:root {
  color-scheme:light;
  --paper:#f3eee4;
  --panel:#fffcf5;
  --ink:#373c32;
  --muted:#767769;
  --line:#d7d1c2;
  --green:#2f614f;
  --blue:#3d6976;
  --shadow:0 5px 22px #51442e0d,0 1px 2px #51442e0a;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  font-synthesis:none;
}

* {
  box-sizing:border-box;
}

html,body {
  margin:0;
  width:100%;
  height:100%;
  overflow:hidden;
  overscroll-behavior:none;
}

body {
  background:var(--paper);
  color:var(--ink);
}

button {
  font:inherit;
  color:inherit;
  cursor:pointer;
  -webkit-tap-highlight-color:transparent;
}

button:disabled {
  opacity:.32;
  cursor:default;
}

button:focus-visible,canvas:focus-visible {
  outline:3px solid #3a7b91;
  outline-offset:4px;
}

button img {
  width:32px;
  height:32px;
  object-fit:contain;
  pointer-events:none;
}

button:disabled img {
  filter:grayscale(1);
}

button:active:not(:disabled) {
  transform:translateY(1px);
}

.game {
  width:100%;
  height:100%;
  height:100dvh;
  position:relative;
  isolation:isolate;
}

#board {
  display:block;
  width:100%;
  height:100%;
  touch-action:none;
  outline-offset:-4px!important;
  cursor:grab;
}

#board.is-dragging {
  cursor:grabbing;
}

.brand {
  position:absolute;
  top:24px;
  left:50%;
  transform:translateX(-50%);
  text-align:center;
  pointer-events:none;
  white-space:nowrap;
}

.brand-en {
  font-size:10px;
  letter-spacing:2.4px;
  color:#8a8677;
}

.brand h1 {
  font-family:"Songti SC","STSong","SimSun",serif;
  font-size:23px;
  font-weight:600;
  letter-spacing:5px;
  margin:5px 0 0 5px;
}

.toolbar {
  position:absolute;
  display:flex;
  align-items:center;
  gap:4px;
  padding:7px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:15px;
  box-shadow:var(--shadow);
}

.game-tools {
  left:max(24px,env(safe-area-inset-left));
  top:max(24px,env(safe-area-inset-top));
}

.view-tools {
  right:max(24px,env(safe-area-inset-right));
  top:max(24px,env(safe-area-inset-top));
}

.tool {
  border:0;
  background:transparent;
  height:44px;
  min-width:44px;
  display:flex;
  justify-content:center;
  align-items:center;
  gap:9px;
  border-radius:9px;
  padding:6px;
  transition:background .12s;
}

.tool:hover:not(:disabled) {
  background:#eae6d9;
}

.primary {
  padding:6px 14px 6px 9px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.5px;
}

.primary img {
  width:30px;
  height:30px;
}

.separator {
  height:25px;
  width:1px;
  background:var(--line);
  margin:0 4px;
}

.mode-badge {
  position:absolute;
  left:50%;
  transform:translateX(-50%);
  top:102px;
  border:1px solid #c9d0cb;
  background:#f7f8efed;
  border-radius:30px;
  padding:8px 15px;
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  white-space:nowrap;
  pointer-events:none;
  box-shadow:0 2px 8px #343c3210;
  color:var(--blue);
}

.status-dot {
  width:6px;
  height:6px;
  border-radius:50%;
  background:currentColor;
}

.badge-separator {
  opacity:.3;
  margin:0 2px;
}

#mode-detail {
  color:#777c70;
}

.playing .mode-badge {
  color:var(--green);
}

.status-panel {
  position:absolute;
  bottom:max(22px,env(safe-area-inset-bottom));
  left:max(24px,env(safe-area-inset-left));
  min-width:175px;
}

.stats {
  display:flex;
  gap:24px;
  align-items:center;
}

.stat {
  display:flex;
  gap:9px;
  align-items:baseline;
}

.stat-value {
  font-family:Georgia,"Times New Roman",serif;
  font-size:30px;
  font-variant-numeric:tabular-nums;
  color:var(--green);
}

.stat-label {
  font-size:13px;
  color:#777767;
}

.stat-initial {
  font-size:17px;
  color:#777767;
}

.status-caption {
  font-size:12px;
  color:#858274;
  margin-top:5px;
}

.other-tools {
  right:max(24px,env(safe-area-inset-right));
  bottom:max(22px,env(safe-area-inset-bottom));
  padding:5px;
}

