:root {
  --bg: #f6f3eb;
  --bg-strong: #efe8dc;
  --panel: rgba(255, 255, 255, 0.72);
  --ink: #15130f;
  --muted: #5f594e;
  --accent: #14532d;
  --accent-soft: rgba(20, 83, 45, 0.12);
  --line: rgba(21, 19, 15, 0.12);
  --shadow: 0 24px 60px rgba(21, 19, 15, 0.08);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

html {
  background:
    radial-gradient(circle at top left, rgba(20, 83, 45, 0.1), transparent 30rem),
    linear-gradient(180deg, #fbf8f2 0%, var(--bg) 100%);
  color: var(--ink);
  font-family:
    "Iosevka Term",
    "IBM Plex Mono",
    "SFMono-Regular",
    "SF Mono",
    ui-monospace,
    Menlo,
    Monaco,
    Consolas,
    monospace;
}

body {
  margin: 0;
  min-height: 100vh;
}

a {
  color: inherit;
}

code,
pre {
  font: inherit;
}

.shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

.shell-narrow {
  max-width: 920px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 3rem;
  padding: 1rem 1.2rem;
  background: rgba(255, 255, 255, 0.48);
  border: 1px solid var(--line);
  border-radius: 999px;
  backdrop-filter: blur(16px);
}

.brand {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: lowercase;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.9rem 1.2rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
}

.hero {
  padding: 2.5rem;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.86), rgba(239, 232, 220, 0.92)),
    var(--bg-strong);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 8px);
  box-shadow: var(--shadow);
}

.hero-small {
  margin-bottom: 1.5rem;
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 14ch;
  margin-bottom: 1rem;
  font-size: clamp(2.3rem, 8vw, 4.9rem);
  line-height: 0.94;
  letter-spacing: -0.06em;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.4rem, 4vw, 2.2rem);
  letter-spacing: -0.04em;
}

h3 {
  font-size: 1rem;
}

.lede,
.card p,
.panel p,
.step-card p,
.footer,
.command-label,
.protocol-link {
  color: var(--muted);
  line-height: 1.6;
}

.hero-grid,
.card-grid,
.flow-grid,
.command-list {
  display: grid;
  gap: 1rem;
}

.hero-grid {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  margin-top: 2rem;
}

.panel,
.card,
.step-card,
.command-card {
  padding: 1.2rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.section {
  margin-top: 1.5rem;
  padding: 1.5rem 0;
}

.section-accent {
  padding: 1.8rem;
  background: var(--accent-soft);
  border: 1px solid rgba(20, 83, 45, 0.14);
  border-radius: calc(var(--radius) + 4px);
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.card-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.flow-grid {
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.command-list {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.command-label {
  margin-bottom: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.82rem;
}

pre,
.code-block {
  margin: 0;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.command-card pre,
.code-block {
  padding: 1rem;
  background: rgba(21, 19, 15, 0.92);
  color: #f7f4ee;
  border-radius: 16px;
}

.step-number {
  color: var(--accent);
  font-size: 0.86rem;
  letter-spacing: 0.08em;
}

.protocol-link {
  margin-top: 1.2rem;
}

.protocol-link a {
  text-decoration-thickness: 2px;
  text-underline-offset: 0.2em;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}

@media (max-width: 720px) {
  .shell {
    padding: 1rem 1rem 2.5rem;
  }

  .topbar,
  .footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding: 1.5rem;
  }
}