:root {
  --ink: #172238;
  --ink-2: #25314a;
  --paper: #f3efe6;
  --paper-2: #e8e2d7;
  --white: #fffdf8;
  --orange: #ef5a2f;
  --orange-dark: #c53f1e;
  --teal: #167a72;
  --lime: #d5e55c;
  --line: rgba(23, 34, 56, 0.2);
  --muted: #667085;
  --max: 1240px;
  --serif: Georgia, "Times New Roman", "Noto Serif SC", "Songti SC", serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 86px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a { color: inherit; }
button, input { font: inherit; }
::selection { color: var(--white); background: var(--orange); }

.section-shell { width: min(var(--max), calc(100% - 64px)); margin-inline: auto; }
.reading-progress { position: fixed; inset: 0 0 auto; height: 3px; z-index: 100; }
.reading-progress span { display: block; width: 0; height: 100%; background: var(--orange); }

.topbar {
  position: sticky;
  top: 0;
  z-index: 80;
  height: 72px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 28px;
  color: var(--ink);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}
.brand { justify-self: start; display: flex; align-items: center; gap: 12px; font-size: 13px; font-weight: 750; letter-spacing: .04em; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 35px; aspect-ratio: 1; color: var(--white); background: var(--ink); font-size: 11px; letter-spacing: .12em; }
.topnav { display: flex; align-items: center; gap: 26px; }
.topnav a { position: relative; color: #4b5568; font-size: 13px; font-weight: 650; text-decoration: none; }
.topnav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -8px; height: 2px; background: var(--orange); transition: right .2s ease; }
.topnav a:hover::after, .topnav a.active::after { right: 0; }
.topnav a.active { color: var(--ink); }
.icon-button { justify-self: end; width: 44px; height: 34px; padding: 0; color: var(--ink); background: transparent; border: 1px solid var(--ink); font-size: 11px; font-weight: 800; letter-spacing: .1em; cursor: pointer; }
.icon-button:hover { color: var(--white); background: var(--ink); }

.hero { min-height: calc(100vh - 72px); display: grid; grid-template-columns: 1.05fr .95fr; grid-template-rows: 1fr auto; gap: 40px 80px; align-items: center; padding-block: 68px 40px; }
.hero-copy { align-self: center; }
.eyebrow { display: flex; align-items: center; gap: 14px; margin: 0 0 26px; font-size: 11px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.eyebrow span:first-child { padding: 6px 10px; color: var(--white); background: var(--orange); }
.eyebrow span:last-child { color: var(--muted); }
.hero h1 { margin: 0; font-family: var(--serif); font-size: clamp(64px, 7.8vw, 118px); font-weight: 500; line-height: .81; letter-spacing: -.065em; }
.hero h1 em { color: var(--orange); font-weight: inherit; }
.dek { max-width: 640px; margin: 36px 0 0; color: #4c566b; font-size: clamp(18px, 1.6vw, 24px); line-height: 1.5; }
.hero-actions { display: flex; align-items: center; gap: 26px; margin-top: 34px; }
.primary-button { display: inline-flex; align-items: center; gap: 24px; padding: 13px 18px; color: var(--white); background: var(--ink); font-size: 13px; font-weight: 750; text-decoration: none; }
.primary-button span { color: var(--lime); font-size: 18px; }
.primary-button:hover { background: var(--orange); }
.text-link { font-size: 13px; font-weight: 700; text-underline-offset: 5px; }

