:root {
  --ku-green: #006b3f;
  --ku-green-deep: #003d2b;
  --ku-green-soft: #d9efe4;
  --pulinet-purple: #7b3d92;
  --mint-soft: #bdeed8;
  --mint-light: #eaf9f2;
  --lavender-soft: #d7b8f0;
  --leaf: #39a96b;
  --gold: #d6a84f;
  --ink: #10231d;
  --muted: #5d6b66;
  --paper: #f7faf5;
  --white: #ffffff;
  --line: rgba(16, 35, 29, 0.12);
  --shadow: 0 22px 70px rgba(0, 61, 43, 0.18);
  --radius: 8px;
  --container: min(1180px, calc(100vw - 32px));
  --font-thai: "Prompt", sans-serif;
  --font-display: "Prompt", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-thai);
  line-height: 1.7;
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

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

button {
  font: inherit;
}

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

.skip-link:focus {
  z-index: 1000;
  top: 12px;
  left: 12px;
  width: auto;
  height: auto;
  padding: 10px 14px;
  clip: auto;
  color: var(--white);
  background: var(--ku-green);
  border-radius: var(--radius);
}

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  width: 100%;
  color: #17382c;
  background: linear-gradient(90deg, rgba(189, 238, 216, 0.94) 0%, rgba(157, 230, 199, 0.92) 45%, rgba(215, 184, 240, 0.92) 100%);
  border-bottom: 1px solid rgba(0, 107, 63, 0.14);
  backdrop-filter: blur(18px);
  transition: box-shadow 0.25s ease, background 0.25s ease;
}

.site-header.is-scrolled {
  background: linear-gradient(90deg, rgba(189, 238, 216, 0.98) 0%, rgba(157, 230, 199, 0.96) 45%, rgba(215, 184, 240, 0.96) 100%);
  box-shadow: 0 16px 50px rgba(0, 107, 63, 0.16);
}

.header-inner {
  position: relative;
  width: var(--container);
  min-height: 126px;
  margin: 0 auto;
  display: grid;
  grid-template-rows: auto auto;
}

.header-top {
  min-height: 76px;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  flex: 0 0 auto;
  min-width: 255px;
}

.brand strong,
.footer-brand {
  display: block;
  font-family: var(--font-display);
  font-size: 1.14rem;
  line-height: 1;
  letter-spacing: 0;
}

.brand small {
  display: block;
  margin-top: 4px;
  color: rgba(23, 56, 44, 0.68);
  font-size: 0.75rem;
}

.brand-logos {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.logo-frame {
  display: grid;
  place-items: center;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(0, 107, 63, 0.16);
  box-shadow: 0 10px 24px rgba(0, 107, 63, 0.12);
}

.logo-frame img,
.hero-logo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.ku-logo-frame {
  width: 48px;
  height: 48px;
  border-radius: 50%;
}

.ku-logo-frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.pulinet-logo-frame {
  width: 36px;
  height: 58px;
  padding: 5px 7px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
}

.header-event-pill {
  justify-self: center;
  max-width: min(440px, 100%);
  padding: 9px 18px;
  color: #2f7f5d;
  border: 1px solid rgba(0, 107, 63, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.38);
  font-weight: 800;
  text-align: center;
  white-space: nowrap;
}

.header-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.header-action {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  color: #17382c;
  border: 1px solid rgba(0, 107, 63, 0.16);
  border-radius: var(--radius);
  font-size: 0.86rem;
  font-weight: 800;
  white-space: nowrap;
}

.header-action.primary {
  color: var(--white);
  background: linear-gradient(135deg, #9a6fc8, #3f9a72);
  border-color: transparent;
}

.nav-row {
  display: flex;
  justify-content: center;
  min-height: 50px;
  border-top: 1px solid rgba(0, 107, 63, 0.12);
}

.primary-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 3px;
  width: 100%;
}

.primary-nav > a,
.nav-group > button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 9px;
  color: #17382c;
  background: transparent;
  border: 0;
  border-radius: var(--radius);
  font-size: clamp(0.72rem, 0.68rem + 0.18vw, 0.88rem);
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}

.primary-nav > a:hover,
.nav-group > button:hover,
.nav-group > button[aria-expanded="true"] {
  background: rgba(255, 255, 255, 0.36);
}

.nav-group {
  position: relative;
}

.submenu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 260px;
  padding: 8px;
  background: var(--white);
  color: var(--ink);
  border: 1px solid rgba(0, 61, 43, 0.1);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(8px);
  visibility: hidden;
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
}

.nav-group:hover .submenu,
.nav-group:focus-within .submenu,
.nav-group.is-open .submenu {
  opacity: 1;
  transform: translateY(0);
  visibility: visible;
}

.submenu a {
  display: block;
  padding: 9px 10px;
  border-radius: 6px;
  color: var(--ink);
  font-size: 0.9rem;
  line-height: 1.45;
}

.submenu a:hover,
.submenu a:focus {
  background: var(--ku-green-soft);
  color: var(--ku-green-deep);
  outline: 0;
}

.nav-toggle {
  position: fixed;
  z-index: 102;
  top: 13px;
  right: auto;
  left: min(calc(100vw - 56px), 300px);
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  padding: 0;
  background: rgba(214, 168, 79, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
}

@media (min-width: 1121px) {
  .nav-toggle {
    display: none;
  }
}

.hero {
  position: relative;
  min-height: auto;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 84% 26%, rgba(215, 184, 240, 0.32), transparent 27%),
    radial-gradient(circle at 12% 86%, rgba(157, 230, 199, 0.32), transparent 28%),
    linear-gradient(135deg, #f7fffd, #f0e7ff);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0, 107, 63, 0.035) 1px, transparent 1px),
    linear-gradient(0deg, rgba(142, 99, 190, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.banner-hero {
  padding: 126px 0 0;
}

.hero-banner {
  position: relative;
  z-index: 2;
  width: 100%;
  margin: 0 auto;
  overflow: hidden;
  border: 0;
  border-radius: 0;
  background: var(--white);
  box-shadow: none;
}

.hero-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.conference-overview {
  position: relative;
  padding: clamp(42px, 6vw, 82px) 0 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 82% 10%, rgba(215, 184, 240, 0.42), transparent 30%),
    linear-gradient(180deg, #f4fcf8, var(--paper));
}

.conference-overview::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 107, 63, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(142, 99, 190, 0.045) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(to bottom, black, transparent 80%);
}

.overview-inner,
.conference-stats {
  position: relative;
  z-index: 1;
  width: var(--container);
  margin: 0 auto;
}

.overview-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.95fr);
  gap: clamp(24px, 6vw, 86px);
  align-items: center;
}

.overview-intro h2 {
  max-width: 650px;
  margin: 0;
  color: var(--ku-green-deep);
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.1vw, 4.3rem);
  line-height: 1.03;
  letter-spacing: 0;
}

.overview-intro > p:last-child {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  font-weight: 700;
}

.countdown-panel {
  padding: clamp(22px, 3vw, 34px);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 14px;
  background:
    linear-gradient(135deg, rgba(0, 107, 63, 0.97), rgba(64, 154, 114, 0.92) 58%, rgba(142, 99, 190, 0.93));
  box-shadow: 0 22px 52px rgba(0, 84, 53, 0.2);
}

.countdown-panel > p {
  margin: 0 0 18px;
  font-weight: 800;
}

.countdown-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.countdown-grid div {
  min-width: 0;
  padding: 15px 8px;
  text-align: center;
  border-right: 1px solid rgba(255, 255, 255, 0.24);
}

.countdown-grid div:last-child {
  border-right: 0;
}

.countdown-grid strong,
.conference-stats strong {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3vw, 2.6rem);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.countdown-grid span {
  display: block;
  margin-top: 7px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.78rem;
  font-weight: 700;
}

.overview-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.overview-actions .button {
  min-height: 42px;
  padding: 10px 16px;
  border-radius: var(--radius);
}

.overview-actions .button.primary {
  color: var(--ku-green-deep);
  background: var(--white);
}

.overview-actions .button.secondary {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.64);
}

.conference-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: clamp(38px, 6vw, 72px);
  border: 1px solid rgba(0, 107, 63, 0.15);
  border-bottom: 0;
  border-radius: 12px 12px 0 0;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.78);
}

.conference-stats div {
  min-height: 122px;
  display: grid;
  align-content: center;
  gap: 8px;
  padding: 22px clamp(16px, 2.5vw, 34px);
  border-right: 1px solid rgba(0, 107, 63, 0.15);
}

.conference-stats div:last-child {
  border-right: 0;
}

.conference-stats strong {
  color: var(--ku-green);
}

.conference-stats div:nth-child(3) strong,
.conference-stats div:nth-child(4) strong {
  color: var(--pulinet-purple);
}

.conference-stats span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.ai-grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 34px 34px;
  opacity: 0.22;
}

