/* 为保持页面统一性，延用 Section 1 的全局变量，并新增局部样式 */
        :root {
            --problem-red: #ef4444;
            --problem-bg: #fef2f2;
            --solution-green: #10b981;
            --solution-bg: #f0fdf4;
            --bg-gray: #f8fafc;
        }

        .pain-points-section {
            width: 100%;
            max-width: 1440px;
            margin: 0 auto;
            padding: 100px 40px;
            background-color: #ffffff;
        }

        /* 模块头部：引入高意图的 B2B 疑问，引发兴趣 */
        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 60px auto;
        }

        .section-header .section-tag {
            color: var(--brand-blue);
            font-size: 14px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 12px;
            display: block;
        }

        .section-header h2 {
            font-size: 38px;
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.25;
            letter-spacing: -0.5px;
        }

        /* 左右分分栏：左边是核心痛点卡片阵列，右边是直观的对比图占位 */
        .grid-container {
            display: flex;
            gap: 50px;
            align-items: center;
        }

        .cards-column {
            flex: 1.2;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .visual-column {
            flex: 0.8;
            width: 100%;
        }

        /* 痛点与解决卡片样式 */
        .pain-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .pain-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 20px -3px rgba(0, 0, 0, 0.08);
        }

        .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        /* 对比行：痛点 vs 解决方案 */
        .compare-row {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .compare-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            line-height: 1.5;
        }

        .compare-item.problem {
            background-color: var(--problem-bg);
            color: #991b1b;
        }

        .compare-item.solution {
            background-color: var(--solution-bg);
            color: #166534;
            font-weight: 500;
        }

        .compare-item .icon {
            font-weight: bold;
            flex-shrink: 0;
        }

        /* 右侧对比图占位容器 */
        .comparison-placeholder {
            width: 100%;
            height: auto;
            aspect-ratio: 12 / 8;
            background-color: var(--bg-gray);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            box-shadow: 0 15px 35px rgba(0,0,0,0.06);
        }

        .comparison-placeholder img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .grid-container {
                flex-direction: column;
                gap: 40px;
            }
            .visual-column {
                max-width: 600px;
                margin: 0 auto;
            }
        }

        @media (max-width: 768px) {
            .pain-points-section {
                padding: 60px 24px;
            }
            .section-header h2 {
                font-size: 28px;
            }
            .compare-item {
                font-size: 14px;
            }
        }