/* ================= 棋盘玩法（bd-*）================= */
/* 皮肤：每个皮肤只定义 --bd-* 变量；四个队伍色 --bd-c0..3 */
.bd-s-wine { --bd-bg1: #4a1028; --bd-bg2: #120509; --bd-cell1: #34121f; --bd-cell2: #1d0a12; --bd-edge: #c9a063; --bd-glow: #ff4d6d; --bd-ink: #f7e6cf;
  --bd-c0: #e04866; --bd-c1: #e2b04f; --bd-c2: #5f86de; --bd-c3: #3fb08c; }
.bd-s-neon { --bd-bg1: #2a0f5a; --bd-bg2: #05030e; --bd-cell1: #1e1240; --bd-cell2: #0d0820; --bd-edge: #ff3d9a; --bd-glow: #2de2e6; --bd-ink: #f4ecff;
  --bd-c0: #ff3d9a; --bd-c1: #ffd23d; --bd-c2: #2de2e6; --bd-c3: #9b6bff; }
.bd-s-gold { --bd-bg1: #3a2a10; --bd-bg2: #0c0905; --bd-cell1: #2b200e; --bd-cell2: #151007; --bd-edge: #e7c26a; --bd-glow: #ffd36b; --bd-ink: #fff1cf;
  --bd-c0: #c8364f; --bd-c1: #e7c26a; --bd-c2: #4566ad; --bd-c3: #2f9a74; }
.bd-s-onyx { --bd-bg1: #2a2733; --bd-bg2: #07060a; --bd-cell1: #1f1c26; --bd-cell2: #0f0d13; --bd-edge: #bdb4d6; --bd-glow: #c9a7ff; --bd-ink: #efeaf8;
  --bd-c0: #e46a84; --bd-c1: #d8b46c; --bd-c2: #7ea4e6; --bd-c3: #6ccaa8; }

/* 格子类型颜色 */
.bd-k-t { --k: var(--l1); } .bd-k-d { --k: var(--l4); } .bd-k-all { --k: var(--gold); } .bd-k-pen, .bd-k-snk { --k: var(--l5); }
.bd-k-x2 { --k: var(--l3); } .bd-k-duo, .bd-k-gift, .bd-k-lad { --k: var(--l2); } .bd-k-safe { --k: var(--mute); }
.bd-k-fwd, .bd-k-back, .bd-k-swap { --k: var(--bd-glow, var(--gold)); } .bd-k-start, .bd-k-end, .bd-k-fly { --k: var(--gold); }

.bd-wrap { display: flex; flex-direction: column; gap: 12px; }

/* ---------- 选项页 ---------- */
.bd-intro { display: flex; gap: 14px; align-items: flex-start; padding: 16px; border-radius: 20px;
  background: radial-gradient(120% 140% at 0% 0%, var(--bd-bg1), var(--bd-bg2)); border: 1px solid color-mix(in srgb, var(--bd-edge) 40%, transparent);
  box-shadow: 0 10px 40px -18px var(--bd-glow); }
.bd-intro span { font-size: 34px; line-height: 1; color: var(--bd-edge); text-shadow: 0 0 18px var(--bd-glow); }
.bd-intro p { margin: 0; font-size: 13px; line-height: 1.7; color: var(--bd-ink); opacity: .9; }
.bd-opt-box { display: flex; flex-direction: column; gap: 10px; }
.bd-opt-box h4 { margin: 0; font-size: 12px; letter-spacing: 3px; color: var(--mute); font-weight: 500; }
.bd-skins { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.bd-skin { display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 10px 4px; font-size: 12px; border-radius: 14px; border: 1px solid var(--line); background: var(--card); }
.bd-skin i { width: 100%; aspect-ratio: 1.2; border-radius: 10px; display: block;
  background: radial-gradient(circle at 30% 30%, var(--bd-glow) 0 6%, transparent 7%), radial-gradient(circle at 68% 62%, var(--bd-c1) 0 9%, transparent 10%),
    radial-gradient(120% 120% at 50% 20%, var(--bd-bg1), var(--bd-bg2)); border: 1px solid var(--bd-edge); box-shadow: inset 0 0 14px #0008; }
.bd-skin.on { border-color: var(--gold); box-shadow: 0 0 0 1px var(--gold), 0 0 22px -6px var(--gold); }
.bd-skin.on span { color: var(--gold); }
.bd-seg { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 8px; }
.bd-seg button { display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 10px 6px; border-radius: 14px; }
.bd-seg button small { font-size: 11px; color: var(--mute); }
.bd-seg button.on { border-color: var(--gold); background: linear-gradient(160deg, color-mix(in srgb, var(--gold) 18%, var(--card)), var(--card)); }
.bd-seg button.on b { color: var(--gold); }

