:root {
  --ink: #111111;
  --paper: #fff9ef;
  --acid: #d7ff28;
  --pink: #ff2a8a;
  --cyan: #00d5ff;
  --red: #f21313;
  --violet: #3a1cff;
  --line: #111111;
  --shadow: 8px 8px 0 var(--ink);
  --serif-heavy: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", "MS Mincho", serif;
}

* {
  box-sizing: border-box;
}

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

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, system-ui, sans-serif;
  background:
    linear-gradient(90deg, rgba(17, 17, 17, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(17, 17, 17, 0.08) 1px, transparent 1px),
    radial-gradient(circle at 20% 12%, rgba(255, 42, 138, 0.22), transparent 22rem),
    radial-gradient(circle at 88% 25%, rgba(0, 213, 255, 0.28), transparent 20rem),
    var(--paper);
  background-size: 34px 34px, 34px 34px, auto, auto, auto;
  overflow-x: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  opacity: 0.26;
  background-image:
    radial-gradient(var(--ink) 1px, transparent 1px),
    linear-gradient(135deg, transparent 0 48%, rgba(242, 19, 19, 0.25) 48% 52%, transparent 52%);
  background-size: 8px 8px, 72px 72px;
  mix-blend-mode: multiply;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem clamp(1rem, 3vw, 2rem);
  border-bottom: 3px solid var(--acid);
  background: rgba(17, 17, 17, 0.94);
  color: white;
  backdrop-filter: blur(12px);
}

.site-header.is-scrolled {
  background: rgba(17, 17, 17, 0.98);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  gap: 0.75rem;
  font-weight: 900;
  letter-spacing: 0;
}

.brand-logo {
  width: clamp(4.2rem, 8vw, 7rem);
  height: 2.85rem;
  object-fit: contain;
  filter: drop-shadow(3px 3px 0 rgba(0, 213, 255, 0.8));
}

.brand-copy {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  min-width: 0;
}

.brand-name {
  font-family: var(--serif-heavy);
  font-size: clamp(0.95rem, 1.6vw, 1.2rem);
  font-weight: 900;
  line-height: 1;
  white-space: nowrap;
}

.brand-powered {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.68rem;
  line-height: 1.15;
  white-space: nowrap;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.4rem;
  font-family: Impact, "Arial Narrow", sans-serif;
  font-size: clamp(1.1rem, 2vw, 1.45rem);
}

.nav a {
  padding: 0.2rem 0.55rem;
  border: 2px solid transparent;
}

.nav a:hover {
  border-color: var(--line);
  background: var(--acid);
  color: var(--ink);
}

.nav-x,
.social-button {
  gap: 0.45rem;
}

.x-icon {
  flex: 0 0 auto;
  width: 1em;
  height: 1em;
  fill: currentColor;
}

.nav-x {
  display: inline-flex;
  align-items: center;
}

.hero {
  position: relative;
  min-height: 100svh;
  padding: 6.8rem clamp(1rem, 4vw, 4rem) 4rem;
  border-bottom: 4px solid var(--line);
  background:
    repeating-linear-gradient(90deg, transparent 0 2rem, rgba(17, 17, 17, 0.06) 2rem 2.25rem),
    linear-gradient(130deg, rgba(215, 255, 40, 0.76), rgba(255, 249, 239, 0.72) 45%, rgba(255, 42, 138, 0.3));
}

.ticker {
  position: absolute;
  top: 4.25rem;
  left: 0;
  right: 0;
  display: flex;
  overflow: hidden;
  border-block: 3px solid var(--line);
  background: var(--ink);
  color: var(--acid);
  font-family: Impact, "Arial Narrow", sans-serif;
  font-size: clamp(1.2rem, 2.8vw, 2rem);
  white-space: nowrap;
}

.ticker-track {
  display: flex;
  width: max-content;
  animation: marquee 24s linear infinite;
}

.ticker span {
  flex: 0 0 auto;
  padding: 0.18rem 1rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: center;
  max-width: 1020px;
  min-width: 0;
  min-height: calc(100svh - 11rem);
  margin: 0 auto;
  gap: clamp(1.25rem, 3.5vw, 3.5rem);
}

.hero-copy {
  position: relative;
  z-index: 1;
  min-width: 0;
  max-width: 100%;
  display: grid;
  justify-items: start;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 1rem;
  padding: 0.25rem 0.6rem;
  border: 2px solid var(--line);
  background: white;
  box-shadow: 4px 4px 0 var(--ink);
  font-family: Impact, "Arial Narrow", sans-serif;
  font-size: clamp(1.1rem, 2vw, 1.45rem);
}

h1,
h2 {
  margin: 0;
  font-weight: 900;
  line-height: 0.92;
  letter-spacing: 0;
}

h1 {
  width: max-content;
  max-width: 100%;
  font-size: clamp(4.2rem, 15vw, 10.5rem);
  text-shadow: 0.06em 0.06em 0 var(--cyan), 0.1em 0.1em 0 var(--pink);
}

h1 span {
  display: block;
  white-space: nowrap;
}

.hero-logo-title {
  width: min(100%, 50rem);
  font-size: 0;
  line-height: 1;
  text-shadow: none;
}

