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0}.lesson-type-toggle{display:flex;gap:0;border-radius:8px;overflow:hidden;border:1px solid var(--border)}.lesson-type-btn{flex:1;padding:7px 14px;font-size:.9rem;background:var(--panel);color:var(--muted);border:none;cursor:pointer;transition:background .12s,color .12s}.lesson-type-btn:first-child{border-right:1px solid var(--border)}.lesson-type-btn.active{background:var(--green);color:#000;font-weight:700}.vp-listen-btn{display:block;margin:12px auto;padding:14px 32px;border-radius:50px;background:var(--green);color:#000;font-weight:700;font-size:1rem;border:none;cursor:pointer;transition:filter .12s}.vp-listen-btn:hover:not(:disabled){filter:brightness(1.1)}.vp-listen-btn.playing{opacity:.7;cursor:default}.vp-listen-btn:disabled{opacity:.6;cursor:default}.vp-listen-reveal{display:flex;flex-direction:column;align-items:center;gap:4px;margin-top:8px}.vp-listen-opt-btn{padding:14px 12px;text-align:center;background:var(--panel);border:1.5px solid var(--border);border-radius:14px;cursor:pointer;font-size:.95rem;transition:border-color .12s,background .12s}.vp-listen-opt-btn:hover:not(:disabled){border-color:#475569;background:#1e293b}.vp-listen-opt-btn:disabled{cursor:default}.vp-listen-opt-btn.vp-mc-correct{border-color:var(--green);background:#22c55e1a}.vp-listen-opt-btn.vp-mc-wrong{border-color:#ef4444;background:#ef44441a}.vp-summary-breakdown{display:flex;gap:20px;margin:4px 0 12px;justify-content:center}.vp-tile-answer{display:flex;gap:10px;justify-content:center;margin:16px 0 8px}.vp-tile-slot{width:56px;height:64px;border:2px dashed var(--border);border-radius:12px;background:var(--panel);font-size:1.8rem;font-weight:700;display:grid;place-items:center;cursor:pointer;transition:border-color .12s,background .12s}.vp-tile-slot.filled{border-style:solid;border-color:#475569;cursor:pointer}.vp-tile-slot.filled:hover:not(:disabled){border-color:#94a3b8}.vp-tile-slot.correct{border-color:var(--green);background:#22c55e1a}.vp-tile-slot.wrong{border-color:#ef4444;background:#ef44441a}.vp-tile-slot:disabled{cursor:default}.vp-tile-bank{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin:12px 0}.vp-tile{width:56px;height:64px;border:2px solid #334155;border-radius:12px;background:#1e293b;font-size:1.8rem;font-weight:700;display:grid;place-items:center;cursor:pointer;transition:border-color .12s,opacity .12s}.vp-tile:hover:not(:disabled):not(.used){border-color:var(--green)}.vp-tile.used{opacity:.25;cursor:default}.vp-tile:disabled{cursor:default}.todays-words-panel{background:#1e293b;border:1px solid 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#334155;border-radius:16px;padding:24px;cursor:pointer;text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px}.srs-hanzi{font-size:3rem;font-weight:700}.srs-pinyin{font-size:1rem}.srs-tap-hint{margin-top:8px}.srs-card-back{margin-top:12px}.srs-gloss{font-size:1.15rem;color:#e2e8f0}.srs-buttons{display:flex;gap:12px;width:100%;max-width:360px}.srs-btn{flex:1;padding:12px 0;border-radius:10px;font-size:.95rem;font-weight:600;border:none;cursor:pointer;transition:opacity 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a{color:#94a3b8}.vp-trace-char{font-size:2.5rem;font-weight:700;margin-top:12px}.vp-trace-done{display:flex;flex-direction:column;align-items:center;gap:8px}.word-popup-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}.wb-banner{display:flex;align-items:center;justify-content:space-between;background:linear-gradient(135deg,#0f2027,#1a3a1a);border:1px solid var(--green);border-radius:16px;padding:16px 18px;margin-bottom:18px;text-decoration:none;color:inherit;transition:border-color .15s}.wb-banner:hover{border-color:#4ade80;text-decoration:none}.wb-banner-left{display:flex;align-items:center;gap:14px}.wb-banner-icon{font-size:1.8rem;line-height:1}.wb-banner-title{font-weight:700;font-size:1.1rem;color:var(--green)}.wb-banner-sub{margin-top:2px}.wb-banner-right{display:flex;align-items:center;gap:10px}.wb-banner-cta{font-weight:600;color:var(--green);white-space:nowrap}.wb-banner-dismiss{background:none;border:none;color:var(--muted);cursor:pointer;padding:4px 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24px;margin-top:8px}.wb-insight-header{text-align:center}.wb-insight-round{font-size:.82rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:6px}.wb-insight-score{font-size:3rem;font-weight:800;line-height:1}.wb-insight-pct{font-size:.9rem;margin-top:4px}.wb-insight-section-label{font-size:.76rem;font-weight:600;text-transform:uppercase;letter-spacing:.07em;margin-bottom:8px}.wb-insight-section-label.strong{color:#4ade80}.wb-insight-section-label.gap{color:#f87171}.wb-insight-tags{display:flex;flex-wrap:wrap;gap:6px}.wb-tag{padding:4px 