/* 
 * 高山云科技 - 公司官网样式
 * 版本: 1.0.0
 */

/* 基础重置与默认样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #0066cc;
    --secondary-color: #0099ff;
    --accent-color: #ff6600;
    --text-color: #333333;
    --light-text: #666666;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --border-color: #e9e9e9;
    --success-color: #28a745;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
    font-size: 16px;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

a:hover {
    color: var(--secondary-color);
}

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

ul {
    list-style: none;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 4px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

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

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

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

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

.btn-lg {
    padding: 12px 24px;
    font-size: 18px;
}

/* 头部导航 */
.header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 15px 0;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo img {
    height: 40px;
    margin-right: 10px;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-color);
}

.nav ul {
    display: flex;
}

.nav-link {
    margin: 0 15px;
    font-weight: 500;
    color: var(--text-color);
    position: relative;
    padding: 5px 0;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--primary-color);
}

/* 英雄区域 */
.hero {
    padding: 150px 0 100px;
    background-color: var(--light-bg);
    position: relative;
    overflow: hidden;
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.hero-text {
    flex: 1;
    padding-right: 40px;
}

.hero-title {
    font-size: 42px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.hero-subtitle {
    font-size: 18px;
    margin-bottom: 30px;
    color: var(--light-text);
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.hero-image {
    flex: 1;
    text-align: center;
}

/* 通用节标题样式 */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--light-text);
    max-width: 700px;
    margin: 0 auto;
}

/* 关于我们 */
.about {
    padding: 80px 0;
    background-color: var(--white);
}

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

.about-image {
    flex: 1;
}

.about-image img {
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.about-text {
    flex: 1;
}

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

.about-stats {
    display: flex;
    justify-content: space-around;
    margin-top: 30px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.stat-text {
    font-size: 16px;
    color: var(--light-text);
}

/* 产品展示 */
.products {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.products-tabs {
    margin-top: 30px;
}

.tab-nav {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
}

.tab-btn {
    padding: 10px 20px;
    background: var(--white);
    border: none;
    cursor: pointer;
    font-weight: 600;
    border-radius: 4px;
    margin: 0 10px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.tab-btn.active, .tab-btn:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.product-content {
    display: flex;
    align-items: center;
    gap: 40px;
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 30px;
}

.product-image {
    flex: 1;
    text-align: center;
}

.product-image img {
    border-radius: 8px;
    max-width: 100%;
}

.product-info {
    flex: 1;
}

.product-title {
    font-size: 28px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.product-desc {
    margin-bottom: 20px;
    color: var(--light-text);
}

.product-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.feature-item {
    display: flex;
    align-items: center;
}

.feature-item i {
    color: var(--primary-color);
    font-size: 20px;
    margin-right: 10px;
}

.product-actions {
    display: flex;
    gap: 15px;
}

/* 核心技术 */
.technology {
    padding: 80px 0;
    background-color: var(--white);
}

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

.tech-item {
    background-color: var(--white);
    border-radius: 8px;
    padding: 30px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: all 0.3s ease;
}

.tech-item:hover {
    transform: translateY(-5px);
}

.tech-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    background-color: var(--light-bg);
    color: var(--primary-color);
    font-size: 30px;
}

.tech-title {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.tech-desc {
    color: var(--light-text);
}

/* 团队介绍 */
.team {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.team-member {
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    text-align: center;
    transition: all 0.3s ease;
}

.team-member:hover {
    transform: translateY(-5px);
}

.member-photo {
    overflow: hidden;
}

.member-photo img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: all 0.3s ease;
}

.team-member:hover .member-photo img {
    transform: scale(1.05);
}

.member-name {
    font-size: 20px;
    margin: 20px 0 5px;
    color: var(--primary-color);
}

.member-position {
    font-size: 16px;
    color: var(--accent-color);
    margin-bottom: 10px;
}

.member-desc {
    padding: 0 20px 20px;
    color: var(--light-text);
}

/* 联系我们 */
.contact {
    padding: 80px 0;
    background-color: var(--white);
}

.contact-content {
    display: flex;
    gap: 40px;
}

.contact-info, .contact-form {
    flex: 1;
}

.info-item {
    display: flex;
    margin-bottom: 30px;
}

.info-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-color);
    color: var(--white);
    font-size: 20px;
    margin-right: 20px;
}

.info-text h3 {
    font-size: 18px;
    margin-bottom: 5px;
    color: var(--primary-color);
}

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

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 16px;
}

.form-group textarea {
    resize: vertical;
}

/* 页脚 */
.footer {
    background-color: #333;
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.footer-logo-section {
    width: 35%;
}

.footer-logo-section .logo {
    margin-bottom: 20px;
}

.footer-about {
    margin-bottom: 20px;
    color: #ccc;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 18px;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.footer-links-section {
    width: 20%;
}

.footer-title {
    font-size: 18px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-title::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 2px;
    background-color: var(--primary-color);
    bottom: 0;
    left: 0;
}

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

.footer-links a {
    color: #ccc;
}

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

.footer-divider {
    height: 1px;
    background-color: rgba(255, 255, 255, 0.1);
    margin-bottom: 20px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    color: #ccc;
    font-size: 14px;
}

/* 返回顶部按钮 */
.scroll-to-top {
    position: fixed;
    right: 30px;
    bottom: 30px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.scroll-to-top.active {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    background-color: var(--secondary-color);
}