:root {
  --bg: #f7f4ec;
  --surface: #fffdf7;
  --ink: #1e2328;
  --muted: #5f6a72;
  --line: #d5c8ac;
  --accent: #c2432c;
  --accent-strong: #8f2614;
  --hero-a: #f4e4bf;
  --hero-b: #f8f0de;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  /* Keep a stable layout width even when page height changes across sections. */
  scrollbar-gutter: stable;
}

body {
  margin: 0;
  font-family: "Barlow", "Noto Sans SC", sans-serif;
  color: var(--ink);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(circle at 10% 5%, #f0e5c8 0%, transparent 40%),
    radial-gradient(circle at 85% 15%, #efe3c0 0%, transparent 32%),
    var(--bg);
  line-height: 1.6;
  overflow-y: scroll;
}

main {
  flex: 1;
}

a {
  color: var(--accent-strong);
}

.inner {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(8px);
  background: color-mix(in srgb, var(--surface) 84%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand {
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.main-nav {
  margin-left: auto;
  display: flex;
  gap: 0.85rem;
  align-items: center;
  flex-wrap: wrap;
}

.main-nav a {
  text-decoration: none;
  font-weight: 500;
  color: var(--ink);
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}

.main-nav a:hover,
.main-nav a[aria-current="true"] {
  border-color: var(--accent);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 0.35rem 0.6rem;
  border-radius: 8px;
}

.lang-toggle {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
}

.section {
  padding: 4rem 0;
}

.hero {
  padding: 5rem 0 4rem;
  background: linear-gradient(125deg, var(--hero-a), var(--hero-b));
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--accent-strong);
  font-weight: 700;
}

h1,
h2,
h3 {
  line-height: 1.2;
}

h1 {
  margin: 0.55rem 0 0.85rem;
  font-size: clamp(1.9rem, 4vw, 3.1rem);
}

h2 {
  margin-top: 0;
  font-size: clamp(1.4rem, 2.7vw, 2.1rem);
}

.hero-text {
  max-width: 68ch;
  color: #2a353d;
}

.btn-primary {
  display: inline-block;
  margin-top: 1rem;
  text-decoration: none;
  background: var(--accent);
  color: #fff;
  padding: 0.68rem 1rem;
  border-radius: 10px;
  font-weight: 700;
}

.section-lead {
  max-width: 78ch;
  color: var(--muted);
  padding-inline: 1rem;
}

.section-content {
  display: grid;
  gap: 1rem;
  margin-top: 1.25rem;
}

.content-block {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem 1rem 1.1rem;
}

.content-block h2,
.content-block h3 {
  margin: 0.1rem 0 0.8rem;
}

.content-block ul {
  margin-top: 0.2rem;
  padding-left: 1.1rem;
}

.content-block li + li {
  margin-top: 0.3rem;
}

#organizersContent img {
  display: block;
  width: min(180px, 100%);
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid var(--line);
  margin: 0.2rem 0 0.8rem;
}

.placeholder {
  border-top: 1px dashed var(--line);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.2rem 0 1.8rem;
  background: color-mix(in srgb, var(--surface) 90%, transparent);
}

.site-footer .inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

@media (max-width: 920px) {
  .nav-toggle {
    display: inline-block;
    margin-left: auto;
  }

  .main-nav {
    display: none;
    width: 100%;
    margin: 0;
    padding: 0.4rem 0 0.2rem;
    border-top: 1px solid var(--line);
  }

  .main-nav.open {
    display: flex;
  }

  .header-inner {
    flex-wrap: wrap;
    padding: 0.8rem 0;
  }
}

@media (max-width: 560px) {
  .section {
    padding: 3rem 0;
  }

  .hero {
    padding-top: 3.8rem;
  }

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