:root {
  --bg: #fbfbfd;
  --fg: #1d1d1f;
  --muted: #86868b;
  --accent: #0071e3;
  --card-bg: #ffffff;
  --border: rgba(0, 0, 0, 0.05);
  --shadow: rgba(0, 0, 0, 0.04);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --fg: #f5f5f7;
    --muted: #86868b;
    --accent: #2997ff;
    --card-bg: #1c1c1e;
    --border: rgba(255, 255, 255, 0.05);
    --shadow: rgba(0, 0, 0, 0.2);
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 48px;
  background: rgba(251, 251, 253, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (prefers-color-scheme: dark) {
  .navbar {
    background: rgba(0, 0, 0, 0.8);
  }
}

.nav-content {
  width: 100%;
  max-width: 980px;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo {
  height: 20px;
  width: auto;
}

.nav-brand {
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.5px;
}

main {
  max-width: 980px;
  margin: 0 auto;
  padding: 80px 20px 40px;
}

.hero {
  text-align: center;
  padding: 80px 0 60px;
}

.hero-logo {
  width: 120px;
  height: 120px;
  margin-bottom: 24px;
  border-radius: 28px;
  box-shadow: 0 10px 30px var(--shadow);
}

.hero-title {
  font-size: clamp(3rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.015em;
  margin-bottom: 20px;
}

.hero-tagline {
  font-size: clamp(1.2rem, 3vw, 1.5rem);
  color: var(--muted);
  font-weight: 400;
  max-width: 600px;
  margin: 0 auto;
  letter-spacing: 0.008em;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 60px;
}

.feature-card {
  background: var(--card-bg);
  border-radius: 24px;
  padding: 32px;
  box-shadow: 0 4px 24px var(--shadow);
  border: 1px solid var(--border);
  transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.feature-card:hover {
  transform: translateY(-4px);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.feature-card p {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.6;
}

.status-section {
  margin: 80px 0;
}

.status-card {
  background: var(--card-bg);
  border-radius: 24px;
  padding: 48px;
  text-align: center;
  box-shadow: 0 4px 24px var(--shadow);
  border: 1px solid var(--border);
}

.status-card h2 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: -0.015em;
}

.status-card p {
  color: var(--muted);
  font-size: 1.1rem;
  margin-bottom: 32px;
}

.button {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 12px 24px;
  border-radius: 980px;
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  transition: opacity 0.2s;
}

.button:hover {
  opacity: 0.9;
}

footer {
  border-top: 1px solid var(--border);
  padding-top: 32px;
  margin-top: 60px;
  font-size: 0.85rem;
  color: var(--muted);
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.footer-links a {
  color: var(--fg);
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
}

.privacy-note {
  font-size: 0.8rem;
  margin-top: 8px;
}

@media (max-width: 768px) {
  main {
    padding-top: 60px;
  }
  .hero {
    padding: 60px 0 40px;
  }
  .status-card {
    padding: 32px 20px;
  }
}

/* Page Content (Prose) */
.page-header {
  padding: 40px 0 20px;
  text-align: center;
}

.page-header h1 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.015em;
}

.page-header .muted {
  color: var(--muted);
  font-size: 0.95rem;
}

.prose {
  max-width: 680px;
  margin: 0 auto;
}

.prose h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 48px 0 16px;
  letter-spacing: -0.01em;
}

.prose p {
  color: var(--fg);
  font-size: 1.05rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

.prose ul {
  margin-bottom: 24px;
  padding-left: 24px;
}

.prose li {
  font-size: 1.05rem;
  line-height: 1.6;
  margin-bottom: 8px;
  color: var(--fg);
}

.prose strong {
  font-weight: 600;
}

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

.prose a:hover {
  text-decoration: underline;
}

.prose code {
  background: var(--border);
  padding: 2px 6px;
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.9em;
}