:root {
  color-scheme: dark;
  --bg: oklch(0.07 0 0);
  --surface: oklch(0.14 0.025 238);
  --surface-deep: oklch(0.105 0.018 238);
  --ink: oklch(0.97 0.015 225);
  --muted: oklch(0.73 0.045 230);
  --faint: oklch(0.55 0.045 232);
  --primary: oklch(0.72 0.15 232);
  --primary-deep: oklch(0.38 0.16 238);
  --signal: oklch(0.73 0.19 48);
  --signal-pale: oklch(0.91 0.08 78);
  --line: oklch(0.72 0.15 232 / 0.3);
  --line-bright: oklch(0.82 0.13 228 / 0.72);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-width: 320px;
  min-height: 100%;
  margin: 0;
}

body {
  min-height: 100vh;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
}

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

.poster {
  position: relative;
  display: grid;
  width: 100vw;
  min-height: 100vh;
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  isolation: isolate;
  overflow: hidden;
  background:
    radial-gradient(circle at 73% 47%, oklch(0.38 0.16 238 / 0.34), transparent 27%),
    radial-gradient(circle at 68% 44%, oklch(0.73 0.19 48 / 0.14), transparent 18%),
    linear-gradient(132deg, oklch(0.055 0 0) 0%, oklch(0.12 0.03 238) 56%, oklch(0.07 0 0) 100%);
}

.poster::before,
.poster::after {
  content: "";
  position: absolute;
  z-index: -1;
  pointer-events: none;
}

.poster::before {
  inset: 0;
  background:
    linear-gradient(90deg, transparent 0 5%, oklch(0.72 0.15 232 / 0.08) 5.1%, transparent 5.2%),
    linear-gradient(0deg, transparent 0 13%, oklch(0.72 0.15 232 / 0.07) 13.1%, transparent 13.2%);
  background-size: 11vw 100%, 100% 8vw;
  mask-image: linear-gradient(90deg, oklch(0 0 0 / 0.8), transparent 76%);
}

.poster::after {
  width: 36vw;
  height: 1px;
  top: 16%;
  right: -4vw;
  background: linear-gradient(90deg, transparent, var(--signal), transparent);
  box-shadow:
    0 10vh 0 oklch(0.72 0.15 232 / 0.35),
    0 20vh 0 oklch(0.72 0.15 232 / 0.18);
  transform: rotate(-22deg);
}

.stadium-light,
.stadium-haze,
.score-lines {
  position: absolute;
  z-index: -1;
  pointer-events: none;
}

.stadium-light {
  width: 3px;
  height: 70vh;
  top: -9vh;
  background: linear-gradient(to bottom, var(--signal-pale), oklch(0.72 0.15 232 / 0.32), transparent 88%);
  filter: blur(1px);
  opacity: 0.72;
  transform-origin: top;
}

.light-left {
  left: 9vw;
  transform: rotate(-36deg);
  box-shadow: 0 0 40px 7px oklch(0.72 0.15 232 / 0.24);
}

.light-right {
  right: 4vw;
  transform: rotate(34deg);
  box-shadow: 0 0 46px 8px oklch(0.73 0.19 48 / 0.26);
}

.stadium-haze {
  width: 70vw;
  height: 22vh;
  right: -8vw;
  bottom: 22vh;
  background: radial-gradient(ellipse, oklch(0.72 0.15 232 / 0.21), transparent 67%);
  filter: blur(22px);
}

.score-lines {
  width: 48vw;
  height: 46vh;
  right: -13vw;
  bottom: 13vh;
  border: 1px solid oklch(0.72 0.15 232 / 0.14);
  border-radius: 50%;
  transform: perspective(320px) rotateX(68deg);
  box-shadow:
    0 0 0 6vw oklch(0.72 0.15 232 / 0.035),
    0 0 0 12vw oklch(0.72 0.15 232 / 0.025);
}

.poster-header,
.poster-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.poster-header {
  padding: clamp(22px, 3vw, 54px) clamp(28px, 5vw, 96px) 0;
}

.poster-brand,
.poster-status,
.callout-row {
  display: flex;
  align-items: center;
}

.poster-brand {
  gap: 14px;
}

.brand-icon {
  display: grid;
  width: 36px;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--primary);
  transform: rotate(45deg);
  box-shadow: 0 0 18px oklch(0.72 0.15 232 / 0.34);
}

.brand-icon i {
  width: 12px;
  aspect-ratio: 1;
  background: var(--signal);
}

.poster-brand strong,
.poster-brand small {
  display: block;
}

.poster-brand strong,
.poster-status,
.poster-kicker,
.callout-row,
.broadcast dt,
.broadcast small,
.poster-footer,
.visual-caption,
.pk-core span,
.pk-core small {
  font-family: "Arial Narrow", "DIN Condensed", Arial, sans-serif;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.poster-brand strong {
  color: var(--primary);
  font-size: clamp(12px, 0.9vw, 17px);
}

