:root {
  color-scheme: dark;
  --bg: #0b0f14;
  --bg-alt: #0f141b;
  --surface: #141a22;
  --surface-strong: #1b2430;
  --border: #273142;
  --text: #e6edf5;
  --muted: #a6b3c2;
  --accent: #8fb2ff;
  --accent-strong: #4fd1c5;
  --accent-soft: rgba(143, 178, 255, 0.14);
  --shadow: 0 20px 60px rgba(6, 10, 16, 0.6);
  --radius: 18px;
  --max: 1120px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: radial-gradient(circle at top, rgba(79, 209, 197, 0.12), transparent 45%),
    radial-gradient(circle at 20% 20%, rgba(143, 178, 255, 0.16), transparent 35%),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

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

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

header {
  padding: 28px 0 8px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(145deg, #121822, #0b0f14);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  color: var(--accent-strong);
  font-weight: 700;
}

.nav-links {
  display: flex;
  gap: 18px;
  font-size: 0.95rem;
  color: var(--muted);
}

.nav-links a {
  padding: 6px 0;
}

.hero {
  padding: 72px 0 56px;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 36px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  margin: 0 0 12px;
  letter-spacing: -0.6px;
}

.hero p {
  margin: 0 0 12px;
  color: var(--muted);
}

.hero .subhead {
  font-size: 1.15rem;
  color: var(--text);
  margin-bottom: 18px;
}

.hero-card {
  background: linear-gradient(180deg, rgba(20, 26, 34, 0.95), rgba(12, 16, 22, 0.95));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}

.hero-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
  color: var(--muted);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--accent-strong);
  background: rgba(79, 209, 197, 0.12);
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(79, 209, 197, 0.3);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 20px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform 0.2s ease, border 0.2s ease, background 0.2s ease;
}

.button.primary {
  background: var(--accent);
  color: #0b0f14;
}

.button.secondary {
  border: 1px solid var(--border);
  color: var(--text);
  background: rgba(20, 26, 34, 0.8);
}

.button:hover {
  transform: translateY(-1px);
}

.section {
  padding: 56px 0;
}

.section h2 {
  margin: 0 0 12px;
  font-size: clamp(1.6rem, 3.2vw, 2.2rem);
}

.section p {
  margin: 0 0 12px;
  color: var(--muted);
}

.card-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
}

.card h3 {
  margin-top: 0;
  margin-bottom: 6px;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.arch {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.arch .arch-block {
  background: var(--surface-strong);
  border-radius: 14px;
  border: 1px solid var(--border);
  padding: 18px;
}

.screenshot {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.screenshot figcaption {
  padding: 14px 16px;
  color: var(--muted);
  font-size: 0.95rem;
  border-top: 1px solid var(--border);
  background: rgba(12, 16, 22, 0.6);
}

.code-block {
  background: #0d1117;
  border: 1px solid #1f2a38;
  border-radius: 12px;
  padding: 16px;
  font-family: var(--mono);
  font-size: 0.92rem;
  color: #d8e4f5;
  overflow-x: auto;
}

.note {
  background: var(--accent-soft);
  border: 1px solid rgba(143, 178, 255, 0.35);
  border-radius: 12px;
  padding: 14px 16px;
  color: var(--text);
  margin-top: 12px;
}

footer {
  padding: 40px 0 56px;
  border-top: 1px solid var(--border);
  background: rgba(9, 12, 16, 0.8);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
  font-size: 0.95rem;
}

.footer-links {
  display: flex;
  gap: 16px;
}

.tagline {
  color: var(--text);
}

@media (max-width: 720px) {
  .nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links {
    flex-wrap: wrap;
  }

  .hero {
    padding-top: 48px;
  }
}