*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }


:root {
  --accent:       #0F6E56;
  --accent-light: #E1F5EE;
  --accent-dark:  #085041;
  --accent-mid:   #1D9E75;
  --accent-faint: #9FE1CB;
  --black:        #1A1A1A;
  --gray:         #555555;
  --light-gray:   #888888;
  --border:       #d0d0d0;
  --surface:      #f2f2f1;
  --white:        #ffffff;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--black);
  background: var(--white);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── NAV ── */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px max(40px, calc(50vw - 620px));
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--white);
  z-index: 10;
}
.logo {
  font-size: 15px;
  font-weight: 500;
  color: var(--black);
  text-decoration: none;
}
.nav-links { display: flex; gap: 24px; }
.nav-links a {
  font-size: 13px;
  color: var(--gray);
  text-decoration: none;
  padding: 4px 0;
}
.nav-links a:hover { color: var(--black); }
.nav-links a.active {
  color: var(--accent);
  border-bottom: 1.5px solid var(--accent);
}

/* ── BUTTONS ── */
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-light);
  border: none;
  border-radius: 8px;
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
}
.btn-primary:hover { background: var(--accent-dark); }

.btn-secondary {
  display: inline-block;
  background: transparent;
  color: var(--gray);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 18px;
  font-size: 13px;
  cursor: pointer;
  text-decoration: none;
}
.btn-secondary:hover { background: var(--surface); }

/* ── BADGES ── */
.badge {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 10px;
  font-weight: 500;
  padding: 3px 9px;
  border-radius: 20px;
}

/* ── FOOTER ── */
footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding: 20px max(40px, calc(50vw - 620px));
  font-size: 11px;
  color: var(--light-gray);
  display: flex;
  justify-content: space-between;
}

/* ── RESPONSIVE ── */
@media (max-width: 700px) {
  nav { padding: 14px 20px; }
  footer { padding: 16px 20px; flex-direction: column; gap: 6px; }
}