:root {
  --ink: #172033;
  --muted: #53627a;
  --line: #d9e2ec;
  --paper: #ffffff;
  --wash: #f5f8fb;
  --blue: #005d92;
  --teal: #008c8c;
  --gold: #c9902e;
  --nav: #07192e;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
}

a {
  color: var(--blue);
}

a:hover {
  color: var(--teal);
}

.site-header {
  background: var(--nav);
  color: #ffffff;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 0.85rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
}

.brand-logo,
.brand-title {
  color: #ffffff;
  text-decoration: none;
}

.brand-title {
  font-weight: 800;
}

.brand-logo img {
  display: block;
  width: 46px;
  height: 46px;
  object-fit: contain;
  background: #ffffff;
  border-radius: 6px;
  padding: 0.25rem;
}

.nav {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.nav a {
  color: #ffffff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.12rem;
  padding: 0.18rem 0;
  border-bottom: 2px solid transparent;
}

.nav a:hover,
.nav a.active {
  color: #78d9e8;
  border-color: #78d9e8;
}

.hero {
  position: relative;
  min-height: 62vh;
  display: grid;
  align-items: end;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(7, 25, 46, 0.64), rgba(7, 25, 46, 0.08)),
    url("assets/old-hero.jpg") center / cover no-repeat;
}

.hero-inner {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 5rem 0 4rem;
}

.eyebrow {
  margin: 0 0 0.85rem;
  color: var(--teal);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #9ce5eb;
}

h1,
h2,
h3 {
  line-height: 1.18;
}

h1 {
  max-width: 620px;
  margin: 0;
  color: #ffffff;
  font-size: clamp(1.55rem, 3.05vw, 2.6rem);
  font-weight: 800;
}

.hero-summary {
  max-width: 780px;
  margin: 1.35rem 0 0;
  color: #eef7fb;
  font-size: 1.2rem;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.6rem 0 0;
}

.hero-meta span,
.button {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.65rem 0.95rem;
  border-radius: 6px;
  font-weight: 800;
}

.hero-meta span {
  background: rgba(255, 255, 255, 0.16);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.button {
  width: fit-content;
  background: var(--gold);
  color: #07192e;
  text-decoration: none;
}

.button:hover {
  color: #07192e;
  background: #dfaa49;
}

.section {
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.section.alt {
  background: var(--wash);
}

.wrap {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 3.4rem 0;
}

.intro-grid,
.venue-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
  gap: 2.5rem;
  align-items: start;
}

.facts {
  display: grid;
  gap: 0.8rem;
  margin: 0;
}

.fact {
  padding: 0.95rem 1rem;
  border: 1px solid var(--line);
  border-left: 5px solid var(--teal);
  border-radius: 6px;
  background: #ffffff;
}

.fact strong {
  display: block;
  color: var(--nav);
}

h2 {
  margin: 0 0 1rem;
  color: var(--blue);
  font-size: 2rem;
}

h3 {
  margin: 0 0 0.6rem;
  color: var(--nav);
  font-size: 1.22rem;
}

p {
  margin: 0 0 1rem;
}

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.panel {
  border-left: 5px solid var(--blue);
  padding: 0.25rem 0 0.25rem 1.1rem;
}

.speaker-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
  margin-top: 1.4rem;
}

.speaker {
  min-height: 96px;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
}

.speaker strong {
  display: block;
  color: var(--nav);
}

.speaker span {
  color: var(--muted);
}

.logos {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.logos img {
  max-height: 74px;
  max-width: 190px;
  object-fit: contain;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.gallery img,
.venue-main {
  display: block;
  width: 100%;
  border-radius: 6px;
  object-fit: cover;
}

.gallery img {
  aspect-ratio: 16 / 10;
}

.venue-main {
  aspect-ratio: 16 / 9;
  margin-bottom: 1rem;
}

.note {
  color: var(--muted);
  font-size: 0.96rem;
}

.footer {
  background: var(--nav);
  color: #dce9f5;
}

.footer .wrap {
  padding: 1.6rem 0;
}

.footer a {
  color: #9ce5eb;
}

@media (max-width: 820px) {
  .topbar,
  .intro-grid,
  .venue-grid,
  .split {
    grid-template-columns: 1fr;
  }

  .topbar {
    display: grid;
  }

  .speaker-list,
  .gallery {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 68vh;
    background:
      linear-gradient(90deg, rgba(7, 25, 46, 0.66), rgba(7, 25, 46, 0.1)),
      url("assets/old-hero-mobile.jpg") center / cover no-repeat;
  }
}