.hero-board { position: relative; min-height: 520px; align-self: center; background: var(--ink); color: var(--white); overflow: hidden; }
.hero-board::before, .hero-board::after { content: ""; position: absolute; pointer-events: none; }
.hero-board::before { inset: 0; background-image: linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px); background-size: 48px 48px; }
.hero-board::after { width: 210px; height: 210px; right: -80px; top: -80px; border: 52px solid var(--orange); border-radius: 50%; opacity: .9; }
.board-label { position: absolute; left: 28px; top: 24px; font-size: 10px; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.loop-stage { position: absolute; z-index: 2; width: 118px; min-height: 100px; padding: 12px; background: var(--white); color: var(--ink); border-top: 5px solid var(--lime); }
.loop-stage b { display: block; margin-bottom: 10px; color: var(--orange); font-size: 10px; letter-spacing: .1em; }
.loop-stage span { display: block; font-family: var(--serif); font-size: 25px; line-height: 1; }
.loop-stage small { display: block; margin-top: 8px; color: var(--muted); font-size: 10px; }
.stage-goal { left: 42px; top: 92px; }
.stage-plan { right: 42px; top: 92px; }
.stage-act { right: 42px; bottom: 96px; }
.stage-check { left: 42px; bottom: 96px; }
.loop-arrow { position: absolute; z-index: 2; color: var(--lime); font-size: 29px; font-weight: 300; }
.arrow-a { left: 48%; top: 121px; }
.arrow-b { right: 88px; top: 47%; }
.arrow-c { left: 48%; bottom: 125px; }
.arrow-d { left: 92px; top: 47%; }
.board-center { position: absolute; inset: 0; z-index: 2; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.board-center strong { color: var(--lime); font-family: var(--serif); font-size: 38px; font-weight: 500; letter-spacing: .02em; }
.board-center span { color: #aeb6c7; font-size: 10px; letter-spacing: .1em; }
.board-caption { position: absolute; z-index: 2; left: 28px; right: 28px; bottom: 20px; margin: 0; color: #aeb6c7; font-size: 11px; }

.hero-stats { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.hero-stats div { display: flex; align-items: baseline; gap: 12px; padding: 18px 20px; border-right: 1px solid var(--line); }
.hero-stats div:last-child { border-right: 0; }
.hero-stats strong { color: var(--orange); font-family: var(--serif); font-size: 35px; font-weight: 500; }
.hero-stats span { color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: .06em; }

.thesis-band { padding-block: 110px; color: var(--white); background: var(--orange); }
.thesis-grid { display: grid; grid-template-columns: 160px 1fr 260px; gap: 60px; align-items: start; }
.section-index { margin: 0; color: var(--orange); font-size: 10px; font-weight: 850; letter-spacing: .18em; text-transform: uppercase; }
.thesis-grid .section-index { color: var(--ink); }
.thesis-grid blockquote { margin: 0; font-family: var(--serif); font-size: clamp(38px, 4.6vw, 70px); font-weight: 500; line-height: 1.07; letter-spacing: -.035em; }
.thesis-grid blockquote em { color: var(--ink); font-style: normal; }
.thesis-note { padding-top: 8px; border-top: 1px solid rgba(255,255,255,.5); }
.thesis-note p { margin: 0 0 20px; font-size: 13px; }

.content-section { padding-block: 120px; }
.section-header { display: grid; grid-template-columns: 160px minmax(0, 780px); column-gap: 60px; margin-bottom: 58px; }
.section-header .section-index { grid-row: 1 / span 2; padding-top: 11px; }
.section-header h2 { margin: 0; font-family: var(--serif); font-size: clamp(44px, 5vw, 76px); font-weight: 500; line-height: 1.02; letter-spacing: -.045em; }
.section-header > p:last-child { grid-column: 2; max-width: 690px; margin: 22px 0 0; color: var(--muted); font-size: 18px; }

.three-longs { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); }
.three-longs article { min-height: 280px; padding: 26px; border-right: 1px solid var(--line); }
.three-longs article:last-child { border-right: 0; }
.card-number { color: var(--orange); font-family: var(--serif); font-size: 50px; }
.three-longs h3 { margin: 42px 0 12px; font-family: var(--serif); font-size: 28px; }
.three-longs p { color: var(--muted); font-size: 14px; }
.three-longs .accent-card { color: var(--white); background: var(--ink); }
.three-longs .accent-card p { color: #bdc4d1; }
.three-longs .accent-card .card-number { color: var(--lime); }

.math-strip { display: grid; grid-template-columns: 230px minmax(260px, 1fr) 1.3fr; gap: 34px; align-items: center; margin-top: 30px; padding: 30px; color: var(--white); background: var(--teal); }
.math-main { font-family: var(--serif); font-size: 104px; line-height: .8; }
.math-main sup { color: var(--lime); font-size: 40px; }
.math-copy strong { font-family: var(--serif); font-size: 32px; font-weight: 500; }
.math-copy p { margin: 8px 0 0; color: rgba(255,255,255,.72); font-size: 13px; }
.mini-bars { height: 160px; display: flex; align-items: end; gap: 18px; padding: 16px 12px 0; border-left: 1px solid rgba(255,255,255,.28); border-bottom: 1px solid rgba(255,255,255,.28); }
.mini-bars i { position: relative; flex: 1; height: var(--h); background: var(--lime); }
.mini-bars span { position: absolute; bottom: -27px; left: 50%; color: rgba(255,255,255,.78); font-size: 10px; font-style: normal; transform: translateX(-50%); }

