:root {
  --ink: #1a1230;
  --ink-2: #34215c;
  --muted: #6d647a;
  --page: #f4f6fb;
  --surface: #ffffff;
  --soft: #f0f4f7;
  --line: #e3e7ee;
  --gold: #ffc136;
  --orange: #ff4d3f;
  --teal: #00a99d;
  --blue: #166bd8;
  --shadow-sm: 0 6px 18px rgba(34, 24, 52, 0.06);
  --shadow-md: 0 16px 38px rgba(34, 24, 52, 0.1);
  --shadow-lg: 0 26px 64px rgba(34, 24, 52, 0.16);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 104px;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 4% 12%, rgba(255, 193, 54, 0.18), transparent 24rem),
    radial-gradient(circle at 96% 8%, rgba(0, 169, 157, 0.14), transparent 24rem),
    var(--page);
  font-size: 14px;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.98), rgba(255, 248, 229, 0.98), rgba(236, 251, 249, 0.98));
  border-bottom: 3px solid var(--gold);
  box-shadow: 0 12px 34px rgba(26, 18, 48, 0.1);
  backdrop-filter: blur(16px);
}

.nav-shell,
.section-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.nav-shell {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  padding: 8px 0 7px;
}

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

.brand-logo {
  width: 136px;
  height: auto;
  filter: drop-shadow(0 8px 16px rgba(26, 18, 48, 0.12));
}

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

.brand-copy strong {
  font-size: 0.94rem;
}

.brand-copy small {
  color: var(--muted);
  font-size: 0.72rem;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-2);
  font-size: 0.8rem;
  font-weight: 800;
}

.primary-nav a {
  border-radius: 6px;
  padding: 8px 10px;
  transition:
    transform 180ms ease,
    background 180ms ease,
    color 180ms ease;
}

.primary-nav a:hover,
.primary-nav a.is-current {
  color: var(--ink);
  background: var(--gold);
}

.primary-nav a:hover {
  transform: translateY(-1px);
}

.primary-nav .nav-cta {
  color: var(--surface);
  background: var(--ink);
  box-shadow: 0 12px 24px rgba(26, 18, 48, 0.18);
}

.primary-nav .nav-register {
  color: var(--ink);
  background: linear-gradient(135deg, var(--gold), #ffef8a);
  box-shadow: 0 12px 24px rgba(255, 181, 43, 0.24);
}

.primary-nav .nav-cta:hover {
  color: var(--surface);
  background: var(--orange);
}

.hero {
  position: relative;
  overflow: hidden;
  color: var(--surface);
  background: var(--ink);
  border-bottom: 4px solid var(--gold);
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero::before {
  background:
    linear-gradient(90deg, rgba(26, 18, 48, 0.98) 0%, rgba(52, 33, 92, 0.84) 52%, rgba(0, 169, 157, 0.42) 100%),
    url("assets/icits-hero-background.jpg") center / cover no-repeat;
  animation: hero-fade-pan 14s ease-in-out infinite alternate;
  transform: scale(1.04);
}

.hero::after {
  background:
    radial-gradient(circle at 18% 18%, rgba(255, 193, 54, 0.28), transparent 26%),
    radial-gradient(circle at 82% 44%, rgba(0, 169, 157, 0.22), transparent 30%),
    linear-gradient(135deg, rgba(255, 77, 63, 0.16), transparent 42%);
  animation: light-sweep 9s ease-in-out infinite alternate;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  align-items: center;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 44px 0 30px;
}

.hero-content {
  max-width: 820px;
  min-width: 0;
  animation: hero-content-rise 760ms ease-out both;
}

.eyebrow,
.section-kicker {
  margin: 0 0 10px;
  color: var(--gold);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0;
}

.hero h1,
.page-hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(2.35rem, 5.6vw, 4.25rem);
  line-height: 0.96;
  letter-spacing: 0;
}

.hero-title {
  max-width: 760px;
  margin: 14px 0 0;
  font-size: clamp(0.98rem, 1.55vw, 1.28rem);
  font-weight: 900;
  line-height: 1.08;
  overflow-wrap: break-word;
}

