:root {
  color-scheme: dark;
  --bg: #0b0f0c;
  --panel: #101612;
  --panel-strong: #131914;
  --line: #1f2a22;
  --line-strong: #2a362d;
  --text: #e6e6e6;
  --muted: #9ca3af;
  --accent: #4ade80;
  --accent-soft: rgba(74, 222, 128, 0.12);
  --font-sans: Inter, "SF Pro Display", "Segoe UI", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", "SF Mono", Consolas,
    "Liberation Mono", Menlo, monospace;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  min-height: 100vh;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

.page-shell {
  width: min(900px, calc(100vw - 2rem));
  margin: 0 auto;
  padding:
    max(1.25rem, env(safe-area-inset-top))
    max(1rem, env(safe-area-inset-right))
    max(4rem, env(safe-area-inset-bottom))
    max(1rem, env(safe-area-inset-left));
}

.site-header,
.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem 1.5rem;
}

.site-header {
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

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

.brand,
.back-link,
.site-nav,
.site-footer,
.eyebrow,
.focus-list,
.section-link,
.cta-link,
.email-link,
.subhead,
.diagram {
  font-family: var(--font-mono);
}

.brand,
.back-link,
.site-nav a,
.site-footer a {
  font-size: 0.9rem;
}

.brand {
  font-weight: 600;
  letter-spacing: 0.04em;
}

.back-link {
  color: var(--muted);
}

.site-nav,
.site-footer {
  color: var(--muted);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem 1.25rem;
}

.site-nav a,
.site-footer a,
.back-link,
.section-link,
.cta-link,
.email-link {
  text-underline-offset: 0.18em;
  transition:
    color 120ms ease,
    text-decoration-color 120ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-footer a:hover,
.site-footer a:focus-visible,
.back-link:hover,
.back-link:focus-visible,
.section-link:hover,
.section-link:focus-visible,
.cta-link:hover,
.cta-link:focus-visible,
.email-link:hover,
.email-link:focus-visible {
  color: var(--accent);
  text-decoration: underline;
}

.section {
  margin-top: 3rem;
}

.hero {
  margin-top: 2rem;
}

.eyebrow,
.subhead {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p,
ul,
ol,
pre {
  margin: 0;
}

h1 {
  margin-top: 0.65rem;
  font-size: clamp(3rem, 8vw, 5rem);
  line-height: 0.94;
  letter-spacing: -0.05em;
  font-weight: 700;
}

.hero h2,
.section-heading h2 {
  font-size: clamp(1.25rem, 3.5vw, 1.75rem);
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.hero h2 {
  margin-top: 0.85rem;
}

.lede,
.panel li,
.panel p,
.work-list li {
  max-width: 42rem;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text);
}

.lede {
  margin-top: 1.25rem;
  color: var(--muted);
}

.focus-list,
.panel ul,
.work-list {
  padding-left: 0;
  list-style: none;
}

.focus-list {
  margin-top: 1.5rem;
  display: grid;
  gap: 0.55rem;
  font-size: 0.95rem;
}

.hero-actions {
  display: grid;
  gap: 0.55rem;
  margin-top: 1.5rem;
}

.cta-link,
.section-link,
.email-link {
  width: fit-content;
  font-size: 0.95rem;
}

.email-link {
  color: var(--muted);
}

.section-heading {
  margin-bottom: 1rem;
}

.section-copy {
  max-width: 42rem;
  margin-top: 0.5rem;
  color: var(--muted);
  line-height: 1.7;
}

.panel-stack {
  display: grid;
  gap: 1rem;
}

.panel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.panel {
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--panel);
}

.panel h3 {
  font-size: 1.15rem;
  line-height: 1.25;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.panel ul,
.work-list {
  display: grid;
  gap: 0.5rem;
  margin-top: 1rem;
}

.panel ul li {
  position: relative;
  padding-left: 1rem;
}

.panel ul li::before {
  content: "-";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--font-mono);
}

.section-link {
  display: inline-block;
  margin-top: 1rem;
  color: var(--accent);
}

.diagram {
  padding: 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  background: var(--panel-strong);
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.6;
  overflow-x: auto;
}

.subhead {
  margin-top: 1.25rem;
}

.statement {
  margin-top: 1.25rem;
  font-weight: 600;
}

.work-list {
  counter-reset: work;
}

.work-list li {
  position: relative;
  padding-left: 2rem;
}

.work-list li::before {
  counter-increment: work;
  content: counter(work) ".";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--font-mono);
}

::selection {
  background: var(--accent-soft);
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100vw, calc(100vw - 1rem));
    padding:
      max(1rem, env(safe-area-inset-top))
      max(0.75rem, env(safe-area-inset-right))
      max(2.5rem, env(safe-area-inset-bottom))
      max(0.75rem, env(safe-area-inset-left));
  }

  .site-header,
  .site-nav,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .panel-grid {
    grid-template-columns: 1fr;
  }

  .panel {
    padding: 1rem;
  }

  .diagram {
    font-size: 0.88rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-nav a,
  .site-footer a,
  .section-link,
  .cta-link,
  .email-link {
    transition: none;
  }
}