.hero-logo-title img {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(10px 10px 0 var(--cyan)) drop-shadow(16px 16px 0 var(--pink));
}

.hero-announcement {
  display: grid;
  grid-template-columns: minmax(14rem, 1fr) auto;
  align-items: center;
  width: min(100%, 45rem);
  margin-top: -0.4rem;
  gap: clamp(0.6rem, 2vw, 1rem);
}

.hero-stamp {
  display: block;
  width: 100%;
  min-width: 0;
  padding: 0.45rem;
  border: 4px solid var(--line);
  background: white;
  box-shadow: 7px 7px 0 var(--ink);
  transform: rotate(-4deg);
}

.hero-date {
  display: grid;
  place-items: center;
  width: clamp(7.2rem, 13vw, 10rem);
  padding: 0.65rem 0.5rem;
  border: 4px solid var(--line);
  background: var(--acid);
  box-shadow: 6px 6px 0 var(--ink);
  transform: rotate(4deg);
}

.hero-date strong {
  font-family: Impact, "Arial Narrow", sans-serif;
  font-size: clamp(4.2rem, 9vw, 7rem);
  line-height: 0.82;
}

.hero-date span {
  font-family: Impact, "Arial Narrow", sans-serif;
  font-size: clamp(0.95rem, 2vw, 1.25rem);
  line-height: 1;
  white-space: nowrap;
}

.venue-logos {
  display: grid;
  gap: 0.45rem;
  width: min(100%, 38rem);
  margin-top: 1.1rem;
}

.venue-kicker {
  width: max-content;
  padding: 0.16rem 0.55rem 0.12rem;
  border: 3px solid var(--line);
  background: var(--ink);
  color: white;
  font-family: Impact, "Arial Narrow", sans-serif;
  font-size: clamp(1.05rem, 2.4vw, 1.45rem);
  line-height: 1;
  box-shadow: 4px 4px 0 var(--cyan);
  transform: rotate(-2deg);
}

.venue-logo-list {
  display: grid;
  grid-template-columns: minmax(6.5rem, 0.8fr) auto minmax(12rem, 1.45fr);
  align-items: center;
  gap: clamp(0.45rem, 1.6vw, 0.8rem);
}

.venue-logo {
  display: block;
  width: 100%;
  height: 4.8rem;
  min-width: 0;
  object-fit: contain;
  border: 3px solid var(--line);
  background: white;
  box-shadow: 5px 5px 0 var(--ink);
}

.venue-drop-logo {
  height: 4.1rem;
  padding: clamp(0.45rem, 1.5vw, 0.7rem);
  transform: rotate(2deg);
}

.venue-subcul-logo {
  justify-self: start;
  width: auto;
  max-width: 100%;
  height: 6.35rem;
  padding: clamp(0.4rem, 1.3vw, 0.65rem);
  transform: rotate(-1deg);
}

.venue-plus {
  color: var(--pink);
  font-family: Impact, "Arial Narrow", sans-serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1;
  text-shadow: 3px 3px 0 var(--line), 5px 5px 0 var(--acid);
}

h2 {
  font-size: clamp(2.3rem, 7vw, 5rem);
}

h2 span {
  display: block;
}

#about-title span {
  white-space: nowrap;
}

.lead {
  max-width: 38rem;
  margin: 1.5rem 0 0;
  font-size: clamp(1rem, 2vw, 1.18rem);
  font-weight: 700;
  line-height: 1.9;
  overflow-wrap: anywhere;
}

.lead span {
  display: block;
}

.hero-actions,
.ticket {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem;
}

.hero-actions {
  margin-top: 2rem;
}

.countdown {
  width: min(100%, 34rem);
  margin-top: 1.35rem;
  border: 3px solid var(--line);
  background: var(--ink);
  color: white;
  box-shadow: 5px 5px 0 var(--pink);
}

.countdown p {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.55rem;
  margin: 0;
  padding: 0.45rem 0.7rem;
  border-bottom: 3px solid var(--line);
  background: var(--acid);
  color: var(--ink);
  font-family: Impact, "Arial Narrow", sans-serif;
  font-size: clamp(1rem, 2vw, 1.35rem);
}

.countdown-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.countdown-grid div {
  display: grid;
  place-items: center;
  min-width: 0;
  padding: 0.65rem 0.35rem;
}

.countdown-grid div + div {
  border-left: 2px solid rgba(255, 255, 255, 0.28);
}

