:root {
  --primary: #1b6b50;
  --primary-light: #4caf93;
  --primary-dark: #134b38;
  --accent: #f7b733;
  --neutral: #f4f6f8;
  --text: #1f2933;
  --text-light: #ffffff;
  --max-width: 1100px;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans", "Microsoft YaHei", sans-serif;
  background: var(--neutral);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--primary-dark);
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

header {
  background: var(--primary-dark);
  color: var(--text-light);
  padding: 1.25rem 0;
  box-shadow: 0 6px 16px rgba(19, 75, 56, 0.2);
}

.nav-container {
  width: min(92%, var(--max-width));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.branding {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.branding img {
  width: 52px;
  height: 52px;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid var(--accent);
  background: white;
}

.branding strong {
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

nav > ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

nav a {
  color: var(--text-light);
  font-weight: 600;
}

.language-switcher {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.language-switcher a {
  color: var(--accent);
  font-weight: 600;
}

main {
  width: min(92%, var(--max-width));
  margin: 0 auto;
  padding: 2.5rem 0;
}

.hero {
  background-image: linear-gradient(120deg, rgba(27, 107, 80, 0.45), rgba(19, 75, 56, 0.50)), url('/assets/img/lucas-canino-MFCzJQoFXzc-unsplash.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--text-light);
  border-radius: 22px;
  padding: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 2.5rem;
  box-shadow: 0 16px 38px rgba(19, 75, 56, 0.35);
  position: relative;
}

.hero h1 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  line-height: 1.2;
}

.hero p {
  font-size: 1rem;
  max-width: 640px;
  margin-bottom: 1rem;
}

.section {
  background: white;
  border-radius: 20px;
  padding: clamp(1.8rem, 4vw, 2.6rem);
  margin-bottom: 2rem;
  box-shadow: 0 10px 24px rgba(15, 32, 28, 0.08);
}

.section h2,
.section h3 {
  margin-top: 0;
  color: var(--primary-dark);
}

.cards {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 720px) {
  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.card {
  border: 1px solid rgba(27, 107, 80, 0.12);
  border-radius: 16px;
  padding: 1.5rem;
  background: rgba(244, 246, 248, 0.7);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover,
.card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 12px 26px rgba(27, 107, 80, 0.18);
}

.card h3 {
  margin-top: 0;
}

.badge {
  display: inline-block;
  background: var(--primary);
  color: var(--text-light);
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.timeline {
  border-left: 3px solid rgba(27, 107, 80, 0.3);
  margin: 1.5rem 0;
  padding-left: 1.5rem;
}

.timeline-item {
  position: relative;
  margin-bottom: 1.75rem;
}

.timeline-item::before {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid white;
  left: -2.1rem;
  top: 0.2rem;
}

.table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

.table th,
.table td {
  border: 1px solid rgba(27, 107, 80, 0.15);
  padding: 0.75rem;
  text-align: left;
}

.notice {
  background: rgba(247, 183, 51, 0.15);
  border-left: 4px solid var(--accent);
  padding: 1rem;
  border-radius: 12px;
  margin: 1rem 0;
}

footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.85);
  padding: 2rem 0;
}

footer .footer-content {
  width: min(92%, var(--max-width));
  margin: 0 auto;
  display: grid;
  gap: 1.5rem;
}

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

.social-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

blockquote {
  background: rgba(27, 107, 80, 0.1);
  border-left: 4px solid var(--primary);
  margin: 1.5rem 0;
  padding: 1rem 1.5rem;
}

.media-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 880px) {
  .media-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

img.responsive {
  max-width: 100%;
  border-radius: 14px;
}

.breadcrumbs {
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  color: rgba(31, 41, 51, 0.7);
}

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

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  background: rgba(27, 107, 80, 0.08);
  border-radius: 999px;
  font-size: 0.8rem;
  margin-right: 0.4rem;
}

.table caption {
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.callout {
  background: linear-gradient(135deg, rgba(27, 107, 80, 0.12), rgba(247, 183, 51, 0.18));
  border-radius: 18px;
  padding: 1.75rem;
  margin: 1.5rem 0 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--accent);
  color: var(--primary-dark);
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button:hover,
.button:focus {
  transform: translateY(-2px);
  box-shadow: 0 10px 16px rgba(247, 183, 51, 0.35);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 3px;
  background: var(--text-light);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
    order: 3;
  }

  .nav-container {
    flex-wrap: wrap;
  }

  .main-nav {
    display: none;
    width: 100%;
    order: 4;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
  }

  .main-nav.open {
    display: block;
  }

  .main-nav > ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  nav .sub-nav {
    display: flex;
    padding-left: 1rem;
    margin-top: 0.5rem;
  }

  .language-switcher {
    order: 2;
    margin-left: auto;
  }

  .branding {
    order: 1;
  }
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  position: static;
  width: auto;
  height: auto;
  padding: 0.75rem 1rem;
  background: var(--accent);
  color: var(--primary-dark);
  border-radius: 999px;
  z-index: 1000;
}

nav .sub-nav {
  display: none;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 0.35rem;
  padding-left: 0.25rem;
}
nav .nav-item-parent:hover .sub-nav,
nav .nav-item-parent:focus-within .sub-nav {
  display: flex;
}
nav .sub-nav a {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.78);
}
nav .sub-nav a:hover, nav .sub-nav a:focus {
  color: var(--accent);
}
nav .nav-item-parent {
  min-width: auto;
  position: relative;
}