ink); border-radius: 999px; background: transparent; cursor: pointer; transition: background .3s, color .3s; }
.task-transform__raw button:hover { background: var(--ink); color: var(--paper); }
.task-transform__arrow { display: grid; place-items: center; color: var(--terracotta); font: 400 44px/1 var(--serif); }
.task-transform__sheet { background: var(--paper-deep); transition: opacity .5s, filter .5s, transform .5s var(--ease); opacity: .25; filter: blur(3px); transform: translateX(-12px); }
.task-transform.is-revealed .task-transform__sheet { opacity: 1; filter: none; transform: none; }
.task-transform__sheet ol { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; margin: 28px 0 0; padding: 0; list-style: none; }
.task-transform__sheet li { min-height: 135px; padding: 18px 0; border-top: 1px solid var(--rule-strong); }
.task-transform__sheet b { font: 500 26px/1.2 var(--serif); }
.task-transform__sheet p { margin: 10px 0 0; color: var(--ink-soft); font-size: 13px; }
.task-memory { display: flex; align-items: stretch; overflow-x: auto; margin-top: 42px; }
.task-memory span { min-width: 120px; padding: 16px; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); text-align: center; font-weight: 600; }
.task-memory i { display: grid; place-items: center; min-width: 26px; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); color: var(--terracotta); font-style: normal; }

/* Task fit */
.task-fit { background: var(--paper-deep); max-width: none; }
.task-fit > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.fit-checker { display: grid; grid-template-columns: 1.2fr .8fr; gap: 60px; align-items: center; }
.fit-checker__checks { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.fit-checker__checks label { padding: 18px; border: 1px solid var(--rule); border-radius: 12px; background: rgba(250,247,241,.45); cursor: pointer; }
.fit-checker__checks input { margin-right: 10px; accent-color: var(--cobalt); }
.fit-checker__score { display: grid; grid-template-columns: auto auto; align-items: end; justify-content: start; }
.fit-checker__score strong { font: 400 clamp(100px,14vw,190px)/.8 var(--serif); letter-spacing: -.08em; }
.fit-checker__score > span { font: 500 28px/1 var(--serif); color: var(--cobalt); }
.fit-checker__score p, .fit-checker__score small { grid-column: 1 / -1; }
.fit-checker__score p { margin: 28px 0 6px; font: 500 23px/1.4 var(--serif); }
.fit-checker__score small { max-width: 36ch; color: var(--ink-soft); }

/* 3D stage */
.three-d-stage { background: #e8e5df; max-width: none; }
.three-d-stage > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.three-d-visual img { aspect-ratio: 16/9; object-fit: cover; }
.demo-brief { display: grid; grid-template-columns: 150px 1fr; gap: 20px; margin-top: 36px; padding: 26px 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.demo-brief span { font: 600 10px/1 var(--mono); color: var(--cobalt); letter-spacing: .12em; }
.demo-brief p { max-width: 56ch; margin: 0; font: 500 22px/1.5 var(--serif); }
.execution-stage { margin-top: 80px; display: grid; grid-template-columns: .9fr 1.1fr; min-height: 620px; border: 1px solid var(--rule-strong); border-radius: 26px; overflow: hidden; background: rgba(244,239,230,.7); }
.execution-stage__steps { list-style: none; margin: 0; padding: 22px; border-right: 1px solid var(--rule); }
.execution-stage__steps li { display: grid; grid-template-columns: 40px 1fr; gap: 6px 14px; padding: 17px; border-bottom: 1px solid var(--rule); opacity: .52; transition: opacity .4s, background .4s, transform .4s; }
.execution-stage__steps li.is-active { opacity: 1; background: var(--paper-light); transform: translateX(6px); }
.execution-stage__steps li.is-past { opacity: .8; }
.execution-stage__steps b { grid-row: 1 / span 2; font: 600 10px/1 var(--mono); color: var(--cobalt); }
.execution-stage__steps span { font-weight: 600; }
.execution-stage__steps small { color: var(--ink-soft); }
.execution-stage__evidence { padding: clamp(38px,6vw,78px); display: grid; align-content: center; }
.execution-stage__evidence h4 { margin: 26px 0 16px; font: 500 clamp(36px,4.8vw,64px)/1.1 var(--serif); }
.execution-stage__evidence p { color: var(--ink-soft); max-width: 42ch; }
.evidence-checks { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 30px; }
.evidence-checks i { padding: 7px 10px; border: 1px solid var(--rule); border-radius: 999px; font-style: normal; font-size: 11px; color: var(--ink-faint); }
.evidence-checks i.is-done { color: var(--green); border-color: var(--green); background: rgba(72,107,87,.07); }
.execution-stage__evidence button { margin-top: 30px; justify-self: start; }
.live-strategy { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: 30px; background: var(--rule); border: 1px solid var(--rule); }
.live-strategy div, .live-strategy blockquote { margin: 0; padding: 28px; background: var(--paper); }
.live-strategy span { font: 600 10px/1 var(--mono); color: var(--cobalt); }
.live-strategy p { margin: 10px 0 0; }
.live-strategy blockquote { grid-column: 1 / -1; font: 500 clamp(24px,3vw,40px)/1.4 var(--serif); }

/* Visual transfer */
.software-columns { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.software-columns article { min-height: 520px; padding: clamp(26px,4vw,48px); display: grid; align-content: start; background: var(--paper); }
.software-columns span { font: 600 10px/1 var(--mono); color: var(--cobalt); letter-spacing: .14em; }
.software-columns h4 { margin: 36px 0 20px; font: 500 clamp(28px,3.2vw,46px)/1.1 var(--serif); }
.software-columns ul { margin: 0 0 34px; padding: 0; list-style: none; }
.software-columns li { padding: 9px 0; border-bottom: 1px solid var(--rule); color: var(--ink-soft); }
.software-columns b { margin-top: auto; padding-top: 22px; border-top: 1px solid var(--ink); line-height: 1.55; }

