:root {
  --bg: #f7f6ef;
  --surface: #fffef9;
  --surface-soft: #eef2e7;
  --text: #20251f;
  --muted: #62695f;
  --accent: #2f6b53;
  --accent-dark: #214d3b;
  --line: #dfe5d8;
  --shadow: 0 18px 50px rgba(39, 64, 49, 0.10);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a { color: var(--accent-dark); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto;
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-size: 1.25rem;
  font-weight: 800;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: inline-grid;
  place-items: center;
  background: var(--accent);
  color: white;
  font-size: 0.82rem;
  letter-spacing: 0.03em;
}

nav {
  display: flex;
  gap: 20px;
}

nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 650;
}

nav a:hover,
footer a:hover { text-decoration: underline; }

.hero {
  width: min(1120px, calc(100% - 36px));
  margin: 28px auto 0;
}

.hero-banner {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 30px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero-banner img {
  display: block;
  width: 100%;
  height: auto;
}

.hero-details {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px 28px;
  padding: 26px 10px 0;
}

.intro {
  flex: 1 1 610px;
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

.button {
  display: inline-block;
  padding: 12px 19px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 750;
}

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

.primary:hover { background: var(--accent-dark); }

.secondary {
  color: var(--text);
  background: var(--surface-soft);
  border: 1px solid var(--line);
}

.coming-soon {
  flex-basis: 100%;
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.features,
.about {
  width: min(1120px, calc(100% - 36px));
}

.features {
  margin: 26px auto 22px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.about { margin: 0 auto 70px; }

.features article,
.content-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 28px;
}

.features article > span { font-size: 2rem; }
.features h2 { margin: 10px 0 8px; font-size: 1.25rem; }
.features p { margin: 0; color: var(--muted); }

.page {
  width: min(840px, calc(100% - 36px));
  margin: 38px auto 70px;
}

.page h1 {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  margin-bottom: 12px;
}

.page .lead {
  color: var(--muted);
  font-size: 1.08rem;
}

.content-card { margin-top: 26px; }

.content-card h2 { margin-top: 30px; }
.content-card h2:first-child { margin-top: 0; }
.content-card ul { padding-left: 24px; }
.content-card li + li { margin-top: 8px; }

.notice {
  background: var(--surface-soft);
  border-left: 4px solid var(--accent);
  padding: 16px 18px;
  border-radius: 10px;
}

footer {
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto;
  padding: 28px 0 42px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 18px;
  color: var(--muted);
  font-size: 0.92rem;
}

footer p { margin: 0; }

@media (max-width: 720px) {
  .site-header {
    min-height: 72px;
    align-items: flex-start;
    padding-top: 18px;
  }

  nav {
    gap: 12px;
    font-size: 0.92rem;
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .hero { margin-top: 18px; }
  .hero-banner { border-radius: 22px; }
  .hero-details { padding: 20px 4px 0; }
  .intro { font-size: 1rem; }
  .features { grid-template-columns: 1fr; }

  footer {
    flex-direction: column;
    padding-bottom: 30px;
  }
}