:root {
  --color-primary: #1f4f88;
  --color-primary-dark: #163a63;
  --color-secondary: #4f8a3b;
  --color-text: #1f2a36;
  --color-muted-text: #5a6878;
  --color-border: #d8dee5;
  --color-bg: #f4f6f8;
  --color-white: #ffffff;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-soft: 0 4px 16px rgba(14, 33, 54, 0.08);
  --container: 1100px;
}

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

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

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

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(var(--container), 92%);
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  background: var(--color-white);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  z-index: 1000;
}

.site-header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem 0;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text);
  font-weight: 700;
}

.brand:hover {
  text-decoration: none;
}

.brand-logo {
  width: 56px;
  height: 56px;
  display: block;
  flex: 0 0 56px;
  filter: drop-shadow(0 3px 8px rgba(14, 33, 54, 0.18));
}

.brand-text small {
  display: block;
  font-weight: 500;
  color: var(--color-muted-text);
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.main-nav a {
  display: inline-block;
  padding: 0.45rem 0.8rem;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-weight: 600;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  background: #eaf0f7;
  text-decoration: none;
}

.main-nav .active {
  background: #dfeaf7;
  color: var(--color-primary-dark);
}

.notice-bar {
  background: #ecf2f9;
  color: var(--color-primary-dark);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
}

.notice-bar .container {
  padding: 0.55rem 0;
}

.hero {
  background: linear-gradient(115deg, #f7fafd 0%, #edf3fb 100%);
  border-bottom: 1px solid var(--color-border);
}

.hero-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1.45fr 1fr;
  padding: 3.2rem 0;
}

.hero h1,
.page-header h1 {
  line-height: 1.2;
  margin: 0 0 0.9rem;
  font-size: clamp(1.9rem, 3.2vw, 2.75rem);
}

.hero p {
  margin: 0 0 1.25rem;
  color: var(--color-muted-text);
  max-width: 62ch;
}

.actions {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-weight: 700;
}

.btn:hover {
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-secondary {
  background: var(--color-white);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.hero-panel {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  padding: 1.2rem;
}

.hero-panel h2 {
  margin-top: 0;
  font-size: 1.12rem;
}

.hero-panel dl {
  margin: 0;
  display: grid;
  gap: 0.9rem;
}

.hero-panel dt {
  font-weight: 700;
  color: var(--color-primary-dark);
}

.hero-panel dd {
  margin: 0.2rem 0 0;
  color: var(--color-muted-text);
}

.image-frame {
  margin: 0 0 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: #dde6ef;
}

.image-frame img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.hero-media img {
  aspect-ratio: 16 / 10;
}

.section-image {
  margin-bottom: 1.2rem;
}

.image-caption {
  margin: 0;
  padding: 0.55rem 0.75rem;
  background: #f3f6f9;
  border-top: 1px solid var(--color-border);
  color: var(--color-muted-text);
  font-size: 0.9rem;
}

.section {
  padding: 3rem 0;
}

.section-muted {
  background: #edf1f4;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section h2 {
  margin: 0 0 1.25rem;
  line-height: 1.25;
}

.lead {
  color: var(--color-muted-text);
  max-width: 70ch;
  margin-top: 0;
}

.grid-3,
.grid-2,
.logo-grid {
  display: grid;
  gap: 1rem;
}

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

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

.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.1rem;
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.55rem;
  font-size: 1.1rem;
}

.card p {
  margin: 0;
  color: var(--color-muted-text);
}

.circle-badge {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 800;
  color: var(--color-primary-dark);
  background: #e3edf9;
  border: 1px solid #cdddf3;
  margin-bottom: 0.85rem;
}

.list-clean {
  list-style: none;
  padding: 0;
  margin: 0;
}

.list-clean li + li {
  margin-top: 0.55rem;
}

.publication-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.publication-list li {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1rem;
}

.publication-list li + li {
  margin-top: 0.75rem;
}

.publication-meta {
  color: var(--color-muted-text);
  font-size: 0.93rem;
}

.stat-row {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.stat {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.95rem;
}

.stat strong {
  display: block;
  font-size: 1.35rem;
  color: var(--color-primary-dark);
}

.logo-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.logo-badge {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  min-height: 74px;
  display: grid;
  place-items: center;
  color: #4a5868;
  font-weight: 700;
  text-align: center;
  padding: 0.5rem;
}

.page-header {
  background: linear-gradient(90deg, #f5f8fb, #edf2f8);
  border-bottom: 1px solid var(--color-border);
  padding: 2.5rem 0;
}

.timeline {
  border-left: 3px solid #c4d6ea;
  padding-left: 1rem;
}

.timeline article {
  position: relative;
  padding: 0.25rem 0 1.2rem;
}

.timeline article::before {
  content: "";
  position: absolute;
  left: -1.5rem;
  top: 0.35rem;
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border-radius: 50%;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

input,
textarea,
select {
  width: 100%;
  font: inherit;
  border: 1px solid #bec9d5;
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.75rem;
  background: var(--color-white);
}

textarea {
  min-height: 130px;
  resize: vertical;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-grid .full {
  grid-column: 1 / -1;
}

.site-footer {
  margin-top: 3rem;
  background: var(--color-primary-dark);
  color: #dce8f6;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 1rem;
  padding: 2rem 0 1.2rem;
}

.site-footer h2,
.site-footer h3 {
  color: var(--color-white);
  margin-top: 0;
}

.site-footer a {
  color: #dce8f6;
}

.site-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer li + li {
  margin-top: 0.4rem;
}

.footer-bottom {
  border-top: 1px solid rgba(214, 226, 240, 0.3);
  padding: 0.8rem 0 1.2rem;
  font-size: 0.9rem;
}

@media (max-width: 920px) {
  .hero-grid,
  .grid-3,
  .grid-2,
  .logo-grid,
  .stat-row,
  .footer-grid,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .main-nav ul {
    gap: 0.2rem;
  }

  .hero {
    padding-top: 0.4rem;
  }
}