:root {
  --bg-ink: #f7f3e8;
  --bg-paper: #f1e7d1;
  --ink: #1d1a14;
  --ink-soft: #5f5242;
  --brand: #b2461f;
  --brand-deep: #7f2a0f;
  --line: #ceb99a;
  --tile: #fffaf0;
  --tile-edge: #6d5a3d;
  --tile-fall: #f0c989;
  --tile-selected: #d65f24;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  color: var(--ink);
  font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  background: radial-gradient(1200px 700px at 15% 10%, #fff8e7, transparent),
    radial-gradient(900px 600px at 100% 0%, #fddaa9, transparent),
    linear-gradient(155deg, var(--bg-paper) 0%, var(--bg-ink) 70%);
}

.ambient {
  position: fixed;
  pointer-events: none;
  z-index: 0;
  opacity: 0.22;
  filter: blur(1px);
}

.ambient-a {
  width: 320px;
  height: 320px;
  top: -60px;
  left: -40px;
  background: conic-gradient(from 30deg, #e2ac64, #f6d59f, #d38f4a, #e2ac64);
  border-radius: 50%;
}

.ambient-b {
  width: 260px;
  height: 260px;
  bottom: -40px;
  right: -20px;
  background: repeating-linear-gradient(45deg, #c98641 0, #c98641 12px, #dca86b 12px, #dca86b 24px);
  border-radius: 30% 70% 64% 36% / 40% 31% 69% 60%;
}

.layout {
  position: relative;
  z-index: 1;
  width: min(1100px, 96vw);
  margin: 20px auto;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 16px;
}

.panel {
  border: 2px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(255, 253, 244, 0.88), rgba(246, 238, 222, 0.92));
  box-shadow: 0 14px 40px rgba(80, 48, 18, 0.18);
}

.panel-main {
  padding: 18px;
}

.panel-side {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.title-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}

h1 {
  margin: 0;
  font-family: "ZCOOL XiaoWei", serif;
  font-size: 42px;
  line-height: 1;
  letter-spacing: 2px;
}

.subtitle {
  margin: 4px 0 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn {
  border: 1px solid #8d7656;
  background: #fff7e7;
  color: #2f261a;
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 14px;
  transition: transform 120ms ease, background 120ms ease;
}

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

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  border-color: var(--brand-deep);
  background: linear-gradient(180deg, #da6f32 0%, #b2461f 100%);
  color: #fff9ed;
}

.btn.block {
  width: 100%;
}

.board-wrap {
  --board-cols: 8;
  --board-rows: 10;
  position: relative;
  margin: 0 auto;
  width: min(480px, 82vw);
  aspect-ratio: calc(var(--board-cols) / var(--board-rows));
  border: 2px solid var(--tile-edge);
  border-radius: 12px;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(114, 98, 69, 0.11) 1px, transparent 1px),
    linear-gradient(rgba(114, 98, 69, 0.12) 1px, transparent 1px),
    linear-gradient(180deg, #faf4e2 0%, #f2e7cd 100%);
  background-size:
    calc(100% / var(--board-cols)) 100%,
    100% calc(100% / var(--board-rows)),
    100% 100%;
}

.board {
  position: absolute;
  inset: 0;
}

.overlay {
  position: absolute;
  inset: 0;
  background: rgba(40, 24, 10, 0.68);
  color: #fff8e9;
  display: grid;
  place-items: center;
  text-align: center;
  backdrop-filter: blur(2px);
}

.overlay.hidden {
  display: none;
}

.overlay h2 {
  margin: 0;
  font-family: "ZCOOL XiaoWei", serif;
  font-size: 34px;
}

.overlay p {
  margin: 8px 0 0;
}

.tile {
  position: absolute;
  width: calc(100% / var(--board-cols));
  height: calc(100% / var(--board-rows));
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 9px;
  border: 1px solid var(--tile-edge);
  font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "SimSun-ExtB", "SimSun", sans-serif;
  user-select: none;
  transition: transform 120ms ease, box-shadow 120ms ease;
  overflow: hidden;
}

.tile-main {
  font-size: clamp(17px, 2.5vw, 28px);
  font-weight: 700;
  line-height: 1;
}