.poster-brand small {
  margin-top: 4px;
  color: var(--muted);
  font-size: clamp(11px, 0.72vw, 14px);
}

.poster-status {
  gap: 10px;
  color: var(--muted);
  font-size: clamp(12px, 0.8vw, 15px);
}

.poster-status strong {
  border: 1px solid oklch(0.73 0.19 48 / 0.7);
  padding: 7px 13px 6px;
  color: var(--signal-pale);
  font-size: 0.92em;
  letter-spacing: 0.08em;
}

.status-dot {
  width: 8px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 15px var(--signal);
  animation: ignitionPulse 2.2s ease-in-out infinite;
}

.poster-stage {
  display: grid;
  min-height: 0;
  grid-template-columns: minmax(0, 1fr) minmax(520px, 0.92fr);
  align-items: center;
  gap: clamp(20px, 3vw, 56px);
  padding: clamp(14px, 2vh, 34px) clamp(28px, 5vw, 96px) clamp(12px, 2vh, 30px);
}

.poster-copy {
  position: relative;
  z-index: 2;
  max-width: 920px;
}

.poster-kicker {
  display: flex;
  align-items: center;
  gap: 18px;
  margin: 0 0 clamp(12px, 1.4vh, 22px);
  color: var(--muted);
  font-size: clamp(13px, 0.9vw, 18px);
}

.poster-kicker b {
  border: 1px solid oklch(0.73 0.19 48 / 0.8);
  background: oklch(0.73 0.19 48 / 0.13);
  padding: 7px 12px 6px;
  color: var(--signal-pale);
  font-size: 1.05em;
  letter-spacing: 0.12em;
}

h1 {
  margin: 0;
  color: var(--ink);
  font-family: "Arial Black", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: clamp(74px, 8.1vw, 156px);
  font-weight: 950;
  letter-spacing: -0.04em;
  line-height: 0.92;
  text-wrap: balance;
}

h1 span,
h1 strong {
  display: block;
}

h1 strong {
  color: var(--signal-pale);
}

h1 em {
  color: var(--signal);
  font-size: 1.08em;
  font-style: normal;
  text-shadow: 0 0 26px oklch(0.73 0.19 48 / 0.42);
}

.poster-slogan {
  margin: clamp(17px, 2.2vh, 28px) 0 0;
  color: var(--primary);
  font-size: clamp(28px, 2.15vw, 42px);
  font-weight: 900;
  letter-spacing: 0.08em;
}

.poster-description {
  max-width: 690px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: clamp(16px, 1.05vw, 21px);
  line-height: 1.8;
  text-wrap: pretty;
}

.callout-row {
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(18px, 3vh, 34px);
}

.callout-row span {
  border: 1px solid oklch(0.72 0.15 232 / 0.5);
  background: oklch(0.38 0.16 238 / 0.18);
  padding: 7px 12px 6px;
  color: var(--primary);
  font-size: clamp(11px, 0.75vw, 14px);
}

.battle-visual {
  position: relative;
  display: grid;
  width: min(42vw, 680px);
  aspect-ratio: 1;
  place-items: center;
  justify-self: center;
}

.core-glow,
.arena-ring,
.strike-mark,
.pk-core,
.visual-caption {
  position: absolute;
}

.core-glow {
  width: 70%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, oklch(0.73 0.19 48 / 0.24), oklch(0.38 0.16 238 / 0.2) 46%, transparent 72%);
  filter: blur(8px);
  animation: coreBreath 4.4s ease-in-out infinite;
}

.arena-ring {
  aspect-ratio: 1;
  border-radius: 50%;
}

.ring-outer {
  width: 94%;
  border: 1px solid oklch(0.72 0.15 232 / 0.34);
  border-top-color: var(--signal);
  border-right-color: oklch(0.73 0.19 48 / 0.18);
  animation: ringTurn 21s linear infinite;
}

.ring-mid {
  width: 79%;
  border: 12px solid oklch(0.72 0.15 232 / 0.06);
  border-top-color: oklch(0.72 0.15 232 / 0.52);
  border-left-color: oklch(0.73 0.19 48 / 0.52);
  animation: ringTurn 15s linear infinite reverse;
}

.ring-inner {
  width: 62%;
  border: 1px solid oklch(0.91 0.08 78 / 0.35);
  box-shadow:
    0 0 0 9px oklch(0.72 0.15 232 / 0.045),
    inset 0 0 42px oklch(0.38 0.16 238 / 0.38);
}

.strike-mark {
  width: 77%;
  filter: drop-shadow(0 0 18px oklch(0.73 0.19 48 / 0.33));
}

.strike-one {
  fill: oklch(0.73 0.19 48 / 0.22);
  stroke: var(--signal);
  stroke-width: 3;
}

.strike-two {
  fill: oklch(0.91 0.08 78 / 0.12);
  stroke: var(--signal-pale);
  stroke-width: 1.2;
}

