:root {
  --color-primary: #176b87;
  --color-primary-contrast: #ffffff;
  --color-bg: #eef4f5;
  --color-surface: #ffffff;
  --color-text: #1d2e35;
  --color-muted: #60747b;
  --font-heading: Georgia, "Times New Roman", serif;
  --font-body: Arial, Helvetica, sans-serif;
  --radius: 14px;
  --color-accent: #c56c3d;
  --color-border: #d5e1e4;
  --color-soft: #e4f0f2;
  --color-dark: #123945;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-accent);
  text-decoration-line: underline;
  text-decoration-style: solid;
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
  font-weight: 700;
  transition: color 160ms ease, background-color 160ms ease, text-decoration-color 160ms ease;
}

a:visited {
  color: var(--color-primary);
  text-decoration-color: var(--color-primary);
}

a:hover {
  color: var(--color-primary);
  background-color: var(--color-soft);
  text-decoration-color: var(--color-primary);
}

a:focus-visible {
  color: var(--color-primary);
  background-color: var(--color-soft);
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  text-decoration-color: var(--color-primary);
}

.brand-link,
.brand-link:visited,
.brand-link:hover,
.brand-link:focus-visible,
.sponsor-list a,
.sponsor-list a:visited,
.sponsor-list a:hover,
.sponsor-list a:focus-visible {
  text-decoration: none;
}

.brand-link:hover,
.brand-link:focus-visible {
  background-color: transparent;
}

.sponsor-list a:hover,
.sponsor-list a:focus-visible {
  background-color: var(--color-soft);
}

.primary-nav a,
.primary-nav a:visited {
  color: var(--color-primary-contrast);
  text-decoration-color: var(--color-primary-contrast);
}

.primary-nav a:hover,
.primary-nav a:focus-visible {
  color: var(--color-primary-contrast);
  background-color: var(--color-dark);
  text-decoration-color: var(--color-primary-contrast);
}

.site-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  padding: 24px 0 20px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--color-dark);
  text-decoration: none;
}

.brand-link:hover,
.brand-link:focus-visible {
  background: transparent;
  color: var(--color-primary);
}

.brand-logo {
  display: block;
  width: clamp(170px, 25vw, 270px);
}

.header-tools,
.language-switcher,
.primary-nav ul {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.header-tools {
  justify-content: flex-end;
  font-size: 0.92rem;
}

.language-switcher {
  margin-top: 8px;
  justify-content: flex-end;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.language-switcher .active {
  color: var(--color-primary);
  font-weight: 700;
}

.primary-nav {
  background: var(--color-primary);
}

.primary-nav ul {
  justify-content: center;
  gap: 0;
}

.primary-nav a {
  display: block;
  padding: 13px 18px;
  color: var(--color-primary-contrast);
  text-decoration: underline;
  text-decoration-color: var(--color-primary-contrast);
  text-underline-offset: 4px;
  font-weight: 700;
}

.primary-nav a:hover,
.primary-nav a:focus-visible {
  color: var(--color-primary-contrast);
  background: var(--color-dark);
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 270px);
  gap: 28px;
  padding: 34px 0;
}

.content-card,
.sidebar-card,
.content-footer-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: 0 10px 28px var(--color-border);
}

.content-card {
  padding: clamp(22px, 4vw, 48px);
}

.content-card h1,
.content-footer-card h2,
.sidebar-card h2 {
  color: var(--color-dark);
  font-family: var(--font-heading);
  line-height: 1.2;
}

.content-card h1 {
  margin: 0 0 22px;
  font-size: clamp(2rem, 4vw, 3.25rem);
}

.content-card h2,
.content-footer-card h2,
.sidebar-card h2 {
  margin-top: 0;
  font-size: 1.35rem;
}

.hero-image {
  display: block;
  width: 100%;
  margin: 0 0 28px;
  border-radius: var(--radius);
}

.content-card p {
  margin: 0 0 18px;
}

.content-card strong {
  color: var(--color-dark);
}

.sidebar-card {
  align-self: start;
  padding: 20px;
}

.sidebar-card h2 {
  padding-bottom: 12px;
  border-bottom: 3px solid var(--color-accent);
}

.sponsor-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.sponsor-list a {
  display: block;
  padding: 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  text-align: center;
}

.sponsor-list img {
  display: block;
  width: 200px;
  max-width: 100%;
  margin: 0 auto;
}

.content-footer {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
  gap: 20px;
  padding-bottom: 34px;
}

.content-footer-card {
  padding: clamp(20px, 3vw, 30px);
}

.content-footer-card h2 {
  padding-bottom: 12px;
  border-bottom: 3px solid var(--color-accent);
}

.content-footer-card p {
  margin-top: 0;
}

.content-footer-card ul {
  margin: 0;
  padding-left: 22px;
}

.content-footer-card li {
  margin-bottom: 8px;
}

.advertisement {
  display: flex;
  justify-content: center;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--color-border);
}

.advertisement img {
  display: block;
  width: 250px;
  border: 0;
}

.site-footer {
  min-height: 34px;
  background: var(--color-dark);
}

@media (max-width: 820px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-tools,
  .language-switcher {
    justify-content: flex-start;
  }

  .primary-nav ul {
    justify-content: flex-start;
  }

  .primary-nav a {
    padding: 11px 14px;
  }

  .page-layout {
    grid-template-columns: 1fr;
  }

  .sidebar-card {
    order: -1;
  }

  .sponsor-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .site-shell {
    width: min(100% - 20px, 1180px);
  }

  .page-layout {
    gap: 18px;
    padding: 20px 0;
  }

  .content-footer {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .sponsor-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .primary-nav ul {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .primary-nav a {
    height: 100%;
    text-align: center;
  }
}