:root {
  color-scheme: light;
  --ink: #172026;
  --muted: #687782;
  --line: #d8e0e6;
  --paper: #f7f5ef;
  --surface: #ffffff;
  --shadow: 0 22px 60px rgba(39, 49, 58, 0.14);
  --accent: #2b6f8c;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family:
    Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui,
    sans-serif;
  color: var(--ink);
  background:
    linear-gradient(135deg, rgba(43, 111, 140, 0.12), transparent 34%),
    linear-gradient(315deg, rgba(205, 84, 64, 0.11), transparent 36%),
    var(--paper);
}

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

.shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0;
}

.masthead {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 430px);
  gap: 32px;
  align-items: end;
  margin-bottom: 34px;
}

.eyebrow {
  margin: 0 0 12px;
  color: #2b6f8c;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 5.1rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.intro {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.75;
}

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

.game-card {
  display: flex;
  min-height: 260px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 26px;
  overflow: hidden;
  border: 1px solid rgba(23, 32, 38, 0.1);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 12px 28px rgba(39, 49, 58, 0.08);
  padding: 28px 18px;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.coin {
  --accent: #c99a2e;
}

.shake {
  --accent: #d9493c;
}

.slot {
  --accent: #2b6f8c;
}

.match {
  --accent: #5f9f49;
}

.game-card:hover,
.game-card:focus-visible {
  border-color: rgba(23, 32, 38, 0.32);
  box-shadow: var(--shadow);
  transform: translateY(-5px);
}

.game-card:focus-visible {
  outline: 3px solid rgba(43, 111, 140, 0.32);
  outline-offset: 4px;
}

.icon-slot {
  display: grid;
  width: min(132px, 68%);
  aspect-ratio: 1;
  place-items: center;
  border: 1px dashed rgba(23, 32, 38, 0.2);
  border-radius: 8px;
  background: rgba(247, 245, 239, 0.72);
  color: var(--accent);
  font-size: 2rem;
  font-weight: 900;
  line-height: 1;
}

.icon-slot img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.game-info {
  display: grid;
  gap: 8px;
  width: 100%;
  text-align: center;
}

.game-title {
  font-size: 1.45rem;
  font-weight: 850;
  line-height: 1.2;
}

.game-path {
  overflow: hidden;
  color: rgba(23, 32, 38, 0.62);
  font-family:
    "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.75rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (max-width: 980px) {
  .masthead {
    grid-template-columns: 1fr;
    gap: 18px;
  }

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

@media (max-width: 620px) {
  .shell {
    width: min(100% - 24px, 1120px);
    padding: 32px 0;
  }

  .game-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .game-card {
    min-height: 176px;
    gap: 16px;
    padding: 18px 10px;
  }

  .icon-slot {
    width: min(82px, 72%);
    font-size: 1.45rem;
  }

  .game-title {
    font-size: 1rem;
  }

  .game-path {
    font-size: 0.66rem;
  }
}