:root {
  color-scheme: light;
  --primary: #0F6E56;
  --primary-light: #14916f;
  --bg: #F7F8FA;
  --surface: #FFFFFF;
  --border: #E4E7EC;
  --text: #0F1419;
  --text-secondary: #5C6670;
}

* { box-sizing: border-box; }

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

header {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  padding: 28px 24px;
}

header .inner {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

header .logo {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 15px;
}

header a {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 17px;
}

nav {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px 24px 0;
  display: flex;
  gap: 18px;
  font-size: 14px;
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  padding-bottom: 6px;
  border-bottom: 2px solid transparent;
}

nav a.active, nav a:hover {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 24px 80px;
}

main h1 {
  font-size: 26px;
  margin-bottom: 4px;
}

main .updated {
  color: var(--text-secondary);
  font-size: 13px;
  margin-bottom: 28px;
}

main h2 {
  font-size: 17px;
  margin-top: 32px;
  margin-bottom: 8px;
}

main p, main li {
  font-size: 15px;
  color: #2b3137;
}

main ul {
  padding-left: 20px;
}

a.link { color: var(--primary); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  margin-top: 16px;
}

.card strong { display: block; margin-bottom: 4px; }

footer {
  text-align: center;
  color: var(--text-secondary);
  font-size: 12px;
  padding: 24px;
}

.hero {
  text-align: center;
  padding: 10px 0 20px;
}

.hero .icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 28px;
}

.btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  padding: 10px 18px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  margin-top: 12px;
}