:root {
  color-scheme: light;
  --paper: #dce5df;
  --surface: #f5f7f2;
  --ink: #1b3038;
  --muted: #60777b;
  --line: #b9c9c1;
  --steel: #314e56;
  --cobalt: #2c7c9c;
  --ember: #e96537;
  --signal: #4a8e7f;
  --amber: #d6a34d;
  --focus: #204df5;
  font-family: "Segoe UI", "Trebuchet MS", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { min-width: 320px; margin: 0; color: var(--ink); background: var(--paper); }
a { color: inherit; }
a:focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; }
.site-shell { width: min(1320px, calc(100% - 64px)); margin: 0 auto; }
.site-header { display: flex; min-height: 84px; align-items: center; justify-content: space-between; gap: 22px; border-bottom: 1px solid rgba(49, 78, 86, 0.27); }
.site-brand { display: inline-flex; min-width: max-content; align-items: center; gap: 11px; color: inherit; text-decoration: none; }
.brand-mark { display: grid; width: 39px; height: 39px; place-items: center; color: #fbfcf8; background: var(--steel); border-radius: 11px 4px 11px 4px; font-family: Bahnschrift, "Arial Narrow", sans-serif; font-size: 15px; font-weight: 800; letter-spacing: -1px; transform: rotate(-4deg); }
.site-brand > span:last-child { display: grid; gap: 3px; }
.site-brand strong { font-family: Bahnschrift, "Arial Narrow", sans-serif; font-size: 16px; }
.site-brand small { color: var(--muted); font-size: 10px; }
.site-header nav { display: flex; align-items: center; justify-content: center; gap: clamp(14px, 2.1vw, 28px); }
.site-header nav a { color: #435e64; font-size: 12px; font-weight: 700; text-decoration: none; text-underline-offset: 4px; }
.site-header nav a:hover, .site-footer nav a:hover { text-decoration: underline; }
.header-cta { display: inline-flex; min-height: 40px; min-width: max-content; align-items: center; justify-content: center; padding: 9px 13px; color: #f5f7f2; background: var(--steel); font-size: 12px; font-weight: 750; text-decoration: none; }
.header-cta:hover { background: #203d45; }

.presentation-hero { display: grid; grid-template-columns: minmax(0, 0.94fr) minmax(420px, 1.06fr); gap: clamp(35px, 6vw, 85px); align-items: center; padding: clamp(54px, 8vw, 100px) 0 72px; }
.hero-copy { max-width: 620px; }
.hero-kicker, .section-kicker { margin: 0 0 15px; color: var(--signal); font-size: 11px; font-weight: 800; }
.hero-kicker { display: flex; align-items: center; gap: 8px; }
.hero-kicker span { width: 7px; height: 7px; background: var(--ember); border-radius: 50%; }
.hero-copy h1 { margin: 0; font-family: Bahnschrift, "Arial Narrow", "Segoe UI", sans-serif; font-size: clamp(48px, 6vw, 78px); font-weight: 750; line-height: 0.98; letter-spacing: -0.058em; }
.hero-copy h1 em { color: #b84c2d; font-style: normal; }
.hero-description { max-width: 530px; margin: 22px 0 0; color: #435e64; font-size: 16px; line-height: 1.65; }
.hero-actions, .closing-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; margin-top: 27px; }
.button-primary { display: inline-flex; min-height: 45px; align-items: center; justify-content: center; padding: 10px 16px; color: white; background: var(--steel); font-size: 13px; font-weight: 750; text-decoration: none; }
.button-primary:hover { background: #203d45; }
.button-quiet { color: var(--steel); font-size: 13px; font-weight: 750; text-underline-offset: 4px; }
.hero-facts { display: flex; gap: clamp(22px, 4vw, 48px); margin-top: 43px; padding-top: 18px; border-top: 1px solid #a8bbb2; }
.hero-facts div { display: grid; gap: 3px; }
.hero-facts strong { font-family: Bahnschrift, "Arial Narrow", sans-serif; font-size: 23px; letter-spacing: -0.04em; }
.hero-facts span { color: #60777b; font-size: 10px; }

