/* ===== 基础重置 & 全局 ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background: #f8f9fc;
            color: #1e2a3a;
            line-height: 1.7;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.3s ease;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 商务稳重蓝 配色 ===== */
        :root {
            --primary: #0a2e5c;
            --primary-light: #1a4f85;
            --primary-mid: #2a6a9a;
            --primary-lighter: #3d8bbf;
            --accent-gold: #c9a84c;
            --accent-gold-light: #e0c878;
            --bg-light: #f8f9fc;
            --bg-card: #ffffff;
            --text-dark: #1e2a3a;
            --text-muted: #5a6a7a;
            --shadow-sm: 0 4px 20px rgba(10, 46, 92, 0.08);
            --shadow-hover: 0 12px 40px rgba(10, 46, 92, 0.15);
            --radius: 16px;
            --radius-sm: 10px;
        }

        /* ===== 滚动渐显动画 ===== */
        .reveal {
            opacity: 0;
            transform: translateY(40px);
            transition: opacity 0.7s cubic-bezier(0.23, 1, 0.32, 1), transform 0.7s cubic-bezier(0.23, 1, 0.32, 1);
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-left {
            opacity: 0;
            transform: translateX(-40px);
            transition: opacity 0.7s cubic-bezier(0.23, 1, 0.32, 1), transform 0.7s cubic-bezier(0.23, 1, 0.32, 1);
        }

        .reveal-left.visible {
            opacity: 1;
            transform: translateX(0);
        }

        .reveal-right {
            opacity: 0;
            transform: translateX(40px);
            transition: opacity 0.7s cubic-bezier(0.23, 1, 0.32, 1), transform 0.7s cubic-bezier(0.23, 1, 0.32, 1);
        }

        .reveal-right.visible {
            opacity: 1;
            transform: translateX(0);
        }

        /* ===== 导航 ===== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 46, 92, 0.96);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.4s ease, box-shadow 0.4s ease;
        }

        .navbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .navbar .logo {
            font-size: 22px;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .navbar .logo .logo-accent {
            color: var(--accent-gold-light);
            font-weight: 400;
        }

        .navbar .nav-menu {
            display: flex;
            align-items: center;
            gap: 36px;
            list-style: none;
        }

        .navbar .nav-menu a {
            color: rgba(255, 255, 255, 0.82);
            font-size: 15px;
            font-weight: 500;
            position: relative;
            padding: 4px 0;
            transition: color 0.3s ease;
        }

        .navbar .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            transition: width 0.35s ease;
        }

        .navbar .nav-menu a:hover {
            color: #ffffff;
        }

        .navbar .nav-menu a:hover::after {
            width: 100%;
        }

        .navbar .nav-phone {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--accent-gold-light);
            font-size: 16px;
            font-weight: 600;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .navbar .nav-phone .phone-icon {
            font-size: 18px;
        }

        /* 移动端汉堡 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 4px 0;
            background: none;
            border: none;
        }

        .hamburger span {
            width: 28px;
            height: 2.5px;
            background: #ffffff;
            border-radius: 4px;
            transition: 0.3s ease;
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* ===== Banner ===== */
        .banner {
            padding: 160px 0 100px;
            background: linear-gradient(135deg, #071b36 0%, #0a2e5c 40%, #1a4f85 70%, #0a2e5c 100%);
            position: relative;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }

        .banner::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(201, 168, 76, 0.08) 0%, transparent 70%);
            animation: glowFloat 12s ease-in-out infinite alternate;
        }

        .banner::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(61, 139, 191, 0.10) 0%, transparent 70%);
            animation: glowFloat 10s ease-in-out infinite alternate-reverse;
        }

        @keyframes glowFloat {
            0% {
                transform: translate(0, 0) scale(1);
            }
            100% {
                transform: translate(40px, -30px) scale(1.1);
            }
        }

        .banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .banner .banner-title {
            font-size: clamp(36px, 6vw, 64px);
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 2px;
            line-height: 1.2;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.25);
            margin-bottom: 16px;
        }

        .banner .banner-title .highlight {
            color: var(--accent-gold-light);
        }

        .banner .banner-sub {
            font-size: clamp(16px, 2.2vw, 24px);
            color: rgba(255, 255, 255, 0.85);
            font-weight: 400;
            letter-spacing: 4px;
            margin-bottom: 32px;
            opacity: 0;
            animation: fadeUp 1s ease 0.4s forwards;
        }

        .banner .banner-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px 28px;
            opacity: 0;
            animation: fadeUp 1s ease 0.8s forwards;
        }

