/* === 基础样式 === */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }
        
        :root {
            --primary: #1a365d; /* 深蓝 - 专业可靠 */
            --secondary: #e63946; /* 活力红 - 运动激情 */
            --accent: #ff9e1b; /* 活力橙 - 品牌主色 */
            --light: #f9f9f9; /* 背景浅色 */
            --dark: #242424; /* 深色文本 */
            --text: #444444; /* 主要文本 */
        }
        
        body {
            background-color: var(--light);
            color: var(--text);
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background-color: var(--secondary);
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        }
        
        .btn:hover {
            background-color: #c1121f;
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
        }
        
        section {
            padding: 80px 0;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }
        
        .section-title h2 {
            font-size: 2.8rem;
            color: var(--primary);
            position: relative;
            display: inline-block;
            padding-bottom: 15px;
        }
        
        .section-title h2:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(to right, var(--primary), var(--secondary));
            border-radius: 2px;
        }
        
        /* === 导航栏 === */
        header {
            background-color: white;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
        }
        
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        
        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
        }
        
        .logo span {
            color: var(--secondary);
        }
        .logo {
            position: relative; /* 建立定位上下文 */
            display: flex;
            align-items: center; /* 垂直居中 */
        }

        .logo span {
            display: inline-block;
            margin-left: 10px; /* 文字和图片间距 */
        }

        .logo img {
            height: 50px; /* 图片高度 */
            width: auto; /* 保持原始宽高比 */
            vertical-align: middle; /* 图片垂直居中 */
            /* filter: drop-shadow(1px 1px 1px rgba(0,0,0,0.1)); 增加微阴影增强立体感 */
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        
        .nav-links li {
            margin-left: 2rem;
        }
        
        .nav-links a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 600;
            transition: all 0.3s ease;
            position: relative;
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--secondary);
            transition: all 0.3s ease;
        }
        
        .nav-links a:hover::after {
            width: 100%;
        }
        
        .nav-links a:hover {
            color: var(--secondary);
        }
        
        .menu-toggle {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
        }
        
        /* === 响应式导航 - 与index.html完全一致 === */
        @media screen and (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                background: white;
                width: 100%;
                flex-direction: column;
                align-items: center;
                padding: 20px 0;
                box-shadow: 0 5px 10px rgba(0,0,0,0.1);
                transform: translateY(-100vh);
                transition: transform 0.4s ease-in-out;
                z-index: 999;
            }
            
            .nav-links.active {
                transform: translateY(0);
            }
            
            .nav-links li {
                margin: 15px 0;
                width: 100%;
                text-align: center;
            }
            
            .nav-links a {
                display: block;
                padding: 10px 0;
                width: 100%;
            }
            
            .menu-toggle {
                display: block;
                font-size: 1.8rem;
                cursor: pointer;
            }
        }
        
        /* === Hero区域 === */
        .hero {
            background: linear-gradient(105deg, rgba(26, 54, 93, 0.9) 30%, rgba(255, 158, 27, 0.7) 100%), url('https://images.unsplash.com/photo-1534438327276-14e5300c3a48?ixlib=rb-4.0.3&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=1920&q=80') no-repeat center center/cover;
            height: 97.5vh;
            display: flex;
            align-items: center;
            color: white;
            text-align: center;
        }
        
        .hero-content {
            max-width: 800px;
            margin: 0 auto;
            padding: 0 20px;
            margin-top:60px;
        }
        
        .hero h2 {
            font-size: 3.5rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        }
        
        .hero p {
            font-size: 1.5rem;
            margin-bottom: 40px;
            font-weight: 300;
        }
        
        /* === 品牌故事 === */
        .brand-story {
            background-color: white;
        }
        
        .company-info {
            text-align: center;
            margin-bottom: 50px;
            background: linear-gradient(to right, transparent, var(--light), transparent);
            padding: 30px;
            border-radius: 10px;
            max-width: 800px;
            margin: 0 auto 50px;
        }
        
