:root{
  --bg: #0f1115;
  --panel: #151821;
  --muted: #8a93a6;
  --text: #e6e9f2;
  --primary: #4f7cff;
  --primary-700: #3d63cc;
  --accent: #22c55e;
  --danger: #ef4444;
  --border: #232836;
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
  --radius: 10px;
  --maxw: 1000px;
  --gap: 18px;
  --font: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  background: radial-gradient(1200px 800px at 15% -10%, #1a1f2b 0%, var(--bg) 45%), var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(15,17,21,0.7);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

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

.logo {
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.3px;
}

.nav a {
  color: var(--text);
  margin-left: 16px;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid transparent;
}
.nav a:hover {
  background: rgba(255,255,255,0.04);
  border-color: var(--border);
  text-decoration: none;
}

.hero {
  padding: 64px 0 28px;
}
.hero h1 {
  font-size: 40px;
  line-height: 1.1;
  margin: 0 0 14px;
}
.lead {
  font-size: 18px;
  color: var(--muted);
  max-width: 760px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.btn {
  display: inline-block;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #141822;
  color: var(--text);
  text-decoration: none;
  transition: 0.15s ease;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.btn:hover {
  transform: translateY(-1px);
  text-decoration: none;
  border-color: #2a3142;
}
.btn.primary {
  background: linear-gradient(180deg, var(--primary) 0%, var(--primary-700) 100%);
  border-color: transparent;
  color: white;
}
.btn.primary:hover { filter: brightness(1.05); }
.btn.outline {
  background: transparent;
  border-color: #2a3142;
}

.highlight, .panel {
  margin: 20px 0 24px;
  background: linear-gradient(180deg, #161a22 0%, #11151d 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px 20px;
}

.highlight h2, .panel h2 {
  margin: 0 0 10px;
  font-size: 22px;
}

.bullets {
  margin: 12px 0 0 18px;
  color: var(--text);
}
.bullets li {
  margin: 6px 0;
}

.roadmap {
  padding: 8px 0 36px;
}
.roadmap-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
}
.roadmap-list li {
  padding: 10px 12px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  margin-bottom: 10px;
  background: #121622;
}
.tag {
  display: inline-block;
  font-size: 12px;
  color: #9aa3b2;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  margin-right: 8px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--gap);
}
@media (min-width: 720px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
}
.card {
  background: #121622;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 8px 22px rgba(0,0,0,0.25);
}
.card h3 { margin: 0 0 6px; }
.card p { margin: 0 0 10px; color: var(--muted); }

.kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  background: #0c0f15;
  border: 1px solid var(--border);
  padding: 3px 7px;
  border-radius: 6px;
  font-size: 13px;
}

.code-block {
  margin: 12px 0;
  background: #0c0f15;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: auto;
}
.code-block pre {
  margin: 0;
  padding: 12px;
  color: #d8dee9;
}

.table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}
.table th, .table td {
  border: 1px solid var(--border);
  padding: 10px;
  text-align: left;
  vertical-align: top;
}
.table th {
  background: #121622;
}

.notice {
  border-left: 4px solid var(--accent);
  background: #0c1410;
  padding: 10px 12px;
  border-radius: 8px;
  color: #c9f2d8;
  margin-top: 10px;
}

.site-footer {
  border-top: 1px solid var(--border);
  background: #0f1115;
  padding: 18px 0 30px;
  margin-top: 24px;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  gap: 10px;
}
.footer-nav a {
  margin-left: 12px;
  color: var(--muted);
}
.footer-nav a:hover { color: var(--text); text-decoration: none; }