:root {
  --bg: #f6f8f7;
  --bg-soft: #edf4f2;
  --surface: #ffffff;
  --surface-tint: #f9fbfb;
  --ink: #111d20;
  --muted: #5b686c;
  --muted-strong: #38484d;
  --line: rgba(17, 29, 32, 0.10);
  --line-strong: rgba(17, 29, 32, 0.16);
  --teal: #0b6f79;
  --teal-dark: #07444c;
  --cyan: #1599a4;
  --coral: #d96f61;
  --indigo: #4e5f93;
  --gold: #a8893a;
  --shadow: 0 20px 50px rgba(17, 29, 32, 0.08);
  --container: min(1180px, calc(100vw - 32px));
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(rgba(17, 29, 32, 0.026) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 29, 32, 0.026) 1px, transparent 1px),
    linear-gradient(180deg, #fbfcfc 0%, var(--bg) 44%, #ffffff 100%);
  background-size: 40px 40px, 40px 40px, auto;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.nav-open {
  overflow: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

.container {
  width: var(--container);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  transform: translateY(-170%);
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  padding: 10px 14px;
  font-weight: 800;
}

.skip-link:focus {
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.progress-bar {
  position: fixed;
  inset: 0 auto auto 0;
  z-index: 120;
  width: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--teal), var(--cyan), var(--coral));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 14px 0 0;
}

.nav-shell {
  min-height: 68px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 14px 34px rgba(17, 29, 32, 0.07);
  backdrop-filter: blur(16px);
}

.brand {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(135deg, var(--teal-dark), var(--teal));
  font-size: 14px;
  font-weight: 900;
}

.brand-copy {
  min-width: 0;
  display: grid;
  line-height: 1.1;
}

.brand-copy strong {
  font-size: 18px;
  font-weight: 900;
}

.brand-copy span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  border-radius: 999px;
  padding: 9px 11px;
  color: var(--muted-strong);
  font-size: 14px;
  font-weight: 800;
  line-height: 1;
  white-space: nowrap;
  transition: color 150ms ease, background 150ms ease;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--teal-dark);
  background: rgba(11, 111, 121, 0.09);
}

.site-nav a.nav-submit {
  padding: 9px 11px;
  color: #fff;
  background: var(--teal-dark);
}

.site-nav a.nav-submit:hover,
.site-nav a.nav-submit.active {
  color: #fff;
  background: var(--teal);
}

.nav-submit span {
  margin-left: 2px;
  font-size: 13px;
  line-height: 1;
}

.conference-logo {
  display: inline-flex;
  align-items: center;
  justify-self: end;
}

.conference-logo img {
  width: 132px;
  height: auto;
}

.nav-toggle {
  width: 44px;
  height: 44px;
  display: none;
  place-items: center;
  gap: 4px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #fff;
  cursor: pointer;
}

.nav-toggle-line {
  width: 18px;
  height: 2px;
  display: block;
  background: var(--ink);
  border-radius: 99px;
}

.hero {
  padding: 54px 0 42px;
}

.hero-grid {
  min-height: 560px;
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(520px, 1.18fr);
  gap: 30px;
  align-items: center;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 900;
  line-height: 1.2;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: 0;
  line-height: 1.12;
}

.hero h1 {
  max-width: 660px;
  font-size: 58px;
  line-height: 1.04;
}

.hero-copy > p:not(.eyebrow) {
  max-width: 560px;
  margin: 20px 0 0;
  color: var(--muted-strong);
  font-size: 18px;
  line-height: 1.55;
}

.hero-actions,
.contact-strip,
.venue-grid .button {
  margin-top: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 12px 18px;
  font-weight: 900;
  line-height: 1;
  transition: transform 150ms ease, background 150ms ease, border-color 150ms ease;
}

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

.button span {
  width: 20px;
  height: 20px;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  font-size: 15px;
}

.button.primary {
  color: #fff;
  background: var(--teal-dark);
  border-color: var(--teal-dark);
}

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

.button.primary span {
  background: rgba(255, 255, 255, 0.16);
}

.button.secondary {
  color: var(--ink);
  background: #fff;
  border-color: var(--line-strong);
}

.button.secondary:hover {
  border-color: rgba(11, 111, 121, 0.34);
}

.button.secondary span {
  background: rgba(11, 111, 121, 0.10);
  color: var(--teal);
}

.hero-visual {
  margin: 0;
  position: relative;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow);
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 4px solid rgba(255, 255, 255, 0.68);
  pointer-events: none;
}

.hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  box-shadow: var(--shadow);
}

.facts article,
.profile-grid article,
.program-summary article,
.date-grid article {
  display: grid;
  gap: 8px;
  align-content: center;
  background: #fff;
  padding: 24px;
}

.facts span,
.profile-grid span,
.program-summary span,
.date-grid span,
.topic-list span,
.pillar-card span,
.news-card time,
.news-label,
.session-label {
  color: var(--teal);
  font-size: 13px;
  font-weight: 900;
  line-height: 1.2;
  text-transform: uppercase;
}

