/* 基础样式 */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --text-color: #333;
    --text-light: #7f8c8d;
    --white: #fff;
    --gray: #95a5a6;
    --light-gray: #f5f5f5;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Open Sans', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

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;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 12px 30px;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #2980b9;
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

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

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

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

.section-padding {
    padding: 80px 0;
}

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

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

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

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

.logo span {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary-color);
}

.navbar ul {
    display: flex;
}

.navbar ul li {
    margin-left: 30px;
}

.navbar ul li a {
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
}

.navbar ul li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: width 0.3s ease;
}

.navbar ul li a:hover::after,
.navbar ul li a.active::after {
    width: 100%;
}

.navbar ul li a.active {
    color: var(--secondary-color);
}

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

/* 页面头部 */
.page-header {
    height: 300px;
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('../images/hero-bg.jpg') no-repeat center center/cover;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--white);
    padding-top: 80px;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.page-header p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto;
}

/* 英雄区域 */
.hero {
    height: 100vh;
    min-height: 600px;
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('../images/hero-bg.jpg') no-repeat center center/cover;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--white);
    padding-top: 80px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    animation: fadeInUp 1s ease;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease 0.2s forwards;
    opacity: 0;
}

.hero .btn {
    animation: fadeInUp 1s ease 0.4s forwards;
    opacity: 0;
}

/* 服务概览 */
.services-overview {
    background-color: var(--light-gray);
    padding: 80px 0;
}

.services-overview h2 {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.services-overview h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--secondary-color);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.service-item {
    background-color: var(--white);
    padding: 40px 30px;
    border-radius: 5px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.service-item i {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

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

/* 服务详情 */
.services-detail {
    padding: 80px 0;
}

.service-category {
    display: flex;
    align-items: center;
    margin-bottom: 60px;
}

.service-category.reverse {
    flex-direction: row-reverse;
}

.service-image {
    flex: 1;
    padding: 20px;
}

.service-image img {
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.service-content {
    flex: 1;
    padding: 20px;
}

.service-content h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.service-content ul {
    margin: 20px 0;
}

.service-content ul li {
    margin-bottom: 10px;
    position: relative;
    padding-left: 20px;
}

.service-content ul li::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    color: var(--secondary-color);
}

/* 精选作品 */
.featured-work {
    padding: 80px 0;
}

.featured-work h2 {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.featured-work h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--secondary-color);
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.work-item {
    position: relative;
    border-radius: 5px;
    overflow: hidden;
    height: 250px;
}

.work-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.work-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(44, 62, 80, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    color: var(--white);
    text-align: center;
    padding: 20px;
    color: #ffffff;
}

.work-overlay h3 {
    margin-bottom: 15px;
    transform: translateY(20px);
    transition: transform 0.3s ease;
    color: #ffffff !important;
    text-shadow: 0 1px 3px rgba(0,0,0,0.5); 
}

.work-overlay a {
    color: var(--white);
    border: 2px solid var(--white);
    padding: 8px 20px;
    border-radius: 4px;
    transform: translateY(20px);
    transition: all 0.3s ease;
    color: #ffffff !important;
    border-color: #ffffff;
}

.work-overlay a:hover {
    background-color: var(--white);
    color: var(--primary-color);
}

.work-item:hover .work-overlay {
    opacity: 1;
}

.work-item:hover .work-overlay h3,
.work-item:hover .work-overlay a {
    transform: translateY(0);
}

.work-item:hover img {
    transform: scale(1.1);
}

/* 作品集筛选 */
.portfolio-filter {
    padding: 20px 0;
    background-color: var(--light-gray);
}

.portfolio-filter ul {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.portfolio-filter ul li {
    margin: 0 10px;
}

.portfolio-filter ul li a {
    display: block;
    padding: 8px 20px;
    border-radius: 4px;
    font-weight: 600;
    color: var(--text-color);
}

.portfolio-filter ul li a.active,
.portfolio-filter ul li a:hover {
    background-color: var(--secondary-color);
    color: var(--white);
}

/* 作品集画廊 */
.portfolio-gallery {
    padding: 80px 0;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.portfolio-item {
    position: relative;
    border-radius: 5px;
    overflow: hidden;
    height: 250px;
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(44, 62, 80, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    color: var(--white);
    text-align: center;
    padding: 20px;
}

.portfolio-overlay h3 {
    margin-bottom: 5px;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.portfolio-overlay p {
    margin-bottom: 15px;
    transform: translateY(20px);
    transition: transform 0.3s ease 0.1s;
}

.portfolio-overlay a {
    color: var(--white);
    border: 2px solid var(--white);
    padding: 8px 20px;
    border-radius: 4px;
    transform: translateY(20px);
    transition: all 0.3s ease 0.2s;
}

.portfolio-overlay a:hover {
    background-color: var(--white);
    color: var(--primary-color);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-item:hover .portfolio-overlay h3,
.portfolio-item:hover .portfolio-overlay p,
.portfolio-item:hover .portfolio-overlay a {
    transform: translateY(0);
}

.portfolio-item:hover img {
    transform: scale(1.1);
}

/* 关于我们 */
.about-intro {
    padding: 80px 0;
}

.about-intro .container {
    display: flex;
    align-items: center;
}

.about-content {
    flex: 1;
    padding-right: 40px;
}

.about-content h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.about-content p {
    margin-bottom: 15px;
}

.about-image {
    flex: 1;
}

.about-image img {
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 我们的价值观 */
.our-values {
    padding: 80px 0;
    background-color: var(--light-gray);
}

