/* LearnUp 练习引擎样式 — 配合 lu-practice.js */
.lp{--pa:var(--lu-a,#8A5A00);--ps:#FBF4E6;font-size:1rem}
.lp .lp-g{display:inline-block;background:var(--pa);color:#fff;border-radius:8px;padding:1px 10px;font-weight:900;font-size:.85rem;margin-right:6px}
.lp .lp-mk{float:right;color:#6B7280;font-size:.85rem;font-weight:700}
.lp .lp-q{font-weight:800;font-size:1.05rem;margin:6px 0 8px;line-height:1.5}
.lp .lp-box{border:1.5px solid #D6D3D1;border-radius:10px;padding:6px 12px;margin:6px 0;background:#fff;font-size:.95rem}
.lp .lp-roman{margin:4px 0 8px;padding-left:4px;font-size:.95rem;line-height:1.6}
.lp .lp-opts-g{display:grid;gap:6px}
.lp .lp-opt{display:flex;gap:10px;align-items:flex-start;width:100%;min-height:44px;border:2px solid #E7E5E4;background:#fff;border-radius:12px;padding:8px 12px;font:inherit;font-weight:700;text-align:left;cursor:pointer;color:inherit}
.lp .lp-opt b{color:var(--pa)}
.lp .lp-opt.right{border-color:#15803D;background:#ECF8F0}
.lp .lp-opt.wrong{border-color:#DC2626;background:#FEF2F2;opacity:.8}
.lp .lp-fb{margin-top:8px;font-weight:800;min-height:1.4em}
.lp .lp-fb.ok{color:#15803D}.lp .lp-fb.no{color:#B91C1C}
.lp .lp-row{display:flex;gap:8px;align-items:center;border-bottom:1px solid #EEE;padding:6px 0;font-size:.93rem;line-height:1.45}
.lp .lp-row .lp-n{font-weight:900;color:var(--pa);min-width:1.6em}
.lp .lp-row .lp-t{flex:1}
.lp .lp-tfb{width:40px;height:36px;border-radius:10px;border:2px solid #E7E5E4;background:#fff;font-size:1.1rem;font-weight:900;cursor:pointer}
.lp .lp-tfb.on{border-color:var(--pa);background:var(--ps)}
.lp .lp-row.right{background:#F0FDF4}.lp .lp-row.wrong{background:#FEF2F2}
.lp .lp-ans{font-size:.8rem;color:#B91C1C;font-weight:800;white-space:nowrap}
.lp .lp-circle{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;padding:10px;border:2px dashed #D6D3D1;border-radius:50% / 30%;margin:6px 0}
.lp .lp-center{width:100%;text-align:center;font-weight:900;color:var(--pa)}
.lp .lp-chip{border:2px solid #E7E5E4;background:#fff;border-radius:999px;padding:6px 12px;font:inherit;font-size:.92rem;font-weight:700;cursor:pointer;color:inherit}
.lp .lp-chip.on{border-color:var(--pa);background:var(--ps);box-shadow:0 0 0 3px var(--ps)}
.lp .lp-chip.right{border-color:#15803D;background:#ECF8F0}.lp .lp-chip.wrong{border-color:#DC2626;background:#FEF2F2}.lp .lp-chip.miss{border-style:dashed;border-color:#15803D}
.lp .lp-bank{display:flex;flex-wrap:wrap;gap:6px;background:var(--ps);border-radius:12px;padding:8px;margin:4px 0 8px}
.lp .lp-word{border:1.5px solid #D6D3D1;background:#fff;border-radius:8px;padding:4px 10px;font:inherit;font-size:.92rem;font-weight:700;cursor:pointer;color:inherit}
.lp .lp-word.used{opacity:.35;text-decoration:line-through}
.lp .lp-fl{margin:4px 0;font-size:.95rem;line-height:1.9}
.lp .lp-blank{display:inline-block;min-width:5em;border-bottom:2px solid var(--pa);text-align:center;font-weight:800;cursor:pointer;padding:0 4px;color:var(--pa)}
.lp .lp-blank.act{background:var(--ps);border-radius:6px}
.lp .lp-blank.right{color:#15803D;border-color:#15803D}.lp .lp-blank.wrong{color:#B91C1C;border-color:#B91C1C;text-decoration:line-through}
.lp .lp-fix{color:#15803D;font-weight:900;margin-left:4px}
.lp .lp-match{display:grid;grid-template-columns:1fr 1.25fr;gap:8px;align-items:start}
.lp .lp-l,.lp .lp-r{border:2px solid #E7E5E4;border-radius:10px;padding:6px 8px;background:#fff;cursor:pointer;font-size:.88rem;line-height:1.4;margin-bottom:6px}
.lp .lp-l b,.lp .lp-r b{color:var(--pa)}
.lp .lp-l.act{border-color:var(--pa);background:var(--ps)}
.lp .lp-tag{display:block;font-weight:900;color:var(--pa);font-size:.82rem}
.lp .lp-l.right{border-color:#15803D;background:#F0FDF4}.lp .lp-l.wrong{border-color:#DC2626;background:#FEF2F2}
.lp .lp-l.wrong .lp-tag{color:#15803D}
.lp .lp-hint{font-size:.82rem;color:#6B7280;margin:2px 0 6px}
.lp .lp-part{border-top:1px dashed #E7E5E4;padding-top:6px;margin-top:6px}
.lp .lp-part .lp-pq{font-weight:800;font-size:.95rem;line-height:1.5}