/* Business */
.business-section { background: var(--ink); color: var(--paper); max-width: none; }
.business-section > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.business-section .section-lead { color: rgba(244,239,230,.62); }
.business-tabs { display: grid; grid-template-columns: .7fr 1.3fr; min-height: 700px; border: 1px solid rgba(244,239,230,.18); border-radius: 26px; overflow: hidden; }
.business-tabs__nav { padding: 20px; display: grid; align-content: start; gap: 5px; border-right: 1px solid rgba(244,239,230,.15); }
.business-tabs__nav button { padding: 20px; border: 1px solid transparent; border-radius: 12px; background: transparent; color: rgba(244,239,230,.6); cursor: pointer; text-align: left; }
.business-tabs__nav button b { display: inline-block; width: 34px; color: var(--terracotta-soft); font: 600 9px/1 var(--mono); }
.business-tabs__nav button:hover { border-color: rgba(244,239,230,.15); }
.business-tabs__nav button.is-active { background: var(--paper); color: var(--ink); }
.business-tabs__panel { padding: clamp(34px,6vw,76px); display: grid; align-content: center; }
.business-tabs__panel > span { color: var(--terracotta-soft); }
.business-tabs__panel h4 { max-width: 11ch; margin: 26px 0 36px; font: 500 clamp(38px,5vw,70px)/1.08 var(--serif); }
.business-tabs__panel > div { display: grid; grid-template-columns: 90px 1fr; gap: 18px; padding: 14px 0; border-top: 1px solid rgba(244,239,230,.15); }
.business-tabs__panel p, .business-tabs__panel b { margin: 0; }
.business-tabs__panel p { color: var(--terracotta-soft); font: 600 10px/1.8 var(--mono); }
.business-tabs__panel b { font-weight: 400; }

/* Work patterns */
.work-patterns { background: #e7e2d8; max-width: none; }
.work-patterns > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.pattern-rail { display: grid; grid-template-columns: repeat(5,1fr); border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.pattern-rail article { min-height: 430px; padding: 24px 22px; border-right: 1px solid var(--rule); display: flex; flex-direction: column; transition: background .35s, transform .35s var(--ease); }
.pattern-rail article:hover { background: var(--paper-light); transform: translateY(-5px); }
.pattern-rail span { color: var(--cobalt); font: 600 9px/1 var(--mono); }
.pattern-rail h4 { margin: 68px 0 18px; font: 500 clamp(34px,4vw,54px)/1 var(--serif); }
.pattern-rail p { color: var(--ink-soft); font-size: 14px; }
.pattern-rail b { margin-top: auto; padding-top: 20px; border-top: 1px solid var(--rule); font-size: 13px; }
.pattern-question { display: grid; grid-template-columns: 180px 1fr; gap: 30px; align-items: start; margin-top: 70px; padding-top: 24px; border-top: 1px solid var(--ink); }
.pattern-question span { color: var(--cobalt); font: 600 10px/1 var(--mono); letter-spacing: .12em; }
.pattern-question p { max-width: 30ch; margin: 0; font: 500 clamp(30px,4vw,58px)/1.28 var(--serif); }

/* Risk */
.risk-game { display: grid; grid-template-columns: 220px 1fr; gap: 34px; }
.risk-lights { display: grid; align-content: start; gap: 8px; }
.risk-lights span { padding: 14px 16px; border-radius: 10px; color: white; font-size: 13px; }
.risk-green { background: var(--green); }
.risk-yellow { background: var(--yellow); }
.risk-red { background: var(--red); }
.risk-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; }
.risk-cards button { min-height: 132px; padding: 20px; border: 1px solid var(--rule-strong); border-radius: 14px; background: transparent; cursor: pointer; font: 500 18px/1.5 var(--serif); transition: transform .4s var(--ease), background .4s, border-color .4s; }
.risk-cards button:hover { transform: translateY(-3px); border-color: var(--ink); }
.risk-cards button.is-green { background: rgba(72,107,87,.12); border-color: var(--green); }
.risk-cards button.is-yellow { background: rgba(183,135,50,.12); border-color: var(--yellow); }
.risk-cards button.is-red { background: rgba(157,70,60,.12); border-color: var(--red); }
.risk-readout { grid-column: 2; min-height: 70px; padding: 20px 0; border-top: 1px solid var(--rule-strong); font: 500 20px/1.45 var(--serif); }
.four-changes { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.four-changes div { min-height: 230px; padding: 28px; background: var(--paper-deep); }
.four-changes b { font: 600 10px/1 var(--mono); color: var(--cobalt); }
.four-changes p { margin: 55px 0 0; font: 500 24px/1.4 var(--serif); }

/* Pilot path */
.pilot-path { background: var(--paper-deep); max-width: none; }
.pilot-path > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.pilot-levels { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.pilot-levels article { min-height: 390px; padding: 30px; display: flex; flex-direction: column; background: var(--paper-deep); }
.pilot-levels article.is-current { background: var(--ink); color: var(--paper); }
.pilot-levels span { color: var(--terracotta); font: 600 9px/1 var(--mono); letter-spacing: .12em; }
.pilot-levels article.is-current span { color: var(--terracotta-soft); }
.pilot-levels h4 { margin: 64px 0 20px; font: 500 clamp(28px,3vw,42px)/1.1 var(--serif); }
.pilot-levels p { color: var(--ink-soft); font-size: 14px; }
.pilot-levels article.is-current p { color: rgba(244,239,230,.65); }
.pilot-levels b { margin-top: auto; padding-top: 20px; border-top: 1px solid currentColor; font-size: 13px; }
.pilot-evidence { display: grid; grid-template-columns: 1.1fr repeat(4,1fr); margin-top: 34px; border-top: 1px solid var(--ink); }
.pilot-evidence > span, .pilot-evidence > div { padding: 22px 18px 22px 0; border-right: 1px solid var(--rule); }
.pilot-evidence > span { color: var(--cobalt); font: 600 10px/1.6 var(--mono); }
.pilot-evidence b, .pilot-evidence small { display: block; }
.pilot-evidence small { margin-top: 6px; color: var(--ink-soft); }

