/* 模态框（设置） */
        .modal-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.7);
            backdrop-filter: blur(8px);
            z-index: 1000;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        .modal-overlay.open {
            display: flex;
        }
        .modal {
            background: linear-gradient(180deg, color-mix(in srgb, var(--bg-secondary) 97%, var(--accent) 4%), var(--bg-secondary));
            border: 1px solid var(--border-color);
            border-radius: calc(var(--radius) + 2px);
            padding: 32px 36px;
            max-width: 480px;
            width: 100%;
            box-shadow: var(--shadow-lg);
        }
        .modal h2 { font-size: 24px; font-weight: 600; margin-bottom: 6px; display: flex; align-items: center; gap: 10px; }
        .modal .sub { color: var(--text-muted); font-size: 15px; margin-bottom: 24px; }
        .modal .form-group { margin-bottom: 18px; }
        .modal .form-group label { display: block; font-size: 14px; font-weight: 500; color: var(--text-secondary); margin-bottom: 5px; }
        .modal .form-group input, .modal .form-group select, .modal .form-group textarea {
            width: 100%;
            padding: 10px 14px;
            background: var(--bg-input);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 15px;
            font-family: var(--font);
            outline: none;
        }
        .modal .form-group input:focus, .modal .form-group select:focus, .modal .form-group textarea:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-glow);
        }
        .modal .modal-actions {
            display: flex;
            gap: 12px;
            margin-top: 24px;
            justify-content: flex-end;
        }
        .modal .modal-actions button {
            padding: 10px 26px;
            border-radius: var(--radius-sm);
            border: none;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            font-family: var(--font);
        }
        .modal .modal-actions .btn-secondary {
            background: var(--bg-card);
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
        }
        .modal .modal-actions .btn-secondary:hover { background: var(--bg-hover); }
        .modal .modal-actions .btn-primary {
            background: var(--accent);
            color: #fff;
        }
        .modal .modal-actions .btn-primary:hover { background: var(--accent-hover); }
        .modal .modal-actions .btn-danger { background: #f87171; color: #fff; }
        .modal .modal-actions .btn-danger:hover { background: #ef4444; }
        .hidden-setting { display: none !important; }

        /* 会话操作菜单（触屏长按） */
        .convo-menu {
            position: fixed;
            z-index: 60;
            min-width: 160px;
            background: color-mix(in srgb, var(--bg-card) 92%, transparent);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
            padding: 6px;
            display: flex;
            flex-direction: column;
            gap: 2px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(6px) scale(0.98);
            transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s ease;
            pointer-events: none;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .convo-menu.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0) scale(1);
            pointer-events: auto;
        }
        .convo-menu button {
            display: flex;
            align-items: center;
            gap: 8px;
            width: 100%;
            padding: 10px 14px;
            border: none;
            background: transparent;
            color: var(--text-primary);
            font-size: 15px;
            font-family: var(--font);
            border-radius: 8px;
            cursor: pointer;
            text-align: left;
            white-space: nowrap;
        }
        .convo-menu button:hover {
            background: var(--bg-hover);
        }
        .convo-menu .menu-delete {
            color: #f87171;
        }
        .convo-menu .menu-delete:hover {
            background: color-mix(in srgb, #f87171 12%, transparent);
        }

        /* 消息操作菜单（触屏长按气泡） */
        .msg-menu {
            position: fixed;
            z-index: 60;
            min-width: 160px;
            background: color-mix(in srgb, var(--bg-card) 92%, transparent);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
            padding: 6px;
            display: flex;
            flex-direction: column;
            gap: 2px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(6px) scale(0.98);
            transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s ease;
            pointer-events: none;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .msg-menu.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0) scale(1);
            pointer-events: auto;
        }
        .msg-menu button {
            display: flex;
            align-items: center;
            gap: 8px;
            width: 100%;
            padding: 10px 14px;
            border: none;
            background: transparent;
            color: var(--text-primary);
            font-size: 15px;
            font-family: var(--font);
            border-radius: 8px;
            cursor: pointer;
            text-align: left;
            white-space: nowrap;
        }
        .msg-menu button:hover {
            background: var(--bg-hover);
        }

        /* 触屏设备隐藏悬浮操作按钮（改用长按菜单） */
        @media (hover: none), (pointer: coarse) {
            .sidebar-list .convo-item .actions {
                display: none;
            }
        }

        /* 风格分段滑块选择器 */
        .style-segmented {
            position: relative;
            display: flex;
            background: var(--bg-input);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            height: 40px;
            user-select: none;
        }
        .style-thumb {
            position: absolute;
            top: 3px;
            bottom: 3px;
            left: 3px;
            width: calc((100% - 6px) / 4);
            background: var(--accent-gradient);
            border-radius: calc(var(--radius-sm) - 3px);
            box-shadow: 0 2px 10px var(--accent-glow);
            transition: transform 0.25s ease, background-color 0.2s ease, box-shadow 0.2s ease;
            z-index: 0;
        }
        .style-thumb.warn {
            background: linear-gradient(135deg, #f87171 0%, #f43f5e 100%);
            box-shadow: 0 2px 10px rgba(248, 113, 113, 0.35);
        }
        .style-seg {
            position: relative;
            z-index: 1;
            flex: 1;
            border: none;
            background: transparent;
            color: var(--text-muted);
            font-size: 15px;
            font-family: var(--font);
            font-weight: 500;
            cursor: pointer;
            transition: color 0.2s;
        }
        .style-seg:hover {
            color: var(--text-secondary);
        }
        .style-seg.active {
            color: #fff;
        }
        .style-tooltip {
            position: absolute;
            top: calc(100% + 8px);
            left: 0;
            transform: translateX(-50%);
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 8px 12px;
            font-size: 13px;
            line-height: 1.6;
            color: var(--text-secondary);
            box-shadow: var(--shadow);
            max-width: 280px;
            width: max-content;
            text-align: center;
            z-index: 50;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.15s ease, visibility 0.15s ease;
            pointer-events: none;
        }
        .style-tooltip.show {
            opacity: 1;
            visibility: visible;
        }
        .style-tooltip-warn {
            color: #f87171;
            font-weight: 600;
            margin-top: 6px;
            padding-top: 6px;
            border-top: 1px solid var(--border-color);
        }

        /* 温度设置 */
        .temp-row {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .temp-row input[type="range"] {
            flex: 1;
            accent-color: var(--accent);
            cursor: pointer;
            height: 20px;
            padding: 0;
            background: transparent;
            border: none;
            box-shadow: none;
        }
        .temp-value {
            flex-shrink: 0;
            min-width: 44px;
            text-align: center;
            padding: 3px 8px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
        }
        .field-hint {
            margin-top: 6px;
            font-size: 13px;
            line-height: 1.5;
            color: var(--text-muted);
        }
        .field-hint.hint-warn {
            color: #fbbf24;
        }