.pk-core {
  display: grid;
  place-items: center;
  transform: rotate(-6deg);
}

.pk-core span,
.pk-core small {
  color: var(--primary);
  font-size: clamp(11px, 0.88vw, 17px);
}

.pk-core strong {
  color: var(--ink);
  font-family: "Arial Black", Arial, sans-serif;
  font-size: clamp(104px, 11vw, 196px);
  letter-spacing: -0.13em;
  line-height: 0.78;
  text-shadow:
    -8px 8px 0 oklch(0.38 0.16 238),
    8px -8px 0 oklch(0.73 0.19 48 / 0.88);
}

.visual-caption {
  color: var(--muted);
  font-size: clamp(10px, 0.68vw, 13px);
}

.caption-top {
  top: 10%;
  right: 11%;
}

.caption-bottom {
  bottom: 11%;
  left: 6%;
  color: var(--signal-pale);
}

.broadcast {
  display: grid;
  grid-template-columns: minmax(140px, 0.62fr) minmax(0, 4.5fr) minmax(132px, 0.7fr);
  gap: 0;
  margin: 0 clamp(28px, 5vw, 96px);
  border-top: 1px solid oklch(0.72 0.15 232 / 0.58);
  border-bottom: 1px solid oklch(0.72 0.15 232 / 0.3);
  background: linear-gradient(90deg, oklch(0.38 0.16 238 / 0.25), oklch(0.105 0.018 238 / 0.82));
}

.broadcast-lead {
  display: flex;
  min-height: 150px;
  flex-direction: column;
  justify-content: center;
  border-right: 1px solid oklch(0.72 0.15 232 / 0.3);
  padding: 18px;
}

.broadcast-lead span {
  color: var(--primary);
  font-size: clamp(15px, 1vw, 20px);
  font-weight: 800;
}

.broadcast-lead strong {
  margin-top: 6px;
  color: var(--signal);
  font-family: "Arial Black", Arial, sans-serif;
  font-size: clamp(29px, 2.2vw, 44px);
  letter-spacing: -0.03em;
}

.broadcast-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr 1.75fr 1.65fr;
  margin: 0;
}

.broadcast-item {
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: center;
  border-right: 1px solid oklch(0.72 0.15 232 / 0.22);
  padding: 18px clamp(15px, 1.4vw, 28px);
}

.broadcast dt {
  color: var(--primary);
  font-size: clamp(12px, 0.75vw, 15px);
}

.broadcast dd {
  margin: 9px 0 7px;
  color: var(--ink);
  font-size: clamp(17px, 1.28vw, 25px);
  font-weight: 900;
  line-height: 1.2;
  text-wrap: balance;
}

.broadcast small {
  color: var(--muted);
  font-size: clamp(10px, 0.63vw, 12px);
  letter-spacing: 0.035em;
  line-height: 1.45;
  text-transform: none;
}

.reward-item dd {
  color: var(--signal-pale);
}

.signup-item dd {
  color: var(--signal);
}

.qr-wrap {
  display: grid;
  place-items: center;
  padding: 11px;
}

.qr-placeholder {
  display: grid;
  width: 94px;
  aspect-ratio: 1;
  grid-template-columns: repeat(17, 1fr);
  gap: 1px;
  border: 5px solid var(--ink);
  background: var(--ink);
}

.qr-placeholder i {
  background: var(--ink);
}

.qr-placeholder .is-dark {
  background: var(--surface-deep);
}

.qr-wrap span {
  margin-top: 6px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 800;
}

.poster-footer {
  padding: clamp(15px, 2vh, 24px) clamp(28px, 5vw, 96px);
  color: var(--faint);
  font-size: clamp(10px, 0.7vw, 13px);
}

.poster-footer b {
  color: var(--muted);
}

.poster-footer i {
  color: var(--signal);
  font-style: normal;
}

@keyframes ignitionPulse {
  50% {
    opacity: 0.55;
    transform: scale(0.72);
  }
}

@keyframes coreBreath {
  50% {
    opacity: 0.72;
    transform: scale(1.08);
  }
}

@keyframes ringTurn {
  to {
    transform: rotate(360deg);
  }
}

@media (max-aspect-ratio: 4 / 3) {
  body {
    overflow: auto;
  }

  .poster {
    min-height: 100vh;
  }

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

  .battle-visual {
    display: none;
  }

  .broadcast {
    grid-template-columns: 1fr;
  }

  .broadcast-lead {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid oklch(0.72 0.15 232 / 0.3);
  }

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

  .qr-wrap {
    display: none;
  }
}

@media (max-width: 760px) {
  body {
    overflow: auto;
  }

  .poster-header,
  .poster-footer {
    gap: 14px;
    align-items: flex-start;
    flex-direction: column;
  }

  .poster-stage {
    padding-top: 54px;
    padding-bottom: 54px;
  }

  h1 {
    font-size: clamp(64px, 18vw, 110px);
  }

  .poster-kicker span,
  .poster-status span:nth-child(2) {
    display: none;
  }

  .broadcast-grid {
    grid-template-columns: 1fr;
  }
}

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