:root {
  --color-bg: #f6f9f8;
  --color-surface: #ffffff;
  --color-text: #18353a;
  --color-muted: #5f767b;
  --color-border: #d5e1df;
  --color-accent: #1f9a73;
  --color-accent-dark: #044343;
  --font-heading: 'Comfortaa', sans-serif;
  --font-body: 'Inter', sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.5;
}

.container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 clamp(20px, 3vw, 60px);
}

.header {
  background: var(--color-surface);
  border-bottom: 1px solid rgba(4, 67, 67, 0.08);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-grid {
  min-height: 80px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
}

.header-logo a {
  font-family: var(--font-heading);
  font-size: 28px;
  font-weight: 700;
  color: #053f42;
  text-decoration: none;
}

.header-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 26px;
}

.header-nav a {
  color: #32585f;
  font-size: 16px;
  font-weight: 500;
  text-decoration: none;
}

.header-nav a:hover {
  color: #0b4248;
}

.header-nav-buttons,
.header-buttons {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  background: transparent;
}

.btn-primary {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: #fff;
}

.btn-outline {
  border-color: rgba(4, 67, 67, 0.3);
  color: #0b4248;
  background: #fff;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(4, 67, 67, 0.25);
  border-radius: 10px;
  background: #fff;
  padding: 8px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: #0b4248;
}

.about-wrapper {
  width: min(1300px, calc(100% - 40px));
  margin: 34px auto 56px;
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
}

.about-sidebar {
  position: sticky;
  top: 104px;
  align-self: start;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 18px;
}

.sidebar-nav {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.sidebar-nav a {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--color-muted);
  font-size: 14px;
  font-weight: 500;
}

.sidebar-nav a:hover {
  color: #0b4248;
  background: rgba(4, 67, 67, 0.05);
}

.about-container {
  min-width: 0;
}

.about-header {
  margin-bottom: 18px;
}

.about-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(30px, 4.2vw, 44px);
  color: #0d3c41;
}

.about-content {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: clamp(18px, 3vw, 34px);
}

.about-content h2 {
  margin-top: 24px;
  margin-bottom: 10px;
  font-size: clamp(21px, 2.1vw, 28px);
  color: #0f3e43;
}

.about-content h3 {
  margin-top: 18px;
  margin-bottom: 8px;
  font-size: clamp(17px, 1.6vw, 21px);
  color: #18484f;
}

.about-content p,
.about-content li {
  color: #2f5359;
  font-size: 16px;
}

.about-content ul {
  padding-left: 1.35rem;
}

.about-divider {
  height: 1px;
  margin: 22px 0;
  background: #e1ebea;
}

.about-highlight {
  font-weight: 600;
  color: #0f514f;
}

.team-member {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 18px;
  margin-top: 18px;
}

.team-member-photo img {
  width: 180px;
  height: 180px;
  border-radius: 18px;
  object-fit: cover;
}

.team-member-title {
  font-weight: 600;
  color: #4a6a70;
}

.footer {
  margin-top: 44px;
  background: #fff;
  border-top: 1px solid rgba(4, 67, 67, 0.08);
}

.footer-grid {
  padding: 38px 0 24px;
  display: grid;
  gap: 20px;
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(180px, 240px) repeat(3, minmax(140px, 1fr));
  gap: clamp(14px, 2vw, 24px);
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 28px;
  color: #053f42;
  margin-bottom: 14px;
}

.footer-social {
  display: flex;
  gap: 10px;
}

.social-icon {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(4, 67, 67, 0.06);
}

.social-icon img {
  width: 18px;
  height: 18px;
}

.footer-column h4 {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: 0.3px;
  color: #0d3f45;
}

.footer-column ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 6px;
}

.footer-column a,
.footer-links a {
  color: #47666c;
  font-size: 14px;
  text-decoration: none;
}

.footer-column a:hover,
.footer-links a:hover {
  color: #0b4248;
}

.footer-disclaimer {
  color: #5d7479;
  font-size: 13px;
  line-height: 1.45;
}

.footer-divider-full {
  height: 1px;
  background: #e4eded;
}

.footer-bottom {
  padding: 14px 0 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 22px;
}

.footer-copyright {
  color: #60767b;
  font-size: 13px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

@media (max-width: 991px) {
  .header-grid {
    grid-template-columns: auto auto;
    gap: 14px;
  }

  .header-buttons {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
    justify-self: end;
  }

  .header-nav {
    grid-column: 1 / -1;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    padding: 8px 0 18px;
    gap: 12px;
  }

  .header-nav.active {
    display: flex;
  }

  .header-nav-buttons {
    width: 100%;
    flex-wrap: wrap;
    padding-top: 6px;
  }

  .about-wrapper {
    grid-template-columns: 1fr;
    margin-top: 20px;
  }

  .about-sidebar {
    position: static;
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .footer-main {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .team-member {
    grid-template-columns: 1fr;
  }

  .team-member-photo img {
    width: 140px;
    height: 140px;
  }
}