.tile-note {
  position: absolute;
  left: 3px;
  right: 3px;
  bottom: 2px;
  text-align: center;
  font-size: clamp(9px, 1.05vw, 11px);
  line-height: 1;
  color: rgba(55, 45, 30, 0.8);
  pointer-events: none;
}

.tile.has-note .tile-main {
  transform: translateY(-5px);
}

.tile.locked {
  background: linear-gradient(180deg, var(--tile) 0%, #f2e3c7 100%);
  box-shadow: inset 0 -2px 0 rgba(69, 53, 33, 0.18);
  cursor: pointer;
}

.tile.locked:hover {
  transform: translateY(-1px);
}

.tile.falling {
  background: linear-gradient(180deg, #ffe4b8 0%, var(--tile-fall) 100%);
  box-shadow: 0 6px 16px rgba(121, 62, 17, 0.22);
}

.tile.selected {
  border-color: #8f2600;
  background: linear-gradient(180deg, #ff9a68 0%, var(--tile-selected) 100%);
  color: #fff9f2;
}

.tile.selected .tile-note {
  color: rgba(255, 245, 228, 0.95);
}

.hint-row {
  margin-top: 12px;
  font-size: 13px;
  color: var(--ink-soft);
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.stat-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fffaf0;
  padding: 10px;
}

.stat-label {
  color: var(--ink-soft);
  font-size: 13px;
}

.stat-value {
  font-size: 32px;
  font-family: "ZCOOL XiaoWei", serif;
  color: #9b3512;
}

.card {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 251, 241, 0.84);
  padding: 12px;
}

h3 {
  margin: 0 0 10px;
  font-size: 16px;
}

.char-box {
  width: 76px;
  height: 76px;
  border-radius: 12px;
  border: 2px solid #9b754f;
  background: #fff5de;
  display: grid;
  place-items: center;
  font-size: 44px;
  font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "SimSun-ExtB", "SimSun", sans-serif;
  font-weight: 700;
}

.inline-kv {
  margin-top: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.inline-kv strong {
  font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", "SimSun", sans-serif;
  font-weight: 700;
  color: #6f2d10;
}

.speed-slider {
  width: 100%;
  margin-top: 8px;
  accent-color: var(--brand-deep);
}

.small {
  font-size: 12px;
  color: var(--ink-soft);
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 34px;
  margin-bottom: 10px;
}

.chip {
  padding: 4px 9px;
  border-radius: 999px;
  background: #f3e4c8;
  border: 1px solid #bda07a;
  font-size: 14px;
}

.preview-main {
  min-height: 30px;
  font-size: 17px;
  color: #72300f;
}

.reveal-1,
.reveal-2,
.reveal-3 {
  opacity: 0;
  transform: translateY(10px);
  animation: reveal 520ms cubic-bezier(0.25, 0.8, 0.25, 1) forwards;
}

.reveal-2 {
  animation-delay: 120ms;
}

.reveal-3 {
  animation-delay: 220ms;
}

@keyframes reveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
    width: min(100%, 96vw);
    margin: 10px auto 14px;
    gap: 10px;
  }

  .panel-side {
    order: -1;
    position: sticky;
    top: 8px;
    z-index: 9;
    max-height: 44vh;
    overflow-y: auto;
    padding: 10px;
    gap: 8px;
  }

  .title-row {
    align-items: start;
    flex-direction: column;
    margin-bottom: 10px;
  }

  .board-wrap {
    width: min(560px, 96vw);
  }

  .panel-main {
    padding: 12px;
  }

  .panel-side > .card:nth-of-type(2) {
    order: 1;
  }

  .panel-side > .card:nth-of-type(3) {
    order: 2;
  }

  .panel-side > .card.reveal-3 {
    order: 3;
  }

  .panel-side > .stat-grid {
    order: 4;
  }

  .panel-side .card {
    padding: 10px;
  }

  .panel-side .card h3 {
    margin-bottom: 8px;
  }

  .panel-side .card.reveal-3 .small {
    display: none;
  }

  .panel-side .char-box {
    width: 58px;
    height: 58px;
    font-size: 34px;
  }

  .panel-side .inline-kv {
    margin-top: 6px;
  }

  .chip-list {
    min-height: 28px;
    margin-bottom: 8px;
  }

  .preview-main {
    min-height: 24px;
    font-size: 16px;
  }
}