:root {
  --bg: #0d1117;
  --surface: #161b22;
  --elevated: #1c2128;
  --border: #30363d;
  --accent: #d97706;
  --accent-hover: #f59e0b;
  --primary: #e6edf3;
  --secondary: #7d8590;
  --success: #3fb950;

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

html { color-scheme: dark; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--primary);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

img { max-width: 100%; }

.wrap {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- header ---------- */

header.site {
  border-bottom: 1px solid var(--border);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--primary);
}

.wordmark img { width: 24px; height: 24px; border-radius: 6px; }

.site-nav nav {
  display: flex;
  gap: 28px;
  font-size: 0.9rem;
}

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

.site-nav nav a:hover { color: var(--primary); }

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 8px;
  padding: 12px 20px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #1a1206;
}

.btn-primary:hover { background: var(--accent-hover); }

.btn-secondary {
  background: transparent;
  border-color: var(--border);
  color: var(--primary);
}

.btn-secondary:hover { border-color: var(--secondary); }

.btn-small {
  padding: 8px 14px;
  font-size: 0.85rem;
  border-radius: 7px;
}

.btn[aria-disabled="true"] {
  opacity: 0.45;
  pointer-events: none;
}

/* ---------- hero ---------- */

.hero {
  padding: 72px 0 64px;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 4vw, 2.9rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 20px;
  max-width: 20ch;
}

.hero p.lede {
  color: var(--secondary);
  font-size: 1.05rem;
  max-width: 46ch;
  margin: 0 0 32px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.hero-actions .hint {
  font-size: 0.82rem;
  color: var(--secondary);
  font-family: var(--font-mono);
}

.platform-note {
  margin-top: 14px;
  font-size: 0.82rem;
  color: var(--secondary);
}

.platform-note a { color: var(--secondary); text-decoration: underline; text-underline-offset: 2px; }
.platform-note a:hover { color: var(--primary); }

/* terminal panel */

.terminal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.86rem;
}

.terminal-bar {
  display: flex;
  gap: 6px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}

.terminal-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
}

.terminal-body {
  padding: 20px 18px 22px;
  min-height: 190px;
}

.terminal-line {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  opacity: 0;
  transform: translateY(4px);
  animation: line-in 0.4s ease forwards;
}

.terminal-line .path { color: var(--primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.terminal-line .status { color: var(--secondary); }
.terminal-line.done .status { color: var(--success); }
.terminal-line.cmd { color: var(--accent-hover); margin-bottom: 10px; }
.terminal-line.summary { color: var(--secondary); margin-top: 10px; border-top: 1px dashed var(--border); padding-top: 12px; }

@keyframes line-in {
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .terminal-line { animation: none; opacity: 1; transform: none; }
}

/* ---------- sections ---------- */

section {
  padding: 56px 0;
  border-top: 1px solid var(--border);
}

section h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin: 0 0 8px;
}

section .section-lede {
  color: var(--secondary);
  max-width: 60ch;
  margin: 0 0 36px;
}

/* how it works */

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.step {
  display: flex;
  gap: 14px;
}

.step .num {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.9rem;
  padding-top: 2px;
}

.step h3 {
  font-size: 0.98rem;
  margin: 0 0 6px;
}

.step p {
  color: var(--secondary);
  font-size: 0.88rem;
  margin: 0;
}

/* feature manifest */

.manifest {
  border-top: 1px solid var(--border);
}

.manifest-row {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}

.manifest-row .name {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--primary);
}

.manifest-row .desc {
  color: var(--secondary);
  font-size: 0.92rem;
  max-width: 62ch;
}

/* trust */

.trust-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.trust-grid p {
  color: var(--secondary);
  font-size: 0.94rem;
}

.trust-grid h3 {
  font-size: 1rem;
  margin: 0 0 10px;
  color: var(--primary);
}

code, .code-block {
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.code-block {
  display: block;
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--primary);
  overflow-x: auto;
  margin: 10px 0 0;
}

/* download */

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.download-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px;
}

.download-card.recommended {
  border-color: var(--accent);
}

.download-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  margin: 0 0 4px;
}

.download-card .sub {
  color: var(--secondary);
  font-size: 0.82rem;
  margin: 0 0 16px;
}

.download-card .arch-links {
  display: flex;
  gap: 10px;
  margin-top: 10px;
}

.release-meta {
  margin-top: 20px;
  font-size: 0.85rem;
  color: var(--secondary);
  font-family: var(--font-mono);
}

.release-meta a { color: var(--secondary); text-decoration: underline; text-underline-offset: 2px; }
.release-meta a:hover { color: var(--primary); }

/* ---------- footer ---------- */

footer.site {
  border-top: 1px solid var(--border);
  padding: 32px 0 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--secondary);
  font-size: 0.85rem;
}

footer.site nav {
  display: flex;
  gap: 20px;
}

footer.site a {
  color: var(--secondary);
  text-decoration: none;
}

footer.site a:hover { color: var(--primary); }

/* ---------- privacy page ---------- */

.doc {
  padding: 56px 0 80px;
  max-width: 720px;
}

.doc h1 {
  font-family: var(--font-display);
  font-size: 2rem;
  margin: 0 0 6px;
}

.doc .updated {
  color: var(--secondary);
  font-size: 0.85rem;
  margin: 0 0 40px;
}

.doc h2 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 36px 0 12px;
}

.doc p, .doc li {
  color: var(--secondary);
  font-size: 0.96rem;
}

.doc a { color: var(--accent-hover); }

/* ---------- responsive ---------- */

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding: 48px 0; }
  .steps { grid-template-columns: 1fr 1fr; }
  .trust-grid { grid-template-columns: 1fr; }
  .download-grid { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .steps { grid-template-columns: 1fr; }
  .manifest-row { grid-template-columns: 1fr; gap: 4px; }
  .site-nav nav { display: none; }
}

:focus-visible {
  outline: 2px solid var(--accent-hover);
  outline-offset: 2px;
}