:root {
  color-scheme: light;
  --ink: #16202a;
  --muted: #596773;
  --line: #dce3e8;
  --canvas: #f4f7f8;
  --surface: #ffffff;
  --brand: #1769aa;
  --brand-deep: #124e7d;
  --teal: #117f78;
  --coral: #bd5b43;
  --max: 1180px;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--surface); }
body, button, a { letter-spacing: 0; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.shell { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 100; padding: 10px 14px; background: var(--ink); color: white; }
.skip-link:focus { top: 12px; }

.site-header { position: sticky; top: 0; z-index: 50; border-bottom: 1px solid rgba(220, 227, 232, .9); background: rgba(255, 255, 255, .94); backdrop-filter: blur(12px); }
.header-inner { display: flex; min-height: 68px; align-items: center; justify-content: space-between; gap: 30px; }
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 0; }
.brand img { width: 49px; height: 31px; }
.brand-copy { display: grid; gap: 3px; }
.brand-copy strong { font-size: 18px; line-height: 1; }
.brand-copy span { color: var(--muted); font-size: 11px; }
.primary-nav { display: flex; align-items: stretch; gap: 10px; }
.primary-nav a { position: relative; padding: 24px 18px 22px; color: #42515e; font-size: 14px; }
.primary-nav a:hover, .primary-nav a[aria-current="page"] { color: var(--brand); }
.primary-nav a[aria-current="page"]::after { position: absolute; right: 17px; bottom: 0; left: 17px; height: 3px; background: var(--brand); content: ""; }
.menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: white; color: var(--ink); font-size: 21px; }

.hero { position: relative; min-height: 520px; overflow: hidden; background: #0d2b3c; color: white; }
.hero-media { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 55%; }
.hero::after { position: absolute; inset: 0; background: rgba(4, 28, 43, .66); content: ""; }
.hero-content { position: relative; z-index: 1; display: flex; min-height: 520px; flex-direction: column; align-items: flex-start; justify-content: center; padding: 56px 0 76px; }
.eyebrow { margin: 0 0 18px; color: #9de5dd; font-size: 13px; font-weight: 700; }
.hero h1 { max-width: 720px; margin: 0; font-size: 54px; line-height: 1.12; }
.hero p { max-width: 650px; margin: 22px 0 0; color: rgba(255, 255, 255, .86); font-size: 18px; line-height: 1.9; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; border: 1px solid transparent; padding: 0 20px; background: var(--brand); color: white; font-size: 14px; font-weight: 700; }
.button:hover { background: var(--brand-deep); }
.button.secondary { border-color: rgba(255, 255, 255, .62); background: rgba(255, 255, 255, .08); }
.button.secondary:hover { background: rgba(255, 255, 255, .18); }

.section { padding: 72px 0; }
.section.soft { border-block: 1px solid var(--line); background: var(--canvas); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 28px; }
.section-heading h2 { margin: 0; font-size: 30px; line-height: 1.2; }
.section-heading p { max-width: 640px; margin: 10px 0 0; color: var(--muted); line-height: 1.8; }
.text-link { color: var(--brand); font-size: 14px; font-weight: 700; white-space: nowrap; }

.event-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.event-card { overflow: hidden; border: 1px solid var(--line); border-radius: 8px; background: white; }
.event-card img { width: 100%; height: 220px; object-fit: cover; }
.event-body { padding: 20px; }
.event-meta { display: flex; flex-wrap: wrap; gap: 8px 12px; color: var(--teal); font-size: 12px; font-weight: 700; }
.event-card h3 { margin: 12px 0 0; font-size: 19px; line-height: 1.45; }
.event-card p { margin: 10px 0 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.event-card footer { display: flex; justify-content: space-between; gap: 12px; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.event-card--wide { display: grid; grid-template-columns: 320px minmax(0, 1fr); }
.event-card--wide img { height: 100%; aspect-ratio: auto; }
.event-card--wide .event-body { padding: 24px; }
.event-list { display: grid; gap: 18px; }

.value-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 1px solid var(--line); background: white; }
.value-item { min-height: 190px; padding: 28px; border-right: 1px solid var(--line); }
.value-item:last-child { border-right: 0; }
.value-index { color: var(--coral); font-size: 13px; font-weight: 800; }
.value-item h3 { margin: 36px 0 10px; font-size: 21px; }
.value-item p { margin: 0; color: var(--muted); line-height: 1.8; }

