:root {
  --bg: #f7f8fc;
  --surface: #ffffff;
  --border: #e3e7f0;
  --text: #16224a;
  --muted: #5d6884;
  --accent: #3b5bdb;
  --accent-hover: #2f4bc0;
  --accent-soft: #e7ecff;
  --code-bg: #eef1f8;
  --shadow: 0 1px 2px rgba(22, 34, 74, 0.05), 0 8px 24px rgba(22, 34, 74, 0.06);
  --radius: 14px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1218;
    --surface: #181c26;
    --border: #272d3c;
    --text: #e8ebf4;
    --muted: #97a0b6;
    --accent: #7b93ff;
    --accent-hover: #93a7ff;
    --accent-soft: #222b4d;
    --code-bg: #1f2431;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Ubuntu, Cantarell, sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  text-decoration: underline;
}

svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.container {
  width: min(1120px, 100% - 32px);
  margin-inline: auto;
}

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

.small {
  font-size: 14px;
}

kbd {
  display: inline-block;
  min-width: 1.6em;
  padding: 0 6px;
  margin: 0 2px;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 6px;
  background: var(--surface);
  font: 0.8em/1.7 ui-monospace, SFMono-Regular, Menlo, monospace;
  text-align: center;
  color: var(--text);
}

code {
  font: 0.9em ui-monospace, SFMono-Regular, Menlo, monospace;
  background: var(--code-bg);
  padding: 1px 6px;
  border-radius: 6px;
  word-break: break-word;
}

/* Navigation */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 20px;
}

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

.nav nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 15px;
}

.nav nav a {
  color: var(--muted);
}

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

.nav .github {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}

.nav .github svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  stroke: none;
}

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  align-items: center;
  gap: 48px;
  padding: 48px 0 72px;
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
}

h1 {
  font-size: clamp(36px, 5.5vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin: 18px 0 20px;
}

.accent {
  color: var(--accent);
}

.lead {
  font-size: 19px;
  color: var(--muted);
  max-width: 34em;
  margin: 0 0 28px;
}

.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  font-size: 16px;
  transition: transform 0.12s, background 0.12s;
}

.button:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

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

.button.small {
  padding: 8px 14px;
  font-size: 14px;
}

.hero-shot {
  display: flex;
  justify-content: center;
}

.hero-shot img {
  width: min(360px, 100%);
  height: auto;
  border-radius: 18px;
  border: 1px solid var(--border);
  box-shadow: 0 30px 60px -20px rgba(22, 34, 74, 0.35), var(--shadow);
  transform: rotate(1.5deg);
}

/* Sections */
section {
  padding: 56px 0;
}

h2 {
  font-size: clamp(28px, 3.5vw, 38px);
  letter-spacing: -0.02em;
  margin: 0 0 8px;
  text-align: center;
}

.section-lead {
  text-align: center;
  margin: 0 auto 40px;
  max-width: 36em;
}

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

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 12px 0 6px;
  font-size: 18px;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

.card .icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
}

/* Steps */
.steps {
  list-style: none;
  padding: 0;
  margin: 40px 0 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  counter-reset: step;
}

.steps li {
  text-align: center;
  padding: 0 12px;
}

.step-num {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
}

.steps h3 {
  margin: 12px 0 4px;
}

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

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

.download {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.download h3 {
  margin: 0;
  font-size: 22px;
}

.download.recommended {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft), var(--shadow);
}

.download pre {
  margin: 0;
  padding: 10px 12px;
  background: var(--code-bg);
  border-radius: 8px;
  overflow-x: auto;
}

.download pre code {
  padding: 0;
  background: none;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.download .note {
  font-size: 14px;
}

/* FAQ */
.faq {
  max-width: 760px;
}

.faq h2 {
  margin-bottom: 32px;
}

details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  margin-bottom: 12px;
}

summary {
  cursor: pointer;
  font-weight: 600;
}

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

.footer {
  border-top: 1px solid var(--border);
  padding: 32px 0 48px;
  text-align: center;
}

.footer p {
  margin: 4px 0;
}

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding-top: 16px;
  }

  .lead {
    margin-inline: auto;
  }

  .cta {
    justify-content: center;
  }

  .grid,
  .downloads,
  .steps {
    grid-template-columns: 1fr;
  }

  .nav nav a:not(.github) {
    display: none;
  }
}