:root {
  color-scheme: light;
  --ink: #0b0f0e;
  --ink-soft: #151b19;
  --paper: #f1eee5;
  --paper-bright: #faf8f1;
  --line: #c9c4b7;
  --muted: #66675f;
  --acid: #d9ff63;
  --rust: #b74d35;
  --viewer: 54px;
  --progress: 2px;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--viewer) + 28px); }
body { margin: 0; overflow-x: hidden; background: var(--paper); color: var(--ink); }
button, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
button:focus-visible, a:focus-visible, textarea:focus-visible { outline: 3px solid var(--acid); outline-offset: 4px; }
.skip-link { position: fixed; z-index: 1000; top: 10px; left: 10px; padding: 10px 14px; background: white; color: var(--ink); font-size: 13px; font-weight: 800; transform: translateY(-150%); }
.skip-link:focus { transform: none; }

.delivery-bar { position: fixed; z-index: 100; inset: 0 0 auto; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; height: var(--viewer); padding: 0 18px; border-bottom: 1px solid rgba(255,255,255,.12); background: rgba(11,15,14,.94); color: white; backdrop-filter: blur(14px); }
.delivery-brand { display: inline-flex; width: max-content; align-items: center; gap: 9px; text-decoration: none; font-size: 12px; font-weight: 760; letter-spacing: -.01em; }
.delivery-brand svg { width: 23px; height: 23px; }
.delivery-brand svg rect { fill: white; }
.delivery-brand svg path { fill: none; stroke: var(--ink); stroke-linecap: square; stroke-width: 2.5; }
.delivery-meta { display: flex; align-items: center; gap: 8px; min-width: 0; color: rgba(255,255,255,.56); font-size: 11px; }
.delivery-meta strong { color: white; font-weight: 650; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--acid); box-shadow: 0 0 0 4px rgba(217,255,99,.12); }
.delivery-actions { display: flex; justify-content: flex-end; gap: 8px; }
.delivery-actions button { min-height: 34px; border: 1px solid rgba(255,255,255,.16); color: white; cursor: pointer; }
.text-action { padding: 0 13px; background: transparent; font-size: 11px; font-weight: 720; }
.fullscreen-action { display: inline-flex; align-items: center; gap: 8px; padding: 0 13px; background: white; color: var(--ink) !important; font-size: 11px; font-weight: 780; }
.fullscreen-action svg { width: 14px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.delivery-actions button:hover { border-color: var(--acid); }
.reading-progress { position: fixed; z-index: 110; top: var(--viewer); right: 0; left: 0; height: var(--progress); background: rgba(255,255,255,.12); }
.reading-progress span { display: block; width: 0; height: 100%; background: var(--acid); transition: width .12s linear; }

