:root {
  color-scheme: dark;
  --bg: #071522;
  --panel: #0b1d2e;
  --panel-raised: #10263a;
  --text: #f5f8fb;
  --muted: #d0deea;
  --quiet: #b5c7d7;
  --cyan: #7ce9f1;
  --cyan-soft: #b7f6f8;
  --violet: #c7a8ff;
  --amber: #f5d58b;
  --line: #29465d;
  --line-soft: #1b354a;
  --serif: Georgia, "Times New Roman", serif;
  --sans: Arial, "Helvetica Neue", system-ui, sans-serif;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body { margin: 0; min-width: 320px; background: radial-gradient(ellipse at 74% -10%, #123655 0, transparent 38rem), var(--bg); color: var(--text); font: 18px/1.65 var(--sans); }
a { color: var(--cyan-soft); text-underline-offset: .2em; }
a:hover { color: #fff; }
button, input, select { font: inherit; }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 4px; }
::selection { color: #071522; background: var(--cyan); }

.site-shell { width: min(1200px, calc(100% - 64px)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 20; top: 12px; left: 12px; transform: translateY(-150%); padding: 10px 15px; color: #071522; background: var(--cyan-soft); border-radius: 4px; }
.skip-link:focus { transform: translateY(0); }
.topbar { display: flex; min-height: 88px; align-items: center; justify-content: space-between; gap: 25px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--text); text-decoration: none; }
.brand-mark { display: grid; width: 44px; height: 44px; place-items: center; border: 1px solid #458c9a; border-radius: 50%; color: var(--cyan); font: 30px/1 var(--serif); }
.brand-words, .footer-brand > span:last-child { display: grid; line-height: 1.15; }
.brand-words strong, .footer-brand strong { font: 600 21px/1.1 var(--serif); letter-spacing: .13em; }
.brand-words small, .footer-brand small { margin-top: 5px; color: var(--muted); font: 18px/1.25 var(--sans); letter-spacing: .07em; }
.top-nav { display: flex; align-items: center; gap: 25px; }
.top-nav a { color: var(--muted); font-size: 18px; text-decoration: none; }
.top-nav a:hover { color: var(--cyan); }
.preview-pill { display: inline-flex; align-items: center; gap: 9px; padding: 7px 12px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 18px; white-space: nowrap; }

.hero { padding: clamp(62px, 9vw, 110px) 0 35px; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 15px; color: var(--cyan); font-size: 18px; line-height: 1.45; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.eyebrow-rule { display: inline-block; width: 28px; height: 2px; background: var(--cyan); }
h1, h2, h3, p { margin-top: 0; }
.hero h1 { max-width: 1000px; margin: 0; font: 400 clamp(3.4rem, 8.3vw, 7.2rem)/.98 var(--serif); letter-spacing: -.04em; }
.hero h1 em { color: var(--cyan); font-weight: 400; }
.hero-lede { max-width: 920px; margin: 25px 0 0; color: var(--muted); font-size: clamp(1.15rem, 2vw, 1.35rem); line-height: 1.65; }
.hero-actions { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; margin-top: 29px; }
.button { display: inline-flex; min-height: 52px; align-items: center; justify-content: center; gap: 12px; padding: 12px 18px; border: 1px solid transparent; border-radius: 4px; font-size: 18px; font-weight: 700; line-height: 1.35; text-decoration: none; transition: transform .18s ease, background .18s ease, border-color .18s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { border-color: var(--cyan); color: #061820; background: var(--cyan); }
.button-primary:hover { color: #061820; background: var(--cyan-soft); }
.button-secondary { border-color: #577d97; color: var(--text); background: #0d2032; }
.button-secondary:hover { border-color: var(--cyan); background: #132c41; }
.text-link { font-size: 18px; text-decoration: none; }
.hero-note { margin: 18px 0 0; color: var(--quiet); font-size: 18px; }