.hero-logo-pair {
  display: none;
}

.hero-logo {
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 18px 50px rgba(0, 35, 22, 0.24);
}

.hero-logo-ku {
  width: clamp(110px, 12vw, 176px);
  height: clamp(110px, 12vw, 176px);
  border-radius: 50%;
}

.hero-logo-ku img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.hero-logo-pulinet {
  width: clamp(66px, 8vw, 108px);
  height: clamp(150px, 17vw, 250px);
  padding: clamp(12px, 1.8vw, 22px);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(1320px, calc(100vw - 56px));
  margin: 0 auto;
  min-height: min(760px, calc(100dvh - 154px));
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(430px, 1.05fr);
  align-items: center;
  gap: clamp(20px, 3vw, 42px);
  padding: clamp(42px, 5vw, 78px);
  margin-top: 146px;
  margin-bottom: 36px;
  overflow: hidden;
  background: #fbfdfb;
  border-radius: 24px;
  box-shadow: 0 24px 64px rgba(0, 27, 8, 0.28);
}

.hero-content::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(150deg, transparent 0 46%, rgba(0, 107, 63, 0.035) 46.3% 65%, transparent 65.3%),
    linear-gradient(26deg, transparent 0 54%, rgba(0, 107, 63, 0.03) 54.3% 72%, transparent 72.3%);
  pointer-events: none;
}

.hero-content > :not(.nature-visual) {
  position: relative;
  z-index: 3;
  grid-column: 1;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--ku-green);
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow.dark {
  color: var(--ku-green);
}

.hero h1 {
  max-width: 650px;
  margin: 0;
  color: #07801b;
  font-size: clamp(2.4rem, 4.55vw, 5.35rem);
  line-height: 1;
  letter-spacing: 0;
  overflow-wrap: anywhere;
  text-shadow: 1px 2px 0 rgba(0, 59, 17, 0.12);
}

.hero h1 > span {
  display: block;
}

.hero h1 .mobile-line {
  display: inline;
}

.theme-th {
  max-width: 640px;
  margin: 30px 0 4px;
  color: #034816;
  font-size: clamp(1.1rem, 2.2vw, 2rem);
  font-weight: 700;
  overflow-wrap: anywhere;
}

.theme-line {
  display: inline;
}

.theme-en {
  max-width: 660px;
  margin: 0;
  color: #486158;
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.8vw, 1.45rem);
  overflow-wrap: anywhere;
  word-break: normal;
}

.event-strip {
  width: min(640px, 100%);
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid rgba(0, 107, 63, 0.16);
  border-radius: var(--radius);
  background: #f5fbf5;
}

.event-strip div {
  padding: clamp(12px, 2vw, 22px);
  border-right: 1px solid rgba(0, 107, 63, 0.14);
}

.event-strip div:last-child {
  border-right: 0;
}

.event-strip span {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.4vw, 2rem);
  font-weight: 800;
  line-height: 1.1;
}

.event-strip small {
  color: #5c7068;
}

.hero-actions,
.registration-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 800;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  color: var(--white);
  background: #034816;
  box-shadow: 0 14px 34px rgba(0, 72, 22, 0.25);
}

.button.ghost {
  color: #034816;
  border: 1px solid rgba(0, 107, 63, 0.24);
  background: rgba(0, 107, 63, 0.06);
}

.nature-visual {
  position: relative;
  grid-column: 2;
  grid-row: 1 / span 6;
  min-height: min(600px, 58vw);
  align-self: stretch;
}

.visual-badges {
  position: absolute;
  z-index: 4;
  top: 10%;
  right: 10%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 18px 45px rgba(0, 79, 24, 0.12);
}

.visual-badge {
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #fff;
}

.ku-badge {
  width: clamp(62px, 6vw, 88px);
  height: clamp(62px, 6vw, 88px);
  border-radius: 50%;
}

.pulinet-badge {
  width: clamp(42px, 4vw, 58px);
  height: clamp(92px, 9vw, 132px);
  padding: 9px;
  border-radius: 999px;
}

.visual-badge img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.city {
  position: absolute;
  right: -3%;
  bottom: 0;
  width: min(560px, 100%);
  height: 360px;
  display: flex;
  align-items: end;
  gap: 12px;
}

.building {
  position: relative;
  width: 15%;
  border-radius: 6px 6px 0 0;
  background:
    repeating-linear-gradient(0deg, transparent 0 18px, rgba(255, 255, 255, 0.88) 18px 24px, transparent 24px 36px),
    linear-gradient(180deg, #8ddc76, #07801b);
  box-shadow: inset 0 0 0 1px rgba(0, 59, 17, 0.18);
}

.building::after {
  content: "";
  position: absolute;
  inset: 12px 9px auto;
  height: calc(100% - 24px);
  background: repeating-linear-gradient(0deg, transparent 0 24px, rgba(255, 255, 255, 0.72) 24px 29px, transparent 29px 38px);
}

.b1 { height: 34%; }
.b2 { height: 52%; background-color: #4cb847; }
.b3 { height: 76%; background-color: #83d66a; }
.b4 { height: 62%; background-color: #0c7f1c; }
.b5 { height: 88%; background-color: #48b13f; }
.b6 { height: 46%; background-color: #88d46c; }

.cloud {
  position: absolute;
  z-index: 2;
  width: 72px;
  height: 28px;
  border-radius: 999px;
  background: #129323;
  box-shadow:
    18px -12px 0 4px #129323,
    38px -3px 0 1px #129323,
    -16px 3px 0 -2px #129323;
}

.cloud-one {
  top: 31%;
  right: 30%;
}

.cloud-two {
  top: 46%;
  right: 75%;
  transform: scale(0.62);
}

.shrub {
  position: absolute;
  z-index: 5;
  bottom: 0;
  border-radius: 999px 999px 0 0;
  background: #48b13f;
  box-shadow:
    34px -18px 0 8px #72c85d,
    78px -2px 0 12px #0a7c1b,
    118px -28px 0 2px #55b848;
}

.shrub-one {
  right: -2%;
  width: 270px;
  height: 100px;
}

.shrub-two {
  left: 7%;
  width: 250px;
  height: 96px;
  transform: scale(0.95);
}

.leaf {
  position: absolute;
  z-index: 6;
  width: 104px;
  height: 42px;
  border-radius: 100% 0 100% 0;
  background:
    linear-gradient(135deg, transparent 48%, rgba(255, 255, 255, 0.86) 49% 51%, transparent 52%),
    #087b16;
  transform-origin: 10% 90%;
}

.leaf::before,
.leaf::after {
  content: "";
  position: absolute;
  inset: 8px 18px;
  border-top: 2px solid rgba(255, 255, 255, 0.78);
  transform: rotate(18deg);
}

.leaf::after {
  transform: rotate(-20deg);
}

.leaf-one {
  right: -6%;
  top: -2%;
  transform: rotate(-28deg) scale(1.45);
}

.leaf-two {
  left: 5%;
  bottom: -3%;
  transform: rotate(-72deg) scale(2.15);
}

.leaf-three {
  left: 23%;
  bottom: -5%;
  transform: rotate(-42deg) scale(1.56);
}

.button.light {
  color: var(--ku-green-deep);
  background: var(--white);
}

.button.outline-light {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.46);
}

.section {
  width: var(--container);
  margin: 0 auto;
  padding: clamp(64px, 9vw, 116px) 0;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 30px;
}

.section h2 {
  margin: 0;
  font-size: clamp(1.65rem, 3vw, 3.1rem);
  line-height: 1.18;
}

.intro-grid,
.topic-grid,
.gallery-grid,
.footer-main {
  display: grid;
  gap: 18px;
}

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

.feature-card,
.topic-card,
.date-panel,
.visual-panel,
.gallery-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 10px 34px rgba(0, 61, 43, 0.08);
}

.feature-card {
  min-height: 240px;
  padding: clamp(20px, 3vw, 30px);
}

.card-number {
  display: inline-flex;
  margin-bottom: 24px;
  color: var(--gold);
  font-family: var(--font-display);
  font-weight: 800;
}

.feature-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 1.35rem;
}

.feature-card p,
.registration-copy p,
.visual-panel p {
  margin: 0;
  color: var(--muted);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 22px;
  align-items: stretch;
}

.date-panel,
.visual-panel {
  padding: clamp(22px, 4vw, 42px);
}

.timeline {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: minmax(120px, 170px) 1fr;
  gap: 16px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.timeline time {
  color: var(--ku-green);
  font-weight: 800;
}

.visual-panel {
  min-height: 430px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  color: var(--white);
  background:
    linear-gradient(160deg, rgba(0, 61, 43, 0.94), rgba(0, 107, 63, 0.76)),
    linear-gradient(45deg, var(--ku-green-deep), var(--leaf));
}