.arena-visual { min-width: 0; padding: 17px 19px 13px; color: #e7f0eb; background: var(--steel); box-shadow: 12px 12px 0 rgba(49, 78, 86, 0.12); }
.visual-topline, .visual-bottomline { display: flex; align-items: center; justify-content: space-between; gap: 12px; color: #b7cbc3; font-family: Consolas, "Courier New", monospace; font-size: 9px; letter-spacing: 0.01em; }
.visual-topline { padding-bottom: 12px; border-bottom: 1px solid rgba(220, 229, 223, 0.2); }
.visual-topline span:last-child { display: inline-flex; align-items: center; gap: 6px; }
.visual-topline i { width: 6px; height: 6px; background: #8fc1a9; border-radius: 50%; }
.visual-scoreline { display: flex; align-items: center; justify-content: space-between; padding: 11px 4px 2px; }
.visual-scoreline span { color: #a7c0b8; font-size: 9px; font-weight: 800; letter-spacing: 0.13em; }
.visual-scoreline span:first-child { color: #77bdd1; }
.visual-scoreline span:last-child { color: #f28a65; }
.visual-scoreline strong { color: #f5f7f2; font-family: Bahnschrift, "Arial Narrow", sans-serif; font-size: 22px; font-variant-numeric: tabular-nums; }
.visual-scoreline strong small { color: #e9b765; font-size: 13px; }
.arena-map { display: block; width: 100%; height: auto; }
.visual-bottomline { justify-content: flex-start; gap: clamp(14px, 3vw, 34px); padding-top: 12px; border-top: 1px solid rgba(220, 229, 223, 0.2); }
.visual-bottomline span::before { display: inline-block; width: 5px; height: 5px; margin-right: 6px; background: #8fc1a9; border-radius: 50%; content: ""; vertical-align: 1px; }

.project-note { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 28px; align-items: center; padding: 24px 0; border-top: 1px solid #9eb2aa; border-bottom: 1px solid #9eb2aa; }
.project-note p { max-width: 830px; margin: 0; color: #435e64; font-size: 14px; line-height: 1.6; }
.project-note strong { color: var(--ink); }
.project-note a, .section-link { color: var(--steel); font-size: 12px; font-weight: 750; text-underline-offset: 4px; }
.project-note a span, .section-link span, .evidence-band > a span { padding-left: 4px; color: var(--ember); }

.disciplines { display: grid; grid-template-columns: minmax(250px, 0.7fr) minmax(0, 1.3fr); gap: clamp(36px, 7vw, 100px); padding: 86px 0 76px; }
.section-intro { max-width: 390px; }
.section-intro h2, .protocol-copy h2, .evidence-band h2, .closing-cta h2 { margin: 0; font-family: Bahnschrift, "Arial Narrow", "Segoe UI", sans-serif; font-size: clamp(32px, 4vw, 48px); line-height: 1.04; letter-spacing: -0.048em; }
.section-intro > p:last-child, .protocol-copy > p:not(.section-kicker) { margin: 17px 0 0; color: #52696d; font-size: 14px; line-height: 1.7; }
.discipline-list { border-top: 1px solid #9eb2aa; }
.discipline-row { display: grid; grid-template-columns: 39px minmax(145px, 0.82fr) minmax(0, 1.2fr) auto; gap: 15px; align-items: center; min-height: 94px; padding: 14px 0; border-bottom: 1px solid #b9c9c1; }
.discipline-symbol { display: grid; width: 30px; height: 30px; place-items: center; color: var(--steel); border: 1px solid #9eb2aa; border-radius: 50%; font-family: Consolas, "Courier New", monospace; font-size: 9px; font-weight: 700; }
.discipline-row--robot .discipline-symbol { color: var(--cobalt); border-color: var(--cobalt); }
.discipline-row--rocket .discipline-symbol { color: #aa5c30; border-color: #c99b57; }
.discipline-row--tower .discipline-symbol { color: var(--ember); border-color: var(--ember); }
.discipline-row--rts .discipline-symbol { color: var(--signal); border-color: var(--signal); }
.discipline-name h3 { margin: 0; font-size: 14px; letter-spacing: -0.02em; }
.discipline-name span { display: block; margin-top: 6px; color: #60777b; font-family: Consolas, "Courier New", monospace; font-size: 8px; letter-spacing: 0.03em; }
.discipline-row > p { margin: 0; color: #52696d; font-size: 12px; line-height: 1.5; }
.discipline-action { color: #314e56; font-family: Consolas, "Courier New", monospace; font-size: 9px; text-align: right; }
.disciplines > .section-link { grid-column: 2; justify-self: start; margin-top: -18px; }