.hero-copy {
  max-width: 700px;
  margin: 12px 0 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(0.84rem, 1.05vw, 0.94rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.button {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  justify-content: center;
  border: 2px solid transparent;
  border-radius: 6px;
  padding: 8px 13px;
  box-shadow: var(--shadow-sm);
  font-size: 0.82rem;
  font-weight: 900;
  white-space: nowrap;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease,
    color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.button-primary {
  color: var(--ink);
  background: var(--gold);
}

.button-primary:hover {
  background: #ffd166;
}

.button-light {
  color: var(--ink);
  background: var(--surface);
}

.button-light:hover {
  color: var(--surface);
  background: var(--teal);
}

.button-outline {
  color: var(--ink);
  border-color: var(--ink);
  background: var(--surface);
}

.button-outline:hover {
  color: var(--surface);
  background: var(--ink);
}

.hero-visual {
  position: relative;
  overflow: hidden;
  align-self: stretch;
  min-height: 205px;
  background: var(--surface);
  border: 10px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-date-badge {
  position: absolute;
  right: 18px;
  bottom: 18px;
  width: min(230px, calc(100% - 36px));
  padding: 14px;
  color: var(--ink);
  background: var(--surface);
  border-left: 8px solid var(--gold);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.hero-date-badge span {
  display: block;
  color: var(--orange);
  font-size: 0.74rem;
  font-weight: 900;
  text-transform: uppercase;
}

.hero-date-badge strong {
  display: block;
  margin-top: 4px;
  font-size: 1.02rem;
  line-height: 1.1;
}

.hero-facts {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 2px;
}

.hero-facts div {
  min-height: 66px;
  padding: 11px 12px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.95);
  border-top: 4px solid var(--gold);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  animation: card-rise 620ms ease-out both;
}

.hero-facts div:nth-child(2) {
  animation-delay: 110ms;
}

.hero-facts div:nth-child(3) {
  animation-delay: 220ms;
}

.hero-facts span {
  display: block;
  color: var(--orange);
  font-size: 0.68rem;
  font-weight: 900;
  text-transform: uppercase;
}

.hero-facts strong {
  display: block;
  margin-top: 5px;
  font-size: clamp(0.8rem, 1.15vw, 0.94rem);
  line-height: 1.22;
}

.logo-marquee-band {
  overflow: hidden;
  padding: 12px 0;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 10px 24px rgba(34, 24, 52, 0.05);
}

.logo-marquee-track {
  display: flex;
  width: max-content;
  animation: logo-marquee 18s linear infinite;
}

.logo-marquee-band:hover .logo-marquee-track {
  animation-play-state: paused;
}

.logo-marquee-set {
  display: flex;
  align-items: center;
  gap: 38px;
  padding-right: 38px;
}

.logo-marquee-set img {
  width: auto;
  height: 54px;
  max-width: 230px;
  object-fit: contain;
  filter: drop-shadow(0 7px 14px rgba(34, 24, 52, 0.1));
}

.logo-marquee-set img:nth-child(1),
.logo-marquee-set img:nth-child(3) {
  max-width: 300px;
}

.logo-marquee-set img:nth-child(4),
.logo-marquee-set img:nth-child(5) {
  height: 62px;
}

.organizer-band {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(90deg, #352546, #46315b 48%, #2e5260);
  border-top: 0;
  border-bottom: 4px solid #2a1d3d;
}

.organizer-strip {
  position: relative;
  padding: 14px 0 16px;
}

.organizer-strip .section-kicker {
  color: var(--gold);
  margin-bottom: 8px;
}

.organizer-logos {
  position: relative;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 2px 0;
  cursor: grab;
  background: transparent;
  border: 0;
  border-radius: var(--radius);
  box-shadow: none;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
  touch-action: pan-x;
}

.organizer-logos::-webkit-scrollbar {
  display: none;
}

.organizer-logos::before,
.organizer-logos::after {
  content: none;
  position: absolute;
  top: 0;
  bottom: 0;
  z-index: 2;
  width: 70px;
  pointer-events: none;
}

.organizer-logos::before {
  left: 0;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.98), transparent);
}