        .banner .banner-tags span {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.92);
            background: rgba(255, 255, 255, 0.08);
            padding: 8px 24px;
            border-radius: 40px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            -webkit-backdrop-filter: blur(4px);
            backdrop-filter: blur(4px);
            letter-spacing: 1px;
            font-weight: 400;
            transition: 0.3s ease;
        }

        .banner .banner-tags span:hover {
            background: rgba(201, 168, 76, 0.20);
            border-color: var(--accent-gold);
            transform: translateY(-3px);
        }

        /* 打字动效 */
        .typing-wrapper {
            display: inline-block;
            position: relative;
        }

        .typing-wrapper .cursor {
            display: inline-block;
            width: 3px;
            height: 1em;
            background: var(--accent-gold-light);
            margin-left: 4px;
            vertical-align: text-bottom;
            animation: blink 0.8s step-end infinite;
        }

        @keyframes blink {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0;
            }
        }

        @keyframes fadeUp {
            0% {
                opacity: 0;
                transform: translateY(30px);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .banner .banner-scroll-hint {
            margin-top: 48px;
            color: rgba(255, 255, 255, 0.3);
            font-size: 13px;
            letter-spacing: 2px;
            animation: bounceDown 2s ease-in-out infinite;
        }

        @keyframes bounceDown {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(8px);
            }
        }

        /* ===== 公司介绍 ===== */
        .about-section {
            padding: 90px 0 80px;
            background: #ffffff;
        }

        .about-section .about-grid {
            display: flex;
            align-items: center;
            gap: 60px;
        }

        .about-section .about-text {
            flex: 1;
            min-width: 0;
        }

        .about-section .about-text .section-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-lighter);
            letter-spacing: 4px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .about-section .about-text h2 {
            font-size: clamp(28px, 3.4vw, 40px);
            font-weight: 700;
            color: var(--primary);
            line-height: 1.25;
            margin-bottom: 20px;
        }

        .about-section .about-text p {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 18px;
            line-height: 1.8;
        }

        .about-section .about-text .about-phone {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--bg-light);
            padding: 12px 28px;
            border-radius: 60px;
            border: 1px solid rgba(10, 46, 92, 0.08);
            margin-top: 8px;
            font-size: 18px;
            font-weight: 600;
            color: var(--primary);
        }

        .about-section .about-text .about-phone .icon {
            font-size: 22px;
        }

        .about-section .about-image {
            flex: 0 0 600px;
            width: 600px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            transition: transform 0.5s ease;
        }

        .about-section .about-image:hover {
            transform: scale(1.01);
        }

        .about-section .about-image img {
            width: 100%;
            height: 350px;
            object-fit: cover;
            border-radius: var(--radius);
        }

        /* ===== 产品服务 ===== */
        .products-section {
            padding: 80px 0 70px;
            background: var(--bg-light);
        }

        .products-section .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .products-section .section-header .section-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-lighter);
            letter-spacing: 4px;
            text-transform: uppercase;
            margin-bottom: 8px;
        }

        .products-section .section-header h2 {
            font-size: clamp(28px, 3.4vw, 40px);
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .products-section .section-header p {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto;
        }

        .product-series {
            margin-bottom: 64px;
        }

        .product-series:last-child {
            margin-bottom: 0;
        }

        .product-series .series-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 28px;
            padding-left: 20px;
            border-left: 4px solid var(--accent-gold);
        }

        .product-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .product-card {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform 0.4s ease, box-shadow 0.4s ease;
            cursor: default;
        }

        .product-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }

        .product-card .product-img {
            width: 100%;
            aspect-ratio: 1 / 1;
            object-fit: cover;
            display: block;
            transition: transform 0.6s ease;
        }

        .product-card:hover .product-img {
            transform: scale(1.04);
        }

        .product-card .product-name {
            padding: 16px 16px 18px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            text-align: center;
            letter-spacing: 0.3px;
            border-top: 1px solid rgba(10, 46, 92, 0.05);
            background: #ffffff;
        }

        .product-card .product-name .a-tag {
            color: var(--primary-lighter);
            font-weight: 500;
        }

        /* ===== 底部 ===== */
        .footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.80);
            padding: 48px 0 32px;
        }

        .footer .footer-inner {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .footer .footer-brand {
            text-align: center;
        }

        .footer .footer-brand .f-logo {
            font-size: 22px;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 1px;
        }

        .footer .footer-brand .f-logo .accent {
            color: var(--accent-gold-light);
            font-weight: 400;
        }

