:root {
  --color-bg: #f8f9fb;
  --color-surface: #ffffff;
  --color-text: #1a1d21;
  --color-muted: #5c6570;
  --color-accent: #2563eb;
  --color-accent-dark: #1d4ed8;
  --color-border: #e2e6eb;
  --font-sans: "Segoe UI", system-ui, -apple-system, sans-serif;
  --max-width: 960px;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
}

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

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
  color: var(--color-accent);
}

.site-nav a {
  color: var(--color-muted);
  font-size: 0.95rem;
  margin-left: 1.25rem;
}

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

.hero {
  padding: 3.5rem 0 2.5rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.2;
  margin: 0 0 1rem;
}

.hero p {
  font-size: 1.1rem;
  color: var(--color-muted);
  max-width: 42rem;
  margin: 0 auto;
}

.section {
  padding: 2.5rem 0;
}

.section h2 {
  font-size: 1.5rem;
  margin: 0 0 1.25rem;
}

.section p {
  color: var(--color-muted);
  margin: 0 0 1rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.card h3 {
  font-size: 1.05rem;
  margin: 0 0 0.75rem;
  color: var(--color-text);
}

.card p {
  font-size: 0.95rem;
  margin: 0;
}

.criteria-list {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 0;
}

.criteria-list li {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
}

.criteria-list strong {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--color-text);
}

.criteria-list span {
  color: var(--color-muted);
  font-size: 0.95rem;
}

.about-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-item h3 {
  font-size: 1rem;
  margin: 0 0 0.5rem;
}

.faq-item p {
  margin: 0;
  font-size: 0.95rem;
}

.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  margin-top: 2rem;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.site-footer p {
  margin: 0.25rem 0;
}

@media (max-width: 600px) {
  .site-nav a {
    margin-left: 0.75rem;
    font-size: 0.85rem;
  }

  .hero {
    padding: 2.5rem 0 1.5rem;
  }
}