.visual-panel h3 {
  margin: 28px 0 8px;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 3rem);
  line-height: 1;
}

.visual-panel p {
  color: rgba(255, 255, 255, 0.76);
}

.visual-orbit {
  position: relative;
  width: min(320px, 80vw);
  aspect-ratio: 1;
  margin: auto;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
}

.visual-orbit::before,
.visual-orbit::after {
  content: "";
  position: absolute;
  inset: 16%;
  border: 1px solid rgba(214, 168, 79, 0.36);
  border-radius: 50%;
}

.visual-orbit::after {
  inset: 32%;
}

.visual-orbit span {
  position: absolute;
  display: grid;
  place-items: center;
  width: 76px;
  height: 76px;
  color: var(--ku-green-deep);
  background: var(--gold);
  border-radius: 50%;
  font-family: var(--font-display);
  font-weight: 800;
}

.visual-orbit span:nth-child(1) {
  top: 8%;
  left: 13%;
}

.visual-orbit span:nth-child(2) {
  right: 1%;
  top: 36%;
  background: var(--white);
}

.visual-orbit span:nth-child(3) {
  left: 38%;
  bottom: 0;
  color: var(--white);
  background: var(--ku-green);
  border: 1px solid rgba(255, 255, 255, 0.28);
}

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

.topic-card {
  min-height: 210px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 20px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.topic-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 107, 63, 0.42);
}

.topic-card strong {
  color: var(--ku-green);
  font-family: var(--font-display);
  font-size: 2rem;
  line-height: 1;
}

.topic-card span {
  font-weight: 800;
  line-height: 1.35;
}

.topic-card small {
  color: var(--muted);
}

.registration-band {
  width: 100%;
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 720px) auto;
  justify-content: center;
  align-items: center;
  gap: clamp(20px, 8vw, 100px);
  padding-left: 32px;
  padding-right: 32px;
  color: var(--white);
  background: linear-gradient(110deg, var(--ku-green-deep), var(--ku-green));
}

.registration-copy h2 {
  color: var(--white);
}

.registration-copy p {
  color: rgba(255, 255, 255, 0.76);
}

.gallery-grid {
  grid-template-columns: 1.2fr 0.8fr;
}

.gallery-item {
  margin: 0;
  padding: 10px;
}

.gallery-item.large {
  grid-row: span 2;
}

.image-frame {
  min-height: 220px;
  border-radius: 6px;
}

.gallery-item.large .image-frame {
  min-height: 470px;
}

.image-frame-1 {
  background:
    linear-gradient(135deg, rgba(0, 61, 43, 0.18), rgba(214, 168, 79, 0.42)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.28) 0 2px, transparent 2px 22px),
    linear-gradient(135deg, #dff4e9, #ffffff 48%, #0a7048);
}

.image-frame-2 {
  background:
    linear-gradient(140deg, rgba(0, 107, 63, 0.8), rgba(16, 35, 29, 0.2)),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.24) 0 1px, transparent 1px 18px),
    #0f6b45;
}

.image-frame-3 {
  background:
    linear-gradient(160deg, rgba(214, 168, 79, 0.82), rgba(255, 255, 255, 0.28)),
    repeating-linear-gradient(45deg, rgba(0, 61, 43, 0.18) 0 2px, transparent 2px 18px),
    #eaf6ef;
}

.gallery-item figcaption {
  padding: 12px 4px 2px;
  color: var(--muted);
  font-weight: 700;
}

.sponsor-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.sponsor-row span {
  min-height: 86px;
  display: grid;
  place-items: center;
  color: var(--muted);
  background: var(--white);
  border: 1px dashed rgba(0, 107, 63, 0.28);
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-weight: 800;
}

.site-footer {
  color: rgba(255, 255, 255, 0.78);
  background: #06231a;
}

.footer-main {
  width: var(--container);
  grid-template-columns: 1.25fr repeat(3, 1fr);
  margin: 0 auto;
  padding: clamp(44px, 7vw, 82px) 0;
}

.footer-brand {
  color: var(--white);
  font-size: 1.5rem;
}

.site-footer h2 {
  margin: 0 0 12px;
  color: var(--white);
  font-size: 1rem;
}

.site-footer ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer a:hover {
  color: var(--gold);
}

.site-footer address {
  font-style: normal;
}

.footer-bottom {
  width: var(--container);
  min-height: 62px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.92rem;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.58s ease, transform 0.58s ease;
}

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

@media (max-width: 1120px) {
  .header-inner {
    min-height: 70px;
    display: block;
  }

  .header-top {
    min-height: 70px;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
    padding-right: 56px;
  }

  .header-event-pill,
  .header-actions {
    display: none;
  }

  .nav-row {
    display: block;
    min-height: 0;
    border-top: 0;
  }

  .nav-toggle {
    position: fixed;
    z-index: 102;
    top: 13px;
    right: auto;
    left: min(calc(100vw - 56px), 300px);
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    padding: 0;
    background: rgba(255, 255, 255, 0.52);
    border: 1px solid rgba(0, 107, 63, 0.18);
    border-radius: var(--radius);
  }

  .nav-toggle span:not(.sr-only) {
    width: 20px;
    height: 2px;
    display: block;
    grid-area: 1 / 1;
    background: #17382c;
    border-radius: 999px;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }

  .nav-toggle span:nth-child(1) {
    transform: translateY(-7px);
  }

  .nav-toggle span:nth-child(3) {
    transform: translateY(7px);
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg);
  }

  .primary-nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    height: calc(100dvh - 70px);
    display: none;
    overflow: auto;
    padding: 12px 16px 28px;
    background: linear-gradient(180deg, rgba(189, 238, 216, 0.98), rgba(215, 184, 240, 0.98));
  }

  body.nav-open .primary-nav {
    display: grid;
    align-content: start;
    grid-auto-rows: max-content;
    gap: 4px;
  }

  body.nav-open {
    overflow: hidden;
  }

  .primary-nav > a,
  .nav-group > button {
    width: 100%;
    justify-content: space-between;
    min-height: 48px;
    padding: 10px 12px;
    font-size: 0.98rem;
  }

  .nav-group {
    width: 100%;
  }

  .submenu {
    position: static;
    display: none;
    min-width: 0;
    margin: 0 0 8px;
    box-shadow: none;
    transform: none;
    opacity: 1;
    visibility: visible;
  }

  .nav-group.is-open .submenu {
    display: block;
  }

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

  .split-section,
  .registration-band {
    grid-template-columns: 1fr;
  }

  .banner-hero {
    padding-top: 70px;
  }

  .overview-inner {
    grid-template-columns: 1fr;
  }

  .overview-intro {
    max-width: 680px;
  }

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

  .hero-content > :not(.nature-visual),
  .nature-visual {
    grid-column: 1;
  }

  .nature-visual {
    min-height: 300px;
    grid-row: auto;
  }
}

@media (max-width: 760px) {
  :root {
    --container: min(100vw - 24px, 1180px);
  }

  .brand {
    min-width: 0;
    gap: 10px;
    overflow: hidden;
  }

  .brand small {
    display: none;
  }

  .brand strong {
    font-size: 0.96rem;
    white-space: nowrap;
  }

  .ku-logo-frame {
    width: 44px;
    height: 44px;
  }

  .pulinet-logo-frame {
    width: 34px;
    height: 52px;
    padding: 5px 7px;
  }

  .hero-logo-pair {
    display: none;
  }

  .hero {
    min-height: auto;
    padding: 0;
  }

  .banner-hero {
    padding: 70px 0 0;
  }

  .hero-banner {
    width: 100%;
    border-radius: 0;
  }

  .conference-overview {
    padding-top: 38px;
  }

  .overview-inner {
    gap: 22px;
  }

  .overview-intro h2 {
    font-size: clamp(1.85rem, 9vw, 2.55rem);
  }

  .countdown-panel {
    padding: 20px 16px;
  }

  .countdown-grid strong {
    font-size: 1.55rem;
  }

  .countdown-grid div {
    padding: 13px 4px;
  }

  .countdown-grid span {
    font-size: 0.7rem;
  }

  .overview-actions .button {
    flex: 1 1 180px;
  }

  .conference-stats {
    grid-template-columns: repeat(2, 1fr);
    margin-top: 34px;
  }

  .conference-stats div:nth-child(2) {
    border-right: 0;
  }

  .conference-stats div:nth-child(-n + 2) {
    border-bottom: 1px solid rgba(0, 107, 63, 0.15);
  }

  .conference-stats div {
    min-height: 106px;
    padding: 18px;
  }

  .hero-content {
    width: min(100vw - 24px, 1180px);
    min-height: auto;
    margin-top: 94px;
    margin-bottom: 28px;
    padding: 26px 18px 28px;
    border-radius: 20px;
  }