.organizer-logos::after {
  right: 0;
  background: linear-gradient(270deg, rgba(255, 255, 255, 0.98), transparent);
}

.organizer-track {
  display: flex;
  width: max-content;
  animation: collaborator-marquee 18s linear infinite;
  will-change: transform;
}

.organizer-logos:hover {
  cursor: grab;
}

.organizer-logos:hover .organizer-track,
.organizer-logos.is-dragging .organizer-track {
  animation-play-state: paused;
}

.organizer-logos.is-dragging {
  cursor: grabbing;
}

.organizer-logo-set {
  flex: 0 0 auto;
  display: flex;
  align-items: stretch;
  gap: 16px;
  padding-right: 16px;
}

.logo-card {
  position: relative;
  flex: 0 0 160px;
  display: grid;
  overflow: hidden;
  min-height: 72px;
  place-items: center;
  padding: 8px 12px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius);
  box-shadow: none;
  animation: logo-float 4.8s ease-in-out infinite;
  transition:
    transform 220ms ease,
    box-shadow 220ms ease,
    background 220ms ease;
}

.logo-card::after {
  content: none;
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 0%, transparent 38%, rgba(255, 181, 43, 0.2) 50%, transparent 62%, transparent 100%);
  transform: translateX(-120%);
  animation: logo-shine 4.6s ease-in-out infinite;
  pointer-events: none;
}

.logo-card:hover {
  background: transparent;
  box-shadow: none;
  transform: translateY(-5px);
}

.organizer-logo-set .logo-card:nth-child(2) {
  animation-delay: 320ms;
}

.organizer-logo-set .logo-card:nth-child(3) {
  animation-delay: 640ms;
}

.organizer-logo-set .logo-card:nth-child(4) {
  animation-delay: 960ms;
}

.organizer-logo-set .logo-card:nth-child(5) {
  animation-delay: 1280ms;
}

.logo-card img {
  position: relative;
  z-index: 1;
  width: 100%;
  max-height: 58px;
  object-fit: contain;
  filter:
    drop-shadow(0 12px 20px rgba(0, 0, 0, 0.24))
    drop-shadow(0 0 12px rgba(255, 255, 255, 0.34));
}

.logo-card-wide img {
  max-height: 62px;
}

.logo-card-wide {
  flex-basis: 260px;
}

.logo-card-tall img {
  width: auto;
  max-height: 68px;
}

.logo-card-tall {
  flex-basis: 118px;
}

@keyframes logo-marquee {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(-50%);
  }
}

@keyframes collaborator-marquee {
  from {
    transform: translate3d(0, 0, 0);
  }

  to {
    transform: translate3d(-33.333333%, 0, 0);
  }
}

@keyframes hero-fade-pan {
  0% {
    opacity: 0.86;
    transform: scale(1.04) translate3d(0, 0, 0);
    filter: saturate(0.92);
  }

  45% {
    opacity: 1;
    filter: saturate(1.08);
  }

  100% {
    opacity: 0.9;
    transform: scale(1.09) translate3d(-18px, -8px, 0);
    filter: saturate(1);
  }
}

@keyframes light-sweep {
  from {
    opacity: 0.64;
    transform: translate3d(-10px, 0, 0);
  }

  to {
    opacity: 1;
    transform: translate3d(18px, 4px, 0);
  }
}

@keyframes hero-content-rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes card-rise {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes logo-float {
  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-4px);
  }
}

@keyframes logo-soft-pulse {
  0%,
  100% {
    box-shadow: 0 12px 26px rgba(34, 24, 52, 0.11);
  }

  50% {
    box-shadow: 0 20px 38px rgba(34, 24, 52, 0.17);
  }
}

@keyframes logo-shine {
  0%,
  52% {
    transform: translateX(-120%);
  }

  82%,
  100% {
    transform: translateX(120%);
  }
}

@keyframes image-breathe {
  from {
    opacity: 0.88;
    transform: scale(1);
  }

  to {
    opacity: 1;
    transform: scale(1.035);
  }
}

.section {
  padding: 54px 0;
  scroll-margin-top: 104px;
}

.hero,
.organizer-band,
.registration-section,
.section-contact {
  scroll-margin-top: 104px;
}

