:root {
  --bg: #f7f8fb;
  --surface: #ffffff;
  --surface-soft: #f0f4ff;
  --text: #0f172a;
  --text-muted: #475569;
  --border: #e2e8f0;
  --accent: #2563eb;
  --accent-strong: #1e3a8a;
  --success: #0f9d58;
  --warn: #ea580c;
  --danger: #dc2626;
  --shadow: 0 10px 40px rgba(15, 23, 42, 0.08);
  --radius: 14px;
  color-scheme: light;
}

:root.dark {
  --bg: #0f172a;
  --surface: #111827;
  --surface-soft: #1f2937;
  --text: #e2e8f0;
  --text-muted: #cbd5e1;
  --border: #1f2937;
  --accent: #60a5fa;
  --accent-strong: #2563eb;
  --success: #34d399;
  --warn: #fb923c;
  --danger: #f87171;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
  color-scheme: dark;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.top-bar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px;
  border-bottom: 1px solid var(--border);
  background: rgba(247, 248, 251, 0.92);
  backdrop-filter: blur(12px);
}

:root.dark .top-bar {
  background: rgba(17, 24, 39, 0.92);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.wordmark {
  font-size: 1.05rem;
}

.main-nav {
  display: flex;
  gap: 18px;
  font-weight: 500;
}

.main-nav a {
  padding: 8px 10px;
  border-radius: 10px;
  transition: background 0.2s ease, color 0.2s ease;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  background: var(--surface-soft);
  color: var(--accent-strong);
}

.controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.control {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 10px;
  padding: 8px 10px;
  font-weight: 600;
  cursor: pointer;
  transition: border 0.2s ease, transform 0.15s ease;
}

.control:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.control:active {
  transform: translateY(1px);
}

.cta,
.cta-secondary,
.cta-ghost,
.ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 12px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.cta {
  background: linear-gradient(120deg, var(--accent-strong), var(--accent));
  color: #fff;
  box-shadow: var(--shadow);
}

.cta:hover {
  transform: translateY(-1px);
}

.cta-secondary {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  color: var(--text);
}

.cta-ghost,
.ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.ghost {
  padding: 10px 14px;
  font-weight: 600;
}

.hero {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 28px;
  padding: 64px 28px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-text h1 {
  font-size: clamp(2rem, 3.2vw, 2.8rem);
  line-height: 1.1;
  margin: 8px 0 12px;
}

.hero-text .lede {
  font-size: 1.1rem;
  color: var(--text-muted);
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin: 18px 0;
  flex-wrap: wrap;
}

.disclaimer {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  font-size: 0.78rem;
  color: var(--accent-strong);
}

.hero-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  align-self: center;
}

.hero-card .tag {
  font-weight: 700;
  color: var(--text-muted);
  margin: 0;
}

.big-number {
  font-size: 3.2rem;
  margin: 6px 0;
}

.supporting {
  color: var(--text-muted);
  margin: 0;
}

.mini-list p {
  margin: 10px 0 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.mini-list p::before {
  content: '•';
  color: var(--accent);
}

main {
  padding: 0 28px 80px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 1200px;
  margin: 0 auto 28px;
  box-shadow: var(--shadow);
}

.panel.secondary {
  background: linear-gradient(145deg, var(--surface-soft), var(--surface));
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.grid-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-weight: 700;
}

select,
input {
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 1rem;
}

.help {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin: 0;
}

.form-actions {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-start;
  margin-top: 4px;
}

.results {
  margin-top: 28px;
}

.result-line {
  display: flex;
  align-items: center;
  gap: 12px;
}

.result-number {
  font-size: 2.6rem;
  font-weight: 800;
}

.result-message {
  margin: 10px 0 16px;
  color: var(--text-muted);
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  font-weight: 700;
}

.pill-warn {
  background: rgba(234, 88, 12, 0.12);
  color: var(--warn);
}

.pill-ok {
  background: rgba(15, 157, 88, 0.12);
  color: var(--success);
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-top: 12px;
  background: var(--surface);
}

.card.muted {
  background: var(--surface-soft);
}

.card.success {
  border-color: rgba(15, 157, 88, 0.4);
}

.application {
  display: none;
  margin-top: 18px;
}

#improvement,
#qualified {
  display: none;
}

ul {
  margin: 8px 0 0 18px;
  color: var(--text-muted);
}

.grid-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.fact {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  background: var(--surface);
}

.fact strong {
  display: inline-block;
  margin-bottom: 4px;
}

.accordion details {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.accordion details + details {
  margin-top: 10px;
}

.accordion summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

.accordion summary::-webkit-details-marker {
  display: none;
}

.policy + .policy {
  margin-top: 12px;
}

.site-footer {
  max-width: 900px;
  margin: 0 auto 48px;
  padding: 18px 28px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--text-muted);
}

.copyright {
  margin: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .top-bar {
    flex-wrap: wrap;
    gap: 12px;
  }

  .main-nav {
    width: 100%;
    justify-content: center;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .main-nav {
    display: none;
  }

  .panel,
  .hero {
    padding: 22px 18px;
  }

  .top-bar {
    padding: 12px 18px;
  }

  .controls .cta-ghost {
    display: none;
  }
}