/* ══════════════════════════════════════════════════════════════
   挖坑 · 样式表
   皮肤通过 :root 上的 --sk-* 变量切换；结构不随皮肤变化。
   ══════════════════════════════════════════════════════════════ */

/* ── 默认皮肤（经典红木），JS 载入后会按所选皮肤覆盖这些变量 ── */
:root {
  --sk-bg: radial-gradient(circle at 50% 0%, #3a1f14 0%, #1d0f09 70%);
  --sk-bg-2: #241209;
  --sk-felt: radial-gradient(circle at 50% 40%, #8a3630 0%, #6b2b23 55%, #4a1c17 100%);
  --sk-felt-edge: #a9744f;
  --sk-glow: rgba(217, 164, 65, .35);
  --sk-card-face: linear-gradient(160deg, #fffdf6, #f3e7cf);
  --sk-card-back: #8c2f2a;
  --sk-card-back-2: #d9a441;
  --sk-card-border: #d8c9ac;
  --sk-text-red: #c62828;
  --sk-text-black: #2b2b2b;
  --sk-card-shadow: 0 6px 14px rgba(0, 0, 0, .45);
  --sk-text: #f6e9d2;
  --sk-text-dim: #c2ab8c;
  --sk-accent: #d9a441;
  --sk-accent-2: #c0392b;
  --sk-btn-bg: linear-gradient(180deg, #a9744f, #7d4f31);
  --sk-btn-text: #fff6e2;
  --sk-btn-edge: #5d3a22;
  --sk-seat-bg: rgba(35, 18, 12, .72);
  --sk-danger: #e05a4f;
  --sk-win: #e8c26a;
  --sk-font-title: "STKaiti", "KaiTi", "Songti SC", serif;
  --sk-font-body: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --sk-radius: 14px;
  --sk-pattern: none;
  --sk-particle: 1;

  /* 尺寸
     注意：--card-h 必须由「当前作用域内的 --card-w」推导。
     任何把 --card-w 缩小的容器（.played / .bottom-cards）都要同时重算 --card-h，
     否则卡片会被拉成又窄又长的细条（v0.1 的显示缺陷）。 */
  /* 牌面尺寸档位（JS 按设置写入 1 / 1.18 / 1.36） */
  --card-scale: 1;
  /* 同时受视口宽与高约束：桌面上取到 92px，手机上仍有 46px，不会再被 vw 卡死在 64px */
  --card-w-fit: clamp(46px, min(10.5vw, 13.5vh), 92px);
  --card-w-base: calc(var(--card-w-fit) * var(--card-scale));
  --card-ratio: 1.42;
  /* 座位随牌面一起放大 */
  --seat-w: clamp(78px, calc(var(--card-w-base) * 1.45), 132px);
  --card-w: var(--card-w-base);
  --card-h: calc(var(--card-w) * var(--card-ratio));
  --hand-overlap: calc(var(--card-w) * -0.42);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--sk-bg);
  background-attachment: fixed;
  color: var(--sk-text);
  font-family: var(--sk-font-body);
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

body { transition: background .26s ease, color .26s ease; }

.hidden { display: none !important; }
.muted { color: var(--sk-text-dim); }
.center-text { text-align: center; }

button { font-family: inherit; cursor: pointer; }
button:disabled { opacity: .42; cursor: not-allowed; }

/* ────────────────────────── 通用控件 ────────────────────────── */

.btn {
  border: 1px solid var(--sk-btn-edge);
  background: var(--sk-btn-bg);
  color: var(--sk-btn-text);
  padding: 10px 18px;
  border-radius: calc(var(--sk-radius) * .6);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .02em;
  transition: transform .12s ease, filter .16s ease, box-shadow .16s ease;
  box-shadow: 0 2px 0 rgba(0, 0, 0, .28);
}
.btn:hover:not(:disabled) { filter: brightness(1.1); }
.btn:active:not(:disabled) { transform: translateY(1px); box-shadow: none; }
.btn.primary { box-shadow: 0 2px 0 rgba(0, 0, 0, .3), 0 0 22px var(--sk-glow); }
.btn.ghost {
  background: transparent;
  color: var(--sk-text);
  border-color: color-mix(in srgb, var(--sk-text) 30%, transparent);
  box-shadow: none;
}
.btn.ghost:hover:not(:disabled) { background: color-mix(in srgb, var(--sk-text) 12%, transparent); }
.btn.danger { background: linear-gradient(180deg, var(--sk-danger), color-mix(in srgb, var(--sk-danger) 65%, #000)); border-color: var(--sk-danger); }
.btn.big { width: 100%; padding: 15px; font-size: 18px; letter-spacing: .1em; }
.btn:focus-visible, .icon-btn:focus-visible, .card:focus-visible {
  outline: 2px solid var(--sk-accent);
  outline-offset: 2px;
}

.icon-btn {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--sk-text) 25%, transparent);
  background: color-mix(in srgb, var(--sk-bg-2) 70%, transparent);
  color: var(--sk-text);
  font-size: 16px;
  display: grid; place-items: center;
  transition: background .16s ease;
}
.icon-btn:hover { background: color-mix(in srgb, var(--sk-text) 16%, transparent); }

.panel {
  background: color-mix(in srgb, var(--sk-bg-2) 78%, transparent);
  border: 1px solid color-mix(in srgb, var(--sk-text) 14%, transparent);
  border-radius: var(--sk-radius);
  padding: 14px 16px;
  backdrop-filter: blur(6px);
}
.panel-title { margin: 0 0 10px; font-size: 15px; font-weight: 700; letter-spacing: .08em; color: var(--sk-text-dim); }