.section-light {
  background: #f1f5f7;
}

.section-accent {
  background:
    radial-gradient(circle at 8% 14%, rgba(255, 193, 54, 0.22), transparent 24rem),
    radial-gradient(circle at 92% 30%, rgba(22, 107, 216, 0.12), transparent 24rem),
    #fff7e6;
}

.section-accent .section-kicker {
  color: var(--orange);
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  gap: 30px;
  align-items: center;
}

.section-intro h2,
.about-grid h2,
.section-heading h2,
.feature-card h2,
.contact-grid h2,
.poster-callout h2,
.payment-grid h2 {
  margin: 0;
  font-size: clamp(1.3rem, 2.4vw, 2rem);
  line-height: 1.12;
  letter-spacing: 0;
}

.section-intro p,
.about-grid p,
.feature-card p,
.poster-callout p,
.payment-grid p,
.contact-grid p {
  color: var(--muted);
  font-size: 0.88rem;
}

.theme-panel {
  padding: 22px;
  color: var(--surface);
  background:
    linear-gradient(145deg, rgba(34, 24, 52, 0.98), rgba(51, 37, 77, 0.98));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  transition:
    transform 220ms ease,
    box-shadow 220ms ease;
}

.theme-panel:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.theme-panel h3 {
  margin: 0 0 10px;
  color: var(--gold);
  font-size: 0.86rem;
  text-transform: uppercase;
}

.theme-panel p {
  margin: 0;
  font-size: clamp(0.98rem, 1.55vw, 1.24rem);
  font-weight: 900;
  line-height: 1.16;
}

.subtheme-list {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.subtheme-list details {
  color: var(--ink);
  background: #ffc955;
  border-radius: 6px;
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.12);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease;
}

.subtheme-list details:hover {
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.16);
  transform: translateX(3px);
}

.subtheme-list summary {
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  cursor: pointer;
  font-weight: 900;
}

.subtheme-list summary::after {
  content: "+";
  font-size: 1.1rem;
}

.subtheme-list details[open] summary::after {
  content: "-";
}

.subtheme-list details p {
  margin: 0;
  padding: 0 12px 12px;
  color: var(--ink-2);
  font-size: 0.84rem;
  font-weight: 700;
  line-height: 1.35;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.75fr) minmax(0, 1fr);
  gap: 30px;
  align-items: start;
}

.about-grid > p {
  margin: 4px 0 0;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 5px solid var(--teal);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  font-size: clamp(0.88rem, 1.05vw, 0.96rem);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 22px;
}

.section-lede {
  max-width: 620px;
  margin: 10px 0 0;
  color: var(--muted);
}

.timeline {
  position: relative;
  display: grid;
  gap: 0;
  padding: 20px 0;
  background:
    radial-gradient(circle at 50% 12%, rgba(255, 193, 54, 0.16), transparent 24%),
    rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(255, 193, 54, 0.46);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  z-index: 0;
  width: 2px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, transparent, rgba(34, 24, 52, 0.16), rgba(255, 104, 71, 0.34), transparent);
}

.date-card {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 62px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  min-height: 104px;
  padding: 0 28px;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  transition:
    transform 220ms ease,
    box-shadow 220ms ease,
    border-color 220ms ease;
}

.date-card:hover {
  transform: translateY(-3px);
}

.date-card:not(:last-child)::after {
  content: "";
  position: absolute;
  top: calc(50% + 31px);
  bottom: calc(-50% + 31px);
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
  background: rgba(255, 104, 71, 0.2);
}

.date-card span {
  display: inline-grid;
  grid-column: 2;
  grid-row: 1;
  width: 42px;
  height: 42px;
  place-items: center;
  justify-self: center;
  color: var(--surface);
  background: linear-gradient(145deg, var(--orange), var(--gold));
  border: 5px solid #fff7e6;
  border-radius: 999px;
  box-shadow:
    0 0 0 2px rgba(255, 104, 71, 0.18),
    0 14px 24px rgba(255, 104, 71, 0.22);
  font-size: 0.66rem;
  font-weight: 900;
}

