/* ============================================================
   盲盒竞拍 · 沉浸式仓库寻宝美学
   深夜仓库 + 聚光灯 + 粉尘；一体化机台状态条；双牌匾飞翼布局。
   ============================================================ */

:root {
  --bg0: #0e131b;
  --bg1: #151b27;
  --panel: #1d2434;
  --panel2: #232a3a;
  --line: #33405e;
  --text: #e8ecf4;
  --dim: #93a0b8;
  --gold: #ffd08a;
  --hot: #ff9d8a;
  --cold: #8fb8ff;
  --win: #9ae6a0;
  --loss: #ff8f8f;
  --wood: #8a6a3f;
  --wood2: #9c7849;
  --iron: #3a4f78;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--bg0);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  overscroll-behavior: none;
  min-height: 100%;
}

#game-shell {
  width: 100%;
  min-height: 100vh;
  background:
    radial-gradient(1200px 600px at 50% 0%, rgba(58, 78, 120, 0.28), transparent 70%),
    radial-gradient(900px 500px at 85% 100%, rgba(34, 60, 48, 0.35), transparent 70%),
    linear-gradient(160deg, #141a24 0%, #0e131b 55%, #0a0f16 100%);
  padding-bottom: max(68px, calc(16px + env(safe-area-inset-bottom)));
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ---------------- 一体化机顶状态条 ---------------- */

#stage-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  background: linear-gradient(180deg, rgba(29, 36, 52, 0.92), rgba(20, 26, 38, 0.85));
  border-bottom: 1px solid var(--line);
  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.45);
}

#stage-title {
  flex: 1;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 1px;
}
#stage-title small { font-size: 11px; color: var(--dim); font-weight: 500; margin-left: 6px; }

.bar-btn {
  appearance: none;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, #26314a, #1c2436);
  color: var(--text);
  font-size: 13px;
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
  box-shadow: 0 2px 0 rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.08);
}
.bar-btn:active { transform: translateY(2px); box-shadow: 0 0 0 rgba(0,0,0,0.4); }

/* ---------------- 通用面板与按钮质感 ---------------- */

.panel {
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
}

.panel-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--gold);
  margin: 10px 0 6px;
  text-transform: uppercase;
}
.panel-title:first-child { margin-top: 0; }

.big-btn, .hammer-btn, .skill-btn, .diff-btn, .char-card, .chal-card {
  appearance: none;
  border: 1px solid var(--line);
  border-radius: 12px;
  cursor: pointer;
  font-family: inherit;
  transition: transform 0.08s ease, box-shadow 0.08s ease, background 0.15s ease;
}

.big-btn {
  background: linear-gradient(180deg, #3a4f78, #2b3a5c);
  color: var(--text);
  font-size: 15px;
  font-weight: 700;
  padding: 12px 22px;
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.12);
}
.big-btn.alt {
  background: linear-gradient(180deg, #2c3a55, #1e2940);
}
.big-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 0 rgba(0,0,0,0.45), inset 0 1px 0 rgba(255,255,255,0.14); }
.big-btn:active { transform: translateY(2px); box-shadow: 0 1px 0 rgba(0,0,0,0.45); }

.hammer-btn {
  background: linear-gradient(180deg, #7a5230, #5c3d20);
  border-color: #8a6a3f;
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  padding: 12px 16px;
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.15);
  flex: 1;
}
.hammer-btn:hover:not(:disabled) { transform: translateY(-2px); }
.hammer-btn:active:not(:disabled) { transform: translateY(2px); }
.hammer-btn:disabled, .skill-btn:disabled { opacity: 0.45; cursor: default; }

.skill-btn {
  background: linear-gradient(180deg, #23402e, #1a3022);
  border-color: #4a7a54;
  color: var(--win);
  font-size: 13px;
  font-weight: 700;
  padding: 12px 12px;
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}
.skill-btn:hover:not(:disabled) { transform: translateY(-2px); }
.skill-btn:active:not(:disabled) { transform: translateY(2px); }
.skill-btn.used { opacity: 0.5; }

.skill-box.passive {
  font-size: 12px;
  color: var(--dim);
  border: 1px dashed var(--line);
  border-radius: 10px;
  padding: 10px;
  text-align: center;
  flex: 1;
}