.our-values h2 {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.our-values h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--secondary-color);
}

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

.value-item {
    background-color: var(--white);
    padding: 30px;
    border-radius: 5px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.value-item:hover {
    transform: translateY(-10px);
}

.value-item i {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.value-item h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

/* 我们的团队 */
.our-team {
    padding: 80px 0;
}

.our-team h2 {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.our-team h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--secondary-color);
}

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

.team-member {
    background-color: var(--white);
    padding: 30px;
    border-radius: 5px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.team-member:hover {
    transform: translateY(-10px);
}

.team-member img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 20px;
    border: 5px solid var(--light-gray);
}

.team-member h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
}

.team-member p {
    color: var(--text-light);
    margin-bottom: 15px;
}

.team-member .social-links {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.team-member .social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 35px;
    height: 35px;
    background-color: var(--light-gray);
    color: var(--primary-color);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.team-member .social-links a:hover {
    background-color: var(--secondary-color);
    color: var(--white);
}

/* 联系我们 */
.contact-section {
    padding: 80px 0;
}

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

.contact-info {
    flex: 1;
}

.contact-info h2 {
    font-size: 2rem;
    margin-bottom: 30px;
    color: var(--primary-color);
}

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

.info-item i {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-right: 20px;
    margin-top: 5px;
}

.info-item h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.contact-form {
    flex: 1;
    background-color: var(--white);
    padding: 40px;
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.contact-form h2 {
    font-size: 2rem;
    margin-bottom: 30px;
    color: var(--primary-color);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: 'Open Sans', sans-serif;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
}

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

/* 地图部分 */
.map-section {
    padding-bottom: 80px;
}

.map-section iframe {
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

/* CTA部分 */
.cta-section {
    padding: 80px 0;
    text-align: center;
    background-color: var(--primary-color);
    color: var(--white);
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 客户评价 */
.testimonials {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 80px 0;
}

.testimonials h2 {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.testimonials h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--secondary-color);
}

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

.testimonial-item {
    padding: 0 20px;
}

.testimonial-item p {
    font-size: 1.2rem;
    font-style: italic;
    margin-bottom: 20px;
    line-height: 1.8;
}

.testimonial-item h4 {
    color: var(--secondary-color);
}

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

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-about img {
    height: 40px;
    margin-bottom: 20px;
}

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

.footer-links h3,
.footer-contact h3 {
    font-size: 1.2rem;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h3::after,
.footer-contact h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--secondary-color);
}

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

.footer-links ul li a {
    color: var(--gray);
    transition: all 0.3s ease;
}

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

.footer-contact p {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    color: var(--gray);
}

.footer-contact i {
    margin-right: 10px;
    color: var(--secondary-color);
    width: 20px;
    text-align: center;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    text-align: center;
}

.footer-bottom p {
    color: var(--gray);
    font-size: 0.9rem;
}

.social-links {
    margin-top: 15px;
}

.social-links a {
    display: inline-block;
    width: 35px;
    height: 35px;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-radius: 50%;
    text-align: center;
    line-height: 35px;
    margin: 0 5px;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 作品详情页样式 */
.portfolio-detail {
    padding: 80px 0;
}

.portfolio-main {
    display: flex;
    gap: 40px;
    margin-bottom: 60px;
}

.portfolio-images {
    flex: 1;
}

.main-image {
    margin-bottom: 20px;
}

.main-image img {
    width: 100%;
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.thumbnail-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.thumbnail-item {
    cursor: pointer;
    border-radius: 5px;
    overflow: hidden;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.thumbnail-item.active {
    border-color: var(--secondary-color);
}

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

.portfolio-content {
    flex: 1;
}

.portfolio-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 20px;
    color: var(--text-light);
}

.portfolio-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.portfolio-content h2 {
    font-size: 2rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.portfolio-content h3 {
    font-size: 1.5rem;
    margin: 25px 0 15px;
    color: var(--primary-color);
}

.portfolio-features ul {
    margin: 20px 0;
}

.portfolio-features li {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.portfolio-features i {
    color: var(--secondary-color);
}

.portfolio-description {
    margin-bottom: 60px;
    padding: 40px;
    background-color: var(--light-gray);
    border-radius: 5px;
}

.portfolio-description h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.portfolio-description ul {
    margin: 20px 0;
    padding-left: 20px;
}

.portfolio-description li {
    margin-bottom: 10px;
}

.portfolio-gallery {
    margin-bottom: 60px;
}

.portfolio-gallery h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.gallery-item img {
    width: 100%;
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.gallery-item:hover img {
    transform: scale(1.02);
}

.portfolio-testimonial {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 40px;
    border-radius: 5px;
    margin-bottom: 60px;
}

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

.testimonial-content p {
    font-size: 1.2rem;
    font-style: italic;
    margin-bottom: 30px;
    line-height: 1.8;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.testimonial-author h4 {
    color: var(--secondary-color);
    margin-bottom: 5px;
}

.portfolio-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
}

.portfolio-navigation a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    border-radius: 5px;
    background-color: var(--light-gray);
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.portfolio-navigation a:hover {
    background-color: var(--secondary-color);
    color: var(--white);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .portfolio-main {
        flex-direction: column;
    }
    
    .portfolio-description {
        padding: 20px;
    }
    
    .portfolio-navigation {
        flex-direction: column;
        gap: 15px;
    }
    
    .portfolio-navigation a {
        justify-content: center;
    }
}