.other-tools .tool {
  width:42px;
  height:42px;
}

.other-tools img {
  width:29px;
  height:29px;
}

.board-help {
  position:absolute;
  bottom:24px;
  left:50%;
  transform:translateX(-50%);
  font-size:13px;
  line-height:1.8;
  text-align:center;
  margin:0;
  color:#5d655c;
  pointer-events:none;
  white-space:nowrap;
}

.gesture-help {
  display:block;
  font-size:12px;
  color:#8c8a7e;
}

.view-scale {
  position:absolute;
  top:90px;
  right:33px;
  font-size:11px;
  letter-spacing:.8px;
  color:#898578;
  pointer-events:none;
}

.toast {
  position:absolute;
  left:50%;
  bottom:112px;
  transform:translateX(-50%);
  max-width:calc(100% - 32px);
  width:max-content;
  background:#374b41;
  color:#fffdf5;
  padding:11px 19px;
  border-radius:10px;
  font-size:14px;
  box-shadow:var(--shadow);
  pointer-events:none;
  text-align:center;
}

.toast[hidden] {
  display:none;
}

.modal {
  border:1px solid #ddd6c7;
  border-radius:22px;
  padding:32px;
  background:#fffcf5;
  color:var(--ink);
  box-shadow:0 24px 100px #242c333b;
  max-width:calc(100vw - 32px);
  width:450px;
  max-height:calc(100vh - 48px);
  max-height:calc(100dvh - 48px);
  overflow:auto;
  overscroll-behavior:contain;
}

.modal::backdrop {
  background:#293b394f;
  backdrop-filter:blur(5px);
}

.eyebrow {
  font-size:12px;
  letter-spacing:1px;
  color:var(--blue);
}

.modal h2 {
  margin:13px 0 15px;
  font-size:26px;
  letter-spacing:1px;
  font-family:"Songti SC","STSong","SimSun",serif;
}

.modal p,.modal li {
  font-size:15px;
  line-height:1.85;
  color:#62665c;
}

.dialog-actions {
  display:flex;
  justify-content:flex-end;
  gap:10px;
  margin-top:28px;
}

.dialog-actions button {
  border-radius:9px;
  padding:10px 22px;
  border:1px solid var(--line);
  font-size:14px;
  min-height:44px;
}

.text-button {
  background:transparent;
}

.solid-button {
  background:var(--green);
  color:#fff;
  border-color:var(--green)!important;
}

.info-modal {
  width:570px;
  padding:34px 38px;
}

.info-modal a {
  color:var(--green);
  text-underline-offset:3px;
}

.info-modal a:focus-visible {
  outline:3px solid var(--blue);
  outline-offset:4px;
  border-radius:2px;
}

.close-button {
  position:absolute;
  right:15px;
  top:12px;
  border:0;
  background:transparent;
  font-size:30px;
  line-height:1;
  width:44px;
  height:44px;
  color:#7c7f73;
  border-radius:8px;
}

.close-button:hover {
  background:#eeeadf;
}

.info-modal h2 {
  font-size:34px;
  margin:15px 0 0;
}

.info-subtitle {
  font-family:Georgia,serif;
  letter-spacing:.7px;
  color:#89877a!important;
  margin:5px 0 27px;
}

.info-modal section {
  border-top:1px solid #e3ddce;
  padding-top:18px;
  margin-top:22px;
}

.info-modal h3 {
  font-size:16px;
  margin:0;
}

.info-modal ul {
  padding-left:20px;
}

.info-modal li {
  margin:7px 0;
}

.credits {
  margin-top:28px;
  padding-top:20px;
  border-top:1px solid #e3ddce;
}

.credits p {
  font-size:13px;
  line-height:1.8;
  margin:6px 0;
}

.sound-credits {
  list-style:none;
  padding:0!important;
  margin:4px 0 14px;
}

.sound-credits li {
  font-size:11px;
  overflow-wrap:anywhere;
  line-height:1.5;
  margin:2px 0;
  font-family:monospace;
  color:#86887a;
}

.privacy-note {
  color:#858779!important;
}

.sr-only {
  position:absolute!important;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;
  border:0;
}

.noscript {
  position:absolute;
  inset:35% 10%;
  padding:30px;
  background:var(--panel);
  text-align:center;
}

@media(max-width:900px) {
  .brand {
    top:27px;
  }
  .brand-en {
    font-size:9px;
    letter-spacing:1px;
  }
  .brand h1 {
    font-size:20px;
  }
  .board-help {
    bottom:94px;
    font-size:12px;
    background:#f3eee4e8;
    border-radius:8px;
    padding:4px 10px;
  }
  .gesture-help {
    display:none;
  }
  .toast {
    bottom:145px;
  }
  .mode-badge {
    top:105px;
  }
}