/* Judgment traps */
.judgment-traps { background: #dad7cf; max-width: none; }
.judgment-traps > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.trap-lab { display: grid; grid-template-columns: .8fr 1.2fr; min-height: 600px; border: 1px solid var(--ink); border-radius: 24px; overflow: hidden; background: var(--paper); }
.trap-lab__buttons { display: grid; border-right: 1px solid var(--rule-strong); }
.trap-lab__buttons button { display: grid; align-content: center; gap: 8px; padding: 26px; border: 0; border-bottom: 1px solid var(--rule); background: transparent; cursor: pointer; text-align: left; }
.trap-lab__buttons button:hover, .trap-lab__buttons button.is-active { background: var(--ink); color: var(--paper); }
.trap-lab__buttons b { font: 500 25px/1.25 var(--serif); }
.trap-lab__buttons span { color: inherit; opacity: .62; font-size: 13px; }
.trap-lab__stage { display: grid; align-content: center; padding: clamp(38px,6vw,82px); }
.trap-lab__stage > span { color: var(--terracotta); font: 600 10px/1 var(--mono); letter-spacing: .12em; }
.trap-lab__stage blockquote { max-width: 19ch; margin: 34px 0 48px; font: 500 clamp(32px,4.2vw,60px)/1.25 var(--serif); letter-spacing: -.03em; }
.trap-lab__stage > div { display: grid; grid-template-columns: 100px 1fr; gap: 22px; padding-top: 20px; border-top: 1px solid var(--ink); }
.trap-lab__stage > div b { color: var(--terracotta); font: 600 10px/1.7 var(--mono); }
.trap-lab__stage > div p { margin: 0; color: var(--ink-soft); }

/* Method */
.method-wheel { grid-column: 9 / -1; display: grid; grid-template-columns: 1fr 1fr; align-self: end; border: 1px solid rgba(244,239,230,.22); border-radius: 50%; aspect-ratio: 1; padding: 18%; transform: rotate(4deg); }
.method-wheel span { display: grid; place-items: center; text-align: center; }
.method-wheel b { display: block; font: 500 clamp(34px,4vw,54px)/1 var(--serif); }
.method-wheel small { font-size: 10px; opacity: .6; }
.two-paths { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.two-paths > div { min-height: 430px; padding: clamp(28px,5vw,58px); border: 1px solid var(--rule-strong); border-radius: 24px; }
.two-paths__bad { background: rgba(157,70,60,.06); }
.two-paths__good { background: rgba(72,107,87,.08); }
.two-paths span { font: 600 10px/1 var(--mono); letter-spacing: .12em; }
.two-paths ol { margin: 48px 0 30px; padding: 0; list-style: none; }
.two-paths li { padding: 13px 0; border-bottom: 1px solid var(--rule); font: 500 clamp(23px,2.5vw,34px)/1.3 var(--serif); }
.two-paths p { color: var(--ink-soft); }
.method-summary { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; margin-top: 80px; background: var(--rule); border: 1px solid var(--rule); }
.method-summary div { min-height: 250px; padding: 26px; background: var(--paper); }
.method-summary b { font: 500 56px/1 var(--serif); color: var(--terracotta); }
.method-summary span { display: block; margin: 34px 0 12px; font-weight: 600; }
.method-summary small { color: var(--ink-soft); }
.method-heading { display: grid; grid-template-columns: auto 1fr; gap: 32px; align-items: start; margin-bottom: clamp(55px,8vw,100px); }
.method-heading > span { display: grid; place-items: center; width: clamp(84px,10vw,132px); aspect-ratio: 1; border: 1px solid var(--terracotta); border-radius: 50%; font: 500 clamp(42px,5vw,70px)/1 var(--serif); color: var(--terracotta); }
.method-heading h3 { max-width: 12ch; }

/* Ask */
.ask-builder { display: grid; grid-template-columns: .7fr 1.3fr; gap: 30px; }
.ask-builder__questions { display: grid; align-content: start; gap: 8px; }
.ask-builder__questions button { padding: 20px; border: 1px solid var(--rule); border-radius: 14px; background: transparent; cursor: pointer; text-align: left; }
.ask-builder__questions button.is-active { background: var(--terracotta); color: white; border-color: var(--terracotta); }
.ask-builder__questions b, .ask-builder__questions small { display: block; }
.ask-builder__questions small { margin-top: 6px; opacity: .68; }
.ask-builder__case { min-height: 480px; padding: clamp(34px,6vw,70px); border-radius: 24px; background: var(--paper-deep); display: grid; align-content: center; }
.ask-builder__case > span, .ask-builder__case div > span { font: 600 10px/1 var(--mono); color: var(--terracotta); letter-spacing: .12em; }
.ask-builder__case blockquote { margin: 24px 0 34px; font: 500 clamp(32px,4.5vw,62px)/1.2 var(--serif); }
.ask-builder__case > button { justify-self: start; }
.ask-builder__case div { margin-top: 30px; padding-top: 24px; border-top: 1px solid var(--rule-strong); }
.ask-builder__case div p { margin-bottom: 0; font-size: 19px; }

.question-ladder { margin-top: 90px; border-top: 1px solid var(--ink); }
.question-ladder__head { display: grid; grid-template-columns: 180px 1fr; gap: 30px; padding: 22px 0 34px; }
.question-ladder__head span { color: var(--terracotta); font: 600 10px/1 var(--mono); letter-spacing: .12em; }
.question-ladder__head p { max-width: 55ch; margin: 0; color: var(--ink-soft); }
.question-ladder ol { margin: 0; padding: 0; list-style: none; }
.question-ladder li { display: grid; grid-template-columns: 150px 1fr 1.4fr; gap: 24px; align-items: start; padding: 22px 0; border-top: 1px solid var(--rule); }
.question-ladder b { color: var(--terracotta); font: 500 22px/1.3 var(--serif); }
.question-ladder span { font-weight: 600; }
.question-ladder small { color: var(--ink-soft); }