/* ────────────────────────── 启动页 ────────────────────────── */

.screen { min-height: 100dvh; }

.screen-start {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px 14px 32px;
}

.start-wrap {
  width: 100%;
  max-width: 520px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.brand { text-align: center; position: relative; }
.brand-mark {
  width: 62px; height: 62px; margin: 0 auto 8px;
  border-radius: 18px;
  display: grid; place-items: center;
  font-family: var(--sk-font-title);
  font-size: 34px; font-weight: 700;
  color: var(--sk-btn-text);
  background: var(--sk-btn-bg);
  border: 2px solid var(--sk-accent);
  box-shadow: 0 0 30px var(--sk-glow);
}
.title {
  font-family: var(--sk-font-title);
  font-size: clamp(38px, 12vw, 58px);
  margin: 0;
  letter-spacing: .16em;
  text-indent: .16em;
  color: var(--sk-text);
  text-shadow: 0 3px 0 color-mix(in srgb, var(--sk-accent) 60%, transparent);
}
.subtitle { margin: 6px 0 0; color: var(--sk-text-dim); font-size: 13px; letter-spacing: .06em; }

.profile-panel { display: flex; align-items: center; gap: 12px; }
.avatar-frame {
  width: 48px; height: 48px; flex: 0 0 auto;
  border-radius: 50%;
  display: grid; place-items: center;
  font-size: 22px; font-weight: 700;
  border: 2px solid currentColor;
  background: color-mix(in srgb, currentColor 22%, transparent);
}
.profile-main { flex: 1; min-width: 0; }
.profile-line1 { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.profile-level { font-weight: 700; font-size: 15px; }
.profile-points { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--sk-accent); }
.profile-line2 { font-size: 12px; color: var(--sk-text-dim); margin-top: 2px; }
.progress { height: 6px; border-radius: 3px; background: color-mix(in srgb, var(--sk-text) 16%, transparent); overflow: hidden; margin-top: 7px; }
.progress > i { display: block; height: 100%; background: currentColor; border-radius: 3px; transition: width .5s ease; }

.difficulty-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 9px; }
.diff-card {
  text-align: left;
  border: 1.5px solid color-mix(in srgb, var(--sk-text) 18%, transparent);
  background: color-mix(in srgb, var(--sk-text) 7%, transparent);
  border-radius: calc(var(--sk-radius) * .7);
  padding: 10px 11px;
  color: var(--sk-text);
  transition: border-color .16s ease, background .16s ease, transform .12s ease;
}
.diff-card:hover { transform: translateY(-2px); }
.diff-card[aria-pressed="true"] {
  border-color: var(--sk-accent);
  background: color-mix(in srgb, var(--sk-accent) 18%, transparent);
  box-shadow: 0 0 18px var(--sk-glow);
}
.diff-head { display: flex; align-items: center; gap: 6px; font-weight: 700; font-size: 14px; }
.diff-head .stars { margin-left: auto; font-size: 10px; letter-spacing: 1px; color: var(--sk-accent); }
.diff-tag { font-size: 11px; color: var(--sk-accent); margin-top: 3px; }
.diff-desc { font-size: 11px; color: var(--sk-text-dim); margin-top: 5px; line-height: 1.45; }

.start-links { display: grid; grid-template-columns: repeat(auto-fit, minmax(84px, 1fr)); gap: 8px; }
.start-links .btn { padding: 10px 4px; font-size: 12.5px; }
.footnote { text-align: center; font-size: 11px; color: var(--sk-text-dim); margin: 2px 0 0; }

/* ────────────────────────── 牌桌 ────────────────────────── */

.screen-table {
  display: flex; flex-direction: column;
  height: 100dvh; padding: 8px 10px 6px; gap: 8px;
  align-items: center;
}
/* 桌面上别把牌桌拉成 1920px 宽 —— 限制在舒适宽度，牌自然就更大更清楚 */
.screen-table > * { width: 100%; max-width: 1240px; }
@media (min-width: 1240px) {
  :root { --card-w-fit: clamp(46px, min(10.5vw, 13.5vh), 108px); }
}

.topbar { display: flex; align-items: center; gap: 8px; padding: 0 2px; }
.badges { display: flex; gap: 6px; flex: 1; justify-content: center; flex-wrap: wrap; }
.badge {
  font-size: 11.5px;
  padding: 4px 9px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--sk-bg-2) 80%, transparent);
  border: 1px solid color-mix(in srgb, var(--sk-text) 18%, transparent);
  color: var(--sk-text-dim);
  white-space: nowrap;
}
.badge.accent { color: var(--sk-accent); border-color: var(--sk-accent); font-weight: 700; }
.badge.accent.pulse { animation: pulse .5s ease 3; }
.topbar-right { display: flex; gap: 6px; }

.table {
  position: relative;
  flex: 1;
  min-height: 268px;
  border-radius: var(--sk-radius);
  background: var(--sk-felt);
  background-image: var(--sk-pattern), var(--sk-felt);
  border: 3px solid var(--sk-felt-edge);
  box-shadow: inset 0 0 60px rgba(0, 0, 0, .35), 0 10px 30px rgba(0, 0, 0, .35);
  overflow: hidden;
}
.felt-decor { position: absolute; inset: 0; pointer-events: none; opacity: calc(var(--sk-particle) * .55); }
[data-skin="changan"] .felt-decor {
  background:
    radial-gradient(circle at 15% 20%, var(--sk-accent) 0 2px, transparent 3px),
    radial-gradient(circle at 82% 30%, var(--sk-accent-2) 0 2px, transparent 3px),
    linear-gradient(90deg, transparent 49.6%, color-mix(in srgb, var(--sk-accent) 22%, transparent) 50%, transparent 50.4%);
  background-size: 140px 140px, 180px 180px, 100% 100%;
  animation: scan 6s linear infinite;
}
[data-skin="shadow"] .felt-decor {
  background-image:
    repeating-linear-gradient(45deg, color-mix(in srgb, var(--sk-accent) 12%, transparent) 0 2px, transparent 2px 12px);
}
[data-skin="porcelain"] .felt-decor {
  background-image:
    radial-gradient(circle at 50% 50%, transparent 42%, color-mix(in srgb, var(--sk-accent) 14%, transparent) 43%, transparent 45%);
  background-size: 120px 120px;
}

