:root {
  --bg: #f1f5f9;
  --card: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --muted: #64748b;
  --accent: #2563eb;
  --accent-strong: #1d4ed8;
  --radius: 16px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
}

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 600;
}

p {
  margin: 0;
}

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

a:hover {
  text-decoration: underline;
}

.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px 64px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.header {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.06);
}

.header-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #a855f7);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.header p {
  color: var(--muted);
  font-size: 0.95rem;
}

.layout {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
}

.column {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.05);
}

.card h2 {
  font-size: 1.1rem;
}

.card h3 {
  font-size: 1rem;
}

.muted {
  color: var(--muted);
  font-size: 0.92rem;
}

.tier-grid {
  display: grid;
  gap: 14px;
}

.tier-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  display: grid;
  gap: 10px;
  background: #f8fafc;
  transition: border 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
}

.tier-card.active {
  border-color: var(--accent);
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.14);
  background: #eef2ff;
}

.tier-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.tier-price {
  font-size: 1.2rem;
  font-weight: 700;
  color: #334155;
}

.tier-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--muted);
}

.tier-meta span strong {
  color: var(--text);
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.9rem;
}

.boi-section {
  display: grid;
  gap: 8px;
}

.boi-section h3 {
  font-size: 0.95rem;
}

.boi-sub {
  border-top: 1px solid var(--border);
  padding-top: 12px;
  display: grid;
  gap: 8px;
}

.boi-sub h4 {
  margin: 0;
  font-size: 0.9rem;
}

.entity-note {
  font-size: 0.9rem;
  color: var(--muted);
}

.alert {
  border-radius: 10px;
  padding: 12px;
  font-size: 0.9rem;
}

.alert-info {
  background: #eff6ff;
  border: 1px solid #dbeafe;
  color: #1d4ed8;
}

.entity-description p {
  font-size: 0.95rem;
}

.split-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.bullet-list,
.resource-list,
.comparison-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
  font-size: 0.92rem;
}

.bullet-list li::before {
  content: "•";
  color: var(--accent);
  margin-right: 6px;
}

.bullet-list li {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.resource-list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.resource-list small {
  color: var(--muted);
  font-size: 0.8rem;
}

.resource-block {
  border-top: 1px solid var(--border);
  padding-top: 12px;
  display: grid;
  gap: 8px;
}

.compliance-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.label {
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.kpi {
  font-size: 1.2rem;
  font-weight: 600;
}

.quote {
  background: #f8fafc;
  border-radius: 12px;
  padding: 12px 14px;
  display: flex;
  gap: 16px;
}

.amount {
  font-size: 1.5rem;
  font-weight: 700;
}

.sub-label {
  font-size: 0.85rem;
  color: var(--muted);
}

.line-item-grid {
  display: grid;
  gap: 8px;
  font-size: 0.9rem;
}

.line-item {
  display: flex;
  justify-content: space-between;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 8px 12px;
}

.comparison-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  background: #f8fafc;
}

.comparison-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 0.88rem;
}

.comparison-info span:last-child {
  color: var(--muted);
  font-size: 0.8rem;
}

.comparison-detail {
  display: flex;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--muted);
}

.comparison-list button {
  border: none;
  background: transparent;
  color: var(--accent);
  font-weight: 600;
  cursor: pointer;
}

.comparison-list button:disabled {
  color: var(--muted);
  cursor: default;
}

@media (max-width: 1080px) {
  .layout {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .split-grid,
  .compliance-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .tier-card {
    gap: 8px;
  }

  .comparison-list li {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}