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var(--border);border-radius:var(--radius-sm);gap:4px;padding:3px;display:flex}.seg-btn{text-align:center;color:var(--text-secondary);transition:var(--transition);border-radius:6px;flex:1;padding:8px;font-size:13px;font-weight:600}.seg-btn.active{color:var(--primary);background:#fff;box-shadow:0 1px 4px #00000014}.speed-picker{gap:6px;display:flex}.speed-btn{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-secondary);transition:var(--transition);flex:1;padding:8px;font-size:13px;font-weight:600}.speed-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}.numbers-session.supermiya-layout{box-sizing:border-box;background:var(--bg);-webkit-user-select:none;user-select:none;flex-direction:column;justify-content:space-between;max-width:440px;height:100dvh;margin:0 auto;padding:14px 20px 20px;display:flex;overflow:hidden}.supermiya-topbar{box-sizing:border-box;justify-content:space-between;align-items:center;width:100%;padding:4px 6px 10px;display:flex}.supermiya-timer{font-variant-numeric:tabular-nums;letter-spacing:.5px;color:#111827;font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,Segoe UI,Roboto,sans-serif;font-size:21px;font-weight:800;line-height:1}[data-theme=dark] .supermiya-timer{color:#f9fafb}.supermiya-finish-btn{color:#d18a51;cursor:pointer;background:0 0;border:none;padding:6px 0;font-family:inherit;font-size:15px;font-weight:500;transition:opacity .15s}.supermiya-finish-btn:hover{opacity:.8;text-decoration:underline}.supermiya-card-area{perspective:1200px;flex:1;justify-content:center;align-items:center;width:100%;min-height:0;padding:6px 0;display:flex}.supermiya-card-wrapper{cursor:pointer;-webkit-tap-highlight-color:transparent;width:100%;max-width:360px;height:100%;min-height:380px;max-height:540px;position:relative}.supermiya-card-wrapper .card-front,.supermiya-card-wrapper .card-back{border-radius:20px;box-shadow:0 10px 28px #d18a5147,0 2px 8px #0000000a}.supermiya-card-wrapper .card-front{color:#fff;background:#d18a51}.supermiya-card-wrapper .card-back{color:#fff;background:#2c3e50}.supermiya-card-wrapper .num-huge{text-align:center;color:#fff!important;letter-spacing:0!important;text-shadow:none!important;font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,Segoe UI,Roboto,sans-serif!important;font-size:84px!important;font-weight:500!important;line-height:1!important}.supermiya-card-wrapper .word-title{text-align:center;color:#fff!important;text-shadow:none!important;font-size:40px!important;font-weight:700!important;line-height:1.25!important}.supermiya-card-wrapper .card-desc-preview,.supermiya-card-wrapper .card-desc-full{color:#ffffffe6;text-align:center;max-width:90%;margin-top:14px;margin-left:auto;margin-right:auto;font-size:15px;line-height:1.45}.supermiya-bottom-area{flex-direction:column;align-items:center;width:100%;padding-top:10px;display:flex}.supermiya-counter{color:#111827;letter-spacing:.5px;margin-bottom:12px;font-size:15px;font-weight:700}[data-theme=dark] .supermiya-counter{color:#e5e7eb}.supermiya-nav-row{justify-content:space-around;align-items:center;width:100%;max-width:320px;padding:4px 0;display:flex}.supermiya-nav-btn{cursor:pointer;color:#94a3b8;-webkit-tap-highlight-color:transparent;background:0 0;border:none;border-radius:12px;justify-content:center;align-items:center;padding:10px 18px;transition:transform .15s,color .15s;display:flex}.supermiya-nav-btn:hover:not(:disabled){color:#d18a51;transform:scale(1.1)}.supermiya-nav-btn:active:not(:disabled){transform:scale(.95)}.supermiya-nav-btn.disabled,.supermiya-nav-btn:disabled{color:#d1d5db;opacity:.45;cursor:not-allowed;pointer-events:none}[data-theme=dark] .supermiya-nav-btn{color:#64748b}[data-theme=dark] .supermiya-nav-btn:hover:not(:disabled){color:#d18a51}[data-theme=dark] .supermiya-nav-btn.disabled,[data-theme=dark] .supermiya-nav-btn:disabled{color:#334155;opacity:.4}.card-flip-prompt{color:var(--text-muted);margin-top:24px;font-size:13px}.card-nav-btn.secondary{background:var(--bg);color:var(--text);border-radius:var(--radius);width:auto;padding:0 