/* 座位 */
.seat {
  position: absolute;
  /* 坐标由 layoutSeats() 直接算成「左上角」，不用 translate(-50%,-50%) 居中 ——
     百分比 transform 会参与 transition、又会被别的 transform 规则覆盖，
     实测在座位上来回不稳定。直接给左上角最省事也最可预测。 */
  left: var(--seat-x, 0px);
  top: var(--seat-y, 0px);
  width: var(--seat-w);
  padding: 8px 7px;
  border-radius: calc(var(--sk-radius) * .7);
  background: var(--sk-seat-bg);
  border: 1.5px solid transparent;
  text-align: center;
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
  backdrop-filter: blur(4px);
}
/* 位置由 layoutSeats() 按等边三角形写入 --seat-x / --seat-y */
.seat-self { border-color: color-mix(in srgb, var(--sk-accent) 45%, transparent); }
.seat.active {
  border-color: var(--sk-accent);
  box-shadow: 0 0 20px var(--sk-glow);
  /* 用独立的 scale 属性放大：它不参与 transform，绝不会连带影响定位 */
  scale: 1.06;
}
.seat.role-digger { border-color: color-mix(in srgb, var(--sk-accent-2) 75%, transparent); }
.seat .avatar { font-size: calc(var(--seat-w) * .27); line-height: 1.05; }
.seat-name { font-size: calc(var(--seat-w) * .15); font-weight: 700; margin-top: 1px; }
/* 身份与张数并成一行，座位整体矮一半，三角形里才塞得下三组出牌区 */
.seat-meta {
  display: flex; align-items: center; justify-content: center;
  gap: 4px; margin-top: 3px; flex-wrap: nowrap;
}
.seat-role {
  font-size: calc(var(--seat-w) * .12); padding: 1px 6px; border-radius: 999px;
  display: inline-block; white-space: nowrap;
  background: color-mix(in srgb, var(--sk-text) 15%, transparent);
  color: var(--sk-text-dim);
}
.seat-role[data-role="digger"] { background: var(--sk-accent-2); color: #fff; font-weight: 700; }
.seat-role[data-role="ally"] { background: color-mix(in srgb, var(--sk-accent) 30%, transparent); color: var(--sk-text); }
.seat-count { font-size: calc(var(--seat-w) * .13); color: var(--sk-text-dim); white-space: nowrap; }
.seat-count b { color: var(--sk-text); font-size: calc(var(--seat-w) * .175); font-variant-numeric: tabular-nums; }
.seat-role { font-size: calc(var(--seat-w) * .125); }
.seat-count.low b { color: var(--sk-danger); }
.seat.thinking .avatar { animation: bob .7s ease-in-out infinite; }
.seat .bubble-mini {
  position: absolute; left: 50%; top: -6px; transform: translate(-50%, -100%);
  background: color-mix(in srgb, var(--sk-bg-2) 92%, transparent);
  color: var(--sk-text);
  border: 1px solid var(--sk-accent);
  border-radius: 10px; padding: 4px 8px; font-size: 11px; white-space: nowrap;
  animation: pop .22s ease;
}

/* 中央底牌 */
.center {
  position: absolute;
  left: var(--center-x, 50%);
  top: var(--center-y, 12%);
  transform: translate(-50%, -50%);
  text-align: center;
}
.bottom-label { font-size: 10.5px; color: var(--sk-text-dim); letter-spacing: .18em; margin-bottom: 3px; }
.bottom-cards {
  display: flex;
  gap: 3px;
  justify-content: center;
  /* 底牌要比出牌区更小：它卡在两个上家座位之间，宽度有限 */
  --card-w: calc(var(--card-w-base) * .52);
  --card-h: calc(var(--card-w) * var(--card-ratio));
}
.trick-info {
  margin-top: 6px; font-size: 11.5px; color: var(--sk-text-dim);
  min-height: 15px; letter-spacing: .04em;
}

/* 出牌区
   注意：右家绝不能用 flex-direction: row-reverse —— 那会把一手牌的顺序整个倒过来
   （DOM 里是 10 J Q，画出来变成 Q J 10，J 就跑到错误的位置上）。
   绝对定位 + right 已经能让牌组向左生长，顺序保持自然。 */
.played {
  position: absolute;
  left: var(--px, 50%);
  top: var(--py, 50%);
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: row;          /* 顺序必须保持自然，绝不能用 row-reverse */
  gap: 3px;
  align-items: center;
  --card-w: calc(var(--card-w-base) * .82);
  --card-h: calc(var(--card-w) * var(--card-ratio));
  min-height: var(--card-h);
}
.played .card { margin-left: calc(var(--card-w) * -0.34); }
.played .card:first-child { margin-left: 0; }
.played .pass-mark {
  font-size: 12px; color: var(--sk-text-dim);
  border: 1px dashed color-mix(in srgb, var(--sk-text) 30%, transparent);
  border-radius: 999px; padding: 3px 10px;
}
.played .finish-mark { font-size: 12px; color: var(--sk-win); font-weight: 700; }

