:root {
  --color-primary: #d7263d;
  --color-secondary: #f6aa1c;
  --color-bg: #f6f8fc;
  --color-surface: #ffffff;
  --color-text: #1f2633;
  --color-muted: #5b6272;
  --color-line: rgba(31, 38, 51, 0.1);
  --radius-lg: 32px;
  --radius-md: 18px;
  --radius-sm: 10px;
  --shadow-soft: 0 40px 120px rgba(15, 23, 42, 0.18);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0b101a;
    --color-surface: #161c2c;
    --color-text: #f8f9fc;
    --color-muted: #c4c9d6;
    --color-line: rgba(255, 255, 255, 0.12);
    --shadow-soft: 0 30px 80px rgba(0, 0, 0, 0.55);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", "Nunito", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  background: var(--color-bg);
  color: var(--color-text);
}

img,
video {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-md);
}

a {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
}

.container {
  width: min(1200px, 92vw);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100%;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: #fff;
  transition: top 0.2s ease;
  z-index: 30;
}

.skip-link:focus {
  top: 1rem;
}

.hero {
  position: relative;
  padding: 2rem 0 4rem;
  background: radial-gradient(circle at top left, #ffe0e8 0%, rgba(247, 248, 252, 0) 45%), var(--color-surface);
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.hero__nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding-bottom: 1rem;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-text);
}

.site-nav {
  position: relative;
}

#navMenu {
  display: flex;
  list-style: none;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

#navMenu a {
  color: var(--color-text);
  padding-bottom: 0.25rem;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

#navMenu a:hover,
#navMenu a:focus-visible {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 0.3rem;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid var(--color-line);
  background: var(--color-surface);
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 60%;
  margin-inline: auto;
  background: var(--color-text);
}

body.nav-open {
  overflow: hidden;
}

.hero__inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 3rem;
  padding-top: 2rem;
}

.eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 0.4rem;
}

.hero__lead {
  font-size: 1.1rem;
  color: var(--color-muted);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.hero__cta .btn {
  flex: 1 1 200px;
  text-align: center;
}

.hero__ticker {
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  background: rgba(215, 38, 61, 0.08);
  border: 1px solid rgba(215, 38, 61, 0.2);
}

.ticker__label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin: 0;
  color: var(--color-muted);
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 0;
}

.hero__stats dt {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--color-muted);
}

.hero__stats dd {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 1.4rem;
  border-radius: 999px;
  border: 1px solid var(--color-line);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:focus-visible {
  outline: 3px solid rgba(246, 170, 28, 0.45);
  outline-offset: 3px;
}

.btn:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  box-shadow: 0 15px 40px rgba(215, 38, 61, 0.35);
}

.btn--ghost {
  background: transparent;
  border-color: var(--color-line);
}

.block {
  margin: 4rem 0;
  padding: 3rem 0;
}

.block--alert {
  background: rgba(215, 38, 61, 0.03);
}

.block--poster {
  background: rgba(15, 23, 42, 0.02);
}

.block--comic {
  background: rgba(246, 170, 28, 0.04);
}

.comic-board {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  margin-top: 2rem;
}

.comic-board__single {
  width: min(920px, 100%);
  height: auto;
  display: block;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-line);
  background: var(--color-surface);
  box-shadow: 0 25px 60px rgba(15, 23, 42, 0.08);
}

.block--game {
  background: linear-gradient(135deg, rgba(215, 38, 61, 0.08), rgba(246, 170, 28, 0.08));
}

.block__header h2 {
  margin: 0 0 0.4rem;
  font-size: clamp(1.5rem, 2vw + 1rem, 2.4rem);
}

.block__header p {
  margin: 0;
  color: var(--color-muted);
}

.alert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-block: 2rem;
}

.card {
  padding: 1.75rem;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
}

.card--alert h3 {
  margin-top: 0.5rem;
}

.badge {
  display: inline-block;
  font-size: 0.8rem;
  padding: 0.2rem 0.7rem;
  border-radius: 999px;
  background: rgba(246, 170, 28, 0.2);
  color: var(--color-secondary);
  letter-spacing: 0.15em;
}

.alert-tools {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  align-items: stretch;
}

.alert-tools__list,
.alert-tools__topics {
  background: var(--color-surface);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-line);
}

.alert-tools__topics ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.alert-tools__topics li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--color-line);
}

.alert-tools__topics li strong {
  font-size: 0.9rem;
  color: var(--color-primary);
}

.alert-tools__topics li:last-child {
  border-bottom: none;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.poster-slider {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1.5rem;
  margin-top: 2rem;
}

.poster-slider__control {
  width: 48px;
  height: 48px;
  border-radius: 999px;
  border: 1px solid var(--color-line);
  background: var(--color-surface);
  cursor: pointer;
  font-size: 1.4rem;
}

.poster-figure {
  padding: 1.5rem;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-line);
  box-shadow: 0 30px 90px rgba(15, 23, 42, 0.12);
  text-align: center;
}

.poster-figure img {
  margin-inline: auto;
  border-radius: var(--radius-md);
}

.poster-figure__title {
  font-weight: 700;
  margin: 1rem 0 0.2rem;
}

.poster-figure__meta {
  margin: 0;
  color: var(--color-muted);
}

.poster-figure__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
  margin-top: 1rem;
}

.poster-thumbs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.8rem;
  margin-top: 1.5rem;
}

.poster-thumb {
  border: 1px solid transparent;
  background: transparent;
  padding: 0.4rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.poster-thumb img {
  border-radius: var(--radius-sm);
  opacity: 0.8;
}

.poster-thumb.is-active {
  border-color: var(--color-primary);
}

.filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 2rem;
}

.filter__btn {
  padding: 0.45rem 1.2rem;
  border-radius: 999px;
  border: 1px solid var(--color-line);
  background: var(--color-surface);
  cursor: pointer;
}

.filter__btn.is-active {
  background: rgba(215, 38, 61, 0.12);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.grid {
  margin-top: 2rem;
}

.grid--cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.card--wallpaper img {
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
}

.card-body {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.tag-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag-list li {
  font-size: 0.8rem;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: rgba(31, 38, 51, 0.08);
}

.download-row {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.note {
  color: var(--color-muted);
  font-size: 0.9rem;
}

.game {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  align-items: center;
}

.game__features {
  padding-left: 1rem;
  color: var(--color-muted);
}

.game__media video {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.25);
}

.game__links {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.game__caption {
  margin: 0.5rem 0 0;
  color: var(--color-muted);
}

.back-to-top {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  width: 52px;
  height: 52px;
  border-radius: 999px;
  border: none;
  background: var(--color-primary);
  color: #fff;
  cursor: pointer;
  transform: translateY(150%);
  transition: transform 0.3s ease;
  box-shadow: 0 20px 60px rgba(215, 38, 61, 0.35);
  z-index: 20;
}

.back-to-top.is-visible {
  transform: translateY(0);
}

.site-footer {
  padding: 2rem 0 3rem;
  text-align: center;
  color: var(--color-muted);
}

[data-animate] {
  opacity: 0;
  transform: translateY(45px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 720px) {
  #navMenu {
    position: absolute;
    top: 60px;
    right: 0;
    flex-direction: column;
    background: var(--color-surface);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    display: none;
    min-width: 220px;
  }

  #navMenu.is-open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    padding-bottom: 3rem;
  }

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

  .poster-slider__control {
    justify-self: center;
  }
}