/* ---------- 棋盘 ---------- */
.bd-turn { display: flex; align-items: center; justify-content: center; gap: 8px; font-size: 17px; flex-wrap: wrap; }
.bd-turn i, .bd-chip i { width: 12px; height: 12px; border-radius: 50%; display: inline-block; flex: none; box-shadow: 0 0 10px currentColor; }
.bd-turn b { color: var(--gold); }
.bd-turn small { width: 100%; text-align: center; font-size: 12px; color: var(--mute); letter-spacing: 1px; }
.bd-board { border-radius: 24px; padding: 3px; background: linear-gradient(145deg, var(--bd-edge), transparent 40%, transparent 60%, var(--bd-edge));
  box-shadow: 0 18px 50px -20px var(--bd-glow), 0 0 0 1px #0006; }
.bd-svg { display: block; width: 100%; height: auto; border-radius: 21px; font-family: inherit; }
.bd-st1 { stop-color: var(--bd-bg1); } .bd-st2 { stop-color: var(--bd-bg2); }
.bd-st3 { stop-color: var(--bd-cell1); } .bd-st4 { stop-color: var(--bd-cell2); }
.bd-frame { fill: none; stroke: var(--bd-edge); stroke-opacity: .35; stroke-width: 1; }
.bd-cell { fill: url(#bdCellG); stroke: var(--bd-edge); stroke-opacity: .28; stroke-width: .6; }
.bd-tint { opacity: .34; }
.bd-lc.hot .bd-tint { opacity: .62; }
.bd-lc.hot .bd-cell { stroke-opacity: .7; }
.bd-heat { opacity: .13; }
.bd-gl { fill: var(--k, var(--bd-ink)); font-size: 9.5px; font-weight: 700; text-anchor: middle; dominant-baseline: central; pointer-events: none; }
.bd-lc .bd-gl { fill: var(--bd-ink); paint-order: stroke; stroke: #0007; stroke-width: 1.6px; }
.bd-gl.sp { fill: var(--gold); }
.bd-mark { fill: var(--k); }
.bd-num { font-size: 8.5px; fill: var(--bd-ink); opacity: .38; }
.bd-base { fill-opacity: .14; stroke-width: 1.4; stroke-opacity: .8; }
.bd-base.off { fill-opacity: .05; stroke-opacity: .25; }
.bd-hangar { fill: #0005; stroke-width: .8; stroke-dasharray: 2 3; stroke-opacity: .7; }
.bd-basegl { font-size: 34px; text-anchor: middle; dominant-baseline: central; opacity: .1; }
.bd-tri { opacity: .78; stroke: #0006; stroke-width: .8; }
.bd-core { fill: var(--bd-bg2); stroke: var(--gold); stroke-width: 1; filter: url(#bdGlow); }
.bd-flyline { fill: none; stroke-width: 1.4; stroke-dasharray: 3 3; opacity: .75; animation: bdDash 1.2s linear infinite; }
@keyframes bdDash { to { stroke-dashoffset: -12; } }