.date-card h3 {
  grid-column: 3;
  grid-row: 1;
  min-height: 70px;
  display: flex;
  align-items: center;
  margin: 0;
  padding: 15px 18px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 5px solid var(--teal);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  font-size: clamp(0.92rem, 1.25vw, 1.04rem);
  line-height: 1.2;
}

.date-card:nth-child(even) h3 {
  grid-column: 1;
  grid-row: 1;
  justify-content: flex-end;
  text-align: right;
  border-right: 5px solid var(--teal);
  border-left: 1px solid var(--line);
}

.date-card time {
  display: inline-flex;
  grid-column: 1;
  grid-row: 1;
  justify-self: end;
  width: fit-content;
  align-items: center;
  min-height: 34px;
  padding: 7px 14px;
  color: var(--surface);
  background: linear-gradient(135deg, var(--ink), var(--blue));
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  box-shadow: 0 12px 24px rgba(34, 24, 52, 0.16);
  font-size: 0.78rem;
  font-weight: 900;
}

.date-card:nth-child(even) time {
  grid-column: 3;
  grid-row: 1;
  justify-self: start;
  background: linear-gradient(135deg, var(--orange), #c73bdc);
}

.date-card:hover h3 {
  box-shadow: var(--shadow-lg);
}

.tentative-panel {
  margin-top: 28px;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.tentative-panel .section-heading {
  margin-bottom: 18px;
}

.tentative-list,
.speaker-grid,
.registration-grid {
  display: grid;
  gap: 12px;
}

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

.tentative-list div,
.speaker-card {
  padding: 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition:
    transform 220ms ease,
    box-shadow 220ms ease,
    background 220ms ease;
}

.speaker-card {
  display: flex;
  flex-direction: column;
}

.tentative-list div:hover,
.speaker-card:hover {
  background: var(--surface);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.tentative-list span,
.speaker-card span {
  display: inline-flex;
  min-height: 28px;
  place-items: center;
  align-items: center;
  justify-content: center;
  color: var(--surface);
  background: var(--ink);
  border-radius: 999px;
  padding: 5px 9px;
  font-size: 0.68rem;
  font-weight: 900;
}

.tentative-list strong,
.speaker-card h3 {
  display: block;
  margin: 10px 0 7px;
  font-size: 0.88rem;
  line-height: 1.12;
}

.tentative-list p,
.speaker-card p,
.registration-grid p {
  margin: 0;
  color: var(--muted);
}

.schedule-calendar {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 8px;
  background:
    linear-gradient(90deg, rgba(255, 193, 54, 0.08), transparent 36%),
    #f8fafc;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.schedule-calendar .schedule-item {
  display: grid;
  grid-template-columns: 74px 136px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  min-height: 58px;
  padding: 10px 12px;
  background: var(--surface);
  border: 1px solid rgba(227, 231, 238, 0.9);
  border-left: 4px solid var(--teal);
  border-radius: var(--radius);
  box-shadow: 0 8px 20px rgba(34, 24, 52, 0.05);
}

.schedule-calendar .schedule-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.schedule-calendar .schedule-item span {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  background: #fff2c4;
  border: 1px solid rgba(255, 193, 54, 0.5);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 0.74rem;
  font-weight: 900;
}

.schedule-calendar .schedule-item strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  margin: 0;
  color: var(--surface);
  background: linear-gradient(135deg, var(--ink), var(--blue));
  border-radius: 999px;
  padding: 7px 11px;
  font-size: 0.78rem;
  line-height: 1.15;
  text-align: center;
}

.schedule-calendar .schedule-item p {
  margin: 0;
  color: var(--ink-2);
  font-size: 0.86rem;
  line-height: 1.35;
}

.schedule-calendar .schedule-highlight {
  border-left-color: var(--orange);
  background: linear-gradient(90deg, #fff9e8, var(--surface));
}

.schedule-calendar .schedule-highlight strong {
  background: linear-gradient(135deg, var(--orange), #c73bdc);
}

