:root {
  --ink: #182527;
  --muted: #5b6a6d;
  --line: #dbe6e3;
  --paper: #ffffff;
  --soft: #f4f8f6;
  --teal: #067a7c;
  --teal-dark: #075e61;
  --green: #62a744;
  --gold: #f1b84b;
  --coral: #d86445;
  --shadow: 0 24px 80px rgba(24, 37, 39, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  overflow-x: hidden;
}

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

.navbar {
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(219, 230, 227, 0.85);
  backdrop-filter: blur(14px);
  box-shadow: 0 8px 28px rgba(24, 37, 39, 0.06);
}

.navbar-brand {
  align-items: center;
  color: var(--ink);
  display: inline-flex;
  gap: 0.75rem;
  min-width: 0;
}

.navbar-brand strong,
.navbar-brand small {
  display: block;
  line-height: 1.1;
}

.navbar-brand small {
  color: var(--muted);
  font-size: 0.72rem;
  margin-top: 0.2rem;
  white-space: normal;
}

.brand-mark {
  align-items: center;
  background: linear-gradient(135deg, var(--teal), var(--green));
  border-radius: 8px;
  color: #fff;
  display: inline-flex;
  font-weight: 800;
  height: 42px;
  justify-content: center;
  letter-spacing: 0;
  width: 42px;
}

.nav-link {
  color: #2f3f42;
  font-size: 0.86rem;
  font-weight: 700;
  padding: 1rem 0.54rem !important;
}

.nav-link:hover,
.nav-link.active {
  color: var(--teal);
}

.hero {
  min-height: 100vh;
  overflow: hidden;
  position: relative;
}

.hero-image,
.hero-shade {
  height: 100%;
  inset: 0;
  position: absolute;
  width: 100%;
}

.hero-image {
  object-fit: cover;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(5, 33, 37, 0.78), rgba(5, 33, 37, 0.45) 42%, rgba(5, 33, 37, 0.08) 75%),
    linear-gradient(0deg, rgba(5, 33, 37, 0.86), rgba(5, 33, 37, 0.08) 45%);
}

.hero-content {
  color: #fff;
  padding-bottom: 4rem;
  padding-top: 7rem;
  position: relative;
  z-index: 2;
}

.eyebrow,
.section-kicker {
  color: var(--coral);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #ffd884;
}

h1,
h2,
h3 {
  font-weight: 840;
  letter-spacing: 0;
  line-height: 1.08;
}

h1 {
  font-size: clamp(2.4rem, 6vw, 5.6rem);
  max-width: 980px;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.45rem);
}

h3 {
  font-size: 1.15rem;
}

.lead {
  font-size: clamp(1.05rem, 2vw, 1.34rem);
  max-width: 820px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2rem;
}

.btn {
  align-items: center;
  border-radius: 8px;
  display: inline-flex;
  font-weight: 800;
  gap: 0.55rem;
  justify-content: center;
  min-height: 46px;
}

.btn-primary {
  background: var(--teal);
  border-color: var(--teal);
}

.btn-primary:hover {
  background: var(--teal-dark);
  border-color: var(--teal-dark);
}

.hero-facts {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.38);
  border-radius: 8px;
  box-shadow: var(--shadow);
  color: var(--ink);
  display: grid;
  gap: 1px;
  margin-left: auto;
  max-width: 360px;
  overflow: hidden;
  backdrop-filter: blur(18px);
}

.hero-facts div {
  background: rgba(255, 255, 255, 0.72);
  padding: 1.2rem 1.3rem;
}

.hero-facts span {
  color: var(--muted);
  display: block;
  font-size: 0.82rem;
  font-weight: 750;
  margin-bottom: 0.3rem;
}

.hero-facts strong {
  color: var(--teal-dark);
  font-size: 1.7rem;
  line-height: 1;
}

.section {
  padding: 6.4rem 0;
  scroll-margin-top: 88px;
}

.section-muted {
  background: var(--soft);
}

.section-heading {
  margin-bottom: 2.4rem;
  max-width: 820px;
}

.section-heading p:last-child {
  color: var(--muted);
  font-size: 1.08rem;
}

.signal-panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  display: grid;
}

.signal-item {
  align-items: flex-start;
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 1rem;
  grid-template-columns: 42px 1fr;
  padding: 1.35rem;
}

.signal-item:last-child {
  border-bottom: 0;
}

.signal-item i {
  align-items: center;
  background: #e8f4ef;
  border-radius: 8px;
  color: var(--teal);
  display: inline-flex;
  font-size: 1.25rem;
  height: 42px;
  justify-content: center;
  width: 42px;
}

.signal-item strong,
.signal-item span {
  display: block;
}

.signal-item span {
  color: var(--muted);
  margin-top: 0.2rem;
}

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

.track-card,
.person-card,
.speaker-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 14px 40px rgba(24, 37, 39, 0.07);
  min-width: 0;
  padding: 1.4rem;
}

.track-card span {
  align-items: center;
  background: #fff3d5;
  border-radius: 8px;
  color: #8a5b00;
  display: inline-flex;
  font-weight: 850;
  height: 38px;
  justify-content: center;
  margin-bottom: 1rem;
  width: 38px;
}

.track-card p,
.person-card p {
  color: var(--muted);
  margin-bottom: 0;
}

.venue-panel {
  border-radius: 8px;
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
}

.venue-panel img {
  aspect-ratio: 16 / 8.4;
  display: block;
  height: auto;
  max-height: 420px;
  object-fit: cover;
  width: 100%;
}