        .company-info h3 {
            color: var(--secondary);
            font-size: 2rem;
            margin-bottom: 15px;
        }
        
        .company-info p {
            font-size: 1.1rem;
            color: var(--dark);
            line-height: 1.8;
            margin-bottom: 10px;
        }
        
        .company-info strong {
            color: var(--primary);
            font-weight: 700;
        }
        
        /* === 时间线 === */
        .timeline-container {
            position: relative;
            max-width: 800px;
            margin: 50px auto;
        }
        
        .timeline-container:after {
            content: '';
            position: absolute;
            width: 4px;
            background-color: var(--accent);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -2px;
            border-radius: 2px;
        }
        
        .timeline-item {
            padding: 10px 40px;
            position: relative;
            width: 50%;
            opacity: 0;
            transform: translateY(30px);
            animation: fadeInUp 0.8s ease forwards;
        }
        
        .timeline-item:nth-child(odd) {
            left: 0;
            animation-delay: 0.3s;
        }
        
        .timeline-item:nth-child(even) {
            left: 50%;
            animation-delay: 0.6s;
        }
        
        .timeline-content {
            padding: 20px;
            background-color: white;
            position: relative;
            border-radius: 10px;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }
        
        .timeline-content:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
        }
        
        .timeline-item:nth-child(odd) .timeline-content:after {
            content: '';
            position: absolute;
            border-style: solid;
            border-width: 10px 0 10px 10px;
            border-color: transparent transparent transparent white;
            top: 20px;
            right: -10px;
        }
        
        .timeline-item:nth-child(even) .timeline-content:after {
            content: '';
            position: absolute;
            border-style: solid;
            border-width: 10px 10px 10px 0;
            border-color: transparent white transparent transparent;
            top: 20px;
            left: -10px;
        }
        
        .timeline-content h3 {
            color: var(--secondary);
            font-size: 1.4rem;
            margin-bottom: 10px;
        }
        
        .timeline-content .date {
            color: var(--accent);
            font-weight: 700;
            margin-bottom: 10px;
            display: block;
        }
        
        .timeline-content p {
            color: var(--dark);
        }
        
        .timeline-item:nth-child(odd):after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            background-color: white;
            border: 4px solid var(--accent);
            top: 20px;
            right: -10px;
            border-radius: 50%;
            z-index: 1;
        }
        
        .timeline-item:nth-child(even):after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            background-color: white;
            border: 4px solid var(--accent);
            top: 20px;
            left: -10px;
            border-radius: 50%;
            z-index: 1;
        }
        
        /* === 品牌价值观 === */
        .values {
            background: linear-gradient(135deg, var(--light) 0%, #eef2f6 100%);
        }
        
        .values-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .value-card {
            background-color: white;
            border-radius: 10px;
            padding: 40px 30px;
            text-align: center;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.05);
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }
        
        .value-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
        }
        
        .value-card:after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(to right, var(--secondary), var(--accent));
        }
        
        .value-icon {
            font-size: 3rem;
            color: var(--accent);
            margin-bottom: 20px;
        }
        
        .value-card h3 {
            color: var(--primary);
            font-size: 1.6rem;
            margin-bottom: 20px;
        }
        
        .value-card p {
            color: var(--text);
        }
        
        /* === 品牌精神 === */
        .spirit-section {
            background: url('https://images.unsplash.com/photo-1540497077202-7c8c0b3104d6?ixlib=rb-4.0.3&ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&auto=format&fit=crop&w=1800&q=80') no-repeat center center/cover;
            color: white;
            text-align: center;
            position: relative;
        }
        
        .spirit-section:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(to right, rgba(26, 54, 93, 0.8), rgba(255, 158, 27, 0.8));
        }
        
        .spirit-content {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            z-index: 2;
        }
        
        .spirit-content h2 {
            font-size: 2.8rem;
            margin-bottom: 20px;
            color: white;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        .spirit-content p {
            font-size: 1.5rem;
            margin-bottom: 40px;
            font-weight: 300;
            line-height: 1.8;
        }
        
