* { box-sizing: border-box; }
:root {
  --bg: #000;
  --panel: #0b0b0b;
  --ink: #eee;
  --muted: #bbb;
  --line: #222;
  --accent: #f90;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Segoe UI', Tahoma, sans-serif;
  line-height: 1.6;
}

/* Navigation */
header {
  background: #000;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar .brand {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 1px;
}

.navbar ul {
  display: flex;
  gap: 20px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.navbar ul li a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.navbar ul li a:hover {
  background: #111;
  color: var(--ink);
}

.navbar ul li a.active {
  background: var(--accent);
  color: #000;
}

/* Layout */
main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 40px 16px;
  background: var(--bg);
}

footer {
  border-top: 1px solid var(--line);
  color: #777;
  text-align: center;
  padding: 18px;
  background: var(--bg);
}

/* Hero section */
.hero {
  padding: 60px 20px;
  text-align: center;
  background: radial-gradient(1000px 400px at 50% -10%, #111, transparent);
  border-bottom: 1px solid var(--line);
}

.hero h1 {
  font-size: 2.4rem;
  margin: 0 0 10px;
}

.hero p {
  color: var(--muted);
  max-width: 700px;
  margin: 0 auto 20px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 600;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  text-decoration: none;
  margin: 4px;
  transition: 0.2s;
}

.btn.primary {
  background: var(--accent);
  color: #000;
  border: none;
}

.btn:hover {
  filter: brightness(1.1);
}

/* Cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  margin-top: 30px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px;
}

.card h3 {
  margin-top: 0;
}

.kicker {
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 1px;
  font-size: 0.85rem;
}