/* Global Styles */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --text-color: #333;
    --text-light: #7f8c8d;
    --white: #fff;
    --black: #000;
    --gray: #95a5a6;
    --light-gray: #f5f5f5;
    --transition: all 0.3s ease;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --border-radius: 4px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
    overflow-x: hidden;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 15px;
    color: var(--dark-color);
}

p {
    margin-bottom: 15px;
}

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

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

ul {
    list-style: none;
}

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

.btn {
    display: inline-block;
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 12px 25px;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 14px;
}

.btn:hover {
    background-color: var(--accent-color);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--box-shadow);
}

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

.section-title h2 {
    font-size: 36px;
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
}

.divider {
    width: 80px;
    height: 3px;
    background-color: var(--secondary-color);
    margin: 0 auto;
}

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

/* Header Styles */
header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    transition: var(--transition);
}

.logo-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: 700;
    color: var(--dark-color);
}

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

nav ul {
    display: flex;
    align-items: center;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    color: var(--dark-color);
    font-weight: 600;
    position: relative;
}

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

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

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

#language-toggle {
    background: none;
    border: 1px solid var(--secondary-color);
    color: var(--secondary-color);
    padding: 5px 10px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

#language-toggle:hover {
    background-color: var(--secondary-color);
    color: var(--white);
}

.mobile-menu {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

/* Hero Section */
.hero {
    height: 100vh;
    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-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
    color: var(--white);
}

.hero-content p {
    font-size: 20px;
    margin-bottom: 30px;
    color: var(--light-color);
}

/* About Section */
.about-section {
    padding: 100px 0;
    background-color: var(--light-gray);
}

.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-text {
    flex: 1;
}

.about-image {
    flex: 1;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.about-image img {
    transition: var(--transition);
}

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

/* Services Section */
.services-section {
    padding: 100px 0;
}

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

.service-item {
    background-color: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition);
}

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

.service-icon {
    width: 80px;
    height: 80px;
    background-color: var(--secondary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 30px;
}

/* Projects Section */
.projects-section {
    padding: 100px 0;
    background-color: var(--light-gray);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.project-item {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    height: 350px;
}

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

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

.project-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: var(--white);
    padding: 30px;
    opacity: 0;
    transition: var(--transition);
}

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

.project-overlay h3 {
    color: var(--white);
    margin-bottom: 5px;
}

/* Testimonials Section */
.testimonials-section {
    padding: 100px 0;
}

.testimonials-slider {
    display: flex;
    gap: 30px;
    overflow-x: auto;
    padding-bottom: 20px;
    scroll-snap-type: x mandatory;
}

.testimonial-item {
    min-width: 100%;
    scroll-snap-align: start;
}

.testimonial-content {
    background-color: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    position: relative;
}

.testimonial-content:before {
    content: '"';
    font-size: 80px;
    color: var(--secondary-color);
    opacity: 0.2;
    position: absolute;
    top: 10px;
    left: 20px;
}

.client-info {
    margin-top: 20px;
    display: flex;
    align-items: center;
}

.client-info h4 {
    margin-bottom: 5px;
}

.client-info p {
    color: var(--text-light);
    margin-bottom: 0;
}

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

.cta-section h2 {
    color: var(--white);
    margin-bottom: 20px;
}

.cta-section p {
    max-width: 700px;
    margin: 0 auto 30px;
    color: var(--light-color);
}

.cta-section .btn {
    background-color: var(--white);
    color: var(--secondary-color);
}

.cta-section .btn:hover {
    background-color: var(--accent-color);
    color: var(--white);
}

/* Footer */
footer {
    background-color: var(--dark-color);
    color: var(--light-color);
    padding: 80px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 50px;
}

.footer-col h3 {
    color: var(--white);
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

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

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

.footer-col p {
    margin-bottom: 20px;
}

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

.footer-col ul li a {
    color: var(--light-color);
    transition: var(--transition);
}

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

.contact-info li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 15px;
}

.contact-info i {
    margin-right: 15px;
    color: var(--secondary-color);
    margin-top: 5px;
}

