:root {
  --bg: #f8f9fa;
  --surface: #ffffff;
  --surface-soft: #ecfdf5;
  --ink: #1a1a2e;
  --text: #374151;
  --muted: #6b7280;
  --line: #dce7e2;
  --brand: #10b981;
  --brand-strong: #047857;
  --teal: #06b6d4;
  --shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
  --radius-lg: 20px;
  --radius-md: 14px;
  --container: 1040px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(16, 185, 129, 0.10), transparent 34%),
    radial-gradient(circle at 85% 18%, rgba(6, 182, 212, 0.10), transparent 28%),
    linear-gradient(180deg, #fbfcfc 0%, var(--bg) 52%, #f3fbf8 100%);
  line-height: 1.7;
}

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

.site-shell {
  width: min(calc(100% - 32px), var(--container));
  margin: 0 auto;
  padding: 24px 0 56px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.80);
  border: 1px solid rgba(220, 231, 226, 0.86);
  border-radius: 999px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 16px;
  z-index: 10;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: 0;
  color: var(--ink);
  white-space: nowrap;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  box-shadow: 0 8px 18px rgba(16, 185, 129, 0.16);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.nav a {
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 600;
}

.nav a[aria-current="page"],
.nav a:hover {
  color: var(--brand-strong);
}

.hero,
.page-layout {
  padding-top: 72px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(280px, 0.84fr);
  gap: 28px;
  align-items: stretch;
}

.hero-brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
  color: var(--ink);
  font-size: 1.12rem;
  font-weight: 800;
}

.hero-logo {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  box-shadow: 0 14px 34px rgba(16, 185, 129, 0.18);
}

.eyebrow,
.card-kicker,
.card-label {
  margin: 0 0 10px;
  color: var(--brand-strong);
  font-size: 0.9rem;
  font-weight: 750;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
  line-height: 1.08;
}

h1 {
  font-size: clamp(2.25rem, 5vw, 4.75rem);
}

h2 {
  font-size: 1.45rem;
}

.lede {
  max-width: 64ch;
  margin: 22px 0 0;
  color: var(--text);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  font-weight: 750;
}

.button-primary {
  background: var(--brand);
  color: #ffffff;
}

.button-secondary {
  background: #ffffff;
  color: var(--brand-strong);
  border: 1px solid var(--line);
}

.hero-card,
.info-card,
.content-card {
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(220, 231, 226, 0.90);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 28px;
}

.feature-list {
  padding: 0;
  margin: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.feature-list li {
  position: relative;
  padding-left: 24px;
  color: var(--text);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.74em;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--brand), var(--teal));
}

.grid-section {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}

.info-card {
  padding: 24px;
}

.info-card p {
  color: var(--text);
  margin: 10px 0 0;
}

.inline-link {
  display: inline-flex;
  margin-top: 14px;
  color: var(--brand-strong);
  font-weight: 750;
}

.page-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.page-nav {
  position: sticky;
  top: 96px;
  display: grid;
  gap: 10px;
}

.page-nav a {
  padding: 10px 12px;
  color: var(--muted);
  border-radius: 12px;
  font-weight: 650;
}

.page-nav a:hover,
.page-nav a[aria-current="page"] {
  color: var(--brand-strong);
  background: var(--surface-soft);
}

.content-card {
  padding: 34px;
}

.content-card h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.updated {
  margin: 10px 0 28px;
  color: var(--muted);
  font-size: 0.95rem;
}

.content-card h2 {
  margin-top: 34px;
  font-size: 1.32rem;
}

.content-card p,
.content-card li {
  color: var(--text);
  font-size: 1rem;
}

.content-card p {
  margin: 12px 0;
}

.content-card ul {
  padding-left: 20px;
}

.content-card a {
  color: var(--brand-strong);
  font-weight: 700;
}

.callout {
  margin: 22px 0;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: var(--surface-soft);
  color: #065f46;
}

.callout p {
  margin: 0;
  color: #065f46;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-top: 52px;
  color: var(--muted);
}

.footer-links {
  display: flex;
  gap: 16px;
}

.footer a:hover {
  color: var(--brand-strong);
}

@media (max-width: 760px) {
  .topbar {
    align-items: flex-start;
    border-radius: 22px;
    flex-direction: column;
  }

  .hero,
  .page-layout,
  .grid-section {
    grid-template-columns: 1fr;
  }

  .page-nav {
    position: static;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .content-card {
    padding: 24px;
  }

  .footer {
    align-items: flex-start;
    flex-direction: column;
  }
}