:root {
  --navy: #081525;
  --ink: #101828;
  --graphite: #182130;
  --panel: #0d2036;
  --red: #d71920;
  --red-dark: #a71218;
  --blue: #1b75bb;
  --cyan: #63d3ff;
  --green: #3fb984;
  --light: #f4f7fb;
  --white: #ffffff;
  --muted: #bfd0e2;
  --text-soft: #526072;
  --line: rgba(255, 255, 255, 0.14);
  --line-dark: #d7e0ea;
  --shadow: 0 18px 50px rgba(8, 21, 37, 0.22);
  --radius: 8px;
  --header-height: 92px;
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--ink);
  background: var(--navy);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--navy);
  overflow-x: hidden;
}

body.modal-open {
  overflow: hidden;
}

a {
  color: inherit;
}

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

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

:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 2000;
  padding: 10px 14px;
  background: var(--white);
  color: var(--navy);
  border-radius: var(--radius);
  transform: translateY(-160%);
  transition: transform 0.2s ease;
}

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  min-height: var(--header-height);
  background: rgba(8, 21, 37, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.nav {
  width: min(1180px, calc(100% - 32px));
  min-height: var(--header-height);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-height: 76px;
  padding: 5px 10px;
  border-radius: var(--radius);
  background: transparent;
  color: var(--white);
  text-decoration: none;
}

.brand-logo {
  width: min(136px, 34vw);
  height: auto;
  object-fit: contain;
  object-position: left center;
}

.nav-panel {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  color: #dce8f7;
  text-decoration: none;
  border-radius: var(--radius);
  font-size: 0.94rem;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
}

.menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
  color: var(--white);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
}

.section,
.section-light,
.section-dark {
  position: relative;
  padding: 96px 0;
}

.section {
  background: var(--white);
}

.section-light {
  background: var(--light);
}

.section-dark {
  color: var(--white);
  background: var(--navy);
}

.hero {
  min-height: 92vh;
  display: grid;
  align-items: center;
  padding-top: calc(var(--header-height) + 72px);
  padding-bottom: 86px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  opacity: 0.54;
  background:
    linear-gradient(90deg, rgba(99, 211, 255, 0.08) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    radial-gradient(circle at 22% 24%, rgba(27, 117, 187, 0.34), transparent 34%),
    radial-gradient(circle at 76% 46%, rgba(215, 25, 32, 0.22), transparent 28%);
  background-size: 54px 54px, 54px 54px, auto, auto;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 980px);
  align-items: center;
  justify-content: start;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--red);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.section-dark .eyebrow,
.ctf-section .eyebrow,
.sponsors-section .eyebrow {
  color: #ff8b90;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  font-size: clamp(3.4rem, 7vw, 6.7rem);
  line-height: 0.95;
  letter-spacing: 0;
}

.hero-logo-title {
  max-width: 760px;
  line-height: 0;
}

.hero-logo {
  width: 100%;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 22px 34px rgba(0, 0, 0, 0.34));
}

h2 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 3.6vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
  line-height: 1.25;
}

.hero-slogan {
  margin: 18px 0 10px;
  color: var(--cyan);
  font-size: clamp(1.35rem, 2vw, 1.8rem);
  font-weight: 750;
}

.hero-text {
  max-width: 680px;
  color: #e5eef8;
  font-size: 1.17rem;
}

.event-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 16px;
  margin: 30px 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.07);
  list-style: none;
}

.event-facts li {
  min-height: 64px;
  padding: 8px 0;
}

.event-facts span,
.event-facts strong {
  display: block;
}

.event-facts span {
  color: var(--muted);
  font-size: 0.86rem;
}

.event-facts strong {
  color: var(--white);
}

.logo-slot {
  width: min(100%, 400px);
  margin: 0 0 28px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
}

.logo-slot img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
}

.section-heading + .btn,
.sponsors-section .btn {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-actions {
  width: min(100%, 980px);
  display: grid;
  gap: 18px;
  padding-top: 2px;
}

.action-columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.9fr);
  gap: 48px;
}

.action-group {
  min-width: 0;
  display: grid;
  align-content: start;
  gap: 10px;
}

.action-label {
  margin: 0;
  color: #c5d8ed;
  font-size: 0.78rem;
  font-weight: 850;
}

.action-secondary {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.author-materials {
  display: grid;
  gap: 10px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.author-materials .action-label {
  text-transform: uppercase;
}