main { padding-top: calc(var(--viewer) + var(--progress)); }
.chapter { min-height: calc(100svh - var(--viewer) - var(--progress)); }
.cover { position: relative; isolation: isolate; display: grid; grid-template-columns: minmax(0, 1.13fr) minmax(360px, .87fr); grid-template-rows: auto 1fr auto; overflow: hidden; min-height: calc(100svh - var(--viewer) - var(--progress)); padding: 38px clamp(28px,5vw,82px) 34px; background: var(--ink); color: white; }
.cover-grid { position: absolute; z-index: -2; inset: 0; opacity: .16; background-image: linear-gradient(rgba(255,255,255,.14) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.14) 1px,transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(90deg,black,transparent 72%); }
.cover-orbit { position: absolute; z-index: -1; top: 50%; right: clamp(-190px,-9vw,-70px); width: min(58vw,760px); aspect-ratio: 1; transform: translateY(-50%); }
.orbit { position: absolute; inset: 0; margin: auto; border: 1px solid rgba(255,255,255,.12); border-radius: 50%; }
.orbit-one { width: 100%; height: 100%; }
.orbit-two { width: 68%; height: 68%; }
.orbit-three { width: 36%; height: 36%; border-color: rgba(217,255,99,.35); }
.orbit-core { position: absolute; inset: 0; width: 18px; height: 18px; margin: auto; border-radius: 50%; background: var(--acid); box-shadow: 0 0 0 20px rgba(217,255,99,.08), 0 0 70px rgba(217,255,99,.45); }
.cover-top { grid-column: 1/-1; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid rgba(255,255,255,.16); padding-bottom: 22px; }
.northstar-brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-size: 13px; font-weight: 780; letter-spacing: -.01em; }
.northstar-brand svg { width: 22px; fill: var(--acid); }
.cover-top p { margin: 0; color: rgba(255,255,255,.52); font: 620 10px/1.2 ui-monospace,SFMono-Regular,Consolas,monospace; letter-spacing: .08em; text-transform: uppercase; }
.cover-copy { align-self: center; max-width: 760px; padding: 48px 0; }
.kicker { margin: 0; color: #4d5b51; font-size: 10px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.kicker.light { color: var(--acid); }
.cover h1 { margin: 22px 0 24px; font-family: Georgia, "Times New Roman", serif; font-size: clamp(68px,8.1vw,132px); font-weight: 400; letter-spacing: -.068em; line-height: .78; }
.dek { max-width: 585px; margin: 0; color: rgba(255,255,255,.67); font-family: Georgia, "Times New Roman", serif; font-size: clamp(18px,1.7vw,26px); line-height: 1.45; }
.cover-signal { align-self: end; width: min(100%,580px); margin: 0 0 82px auto; }
.signal-value { display: flex; align-items: baseline; justify-content: flex-end; gap: 14px; }
.signal-value span, .signal-value small { color: rgba(255,255,255,.48); font: 700 10px/1 ui-monospace,SFMono-Regular,Consolas,monospace; letter-spacing: .1em; text-transform: uppercase; }
.signal-value strong { font-size: clamp(42px,5vw,76px); font-weight: 550; letter-spacing: -.055em; }
.signal-value small { color: var(--acid); }
.cover-signal svg { display: block; width: 100%; overflow: visible; }
.signal-area { fill: url(#signal-area); }
.signal-line { fill: none; stroke: var(--acid); stroke-width: 3; stroke-linecap: round; }
.cover-signal circle { fill: var(--acid); }
.signal-axis { display: flex; justify-content: space-between; border-top: 1px solid rgba(255,255,255,.17); padding-top: 8px; color: rgba(255,255,255,.4); font: 700 9px ui-monospace,SFMono-Regular,Consolas,monospace; }
.cover-foot { grid-column: 1/-1; display: flex; gap: 38px; border-top: 1px solid rgba(255,255,255,.16); padding-top: 18px; }
.cover-foot p { margin: 0; color: rgba(255,255,255,.68); font-size: 11px; }
.cover-foot p:first-child { color: white; }
.scroll-cue { position: absolute; right: 34px; bottom: 29px; display: flex; align-items: center; gap: 10px; color: rgba(255,255,255,.58); font-size: 10px; text-decoration: none; text-transform: uppercase; letter-spacing: .12em; writing-mode: vertical-rl; }
.scroll-cue i { width: 1px; height: 34px; background: var(--acid); }

.enter { opacity: 0; transform: translateY(18px); }
.is-ready .enter { opacity: 1; transform: none; transition: opacity .8s cubic-bezier(.22,1,.36,1), transform .8s cubic-bezier(.22,1,.36,1); }
.is-ready .enter-two { transition-delay: .12s; }
.is-ready .enter-three { transition-delay: .22s; }
.is-ready .enter-four { transition-delay: .32s; }
.is-ready .orbit-two { animation: orbit-drift 18s linear infinite; }
.is-ready .orbit-three { animation: orbit-pulse 4.4s ease-in-out infinite; }
@keyframes orbit-drift { to { transform: rotate(360deg) scale(.96); } }
@keyframes orbit-pulse { 50% { transform: scale(1.08); opacity: .6; } }

