.modal-overlay{position:fixed;inset:0;background:#0009;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);z-index:3000;display:flex;align-items:center;justify-content:center;padding:20px;opacity:0;pointer-events:none;transition:opacity .25s}.modal-overlay.open{opacity:1;pointer-events:all}.wd-modal{background:var(--surface);border-radius:20px;max-width:520px;width:100%;max-height:90vh;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 30px 80px #0006,0 8px 24px #0000002e;animation:wdSlideUp .25s cubic-bezier(.22,.61,.36,1) both}@keyframes wdSlideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.wd-header{height:60px;padding:0 18px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);flex-shrink:0}.wd-header-left{display:flex;align-items:center;gap:10px;min-width:0;overflow:hidden}.wd-level-wrap{display:flex;align-items:center;flex-shrink:0}.wd-level-wrap span{font-size:12px;font-weight:700;letter-spacing:.05em;padding:5px 12px;border-radius:999px;background:var(--primary);color:var(--me-bach);white-space:nowrap;line-height:1}.wd-crumb{font-size:12px;color:var(--text2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.wd-close{width:32px;height:32px;border-radius:10px;border:none;background:transparent;color:var(--text2);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s,color .15s;flex-shrink:0}.wd-close:hover{background:var(--surface2);color:var(--text)}.wd-body{flex:1;overflow-y:auto;padding:20px 22px 24px;scrollbar-width:thin;min-height:360px}.wd-body::-webkit-scrollbar{width:6px}.wd-body::-webkit-scrollbar-thumb{background:var(--border);border-radius:999px}.wd-hero{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:flex-start;padding:8px 0 4px;min-height:120px}.wd-hero-text{min-width:0}.wd-hanzi{font-family:var(--font-hanzi);font-size:72px;font-weight:700;line-height:1;color:var(--text);letter-spacing:-.01em}.wd-hero-pinyin-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:10px}.wd-pinyin{font-size:24px;font-weight:400;color:var(--accent);letter-spacing:.01em}.wd-pos-chip{font-size:11px;font-weight:600;letter-spacing:.4px;color:var(--text3);background:var(--surface2);border:1px solid var(--border);border-radius:999px;padding:2px 9px;white-space:nowrap}.wd-waveform{display:none;align-items:flex-end;gap:3px;height:22px;margin-top:10px}.wd-modal--playing .wd-waveform{display:flex}.wd-waveform span{width:3px;border-radius:999px;background:var(--primary);animation:wdWave .8s ease-in-out infinite;height:30%}.wd-waveform span:nth-child(1){animation-delay:0s;height:35%}.wd-waveform span:nth-child(2){animation-delay:.07s;height:85%}.wd-waveform span:nth-child(3){animation-delay:.14s;height:55%}.wd-waveform span:nth-child(4){animation-delay:.21s;height:100%}.wd-waveform span:nth-child(5){animation-delay:.28s;height:45%}.wd-waveform span:nth-child(6){animation-delay:.35s;height:75%}.wd-waveform span:nth-child(7){animation-delay:.42s;height:30%}.wd-waveform span:nth-child(8){animation-delay:.49s;height:65%}@keyframes wdWave{0%,to{transform:scaleY(.35)}50%{transform:scaleY(1)}}.wd-hero-actions{display:grid;grid-template-columns:repeat(2,40px);grid-auto-rows:40px;gap:8px;padding-top:4px}.wd-icon-btn{width:40px;height:40px;border-radius:12px;border:1px solid var(--border);background:transparent;color:var(--text2);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s}.wd-icon-btn svg{width:16px;height:16px}.wd-icon-btn:hover{background:var(--surface2);color:var(--text)}.wd-icon-btn--accent{color:var(--primary);border-color:#dc26264d}.wd-icon-btn--accent:hover{background:var(--primary);color:var(--me-bach);border-color:var(--primary)}.wd-modal--playing .wd-icon-btn--accent{background:var(--primary);color:var(--me-bach);border-color:var(--primary);box-shadow:0 4px 14px #dc262659}.wd-stroke-container{background:var(--surface2);border:1px solid var(--border);border-radius:14px;padding:16px;margin-top:18px;display:flex;flex-direction:column;align-items:center;gap:10px}.wd-stroke-btns{display:flex;gap:8px}.wd-stroke-btn{background:var(--primary);color:var(--me-bach);border:none;border-radius:10px;padding:8px 14px;font-size:13px;font-weight:600;cursor:pointer;transition:opacity .15s,transform .15s;font-family:var(--font-ui)}.wd-stroke-btn:hover{opacity:.85;transform:translateY(-1px)}.wd-stroke-btn--outline{background:transparent;border:1.5px solid