<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="北京连屏科技股份有限公司 - AI应用开发、互联网开发领先企业">
    <title>北京连屏科技股份有限公司 | AI驱动的科技先锋</title>
    <link rel="preconnect" href="http://fonts.googleapis.com">
        <link rel="icon" href="./img/favicon.png" nonce="">
    <link rel="preconnect" href="http://fonts.gstatic.com" crossorigin>
    <link href="http://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap"
        rel="stylesheet">
    <style>
        /* ==================== CSS 变量 ==================== */
        :root {
            /* 主色调 - 黑红风格 */
            --color-bg-primary: #0a0a0a;
            --color-bg-secondary: #0d0d0d;
            --color-bg-tertiary: #141414;
            --color-bg-card: #111111;
            --color-bg-card-hover: #1a1a1a;

            /* 强调色 - 红色系 */
            --color-accent-primary: #C41E3A;
            --color-accent-secondary: #DC143C;
            --color-accent-tertiary: #B22222;
            --color-accent-red: #FF4444;
            --color-accent-dark: #8B0000;

            /* 文字颜色 */
            --color-text-primary: #ffffff;
            --color-text-secondary: #b0b0b0;
            --color-text-tertiary: #606060;
            --color-text-accent: #DC143C;

            /* 渐变 - 黑红渐变 */
            --gradient-primary: linear-gradient(135deg, #C41E3A 0%, #DC143C 50%, #B22222 100%);
            --gradient-secondary: linear-gradient(135deg, #B22222 0%, #C41E3A 100%);
            --gradient-dark: linear-gradient(180deg, #0a0a0a 0%, #0d0d0d 100%);
            --gradient-card: linear-gradient(145deg, rgba(196, 30, 58, 0.08) 0%, rgba(220, 20, 60, 0.03) 100%);
            --gradient-red: linear-gradient(135deg, #8B0000 0%, #C41E3A 50%, #DC143C 100%);

            /* 毛玻璃 */
            --glass-bg: rgba(13, 13, 13, 0.85);
            --glass-border: rgba(196, 30, 58, 0.25);

            /* 阴影 */
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.6);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.7);
            --shadow-glow: 0 0 40px rgba(196, 30, 58, 0.2);
            --shadow-red: 0 0 30px rgba(220, 20, 60, 0.4);

            /* 圆角 */
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --radius-full: 9999px;

            /* 间距 */
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.5rem;
            --spacing-lg: 2rem;
            --spacing-xl: 3rem;
            --spacing-2xl: 4rem;
            --spacing-3xl: 6rem;

            /* 字体 */
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

            /* 过渡 */
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.5s ease;

            /* 导航高度 */
            --nav-height: 100px;
        }

        /* ==================== 基础重置 ==================== */
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-family);
            background: var(--color-bg-primary);
            color: var(--color-text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ==================== 鼠标跟随光效 ==================== */
        .cursor-glow {
            position: fixed;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(196, 30, 58, 0.12) 0%, transparent 70%);
            pointer-events: none;
            z-index: 9999;
            transform: translate(-50%, -50%);
            transition: transform 0.1s ease-out, opacity 0.3s ease;
            opacity: 0;
        }

        .cursor-glow.active {
            opacity: 1;
        }

        /* ==================== 导航栏 ==================== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            z-index: 1000;
            transition: all var(--transition-normal);
        }

        .navbar::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 10, 15, 0.5);
            backdrop-filter: blur(0px);
            -webkit-backdrop-filter: blur(0px);
            transition: all var(--transition-normal);
            opacity: 0;
        }

        .navbar.scrolled::before {
            background: var(--glass-bg);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            opacity: 1;
            border-bottom: 1px solid var(--glass-border);
        }

        .navbar__container {
            position: relative;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .navbar__logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            z-index: 1001;
        }

        .navbar__logo-icon {
            width: 100%;
        }


        .navbar__logo-text {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text-primary);
            letter-spacing: -0.02em;
        }

        .navbar__menu {
            display: flex;
            align-items: center;
            gap: var(--spacing-xl);
        }

        .navbar__link {
            position: relative;
            padding: var(--spacing-xs) 0;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
        }

        .navbar__link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--gradient-primary);
            transition: width var(--transition-normal);
            border-radius: 1px;
        }

        .navbar__link:hover,
        .navbar__link.active {
            color: var(--color-text-primary);
        }

        .navbar__link:hover::after,
        .navbar__link.active::after {
            width: 100%;
        }