.schedule-calendar .schedule-break {
  border-left-color: var(--gold);
}

.schedule-calendar .schedule-break strong {
  background: linear-gradient(135deg, var(--gold), var(--orange));
}

.schedule-calendar .schedule-travel {
  border-left-color: var(--blue);
}

.speaker-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.speaker-card img {
  width: 100%;
  height: 250px;
  display: block;
  aspect-ratio: auto;
  object-fit: cover;
  object-position: center top;
  transform-origin: top center;
  flex: 0 0 auto;
  overflow: hidden;
  margin-bottom: 12px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  animation: none;
}

.speaker-photo-juzlinda {
  object-fit: contain;
  object-position: center center;
  padding: 0;
}

.speaker-card-mehmet {
  --speaker-mehmet-position: center 8%;
  --speaker-mehmet-height: 250px;
}

.speaker-photo-mehmet {
  height: var(--speaker-mehmet-height);
  object-position: var(--speaker-mehmet-position);
}

.registration-section {
  background: #fff6df;
}

.registration-grid {
  grid-template-columns: minmax(0, 1fr) minmax(230px, 0.34fr);
  gap: 22px;
  align-items: center;
}

.registration-qr {
  display: block;
  overflow: hidden;
  max-width: 260px;
  justify-self: end;
  padding: 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  transition:
    transform 220ms ease,
    box-shadow 220ms ease;
}

.registration-qr:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.registration-qr img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  animation: image-breathe 5.8s ease-in-out infinite alternate;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.feature-card {
  min-height: 180px;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  transition:
    transform 220ms ease,
    box-shadow 220ms ease;
}

.feature-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}

.feature-card-dark {
  color: var(--surface);
  background:
    linear-gradient(145deg, rgba(34, 24, 52, 1), rgba(51, 37, 77, 1));
  border-color: var(--ink);
}

.feature-card-dark p {
  color: rgba(255, 255, 255, 0.82);
}

.poster-callout {
  background: var(--surface);
}

.poster-callout-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(260px, 0.44fr);
  gap: 30px;
  align-items: center;
}

.poster-thumb {
  display: block;
  overflow: hidden;
  max-height: 420px;
  background: var(--surface);
  border: 8px solid var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  transition:
    transform 260ms ease,
    box-shadow 260ms ease;
}

.poster-thumb:hover {
  transform: translateY(-5px);
  box-shadow: 0 34px 80px rgba(34, 24, 52, 0.24);
}

.poster-thumb img {
  width: 100%;
  animation: image-breathe 7.5s ease-in-out infinite alternate;
}

.reveal-item {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 640ms ease,
    transform 640ms ease;
}

.reveal-item.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.theme-panel.reveal-item.is-visible:hover,
.tentative-list div.reveal-item.is-visible:hover,
.speaker-card.reveal-item.is-visible:hover,
.registration-qr.reveal-item.is-visible:hover {
  transform: translateY(-4px);
}

.date-card.reveal-item.is-visible:hover,
.feature-card.reveal-item.is-visible:hover,
.poster-thumb.reveal-item.is-visible:hover {
  transform: translateY(-5px);
}

.section-contact {
  color: var(--surface);
  background:
    linear-gradient(145deg, rgba(34, 24, 52, 1), rgba(24, 18, 36, 1));
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(300px, 0.8fr);
  gap: 42px;
}

.contact-grid p {
  color: rgba(255, 255, 255, 0.76);
}

.contact-list {
  display: grid;
  gap: 10px;
  align-content: start;
}

.contact-list a,
.contact-list span {
  padding: 14px 16px;
  color: var(--surface);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.16);
  font-weight: 850;
}

.contact-list a:hover {
  background: var(--orange);
}

.site-footer {
  padding: 22px 0;
  color: var(--surface);
  background: #171020;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer-grid span {
  color: rgba(255, 255, 255, 0.86);
  font-weight: 800;
}

.footer-grid .footer-brand {
  color: var(--gold);
  font-weight: 900;
}

.page-hero {
  padding: 36px 0 34px;
  color: var(--surface);
  background: var(--ink);
}

.page-hero .section-shell {
  padding: 24px;
  background: var(--ink-2);
  border-left: 8px solid var(--gold);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.8rem);
}

