/* 
 * 主样式表 - 苏州比鹿信息技术有限公司
 * 创建日期: 2025-04-21
 */

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #f97316;
    --text-color: #1e293b;
    --text-light: #64748b;
    --bg-light: #f8fafc;
    --bg-dark: #0f172a;
    --white: #ffffff;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth; /* 添加平滑滚动效果 */
    scroll-padding-top: 100px; /* 考虑固定导航栏的高度 */
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--bg-light);
    overflow-x: hidden;
    font-size: 16px;
}

.container {
    width: 100%;
    max-width: 1400px; /* 增加最大宽度 */
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

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

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-header h2:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 4px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
    border: 2px solid var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
}

.btn-outline {
    background-color: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.btn-outline:hover {
    background-color: var(--white);
    color: var(--primary-color);
}

.btn-text {
    color: var(--primary-color);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
}

.btn-text i {
    margin-left: 8px;
    transition: var(--transition);
}

.btn-text:hover {
    color: var(--primary-dark);
}

.btn-text:hover i {
    transform: translateX(5px);
}

/* 导航栏样式 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    background-color: var(--white);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    padding: 0 30px; /* 调整左右内边距 */
    max-width: 1600px; /* 为header设置更大的最大宽度 */
}

.logo {
    display: flex;
    align-items: center;
}

.logo a {
    display: block;
    text-decoration: none;
}

.logo img {
    height: 50px;
    width: auto;
}

.company-name {
    font-family: 'Noto Sans SC', sans-serif;
    font-size: 1.35rem; /* 增大字体大小 */
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: 0.5px;
    text-transform: none;
    position: relative;
    padding-left: 15px;
    display: inline-block;
    transition: var(--transition);
    white-space: nowrap; /* 防止文本换行 */
}

.company-name::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px; /* 增加线条宽度 */
    height: 75%; /* 增加线条高度 */
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.company-name:hover {
    color: var(--secondary-color);
    transform: translateX(3px); /* 添加悬停效果 */
}

@media (max-width: 767px) {
    .company-name {
        font-size: 1.1rem; /* 增大移动端字体大小 */
        padding-left: 10px;
    }
}

.nav-menu ul {
    display: flex;
}

.nav-menu li {
    position: relative;
    margin-left: 20px; /* 减小菜单项之间的间距 */
}

.nav-menu li:first-child {
    margin-left: 0;
}

.nav-menu a {
    display: block;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-color);
    padding: 10px 15px; /* 调整内边距 */
    border-radius: 4px;
    transition: var(--transition);
    position: relative; /* 恢复相对定位，用于下划线效果 */
}

.nav-menu a:after {
    content: '';
    position: absolute;
    bottom: 5px; /* 调整下划线位置 */
    left: 15px; /* 与左内边距对齐 */
    right: 15px; /* 与右内边距对齐 */
    width: calc(100% - 30px); /* 考虑内边距 */
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
    transform: scaleX(0); /* 初始状态为0宽度 */
    transform-origin: center; /* 从中间开始展开 */
}

.nav-menu a:hover:after,
.nav-menu a.active:after {
    transform: scaleX(1); /* 悬停或激活时展开到完整宽度 */
}

.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--white);
    min-width: 200px;
    box-shadow: var(--shadow);
    border-radius: 4px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 100;
    padding: 10px 0;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: block;
}

.dropdown-menu li {
    margin: 0;
    display: block;
    width: 100%;
}

.dropdown-menu a {
    display: block;
    padding: 12px 20px;
    color: var(--text-color);
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
    text-align: left;
    width: 100%;
}

.dropdown-menu a:hover {
    background-color: var(--bg-light);
    color: var(--primary-color);
}

.mobile-menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* 主横幅样式 */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    background-color: #0f172a; /* 深色背景，以防Canvas加载前显示 */
    background-image: url('../images/background.png');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    padding: 0 20px;
    margin-top: 80px;
    overflow: hidden;
}

#heroCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.6); /* 增加不透明度，让背景图片更明显 */
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* 优势部分样式 */
.advantages {
    padding: 100px 0;
    background-color: var(--white);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.advantage-card {
    background-color: var(--bg-light);
    border-radius: 8px;
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.advantage-card .icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.advantage-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.advantage-card p {
    color: var(--text-light);
}

