/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    background-color: #f0f8ff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 22.5px 20px;
}

.logo {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.logo img {
    width: auto;
    height: 60px;
    object-fit: contain;
    align-self: flex-start;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-name {
    font-size: 1.5rem;
    font-weight: bold;
    color: #333;
}

.logo-english {
    font-size: 0.8rem;
    color: #666;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    font-size: 1.2rem;
    transition: color 0.3s;
    padding: 0 5px;
}

.nav-links a:hover {
    color: #1a73e8;
}

.mobile-menu {
    display: none;
}

/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, #1a73e8 0%, #34a853 100%);
    color: #fff;
    padding: 100px 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.hero-features {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: rgba(255, 255, 255, 0.1);
    padding: 10px 20px;
    border-radius: 25px;
}

.feature-item i {
    color: #fff;
    font-size: 1.2rem;
}

.feature-item span {
    color: #fff;
    font-weight: 500;
}

@media (max-width: 768px) {
    .hero-features {
        flex-direction: column;
        align-items: center;
    }
    
    .feature-item {
        width: 100%;
        justify-content: center;
    }
}

.btn {
    display: inline-block;
    background-color: #fff;
    color: #1a73e8;
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #f0f0f0;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: #1a73e8;
    border: 2px solid #1a73e8;
    margin-top: 30px;
}

.btn-secondary:hover {
    background-color: #7AC5E8;
    color: #fff;
}

/* 通用章节样式 */
section {
    padding: 80px 0;
}

/* 页面标题栏 */
.page-header {
    background-color: #fff;
    padding: 20px 0;
    margin-bottom: 20px;
}

.page-header h1 {
    text-align: left;
    margin: 0;
    font-size: 2.5rem;
    color: #333;
}

.page-header p {
    text-align: left;
    margin: 10px 0 0;
    font-size: 1.1rem;
    color: #666;
}

section h2 {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2rem;
    color: #333;
}

/* 关于我们 */
.about-section {
    background-color: #fff;
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.about-text {
    width: 100%;
}

.about-text p {
    margin-bottom: 15px;
    line-height: 1.8;
}

.about-images {
    display: flex;
    gap: 20px;
    width: 100%;
}

.about-images img {
    width: 50%;
    height: auto;
    object-fit: cover;
    border-radius: 5px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* 公司愿景 */
.vision-section {
    background-color: #fff;
    padding: 80px 0;
}

.vision-section p {
    margin-bottom: 15px;
    line-height: 1.8;
}

.vision-content {
    display: flex;
    gap: 40px;
    align-items: stretch;
    margin-top: 30px;
}

.vision-image {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.vision-image img {
    width: 100%;
    border-radius: 0;
    box-shadow: none;
}

.vision-text {
    flex: 1.2;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.vision-text h3 {
    margin-bottom: 15px;
    color: #1a73e8;
    font-size: 1.5rem;
    text-decoration: underline;
}

.vision-text p {
    margin-bottom: 0;
    line-height: 1.6;
    color: #333;
}

.vision-text > div {
    display: flex;
    flex-direction: column;
    justify-content: center;
    flex: 1;
}

/* 服务宗旨及核心价值 */
.values-section {
    padding: 80px 0;
}

.values-section p {
    margin-bottom: 15px;
    line-height: 1.8;
}

.values-content {
    display: flex;
    gap: 40px;
    align-items: flex-end;
    margin-top: 30px;
}

.values-left {
    flex: 1;
}

.values-subtitle {
    color: #1a73e8;
    font-size: 1.5rem;
    margin-bottom: 20px;
    text-decoration: underline;
}

.service-purpose {
    color: #000;
    font-weight: 500;
    margin-bottom: 30px;
}

.core-values {
    background-color: #7AC5E8;
    color: #fff;
    padding: 20px;
    border-radius: 5px;
}

.core-values p {
    margin-bottom: 10px;
    line-height: 1.5;
}

.core-values p:last-child {
    margin-bottom: 0;
}

.values-right {
    flex: 1.2;
    display: flex;
    align-items: stretch;
}

.values-images {
    display: flex;
    gap: 20px;
    height: 100%;
    width: 100%;
}

.values-images img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 5px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* 核心价值 */
.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.value-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s;
}

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

.value-item i {
    font-size: 2.5rem;
    color: #1a73e8;
    margin-bottom: 20px;
}

.value-item h3 {
    margin-bottom: 15px;
    color: #333;
}

/* 公司优势 */
.advantages-section {
    padding: 80px 0;
}

.advantages-section p {
    margin-bottom: 15px;
    line-height: 1.8;
}

.advantages-content {
    display: flex;
    gap: 60px;
    align-items: flex-start;
    margin-top: 30px;
}