        /* 导航子菜单 */
        .navbar__item {
            position: relative;
        }

        .navbar__submenu {
            position: absolute;
            top: 100%;
            left: 0;
            background: var(--color-bg-card);
            border: 1px solid var(--glass-border);
            border-radius: 0.5rem;
            padding: var(--spacing-sm);
            min-width: 180px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all var(--transition-normal);
            z-index: 1000;
        }

        .navbar__item:hover .navbar__submenu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .navbar__submenu li {
            margin-bottom: var(--spacing-xs);
        }

        .navbar__submenu li:last-child {
            margin-bottom: 0;
        }

        .navbar__submenu .navbar__link {
            display: block;
            padding: var(--spacing-xs) var(--spacing-sm);
            border-radius: var(--radius-md);
        }

        .navbar__submenu .navbar__link:hover {
            background: var(--color-bg-secondary);
        }

        .navbar__link--cta {
            background: var(--gradient-primary);
            padding: 0.6rem 1.5rem;
            border-radius: var(--radius-full);
            color: #ffffff !important;
            font-weight: 600;
            box-shadow: var(--shadow-md), 0 0 20px rgba(196, 30, 58, 0.4);
            transition: all var(--transition-normal);
        }

        .navbar__link--cta::after {
            display: none;
        }

        .--cnavbar__linkta::after {
            display: none;
        }

        .navbar__link--cta:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg), 0 0 40px rgba(220, 20, 60, 0.6);
        }

        /* 汉堡菜单 */
        .navbar__hamburger {
            background: rgba(74, 22, 22, 0.3);
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            z-index: 1001;
            cursor: pointer;
        }

        .navbar__hamburger span {
            width: 24px;
            height: 2px;
            background: var(--color-text-primary);
            border-radius: 2px;
            transition: all var(--transition-normal);
        }

        .navbar__hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .navbar__hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .navbar__hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* 移动端菜单 */
        .mobile-menu {
            position: fixed;
            top: 0;
            right: -100%;
            width: 100%;
            max-width: 400px;
            height: 100vh;
            background: var(--color-bg-secondary);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 999;
            padding: calc(var(--nav-height) + var(--spacing-xl)) var(--spacing-lg) var(--spacing-xl);
            transition: right var(--transition-slow);
            border-left: 1px solid var(--glass-border);
        }

        .mobile-menu.active {
            right: 0;
        }

        .mobile-menu__overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.6);
            z-index: 998;
            opacity: 0;
            visibility: hidden;
            transition: all var(--transition-normal);
        }

        .mobile-menu__overlay.active {
            opacity: 1;
            visibility: visible;
        }

        .mobile-menu__list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .mobile-menu__link {
            display: block;
            padding: var(--spacing-sm) 0;
            font-size: 1.2rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-bottom: 1px solid var(--glass-border);
            transition: all var(--transition-fast);
        }

        .mobile-menu__link:hover,
        .mobile-menu__link.active {
            color: var(--color-text-primary);
            padding-left: var(--spacing-sm);
        }

        /* 移动端子菜单 */
        .mobile-menu__item.has-submenu {
            position: relative;
        }

        .mobile-menu__submenu {
            margin-left: var(--spacing-lg);
            margin-top: var(--spacing-sm);
            display: none;
        }

        .mobile-menu__item.has-submenu:hover .mobile-menu__submenu {
            display: block;
        }

        .mobile-menu__submenu .mobile-menu__link {
            font-size: 1rem;
            padding: var(--spacing-xs) 0;
        }

        /* ==================== Hero Banner ==================== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--gradient-dark);
        }

        .hero__bg {
            position: absolute;
            inset: 0;
            overflow: hidden;
        }

        .hero__bg-gradient {
            position: absolute;
            width: 800px;
            height: 800px;
            border-radius: 50%;
            filter: blur(120px);
            opacity: 0.3;
            animation: float 20s ease-in-out infinite;
        }

        .hero__bg-gradient--1 {
            top: -20%;
            right: -10%;
            background: var(--color-accent-dark);
            opacity: 0.2;
        }

        .hero__bg-gradient--2 {
            bottom: -30%;
            left: -20%;
            background: var(--color-accent-primary);
            animation-delay: -10s;
            opacity: 0.15;
        }

        .hero__bg-image {
            width: 100%;
            z-index: 1;
        }

        .hero__bg-grid {
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 60px 60px;
            mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
            -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
        }

        @keyframes float {

            0%,
            100% {
                transform: translate(0, 0) scale(1);
            }

