:root {
  --primary: #000000;
  --primary-hover: #333333;
  --bg-body: #ffffff;
  --bg-secondary: #f9fafb;
  --text-main: #111827;
  --text-muted: #6b7280;
  --text-label: #9ca3af;
  --border-color: #e5e7eb;
  --card-bg: #ffffff;
  --card-hover: #f3f4f6;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --accent-green-bg: #dcfce7;
  --accent-green-text: #166534;
  --accent-yellow-bg: #fffbeb;
  --accent-yellow-text: #b45309;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 800px;
  /* Reduced width to match the focused "app" feel */
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

/* Header */
header {
  padding: 1.5rem 0;
  background: var(--bg-body);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

/* Hero Section */
.hero {
  padding: 5rem 0 4rem;
  text-align: center;
}

h1 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 1rem;
  color: var(--text-main);
}

.hero p {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 500px;
  margin: 0 auto 2.5rem;
  line-height: 1.6;
}

/* The Black Button */
.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--primary);
  color: white;
  padding: 0.875rem 2rem;
  border-radius: 0.75rem;
  /* Slightly boxier rounded corners */
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-md);
}

.cta-button:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}

/* Section Styling */
.section-label {
  text-transform: uppercase;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-label);
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
  text-align: center;
}

.features,
.platforms {
  padding: 4rem 0;
  border-bottom: 1px solid var(--border-color);
}

/* Cards (Export Formats Style) */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  /* Smaller cards */
  gap: 1rem;
  margin-top: 1rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  border-radius: 1rem;
  text-align: center;
  transition: all 0.2s ease;
  cursor: default;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.card:hover {
  border-color: #d1d5db;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.card p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Platforms Grid (Icon style) */
.platform-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  max-width: 600px;
  margin: 0 auto;
}

.platform-item {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  /* Squircle */
  background: white;
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: transform 0.2s;
}

.platform-item:hover {
  transform: scale(1.05);
  border-color: #d1d5db;
}

/* Warning Banner Style */
.banner-warning {
  background-color: var(--accent-yellow-bg);
  color: var(--accent-yellow-text);
  padding: 0.75rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  text-align: center;
  border: 1px solid #fcd34d;
  max-width: 600px;
  margin: 2rem auto 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

/* Privacy Page Specifics */
.privacy-content {
  padding: 4rem 0;
  max-width: 680px;
  margin: 0 auto;
}

.privacy-content h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.privacy-content h2 {
  font-size: 1.5rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--text-main);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.privacy-content h3 {
  font-size: 1.125rem;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-main);
}

.privacy-content p,
.privacy-content li {
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1rem;
}

/* Footer */
footer {
  padding: 3rem 0;
  text-align: center;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.footer-links a {
  margin: 0 1rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
}

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

.copyright {
  margin-top: 1.5rem;
  color: var(--text-label);
  font-size: 0.875rem;
}