.dark-section { color: var(--white); background: var(--ink); }
.dark-section .section-header > p:last-child { color: #adb5c5; }
.agent-equation { display: grid; grid-template-columns: 1fr auto 1fr auto .72fr; gap: 22px; align-items: center; padding: 26px 0 52px; border-bottom: 1px solid rgba(255,255,255,.17); }
.agent-equation > div { display: grid; grid-template-columns: auto 1fr; gap: 2px 16px; align-items: center; }
.agent-equation > div > span { grid-row: 1 / span 2; display: grid; place-items: center; width: 66px; aspect-ratio: 1; color: var(--ink); background: var(--lime); font-family: var(--serif); font-size: 38px; }
.agent-equation b { font-family: var(--serif); font-size: 23px; font-weight: 500; }
.agent-equation small { color: #98a2b5; font-size: 10px; letter-spacing: .06em; }
.agent-equation > i { color: var(--orange); font-family: var(--serif); font-size: 32px; font-style: normal; }
.agent-equation .equation-result > span { color: var(--white); background: var(--orange); }

.rsi-ladder { margin-top: 44px; border-top: 1px solid rgba(255,255,255,.17); }
.rsi-ladder article { display: grid; grid-template-columns: 90px 1fr auto; align-items: center; min-height: 112px; border-bottom: 1px solid rgba(255,255,255,.17); transition: background .2s ease; }
.rsi-ladder article:hover { background: rgba(255,255,255,.035); }
.ladder-level { color: var(--lime); font-family: var(--serif); font-size: 42px; }
.rsi-ladder h3 { margin: 0 0 4px; font-size: 17px; }
.rsi-ladder p { margin: 0; color: #9fa8ba; font-size: 13px; }
.verdict { padding: 7px 10px; border: 1px solid; font-size: 9px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.verdict.no { color: #8d96a8; border-color: #596274; }
.verdict.maybe { color: #ffd097; border-color: #a56d31; }
.verdict.yes { color: var(--lime); border-color: var(--lime); }

.research-object { margin-top: 52px; padding: 34px; color: var(--ink); background: var(--lime); }
.object-flow { display: flex; align-items: center; gap: 18px; }
.object-flow span { display: flex; align-items: center; gap: 9px; font-size: 12px; font-weight: 750; }
.object-flow b { display: grid; place-items: center; width: 35px; aspect-ratio: 1; color: var(--white); background: var(--ink); font-family: var(--serif); font-size: 20px; }
.object-flow i { font-style: normal; }
.research-object p { max-width: 930px; margin: 23px 0 0; font-size: 14px; }
.research-object code { padding: 2px 5px; background: rgba(23,34,56,.09); }

.work-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 28px; border: 1px solid rgba(255,255,255,.17); }
.work-grid article { min-height: 285px; padding: 22px; border-right: 1px solid rgba(255,255,255,.17); }
.work-grid article:last-child { border-right: 0; }
.work-year { margin: 0; color: var(--orange); font-size: 9px; font-weight: 850; letter-spacing: .12em; }
.work-grid h3 { margin: 38px 0 14px; font-family: var(--serif); font-size: 25px; font-weight: 500; line-height: 1.1; }
.work-grid article > p:not(.work-year) { color: #adb5c5; font-size: 12px; }
.work-grid a { display: inline-block; margin-top: 12px; color: var(--lime); font-size: 11px; font-weight: 750; text-underline-offset: 4px; }
.takeaway-box { display: grid; grid-template-columns: 130px 1fr; gap: 20px; align-items: start; margin-top: 28px; padding: 28px; border: 1px solid var(--orange); }
.takeaway-box span { color: var(--orange); font-size: 10px; font-weight: 850; letter-spacing: .16em; text-transform: uppercase; }
.takeaway-box p { max-width: 860px; margin: 0; font-family: var(--serif); font-size: 25px; line-height: 1.35; }

