:root {
  --ocean-950: #082a3c;
  --ocean-900: #0c3a52;
  --ocean-800: #145271;
  --ocean-700: #1d6b91;
  --ocean-600: #2d82ab;
  --ocean-300: #8bc7df;
  --ocean-150: #c8e7f2;
  --ocean-100: #dff1f7;
  --mist: #f2f8fa;
  --paper: #ffffff;
  --ink: #18303c;
  --muted: #5c707a;
  --signal: #e0a453;
  --line: #c9dce4;
  --radius: 0.45rem;
  --shadow: 0 18px 45px rgba(8, 42, 60, 0.11);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  min-width: 0;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(139, 199, 223, 0.28) 0, rgba(242, 248, 250, 0.72) 19rem, var(--mist) 32rem),
    var(--mist);
  font-family: "Manrope", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.75;
}

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

a {
  color: var(--ocean-700);
  text-decoration-color: rgba(29, 107, 145, 0.35);
  text-underline-offset: 0.18em;
}

a:hover { color: var(--ocean-900); }

.skip-link {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 100;
  padding: 0.6rem 0.9rem;
  color: var(--paper);
  background: var(--ocean-950);
  transform: translateY(-180%);
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  border-top: 0.35rem solid var(--ocean-950);
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 1px 0 var(--line);
}

.utility-bar {
  color: var(--ocean-100);
  background: var(--ocean-900);
  font-size: 0.78rem;
  letter-spacing: 0.045em;
}

.utility-inner,
.nav-frame,
.notice-inner,
.site-main,
.footer-inner {
  width: min(100% - 2rem, 74rem);
  min-width: 0;
  margin-inline: auto;
}

.utility-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.3rem 1.2rem;
  padding-block: 0.34rem;
}

.utility-links {
  display: flex;
  min-width: 0;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  list-style: none;
}

.utility-links a {
  color: var(--ocean-100);
  text-decoration: none;
}

.nav-frame {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-block: 1rem;
}

.site-brand {
  display: inline-flex;
  min-width: max-content;
  align-items: center;
  gap: 0.72rem;
  color: var(--ocean-950);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 2.55rem;
  height: 2.55rem;
  border: 1px solid var(--ocean-300);
  border-radius: 50%;
  place-items: center;
  background: radial-gradient(circle at 36% 30%, var(--paper) 0 11%, var(--ocean-300) 12% 22%, var(--ocean-700) 23% 100%);
  box-shadow: inset 0 0 0 0.25rem var(--ocean-100);
  font: 700 1rem/1 "Newsreader", Georgia, serif;
  color: var(--paper);
}

.brand-copy { line-height: 1.05; }

.brand-copy strong {
  display: block;
  font: 700 1.36rem/1 "Newsreader", Georgia, serif;
  letter-spacing: -0.025em;
}

.brand-copy small {
  display: block;
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.primary-links {
  display: flex;
  min-width: 0;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.32rem;
  list-style: none;
}

.primary-links a {
  display: block;
  padding: 0.46rem 0.65rem;
  border-bottom: 2px solid transparent;
  color: var(--ocean-900);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.015em;
  text-decoration: none;
  white-space: normal;
}

.primary-links a:hover,
.primary-links a[aria-current="page"] {
  border-color: var(--signal);
  color: var(--ocean-950);
  background: var(--mist);
}

.independence-strip {
  border-block: 1px solid #b5d4e0;
  color: var(--ocean-900);
  background: var(--ocean-100);
  font-size: 0.78rem;
}

.notice-inner {
  padding-block: 0.52rem;
  font-weight: 650;
  text-align: center;
}

.site-main {
  padding-block: clamp(1.7rem, 4vw, 3.5rem);
}

.editorial-grid {
  display: grid;
  min-width: 0;
  grid-template-columns: minmax(0, 1fr) minmax(15rem, 18rem);
  gap: clamp(1.3rem, 3vw, 2.5rem);
  align-items: start;
}

.article-panel,
.sidebar-module {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.article-panel {
  padding: clamp(1.25rem, 4vw, 3.15rem);
  box-shadow: var(--shadow);
}

.article-panel::before {
  display: block;
  width: 4.5rem;
  height: 0.28rem;
  margin-bottom: 1.35rem;
  background: linear-gradient(90deg, var(--ocean-700) 0 65%, var(--signal) 65% 100%);
  content: "";
}

.page-content { min-width: 0; }

.page-content h1,
.page-content h2,
.page-content h3,
.error-copy h1 {
  color: var(--ocean-950);
  font-family: "Newsreader", Georgia, serif;
  font-weight: 700;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.page-content h1,
.error-copy h1 {
  max-width: 18ch;
  margin: 0 0 1rem;
  font-size: clamp(2.35rem, 6vw, 4.65rem);
  line-height: 0.98;
}

.page-content h2 {
  margin: 2.4rem 0 0.7rem;
  padding-top: 0.25rem;
  border-top: 1px solid var(--line);
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  line-height: 1.15;
}