  .hero h1 {
    max-width: 100%;
    font-size: clamp(1.58rem, 8.7vw, 2.05rem);
    line-height: 1.12;
  }

  .hero h1 .mobile-line {
    display: block;
  }

  .theme-th {
    font-size: clamp(1.02rem, 5.6vw, 1.28rem);
  }

  .theme-en {
    color: #5b6e66;
    max-width: 100%;
    font-size: 0.95rem;
    line-height: 1.35;
    overflow-wrap: break-word;
  }

  .theme-line {
    display: block;
  }

  .nature-visual {
    display: none;
  }

  .event-strip,
  .intro-grid,
  .topic-grid,
  .gallery-grid,
  .sponsor-row,
  .footer-main {
    grid-template-columns: 1fr;
  }

  .event-strip div {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  }

  .event-strip div:last-child {
    border-bottom: 0;
  }

  .timeline li {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .gallery-item.large .image-frame {
    min-height: 270px;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
    padding: 18px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

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

/* KU Tech visual system — inspired by the supplied Turnitin guide. */
:root {
  --ku-green: #00a64f;
  --ku-green-deep: #004d27;
  --ku-green-soft: rgba(0, 166, 79, 0.12);
  --pulinet-purple: #7b3d92;
  --mint-soft: #75eaa6;
  --mint-light: #dcffea;
  --leaf: #37d866;
  --gold: #f5c842;
  --ink: #e8f8ed;
  --muted: #91b99c;
  --paper: #020c05;
  --white: #ffffff;
  --line: rgba(75, 228, 124, 0.2);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.38);
  --radius: 14px;
  --font-display: "Prompt", sans-serif;
}

body {
  color: var(--ink);
  background: var(--paper);
}

body::before {
  content: "";
  position: fixed;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 80% 8%, rgba(0, 166, 79, 0.12), transparent 28rem),
    radial-gradient(circle at 8% 32%, rgba(92, 58, 150, 0.12), transparent 24rem),
    repeating-linear-gradient(0deg, transparent 0 3px, rgba(255, 255, 255, 0.011) 3px 4px);
}

.site-header,
.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(2, 12, 5, 0.82);
  border-bottom-color: var(--line);
  box-shadow: none;
}

.site-header.is-scrolled {
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.36);
}

.header-inner {
  min-height: 116px;
}

.header-top {
  min-height: 66px;
}

.brand strong,
.footer-brand {
  color: var(--white);
  letter-spacing: 0.025em;
}

.brand small { color: var(--muted); }

.logo-frame {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(57, 211, 83, 0.45);
  box-shadow: 0 0 18px rgba(0, 166, 79, 0.2);
}

.header-event-pill {
  color: var(--mint-soft);
  background: rgba(0, 166, 79, 0.09);
  border-color: rgba(57, 211, 83, 0.32);
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.header-event-pill span,
.countdown-panel > p span {
  width: 7px;
  height: 7px;
  display: inline-block;
  margin-right: 8px;
  vertical-align: middle;
  background: var(--leaf);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--leaf);
  animation: status-pulse 1.8s ease-in-out infinite;
}

.header-action {
  color: var(--mint-light);
  border-color: var(--line);
  border-radius: 8px;
}

.header-action.primary {
  color: #031308;
  background: linear-gradient(135deg, #39d353, #00a64f);
  box-shadow: 0 0 24px rgba(0, 166, 79, 0.25);
}

.nav-row { border-top-color: rgba(75, 228, 124, 0.13); }

.primary-nav > a,
.nav-group > button { color: var(--muted); }

.primary-nav > a:hover,
.nav-group > button:hover,
.nav-group > button[aria-expanded="true"] {
  color: var(--mint-light);
  background: rgba(0, 166, 79, 0.13);
}

.submenu {
  color: var(--ink);
  background: #092112;
  border-color: var(--line);
  box-shadow: var(--shadow);
}

.submenu a { color: var(--muted); }
.submenu a:hover,
.submenu a:focus { color: var(--mint-light); background: rgba(0, 166, 79, 0.14); }

.hero {
  background: #020c05;
}

.banner-hero {
  padding-top: 116px;
  background:
    linear-gradient(rgba(0, 166, 79, 0.075) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 166, 79, 0.075) 1px, transparent 1px),
    radial-gradient(circle at 50% 18%, rgba(0, 166, 79, 0.2), transparent 42%),
    #020c05;
  background-size: 56px 56px, 56px 56px, auto, auto;
}

.hero::after { display: none; }

.hero-banner {
  width: min(1340px, calc(100vw - 48px));
  margin: clamp(26px, 4vw, 54px) auto;
  overflow: hidden;
  border: 1px solid rgba(57, 211, 83, 0.38);
  border-radius: 18px;
  background: #061409;
  box-shadow: 0 0 0 7px rgba(0, 166, 79, 0.035), 0 34px 76px rgba(0, 0, 0, 0.5);
}

.hero-banner::before {
  content: "PULINET 2027 // AI & HUMANISM";
  position: absolute;
  z-index: 2;
  top: 14px;
  left: 16px;
  padding: 5px 10px;
  color: #b6f6c8;
  background: rgba(2, 12, 5, 0.74);
  border: 1px solid rgba(57, 211, 83, 0.35);
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.hero-banner img { filter: saturate(0.95) contrast(1.03); }

.conference-overview {
  padding-top: clamp(54px, 8vw, 112px);
  background:
    radial-gradient(circle at 83% 25%, rgba(0, 166, 79, 0.14), transparent 28%),
    linear-gradient(180deg, #041107, #020c05);
}

.conference-overview::before {
  background-image:
    linear-gradient(rgba(0, 166, 79, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 166, 79, 0.07) 1px, transparent 1px);
}

.overview-intro h2,
.section h2 { color: var(--white); }

.overview-intro h2 {
  font-size: clamp(2.4rem, 5vw, 5.2rem);
  letter-spacing: -0.04em;
  text-shadow: 0 0 34px rgba(0, 166, 79, 0.16);
}

.overview-intro > p:last-child { color: var(--muted); }

.eyebrow,
.eyebrow.dark {
  color: var(--leaf);
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
}

.countdown-panel {
  position: relative;
  overflow: hidden;
  color: var(--ink);
  border-color: rgba(57, 211, 83, 0.35);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(8, 39, 18, 0.96), rgba(4, 22, 10, 0.96));
  box-shadow: 0 0 0 1px rgba(0, 166, 79, 0.07), 0 26px 56px rgba(0, 0, 0, 0.32);
}

.countdown-panel::after {
  content: "";
  position: absolute;
  inset: auto -50px -100px auto;
  width: 230px;
  height: 230px;
  border: 1px solid rgba(57, 211, 83, 0.25);
  border-radius: 50%;
  box-shadow: 0 0 0 34px rgba(57, 211, 83, 0.025), 0 0 0 68px rgba(57, 211, 83, 0.02);
  pointer-events: none;
}

.countdown-panel > p {
  position: relative;
  z-index: 1;
  color: var(--mint-soft);
  font-family: var(--font-display);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.countdown-grid { position: relative; z-index: 1; border-color: rgba(57, 211, 83, 0.22); }
.countdown-grid div { border-color: rgba(57, 211, 83, 0.18); }
.countdown-grid strong { color: var(--leaf); text-shadow: 0 0 18px rgba(57, 211, 83, 0.26); }
.countdown-grid span { color: var(--muted); }
.overview-actions { position: relative; z-index: 1; }

.button {
  border-radius: 8px;
  font-family: var(--font-display);
  letter-spacing: 0.01em;
}

.button.primary,
.button.light {
  color: #031308;
  background: linear-gradient(135deg, #39d353, #00a64f);
  box-shadow: 0 0 26px rgba(0, 166, 79, 0.24);
}

.button.secondary,
.button.ghost,
.button.outline-light {
  color: var(--mint-light);
  border-color: rgba(57, 211, 83, 0.4);
  background: rgba(0, 166, 79, 0.06);
}

.conference-stats {
  border-color: var(--line);
  background: rgba(6, 28, 13, 0.74);
  border-radius: 14px 14px 0 0;
}

.conference-stats div { border-color: var(--line); }
.conference-stats strong,
.conference-stats div:nth-child(3) strong,
.conference-stats div:nth-child(4) strong { color: var(--leaf); }
.conference-stats span { color: var(--muted); }

.section { position: relative; }
.intro-band { padding-top: clamp(82px, 11vw, 144px); }

.feature-card,
.topic-card,
.date-panel,
.visual-panel,
.gallery-item {
  border-color: var(--line);
  background: linear-gradient(150deg, rgba(11, 37, 18, 0.94), rgba(5, 22, 10, 0.94));
  box-shadow: none;
}

.feature-card,
.topic-card,
.gallery-item { transition: transform 0.24s ease, border-color 0.24s ease, box-shadow 0.24s ease; }