.case-section { padding-block: 96px; background: var(--lime); }
.case-label { display: inline-block; margin-bottom: 22px; padding: 5px 9px; color: var(--white); background: var(--ink); font-size: 9px; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; }
.case-grid { display: grid; grid-template-columns: 1.1fr .9fr; border-top: 2px solid var(--ink); border-bottom: 1px solid var(--ink); }
.case-grid > div { padding: 34px; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.case-grid > div:nth-child(2n) { border-right: 0; }
.case-grid > div:nth-last-child(-n+2) { border-bottom: 0; }
.case-title p { margin: 0 0 20px; color: var(--orange-dark); font-size: 10px; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; }
.case-title h2 { margin: 0; font-family: var(--serif); font-size: clamp(36px, 4vw, 58px); font-weight: 500; line-height: 1.06; }
.case-title strong { display: block; margin-top: 16px; font-size: 14px; }
.case-facts { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.case-facts div { border-bottom: 1px solid rgba(23,34,56,.35); }
.case-facts b { display: block; font-family: var(--serif); font-size: 42px; font-weight: 500; }
.case-facts span { display: block; padding-bottom: 8px; font-size: 9px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.case-pros h3, .case-cons h3 { margin: 0 0 18px; font-family: var(--serif); font-size: 25px; }
.case-pros ul, .case-cons ul { margin: 0; padding-left: 18px; font-size: 13px; }
.case-pros li, .case-cons li { margin-bottom: 10px; }
.case-cons { background: rgba(255,255,255,.25); }
.case-link { display: inline-block; margin-top: 20px; font-size: 11px; font-weight: 750; text-underline-offset: 4px; }

.robot-stack { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr auto 1fr; align-items: stretch; color: var(--white); background: var(--ink); }
.robot-stack > div { min-width: 0; padding: 22px 16px; }
.robot-stack > div span { display: block; margin-bottom: 28px; color: var(--orange); font-size: 9px; font-weight: 800; }
.robot-stack > div b { display: block; font-family: var(--serif); font-size: 19px; font-weight: 500; }
.robot-stack > div small { color: #aeb6c7; font-size: 9px; }
.robot-stack > i { align-self: center; color: var(--lime); font-size: 18px; font-style: normal; }
.robot-stack .return-arrow { color: var(--orange); font-size: 28px; }

.paradigm-track { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 34px; border-top: 2px solid var(--ink); }
.paradigm-track article { position: relative; min-height: 330px; padding: 26px 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.paradigm-track article:first-child { border-left: 1px solid var(--line); }
.paradigm-track article > span { font-family: var(--serif); font-size: 48px; }
.track-era { margin: 28px 0 8px; color: var(--orange); font-size: 9px; font-weight: 850; letter-spacing: .12em; }
.paradigm-track h3 { margin: 0 0 12px; font-family: var(--serif); font-size: 25px; font-weight: 500; }
.paradigm-track article > p:last-child { color: var(--muted); font-size: 12px; }
.paradigm-track .current-track { color: var(--white); background: var(--orange); }
.paradigm-track .current-track .track-era, .paradigm-track .current-track p:last-child { color: var(--white); }
.subsection-title { margin: 74px 0 24px; font-family: var(--serif); font-size: 34px; font-weight: 500; }
.action-table { border-top: 2px solid var(--ink); }
.action-table > div { display: grid; grid-template-columns: 1.1fr 1fr 1.3fr 1.6fr; min-height: 64px; align-items: center; border-bottom: 1px solid var(--line); }
.action-table span, .action-table b { padding: 12px 16px; font-size: 12px; }
.action-table b { font-family: var(--serif); font-size: 17px; font-weight: 500; }
.action-table .table-head { min-height: 42px; color: var(--white); background: var(--ink); }
.action-table .table-head span { font-size: 9px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }

.benchmark-section { background: var(--white); }
.filter-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }
.filter { padding: 7px 13px; color: var(--muted); background: transparent; border: 1px solid var(--line); font-size: 11px; font-weight: 750; cursor: pointer; }
.filter:hover, .filter.active { color: var(--white); background: var(--ink); border-color: var(--ink); }
.benchmark-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 2px solid var(--ink); border-left: 1px solid var(--line); }
.benchmark-grid article { display: flex; flex-direction: column; min-height: 290px; padding: 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: opacity .2s, transform .2s; }
.benchmark-grid article.hidden { display: none; }
.bench-meta { margin: 0; color: var(--orange); font-size: 8px; font-weight: 850; letter-spacing: .12em; }
.benchmark-grid h3 { margin: 32px 0 8px; font-family: var(--serif); font-size: 27px; font-weight: 500; }
.benchmark-grid strong { font-size: 11px; }
.benchmark-grid article > p:not(.bench-meta) { color: var(--muted); font-size: 12px; }
.benchmark-grid a { margin-top: auto; font-size: 10px; font-weight: 750; text-underline-offset: 4px; }