        .footer .footer-brand p {
            margin-top: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer .footer-contact {
            text-align: center;
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
        }

        .footer .footer-contact .phone-lg {
            font-size: 22px;
            font-weight: 700;
            color: var(--accent-gold-light);
            letter-spacing: 1px;
        }

        /* 友情链接 */
        .friend-links {
            padding: 20px 0 8px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 8px;
            text-align: center;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px 24px;
        }

        .friend-links a {
            color: rgba(255, 255, 255, 0.45);
            font-size: 13px;
            transition: color 0.3s ease;
            letter-spacing: 0.3px;
        }

        .friend-links a:hover {
            color: var(--accent-gold-light);
        }

        .footer .footer-copy {
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            margin-top: 4px;
        }

        /* ===== 移动端浮动拨号 ===== */
        .float-phone {
            position: fixed;
            bottom: 28px;
            right: 28px;
            z-index: 999;
            width: 58px;
            height: 58px;
            background: var(--accent-gold);
            border-radius: 50%;
            display: none;
            align-items: center;
            justify-content: center;
            box-shadow: 0 6px 28px rgba(201, 168, 76, 0.40);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            color: #ffffff;
            font-size: 26px;
            text-decoration: none;
        }

        .float-phone:hover {
            transform: scale(1.08);
            box-shadow: 0 8px 36px rgba(201, 168, 76, 0.55);
        }

        .float-phone .icon {
            line-height: 1;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .about-section .about-image {
                flex: 0 0 460px;
                width: 460px;
            }

            .about-section .about-image img {
                height: 280px;
            }
        }

        @media (max-width: 900px) {
            .product-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 768px) {
            /* 导航 */
            .navbar .nav-menu {
                position: fixed;
                top: 72px;
                left: 0;
                width: 100%;
                background: rgba(10, 46, 92, 0.98);
                -webkit-backdrop-filter: blur(12px);
                backdrop-filter: blur(12px);
                flex-direction: column;
                gap: 0;
                padding: 16px 24px 28px;
                transform: translateY(-110%);
                transition: transform 0.4s ease;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
            }

            .navbar .nav-menu.active {
                transform: translateY(0);
            }

            .navbar .nav-menu li {
                width: 100%;
            }

            .navbar .nav-menu a {
                display: block;
                padding: 14px 0;
                font-size: 17px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }

            .navbar .nav-menu a::after {
                display: none;
            }

            .navbar .nav-phone {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            /* 公司介绍 */
            .about-section .about-grid {
                flex-direction: column;
                gap: 36px;
            }

            .about-section .about-image {
                flex: 0 0 100%;
                width: 100%;
                max-width: 600px;
            }

            .about-section .about-image img {
                height: auto;
                max-height: 300px;
            }

            /* 产品 */
            .product-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .product-card .product-name {
                font-size: 14px;
                padding: 12px 10px 14px;
            }

            /* Banner */
            .banner {
                padding: 130px 0 70px;
                min-height: 400px;
            }

            .banner .banner-tags {
                gap: 12px 16px;
            }

            .banner .banner-tags span {
                font-size: 14px;
                padding: 6px 18px;
            }

            /* 浮动拨号 */
            .float-phone {
                display: flex;
                bottom: 20px;
                right: 20px;
                width: 54px;
                height: 54px;
                font-size: 24px;
            }

            .footer .footer-contact .phone-lg {
                font-size: 18px;
            }
        }

        @media (max-width: 480px) {
            .product-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .navbar .logo {
                font-size: 18px;
            }

            .banner .banner-title {
                font-size: 28px;
            }

            .about-section .about-text h2 {
                font-size: 24px;
            }

            .about-section .about-text p {
                font-size: 15px;
            }

            .about-section .about-text .about-phone {
                font-size: 16px;
                padding: 10px 20px;
            }

            .product-series .series-title {
                font-size: 20px;
                padding-left: 14px;
            }

            .float-phone {
                width: 48px;
                height: 48px;
                font-size: 22px;
                bottom: 16px;
                right: 16px;
            }
        }

        /* 滚动条美化 */
        ::-webkit-scrollbar {
            width: 6px;
        }

        ::-webkit-scrollbar-track {
            background: #eef1f5;
        }

        ::-webkit-scrollbar-thumb {
            background: var(--primary-lighter);
            border-radius: 10px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary-mid);
        }

        /* 选中高亮 */
        ::selection {
            background: var(--accent-gold);
            color: var(--primary);
        }