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

:root {
  color-scheme: light dark;
  --bg: #f5f5f7;
  --surface: #ffffff;
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --accent: #0071e3;
  --border: #d2d2d7;
  --max-width: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --surface: #1c1c1e;
    --text: #f5f5f7;
    --text-secondary: #a1a1a6;
    --accent: #2997ff;
    --border: #38383a;
  }
}

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

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

a:hover {
  text-decoration: underline;
}

header {
  padding: 2.5rem 1.5rem 1.5rem;
  text-align: center;
}

header .logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}

header .logo:hover {
  text-decoration: none;
}

header .logo-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.625rem;
  background: linear-gradient(145deg, #0071e3, #005bb5);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.25rem;
  font-weight: 700;
  flex-shrink: 0;
}

header p.tagline {
  margin: 0.75rem 0 0;
  color: var(--text-secondary);
  font-size: 1rem;
}

nav.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1.25rem;
  padding: 0 1.5rem 1.5rem;
}

nav.site-nav a {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

nav.site-nav a[aria-current="page"] {
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 2rem;
  margin-bottom: 1.5rem;
}

.hero {
  text-align: center;
  padding: 2.5rem 2rem;
}

.hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.75rem, 5vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.hero p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 1.125rem;
  max-width: 32rem;
  margin-inline: auto;
}

h1.page-title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.meta {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin: 0 0 2rem;
}

h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

h2:first-child {
  margin-top: 0;
}

p,
ul,
ol {
  margin: 0 0 1rem;
}

ul,
ol {
  padding-left: 1.25rem;
}

li {
  margin-bottom: 0.5rem;
}

li:last-child {
  margin-bottom: 0;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.feature-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
}

.feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 600;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.25rem;
  border-radius: 0.75rem;
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition: opacity 0.15s ease;
}

.btn:hover {
  text-decoration: none;
  opacity: 0.85;
}

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

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

.faq-item {
  border-top: 1px solid var(--border);
  padding: 1.25rem 0;
}

.faq-item:first-of-type {
  border-top: none;
  padding-top: 0;
}

.faq-item h3 {
  margin: 0 0 0.5rem;
  font-size: 1.0625rem;
  font-weight: 600;
}

.faq-item p {
  margin: 0;
  color: var(--text-secondary);
}

.contact-block {
  background: var(--bg);
  border-radius: 0.75rem;
  padding: 1.25rem;
  margin: 1rem 0;
}

footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.875rem;
  border-top: 1px solid var(--border);
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1.25rem;
  margin-bottom: 0.75rem;
}

footer nav a {
  color: var(--text-secondary);
}

@media (max-width: 480px) {
  .card {
    padding: 1.5rem;
  }

  header {
    padding-top: 2rem;
  }
}