/* === Design System === */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #0F172A;
  --bg-card: #1E293B;
  --text: #E2E8F0;
  --text-muted: #94A3B8;
  --accent: #38BDF8;
  --accent-hover: #7DD3FC;
  --border: #334155;
  --max-width: 720px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* === Layout === */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

main {
  flex: 1;
}

/* === Nav === */
nav {
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
}

nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

nav .brand {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--text);
}

nav .nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

nav .nav-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

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

/* === Hero === */
.hero {
  text-align: center;
  padding: 4rem 0 3rem;
}

.hero h1 {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.hero p {
  color: var(--text-muted);
  font-size: 1.125rem;
  max-width: 480px;
  margin: 0 auto;
}

/* === Sections === */
section {
  padding: 2.5rem 0;
}

section + section {
  border-top: 1px solid var(--border);
}

h2 {
  font-size: 1.375rem;
  font-weight: 600;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

/* === Card === */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.5rem;
}

.card-row {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.app-icon {
  width: 80px;
  height: 80px;
  border-radius: 18px;
  flex-shrink: 0;
}

@media (max-width: 480px) {
  .card-row {
    flex-direction: column;
  }
}

.card h3 {
  color: var(--accent);
}

.card p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.card p:last-child {
  margin-bottom: 0;
}

/* === Company Info === */
.info-grid {
  display: grid;
  gap: 0.25rem;
  color: var(--text-muted);
}

.info-grid strong {
  color: var(--text);
}

/* === FAQ === */
.faq-item {
  margin-bottom: 1.5rem;
}

.faq-item h3 {
  color: var(--text);
}

.faq-item p {
  color: var(--text-muted);
}

/* === Footer === */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

footer .footer-links {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 0.75rem;
}

footer .footer-links a {
  color: var(--text-muted);
  font-size: 0.85rem;
}

footer .footer-links a:hover {
  color: var(--accent);
}

/* === Responsive === */
@media (max-width: 480px) {
  .hero {
    padding: 2.5rem 0 2rem;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .hero p {
    font-size: 1rem;
  }

  section {
    padding: 2rem 0;
  }

  h2 {
    font-size: 1.25rem;
  }
}