/* 特性卡片 (用于FAQ底部的联系卡片) */
        .feature-card {
            border: none;
            background: white;
            border-radius: 15px;
            padding: 40px 30px;
            text-align: center;
            transition: all 0.3s ease;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            height: 100%;
        }

        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }

        .feature-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, rgba(222, 41, 16, 0.1), rgba(222, 41, 16, 0.05));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            color: var(--primary-red);
            font-size: 2rem;
            transition: all 0.3s ease;
        }

        .feature-card:hover .feature-icon {
            background: var(--primary-red);
            color: white;
        }

        /* 自定义手风琴样式 (贴合主题) */
        .accordion-item {
            border: none;
            margin-bottom: 20px;
            border-radius: 15px !important;
            overflow: hidden;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            background-color: var(--white);
        }

        .accordion-button {
            font-weight: 600;
            color: var(--text-dark);
            background-color: var(--white);
            border: none;
            padding: 1.5rem 2rem;
            font-size: 1.1rem;
            transition: all 0.3s ease;
        }

        .accordion-button:not(.collapsed) {
            color: var(--primary-red);
            background-color: rgba(222, 41, 16, 0.03);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }

        .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23DE2910' class='bi bi-plus-circle' viewBox='0 0 16 16'%3E%3Cpath d='M8 15A7 7 0 1 1 8 1a7 7 0 0 1 0 14zm0 1A8 8 0 1 0 8 0a8 8 0 0 0 0 16z'/%3E%3Cpath d='M8 4a.5.5 0 0 1 .5.5v3h3a.5.5 0 0 1 0 1h-3v3a.5.5 0 0 1-1 0v-3h-3a.5.5 0 0 1 0-1h3v-3A.5.5 0 0 1 8 4z'/%3E%3C/svg%3E");
            background-size: 1.2rem;
            transition: all 0.3s ease;
        }

        .accordion-button:not(.collapsed)::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23DE2910' class='bi bi-dash-circle' viewBox='0 0 16 16'%3E%3Cpath d='M8 15A7 7 0 1 1 8 1a7 7 0 0 1 0 14zm0 1A8 8 0 1 0 8 0a8 8 0 0 0 0 16z'/%3E%3Cpath d='M4 8a.5.5 0 0 1 .5-.5h7a.5.5 0 0 1 0 1h-7A.5.5 0 0 1 4 8z'/%3E%3C/svg%3E");
        }

        .accordion-body {
            padding: 1.5rem 2rem 2rem;
            background-color: var(--white);
            color: var(--text-light);
            border-top: 1px solid rgba(222, 41, 16, 0.1);
        }