.sota-audit { display: grid; grid-template-columns: .9fr 1.1fr; margin-top: 52px; color: var(--white); background: var(--ink); }
.sota-copy { padding: 44px; }
.sota-copy .section-index { color: var(--lime); }
.sota-copy h3 { margin: 22px 0 10px; color: var(--orange); font-family: var(--serif); font-size: clamp(55px, 7vw, 92px); font-weight: 500; line-height: 1; }
.sota-copy h3 span { color: var(--white); font-size: .55em; }
.sota-copy > p:not(.section-index) { color: #b9c1ce; font-size: 13px; }
.sota-copy a { color: var(--lime); font-size: 10px; font-weight: 750; text-underline-offset: 4px; }
.gap-chart { align-self: center; padding: 44px; }
.gap-chart > div { display: grid; grid-template-columns: 150px 1fr 48px; gap: 12px; align-items: center; margin: 22px 0; }
.gap-chart span { color: #aeb6c7; font-size: 10px; font-weight: 750; }
.gap-chart i { height: 22px; background: linear-gradient(90deg, var(--lime) var(--value), rgba(255,255,255,.12) var(--value)); }
.gap-chart b { font-family: var(--serif); font-size: 20px; font-weight: 500; }
.gap-chart .gap-low i { background: linear-gradient(90deg, var(--orange) var(--value), rgba(255,255,255,.12) var(--value)); }
.gap-chart .gap-low b { color: var(--orange); }
.gap-chart small { color: #687387; font-size: 9px; }
.audit-note { display: grid; grid-template-columns: 170px 1fr auto; gap: 24px; align-items: start; padding: 24px 0; border-bottom: 1px solid var(--line); }
.audit-note strong { color: var(--orange); font-size: 10px; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.audit-note p { max-width: 760px; margin: 0; font-size: 13px; }
.audit-note a { font-size: 10px; font-weight: 750; }

.frontier-section { background: var(--paper-2); }
.frontier-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 2px solid var(--ink); border-left: 1px solid var(--line); }
.frontier-grid article { min-height: 440px; padding: 28px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.frontier-icon { display: grid; place-items: center; width: 74px; aspect-ratio: 1; color: var(--lime); background: var(--ink); font-family: var(--serif); font-size: 17px; line-height: .65; text-align: center; }
.frontier-icon span { color: var(--orange); }
.frontier-kicker { margin: 34px 0 8px; color: var(--orange); font-size: 9px; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.frontier-grid h3 { margin: 0 0 12px; font-family: var(--serif); font-size: 30px; font-weight: 500; }
.frontier-grid article > p:not(.frontier-kicker):not(.frontier-question), .frontier-grid li { color: var(--muted); font-size: 12px; }
.frontier-grid ul { padding-left: 18px; }
.frontier-question { margin-top: 26px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 12px; font-weight: 750; }
.convergence { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 30px; padding: 28px; color: var(--white); background: var(--teal); }
.convergence span { padding: 8px 11px; border: 1px solid rgba(255,255,255,.55); font-size: 10px; font-weight: 750; }
.convergence i { color: var(--lime); font-style: normal; }
.bottlenecks { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 72px; }
.bottlenecks article { padding-top: 16px; border-top: 3px solid var(--orange); }
.bottlenecks span { color: var(--orange); font-size: 9px; font-weight: 850; }
.bottlenecks h3 { margin: 28px 0 8px; font-family: var(--serif); font-size: 31px; font-weight: 500; }
.bottlenecks p { color: var(--muted); font-size: 13px; }
.closing-thesis { margin: 90px 0 0; padding: 50px 0 0; border-top: 1px solid var(--ink); font-family: var(--serif); font-size: clamp(40px, 5.3vw, 78px); font-weight: 500; line-height: 1.1; letter-spacing: -.04em; }
.closing-thesis s { color: #8f96a2; text-decoration-color: var(--orange); text-decoration-thickness: 4px; }
.closing-thesis strong { color: var(--orange); font-weight: 500; }