/* ---------------- 主菜单 ---------------- */

.menu-panel, .challenge-panel, .result-panel {
  max-width: 760px;
  margin: 24px auto;
  padding: 22px;
  background: linear-gradient(180deg, rgba(29, 36, 52, 0.9), rgba(20, 26, 38, 0.9));
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.menu-title {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: 3px;
  text-align: center;
  color: var(--gold);
  text-shadow: 0 0 24px rgba(255, 208, 138, 0.35);
}
.menu-subtitle { text-align: center; color: var(--dim); font-size: 13px; margin: 4px 0 18px; }

.menu-block { margin-bottom: 16px; }
.menu-label { font-size: 12px; font-weight: 700; letter-spacing: 2px; color: var(--dim); margin-bottom: 8px; }

.char-grid { display: flex; flex-wrap: wrap; gap: 10px; }
.char-card {
  flex: 1;
  min-width: 150px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px 8px;
  background: linear-gradient(180deg, var(--panel2), var(--panel));
}
.char-card.active { border-color: var(--gold); box-shadow: 0 0 0 2px rgba(255, 208, 138, 0.35); }
.char-icon { font-size: 26px; }
.char-name { font-size: 14px; font-weight: 700; }
.char-desc { font-size: 11px; color: var(--dim); text-align: center; }

.diff-row { display: flex; gap: 10px; }
.diff-btn {
  flex: 1;
  padding: 10px;
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
}
.diff-btn.active { border-color: var(--gold); box-shadow: 0 0 0 2px rgba(255, 208, 138, 0.35); color: var(--gold); }

.menu-actions { display: flex; gap: 12px; justify-content: center; margin: 18px 0; }

.menu-stats {
  display: flex;
  gap: 8px;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}
.stat-cell { flex: 1; text-align: center; }
.stat-cell span { display: block; font-size: 11px; color: var(--dim); }
.stat-cell b { display: block; font-size: 15px; margin-top: 2px; color: var(--gold); }

/* ---------------- 残局挑战 ---------------- */

.challenge-list { display: flex; flex-direction: column; gap: 8px; max-height: 56vh; overflow-y: auto; }
.chal-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  text-align: left;
  color: var(--text);
}
.chal-card:hover { transform: translateY(-2px); }
.chal-card.locked { opacity: 0.45; cursor: default; }
.chal-id {
  font-size: 18px;
  font-weight: 800;
  color: var(--dim);
  font-variant-numeric: tabular-nums;
  min-width: 34px;
}
.chal-main { flex: 1; }
.chal-name { font-size: 14px; font-weight: 700; }
.chal-name i { color: var(--gold); font-style: normal; margin-left: 6px; }
.chal-desc { display: block; font-size: 12px; color: var(--dim); margin-top: 2px; }
.chal-lock { font-size: 16px; }

/* ---------------- 对局三栏（桌面双牌匾飞翼） ---------------- */

.arena {
  display: grid;
  grid-template-columns: 224px minmax(0, 1fr) 296px;
  gap: 14px;
  max-width: 1160px;
  width: 100%;
  margin: 14px auto 0;
  padding: 0 16px;
  align-items: start;
}

/* ---- 左侧：对手牌匾 ---- */

.rivals { display: flex; flex-direction: column; gap: 10px; }
.rival-card {
  background: linear-gradient(180deg, #2a2533, #221e2c);
  border: 1px solid #54407a;
  border-radius: 12px;
  padding: 10px;
  position: relative;
  cursor: pointer;
  transition: transform 0.08s ease;
}
.rival-card:hover { transform: translateY(-2px); }
.rival-head { display: flex; align-items: center; gap: 8px; }
.rival-icon { font-size: 22px; }
.rival-name { font-weight: 700; font-size: 14px; flex: 1; }
.rival-cash { font-size: 12px; color: var(--gold); font-variant-numeric: tabular-nums; }
.rival-tag { font-size: 11px; color: var(--dim); margin: 4px 0; }
.rival-tend { font-size: 11px; color: var(--dim); display: flex; justify-content: space-between; }
.rival-tend b { color: var(--text); }
.rival-meter {
  height: 5px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.08);
  margin-top: 6px;
  overflow: hidden;
}
.rival-meter .fill {
  display: block;
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, #8fb8ff, #ff9d8a);
}
.emo-bubble {
  position: absolute;
  top: -10px;
  right: -6px;
  background: #3a2f1a;
  border: 1px solid #8a6a3f;
  color: var(--gold);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 10px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.5);
  white-space: nowrap;
  z-index: 5;
}