/* 环游 */
.bd-track { fill: none; stroke: var(--bd-edge); stroke-opacity: .25; stroke-width: 30; }
.bd-inner { fill: none; stroke: var(--bd-edge); stroke-opacity: .35; stroke-width: .8; stroke-dasharray: 2 5; }
.bd-heart { fill: var(--bd-glow); opacity: .1; animation: bdBeat 2.4s ease-in-out infinite; transform-origin: 170px 220px; }
@keyframes bdBeat { 0%, 100% { opacity: .08; transform: scale(1); } 15% { opacity: .17; transform: scale(1.04); } 30% { opacity: .1; } 45% { opacity: .16; transform: scale(1.03); } }
.bd-ct1 { fill: var(--bd-ink); opacity: .6; font-size: 12px; letter-spacing: 3px; text-anchor: middle; }
.bd-ct2 { font-size: 30px; font-weight: 800; letter-spacing: 6px; text-anchor: middle; filter: url(#bdGlow); }
.bd-gem { fill: url(#bdCellG); stroke: var(--k, var(--bd-edge)); stroke-width: 1.6; }
.bd-gem.bd-k-start { stroke-width: 2.4; filter: url(#bdGlow); }

/* 蛇梯 */
.bd-ladder { filter: url(#bdGlow); }
.bd-ladder line { stroke: var(--gold); stroke-width: 2.6; stroke-linecap: round; }
.bd-ladder .bd-rung { stroke-width: 1.8; opacity: .85; }
.bd-sb { fill: none; stroke: var(--l5); stroke-width: 8; stroke-linecap: round; filter: url(#bdGlow); opacity: .92; }
.bd-ss { fill: none; stroke: var(--l3); stroke-width: 2.4; stroke-linecap: round; stroke-dasharray: 1 6; opacity: .8; }
.bd-sh { fill: var(--l5); stroke: var(--l3); stroke-width: 1.2; }
.bd-eye { fill: var(--gold); }

/* 棋子：逐格移动 */
.bd-tok { transition: transform .21s cubic-bezier(.3, .7, .4, 1.35); }
.bd-tok.bd-fly { transition: transform .72s cubic-bezier(.5, 0, .3, 1); }
.bd-tokc { stroke: #fff; stroke-width: 1.4; stroke-opacity: .9; filter: url(#bdGlow); }
.bd-halo { opacity: 0; }
.bd-tok.me .bd-halo { animation: bdHalo 1.3s ease-in-out infinite; }
@keyframes bdHalo { 0%, 100% { opacity: .1; } 50% { opacity: .55; } }
.bd-tokt { fill: #1a0b10; font-weight: 800; text-anchor: middle; dominant-baseline: central; pointer-events: none; }

/* 骰子坞 */
.bd-dock { position: sticky; bottom: 8px; z-index: 5; display: flex; align-items: center; gap: 14px; padding: 10px 14px; border-radius: 20px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--bd-bg1) 85%, transparent), color-mix(in srgb, var(--bd-bg2) 92%, transparent));
  border: 1px solid color-mix(in srgb, var(--bd-edge) 45%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); box-shadow: 0 10px 30px -10px #000c; }
.bd-die { width: 62px; height: 62px; flex: none; padding: 7px; border: 0; border-radius: 15px; background: linear-gradient(145deg, #fffaf0, #e7d3b0);
  box-shadow: inset 0 -4px 0 #c9ad7d, 0 6px 18px -4px var(--bd-glow), 0 0 0 1px #fff6; }
.bd-face { display: grid; grid-template-columns: repeat(3, 1fr); grid-template-rows: repeat(3, 1fr); width: 100%; height: 100%; place-items: center; }
.bd-face i { width: 10px; height: 10px; border-radius: 50%; }
.bd-face i.on { background: radial-gradient(circle at 35% 35%, #8a2440, #3d0a1a); }
.bd-die.bd-rolling { animation: bdTumble .32s linear infinite; }
.bd-die.bd-land { animation: bdLand .35s ease; }
@keyframes bdTumble { 0% { transform: rotate(0) scale(.92); } 25% { transform: rotate(90deg) translateY(-6px) scale(1.04); } 50% { transform: rotate(180deg) scale(.95); }
  75% { transform: rotate(270deg) translateY(-4px) scale(1.03); } 100% { transform: rotate(360deg) scale(.92); } }
@keyframes bdLand { 0% { transform: scale(1.25); } 60% { transform: scale(.94); } 100% { transform: none; } }
.bd-msg { flex: 1; min-width: 0; font-size: 14px; color: var(--bd-ink); line-height: 1.5; }
.bd-big { font-size: 22px; color: var(--gold); margin: 0 2px; }
.bd-opts { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }
.bd-optb { padding: 7px 10px; font-size: 13px; border-radius: 10px; border-color: var(--gold); color: var(--gold); background: #0005; }