.talk-section { padding-block: 120px; color: var(--white); background: var(--ink); }
.talk-section .section-header > p:last-child { color: #adb5c5; }
.timeline { margin-bottom: 48px; }
.timeline-scale { display: flex; justify-content: space-between; margin-bottom: 10px; color: #7f899a; font-size: 9px; }
.timeline-bar { display: flex; height: 54px; }
.seg { width: var(--w); display: grid; place-items: center; color: var(--ink); font-size: 9px; font-weight: 850; letter-spacing: .04em; text-align: center; }
.seg.opening, .seg.close { color: var(--white); background: #596476; }
.seg.auto { background: var(--lime); }
.seg.body { color: var(--white); background: var(--orange); }

.slide-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid rgba(255,255,255,.2); }
.slide-list li { display: grid; grid-template-columns: 70px 54px 1fr 54px; gap: 20px; align-items: center; min-height: 90px; border-bottom: 1px solid rgba(255,255,255,.16); }
.slide-list time { color: #7f899a; font-size: 10px; }
.slide-list li > span { color: var(--lime); font-family: var(--serif); font-size: 27px; }
.slide-list h3 { margin: 0 0 2px; font-family: var(--serif); font-size: 20px; font-weight: 500; }
.slide-list p { margin: 0; color: #929cad; font-size: 11px; }
.slide-list li > b { justify-self: end; color: var(--orange); font-size: 10px; }
.copy-button { margin-top: 28px; padding: 11px 16px; color: var(--ink); background: var(--lime); border: 0; font-size: 11px; font-weight: 800; cursor: pointer; }
.copy-button:hover { background: var(--white); }

.sources-section { padding-block: 120px; background: var(--white); }
.source-list { border-top: 2px solid var(--ink); }
.source-list a { display: grid; grid-template-columns: 58px 1fr 220px; gap: 20px; align-items: center; min-height: 72px; border-bottom: 1px solid var(--line); text-decoration: none; transition: padding .2s, background .2s; }
.source-list a:hover { padding-inline: 12px; background: var(--paper); }
.source-list span { color: var(--orange); font-family: var(--serif); font-size: 21px; }
.source-list b { font-family: var(--serif); font-size: 18px; font-weight: 500; }
.source-list small { color: var(--muted); font-size: 10px; text-align: right; }
.extra-reading { margin-top: 30px; border: 1px solid var(--line); }
.extra-reading summary { padding: 16px 20px; font-size: 12px; font-weight: 750; cursor: pointer; }
.extra-reading p { margin: 0; padding: 0 20px 20px; color: var(--muted); font-size: 13px; }

footer { padding-block: 52px; color: #afb7c7; background: #0e1728; }
.footer-grid { display: grid; grid-template-columns: 1.4fr .8fr 1.4fr auto; gap: 42px; align-items: start; }
.footer-grid strong { color: var(--white); font-family: var(--serif); font-size: 20px; font-weight: 500; }
.footer-grid span { color: var(--lime); font-size: 9px; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.footer-grid p { margin: 8px 0 0; font-size: 10px; }
.footer-grid a { color: var(--white); font-size: 10px; font-weight: 750; }

.toast { position: fixed; z-index: 120; right: 24px; bottom: 24px; padding: 10px 15px; color: var(--ink); background: var(--lime); font-size: 11px; font-weight: 800; opacity: 0; transform: translateY(12px); pointer-events: none; transition: opacity .2s, transform .2s; }
.toast.show { opacity: 1; transform: none; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s ease, transform .65s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 1050px) {
  .hero { grid-template-columns: 1fr; }
  .hero-board { min-height: 540px; }
  .thesis-grid { grid-template-columns: 120px 1fr; }
  .thesis-note { grid-column: 2; }
  .section-header { grid-template-columns: 120px 1fr; }
  .math-strip { grid-template-columns: 180px 1fr; }
  .mini-bars { grid-column: 1 / -1; }
  .work-grid, .benchmark-grid { grid-template-columns: repeat(2, 1fr); }
  .work-grid article:nth-child(2) { border-right: 0; }
  .work-grid article { border-bottom: 1px solid rgba(255,255,255,.17); }
  .work-grid article:nth-last-child(-n+2) { border-bottom: 0; }
  .paradigm-track { grid-template-columns: repeat(2, 1fr); }
  .frontier-grid { grid-template-columns: 1fr; }
  .frontier-grid article { min-height: unset; }
}