.page-hero p:not(.eyebrow) {
  max-width: 720px;
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: 0.96rem;
}

.fee-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.fee-card {
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.fee-card-wide {
  grid-column: 1 / -1;
}

.fee-card h3 {
  margin: 0;
  padding: 12px 14px;
  color: var(--ink);
  background: var(--gold);
  font-size: 0.86rem;
  line-height: 1.2;
  text-transform: uppercase;
}

.fee-row {
  display: grid;
  grid-template-columns: 1fr 0.8fr 1fr;
  gap: 12px;
  align-items: center;
  min-height: 46px;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}

.fee-row span:nth-child(2) {
  color: var(--muted);
  font-weight: 800;
}

.fee-row strong {
  color: var(--blue);
  text-align: right;
  white-space: nowrap;
}

.payment-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1fr);
  gap: 28px;
  align-items: center;
}

.payment-box {
  padding: 22px;
  background: var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

.payment-box dl {
  display: grid;
  gap: 4px;
  margin: 0;
}

.payment-box dt {
  margin-top: 14px;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.payment-box dt:first-child {
  margin-top: 0;
}

.payment-box dd {
  margin: 0;
  color: var(--surface);
  font-size: clamp(1rem, 1.8vw, 1.22rem);
  font-weight: 900;
}

.poster-view-section {
  background: var(--soft);
  padding-top: 42px;
}

.poster-frame {
  width: min(980px, calc(100% - 32px));
  margin: 0 auto;
  overflow: hidden;
  background: var(--surface);
  border: 12px solid var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

.poster-frame img {
  width: 100%;
}

@media (max-width: 980px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 210px;
  }

  .hero-facts,
  .split-layout,
  .about-grid,
  .speaker-grid,
  .tentative-list,
  .feature-grid,
  .registration-grid,
  .poster-callout-grid,
  .contact-grid,
  .payment-grid {
    grid-template-columns: 1fr;
  }

  .timeline {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 18px;
  }

  .timeline::before {
    inset: 18px auto 18px 40px;
    width: 2px;
    height: auto;
    background: linear-gradient(180deg, transparent, rgba(255, 104, 71, 0.34), transparent);
  }

  .timeline .date-card {
    grid-template-columns: 50px minmax(0, 1fr);
    gap: 10px 14px;
    order: initial;
    min-height: 0;
    padding: 0 0 8px;
  }

  .date-card:not(:last-child)::after {
    top: 40px;
    right: auto;
    bottom: -28px;
    left: 25px;
    width: 2px;
    height: auto;
    transform: none;
  }

  .date-card span {
    grid-column: 1;
    grid-row: 1 / span 2;
    width: 42px;
    height: 42px;
  }

  .date-card h3,
  .date-card:nth-child(even) h3 {
    grid-column: 2;
    grid-row: 2;
    justify-content: flex-start;
    min-height: 68px;
    text-align: left;
    border-right: 1px solid var(--line);
    border-left: 5px solid var(--teal);
  }

  .date-card time,
  .date-card:nth-child(even) time {
    grid-column: 2;
    grid-row: 1;
    justify-self: start;
  }

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

  .fee-card-wide {
    grid-column: auto;
  }
}

@media (max-width: 920px) {
  html {
    scroll-padding-top: 156px;
  }

  .section {
    scroll-margin-top: 156px;
  }

  .hero,
  .organizer-band,
  .registration-section,
  .section-contact {
    scroll-margin-top: 156px;
  }

  .nav-shell {
    position: relative;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 10px 14px;
    padding: 8px 0;
  }

  .primary-nav {
    display: flex;
    flex-wrap: wrap;
    order: 3;
    width: 100%;
    gap: 5px;
    padding-right: 0;
  }

  .primary-nav a {
    flex: 0 0 auto;
    padding: 8px 11px;
  }

  .primary-nav .nav-cta {
    position: absolute;
    top: 12px;
    right: 0;
    padding: 8px 12px;
  }