@media(max-width:640px) {
  .brand {
    display:none;
  }
  .game-tools {
    left:max(12px,env(safe-area-inset-left));
    top:calc(12px + env(safe-area-inset-top));
  }
  .view-tools {
    right:max(12px,env(safe-area-inset-right));
    top:calc(12px + env(safe-area-inset-top));
  }
  .toolbar {
    padding:4px;
    gap:1px;
    border-radius:12px;
  }
  .tool {
    height:42px;
    min-width:38px;
    padding:5px;
  }
  .tool img {
    width:29px;
    height:29px;
  }
  .primary {
    gap:3px;
    padding:5px 7px 5px 4px;
    font-size:13px;
  }
  .primary img {
    width:26px;
    height:26px;
  }
  .separator {
    margin:0 2px;
    height:23px;
  }
  .mode-badge {
    top:calc(80px + env(safe-area-inset-top));
    padding:6px 11px;
    font-size:11px;
    gap:6px;
  }
  .view-scale {
    top:calc(71px + env(safe-area-inset-top));
    right:18px;
    font-size:10px;
  }
  .status-panel {
    left:max(16px,env(safe-area-inset-left));
    bottom:calc(18px + env(safe-area-inset-bottom));
    min-width:0;
  }
  .stats {
    gap:19px;
  }
  .stat {
    gap:6px;
  }
  .stat-value {
    font-size:27px;
  }
  .stat-label {
    font-size:12px;
  }
  .status-caption {
    font-size:11px;
    margin-top:4px;
  }
  .other-tools {
    right:max(12px,env(safe-area-inset-right));
    bottom:calc(20px + env(safe-area-inset-bottom));
  }
  .other-tools .tool {
    min-width:36px;
    width:36px;
    height:38px;
  }
  .other-tools img {
    width:27px;
    height:27px;
  }
  .board-help {
    bottom:calc(70px + env(safe-area-inset-bottom));
    font-size:12px;
    max-width:calc(100% - 24px);
    white-space:normal;
    width:max-content;
  }
  .toast {
    bottom:calc(130px + env(safe-area-inset-bottom));
    font-size:13px;
  }
  .info-modal {
    padding:30px 24px;
  }
  .modal {
    border-radius:17px;
  }
  .info-modal .eyebrow {
    font-size:11px;
  }
  .info-modal p,.info-modal li {
    font-size:14px;
  }
  .info-modal .sound-credits li {
    font-size:11px;
  }
}

@media(max-width:359px) {
  .primary span {
    display:none;
  }
  .primary {
    width:38px;
    padding:5px;
  }
  .stats {
    gap:12px;
  }
  .stat-value {
    font-size:25px;
  }
  .status-caption {
    max-width:205px;
  }
  .mode-badge {
    top:78px;
  }
  .view-scale {
    top:69px;
  }
}

@media(max-height:480px) and (min-width:641px) {
  .brand {
    display:none;
  }
  .game-tools,.view-tools {
    top:10px;
  }
  .mode-badge {
    top:15px;
  }
  .status-panel,.other-tools {
    bottom:10px;
  }
  .board-help {
    bottom:12px;
  }
  .view-scale {
    top:75px;
  }
}

button {
  touch-action:manipulation;
}

.edge-softness {
  position:absolute;
  left:var(--board-left);
  top:var(--board-top);
  width:var(--board-width);
  height:var(--board-height);
  pointer-events:none;
  overflow:hidden;
}

.edge-softness i {
  position:absolute;
  display:block;
  -webkit-backdrop-filter:blur(1px);
  backdrop-filter:blur(1px);
}

.edge-left,.edge-right {
  top:0;
  bottom:0;
  width:32px;
}

.edge-top,.edge-bottom {
  left:0;
  right:0;
  height:32px;
}

.edge-left {
  left:0;
  -webkit-mask-image:linear-gradient(to right,#000,transparent);
  mask-image:linear-gradient(to right,#000,transparent);
}

.edge-right {
  right:0;
  -webkit-mask-image:linear-gradient(to left,#000,transparent);
  mask-image:linear-gradient(to left,#000,transparent);
}

.edge-top {
  top:0;
  -webkit-mask-image:linear-gradient(to bottom,#000,transparent);
  mask-image:linear-gradient(to bottom,#000,transparent);
}

.edge-bottom {
  bottom:0;
  -webkit-mask-image:linear-gradient(to top,#000,transparent);
  mask-image:linear-gradient(to top,#000,transparent);
}

@media(max-width:800px) {
  .brand {
    display:none;
  }
}

@media(prefers-reduced-motion:reduce) {
  * {
    transition:none!important;
  }
}