:root {
  color-scheme: light;
  --orange: #f07800;
  --orange-dark: #f07800;
  --navy: #06265d;
  --blue: #0d76bd;
  --sky: #e9f6fb;
  --mist: #f5fbfd;
  --ink: #102033;
  --muted: #5c6b7c;
  --line: rgba(6, 38, 93, 0.14);
  --shadow: 0 24px 70px rgba(6, 38, 93, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 88% 6%, rgba(13, 118, 189, 0.18), transparent 28rem),
    linear-gradient(180deg, #f7fcff 0%, #ffffff 42%, #f7fbfd 100%);
  color: var(--ink);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  overflow-x: hidden;
}

a {
  color: inherit;
}

.site-header {
  align-items: center;
  backdrop-filter: blur(18px);
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  left: 0;
  padding: 18px clamp(20px, 5vw, 72px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  align-items: center;
  display: flex;
  gap: 12px;
  text-decoration: none;
}

.brand-logo {
  display: block;
  height: 42px;
  object-fit: contain;
  object-position: left center;
  width: 76px;
}

.brand span {
  color: var(--navy);
  font-size: 0.88rem;
  font-weight: 700;
  line-height: 1.15;
}

nav {
  display: flex;
  gap: clamp(14px, 3vw, 34px);
}

nav a {
  color: var(--navy);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
}

.hero,
.section,
.quick-facts,
.registration,
footer {
  margin-inline: auto;
  max-width: 1180px;
  width: min(calc(100% - 40px), 1180px);
}

.hero {
  align-items: center;
  background:
    linear-gradient(90deg, rgba(247, 252, 255, 0.98) 0%, rgba(247, 252, 255, 0.9) 34%, rgba(247, 252, 255, 0.36) 72%),
    url("assets/orange-dialogues-backdrop.png") right center / auto 100% no-repeat;
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: clamp(32px, 6vw, 72px);
  grid-template-columns: minmax(0, 760px);
  min-height: calc(100vh - 85px);
  padding: 56px 0 42px;
  position: relative;
  width: 100%;
  max-width: none;
}

.hero-copy {
  margin-left: max(20px, calc((100vw - 1180px) / 2));
  max-width: min(760px, calc(100vw - 40px));
}

.hero-logo {
  display: block;
  height: auto;
  margin-bottom: 34px;
  max-width: min(360px, 76vw);
  width: 100%;
}

.eyebrow {
  color: var(--orange-dark);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  margin: 0 0 16px;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  color: var(--navy);
  font-size: clamp(2.75rem, 4.55vw, 4.7rem);
  line-height: 1;
  margin-bottom: 24px;
  max-width: 100%;
}

h2 {
  color: var(--navy);
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1;
  margin-bottom: 18px;
}

h3 {
  color: var(--navy);
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.intro {
  color: #263f5f;
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  line-height: 1.55;
  max-width: 720px;
}

.hero-actions,
.registration {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  border: 1px solid transparent;
  border-radius: 999px;
  display: inline-flex;
  font-weight: 900;
  justify-content: center;
  padding: 15px 22px;
  text-decoration: none;
  transition:
    background-color 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.button.primary {
  background: var(--orange);
  color: #fff;
}

.button.primary:hover {
  background: var(--orange-dark);  
}

.button:focus-visible {
  outline: 3px solid rgba(240, 120, 0, 0.28);
  outline-offset: 3px;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(6, 38, 93, 0.22);
  color: var(--navy);
}

.button.light {
  background: #fff;
  color: var(--orange-dark);
  flex-shrink: 0;
}

.button.primary.light:hover {
  background: #fff;
  color: var(--navy);
}

.quick-facts {
  display: grid;
  gap: 0;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  overflow: hidden;
  padding-bottom: 78px;
}

.quick-facts article {
  background: transparent;
  border: 0;
  padding: 24px 28px 24px 0;
}

.quick-facts article + article {
  padding-left: 28px;
}

.quick-facts span,
.timeline time {
  color: var(--orange-dark);
  display: block;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.quick-facts strong {
  color: var(--navy);
  line-height: 1.35;
}

.section {
  padding: 78px 0;
}

.split {
  align-items: start;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 36px;
  grid-template-columns: 0.9fr 1.1fr;
}

.split p:not(.eyebrow),
.section-heading + p {
  color: var(--muted);
  font-size: 1.15rem;
  line-height: 1.75;
}

.section-heading {
  margin-bottom: 34px;
  max-width: 760px;
}

.timeline {
  border-top: 1px solid var(--line);
}

.timeline article {
  align-items: start;
  display: grid;
  gap: 24px;
  grid-template-columns: 160px minmax(0, 1fr);
  padding: 26px 0;
  position: relative;
}

.timeline time {
  padding-top: 7px;
}

.timeline article + article {
  border-top: 1px solid var(--line);
}

.timeline p,
.speaker-grid p,
.registration p,
footer p {
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 0;
}

.speakers {
  border-top: 1px solid var(--line);
}

.speaker-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.speaker-grid article {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  min-height: 210px;
  padding: 22px;
}

.speaker-grid span {
  align-items: center;
  background: var(--sky);
  border-radius: 50%;
  color: var(--blue);
  display: inline-flex;
  font-weight: 900;
  height: 58px;
  justify-content: center;
  margin-bottom: 22px;
  width: 58px;
}

.speaker-photo {
  border: 3px solid #fff;
  border-radius: 50%;
  box-shadow: 0 10px 24px rgba(6, 38, 93, 0.16);
  display: block;
  height: 82px;
  margin-bottom: 20px;
  object-fit: cover;
  width: 82px;
}

.registration {
  background:
    linear-gradient(135deg, rgba(6, 38, 93, 0.95), rgba(13, 118, 189, 0.9)),
    var(--navy);
  border-radius: 30px;
  color: #fff;
  justify-content: space-between;
  margin-bottom: 70px;
  padding: clamp(28px, 5vw, 52px);
}

.registration h2,
.registration .eyebrow,
.registration p {
  color: #fff;
}

.registration div {
  max-width: 720px;
}

footer {
  border-top: 1px solid var(--line);
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
  padding: 28px 0 42px;
}

.partner-logos {
  align-items: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  justify-content: space-between;
  padding: 20px 24px;
}

.partner-logos img {
  display: block;
  max-height: 58px;
  max-width: 170px;
  object-fit: contain;
}

@media (max-width: 880px) {
  .site-header,
  footer {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    flex-wrap: wrap;
  }

  .hero,
  .split {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .quick-facts,
  .speaker-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 620px) {
  .site-header {
    position: static;
  }

  h1 {
    font-size: 2.45rem;
    line-height: 1.06;
  }

  .eyebrow {
    font-size: 0.72rem;
    letter-spacing: 0.08em;
  }

  .quick-facts,
  .speaker-grid,
  .timeline article {
    grid-template-columns: 1fr;
  }

  .timeline time {
    padding-top: 0;
  }

  .section {
    padding: 54px 0;
  }
}