.prompt-template { max-width: 980px; margin-top: 46px; border-top: 1px solid var(--rule-strong); border-bottom: 1px solid var(--rule-strong); }
.prompt-template summary { padding: 22px 0; cursor: pointer; font-weight: 600; }
.prompt-template pre { margin: 0; padding: 28px; overflow-x: auto; white-space: pre-wrap; border: 1px solid var(--rule); border-radius: 14px; background: rgba(250,247,241,.5); font: 13px/1.75 var(--mono); }
.prompt-template button { margin: 16px 0 24px; }

/* Borrow */
.borrow-section { background: var(--paper-deep); max-width: none; }
.borrow-section > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.expert-visual img, .roundtable-visual img { aspect-ratio: 16/9; object-fit: cover; }
.expert-criteria { display: grid; grid-template-columns: repeat(3,1fr); margin: 32px 0 70px; border-top: 1px solid var(--ink); }
.expert-criteria div { padding: 22px 20px 22px 0; border-right: 1px solid var(--rule); }
.expert-criteria b { font: 500 22px/1.3 var(--serif); }
.expert-criteria p { margin: 8px 0 0; color: var(--ink-soft); font-size: 13px; }
.expert-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.expert-cards article { min-height: 390px; padding: clamp(28px,4vw,50px); border: 1px solid var(--rule-strong); border-radius: 20px; background: var(--paper); display: flex; flex-direction: column; }
.expert-cards span { font: 600 10px/1 var(--mono); color: var(--terracotta); letter-spacing: .1em; }
.expert-cards h4 { margin: 34px 0 18px; font: 500 clamp(30px,4vw,54px)/1.1 var(--serif); }
.expert-cards p { color: var(--ink-soft); }
.expert-cards a { margin-top: auto; font-size: 12px; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.expert-boundary { display: grid; grid-template-columns: 1fr auto 1fr; gap: 20px; align-items: center; margin-top: 48px; }
.expert-boundary blockquote { margin: 0; padding: 24px; border: 1px solid var(--rule); font: 500 21px/1.5 var(--serif); }
.expert-boundary i { font-style: normal; font-size: 40px; color: var(--terracotta); }

/* Debate */
.debate-section { background: #e7e2d8; max-width: none; }
.debate-section > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.model-seats { margin-top: 70px; }
.model-seats__head { display: flex; justify-content: space-between; gap: 24px; align-items: end; padding-bottom: 18px; border-bottom: 1px solid var(--ink); }
.model-seats__head p { margin: 0; font: 500 28px/1.4 var(--serif); }
.model-seats__head small { max-width: 42ch; color: var(--ink-soft); }
.model-seats__grid { display: grid; grid-template-columns: repeat(5,1fr); }
.model-seats__grid button { min-height: 220px; padding: 20px; border: 0; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); background: transparent; cursor: pointer; text-align: left; transition: background .4s var(--ease), transform .4s var(--ease); }
.model-seats__grid button:hover, .model-seats__grid button.is-active { background: var(--paper-light); transform: translateY(-3px); }
.model-seats__grid b { display: block; font: 500 clamp(24px,2.6vw,38px)/1 var(--serif); }
.model-seats__grid span { display: block; margin: 42px 0 8px; font-weight: 600; }
.model-seats__grid small { color: var(--ink-soft); line-height: 1.5; }
.model-seat__readout { min-height: 84px; padding: 22px 0; color: var(--ink-soft); }
.roundtable-lab { margin-top: 70px; display: grid; grid-template-columns: .8fr 1.2fr; min-height: 520px; border: 1px solid var(--rule-strong); border-radius: 26px; overflow: hidden; background: var(--paper); }
.roundtable-lab__steps { padding: 20px; display: grid; gap: 5px; border-right: 1px solid var(--rule); }
.roundtable-lab__steps button { display: grid; grid-template-columns: 38px 1fr; gap: 12px; align-items: center; padding: 18px; border: 1px solid transparent; border-radius: 12px; background: transparent; cursor: pointer; text-align: left; }
.roundtable-lab__steps button:hover { border-color: var(--rule); }
.roundtable-lab__steps button.is-active { background: var(--ink); color: var(--paper); }
.roundtable-lab__steps b { font: 600 10px/1 var(--mono); color: var(--terracotta-soft); }
.roundtable-lab__stage { display: grid; align-content: center; padding: clamp(38px,6vw,80px); }
.roundtable-lab__stage h4 { margin: 25px 0 16px; font: 500 clamp(36px,5vw,68px)/1.1 var(--serif); }
.roundtable-lab__stage p { color: var(--ink-soft); max-width: 42ch; }
.roundtable-lab__stage button { justify-self: start; margin-top: 24px; }
.evidence-lab { margin-top: 32px; display: grid; grid-template-columns: .7fr 1.3fr; gap: 30px; }
.evidence-lab__legend { display: grid; gap: 8px; }
.evidence-lab__legend span { display: grid; grid-template-columns: 36px 1fr; gap: 10px; align-items: center; padding: 12px; border: 1px solid var(--rule); border-radius: 10px; }
.evidence-lab__legend b { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--ink); color: var(--paper); }
.evidence-lab__cards { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.evidence-lab__cards button { min-height: 118px; padding: 18px; border: 1px solid var(--rule-strong); border-radius: 12px; background: transparent; cursor: pointer; text-align: left; }
.evidence-lab__cards button:hover { background: var(--paper-light); }
.evidence-lab__cards button.is-graded { border-color: var(--green); background: rgba(72,107,87,.08); }
.evidence-lab__readout { grid-column: 2; padding-top: 16px; border-top: 1px solid var(--rule-strong); font: 500 20px/1.4 var(--serif); }

