.difficulty-guide-page {
  overflow-x: clip;
}

.difficulty-guide {
  max-width: 1040px;
}

.difficulty-quick-answer {
  border-color: #cbd9f4;
  border-left-color: #5b5bd6;
  background: linear-gradient(135deg, #f2f6ff, #f7f3ff);
}

.difficulty-metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 15px;
  margin: 22px 0 30px;
}

.difficulty-metric-grid article {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.difficulty-metric-grid article > span {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(135deg, #2d80ca, #7952c8);
  font-weight: 900;
}

.difficulty-metric-grid h3 {
  margin: 12px 0 7px;
  font-size: 1.05rem;
}

.difficulty-metric-grid p {
  margin: 0;
  color: var(--muted);
  font-size: .91rem;
}

.difficulty-level-figure {
  overflow: hidden;
  margin: 20px 0 25px;
  border: 1px solid #cbd8e9;
  border-radius: 20px;
  background: #f7fbff;
  box-shadow: var(--shadow-sm);
}

.difficulty-level-figure figcaption {
  margin: 0;
  padding: 13px 18px 15px;
  border-top: 1px solid #dbe4f1;
  color: #4d5f78;
  background: #fff;
  font-size: .9rem;
  text-align: center;
}

.difficulty-board {
  min-height: 230px;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: center;
  gap: 13px;
  padding: 30px 22px 24px;
  background: radial-gradient(circle at 50% 0, rgba(255,255,255,.94), transparent 48%), linear-gradient(145deg, #eaf7ff, #f1edff);
}

.difficulty-board.is-ball {
  background: radial-gradient(circle at 50% 0, rgba(255,255,255,.92), transparent 48%), linear-gradient(145deg, #f3efff, #edf7ff);
}

.difficulty-board.is-stack {
  align-items: flex-end;
  background: radial-gradient(circle at 50% 0, rgba(255,255,255,.92), transparent 48%), linear-gradient(145deg, #fff5e6, #f4efff);
}

.difficulty-container {
  width: 48px;
  display: grid;
  justify-items: center;
  gap: 7px;
  color: #40536d;
  font-size: .74rem;
}

.difficulty-pieces {
  width: 48px;
  height: var(--container-height);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 6px;
  border: 3px solid rgba(60, 102, 139, .58);
  border-top-color: rgba(60, 102, 139, .28);
  border-radius: 8px 8px 18px 18px;
  background: rgba(255,255,255,.48);
  box-sizing: border-box;
}

.difficulty-container.is-stack .difficulty-pieces {
  width: 44px;
  height: var(--container-height);
  gap: 2px;
  padding: 4px;
  border: 0;
  border-radius: 10px;
  background: rgba(255,255,255,.68);
  box-shadow: inset 0 0 0 1px rgba(101,79,136,.2);
}

.difficulty-piece {
  flex: 0 0 27px;
  display: grid;
  place-items: center;
  border-radius: 3px;
  background: var(--piece-color);
  color: #fff;
  font-style: normal;
  font-weight: 900;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.3);
}

.difficulty-container.is-ball .difficulty-piece {
  flex-basis: 27px;
  width: 27px;
  align-self: center;
  border-radius: 50%;
  box-shadow: inset 0 3px 5px rgba(255,255,255,.42), 0 1px 2px rgba(45,55,79,.18);
}

.difficulty-container.is-stack .difficulty-piece {
  flex-basis: 25px;
  border-radius: 5px;
}

.difficulty-piece.is-hidden {
  background: #26364e;
}

.difficulty-piece.is-wild {
  background: linear-gradient(135deg, #ef5c6d, #f2ad3d 35%, #35a96e 66%, #4f72da);
}

.difficulty-hand {
  display: grid;
  justify-items: center;
  gap: 7px;
  margin-left: 8px;
  color: #6b4c80;
  font-size: .72rem;
  font-weight: 850;
}

.difficulty-hand i {
  width: 35px;
  height: 35px;
  border: 3px solid #fff;
  border-radius: 8px;
  background: var(--piece-color);
  box-shadow: 0 4px 12px rgba(67,52,91,.18);
}

.difficulty-data-table th small {
  display: block;
  margin-top: 4px;
  color: #6b7280;
  font-size: .72rem;
  font-weight: 750;
}

.difficulty-data-table td {
  text-align: center;
}

.difficulty-snapshot-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 20px 0 24px;
}

.difficulty-snapshot-grid .difficulty-level-figure {
  min-width: 0;
  margin: 0;
}

.difficulty-snapshot-grid .difficulty-board {
  min-height: 245px;
  gap: 9px;
  padding-inline: 13px;
}

.difficulty-reading-steps {
  counter-reset: difficulty-step;
  margin: 20px 0 24px;
  padding: 0;
  list-style: none;
}

.difficulty-reading-steps li {
  position: relative;
  margin: 0 0 13px;
  padding: 16px 18px 16px 58px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}

.difficulty-reading-steps li::before {
  counter-increment: difficulty-step;
  content: counter(difficulty-step);
  position: absolute;
  left: 16px;
  top: 14px;
  width: 29px;
  height: 29px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: #5c58c7;
  font-size: .78rem;
  font-weight: 900;
}

.difficulty-data-source {
  padding: 16px 18px;
  border-left: 5px solid #2f8a67;
  border-radius: 12px;
  color: #36534a;
  background: #edf9f3;
}

@media (max-width: 820px) {
  .difficulty-metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .difficulty-snapshot-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .difficulty-metric-grid {
    grid-template-columns: 1fr;
  }
  .difficulty-board {
    min-height: 210px;
    gap: 8px;
    padding: 24px 10px 20px;
  }
  .difficulty-container,
  .difficulty-pieces {
    width: 39px;
  }
  .difficulty-container.is-stack {
    width: 35px;
  }
  .difficulty-container.is-stack .difficulty-pieces {
    width: 35px;
  }
  .difficulty-piece {
    flex-basis: 25px;
  }
  .difficulty-container.is-ball .difficulty-piece {
    width: 24px;
    flex-basis: 24px;
  }
  .difficulty-snapshot-grid .difficulty-board {
    gap: 6px;
    padding-inline: 8px;
  }
}