/* ===== CSS 变量 & 重置 ===== */
        :root {
            --primary: #4687f0;
            --primary-dark: #2558b8;
            --primary-light: #73b8ff;
            --dark: #1a1a1a;
            --gray: #666;
            --light-gray: #f8f8f8;
            --white: #fff;
            --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            --radius: 6px;
            --transition: 0.3s ease;
            --nav-height: 80px;
            --nav-height-mobile: 64px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            list-style: none;
            text-decoration: none;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: "Microsoft Yahei", "PingFang SC", -apple-system, BlinkMacSystemFont, sans-serif;
            color: var(--gray);
            background: #fff;
            line-height: 1.6;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
        }

        /* ===== 导航栏（与首页一致） ===== */
        .header-nav-wrap {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 99999;
            padding: 0 clamp(16px, 4%, 60px);
            min-height: var(--nav-height-mobile);
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: background var(--transition), box-shadow var(--transition);
            background: rgba(0, 0, 0, 0.2);
            backdrop-filter: blur(2px);
            -webkit-backdrop-filter: blur(2px);
        }

        .header-nav-wrap.fixed-nav {
            background: #ffffff;
            box-shadow: var(--shadow);
            backdrop-filter: none;
            -webkit-backdrop-filter: none;
        }

        .logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            z-index: 10;
        }

        .logo img {
            height: clamp(44px, 6vw, 76px);
            width: auto;
            object-fit: contain;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: clamp(6px, 1.2vw, 16px);
        }

        .nav-list li a {
            display: block;
            color: #fff;
            font-size: clamp(14px, 1.1vw, 16px);
            padding: 8px 12px;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
            font-weight: 500;
            letter-spacing: 0.3px;
        }

        .header-nav-wrap.fixed-nav .nav-list li a {
            color: #333;
        }

        .nav-list li a::after {
            content: '';
            position: absolute;
            left: 12px;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
        }

        .nav-list li a:hover {
            color: var(--primary);
        }
        .nav-list li a:hover::after {
            width: calc(100% - 24px);
        }

        .header-nav-wrap.fixed-nav .nav-list li a:hover {
            color: var(--primary);
        }

        /* 当前页面高亮 */
        .nav-list li a.active {
            color: var(--primary) !important;
        }
        .nav-list li a.active::after {
            width: calc(100% - 24px);
        }
        .header-nav-wrap.fixed-nav .nav-list li a.active {
            color: var(--primary) !important;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px 4px;
            z-index: 20;
            background: transparent;
            border: none;
            outline: none;
        }

        .hamburger span {
            display: block;
            width: 28px;
            height: 3px;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition);
            transform-origin: center;
        }

        .header-nav-wrap.fixed-nav .hamburger span {
            background: #333;
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }

        /* ===== 页面横幅 ===== */
        .page-banner {
            width: 100%;
            height: 50vh;
            min-height: 360px;
            max-height: 600px;
            position: relative;
            overflow: hidden;
            background: url("../tgy/bj5.jpg") center/cover no-repeat;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.35);
            z-index: 1;
        }

        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            color: #fff;
            padding: 0 20px;
        }

        .page-banner .banner-title {
            font-size: clamp(36px, 6vw, 72px);
            font-weight: 700;
            letter-spacing: 4px;
            margin-bottom: 8px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }

        .page-banner .banner-sub {
            font-size: clamp(16px, 1.4vw, 24px);
            color: #cce0ff;
            letter-spacing: 2px;
            font-weight: 300;
        }

        .page-banner .banner-line {
            width: 60px;
            height: 3px;
            background: var(--primary);
            margin: 16px auto 0;
            border-radius: 2px;
        }
     
        /* ===== 概况主区域 ===== */
        .about-main {
            width: 100%;
            max-width: 1300px;  /* ← 从 1200px 调整到 1300px，更大气 */
            margin: 0 auto;
            padding: clamp(50px, 8vh, 80px) clamp(20px, 4vw, 60px);
        }

        /* ===== 公司简介 ===== */
        .intro-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            margin-bottom: 70px;
            align-items: center;
        }

