:root {
  --df-bg: #0b1220;
  --df-surface: #131a2a;
  --df-surface-2: #1a2236;
  --df-border: #232c46;
  --df-text: #e9ecf5;
  --df-text-dim: #9aa3bd;
  --df-accent: #ff5b1f;
  --df-accent-2: #ffb020;
  --df-success: #27c08a;
  --df-danger: #ef4444;
  --df-radius: 10px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  background: var(--df-bg);
  color: var(--df-text);
  line-height: 1.5;
}

a { color: var(--df-accent-2); text-decoration: none; }
a:hover { color: var(--df-accent); }

.df-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 12px 24px;
  background: var(--df-surface);
  border-bottom: 1px solid var(--df-border);
}
.df-brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--df-text);
  letter-spacing: 0.3px;
}
.df-brand:hover { color: var(--df-accent); }
.df-nav-links { display: flex; gap: 16px; flex: 1; }
.df-nav-links a { color: var(--df-text-dim); font-size: 14px; }
.df-nav-links a:hover { color: var(--df-text); }
.df-nav-user { display: flex; gap: 12px; align-items: center; font-size: 14px; color: var(--df-text-dim); }

.df-main { padding: 32px 24px; max-width: 1280px; margin: 0 auto; }

.df-footer { padding: 24px; text-align: center; color: var(--df-text-dim); border-top: 1px solid var(--df-border); margin-top: 64px; }

.df-hero {
  padding: 80px 24px 48px;
  text-align: center;
  background: radial-gradient(circle at 30% 0%, rgba(255, 91, 31, 0.18), transparent 60%),
              radial-gradient(circle at 70% 100%, rgba(255, 176, 32, 0.12), transparent 60%);
}
.df-hero h1 { font-size: 48px; margin: 0 0 12px; letter-spacing: -0.5px; }
.df-hero p  { font-size: 18px; color: var(--df-text-dim); max-width: 640px; margin: 0 auto; }

.df-tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 32px;
}
.df-tile {
  display: block;
  padding: 24px;
  background: var(--df-surface);
  border: 1px solid var(--df-border);
  border-radius: var(--df-radius);
  color: var(--df-text);
  transition: transform 120ms ease, border-color 120ms ease;
}
.df-tile:hover {
  transform: translateY(-2px);
  border-color: var(--df-accent);
  color: var(--df-text);
}
.df-tile h3 { margin: 0 0 8px; font-size: 18px; }
.df-tile p  { margin: 0; color: var(--df-text-dim); font-size: 14px; }

.df-btn {
  display: inline-block;
  padding: 10px 18px;
  background: var(--df-accent);
  color: #fff;
  border-radius: var(--df-radius);
  border: 0;
  font-weight: 600;
  cursor: pointer;
}
.df-btn:hover { background: var(--df-accent-2); color: #1a1a1a; }

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