  .brand {
    padding-right: 108px;
  }

  .brand-logo {
    width: 118px;
  }
}

@media (max-width: 640px) {
  html {
    scroll-padding-top: 178px;
  }

  body {
    font-size: 14px;
  }

  .brand-copy small {
    display: none;
  }

  .section {
    padding: 34px 0;
    scroll-margin-top: 178px;
  }

  .hero,
  .organizer-band,
  .registration-section,
  .section-contact {
    scroll-margin-top: 178px;
  }

  .hero-inner {
    gap: 12px;
    padding: 22px 0 18px;
  }

  .hero h1 {
    font-size: clamp(1.8rem, 8.6vw, 2.55rem);
  }

  .hero-title {
    max-width: 22rem;
    margin-top: 10px;
    font-size: clamp(0.82rem, 3.4vw, 0.96rem);
    line-height: 1.08;
  }

  .hero-copy {
    max-width: 22rem;
    margin-top: 10px;
    font-size: 0.76rem;
  }

  .hero-actions .button {
    flex: 0 0 auto;
    min-height: 34px;
    padding: 7px 10px;
    font-size: 0.78rem;
  }

  .hero-visual {
    min-height: 98px;
    border-width: 6px;
  }

  .hero-date-badge {
    right: 10px;
    bottom: 10px;
    padding: 8px;
  }

  .hero-date-badge strong {
    font-size: 0.78rem;
  }

  .hero-facts div {
    min-height: 48px;
    padding: 8px 9px;
    border-top-width: 3px;
  }

  .hero-facts strong {
    margin-top: 4px;
    font-size: 0.78rem;
  }

  .hero-facts,
  .timeline,
  .subtheme-list,
  .speaker-grid,
  .registration-grid {
    grid-template-columns: 1fr;
  }

  .schedule-calendar .schedule-item {
    grid-template-columns: 1fr;
    gap: 8px;
    align-items: start;
  }

  .schedule-calendar .schedule-item span,
  .schedule-calendar .schedule-item strong {
    width: fit-content;
    justify-content: flex-start;
  }

  .tentative-panel {
    padding: 14px;
  }

  .organizer-logos {
    margin-right: -16px;
    padding-right: 0;
  }

  .organizer-logos::before,
  .organizer-logos::after {
    width: 38px;
  }

  .organizer-logo-set {
    gap: 12px;
    padding-right: 12px;
  }

  .logo-marquee-set {
    gap: 24px;
    padding-right: 24px;
  }

  .logo-marquee-set img {
    height: 46px;
    max-width: 180px;
  }

  .logo-marquee-set img:nth-child(1),
  .logo-marquee-set img:nth-child(3) {
    max-width: 220px;
  }

  .logo-marquee-set img:nth-child(4),
  .logo-marquee-set img:nth-child(5) {
    height: 52px;
  }

  .logo-card {
    flex-basis: 138px;
    min-height: 76px;
    padding: 8px 10px;
  }

  .logo-card-wide {
    flex-basis: 200px;
  }

  .logo-card-tall {
    flex-basis: 92px;
  }

  .logo-card img {
    max-height: 56px;
  }

  .logo-card-wide img {
    max-height: 58px;
  }

  .logo-card-tall img {
    max-height: 62px;
  }

  .theme-panel,
  .feature-card,
  .payment-box,
  .page-hero .section-shell {
    padding: 15px;
  }

  .speaker-card img {
    height: 220px;
  }

  .registration-qr {
    justify-self: start;
    max-width: 220px;
  }

  .fee-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .fee-row strong {
    text-align: left;
  }

  .page-hero {
    padding: 30px 0 28px;
  }

  .page-hero h1 {
    font-size: clamp(1.9rem, 9vw, 3rem);
  }

  .footer-grid {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 420px) {
  .primary-nav a {
    padding: 8px 10px;
    font-size: 0.82rem;
  }

  .primary-nav .nav-cta {
    padding: 8px 10px;
  }
}

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

  .organizer-track {
    animation-name: collaborator-marquee !important;
    animation-duration: 18s !important;
    animation-timing-function: linear !important;
    animation-iteration-count: infinite !important;
  }

  .reveal-item {
    opacity: 1;
    transform: none;
  }
}