            25% {
                transform: translate(50px, -50px) scale(1.1);
            }

            50% {
                transform: translate(0, -100px) scale(1);
            }

            75% {
                transform: translate(-50px, -50px) scale(1.1);
            }
        }

        .hero__container {
            position: relative;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
            width: 100%;
            z-index: 1;
        }

        .hero__content {
            max-width: 800px;
        }

        .hero__badge {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-xs);
            padding: 0.5rem 1rem;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            color: var(--color-accent-red);
            margin-bottom: var(--spacing-lg);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .hero__badge::before {
            content: '';
            width: 8px;
            height: 8px;
            background: var(--color-accent-red);
            border-radius: 50%;
            animation: pulse 2s ease-in-out infinite;
        }

        @keyframes pulse {

            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }

            50% {
                opacity: 0.5;
                transform: scale(1.2);
            }
        }

        .hero__title {
            font-size: clamp(2.5rem, 6vw, 4.5rem);
            font-weight: 800;
            line-height: 1.1;
            letter-spacing: -0.03em;
            margin-bottom: var(--spacing-lg);
        }

        .hero__title-gradient {
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero__subtitle {
            font-size: clamp(1rem, 2vw, 1.25rem);
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: var(--spacing-xl);
            max-width: 700px;
        }

        .hero__buttons {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-xs);
            padding: 1rem 2rem;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius-full);
            transition: all var(--transition-normal);
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }

        .btn::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 0;
            height: 0;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            transform: translate(-50%, -50%);
            transition: width 0.6s ease, height 0.6s ease;
        }

        .btn:hover::before {
            width: 300px;
            height: 300px;
        }

        .btn--primary {
            background: var(--gradient-primary);
            color: #ffffff;
            box-shadow: var(--shadow-md), 0 0 30px rgba(196, 30, 58, 0.4);
        }

        .btn--primary:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg), 0 0 50px rgba(220, 20, 60, 0.6);
        }

        .btn--secondary {
            background: transparent;
            color: var(--color-text-primary);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .btn--secondary:hover {
            background: var(--glass-bg);
            border-color: var(--color-accent-primary);
            transform: translateY(-3px);
        }

        .hero__scroll {
            position: absolute;
            bottom: var(--spacing-xl);
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: var(--spacing-xs);
            color: var(--color-text-tertiary);
            font-size: 0.85rem;
            animation: bounce 2s ease-in-out infinite;
        }

        .hero__scroll-icon {
            width: 24px;
            height: 40px;
            border: 2px solid var(--color-text-tertiary);
            border-radius: 12px;
            position: relative;
        }

        .hero__scroll-icon::before {
            content: '';
            position: absolute;
            top: 8px;
            left: 50%;
            transform: translateX(-50%);
            width: 4px;
            height: 8px;
            background: var(--color-text-tertiary);
            border-radius: 2px;
            animation: scrollDown 2s ease-in-out infinite;
        }

        @keyframes bounce {

            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }

            50% {
                transform: translateX(-50%) translateY(10px);
            }
        }

        @keyframes scrollDown {

            0%,
            100% {
                opacity: 1;
                transform: translateX(-50%) translateY(0);
            }

            50% {
                opacity: 0.3;
                transform: translateX(-50%) translateY(10px);
            }
        }

        /* ==================== Section 通用样式 ==================== */
        .section {
            padding: var(--spacing-3xl) 0;
            position: relative;
        }

        .section__container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
        }

        .section__header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto var(--spacing-2xl);
        }

        .section__label {
            display: inline-block;
            padding: 0.4rem 1rem;
            background: var(--gradient-card);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-accent-primary);
            margin-bottom: var(--spacing-md);
        }

        .section__title {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: var(--spacing-md);
        }

        .section__subtitle {
            font-size: 1.1rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* 入场动画 */
        .animate-on-scroll {
            opacity: 0;
            transform: translateY(40px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .animate-on-scroll.animated {
            opacity: 1;
            transform: translateY(0);
        }

        .animate-delay-1 {
            transition-delay: 0.1s;
        }

        .animate-delay-2 {
            transition-delay: 0.2s;
        }

        .animate-delay-3 {
            transition-delay: 0.3s;
        }

        .animate-delay-4 {
            transition-delay: 0.4s;
        }

        .animate-delay-5 {
            transition-delay: 0.5s;
        }

        /* ==================== 企业简介 ==================== */
        .about {
            background: var(--color-bg-secondary);
            position: relative;
            overflow: hidden;
        }