.facts strong,
.profile-grid strong,
.date-grid strong {
  color: var(--ink);
  font-size: 18px;
  line-height: 1.3;
}

.section {
  padding: 94px 0;
}

.section.soft {
  background: rgba(237, 244, 242, 0.72);
  border-block: 1px solid rgba(17, 29, 32, 0.05);
}

.section-head {
  max-width: 820px;
  margin-bottom: 34px;
}

.section-head h2,
.submission-panel h2,
.venue-grid h2 {
  font-size: 42px;
}

.section-head > p:not(.eyebrow),
.split-head > p,
.rich-text p,
.pillar-card p,
.topic-list p,
.timeline p,
.person-card p,
.submission-panel p,
.venue-grid p,
.faq-grid p,
.contact-strip span,
.footer-grid p,
.news-card p {
  margin: 0;
  color: var(--muted);
}

.section-head > p:not(.eyebrow) {
  margin-top: 16px;
  font-size: 18px;
}

.split-head {
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(280px, 0.7fr);
  gap: 42px;
  align-items: end;
}

.split-head > p {
  font-size: 17px;
}

.news-grid,
.pillar-grid,
.topic-list,
.speaker-grid,
.organizer-grid,
.faq-grid {
  display: grid;
  gap: 16px;
}

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

.news-card,
.pillar-card,
.topic-list article,
.person-card,
.faq-grid article,
.submission-panel,
.venue-grid,
.contact-strip {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.news-card {
  min-height: 190px;
  padding: 24px;
}

.news-card h3 {
  margin-top: 14px;
  font-size: 21px;
}

.news-card p {
  margin-top: 12px;
}

.news-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  color: var(--teal-dark);
  font-weight: 900;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.news-action:hover {
  color: var(--teal);
}

.muted-card {
  background: var(--surface-tint);
}

.two-column {
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(0, 1.28fr);
  gap: 72px;
  align-items: start;
}

.sticky-head {
  position: sticky;
  top: 112px;
}

.rich-text {
  max-width: 780px;
}

.rich-text .lead {
  color: var(--ink);
  font-size: 22px;
  line-height: 1.55;
}

.rich-text p + p {
  margin-top: 22px;
}

.profile-grid {
  margin-top: 34px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

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

.pillar-card {
  min-height: 284px;
  padding: 26px;
}

.pillar-card span {
  color: var(--coral);
}

.pillar-card h3,
.topic-list h3,
.timeline h3,
.person-card h3,
.faq-grid h3 {
  font-size: 21px;
}

.pillar-card h3 {
  margin-top: 22px;
}

.pillar-card p,
.topic-list p,
.faq-grid p {
  margin-top: 12px;
}

.topic-list {
  grid-template-columns: repeat(2, 1fr);
}

.topic-list article {
  padding: 24px;
  display: grid;
  gap: 8px;
}

.program-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 26px;
  align-items: start;
}

.program-summary {
  display: grid;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.program-summary article {
  min-height: 114px;
}

.program-summary strong {
  color: var(--teal-dark);
  font-size: 23px;
  line-height: 1.1;
}

.timeline {
  display: grid;
  gap: 12px;
}

.timeline article {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 22px;
}

.timeline time,
.session-label {
  color: var(--coral);
  font-weight: 900;
}

.timeline p {
  margin-top: 8px;
}

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

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

.organizer-grid .person-card {
  grid-template-columns: 68px 1fr;
}

.person-card {
  min-height: 170px;
  padding: 22px;
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 16px;
  align-items: start;
}

.speaker-card {
  min-height: 320px;
  padding: 26px;
  grid-template-columns: 78px 1fr;
}

.avatar {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  font-weight: 900;
  font-size: 14px;
}

.avatar.teal {
  background: var(--teal);
}

.avatar.indigo {
  background: var(--indigo);
}

.organizer-photo {
  position: relative;
  width: 64px;
  height: 64px;
  overflow: hidden;
  padding: 0;
  background: #eef5f4;
  border: 2px solid #ffffff;
  box-shadow: 0 8px 18px rgba(17, 29, 32, 0.10);
}

.organizer-photo img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 38%;
}

.speaker-photo {
  position: relative;
  width: 74px;
  height: 74px;
  overflow: hidden;
  padding: 0;
  background: #eef5f4;
  border: 2px solid #ffffff;
  box-shadow: 0 10px 22px rgba(17, 29, 32, 0.12);
}

.speaker-photo img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 35%;
}

.person-card .role {
  margin-top: 6px;
  color: var(--ink);
  font-weight: 750;
  line-height: 1.45;
}

.person-card p:not(.role) {
  margin-top: 14px;
}

.person-card a {
  display: inline-block;
  margin-top: 10px;
  color: var(--teal);
  font-weight: 900;
  overflow-wrap: anywhere;
}

.submission-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1fr);
  gap: 42px;
  padding: 42px;
  background:
    linear-gradient(135deg, rgba(11, 111, 121, 0.08), rgba(217, 111, 97, 0.08)),
    #fff;
}