.feature-card:hover,
.topic-card:hover,
.gallery-item:hover {
  transform: translateY(-5px);
  border-color: rgba(57, 211, 83, 0.6);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.26), 0 0 28px rgba(0, 166, 79, 0.09);
}

.card-number { color: var(--leaf); font-family: var(--font-display); letter-spacing: 0.1em; }
.feature-card h3 { color: var(--white); }
.feature-card p,
.registration-copy p,
.visual-panel p,
.topic-card small,
.gallery-item figcaption { color: var(--muted); }

.timeline li { border-color: var(--line); }
.timeline time { color: var(--leaf); }

.visual-panel {
  border-color: rgba(57, 211, 83, 0.36);
  background:
    radial-gradient(circle at 52% 31%, rgba(57, 211, 83, 0.24), transparent 24%),
    linear-gradient(160deg, #092812, #031308);
}
.visual-panel h3 { color: var(--white); }
.visual-panel p { color: var(--muted); }
.visual-orbit { border-color: rgba(57, 211, 83, 0.3); }
.visual-orbit::before,
.visual-orbit::after { border-color: rgba(57, 211, 83, 0.28); }
.visual-orbit span { color: #031308; background: var(--leaf); box-shadow: 0 0 20px rgba(57, 211, 83, 0.26); }
.visual-orbit span:nth-child(2) { color: #073216; background: #c5ffd5; }
.visual-orbit span:nth-child(3) { color: var(--mint-light); background: #067c37; }

.topic-card strong { color: var(--leaf); }
.topic-card span { color: var(--ink); }

.registration-band {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(rgba(57, 211, 83, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 211, 83, 0.055) 1px, transparent 1px),
    linear-gradient(120deg, #062711, #031308 64%, #082212);
  background-size: 44px 44px, 44px 44px, auto;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.registration-copy h2 { color: var(--white); }
.registration-copy p { color: var(--muted); }

.image-frame { border: 1px solid rgba(57, 211, 83, 0.2); }
.image-frame-1 { background: linear-gradient(135deg, rgba(0, 166, 79, 0.14), rgba(4, 15, 7, 0.32)), repeating-linear-gradient(90deg, rgba(57, 211, 83, 0.18) 0 1px, transparent 1px 22px), linear-gradient(135deg, #061c0c, #0d4d25); }
.image-frame-2 { background: linear-gradient(140deg, rgba(0, 166, 79, 0.7), rgba(2, 12, 5, 0.82)), repeating-linear-gradient(0deg, rgba(57, 211, 83, 0.13) 0 1px, transparent 1px 18px), #082b13; }
.image-frame-3 { background: linear-gradient(160deg, rgba(57, 211, 83, 0.58), rgba(2, 12, 5, 0.76)), repeating-linear-gradient(45deg, rgba(57, 211, 83, 0.16) 0 1px, transparent 1px 18px), #0a3718; }

.sponsor-row span {
  color: var(--muted);
  background: rgba(7, 29, 13, 0.78);
  border-color: rgba(57, 211, 83, 0.32);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #010804;
}
.site-footer a:hover { color: var(--leaf); }
.footer-bottom { border-color: var(--line); }

@keyframes status-pulse {
  0%, 100% { opacity: 0.55; box-shadow: 0 0 4px var(--leaf); }
  50% { opacity: 1; box-shadow: 0 0 15px var(--leaf); }
}

@media (max-width: 1120px) {
  .header-inner { min-height: 70px; }
  .nav-toggle {
    right: 12px;
    left: auto;
    color: var(--mint-light);
    background: rgba(0, 166, 79, 0.16);
    border-color: var(--line);
  }
  .nav-toggle span:not(.sr-only) { background: var(--mint-light); }
  .primary-nav {
    top: 70px;
    background: linear-gradient(180deg, #061409, #020c05);
  }
  .banner-hero { padding-top: 70px; }
}

@media (max-width: 760px) {
  .hero-banner {
    width: 100%;
    margin: 0;
    border-right: 0;
    border-left: 0;
    border-radius: 0;
  }
  .hero-banner::before { top: 9px; left: 9px; font-size: 0.53rem; }
  .conference-stats div:nth-child(-n + 2) { border-bottom-color: var(--line); }
}

/* Bright AI direction: replaces the photographic banner with an original CSS visual. */
:root {
  --ku-green: #087b42;
  --ku-green-deep: #064427;
  --ku-green-soft: #d9f8e5;
  --pulinet-purple: #7b3d92;
  --mint-soft: #15965a;
  --mint-light: #e8fff1;
  --leaf: #12a85a;
  --gold: #e4a63a;
  --ink: #123324;
  --muted: #537062;
  --paper: #f5fff8;
  --white: #ffffff;
  --line: rgba(8, 123, 66, 0.15);
  --shadow: 0 24px 60px rgba(9, 88, 46, 0.12);
}

body { background: var(--paper); color: var(--ink); }
body::before {
  background:
    radial-gradient(circle at 88% 10%, rgba(120, 238, 183, 0.2), transparent 25rem),
    radial-gradient(circle at 8% 32%, rgba(157, 128, 245, 0.1), transparent 24rem);
}

.site-header,
.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.84);
  border-bottom-color: rgba(8, 123, 66, 0.12);
}
.site-header.is-scrolled { box-shadow: 0 14px 40px rgba(9, 88, 46, 0.1); }
.brand strong,
.footer-brand { color: var(--ku-green-deep); }
.brand small { color: var(--muted); }
.logo-frame { border-color: rgba(8, 123, 66, 0.17); box-shadow: 0 8px 18px rgba(9, 88, 46, 0.1); }
.header-event-pill { color: var(--ku-green); background: #effff4; border-color: rgba(8, 123, 66, 0.17); }
.header-event-pill span,
.countdown-panel > p span { background: var(--leaf); box-shadow: 0 0 8px rgba(18, 168, 90, 0.45); }
.header-action { color: var(--ku-green-deep); border-color: rgba(8, 123, 66, 0.18); }
.header-action.primary,
.button.primary,
.button.light { color: #fff; background: linear-gradient(135deg, #087b42, #16ad63); }
.nav-row { border-top-color: rgba(8, 123, 66, 0.1); }
.primary-nav > a,
.nav-group > button { color: #315746; }
.primary-nav > a:hover,
.nav-group > button:hover,
.nav-group > button[aria-expanded="true"] { color: var(--ku-green-deep); background: #e6faed; }
.submenu { background: #fff; border-color: rgba(8, 123, 66, 0.14); box-shadow: var(--shadow); }
.submenu a { color: #315746; }
.submenu a:hover,
.submenu a:focus { color: var(--ku-green-deep); background: #e6faed; }

.hero.ai-hero {
  position: relative;
  min-height: auto;
  padding: 116px 0 0;
  overflow: hidden;
  color: var(--ink);
  background:
    linear-gradient(110deg, #fbfffc 0%, #f0fff6 47%, #d8ffeb 100%);
}

.ai-hero .hero-grid {
  display: block;
  position: absolute;
  inset: 0;
  opacity: 0.72;
  background-image:
    linear-gradient(rgba(8, 123, 66, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(8, 123, 66, 0.08) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: linear-gradient(90deg, #000 12%, transparent 80%);
}

.floating-dots {
  position: absolute;
  z-index: 1;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.floating-dots span {
  position: absolute;
  bottom: -16px;
  width: 5px;
  height: 5px;
  display: block;
  border-radius: 50%;
  background: rgba(12, 153, 80, 0.52);
  box-shadow: 0 0 10px rgba(28, 197, 105, 0.5);
  animation: float-data-dot linear infinite;
}

