:root {
  --bg-top: #0d1c12;
  --bg-bottom: #05100a;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-strong: rgba(255, 255, 255, 0.06);
  --surface-border: rgba(255, 255, 255, 0.08);
  --text: #e8f3ea;
  --text-dim: #a3b3a6;
  --accent: #7fd49a;
  --accent-strong: #5fc483;
  --link: #9ee0b3;
  --radius: 14px;
  --radius-lg: 20px;
  --max-width: 720px;
  --max-width-wide: 960px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg-top: #f2fcf2;
    --bg-bottom: #e0f5e6;
    --surface: rgba(0, 0, 0, 0.03);
    --surface-strong: rgba(0, 0, 0, 0.05);
    --surface-border: rgba(0, 0, 0, 0.08);
    --text: #14241a;
    --text-dim: #4f6555;
    --accent: #2c8a4f;
    --accent-strong: #226d3f;
    --link: #1f6e3d;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  color: var(--text);
  background: linear-gradient(180deg, var(--bg-top) 0%, var(--bg-bottom) 100%);
  background-attachment: fixed;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.page.landing {
  max-width: var(--max-width-wide);
}

/* ─── Topnav ──────────────────────────────────────────────── */

.topnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  font-size: 14px;
}

.topnav a {
  color: var(--link);
  text-decoration: none;
}

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

.topnav .brand {
  font-weight: 700;
  font-size: 16px;
  letter-spacing: -0.01em;
  color: var(--text);
}

.topnav .brand:hover { text-decoration: none; opacity: 0.8; }

.lang-toggle {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 999px;
}

.lang-toggle button {
  border: 0;
  background: transparent;
  color: var(--text-dim);
  font: inherit;
  font-size: 13px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 999px;
  cursor: pointer;
}

.lang-toggle button.active {
  background: var(--accent);
  color: #052010;
}

.lang-section[hidden] { display: none; }

/* ─── Hero ─────────────────────────────────────────────────── */

.hero {
  text-align: center;
  padding: 24px 0 48px;
}

.app-icon {
  width: 140px;
  height: 140px;
  border-radius: 30px;
  display: inline-block;
  margin: 0 auto 20px;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.35), 0 4px 12px rgba(0, 0, 0, 0.18);
}

@media (prefers-color-scheme: light) {
  .app-icon { box-shadow: 0 18px 40px rgba(20, 80, 40, 0.18), 0 4px 12px rgba(20, 80, 40, 0.10); }
}

.hero h1 {
  font-size: 48px;
  margin: 0 0 14px;
  letter-spacing: -0.025em;
  font-weight: 700;
}

.hero-tagline {
  margin: 0 0 12px;
  font-size: 20px;
  font-weight: 500;
  color: var(--text);
}

.hero-sub {
  max-width: 540px;
  margin: 0 auto 28px;
  font-size: 16px;
  color: var(--text-dim);
}

.tagline {
  margin: 4px 0;
  font-size: 18px;
  color: var(--text-dim);
}

.tagline-tr {
  margin: 4px 0 0;
  font-size: 16px;
  color: var(--text-dim);
  opacity: 0.85;
}

.cta-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.cta-pill {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 22px 10px 18px;
  background: #000;
  color: #fff;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  text-decoration: none;
  user-select: none;
}

@media (prefers-color-scheme: light) {
  .cta-pill { background: #000; color: #fff; }
}

.cta-glyph {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
}

.cta-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.1;
}

.cta-eyebrow {
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  opacity: 0.78;
}

.cta-store {
  font-size: 19px;
  font-weight: 600;
  margin-top: 2px;
}

.cta-meta {
  font-size: 13px;
  color: var(--text-dim);
}

/* ─── Section blocks ──────────────────────────────────────── */

.block {
  padding: 48px 0 8px;
}

.block.closing {
  text-align: center;
  padding-bottom: 32px;
}

.section-title {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.015em;
  margin: 0 0 24px;
  text-align: center;
}

.closing-line {
  font-size: 18px;
  color: var(--text);
  margin: 0;
}

/* ─── Feature grid ────────────────────────────────────────── */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

@media (max-width: 820px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 520px) {
  .feature-grid { grid-template-columns: 1fr; }
}

.feature-card {
  padding: 22px 22px 24px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.feature-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  background: var(--surface-strong);
}

.feature-icon {
  display: inline-block;
  font-size: 30px;
  line-height: 1;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin: 0 0 8px;
  letter-spacing: -0.005em;
}

.feature-card p {
  font-size: 14.5px;
  margin: 0;
  color: var(--text-dim);
  line-height: 1.5;
}

/* ─── Steps ───────────────────────────────────────────────── */

.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.steps li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
}

.step-num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  background: var(--accent);
  color: #052010;
  font-weight: 700;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.steps li > div { flex: 1; }

.steps strong {
  display: block;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.steps p {
  margin: 0;
  font-size: 14.5px;
  color: var(--text-dim);
  line-height: 1.5;
}

/* ─── Footer ──────────────────────────────────────────────── */

.footer {
  margin-top: 64px;
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
}

.landing-footer {
  border-top: 1px solid var(--surface-border);
  padding-top: 24px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--link);
  text-decoration: none;
  font-size: 14px;
}

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

/* ─── Legacy link cards (kept for older pages if any) ─────── */

.links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 24px 0 48px;
}

@media (max-width: 540px) {
  .links { grid-template-columns: 1fr; }
}

.link-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px 22px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  text-decoration: none;
  color: var(--text);
  transition: transform 0.12s ease, border-color 0.12s ease;
}

.link-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.link-title {
  font-weight: 600;
  font-size: 17px;
}

.link-sub {
  font-size: 14px;
  color: var(--text-dim);
}

/* ─── Article (legal pages) ──────────────────────────────── */

article h1 {
  font-size: 32px;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

article .updated {
  color: var(--text-dim);
  font-size: 14px;
  margin: 0 0 32px;
}

article h2 {
  font-size: 20px;
  margin: 32px 0 12px;
  letter-spacing: -0.005em;
}

article h3 {
  font-size: 17px;
  margin: 20px 0 8px;
}

article p, article li {
  color: var(--text);
}

article a {
  color: var(--link);
}

article ul {
  padding-left: 20px;
}

article li {
  margin: 6px 0;
}

article code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  font-size: 14px;
  padding: 1px 6px;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 6px;
}