10px;border-radius:8px;font-size:.82rem;font-weight:600}.wb-tag-strong{background:#22c55e20;color:#4ade80;border:1px solid #22c55e40}.wb-tag-gap{background:#ef444420;color:#f87171;border:1px solid #ef444440}.wb-insight-actions{display:flex;gap:10px;flex-direction:column}@media (min-width: 480px){.wb-insight-actions{flex-direction:row}}.wb-practice-btn{background:linear-gradient(135deg,#7c3aed20,#4f46e520);border:1px solid #7c3aed60;color:#a78bfa;border-radius:10px;padding:9px 16px;cursor:pointer;font-weight:600;font-size:.9rem;transition:background .15s,border-color .15s}.wb-practice-btn:hover{background:linear-gradient(135deg,#7c3aed30,#4f46e530);border-color:#a78bfa}.vp-container{display:flex;flex-direction:column;gap:16px;padding:4px 0 24px}.vp-generating{display:flex;flex-direction:column;align-items:center;gap:16px;padding:56px 0}.vp-spinner{width:36px;height:36px;border:3px solid rgba(148,163,184,.2);border-top-color:#a78bfa;border-radius:50%;animation:vp-spin .8s linear infinite}@keyframes vp-spin{to{transform:rotate(360deg)}}.vp-topic-hint{display:flex;align-items:center;flex-wrap:wrap;gap:8px;background:#7c3aed14;border:1px solid rgba(124,58,237,.25);border-radius:12px;padding:10px 14px}.vp-topic-label{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:#a78bfa}.vp-topic-text{flex:1;font-size:.88rem;color:#e5e7eb}.vp-difficulty-badge{font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;background:#94a3b81a;border:1px solid rgba(148,163,184,.2);border-radius:6px;padding:2px 7px;color:var(--muted)}.vp-toggles{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.vp-toggle{background:none;border:1px solid var(--border);color:var(--muted);border-radius:8px;padding:4px 12px;font-size:.8rem;cursor:pointer;transition:background .12s,border-color .12s,color .12s}.vp-toggle-on{background:#a78bfa26;border-color:#a78bfa;color:#a78bfa}.vp-anchor-legend{display:flex;align-items:center;gap:5px;font-size:.75rem;color:var(--muted);margin-left:auto}.vp-anchor-swatch{display:inline-block;width:18px;height:2px;background:#a78bfa;border-radius:2px}.vp-lines{display:flex;flex-direction:column;gap:12px;-webkit-user-select:text;user-select:text}.vp-lines *{-webkit-user-select:text;user-select:text}.vp-line{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:12px 14px}.vp-line-learner{background:#0f172a99;border-color:#94a3b84d;margin-left:12px}.vp-line-target{border-color:#a78bfa66}.vp-line-speaker{font-size:.67rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:5px}.vp-line-hanzi{font-size:1.3rem;line-height:1.5;letter-spacing:.02em}.vp-line-pinyin{font-size:.8rem;color:var(--muted);margin-top:3px}.vp-line-english{font-size:.82rem;color:var(--muted);margin-top:2px;font-style:italic}.vp-anchor-word{border-bottom:2px solid rgba(167,139,250,.6);padding-bottom:1px}.vp-difficulty-row{display:flex;gap:8px;justify-content:center}.vp-regen-btn{background:none;border:1px solid var(--border);color:var(--muted);border-radius:10px;padding:7px 16px;font-size:.85rem;cursor:pointer;transition:background .12s,border-color .12s,color .12s}.vp-regen-btn:hover{background:#94a3b814;border-color:#94a3b866;color:#e5e7eb}.vp-actions{display:flex;gap:10px;justify-content:center}.vp-line-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:4px;min-height:20px}.vp-play-btn{background:none;border:1px solid var(--border);color:var(--muted);border-radius:6px;width:26px;height:26px;cursor:pointer;font-size:.7rem;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:color .12s,border-color .12s}.vp-play-btn:hover{color:#e5e7eb;border-color:#94a3b880}.vp-play-btn-active{color:#a78bfa;border-color:#a78bfa}.vp-select-hint{margin:-4px 0 6px;text-align:center}.vp-tooltip{position:absolute;transform:translate(-50%,-100%);background:#1e293b;border:1px solid #334155;border-radius:8px;padding:6px 10px;white-space:nowrap;z-index:200;box-shadow:0 4px 16px #00000080;pointer-events:all}.vp-tooltip:after{content:"";position:absolute;top:100%;left:50%;transform:translate(-50%);border:5px solid transparent;border-top-color:#334155}.vp-tooltip-btn{background:none;border:none;cursor:pointer;color:#a78bfa;font-size:.82rem;font-weight:600;padding:0}.vp-tooltip-btn:hover{color:#c4b5fd}.vp-tooltip-msg{font-size:.82rem;color:var(--muted)}.vp-tooltip-saved{color:#4ade80}.vp-tooltip-error{color:#f87171}