:root {
            --primary: #2563eb;
            --primary-light: #dbeafe;
            --bg-body: #f8fafc;
            --card-bg: #ffffff;
            --text-main: #1e293b;
            --text-secondary: #64748b;
            --border-color: #e2e8f0;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            --radius: 12px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: "Helvetica Neue", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            scroll-behavior: smooth;
            /*padding: 20px;*/
        }
.page-wrapper {
            max-width: 1620px;
            margin: 50px auto;
            display: flex;
            gap: 32px;
        }

        /* ========== 左侧导航 ========== */
        .sidebar {
            width: 220px;
            flex-shrink: 0;
            position: sticky;
            top: 164px;
            align-self: flex-start;
            background: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
        }

        .sidebar a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 24px;
            color: var(--text-main);
            text-decoration: none;
            font-weight: 600;
            transition: all 0.25s ease;
            border-left: 4px solid transparent;
        }

        .sidebar a:hover,
        .sidebar a.active {
            background: var(--primary-light);
            color: var(--primary);
            border-left-color: var(--primary);
        }

        .sidebar a i {
            font-size: 18px;
            width: 24px;
            text-align: center;
        }

        /* ========== 主内容区 ========== */
        .main-content {
            flex: 1;
        }

        .section-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 32px;
            margin-bottom: 40px;
            box-shadow: var(--shadow);
            transition: transform 0.2s;
        }

        .section-card:hover {
            transform: translateY(-2px);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 2px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .subsection h3 {
            font-size: 20px;
            margin: 20px 0 14px;
            color: var(--text-main);
            font-weight: 600;
        }

        .subsection p,
        .subsection div:not(.image-grid) {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.8;
        }

        /* ========== 图片网格 ========== */
        .image-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 16px;
        }

        .image-item {
            border-radius: 8px;
            overflow: hidden;
            aspect-ratio: 1 / 1;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }

        .image-item img {
            width: auto;
            height: 100%;
            object-fit: cover;
            display: block;
            transition: transform 0.3s ease;
            margin: 0 auto;
        }

        .image-item:hover {
            transform: translateY(-6px);
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
        }

        .image-item:hover img {
            transform: scale(1.05);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 992px) {
            .image-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 768px) {
            .page-wrapper {
                flex-direction: column;
            }
            .sidebar {
                position: static;
                width: 100%;
                display: flex;
                flex-wrap: wrap;
                justify-content: center;
                gap: 8px;
                padding: 12px;
            }
            .sidebar a {
                flex: 1;
                text-align: center;
                justify-content: center;
                padding: 12px 8px;
                min-width: 100px;
            }
            .section-card {
                padding: 24px;
            }
        }

        @media (max-width: 576px) {
            .image-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .section-title {
                font-size: 24px;
            }
        }

        @media (max-width: 400px) {
            .image-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 锚点偏移 */
        #company_intro,
        #certificates,
        #awards {
            scroll-margin-top: 150px;
        }
        
        
        
        .section-card img{max-width:100% !important;}