*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-bg: #f5f5f7;--color-surface: #ffffff;--color-text: #1d1d1f;--color-text-secondary: #6e6e73;--color-border: #d2d2d7;--color-primary: #007aff;--color-primary-hover: #0056cc;--color-danger: #ff3b30;--color-success: #34c759;--radius: 12px;--radius-sm: 8px;--shadow: 0 1px 3px rgba(0, 0, 0, .08);--shadow-lg: 0 4px 12px rgba(0, 0, 0, .1)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.5;-webkit-font-smoothing:antialiased}.app-container{display:flex;flex-direction:column;max-width:640px;height:100dvh;margin:0 auto;padding:16px}.app-viewport{flex:1;min-height:0;overflow:hidden}.app-track{display:flex;height:100%;will-change:transform}.app-view{flex:0 0 100%;min-width:0;height:100%;overflow-y:auto;-webkit-overflow-scrolling:touch}.app-header{display:flex;align-items:center;justify-content:space-between;padding:16px 0;margin-bottom:8px}.app-header h1{font-size:28px;font-weight:700}.saving-indicator{font-size:13px;color:var(--color-text-secondary);animation:pulse 1s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.loading,.error{display:flex;justify-content:center;align-items:center;min-height:200px;font-size:16px;color:var(--color-text-secondary)}.error{color:var(--color-danger)}.todo-category{--card-padding: 16px;background:var(--color-surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:var(--card-padding);margin-bottom:16px}.category-header{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:40px;margin:calc(var(--card-padding) * -1) calc(var(--card-padding) * -1) 12px;padding:10px var(--card-padding);border-radius:var(--radius) var(--radius) 0 0}.category-title{font-size:17px;font-weight:600;color:inherit}.category-color-btn{flex-shrink:0;width:20px;height:20px;padding:0;border-radius:50%;border:2px solid currentColor;background:transparent;opacity:.65;cursor:pointer;transition:opacity .15s,transform .15s}.category-color-btn:hover{opacity:1;transform:scale(1.12)}.color-palette{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:12px;padding:10px;background:var(--color-bg);border-radius:var(--radius-sm)}.color-option{width:26px;height:26px;padding:0;border-radius:50%;border:2px solid var(--color-surface);box-shadow:0 0 0 1px var(--color-border);cursor:pointer;transition:transform .15s}.color-option:hover{transform:scale(1.12)}.todo-item{display:flex;align-items:flex-start;gap:12px;padding:12px 0;border-bottom:1px solid var(--color-border);transition:opacity .4s ease,transform .4s ease,max-height .4s 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.2s}.memo-new-btn:hover{border-color:var(--color-primary);background:var(--color-surface)}.memo-new-btn:active{background:var(--color-bg)}.memo-new-form{display:flex;flex-direction:column;gap:8px;padding:8px}.memo-new-form input{width:100%;padding:8px 12px;border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:16px;outline:none}.memo-new-form input:focus{border-color:var(--color-primary)}.memo-new-form-actions{display:flex;gap:8px}.memo-editor{display:flex;flex-direction:column;gap:12px}.memo-editor-header{display:flex;align-items:center;gap:8px}.memo-back-btn{border:none;background:none;color:var(--color-primary);font-size:15px;cursor:pointer;padding:6px 4px}.memo-back-btn:hover{text-decoration:underline}.memo-editor-title{flex:1;min-width:0;font-size:16px;font-weight:600;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.btn-save:disabled{opacity:.5;cursor:default}.memo-textarea{width:100%;min-height:60dvh;padding:16px;border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-surface);color:var(--color-text);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:15px;line-height:1.7;resize:vertical;outline:none}.memo-textarea:focus{border-color:var(--color-primary)}@media(max-width:480px){.app-container{padding:12px}.app-header h1{font-size:24px}.todo-category{--card-padding: 12px}.todo-name{font-size:14px}}@media(min-width:768px){.app-container{padding:24px}}