:root {
  --bg: #f4f7f2;
  --panel: #ffffff;
  --ink: #172033;
  --muted: #667085;
  --line: #d9e4d2;
  --accent: #166534;
  --accent-dark: #14532d;
  --gold: #d99a1b;
  --red: #dc2626;
  --blue: #1d4ed8;
  --shadow: 0 16px 42px rgba(23, 32, 51, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
}

body {
  margin: 0;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.5;
  letter-spacing: 0;
}

a {
  color: inherit;
}

button {
  font: inherit;
}

.site-header {
  height: 54px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 0 24px;
  background: #172033;
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 80;
}

.brand {
  font-size: 20px;
  font-weight: 900;
  text-decoration: none;
  white-space: nowrap;
}

.desktop-nav {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 6px;
}

.desktop-nav a {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  border-radius: 6px;
  color: rgba(255, 255, 255, 0.84);
  font-weight: 800;
  text-decoration: none;
}

.desktop-nav a:hover,
.desktop-nav a:focus-visible {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  outline: none;
}

.header-download,
.mobile-menu {
  display: none;
}

main {
  padding: 14px 12px 0;
}

.game-shell {
  width: min(900px, 100%);
  margin: 0 auto;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.game-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  margin-bottom: 8px;
}

.game-head h1 {
  margin: 0 0 4px;
  font-size: 28px;
  line-height: 1.15;
}

.game-head p {
  margin: 0;
  color: var(--muted);
  font-weight: 800;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.actions button,
.actions a,
.level-btn,
.dir-btn {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  cursor: pointer;
  font-weight: 900;
  text-decoration: none;
}

.actions button,
.actions a,
.level-btn {
  padding: 0 11px;
}

.actions button:first-child,
.level-btn.active {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}

.download-strip {
  min-height: 36px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  padding: 5px 8px;
  border: 1px solid #f1d39b;
  border-radius: 7px;
  background: #fff7e6;
  color: #68430d;
}

.download-strip span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 13px;
  font-weight: 900;
  white-space: nowrap;
}

.download-strip a {
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  border-radius: 6px;
  background: var(--gold);
  color: #fff;
  font-size: 13px;
  font-weight: 900;
  text-decoration: none;
  white-space: nowrap;
}

.play-layout {
  display: grid;
  grid-template-columns: minmax(280px, 520px) 220px;
  justify-content: center;
  gap: 12px;
  align-items: start;
}

.board-wrap {
  position: relative;
  display: grid;
  place-items: center;
  padding: 8px;
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(22, 101, 52, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(22, 101, 52, 0.08) 1px, transparent 1px), #eef7e8;
  background-size: 18px 18px;
  overflow: hidden;
}

#gameCanvas {
  width: min(520px, 100%);
  aspect-ratio: 1;
  display: block;
  border-radius: 8px;
  background: #173b28;
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.12);
  touch-action: none;
}

.board-badge {
  position: absolute;
  left: 14px;
  top: 14px;
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  border-radius: 6px;
  background: rgba(23, 32, 51, 0.82);
  color: #fff;
  font-size: 13px;
  font-weight: 900;
  pointer-events: none;
}

.side-panel {
  display: grid;
  gap: 8px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.stat-card {
  min-height: 56px;
  display: grid;
  align-content: center;
  gap: 3px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
}

.stat-card span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
}

.stat-card strong {
  font-size: 20px;
  line-height: 1.1;
}

.level-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
}

.level-btn {
  min-width: 0;
}

.pad {
  display: grid;
  grid-template-columns: repeat(3, 52px);
  grid-template-rows: repeat(3, 40px);
  justify-content: center;
  gap: 6px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
}

.dir-btn {
  padding: 0;
  background: #172033;
  color: #fff;
  border-color: #172033;
  font-size: 20px;
  line-height: 1;
}

.dir-up {
  grid-column: 2;
}

.dir-left {
  grid-column: 1;
  grid-row: 2;
}

.dir-right {
  grid-column: 3;
  grid-row: 2;
}

.dir-down {
  grid-column: 2;
  grid-row: 3;
}

.mini-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.mini-links a {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--accent-dark);
  font-weight: 900;
  text-decoration: none;
}

.content-page {
  width: min(900px, 100%);
  margin: 0 auto;
  padding: 14px 12px 0;
}