        .intro-text h2 {
            font-size: clamp(28px, 2.6vw, 40px);
            color: #1a2a4a;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .intro-text h2 span {
            color: var(--primary);
        }

        .intro-text .sub-tit {
            font-size: clamp(14px, 1vw, 16px);
            color: var(--primary);
            letter-spacing: 2px;
            font-weight: 500;
            margin-bottom: 4px;
        }

        .intro-text .divider-line {
            width: 50px;
            height: 3px;
            background: var(--primary);
            margin: 12px 0 20px;
            border-radius: 2px;
        }

        .intro-text p {
            font-size: clamp(15px, 1.05vw, 17px);
            color: #555;
            line-height: 1.9;
            margin-bottom: 16px;
            text-align: justify;
            text-indent: 2em;
        }

        .intro-text p:last-child {
            margin-bottom: 0;
        }

        .intro-image {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.08);
            transition: all var(--transition);
        }

        .intro-image:hover {
            transform: scale(1.01);
            box-shadow: 0 12px 50px rgba(70, 135, 240, 0.12);
        }

        .intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 280px;
            display: block;
        }

        /* ===== 数据概览 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 70px;
            background: var(--light-gray);
            border-radius: 12px;
            padding: clamp(30px, 4vw, 50px) clamp(20px, 3vw, 40px);
        }

        .stats-item {
            text-align: center;
            padding: 10px;
        }

        .stats-item .num {
            font-size: clamp(32px, 3.6vw, 52px);
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

        .stats-item .num .plus {
            font-size: clamp(20px, 1.8vw, 30px);
            color: var(--primary);
        }

        .stats-item .label {
            font-size: clamp(14px, 1vw, 16px);
            color: #888;
            margin-top: 4px;
        }

        /* ===== 发展历程 ===== */
        .history-section {
            margin-bottom: 70px;
        }

        .history-section .section-title {
            text-align: center;
            font-size: clamp(28px, 2.6vw, 38px);
            color: #1a2a4a;
            font-weight: 600;
            margin-bottom: 8px;
            letter-spacing: 1px;
        }

        .history-section .section-title span {
            color: var(--primary);
        }

        .history-section .section-sub {
            text-align: center;
            color: #999;
            font-size: clamp(14px, 1vw, 16px);
            margin-bottom: 40px;
            letter-spacing: 1px;
        }

        .history-timeline {
            position: relative;
            padding-left: 40px;
        }

        .history-timeline::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: #e0e4e8;
            border-radius: 2px;
        }

        .history-item {
            position: relative;
            padding: 0 0 30px 30px;
            border-left: 3px solid transparent;
            transition: all var(--transition);
        }

        .history-item::before {
            content: '';
            position: absolute;
            left: -27px;
            top: 6px;
            width: 16px;
            height: 16px;
            background: var(--primary);
            border-radius: 50%;
            border: 3px solid #fff;
            box-shadow: 0 0 0 3px var(--primary);
            transition: all var(--transition);
        }

        .history-item:hover::before {
            background: var(--primary-dark);
            box-shadow: 0 0 0 5px rgba(70, 135, 240, 0.2);
        }

        .history-item .year {
            font-size: clamp(20px, 1.6vw, 28px);
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .history-item .title {
            font-size: clamp(16px, 1.1vw, 18px);
            font-weight: 600;
            color: #333;
            margin-bottom: 4px;
        }

        .history-item .desc {
            font-size: clamp(14px, 0.95vw, 15px);
            color: #777;
            line-height: 1.7;
        }

        /* 发展历程底部总结 */
        .history-summary {
            margin-top: 30px;
            padding: 20px 30px;
            background: linear-gradient(135deg, rgba(70, 135, 240, 0.08), rgba(70, 135, 240, 0.02));
            border-radius: 10px;
            border-left: 4px solid var(--primary);
            text-align: center;
            font-size: clamp(16px, 1.1vw, 18px);
            color: #1a2a4a;
            font-weight: 500;
            letter-spacing: 0.5px;
        }

