.lp{display:grid;grid-template-columns:300px 1fr;gap:0;max-width:1180px;margin-inline:auto;min-height:70vh;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#fff;margin-block:18px 40px}.lp-side{background:var(--soft);border-inline-end:1px solid var(--line);padding:16px;display:flex;flex-direction:column;gap:12px}.lp-top{display:flex;align-items:center;justify-content:space-between;gap:8px}.lp-back{font-size:13px;color:var(--green-d);font-weight:600}.lp-lang{font-family:var(--mono);font-size:12px;font-weight:700;color:var(--green-d);border:1px solid var(--line);padding:3px 11px;border-radius:8px}.lp-lang:hover{background:#fff}.lp-prog-bar{height:9px;border-radius:999px;background:#e6e6df;overflow:hidden}.lp-prog-bar span{display:block;height:100%;width:0;border-radius:999px;background:linear-gradient(90deg,#0ba85c,#0d9488);transition:width .4s}.lp-prog-t{font-family:var(--mono);font-size:11px;color:var(--ink3);margin-top:6px}.lp-curr{display:grid;gap:10px;overflow:auto}.lpm{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff}.lpm-h{padding:9px 12px;font-family:var(--disp);font-weight:700;font-size:13px;background:#fff;border-bottom:1px solid var(--line)}.lpm-les{list-style:none;display:grid}.lpl{display:flex;align-items:center;gap:9px;padding:9px 12px;font-size:13px;cursor:pointer;border-top:1px solid #f0f0ea;color:var(--ink2)}.lpl:first-child{border-top:0}.lpl:hover{background:#fafaf7}.lpl.active{background:#0ba85c12;color:var(--ink);font-weight:600}.lpl .ck{width:18px;height:18px;flex:none;border-radius:50%;border:1.6px solid #c9c9c0;display:grid;place-items:center;font-size:10px;color:#fff}.lpl.done .ck{background:#0ba85c;border-color:#0ba85c}.lpl.locked{opacity:.55;cursor:not-allowed}.lpl.locked .ck{border-color:transparent;background:transparent;color:#9aa4ad;font-size:12px}.lpl .lt{flex:1;line-height:1.4}.lp-locked{text-align:center;padding:50px 22px;color:var(--ink2)}.lp-locked .lk-ic{font-size:46px;margin-bottom:10px}.lp-locked h2{font-size:1.3rem;margin:0 0 8px}.lp-locked p{max-width:42ch;margin:0 auto 16px;line-height:1.8}.lp-vctrl{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin:10px 0 4px;font-size:12px;color:var(--ink3)}.vrate{border:1px solid var(--line);background:#fff;border-radius:8px;padding:4px 10px;font-size:12px;font-weight:700;cursor:pointer;color:var(--ink2)}.vrate.on{background:var(--green);color:#fff;border-color:var(--green)}.lp-vnote{color:#be7a0a}.lp-btn:disabled{opacity:.55;cursor:not-allowed}.lp-btn.primary.ready{animation:lpready .5s ease}@keyframes lpready{0%{transform:scale(.96)}to{transform:scale(1)}}.lp-toast{position:fixed;inset-block-end:24px;inset-inline:0;margin:auto;width:max-content;max-width:90%;background:#11161d;color:#fff;padding:11px 20px;border-radius:12px;font-size:13.5px;font-weight:600;box-shadow:0 10px 30px -8px #00000080;opacity:0;transform:translateY(10px);transition:.25s;z-index:9999;pointer-events:none}.lp-toast.show{opacity:1;transform:translateY(0)}.lpl.exam{font-family:var(--disp);font-weight:700;color:#be123c}.lpl.exam .ck{border-color:#f59e0b}.lpl.exam.done .ck{background:#f59e0b;border-color:#f59e0b}.lp-main{padding:30px 34px}.lp-view{max-width:720px}.lp-view h2{font-family:var(--disp);font-size:clamp(20px,2.4vw,28px);line-height:1.35;margin:0 