.ecosystem-visual { margin: 0 0 96px; padding: 10px; border: 1px solid #2a566c; background: #06111c; box-shadow: 0 0 36px #44dbea12; }
.ecosystem-visual img { display: block; width: 100%; height: auto; }
.ecosystem-visual figcaption { padding: 9px 9px 1px; color: var(--quiet); font-size: 18px; }
.section-heading { max-width: 880px; margin-bottom: 25px; }
.section-heading h2, .values-heading h2, .questions-copy h2 { margin: 0 0 12px; font: 400 clamp(2.3rem, 5vw, 4rem)/1.04 var(--serif); letter-spacing: -.025em; }
.section-heading > p:last-child, .values-heading > p:last-child, .questions-copy > p:last-child { margin: 0; color: var(--muted); font-size: 18px; }

.story-section { display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); gap: clamp(30px, 7vw, 86px); align-items: start; margin: 0 0 104px; padding: 36px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.story-section .section-heading { margin: 0; }
.story-source { padding: 24px; border-left: 3px solid var(--violet); background: linear-gradient(125deg, #112238, #091725 82%); }
.story-source p { margin: 0 0 16px; color: var(--muted); font-size: 18px; line-height: 1.65; }
.story-source p strong { color: var(--text); }
.story-source .button { margin-top: 4px; }

.why-section { margin: 0 0 100px; }
.why-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.why-card { min-width: 0; padding: 23px 22px; border: 1px solid var(--line); background: linear-gradient(145deg, #0d2234, #091725 82%); }
.why-card:nth-child(2) { border-top-color: var(--violet); }
.why-card:nth-child(3) { border-top-color: var(--cyan); }
.why-label { margin: 0 0 12px; color: var(--cyan); font-size: 18px; font-weight: 700; letter-spacing: .08em; }
.why-card h3 { margin: 0 0 10px; font: 400 clamp(1.55rem, 2.8vw, 2rem)/1.16 var(--serif); }
.why-card p:last-child { margin: 0; color: var(--muted); font-size: 18px; line-height: 1.6; }

.principle-band { display: grid; grid-template-columns: minmax(0, .86fr) minmax(0, 1.14fr); gap: clamp(28px, 7vw, 80px); align-items: start; margin: 0 0 84px; padding: 34px 30px; border: 1px solid #2a7890; background: linear-gradient(105deg, #0b2638, #0a1b2b 72%); box-shadow: inset 0 1px #7ce9f122; }
.principle-band h2 { margin: 0; font: 400 clamp(2rem, 4vw, 3.2rem)/1.08 var(--serif); }
.principle-copy p { margin: 0 0 14px; color: var(--muted); font-size: 18px; line-height: 1.65; }
.principle-copy p:last-child { margin-bottom: 0; }
.questions-section { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 30px; align-items: end; margin: 0 0 96px; padding-bottom: 30px; border-bottom: 1px solid var(--line); }
.questions-copy { max-width: 850px; }
.questions-section > .text-link { max-width: 340px; }

.directory-feature { display: grid; grid-template-columns: 62px minmax(0, 1fr) auto; gap: 22px; align-items: center; margin: 0 0 96px; padding: 28px 30px; border: 1px solid #2a7890; background: linear-gradient(105deg, #0b2638, #0a1b2b 72%); box-shadow: inset 0 1px #7ce9f122; }
.feature-symbol { display: grid; width: 54px; height: 54px; place-items: center; border: 1px solid #478da1; border-radius: 50%; color: var(--cyan); font-size: 26px; }
.feature-copy .eyebrow { margin-bottom: 8px; }
.feature-copy h2 { margin: 0 0 7px; font: 400 clamp(1.8rem, 3vw, 2.5rem)/1.1 var(--serif); }
.feature-copy > p:last-child { max-width: 690px; margin: 0; color: var(--muted); font-size: 18px; }
.focus-section { margin: 0 0 108px; }
.focus-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin: 0; padding: 0; list-style: none; }
.focus-item { display: flex; min-height: 78px; align-items: center; gap: 14px; padding: 14px 16px; border: 1px solid var(--line); background: #0a1c2b; }
.focus-number { color: var(--cyan); font-size: 18px; font-weight: 700; }
.focus-name { font-size: 18px; line-height: 1.35; }