.countdown-grid strong {
  font-family: Impact, "Arial Narrow", sans-serif;
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  line-height: 0.95;
}

.countdown-grid span {
  margin-top: 0.18rem;
  color: var(--cyan);
  font-family: Impact, "Arial Narrow", sans-serif;
  font-size: 0.82rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.25rem;
  padding: 0.75rem 1.1rem;
  border: 3px solid var(--line);
  box-shadow: 5px 5px 0 var(--ink);
  font-weight: 900;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.button:hover {
  transform: translate(4px, 4px);
  box-shadow: 1px 1px 0 var(--ink);
}

.button.primary {
  background: var(--pink);
  color: white;
}

.button.ghost {
  background: white;
}

.section {
  padding: clamp(4rem, 8vw, 7rem) clamp(1rem, 4vw, 4rem);
  border-bottom: 4px solid var(--line);
}

.about,
.info,
.ticket-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  max-width: 1180px;
  margin: 0 auto;
  gap: clamp(2rem, 5vw, 4rem);
}

.about {
  display: block;
}

.section-heading {
  align-self: start;
}

.about-copy {
  display: grid;
  gap: 1rem;
  font-size: clamp(1rem, 2vw, 1.18rem);
  font-weight: 700;
  line-height: 1.95;
  overflow-wrap: anywhere;
}

.about-copy p,
.ticket p {
  margin: 0;
}

.info {
  position: relative;
  max-width: none;
  background:
    linear-gradient(90deg, rgba(255, 42, 138, 0.92) 0 1rem, transparent 1rem),
    var(--paper);
  overflow: hidden;
  isolation: isolate;
}

.info-board {
  position: relative;
  z-index: 1;
  border: 4px solid var(--line);
  background: white;
  box-shadow: var(--shadow);
}

.info .section-heading {
  position: relative;
  z-index: 1;
}

.arrow-field {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.arrow {
  position: absolute;
  width: clamp(6rem, 16vw, 13rem);
  height: auto;
  fill: none;
  stroke: var(--ink);
  stroke-width: 10;
  stroke-linecap: square;
  stroke-linejoin: miter;
  filter: drop-shadow(5px 5px 0 var(--cyan));
}

.arrow-1 {
  top: 10%;
  left: 4%;
  stroke: var(--pink);
  transform: rotate(-13deg);
}

.arrow-2 {
  top: 16%;
  right: 6%;
  stroke: var(--acid);
  filter: drop-shadow(5px 5px 0 var(--ink));
  transform: rotate(16deg);
}

.arrow-3 {
  left: 30%;
  bottom: 10%;
  stroke: var(--cyan);
  filter: drop-shadow(5px 5px 0 var(--pink));
  transform: rotate(184deg);
}

.arrow-4 {
  right: 2%;
  bottom: 18%;
  stroke: var(--red);
  transform: rotate(-28deg);
}

.arrow-5 {
  top: 46%;
  left: 0;
  width: clamp(5rem, 12vw, 10rem);
  stroke: var(--violet);
  filter: drop-shadow(4px 4px 0 var(--acid));
  transform: rotate(38deg);
}

.arrow-6 {
  top: 49%;
  right: 36%;
  width: clamp(4.5rem, 10vw, 8rem);
  stroke: var(--ink);
  filter: drop-shadow(4px 4px 0 var(--red));
  transform: rotate(-6deg);
}

.info-board dl {
  margin: 0;
}

.info-board dl > div {
  display: grid;
  grid-template-columns: 9rem 1fr;
  border-bottom: 3px solid var(--line);
}

.info-board dt,
.info-board dd {
  margin: 0;
  padding: 1rem;
  font-weight: 900;
}

.info-board dt {
  display: grid;
  place-items: center start;
  background: var(--ink);
  color: white;
  font-family: Impact, "Arial Narrow", sans-serif;
  font-size: 1.5rem;
}

.info h2,
#about-title,
.poster-note span {
  font-family: var(--serif-heavy);
  font-weight: 900;
}

.poster-note {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: center;
  padding: 1rem;
  background: var(--acid);
}

.poster-note span {
  padding: 0.35rem 0.7rem;
  border: 3px solid var(--red);
  color: var(--red);
  font-size: clamp(1.5rem, 4vw, 2.7rem);
  font-weight: 900;
  transform: rotate(-4deg);
}

.poster-note p {
  margin: 0;
  font-weight: 900;
}

.ticket {
  display: block;
  max-width: none;
  margin: 0;
  background:
    linear-gradient(135deg, rgba(0, 213, 255, 0.25), transparent 42%),
    var(--paper);
}

.ticket-inner {
  align-items: center;
}

.ticket h2 {
  margin-top: 0.35rem;
  font-family: Impact, "Arial Narrow", sans-serif;
}