/* Full method case */
.method-case { background: var(--paper-light); max-width: none; }
.method-case > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.case-brief { display: grid; grid-template-columns: 160px 1fr; gap: 22px; padding: 30px 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.case-brief > span { color: var(--terracotta); font: 600 10px/1 var(--mono); letter-spacing: .12em; }
.case-brief blockquote { max-width: 22ch; margin: 0; font: 500 clamp(34px,4.5vw,64px)/1.2 var(--serif); letter-spacing: -.03em; }
.case-brief > div { grid-column: 2; display: grid; grid-template-columns: 80px 1fr; gap: 20px; padding-top: 22px; border-top: 1px solid var(--rule); }
.case-brief > div b { color: var(--terracotta); font: 600 10px/1.7 var(--mono); }
.case-brief > div p { max-width: 58ch; margin: 0; color: var(--ink-soft); }
.method-case__lab { display: grid; grid-template-columns: .55fr 1.45fr; min-height: 630px; margin-top: 70px; border: 1px solid var(--rule-strong); border-radius: 24px; overflow: hidden; }
.method-case__steps { display: grid; border-right: 1px solid var(--rule); }
.method-case__steps button { display: grid; grid-template-columns: 70px 1fr; align-items: center; padding: 26px; border: 0; border-bottom: 1px solid var(--rule); background: transparent; cursor: pointer; text-align: left; }
.method-case__steps button:hover, .method-case__steps button.is-active { background: var(--ink); color: var(--paper); }
.method-case__steps b { grid-row: 1 / span 2; font: 500 46px/1 var(--serif); color: var(--terracotta); }
.method-case__steps span { font-weight: 600; }
.method-case__stage { display: grid; align-content: center; padding: clamp(38px,6vw,82px); background: var(--paper); }
.method-case__stage > span { color: var(--terracotta); font: 600 10px/1 var(--mono); letter-spacing: .12em; }
.method-case__stage h4 { max-width: 13ch; margin: 28px 0 18px; font: 500 clamp(38px,5vw,68px)/1.08 var(--serif); }
.method-case__stage > p { max-width: 56ch; color: var(--ink-soft); }
.method-case__stage dl { margin: 30px 0 0; }
.method-case__stage dl > div { display: grid; grid-template-columns: 100px 1fr; gap: 20px; padding: 12px 0; border-top: 1px solid var(--rule); }
.method-case__stage dt { color: var(--terracotta); font: 600 10px/1.7 var(--mono); }
.method-case__stage dd { margin: 0; }
.case-decision { display: grid; grid-template-columns: 1fr auto 1fr; gap: 26px; align-items: center; margin-top: 40px; }
.case-decision > div { min-height: 150px; padding: 26px; border-top: 1px solid var(--ink); }
.case-decision span, .case-decision b { display: block; }
.case-decision span { color: var(--terracotta); font: 600 10px/1 var(--mono); }
.case-decision b { margin-top: 30px; font: 500 26px/1.4 var(--serif); }
.case-decision i { color: var(--terracotta); font: 400 42px/1 var(--serif); font-style: normal; }

/* Action */
.act-section { background: var(--ink); color: var(--paper); max-width: none; }
.act-section > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.act-section .method-heading > span { color: var(--terracotta-soft); border-color: var(--terracotta-soft); }
.action-sheet { padding: clamp(26px,5vw,58px); border-radius: 4px; background: var(--paper); color: var(--ink); box-shadow: 22px 26px 0 rgba(244,239,230,.07); }
.action-sheet__head { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding-bottom: 18px; border-bottom: 1px solid var(--ink); }
.action-sheet__head span { font: 600 10px/1 var(--mono); letter-spacing: .16em; }
.action-sheet__head button { background: transparent; color: var(--ink); }
.action-sheet__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; margin-top: 26px; }
.action-sheet label { display: grid; gap: 8px; padding: 14px 0; border-bottom: 1px solid var(--rule); font: 600 10px/1 var(--mono); color: var(--terracotta); letter-spacing: .08em; }
.action-sheet label.wide { grid-column: 1 / -1; }
.action-sheet input, .action-sheet textarea { width: 100%; border: 0; resize: vertical; padding: 6px 0; background: transparent; color: var(--ink); font: 400 15px/1.55 var(--sans); }
.action-sheet textarea { min-height: 74px; }
.action-sheet__footer { display: flex; justify-content: space-between; gap: 20px; align-items: center; padding-top: 24px; }
.action-sheet__footer span { color: var(--ink-soft); font-size: 12px; }
.act-section .prompt-template { border-color: rgba(244,239,230,.25); }
.act-section .prompt-template pre { border-color: rgba(244,239,230,.15); background: rgba(244,239,230,.05); color: var(--paper); }

/* Review loop */
.review-loop { background: #dfe5e7; max-width: none; }
.review-loop > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.review-loop__diagram { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr auto 1fr; align-items: stretch; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.review-loop__diagram article { min-height: 330px; padding: 24px 18px; display: flex; flex-direction: column; }
.review-loop__diagram > i { display: grid; place-items: center; color: var(--terracotta); font-style: normal; }
.review-loop__diagram span { color: var(--cobalt); font: 600 9px/1 var(--mono); }
.review-loop__diagram h4 { margin: 70px 0 16px; font: 500 clamp(28px,3vw,42px)/1 var(--serif); }
.review-loop__diagram p { color: var(--ink-soft); font-size: 13px; }
.review-principle { max-width: 28ch; margin: 90px 0 0; padding: 0; border: 0; font: 500 clamp(34px,4.5vw,64px)/1.28 var(--serif); letter-spacing: -.03em; }

