:root {
  --green: #22c55e;
  --green-dark: #16a34a;
  --bg: #fafafa;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }

header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px; max-width: 1100px; margin: 0 auto;
}
.brand {
  display: flex; align-items: center; gap: 12px;
  text-decoration: none; color: var(--text);
}
.brand img { width: 36px; height: 36px; border-radius: 8px; }
.brand span { font-weight: 700; font-size: 18px; }
nav a {
  color: var(--muted); text-decoration: none;
  margin-left: 28px; font-size: 15px;
}
nav a:hover { color: var(--text); }

.hero {
  text-align: center; padding: 88px 24px 64px;
  background: linear-gradient(180deg, #f0fdf4 0%, var(--bg) 100%);
}
.hero img.logo {
  width: 120px; height: 120px; border-radius: 26px;
  margin-bottom: 28px;
  box-shadow: 0 16px 40px rgba(34, 197, 94, 0.25);
}
.hero h1 {
  font-size: 46px; line-height: 1.12;
  max-width: 720px; margin: 0 auto 20px;
  font-weight: 700; letter-spacing: -0.02em;
}
.hero p.lead {
  font-size: 19px; color: var(--muted);
  max-width: 600px; margin: 0 auto 36px;
}
.cta-row {
  display: flex; justify-content: center; flex-wrap: wrap; gap: 12px;
}
.btn {
  display: inline-block; padding: 14px 28px; border-radius: 12px;
  text-decoration: none; font-weight: 600; font-size: 16px;
  transition: all 0.15s; border: 1px solid transparent;
}
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: var(--green-dark); }
.btn-outline {
  border-color: var(--border); color: var(--text); background: #fff;
}
.btn-outline:hover { border-color: var(--text); }

section.features {
  padding: 72px 24px; background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
section.features h2 {
  text-align: center; font-size: 32px;
  margin-bottom: 12px; letter-spacing: -0.01em;
}
section.features p.subtitle {
  text-align: center; color: var(--muted);
  margin-bottom: 48px; font-size: 17px;
}
.grid {
  display: grid; gap: 20px;
  max-width: 1100px; margin: 0 auto;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.card {
  background: var(--bg); padding: 28px;
  border-radius: 16px; border: 1px solid var(--border);
}
.card h3 { font-size: 18px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }

section.about { padding: 72px 24px; text-align: center; }
section.about h2 { font-size: 30px; margin-bottom: 16px; letter-spacing: -0.01em; }
section.about p {
  max-width: 640px; margin: 0 auto 24px;
  color: var(--muted); font-size: 17px;
}

footer {
  background: #fff; border-top: 1px solid var(--border);
  padding: 28px 24px; color: var(--muted); font-size: 14px;
}
.footer-inner {
  display: flex; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
  max-width: 1100px; margin: 0 auto;
}
.footer-links a {
  color: var(--muted); text-decoration: none; margin-left: 20px;
}
.footer-links a:first-child { margin-left: 0; }
.footer-links a:hover { color: var(--text); }

article.legal {
  padding: 48px 24px 72px;
  max-width: 760px; margin: 0 auto;
}
article.legal h1 {
  font-size: 32px; margin-bottom: 8px;
  letter-spacing: -0.01em;
}
article.legal h2 {
  font-size: 20px; margin: 32px 0 12px;
}
article.legal p { margin-bottom: 12px; }
article.legal ul { padding-left: 24px; margin-bottom: 12px; }
article.legal li { margin-bottom: 6px; }
article.legal .updated {
  color: var(--muted); font-size: 14px; margin-bottom: 32px;
}
article.legal a { color: var(--green-dark); }

@media (max-width: 600px) {
  nav { display: none; }
  .hero { padding: 56px 24px 48px; }
  .hero h1 { font-size: 32px; }
  .hero p.lead { font-size: 17px; }
  .footer-inner { flex-direction: column; }
  .footer-links a { margin-left: 0; margin-right: 16px; }
}