        /* === 关于我们 === */
        .about-content {
            display: flex;
            align-items: center;
            gap: 50px;
        }
        
        .about-image {
            flex: 1;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }
        
        .about-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }
        
        .about-text {
            flex: 1;
        }
        
        .about-text p {
            margin-bottom: 20px;
            color: var(--dark);
        }
        
        .feature-list {
            margin: 30px 0;
        }
        
        .feature-item {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }
        
        .feature-icon {
            font-size: 2rem;
            width: 60px;
            height: 60px;
            background: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 20px;
        }
        
        .feature-text h4 {
            font-size: 1.2rem;
            margin-bottom: 5px;
            color: var(--primary);
        }
        
        /* === 页脚 === */
        .bottom {
           background: #1A365D;
            color: white;
            padding: 4rem 0 0;
        }
        
        .contact {
            display: flex;
            justify-content: space-between;
            gap: 50px;
        }
        
        .contactleft {
            flex: 1;
        }
        
        .contactleft h2 {
            font-size: 1.8rem;
            margin-bottom: 20px;
        }
        
        .contactleft p {
            margin-bottom: 10px;
            line-height: 1.8;
        }
        
        .contactleft a {
            color: var(--accent);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        
        .contactleft a:hover {
            text-decoration: underline;
        }
        
        .contactright {
            flex: 0 0 150px;
            text-align: center;
        }
        
        .qr-code {
            width: 150px;
            height: 150px;
            background: white;
            padding: 10px;
            border-radius: 10px;
        }
        
        .footer {
            background: #0c203a;
            color: rgba(255, 255, 255, 0.7);
            text-align: center;
            padding: 1.5rem 0;
            font-size: 0.9rem;
        }
        
        .footer p {
            margin-bottom: 5px;
        }
        
        /* === 动画 === */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        /* === 响应式调整 === */
        @media (max-width: 992px) {
            .section-title h2 {
                font-size: 2.4rem;
            }
            
            .hero h2 {
                font-size: 2.8rem;
            }
            
            .hero p {
                font-size: 1.3rem;
            }
            
            .spirit-content h2 {
                font-size: 2.4rem;
            }
            
            .spirit-content p {
                font-size: 1.3rem;
            }
            
            .about-content {
                flex-direction: column;
            }
            
            .timeline-container:after {
                left: 30px;
            }
            
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }
            
            .timeline-item:nth-child(even) {
                left: 0;
            }
            
            .timeline-item:nth-child(odd):after, 
            .timeline-item:nth-child(even):after {
                left: 20px;
            }
            
            .timeline-item:nth-child(odd) .timeline-content:after,
            .timeline-item:nth-child(even) .timeline-content:after {
                border-width: 10px 10px 10px 0;
                border-color: transparent white transparent transparent;
                left: -10px;
                top: 20px;
            }
        }
        
        @media (max-width: 768px) {
            section {
                padding: 60px 0;
            }
            
            .section-title {
                margin-bottom: 40px;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
            
            .hero {
                height: 70vh;
            }
            
            .hero h2 {
                font-size: 2.2rem;
            }
            
            .hero p {
                font-size: 1.2rem;
            }
            
            .values-grid {
                gap: 20px;
            }
            
            .value-card {
                padding: 30px 20px;
            }
            
            .contact {
                flex-direction: column;
                text-align: center;
            }
            
            .contactright {
                margin-top: 20px;
            }
        }
        
        @media (max-width: 576px) {
            .section-title h2 {
                font-size: 1.8rem;
            }
            
            .hero h2 {
                font-size: 1.8rem;
            }
            
            .hero p {
                font-size: 1.1rem;
            }
            
            .company-info {
                padding: 20px;
            }
            
            .timeline-content {
                padding: 15px;
            }
            
            .spirit-content h2 {
                font-size: 1.8rem;
            }
            
            .spirit-content p {
                font-size: 1.1rem;
            }
        }