/* Exercise */
.exercise-flow { border-top: 1px solid var(--ink); }
.exercise-flow details { border-bottom: 1px solid var(--rule-strong); }
.exercise-flow summary { list-style: none; display: grid; grid-template-columns: 80px 1fr auto; gap: 20px; align-items: center; padding: 24px 0; cursor: pointer; }
.exercise-flow summary::-webkit-details-marker { display: none; }
.exercise-flow summary::after { content: "+"; font: 400 28px/1 var(--serif); }
.exercise-flow details[open] summary::after { content: "−"; }
.exercise-flow summary b { font: 500 42px/1 var(--serif); color: var(--terracotta); }
.exercise-flow summary span { font: 500 clamp(22px,2.5vw,34px)/1.3 var(--serif); }
.exercise-flow details p { max-width: 68ch; margin: 0 0 28px 100px; color: var(--ink-soft); }

/* Closing */
.closing { background: var(--paper-deep); max-width: none; }
.closing > * { max-width: 1264px; margin-left: auto; margin-right: auto; }
.closing-upgrades { display: grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.closing-upgrades article { min-height: 370px; padding: clamp(28px,4vw,48px); background: var(--paper-deep); }
.closing-upgrades span { font: 600 10px/1 var(--mono); color: var(--terracotta); letter-spacing: .12em; }
.closing-upgrades h3 { margin: 60px 0 18px; font: 500 clamp(30px,3.5vw,48px)/1.2 var(--serif); }
.closing-upgrades p { color: var(--ink-soft); }
.ten-lines { display: grid; grid-template-columns: .5fr 1.5fr; gap: 40px; margin-top: 120px; padding-top: 28px; border-top: 1px solid var(--ink); }
.ten-lines__head span { font: 600 10px/1 var(--mono); color: var(--terracotta); letter-spacing: .12em; }
.ten-lines__head h3 { margin: 16px 0; font: 500 clamp(64px,8vw,120px)/.9 var(--serif); }
.ten-lines ol { margin: 0; padding: 0; list-style: none; counter-reset: takeaway; }
.ten-lines li { counter-increment: takeaway; display: grid; grid-template-columns: 44px 1fr; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--rule); font-size: 17px; }
.ten-lines li::before { content: counter(takeaway, decimal-leading-zero); font: 600 10px/1.8 var(--mono); color: var(--terracotta); }
.first-action { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(30px,7vw,100px); margin-top: 120px; align-items: center; }
.first-action h3 { margin: 18px 0; font: 500 clamp(42px,5vw,72px)/1.08 var(--serif); }
.first-action__card { padding: clamp(30px,5vw,56px); background: var(--ink); color: var(--paper); border-radius: 22px; box-shadow: var(--shadow); }
.first-action__card > span { font: 600 10px/1 var(--mono); color: var(--terracotta-soft); letter-spacing: .12em; }
.first-action__card ol { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; list-style: none; padding: 0; margin: 30px 0; }
.first-action__card li { padding: 10px 0; border-bottom: 1px solid rgba(244,239,230,.15); }
.first-action__card p { color: rgba(244,239,230,.65); }
.final-line { max-width: 21ch !important; margin-top: 160px !important; margin-bottom: 160px !important; padding: 0; border: 0; font: 500 clamp(44px,6vw,90px)/1.18 var(--serif); letter-spacing: -.04em; }
.site-footer { display: flex; justify-content: space-between; gap: 30px; padding-top: 30px; border-top: 1px solid var(--ink); }
.site-footer > div:first-child { display: grid; }
.site-footer span { font: 600 10px/1 var(--mono); letter-spacing: .12em; }
.site-footer b { margin-top: 8px; font: 500 18px/1.4 var(--serif); }
.site-footer small { margin-top: 8px; color: var(--ink-faint); font: 500 9px/1 var(--mono); letter-spacing: .08em; }
.site-footer__links { display: flex; flex-wrap: wrap; gap: 22px; }
.site-footer__links a { font-size: 12px; text-underline-offset: 4px; }

/* Trainer controls */
.trainer-tools {
  position: fixed;
  z-index: 950;
  right: 20px;
  bottom: 20px;
  display: flex;
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  background: rgba(244,239,230,.9);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}
.trainer-tools button { min-width: 42px; height: 42px; padding: 0 13px; border: 0; border-radius: 999px; background: transparent; cursor: pointer; font-size: 12px; transition: background .25s, color .25s, transform .25s; }
.trainer-tools button:hover { background: var(--ink); color: var(--paper); transform: translateY(-2px); }
.trainer-tools button:active { transform: scale(.96); }
.keyboard-hint { position: fixed; z-index: 940; left: 50%; bottom: 26px; transform: translate(-50%, 80px); padding: 9px 14px; border-radius: 999px; background: var(--ink); color: var(--paper); font: 500 10px/1 var(--mono); opacity: 0; transition: transform .6s var(--ease), opacity .6s; pointer-events: none; }
.keyboard-hint.is-visible { transform: translate(-50%,0); opacity: .85; }
.show-all-answers [data-answer] { display: block !important; }

