:root { --bg: #000; --text: #FFFFFF; --muted: #666; --line: #eaeaea; --radius: 12px; --speed: 160ms; }
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: "Noto Sans", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { width: min(1100px, 92vw); margin: 0 auto; }

.site-header { position: sticky; top: 0; backdrop-filter: saturate(180%) blur(8px); background: #2596be; border-bottom: 1px solid var(--line); z-index: 10; }
.site-header .brand { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: 0.2px; padding: 14px 0; }
.brand-text { font-family: "Space Mono", monospace; }
.brand-mark { color: var(--text); }
.site-header .site-nav { display: flex; gap: 18px; }
.site-header, .site-footer .footer-inner { display: flex; align-items: center; justify-content: space-between; padding: 0 4vw; }

.nav-link { padding: 10px 12px; border-radius: 8px; transition: background var(--speed), transform var(--speed); }
.nav-link:hover { background: #f5f5f5; }
.nav-link.active { background: #111; color: #fff; }

.hero { padding: 12vh 0 10vh; border-bottom: 1px solid var(--line); }
.hero-inner { width: min(900px, 92vw); margin: 0 auto; }
.hero-title { font-size: clamp(32px, 5vw, 56px); line-height: 1.05; margin: 0 0 14px; letter-spacing: -0.02em; }
.hero-subtitle { font-size: clamp(16px, 2.2vw, 22px); color: var(--muted); margin: 0 0 24px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

.button { display: inline-flex; align-items: center; justify-content: center; padding: 12px 18px; border: 1px solid #111; border-radius: 10px; font-weight: 600; transition: transform var(--speed), background var(--speed), color var(--speed); }
.button:hover { transform: translateY(-1px); background: #111; color: #fff; }
.link { padding: 12px 0; text-decoration: underline; text-underline-offset: 4px; }

.section { padding: 64px 0; }
.section-title { font-size: clamp(24px, 3.2vw, 32px); margin: 0 0 18px; }
.muted { color: var(--muted); margin: 0 0 22px; }

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; transition: transform var(--speed), box-shadow var(--speed); }
.feature-card:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.06); }

.highlights { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.highlight { border: 1px dashed var(--line); border-radius: var(--radius); padding: 16px; }

.gallery-grid { margin-top: 18px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.tile { position: relative; overflow: hidden; border-radius: 10px; border: 1px solid var(--line); }
.tile img { width: 100%; height: 240px; object-fit: cover; transform: scale(1.01); transition: transform 220ms ease; }
.tile:hover img { transform: scale(1.055); }

.site-footer { border-top: 1px solid var(--line); padding: 28px 0; margin-top: 32px; }
.footer-inner { gap: 12px; }
.footer-nav { display: flex; gap: 14px; }

@media (max-width: 900px) {
  .features, .highlights, .gallery-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .features, .highlights, .gallery-grid { grid-template-columns: 1fr; }
  .tile img { height: 220px; }
}

.committee-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.committee-list li {
  background: rgba(255, 255, 255, 0.05);
  padding: 10px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

@media (max-width: 640px) {
  .committee-list {
    grid-template-columns: 1fr;
  }
}