@media (max-width: 760px) {
  .section-shell { width: min(100% - 32px, var(--max)); }
  .topbar { grid-template-columns: 1fr auto; height: 62px; padding: 0 16px; }
  .topnav { display: none; }
  .brand { font-size: 11px; }
  .hero { min-height: auto; padding-block: 52px 26px; gap: 42px; }
  .hero h1 { font-size: clamp(57px, 18vw, 83px); }
  .dek { font-size: 17px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 16px; }
  .hero-board { min-height: 480px; }
  .stage-goal, .stage-check { left: 18px; }
  .stage-plan, .stage-act { right: 18px; }
  .arrow-d { left: 68px; }
  .arrow-b { right: 68px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stats div:nth-child(2) { border-right: 0; }
  .hero-stats div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }

  .thesis-band, .content-section, .talk-section, .sources-section { padding-block: 78px; }
  .thesis-grid, .section-header { display: block; }
  .thesis-grid .section-index, .section-header .section-index { margin-bottom: 22px; }
  .thesis-grid blockquote { font-size: 40px; }
  .thesis-note { margin-top: 38px; }
  .section-header h2 { font-size: 44px; }
  .section-header > p:last-child { font-size: 15px; }
  .three-longs { grid-template-columns: 1fr; }
  .three-longs article { min-height: 230px; border-right: 0; border-bottom: 1px solid var(--line); }
  .math-strip { grid-template-columns: 1fr; }
  .math-main { font-size: 82px; }
  .mini-bars { grid-column: auto; }
  .agent-equation { grid-template-columns: 1fr; }
  .agent-equation > i { text-align: center; }
  .rsi-ladder article { grid-template-columns: 58px 1fr; gap: 8px; padding-block: 16px; }
  .verdict { grid-column: 2; justify-self: start; }
  .object-flow { align-items: flex-start; flex-direction: column; }
  .object-flow i { transform: rotate(90deg); }
  .work-grid, .benchmark-grid { grid-template-columns: 1fr; }
  .work-grid article { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.17) !important; }
  .work-grid article:last-child { border-bottom: 0 !important; }
  .takeaway-box { grid-template-columns: 1fr; }
  .takeaway-box p { font-size: 21px; }
  .case-grid { grid-template-columns: 1fr; }
  .case-grid > div { border-right: 0 !important; border-bottom: 1px solid var(--ink) !important; }
  .case-grid > div:last-child { border-bottom: 0 !important; }
  .robot-stack { grid-template-columns: 1fr; }
  .robot-stack > i { justify-self: center; transform: rotate(90deg); }
  .paradigm-track { grid-template-columns: 1fr; }
  .action-table { overflow-x: auto; }
  .action-table > div { min-width: 670px; }
  .sota-audit { grid-template-columns: 1fr; }
  .sota-copy, .gap-chart { padding: 28px; }
  .gap-chart > div { grid-template-columns: 115px 1fr 40px; }
  .audit-note { grid-template-columns: 1fr; }
  .bottlenecks { grid-template-columns: 1fr; }
  .closing-thesis { font-size: 42px; }
  .timeline-bar { height: 72px; }
  .seg { writing-mode: vertical-rl; font-size: 8px; }
  .slide-list li { grid-template-columns: 50px 38px 1fr; gap: 10px; padding-block: 12px; }
  .slide-list li > b { grid-column: 3; justify-self: start; }
  .source-list a { grid-template-columns: 42px 1fr; padding-block: 13px; }
  .source-list small { grid-column: 2; text-align: left; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

@media print {
  :root { --paper: #fff; --paper-2: #f4f4f4; }
  body { font-size: 11pt; }
  .topbar, .reading-progress, .hero-actions, .filter-row, .copy-button, .toast { display: none !important; }
  .hero { min-height: auto; page-break-after: always; }
  .hero-board { min-height: 440px; print-color-adjust: exact; -webkit-print-color-adjust: exact; }
  .content-section, .talk-section, .sources-section, .thesis-band, .case-section { padding-block: 48px; }
  .dark-section, .talk-section, .thesis-band, .case-section, .benchmark-section, .frontier-section { print-color-adjust: exact; -webkit-print-color-adjust: exact; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .benchmark-grid article.hidden { display: flex; }
  a { text-decoration: none; }
}