/* Responsive */
@media (max-width: 1120px) {
  .learning-spine { display: none; }
  .hero__title-wrap { grid-column: 1 / 11; }
  .hero__visual { grid-column: 5 / -1; }
  .poll-grid { grid-template-columns: 1fr 1fr; }
  .concept-head { grid-template-columns: 1fr; }
  .concept-head > p:last-child { margin-top: 10px; }
  .connector-lab { grid-template-columns: 1fr; }
  .connector-line { height: 34px; width: 1px; justify-self: center; }
  .connector-line i { transform: translateY(-100%); }
  .connector-lab.is-running .connector-line i { animation-name: line-run-y; }
  @keyframes line-run-y { to { transform: translateY(0); } }
  .connector-lab > button, .connector-log { grid-column: 1; }
  .connector-node { min-height: 210px; }
  .model-seats__grid { grid-template-columns: repeat(3,1fr); }
  .four-changes { grid-template-columns: 1fr 1fr; }
  .pattern-rail { grid-template-columns: repeat(3,1fr); }
  .pattern-rail article { min-height: 360px; }
  .term-drawers { grid-template-columns: repeat(2,1fr); }
  .agent-timeline__modes { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 820px) {
  body { font-size: 16px; }
  .site-nav__links { display: none; }
  .nav-menu { display: block; }
  .site-mark__name { display: none; }
  .section-pad { padding-top: 92px; padding-bottom: 92px; }
  .hero { min-height: auto; padding-top: 94px; grid-template-columns: 1fr; grid-template-rows: auto; }
  .hero__kicker, .hero__title-wrap, .hero__visual, .hero__routes, .hero__start { grid-column: 1; grid-row: auto; }
  .hero__title-wrap { padding: 10px 0 0; }
  .hero__visual { margin-top: 8px; }
  .hero__routes { grid-template-columns: 1fr; }
  .hero__routes a { grid-template-columns: 30px 70px 1fr; align-items: center; border-right: 0; border-bottom: 1px solid var(--rule); }
  .hero__start { justify-self: start; }
  .section-heading h2 { font-size: clamp(48px,13vw,72px); }
  .concept-head h3, .section-heading h3, .method-heading h3 { font-size: clamp(38px,10vw,58px); }
  .llm-map__head { grid-template-columns: 1fr; }
  .llm-map__grid { grid-template-columns: 1fr 1fr; }
  .llm-map__grid article { min-height: 150px; border-bottom: 1px solid var(--rule); }
  .opening-thesis, .bit-lab, .prediction-lab, .attention-demo, .context-desk, .prompt-compare,
  .agent-loop, .agent-parts, .term-sorter__lab, .skill-builder, .codex-definition, .codex-actions, .task-transform, .fit-checker, .execution-stage, .business-tabs,
  .risk-game, .two-paths, .trap-lab, .ask-builder, .roundtable-lab, .evidence-lab, .method-case__lab, .ten-lines, .first-action {
    grid-template-columns: 1fr;
  }
  .opening-thesis { gap: 20px; }
  .chapter-cover { min-height: 820px; grid-template-columns: 1fr; align-content: end; }
  .chapter-cover__copy, .chapter-cover__map, .chapter-cover__statement, .method-wheel { grid-column: 1; }
  .chapter-cover__copy h2 { font-size: clamp(60px,14vw,92px); }
  .chapter-cover__map, .chapter-cover__statement { margin-top: 50px; }
  .method-wheel { width: min(380px,90vw); margin-top: 50px; }
  .bit-lab__examples { grid-template-columns: repeat(4,1fr); }
  .token-legend { grid-template-columns: 1fr 1fr; }
  .prediction-lab { gap: 30px; }
  .attention-demo { gap: 28px; }
  .attention-readout { grid-column: 1; }
  .context-desk__materials { border-right: 0; border-bottom: 1px solid var(--rule); }
  .agent-parts__nav { grid-template-columns: 1fr 1fr; border-right: 0; border-bottom: 1px solid var(--rule); }
  .term-drawer__readout { grid-template-columns: 1fr; }
  .term-drawer__readout h4, .term-drawer__readout p { grid-column: 1; }
  .family-explorer__nav { display: flex; overflow-x: auto; }
  .family-explorer__nav button { min-width: 145px; }
  .family-explorer__panel header { grid-template-columns: 1fr; }
  .family-chain { display: flex; overflow-x: auto; }
  .family-chain article { min-width: 220px; }
  .family-chain i { min-width: 30px; }
  .term-sorter__terms { border-right: 0; border-bottom: 1px solid var(--rule); }
  .term-ambiguity, .agent-mode__stage, .lobster-explainer, .always-on-boundary { grid-template-columns: 1fr; }
  .agent-timeline__axis { display: none; }
  .agent-mode__stage p, .agent-mode__stage dl { grid-column: 1; }
  .agent-mode__stage dl { grid-row: auto; }
  .lobster-formula { grid-column: 1; }
  .prompt-transform { width: 100%; aspect-ratio: auto; border-radius: 999px; padding: 14px; }
  .skill-builder__form { grid-template-columns: 1fr; }
  .concept-ribbon { margin-right: calc(var(--pad) * -1); }
  .codex-actions__rail, .execution-stage__steps, .business-tabs__nav, .roundtable-lab__steps { border-right: 0; border-bottom: 1px solid var(--rule); }
  .codex-actions__rail, .execution-stage__steps { display: flex; overflow-x: auto; }
  .codex-actions__rail button { min-width: 220px; }
  .execution-stage__steps li { min-width: 210px; }
  .software-columns { grid-template-columns: 1fr; }
  .software-columns article { min-height: auto; }
  .surface-strip { grid-template-columns: 1fr 1fr; }
  .surface-strip article { min-height: 190px; }
  .section-subhead { grid-template-columns: 1fr; align-items: start; }
  .codex-window { grid-template-columns: 150px minmax(0,1fr); grid-template-rows: 42px 440px 180px auto; grid-template-areas: "bar bar" "side thread" "side terminal" "inspect inspect"; min-height: 920px; }
  .codex-window__inspect { min-height: 230px; border-left: 0; border-top: 1px solid #303434; }
  .codex-ui-lab__controls { overflow-x: auto; }
  .codex-ui-lab__controls button { min-width: 120px; }
  .codex-ui-lab__readout { grid-template-columns: 1fr; gap: 8px; }
  .task-transform__arrow { transform: rotate(90deg); }
  .task-transform__raw, .task-transform__sheet { min-height: auto; }
  .pattern-rail { grid-template-columns: 1fr 1fr; }
  .pilot-levels { grid-template-columns: 1fr 1fr; }
  .pilot-evidence { grid-template-columns: 1fr 1fr; }
  .pilot-evidence > span { grid-column: 1 / -1; }
  .business-tabs__nav { display: flex; overflow-x: auto; }
  .business-tabs__nav button { min-width: 140px; }
  .risk-readout, .evidence-lab__readout { grid-column: 1; }
  .risk-lights { grid-template-columns: repeat(3,1fr); }
  .risk-cards { grid-template-columns: 1fr 1fr; }
  .method-summary, .closing-upgrades { grid-template-columns: 1fr 1fr; }
  .expert-criteria, .expert-cards { grid-template-columns: 1fr; }
  .expert-boundary { grid-template-columns: 1fr; }
  .expert-boundary i { transform: rotate(90deg); justify-self: center; }
  .trap-lab__buttons { grid-template-columns: 1fr 1fr; border-right: 0; border-bottom: 1px solid var(--rule); }
  .question-ladder li { grid-template-columns: 120px 1fr; }
  .question-ladder small { grid-column: 2; }
  .case-brief { grid-template-columns: 1fr; }
  .case-brief > div { grid-column: 1; }
  .method-case__steps { grid-template-columns: repeat(4,1fr); border-right: 0; border-bottom: 1px solid var(--rule); }
  .method-case__steps button { grid-template-columns: 1fr; text-align: center; }
  .method-case__steps b { grid-row: auto; }
  .review-loop__diagram { grid-template-columns: 1fr; }
  .review-loop__diagram article { min-height: 210px; }
  .review-loop__diagram > i { min-height: 30px; transform: rotate(90deg); }
  .model-seats__grid { grid-template-columns: 1fr 1fr; }
  .evidence-lab__cards { grid-template-columns: 1fr; }
  .action-sheet__grid { grid-template-columns: 1fr; }
  .action-sheet label.wide { grid-column: 1; }
  .exercise-flow details p { margin-left: 0; }
  .site-footer { flex-direction: column; }
  .keyboard-hint { display: none; }
}