.floating-dots span:nth-child(1) { left: 6%; width: 4px; height: 4px; animation-duration: 15s; animation-delay: -4s; }
.floating-dots span:nth-child(2) { left: 13%; animation-duration: 20s; animation-delay: -15s; }
.floating-dots span:nth-child(3) { left: 19%; width: 3px; height: 3px; animation-duration: 12s; animation-delay: -7s; }
.floating-dots span:nth-child(4) { left: 26%; width: 6px; height: 6px; animation-duration: 18s; animation-delay: -10s; }
.floating-dots span:nth-child(5) { left: 32%; width: 3px; height: 3px; animation-duration: 13s; animation-delay: -2s; }
.floating-dots span:nth-child(6) { left: 38%; width: 4px; height: 4px; animation-duration: 22s; animation-delay: -18s; }
.floating-dots span:nth-child(7) { left: 44%; animation-duration: 17s; animation-delay: -12s; }
.floating-dots span:nth-child(8) { left: 51%; width: 6px; height: 6px; animation-duration: 19s; animation-delay: -5s; }
.floating-dots span:nth-child(9) { left: 57%; width: 3px; height: 3px; animation-duration: 14s; animation-delay: -9s; }
.floating-dots span:nth-child(10) { left: 63%; width: 4px; height: 4px; animation-duration: 21s; animation-delay: -16s; }
.floating-dots span:nth-child(11) { left: 69%; width: 3px; height: 3px; animation-duration: 16s; animation-delay: -6s; }
.floating-dots span:nth-child(12) { left: 74%; animation-duration: 23s; animation-delay: -19s; }
.floating-dots span:nth-child(13) { left: 80%; width: 6px; height: 6px; animation-duration: 17s; animation-delay: -11s; }
.floating-dots span:nth-child(14) { left: 85%; width: 3px; height: 3px; animation-duration: 12s; animation-delay: -8s; }
.floating-dots span:nth-child(15) { left: 91%; width: 3px; height: 3px; animation-duration: 20s; animation-delay: -14s; }
.floating-dots span:nth-child(16) { left: 96%; width: 5px; height: 5px; animation-duration: 18s; animation-delay: -3s; }
.floating-dots span:nth-child(17) { left: 10%; width: 3px; height: 3px; animation-duration: 24s; animation-delay: -21s; }
.floating-dots span:nth-child(18) { left: 35%; width: 5px; height: 5px; animation-duration: 16s; animation-delay: -13s; }
.floating-dots span:nth-child(19) { left: 48%; width: 3px; height: 3px; animation-duration: 21s; animation-delay: -7s; }
.floating-dots span:nth-child(20) { left: 67%; width: 4px; height: 4px; animation-duration: 14s; animation-delay: -10s; }
.floating-dots span:nth-child(21) { left: 78%; width: 3px; height: 3px; animation-duration: 22s; animation-delay: -17s; }
.floating-dots span:nth-child(22) { left: 94%; width: 4px; height: 4px; animation-duration: 15s; animation-delay: -5s; }

@keyframes float-data-dot {
  0% { transform: translate3d(0, 0, 0) scale(0.35); opacity: 0; }
  10% { opacity: 0.65; }
  58% { transform: translate3d(11px, -62vh, 0) scale(0.95); opacity: 0.42; }
  100% { transform: translate3d(-8px, -120vh, 0) scale(1.15); opacity: 0; }
}

.hero-aurora {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(4px);
}
.aurora-one { width: 42rem; height: 42rem; top: -19rem; right: -8rem; background: rgba(21, 210, 118, 0.25); }
.aurora-two { width: 22rem; height: 22rem; bottom: -12rem; left: 32%; background: rgba(122, 91, 227, 0.1); }

.hero-inner {
  position: relative;
  z-index: 1;
  width: var(--container);
  min-height: 640px;
  display: grid;
  grid-template-columns: minmax(0, 1.28fr) minmax(360px, 0.72fr);
  align-items: center;
  gap: clamp(16px, 2.5vw, 42px);
  margin: 0 auto;
  padding: clamp(48px, 5vw, 72px) 0;
}

.hero-copy { position: relative; z-index: 2; }
@media (min-width: 1121px) {
  .hero-copy { transform: translateY(-72px); }
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 22px;
  color: var(--ku-green);
  font-family: var(--font-display);
  font-size: clamp(0.67rem, 0.75vw, 0.78rem);
  font-weight: 800;
  letter-spacing: 0.13em;
}
.hero-kicker span { width: 9px; height: 9px; border-radius: 50%; background: #29d276; box-shadow: 0 0 0 6px rgba(41, 210, 118, 0.16); }
.hero-copy h1 {
  max-width: 700px;
  margin: 0;
  color: #103725;
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 6.1vw, 6.6rem);
  font-weight: 800;
  line-height: 0.88;
  letter-spacing: -0.07em;
}
.hero-copy h1 em { color: #168e52; font-size: 0.62em; font-style: normal; letter-spacing: -0.055em; }
.hero-copy h1.conference-title {
  max-width: none;
  color: #073923;
  font-family: var(--font-thai);
  font-size: clamp(2.55rem, 3.7vw, 4.45rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: 0.012em;
}
.conference-title span {
  display: block;
  white-space: nowrap;
}
.conference-title span + span {
  margin-top: clamp(18px, 1.6vw, 28px);
}
.conference-title span:last-child {
  color: #119151;
  font-size: 1.1em;
}
.hero-theme {
  max-width: none;
  margin: 28px 0 7px;
  color: #075d35;
  font-size: clamp(0.98rem, 1.25vw, 1.18rem);
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: 0;
  opacity: 1;
  visibility: visible;
}
.hero-theme span {
  position: relative;
  z-index: 3;
  display: block;
  color: inherit;
  white-space: nowrap;
}
.hero-detail { margin: 0; color: var(--muted); font-size: 0.94rem; }
.hero-actions { margin-top: 30px; }
.hero-actions .button { min-height: 50px; }
.hero-actions .button.primary span { margin-left: 8px; font-size: 1.12rem; }
.button.ghost { color: var(--ku-green-deep); border-color: rgba(8, 123, 66, 0.24); background: rgba(255, 255, 255, 0.55); }

.hero-ai-visual {
  position: relative;
  min-height: 500px;
  display: grid;
  place-items: center;
}

@media (min-width: 1121px) {
  .hero-ai-visual {
    transform: translateY(-70px) scale(0.84);
    transform-origin: center;
  }
}
.hero-ai-visual::before {
  content: "";
  position: absolute;
  width: min(38vw, 490px);
  aspect-ratio: 1;
  border: 1px solid rgba(8, 123, 66, 0.16);
  border-radius: 50%;
  box-shadow: 0 0 0 48px rgba(32, 203, 113, 0.045), 0 0 0 96px rgba(32, 203, 113, 0.035);
}
.ai-orb {
  position: relative;
  z-index: 1;
  width: clamp(205px, 25vw, 310px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #f4fffa, #beffe0 54%, #42d986 100%);
  box-shadow: inset -22px -24px 50px rgba(0, 110, 53, 0.16), 0 20px 60px rgba(13, 150, 75, 0.23);
}
.orb-core {
  position: relative;
  z-index: 3;
  color: #065d31;
  font-family: var(--font-display);
  font-size: clamp(3rem, 5.2vw, 5.1rem);
  font-weight: 800;
  letter-spacing: -0.08em;
  transition: opacity 0.45s ease, color 0.45s ease, font-size 0.45s ease, letter-spacing 0.45s ease;
}
.orb-core.is-theme {
  font-size: clamp(0.75rem, 1.75vw, 1.7rem);
  letter-spacing: 0;
  line-height: 1.15;
  white-space: nowrap;
}
.orb-core.is-pulinet {
  color: var(--pulinet-purple);
  font-size: clamp(1.55rem, 2.9vw, 2.9rem);
  letter-spacing: 0;
}
.orb-core.is-changing { opacity: 0; }

@media (prefers-reduced-motion: reduce) {
  .orb-core {
    transition: none;
  }
}
.orb-ring { position: absolute; border: 1px solid rgba(2, 110, 51, 0.38); border-radius: 50%; }
.ring-one { width: 132%; height: 44%; transform: rotate(-28deg); }
.ring-two { width: 44%; height: 132%; transform: rotate(35deg); }
.orb-node {
  position: absolute;
  z-index: 2;
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  color: #fff;
  border: 2px solid #fff;
  border-radius: 50%;
  background: #0b9b51;
  box-shadow: 0 3px 8px rgba(5, 85, 40, 0.22);
  font-family: var(--font-display);
  font-size: 0.58rem;
  font-weight: 800;
  line-height: 1;
}
.node-one,
.node-two,
.node-three,
.node-four {
  top: 0;
  left: 0;
  will-change: transform;
}
.node-two { background: #7657c9; }
.node-three { background: #0e805d; }
.node-four { background: #e4a63a; }
.visual-label,
.signal-card {
  position: absolute;
  z-index: 3;
  color: #21553a;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(8, 123, 66, 0.16);
  border-radius: 10px;
  box-shadow: 0 14px 30px rgba(8, 99, 48, 0.08);
  backdrop-filter: blur(10px);
  animation: hero-topic-drift 7s ease-in-out infinite;
  will-change: transform;
}
.visual-label { padding: 10px 13px; font-family: var(--font-display); font-size: 0.66rem; font-weight: 700; letter-spacing: 0.11em; line-height: 1.35; }
.visual-label strong { color: #14a258; font-size: 1.2rem; }
.label-right { top: 22%; right: 0; --topic-drift-x: -9px; --topic-drift-y: 7px; animation-duration: 7.2s; animation-delay: -2.1s; }
.signal-card { padding: 8px 12px; font-family: var(--font-display); font-size: 0.62rem; font-weight: 800; letter-spacing: 0.1em; }
.signal-card span { color: #17a35a; margin-right: 7px; }
.card-one { left: 0; bottom: 25%; --topic-drift-x: 8px; --topic-drift-y: -10px; animation-duration: 6.4s; animation-delay: -3.8s; }
.card-two { right: 2%; bottom: 12%; --topic-drift-x: -7px; --topic-drift-y: -9px; animation-duration: 7.6s; animation-delay: -1.2s; }
.card-three { left: 22%; bottom: 0; --topic-drift-x: 8px; --topic-drift-y: -7px; animation-duration: 6.9s; animation-delay: -4.7s; }