/* 桌面台词气泡 */
.bubble {
  position: absolute; left: 50%; bottom: 46%;
  transform: translateX(-50%);
  max-width: 78%;
  background: color-mix(in srgb, var(--sk-bg-2) 94%, transparent);
  border: 1px solid var(--sk-accent);
  color: var(--sk-text);
  padding: 7px 13px;
  border-radius: 12px;
  font-size: 13px;
  text-align: center;
  box-shadow: 0 6px 20px rgba(0, 0, 0, .4);
  animation: pop .2s ease;
  pointer-events: none;
  z-index: 30;
}

/* ────────────────────────── 手牌与操作 ────────────────────────── */

.selfbar {
  position: relative;          /* 撤回按钮的定位基准 */
  flex: 0 0 auto;
  background: color-mix(in srgb, var(--sk-bg-2) 72%, transparent);
  border: 1px solid color-mix(in srgb, var(--sk-text) 12%, transparent);
  border-radius: var(--sk-radius);
  padding: 6px 8px 8px;
}
.self-info {
  display: flex; align-items: center; gap: 8px; justify-content: center;
  font-size: 11.5px; color: var(--sk-text-dim); min-height: 18px; flex-wrap: wrap;
}
.self-info .chip {
  padding: 2px 8px; border-radius: 999px;
  background: color-mix(in srgb, var(--sk-text) 12%, transparent);
}
.self-info .chip.digger { background: var(--sk-accent-2); color: #fff; font-weight: 700; }

.hand-wrap {
  /* 手牌会自己折行塞进可用宽度，所以这里不需要横向滚动；
     overflow-x 仍留 auto 作为兜底 —— 万一算错也是「能滚」而不是「牌不见了」。 */
  overflow-x: auto; overflow-y: hidden;
  scrollbar-width: none;              /* 正常情况本来就没有滚动条，顺手藏掉细条 */
  padding: 24px 0 2px;
}
.hand-wrap::-webkit-scrollbar { height: 0; }

.hand {
  display: flex;
  flex-direction: column;             /* 一行塞不下就折成两行 */
  align-items: center;
  gap: 0;
  padding: 0 6px;
}
.hand-row {
  display: flex;
  justify-content: center;
  padding-top: 24px;                  /* 给选中上浮留空间 */
  margin-top: -18px;                  /* 行与行之间收紧，但不至于压住上浮的牌 */
}
.hand-row:first-child { padding-top: 0; margin-top: 0; }
.hand .card {
  margin-left: var(--hand-overlap);
  transition: transform .16s ease, box-shadow .16s ease;
  cursor: pointer;
}
/* 注：曾给每张牌加过向右扩展的透明命中区，实测有害无益 ——
   叠牌时右侧本来就被下一张盖住（扩展区被压在下面，点不到），
   而最后一张的扩展区会伸出容器，把 scrollWidth 撑大，反而逼出横向滚动条。
   现在靠「露出的牌条足够宽」来保证好点：由 planHandRows / layoutHand 保证。 */
/* 动画播放期间手牌整体锁定，避免指针下的牌突然移位导致点错 */
.hand.locked .card { cursor: progress; }
.hand .card:first-child { margin-left: 0; }
.hand .card:hover { transform: translateY(-8px); }
.hand .card.selected { transform: translateY(-19px); box-shadow: 0 0 0 2px var(--sk-accent), var(--sk-card-shadow); z-index: 6; }
.hand .card.selected:hover { transform: translateY(-22px); }
.hand .card.hinted { animation: hintPulse .8s ease 2; }
.hand .card.dealt { animation: dealIn .3s ease backwards; }

/* 撤回按钮：绝对定位在 selfbar 右上角，永远不参与文档流，因此不会挤动任何东西 */
.undo-btn {
  position: absolute;
  top: 6px; right: 10px;
  z-index: 4;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px 7px;
  border-radius: 999px;
  border: 1px solid var(--sk-accent);
  background: color-mix(in srgb, var(--sk-bg-2) 92%, transparent);
  color: var(--sk-text);
  font-size: 12.5px; font-family: inherit;
  overflow: hidden;
  box-shadow: 0 3px 12px rgba(0, 0, 0, .35);
  animation: pop .18s ease;
}
.undo-btn[hidden] { display: none; }
.undo-btn:hover { background: color-mix(in srgb, var(--sk-accent) 22%, transparent); }
/* 剩余时间用底部进度条表达，而不是每秒改一次文字 —— 文字变化会让按钮宽度抖动 */
.undo-bar {
  position: absolute; left: 0; bottom: 0;
  height: 2px; width: 100%;
  background: var(--sk-accent);
  transform-origin: left center;
  animation: undoDrain 6s linear forwards;
}
@keyframes undoDrain { from { transform: scaleX(1); } to { transform: scaleX(0); } }

/* 键盘光标：用「虚线」描边，与实线的选中态区分开 —— 两者都是强调色的话会分不清 */
.hand .card.cursor {
  outline: 3px dashed var(--sk-accent);
  outline-offset: -3px;
  z-index: 7;
}
.hand .card.cursor.selected { outline-color: var(--sk-text); }