.roles-section { margin: 0 0 104px; }
.roles-heading { display: flex; max-width: none; justify-content: space-between; align-items: flex-end; gap: 32px; }
.roles-heading > div { max-width: 820px; }
.roles-count { display: flex; align-items: center; gap: 11px; margin: 0 0 4px; color: var(--muted); font-size: 18px; line-height: 1.4; white-space: nowrap; }
.roles-count strong { color: var(--cyan); font: 400 3.5rem/.9 var(--serif); }
.role-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.role-card { position: relative; display: flex; min-width: 0; flex-direction: column; padding: 24px 24px 22px 28px; border: 1px solid var(--line); background: linear-gradient(145deg, #0d2234, #091725 82%); }
.role-card::before { position: absolute; top: 0; bottom: 0; left: 0; width: 3px; background: linear-gradient(var(--cyan), var(--violet) 72%, transparent); content: ""; }
.role-card:nth-child(4n + 2)::before, .role-card:nth-child(4n + 3)::before { background: linear-gradient(var(--violet), var(--cyan) 72%, transparent); }
.role-card-heading { display: flex; min-height: 31px; justify-content: space-between; align-items: center; gap: 10px; }
.stage-label { display: inline-flex; align-items: center; min-height: 30px; padding: 4px 10px; border: 1px solid #41627b; border-radius: 99px; color: var(--cyan-soft); font-size: 18px; line-height: 1.3; }
.role-spark { color: var(--violet); font-size: 22px; }
.role-card h3 { margin: 15px 0 6px; font: 400 clamp(1.65rem, 3vw, 2.1rem)/1.12 var(--serif); }
.role-project { margin: 0 0 12px; color: var(--quiet); font-size: 18px; line-height: 1.45; }
.role-summary { margin: 0 0 14px; color: var(--muted); font-size: 18px; line-height: 1.6; }
.role-boundary { margin: 0 0 18px; padding: 11px 13px; border-left: 2px solid var(--violet); background: #101d2b; color: var(--muted); font-size: 18px; line-height: 1.55; }
.role-boundary strong { color: var(--text); }
.role-links, .contribute-links { display: flex; flex-wrap: wrap; align-items: center; gap: 11px 20px; margin-top: auto; padding-top: 4px; }
.role-primary-link { display: inline-flex; min-height: 44px; align-items: center; padding: 8px 12px; border: 1px solid #397183; border-radius: 4px; color: var(--cyan-soft); font-size: 18px; font-weight: 700; text-decoration: none; }
.role-primary-link::after { margin-left: 8px; content: "↗"; }
.role-primary-link:hover { border-color: var(--cyan); background: #0e2939; }
.role-secondary-link { font-size: 18px; }

.contribute-section { margin: 0 0 96px; padding-top: 40px; border-top: 1px solid var(--line); }
.contribute-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.contribute-card { display: flex; flex-direction: column; gap: 11px; padding: 24px; border: 1px solid var(--line); background: #0a1c2b; }
.contribute-card h3 { margin: 0; font: 400 1.7rem/1.2 var(--serif); }
.contribute-card p { margin: 0; color: var(--muted); font-size: 18px; line-height: 1.6; }
.story-boundary-note { margin: 18px 0 0; padding: 14px 16px; border-left: 2px solid var(--amber); color: var(--muted); font-size: 18px; }

