:root {
  --primary: #1e40af;
  --primary-dark: #1e3a8a;
  --accent: #0f766e;
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --radius: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,0.95);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}
.topbar-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
.brand {
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
}
.brand span { color: var(--primary); }
.topbar-nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.topbar-nav a {
  text-decoration: none;
  color: var(--muted);
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 0.9rem;
}
.topbar-nav a.active {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary);
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 32px 24px 56px;
}
.hero {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 34px;
  margin-bottom: 24px;
}
.hero h1 { font-size: clamp(1.8rem, 3vw, 2.5rem); margin-bottom: 10px; }
.hero p { color: var(--muted); max-width: 760px; }

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.card h3 { margin-bottom: 8px; font-size: 1.05rem; }
.card p { color: var(--muted); font-size: 0.95rem; }

.actions {
  margin-top: 14px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.btn {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 10px;
  padding: 9px 14px;
  font-size: 0.9rem;
  color: var(--text);
}
.btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.btn.accent {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.placeholder {
  border: 1px dashed #cbd5e1;
  background: #f8fafc;
  border-radius: 10px;
  padding: 12px;
  margin-top: 10px;
  color: #475569;
  font-size: 0.88rem;
}

.col-12 { grid-column: span 12; }
.col-8 { grid-column: span 8; }
.col-6 { grid-column: span 6; }
.col-4 { grid-column: span 4; }
.col-3 { grid-column: span 3; }

@media (max-width: 900px) {
  .col-8, .col-6, .col-4, .col-3 { grid-column: span 12; }
}