.actions { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-top: 4px; }
.actions .btn { min-width: 84px; }
@media (min-width: 900px) {
  .screen-table { padding: 8px 14px 10px; gap: 8px; }
  .selfbar { padding: 8px 12px 10px; }
  .hand-wrap { padding: 14px 0 2px; }
  .actions { flex-wrap: nowrap; margin-top: 2px; }
  .actions .btn { min-width: 112px; padding: 11px 18px; font-size: 15.5px; }
  /* 提示文字与按钮并排，省下一整行高度留给牌桌 */
  .actions .hint-text {
    width: auto; flex: 1 1 auto; min-width: 0;
    text-align: left; padding-left: 6px; font-size: 13px;
  }
  .self-info { font-size: 13px; }
}
.actions .hint-text { width: 100%; text-align: center; font-size: 11.5px; color: var(--sk-text-dim); }
.actions .btn.bid { min-width: 66px; }

/* 出牌保护：拆对子/拆炸弹时的提醒 */
.guard {
  width: 100%;
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  justify-content: center;
  padding: 8px 12px;
  border-radius: calc(var(--sk-radius) * .55);
  background: color-mix(in srgb, var(--sk-danger) 16%, transparent);
  border: 1.5px solid color-mix(in srgb, var(--sk-danger) 55%, transparent);
  font-size: 12.5px; line-height: 1.5;
}
.guard .guard-text { flex: 1; min-width: 150px; text-align: left; }
.guard .guard-text b { color: var(--sk-accent); }
.guard .btn { padding: 7px 13px; font-size: 13px; min-width: auto; }
.btn.confirm { background: linear-gradient(180deg, var(--sk-danger), color-mix(in srgb, var(--sk-danger) 60%, #000)); border-color: var(--sk-danger); }

/* ────────────────────────── 扑克牌 ────────────────────────── */

.card {
  position: relative;
  width: var(--card-w);
  height: var(--card-h);
  flex: 0 0 auto;
  border-radius: calc(var(--sk-radius) * .45);
  background: var(--sk-card-face);
  border: 1px solid var(--sk-card-border);
  box-shadow: var(--sk-card-shadow);
  color: var(--sk-text-black);
  font-family: var(--sk-font-body);
  transition: background .26s ease, border-color .26s ease;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.card[data-color="red"] { color: var(--sk-text-red); }
/* 牌角：给一个「与牌点宽度无关」的固定宽度盒子，内容居中。
   否则 J（最窄，56.8/100px）与 10（最宽，118/100px）会因为盒子贴边收缩而光学错位，
   J 看起来就像偏了一格。 */
.card .corner {
  position: absolute;
  display: flex; flex-direction: column; align-items: center; justify-content: flex-start;
  width: calc(var(--card-w) * .46);
  line-height: 1; font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.card .corner.tl { top: 5%; left: 7%; }
.card .corner.br { bottom: 5%; right: 7%; transform: rotate(180deg); }
.card .corner b { font-size: calc(var(--card-w) * .345); text-align: center; }
.card .corner i { font-size: calc(var(--card-w) * .27); font-style: normal; margin-top: 1px; }
.card .pip {
  position: absolute; inset: 0; display: grid; place-items: center;
  font-size: calc(var(--card-w) * .54); opacity: .9;
}
.card.back {
  background: var(--sk-card-back);
  border-color: var(--sk-card-back-2);
  overflow: hidden;
}
.card.back::before {
  content: "";
  position: absolute; inset: 8%;
  border: 2px solid var(--sk-card-back-2);
  border-radius: calc(var(--sk-radius) * .28);
  opacity: .85;
}
.card.back::after {
  content: "坑";
  position: absolute; inset: 0;
  display: grid; place-items: center;
  font-family: var(--sk-font-title);
  font-size: calc(var(--card-w) * .46);
  color: var(--sk-card-back-2);
  opacity: .92;
}
.card.back.back-classic::before {
  background-image: repeating-linear-gradient(
    45deg,
    transparent 0 4px,
    color-mix(in srgb, var(--sk-card-back-2) 40%, transparent) 4px 6px
  );
}
.card.back.back-porcelain::after { content: "青"; }
.card.back.back-qinling::after { content: "雪"; }
.card.back.back-changan::after { content: "唐"; }
.card.back.back-shadow::after { content: "影"; }
.card.back.back-shadow::before { border-style: dashed; }
.card.back.back-changan::before { box-shadow: 0 0 12px var(--sk-accent); }
/* .mini 只做语义标记：缩放一律由容器（.bottom-cards）通过 --card-w 决定，
   这里再写死一个倍率会覆盖容器的值，导致底牌比出牌区还小。 */
.card.mini { --card-h: calc(var(--card-w) * var(--card-ratio)); }

/* ────────────────────────── 覆盖层 / 弹窗 ────────────────────────── */

.overlay {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(0, 0, 0, .62);
  backdrop-filter: blur(3px);
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
  animation: fade .18s ease;
}
.modal {
  width: 100%; max-width: 520px;
  max-height: 86dvh;
  overflow-y: auto;
  background: color-mix(in srgb, var(--sk-bg-2) 96%, transparent);
  border: 1.5px solid color-mix(in srgb, var(--sk-text) 20%, transparent);
  border-radius: var(--sk-radius);
  padding: 16px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .55);
  animation: pop .2s ease;
}
.modal.small { max-width: 360px; }
.modal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.modal-head h2 { margin: 0; font-size: 17px; }
.modal-actions { display: flex; gap: 8px; margin-top: 14px; }
.modal-actions.column { flex-direction: column; }
.modal-actions .btn { flex: 1; }