        .history-summary strong {
            color: var(--primary);
        }

        /* ===== 企业文化 ===== */
        .culture-section {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-bottom: 70px;
        }

        .culture-item {
            background: var(--light-gray);
            border-radius: 12px;
            padding: clamp(30px, 3vw, 40px) clamp(20px, 2.5vw, 32px);
            text-align: center;
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .culture-item:hover {
            background: #fff;
            border-color: var(--primary);
            box-shadow: 0 8px 30px rgba(70, 135, 240, 0.08);
            transform: translateY(-6px);
        }

        .culture-item .icon {
            font-size: clamp(40px, 4vw, 56px);
            margin-bottom: 12px;
            display: block;
        }

        .culture-item h4 {
            font-size: clamp(18px, 1.3vw, 22px);
            color: #1a2a4a;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .culture-item p {
            font-size: clamp(14px, 0.95vw, 15px);
            color: #777;
            line-height: 1.7;
        }

        /* ===== 荣誉资质 ===== */
        .honor-section {
            margin-bottom: 30px;
        }

        .honor-section .section-title {
            text-align: center;
            font-size: clamp(28px, 2.6vw, 38px);
            color: #1a2a4a;
            font-weight: 600;
            margin-bottom: 8px;
            letter-spacing: 1px;
        }

        .honor-section .section-title span {
            color: var(--primary);
        }

        .honor-section .section-sub {
            text-align: center;
            color: #999;
            font-size: clamp(14px, 1vw, 16px);
            margin-bottom: 40px;
            letter-spacing: 1px;
        }

        .honor-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 24px;
        }

        .honor-item {
            background: var(--light-gray);
            border-radius: 10px;
            padding: 24px 16px;
            text-align: center;
            transition: all var(--transition);
            border: 1px solid #eee;
        }

        .honor-item:hover {
            background: #fff;
            border-color: var(--primary);
            transform: translateY(-4px);
            box-shadow: 0 6px 24px rgba(70, 135, 240, 0.08);
        }

        .honor-item .badge {
            font-size: clamp(32px, 3vw, 44px);
            display: block;
            margin-bottom: 8px;
        }

        .honor-item .name {
            font-size: clamp(14px, 0.95vw, 15px);
            color: #333;
            font-weight: 500;
            line-height: 1.4;
        }

        .honor-item .year-tag {
            display: inline-block;
            margin-top: 6px;
            font-size: 12px;
            color: #fff;
            background: var(--primary);
            padding: 2px 14px;
            border-radius: 20px;
        }

        /* ===== 页脚（与首页一致） ===== */
        footer {
            width: 100%;
            background: var(--dark);
            color: #ccc;
            padding: clamp(40px, 8vh, 80px) clamp(20px, 4vw, 60px) 30px;
            position: relative;
        }

        .back-top-btn {
            width: clamp(48px, 5vw, 60px);
            height: clamp(48px, 5vw, 60px);
            border-radius: 50%;
            background: #444;
            color: #fff;
            font-size: clamp(20px, 2vw, 28px);
            display: flex;
            align-items: center;
            justify-content: center;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            top: -30px;
            cursor: pointer;
            transition: background var(--transition);
            border: none;
        }

        .back-top-btn:hover {
            background: var(--primary);
        }

        .footer-top-wrap {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: clamp(30px, 4vw, 60px);
            margin-bottom: 50px;
        }

        .footer-column h3 {
            font-size: clamp(18px, 1.3vw, 20px);
            color: #fff;
            font-weight: 400;
            margin-bottom: 20px;
            padding-left: 16px;
            position: relative;
        }

        .footer-column h3::before {
            content: "|";
            position: absolute;
            left: 0;
            color: #fff;
            font-size: 22px;
        }

        .footer-column ul li {
            margin-bottom: 12px;
        }

        .footer-column ul li a {
            color: #ccc;
            font-size: clamp(13px, 0.9vw, 14px);
            transition: color var(--transition);
        }

        .footer-column ul li a:hover {
            color: var(--primary-light);
        }