.chapter-nav { position: fixed; z-index: 60; top: 50%; right: 18px; display: flex; flex-direction: column; gap: 6px; transform: translateY(-50%); }
.chapter-nav a { display: grid; width: 30px; height: 30px; place-items: center; border: 1px solid rgba(127,127,116,.38); background: rgba(250,248,241,.86); color: #6e7069; font: 700 9px ui-monospace,SFMono-Regular,Consolas,monospace; text-decoration: none; backdrop-filter: blur(8px); transition: background .18s, color .18s, transform .18s; }
.chapter-nav a:hover, .chapter-nav a.is-active { transform: translateX(-4px); background: var(--acid); color: var(--ink); }

.paper { min-height: 100svh; padding: clamp(70px,8vw,128px) clamp(28px,8vw,132px); background: var(--paper); }
.section-heading { display: grid; grid-template-columns: minmax(140px,.42fr) minmax(340px,1.08fr) minmax(260px,.5fr); gap: clamp(30px,5vw,90px); align-items: end; max-width: 1420px; margin: 0 auto; }
.section-heading > div { align-self: stretch; display: flex; flex-direction: column; justify-content: space-between; padding: 7px 0; }
.period { color: var(--muted); font-size: 11px; }
.section-heading h2, .scenario-heading h2, .decision-copy h2, .handoff h2 { margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: clamp(44px,5.4vw,84px); font-weight: 400; letter-spacing: -.055em; line-height: .96; }
.section-heading > p, .scenario-heading > p, .decision-copy > p { margin: 0; color: var(--muted); font: 17px/1.65 Georgia,"Times New Roman",serif; }
.metric-ledger { display: grid; grid-template-columns: repeat(4,1fr); max-width: 1420px; margin: clamp(70px,9vw,132px) auto 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--line); }
.metric-ledger article { min-width: 0; padding: 22px 26px 28px 0; border-right: 1px solid var(--line); }
.metric-ledger article:not(:first-child) { padding-left: 26px; }
.metric-ledger article:last-child { border-right: 0; }
.metric-ledger span { display: block; min-height: 36px; color: var(--muted); font-size: 11px; }
.metric-ledger strong { display: block; margin: 10px 0 18px; font-size: clamp(38px,4vw,62px); font-weight: 540; letter-spacing: -.05em; }
.metric-ledger small { color: var(--muted); font-size: 10px; }
.metric-ledger b { color: #2a6b4f; font-weight: 780; }
.signal-analysis { display: grid; grid-template-columns: 1.36fr .64fr; gap: clamp(45px,7vw,110px); max-width: 1420px; margin: clamp(65px,8vw,118px) auto 0; }
.retention-chart { margin: 0; }
.retention-chart figcaption { display: flex; justify-content: space-between; gap: 30px; border-bottom: 1px solid var(--line); padding-bottom: 14px; color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: .1em; }
.retention-chart figcaption strong { color: var(--ink); font-weight: 700; }
.bridge { display: grid; grid-template-columns: repeat(5,1fr); align-items: end; height: 340px; padding-top: 42px; border-bottom: 1px solid var(--ink); }
.bridge-item { position: relative; display: grid; align-content: end; justify-items: center; height: 100%; }
.bridge-item > span { width: 56%; height: var(--height); background: #9fa69d; transform-origin: bottom; }
.bridge-item.total > span { background: var(--ink); }
.bridge-item.current > span { background: var(--acid); border: 1px solid var(--ink); }
.bridge-item.positive > span { background: #40785e; }
.bridge-item.negative > span { background: var(--rust); }
.bridge-item b { position: absolute; top: calc(100% - var(--height) - 26px); font-size: 12px; }
.bridge-item small { position: absolute; top: calc(100% + 12px); color: var(--muted); font-size: 9px; text-transform: uppercase; }
.board-reading { border-top: 5px solid var(--ink); padding-top: 22px; }
.board-reading blockquote { margin: 28px 0 48px; font: 30px/1.25 Georgia,"Times New Roman",serif; letter-spacing: -.025em; }
.reading-facts { border-top: 1px solid var(--line); }
.reading-facts p { display: grid; grid-template-columns: 92px 1fr; gap: 16px; margin: 0; padding: 18px 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 12px; line-height: 1.55; }
.reading-facts span { color: var(--ink); font-size: 20px; font-weight: 750; letter-spacing: -.03em; }

