:root {
  --bg: #0b0f14;
  --surface: #121a24;
  --surface-2: #182230;
  --border: rgba(255, 255, 255, 0.08);
  --text: #f8fafc;
  --muted: #94a3b8;
  --accent: #ff9500;
  --accent-2: #ff6a00;
  --radius: 20px;
  --max: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 15, 20, 0.82);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 19px;
}

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

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.nav {
  display: flex;
  gap: 22px;
  font-size: 15px;
}

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

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

/* Hero */
.hero {
  position: relative;
  padding: 88px 0 72px;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -40% -20% auto;
  height: 520px;
  background: radial-gradient(closest-side, rgba(255, 149, 0, 0.28), transparent);
  pointer-events: none;
}

.hero > * {
  position: relative;
}

.hero-icon {
  width: 96px;
  height: 96px;
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(255, 106, 0, 0.35);
}

.hero h1 {
  margin: 28px auto 16px;
  max-width: 760px;
  font-size: clamp(36px, 6vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.hero h1 span {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  margin: 0 auto;
  max-width: 620px;
  color: var(--muted);
  font-size: 19px;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 32px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  font-weight: 600;
  font-size: 15px;
}

.badge small {
  color: var(--muted);
  font-weight: 500;
}

/* Features */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  padding: 24px 0 80px;
}

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

.feature .emoji {
  font-size: 28px;
}

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

.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.pro {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 7px;
  border-radius: 6px;
  background: var(--accent);
  color: #1a1200;
  font-size: 11px;
  font-weight: 800;
  vertical-align: middle;
}

/* Document pages */
.doc {
  max-width: 760px;
  padding: 56px 20px 88px;
}

.doc h1 {
  margin: 0 0 6px;
  font-size: clamp(30px, 5vw, 42px);
  letter-spacing: -0.01em;
}

.doc .updated {
  margin: 0 0 36px;
  color: var(--muted);
  font-size: 15px;
}

.doc h2 {
  margin: 34px 0 8px;
  font-size: 20px;
}

.doc p,
.doc li {
  color: #cbd5e1;
}

.doc ol {
  padding-left: 22px;
}

.doc li {
  margin: 6px 0;
}

.card {
  margin: 28px 0;
  padding: 22px 24px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
}

.card p {
  margin: 0;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0 44px;
  color: var(--muted);
  font-size: 14px;
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  justify-content: space-between;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

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

@media (max-width: 560px) {
  .nav {
    gap: 14px;
    font-size: 14px;
  }

  .nav .optional {
    display: none;
  }

  .hero {
    padding: 64px 0 56px;
  }
}