.page-content h3 {
  margin: 1.7rem 0 0.45rem;
  font-size: 1.25rem;
}

.page-content p,
.page-content li { max-width: 72ch; }

.page-content p { margin-bottom: 1.05rem; }

.page-content li + li { margin-top: 0.45rem; }

.page-content em { color: #334d59; }

.site-notice {
  max-width: 74ch !important;
  margin: 0 0 1.4rem !important;
  padding: 0.78rem 1rem;
  border-left: 0.24rem solid var(--signal);
  color: #314d5a;
  background: #fff8ec;
  font-size: 0.9rem;
  font-weight: 700;
}

.feature-visual {
  margin: 1.5rem 0 2rem;
}

.feature-visual figure,
.visual-grid figure {
  margin: 0;
}

.feature-visual img,
.visual-grid img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0.25rem;
  background: var(--ocean-100);
  object-fit: cover;
}

.feature-visual img { aspect-ratio: 16 / 9; }

.visual-grid {
  display: grid;
  margin: 1.5rem 0 2rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.visual-grid figure:first-child { grid-column: 1 / -1; }

.visual-grid img { aspect-ratio: 3 / 2; }

.feature-visual figcaption,
.visual-grid figcaption {
  padding: 0.5rem 0.15rem 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.section-index {
  display: grid;
  margin: 1.35rem 0 2rem;
  padding: 0;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
  list-style: none;
}

.section-index a {
  display: block;
  height: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--line);
  border-left: 0.22rem solid var(--ocean-300);
  border-radius: 0.25rem;
  background: var(--mist);
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
}

.sidebar-stack {
  display: grid;
  min-width: 0;
  gap: 1rem;
}

.sidebar-module { overflow: hidden; }

.sidebar-module h2 {
  margin: 0;
  padding: 0.72rem 0.9rem;
  color: var(--paper);
  background: var(--ocean-800);
  font: 700 1.04rem/1.2 "Newsreader", Georgia, serif;
  letter-spacing: 0.01em;
}

.sidebar-module ul {
  margin: 0;
  padding: 0.4rem 0.9rem 0.7rem;
  list-style: none;
}

.sidebar-module li { border-bottom: 1px dotted var(--line); }

.sidebar-module li:last-child { border: 0; }

.sidebar-module a {
  display: block;
  padding: 0.53rem 0;
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.4;
  text-decoration: none;
}

.sidebar-copy {
  margin: 0;
  padding: 0.95rem;
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.65;
}

.signal-label {
  display: inline-block;
  margin-bottom: 0.35rem;
  color: #76501e;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.site-footer {
  margin-top: 1rem;
  color: #d8ebf2;
  background:
    linear-gradient(105deg, rgba(29, 107, 145, 0.24), transparent 55%),
    var(--ocean-950);
}

.footer-inner { padding-block: 2.25rem; }

.footer-notice {
  margin: 0 0 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(216, 235, 242, 0.23);
  color: var(--paper);
  font-size: 0.86rem;
  font-weight: 700;
}

.footer-links {
  display: flex;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
  gap: 0.35rem 1.25rem;
  list-style: none;
}

.footer-links a {
  color: var(--ocean-100);
  font-size: 0.8rem;
  text-decoration: none;
}

.footer-meta {
  display: flex;
  margin-top: 1.3rem;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  color: #a9c8d4;
  font-size: 0.74rem;
}

.error-panel {
  display: grid;
  min-height: 55vh;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  place-items: center;
  background:
    radial-gradient(circle at 18% 24%, var(--ocean-150), transparent 28%),
    linear-gradient(135deg, var(--paper), var(--mist));
  box-shadow: var(--shadow);
}

.error-copy {
  width: min(100% - 2rem, 44rem);
  padding: 3rem 0;
  text-align: center;
}

.error-code {
  display: block;
  margin-bottom: 0.7rem;
  color: var(--ocean-700);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.return-link {
  display: inline-block;
  margin-top: 0.7rem;
  padding: 0.65rem 1rem;
  border: 1px solid var(--ocean-700);
  border-radius: 0.25rem;
  color: var(--paper);
  background: var(--ocean-700);
  font-weight: 800;
  text-decoration: none;
}

.return-link:hover {
  color: var(--paper);
  background: var(--ocean-900);
}

@media (max-width: 62rem) {
  .nav-frame { align-items: flex-start; flex-direction: column; }
  .primary-links { justify-content: flex-start; }
  .editorial-grid { grid-template-columns: minmax(0, 1fr); }
  .sidebar-stack { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 42rem) {
  .utility-inner { display: block; }
  .utility-inner > span { display: block; margin-bottom: 0.25rem; }
  .primary-links { gap: 0.12rem; }
  .primary-links a { padding: 0.42rem 0.48rem; font-size: 0.76rem; }
  .section-index,
  .sidebar-stack,
  .visual-grid { grid-template-columns: minmax(0, 1fr); }
  .visual-grid figure:first-child { grid-column: auto; }
  .article-panel { padding-inline: 1.1rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; }
}

@media print {
  body { background: #fff; }
  .article-panel { border: 0; box-shadow: none; }
  .editorial-grid { display: block; }
}