:root {
  --font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --bg-color: #f8fafc;
  --text-color: #0f172a;
  --text-muted: #64748b;
  --accent-color: #2563eb; /* Professional blue instead of hot pink */
  --card-bg: rgba(255, 255, 255, 0.8);
  --card-border: rgba(148, 163, 184, 0.2);
  --card-hover-bg: rgba(255, 255, 255, 1);
  --card-hover-border: rgba(148, 163, 184, 0.4);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
}

html, body, h1, h2, h3, h4, p, hr {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-color);
}

.container {
  max-width: 1200px;
  width: 100%;
  padding: 3rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 3rem;
  align-items: center;
}

header {
  text-align: center;
  max-width: 800px;
}

h1 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--text-color);
  letter-spacing: -0.025em;
}

p.subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
  width: 100%;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 2rem;
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  backdrop-filter: blur(16px);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.card:hover {
  transform: translateY(-3px);
  background: var(--card-hover-bg);
  border-color: var(--card-hover-border);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.card h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-color);
}

.card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.card-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.5rem;
  background: rgba(148, 163, 184, 0.1);
  border-radius: 6px;
  color: var(--text-muted);
  border: 1px solid rgba(148, 163, 184, 0.1);
}

.card:hover .tag {
  background: rgba(148, 163, 184, 0.15);
  color: var(--text-color);
}

.arrow {
  margin-left: auto;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(148, 163, 184, 0.1);
  color: var(--text-color);
  transition: var(--transition);
}

.card:hover .arrow {
  background: var(--accent-color);
  color: white;
  transform: translateX(3px);
}

@media (max-width: 768px) {
  h1 {
    font-size: 2.25rem;
  }
  .grid {
    grid-template-columns: 1fr;
  }
}