.page-hero { border-bottom: 1px solid var(--line); background: var(--canvas); }
.page-hero-inner { display: grid; grid-template-columns: minmax(0, .9fr) minmax(360px, 1.1fr); align-items: center; gap: 54px; min-height: 370px; padding-block: 46px; }
.page-hero h1 { margin: 0; font-size: 46px; }
.page-hero p { margin: 18px 0 0; color: var(--muted); font-size: 17px; line-height: 1.9; }
.page-hero img { width: 100%; height: 280px; object-fit: cover; border-radius: 8px; }

.timeline { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 2px solid var(--brand); }
.timeline article { padding: 24px 24px 0 0; }
.timeline time { color: var(--brand); font-size: 13px; font-weight: 800; }
.timeline h3 { margin: 10px 0 6px; font-size: 17px; }
.timeline p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.7; }
.gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.gallery figure { margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 8px; background: white; }
.gallery img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.gallery figcaption { padding: 13px 15px; color: var(--muted); font-size: 13px; }
.contact-band { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 30px; border-left: 5px solid var(--teal); background: #ecf6f4; }
.contact-band h2 { margin: 0; font-size: 23px; }
.contact-band p { margin: 8px 0 0; color: var(--muted); line-height: 1.7; }

.site-footer { border-top: 1px solid var(--line); background: #12202b; color: rgba(255, 255, 255, .78); }
.footer-main { display: grid; grid-template-columns: 1.2fr .8fr .8fr; gap: 50px; padding: 42px 0; }
.footer-main h2 { margin: 0 0 14px; color: white; font-size: 15px; }
.footer-main p, .footer-main a { margin: 0; font-size: 13px; line-height: 2; }
.footer-nav { display: grid; align-content: start; gap: 3px; }
.footer-nav a:hover, .record:hover { color: white; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 22px; padding: 16px 0; border-top: 1px solid rgba(255, 255, 255, .12); font-size: 12px; }
.records { display: flex; flex-wrap: wrap; gap: 10px 18px; }

@media (max-width: 860px) {
  .event-grid { grid-template-columns: 1fr; }
  .event-card--wide { grid-template-columns: 240px minmax(0, 1fr); }
  .value-grid { grid-template-columns: 1fr; }
  .value-item { border-right: 0; border-bottom: 1px solid var(--line); }
  .value-item:last-child { border-bottom: 0; }
  .page-hero-inner { grid-template-columns: 1fr; gap: 28px; }
  .timeline { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gallery { grid-template-columns: 1fr 1fr; }
  .footer-main { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .shell { width: min(100% - 28px, var(--max)); }
  .header-inner { min-height: 62px; }
  .brand img { width: 44px; }
  .brand-copy strong { font-size: 16px; }
  .menu-toggle { display: grid; place-items: center; }
  .primary-nav { position: absolute; right: 0; top: 62px; left: 0; display: none; border-bottom: 1px solid var(--line); background: white; padding: 8px 14px 14px; box-shadow: 0 12px 24px rgba(23, 36, 47, .12); }
  .primary-nav.open { display: grid; }
  .primary-nav a { padding: 13px 12px; }
  .primary-nav a[aria-current="page"]::after { top: 10px; right: auto; bottom: 10px; left: 0; width: 3px; height: auto; }
  .hero, .hero-content { min-height: 470px; }
  .hero h1 { font-size: 39px; }
  .hero p { font-size: 16px; line-height: 1.75; }
  .section { padding: 52px 0; }
  .section-heading { align-items: start; flex-direction: column; }
  .section-heading h2 { font-size: 26px; }
  .event-card--wide { display: block; }
  .event-card--wide img { width: 100%; height: 210px; }
  .page-hero-inner { min-height: 0; padding-block: 40px; }
  .page-hero h1 { font-size: 36px; }
  .page-hero img { height: 220px; }
  .timeline, .gallery { grid-template-columns: 1fr; }
  .contact-band { align-items: flex-start; flex-direction: column; padding: 24px; }
  .footer-main { grid-template-columns: 1fr; gap: 28px; }
}

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