@keyframes hero-topic-drift {
  0%,
  100% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(var(--topic-drift-x), var(--topic-drift-y), 0); }
}

@media (prefers-reduced-motion: reduce) {
  .visual-label,
  .signal-card {
    animation: none;
    transform: none;
    will-change: auto;
  }
}

.conference-overview {
  color: var(--ink);
  background: linear-gradient(180deg, #f0fff6, #f9fffb);
}
.conference-overview::before { background-image: linear-gradient(rgba(8, 123, 66, 0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(8, 123, 66, 0.06) 1px, transparent 1px); }
.overview-intro h2,
.section h2 { color: var(--ink); text-shadow: none; }
.overview-intro h2 { font-size: clamp(2.25rem, 4.5vw, 4.7rem); }
.overview-intro > p:last-child { color: var(--muted); }
.eyebrow,
.eyebrow.dark { color: var(--ku-green); }
.countdown-panel { color: var(--ink); border-color: rgba(8, 123, 66, 0.15); background: rgba(255, 255, 255, 0.88); box-shadow: var(--shadow); }
.countdown-panel::after { border-color: rgba(8, 123, 66, 0.14); box-shadow: 0 0 0 34px rgba(18, 168, 90, 0.035), 0 0 0 68px rgba(18, 168, 90, 0.02); }
.countdown-panel > p { color: var(--ku-green); }
.countdown-grid { border-color: rgba(8, 123, 66, 0.13); }
.countdown-grid div { border-color: rgba(8, 123, 66, 0.13); }
.countdown-grid strong { color: var(--ku-green); text-shadow: none; }
.countdown-grid span { color: var(--muted); }
.overview-actions .button.primary { color: #fff; background: linear-gradient(135deg, #087b42, #16ad63); }
.overview-actions .button.secondary { color: var(--ku-green-deep); border-color: rgba(8, 123, 66, 0.26); background: #effff4; }
.conference-stats { border-color: rgba(8, 123, 66, 0.13); background: rgba(255, 255, 255, 0.8); }
.conference-stats div { border-color: rgba(8, 123, 66, 0.13); }
.conference-stats strong,
.conference-stats div:nth-child(3) strong,
.conference-stats div:nth-child(4) strong { color: var(--ku-green); }
.conference-stats span { color: var(--muted); }

.feature-card,
.topic-card,
.date-panel,
.visual-panel,
.gallery-item { border-color: rgba(8, 123, 66, 0.13); background: rgba(255, 255, 255, 0.88); box-shadow: 0 12px 30px rgba(9, 88, 46, 0.055); }
.feature-card:hover,
.topic-card:hover,
.gallery-item:hover { border-color: rgba(8, 123, 66, 0.34); box-shadow: 0 18px 40px rgba(9, 88, 46, 0.1); }
.feature-card h3,
.visual-panel h3 { color: var(--ink); }
.card-number,
.topic-card strong { color: var(--ku-green); }
.feature-card p,
.registration-copy p,
.visual-panel p,
.topic-card small,
.gallery-item figcaption { color: var(--muted); }
.timeline li { border-color: rgba(8, 123, 66, 0.13); }
.timeline time { color: var(--ku-green); }
.visual-panel { background: linear-gradient(145deg, #ddffea, #b8f8d2); border-color: rgba(8, 123, 66, 0.18); }
.visual-orbit { border-color: rgba(8, 123, 66, 0.23); }
.visual-orbit::before,
.visual-orbit::after { border-color: rgba(8, 123, 66, 0.22); }
.visual-orbit span { color: #fff; background: var(--ku-green); box-shadow: none; }
.visual-orbit span:nth-child(2) { color: #0c5730; background: #fff; }
.visual-orbit span:nth-child(3) { color: #fff; background: #7657c9; }
.topic-card span { color: var(--ink); }
.topic-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.registration-band { background: linear-gradient(120deg, #087b42, #12a85a 62%, #5ad88c); border: 0; }
.registration-copy h2 { color: #fff; }
.registration-copy p { color: rgba(255, 255, 255, 0.86); }
.image-frame { border-color: rgba(8, 123, 66, 0.14); }
.image-frame-1 { background: linear-gradient(135deg, rgba(255,255,255,0.3), rgba(47, 214, 126, 0.18)), repeating-linear-gradient(90deg, rgba(8,123,66,0.14) 0 1px, transparent 1px 22px), linear-gradient(135deg, #dfffee, #95ebbb); }
.image-frame-2 { background: linear-gradient(140deg, rgba(13, 143, 78, 0.54), rgba(235, 255, 243, 0.38)), repeating-linear-gradient(0deg, rgba(255,255,255,0.4) 0 1px, transparent 1px 18px), #4acb83; }
.image-frame-3 { background: linear-gradient(160deg, rgba(123, 91, 202, 0.38), rgba(255,255,255,0.48)), repeating-linear-gradient(45deg, rgba(8,123,66,0.13) 0 1px, transparent 1px 18px), #ccf8dc; }
.sponsor-row span { color: var(--muted); background: #fff; border-color: rgba(8, 123, 66, 0.28); }
.site-footer { color: rgba(255,255,255,0.72); border: 0; background: #08371f; }
.footer-brand,
.site-footer h2 { color: #fff; }
.site-footer a:hover { color: #85f5b2; }
.footer-bottom { border-color: rgba(255,255,255,0.15); }

/* Conference landing layout: the countdown becomes a focal card between hero and content. */
.hero.ai-hero {
  min-height: 740px;
  margin-bottom: 155px;
  overflow: visible;
}

.hero-inner { min-height: 624px; }

.hero-countdown-wrap {
  position: absolute;
  z-index: 6;
  left: 50%;
  bottom: -155px;
  width: min(820px, calc(100vw - 48px));
  transform: translateX(-50%);
}

.hero-countdown-wrap .countdown-panel {
  padding: 30px 34px;
  border-radius: 0;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 20px 48px rgba(7, 86, 43, 0.14);
}

.hero-countdown-wrap .countdown-grid strong {
  font-size: clamp(2.1rem, 4vw, 3.35rem);
}

.hero-countdown-wrap .overview-actions { justify-content: center; }

@media (max-width: 1120px) {
  .hero.ai-hero {
    min-height: auto;
    display: block;
    margin-bottom: 0;
    overflow: hidden;
  }
  .hero-inner { min-height: auto; }
  .hero-countdown-wrap {
    position: relative;
    left: auto;
    bottom: auto;
    width: min(720px, calc(100vw - 48px));
    margin: 0 auto;
    padding: 0 0 52px;
    transform: none;
  }
}

@media (max-width: 760px) {
  .hero-countdown-wrap { width: calc(100vw - 32px); padding-bottom: 38px; }
  .hero-countdown-wrap .countdown-panel { padding: 22px 16px; }
  .hero-countdown-wrap .countdown-grid strong { font-size: clamp(1.6rem, 8vw, 2.3rem); }
}

@media (max-width: 1120px) {
  .nav-toggle { background: #effff4; border-color: rgba(8, 123, 66, 0.16); }
  .nav-toggle span:not(.sr-only) { background: var(--ku-green-deep); }
  .primary-nav { background: linear-gradient(180deg, #fff, #effff4); }
  .hero.ai-hero { min-height: auto; padding-top: 70px; }
  .hero-inner { min-height: auto; grid-template-columns: 1fr; padding: 48px 24px; }
  .hero-copy { max-width: 720px; }
  .conference-title span,
  .hero-theme span { white-space: normal; }
  .hero-ai-visual { min-height: 380px; }
  .topic-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .hero.ai-hero { min-height: auto; }
  .hero-inner { min-height: auto; padding: 36px 16px 42px; }
  .hero-copy h1 { font-size: clamp(3.25rem, 15vw, 4.7rem); }
  .hero-copy h1.conference-title { font-size: clamp(1.75rem, 8.65vw, 2.55rem); line-height: 1.2; }
  .conference-title span:last-child { white-space: nowrap; }
  .hero-theme { max-width: 100%; margin-top: 22px; font-size: 1rem; line-height: 1.5; }
  .hero-ai-visual { min-height: 320px; margin-top: 6px; }
  .hero-ai-visual::before { width: 250px; }
  .ai-orb { width: 190px; }
  .visual-label { font-size: 0.52rem; padding: 7px 9px; }
  .label-right { top: 18%; right: 0; }
  .signal-card { font-size: 0.49rem; padding: 6px 8px; }
  .card-one { left: 0; bottom: 21%; }
  .card-two { right: 0; bottom: 7%; }
  .card-three { left: 25%; bottom: -3%; }
  .topic-grid { grid-template-columns: 1fr; }
}

/* Header lockup: KU seal, PULINET network symbol, then conference title. */
.brand {
  gap: 12px;
  min-width: 326px;
}

.brand-logos { gap: 11px; }

.brand .ku-logo-frame {
  width: 50px;
  height: 50px;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.brand-divider {
  width: 1px;
  height: 43px;
  display: block;
  background: rgba(10, 71, 39, 0.42);
}

.pulinet-mark {
  width: 22px;
  height: 45px;
  display: grid;
  place-items: center;
}

.pulinet-mark img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

.brand-copy { line-height: 1; }

.brand .brand-copy strong {
  color: #143625;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.brand .brand-copy .brand-year {
  color: var(--pulinet-purple);
}

.brand .brand-copy small {
  margin-top: 7px;
  color: #597466;
  font-family: var(--font-display);
  font-size: 0.77rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.22;
}

@media (max-width: 760px) {
  .brand { min-width: 0; gap: 8px; }
  .brand-logos { gap: 7px; }
  .brand .ku-logo-frame { width: 39px; height: 39px; }
  .brand-divider { height: 34px; }
  .pulinet-mark { width: 16px; height: 35px; }
  .brand .brand-copy strong { font-size: 1.04rem; }
  .brand .brand-copy small { display: block; margin-top: 4px; font-size: 0.59rem; }
}

/* Shared two-slide hero carousel. The countdown stays outside this stage. */
.hero-carousel-stage {
  position: relative;
  width: 100%;
  min-width: 0;
  height: 624px;
  overflow: hidden;
  isolation: isolate;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 560ms ease, visibility 560ms ease;
}

.hero-slide.is-active {
  z-index: 1;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.hero-slide--banner {
  background: #087976;
}

.hero-slide--banner::before {
  content: "";
  position: absolute;
  z-index: 0;
  inset: -24px;
  background-image: url("assets/banner1920x832.jpg");
  background-image: image-set(
    url("assets/banner1920x832.webp") type("image/webp"),
    url("assets/banner1920x832.jpg") type("image/jpeg")
  );
  background-position: center;
  background-size: cover;
  filter: blur(20px) brightness(0.6) saturate(1.12);
  transform: scale(1.06);
}

.hero-slide--banner picture {
  position: relative;
  z-index: 0;
  display: block;
  width: 100%;
  height: 100%;
}

.hero-slide--banner::after {
  content: "";
  position: absolute;
  z-index: 1;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(0, 54, 53, 0.58) 0%,
    rgba(0, 54, 53, 0.38) 48%,
    rgba(0, 54, 53, 0) 74%
  );
  pointer-events: none;
}

.hero-slide--banner img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.banner-copy {
  position: absolute;
  z-index: 2;
  top: 6.5%;
  left: 4.35vw;
  width: min(82vw, 1400px);
  color: #fff;
  text-shadow: 0 3px 18px rgba(0, 61, 59, 0.28);
  pointer-events: none;
}

.banner-kicker {
  display: flex;
  align-items: center;
  gap: 11px;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(0.72rem, 1vw, 0.95rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.2;
}

.banner-kicker span {
  width: 13px;
  height: 13px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: #dce51a;
  box-shadow: 0 0 0 9px rgba(220, 229, 26, 0.22);
}

.banner-title {
  margin: clamp(20px, 2.7vw, 34px) 0 0;
  font-family: var(--font-thai);
  font-size: clamp(2.75rem, 5.2vw, 5.45rem);
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.16;
}

.hero h1.banner-title {
  max-width: none;
  margin: clamp(20px, 2.7vw, 34px) 0 0;
  color: inherit;
  font-size: clamp(2.75rem, 5.2vw, 5.45rem);
  line-height: 1.16;
  overflow-wrap: normal;
  text-shadow: inherit;
}

.banner-title span,
.banner-title strong {
  display: block;
  font: inherit;
}

.banner-title strong {
  margin-top: 0.08em;
}

.banner-theme {
  display: inline-block;
  max-width: 100%;
  margin: clamp(22px, 3vw, 38px) 0 0;
  padding: 9px 18px;
  color: #083f3e;
  background: linear-gradient(90deg, #dce51a, rgba(220, 229, 26, 0.68));
  font-family: var(--font-display);
  font-size: clamp(0.9rem, 1.35vw, 1.25rem);
  font-weight: 800;
  line-height: 1.3;
  text-shadow: none;
}

.banner-detail {
  margin: 14px 0 0;
  font-size: clamp(0.85rem, 1.18vw, 1.1rem);
  font-weight: 700;
  line-height: 1.4;
}

@media (min-width: 1121px) {
  .hero-slide--intro .hero-ai-visual {
    grid-column: 2;
  }
}

.hero-carousel-controls {
  position: absolute;
  z-index: 4;
  right: clamp(18px, 3vw, 44px);
  bottom: 22px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 999px;
  background: rgba(3, 72, 70, 0.76);
  box-shadow: 0 10px 28px rgba(2, 42, 41, 0.2);
  backdrop-filter: blur(10px);
}

.hero-carousel-controls button {
  min-width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  padding: 0;
  color: #fff;
  font: 700 1rem/1 var(--font-display);
  border: 0;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  transition: background-color 180ms ease, transform 180ms ease;
}

.hero-carousel-controls button:hover {
  background: rgba(255, 255, 255, 0.18);
}

.hero-carousel-controls button:active {
  transform: scale(0.92);
}

.hero-carousel-controls button:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 2px;
}

.hero-carousel-dots {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 3px;
}

.hero-carousel-dots button {
  min-width: 32px;
  width: 32px;
  height: 32px;
  border: 0;
  background: transparent;
}

.hero-carousel-dots button::before {
  content: "";
  width: 9px;
  height: 9px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 50%;
  transition: width 180ms ease, background-color 180ms ease;
}

.hero-carousel-dots button[aria-current="true"]::before {
  width: 24px;
  border-radius: 999px;
  background: #fff;
}

.hero-carousel-toggle {
  font-size: 0.78rem !important;
}

@media (min-width: 1121px) {
  .hero.ai-hero {
    min-height: auto;
    display: block;
    margin-bottom: 0;
    overflow: hidden;
  }

  .hero-carousel-stage {
    height: auto;
    aspect-ratio: 16 / 9;
  }

  .hero-slide--intro .hero-inner {
    min-height: 100%;
  }

  .hero-countdown-wrap {
    position: relative;
    left: auto;
    bottom: auto;
    width: min(820px, calc(100vw - 48px));
    margin: 32px auto 0;
    padding-bottom: 72px;
    transform: none;
  }
}

@media (max-width: 1120px) {
  .hero-carousel-stage {
    height: 700px;
    margin-bottom: 72px;
    overflow: visible;
  }

  .hero-slide {
    overflow: hidden;
  }

  .hero-carousel-controls {
    bottom: -62px;
  }
}

@media (max-width: 760px) {
  .hero-carousel-stage {
    height: 680px;
  }

  .hero-slide--banner img {
    object-fit: contain;
  }

  .banner-copy {
    top: 50%;
    right: 16px;
    left: 16px;
    width: auto;
    transform: translateY(-50%);
  }

  .banner-kicker {
    gap: 8px;
    font-size: 0.75rem;
    letter-spacing: 0.055em;
  }

  .banner-kicker span {
    width: 9px;
    height: 9px;
    box-shadow: 0 0 0 6px rgba(220, 229, 26, 0.22);
  }

  .banner-title {
    margin-top: 16px;
    font-size: clamp(1.55rem, 8vw, 2.15rem);
    letter-spacing: 0;
    line-height: 1.18;
  }

  .hero h1.banner-title {
    margin-top: 16px;
    font-size: clamp(1.55rem, 8vw, 2.15rem);
    line-height: 1.18;
    overflow-wrap: anywhere;
  }

  .banner-theme {
    margin-top: 17px;
    padding: 7px 10px;
    font-size: 0.75rem;
  }

  .banner-detail {
    margin-top: 10px;
    font-size: 0.75rem;
  }

  .hero-slide--banner::after {
    background: rgba(0, 54, 53, 0.36);
  }

  .hero-slide--intro::after {
    content: "";
    position: absolute;
    z-index: 2;
    inset: 0;
    background: linear-gradient(
      180deg,
      rgba(0, 54, 53, 0.16) 0%,
      rgba(0, 54, 53, 0.58) 36%,
      rgba(0, 54, 53, 0.12) 78%
    );
    pointer-events: none;
  }

  .hero-carousel-controls {
    right: 50%;
    bottom: -62px;
    transform: translateX(50%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-slide {
    transition: none;
  }

  .hero-carousel-controls button {
    transition: none;
  }
}