:root {
  --primary: #0d2340;
  --primary-strong: #081a2e;
  --secondary: #234d76;
  --accent: #2ca7a3;
  --accent-soft: rgba(44, 167, 163, 0.12);
  --warm: #d77f4f;
  --background: #f4f7fb;
  --surface: #ffffff;
  --surface-soft: #eef3f9;
  --text: #1d2430;
  --muted: #59657e;
  --border: #dfe7f1;
  --shadow: 0 12px 28px rgba(13, 35, 64, 0.08);
  --radius: 18px;
  --max-width: 1200px;
  --nav-height: 80px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--background);
  line-height: 1.7;
}

a {
  color: var(--secondary);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  color: var(--primary);
}

img {
  max-width: 100%;
  display: block;
}

button,
input,
textarea,
select {
  font: inherit;
}

:focus-visible {
  outline: 3px solid rgba(44, 167, 163, 0.45);
  outline-offset: 3px;
}

.container {
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 0 auto;
}

.narrow {
  max-width: 860px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(223, 231, 241, 0.9);
}

.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--nav-height);
  gap: 1.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.7rem;
  height: 2.7rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--surface);
  border-radius: 0.8rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
}

.brand-text {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  flex-wrap: wrap;
}

.nav-menu a {
  position: relative;
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--muted);
  padding: 0.5rem 0;
}

.nav-menu a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.15rem;
  width: 100%;
  height: 2px;
  background: var(--accent);
  opacity: 0;
  transform: scaleX(0.7);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.nav-menu a:hover::after,
.nav-menu a:focus-visible::after,
.nav-menu a.active::after {
  opacity: 1;
  transform: scaleX(1);
}

.nav-menu a:hover,
.nav-menu a:focus-visible,
.nav-menu a.active {
  color: var(--primary);
}

.nav-toggle {
  display: none;
  width: 2.8rem;
  height: 2.8rem;
  padding: 0.45rem;
  border: 1px solid var(--border);
  border-radius: 0.7rem;
  background: var(--surface);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--primary);
  margin: 0.38rem 0;
  border-radius: 999px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.hero {
  background: linear-gradient(180deg, rgba(245, 249, 255, 0.9), rgba(244, 247, 251, 1));
  padding: 4.25rem 0 3.25rem;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  font-weight: 700;
}

.hero h1,
.section-heading h3,
.hero h2,
.main-title {
  margin: 0;
  color: var(--primary);
  line-height: 1.08;
}

.hero h1 {
  font-size: clamp(2.5rem, 4vw, 4.2rem);
  letter-spacing: -0.05em;
}

.hero h2 {
  margin-top: 1rem;
  font-size: clamp(1.7rem, 2.3vw, 2.8rem);
  line-height: 1.2;
  letter-spacing: -0.04em;
  max-width: 660px;
}

.subtitle {
  margin-top: 1.25rem;
  max-width: 700px;
  font-size: 1.08rem;
  color: var(--muted);
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(180px, 1fr));
  gap: 1rem 1.5rem;
  margin-top: 1.8rem;
  max-width: 640px;
}

.meta-label {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.35rem;
}

.hero-meta strong,
.meta-block strong,
.date-card strong {
  color: var(--primary);
  font-size: 0.98rem;
}

.cta-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.12rem;
  padding: 0.9rem 1.5rem;
  border-radius: 0.9rem;
  border: 1px solid transparent;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button.primary {
  background: var(--primary);
  color: var(--surface);
  box-shadow: var(--shadow);
}

.button.secondary {
  background: var(--surface);
  color: var(--primary);
  border-color: var(--border);
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.network-panel {
  position: relative;
  width: min(100%, 420px);
  min-height: 420px;
  background: linear-gradient(180deg, var(--surface), var(--surface-soft));
  border: 1px solid var(--border);
  border-radius: 1.5rem;
  box-shadow: var(--shadow);
  padding: 1.2rem;
  overflow: hidden;
}

.panel-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(44, 167, 163, 0.12);
  color: var(--primary);
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.45rem 0.8rem;
}