.values-section { display: grid; grid-template-columns: minmax(260px, .75fr) minmax(0, 1.25fr); gap: clamp(32px, 8vw, 100px); padding: 44px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.values-heading { align-self: start; }
.values-heading h2 { max-width: 500px; }
.values-list article { display: grid; grid-template-columns: 44px 1fr; gap: 13px; padding: 16px 0; border-bottom: 1px solid var(--line-soft); }
.values-list article:last-child { border: 0; }
.values-list article > span { padding-top: 3px; color: var(--cyan); font-size: 18px; font-weight: 700; }
.values-list h3 { margin: 0 0 4px; font: 400 1.45rem/1.2 var(--serif); }
.values-list p { max-width: 610px; margin: 0; color: var(--muted); font-size: 18px; line-height: 1.55; }
.feedback-band { display: grid; grid-template-columns: minmax(0, 1.3fr) auto; gap: 28px; align-items: center; margin: 80px 0 42px; padding: 30px; border: 1px solid #45677d; background: linear-gradient(140deg, #102b40, #0a1a29 80%); }
.feedback-band h2 { max-width: 720px; margin: 0 0 10px; font: 400 clamp(2rem, 4vw, 3rem)/1.08 var(--serif); }
.feedback-band p:not(.eyebrow) { max-width: 770px; margin: 0; color: var(--muted); font-size: 18px; line-height: 1.6; }
.closing-band { display: flex; justify-content: space-between; align-items: center; gap: 22px; margin-bottom: 70px; padding: 28px 30px; border: 1px solid var(--line); background: radial-gradient(ellipse at right, #132b42, #091724 74%); }
.closing-band .eyebrow { margin-bottom: 6px; }
.closing-band h2 { margin: 0; font: 400 clamp(1.8rem, 3.5vw, 2.7rem)/1.08 var(--serif); }
.footer { display: grid; grid-template-columns: 1fr 1.35fr auto; gap: 18px 30px; align-items: start; padding: 25px 0 32px; border-top: 1px solid var(--line); }
.footer-brand { display: inline-flex; align-items: center; gap: 10px; }
.footer-mark { color: var(--cyan); font: 30px/1 var(--serif); }
.footer > p { max-width: 530px; margin: 0; color: var(--quiet); font-size: 18px; line-height: 1.55; }
.footer-links { display: grid; gap: 8px; }
.footer-links a { font-size: 18px; }
.footer .footer-date { grid-column: 1 / -1; max-width: none; padding-top: 13px; border-top: 1px solid var(--line-soft); font-size: 18px; }

