/* 1. 基础容器 - 深色背景 */
    .dark-features-section {
        background-color: #0b1121; /* 深蓝黑色底 */
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
        padding: 80px 20px;
        color: #ffffff;
        text-align: center;
    }

    /* 标题样式及装饰条 */
    .dark-features-section h2 {
        font-size: 36px;
        font-weight: 800;
        margin-bottom: 15px;
        position: relative;
        display: inline-block;
    }

    /* 标题下方的青色装饰条 */
    .dark-features-section h2::after {
        content: "";
        position: absolute;
        bottom: -15px;
        left: 50%;
        transform: translateX(-50%);
        width: 60px;
        height: 4px;
        background-color: #56B8B8; /* 您的主色调 */
        border-radius: 2px;
    }

    /* 2. 网格布局 - 3列 */
    .dark-features-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 25px;
        max-width: 1200px;
        margin: 60px auto 0;
    }

    /* 3. 卡片样式 */
    .dark-feature-card {
        background-color: rgba(255, 255, 255, 0.05); /* 半透明叠层感 */
        border: 1px solid rgba(255, 255, 255, 0.1); /* 极其微弱的边框 */
        border-radius: 16px;
        padding: 30px;
        display: flex;
        align-items: flex-start; /* 图标与文字顶部对齐 */
        gap: 20px;
        text-align: left;
        transition: all 0.3s ease;
    }

    .dark-feature-card:hover {
        background-color: rgba(255, 255, 255, 0.08);
        border-color: #56B8B8; /* 悬停时边框变色 */
        transform: translateY(-5px);
    }

    /* 图标颜色 */
    .dark-feature-card svg {
        color: #56B8B8; /* 使用主色调 */
        flex-shrink: 0;
        margin-top: 4px;
    }

    /* 文字内容 */
    .feature-info h3 {
        font-size: 19px;
        font-weight: 700;
        margin: 0 0 10px 0;
        color: #ffffff;
    }

    .feature-info p {
        font-size: 14px;
        line-height: 1.6;
        color: #94a3b8; /* 描述文字使用浅灰色 */
        margin: 0;
    }

    /* 4. 响应式适配 */
    @media (max-width: 1024px) {
        .dark-features-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 768px) {
        .dark-features-grid { grid-template-columns: 1fr; }
        .dark-features-section h2 { font-size: 28px; }
        .dark-feature-card { padding: 25px; }
    }