:root {
  --paper: #f4ecdd;
  --paper-2: #eadfcb;
  --card: #fffdf8;
  --ink: #22333b;
  --ink-2: #4d5f63;
  --ink-3: #6f7d7e;
  --seal: #a63a2f;
  --seal-deep: #8b2e25;
  --gold: #94662f;
  --jade: #4c6759;
  --line: rgba(34, 51, 59, 0.12);
  --line-gold: rgba(169, 124, 69, 0.3);
  --sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", serif;
  --ease: cubic-bezier(0.32, 0.72, 0.3, 1);
  color-scheme: only light;
}

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

html,
body {
  min-height: 100%;
  color-scheme: only light;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  background:
    radial-gradient(1000px 700px at 80% -10%, #fffaf0 0%, rgba(255, 250, 240, 0) 60%),
    radial-gradient(800px 560px at -10% 100%, #ecdfc7 0%, rgba(236, 223, 199, 0) 58%),
    var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

button {
  font: inherit;
  color: inherit;
}

a {
  color: inherit;
}

[hidden] {
  display: none !important;
}

.arcade-wrap {
  width: 100%;
  max-width: 980px;
  min-height: 100dvh;
  margin: 0 auto;
  padding: clamp(14px, 2.6vw, 30px) clamp(12px, 3vw, 28px) 34px;
}

/* ---------------- 顶部 ---------------- */
.arcade-head {
  display: flex;
  align-items: center;
  gap: clamp(12px, 3vw, 26px);
  margin-bottom: clamp(18px, 4vw, 36px);
}

.back {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(148, 102, 47, 0.35);
  padding-bottom: 2px;
}

.back:hover {
  color: var(--seal);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
}

.seal {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  border-radius: 8px;
  background: var(--seal);
  color: #fbf3e2;
  font-family: var(--serif);
  font-size: 26px;
  line-height: 1;
  box-shadow: inset 0 0 0 1px rgba(255, 248, 232, 0.35), 0 8px 18px -10px rgba(139, 46, 37, 0.8);
  transform: rotate(-2deg);
}

.brand h1 {
  margin: 0 0 2px;
  font-family: var(--serif);
  font-size: clamp(23px, 3.6vw, 32px);
  font-weight: 600;
  letter-spacing: 0.14em;
  line-height: 1.1;
}

.brand p {
  margin: 0;
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.head-note {
  margin-left: auto;
  font-size: 9px;
  letter-spacing: 0.16em;
  color: var(--ink-3);
  white-space: nowrap;
}

/* ---------------- 大厅 ---------------- */
.intro {
  max-width: 620px;
  margin: 0 0 18px;
  padding-left: 12px;
  border-left: 2px solid var(--line-gold);
  font-size: 13px;
  line-height: 1.9;
  color: var(--ink-2);
}

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 13px;
  max-width: 760px;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-height: 164px;
  padding: 18px 18px 16px;
  border: 1px solid var(--line-gold);
  border-radius: 15px;
  background: linear-gradient(155deg, rgba(255, 253, 248, 0.96), rgba(251, 245, 231, 0.88));
  text-align: left;
  cursor: pointer;
  overflow: hidden;
  box-shadow: 0 14px 30px -26px rgba(34, 51, 59, 0.5);
  transition: transform 0.22s var(--ease), border-color 0.22s, box-shadow 0.22s;
}

.card::after {
  content: "";
  position: absolute;
  right: -18px;
  bottom: -24px;
  width: 100px;
  height: 100px;
  border: 1px solid rgba(169, 124, 69, 0.13);
  border-radius: 50%;
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--gold);
  box-shadow: 0 22px 34px -26px rgba(34, 51, 59, 0.55);
}

.card-seal {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 10px;
  border: 1px solid var(--line-gold);
  border-radius: 50%;
  font-family: var(--serif);
  font-size: 17px;
  color: var(--seal);
  background: rgba(255, 255, 255, 0.7);
}

.card-kicker {
  font-size: 9px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.card strong {
  margin: 2px 0 2px;
  font-family: var(--serif);
  font-size: 27px;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.card small {
  max-width: 90%;
  font-size: 11px;
  line-height: 1.6;
  color: var(--ink-3);
}