0 14px}.lp-view p{line-height:1.95;color:var(--ink2);font-size:16.5px;margin:0 0 14px}.lp-view b{color:var(--ink)}.lp-lt{margin-top:2px}.lp-embed{position:relative;width:100%;aspect-ratio:16/9;background:#0e1b2a;border-radius:12px;overflow:hidden;margin:6px 0 4px}.lp-embed iframe,.lp-embed video{position:absolute;inset:0;width:100%;height:100%;border:0;display:block}.lp-embed.pdf{aspect-ratio:auto;height:min(78vh,720px);background:#f3f3ee}.lp-dl{color:var(--green-d);font-weight:600;font-size:14px}.lp-iframe{width:100%;border:1px solid var(--line);border-radius:14px;min-height:200px;background:#fff;display:block;box-shadow:var(--sh);margin:6px 0}.lp-nav{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:30px;padding-top:20px;border-top:1px solid var(--line)}.lp-btn{border:1px solid var(--line);background:#fff;border-radius:10px;padding:11px 18px;font-weight:600;font-family:var(--sans);font-size:14px;cursor:pointer;color:var(--ink)}.lp-btn:hover{border-color:var(--green)}.lp-btn:disabled{opacity:.4;cursor:not-allowed}.lp-btn.primary{background:var(--green);color:#fff;border-color:var(--green)}.lp-btn.primary:hover{background:var(--green-d)}.lp-kick{font-family:var(--mono);font-size:12px;color:var(--green-d);margin-bottom:8px}.ex-q{border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin-bottom:16px}.ex-q .qh{font-family:var(--disp);font-weight:700;font-size:16px;margin-bottom:14px;line-height:1.5}.ex-opts{display:grid;gap:9px}.ex-opt{display:flex;align-items:center;gap:11px;padding:12px 14px;border:1px solid var(--line);border-radius:10px;cursor:pointer;font-size:14.5px;transition:.15s}.ex-opt:hover{border-color:var(--green);background:#0ba85c08}.ex-opt input{accent-color:var(--green);width:17px;height:17px}.ex-opt.correct{border-color:#0ba85c;background:#0ba85c14}.ex-opt.wrong{border-color:#f43f5e;background:#f43f5e12}.ex-why{margin-top:10px;font-size:13px;color:var(--ink2);background:var(--soft);border-radius:9px;padding:10px 12px;display:none}.ex-why.show{display:block}.ex-score{text-align:center;padding:26px;border-radius:16px;margin-bottom:20px}.ex-score.pass{background:linear-gradient(135deg,#eafaf0,#e6f7f0);border:1px solid #b7e6cb}.ex-score.fail{background:#fef2f2;border:1px solid #fbc5cb}.ex-score .big{font-family:var(--disp);font-size:42px;font-weight:800}.ex-score.pass .big{color:#067a42}.ex-score.fail .big{color:#be123c}.cert-cta{border:1px dashed #0ba85c;border-radius:16px;padding:24px;text-align:center;background:#0ba85c08;margin-top:18px}.cert-cta h3{font-family:var(--disp);font-size:20px;margin-bottom:8px}.cert-cta input{width:100%;max-width:340px;margin:14px auto 0;display:block;padding:13px 15px;border:1px solid var(--line);border-radius:11px;font-family:var(--sans);font-size:15px;text-align:center}.cert-note-lock{margin:10px auto 0;max-width:380px;font-size:12.5px;color:var(--ink3);line-height:1.7}.cert-rate{margin-top:12px}.cert-rate a{color:var(--green-d);font-weight:600;font-size:14px}.lp-empty{color:var(--ink3);padding:40px;text-align:center}@media(max-width:820px){.lp{grid-template-columns:1fr}.lp-side{border-inline-end:0;border-bottom:1px solid var(--line)}.lp-curr{max-height:240px}.lp-main{padding:22px}}