:root{--bg: #1b2330;--bg-2: #232f42;--panel: #2b3550;--wood: #3a2f25;--accent: #ffce4a;--accent-2: #4ade80;--danger: #ff5d5d;--text: #f5f7fa;--text-dim: #9fb0c3;--radius: 14px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%;background:radial-gradient(circle at 50% 0%,#25304a 0%,var(--bg) 60%);color:var(--text);-webkit-tap-highlight-color:transparent;overscroll-behavior:none}#app{position:relative;min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:12px 12px 28px}.hidden{display:none!important}.hud{width:min(94vw,520px);display:flex;justify-content:space-between;align-items:center;padding:6px 4px 10px;gap:12px}.hud-left{display:flex;flex-direction:column;line-height:1.2}.hud-level{font-size:13px;color:var(--text-dim)}.hud-name{font-size:18px;font-weight:700}.hud-right{display:flex;align-items:center;gap:14px}.hud-progress{font-size:13px;color:var(--text-dim)}.timer{display:flex;align-items:baseline;gap:2px;font-variant-numeric:tabular-nums}.timer-num{font-size:30px;font-weight:800;color:var(--accent)}.timer.warn .timer-num{color:var(--danger);animation:pulse 1s infinite}.timer-unit{font-size:14px;color:var(--text-dim)}@keyframes pulse{50%{opacity:.45}}.timer-bar-wrap{width:min(94vw,520px);height:6px;background:#ffffff14;border-radius:99px;overflow:hidden;margin-bottom:14px}.timer-bar{height:100%;width:100%;background:linear-gradient(90deg,var(--accent-2),var(--accent));transform-origin:left center;transition:transform .1s linear,background .3s}.timer-bar.warn{background:var(--danger)}.stage{display:flex;justify-content:center;width:100%}.board-host{width:min(94vw,520px)}.puzzle-board{display:grid;grid-template-columns:repeat(var(--cols),1fr);grid-template-rows:repeat(var(--rows),1fr);gap:3px;width:100%;aspect-ratio:1 / 1;padding:6px;background:linear-gradient(160deg,#4a3a2c,#2e2118);border-radius:var(--radius);box-shadow:0 12px 30px #00000073,inset 0 0 0 2px #ffffff0d;touch-action:none;user-select:none}.puzzle-cell{position:relative;overflow:hidden;border-radius:4px;background:#000;cursor:grab;transition:transform .08s ease}.puzzle-cell:active{cursor:grabbing}.puzzle-piece{display:block;width:100%;height:100%;pointer-events:none}.puzzle-cell.selected{outline:3px solid var(--accent);outline-offset:-3px;z-index:3;transform:scale(1.04);box-shadow:0 6px 16px #00000080}.puzzle-cell.correct:after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 3px #4ade80d9;border-radius:4px;pointer-events:none}.puzzle-ghost{position:fixed;pointer-events:none;z-index:1000;opacity:.9;border-radius:6px;box-shadow:0 10px 26px #00000080;outline:2px solid var(--accent)}.screen{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;padding:20px;background:#0c111cb8;backdrop-filter:blur(6px);z-index:50}.card{width:min(92vw,420px);background:linear-gradient(165deg,var(--bg-2),#1a2230);border:1px solid rgba(255,255,255,.08);border-radius:20px;padding:28px 24px 26px;text-align:center;box-shadow:0 20px 50px #00000080;animation:pop .25s ease}@keyframes pop{0%{transform:translateY(10px) scale(.97);opacity:0}}.title{font-size:38px;line-height:1.1;margin:4px 0 16px;letter-spacing:1px}.subtitle{color:var(--text-dim);font-size:14px;line-height:1.7;margin:0 0 18px}.subtitle strong{color:var(--accent)}.rules{text-align:left;margin:0 auto 22px;padding:14px 16px;list-style:none;background:#ffffff0a;border-radius:12px;font-size:14px;line-height:2;color:var(--text)}.rules li{white-space:nowrap}.prep-badge{display:inline-block;font-size:12px;color:var(--accent);background:#ffce4a1f;border-radius:99px;padding:4px 12px;margin-bottom:10px}.prep-name{font-size:26px;margin:0 0 8px}.prep-blurb{color:var(--text-dim);font-size:14px;line-height:1.6;margin:0 0 14px}.prep-meta{display:flex;gap:8px;justify-content:center;color:var(--text-dim);font-size:13px;margin-bottom:18px}.prep-extra{margin-bottom:18px}.prep-row{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.prep-status{margin-top:10px;font-size:13px;color:var(--text-dim)}.prep-status.ok{color:var(--accent-2)}.prep-status.err{color:var(--danger)}.start-actions{display:flex;flex-direction:column;gap:10px;align-items:center}.start-actions .btn{width:100%;max-width:240px}.card-wide{width:min(94vw,460px)}.select-grid{display:grid;grid-template-columns:1fr;gap:10px;margin:14px 0 18px;max-height:56vh;overflow-y:auto}.level-card{display:flex;align-items:center;gap:12px;padding:12px 14px;background:#ffffff0d;border:1px solid rgba(255,255,255,.08);border-radius:12px;cursor:pointer;text-align:left;font-family:inherit;color:var(--text);transition:background .15s,transform .08s,border-color .15s}.level-card:hover{background:#ffffff1a}.level-card:active{transform:scale(.98)}.level-card.cleared{border-color:#4ade8066}.lc-icon{font-size:26px;width:38px;text-align:center;flex:none}.lc-main{flex:1;min-width:0}.lc-name{font-weight:700;font-size:16px}.lc-meta{font-size:12px;color:var(--text-dim);margin-top:2px}.lc-badge{font-size:12px;color:var(--accent-2);white-space:nowrap;flex:none;text-align:right;line-height:1.4}.lc-num{font-size:12px;color:var(--text-dim);flex:none;width:18px}.big-emoji{font-size:56px;margin-bottom:6px}.result-title{font-size:28px;margin:4px 0 8px}.result-sub{color:var(--text-dim);font-size:15px;margin:0 0 20px}.btn{appearance:none;border:none;cursor:pointer;font-size:16px;font-weight:700;padding:13px 26px;border-radius:12px;transition:transform .08s,filter .2s;font-family:inherit}.btn:active{transform:scale(.96)}.btn-primary{background:linear-gradient(120deg,var(--accent),#ffb01f);color:#2a2008;box-shadow:0 8px 20px #ffb01f59}.btn-primary:hover{filter:brightness(1.05)}.btn-ghost{background:#ffffff14;color:var(--text);border:1px solid rgba(255,255,255,.12)}.btn-ghost:hover{background:#ffffff24}@media (max-width: 380px){.title{font-size:32px}.rules li{white-space:normal}}