.card em {
  position: absolute;
  right: 16px;
  bottom: 14px;
  font-style: normal;
  font-size: 10px;
  color: var(--ink-3);
}

.card em b {
  color: var(--seal);
  font-weight: 600;
}

.tip {
  margin: 18px 0 0;
  font-size: 10.5px;
  line-height: 1.8;
  color: var(--ink-3);
}

/* ---------------- 游戏视图 ---------------- */
.view-head {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.ghost {
  height: 32px;
  padding: 0 11px;
  border: 1px solid var(--line-gold);
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.75);
  font-size: 11px;
  color: var(--ink-2);
  cursor: pointer;
  white-space: nowrap;
}

.ghost:hover {
  border-color: var(--gold);
  color: var(--seal);
}

.view-title {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 150px;
  flex: 1;
}

.view-title strong {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.view-title small {
  font-size: 10.5px;
  color: var(--ink-3);
}

.view-stats {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  color: var(--ink-3);
  white-space: nowrap;
}

.view-stats b {
  color: var(--seal);
  font-size: 14px;
  font-weight: 600;
}

.stage {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 360px;
  padding: 12px 0 26px;
  position: relative;
}

/* ---------------- 通用画布 ---------------- */
.canvas-wrap {
  position: relative;
  width: min(92vw, 430px);
  margin: 0 auto;
}

.canvas-wrap canvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
  box-shadow: 0 24px 50px -34px rgba(34, 51, 59, 0.7);
  touch-action: none;
  background: #16283a;
}

.stage .canvas-wrap.narrow {
  width: min(88vw, 380px);
}

/* ---------------- 2048 ---------------- */
.g2048 {
  position: relative;
  width: min(92vw, 430px);
  aspect-ratio: 1;
  padding: 9px;
  border-radius: 14px;
  background: #2d4045;
  box-shadow: 0 26px 54px -34px rgba(34, 51, 59, 0.8);
  touch-action: none;
}

.grid2048 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 7px;
  width: 100%;
  height: 100%;
}

.tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 0;
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.075);
  font-family: var(--serif);
  font-size: clamp(17px, 5.3vw, 27px);
  line-height: 1;
  color: #4c3828;
  transition: background 0.12s, color 0.12s, transform 0.12s;
  user-select: none;
}

.tile small {
  margin-top: 2px;
  font-family: var(--sans);
  font-size: 8px;
  letter-spacing: 0.08em;
  opacity: 0.7;
}

.tile.v2 {
  background: #f3e7d0;
}
.tile.v4 {
  background: #eed9b3;
}
.tile.v8 {
  background: #e4c188;
}
.tile.v16 {
  background: #d8a45d;
}
.tile.v32 {
  background: #c98744;
  color: #fff8ea;
}
.tile.v64 {
  background: #b96b36;
  color: #fff8ea;
}
.tile.v128 {
  background: #a95830;
  color: #fff8ea;
}
.tile.v256 {
  background: #8e462b;
  color: #fff8ea;
}
.tile.v512 {
  background: #773a28;
  color: #fff8ea;
}
.tile.v1024 {
  background: #5f2d25;
  color: #fff8ea;
}
.tile.v2048 {
  background: var(--seal);
  color: #fff8ea;
}

/* ---------------- 扫雷 ---------------- */
.mine-wrap {
  position: relative;
  width: min(92vw, 420px);
  margin: 0 auto;
}

.mine-status {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.04em;
}

.mine-status b {
  color: var(--seal);
  font-weight: 600;
}

.mine-grid {
  display: grid;
  grid-template-columns: repeat(9, minmax(0, 1fr));
  gap: 3px;
  padding: 7px;
  border-radius: 10px;
  background: #57432f;
  box-shadow: 0 24px 50px -34px rgba(34, 51, 59, 0.7);
  touch-action: manipulation;
}

.mcell {
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 3px;
  background: #c9a36a;
  color: #3f2e1e;
  font-size: clamp(11px, 2.9vw, 15px);
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  box-shadow: inset 0 -2px 0 rgba(80, 53, 29, 0.22);
}

