:root {
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --line: #e2e8f0;
  --brand: #15803d;
  --brand-soft: #dcfce7;
  --accent: #0ea5e9;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: linear-gradient(180deg, #f8fafc 0%, #ffffff 50%, #f8fafc 100%);
  color: var(--text);
  line-height: 1.65;
}

a {
  color: var(--brand);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.2px;
  font-size: 1.15rem;
}

.nav-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero {
  padding: 3.4rem 0 2rem;
}

.hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.7rem, 3.5vw, 2.6rem);
  line-height: 1.2;
}

.hero p {
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.12rem);
}

.badges {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.badge {
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  background: var(--brand-soft);
  color: #166534;
  font-size: 0.85rem;
  font-weight: 600;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
  box-shadow: 0 10px 26px -22px rgba(2, 6, 23, 0.4);
}

.card h2,
.card h3 {
  margin: 0 0 0.5rem;
  line-height: 1.3;
  font-size: 1.1rem;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.section {
  margin: 2rem 0;
}

.section h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.25rem, 2.6vw, 1.65rem);
}

.section ul,
.section ol {
  margin: 0.3rem 0 0;
  padding-left: 1.2rem;
}

.section li {
  margin: 0.35rem 0;
}

.quick-answer {
  border-left: 4px solid var(--accent);
  background: #f0f9ff;
  padding: 0.95rem 1rem;
  border-radius: 8px;
  color: #0c4a6e;
}

.cta {
  display: inline-block;
  margin-top: 1rem;
  background: var(--brand);
  color: #fff;
  padding: 0.72rem 1rem;
  border-radius: 10px;
  font-weight: 700;
}

.cta:hover {
  text-decoration: none;
  background: #166534;
}

.small {
  color: #64748b;
  font-size: 0.9rem;
}

footer {
  border-top: 1px solid var(--line);
  margin-top: 3rem;
  padding: 1.6rem 0;
  color: #64748b;
  font-size: 0.9rem;
}

@media (max-width: 640px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }
}