:root {
  --color-bg: #F5F6F8;
  --color-surface: #FFFFFF;
  --color-surface-alt: #F0F1F4;
  --color-border: #E4E6EB;
  --color-text: #1A1D23;
  --color-text-secondary: #6B7280;
  --color-text-muted: #9CA3AF;
  --color-accent: #2D6CDF;
  --color-accent-soft: #E8F0FE;
  --color-success: #1F9254;
  --color-success-soft: #E5F6ED;
  --color-white: #FFFFFF;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-pill: 999px;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-xxl: 32px;
  --space-xxxl: 64px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --max-width: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #14161B;
    --color-surface: #1D2027;
    --color-surface-alt: #23262E;
    --color-border: #2E323C;
    --color-text: #F2F3F5;
    --color-text-secondary: #A6ACB9;
    --color-text-muted: #767C8A;
    --color-accent: #5B8DEF;
    --color-accent-soft: #1E2A46;
    --color-success: #3FC17A;
    --color-success-soft: #17301F;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* Nav */
.nav {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-xl);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: 17px;
  color: var(--color-text);
}

.nav-brand img {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
}

.nav-brand {
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  flex-shrink: 0;
}

.nav-links a {
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.nav-links-secondary {
  display: none;
  align-items: center;
  gap: var(--space-xl);
}

@media (min-width: 640px) {
  .nav-links-secondary {
    display: flex;
  }
}

.nav-cta {
  background: var(--color-accent);
  color: var(--color-white) !important;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-pill);
  font-weight: 600;
  text-decoration: none !important;
}

/* Hero */
.hero {
  padding: var(--space-xxxl) var(--space-xl);
  text-align: center;
}

.hero-logo {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-lg);
  margin: 0 auto var(--space-lg);
}

.hero h1 {
  font-size: 40px;
  font-weight: 800;
  margin: 0 0 var(--space-md);
  letter-spacing: -0.02em;
}

.hero p.lead {
  font-size: 18px;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto var(--space-xl);
}

.button-row {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 13px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 15px;
  text-decoration: none !important;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white) !important;
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text) !important;
  border-color: var(--color-border);
}

.store-badges {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--space-xl);
}

.store-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px 18px;
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
  color: var(--color-text-muted) !important;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none !important;
  border: 1px solid var(--color-border);
}

/* Sections */
.section {
  padding: var(--space-xxxl) var(--space-xl);
}

.section-alt {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-header {
  text-align: center;
  max-width: 560px;
  margin: 0 auto var(--space-xxl);
}

.section-header h2 {
  font-size: 28px;
  font-weight: 800;
  margin: 0 0 var(--space-sm);
  letter-spacing: -0.01em;
}

.section-header p {
  color: var(--color-text-secondary);
  font-size: 16px;
  margin: 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
}

@media (min-width: 720px) {
  .feature-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.feature-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-pill);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.feature-card h3 {
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 var(--space-xs);
}

.feature-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.5;
}

/* Privacy-first strip */
.privacy-strip {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.privacy-strip .feature-icon {
  margin: 0 auto var(--space-lg);
}

.privacy-strip h2 {
  font-size: 26px;
  font-weight: 800;
  margin: 0 0 var(--space-md);
}

.privacy-strip p {
  color: var(--color-text-secondary);
  font-size: 16px;
  line-height: 1.6;
}

/* Pricing */
.pricing-card {
  max-width: 380px;
  margin: 0 auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xxl);
  text-align: center;
}

.pricing-badge {
  display: inline-block;
  background: var(--color-success-soft);
  color: var(--color-success);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-md);
}

.pricing-price {
  font-size: 40px;
  font-weight: 800;
  margin: var(--space-sm) 0 0;
}

.pricing-price span {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.pricing-note {
  color: var(--color-text-muted);
  font-size: 13px;
  margin: var(--space-xs) 0 var(--space-xl);
}

.pricing-features {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-xl);
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: 14px;
  color: var(--color-text);
}

.pricing-features li svg {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-accent);
}

/* Footer */
.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-xxl) var(--space-xl);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  align-items: center;
  justify-content: space-between;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  font-size: 13px;
}

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

.footer-copyright {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* Simple content pages (privacy / terms / support) */
.page-header {
  padding: var(--space-xxl) var(--space-xl) var(--space-xl);
  max-width: 720px;
  margin: 0 auto;
}

.page-header h1 {
  font-size: 30px;
  font-weight: 800;
  margin: 0 0 var(--space-sm);
}

.page-header p {
  color: var(--color-text-muted);
  font-size: 14px;
  margin: 0;
}

.page-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 var(--space-xl) var(--space-xxxl);
}

.policy-section {
  margin-bottom: var(--space-xl);
}

.policy-section h2 {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 var(--space-sm);
}

.policy-section p {
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.65;
  margin: 0;
}

.info-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.info-card h2 {
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 var(--space-xs);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.info-card p {
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.6;
  margin: 0;
}

.info-card a.platform-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--space-sm);
  font-weight: 600;
  font-size: 14px;
}