.ticket p {
  max-width: 42rem;
  margin-top: 1.2rem;
  font-weight: 700;
  line-height: 1.9;
}

.ticket p span {
  display: block;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem clamp(1rem, 4vw, 4rem);
  margin: 0;
  background: var(--ink);
  color: white;
  font-family: Impact, "Arial Narrow", sans-serif;
  font-size: 1.35rem;
}

.footer p {
  margin: 0;
}

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

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

@media (max-width: 840px) {
  .site-header {
    position: absolute;
    align-items: flex-start;
  }

  .nav {
    gap: 0.2rem;
    font-size: 1.05rem;
  }

  .brand-powered {
    white-space: normal;
  }

  .hero {
    padding-top: 8.4rem;
  }

  .ticker {
    top: 5.4rem;
  }

  .hero-grid,
  .about,
  .info,
  .ticket-inner {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    min-height: 0;
  }

  h1 {
    width: max-content;
    font-size: clamp(3.05rem, 16vw, 7rem);
    text-shadow: 0.045em 0.045em 0 var(--cyan), 0.075em 0.075em 0 var(--pink);
  }

  .hero-logo-title {
    width: min(100%, 42rem);
    font-size: 0;
    text-shadow: none;
  }

  #about-title {
    font-size: clamp(2rem, 9vw, 4rem);
  }

}

@media (max-width: 560px) {
  .brand {
    gap: 0.5rem;
  }

  .brand-logo {
    width: 3.5rem;
    height: 2.4rem;
  }

  .brand-copy {
    display: flex;
    flex-wrap: wrap;
    gap: 0.1rem 0.35rem;
  }

  .brand-name {
    font-size: 0.78rem;
  }

  .brand-powered {
    font-size: 0.52rem;
  }

  .site-header {
    gap: 0.45rem;
    padding-inline: 0.75rem;
  }

  .nav {
    display: none;
  }

  .hero {
    padding-inline: 0.85rem;
  }

  .hero-copy,
  .lead {
    width: calc(100vw - 1.7rem);
    max-width: calc(100vw - 1.7rem);
  }

  .countdown {
    width: calc(100vw - 2rem);
    max-width: calc(100vw - 2rem);
    overflow: hidden;
  }

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

  .countdown-grid div {
    padding-block: 0.55rem;
  }

  .countdown-grid div:nth-child(3),
  .countdown-grid div:nth-child(4) {
    border-top: 2px solid rgba(255, 255, 255, 0.28);
  }

  .countdown-grid div:nth-child(3) {
    border-left: 0;
  }

  .countdown-grid strong {
    font-size: clamp(1.45rem, 9vw, 2.25rem);
  }

  .countdown-grid span {
    font-size: 0.72rem;
  }

  h1 {
    font-size: clamp(2.85rem, 15vw, 4.6rem);
  }

  .hero-logo-title {
    width: min(74vw, 19rem);
    max-width: min(74vw, 19rem);
    margin-inline: auto;
    font-size: 0;
  }

  .hero-logo-title img {
    filter: drop-shadow(5px 5px 0 var(--cyan)) drop-shadow(8px 8px 0 var(--pink));
  }

  #about-title {
    font-size: clamp(1.85rem, 8vw, 3rem);
  }

  .hero-announcement {
    grid-template-columns: 1fr;
    width: calc(100vw - 2rem);
    justify-items: start;
    margin-top: 0.1rem;
  }

  .hero-stamp {
    width: min(100%, 22rem);
    transform: rotate(-2deg);
  }

  .hero-date {
    justify-self: center;
    margin-top: -1.35rem;
    width: 7.2rem;
    transform: rotate(3deg);
  }

  .venue-logos {
    width: calc(100vw - 2rem);
    max-width: calc(100vw - 2rem);
    margin-top: 1.25rem;
  }

  .venue-logo-list {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 0.25rem;
  }

  .venue-logo {
    width: min(calc(100% - 0.9rem), 19rem);
    box-shadow: 4px 4px 0 var(--ink);
  }

  .venue-drop-logo {
    height: 3.5rem;
    width: min(72vw, 14rem);
  }

  .venue-subcul-logo {
    justify-self: center;
    width: auto;
    max-width: min(calc(100% - 0.9rem), 18rem);
    height: 5.8rem;
  }

  .venue-plus {
    font-size: 2rem;
    transform: rotate(8deg);
  }

  .countdown p {
    display: grid;
    gap: 0.05rem;
    font-size: 0.95rem;
  }

  .info-board dl > div {
    grid-template-columns: 1fr;
  }

  .info-board dt {
    padding-block: 0.45rem;
  }

  .poster-note {
    grid-template-columns: 1fr;
  }

  .footer {
    flex-direction: column;
  }
}

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