.hero-actions .author-materials .btn-small {
  flex: 0 1 290px;
}

.ctf-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 22px;
}

.ctf-actions .btn {
  flex: 0 1 auto;
}

.btn {
  min-height: 46px;
  min-width: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  font-weight: 800;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn-icon {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  fill: currentColor;
}

.btn-arrow {
  margin-left: auto;
  font-size: 1rem;
  line-height: 1;
}

.btn-feature {
  width: 100%;
  min-height: 58px;
  justify-content: flex-start;
  padding-inline: 22px;
  text-transform: uppercase;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.22);
}

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

.btn-primary {
  background: var(--red);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--red-dark);
}

.btn-secondary {
  background: var(--blue);
  color: var(--white);
}

.btn-template-presentation {
  background: #b7472a;
  color: var(--white);
}

.btn-template-paper {
  background: #185abd;
  color: var(--white);
}

.btn-outline {
  border-color: rgba(255, 255, 255, 0.4);
  color: var(--white);
  background: rgba(255, 255, 255, 0.06);
}

.btn-small {
  min-height: 42px;
  padding: 9px 14px;
  font-size: 0.92rem;
}

.hero-actions .btn-small {
  min-width: 0;
  flex: 1 1 190px;
  justify-content: flex-start;
  padding-inline: 18px;
}

.countdown-band {
  padding: 30px 0;
  color: var(--white);
  background: linear-gradient(90deg, var(--red-dark), #1a3f66 56%, var(--panel));
}

.countdown-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  align-items: center;
  gap: 28px;
}

.countdown-layout h2 {
  margin-bottom: 4px;
  font-size: clamp(1.7rem, 3vw, 2.5rem);
}

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

.countdown {
  display: grid;
  grid-template-columns: repeat(4, minmax(90px, 1fr));
  gap: 10px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.1);
}

.countdown > div {
  min-height: 92px;
  padding: 10px;
  text-align: center;
}

.countdown strong {
  display: block;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1;
}

.countdown span {
  color: #e6edf7;
  font-size: 0.86rem;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading p {
  color: var(--text-soft);
  font-size: 1.05rem;
}

.section-dark .section-heading p,
.ctf-section .section-heading p,
.sponsors-section .section-heading p {
  color: #d7e5f4;
}

.cards {
  display: grid;
  gap: 16px;
}

.single-box,
.speaker-card {
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--line-dark);
  box-shadow: 0 8px 26px rgba(8, 21, 37, 0.08);
}

.single-box {
  padding: 28px;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 42px;
  align-items: start;
}

.stat-list,
.topic-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.speaker-card {
  padding: 22px;
}

.stat-list span {
  min-height: 86px;
  display: grid;
  align-content: center;
  gap: 4px;
  padding: 16px 0;
  border-top: 1px solid #e2e9f1;
  color: var(--text-soft);
  font-weight: 750;
}

.stat-list strong {
  display: block;
  color: var(--red);
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1;
}

.topic-list > div {
  padding-top: 16px;
  border-top: 1px solid #e2e9f1;
}

.topic-list strong {
  display: block;
  color: var(--blue);
  font-size: 1.02rem;
  line-height: 1.25;
}

.topic-list p {
  margin: 6px 0 0;
  color: var(--text-soft);
}

.timeline {
  display: grid;
  gap: 18px;
  position: relative;
  padding: 28px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background: #f9fbfe;
  box-shadow: 0 8px 26px rgba(8, 21, 37, 0.08);
}

.timeline-item {
  position: relative;
  padding: 4px 0 22px 24px;
  border-left: 5px solid var(--red);
  border-bottom: 1px solid #e2e9f1;
  background: transparent;
  box-shadow: none;
}

.timeline-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.timeline-item time {
  display: inline-flex;
  margin-bottom: 8px;
  color: var(--blue);
  font-weight: 850;
}

.timeline-item ul,
.check-list {
  margin: 12px 0 0;
  padding-left: 20px;
}

.track-list > div {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.track-content {
  min-width: 0;
}

.track-list .track-badge {
  display: block;
  flex: 0 0 82px;
  width: 82px;
  height: 82px;
  object-fit: contain;
  object-position: center;
}

.track-evaluators-label {
  display: block;
  margin-top: 14px;
  color: var(--red);
  font-size: 0.78rem;
  font-weight: 850;
  text-transform: uppercase;
}