.content-panel {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.content-panel h1 {
  margin: 0 0 14px;
  font-size: 28px;
  line-height: 1.2;
}

.content-panel p,
.content-panel li {
  color: var(--muted);
  font-weight: 700;
}

.content-panel a {
  color: var(--accent-dark);
  font-weight: 900;
}

.game-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.game-card {
  min-height: 56px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
  color: var(--ink);
  text-decoration: none;
}

.game-card:hover,
.game-card:focus-visible {
  border-color: var(--accent);
  outline: none;
}

.game-card-icon {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 7px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 900;
}

.game-card strong {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-footer {
  margin-top: 18px;
  padding: 16px 12px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  text-align: center;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--accent-dark);
  font-weight: 900;
  text-decoration: none;
}

@media (max-width: 820px) {
  .game-head,
  .play-layout {
    grid-template-columns: 1fr;
  }

  .side-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .site-header {
    height: 48px;
    grid-template-columns: minmax(0, 1fr) auto 40px;
    gap: 6px;
    padding: 0 8px;
  }

  .brand {
    font-size: 17px;
  }

  .desktop-nav {
    display: none;
  }

  .header-download {
    min-height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 10px;
    border-radius: 6px;
    background: #fff7e6;
    color: #68430d;
    border: 1px solid #e5c16b;
    font-size: 13px;
    font-weight: 900;
    text-decoration: none;
    white-space: nowrap;
  }

  .mobile-menu {
    display: block;
    position: relative;
  }

  .mobile-menu summary {
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    gap: 4px;
    padding: 10px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.1);
    cursor: pointer;
    list-style: none;
  }

  .mobile-menu summary::-webkit-details-marker {
    display: none;
  }

  .mobile-menu span {
    width: 18px;
    height: 2px;
    display: block;
    border-radius: 2px;
    background: #fff;
  }

  .mobile-menu nav {
    position: fixed;
    top: 48px;
    right: 8px;
    z-index: 90;
    width: min(220px, calc(100vw - 16px));
    display: grid;
    gap: 4px;
    padding: 10px;
    border-radius: 8px;
    background: #172033;
    box-shadow: var(--shadow);
  }

  .mobile-menu:not([open]) nav {
    display: none;
  }

  .mobile-menu nav a {
    min-height: 42px;
    display: flex;
    align-items: center;
    padding: 0 12px;
    border-radius: 6px;
    color: #fff;
    font-weight: 800;
    text-decoration: none;
  }

  main {
    padding: 8px 8px 0;
  }

  .content-page {
    padding: 8px 8px 0;
  }

  .game-shell {
    padding: 8px;
  }

  .game-head {
    gap: 8px;
    margin-bottom: 8px;
  }

  .game-head h1 {
    font-size: 22px;
  }

  .game-head p {
    min-height: 22px;
    font-size: 13px;
    line-height: 1.4;
  }

  .actions {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
  }

  .actions button,
  .actions a,
  .level-btn {
    min-height: 34px;
    padding: 0 8px;
    font-size: 13px;
  }

  .download-strip {
    min-height: 34px;
    gap: 6px;
    margin-bottom: 8px;
    padding: 5px 6px;
  }

  .download-strip span,
  .download-strip a {
    font-size: 12px;
  }

  .download-strip a {
    min-height: 28px;
    padding: 0 9px;
  }

  .board-wrap {
    padding: 6px;
    border-radius: 7px;
  }

  #gameCanvas {
    width: 100%;
  }

  .board-badge {
    left: 10px;
    top: 10px;
    min-height: 26px;
    font-size: 12px;
  }

  .stats-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 6px;
  }

  .stat-card {
    min-height: 48px;
    padding: 7px;
    border-radius: 7px;
  }

  .stat-card span {
    font-size: 11px;
  }

  .stat-card strong {
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 16px;
    white-space: nowrap;
  }

  .level-row {
    gap: 6px;
  }

  .pad {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-template-rows: repeat(3, 38px);
    gap: 5px;
    padding: 6px;
  }

  .mini-links {
    display: none;
  }

  .content-panel {
    padding: 14px;
  }

  .content-panel h1 {
    font-size: 24px;
  }

  .game-card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }

  .game-card {
    min-height: 52px;
    padding: 8px;
  }

  .game-card strong {
    font-size: 15px;
  }

  .site-footer {
    margin-top: 18px;
    padding: 16px 10px;
    font-size: 13px;
  }
}