:root {
  --bg: #0A0F0B;
  --card: rgba(255, 255, 255, 0.05);
  --card-strong: rgba(255, 255, 255, 0.08);
  --stroke: rgba(255, 255, 255, 0.09);
  --text: #F2F5F9;
  --sub: #8B94A6;
  --faint: #5A6374;
  --accent: #22C55E;
  --accent-ink: #052E16;
  --accent-soft: rgba(34, 197, 94, 0.13);
  --radius: 18px;
}

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

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", system-ui, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Soft accent wash at the top, mirrors the app's screen background */
body::before {
  content: "";
  position: fixed;
  inset: 0 0 auto 0;
  height: 520px;
  background: radial-gradient(130% 52% at 50% -6%, rgba(34, 197, 94, 0.14), rgba(34, 197, 94, 0) 62%);
  pointer-events: none;
  z-index: 0;
}

.wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 56px 22px 40px;
  flex: 1;
}

/* --- Brand --- */

.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-bottom: 40px;
}

.mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(180deg, #37D469, #169C49);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(34, 197, 94, 0.32);
  flex-shrink: 0;
}

.mark-t {
  color: #fff;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
}

.mark .mark-t { font-size: 26px; }

.brand-name {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.brand-sub {
  font-size: 13px;
  color: var(--sub);
}

/* --- Hero --- */

.hero { text-align: center; padding: 26px 0 44px; }

.hero .mark-lg {
  width: 96px;
  height: 96px;
  border-radius: 26px;
  margin: 0 auto 26px;
  background: linear-gradient(180deg, #37D469, #169C49);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 18px 48px rgba(34, 197, 94, 0.3);
}

.hero .mark-lg .mark-t { font-size: 58px; }

h1 {
  font-size: clamp(30px, 6vw, 40px);
  font-weight: 800;
  letter-spacing: -0.7px;
  line-height: 1.15;
}

.tagline {
  font-size: 17px;
  color: var(--sub);
  margin-top: 12px;
}

/* --- Content --- */

h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.3px;
  margin: 36px 0 14px;
}

h3 {
  font-size: 16px;
  font-weight: 650;
  margin: 24px 0 8px;
}

p { color: var(--sub); margin-bottom: 14px; }

ul { color: var(--sub); margin: 0 0 16px 20px; }
li { margin-bottom: 8px; }

strong { color: var(--text); font-weight: 620; }

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

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin: 8px 0 12px;
}

.card {
  background: var(--card);
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  padding: 20px;
}

.card h3 { margin: 0 0 6px; font-size: 15.5px; }
.card p { font-size: 14px; margin: 0; }

.note {
  background: var(--accent-soft);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 24px 0;
}
.note p { color: var(--text); margin: 0; font-size: 15px; }

.meta {
  font-size: 13px;
  color: var(--faint);
  margin-bottom: 28px;
}

.back {
  display: inline-block;
  font-size: 14px;
  margin-bottom: 26px;
}

/* --- Footer --- */

footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--stroke);
  padding: 26px 22px 40px;
  text-align: center;
  font-size: 13.5px;
  color: var(--faint);
}

footer nav { margin-bottom: 10px; }
footer nav a { margin: 0 9px; color: var(--sub); }

@media (max-width: 520px) {
  .wrap { padding: 40px 18px 32px; }
  .hero { padding: 12px 0 32px; }
}