.protocol-section { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: clamp(35px, 8vw, 112px); align-items: start; padding: 61px clamp(24px, 5vw, 64px); color: #f5f7f2; background: var(--steel); }
.protocol-copy { max-width: 450px; }
.protocol-copy .section-kicker { color: #a1d0bf; }
.protocol-copy h2 { font-size: clamp(31px, 4vw, 47px); }
.protocol-copy > p:not(.section-kicker) { color: #d3dfda; }
.protocol-copy .section-link { display: inline-block; margin-top: 21px; color: #f5f7f2; }
.protocol-copy .section-link span { color: #e9b765; }
.protocol-steps { margin: 0; padding: 0; border-top: 1px solid rgba(220, 229, 223, 0.25); list-style: none; }
.protocol-steps li { display: grid; grid-template-columns: 32px minmax(0, 1fr) auto; gap: 13px; align-items: center; min-height: 68px; border-bottom: 1px solid rgba(220, 229, 223, 0.25); }
.protocol-steps li > span { color: #e9b765; font-family: Consolas, "Courier New", monospace; font-size: 10px; }
.protocol-steps strong { display: block; font-size: 12px; }
.protocol-steps small { display: block; margin-top: 4px; color: #b7cbc3; font-size: 10px; }
.protocol-steps code { color: #b4d4c6; font-family: Consolas, "Courier New", monospace; font-size: 9px; }

.evidence-band { display: grid; grid-template-columns: minmax(190px, 0.75fr) minmax(0, 1.25fr) auto; gap: 28px; align-items: center; padding: 54px 0; border-bottom: 1px solid #9eb2aa; }
.evidence-band .section-kicker { margin-bottom: 9px; }
.evidence-band h2 { font-size: 33px; }
.evidence-points { display: grid; gap: 10px; }
.evidence-points p { display: flex; gap: 12px; align-items: baseline; margin: 0; color: #435e64; font-size: 12px; }
.evidence-points span { color: var(--signal); font-family: Consolas, "Courier New", monospace; font-size: 9px; font-weight: 700; }
.evidence-band > a { min-width: max-content; color: var(--steel); font-size: 11px; font-weight: 750; text-underline-offset: 4px; }

.closing-cta { display: flex; justify-content: space-between; gap: 35px; align-items: center; padding: 68px 0 74px; }
.closing-cta .section-kicker { margin-bottom: 10px; }
.closing-cta h2 { font-size: clamp(36px, 5vw, 56px); }
.closing-cta p:not(.section-kicker) { margin: 11px 0 0; color: #52696d; font-size: 14px; }
.closing-actions { justify-content: flex-end; margin: 0; }
.closing-actions .button-quiet { display: inline-flex; min-height: 44px; align-items: center; }
.site-footer { display: flex; align-items: center; gap: 17px; padding: 20px 0 27px; border-top: 1px solid #9eb2aa; color: #60777b; font-size: 10px; }
.footer-brand { color: var(--ink); font-family: Bahnschrift, "Arial Narrow", sans-serif; font-size: 12px; font-weight: 800; text-decoration: none; }
.site-footer nav { display: flex; gap: 17px; margin-left: auto; }
.site-footer nav a { color: #435e64; font-size: 10px; font-weight: 700; text-underline-offset: 3px; }