.lp textarea{width:100%;min-height:52px;border:2px solid #E7E5E4;border-radius:10px;padding:6px 10px;font:inherit;font-size:.95rem;margin-top:4px;resize:vertical}
.lp .lp-pfb{font-weight:800;color:var(--pa);font-size:.85rem}
.lp .lp-model{background:#F0FDF4;border-radius:10px;padding:6px 10px;margin-top:4px;font-size:.88rem}
.lp .lp-model ul{margin:2px 0;padding-left:1.2em}
.lp .lp-pt.hit{color:#15803D;font-weight:900}.lp .lp-pt.hit::after{content:' ✓'}
.lp .lp-photo{font-size:.78rem;color:#6B7280;margin-top:4px}
.lp .lp-choose{line-height:2}
.lp .lp-opts{display:inline-flex;gap:4px;margin:0 2px}
.lp .lp-c{border:1.5px solid #D6D3D1;border-radius:999px;background:#fff;padding:0 10px;font:inherit;font-size:.9rem;cursor:pointer;color:inherit}
.lp .lp-c.on{border-color:var(--pa);background:var(--ps);font-weight:900}
.lp .lp-opts.right .lp-c.on{border-color:#15803D;background:#ECF8F0}.lp .lp-opts.wrong .lp-c.on{border-color:#DC2626;background:#FEF2F2}
.lp .lp-act{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap}
.lp .lp-check,.lp .lp-again{border-radius:999px;padding:8px 18px;font:inherit;font-weight:800;cursor:pointer;border:2px solid var(--pa)}
.lp .lp-check{background:var(--pa);color:#fff}.lp .lp-check:disabled{opacity:.4}
.lp .lp-again{background:#fff;color:var(--pa)}
.lp-total{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:10px 0}
.lp-total div{background:#fff;border-radius:12px;padding:10px;text-align:center;box-shadow:0 2px 8px rgba(0,0,0,.06)}
.lp-total b{display:block;color:var(--lu-a,#8A5A00)}.lp-total span{font-size:1.3rem;font-weight:900}
.lp-total p{grid-column:1/-1;margin:0;text-align:center;color:#6B7280;font-size:.9rem}
/* 2026-10-08 手机一屏：是非题按钮叠放、卡片与行距收紧 */
.lp .lp-tfbs{display:flex;gap:6px;flex:none}
.lp .lp-ans{display:block}
.lp .lp-ans:empty{display:none}
@media (max-width:600px){
 .lp.v2-content{padding:10px 12px!important}
 .lp .lp-q{font-size:.98rem;margin:2px 0 4px}
 .lp .lp-hint{font-size:.76rem;margin:0 0 4px}
 .lp .lp-row{font-size:.86rem;padding:4px 0;gap:6px;line-height:1.38}
 .lp .lp-tfbs{flex-direction:column;gap:4px}
 .lp .lp-tfb{width:36px;height:30px;font-size:1rem}
 .lp .lp-bank{gap:5px;padding:6px;margin:2px 0 4px}
 .lp .lp-word{padding:3px 8px;font-size:.86rem}
 .lp .lp-fl{font-size:.88rem;line-height:1.6;margin:3px 0}
 .lp .lp-blank{min-width:4em}
 .lp .lp-l,.lp .lp-r{font-size:.82rem;padding:5px 7px;margin-bottom:5px}
 .lp .lp-act{margin-top:6px}
 .lp .lp-check,.lp .lp-again{padding:6px 16px}
 .lp textarea{min-height:44px}
}
.lp .lp-see{border:0;background:none;color:var(--pa);font:inherit;font-weight:900;text-decoration:underline;cursor:pointer;padding:0 2px}
.lp-sheet{position:fixed;inset:0;z-index:60;background:#0006;display:flex;align-items:flex-end;justify-content:center}
.lp-sheet[hidden]{display:none}
.lp-sbox{width:min(720px,100%);max-height:75vh;overflow:auto;background:#fff;border-radius:20px 20px 0 0;padding:16px 18px calc(16px + env(safe-area-inset-bottom));font-size:1rem;line-height:1.7}
.lp-sbox ul{padding-left:1.2em;margin:4px 0 8px}
.lp-sbox .lp-pt.hit{color:#15803D;font-weight:900}.lp-sbox .lp-pt.hit::after{content:' ✓ 你答到了'}
.lp-sclose{margin-top:10px;border-radius:999px;padding:10px 20px;font:inherit;font-weight:800;border:2px solid var(--lu-a,#8A5A00);background:#fff;color:var(--lu-a,#8A5A00);min-height:46px}
@media(min-width:900px){.lp-sheet{align-items:center}.lp-sbox{border-radius:20px}}
@media (max-width:600px){.lp .lp-part{padding-top:3px;margin-top:4px}.lp textarea{min-height:40px;margin-top:2px;padding:5px 8px}.lp .lp-part .lp-pq{font-size:.9rem}.lp .lp-photo{margin-top:2px}}
/* 2026-10-08 检查后不撑高：是非题用绿框标出正确按钮；配对的结果标签不另起一行 */
.lp .lp-tfb.should{border-color:#15803D;background:#ECF8F0;box-shadow:0 0 0 2px #BBF7D0}
.lp .lp-tag{display:inline;margin-left:4px}
.lp .lp-blank.fixed{color:#15803D;border-bottom:2px dashed #DC2626}
.lp .lp-match.wideL{grid-template-columns:1.35fr 1fr}
@media (max-width:600px){.lp .lp-blank.fixed,.lp .lp-blank.right{font-size:.8rem}.lp .lp-fl{line-height:1.55}.lp .lp-row{padding:3px 0}}
.lp .lp-q{padding-right:64px}