.scenario { min-height: 100svh; padding: clamp(70px,8vw,128px) clamp(28px,8vw,132px); background: var(--ink); color: white; }
.scenario-heading { display: grid; grid-template-columns: .55fr 1.1fr .55fr; gap: clamp(30px,5vw,90px); max-width: 1420px; margin: 0 auto; }
.scenario-heading h2 em, .decision-copy h2 em { color: var(--acid); font-weight: 400; }
.scenario-heading > p { color: rgba(255,255,255,.54); }
.scenario-workbench { display: grid; grid-template-columns: .52fr 1.48fr; gap: clamp(32px,6vw,96px); max-width: 1420px; margin: clamp(68px,8vw,118px) auto 0; border-top: 1px solid rgba(255,255,255,.22); border-bottom: 1px solid rgba(255,255,255,.22); }
.scenario-controls { display: flex; flex-direction: column; border-right: 1px solid rgba(255,255,255,.18); }
.scenario-controls button { display: grid; grid-template-columns: 34px 1fr; gap: 3px 10px; padding: 26px 30px 26px 0; border: 0; border-bottom: 1px solid rgba(255,255,255,.16); background: transparent; color: rgba(255,255,255,.52); text-align: left; cursor: pointer; transition: color .2s,padding-left .2s,background .2s; }
.scenario-controls button:last-child { border-bottom: 0; }
.scenario-controls button:hover { color: white; }
.scenario-controls button[aria-selected="true"] { padding-left: 18px; background: var(--acid); color: var(--ink); }
.scenario-controls button > span { grid-row: 1/3; font: 700 9px ui-monospace,SFMono-Regular,Consolas,monospace; }
.scenario-controls strong { font-size: 18px; }
.scenario-controls small { font-size: 10px; }
.scenario-panel { display: grid; grid-template-columns: .9fr 1.1fr; gap: 36px 64px; padding: 48px 0 50px; }
.scenario-primary p, .scenario-outcomes span { margin: 0; color: rgba(255,255,255,.48); font-size: 10px; text-transform: uppercase; letter-spacing: .12em; }
.scenario-primary strong { display: block; margin: 12px 0 8px; color: var(--acid); font: 400 clamp(62px,7vw,108px)/.9 Georgia,"Times New Roman",serif; letter-spacing: -.07em; }
.scenario-primary small { color: rgba(255,255,255,.58); font-size: 11px; }
.scenario-outcomes { display: grid; grid-template-columns: repeat(3,1fr); align-content: center; }
.scenario-outcomes div { padding: 16px 20px; border-left: 1px solid rgba(255,255,255,.18); }
.scenario-outcomes strong { display: block; margin-top: 14px; font-size: clamp(22px,2vw,34px); font-weight: 560; letter-spacing: -.04em; }
.runway-track { position: relative; grid-column: 1/-1; height: 5px; background: rgba(255,255,255,.14); }
.runway-track span { display: block; width: var(--runway-width,72%); height: 100%; background: var(--acid); transition: width .5s cubic-bezier(.22,1,.36,1); }
.runway-track i { position: absolute; top: 13px; left: 43%; color: rgba(255,255,255,.72); font: normal 10px ui-monospace,SFMono-Regular,Consolas,monospace; text-transform: uppercase; }
.scenario-recommendation { grid-column: 1/-1; display: grid; grid-template-columns: 140px 1fr; gap: 30px; margin: 10px 0 0; border-top: 1px solid rgba(255,255,255,.18); padding-top: 24px; }
.scenario-recommendation span { color: var(--acid); font-size: 10px; text-transform: uppercase; letter-spacing: .12em; }
.scenario-recommendation strong { max-width: 650px; font: 400 21px/1.45 Georgia,"Times New Roman",serif; }
.scenario-footnote { display: grid; grid-template-columns: 180px 1fr; gap: 30px; max-width: 1420px; margin: 26px auto 0; color: rgba(255,255,255,.68); font-size: 12px; line-height: 1.6; }
.scenario-footnote span { text-transform: uppercase; letter-spacing: .12em; }
.scenario-footnote p { max-width: 680px; margin: 0; }