.track-evaluators {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.track-evaluators li {
  display: flex;
}

.track-evaluators a {
  padding: 5px 9px;
  border: 1px solid #d7e0ea;
  border-radius: var(--radius);
  color: var(--graphite);
  background: #f9fbfe;
  font-size: 0.88rem;
  font-weight: 700;
  line-height: 1.25;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.track-evaluators a:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: #eef6ff;
}

.status {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  margin-top: 18px;
  padding: 4px 10px;
  border-radius: 999px;
  background: #eef6ff;
  color: #15578e;
  font-size: 0.78rem;
  font-weight: 850;
}

.ctf-section,
.sponsors-section {
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(8, 21, 37, 0.96), rgba(13, 32, 54, 0.95)),
    linear-gradient(90deg, rgba(215, 25, 32, 0.12), transparent);
}

.ctf-layout,
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 42px;
  align-items: center;
}

.ctf-panel {
  padding: 28px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0;
}

.tag-list span {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(99, 211, 255, 0.13);
  color: #dbf5ff;
  font-weight: 750;
}

.tag-list-light span {
  background: #e8f2fb;
  color: #15578e;
}

.flow {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 10px;
  padding: 18px;
  margin: 0 0 22px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background: var(--white);
  list-style: none;
  counter-reset: flow;
  box-shadow: 0 8px 26px rgba(8, 21, 37, 0.08);
}

.flow li {
  position: relative;
  min-height: 46px;
  display: grid;
  place-items: center;
  padding: 8px 10px;
  border-radius: 999px;
  background: #eef6ff;
  color: #15578e;
  text-align: center;
  font-weight: 800;
}

.flow li::after {
  content: "→";
  position: absolute;
  right: -14px;
  color: var(--red);
  font-weight: 900;
}

.flow li:last-child::after {
  content: "";
}

.schedule-box {
  margin-top: 24px;
  padding: 24px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--line-dark);
}

.schedule-box dl {
  display: grid;
  gap: 10px;
  margin: 0;
}

.schedule-box dl > div {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid #e2e9f1;
}

.schedule-box dt {
  font-weight: 850;
}

.schedule-box dd {
  margin: 0;
  color: var(--text-soft);
}

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

.speaker-card {
  min-height: 250px;
}

.avatar {
  width: 68px;
  height: 68px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--red));
  color: var(--white);
  font-weight: 900;
}

.speaker-card strong {
  display: block;
  margin-top: 14px;
}

.sponsor-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.sponsor-grid div {
  min-height: 150px;
  display: grid;
  align-content: center;
  gap: 12px;
  padding: 22px;
  border-radius: var(--radius);
  border: 1px dashed rgba(255, 255, 255, 0.34);
  background: rgba(255, 255, 255, 0.07);
  text-align: center;
}

.sponsor-grid strong {
  color: var(--cyan);
}

.sponsor-grid span {
  color: #dce8f7;
}

.contact-list {
  display: grid;
  gap: 10px;
  font-style: normal;
}

.contact-list a {
  color: var(--blue);
  font-weight: 800;
}

.demo-form {
  padding: 26px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--line-dark);
  box-shadow: var(--shadow);
}

.form-note,
.note {
  color: var(--text-soft);
  font-size: 0.95rem;
}

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  margin-bottom: 6px;
  font-weight: 850;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  min-height: 46px;
  padding: 11px 12px;
  border: 1px solid #bdcad8;
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
}

.field textarea {
  resize: vertical;
}

.field.is-invalid input,
.field.is-invalid textarea,
.field.is-invalid select {
  border-color: var(--red);
}

.error-message {
  min-height: 20px;
  display: block;
  color: var(--red);
  font-size: 0.86rem;
  font-weight: 700;
}

.checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 8px 0;
  color: var(--text-soft);
}

.checkbox input {
  width: 20px;
  height: 20px;
  margin-top: 3px;
}

.form-status {
  margin: 14px 0 0;
  color: #176b49;
  font-weight: 800;
}

.site-footer {
  color: #dce8f7;
  background: #07111e;
  padding: 48px 0 26px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.7fr 0.9fr;
  gap: 32px;
}

.footer-grid nav,
.footer-grid > div:last-child {
  display: grid;
  align-content: start;
  gap: 10px;
}

.footer-grid a,
.footer-link {
  color: #dce8f7;
  text-align: left;
  background: transparent;
  border: 0;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.prototype-warning {
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: #b8c8d9;
  font-size: 0.92rem;
}

