:root {
  --page-bg: #000;
  --panel-bg: rgba(0, 0, 0, 0.92);
  --text-main: #ffffff;
  --text-muted: rgba(255, 255, 255, 0.72);
  --cta-start: #ef4b7d;
  --cta-end: #bf31ff;
  --poster-shadow: 0 34px 90px rgba(0, 0, 0, 0.48);
  --cover-image: linear-gradient(180deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.02));
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  position: relative;
  margin: 0;
  overflow-x: hidden;
  font-family: "Noto Sans SC", sans-serif;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.01) 46%, rgba(0, 0, 0, 0.96) 52%, #000 100%),
    #000;
  color: var(--text-main);
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}

body::before {
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.08), transparent 44%),
    var(--cover-image) left center / 48% auto no-repeat;
  filter: blur(32px) saturate(1.05);
  opacity: 0.62;
  transform: scale(1.12);
}

body::after {
  background:
    radial-gradient(circle at left center, rgba(255, 191, 214, 0.38), transparent 32%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06), transparent 28%);
  opacity: 0.9;
}

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

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

.ambient,
.page-mask {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.ambient-left {
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.14), transparent 30%);
}

.ambient-right {
  background: linear-gradient(270deg, rgba(0, 0, 0, 0.86), transparent 30%);
}

.page-mask {
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.06) 0%, rgba(0, 0, 0, 0.22) 48%, rgba(0, 0, 0, 0.94) 57%, #000 100%);
}

.landing-shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(380px, 48vw) minmax(360px, 52vw);
  align-items: stretch;
}

.poster-stage,
.content-stage {
  position: relative;
  display: flex;
  align-items: center;
}

.poster-stage {
  justify-content: center;
  padding: 34px 30px 34px 34px;
}

.poster-shadow {
  position: absolute;
  width: min(70vh, 520px);
  height: min(70vh, 760px);
  border-radius: 42px;
  background: rgba(255, 191, 214, 0.42);
  filter: blur(34px);
  opacity: 0.55;
  transform: translateY(24px);
}

.poster-card {
  position: relative;
  width: min(68vh, 500px);
  max-width: 100%;
  aspect-ratio: 0.68;
  border-radius: 3px;
  border: 6px solid #111;
  overflow: hidden;
  box-shadow: var(--poster-shadow);
  background: #161616;
}

.poster-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.poster-fallback {
  display: flex;
  width: 100%;
  height: 100%;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  background: linear-gradient(180deg, #252525, #111);
}

.poster-fallback-logo {
  width: 88px;
  height: 88px;
  border-radius: 50%;
}

.poster-fallback-name {
  font-size: 1.5rem;
  font-weight: 800;
}

.content-stage {
  padding: 34px clamp(28px, 4vw, 64px);
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.94), rgba(0, 0, 0, 0.98));
}

.content-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 26%);
  pointer-events: none;
}

.brand-block,
.copy-block,
.footer-meta {
  position: relative;
  z-index: 1;
}

.content-stage {
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand-logo {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: #111;
  box-shadow: 0 0 0 2px rgba(255, 191, 0, 0.92);
}

.brand-name {
  font-size: clamp(1.9rem, 2.2vw, 2.7rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.copy-block {
  width: 100%;
  max-width: 560px;
  margin: auto 0;
}

.title {
  margin: 0;
  font-size: clamp(3rem, 5vw, 5rem);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.subline {
  margin: 26px 0 0;
  color: var(--text-muted);
  font-size: clamp(1rem, 1.3vw, 1.35rem);
  line-height: 1.7;
}

.cta-button {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  width: min(100%, 540px);
  padding: 22px 28px;
  border-radius: 12px;
  background: linear-gradient(90deg, var(--cta-start), var(--cta-end));
  box-shadow: 0 24px 54px rgba(207, 60, 184, 0.28);
  font-size: clamp(1.6rem, 2vw, 2.3rem);
  font-weight: 800;
  transition: box-shadow 180ms ease;
  transform-origin: center;
  animation: heartbeatScale 1.6s ease-in-out infinite;
}

.cta-button:hover {
  box-shadow: 0 28px 60px rgba(207, 60, 184, 0.34);
}

.cta-icon {
  position: relative;
  width: 60px;
  height: 60px;
  flex: 0 0 60px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
}

.cta-icon::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 53%;
  transform: translate(-50%, -50%);
  width: 0;
  height: 0;
  border-top: 16px solid transparent;
  border-bottom: 16px solid transparent;
  border-left: 24px solid #fff;
}

.footer-meta {
  display: flex;
  flex-direction: column;
  gap: 16px;
  color: var(--text-muted);
  font-size: 0.98rem;
}

.footer-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

@keyframes heartbeatScale {
  0% {
    transform: scale(0.7);
  }
  18% {
    transform: scale(1);
  }
  32% {
    transform: scale(0.88);
  }
  48% {
    transform: scale(1);
  }
  100% {
    transform: scale(0.7);
  }
}

@media (max-width: 920px) {
  body {
    background: #000;
  }

  body::before {
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent 36%),
      var(--cover-image) center top / cover no-repeat;
    opacity: 0.68;
    filter: blur(22px) saturate(1.04);
    transform: scale(1.08);
  }

  .page-mask {
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.36), rgba(0, 0, 0, 0.82) 44%, rgba(0, 0, 0, 0.94) 100%);
  }

  .landing-shell {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 18px 18px 28px;
  }

  .poster-stage,
  .content-stage {
    padding: 0;
    background: transparent;
  }

  .brand-block {
    width: 100%;
    justify-content: center;
    margin-top: 10px;
  }

  .brand-logo {
    width: 58px;
    height: 58px;
  }

  .brand-name {
    font-size: 1.8rem;
  }

  .content-stage {
    display: contents;
  }

  .brand-block,
  .copy-block,
  .poster-stage,
  .cta-button,
  .footer-meta {
    position: relative;
    z-index: 1;
  }

  .brand-block {
    order: 1;
  }

  .copy-block {
    order: 2;
    margin: 18px 0 12px;
    text-align: center;
  }

  .title {
    font-size: clamp(2.2rem, 8vw, 3.5rem);
  }

  .subline {
    margin-top: 16px;
    font-size: 1rem;
  }

  .poster-stage {
    order: 3;
    margin-top: 10px;
    margin-bottom: 18px;
  }

  .poster-card {
    width: min(100%, 340px);
    border-width: 4px;
    border-radius: 18px;
  }

  .poster-shadow {
    width: min(88vw, 360px);
    height: 460px;
    border-radius: 36px;
    transform: translateY(16px);
  }

  .cta-button {
    order: 4;
    width: 100%;
    max-width: none;
    font-size: 1.4rem;
    padding: 18px 22px;
    gap: 18px;
    margin-top: 28px;
  }

  .cta-icon {
    width: 52px;
    height: 52px;
    flex-basis: 52px;
  }

  .cta-icon::before {
    border-top-width: 14px;
    border-bottom-width: 14px;
    border-left-width: 22px;
  }

  .footer-meta {
    order: 5;
    width: 100%;
    align-items: center;
    text-align: center;
    margin-top: 22px;
  }
}