.mcell.revealed {
  background: #f0e3c8;
  cursor: default;
  box-shadow: inset 0 0 0 1px rgba(120, 94, 58, 0.16);
}

.mcell.flagged {
  background: var(--seal);
  color: #fff4df;
  font-family: var(--serif);
  font-size: clamp(9px, 2.4vw, 12px);
}

.mcell.mine {
  background: #4b3526;
  color: #e8d3aa;
}

.mcell.n1 {
  color: #4f6b9a;
}
.mcell.n2 {
  color: #4c6759;
}
.mcell.n3 {
  color: #a63a2f;
}
.mcell.n4 {
  color: #6a4f8a;
}
.mcell.n5 {
  color: #8a4a2f;
}
.mcell.n6 {
  color: #3f6f73;
}
.mcell.n7 {
  color: #5e4b39;
}
.mcell.n8 {
  color: #7a3345;
}

/* ---------------- 遮罩 ---------------- */
.overlay {
  position: absolute;
  inset: 0;
  z-index: 9;
  display: grid;
  place-items: center;
  padding: 16px;
  border-radius: inherit;
  background: rgba(20, 31, 36, 0.6);
  backdrop-filter: blur(3px);
  animation: fade 0.22s ease both;
}

.overlay .panel {
  width: min(280px, 100%);
  padding: 22px 20px 18px;
  border: 1px solid var(--line-gold);
  border-radius: 14px;
  background: var(--card);
  text-align: center;
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.6);
}

.overlay strong {
  display: block;
  margin-bottom: 7px;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.overlay p {
  margin: 0 0 16px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-3);
}

.overlay .btn {
  height: 40px;
  padding: 0 22px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(150deg, #b5463a, var(--seal-deep));
  color: #fff8ec;
  font-size: 12.5px;
  cursor: pointer;
  box-shadow: 0 10px 20px -10px rgba(166, 58, 47, 0.8);
}

.overlay .btn:hover {
  transform: translateY(-1px);
}

.overlay .btn.ghost-btn {
  margin-left: 8px;
  background: transparent;
  border: 1px solid var(--line-gold);
  color: var(--ink-2);
  box-shadow: none;
}

@keyframes fade {
  from {
    opacity: 0;
  }
}

/* ---------------- 页脚 ---------------- */
footer {
  margin-top: 30px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  text-align: center;
}

/* ---------------- 手机 ---------------- */
@media (max-width: 640px) {
  .arcade-wrap {
    padding: 14px 12px 26px;
  }

  .arcade-head {
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
  }

  .head-note {
    display: none;
  }

  .seal {
    width: 38px;
    height: 38px;
    font-size: 22px;
  }

  .brand h1 {
    font-size: 24px;
  }

  .brand p {
    font-size: 9px;
  }

  .back {
    font-size: 11px;
  }

  .intro {
    font-size: 12px;
    margin-bottom: 14px;
  }

  .cards {
    gap: 9px;
  }

  .card {
    min-height: 150px;
    padding: 14px 13px 13px;
  }

  .card-seal {
    width: 29px;
    height: 29px;
    margin-bottom: 7px;
    font-size: 15px;
  }

  .card strong {
    font-size: 23px;
  }

  .card small {
    font-size: 10px;
    max-width: 96%;
  }

  .card em {
    right: 12px;
    bottom: 10px;
    font-size: 9px;
  }

  .view-head {
    gap: 8px;
  }

  .view-title {
    order: 3;
    flex-basis: 100%;
    min-width: 0;
  }

  .view-title strong {
    font-size: 20px;
  }

  .view-stats {
    margin-left: auto;
    gap: 9px;
  }

  .stage {
    padding: 10px 0 20px;
    min-height: 320px;
  }
}

@media (max-width: 360px) {
  .card {
    min-height: 140px;
    padding: 12px 10px;
  }

  .card strong {
    font-size: 21px;
  }

  .card small {
    font-size: 9px;
  }

  .ghost {
    padding: 0 9px;
    font-size: 10px;
  }

  .view-stats {
    font-size: 10px;
    gap: 7px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}