/* 服务部分样式 */
.services {
    padding: 100px 0;
    background-color: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.service-card {
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    scroll-margin-top: 100px; /* 确保锚点跳转时有足够的顶部空间 */
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.service-image {
    position: relative;
    width: 100%;
    padding-top: 66.67%; /* 2:3 = 66.67% */
    overflow: hidden;
}

.service-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.service-card:hover .service-image img {
    transform: scale(1.05);
}

.service-content {
    padding: 30px;
}

.service-content h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.service-content p {
    color: var(--text-light);
    margin-bottom: 20px;
}

/* 案例部分样式 */
.cases {
    padding: 100px 0;
    background-color: var(--white);
}

.cases-slider {
    position: relative;
    display: flex;
    overflow: hidden;
}

.case-item {
    flex: 0 0 calc(33.333% - 20px);
    margin: 0 10px;
    background-color: var(--bg-light);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.case-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.case-image {
    height: 200px;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.case-item:hover .case-image img {
    transform: scale(1.05);
}

.case-content {
    padding: 25px;
}

.case-content h3 {
    font-size: 1.25rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.case-content p {
    color: var(--text-light);
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.cases-nav {
    display: flex;
    justify-content: center;
    margin-top: 40px;
    gap: 20px;
}

.cases-nav button {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--white);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.cases-nav button:hover {
    background-color: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

/* 合作伙伴部分样式 */
.partners {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 30px;
    align-items: center;
}

.partner-logo {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100px;
    padding: 20px;
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.partner-logo:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.partner-logo img {
    max-height: 60px;
    max-width: 100%;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: var(--transition);
}

.partner-logo:hover img {
    filter: grayscale(0);
    opacity: 1;
}

/* 联系部分样式 */
.contact-section {
    padding: 100px 0;
    background-color: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.contact-info > p {
    color: var(--text-light);
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.contact-details {
    margin-top: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.contact-item i {
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    font-size: 1rem;
}

.contact-item p {
    font-size: 1rem;
    color: var(--text-color);
}

.contact-form {
    background-color: var(--bg-light);
    padding: 40px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

/* 页脚样式 */
.footer {
    background-color: var(--bg-dark);
    color: var(--white);
    padding-top: 80px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: 50px;
    padding-bottom: 50px;
    border-bottom: none;
}

.footer-logo {
    max-width: 150px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.footer-links-column h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    font-weight: 600;
    color: var(--white);
}

.footer-links-column ul li {
    margin-bottom: 10px;
}

.footer-links-column ul li a,
.footer-links-column ul li {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.footer-links-column ul li i {
    margin-right: 10px;
    font-size: 0.9rem;
}

.footer-links-column ul li a:hover {
    color: var(--white);
    padding-left: 5px;
}

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

.footer-qrcode img {
    width: 120px;
    height: 120px;
    margin: 0 auto 15px;
    background-color: var(--white);
    padding: 5px;
    border-radius: 4px;
}

.footer-qrcode p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom {
    border-top: none;
    padding-top: 20px;
    margin-top: 20px;
    text-align: center;
    font-size: 0.9rem;
    color: var(--white);
}

.footer-bottom a {
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.footer-bottom a:hover {
    color: var(--white);
    text-decoration: underline;
}

@media (max-width: 991px) {
    .container {
        max-width: 720px;
    }
    
    .header .container {
        height: 70px;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 280px;
        height: calc(100vh - 70px);
        background-color: var(--white);
        box-shadow: var(--shadow);
        transition: var(--transition);
        overflow-y: auto;
        z-index: 999;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu ul {
        flex-direction: column;
        padding: 20px;
    }
    
    .nav-menu li {
        margin: 0 0 15px 0;
    }
    
    .nav-menu a {
        display: block;
        padding: 10px 0;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        min-width: auto;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        padding: 0;
    }
    
    .dropdown.active .dropdown-menu {
        max-height: 500px;
    }
    
    .dropdown-menu ul {
        display: block;
    }
    
    .dropdown-menu li {
        margin: 0;
    }
    
    .dropdown-menu a {
        padding-left: 20px;
        text-align: left;
        border-bottom: 1px solid var(--border-color);
    }
    
    .hero {
        height: 80vh;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .case-item {
        flex: 0 0 calc(50% - 20px);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .footer-top {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-logo {
        margin: 0 auto;
    }
    
    .footer-qrcode {
        margin: 0 auto;
    }
}

@media (max-width: 767px) {
    .company-name {
        font-size: 1.1rem; /* 增大移动端字体大小 */
        padding-left: 10px;
    }
}