18px;font-size:14px;font-weight:600}.auto-play-controls{justify-content:space-between;align-items:center;margin-top:16px;padding:0 10px;display:flex}.btn-pause-play{background:var(--bg-card);box-shadow:var(--shadow);color:var(--text);border-radius:20px;padding:8px 18px;font-size:13px;font-weight:600}.auto-speed-indicator{color:var(--text-secondary);font-size:13px;font-weight:600}.keyboard-hints{text-align:center;color:var(--text-muted);margin-top:14px;font-size:12px}.num-database-container{padding:0 20px}.db-search-bar input{background:var(--bg-card);border:1.5px solid var(--border);border-radius:var(--radius);width:100%;box-shadow:var(--shadow);transition:var(--transition);padding:12px 16px;font-size:14.5px}.db-search-bar input:focus{border-color:var(--primary)}.db-filter-chips{-webkit-overflow-scrolling:touch;gap:8px;margin:12px 0 10px;padding-bottom:4px;display:flex;overflow-x:auto}.db-filter-chips::-webkit-scrollbar{display:none}.db-chip{background:var(--bg-card);border:1px solid var(--border);color:var(--text-secondary);border-radius:16px;flex-shrink:0;padding:6px 12px;font-size:12px;font-weight:600}.db-chip.active{background:var(--primary);color:#fff;border-color:var(--primary)}.db-results-count{color:var(--text-secondary);margin-bottom:12px;font-size:13px;font-weight:500}.db-items-list{flex-direction:column;gap:10px;display:flex}.db-item-card{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--border);transition:var(--transition);align-items:center;gap:14px;padding:14px 16px;display:flex}.db-item-card.customized{border-left:4px solid var(--primary)}.db-item-left{text-align:center;min-width:60px}.db-item-num{color:var(--primary);font-size:24px;font-weight:800;line-height:1}.db-item-formula{color:var(--text-secondary);margin-top:4px;font-family:monospace;font-size:10.5px}.db-item-center{flex:1}.db-item-word{color:#1a1a1a;align-items:center;gap:6px;font-size:16px;font-weight:700;display:flex}.custom-tag{color:#b45309;background:#fef3c7;border-radius:8px;padding:1px 6px;font-size:10px;font-weight:700}.db-item-desc{color:var(--text-secondary);margin-top:4px;font-size:12.5px;line-height:1.35}.db-item-right{align-items:center;display:flex}.btn-edit-item{background:var(--bg);width:34px;height:34px;transition:var(--transition);border-radius:50%;justify-content:center;align-items:center;font-size:14px;display:flex}.btn-edit-item:active{transform:scale(.9)}.btn-save-edit{border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition);border:none;padding:10px 16px;font-size:14px;font-weight:600}.btn-save-edit.primary{background:var(--primary);color:#fff}.num-guide-container{padding:0 20px}.guide-card{background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow);border:1px solid var(--border);margin-bottom:16px;padding:20px}.guide-card h3{color:#1a1a1a;margin-bottom:10px;font-size:16px;font-weight:700}.guide-card p{color:var(--text-secondary);font-size:13.5px;line-height:1.5}.formula-box{border-radius:var(--radius);text-align:center;color:#ea580c;background:#fff7ed;border:1px solid #fed7aa;margin-top:12px;padding:12px;font-size:16px;font-weight:700}.formula-box .vowel{color:var(--primary);text-decoration:underline}.guide-table{border-collapse:collapse;width:100%;margin-top:10px;font-size:12.5px}.guide-table th,.guide-table td{border-bottom:1px solid var(--border);text-align:left;padding:8px 10px}.guide-table th{background:var(--bg);color:var(--text-secondary);font-weight:700}.examples-list{margin-top:8px;padding:0;list-style:none}.examples-list li{border-bottom:1px dashed var(--border);color:var(--text);padding:8px 0;font-size:13.5px}.examples-list li:last-child{border-bottom:none}