:root {
  --ink: #111214;
  --muted: #6b7280;
  --line: #e9eaec;
  --bg: #ffffff;
  --accent: #16a34a;
  --panel: #f6f7f8;
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

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

/* Topbar */
.topbar {
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0.5px;
}
.logo .dot { color: var(--accent); }
.main-nav {
  display: flex;
  gap: 28px;
  flex: 1;
  justify-content: center;
}
.main-nav a {
  font-size: 14px;
  color: var(--ink);
}
.main-nav a:hover { color: var(--accent); }

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .15s ease;
}
.btn-outline {
  border-color: var(--ink);
}
.btn-outline:hover { background: var(--ink); color: #fff; }
.btn-primary {
  background: var(--ink);
  color: #fff;
}
.btn-primary:hover { background: #000; }
.btn-ghost {
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--ink); }
.btn-lg { padding: 16px 36px; font-size: 16px; }

/* Hero */
.hero { padding: 80px 0 60px; }
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.hero-text h1 {
  font-size: 48px;
  line-height: 1.1;
  margin: 0 0 20px;
  font-weight: 800;
}
.hero-sub {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
  max-width: 460px;
  margin: 0 0 28px;
}
.hero-stat {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 28px;
}
.stat-number {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
}
.stat-label { color: var(--muted); font-size: 14px; }
.hero-actions { display: flex; gap: 14px; margin-bottom: 16px; }
.hero-note { color: var(--muted); font-size: 13px; }

.hero-art {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 16px;
  height: 420px;
}
.art-tile {
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
}
.art-tile--moon {
  background: linear-gradient(160deg, #0b1030 0%, #1c2a5e 55%, #2b3f8f 100%);
}
.moon {
  position: absolute;
  top: 22px; right: 22px;
  width: 64px; height: 64px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #fff9e6, #f1e2a0 60%, #d9c877 100%);
  box-shadow: 0 0 40px rgba(255, 245, 200, 0.5);
}
.art-tile--chart {
  background: #0f1115;
  display: flex;
  align-items: flex-end;
  padding: 20px;
}
.chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  width: 100%;
  height: 100%;
}
.chart-bars span {
  flex: 1;
  height: var(--h);
  border-radius: 4px;
  background: linear-gradient(180deg, #22c55e, #16a34a);
}
.art-tile--flow {
  grid-row: 1 / 3;
  background:
    radial-gradient(circle at 30% 20%, #ff2ea8 0%, transparent 45%),
    radial-gradient(circle at 70% 60%, #7b2ff7 0%, transparent 50%),
    radial-gradient(circle at 40% 80%, #2ee6ff 0%, transparent 45%),
    #150a2e;
}

/* Features */
.features { padding: 70px 0; background: var(--panel); }
.features h2 {
  text-align: center;
  font-size: 30px;
  margin: 0 0 40px;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
}
.feature-card h3 { margin: 0 0 10px; font-size: 18px; }
.feature-card p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.6; }

/* Download */
.download { padding: 90px 0; text-align: center; }
.download h2 { font-size: 32px; margin: 0 0 12px; }
.download p { color: var(--muted); margin: 0 0 28px; }
.download-meta { margin-top: 16px; font-size: 13px; color: var(--muted); }

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 24px 0;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

/* Responsive */
@media (max-width: 900px) {
  .main-nav { display: none; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-art { height: 280px; }
  .hero-text h1 { font-size: 34px; }
  .feature-grid { grid-template-columns: 1fr; }
}