        .about::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
        }

        .about__grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
        }

        .about__image {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            aspect-ratio: 4/3;
            background: var(--color-bg-tertiary);
        }

        .about__image-placeholder {
            position: absolute;
            inset: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            background: var(--gradient-card);
            border: 1px solid var(--glass-border);
            color: var(--color-text-tertiary);
        }

        .about__image-placeholder img {
            width: 100%;
        }

        .about__image::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-xl);
            border: 1px solid var(--glass-border);
            pointer-events: none;
        }

        .about__content {
            padding: var(--spacing-lg) 0;
        }

        /* ==================== 核心优势 ==================== */
        .features {
            position: relative;
        }

        .features__grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
        }

        .feature-card {
            padding: var(--spacing-xl);
            background: var(--color-bg-card);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-xl);
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gradient-primary);
            opacity: 0;
            transition: opacity var(--transition-normal);
        }

        .feature-card:hover {
            transform: translateY(-8px);
            background: var(--color-bg-card-hover);
            border-color: var(--color-accent-primary);
            box-shadow: var(--shadow-lg), var(--shadow-red);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-card__icon {
            width: 60px;
            height: 60px;
            background: var(--gradient-primary);
            border-radius: var(--radius-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: var(--spacing-lg);
            font-size: 1.5rem;
        }

        .feature-card__title {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
        }

        .feature-card__desc {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ==================== 数据统计 ==================== */
        .stats {
            background: var(--color-bg-secondary);
            padding: var(--spacing-2xl) 0;
            position: relative;
            overflow: hidden;
        }

        .stats::before,
        .stats::after {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            filter: blur(100px);
            opacity: 0.1;
        }

        .stats::before {
            top: -200px;
            left: -100px;
            background: var(--color-accent-primary);
        }

        .stats::after {
            bottom: -200px;
            right: -100px;
            background: var(--color-accent-tertiary);
        }

        .stats__grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            position: relative;
            z-index: 1;
        }

        .stat-item {
            text-align: center;
            padding: var(--spacing-lg);
        }

        .stat-item__value {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 800;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1;
            margin-bottom: var(--spacing-sm);
        }

        .stat-item__suffix {
            font-size: clamp(1.5rem, 3vw, 2rem);
        }

        .stat-item__label {
            font-size: 1rem;
            color: var(--color-text-secondary);
            font-weight: 500;
        }

        /* ==================== 解决方案 ==================== */
        .solutions {
            position: relative;
        }

        .solutions__grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-lg);
        }

        .solution-card {
            position: relative;
            padding: var(--spacing-xl);
            background: var(--color-bg-card);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: all var(--transition-normal);
            cursor: pointer;
            perspective: 1000px;
        }

        .solution-card:hover {
            transform: translateY(-8px);
            border-color: var(--color-accent-primary);
            box-shadow: var(--shadow-lg);
        }

        .solution-card__bg {
            position: absolute;
            top: 0;
            right: 0;
            width: 200px;
            height: 200px;
            background: var(--gradient-primary);
            opacity: 0.05;
            border-radius: 0 0 0 100%;
            transition: all var(--transition-normal);
        }

        .solution-card:hover .solution-card__bg {
            opacity: 0.1;
            width: 250px;
            height: 250px;
        }

        .solution-card__number {
            font-size: 4rem;
            font-weight: 800;
            color: var(--color-bg-tertiary);
            position: absolute;
            top: var(--spacing-md);
            right: var(--spacing-lg);
            line-height: 1;
            transition: color var(--transition-normal);
        }

        .solution-card:hover .solution-card__number {
            color: rgba(196, 30, 58, 0.08);
        }

        .solution-card__icon {
            width: 56px;
            height: 56px;
            background: var(--gradient-primary);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: var(--spacing-lg);
            font-size: 1.5rem;
        }

        .solution-card__title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
        }

        .solution-card__desc {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
        }

        .solution-card__tags {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
        }

        .solution-card__tag {
            padding: 0.4rem 0.8rem;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            color: var(--color-text-secondary);
        }

        /* ==================== 产品特色 3D卡片 ==================== */
        .products {
            background: var(--color-bg-secondary);
        }

        .products__grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .product-card-3d {
            position: relative;
            height: 400px;
            perspective: 1000px;
            cursor: pointer;
        }

        .product-card-3d__inner {
            position: relative;
            width: 100%;
            height: 100%;
            transition: transform 0.6s ease;
            transform-style: preserve-3d;
        }

