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var(--ease-out)}.ls-tts-btn:hover{transform:scale(1.06)}.ls-tts-btn:active{transform:scale(.96)}.ls-tts-btn.playing{animation:ls-pulse .8s ease-in-out infinite alternate}.ls-tts-label{font-size:12px;color:var(--text3)}@keyframes ls-pulse{0%{box-shadow:0 0 0 0 var(--primary-soft)}to{box-shadow:0 0 0 10px transparent}}.dd-header{display:flex;align-items:center;gap:14px;margin-bottom:12px}.dd-header-info{flex:1}.dd-header-info h2{margin:0;font-size:20px;font-weight:800}.dd-meta-row{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text2);margin-top:2px}.dd-dot{color:var(--text3)}.preview-card-wrap{position:relative;margin:14px 0;display:flex;align-items:center;justify-content:center;gap:12px}.preview-card{flex:1;min-height:220px;max-width:600px;background:var(--surface);border-radius:18px;border:1.5px solid var(--border);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:32px 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var(--ease-out);color:var(--text2);flex-shrink:0}.preview-nav:hover{background:var(--primary);color:var(--me-bach);border-color:transparent}.preview-counter{position:absolute;bottom:-28px;left:50%;transform:translate(-50%);font-size:13px;color:var(--text2);font-weight:600;background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:3px 12px}.kb-hint{display:flex;align-items:center;gap:6px;flex-wrap:wrap;font-size:12px;color:var(--text3);margin:36px 0 14px;padding:8px 12px;background:var(--surface2);border-radius:8px}.kb-hint kbd{background:var(--surface);border:1px solid var(--border);border-radius:5px;padding:2px 6px;font-size:11px;font-family:monospace;color:var(--text2)}.mode-chips-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}.mode-chip{background:var(--surface);border:1.5px solid var(--border);border-radius:22px;padding:8px 18px;font-size:14px;font-weight:600;cursor:pointer;transition:background var(--d-base) var(--ease-out),color var(--d-base) var(--ease-out),border-color var(--d-base) var(--ease-out);color:var(--text2);font-family:var(--font-ui);display:flex;align-items:center;gap:6px}.mode-chip.active{background:var(--primary-soft);color:var(--primary);border-color:var(--primary)}.mode-chip:hover:not(.active):not(.disabled){border-color:var(--primary);color:var(--primary)}.mode-chip.disabled{opacity:.45;cursor:not-allowed}.mode-chip small{font-size:10px;font-weight:400;opacity:.7}.btn-study-now{width:100%;max-width:400px;margin:0 auto 24px;display:flex}.dd-word-list-header{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--text2);margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid var(--border)}.dd-wl-count{font-size:12px;color:var(--text3)}.dd-word-list{display:flex;flex-direction:column;gap:4px}.ddwl-row{display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:10px;background:var(--surface);border:1px solid transparent;cursor:pointer;transition:.15s}.ddwl-row:hover{border-color:var(--primary);background:var(--surface2)}.ddwl-num{font-size:11px;color:var(--text3);min-width:22px;text-align:right}.ddwl-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0;background:var(--status-new)}.ddwl-dot--new{background:var(--status-new)}.ddwl-dot--learning{background:var(--status-learning)}.ddwl-dot--due{background:var(--status-due)}.ddwl-dot--mastered{background:var(--status-mastered)}.ddwl-hanzi{font-size:22px;min-width:44px;text-align:center;font-family:var(--font-hanzi)}.ddwl-info{flex:1}.ddwl-pinyin{font-size:13px;color:var(--hoang-kim);font-weight:500}.ddwl-meaning{font-size:13px;color:var(--text2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ddwl-tts{background:none;border:none;cursor:pointer;color:var(--text3);display:inline-flex;align-items:center;justify-content:center;opacity:.7;transition:opacity var(--d-base) var(--ease-out),color var(--d-base) var(--ease-out),transform var(--d-fast) var(--ease-out);padding:4px}.ddwl-tts:hover{opacity:1;color:var(--hoang-kim);transform:scale(1.15)}#learnHub{padding:4px 