:root {
  color-scheme: light;
  --bg: #f8fafc;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --border: #e2e8f0;
  --shadow: 0 12px 30px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 8vw;
  background: #fff;
  border-bottom: 1px solid var(--border);
  gap: 16px;
  flex-wrap: wrap;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
}

.nav {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}

.nav a.active,
.nav a:hover {
  color: var(--accent);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 32px;
  padding: 64px 8vw 48px;
  align-items: start;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
}

h1 {
  font-size: clamp(2.2rem, 2.6vw, 3rem);
  margin: 0.6rem 0 1rem;
}

h2 {
  margin-top: 0;
}

.subhead {
  color: var(--muted);
  font-size: 1.05rem;
}

.cta-row {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.button {
  border: none;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
  cursor: pointer;
}

.button.primary {
  background: var(--accent);
  color: #fff;
}

.button.primary:hover {
  background: var(--accent-dark);
}

.button.ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.hero-card {
  background: var(--panel);
  border-radius: 24px;
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.data-row {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.data-row:last-of-type {
  border-bottom: none;
}

.warning {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  color: #9a3412;
  padding: 12px 14px;
  border-radius: 12px;
  margin-top: 16px;
  font-size: 0.9rem;
}

main {
  padding: 0 8vw 64px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.panel {
  background: var(--panel);
  padding: 24px;
  border-radius: 20px;
  border: 1px solid var(--border);
  box-shadow: 0 8px 20px rgba(148, 163, 184, 0.15);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.status-pill {
  background: #e0f2fe;
  color: #075985;
  padding: 8px 14px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.85rem;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 14px;
}

input,
select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  margin-top: 6px;
  font-size: 0.95rem;
  background: #fff;
}

.inline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  gap: 12px;
  flex-wrap: wrap;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
}

.link {
  background: none;
  border: none;
  color: var(--accent);
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  font-size: 0.9rem;
}

.tab-row {
  display: flex;
  gap: 12px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.tab {
  background: #eef2ff;
  border: none;
  padding: 8px 16px;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  color: #3730a3;
}

.tab.active {
  background: var(--accent);
  color: #fff;
}

.tab-panels {
  display: grid;
  gap: 16px;
}

.callout {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-size: 0.9rem;
  display: none;
}

.callout.visible {
  display: block;
}

.callout[data-type="success"] {
  background: #ecfdf3;
  border-color: #a7f3d0;
  color: #065f46;
}

.callout[data-type="error"] {
  background: #fef2f2;
  border-color: #fecaca;
  color: #b91c1c;
}

.callout[data-type="info"] {
  background: #eff6ff;
  border-color: #bfdbfe;
  color: #1e3a8a;
}

.info-callout {
  margin-top: 16px;
  background: #f0f9ff;
  border-color: #bae6fd;
  color: #0c4a6e;
}

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

.checklist {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.checklist li {
  margin-bottom: 12px;
}

.bullet {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

footer {
  padding: 32px 8vw;
  text-align: center;
  color: var(--muted);
}

code {
  background: #eef2ff;
  padding: 2px 6px;
  border-radius: 6px;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }
}