.advantages-image {
    flex: 0.6;
    display: flex;
    align-items: flex-start;
    height: 100%;
}

.advantages-image img {
    width: 100%;
    border-radius: 50%;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    max-height: 300px;
    object-fit: contain;
}

.advantages-list {
    flex: 1.2;
    position: relative;
}

.advantages-list::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 10px;
    bottom: 10px;
    width: 2px;
    background-color: #ddd;
}

.advantage-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    position: relative;
}

.advantage-item:last-child {
    margin-bottom: 0;
}

.advantage-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: #7AC5E8;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    position: relative;
    z-index: 1;
}

.advantage-info h3 {
    color: #1a73e8;
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.advantage-info p {
    color: #666;
    line-height: 1.6;
}

/* 服务范围 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.service-item {
    background-color: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s;
    display: flex;
    flex-direction: column;
    height: 100%;
}

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

.service-item i {
    font-size: 2.5rem;
    color: #1a73e8;
    margin-bottom: 20px;
}

.service-item h3 {
    margin-bottom: 15px;
    color: #1a73e8;
    height: 60px;
    display: flex;
    align-items: center;
}

.service-item p {
    flex: 1;
    line-height: 1.6;
    color: #666;
}

/* 项目案例 */
.cases-section {
    background-color: #f9f9f9;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.case-item {
    background-color: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

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

.case-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.case-info {
    padding: 20px;
}

.case-item h3 {
    color: #333;
    margin-bottom: 10px;
}

.case-category {
    display: inline-block;
    background-color: #7AC5E8;
    color: #fff;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-bottom: 15px;
}

.case-item p {
    color: #666;
    line-height: 1.6;
}

/* 联系我们 */
.contact-content {
    display: flex;
    gap: 50px;
}

.contact-info {
    flex: 1;
}

.contact-info p {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-info i {
    color: #1a73e8;
    font-size: 1.2rem;
}

.contact-form {
    flex: 1;
}

.contact-form form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-form input,
.contact-form textarea {
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

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

/* 页脚 */
.footer {
    background-color: #333;
    color: #fff;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-logo {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.footer-logo img {
    width: auto;
    height: 60px;
    object-fit: contain;
    align-self: flex-start;
}

.footer-logo-text {
    display: flex;
    flex-direction: column;
}

.footer-logo-name {
    font-size: 1.2rem;
    font-weight: bold;
    color: #fff;
    margin-bottom: 5px;
}

.footer-logo-english {
    font-size: 0.8rem;
    color: #ccc;
    text-transform: uppercase;
}

.footer-logo-slogan {
    color: #ccc;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.footer-links h4,
.footer-contact h4 {
    margin-bottom: 20px;
    color: #fff;
}

.footer-links ul {
    list-style: none;
}

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

.footer-links ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links ul li a:hover {
    color: #1a73e8;
}

.footer-contact p {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #ccc;
}

.footer-contact i {
    color: #1a73e8;
}

.footer-bottom {
    border-top: 1px solid #444;
    padding-top: 20px;
    text-align: center;
    color: #ccc;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu {
        display: block;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .about-content,
    .contact-content {
        flex-direction: column;
    }

    .about-text,
    .about-image {
        flex: none;
        width: 100%;
    }

    .services-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

/* 移动菜单 */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100vh;
    background-color: #fff;
    box-shadow: -2px 0 5px rgba(0,0,0,0.1);
    transition: right 0.3s;
    z-index: 1001;
    padding: 20px;
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav .close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 1.5rem;
    cursor: pointer;
}

.mobile-nav-links {
    margin-top: 60px;
}

.mobile-nav-links a {
    display: block;
    padding: 15px 0;
    text-decoration: none;
    color: #333;
    border-bottom: 1px solid #eee;
}

.mobile-nav-links a:hover {
    color: #1a73e8;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #1a73e8;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 滚动动画 */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s, transform 0.6s;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 团队案例 */
.team-cases-section {
    background-color: #fff;
    padding: 80px 0;
}

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

.team-case-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

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

.team-case-info h4 {
    margin-bottom: 15px;
    color: #1a73e8;
    font-size: 1.2rem;
}

.team-case-info p {
    line-height: 1.6;
    color: #333;
}

/* 公司案例筛选 */
.cases-filter {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 20px;
    border: 1px solid #1a73e8;
    background-color: #fff;
    color: #1a73e8;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s;
}

.filter-btn.active {
    background-color: #7AC5E8;
    color: #fff;
}

.filter-btn:hover {
    background-color: #7AC5E8;
    color: #fff;
}

/* 客户类型 */
.clients-section {
    padding: 80px 0;
}

.clients-section p {
    margin: 0 0 40px 0;
}

.client-image-container {
    margin: 0;
    padding: 0;
}

.client-image-container img {
    width: 100%;
    height: auto;
    object-fit: contain;
    display: block;
    margin: 0;
    padding: 0;
}

