:root {
  --green: #1a9e6e;
  --green-light: #e8f7f1;
  --green-dark: #0d6b49;
  --blue: #2563eb;
  --blue-light: #eff6ff;
  --blue-dark: #1d4ed8;
  --text: #111;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --bg: #fafaf9;
  --white: #ffffff;
  --radius: 14px;
  --radius-sm: 8px;
  --red: #ef4444;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'DM Sans', sans-serif; background: var(--bg); color: var(--text); }
nav {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-logo {
  font-family: 'Sora', sans-serif;
  font-size: 22px;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
}
.nav-logo span { color: var(--green); }
.nav-back { font-size: 14px; color: var(--text-muted); text-decoration: none; }
.nav-back:hover { color: var(--green); }