:root {
  --bac-navy: #0c154a;
  --bac-purple: #2b0b4a;
  --bac-deep: #08051a;
  --bac-cyan: #00d4ff;
  --bac-cyan-dim: rgba(0, 212, 255, 0.14);
  --bac-cyan-glow: rgba(0, 212, 255, 0.35);
  --bac-magenta: #e040fb;
  --bac-pink: #ff3d9a;
  --bac-white: #ffffff;
  --bac-muted: rgba(255, 255, 255, 0.68);
  --bac-muted-2: rgba(255, 255, 255, 0.42);
  --bac-line: rgba(0, 212, 255, 0.22);
  --bac-line-strong: rgba(0, 212, 255, 0.5);
  --bac-font: "Open Sans", system-ui, sans-serif;
  --bac-display: "Montserrat", system-ui, sans-serif;
  --bac-max: 1120px;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
html {
  overflow-x: clip;
  overscroll-behavior-x: none;
}
body {
  font-family: var(--bac-font);
  background: var(--bac-deep);
  color: var(--bac-white);
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
  overscroll-behavior-x: none;
  touch-action: pan-y;
  max-width: 100%;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }

.bac { min-height: 100vh; }

.bac-label {
  margin: 0 0 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bac-cyan);
}

.bac-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 999px;
  border: 0;
  background: var(--bac-cyan);
  color: #001018;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 24px var(--bac-cyan-glow);
}
.bac-btn:hover {
  background: #33ddff;
  transform: translateY(-1px);
  box-shadow: 0 8px 32px var(--bac-cyan-glow);
}
.bac-btn:active { transform: translateY(1px); }
.bac-btn:focus-visible,
.bac-nav__links a:focus-visible,
.bac-nav__toggle:focus-visible {
  outline: 2px solid var(--bac-cyan);
  outline-offset: 3px;
}
.bac-btn--sm { padding: 10px 22px; font-size: 13px; }
.bac-btn--lg { padding: 16px 40px; font-size: 15px; }
.bac-btn--outline {
  background: transparent;
  border: 2px solid var(--bac-cyan);
  box-shadow: none;
  color: var(--bac-cyan);
}
.bac-btn--outline:hover {
  background: var(--bac-cyan-dim);
  color: #fff;
}

/* Nav */
.bac-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 24px;
  background: linear-gradient(180deg, rgba(8,5,26,0.92), rgba(8,5,26,0.55) 80%, transparent);
  backdrop-filter: blur(8px);
}
.bac-nav__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--bac-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.bac-nav__mark { width: 36px; height: 36px; flex-shrink: 0; }
.bac-nav__links {
  display: flex;
  gap: 28px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--bac-muted);
}
.bac-nav__links a:hover { color: var(--bac-cyan); }
.bac-nav__toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 0;
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.bac-nav__toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: #fff;
}

/* Hero */
.bac-hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.bac-hero__bg { position: absolute; inset: 0; }
.bac-hero__gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #0c154a 0%, #2b0b4a 45%, #1a0a3a 70%, #08051a 100%);
}
.bac-hero__grid {
  position: absolute;
  inset: 0;
  opacity: 0.08;
  background-image:
    linear-gradient(rgba(0,212,255,0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.5) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black, transparent);
}
.bac-hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.bac-hero__glow--left {
  width: 420px;
  height: 420px;
  top: 10%;
  left: -8%;
  background: rgba(0,212,255,0.14);
}
.bac-hero__glow--right {
  width: 360px;
  height: 360px;
  bottom: 8%;
  right: -5%;
  background: rgba(224,64,251,0.16);
}
.bac-cube {
  position: absolute;
  pointer-events: none;
  opacity: 0.55;
}
.bac-cube--1 { width: 100px; top: 18%; right: 12%; animation: bac-float 8s ease-in-out infinite; }
.bac-cube--2 { width: 72px; top: 42%; right: 28%; animation: bac-float 10s ease-in-out infinite reverse; }
.bac-cube--3 { width: 56px; bottom: 22%; right: 8%; opacity: 0.35; animation: bac-float 12s ease-in-out infinite; }
@keyframes bac-float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-12px) rotate(3deg); }
}
.bac-hero__inner {
  position: relative;
  z-index: 1;
  padding: 120px 24px 88px;
  max-width: 720px;
  margin: 0 auto 0 max(24px, calc((100vw - var(--bac-max)) / 2));
}
.bac-hero__hosted {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bac-muted);
}
.bac-hero__be-logo {
  width: auto;
  height: 32px;
  flex-shrink: 0;
}
.bac-hero__be-name {
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.08em;
}
.bac-hero__kicker {
  margin: 0 0 16px;
  font-family: var(--bac-display);
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #fff;
}
.bac-hero__kicker span {
  margin-left: 8px;
  background: linear-gradient(90deg, var(--bac-pink), var(--bac-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.bac-hero__eyebrow {
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--bac-pink), var(--bac-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.bac-hero__title {
  margin: 0 0 28px;
  font-family: var(--bac-display);
  font-size: clamp(2rem, 5vw, 3.1rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
}
.bac-hero__date {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin: 0 0 18px;
  font-family: var(--bac-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  line-height: 1;
}
.bac-hero__date-mid {
  display: flex;
  align-items: center;
  gap: 8px;
}
.bac-hero__date-bar {
  display: inline-block;
  padding: 6px 14px;
  background: var(--bac-cyan);
  color: #001018;
  font-size: clamp(1.1rem, 3vw, 1.6rem);
  letter-spacing: 0.08em;
}
.bac-hero__date-dash { color: var(--bac-muted); font-weight: 600; }
.bac-hero__date-year {
  background: linear-gradient(90deg, var(--bac-pink), var(--bac-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.bac-hero__meta {
  margin: 0 0 4px;
  font-size: 15px;
  color: var(--bac-muted);
}

