@charset "utf-8";
/* CSS Document */

        :root {
            --primary-color: #0b2545;
            --accent-color: #134074;
            --highlight-color: #0077b6;
            --text-dark: #1d2d44;
            --text-muted: #64748b;
            --bg-light: #f8f9fa;
            --white: #ffffff;
            --border-color: #e2e8f0;
            --footer-bg: #07192f;
            --transition: all 0.3s ease;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

        body {
            color: var(--text-dark);
            background-color: var(--bg-light);
            line-height: 1.6;
        }

        a { text-decoration: none; color: inherit; }
        ul { list-style: none; }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }


        /* Banner 区域 */
        .page-header {
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            color: var(--white);
            padding: 60px 0;
            text-align: center;
        }

        .page-header h1 {
            font-size: 2.3rem;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .page-header p {
            color: #cbd5e1;
            font-size: 1.05rem;
            max-width: 700px;
            margin: 0 auto;
        }

        /* 核心数据展示 (Stats Section) */
        .stats-section {
            background: var(--white);
            margin-top: -30px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
            border: 1px solid var(--border-color);
            padding: 30px 20px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            text-align: center;
            position: relative;
            z-index: 10;
        }

        .stat-item {
            border-right: 1px solid var(--border-color);
            padding: 0 15px;
        }

        .stat-item:last-child { border-right: none; }

        .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--highlight-color);
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 13.5px;
            color: var(--text-muted);
            font-weight: 600;
        }

        /* 通用 Section 样式 */
        .section-padding {
            padding: 70px 0;
        }

        .section-title-box {
            text-align: center;
            margin-bottom: 45px;
        }

        .section-subtitle {
            color: var(--highlight-color);
            font-size: 13px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 6px;
        }

        .section-title {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color);
        }

        /* 公司介绍 (Company Intro) */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .intro-img-box {
            position: relative;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }

        .intro-img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .intro-text p {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 18px;
            line-height: 1.7;
        }

        .mission-box {
            background: #e0f2fe;
            border-left: 4px solid var(--highlight-color);
            padding: 16px 20px;
            border-radius: 0 8px 8px 0;
            margin-top: 20px;
        }

        .mission-box h4 {
            color: var(--primary-color);
            font-size: 15px;
            margin-bottom: 5px;
        }

        .mission-box p {
            color: var(--accent-color);
            font-size: 13.5px;
            margin-bottom: 0;
        }

        /* 核心优势 (Advantages) */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .adv-card {
            background: var(--white);
            padding: 30px 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .adv-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.06);
            border-color: var(--highlight-color);
        }

        .adv-icon {
            width: 50px;
            height: 50px;
            background: rgba(0, 119, 182, 0.1);
            color: var(--highlight-color);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
        }

        .adv-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 10px;
        }

        .adv-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 发展历程 (Timeline / Milestones) */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::after {
            content: '';
            position: absolute;
            width: 2px;
            background: var(--border-color);
            top: 0;
            bottom: 0;
            left: 50%;

            margin-left: -1px;
        }

        .timeline-item {
            padding: 10px 40px;
            position: relative;
            width: 50%;
        }

        .timeline-item.left { left: 0; text-align: right; }
        .timeline-item.right { left: 50%; text-align: left; }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 14px;
            height: 14px;
            right: -7px;
            background: var(--white);
            border: 3px solid var(--highlight-color);
            top: 18px;
            border-radius: 50%;
            z-index: 1;
        }

        .timeline-item.right::after { left: -7px; }

        .timeline-content {
            background: var(--white);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        .timeline-year {
            font-weight: 800;
            color: var(--highlight-color);
            font-size: 18px;
            margin-bottom: 6px;
        }

        .timeline-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 6px;
        }

        .timeline-desc {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 页脚 Footer */
        footer {
            background-color: var(--footer-bg);
            color: #cbd5e1;
            padding: 40px 0 20px;
            font-size: 13.5px;
        }

        .footer-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            padding-bottom: 20px;
            margin-bottom: 20px;
        }

        @media (max-width: 992px) {
            .stats-section { grid-template-columns: repeat(2, 1fr); gap: 20px; }
            .stat-item { border-right: none; }
            .intro-grid { grid-template-columns: 1fr; }
            .advantages-grid { grid-template-columns: repeat(2, 1fr); }
            .timeline::after { left: 31px; }
            .timeline-item { width: 100%; padding-left: 70px; padding-right: 25px; }
            .timeline-item.left { text-align: left; }
            .timeline-item.right { left: 0; }
            .timeline-item.left::after, .timeline-item.right::after { left: 24px; }
        }

        @media (max-width: 600px) {
            .advantages-grid { grid-template-columns: 1fr; }
            .stats-section { grid-template-columns: 1fr; }
        }