.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 900;
  width: 48px;
  height: 48px;
  border: 0;
  border-radius: var(--radius);
  background: var(--red);
  color: var(--white);
  font-size: 1.3rem;
  font-weight: 900;
  cursor: pointer;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 1600;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 18px;
}

.modal.is-open {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 9, 17, 0.78);
}

.modal-panel {
  position: relative;
  width: min(620px, 100%);
  max-height: min(86vh, 760px);
  overflow: auto;
  padding: 28px;
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.35);
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background: #f5f8fb;
  color: var(--ink);
  cursor: pointer;
  font-size: 1.7rem;
  line-height: 1;
}

.modal-content h2 {
  padding-right: 42px;
  font-size: 1.65rem;
}

.modal-content p {
  color: var(--text-soft);
}

.modal-content .demo-form {
  box-shadow: none;
  padding: 0;
  border: 0;
}

.underconstruction-page {
  min-height: 100vh;
  color: var(--white);
  background: var(--navy);
}

.underconstruction-nav {
  gap: 8px;
}

.underconstruction-hero {
  min-height: 100vh;
  display: grid;
  align-items: center;
  padding-top: calc(var(--header-height) + 72px);
  overflow: hidden;
}

.underconstruction-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 48px;
  align-items: center;
}

.underconstruction-copy h1 {
  max-width: 780px;
}

.underconstruction-panel {
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow);
}

.underconstruction-panel h2 {
  margin-top: 20px;
  color: var(--white);
  font-size: clamp(1.8rem, 3vw, 2.7rem);
}

.underconstruction-list {
  display: grid;
  gap: 14px;
  margin: 22px 0 0;
  padding-left: 20px;
  color: #dce8f7;
}

.underconstruction-list li::marker {
  color: var(--cyan);
  font-weight: 900;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

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

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

@media (max-width: 1120px) {
  .nav-panel {
    gap: 0;
  }

  .nav-link {
    padding-inline: 8px;
    font-size: 0.89rem;
  }

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

@media (max-width: 900px) {
  :root {
    --header-height: 80px;
  }

  .menu-toggle {
    display: block;
  }

  .nav-panel {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    display: grid;
    gap: 2px;
    padding: 12px 20px 20px;
    background: rgba(8, 21, 37, 0.98);
    border-bottom: 1px solid var(--line);
    transform: translateY(-130%);
    transition: transform 0.22s ease;
    visibility: hidden;
  }

  .nav-panel.is-open {
    transform: translateY(0);
    visibility: visible;
  }

  .underconstruction-nav {
    position: static;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    padding: 0;
    background: transparent;
    border-bottom: 0;
    transform: none;
    visibility: visible;
  }

  .nav-link,
  .nav-panel .btn {
    width: 100%;
    justify-content: flex-start;
  }

  .underconstruction-nav .nav-link,
  .underconstruction-nav .btn {
    width: auto;
    justify-content: center;
  }

  .hero-grid,
  .two-column,
  .ctf-layout,
  .contact-grid,
  .countdown-layout,
  .underconstruction-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .action-columns {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .hero {
    min-height: auto;
  }

  .underconstruction-hero {
    min-height: auto;
  }

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

  .stat-list,
  .topic-list {
    grid-template-columns: 1fr;
  }

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

  .flow li::after {
    content: "";
  }
}

@media (max-width: 620px) {
  .container,
  .nav {
    width: min(100% - 28px, 1120px);
  }

  .section,
  .section-light,
  .section-dark {
    padding: 72px 0;
  }

  .hero {
    padding-top: calc(var(--header-height) + 42px);
  }

  h1 {
    font-size: clamp(3rem, 15vw, 4.4rem);
  }

  .hero-logo-title {
    max-width: 100%;
  }

  .event-facts,
  .speaker-grid,
  .sponsor-grid,
  .countdown {
    grid-template-columns: 1fr;
  }

  .single-box,
  .timeline {
    padding: 22px;
  }

  .track-list > div {
    display: grid;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .action-secondary {
    display: grid;
    grid-template-columns: 1fr;
  }

  .underconstruction-nav .nav-link {
    display: none;
  }

  .countdown > div {
    min-height: 90px;
  }

  .schedule-box dl > div {
    display: grid;
    gap: 2px;
  }

  .modal-panel {
    padding: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

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