.risks { background: var(--paper-bright); }
.risk-register { max-width: 1420px; margin: clamp(68px,8vw,118px) auto 0; border-top: 1px solid var(--ink); }
.risk-register article { display: grid; grid-template-columns: 56px 1.1fr .9fr 125px; gap: 30px; align-items: start; padding: 32px 0; border-bottom: 1px solid var(--line); }
.risk-rank { font: 700 10px ui-monospace,SFMono-Regular,Consolas,monospace; }
.risk-level { margin: 0 0 12px; color: var(--muted); font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .12em; }
.risk-level.high { color: var(--rust); }
.risk-register h3 { max-width: 510px; margin: 0; font: 400 clamp(22px,2vw,31px)/1.12 Georgia,"Times New Roman",serif; }
.risk-register article > p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.65; }
.risk-register article > strong { color: var(--muted); font-size: 9px; text-align: right; text-transform: uppercase; letter-spacing: .08em; }

.decisions { min-height: 100svh; padding: clamp(70px,8vw,128px) clamp(28px,8vw,132px); background: #202723; color: white; }
.decision-copy { display: grid; grid-template-columns: .45fr 1.15fr .6fr; gap: clamp(30px,5vw,90px); max-width: 1420px; margin: 0 auto; }
.decision-copy > p { color: rgba(255,255,255,.54); }
.decision-list { max-width: 1420px; margin: clamp(68px,8vw,118px) auto 0; padding: 0; border-top: 1px solid rgba(255,255,255,.28); list-style: none; }
.decision-list li { display: grid; grid-template-columns: 60px 1fr 150px; gap: 34px; align-items: center; padding: 28px 0; border-bottom: 1px solid rgba(255,255,255,.18); }
.decision-list li > span { color: rgba(255,255,255,.43); font: 700 10px ui-monospace,SFMono-Regular,Consolas,monospace; }
.decision-list strong { display: block; margin-bottom: 8px; color: var(--acid); font-size: 9px; text-transform: uppercase; letter-spacing: .14em; }
.decision-list h3 { max-width: 790px; margin: 0; font: 400 clamp(20px,2vw,29px)/1.25 Georgia,"Times New Roman",serif; }
.decision-list small { color: rgba(255,255,255,.7); font-size: 11px; text-align: right; }
.final-lockup { display: grid; grid-template-columns: 1fr 1fr auto; gap: 40px; align-items: end; max-width: 1420px; margin: 86px auto 0; }
.final-lockup div { display: flex; align-items: baseline; gap: 20px; }
.final-lockup div span { color: rgba(255,255,255,.7); font-size: 11px; text-transform: uppercase; letter-spacing: .12em; }
.final-lockup div strong { color: var(--acid); font: 400 52px Georgia,"Times New Roman",serif; }
.final-lockup p { margin: 0; color: rgba(255,255,255,.68); font-size: 12px; line-height: 1.6; }
.final-lockup a { color: white; font-size: 11px; text-decoration-color: var(--acid); text-underline-offset: 5px; }

.handoff { display: grid; grid-template-columns: 1.05fr .8fr; gap: 60px 100px; padding: clamp(70px,8vw,120px) clamp(28px,8vw,132px); background: var(--acid); color: var(--ink); }
.handoff > div:first-child { align-self: end; }
.handoff .kicker { color: var(--ink); }
.handoff h2 { margin-top: 16px; font-size: clamp(40px,5vw,72px); }
.handoff > p { align-self: end; max-width: 630px; margin: 0; font: 18px/1.65 Georgia,"Times New Roman",serif; }
.handoff-actions { grid-column: 1/-1; display: flex; flex-wrap: wrap; gap: 10px; padding-top: 28px; border-top: 1px solid rgba(11,15,14,.35); }
.handoff-actions button, .handoff-actions a { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; gap: 16px; padding: 0 20px; border: 1px solid var(--ink); background: transparent; color: var(--ink); cursor: pointer; font-size: 11px; font-weight: 800; text-decoration: none; }
.handoff-actions button, .handoff-actions a:last-child { background: var(--ink); color: white; }
.handoff-actions button:hover, .handoff-actions a:hover { transform: translateY(-2px); }