var(--primary);color:var(--primary)}.wd-stroke-btn--outline:hover{background:var(--primary);color:var(--me-bach)}.wd-section{margin-top:22px}.wd-section-title{font-size:11px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--text3);margin-bottom:10px}.wd-meanings{display:flex;flex-direction:column;gap:8px}.wd-meaning-row{display:flex;align-items:baseline;gap:10px;padding:3px 0}.wd-lang-badge{font-size:11px;font-weight:700;letter-spacing:.04em;padding:3px 9px;border-radius:6px;color:var(--me-bach);flex-shrink:0;line-height:1.5}.wd-lang-badge--vi{background:var(--hoang-kim)}.wd-lang-badge--en{background:var(--info)}.wd-meaning-text{font-size:17px;font-weight:500;color:var(--text);line-height:1.4}.wd-meaning-text--en{font-size:15px;font-weight:400;color:var(--text2)}.wd-example-section{margin-top:22px}.wd-example-card{background:var(--surface2);border:1px solid var(--border);border-radius:12px;padding:14px 16px;display:flex;flex-direction:column;gap:4px}.wd-ex-zh{font-family:var(--font-hanzi);font-size:18px;color:var(--text);line-height:1.5;margin-bottom:2px}.wd-ex-py{font-size:13px;color:var(--accent)}.wd-ex-vi{font-size:13px;color:var(--text2)}.wd-ex-en{font-size:12px;color:var(--text3);font-style:italic}.wd-example-card--empty{align-items:center;text-align:center;background:var(--surface);border-style:dashed;padding:22px 16px}.wd-example-card--empty .wd-ex-zh{font-family:inherit;font-size:14px;color:var(--text3);margin-bottom:0}.wd-example-card--empty .wd-ex-py,.wd-example-card--empty .wd-ex-vi,.wd-example-card--empty .wd-ex-en{display:none}.wd-footer{height:68px;padding:0 18px;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--surface);flex-shrink:0}.wd-footer-right{display:flex;gap:8px}.wd-btn{font-family:var(--font-ui);font-size:14px;font-weight:600;padding:9px 16px;border-radius:10px;border:1px solid transparent;cursor:pointer;display:inline-flex;align-items:center;gap:7px;transition:all .15s;letter-spacing:.005em;white-space:nowrap}.wd-btn svg{width:14px;height:14px;flex-shrink:0}.wd-btn--ghost{color:var(--text2);background:transparent;border-color:transparent}.wd-btn--ghost:hover{background:var(--surface2);color:var(--text)}.wd-btn--outline{color:var(--primary);border-color:#dc262666;background:transparent}.wd-btn--outline:hover{background:#dc262612;border-color:var(--primary)}.wd-btn--primary{color:var(--me-bach);background:var(--primary);box-shadow:0 4px 0 var(--chau-hong-2)}.wd-btn--primary:hover{transform:translateY(-1px);box-shadow:0 7px 20px #dc262666}[data-theme=dark] .wd-level-wrap span{box-shadow:0 0 0 1px #ef44444d,0 4px 12px #dc26264d}[data-theme=dark] .wd-hanzi{text-shadow:0 0 24px rgba(245,158,11,.12)}[data-theme=dark] .wd-btn--outline{border-color:color-mix(in srgb,var(--primary) 45%,transparent);color:color-mix(in srgb,var(--primary) 65%,var(--me-bach))}[data-theme=dark] .wd-btn--outline:hover{background:var(--primary-soft);color:color-mix(in srgb,var(--primary) 80%,var(--me-bach))}@media(max-width:540px){.modal-overlay{align-items:flex-end;padding:0}.wd-modal{border-radius:20px 20px 0 0;max-height:92vh}.wd-hanzi{font-size:58px}.wd-pinyin{font-size:20px}.wd-body{padding:16px 18px 20px}.wd-footer{height:auto;padding:12px 18px 20px;flex-wrap:wrap}.wd-footer-right{flex:1}.wd-btn--primary{flex:1;justify-content:center}}.w-full{width:100%}.sr-xp{font-size:22px;font-weight:700;color:var(--accent);text-align:center;margin:8px 0}.deck-list-view{display:flex;flex-direction:column;gap:2px}.hsk-list-row{display:flex;align-items:center;gap:12px;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:12px 16px;transition:.2s;margin-bottom:2px}.hsk-list-row:hover{border-color:var(--primary);background:var(--surface2)}.hsk-expand-btn{background:var(--surface2);border:1px solid var(--border);border-radius:8px;width:28px;height:28px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:background var(--d-base) var(--ease-out),color var(--d-base) var(--ease-out),transform var(--d-base) var(--ease-out);flex-shrink:0;color:var(--text2)}.hsk-expand-btn:hover{background:var(--primary);color:var(--me-bach);border-color:transparent}.hsk-expand-btn.expanded{transform:rotate(90deg)}.hsk-row-icon{font-size:22px;flex-shrink:0}.hsk-row-dot{width:30px;height:30px;border-radius:50%;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:var(--me-bach)}.hsk-row-info{flex:1}.hsk-row-title{font-size:15px;font-weight:700;color:var(--text)}.hsk-row-sub{font-size:12px;color:var(--text2);margin-top:2px}.hsk-row-badges{display:flex;gap:4px;flex-wrap:wrap}.btn-learn-deck{background:var(--primary);color:var(--me-bach);border:none;border-radius:8px;padding:7px 