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

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

.page-banner h1 {
    font-size: 48px;
    color: var(--white);
}

/* About Page */
.about-content-section {
    padding: 100px 0;
}

.about-content-grid {
    display: flex;
    gap: 50px;
    align-items: center;
}

.about-text {
    flex: 1;
}

.about-text h2 {
    margin-top: 30px;
}

.about-image {
    flex: 1;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.about-image img {
    transition: var(--transition);
}

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

/* Team Section */
.team-section {
    padding: 100px 0;
    background-color: var(--light-gray);
}

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

.team-member {
    background-color: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition);
}

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

.member-image {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 20px;
    border: 5px solid var(--light-gray);
}

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

/* Values Section */
.values-section {
    padding: 100px 0;
}

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

.value-item {
    text-align: center;
    padding: 30px;
    transition: var(--transition);
}

.value-icon {
    width: 80px;
    height: 80px;
    background-color: var(--secondary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 30px;
    transition: var(--transition);
}

.value-item:hover .value-icon {
    background-color: var(--accent-color);
    transform: rotateY(180deg);
}

/* Services Page */
.services-content-section {
    padding: 100px 0;
}

.service-detail {
    display: flex;
    gap: 50px;
    align-items: center;
    margin-bottom: 80px;
}

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

.service-detail-content {
    flex: 1;
}

.service-detail-image {
    flex: 1;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.service-detail-image img {
    transition: var(--transition);
}

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

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

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

.service-detail ul li:before {
    content: '';
    position: absolute;
    width: 8px;
    height: 8px;
    background-color: var(--secondary-color);
    border-radius: 50%;
    left: 0;
    top: 8px;
}

.service-process {
    margin-top: 100px;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.process-step {
    text-align: center;
    padding: 30px;
    position: relative;
}

.process-step:not(:last-child):after {
    content: '';
    position: absolute;
    width: 50px;
    height: 2px;
    background-color: var(--secondary-color);
    right: -40px;
    top: 50%;
    transform: translateY(-50%);
}

.step-number {
    width: 60px;
    height: 60px;
    background-color: var(--secondary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 20px;
    transition: var(--transition);
}

.process-step:hover .step-number {
    background-color: var(--accent-color);
    transform: scale(1.1);
}

/* Projects Page */
.projects-content-section {
    padding: 100px 0;
}

.project-filters {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.filter-btn {
    background: none;
    border: 1px solid var(--secondary-color);
    color: var(--secondary-color);
    padding: 8px 20px;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.project-card {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    position: relative;
}

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

.project-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: var(--transition);
}

.project-card:hover img {
    transform: scale(1.1);
}

.project-info {
    padding: 20px;
    background-color: var(--white);
}

.project-info h3 {
    margin-bottom: 5px;
}

.project-info p:first-of-type {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 10px;
}

/* Contact Page */
.contact-content-section {
    padding: 100px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 50px;
}

.contact-info h2 {
    margin-bottom: 30px;
}

.contact-details {
    margin-top: 40px;
}

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

.contact-icon {
    width: 50px;
    height: 50px;
    background-color: var(--light-gray);
    color: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-right: 20px;
    flex-shrink: 0;
}

.contact-text h3 {
    margin-bottom: 5px;
}

.contact-form h2 {
    margin-bottom: 30px;
}

.form-group {
    position: relative;
    margin-bottom: 25px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
}

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

.form-group label {
    position: absolute;
    top: 15px;
    left: 15px;
    color: var(--text-light);
    transition: var(--transition);
    pointer-events: none;
    background-color: var(--white);
    padding: 0 5px;
}

.form-group.focused label {
    top: -10px;
    left: 10px;
    font-size: 12px;
    color: var(--secondary-color);
}

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

.map-section {
    padding-bottom: 100px;
}

.map-section iframe {
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}
/* 项目卡片链接样式 */
a.project-card {
    display: block;
    color: inherit;
    transition: var(--transition);
}

a.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.view-project {
    color: var(--secondary-color);
    font-weight: 600;
    margin-top: 15px;
    display: flex;
    align-items: center;
    gap: 5px;
}

a.project-card:hover .view-project {
    color: var(--accent-color);
}