:root {
  --accent: #007AFF;
  --bg-top: #F6F6F7;
  --bg-bottom: #B8CEEA;
  --text: #1C1C1E;
  --text-secondary: #6C6C70;
  --card-bg: #FFFFFF;
  --card-border: rgba(60, 60, 67, 0.12);
  --shadow: rgba(0, 0, 0, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #0A84FF;
    --bg-top: #040404;
    --bg-bottom: #111144;
    --text: #F2F2F7;
    --text-secondary: #98989D;
    --card-bg: #1C1C1E;
    --card-border: rgba(255, 255, 255, 0.08);
    --shadow: rgba(0, 0, 0, 0.35);
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0 16px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: linear-gradient(to bottom, var(--bg-top), var(--bg-top), var(--bg-bottom));
  background-attachment: fixed;
}

.hero {
  text-align: center;
  padding: 64px 0 32px;
}

.logo {
  border-radius: 22%;
  box-shadow: 0 8px 24px var(--shadow);
}

.hero h1 {
  margin: 20px 0 8px;
  font-size: 2rem;
  font-weight: 700;
}

.subtitle {
  margin: 0;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

main {
  max-width: 640px;
  margin: 0 auto;
  padding-bottom: 64px;
}

section {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  box-shadow: 0 4px 16px var(--shadow);
  padding: 28px;
  margin-bottom: 24px;
}

section h2 {
  margin-top: 0;
  font-size: 1.3rem;
}

section p {
  color: var(--text-secondary);
  line-height: 1.5;
}

.email-button {
  display: inline-block;
  margin-top: 8px;
  padding: 12px 20px;
  background: var(--accent);
  color: #FFFFFF;
  text-decoration: none;
  font-weight: 600;
  border-radius: 10px;
}

.email-button:hover {
  opacity: 0.9;
}

.faq details {
  border-top: 1px solid var(--card-border);
  padding: 14px 0;
}

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

.faq summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

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

.faq summary::before {
  content: "+";
  display: inline-block;
  width: 1.2em;
  color: var(--accent);
  font-weight: 700;
}

.faq details[open] summary::before {
  content: "\2212";
}

.faq details p {
  margin: 10px 0 0 1.2em;
}

.faq details:last-of-type {
  padding-bottom: 0;
}

footer {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.85rem;
  padding-bottom: 32px;
}

@media (max-width: 420px) {
  .hero {
    padding: 48px 0 24px;
  }

  section {
    padding: 20px;
  }
}