@media (max-width: 900px) {
  .site-shell { width: min(100% - 44px, 820px); }
  .topbar { flex-wrap: wrap; padding: 12px 0; }
  .top-nav { order: 3; width: 100%; justify-content: space-between; gap: 16px; padding-top: 10px; border-top: 1px solid var(--line-soft); }
  .story-section, .principle-band { grid-template-columns: 1fr; gap: 24px; }
  .why-grid { grid-template-columns: 1fr; }
  .questions-section { grid-template-columns: 1fr; align-items: start; }
  .directory-feature { grid-template-columns: 54px 1fr; }
  .directory-feature .button { grid-column: 2; justify-self: start; }
  .focus-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contribute-grid { grid-template-columns: 1fr; }
  .values-section { gap: 35px; }
  .footer { grid-template-columns: 1fr 1.4fr; }
  .footer-links { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 12px 24px; }
}
@media (max-width: 650px) {
  body { font-size: 18px; }
  .site-shell { width: calc(100% - 34px); }
  .topbar { min-height: 76px; }
  .brand-mark { width: 38px; height: 38px; }
  .brand-words strong { font-size: 20px; }
  .brand-words small { font-size: 18px; }
  .top-nav { overflow-x: auto; justify-content: flex-start; gap: 23px; padding-bottom: 4px; }
  .top-nav a { flex: 0 0 auto; font-size: 18px; }
  .preview-pill { white-space: normal; }
  .hero { padding: 57px 0 27px; }
  .hero h1 { font-size: clamp(3.2rem, 13vw, 5.1rem); }
  .hero-lede { font-size: 18px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 16px; }
  .ecosystem-visual { margin-bottom: 68px; padding: 6px; }
  .ecosystem-visual figcaption { font-size: 18px; }
  .story-section { margin-bottom: 76px; padding: 28px 0; }
  .story-source { padding: 19px; }
  .why-section { margin-bottom: 76px; }
  .principle-band { margin-bottom: 68px; padding: 24px 19px; }
  .questions-section { margin-bottom: 72px; }
  .directory-feature { grid-template-columns: 45px 1fr; gap: 14px; margin-bottom: 75px; padding: 21px 18px; }
  .feature-symbol { width: 42px; height: 42px; font-size: 22px; }
  .feature-copy h2 { font-size: 1.9rem; }
  .feature-copy > p:last-child { font-size: 18px; }
  .directory-feature .button { grid-column: 1 / -1; }
  .focus-section, .roles-section { margin-bottom: 78px; }
  .section-heading h2, .values-heading h2, .questions-copy h2 { font-size: clamp(2.2rem, 10vw, 3.3rem); }
  .section-heading > p:last-child, .values-heading > p:last-child, .questions-copy > p:last-child { font-size: 18px; }
  .focus-list { gap: 8px; }
  .focus-item { min-height: 74px; gap: 9px; padding: 11px 10px; }
  .focus-name { font-size: 18px; }
  .roles-heading { align-items: flex-start; flex-direction: column; gap: 14px; }
  .role-grid { grid-template-columns: 1fr; }
  .role-card { padding: 21px 18px 19px 23px; }
  .role-card h3 { font-size: 1.8rem; }
  .role-summary, .role-boundary { font-size: 18px; }
  .role-links, .contribute-links { align-items: flex-start; flex-direction: column; }
  .contribute-section { margin-bottom: 76px; padding-top: 30px; }
  .contribute-card { padding: 20px 18px; }
  .values-section { grid-template-columns: 1fr; gap: 20px; padding: 34px 0; }
  .values-list p { font-size: 18px; }
  .feedback-band { grid-template-columns: 1fr; gap: 20px; margin-top: 60px; padding: 23px 19px; }
  .feedback-band p:not(.eyebrow) { font-size: 18px; }
  .closing-band { align-items: flex-start; flex-direction: column; margin-bottom: 48px; padding: 23px 19px; }
  .footer { grid-template-columns: 1fr; gap: 17px; }
  .footer-links { grid-column: auto; display: grid; }
  .footer .footer-date { grid-column: auto; }
}
@media (max-width: 390px) {
  .preview-pill { padding: 6px 9px; }
  .preview-pill span { width: 8px; height: 8px; }
  .brand-words small { letter-spacing: .02em; }
  .focus-item { align-items: flex-start; flex-direction: column; gap: 4px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}
@media (forced-colors: active) {
  .button, .brand-mark, .directory-feature, .role-card, .focus-item, .why-card, .contribute-card, .feedback-band { border: 1px solid CanvasText; }
}

/* Progressive disclosure keeps the story available without delaying contributor tasks. */
.guide-background { margin: 36px 0; border-block: 1px solid var(--line); padding: 20px 0; }
summary { cursor: pointer; font-size: 18px; padding: 12px 0; }
summary:focus-visible { outline: 2px solid var(--cyan); outline-offset: 4px; }
#start-work { scroll-margin-top: 24px; }

.pixie-helper { position: fixed; right: max(16px, env(safe-area-inset-right)); bottom: max(16px, env(safe-area-inset-bottom)); z-index: 50; max-width: min(360px, calc(100vw - 32px)); color: var(--text); }
.pixie-helper > summary { margin-left: auto; width: fit-content; min-height: 48px; padding: 12px 20px; border: 1px solid var(--cyan); border-radius: 28px; background: #10191d; color: #f4fbfc; list-style: none; }
.pixie-helper > summary::-webkit-details-marker { display: none; }
.pixie-helper nav { margin-top: 8px; padding: 20px; border: 1px solid var(--cyan); border-radius: 12px; background: #10191d; color: #f4fbfc; max-height: 65vh; overflow-y: auto; }
.pixie-helper nav p, .pixie-helper nav small { display: block; font-size: 18px; line-height: 1.5; margin: 12px 0; }
.pixie-helper nav a { display: block; padding: 12px 0; color: #a5f3e7; }
body { padding-bottom: 88px; }
@media print { .pixie-helper { display: none; } }