        .footer-qrcode-box {
    text-align: right;
    /* 开启弹性布局，垂直排列 */
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.footer-qrcode-title {
    font-size: clamp(16px, 1.2vw, 18px);
    color: #ccc;
    letter-spacing: 2px;
    margin-bottom: 16px;
    font-style: italic;
}

.footer-qrcode {
    width: clamp(140px, 15vw, 220px);
    height: auto;
    aspect-ratio: 1/1;
    border: 8px solid #fff;
    border-radius: 4px;
    max-width: 220px;
}

        .footer-copyright {
            border-top: 1px solid #333;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: clamp(12px, 0.8vw, 14px);
            color: #888;
        }

       .copyright-left {
    display: flex;
    align-items: center; /* 所有元素垂直居中 */
    flex-wrap: nowrap; /* 强制不换行 */
    gap: 6px;
}
.copyright-left img {
    height: 20px;
}

        .copyright-right {
            flex-shrink: 0;
        }

        /* ============================================================ */
        /* ===== 响应式 ===== */
        @media (max-width: 992px) {
            .intro-section {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .intro-image {
                order: -1;
            }
            .intro-image img {
                min-height: 200px;
                max-height: 400px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .culture-section {
                grid-template-columns: repeat(2, 1fr);
            }
            .page-banner {
                height: 40vh;
                min-height: 280px;
            }
            .honor-grid {
                grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
            }
        }

        @media (max-width: 768px) {
            /* 导航 */
            .header-nav-wrap {
                min-height: var(--nav-height-mobile);
                padding: 0 16px;
                background: rgba(0, 0, 0, 0.3);
            }
            .header-nav-wrap.fixed-nav {
                background: #fff;
            }

            .nav-list {
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100vh;
                background: rgba(0, 0, 0, 0.92);
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 8px;
                transform: translateX(100%);
                transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                padding: 80px 20px 40px;
                backdrop-filter: blur(10px);
                -webkit-backdrop-filter: blur(10px);
            }

            .nav-list.open {
                transform: translateX(0);
            }

            .nav-list li a {
                color: #fff !important;
                font-size: 20px;
                padding: 12px 20px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                width: 100%;
                text-align: center;
            }

            .nav-list li a::after {
                display: none;
            }

            .nav-list li a:hover {
                color: var(--primary-light) !important;
            }
            .nav-list li a.active {
                color: var(--primary-light) !important;
            }

            .hamburger {
                display: flex;
            }

            .header-nav-wrap.fixed-nav .hamburger span {
                background: #333;
            }

            /* 横幅 */
            .page-banner {
                height: 35vh;
                min-height: 220px;
            }
            .page-banner .banner-title {
                font-size: 28px;
            }
            .page-banner .banner-sub {
                font-size: 14px;
            }

            /* 内容 */
            .about-main {
                padding: 30px 16px;
            }
            .intro-section {
                gap: 20px;
                margin-bottom: 40px;
            }
            .intro-text h2 {
                font-size: 24px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                padding: 20px 16px;
                gap: 12px;
                margin-bottom: 40px;
            }
            .stats-item .num {
                font-size: 28px;
            }
            .culture-section {
                grid-template-columns: 1fr;
                gap: 16px;
                margin-bottom: 40px;
            }
            .history-timeline {
                padding-left: 24px;
            }
            .history-timeline::before {
                left: 6px;
            }
            .history-item {
                padding: 0 0 24px 16px;
            }
            .history-item::before {
                left: -17px;
                width: 12px;
                height: 12px;
            }
            .history-summary {
                padding: 16px 20px;
                font-size: 14px;
            }
            .honor-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .honor-item {
                padding: 16px 12px;
            }

            /* 页脚 */
            footer {
                padding: 40px 16px 20px;
            }
            .footer-top-wrap {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
                margin-bottom: 30px;
            }
            .footer-qrcode-box {
                text-align: left;
                grid-column: 1 / -1;
            }
            .footer-qrcode {
                width: 140px;
                border-width: 6px;
            }
            .footer-copyright {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 8px;
        padding: 12px 8px;
        font-size: 12px;
    }