/* 服务项目建筑业态类型 */
.building-types-section {
    padding: 80px 0;
    background-color: #fff;
}

.building-types-content {
    display: flex;
    gap: 40px;
    align-items: stretch;
    margin-top: 40px;
}

.building-types-list {
    flex: 1;
    background-color: #7AC5E8;
    color: #fff;
    padding: 40px;
    border-radius: 10px;
}

.building-types-list ul {
    list-style: none;
}

.building-types-list li {
    margin-bottom: 15px;
    padding-left: 25px;
    position: relative;
    line-height: 1.5;
}

.building-types-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #fff;
    font-weight: bold;
}

.building-types-image {
    flex: 1;
    display: flex;
    align-items: stretch;
}

.building-types-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.client-item {
    text-align: center;
    transition: transform 0.3s;
}

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

/* 公司案例 */
.company-cases-section {
    padding: 80px 0;
}

.cases-content {
    display: flex;
    gap: 40px;
    align-items: stretch;
    margin-top: 40px;
}

.cases-list {
    flex: 1;
    background-color: #7AC5E8;
    color: #fff;
    padding: 40px;
    border-radius: 10px;
}

.cases-list h3 {
    margin-bottom: 20px;
    font-size: 1.5rem;
    text-align: center;
}

.cases-list ul {
    list-style: none;
}

.cases-list li {
    margin-bottom: 15px;
    line-height: 1.5;
    position: relative;
    padding-left: 25px;
}

.cases-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #fff;
    font-weight: bold;
}

.cases-list li.ellipsis::before {
    content: none;
}

.cases-gallery {
    flex: 2;
    display: flex;
    flex-direction: column;
}

.cases-gallery-header {
    background-color: #7AC5E8;
    color: #fff;
    padding: 15px 20px;
    border-radius: 10px 10px 0 0;
    margin-bottom: 20px;
}

.cases-gallery-header h3 {
    margin: 0;
    font-size: 1.5rem;
    text-align: center;
}

.cases-gallery-images {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.cases-gallery-images img {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 5px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* 团队成员及案例介绍 */
.team-members-cases {
    margin-top: 80px;
}

.team-members-cases h3 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 1.8rem;
    color: #1a73e8;
}

.team-members-cases-content {
    display: flex;
    gap: 40px;
    align-items: stretch;
}

.team-cases-list {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.case-category {
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.case-category h4 {
    margin-bottom: 15px;
    color: #1a73e8;
    font-size: 1.2rem;
}

.case-category ul {
    list-style: none;
}

.case-category li {
    margin-bottom: 15px;
    line-height: 1.5;
    position: relative;
    padding-left: 25px;
    color: #000;
    font-size: 1rem;
}

.case-category li::before {
    content: '■';
    position: absolute;
    left: 0;
    color: #1a73e8;
    font-size: 0.8rem;
}

.team-cases-gallery {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.team-cases-gallery-header {
    background-color: #7AC5E8;
    color: #fff;
    padding: 15px 20px;
    border-radius: 10px 10px 0 0;
    margin-bottom: 20px;
}

.team-cases-gallery-header h4 {
    margin: 0;
    font-size: 1.2rem;
    text-align: center;
}

.team-cases-images {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.team-cases-images img {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 5px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.client-item img {
    width: 100%;
    max-width: 150px;
    height: auto;
    object-fit: contain;
}

.client-item h3 {
    color: #333;
    margin-top: 10px;
}

/* 常见问题 */
.faq-section {
    padding: 80px 0;
}

.faq-list {
    margin-top: 40px;
}

.faq-item {
    margin-bottom: 30px;
}

.faq-item h3 {
    color: #333;
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.faq-item p {
    color: #666;
    line-height: 1.6;
    margin: 0;
}

/* 设计&咨询服务类别 */
.service-categories-section {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.service-categories-image {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}

.service-categories-description {
    text-align: justify;
    margin: 30px 0;
    line-height: 1.6;
    color: #666;
    font-size: 1.1rem;
}

.service-categories-image img {
    width: 64%;
    height: auto;
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    margin: 0 auto;
    display: block;
}

/* 服务流程 */
.service-process-section {
    padding: 80px 0;
}

.service-process-description {
    text-align: justify;
    margin: 30px 0;
    line-height: 1.6;
    color: #666;
    font-size: 1.1rem;
}

.service-process-image {
    display: flex;
    justify-content: center;
    margin-top: 30px;
}

.service-process-image img {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}