.network-grid {
  position: absolute;
  inset: 4.2rem 1rem 5.2rem 1rem;
  background:
    radial-gradient(circle at center, rgba(44, 167, 163, 0.10), transparent 22%),
    linear-gradient(135deg, rgba(13, 35, 64, 0.04), rgba(44, 167, 163, 0.02));
  border-radius: 1.2rem;
  overflow: hidden;
}

.network-grid::before,
.network-grid::after {
  content: "";
  position: absolute;
  width: 78%;
  height: 78%;
  left: 11%;
  top: 11%;
  border: 1px solid rgba(13, 35, 64, 0.15);
  border-radius: 50%;
}

.network-grid::after {
  width: 52%;
  height: 52%;
  left: 24%;
  top: 24%;
}

.node {
  position: absolute;
  display: block;
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 4px rgba(13, 35, 64, 0.08);
}

.n1 { top: 16%; left: 36%; background: var(--primary); }
.n2 { top: 22%; left: 62%; background: var(--accent); }
.n3 { top: 39%; left: 48%; background: var(--warm); }
.n4 { top: 42%; left: 72%; background: var(--secondary); }
.n5 { top: 58%; left: 34%; background: var(--primary); }
.n6 { top: 66%; left: 58%; background: var(--accent); }
.n7 { top: 74%; left: 76%; background: var(--warm); }
.n8 { top: 80%; left: 42%; background: var(--secondary); }
.n9 { top: 52%; left: 20%; background: var(--accent); }

.mini-legend {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  right: 1rem;
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
  font-size: 0.7rem;
  color: var(--muted);
}

.dot {
  display: inline-block;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  margin-right: 0.35rem;
  vertical-align: middle;
}

.dot.blue { background: var(--primary); }
.dot.teal { background: var(--accent); }
.dot.orange { background: var(--warm); }

.content-section {
  padding: 5rem 0;
}

.content-section.alt {
  background: rgba(206, 220, 237, 0.18);
}

.section-heading {
  margin-bottom: 2rem;
}

.section-heading.center {
  text-align: center;
}

.section-heading h3 {
  font-size: clamp(2rem, 2.8vw, 2.8rem);
  letter-spacing: -0.05em;
}

.rich-text {
  color: var(--text);
  font-size: 1.02rem;
}

.rich-text p,
.rich-text ul,
.rich-text li {
  margin-top: 0;
}

.definition-box,
.callout-block,
.review-box,
.contact-card,
.program-placeholder,
.submission-box {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 1.1rem;
  padding: 1.25rem 1.35rem;
  margin: 1.4rem 0;
  box-shadow: 0 6px 18px rgba(13, 35, 64, 0.04);
}

.definition-box h4,
.callout-block h4,
.program-placeholder h4 {
  margin-top: 0;
  margin-bottom: 0.7rem;
  color: var(--primary);
}

.card-grid {
  display: grid;
  gap: 1.4rem;
}

.themes-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.info-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.2rem;
  box-shadow: 0 8px 18px rgba(13, 35, 64, 0.03);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.info-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 24px rgba(13, 35, 64, 0.06);
}

.theme-card h4,
.outcome-card h4 {
  margin-top: 0.8rem;
  margin-bottom: 0.75rem;
  font-size: 1.15rem;
  color: var(--primary);
}

.theme-card p,
.question-card p,
.outcome-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  min-height: 2.5rem;
  padding: 0.4rem 0.6rem;
  border-radius: 0.8rem;
  background: var(--accent-soft);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 700;
}

.question-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.question-card {
  padding: 1.5rem 1.25rem;
}

.question-number {
  display: inline-block;
  margin-bottom: 0.8rem;
  color: var(--primary);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.topics-columns {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.5rem;
}

.topic-list {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.3rem 1.1rem;
}

.topic-list h4 {
  margin-top: 0;
  margin-bottom: 0.8rem;
  color: var(--primary);
}

.topic-list ul,
.review-box ul,
.callout-block ul,
.program-placeholder ul,
.site-footer ul {
  margin: 0;
  padding-left: 1.1rem;
}

.topic-list li,
.callout-block li,
.review-box li,
.program-placeholder li,
.site-footer li {
  margin: 0.38rem 0;
  color: var(--muted);
}