/* ---- 中央：拍卖舞台（聚光灯 + 仓库） ---- */

.stage {
  background:
    radial-gradient(60% 46% at 50% 38%, rgba(255, 224, 178, 0.16), transparent 70%),
    radial-gradient(100% 80% at 50% 50%, rgba(58, 78, 120, 0.18), transparent 75%),
    linear-gradient(180deg, #1a2230, #131926);
  border: 1px solid var(--line);
  border-radius: 14px;
  min-height: 520px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 26px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
}

.round-badge {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--gold);
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 208, 138, 0.3);
  border-radius: 20px;
  padding: 4px 14px;
  z-index: 3;
}

.stage-inner {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 16px 20px;
}

/* 聚光灯束（呼吸） */
.stage::before {
  content: "";
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 46%;
  height: 72%;
  background: radial-gradient(ellipse at top, rgba(255, 235, 200, 0.10), transparent 60%);
  animation: beam 7s ease-in-out infinite;
  pointer-events: none;
}
@keyframes beam {
  0%, 100% { opacity: 0.55; }
  50% { opacity: 1; }
}

/* 粉尘粒子（微量） */
.stage::after {
  content: "";
  position: absolute;
  top: 30%;
  left: 38%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(255, 235, 200, 0.5);
  filter: blur(0.5px);
  animation: dust 13s linear infinite;
  pointer-events: none;
}
@keyframes dust {
  0% { transform: translate(0, 0); opacity: 0; }
  8% { opacity: 0.6; }
  92% { opacity: 0.4; }
  100% { transform: translate(24px, -90px); opacity: 0; }
}

/* 仓库盲盒（CSS 木箱，无描边圈，柔光托起） */
.crate-stand {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.crate-box {
  position: relative;
  width: 210px;
  height: 150px;
  perspective: 700px;
}
.crate-body {
  position: absolute;
  inset: 0;
  border-radius: 10px;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.12), transparent 40%),
    linear-gradient(180deg, var(--wood2), var(--wood));
  box-shadow: inset 0 -6px 12px rgba(0, 0, 0, 0.35);
}
.crate-strap {
  position: absolute;
  left: 0; right: 0;
  top: 30%; bottom: 30%;
  background: rgba(60, 78, 110, 0.75);
  border-radius: 3px;
}
.crate-tag {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 46px;
  height: 46px;
  border-radius: 6px;
  background: #f2e8d8;
  color: #5c462a;
  font-size: 22px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.15);
}
.crate-lid {
  position: absolute;
  top: -16px;
  left: -8px;
  right: -8px;
  height: 26px;
  border-radius: 8px;
  background: linear-gradient(180deg, #a8875a, var(--wood2));
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.4);
  transform-origin: left center;
  transition: transform 0.5s ease;
}
.crate-lid.open { transform: rotateX(55deg) translateY(-18px); opacity: 0.9; }

/* 无边界径向柔光（严禁描边圈） */
.crate-glow {
  position: absolute;
  left: 50%;
  bottom: -18px;
  transform: translateX(-50%);
  width: 260px;
  height: 60px;
  background: radial-gradient(ellipse at center, rgba(255, 208, 138, 0.35), rgba(255, 208, 138, 0) 70%);
  pointer-events: none;
}
.crate-label { font-size: 13px; color: var(--dim); letter-spacing: 1px; }