@media (max-width: 520px) {
  :root { --pad: 20px; }
  .site-nav { padding-inline: 20px; }
  .hero__kicker span:nth-child(2) { display: none; }
  .hero__title { font-size: clamp(50px,16vw,74px); }
  .hero__routes a { grid-template-columns: 24px 56px 1fr; }
  .poll-grid, .context-notes, .fit-checker__checks, .risk-cards, .method-summary, .expert-cards,
  .model-seats__grid, .action-sheet__grid, .closing-upgrades, .first-action__card ol, .four-changes {
    grid-template-columns: 1fr;
  }
  .question-stage { padding: 22px; }
  .question-stage__head { grid-template-columns: 1fr; }
  .poll-grid button { min-height: 98px; }
  .bit-lab__result strong { font-size: 98px; }
  .input-line { grid-template-columns: 1fr; }
  .token-steps { overflow-x: auto; }
  .token-steps button { min-width: 120px; }
  .token-legend { grid-template-columns: 1fr; }
  .llm-map__grid { grid-template-columns: 1fr; }
  .llm-map__grid article { min-height: 132px; border-right: 0; }
  .vector-row { grid-template-columns: 1fr; }
  .bit-row { grid-template-columns: 1fr; gap: 4px; }
  .desk-grid { grid-template-columns: 1fr 1fr; }
  .context-meter > div { grid-template-columns: 1fr; }
  .chapter-cover { min-height: 720px; }
  .chapter-cover__copy h2 { font-size: 58px; }
  .agent-loop__control { border-left: 0; border-top: 1px solid var(--rule); }
  .agent-parts__nav, .term-drawers, .agent-timeline__modes { grid-template-columns: 1fr; }
  .term-sorter__terms { grid-template-columns: 1fr 1fr; }
  .surface-strip, .task-transform__sheet ol, .pattern-rail, .pilot-levels, .trap-lab__buttons { grid-template-columns: 1fr; }
  .codex-definition > div { grid-template-columns: 1fr; }
  .codex-window { grid-template-columns: 1fr; grid-template-rows: 42px auto 180px auto auto; grid-template-areas: "bar" "thread" "terminal" "inspect" "side"; min-height: auto; }
  .codex-window__sidebar { min-height: 280px; border-right: 0; border-top: 1px solid #303434; }
  .codex-window__thread { padding: 20px; }
  .thread-plan { margin-left: 0; }
  .codex-window__bar { grid-template-columns: 1fr auto; }
  .codex-window__bar small { display: none; }
  .codex-window__permission { width: 88%; }
  .pattern-question, .question-ladder__head, .question-ladder li, .case-brief, .case-decision { grid-template-columns: 1fr; }
  .question-ladder small { grid-column: 1; }
  .case-decision i { transform: rotate(90deg); justify-self: center; }
  .method-case__steps { grid-template-columns: 1fr 1fr; }
  .method-case__stage dl > div { grid-template-columns: 1fr; gap: 4px; }
  .risk-lights { grid-template-columns: 1fr; }
  .model-seats__head { display: block; }
  .model-seats__head small { display: block; margin-top: 10px; }
  .method-heading { grid-template-columns: 1fr; }
  .method-heading > span { width: 86px; }
  .exercise-flow summary { grid-template-columns: 56px 1fr auto; }
  .trainer-tools { left: 12px; right: 12px; bottom: 12px; justify-content: center; }
  .trainer-tools button { flex: 1; padding-inline: 6px; }
  .final-line { margin-top: 100px !important; margin-bottom: 120px !important; }
}

@media (hover:hover) and (pointer:fine) {
  .media-frame:hover { box-shadow: inset 0 1px 0 rgba(255,255,255,.7), 0 0 0 1px var(--rule), 0 38px 78px -44px rgba(23,23,20,.52); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  .js .reveal { opacity: 1; transform: none; filter: none; }
  .title-line i { transform: none; }
  .spine-draw { stroke-dashoffset: 0; }
  [data-parallax], [data-tilt] { transform: none !important; }
}

@media print {
  .site-nav, .learning-spine, .trainer-tools, .keyboard-hint, .page-progress { display: none !important; }
  body { background: white; }
  body::before { display: none; }
  .chapter-cover { min-height: auto; break-before: page; color: black !important; background: white !important; }
  .section-pad { padding: 48px 30px; }
  .reveal { opacity: 1 !important; transform: none !important; filter: none !important; }
}