/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    scroll-behavior: smooth;
}

/* 颜色变量 - 企业主题色 */
:root {
    --primary: #E63946; /* 红熊猫主色（红色） */
    --secondary: #1D3557; /* 深蓝色 */
    --light: #F1FAEE;
    --gray: #457B9D;
    --dark: #0A1128;
}

body {
    color: var(--dark);
    background-color: #fff;
    line-height: 1.6;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255,255,255,0.95);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
    padding: 15px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: bold;
    color: var(--primary);
    text-decoration: none;
}

/* 本地Logo样式 */
.logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: 0.3s;
}

.nav-menu a:hover {
    color: var(--primary);
}

/* 移动端菜单按钮 */
.menu-btn {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--dark);
}

/* 通用容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 20px;
}

/* 首页横幅 */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://picsum.photos/id/180/1920/1080');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    text-align: center;
    color: white;
    margin-top: 70px;
}

.hero-content {
    width: 100%;
    padding: 0 20px;
}

.hero h1 {
    font-size: 50px;
    margin-bottom: 20px;
}

.hero h1 span {
    color: var(--primary);
}

.hero p {
    font-size: 20px;
    max-width: 700px;
    margin: 0 auto 30px;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: 0.3s;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background: #c1121f;
    transform: translateY(-3px);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--primary);
    margin-left: 15px;
}

/* 区块标题 */
.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 36px;
    color: var(--secondary);
    margin-bottom: 15px;
}

.section-title p {
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
}

/* 关于我们 */
.about {
    background: var(--light);
}

.about-content {
    display: flex;
    gap: 40px;
    align-items: center;
}


.about-text {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--secondary);
}

.about-text p {
    margin-bottom: 15px;
    font-size: 16px;
}

/* 服务项目 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    text-align: center;
    transition: 0.3s;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.service-card i {
    font-size: 40px;
    color: var(--primary);
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--secondary);
}

/* 产品展示 */
.products {
    background: var(--light);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.product-img {
    height: 200px;
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-info {
    padding: 20px;
}

.product-info h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--secondary);
}

/* 页脚 */
footer {
    background: var(--secondary);
    color: white;
    text-align: center;
    padding: 40px 20px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

.footer-links a {
    color: white;
    font-size: 20px;
    transition: 0.3s;
}

.footer-links a:hover {
    color: var(--primary);
}

/* 响应式适配 */
@media (max-width: 992px) {
    .about-content {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: white;
        width: 100%;
        text-align: center;
        padding: 30px 0;
        box-shadow: 0 10px 10px rgba(0,0,0,0.1);
        transition: 0.3s;
    }

    .nav-menu.active {
        left: 0;
    }

    .menu-btn {
        display: block;
    }

    .hero h1 {
        font-size: 35px;
    }

    .hero p {
        font-size: 16px;
    }
}