/* ---- 亮价结算板 ---- */

.reveal-board {
  width: 100%;
  max-width: 440px;
  text-align: center;
}
.reveal-title { font-size: 16px; font-weight: 800; letter-spacing: 2px; color: var(--gold); margin-bottom: 14px; }
.bid-grid { display: flex; flex-direction: column; gap: 8px; }
.bid-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 14px;
}
.bid-card.winner {
  border-color: var(--gold);
  background: linear-gradient(180deg, #2e2833, #251f2d);
  box-shadow: 0 0 0 2px rgba(255, 208, 138, 0.3);
}
.bid-amount { font-weight: 800; color: var(--gold); font-variant-numeric: tabular-nums; }
.bid-mark { font-size: 11px; color: var(--hot); }
.reveal-note { margin-top: 12px; font-size: 13px; color: var(--dim); }

/* ---- 开箱板 ---- */

.open-board { width: 100%; max-width: 460px; text-align: center; position: relative; }
.open-flash {
  position: absolute;
  inset: -40px;
  border-radius: 20px;
  pointer-events: none;
  animation: flash 0.7s ease-out forwards;
}
.open-flash.profit { background: radial-gradient(circle, rgba(255, 208, 138, 0.45), rgba(255, 208, 138, 0) 70%); }
.open-flash.loss { background: radial-gradient(circle, rgba(120, 140, 170, 0.4), rgba(120, 140, 170, 0) 70%); }
@keyframes flash {
  0% { opacity: 1; }
  100% { opacity: 0.1; }
}
.open-crate-revealed { display: flex; justify-content: center; margin-bottom: 8px; }
.open-item {
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 44px;
  animation: pop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}
@keyframes pop {
  0% { transform: translateX(-50%) scale(0); }
  100% { transform: translateX(-50%) scale(1); }
}
.open-title { font-size: 16px; font-weight: 800; letter-spacing: 2px; color: var(--gold); margin: 10px 0 12px; }
.open-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.os-cell {
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 4px;
}
.os-cell span { display: block; font-size: 10px; color: var(--dim); }
.os-cell b { font-size: 13px; color: var(--text); font-variant-numeric: tabular-nums; }
.os-cell.profit b { color: var(--win); }
.os-cell.loss b { color: var(--loss); }
.open-emo { margin-top: 12px; font-size: 14px; color: var(--gold); }

/* ---- 右侧：情报牌匾 + 出价台 ---- */

.market-list { display: flex; flex-direction: column; gap: 5px; }
.mkt-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  padding: 5px 8px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
}
.mkt-row.hot { color: var(--hot); }
.mkt-row.cold { color: var(--cold); }
.mkt-row.flat { color: var(--flat); }
.mkt-row.hidden { color: var(--dim); font-style: italic; }

.hint-list { list-style: none; display: flex; flex-direction: column; gap: 5px; }
.hint-list li {
  font-size: 12px;
  line-height: 1.5;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 8px;
  padding: 6px 8px;
}
.hint-list.private li { color: var(--gold); background: rgba(255, 208, 138, 0.06); }
.hint-list li.dim { color: var(--dim); }

.est-range {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--dim);
  margin-top: 10px;
}
.est-range b { color: var(--text); font-variant-numeric: tabular-nums; }

.gossip-tip {
  margin-top: 8px;
  font-size: 12px;
  color: var(--win);
  background: rgba(154, 230, 160, 0.08);
  border: 1px solid rgba(154, 230, 160, 0.3);
  border-radius: 8px;
  padding: 6px 8px;
}

.cash-box {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin: 12px 0 8px;
  font-size: 12px;
  color: var(--dim);
}
.cash-box b { font-size: 20px; color: var(--gold); font-variant-numeric: tabular-nums; }

.bid-console {
  background: linear-gradient(180deg, #26202b, #1e1926);
  border: 1px solid #54407a;
  border-radius: 14px;
  padding: 12px;
}
.bid-slider-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.bid-slider-row input[type="range"] {
  flex: 1;
  accent-color: var(--gold);
  min-height: 44px;
}
.bid-step {
  font-size: 12px;
  color: var(--gold);
  background: rgba(255, 208, 138, 0.12);
  border: 1px solid rgba(255, 208, 138, 0.35);
  border-radius: 8px;
  padding: 6px 8px;
  cursor: pointer;
  user-select: none;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.bid-step:active { transform: translateY(2px); }