.bac-hero .ts-raffle-offer {
  margin: 14px 0 18px;
}

.bac-hero .bac-btn--lg {
  margin-top: 0;
}

/* Stats strip */
.bac-strip {
  position: relative;
  z-index: 2;
  margin-top: -1px;
  background: linear-gradient(90deg, var(--bac-navy), var(--bac-purple));
  border-top: 1px solid var(--bac-line);
  border-bottom: 1px solid var(--bac-line);
}
.bac-strip__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: var(--bac-max);
  margin: 0 auto;
}
.bac-strip__cell {
  padding: 28px 20px;
  text-align: center;
  border-right: 1px solid var(--bac-line);
}
.bac-strip__cell:last-child { border-right: 0; }
.bac-strip__cell strong {
  display: block;
  margin-bottom: 6px;
  font-family: var(--bac-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--bac-cyan);
}
.bac-strip__cell span {
  font-size: 12px;
  color: var(--bac-muted);
  line-height: 1.4;
}

/* About */
.bac-about {
  padding: 88px 24px;
  background: var(--bac-deep);
}
.bac-about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  max-width: var(--bac-max);
  margin: 0 auto;
}
.bac-panel {
  position: relative;
  aspect-ratio: 1;
  max-width: 380px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, rgba(0,212,255,0.12), transparent 60%),
              linear-gradient(160deg, rgba(12,21,74,0.8), rgba(43,11,74,0.6));
  border: 1px solid var(--bac-line);
}
.bac-panel__ring {
  position: absolute;
  inset: 12%;
  border-radius: 50%;
  border: 1px dashed rgba(0,212,255,0.3);
  animation: bac-spin 40s linear infinite;
}
@keyframes bac-spin { to { transform: rotate(360deg); } }
.bac-panel__core {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 24px;
}
.bac-panel__label {
  display: block;
  margin-bottom: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bac-cyan);
}
.bac-panel__core strong {
  display: block;
  font-family: var(--bac-display);
  font-size: 4rem;
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(180deg, #fff, var(--bac-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.bac-panel__sub {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--bac-muted);
}
.bac-panel__nodes {
  position: absolute;
  inset: 0;
}
.bac-panel__nodes span {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--bac-pink);
  box-shadow: 0 0 12px rgba(255,61,154,0.5);
}
.bac-panel__nodes span:nth-child(1) { top: 6%; left: 50%; transform: translateX(-50%); background: var(--bac-cyan); }
.bac-panel__nodes span:nth-child(2) { top: 22%; right: 10%; background: var(--bac-pink); }
.bac-panel__nodes span:nth-child(3) { bottom: 22%; right: 10%; background: var(--bac-cyan); box-shadow: 0 0 0 2px var(--bac-cyan); }
.bac-panel__nodes span:nth-child(4) { bottom: 6%; left: 50%; transform: translateX(-50%); background: var(--bac-pink); }
.bac-panel__nodes span:nth-child(5) { bottom: 22%; left: 10%; background: var(--bac-cyan); box-shadow: 0 0 0 2px var(--bac-cyan); }
.bac-panel__nodes span:nth-child(6) { top: 22%; left: 10%; background: var(--bac-pink); }
.bac-about__copy h2 {
  margin: 0 0 18px;
  font-family: var(--bac-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  line-height: 1.15;
}
.bac-about__copy p {
  margin: 0 0 20px;
  color: var(--bac-muted);
  line-height: 1.7;
  font-size: 15px;
}
.bac-about__list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.bac-about__list li {
  position: relative;
  padding: 10px 0 10px 22px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  font-size: 14px;
  color: var(--bac-muted);
}
.bac-about__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--bac-cyan);
  transform: translateY(-50%);
}

