:root {
  color-scheme: dark;
  --bg: #090b10;
  --panel: #141822;
  --panel-strong: #1d2330;
  --text: #f6f7fb;
  --muted: #aeb6c6;
  --line: rgba(255, 255, 255, 0.12);
  --cyan: #35d6ff;
  --pink: #ff5d9f;
  --lime: #9df45d;
  --amber: #ffb23f;
  --red: #ff5a52;
  --green: #49c783;
  --blue: #5d8dff;
  --shadow: 0 18px 42px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  min-height: 100%;
  margin: 0;
  font-family: "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 18%, rgba(53, 214, 255, 0.18), transparent 26rem),
    radial-gradient(circle at 82% 0%, rgba(255, 93, 159, 0.16), transparent 24rem),
    linear-gradient(145deg, #080a0f 0%, #121722 48%, #0c1119 100%);
}

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

.site-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(9, 11, 16, 0.82);
  backdrop-filter: blur(16px);
}

.site-nav {
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 8px;
  background: linear-gradient(135deg, var(--cyan), var(--pink));
  color: #071018;
  box-shadow: 0 10px 26px rgba(53, 214, 255, 0.22);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a,
.ghost-button,
.play-button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 8px;
  font-weight: 700;
}

.nav-links a {
  padding: 0 14px;
  color: var(--muted);
}

.nav-links a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 34px;
  align-items: center;
  padding: 58px 0 34px;
}

.hero-copy {
  max-width: 660px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 0.83rem;
  font-weight: 800;
  letter-spacing: 0;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(2.7rem, 7vw, 5.6rem);
  line-height: 0.96;
  letter-spacing: 0;
}

.hero-copy p {
  max-width: 58ch;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.play-button {
  padding: 0 18px;
  border: 0;
  background: #f8fbff;
  color: #0c1119;
  box-shadow: 0 12px 30px rgba(255, 255, 255, 0.14);
}

.ghost-button {
  padding: 0 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
}

.hero-stage {
  position: relative;
  min-height: 430px;
}

.hero-tile {
  position: absolute;
  display: grid;
  overflow: hidden;
  width: 48%;
  min-width: 178px;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero-tile img {
  width: 92%;
  height: 92%;
  object-fit: contain;
  filter: drop-shadow(0 18px 20px rgba(0, 0, 0, 0.28));
}

.hero-tile:nth-child(1) {
  top: 0;
  left: 5%;
  background: linear-gradient(145deg, rgba(157, 244, 93, 0.24), rgba(255, 93, 159, 0.17));
}

.hero-tile:nth-child(2) {
  top: 52px;
  right: 2%;
  background: linear-gradient(145deg, rgba(255, 178, 63, 0.24), rgba(255, 90, 82, 0.18));
}

.hero-tile:nth-child(3) {
  bottom: 28px;
  left: 0;
  background: linear-gradient(145deg, rgba(93, 141, 255, 0.22), rgba(255, 178, 63, 0.18));
}

.hero-tile:nth-child(4) {
  right: 10%;
  bottom: 0;
  background: linear-gradient(145deg, rgba(73, 199, 131, 0.2), rgba(255, 90, 82, 0.18));
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin: 16px 0 18px;
}

.section-heading h2 {
  margin-bottom: 0;
  font-size: clamp(1.55rem, 3vw, 2.2rem);
  letter-spacing: 0;
}

.section-heading p {
  max-width: 42ch;
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.7;
}

.game-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  padding-bottom: 56px;
}

.game-card {
  display: grid;
  min-height: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(20, 24, 34, 0.92);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.22);
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.game-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.32);
  background: rgba(29, 35, 48, 0.96);
}

.thumb {
  display: grid;
  aspect-ratio: 1;
  place-items: center;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
}

.thumb img {
  width: 88%;
  height: 88%;
  object-fit: contain;
}

.game-card[data-tone="fruit"] .thumb {
  background: linear-gradient(145deg, rgba(157, 244, 93, 0.32), rgba(255, 93, 159, 0.16));
}

.game-card[data-tone="mars"] .thumb {
  background: linear-gradient(145deg, rgba(255, 178, 63, 0.32), rgba(255, 90, 82, 0.18));
}

.game-card[data-tone="ocean"] .thumb {
  background: linear-gradient(145deg, rgba(53, 214, 255, 0.22), rgba(255, 178, 63, 0.18));
}

.game-card[data-tone="zombie"] .thumb {
  background: linear-gradient(145deg, rgba(73, 199, 131, 0.24), rgba(255, 90, 82, 0.16));
}

.game-body {
  display: grid;
  gap: 12px;
  padding: 18px;
}

.game-body h3 {
  margin-bottom: 0;
  font-size: 1.22rem;
  letter-spacing: 0;
}

.game-body p {
  min-height: 5.8em;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 7px;
  padding: 0 9px;
  color: #dce3f0;
  font-size: 0.78rem;
  font-weight: 700;
}

.card-link {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  font-weight: 800;
}

.card-link:hover {
  background: rgba(255, 255, 255, 0.17);
}

.detail-main {
  display: grid;
  min-height: calc(100vh - 72px);
  grid-template-columns: minmax(0, 1fr) minmax(300px, 420px);
  gap: 46px;
  align-items: center;
  padding: 48px 0;
}

.detail-copy h1 {
  max-width: 760px;
}

.detail-copy p {
  max-width: 60ch;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.85;
}

.detail-art {
  display: grid;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(20, 24, 34, 0.78);
  box-shadow: var(--shadow);
}

.detail-art img {
  width: 88%;
  height: 88%;
  object-fit: contain;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 28px 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.06);
  color: #dce3f0;
  font-weight: 700;
}

.tone-fruit {
  --accent: var(--lime);
}

.tone-mars {
  --accent: var(--amber);
}

.tone-ocean {
  --accent: var(--cyan);
}

.tone-zombie {
  --accent: var(--green);
}

.detail-page .eyebrow {
  color: var(--accent);
}

.detail-page .play-button {
  background: var(--accent);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 24px 0;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 980px) {
  .hero,
  .detail-main {
    grid-template-columns: 1fr;
  }

  .hero-stage {
    min-height: 360px;
  }

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

  .feature-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .site-shell {
    width: min(100% - 22px, 1180px);
  }

  .site-nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .nav-links a {
    flex: 0 0 auto;
  }

  .hero {
    padding-top: 36px;
  }

  .hero-stage {
    min-height: 300px;
  }

  .hero-tile {
    min-width: 140px;
  }

  .section-heading {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .game-body p {
    min-height: auto;
  }
}