:root {
  color-scheme: dark;
  --bg: #080b10;
  --surface: #0f141c;
  --surface-strong: #151c26;
  --text: #f4f7fb;
  --muted: #a7b1c0;
  --line: #253041;
  --cyan: #65d9e8;
  --amber: #f2c879;
  --green: #86d7ae;
  --max: 72rem;
  --radius: 1.15rem;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 85% -10%, rgba(101, 217, 232, 0.12), transparent 32rem),
    radial-gradient(circle at -5% 28%, rgba(242, 200, 121, 0.08), transparent 28rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration-color: rgba(101, 217, 232, 0.58);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover,
a:focus-visible {
  color: var(--cyan);
}

:focus-visible {
  outline: 0.18rem solid var(--cyan);
  outline-offset: 0.2rem;
}

img,
svg {
  display: block;
  max-width: 100%;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  line-height: 1.12;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 15ch;
  margin-bottom: 1.4rem;
  font-size: clamp(3rem, 8vw, 6.8rem);
  font-weight: 760;
}

h2 {
  margin-bottom: 1.1rem;
  font-size: clamp(2rem, 4vw, 3.2rem);
}

h3 {
  margin-bottom: 0.7rem;
  font-size: 1.25rem;
}

p,
li {
  color: var(--muted);
}

strong {
  color: var(--text);
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.7rem 1rem;
  transform: translateY(-160%);
  border-radius: 0.6rem;
  background: var(--text);
  color: var(--bg);
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: min(calc(100% - 2rem), var(--max));
  min-width: 0;
  margin-inline: auto;
}

.site-header {
  position: relative;
  z-index: 10;
  border-bottom: 1px solid rgba(37, 48, 65, 0.72);
  background: rgba(8, 11, 16, 0.9);
}

.nav {
  display: flex;
  min-height: 4.8rem;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 750;
  text-decoration: none;
}

.brand-mark {
  width: 2.15rem;
  height: 2.15rem;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.4rem 1.15rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 650;
  text-decoration: none;
}

.nav-links a[aria-current="page"] {
  color: var(--text);
}

.hero {
  display: grid;
  min-height: min(50rem, calc(100vh - 4.8rem));
  align-content: center;
  padding-block: clamp(5rem, 12vw, 9rem);
}

.eyebrow {
  margin-bottom: 1.4rem;
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.lead {
  max-width: 49rem;
  margin-bottom: 2rem;
  color: #c4ccd7;
  font-size: clamp(1.15rem, 2vw, 1.45rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.8rem;
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--surface);
  color: var(--text);
  font-weight: 750;
  text-decoration: none;
}

.button.primary {
  border-color: var(--cyan);
  background: var(--cyan);
  color: #061014;
}

.button:hover,
.button:focus-visible {
  border-color: var(--cyan);
  color: var(--text);
}

.button.primary:hover,
.button.primary:focus-visible {
  background: #8ce5f0;
  color: #061014;
}

.signal-grid,
.project-grid,
.principle-grid,
.evidence-grid {
  display: grid;
  gap: 1rem;
}

.signal-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: clamp(3rem, 7vw, 5rem);
}

.signal,
.project-card,
.principle,
.evidence-card,
.callout {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(21, 28, 38, 0.92), rgba(15, 20, 28, 0.82));
  box-shadow: var(--shadow);
}

.signal {
  padding: 1.2rem;
}

.signal dt {
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.signal dd {
  margin: 0;
  font-weight: 700;
}

.section {
  padding-block: clamp(4.5rem, 9vw, 7.5rem);
  border-top: 1px solid rgba(37, 48, 65, 0.64);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(18rem, 0.85fr);
  gap: 2rem;
  align-items: end;
  margin-bottom: 2.6rem;
}

.section-heading p {
  margin-bottom: 0.4rem;
}

.project-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.project-card {
  display: flex;
  min-height: 20rem;
  flex-direction: column;
  padding: clamp(1.4rem, 4vw, 2.1rem);
}

.project-card .status,
.status {
  width: fit-content;
  margin-bottom: 1.4rem;
  padding: 0.25rem 0.55rem;
  border: 1px solid rgba(242, 200, 121, 0.38);
  border-radius: 999px;
  color: var(--amber);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.status.supporting {
  border-color: rgba(134, 215, 174, 0.38);
  color: var(--green);
}

.project-card p {
  flex-grow: 1;
}

.project-card a {
  width: fit-content;
  font-weight: 750;
}

.principle-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.principle,
.evidence-card {
  padding: 1.4rem;
}

.principle .index {
  display: block;
  margin-bottom: 1.2rem;
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.83rem;
}

.delivery-flow {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.6rem;
  margin: 2.5rem 0 1.2rem;
  padding: 0;
  list-style: none;
}

.delivery-flow li {
  position: relative;
  padding: 1rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  background: var(--surface);
  color: var(--text);
  font-size: 0.86rem;
  font-weight: 720;
  text-align: center;
}

.delivery-flow li:not(:last-child)::after {
  position: absolute;
  top: 50%;
  right: -0.56rem;
  z-index: 2;
  width: 0.5rem;
  color: var(--cyan);
  content: "→";
  transform: translateY(-50%);
}

.callout {
  padding: clamp(1.5rem, 4vw, 2.4rem);
}

.callout p:last-child,
.project-card p:last-child,
.principle p:last-child,
.evidence-card p:last-child {
  margin-bottom: 0;
}

.page-hero {
  padding-block: clamp(4.5rem, 10vw, 8rem);
}

.page-hero h1 {
  max-width: 17ch;
  font-size: clamp(2.8rem, 7vw, 5.6rem);
}

.page-hero .lead {
  margin-bottom: 0;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(2rem, 7vw, 6rem);
}

.content-grid + .content-grid {
  margin-top: 4rem;
}

.content-grid h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.content-grid ul,
.content-grid ol {
  margin-top: 0;
  padding-left: 1.2rem;
}

.content-grid li + li {
  margin-top: 0.65rem;
}

.evidence-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.label {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--cyan);
  font-size: 0.76rem;
  font-weight: 780;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.plain-list {
  padding: 0;
  list-style: none;
}

.plain-list li {
  padding-block: 0.8rem;
  border-bottom: 1px solid var(--line);
}

.site-footer {
  padding-block: 2rem;
  border-top: 1px solid var(--line);
}

.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-row p {
  margin: 0;
  font-size: 0.88rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.footer-links a {
  color: var(--muted);
  font-size: 0.86rem;
}

@media (max-width: 52rem) {
  .section-heading,
  .content-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .signal-grid,
  .principle-grid {
    grid-template-columns: 1fr;
  }

  .delivery-flow {
    grid-template-columns: 1fr;
  }

  .delivery-flow li:not(:last-child)::after {
    top: auto;
    right: 50%;
    bottom: -0.75rem;
    transform: translateX(50%) rotate(90deg);
  }
}

@media (max-width: 42rem) {
  .nav,
  .footer-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    padding-block: 1rem;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .project-grid,
  .evidence-grid {
    grid-template-columns: 1fr;
  }

  h1,
  .page-hero h1 {
    font-size: clamp(2.55rem, 12vw, 4rem);
  }

  .eyebrow {
    overflow-wrap: anywhere;
  }

  .actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
    max-width: 22rem;
    white-space: normal;
    text-align: center;
  }

  .hero {
    min-height: auto;
  }
}

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

@media print {
  :root {
    color-scheme: light;
  }

  body {
    background: #fff;
    color: #111;
  }

  .site-header,
  .site-footer,
  .actions {
    display: none;
  }

  p,
  li {
    color: #333;
  }
}