:root {
  --bg:      #ffffff;
  --surface: #f4f4f4;
  --accent:  #cc1a1a;
  --text:    #1a1a1a;
  --muted:   #555555;
  --border:  #dddddd;
  --radius:  8px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, sans-serif;
  line-height: 1.6;
}

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

.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }

nav {
  background: #1a1a1a;
  border-bottom: 3px solid var(--accent);
  padding: 0.75rem 0;
}
nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}
nav .brand { display: flex; align-items: center; }
nav .brand img { background: #fff; border-radius: 6px; padding: 3px 6px; }
nav ul { list-style: none; display: flex; gap: 1.5rem; }
nav ul a { color: #ffffff; font-weight: 600; }
nav ul a:hover { color: var(--accent); text-decoration: none; }

footer {
  background: #1a1a1a;
  border-top: 3px solid var(--accent);
  text-align: center;
  padding: 1.5rem;
  color: #aaaaaa;
  font-size: 0.875rem;
  margin-top: 4rem;
}

h1, h2, h3 { line-height: 1.2; color: #1a1a1a; }
h1 { font-size: 2.5rem; }
h2 { font-size: 1.75rem; margin-bottom: 1rem; }

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.5rem;
  border: 1px solid var(--border);
}
.card h3 { color: var(--accent); margin-bottom: 0.5rem; }

.tag {
  display: inline-block;
  background: #e8e8e8;
  border-radius: 4px;
  padding: 0.2rem 0.6rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: #ffffff;
  font-weight: 700;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
}
.btn:hover { opacity: 0.85; text-decoration: none; }

.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }