:root {
  --bg: #070b19;
  --surface: #0e1530;
  --ink: #f4f7ff;
  --muted: #94a1bd;
  --line: rgba(174, 194, 255, 0.16);
  --cyan: #69eff3;
  --violet: #9473ff;
  --lime: #d7ff5f;
  --font: "Manrope", sans-serif;
  --display: "Space Grotesk", sans-serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  overflow-x: hidden;
}
.loader {
  position: fixed;
  inset: 0;
  background: #070b19;
  z-index: 100;
  display: grid;
  place-content: center;
  gap: 14px;
  text-align: center;
  transition:
    opacity 0.7s,
    visibility 0.7s;
}
.loader.done {
  opacity: 0;
  visibility: hidden;
}
.loader-mark {
  font: 700 3rem var(--display);
  letter-spacing: -0.16em;
}
.loader-mark span {
  color: var(--cyan);
}
.loader p {
  font: 500 10px "DM Mono";
  color: var(--muted);
  letter-spacing: 0.2em;
}
.loader i {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  animation: load 1.5s infinite;
}
@keyframes load {
  0% {
    transform: scaleX(0.1);
  }
  100% {
    transform: scaleX(1);
  }
}
.scroll-progress {
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  position: fixed;
  top: 0;
  left: 0;
  z-index: 99;
  width: 0;
}
.cursor-glow {
  position: fixed;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(81, 230, 245, 0.08),
    transparent 65%
  );
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 1;
}
.announcement {
  height: 31px;
  background: var(--cyan);
  color: #071019;
  display: flex;
  gap: 12px;
  align-items: center;
  overflow: hidden;
  padding: 0 5vw;
  font: 500 10px "DM Mono";
  letter-spacing: 0.16em;
  white-space: nowrap;
}
.announcement div {
  animation: marquee 24s linear infinite;
}
.announcement b {
  margin: 0 20px;
}
@keyframes marquee {
  to {
    transform: translateX(-20%);
  }
}
.pulse {
  width: 6px;
  height: 6px;
  background: #071019;
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(7, 16, 25, 0.18);
  flex: none;
}
.nav {
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5vw;
  position: absolute;
  top: 31px;
  left: 0;
  right: 0;
  z-index: 30;
  transition: 0.3s;
}
.nav.stuck {
  position: fixed;
  top: 0;
  background: rgba(7, 11, 25, 0.78);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.brand {
  color: var(--ink);
  text-decoration: none;
  font-family: var(--display);
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.brand span {
  font-weight: 700;
  font-size: 25px;
  letter-spacing: -0.15em;
}
.brand small {
  font: 500 8px "DM Mono";
  color: var(--cyan);
  letter-spacing: 0;
}
.nav nav {
  display: flex;
  gap: 28px;
}
.nav nav a,
.nav-actions a {
  font-size: 12px;
  color: var(--muted);
  text-decoration: none;
  transition: 0.2s;
}
.nav nav a:hover,
.nav nav .active {
  color: var(--ink);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.lang,
.theme {
  border: 0;
  background: none;
  color: var(--muted);
  cursor: pointer;
  font: 11px var(--font);
}
.theme {
  font-size: 19px;
}
.register-mini {
  background: var(--ink);
  color: #0a1022 !important;
  padding: 10px 15px;
  font-weight: 800 !important;
}
.register-mini span {
  color: #4f49aa;
}
.hamburger {
  display: none;
  background: 0;
  border: 0;
  width: 30px;
}
.hamburger i {
  display: block;
  height: 2px;
  background: var(--ink);
  margin: 6px 0;
}
.hero {
  min-height: calc(100svh - 31px);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
}
.grid {
  position: absolute;
  inset: -30%;
  background:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 60px 60px;
  transform: perspective(600px) rotateX(60deg);
  mask-image: linear-gradient(transparent, black 30%, transparent 78%);
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(1px);
}
.orb-a {
  width: 580px;
  height: 580px;
  background: radial-gradient(circle, rgba(71, 92, 253, 0.3), transparent 68%);
  right: -120px;
  top: 4%;
}
.orb-b {
  width: 440px;
  height: 440px;
  background: radial-gradient(
    circle,
    rgba(80, 235, 238, 0.17),
    transparent 70%
  );
  left: -180px;
  bottom: -150px;
}
.particles {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(var(--cyan) 1px, transparent 1px),
    radial-gradient(var(--violet) 1px, transparent 1px);
  background-size:
    110px 120px,
    170px 150px;
  background-position:
    10px 5px,
    80px 60px;
  opacity: 0.5;
  animation: drift 15s linear infinite;
}
@keyframes drift {
  to {
    background-position:
      120px 125px,
      250px 210px;
  }
}
.hero-inner {
  max-width: 1300px;
  width: 100%;
  margin: auto;
  padding: 110px 7vw 60px;
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.eyebrow,
.section-kicker {
  font: 500 10px "DM Mono";
  letter-spacing: 0.18em;
  color: var(--cyan);
  text-transform: uppercase;
}
.eyebrow span {
  display: inline-block;
  width: 22px;
  height: 1px;
  vertical-align: middle;
  background: var(--cyan);
  margin-right: 9px;
}
.emblem {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 30px 0 10px;
}
.emblem-ring {
  border: 1px solid var(--cyan);
  color: var(--cyan);
  border-radius: 50%;
  width: 44px;
  height: 44px;
  display: grid;
  place-content: center;
  font: 700 15px var(--display);
}
.emblem-ring small {
  font-size: 6px;
}
.emblem > span {
  font: 500 8px "DM Mono";
  color: var(--muted);
  letter-spacing: 0.1em;
}
.hero h1 {
  font: 700 clamp(65px, 10vw, 150px)/0.8 var(--display);
  letter-spacing: -0.095em;
  margin: 0;
}
.hero h1 span {
  color: var(--cyan);
}
.hero h1 em,
.display em,
.contact h2 em {
  font-family: var(--display);
  font-style: normal;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--violet);
}
.hero-sub {
  font: 500 13px "DM Mono";
  color: var(--lime);
  letter-spacing: 0.15em;
  margin: 25px 0;
}
.hero-sub b {
  color: var(--muted);
  padding: 0 6px;
}
.hero-text {
  color: var(--muted);
  line-height: 1.75;
  font-size: 14px;
  max-width: 430px;
}
.hero-buttons {
  display: flex;
  gap: 12px;
  margin: 28px 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 14px 20px;
  text-decoration: none;
  border: 1px solid var(--line);
  color: var(--ink);
  font: 700 11px var(--font);
  cursor: pointer;
  transition: 0.25s;
}
.btn.primary {
  background: var(--cyan);
  color: #071019;
  border-color: var(--cyan);
  box-shadow: 0 0 30px rgba(104, 239, 243, 0.15);
}
.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 7px 24px rgba(0, 0, 0, 0.25);
}
.btn.primary span {
  font-size: 18px;
}
.event-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 44px;
}
.event-meta > div {
  display: flex;
  align-items: center;
  gap: 8px;
}
.event-meta b {
  font: 700 18px var(--display);
  letter-spacing: -0.05em;
}
.event-meta span {
  font: 500 8px "DM Mono";
  color: var(--muted);
  line-height: 1.4;
}
.event-meta i {
  width: 1px;
  height: 28px;
  background: var(--line);
}
.hero-visual {
  width: 43%;
  height: 520px;
  position: relative;
}
.core {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(
    circle at 38% 35%,
    #718cff,
    #23206d 50%,
    #10153b 72%
  );
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  box-shadow:
    0 0 50px #5d68e860,
    0 0 150px #46e4e540;
}
.core-inner {
  position: absolute;
  inset: 18px;
  border: 1px solid #75ecee80;
  border-radius: 50%;
  display: grid;
  place-content: center;
  animation: spin 20s linear infinite;
}
.core-inner span {
  font: 700 40px var(--display);
  letter-spacing: -0.17em;
}
.core-inner i {
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--lime);
  border-radius: 50%;
  left: 50%;
  top: -4px;
  box-shadow: 0 0 12px var(--lime);
}
.core-inner i:nth-of-type(2) {
  top: 50%;
  left: auto;
  right: -4px;
}
.core-inner i:nth-of-type(3) {
  left: 50%;
  top: auto;
  bottom: -4px;
}
.core-inner i:nth-of-type(4) {
  top: 50%;
  left: -4px;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
.orbit {
  position: absolute;
  border: 1px solid rgba(116, 160, 255, 0.25);
  border-radius: 50%;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) rotate(-24deg);
}
.o1 {
  width: 390px;
  height: 150px;
}
.o2 {
  width: 160px;
  height: 400px;
}
.signal-card {
  position: absolute;
  padding: 12px 15px;
  background: rgba(19, 28, 64, 0.66);
  border: 1px solid rgba(140, 181, 255, 0.27);
  backdrop-filter: blur(10px);
  font: 10px "DM Mono";
  display: flex;
  flex-direction: column;
  gap: 6px;
  animation: float 4s ease-in-out infinite;
}
.signal-card span {
  color: var(--cyan);
}
.signal-card b {
  letter-spacing: 0.12em;
}
.c1 {
  top: 11%;
  left: 2%;
}
.c2 {
  bottom: 16%;
  right: 5%;
  animation-delay: -1s;
}
.c3 {
  right: 9%;
  top: 25%;
  animation-delay: -2s;
}
@keyframes float {
  50% {
    transform: translateY(-12px);
  }
}
.scroll-cue {
  position: absolute;
  z-index: 4;
  bottom: 22px;
  left: 7vw;
  font: 9px "DM Mono";
  letter-spacing: 0.16em;
  color: var(--muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.scroll-cue span {
  height: 30px;
  width: 1px;
  background: var(--cyan);
}
.section {
  padding: 140px 7vw;
  max-width: 1440px;
  margin: auto;
}
.section-kicker {
  margin-bottom: 22px;
}
.display {
  font: 700 clamp(45px, 6.2vw, 92px)/0.96 var(--display);
  letter-spacing: -0.075em;
  margin: 0;
}
.about {
  border-top: 1px solid var(--line);
}
.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8vw;
}
.about-copy {
  padding-top: 12px;
}
.about-copy p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
  margin: 0 0 20px;
}
.text-link {
  color: var(--cyan);
  text-decoration: none;
  font: 700 12px var(--font);
}
.text-link span {
  margin-left: 8px;
  font-size: 18px;
}
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  margin-top: 90px;
}
.stats > div {
  padding: 24px 10px;
  border-right: 1px solid var(--line);
  display: flex;
  gap: 12px;
  align-items: center;
}
.stats strong {
  font: 700 36px var(--display);
  letter-spacing: -0.08em;
}
.stats span {
  font: 10px "DM Mono";
  color: var(--muted);
  line-height: 1.5;
}
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 55px;
}
.filter-wrap {
  width: 230px;
}
.filter-wrap label {
  display: block;
  font: 10px "DM Mono";
  color: var(--muted);
  margin-bottom: 9px;
}
.filter-wrap input {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: none;
  padding: 9px 0;
  color: var(--ink);
  outline: 0;
  font: 12px var(--font);
}
.event-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.event-card {
  min-height: 460px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: linear-gradient(145deg, #151d41, #0a1026);
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  transition: 0.35s;
}
.event-card:before {
  content: "";
  position: absolute;
  width: 210px;
  height: 210px;
  background: radial-gradient(
    circle,
    rgba(117, 104, 255, 0.23),
    transparent 67%
  );
  top: -65px;
  right: -80px;
}
.event-card:hover {
  transform: translateY(-9px);
  border-color: var(--cyan);
  box-shadow: 0 15px 40px #0005;
}
.event-card.featured {
  background: linear-gradient(145deg, #17435e, #0d1a3f);
}
.card-top,
.card-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}
.card-top > span:first-child {
  font: 10px "DM Mono";
  color: var(--muted);
}
.icon {
  font-size: 27px;
  color: var(--cyan);
}
.tag {
  font: 10px "DM Mono";
  letter-spacing: 0.13em;
  color: var(--lime);
}
.event-card h3 {
  font: 700 36px/0.92 var(--display);
  letter-spacing: -0.075em;
  margin: 12px 0;
}
.event-card > div:nth-child(2) > p:last-child {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}
.rules {
  border: 0;
  background: none;
  color: var(--muted);
  padding: 0;
  font: 10px "DM Mono";
  text-decoration: underline;
  cursor: pointer;
}
.card-bottom a {
  color: var(--ink);
  font: 700 11px var(--font);
  text-decoration: none;
}
.card-bottom b {
  color: var(--cyan);
  font-size: 17px;
}
.nontech {
  background: #0a0f23;
  max-width: none;
  padding-left: 7vw;
  padding-right: 7vw;
}
.head-note {
  color: var(--muted);
  max-width: 240px;
  font-size: 13px;
  line-height: 1.7;
}
.non-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.non-card {
  background: #0a0f23;
  padding: 26px;
  min-height: 310px;
  transition: 0.25s;
}
.non-card:hover {
  background: #131b3b;
}
.non-card.accent {
  background: linear-gradient(135deg, #412f74, #1d194a);
}
.non-card > span {
  font: 10px "DM Mono";
  color: var(--muted);
}
.non-icon {
  font-size: 40px;
  color: var(--cyan);
  margin: 35px 0;
}
.non-card h3 {
  font: 700 26px var(--display);
  letter-spacing: -0.06em;
  margin: 0;
}
.non-card p {
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
  min-height: 45px;
}
.non-card a {
  color: var(--ink);
  text-decoration: none;
  font: 700 11px var(--font);
}
.timeline {
  margin-top: 65px;
  border-top: 1px solid var(--line);
}
.timeline > div {
  display: grid;
  grid-template-columns: 1fr 30px 3fr;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding: 17px 0;
}
.timeline time {
  font: 500 12px "DM Mono";
  color: var(--cyan);
}
.timeline span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--violet);
  box-shadow: 0 0 12px var(--violet);
}
.timeline p {
  font-size: 16px;
  margin: 0;
}
.register {
  max-width: none;
  background: linear-gradient(110deg, #111f47, #16115a 45%, #07101f);
  padding-left: 7vw;
  padding-right: 7vw;
}
.register-panel {
  max-width: 1300px;
  margin: auto;
  display: grid;
  grid-template-columns: 1.5fr 0.8fr;
  gap: 12vw;
  align-items: center;
}
.register-copy > p:not(.section-kicker) {
  color: var(--muted);
  line-height: 1.7;
  max-width: 350px;
}
.countdown {
  display: flex;
  gap: 23px;
  margin: 32px 0;
}
.countdown div {
  display: grid;
  gap: 3px;
}
.countdown b {
  font: 700 35px var(--display);
  letter-spacing: -0.07em;
}
.countdown span {
  font: 9px "DM Mono";
  color: var(--cyan);
}
.registration-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}
.qr-box {
  background: #f5f8ff;
  color: #081126;
  padding: 28px;
  text-align: center;
  max-width: 265px;
  justify-self: end;
}
.qr {
  background: #fff;
  padding: 9px;
  width: 152px;
  height: 152px;
  margin: 0 auto 18px;
}
.qr svg {
  width: 100%;
  height: 100%;
  fill: #071019;
}
.qr-box h3 {
  font: 700 18px var(--display);
  margin: 0 0 6px;
}
.qr-box > a:not(.download) {
  font: 10px "DM Mono";
  color: #52617a;
  text-decoration: none;
}
.download {
  display: flex;
  margin-top: 20px;
  border-top: 1px solid #d5d9e3;
  padding-top: 14px;
  justify-content: space-between;
  color: #081126;
  text-decoration: none;
  font-size: 11px;
  font-weight: 800;
}
.download span {
  font-size: 20px;
  color: #5952e9;
}
.people-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10vw;
  margin-top: 55px;
}
.people h3 {
  font: 500 10px "DM Mono";
  color: var(--cyan);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 24px;
}
.profile {
  border-top: 1px solid var(--line);
  padding: 15px 0;
  display: flex;
  align-items: center;
  gap: 13px;
}
.avatar {
  width: 37px;
  height: 37px;
  border-radius: 50%;
  display: grid;
  place-content: center;
  color: var(--cyan);
  border: 1px solid var(--cyan);
}
.profile div:last-child {
  display: grid;
  gap: 3px;
}
.profile b {
  font-size: 13px;
}
.profile span,
.profile a {
  font-size: 10px;
  color: var(--muted);
  text-decoration: none;
}
.student-list {
  border-top: 1px solid var(--line);
}
.student-list a {
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  color: var(--ink);
  text-decoration: none;
  font-size: 12px;
}
.student-list span {
  color: var(--muted);
}
.student-list i {
  color: var(--lime);
  font: 10px "DM Mono";
  font-style: normal;
}
.faq {
  padding-top: 20px;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 10vw;
}
.accordion {
  padding-top: 20px;
}
.accordion details {
  border-top: 1px solid var(--line);
  padding: 19px 0;
}
.accordion details:last-child {
  border-bottom: 1px solid var(--line);
}
summary {
  list-style: none;
  font: 600 15px var(--font);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
}
summary::-webkit-details-marker {
  display: none;
}
summary span {
  color: var(--cyan);
  font-size: 20px;
  transition: 0.2s;
}
details[open] summary span {
  transform: rotate(45deg);
}
details p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
  max-width: 480px;
}
.contact {
  padding: 100px 7vw;
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: #080d1e;
}
.contact h2 {
  font: 700 clamp(50px, 7vw, 100px)/0.86 var(--display);
  letter-spacing: -0.09em;
  margin: 15px 0 25px;
}
.contact > div > p:not(.eyebrow) {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
}
.contact > div > a {
  color: var(--cyan);
  font: 600 13px var(--font);
  text-decoration: none;
}
.map {
  height: 310px;
  border: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  background: linear-gradient(30deg, #0e2145, #0b1630);
}
.map:before {
  content: "";
  position: absolute;
  inset: -20%;
  background:
    linear-gradient(
      48deg,
      transparent 48%,
      #69eff330 49%,
      #69eff330 51%,
      transparent 52%
    ),
    linear-gradient(
      145deg,
      transparent 47%,
      #9473ff25 48%,
      #9473ff25 52%,
      transparent 53%
    );
  background-size: 100px 100px;
}
.map-line {
  position: absolute;
  height: 1px;
  background: #d7ff5f66;
  transform: rotate(-24deg);
}
.l1 {
  width: 250px;
  top: 40%;
  left: -20px;
}
.l2 {
  width: 300px;
  top: 65%;
  right: -30px;
  transform: rotate(35deg);
}
.l3 {
  width: 170px;
  top: 23%;
  right: 30px;
  transform: rotate(108deg);
}
.pin {
  position: absolute;
  left: 48%;
  top: 43%;
  font-size: 35px;
  color: var(--lime);
  filter: drop-shadow(0 0 10px var(--lime));
}
.whatsapp-join {
  background: #25d366;
  border-color: #25d366;
  color: #071019;
}

.registration-fee {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 4px 0 0;
  color: var(--ink);
  font: 700 14px var(--font);
}

.registration-fee span {
  font: 500 9px 'DM Mono';
  letter-spacing: .12em;
  color: var(--lime);
}
.map b,
.map small {
  position: absolute;
  left: 50%;
  top: 60%;
  transform: translateX(-50%);
  font: 700 11px "DM Mono";
  letter-spacing: 0.1em;
  white-space: nowrap;
}
.map small {
  top: 68%;
  font-size: 8px;
  color: var(--muted);
}
footer {
  padding: 27px 7vw 70px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--line);
  font-size: 10px;
  color: var(--muted);
}
footer div {
  display: flex;
  gap: 15px;
}
footer a {
  color: var(--muted);
  text-decoration: none;
}
.bottom-nav {
  display: none;
}
dialog {
  width: min(450px, 90vw);
  background: #101938;
  color: var(--ink);
  border: 1px solid var(--cyan);
  padding: 32px;
  box-shadow: 0 30px 100px #000;
}
dialog::backdrop {
  background: #020512aa;
  backdrop-filter: blur(5px);
}
dialog h2 {
  font: 700 34px var(--display);
  letter-spacing: -0.06em;
  margin: 8px 0 20px;
}
dialog ul {
  color: var(--muted);
  padding-left: 18px;
  font-size: 13px;
  line-height: 2;
  margin-bottom: 28px;
}
.close {
  position: absolute;
  right: 13px;
  top: 9px;
  border: 0;
  background: none;
  color: var(--ink);
  font-size: 25px;
  cursor: pointer;
}
#toast {
  position: fixed;
  z-index: 101;
  bottom: 28px;
  left: 50%;
  transform: translate(-50%, 100px);
  background: var(--cyan);
  color: #071019;
  padding: 12px 17px;
  font-size: 12px;
  font-weight: 800;
  transition: 0.3s;
}
#toast.show {
  transform: translate(-50%, 0);
}
.light {
  --bg: #eef2fa;
  --surface: #fff;
  --ink: #071128;
  --muted: #576882;
  --line: rgba(11, 31, 80, 0.16);
}
.light .hero,
.light .nontech,
.light .non-card,
.light footer,
.light .contact {
  background: #eef2fa;
}
.light .event-card {
  background: #fff;
}
.light .register {
  background: linear-gradient(110deg, #dfeaff, #e9e4ff);
}
@media (max-width: 800px) {
  .cursor-glow {
    display: none;
  }
  .nav {
    height: 65px;
    padding: 0 5vw;
  }
  .nav nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(300px, 85vw);
    height: 100vh;
    background: #0e1530;
    display: flex;
    flex-direction: column;
    padding: 110px 35px;
    gap: 25px;
    transition: 0.35s;
    box-shadow: -20px 0 40px #0005;
  }
  .nav nav.open {
    right: 0;
  }
  .nav nav a {
    font: 600 20px var(--display);
    color: var(--ink);
  }
  .nav-actions .lang,
  .nav-actions .theme {
    display: none;
  }
  .register-mini {
    display: none;
  }
  .hamburger {
    display: block;
    z-index: 2;
  }
  .hero {
    min-height: 780px;
  }
  .hero-inner {
    padding: 100px 7vw 70px;
  }
  .hero-visual {
    position: absolute;
    width: 360px;
    height: 390px;
    right: -100px;
    bottom: 30px;
    opacity: 0.72;
  }
  .core {
    width: 150px;
    height: 150px;
  }
  .o1 {
    width: 280px;
    height: 100px;
  }
  .o2 {
    width: 100px;
    height: 280px;
  }
  .hero-copy {
    z-index: 2;
  }
  .hero h1 {
    font-size: clamp(64px, 18vw, 100px);
  }
  .hero-text {
    max-width: 330px;
  }
  .hero-buttons {
    margin-top: 22px;
  }
  .btn {
    padding: 13px 14px;
    font-size: 10px;
  }
  .event-meta {
    margin-top: 28px;
  }
  .scroll-cue {
    display: none;
  }
  .section {
    padding: 85px 7vw;
  }
  .about-layout,
  .people-columns,
  .register-panel,
  .contact,
  .faq {
    grid-template-columns: 1fr;
    gap: 35px;
  }
  .stats {
    margin-top: 50px;
    grid-template-columns: 1fr 1fr;
  }
  .stats > div:nth-child(2) {
    border-right: 0;
  }
  .section-head {
    align-items: start;
    gap: 25px;
    flex-direction: column;
    margin-bottom: 35px;
  }
  .event-grid {
    grid-template-columns: 1fr 1fr;
  }
  .event-card {
    min-height: 360px;
    padding: 17px;
  }
  .event-card h3 {
    font-size: 29px;
  }
  .non-grid {
    grid-template-columns: 1fr;
  }
  .non-card {
    min-height: 250px;
  }
  .register-panel {
    gap: 50px;
  }
  .qr-box {
    justify-self: start;
  }
  .people-columns {
    margin-top: 38px;
  }
  .faq {
    padding-top: 0;
  }
  .accordion {
    padding-top: 0;
  }
  .contact {
    padding: 75px 7vw;
  }
  .map {
    height: 250px;
  }
  footer {
    padding-bottom: 82px;
    align-items: flex-start;
    flex-direction: column;
    gap: 18px;
  }
  footer p {
    margin: 0;
  }
  .bottom-nav {
    position: fixed;
    z-index: 50;
    bottom: 0;
    left: 0;
    right: 0;
    height: 62px;
    background: rgba(8, 14, 31, 0.9);
    backdrop-filter: blur(12px);
    display: flex;
    justify-content: space-around;
    border-top: 1px solid var(--line);
  }
  .bottom-nav a {
    display: grid;
    place-content: center;
    text-align: center;
    gap: 2px;
    color: var(--muted);
    text-decoration: none;
    font-size: 17px;
    min-width: 52px;
  }
  .bottom-nav span {
    font: 8px var(--font);
  }
  .bottom-register {
    color: var(--cyan) !important;
  }
  .bottom-register:first-letter {
    font-size: 21px;
  }
}
@media (max-width: 480px) {
  .announcement {
    font-size: 8px;
  }
  .hero {
    min-height: 730px;
  }
  .hero-inner {
    padding-top: 80px;
  }
  .emblem {
    margin-top: 20px;
  }
  .hero-sub {
    font-size: 10px;
  }
  .hero-text {
    font-size: 12px;
  }
  .event-grid {
    grid-template-columns: 1fr;
  }
  .event-card {
    min-height: 310px;
  }
  .stats strong {
    font-size: 28px;
  }
  .stats > div {
    padding: 16px 5px;
  }
  .timeline > div {
    grid-template-columns: 70px 24px 1fr;
  }
  .timeline p {
    font-size: 13px;
  }
  .student-list a {
    grid-template-columns: 1fr auto;
    gap: 5px;
  }
  .student-list i {
    grid-column: 1/-1;
  }
  .registration-actions {
    flex-direction: column;
    align-items: flex-start;
  }
  .filter-wrap {
    width: 100%;
  }
}