/* 结算 */
.result-modal { text-align: center; }
.result-title { font-family: var(--sk-font-title); font-size: 34px; margin: 4px 0 2px; letter-spacing: .12em; }
.result-title.win { color: var(--sk-win); text-shadow: 0 0 26px var(--sk-glow); }
.result-title.lose { color: var(--sk-danger); }
.result-sub { color: var(--sk-text-dim); font-size: 12.5px; margin-bottom: 12px; }
.result-breakdown {
  font-size: 13px; line-height: 1.9; color: var(--sk-text-dim);
  background: color-mix(in srgb, var(--sk-text) 7%, transparent);
  border-radius: calc(var(--sk-radius) * .6);
  padding: 10px;
}
.result-breakdown .row { display: flex; justify-content: space-between; }
.result-breakdown .row b { color: var(--sk-text); font-variant-numeric: tabular-nums; }
.result-delta { font-size: 34px; font-weight: 800; margin: 12px 0 4px; font-variant-numeric: tabular-nums; }
.result-delta.plus { color: var(--sk-win); }
.result-delta.minus { color: var(--sk-danger); }
.result-level { font-size: 12.5px; color: var(--sk-text-dim); }
.result-level .up { color: var(--sk-accent); font-weight: 700; }

/* ────────────────────────── 内容网格（皮肤 / 语音 / 难度） ────────────────────────── */

.skin-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.skin-card {
  border: 1.5px solid color-mix(in srgb, var(--sk-text) 18%, transparent);
  border-radius: calc(var(--sk-radius) * .7);
  overflow: hidden;
  background: color-mix(in srgb, var(--sk-text) 6%, transparent);
  color: var(--sk-text);
  text-align: left;
  padding: 0;
  transition: transform .14s ease, border-color .16s ease;
}
.skin-card:hover:not(:disabled) { transform: translateY(-2px); }
.skin-card[aria-pressed="true"] { border-color: var(--sk-accent); box-shadow: 0 0 16px var(--sk-glow); }
.skin-card:disabled { opacity: .62; }
.skin-preview {
  height: 74px; display: flex; align-items: center; justify-content: center; gap: 5px;
  border-bottom: 1px solid color-mix(in srgb, var(--sk-text) 14%, transparent);
}
.skin-preview .mini-card {
  width: 26px; height: 36px; border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, .35);
  display: grid; place-items: center;
  font-size: 12px; font-weight: 700;
}
.skin-meta { padding: 8px 9px 10px; }
.skin-name { font-weight: 700; font-size: 13.5px; display: flex; align-items: center; gap: 5px; }
.skin-tagline { font-size: 11px; color: var(--sk-text-dim); margin-top: 2px; }
.skin-unlock { font-size: 10.5px; margin-top: 6px; color: var(--sk-text-dim); }
.skin-unlock .bar { height: 4px; border-radius: 2px; background: color-mix(in srgb, var(--sk-text) 18%, transparent); margin-top: 4px; overflow: hidden; }
.skin-unlock .bar > i { display: block; height: 100%; background: var(--sk-accent); }
.tag-current { font-size: 10px; padding: 1px 6px; border-radius: 999px; background: var(--sk-accent); color: var(--sk-bg-2); font-weight: 700; }

.voice-list { display: flex; flex-direction: column; gap: 8px; }
.voice-card {
  display: flex; align-items: center; gap: 10px;
  border: 1.5px solid color-mix(in srgb, var(--sk-text) 18%, transparent);
  border-radius: calc(var(--sk-radius) * .6);
  padding: 9px 11px;
  background: color-mix(in srgb, var(--sk-text) 6%, transparent);
  color: var(--sk-text);
  text-align: left;
  width: 100%;
}
.voice-card[aria-pressed="true"] { border-color: var(--sk-accent); background: color-mix(in srgb, var(--sk-accent) 15%, transparent); }
.voice-card .v-avatar { font-size: 24px; }
.voice-card .v-main { flex: 1; min-width: 0; }
.voice-card .v-name {
  font-weight: 700; font-size: 13.5px;
  display: flex; align-items: center; flex-wrap: wrap; gap: 4px;
}
.voice-card .v-desc { font-size: 11px; color: var(--sk-text-dim); margin-top: 2px; }
.v-region { font-size: 9.5px; font-weight: 400; color: var(--sk-text-dim); }
.v-dialect {
  font-size: 9.5px; padding: 1px 5px; border-radius: 999px;
  background: color-mix(in srgb, var(--sk-accent-2) 30%, transparent);
  color: var(--sk-text);
}

/* 曲目列表 */
.track-list { display: flex; flex-direction: column; gap: 6px; margin-top: 8px; }
.track-row {
  display: flex; gap: 9px; align-items: center;
  padding: 7px 9px; border-radius: 8px;
  background: color-mix(in srgb, var(--sk-text) 6%, transparent);
}
.track-play {
  width: 28px; height: 28px; flex: 0 0 auto;
  border-radius: 50%;
  border: 1px solid var(--sk-accent);
  background: transparent;
  color: var(--sk-accent);
  font-size: 11px;
  display: grid; place-items: center;
}
.track-play:hover { background: color-mix(in srgb, var(--sk-accent) 20%, transparent); }
.track-main { min-width: 0; }
.track-name { font-size: 12.5px; font-weight: 600; }
.track-desc { font-size: 11px; color: var(--sk-text-dim); margin-top: 2px; line-height: 1.45; }

.setting-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 9px 0; border-bottom: 1px solid color-mix(in srgb, var(--sk-text) 12%, transparent);
}
.setting-row:last-child { border-bottom: none; }
.setting-row label { font-size: 13.5px; }
.setting-row .sub { font-size: 11px; color: var(--sk-text-dim); }
.setting-row input[type="range"] { width: 130px; accent-color: var(--sk-accent); }
.setting-row select {
  background: var(--sk-bg-2); color: var(--sk-text);
  border: 1px solid color-mix(in srgb, var(--sk-text) 25%, transparent);
  border-radius: 7px; padding: 5px 8px; font-family: inherit; font-size: 13px;
}
.switch { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; }