    /* 左侧内容：强制换行，居中，允许内部元素换行 */
    .copyright-left {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        align-items: center;
        gap: 4px 6px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }

    /* 所有文字、链接允许换行，去除强制不换行 */
    .copyright-left span,
    .copyright-left a,
    .copyright-left text {
        white-space: normal !important;
        word-break: break-word;
    }

    /* 安全图标限制尺寸，防止溢出 */
    .copyright-left .safe-icon {
        max-height: 18px;
        width: auto;
        display: inline-block;
    }

    /* 技术支持也居中，自动换行 */
    .copyright-right {
        text-align: center;
        width: 100%;
        word-break: break-word;
    }
            .back-top-btn {
                width: 48px;
                height: 48px;
                font-size: 20px;
                top: -24px;
            }
        }

        @media (max-width: 420px) {
            .page-banner {
                height: 30vh;
                min-height: 180px;
            }
            .page-banner .banner-title {
                font-size: 24px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
                padding: 16px 12px;
            }
            .stats-item .num {
                font-size: 24px;
            }
            .stats-item .label {
                font-size: 12px;
            }
            .honor-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .footer-top-wrap {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-qrcode-box {
                text-align: center;
            }
            .footer-qrcode {
                width: 120px;
            }
            .history-summary {
                padding: 14px 16px;
                font-size: 13px;
            }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: #f0f0f0;
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary-dark);
        }
        
        
        /* 所有样式限定在 .honor-module 内，避免与页面其他样式冲突 */
    .honor-module {
        font-family: inherit; /* 继承页面字体 */
    }
    .honor-module .honor-title {
        text-align: center;
        margin-bottom: 30px;
    }
    .honor-module .honor-title h2 {
        font-size: 2.25rem; /* 4xl */
        font-weight: 700;
        color: #1a1a2e;
        margin-bottom: 10px;
    }
    .honor-module .honor-divider {
        height: 3px;
        width: 80px;
        background: linear-gradient(90deg, #ff8601, #ffb74d);
        margin: 0 auto 10px;
    }
    .honor-module .honor-subtitle {
        color: #6b7280;
        margin-top: 10px;
    }
    .honor-module .honor-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
        margin-bottom: 30px;
    }
    .honor-module .honor-card {
        background: #fff;
        border-radius: 8px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.05);
        padding: 20px;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
        text-align: center;
    }
    .honor-module .honor-card:hover {
        transform: translateY(-6px);
        box-shadow: 0 15px 20px rgba(0,0,0,0.08);
    }
    .honor-module .honor-card .card-image {
        height: 260px; /* 原为 h-56 = 14rem = 224px，调整稍小一点 */
        background-color: #f3f4f6;
        border-radius: 6px;
        display: flex;
        align-items: center;
        justify-content: center;
        overflow: hidden;
        margin-bottom: 12px;
    }
    .honor-module .honor-card .card-image img {
        max-width: 100%;
        max-height: 100%;
        object-fit: contain;
        padding: 10px;
    }
    .honor-module .honor-card .card-title {
        font-weight: 700;
        font-size: 0.875rem; /* text-sm */
        color: #1a1a2e;
        line-height: 1.4;
    }
    .honor-module .honor-more {
        text-align: center;
        margin-top: 20px;
    }
    .honor-module .honor-more a {
        display: inline-block;
        padding: 10px 32px;
        background: #ff8601;
        color: #fff;
        border-radius: 30px;
        font-weight: 500;
        text-decoration: none;
        transition: background 0.3s;
        border: none;
        cursor: pointer;
    }
    .honor-module .honor-more a:hover {
        background: #e07500;
    }

    /* 响应式适配 */
    @media (max-width: 1024px) {
        .honor-module .honor-grid {
            grid-template-columns: repeat(3, 1fr);
        }
    }
    @media (max-width: 768px) {
        .honor-module .honor-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }
    @media (max-width: 480px) {
        .honor-module .honor-grid {
            grid-template-columns: 1fr;
        }
    }