        .product-card-3d:hover .product-card-3d__inner {
            transform: rotateY(0deg) rotateX(0deg);
        }

        .product-card-3d__face {
            position: absolute;
            inset: 0;
            backface-visibility: hidden;
            border-radius: var(--radius-xl);
            background: var(--color-bg-card);
            border: 1px solid var(--glass-border);
            padding: var(--spacing-xl);
            display: flex;
            flex-direction: column;
        }

        .product-card-3d__face--front {
            transform: rotateX(0deg);
        }

        .product-card-3d__face--back {
            transform: rotateY(180deg);
            background: var(--gradient-card);
            justify-content: center;
            align-items: center;
            text-align: center;
        }

        .product-card-3d__image>img {
            border-radius: var(--radius-lg);
            width: 100%;
        }

        .product-card-3d__title {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: var(--spacing-xs);
        }

        .product-card-3d__subtitle {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
        }

        .product-card-3d__back-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: var(--spacing-md);
        }

        .product-card-3d__back-desc {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
        }

        /* ==================== 合作伙伴 ==================== */
        .partners {
            position: relative;
        }

        .partners__grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: var(--spacing-md);
        }


        .partner-logo img {
            aspect-ratio: 3/2;
            border: 4px solid var(--glass-border);
            transition: all var(--transition-normal);
            width: 100%;
            border-radius: var(--radius-lg);
        }

        .partner-logo:hover {
            background: var(--color-bg-card-hover);
            border-color: var(--color-accent-primary);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        /* ==================== 客户价值 ==================== */
        .values {
            padding: var(--spacing-3xl) 0;
            margin-top: var(--spacing-xl);
        }

        .values__grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
            margin-top: var(--spacing-xl);
        }

        .value-card {
            position: relative;
            padding: var(--spacing-xl);
            background: var(--color-bg-card);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-xl);
            transition: all var(--transition-normal);
        }

        .value-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gradient-primary);
            opacity: 0;
            transition: opacity var(--transition-normal);
        }

        .value-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .value-card:hover::before {
            opacity: 1;
        }

        .value-card__number {
            font-size: 3rem;
            font-weight: 800;
            color: rgba(196, 30, 58, 0.1);
            line-height: 1;
            margin-bottom: var(--spacing-md);
        }

        .value-card__title {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
        }

        .value-card__desc {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ==================== 案例中心 (预留) ==================== */
        .cases {
            background: var(--color-bg-secondary);
        }

        .cases__grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .case-card {
            position: relative;
            aspect-ratio: 16/10;
            background: var(--color-bg-card);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-xl);
            overflow: hidden;
            cursor: pointer;
            transition: all var(--transition-normal);
        }

        .case-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-accent-primary);
        }

        .case-card__image {
            position: absolute;
            inset: 0;
            background: var(--gradient-card);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-tertiary);
        }

        .case-card__overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 0%, rgba(10, 10, 15, 0.95) 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: var(--spacing-lg);
        }

        .case-card__tag {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            background: var(--gradient-primary);
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
            width: fit-content;
        }

        .case-card__title {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: var(--spacing-xs);
        }

        .case-card__desc {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
        }

        .cases__placeholder {
            text-align: center;
            padding: var(--spacing-2xl);
            background: var(--glass-bg);
            border: 1px dashed var(--glass-border);
            border-radius: var(--radius-xl);
            color: var(--color-text-tertiary);
        }

        /* ==================== 联系我们 ==================== */
        .contact {
            position: relative;
        }

        .contact__grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-2xl);
            max-width: 1400px;
            margin: 0 auto;
        }

        .contact__info {
            padding: var(--spacing-xl);
            background: var(--color-bg-card);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-xl);
        }

        .contact__info-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: var(--spacing-lg);
        }

        .contact__info-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-lg);
        }

        .contact__info-item {
            display: flex;
            gap: var(--spacing-md);
        }

        .contact__info-icon {
            width: 48px;
            height: 48px;
            background: var(--gradient-primary);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .contact__info-label {
            font-size: 0.85rem;
            color: var(--color-text-tertiary);
            margin-bottom: 0.25rem;
        }

        .contact__info-value {
            font-size: 1rem;
            font-weight: 500;
        }

        /* ==================== 页脚 ==================== */
        .footer {
            background: var(--color-bg-secondary);
            padding: var(--spacing-2xl) 0 var(--spacing-lg);
            position: relative;
        }

        .footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
        }

        .footer__container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
        }

        .footer__top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-2xl);
            margin-bottom: var(--spacing-2xl);
        }