.meta-block {
  margin-top: 1.5rem;
  padding: 1rem 1.2rem;
  border-left: 4px solid var(--accent);
  background: rgba(44, 167, 163, 0.04);
  border-radius: 0.6rem;
}

.review-box {
  background: rgba(13, 35, 64, 0.04);
}

.date-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1rem;
}

.date-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.2rem 1rem;
  text-align: center;
  box-shadow: 0 8px 18px rgba(13, 35, 64, 0.03);
}

.date-card.emphasis {
  border-color: rgba(44, 167, 163, 0.5);
  box-shadow: 0 12px 24px rgba(44, 167, 163, 0.08);
  background: linear-gradient(180deg, rgba(44, 167, 163, 0.08), rgba(255, 255, 255, 1));
}

.date-label {
  display: block;
  margin-bottom: 0.6rem;
  color: var(--muted);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.small-note {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.outcomes-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.program-placeholder {
  background: linear-gradient(180deg, rgba(255, 255, 255, 1), rgba(238, 243, 249, 0.9));
}

.empty-state {
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  color: var(--muted);
}

.organizer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem;
}

.organizer-card {
  display: flex;
  gap: 1.2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1.1rem;
  padding: 1.25rem;
  box-shadow: 0 8px 16px rgba(13, 35, 64, 0.03);
}

.org-photo,
.speaker-photo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4.5rem;
  height: 4.5rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--surface);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  flex-shrink: 0;
}

.org-content h4,
.speaker-details h4 {
  margin: 0 0 0.35rem;
  color: var(--primary);
  font-size: 1.2rem;
}

.role,
.affiliation,
.speaker-title,
.org-affiliation {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.96rem;
}

.org-note {
  margin: 0.6rem 0;
  color: var(--text);
}

.badge {
  display: inline-block;
  margin: 0.4rem 0 0.5rem;
  padding: 0.3rem 0.65rem;
  background: rgba(44, 167, 163, 0.08);
  border-radius: 999px;
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.speaker-card {
  display: flex;
  gap: 1.2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1.1rem;
  padding: 1.2rem;
  max-width: 480px;
}

.speaker-details a {
  font-weight: 600;
}

.hidden-template {
  display: none;
}

.contact-card {
  max-width: 460px;
}

.submission-box {
  text-align: center;
}

.deadline-line {
  margin: 0;
  color: var(--primary);
  font-size: clamp(1.2rem, 2vw, 1.8rem);
  font-weight: 700;
}

.platform-text {
  margin-top: 0.7rem;
  font-size: 1.1rem;
  color: var(--muted);
}

.site-footer {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.9);
  padding-top: 2.5rem;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.9);
}

.footer-layout {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding-bottom: 1.5rem;
}

.site-footer h4 {
  margin-top: 0;
  margin-bottom: 0.6rem;
  color: #ffffff;
}

.site-footer p,
.site-footer li {
  color: rgba(255, 255, 255, 0.8);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 1rem 0 1.6rem;
}

.scroll-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  width: 2.75rem;
  height: 2.75rem;
  border: none;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.scroll-top.visible {
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 1024px) {
  .themes-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .date-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .outcomes-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 780px) {
  .hero-layout,
  .organizer-grid,
  .date-grid,
  .topics-columns,
  .themes-grid,
  .question-grid {
    grid-template-columns: 1fr;
  }

  .hero-layout {
    display: block;
  }

  .hero {
    padding-top: 3rem;
  }

  .hero-copy {
    margin-bottom: 2rem;
  }

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

  .nav-toggle {
    display: block;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 1rem;
    left: 1rem;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--border);
    border-radius: 1rem;
    box-shadow: var(--shadow);
    padding: 0.8rem 1rem;
    flex-direction: column;
    align-items: flex-start;
  }

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

  .nav-menu a {
    width: 100%;
    padding: 0.5rem 0;
  }

  .footer-layout {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .hero h1 {
    font-size: 2.4rem;
  }

  .hero h2 {
    font-size: 1.7rem;
  }

  .button {
    width: 100%;
  }

  .cta-row {
    flex-direction: column;
    align-items: stretch;
  }

  .organizer-card {
    flex-direction: column;
  }
}