.submission-panel p {
  margin-top: 18px;
  font-size: 18px;
}

.submission-panel .deadline-note {
  font-size: 14px;
  line-height: 1.6;
}

.submission-actions {
  display: flex;
  margin-top: 24px;
}

.inline-link {
  color: var(--teal);
  font-weight: 800;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.inline-link:hover {
  color: var(--teal-dark);
}

.date-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.date-grid article {
  min-height: 120px;
}

.venue-section {
  padding-top: 82px;
}

.venue-grid {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(0, 1fr);
  gap: 36px;
  padding: 18px;
  align-items: center;
}

.venue-grid figure {
  margin: 0;
  overflow: hidden;
  border-radius: 6px;
  background: var(--bg-soft);
}

.venue-grid img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}

.venue-grid > div {
  padding: 22px 20px 22px 0;
}

.venue-grid p {
  margin-top: 18px;
  font-size: 18px;
}

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

.faq-grid article {
  padding: 24px;
}

.contact-strip {
  margin-top: 18px;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.contact-strip div {
  display: grid;
  gap: 4px;
}

.contact-strip strong {
  font-size: 20px;
}

.contact-strip .button {
  flex: 0 0 auto;
}

.institution-strip {
  padding: 42px 0;
  background: rgba(247, 251, 249, 0.86);
  border-top: 1px solid var(--line);
}

.institution-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

.institution-head h2 {
  margin: 0;
  font-size: 24px;
  letter-spacing: 0;
}

.institution-logos {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}

.institution-logo {
  height: 106px;
  display: grid;
  place-items: center;
  padding: 16px;
  border: 1px solid rgba(122, 146, 151, 0.24);
  border-radius: 8px;
  background: #fff;
}

.institution-logo img {
  display: block;
  width: 100%;
  max-width: 156px;
  height: 72px;
  object-fit: contain;
}

.site-footer {
  padding: 40px 0 48px;
  background: #fff;
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 28px;
}

.footer-grid img {
  width: 148px;
  margin-bottom: 10px;
}

@media (max-width: 1120px) {
  .nav-shell {
    grid-template-columns: auto auto auto;
  }

  .nav-toggle {
    display: inline-grid;
    justify-self: end;
  }

  .site-nav {
    position: fixed;
    inset: 92px 16px auto;
    display: none;
    grid-template-columns: 1fr;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: #fff;
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: grid;
  }

  .site-nav a {
    padding: 12px;
    border-radius: 6px;
  }

  .site-nav a.nav-submit {
    margin-top: 4px;
    padding: 12px;
    text-align: center;
  }

  .conference-logo img {
    width: 116px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    min-height: auto;
    gap: 28px;
  }

  .hero-visual {
    order: -1;
  }

  .hero h1 {
    font-size: 52px;
  }

  .pillar-grid,
  .facts {
    grid-template-columns: repeat(2, 1fr);
  }

  .program-layout,
  .two-column,
  .submission-panel,
  .venue-grid {
    grid-template-columns: 1fr;
  }

  .sticky-head {
    position: static;
  }

  .venue-grid > div {
    padding: 4px 4px 16px;
  }
}

@media (max-width: 780px) {
  :root {
    --container: min(100vw - 24px, 1180px);
  }

  body {
    background-size: 30px 30px, 30px 30px, auto;
  }

  .site-header {
    padding-top: 10px;
  }

  .nav-shell {
    min-height: 62px;
    gap: 8px;
    padding: 8px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .brand-copy strong {
    font-size: 16px;
  }

  .brand-copy span {
    font-size: 10px;
  }

  .conference-logo img {
    width: 92px;
  }

  .site-nav {
    inset: 78px 12px auto;
  }

  .hero {
    padding: 28px 0 24px;
  }

  .hero h1 {
    font-size: 38px;
    line-height: 1.08;
  }

  .hero-copy > p:not(.eyebrow) {
    font-size: 18px;
  }

  .hero-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .facts,
  .news-grid,
  .pillar-grid,
  .topic-list,
  .speaker-grid,
  .organizer-grid,
  .faq-grid,
  .date-grid,
  .split-head {
    grid-template-columns: 1fr;
  }

  .facts article,
  .profile-grid article,
  .program-summary article,
  .date-grid article {
    padding: 20px;
  }

  .section {
    padding: 70px 0;
  }

  .section-head h2,
  .submission-panel h2,
  .venue-grid h2 {
    font-size: 31px;
  }

  .rich-text .lead {
    font-size: 19px;
  }

  .pillar-card {
    min-height: auto;
  }

  .timeline article,
  .person-card {
    grid-template-columns: 1fr;
  }

  .organizer-grid .person-card {
    grid-template-columns: 1fr;
  }

  .submission-panel {
    padding: 26px;
  }

  .venue-grid {
    padding: 12px;
  }

  .venue-grid img {
    height: 260px;
  }

  .contact-strip,
  .footer-grid,
  .institution-head {
    display: grid;
  }

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

  .institution-logo {
    height: 98px;
    padding: 14px;
  }

  .contact-strip .button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}