:root {
  color-scheme: dark;
  --bg: #0d1117;
  --surface: #161b22;
  --surface-2: #1c2129;
  --ink: #e6edf3;
  --muted: #8b949e;
  --line: #30363d;
  --accent: #58a6ff;
  --accent-dim: rgba(88, 166, 255, 0.12);
  --green: #3fb950;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { background: var(--bg); }

body {
  margin: 0;
  background:
    radial-gradient(1200px 500px at 75% -10%, rgba(88, 166, 255, 0.07), transparent 60%),
    var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code, pre, kbd { font-family: var(--mono); }

:not(pre) > code {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 0.1em 0.35em;
  font-size: 0.875em;
  color: #a5d6ff;
}

a:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ---------- nav ---------- */

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  max-width: 1160px;
  width: 100%;
  margin: 0 auto;
  padding: 0 28px;
  height: 64px;
  border-bottom: 1px solid var(--line);
}

.logo {
  font-family: var(--mono);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}

.logo:hover { text-decoration: none; }

.logo-cursor {
  color: var(--accent);
  animation: blink 1.2s steps(1) infinite;
}

@keyframes blink { 50% { opacity: 0; } }

.nav nav {
  display: flex;
  gap: 24px;
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.9rem;
}

.nav nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 4px 2px;
  border-bottom: 1px solid transparent;
}

.nav nav a:hover {
  color: var(--ink);
  text-decoration: none;
  border-bottom-color: var(--accent);
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
  max-width: 1160px;
  width: 100%;
  margin: 0 auto;
  padding: 72px 28px 56px;
}

.kicker {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 14px;
}

.hero h1 {
  font-family: var(--mono);
  font-size: clamp(3.2rem, 8vw, 5rem);
  letter-spacing: -0.05em;
  line-height: 1;
  margin: 0 0 18px;
}

.tagline {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 34em;
  margin: 0 0 28px;
}

.actions { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  font-family: var(--mono);
  font-size: 0.92rem;
  padding: 10px 20px;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #0d1117;
  font-weight: 600;
  text-decoration: none;
}

.btn:hover { text-decoration: none; filter: brightness(1.1); }

.btn.ghost {
  background: transparent;
  color: var(--accent);
  border-color: var(--line);
}

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

/* ---------- terminal ---------- */

.term {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

.term-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-2);
}

.term-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--line);
}

.term-dot:first-child { background: #f85149; }
.term-dot:nth-child(2) { background: #d29922; }
.term-dot:nth-child(3) { background: #3fb950; }

.term-title {
  margin-left: 8px;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
}

.term-body {
  margin: 0;
  padding: 18px 20px 20px;
  font-size: 0.82rem;
  line-height: 1.75;
  overflow-x: auto;
  color: var(--ink);
}

.term-body .p { color: var(--green); font-weight: 700; user-select: none; }
.term-body .ok { color: var(--green); }
.term-body .dim { color: var(--muted); }

/* ---------- features ---------- */

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.feature {
  background: var(--bg);
  padding: 34px 30px;
}

.feature h3 {
  font-family: var(--mono);
  font-size: 0.98rem;
  letter-spacing: -0.01em;
  margin: 0 0 10px;
  color: var(--ink);
}

.feature h3::before {
  content: "//";
  color: var(--accent);
  margin-right: 8px;
}

.feature p { margin: 0; color: var(--muted); font-size: 0.92rem; }

/* ---------- showcase ---------- */

.showcase {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 48px;
  align-items: center;
  max-width: 1160px;
  width: 100%;
  margin: 0 auto;
  padding: 72px 28px;
}

.showcase h2 {
  font-family: var(--mono);
  font-size: 1.7rem;
  letter-spacing: -0.03em;
  margin: 0 0 14px;
}

.showcase p { color: var(--muted); margin: 0 0 22px; }

.mini-term {
  margin: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  font-size: 0.8rem;
  line-height: 1.8;
  overflow-x: auto;
}

.mini-term .p { color: var(--green); font-weight: 700; }
.mini-term .dim { color: var(--muted); }

.showcase-shot {
  margin: 0;
}

.showcase-shot img {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.showcase-shot figcaption {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  text-align: center;
}

/* ---------- closing prose ---------- */

.closing {
  max-width: 780px;
  width: 100%;
  margin: 0 auto;
  padding: 8px 28px 80px;
}

.prose { color: var(--muted); }

.prose strong { color: var(--ink); }

.prose p { margin: 0 0 1.1em; }

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

.foot {
  margin-top: auto;
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.foot-row {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
  max-width: 1160px;
  margin: 0 auto;
  padding: 26px 28px 8px;
}

.foot-brand {
  font-family: var(--mono);
  font-weight: 700;
}

.foot-row nav {
  display: flex;
  gap: 20px;
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.85rem;
}

.foot-note {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 28px 26px;
  color: var(--muted);
  font-size: 0.8rem;
}

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

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 48px; }
  .features { grid-template-columns: 1fr 1fr; }
  .showcase { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .features { grid-template-columns: 1fr; }
  .nav nav { gap: 14px; font-size: 0.82rem; }
  .foot-row nav { margin-left: 0; }
}