@media (max-width: 1050px) {
  .site-header { flex-wrap: wrap; padding: 13px 0; }
  .site-header nav { order: 3; width: 100%; justify-content: flex-start; }
  .presentation-hero { grid-template-columns: minmax(0, 0.85fr) minmax(370px, 1.15fr); gap: 32px; }
  .discipline-row { grid-template-columns: 34px minmax(135px, 0.75fr) minmax(0, 1fr); }
  .discipline-action { grid-column: 2 / -1; margin-top: -8px; text-align: left; }
  .evidence-band { grid-template-columns: minmax(170px, 0.75fr) minmax(0, 1.25fr); }
  .evidence-band > a { grid-column: 2; }
}

@media (max-width: 760px) {
  .site-shell { width: min(100% - 36px, 650px); }
  .site-header { gap: 12px; }
  .site-header nav { gap: 16px; overflow-x: auto; padding: 3px 0; }
  .header-cta { margin-left: auto; }
  .presentation-hero { grid-template-columns: 1fr; padding: 55px 0 45px; }
  .hero-copy { max-width: 650px; }
  .arena-visual { max-width: 620px; }
  .project-note { grid-template-columns: 1fr; gap: 12px; }
  .disciplines { grid-template-columns: 1fr; gap: 24px; padding: 58px 0; }
  .section-intro { max-width: 560px; }
  .disciplines > .section-link { grid-column: 1; margin-top: 0; }
  .protocol-section { grid-template-columns: 1fr; gap: 30px; padding: 40px 27px; }
  .protocol-copy { max-width: 600px; }
  .closing-cta { align-items: flex-start; flex-direction: column; padding: 53px 0; }
  .closing-actions { justify-content: flex-start; }
}

@media (max-width: 520px) {
  html { scroll-behavior: auto; }
  .site-shell { width: min(100% - 28px, 460px); }
  .site-header { min-height: 70px; }
  .site-brand small { max-width: 150px; font-size: 9px; }
  .site-header nav { gap: 15px; }
  .site-header nav a { min-width: max-content; font-size: 11px; }
  .header-cta { min-height: 36px; padding: 7px 9px; font-size: 10px; }
  .presentation-hero { gap: 28px; padding-top: 44px; }
  .hero-copy h1 { font-size: clamp(43px, 13vw, 61px); }
  .hero-description { font-size: 14px; }
  .hero-facts { gap: 21px; margin-top: 32px; }
  .hero-facts strong { font-size: 20px; }
  .hero-facts span { font-size: 9px; }
  .arena-visual { padding: 13px 12px 11px; box-shadow: 7px 7px 0 rgba(49, 78, 86, 0.12); }
  .visual-bottomline { gap: 8px; font-size: 7px; }
  .visual-bottomline span::before { width: 4px; height: 4px; margin-right: 4px; }
  .project-note { padding: 18px 0; }
  .project-note p { font-size: 13px; }
  .disciplines { padding: 48px 0; }
  .discipline-row { grid-template-columns: 30px minmax(0, 1fr); gap: 8px 11px; padding: 15px 0; }
  .discipline-symbol { width: 27px; height: 27px; }
  .discipline-row > p { grid-column: 2; }
  .discipline-action { grid-column: 2; margin-top: 0; }
  .protocol-section { padding: 32px 18px; }
  .protocol-steps li { grid-template-columns: 26px minmax(0, 1fr); gap: 9px; padding: 10px 0; }
  .protocol-steps code { grid-column: 2; }
  .evidence-band { grid-template-columns: 1fr; gap: 20px; padding: 40px 0; }
  .evidence-band > a { grid-column: 1; }
  .site-footer { align-items: flex-start; flex-wrap: wrap; }
  .site-footer span { width: calc(100% - 90px); }
  .site-footer nav { width: 100%; margin: 3px 0 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}