/* 语音自检 */
.test-btns { display: flex; gap: 6px; flex: 0 0 auto; }
.test-btns .btn { padding: 7px 11px; font-size: 13px; }
.test-out {
  margin: 8px 0 0;
  padding: 9px 11px;
  border-radius: calc(var(--sk-radius) * .5);
  background: color-mix(in srgb, var(--sk-text) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--sk-text) 14%, transparent);
  font: 11.5px/1.65 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--sk-text);
  max-height: 230px;
  overflow: auto;
}

/* 规则表 */
.rule-list { display: flex; flex-direction: column; gap: 10px; font-size: 13px; line-height: 1.6; }
.rule-block { background: color-mix(in srgb, var(--sk-text) 6%, transparent); border-radius: calc(var(--sk-radius) * .6); padding: 10px 12px; }
.rule-block h3 { margin: 0 0 6px; font-size: 13.5px; color: var(--sk-accent); }
.rule-block p { margin: 0 0 4px; color: var(--sk-text-dim); }
.rank-strip { display: flex; gap: 3px; flex-wrap: wrap; margin-top: 6px; }
.rank-chip {
  font-size: 12px; font-weight: 700; padding: 3px 7px; border-radius: 5px;
  background: var(--sk-card-face); color: var(--sk-text-black); border: 1px solid var(--sk-card-border);
}
.rank-chip.red { color: var(--sk-text-red); }
.kv { display: flex; justify-content: space-between; font-size: 12.5px; padding: 3px 0; border-bottom: 1px dashed color-mix(in srgb, var(--sk-text) 14%, transparent); }
.kv:last-child { border-bottom: none; }
.kv span:last-child { color: var(--sk-text); font-weight: 600; }

/* 战绩 */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(96px, 1fr)); gap: 8px; margin-bottom: 12px; }
.stat-cell {
  background: color-mix(in srgb, var(--sk-text) 7%, transparent);
  border-radius: calc(var(--sk-radius) * .55); padding: 9px; text-align: center;
}
.stat-cell .v { font-size: 19px; font-weight: 800; font-variant-numeric: tabular-nums; color: var(--sk-text); }
.stat-cell .k { font-size: 10.5px; color: var(--sk-text-dim); margin-top: 2px; }
.history-list { display: flex; flex-direction: column; gap: 5px; font-size: 12px; }
.history-row {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 9px; border-radius: 8px;
  background: color-mix(in srgb, var(--sk-text) 6%, transparent);
}
.history-row .h-delta { font-weight: 700; font-variant-numeric: tabular-nums; margin-left: auto; }
.history-row .h-delta.plus { color: var(--sk-win); }
.history-row .h-delta.minus { color: var(--sk-danger); }
.history-row .h-tag { font-size: 10.5px; color: var(--sk-text-dim); }

/* 新手引导 */
.tutorial-body { font-size: 13.5px; line-height: 1.7; color: var(--sk-text); min-height: 96px; }
.tutorial-body b { color: var(--sk-accent); }
.tutorial-dots { display: flex; gap: 6px; justify-content: center; margin-top: 8px; }
.tutorial-dots i { width: 7px; height: 7px; border-radius: 50%; background: color-mix(in srgb, var(--sk-text) 30%, transparent); }
.tutorial-dots i.on { background: var(--sk-accent); }

/* Toast */
.toast {
  position: fixed; left: 50%; bottom: 12%;
  transform: translateX(-50%);
  background: color-mix(in srgb, var(--sk-bg-2) 96%, transparent);
  border: 1px solid var(--sk-accent);
  color: var(--sk-text);
  padding: 9px 16px; border-radius: 999px;
  font-size: 13px; z-index: 200;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .5);
  animation: pop .18s ease;
  max-width: 82vw; text-align: center;
}

/* ────────────────────────── 动画 ────────────────────────── */

@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes pop { from { opacity: 0; transform: scale(.94) translateY(6px); } to { opacity: 1; transform: none; } }
@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }
@keyframes dealIn { from { opacity: 0; transform: translateY(-34px) rotate(-8deg); } to { opacity: 1; transform: none; } }
@keyframes hintPulse { 0%, 100% { box-shadow: 0 0 0 0 var(--sk-accent); } 50% { box-shadow: 0 0 0 4px color-mix(in srgb, var(--sk-accent) 55%, transparent); } }
@keyframes pulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.16); } }
@keyframes scan { from { background-position: 0 0, 0 0, 0 0; } to { background-position: 140px 140px, -180px 180px, 0 0; } }
@keyframes shake {
  0%, 100% { transform: translate(0, 0); }
  20% { transform: translate(-5px, 2px) rotate(-.4deg); }
  40% { transform: translate(5px, -2px) rotate(.4deg); }
  60% { transform: translate(-4px, 1px); }
  80% { transform: translate(4px, -1px); }
}
.table.shake { animation: shake .36s ease; }
.table.bomb-flash::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(circle at 50% 50%, rgba(255, 220, 120, .55), transparent 62%);
  animation: fade .5s ease reverse;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}


/* ────────────────────────── 多用户 ────────────────────────── */

.profile-name { font-weight: 700; font-size: 15px; }
.user-actions { display: flex; flex-direction: column; gap: 6px; flex: 0 0 auto; }
.btn.small { padding: 6px 12px; font-size: 13px; }
.profile-panel.user-empty { display: flex; align-items: center; gap: 12px; }
.profile-panel.user-empty .profile-main { flex: 1; }
.profile-panel.user-empty .btn { flex: 0 0 auto; padding: 9px 14px; font-size: 14px; }