.bid-value { display: flex; align-items: baseline; gap: 8px; margin: 6px 0 10px; }
.bid-value b { font-size: 26px; color: var(--gold); font-variant-numeric: tabular-nums; }
.bid-hint { font-size: 11px; color: var(--dim); }

.bid-actions { display: flex; gap: 8px; }

.timer-row { margin-top: 8px; text-align: center; }
.timer { font-size: 12px; color: var(--dim); font-variant-numeric: tabular-nums; }

/* ---- 阶段操作条 ---- */

.phase-bar {
  max-width: 1160px;
  width: 100%;
  margin: 10px auto 0;
  padding: 0 16px;
  display: flex;
  justify-content: center;
}

/* ---- 终局面板 ---- */

.rank-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 14px; }
.rank-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  border: 1px solid var(--line);
}
.rank-row.me { border-color: var(--gold); box-shadow: 0 0 0 2px rgba(255, 208, 138, 0.3); }
.rank-no { font-size: 18px; font-weight: 800; color: var(--dim); min-width: 30px; }
.rank-name { flex: 1; font-weight: 700; }
.rank-asset { font-weight: 800; color: var(--gold); font-variant-numeric: tabular-nums; }

.result-cards { display: flex; gap: 10px; margin-bottom: 12px; }
.res-card {
  flex: 1;
  text-align: center;
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
}
.res-card span { display: block; font-size: 11px; color: var(--dim); }
.res-card b { font-size: 16px; margin-top: 2px; display: block; }
.rating-S { color: var(--gold); }
.rating-A { color: var(--win); }
.rating-B { color: var(--cold); }
.rating-C { color: var(--dim); }

.badge-row { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-bottom: 12px; }
.badge {
  background: linear-gradient(180deg, #2e2833, #251f2d);
  border: 1px solid #54407a;
  color: var(--gold);
  font-size: 13px;
  padding: 6px 12px;
  border-radius: 20px;
}

/* ---- 规则弹窗 & toast ---- */

.modal {
  position: fixed;
  inset: 0;
  background: rgba(10, 14, 22, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}
.modal-box {
  max-width: 560px;
  width: 100%;
  background: linear-gradient(180deg, #232a3a, #171e2c);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
  text-align: center;
}
.modal-title { font-size: 18px; font-weight: 800; color: var(--gold); margin-bottom: 12px; }
.modal-text {
  font-family: inherit;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text);
  text-align: left;
  white-space: pre-wrap;
  margin-bottom: 14px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: max(90px, calc(40px + env(safe-area-inset-bottom)));
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.85);
  color: var(--text);
  font-size: 13px;
  padding: 10px 18px;
  border-radius: 12px;
  border: 1px solid var(--line);
  z-index: 90;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
  animation: toast-in 0.25s ease-out;
}
@keyframes toast-in {
  from { opacity: 0; transform: translateX(-50%) translateY(10px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ============================================================
   移动端（≤768px）：三栏收折为上下 HUD 掌机
   ============================================================ */

@media (max-width: 768px) {
  .arena {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 10px;
    margin: 8px auto 0;
  }
  /* 左侧对手牌匾 → 顶部横向一排 */
  .rivals {
    flex-direction: row;
    overflow-x: auto;
  }
  .rival-card { min-width: 150px; flex: 1; }
  .emo-bubble { display: none; }
  /* 中央舞台保持主角 */
  .stage { min-height: 340px; order: -1; }
  /* 右侧情报收为下方出价台（情报精简展示） */
  .intel-panel { order: 3; }
  .panel-title { margin-top: 8px; }
  .bid-console { padding: 10px; }
  .hammer-btn, .skill-btn { min-height: 48px; }
  .phase-bar { padding: 0 10px; }
  #game-shell { padding-bottom: max(68px, calc(16px + env(safe-area-inset-bottom))); }
}

/* ============================================================
   动效降级（prefers-reduced-motion）
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .stage::before, .stage::after { animation: none; opacity: 0.5; }
  .crate-lid.open { transform: none; }
  .open-item { animation: none; }
  .big-btn:hover, .hammer-btn:hover, .skill-btn:hover, .char-card:hover, .chal-card:hover, .rival-card:hover { transform: none; }
}