        .footer__brand {
            max-width: 300px;
        }

        .footer__logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-md);
        }

        .footer__logo-icon {
            width: 40%;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
        }

        .footer__logo-text {
            font-size: 1.1rem;
            font-weight: 600;
        }

        .footer__desc {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        .footer__column-title {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: var(--spacing-md);
        }

        .footer__links {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .footer__link {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
        }

        .footer__link:hover {
            color: var(--color-text-primary);
        }

        .footer__bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: var(--spacing-lg);
            border-top: 1px solid var(--glass-border);
        }

        .footer__copyright {
            font-size: 0.85rem;
            color: var(--color-text-tertiary);
        }

        .footer__socials {
            display: flex;
            gap: var(--spacing-sm);
        }

        .footer__social {
            width: 40px;
            height: 40px;
            background: var(--color-bg-card);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
        }

        .footer__social:hover {
            background: var(--gradient-primary);
            border-color: transparent;
            color: white;
            transform: translateY(-2px);
        }

        /* ==================== 响应式设计 ==================== */
        @media (max-width: 1200px) {
            .features__grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .stats__grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .products__grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .partners__grid {
                grid-template-columns: repeat(4, 1fr);
            }

            .footer__top {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 992px) {
            .navbar__menu {
                display: none;
            }

            .navbar__hamburger {
                display: flex;
            }

            .about__grid {
                grid-template-columns: 1fr;
            }

            .about__image {
                order: -1;
            }

            .solutions__grid {
                grid-template-columns: 1fr;
            }

            .cases__grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .contact__grid {
                grid-template-columns: 3fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 70px;
            }

            .section {
                padding: var(--spacing-2xl) 0;
            }

            .hero__buttons {
                flex-direction: column;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }

            .features__grid,
            .stats__grid,
            .products__grid {
                grid-template-columns: 1fr;
            }

            .partners__grid {
                grid-template-columns: repeat(3, 1fr);
            }

            .cases__grid {
                grid-template-columns: 1fr;
            }

            .form-row {
                grid-template-columns: 1fr;
            }

            .footer__top {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
            }

            .footer__bottom {
                flex-direction: column;
                gap: var(--spacing-md);
                text-align: center;
            }
        }

        @media (max-width: 480px) {
            .hero__scroll {
                display: none;
            }

            .partners__grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ==================== 图片懒加载 ==================== */
        .lazy-image {
            opacity: 0;
            transition: opacity 0.5s ease;
        }

        .lazy-image.loaded {
            opacity: 1;
        }

        /* ==================== 预留页面提示 ==================== */
        .page-placeholder {
            min-height: 60vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: var(--spacing-2xl);
        }

        .page-placeholder__icon {
            width: 100px;
            height: 100px;
            background: var(--gradient-primary);
            border-radius: var(--radius-xl);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.5rem;
            margin-bottom: var(--spacing-lg);
            opacity: 0.8;
        }

        .page-placeholder__title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
        }

        .page-placeholder__desc {
            color: var(--color-text-secondary);
            margin-bottom: var(--spacing-lg);
        }
    </style>
</head>

<body>
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            const parallaxElements = document.querySelectorAll('[data-parallax]');

            window.addEventListener('scroll', function () {
                parallaxElements.forEach(el => {
                    const speed = parseFloat(el.getAttribute('data-parallax'));
                    const yPos = -(window.scrollY * speed);
                    el.style.transform = `translateY(${yPos}px)`;
                });
            });
        }

        // ==================== 图片懒加载 ====================
        function initLazyLoading() {
            const lazyImages = document.querySelectorAll('img[data-src]');

            const imageObserver = new IntersectionObserver((entries) => {
                entries.forEach(entry => {
                    if (entry.isIntersecting) {
                        const img = entry.target;
                        img.src = img.getAttribute('data-src');
                        img.classList.add('loaded');
                        imageObserver.unobserve(img);
                    }
                });
            });

            lazyImages.forEach(img => imageObserver.observe(img));
        }


        // ==================== 关闭移动端菜单（全局函数） ====================
        function closeMobileMenu() {
            const hamburger = document.getElementById('hamburger');
            const mobileMenu = document.getElementById('mobileMenu');
            const mobileOverlay = document.getElementById('mobileOverlay');

            hamburger.classList.remove('active');
            mobileMenu.classList.remove('active');
            mobileOverlay.classList.remove('active');
            document.body.style.overflow = '';
        }
    </script>
</body>

</html>