.user-list { display: flex; flex-direction: column; gap: 7px; }
.user-row {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 11px;
  border: 1.5px solid color-mix(in srgb, var(--sk-text) 16%, transparent);
  border-radius: calc(var(--sk-radius) * .6);
  background: color-mix(in srgb, var(--sk-text) 6%, transparent);
  cursor: pointer;
  transition: border-color .16s ease, background .16s ease, transform .12s ease;
}
.user-row:hover { transform: translateX(2px); }
.user-row[aria-pressed="true"] {
  border-color: var(--sk-accent);
  background: color-mix(in srgb, var(--sk-accent) 15%, transparent);
}
.user-row:focus-visible { outline: 2px solid var(--sk-accent); outline-offset: 2px; }
.user-avatar { font-size: 24px; line-height: 1; flex: 0 0 auto; }
.user-main { flex: 1; min-width: 0; }
.user-name {
  font-weight: 700; font-size: 14px;
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
}
.user-name > span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-sub { font-size: 11px; color: var(--sk-text-dim); margin-top: 2px; }
.user-sub.dim { opacity: .75; }
.user-points {
  font-weight: 700; font-variant-numeric: tabular-nums;
  font-size: 14px; flex: 0 0 auto;
}
.user-del {
  flex: 0 0 auto;
  width: 30px; height: 30px; border-radius: 50%;
  border: 1px solid transparent;
  background: transparent; color: var(--sk-text-dim);
  font-size: 13px;
  display: grid; place-items: center;
}
.user-del:hover { background: color-mix(in srgb, var(--sk-danger) 25%, transparent); color: var(--sk-text); }
.rank-medal { font-size: 13px; }

.user-input-row { display: flex; gap: 8px; align-items: stretch; }
.user-input {
  flex: 1; min-width: 0;
  background: color-mix(in srgb, var(--sk-bg) 65%, transparent);
  border: 1.5px solid color-mix(in srgb, var(--sk-text) 22%, transparent);
  border-radius: calc(var(--sk-radius) * .5);
  color: var(--sk-text);
  font-family: inherit; font-size: 15px;
  padding: 9px 11px;
}
.user-input:focus { outline: none; border-color: var(--sk-accent); }
.user-input-row .btn { flex: 0 0 auto; white-space: nowrap; }

.avatar-picker {
  display: flex; flex-wrap: wrap; gap: 5px; margin-top: 7px;
}
.avatar-opt {
  width: 34px; height: 34px; border-radius: 9px;
  border: 1.5px solid color-mix(in srgb, var(--sk-text) 16%, transparent);
  background: color-mix(in srgb, var(--sk-text) 6%, transparent);
  font-size: 18px; line-height: 1;
  display: grid; place-items: center;
}
.avatar-opt[aria-pressed="true"] {
  border-color: var(--sk-accent);
  background: color-mix(in srgb, var(--sk-accent) 22%, transparent);
  transform: scale(1.06);
}
.user-err { color: var(--sk-danger); font-size: 12px; margin-top: 8px; min-height: 16px; }

/* ────────────────────────── 排行榜 ────────────────────────── */

.rank-tabs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.rank-tab {
  padding: 6px 12px; border-radius: 999px;
  border: 1.5px solid color-mix(in srgb, var(--sk-text) 18%, transparent);
  background: transparent; color: var(--sk-text-dim);
  font-size: 12.5px; font-family: inherit;
}
.rank-tab[aria-pressed="true"] {
  border-color: var(--sk-accent);
  background: color-mix(in srgb, var(--sk-accent) 20%, transparent);
  color: var(--sk-text); font-weight: 700;
}
.rank-list { display: flex; flex-direction: column; gap: 6px; }
.rank-row {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 11px;
  border-radius: calc(var(--sk-radius) * .6);
  background: color-mix(in srgb, var(--sk-text) 6%, transparent);
  border: 1.5px solid transparent;
}
.rank-row.me {
  border-color: var(--sk-accent);
  background: color-mix(in srgb, var(--sk-accent) 14%, transparent);
}
.rank-no {
  flex: 0 0 auto; width: 30px; text-align: center;
  font-weight: 800; font-size: 15px; font-variant-numeric: tabular-nums;
}
.rank-row:nth-child(1) .rank-no,
.rank-row:nth-child(2) .rank-no,
.rank-row:nth-child(3) .rank-no { font-size: 20px; }
.rank-avatar { font-size: 21px; flex: 0 0 auto; }
.rank-main { flex: 1; min-width: 0; }
.rank-name {
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
  font-weight: 700; font-size: 13.5px;
}
.rank-name > span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rank-level {
  font-size: 10.5px; font-weight: 400;
  padding: 1px 6px; border-radius: 999px;
  background: color-mix(in srgb, currentColor 20%, transparent);
}
.rank-detail { font-size: 11px; color: var(--sk-text-dim); margin-top: 2px; }
.rank-value {
  flex: 0 0 auto; font-weight: 800; font-size: 15px;
  font-variant-numeric: tabular-nums; text-align: right;
}

/* ────────────────────────── 响应式 ────────────────────────── */

@media (min-width: 640px) {
  .difficulty-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 380px) {
  .start-links { grid-template-columns: repeat(2, 1fr); }
  .actions .btn { min-width: 72px; font-size: 14px; padding: 9px 12px; }
}

@media (orientation: landscape) and (max-height: 520px) {
  .table { min-height: 200px; }
  .brand-mark { width: 46px; height: 46px; font-size: 24px; }
  .title { font-size: 34px; }
}