/* Highlights */
.bac-highlights {
  padding: 88px 24px;
  background: linear-gradient(180deg, var(--bac-deep), var(--bac-navy));
}
.bac-highlights__head {
  max-width: var(--bac-max);
  margin: 0 auto 40px;
  text-align: center;
}
.bac-highlights__head h2 {
  margin: 0;
  font-family: var(--bac-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
}
.bac-highlights__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: var(--bac-max);
  margin: 0 auto;
}
.bac-feature {
  padding: 28px 24px;
  border-radius: 14px;
  border: 1px solid var(--bac-line);
  background: linear-gradient(160deg, rgba(12,21,74,0.45), rgba(43,11,74,0.25));
  transition: border-color 0.2s, transform 0.2s;
}
.bac-feature:hover {
  border-color: var(--bac-line-strong);
  transform: translateY(-2px);
}
.bac-feature__icon {
  width: 44px;
  height: 44px;
  margin-bottom: 16px;
  color: var(--bac-cyan);
}
.bac-feature__icon svg { width: 100%; height: 100%; }
.bac-feature h3 {
  margin: 0 0 10px;
  font-family: var(--bac-display);
  font-size: 1.1rem;
  font-weight: 700;
}
.bac-feature p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--bac-muted);
}

/* Tickets */
.bac-tickets {
  padding: 88px 24px 100px;
  background: var(--bac-deep);
}
.bac-tickets__head {
  max-width: 640px;
  margin: 0 auto 48px;
  text-align: center;
}
.bac-tickets__head h2 {
  margin: 0 0 14px;
  font-family: var(--bac-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
}
.bac-tickets__head p {
  margin: 0;
  color: var(--bac-muted);
  line-height: 1.6;
  font-size: 15px;
}
.bac-tickets__head strong { color: var(--bac-cyan); }
.bac-tickets__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 760px;
  margin: 0 auto;
}
.bac-card {
  padding: 32px 28px;
  border-radius: 16px;
  border: 1px solid var(--bac-line);
  background: linear-gradient(160deg, rgba(12,21,74,0.5), rgba(43,11,74,0.35));
}
.bac-card--vip {
  border-color: var(--bac-line-strong);
  background: linear-gradient(160deg, rgba(0,212,255,0.08), rgba(224,64,251,0.06));
}
.bac-card__tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--bac-cyan-dim);
  color: var(--bac-cyan);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.bac-card h3 {
  margin: 0 0 8px;
  font-family: var(--bac-display);
  font-size: 1.35rem;
  font-weight: 700;
}
.bac-card__price {
  margin: 0 0 4px;
  font-family: var(--bac-display);
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--bac-cyan);
}
.bac-card__price small {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--bac-muted);
  margin-right: 6px;
}
.bac-card__note {
  margin: 0 0 20px;
  font-size: 12px;
  color: var(--bac-muted-2);
}
.bac-card ul {
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}
.bac-card li {
  padding: 8px 0;
  font-size: 13px;
  color: var(--bac-muted);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.bac-card .bac-btn { width: 100%; }

/* Footer */
.bac-foot {
  padding: 48px 24px 56px;
  text-align: center;
  border-top: 1px solid var(--bac-line);
  background: var(--bac-navy);
  color: var(--bac-muted);
  font-size: 13px;
}
.bac-foot__logo {
  width: auto;
  height: 40px;
  margin: 0 auto 16px;
}
.bac-foot__tag {
  margin: 0 0 8px;
  color: #fff;
  font-weight: 600;
}
.bac-foot__meta { margin: 0 0 16px; }

/* Responsive */
@media (max-width: 900px) {
  .bac-nav { flex-wrap: wrap; align-items: center; }
  .bac-nav__brand { flex: 1 1 0; min-width: 0; }
  .bac-nav__toggle { display: inline-flex; order: 2; flex: 0 0 auto; margin-left: 8px; }
  .bac-nav__links {
    display: none;
    order: 4;
    flex-basis: 100%;
    flex-direction: column;
    gap: 0;
    padding: 8px 0 4px;
    background: rgba(8, 5, 26, 0.96);
    border-radius: 12px;
  }
  .bac-nav.is-open .bac-nav__links { display: flex; }
  .bac-nav__links a { padding: 12px 8px; }
  .bac-nav .bac-btn--sm { order: 3; flex: 0 0 auto; }
  .bac-strip__grid { grid-template-columns: 1fr 1fr; }
  .bac-strip__cell:nth-child(2) { border-right: 0; }
  .bac-strip__cell:nth-child(1),
  .bac-strip__cell:nth-child(2) { border-bottom: 1px solid var(--bac-line); }
  .bac-about__grid,
  .bac-highlights__grid,
  .bac-tickets__grid { grid-template-columns: 1fr; }
  .bac-hero__inner { margin: 0 auto; text-align: center; }
  .bac-hero__date { justify-content: center; }
  .bac-hero__hosted { justify-content: center; }
  .bac-cube,
  .bac-panel__ring { animation: none; }
  .bac-cube { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .bac-cube,
  .bac-panel__ring { animation: none; }
}

@media (max-width: 520px) {
  .bac-strip__grid { grid-template-columns: 1fr; }
  .bac-strip__cell { border-right: 0; border-bottom: 1px solid var(--bac-line); }
  .bac-strip__cell:last-child { border-bottom: 0; }
  .bac-nav { padding: 12px 16px; }
  .bac-nav__brand span {
    font-size: 12px;
    line-height: 1.2;
    max-width: 100%;
  }
  .bac-hero__inner { padding: 96px 16px 64px; }
}