.bd-chips { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
.bd-chip { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 999px; font-size: 12px; border: 1px solid var(--line); background: var(--card); }
.bd-chip small { color: var(--mute); font-size: 11px; }
.bd-chip.on { border-color: var(--gold); box-shadow: 0 0 14px -4px var(--gold); }
.bd-key { display: flex; flex-wrap: wrap; gap: 4px 12px; justify-content: center; font-size: 11px; color: var(--mute); }
.bd-key span { display: inline-flex; align-items: center; gap: 4px; }
.bd-key b { color: var(--k); font-size: 12px; }

/* ---------- 任务前导 / 终局 ---------- */
.bd-pre { display: flex; align-items: center; justify-content: center; gap: 10px; font-size: 13px; color: var(--mute); letter-spacing: 1px; }
.bd-mini { width: 28px; height: 28px; padding: 3px; border-radius: 7px; background: linear-gradient(145deg, #fffaf0, #e7d3b0); display: inline-block; }
.bd-mini .bd-face i { width: 5px; height: 5px; }
.bd-call { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-radius: 16px; border: 1px solid var(--k); text-align: left;
  background: linear-gradient(120deg, color-mix(in srgb, var(--k) 18%, transparent), transparent 70%); animation: pop .35s ease; }
.bd-call b { flex: none; width: 40px; height: 40px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 18px;
  background: var(--k); color: #160a0f; box-shadow: 0 0 18px -2px var(--k); }
.bd-call span { font-size: 14px; line-height: 1.5; }
.bd-call em { display: block; font-style: normal; font-size: 12px; letter-spacing: 2px; color: var(--k); }
.bd-plist { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.bd-plist button { display: flex; align-items: center; justify-content: center; gap: 8px; flex-wrap: wrap; }
.bd-plist small { width: 100%; font-size: 11px; color: var(--mute); }
.bd-win { text-align: center; padding: 22px 16px; border-radius: 22px; background: radial-gradient(120% 120% at 50% 0%, var(--bd-bg1), var(--bd-bg2));
  border: 1px solid var(--bd-edge); box-shadow: 0 0 50px -14px var(--gold); }
.bd-crown { font-size: 48px; color: var(--gold); text-shadow: 0 0 24px var(--gold); animation: pop .5s ease; }
.bd-win h3 { font-size: 24px; color: var(--gold); letter-spacing: 2px; }
.bd-win p { margin: 8px 0 0; font-size: 14px; color: var(--bd-ink); }
.bd-final { display: flex; flex-direction: column; gap: 6px; text-align: left; padding: 14px 16px; border-radius: 16px; border-width: 1px; line-height: 1.6; }
.bd-final small { font-size: 11px; letter-spacing: 2px; color: var(--mute); }
.bd-final.lv1 { border-color: var(--l1); } .bd-final.lv2 { border-color: var(--l2); } .bd-final.lv3 { border-color: var(--l3); }
.bd-final.lv4 { border-color: var(--l4); } .bd-final.lv5 { border-color: var(--l5); box-shadow: 0 0 24px -8px var(--l5); }

@media (prefers-reduced-motion: reduce) {
  .bd-flyline, .bd-heart, .bd-tok.me .bd-halo, .bd-die.bd-rolling { animation: none; }
}

/* ================= POLISH：免罚卡 / 交易 ================= */
.bd-free { width: 100%; margin: 6px 0; border-color: var(--gold); color: var(--gold); background: #d9b26f12; font-size: 14px; }
.bd-optb.gold { background: #d9b26f22; color: var(--gold2, var(--gold)); }