@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@500;600;700&family=Source+Sans+3:wght@400;500;600;700&display=swap');

:root {
  --ink-900: #102331;
  --ink-700: #214253;
  --ink-500: #3d5f71;
  --sand-100: #f6efe3;
  --sand-200: #e8dcc8;
  --sea-100: #d9e8ee;
  --sea-400: #3d748b;
  --copper: #b65f43;
  --copper-dark: #934029;
  --white: #ffffff;
  --shadow: 0 14px 40px rgba(16, 35, 49, 0.18);
  --radius-xl: 24px;
  --radius-lg: 16px;
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: 'Source Sans 3', 'Segoe UI', sans-serif;
  color: var(--ink-900);
  background: linear-gradient(160deg, var(--sea-100) 0%, var(--sand-100) 46%, #f7f3ea 100%);
  line-height: 1.55;
}

.bg-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 15% 12%, rgba(182, 95, 67, 0.08) 0, rgba(182, 95, 67, 0) 28%),
    radial-gradient(circle at 82% 18%, rgba(33, 66, 83, 0.1) 0, rgba(33, 66, 83, 0) 30%),
    repeating-linear-gradient(
      120deg,
      rgba(255, 255, 255, 0.12) 0,
      rgba(255, 255, 255, 0.12) 2px,
      rgba(255, 255, 255, 0) 2px,
      rgba(255, 255, 255, 0) 22px
    );
  z-index: -1;
}

.shell {
  width: min(1100px, calc(100% - 2.4rem));
  margin: 0 auto;
}

.topbar {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0 0.8rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  text-decoration: none;
}

.brand-mark {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.85rem;
  display: grid;
  place-items: center;
  background: linear-gradient(160deg, var(--ink-900), var(--sea-400));
  color: var(--white);
  font-weight: 700;
}

.brand-text strong {
  display: block;
  color: var(--ink-900);
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 1.5rem;
  line-height: 1;
}

.brand-text small {
  color: var(--ink-500);
  font-size: 0.86rem;
}

.quick-nav {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.quick-link {
  text-decoration: none;
  padding: 0.45rem 0.72rem;
  border-radius: 999px;
  color: var(--ink-700);
  border: 1px solid rgba(16, 35, 49, 0.14);
  background: rgba(255, 255, 255, 0.7);
  font-size: 0.92rem;
  transition: 180ms ease;
}

.quick-link:hover,
.quick-link.active {
  background: var(--ink-900);
  color: var(--white);
  border-color: var(--ink-900);
}

.menu-toggle {
  border: 0;
  background: linear-gradient(160deg, var(--copper), var(--copper-dark));
  color: var(--white);
  padding: 0.56rem 0.9rem;
  border-radius: 0.7rem;
  font-weight: 600;
  cursor: pointer;
}

.topic-panel {
  background: rgba(255, 255, 255, 0.94);
  border-top: 1px solid rgba(16, 35, 49, 0.12);
  border-bottom: 1px solid rgba(16, 35, 49, 0.12);
  box-shadow: var(--shadow);
}

.panel-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1rem;
  padding: 1.1rem 0;
}

.panel-group h3 {
  margin: 0 0 0.55rem;
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 1.36rem;
  color: var(--ink-900);
}

.panel-group ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}

.panel-link {
  color: var(--ink-700);
  text-decoration: none;
}

.panel-link:hover,
.panel-link.active {
  color: var(--copper-dark);
  text-decoration: underline;
}

.page-wrap {
  padding: 1rem 0 2.4rem;
}

.article {
  display: grid;
  gap: 1rem;
}

.hero {
  color: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  padding: clamp(1.4rem, 2.8vw, 2.3rem);
  min-height: 300px;
  display: grid;
  align-content: end;
  gap: 0.52rem;
  background-size: cover;
  background-position: center;
  animation: heroIn 620ms ease both;
}

.kicker {
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
  margin: 0;
  opacity: 0.94;
}

h1,
h2,
h3 {
  font-family: 'Cormorant Garamond', Georgia, serif;
  line-height: 1.08;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.2rem);
}

.lead {
  margin: 0;
  max-width: 72ch;
  font-size: 1.05rem;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  font-size: 0.88rem;
  opacity: 0.93;
}

.meta-row span {
  background: rgba(255, 255, 255, 0.18);
  padding: 0.25rem 0.52rem;
  border-radius: 999px;
}

.content-section {
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(2px);
  border: 1px solid rgba(16, 35, 49, 0.1);
  border-radius: var(--radius-lg);
  padding: clamp(1rem, 2vw, 1.3rem);
  animation: riseIn 420ms ease both;
}

.content-section h2 {
  margin: 0 0 0.68rem;
  font-size: clamp(1.55rem, 3.4vw, 2rem);
  color: var(--ink-900);
}

.content-section p {
  margin: 0.44rem 0;
  color: var(--ink-900);
}

.content-section ul {
  margin: 0.65rem 0 0;
  padding-left: 1.2rem;
}

.content-section li {
  margin: 0.22rem 0;
}

.highlights {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.8rem;
}

.highlight-card {
  border-radius: 0.9rem;
  border: 1px solid rgba(16, 35, 49, 0.11);
  padding: 0.8rem;
  background: linear-gradient(180deg, #fffefb, #f3eadb);
}

.highlight-card h3 {
  margin: 0;
  font-size: 1.4rem;
}

.highlight-card p {
  margin: 0.5rem 0;
}

.highlight-card a {
  color: var(--ink-900);
  font-weight: 600;
}

.link-list {
  list-style: none;
  padding-left: 0;
}

.link-list li {
  margin: 0.38rem 0;
}

.link-list a {
  color: var(--ink-700);
}

.link-list span {
  display: inline-block;
  margin-left: 0.45rem;
  color: var(--ink-500);
  font-size: 0.88rem;
}

.license-note {
  margin: 0.3rem 0 0;
  font-size: 0.84rem;
  color: var(--ink-500);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem;
  padding: 1rem 0 2.2rem;
  color: var(--ink-700);
  font-size: 0.91rem;
}

.footer-inner p {
  margin: 0;
}

@keyframes heroIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 880px) {
  .topbar {
    grid-template-columns: 1fr auto;
  }

  .quick-nav {
    display: none;
  }
}

@media (max-width: 640px) {
  .shell {
    width: min(1100px, calc(100% - 1.4rem));
  }

  .panel-inner {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 250px;
  }

  .footer-inner {
    flex-direction: column;
  }
}