0 32px}.lh-hero{margin-bottom:20px}.lh-hero-label{font-size:var(--t-label);font-weight:600;text-transform:uppercase;letter-spacing:var(--tracking-eyebrow);opacity:.85;margin-bottom:10px}.lh-hero-row{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.lh-hero-info{flex:1;min-width:0}.lh-cont-name{font-size:var(--t-h2);font-weight:700;margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lh-cont-meta{font-size:var(--t-small);opacity:.9;margin-bottom:8px}.lh-hero .lh-cont-bar-wrap{background:#ffffff4d}.lh-cont-bar{background:var(--me-bach)}.lh-cont-btn.btn-primary{background:var(--me-bach);color:var(--primary);box-shadow:0 4px #0000002e;flex-shrink:0}.lh-cont-btn.btn-primary:active{box-shadow:0 2px #0000002e}.lh-section{margin-bottom:24px}.lh-section-label{font-size:var(--t-label);font-weight:600;color:var(--text3);text-transform:uppercase;letter-spacing:var(--tracking-eyebrow);margin-bottom:12px}.lh-milestone{width:100%;display:flex;align-items:center;gap:12px;margin-bottom:12px;padding:12px 14px;border:1px solid color-mix(in srgb,var(--hoang-kim) 45%,var(--border));border-left:4px solid var(--hoang-kim);border-radius:var(--r-4);background:color-mix(in srgb,var(--hoang-kim) 8%,var(--surface));cursor:pointer;text-align:left;transition:background var(--d-base) var(--ease-out)}.lh-milestone:hover{background:color-mix(in srgb,var(--hoang-kim) 14%,var(--surface))}.lh-ms-icon{flex:0 0 auto;color:var(--hoang-kim);display:inline-flex}.lh-ms-body{flex:1 1 auto;display:flex;flex-direction:column;gap:2px;min-width:0}.lh-ms-title{font-size:14px;font-weight:700;color:var(--text)}.lh-ms-desc{font-size:12.5px;color:var(--text2)}.lh-ms-cta{flex:0 0 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var(--border);background:var(--surface2);color:var(--text);font:inherit;font-size:12.5px;font-weight:600;cursor:pointer}.lh-dplan-list{display:flex;flex-direction:column;gap:8px}.lh-dplan-item{display:flex;align-items:center;gap:10px;width:100%;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-4);padding:6px 10px 6px 6px;transition:background var(--d-base) var(--ease-out),border-color var(--d-base) var(--ease-out)}.lh-dplan-item--done{background:var(--success-bg);border-color:var(--success)}.lh-dplan-check{flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:2px solid var(--border);background:var(--surface);display:inline-flex;align-items:center;justify-content:center;color:var(--me-bach);cursor:pointer;padding:0;transition:.15s}.lh-dplan-check:hover{border-color:var(--success)}.lh-dplan-item--done 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20%,transparent);transform:translateY(-1px)}.lh-story-thumb{font-size:32px;flex-shrink:0}.lh-story-info{flex:1;min-width:0}.lh-story-title{font-size:15px;font-weight:700;color:var(--text)}.lh-story-meta{font-size:12px;color:var(--text2);margin-top:2px}.lh-story-arrow{font-size:18px;color:var(--primary);font-weight:700;flex-shrink:0}[data-theme=dark] .lh-story-card{background:linear-gradient(135deg,var(--warning-bg) 0%,var(--warning-bg) 100%);border-color:var(--hoang-kim-3)}[data-theme=dark] .lh-story-card:hover{box-shadow:0 4px 16px #f59e0b33}[data-theme=dark] .lh-story-title{color:var(--mac-hac)}[data-theme=dark] .lh-story-meta{color:var(--text3)}.lh-story-list-link{text-align:center;margin-top:8px}.lh-story-list-btn{background:none;border:none;color:var(--primary);font-family:inherit;font-size:13px;font-weight:600;cursor:pointer;padding:4px 8px;border-radius:6px}.lh-story-list-btn:hover{background:var(--primary-soft, rgba(220,38,38,.08))}.lh-all-decks{margin-top:8px}.lh-all-btn{font-family:var(--font-ui)}@media(max-width:600px){.lh-support-grid{grid-template-columns:repeat(2,1fr)}.lh-today-grid{gap:10px}.lh-hero{padding:16px}.lh-cont-name{font-size:18px}.lh-cont-btn{width:100%;text-align:center}}.shortcut-hint-line{margin-top:16px;font-size:12px;color:var(--text3);text-align:center}@media(max-width:768px){.shortcut-hint-line{display:none}}