:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --bg-hover: #e5e7eb;

  --text-primary: #111827;
  --text-secondary: #6b7280;
  --text-tertiary: #9ca3af;

  --border-color: #e5e7eb;
  --border-light: #f3f4f6;

  --accent: #10a37f;
  --accent-hover: #0d8a6a;
  --accent-light: rgba(16, 163, 127, 0.12);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', Consolas, monospace;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 12px 30px rgba(15, 23, 42, 0.08);
}

:root[data-theme="dark"] {
  --bg-primary: #0f1217;
  --bg-secondary: #141923;
  --bg-tertiary: #1b2432;
  --bg-hover: #232f43;

  --text-primary: #e5e7eb;
  --text-secondary: #9ca3af;
  --text-tertiary: #6b7280;

  --border-color: #253246;
  --border-light: #1b2432;

  --accent: #22c55e;
  --accent-hover: #16a34a;
  --accent-light: rgba(34, 197, 94, 0.16);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 16px 30px rgba(0, 0, 0, 0.4);
}

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

body {
  font-family: var(--font-sans);
  background: radial-gradient(circle at top, var(--bg-secondary), var(--bg-primary) 55%);
  color: var(--text-primary);
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

.landing-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.landing-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  border-bottom: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(10px);
}

.landing-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 18px;
}

.landing-brand img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.landing-header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.landing-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 24px 72px;
}

.hero {
  width: min(1040px, 100%);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  align-items: start;
}

.hero-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
}

.hero-eyebrow {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  font-weight: 600;
}

.hero-title {
  font-size: 32px;
  line-height: 1.2;
  margin: 16px 0 12px;
}

.hero-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.hero-actions {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.hero-divider {
  font-size: 12px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.primary-btn,
.secondary-btn,
.ghost-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  transition: all 150ms ease;
  border: 1px solid transparent;
}

.primary-btn {
  background: var(--accent);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.primary-btn:hover {
  background: var(--accent-hover);
}

.secondary-btn {
  background: var(--bg-primary);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.secondary-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.ghost-btn {
  background: transparent;
  border-color: var(--border-color);
  color: var(--text-secondary);
}

.ghost-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.feature-grid {
  display: grid;
  gap: 16px;
}

.feature-card {
  display: flex;
  gap: 16px;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.feature-card h3 {
  font-size: 16px;
  margin-bottom: 4px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.feature-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-light);
  color: var(--accent);
}

.feature-icon svg {
  width: 18px;
  height: 18px;
}

.landing-footer {
  display: flex;
  justify-content: center;
  gap: 24px;
  padding: 20px;
  font-size: 13px;
  color: var(--text-tertiary);
}

@media (max-width: 720px) {
  .landing-header {
    padding: 16px 20px;
  }

  .hero-card {
    padding: 24px;
  }

  .hero-title {
    font-size: 26px;
  }
}