:root {
  --bg: #f7f8fb;
  --bg-soft: #edf1f5;
  --surface: #ffffff;
  --surface-strong: #fbfcfd;
  --surface-warm: #eef3f7;
  --text: #141c2b;
  --muted: #4f5f70;
  --line: #d4dce6;
  --accent: #2b6770;
  --accent-strong: #174f5a;
  --highlight: #865415;
  --shadow: 0 1px 2px rgba(20, 28, 43, 0.08), 0 10px 22px rgba(20, 28, 43, 0.04);
  --radius-lg: 10px;
  --radius-md: 6px;
  --radius-sm: 4px;
  --content-width: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background: var(--bg);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.65;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(23, 79, 90, 0.06) 1px, transparent 1px);
  background-size: 100% 4.5rem;
  opacity: 0.28;
}

a {
  color: inherit;
}

p,
li {
  color: var(--muted);
}

.page-shell {
  position: relative;
  width: min(100% - 2rem, var(--content-width));
  margin: 0 auto;
  padding: 0.9rem 0 4rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 0;
  margin: 0 auto 1.25rem;
  background: rgba(247, 248, 251, 0.92);
  border: 1px solid var(--line);
  border-width: 0 0 1px;
  border-radius: 0;
  backdrop-filter: blur(14px);
  box-shadow: none;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.brand-mark {
  width: 0.72rem;
  height: 0.72rem;
  border-radius: 2px;
  background: var(--accent-strong);
  box-shadow: 0 0 0 3px rgba(23, 79, 90, 0.12);
}

.brand-copy {
  display: grid;
  gap: 0.05rem;
  font-size: 0.82rem;
  color: var(--muted);
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
}

.brand-copy strong {
  color: var(--text);
  font-size: 0.94rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 1rem;
}

.site-nav a {
  text-decoration: none;
  color: var(--muted);
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
}

.section {
  padding: 3rem 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.38fr) minmax(320px, 0.9fr);
  gap: 1.15rem;
  align-items: stretch;
  min-height: 48vh;
}

.hero-copy,
.hero-panel,
.notice-strip,
.organizer-card,
.longform,
.side-card,
.info-card,
.timeline-item {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-copy {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  padding: clamp(1.7rem, 3.5vw, 3rem);
  border-top: 4px solid var(--accent-strong);
}

.hero-copy::after {
  content: "";
  position: absolute;
  left: clamp(1.7rem, 3.5vw, 3rem);
  right: clamp(1.7rem, 3.5vw, 3rem);
  bottom: 1.1rem;
  height: 1px;
  background: var(--line);
  opacity: 1;
}

.eyebrow {
  margin: 0 0 1rem;
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--accent-strong);
}

.hero h1,
.section-heading h2 {
  margin: 0;
  font-family: "Instrument Serif", Georgia, serif;
  line-height: 1.05;
  font-weight: 400;
}

.hero h1 {
  max-width: 11ch;
  font-size: clamp(3rem, 6.8vw, 5.35rem);
}

.hero-tagline {
  margin: 0.8rem 0 1rem;
  font-family: "Instrument Serif", Georgia, serif;
  font-size: clamp(1.35rem, 2.2vw, 1.9rem);
  font-style: italic;
  color: var(--highlight);
}

.hero-body {
  max-width: 60ch;
  margin: 0;
  font-size: 1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.55rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.65rem;
  padding: 0.68rem 0.95rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button-primary {
  color: #ffffff;
  background: var(--accent-strong);
}

.button-secondary {
  color: var(--text);
  border-color: var(--accent-strong);
  background: transparent;
}

.hero-panel {
  display: grid;
  gap: 0.75rem;
  align-content: start;
  border-radius: var(--radius-lg);
  padding: 0.9rem;
}

.fact-card {
  padding: 0.9rem 0.95rem;
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--line);
}

.fact-label,
.timeline-label {
  display: block;
  margin-bottom: 0.4rem;
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-strong);
}

.fact-card strong,
.timeline-item strong {
  display: block;
  font-size: 1.03rem;
  color: var(--text);
}

.fact-card a,
.side-card a {
  color: var(--accent-strong);
  text-decoration-color: rgba(22, 78, 99, 0.32);
  text-underline-offset: 0.18em;
}

.fact-detail {
  display: block;
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.notice-strip {
  margin-top: 0.85rem;
  padding: 0.95rem 1.15rem;
  border-radius: var(--radius-md);
}

.notice-strip p {
  margin: 0;
  color: var(--muted);
}

.section-heading {
  max-width: 48rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--line);
}

.section-heading h2 {
  font-size: clamp(1.9rem, 4vw, 2.75rem);
}

.section-heading p {
  margin: 0.8rem 0 0;
  font-size: 1rem;
}

.organizer-grid,
.card-grid,
.timeline {
  display: grid;
  gap: 0.95rem;
}

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

.organizer-card,
.info-card,
.side-card,
.timeline-item {
  border-radius: var(--radius-md);
  padding: 1.1rem;
}

.organizer-card h3,
.info-card h3,
.side-card h3 {
  margin: 0 0 0.65rem;
  color: var(--text);
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  font-size: 1.04rem;
  font-weight: 600;
  line-height: 1.3;
}

.organizer-card p,
.info-card p,
.side-card p,
.timeline-item p {
  margin: 0;
}

.content-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.8fr);
  gap: 1rem;
}

.longform {
  border-radius: var(--radius-lg);
  padding: clamp(1.35rem, 2.5vw, 1.8rem);
}

.longform p {
  margin: 0 0 1rem;
  font-size: 1rem;
}

.longform p:last-child {
  margin-bottom: 0;
}

.side-stack {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.95rem;
}

.topic-column {
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.topic-list {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 0.72rem;
}

.topic-list li::marker {
  color: var(--highlight);
}

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

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

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

.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 1.42rem;
  height: 1px;
  background: var(--line);
  opacity: 1;
}

.timeline-item {
  position: relative;
  padding-top: 2rem;
}

.timeline-item::before {
  content: "";
  position: absolute;
  top: 1.18rem;
  left: 1.1rem;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 2px;
  background: var(--accent-strong);
  box-shadow: none;
}

.site-footer {
  padding-top: 2rem;
  text-align: center;
}

.site-footer p {
  margin: 0;
  color: var(--muted);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 520ms ease,
    transform 520ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  .hero,
  .content-layout,
  .organizer-grid,
  .four-up,
  .timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .topic-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    min-height: unset;
  }
}

@media (max-width: 760px) {
  .page-shell {
    width: min(100% - 1rem, var(--content-width));
  }

  .site-header {
    position: static;
    flex-direction: column;
    align-items: stretch;
    border-radius: 0;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .section {
    padding: 2.8rem 0;
  }

  .hero,
  .content-layout,
  .organizer-grid,
  .four-up,
  .two-up,
  .timeline {
    grid-template-columns: 1fr;
  }

  .notice-strip {
    border-radius: var(--radius-md);
  }

  .timeline::before {
    left: 1.54rem;
    right: auto;
    top: 0;
    bottom: 0;
    width: 1px;
    height: auto;
  }

  .timeline-item {
    padding-top: 1.35rem;
    padding-left: 2.8rem;
  }

  .timeline-item::before {
    top: 1.4rem;
    left: 1.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .button {
    transition: none;
  }
}