.prompt-dialog { width: min(760px,calc(100% - 30px)); max-height: min(90svh,800px); padding: 0; border: 0; background: var(--paper-bright); color: var(--ink); box-shadow: 0 34px 120px rgba(0,0,0,.42); }
.prompt-dialog::backdrop { background: rgba(5,8,7,.72); backdrop-filter: blur(5px); }
.dialog-frame { margin: 0; }
.dialog-head { display: flex; align-items: center; justify-content: space-between; height: 54px; padding: 0 18px; background: var(--ink); color: white; font-size: 11px; }
.dialog-head button { display: grid; width: 34px; height: 34px; place-items: center; border: 1px solid rgba(255,255,255,.2); background: transparent; color: white; cursor: pointer; font-size: 24px; }
.dialog-copy { padding: clamp(28px,5vw,58px); }
.dialog-copy h2 { max-width: 590px; margin: 16px 0 18px; font: 400 clamp(31px,5vw,52px)/1 Georgia,"Times New Roman",serif; letter-spacing: -.045em; }
.dialog-copy > p:not(.kicker) { color: var(--muted); font-size: 12px; line-height: 1.6; }
.dialog-copy textarea { width: 100%; height: 220px; margin-top: 18px; resize: vertical; border: 1px solid var(--line); border-radius: 0; padding: 16px; background: white; color: #333832; font: 11px/1.55 ui-monospace,SFMono-Regular,Consolas,monospace; }
.dialog-actions { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 14px; }
.dialog-actions button, .dialog-actions a { display: inline-flex; min-height: 44px; align-items: center; padding: 0 17px; border: 1px solid var(--ink); background: var(--ink); color: white; cursor: pointer; font-size: 10px; font-weight: 800; text-decoration: none; }
.dialog-actions a { background: transparent; color: var(--ink); }
.toast { position: fixed; z-index: 200; right: 18px; bottom: 18px; margin: 0; padding: 12px 16px; background: white; color: var(--ink); box-shadow: 0 14px 50px rgba(0,0,0,.24); font-size: 11px; font-weight: 750; opacity: 0; transform: translateY(14px); pointer-events: none; transition: opacity .2s, transform .2s; }
.toast.is-visible { opacity: 1; transform: none; }

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

.reveal { opacity: 0; transform: translateY(32px); transition: opacity .75s cubic-bezier(.22,1,.36,1),transform .75s cubic-bezier(.22,1,.36,1); }
.reveal.is-visible { opacity: 1; transform: none; }

.presentation-mode .delivery-bar, .presentation-mode .reading-progress, .presentation-mode .chapter-nav { display: none; }
.presentation-mode main { padding-top: 0; }
.presentation-mode .chapter, .presentation-mode .cover { min-height: 100svh; }

@media (max-width: 980px) {
  .delivery-bar { grid-template-columns: 1fr auto; }
  .delivery-meta { display: none; }
  .cover { grid-template-columns: 1fr; grid-template-rows: auto 1fr auto auto; }
  .cover-orbit { right: -270px; width: 700px; opacity: .7; }
  .cover-copy { padding-bottom: 10px; }
  .cover-signal { width: min(72%,580px); margin: 0 0 26px; }
  .scroll-cue, .chapter-nav { display: none; }
  .section-heading, .scenario-heading, .decision-copy { grid-template-columns: .55fr 1.45fr; }
  .section-heading > p, .scenario-heading > p, .decision-copy > p { grid-column: 2; }
  .metric-ledger { grid-template-columns: 1fr 1fr; }
  .metric-ledger article:nth-child(2) { border-right: 0; }
  .metric-ledger article:nth-child(n+3) { border-top: 1px solid var(--line); }
  .signal-analysis { grid-template-columns: 1fr; }
  .scenario-workbench { grid-template-columns: 1fr; gap: 0; }
  .scenario-controls { display: grid; grid-template-columns: repeat(3,1fr); border-right: 0; border-bottom: 1px solid rgba(255,255,255,.18); }
  .scenario-controls button { padding: 18px; border-right: 1px solid rgba(255,255,255,.16); border-bottom: 0; }
  .scenario-controls button[aria-selected="true"] { padding-left: 18px; }
  .risk-register article { grid-template-columns: 42px 1fr 130px; }
  .risk-register article > p { grid-column: 2; }
  .risk-register article > strong { grid-column: 3; grid-row: 1; }
  .handoff { grid-template-columns: 1fr; }
  .handoff > p, .handoff-actions { grid-column: 1; }
}