14px;font-size:13px;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:5px;transition:opacity var(--d-base) var(--ease-out),transform var(--d-fast) var(--ease-out);white-space:nowrap;flex-shrink:0;font-family:var(--font-ui)}.btn-learn-deck:hover{opacity:.85;transform:translateY(-1px)}.hsk-sub-row{align-items:center;gap:10px;padding:9px 16px 9px 40px;background:var(--surface2);border:1px solid var(--border);border-radius:10px;margin-bottom:2px;transition:.2s}.hsk-sub-row:hover{border-color:var(--accent)}.hsk-sub-indent{color:var(--text3);font-size:14px;flex-shrink:0}.hsk-sub-icon{font-size:16px;flex-shrink:0}.hsk-sub-name{font-size:14px;font-weight:600;color:var(--text);flex:1}.hsk-sub-count{font-size:12px;color:var(--text2);white-space:nowrap}.hsk-sub-badges{display:flex;gap:4px}.btn-learn-sub{background:var(--surface);border:1px solid var(--primary);color:var(--primary);border-radius:8px;padding:5px 12px;font-size:12px;font-weight:600;display:inline-flex;align-items:center;gap:4px;cursor:pointer;transition:background var(--d-base) var(--ease-out),color var(--d-base) var(--ease-out);white-space:nowrap;font-family:var(--font-ui)}.btn-learn-sub:hover{background:var(--primary);color:var(--me-bach)}.srs-badge{font-size:11px;font-weight:600;border-radius:6px;padding:2px 7px;white-space:nowrap}.srs-new{background:var(--info-bg);color:var(--info)}.srs-due{background:var(--status-learning-bg);color:var(--status-learning)}.srs-relearn{background:var(--danger-bg);color:var(--danger)}.srs-done{background:var(--status-mastered-bg);color:var(--status-mastered)}.deck-srs-badges{display:flex;gap:4px;flex-wrap:wrap;margin:6px 0 2px}.deck-srs-stats{gap:8px;flex-wrap:wrap;padding:10px 0;margin-bottom:4px}.srs-stat{font-size:13px;font-weight:600;padding:5px 12px;border-radius:8px;white-space:nowrap;display:inline-flex;align-items:center;gap:5px}.srs-stat-dot{width:8px;height:8px;border-radius:50%;background:currentColor;flex-shrink:0}.srs-stat.srs-new{background:var(--info-bg);color:var(--info)}.srs-stat.srs-due{background:var(--status-learning-bg);color:var(--status-learning)}.srs-stat.srs-relearn{background:var(--danger-bg);color:var(--danger)}.xp-bar-wrap{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:14px 18px;margin-bottom:16px}.xp-bar-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.xp-label{font-size:14px;font-weight:700;color:var(--accent)}.xp-level-label{font-size:12px;color:var(--text2)}.xp-bar-track{height:8px;background:var(--surface2);border-radius:99px;overflow:hidden}.xp-bar-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:99px;transition:width .6s ease}.xp-bar-footer{font-size:12px;color:var(--text2);margin-top:6px}.streak-calendar{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:14px 18px;margin-bottom:20px}.sc-title{font-size:13px;font-weight:600;color:var(--text2);margin-bottom:10px}.sc-days{display:flex;gap:6px;justify-content:space-between}.sc-day{display:flex;flex-direction:column;align-items:center;gap:4px;flex:1;padding:8px 4px;border-radius:10px;background:var(--surface2);border:1px solid var(--border);transition:.2s}.sc-day.active{background:color-mix(in srgb,var(--hsk-8) 12%,transparent);border-color:var(--hsk-8)}.sc-day.today{border-color:var(--primary);box-shadow:0 0 0 2px rgba(var(--primary-rgb),.2)}.sc-dot{font-size:18px;line-height:1}.sc-label{font-size:10px;color:var(--text2);font-weight:600}.sc-day.active .sc-label{color:var(--hsk-8)}.wd-confusion-section{margin-top:18px}.wd-confusion-card{background:color-mix(in srgb,var(--accent) 7%,var(--surface2));border:1px solid color-mix(in srgb,var(--accent) 30%,var(--border));border-left:3px solid var(--accent);border-radius:12px;padding:13px 15px;display:flex;flex-direction:column;gap:8px}.wd-conf-note{font-size:13px;color:var(--text);line-height:1.55;margin:0}.wd-conf-ex{display:flex;flex-direction:column;gap:2px;padding-top:8px;border-top:1px dashed var(--border)}.wd-conf-ex-zh{font-family:var(--font-hanzi);font-size:15px;color:var(--text)}.wd-conf-ex-py{font-size:12px;color:var(--accent)}.wd-conf-ex-vi{font-size:12px;color:var(--text2)}