.venue-card {
  background: rgba(255, 255, 255, 0.94);
  border-radius: 8px;
  bottom: 1.2rem;
  box-shadow: 0 18px 42px rgba(24, 37, 39, 0.18);
  left: 1.2rem;
  max-width: min(420px, calc(100% - 2.4rem));
  padding: 1rem;
  position: absolute;
}

.venue-card strong,
.venue-card span {
  display: block;
}

.venue-card span {
  color: var(--muted);
  margin-top: 0.25rem;
}

address {
  border-left: 4px solid var(--gold);
  color: var(--muted);
  font-weight: 700;
  margin: 1.4rem 0;
  padding-left: 1rem;
}

.dates-section {
  background: #173d3d;
  color: #fff;
}

.dates-section .section-kicker {
  color: #ffd884;
}

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

.timeline-item {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  padding: 1.4rem;
}

.timeline-item span,
.person-card span {
  color: var(--coral);
  display: block;
  font-size: 0.82rem;
  font-weight: 850;
  margin-bottom: 0.55rem;
  text-transform: uppercase;
}

.timeline-item span {
  color: #ffd884;
}

.timeline-item strong {
  display: block;
  font-size: 1.12rem;
}

.leadership-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 2rem;
}

.person-card strong {
  display: block;
  font-size: 1.15rem;
  margin-bottom: 0.35rem;
}

.committee-list {
  border-top: 1px solid var(--line);
  padding-top: 2rem;
}

.committee-list h3 {
  margin-bottom: 1.2rem;
}

.committee-columns {
  columns: 3 260px;
  column-gap: 2rem;
}

.committee-columns p {
  break-inside: avoid;
  color: var(--muted);
  font-size: 0.93rem;
  margin-bottom: 0.7rem;
}

.review-grid {
  display: grid;
  gap: 0.85rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.review-grid div {
  align-items: center;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: flex;
  gap: 0.75rem;
  padding: 1rem;
}

.review-grid i {
  color: var(--green);
  font-size: 1.4rem;
}

.ethics-note {
  color: var(--muted);
  margin: 1.2rem 0 0;
}

.keynote-grid {
  display: grid;
  gap: 1.1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.speaker-card {
  align-items: flex-start;
  display: grid;
  gap: 1.1rem;
  grid-template-columns: 128px 1fr;
  overflow: hidden;
  padding: 1.25rem;
}

.speaker-card img {
  aspect-ratio: 1 / 1;
  background: #edf4f2;
  border: 4px solid #fff;
  border-radius: 50%;
  box-shadow: 0 12px 28px rgba(24, 37, 39, 0.13);
  display: block;
  height: 128px;
  object-fit: cover;
  object-position: center top;
  overflow: hidden;
  width: 100%;
}

.speaker-card span {
  color: var(--coral);
  display: block;
  font-size: 0.78rem;
  font-weight: 850;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.speaker-card strong {
  display: block;
  font-size: 1.15rem;
  line-height: 1.2;
  margin-bottom: 0.4rem;
}

.speaker-card p {
  color: var(--muted);
  margin: 0 0 0.65rem;
}

.speaker-card p:last-child {
  margin-bottom: 0;
}

.speaker-bio {
  font-size: 0.94rem;
  line-height: 1.55;
}

.registration-section {
  background:
    linear-gradient(135deg, rgba(6, 122, 124, 0.08), rgba(98, 167, 68, 0.1)),
    #fff;
}

.registration-table {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  margin: 0;
  overflow: hidden;
}

.registration-table th {
  background: #173d3d;
  color: #fff;
  padding: 1rem 1.2rem;
}

.registration-table td {
  padding: 1rem 1.2rem;
}

.registration-table td:last-child {
  color: var(--teal-dark);
  font-weight: 850;
  white-space: nowrap;
}

.footer {
  background: #101d1f;
  color: #fff;
  padding: 5rem 0 2rem;
  scroll-margin-top: 88px;
}

.footer p {
  color: #c8d3d4;
}

.contact-grid {
  display: grid;
  gap: 0.9rem;
}

.contact-grid a {
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  color: #fff;
  display: grid;
  gap: 0.25rem 0.85rem;
  grid-template-columns: 34px 1fr;
  padding: 1rem;
  text-decoration: none;
}

.contact-grid i {
  color: #ffd884;
  font-size: 1.2rem;
  grid-row: span 2;
}

.contact-grid span {
  color: #c8d3d4;
  font-size: 0.85rem;
}

.contact-grid strong {
  overflow-wrap: anywhere;
}

.footer-bottom {
  align-items: center;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: #c8d3d4;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1.3rem;
}

.footer-bottom a {
  color: #ffd884;
}

@media (max-width: 1199px) {
  .navbar-collapse {
    max-height: calc(100vh - 74px);
    overflow-y: auto;
    padding-bottom: 1rem;
  }

  .nav-link {
    padding: 0.62rem 0 !important;
  }

  .track-grid,
  .leadership-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 767px) {
  .navbar-brand {
    max-width: calc(100% - 64px);
  }

  .navbar-brand small {
    font-size: 0.66rem;
  }

  .hero-content {
    padding-bottom: 2rem;
    padding-top: 6rem;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-facts {
    margin-top: 2rem;
    max-width: none;
  }

  .section {
    padding: 4.5rem 0;
  }

  .track-grid,
  .timeline,
  .leadership-grid,
  .review-grid,
  .keynote-grid {
    grid-template-columns: 1fr;
  }

  .venue-card {
    inset: auto 0 0 0;
    border-radius: 8px 8px 0 0;
    max-width: none;
    position: relative;
  }

  .committee-columns {
    columns: 1;
  }

  .speaker-card {
    grid-template-columns: 96px 1fr;
  }

  .speaker-card img {
    height: 96px;
  }
}