@media (max-width: 660px) {
  :root { --viewer: 50px; }
  .delivery-bar { padding: 0 10px; }
  .delivery-brand span, .text-action { display: none; }
  .fullscreen-action { min-width: 44px; min-height: 44px; justify-content: center; padding: 0 10px; }
  .fullscreen-action span { display: none; }
  .cover { min-height: calc(100svh - var(--viewer)); padding: 23px 20px 24px; }
  .cover-top p { text-align: right; }
  .cover h1 { margin-top: 16px; font-size: clamp(54px,14.5vw,76px); line-height: .84; }
  .dek { max-width: 90%; font-size: 16px; }
  .cover-orbit { right: -320px; width: 600px; }
  .cover-signal { width: 74%; margin-bottom: 16px; }
  .signal-value { justify-content: flex-start; flex-wrap: wrap; gap: 7px 12px; }
  .signal-value strong { width: 100%; font-size: 42px; }
  .cover-foot { display: grid; grid-template-columns: 1fr 1fr; gap: 7px 14px; }
  .cover-foot p:last-child { grid-column: 1/-1; }
  .paper, .scenario, .decisions { padding: 68px 20px; }
  .section-heading, .scenario-heading, .decision-copy { display: block; }
  .section-heading h2, .scenario-heading h2, .decision-copy h2 { margin-top: 28px; font-size: 48px; }
  .section-heading > p, .scenario-heading > p, .decision-copy > p { margin-top: 28px; }
  .period { display: none; }
  .metric-ledger { margin-top: 56px; }
  .metric-ledger article, .metric-ledger article:not(:first-child) { padding: 18px 14px 20px 0; }
  .metric-ledger article:nth-child(even) { padding-left: 14px; }
  .metric-ledger strong { font-size: 34px; }
  .bridge { height: 250px; }
  .retention-chart figcaption { display: grid; gap: 7px; }
  .board-reading blockquote { font-size: 26px; }
  .scenario-workbench { margin-top: 54px; }
  .scenario-controls { display: flex; overflow-x: auto; }
  .scenario-controls button { min-width: 142px; flex: 1; }
  .scenario-panel { display: block; padding: 38px 0; }
  .scenario-primary strong { font-size: 72px; }
  .scenario-outcomes { margin: 38px 0; }
  .scenario-outcomes div { padding: 10px 12px; }
  .scenario-outcomes strong { font-size: 22px; }
  .runway-track { margin-bottom: 44px; }
  .scenario-recommendation { display: block; }
  .scenario-recommendation strong { display: block; margin-top: 14px; }
  .scenario-footnote { grid-template-columns: 1fr; }
  .risk-register article { grid-template-columns: 32px 1fr; gap: 16px; }
  .risk-register article > p, .risk-register article > strong { grid-column: 2; grid-row: auto; text-align: left; }
  .decision-list li { grid-template-columns: 32px 1fr; gap: 16px; }
  .decision-list small { grid-column: 2; text-align: left; }
  .final-lockup { display: block; margin-top: 58px; }
  .final-lockup p, .final-lockup a { display: block; margin-top: 24px; }
  .handoff { gap: 30px; padding: 66px 20px; }
  .handoff-actions { display: grid; }
  .handoff-actions button, .handoff-actions a { width: 100%; }
  .dialog-copy textarea { height: 250px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .enter, .reveal { opacity: 1; transform: none; }
}

@media print {
  .delivery-bar, .reading-progress, .chapter-nav, .scroll-cue, .handoff, .prompt-dialog, .toast { display: none !important; }
  main { padding-top: 0; }
  .chapter, .cover, .paper, .scenario, .decisions { min-height: auto; break-after: page; print-color-adjust: exact; }
  .reveal, .enter { opacity: 1; transform: none; }
}