/* 全局样式 */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #333;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --gray-color: #6c757d;
    --border-color: #dee2e6;
}

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

body {
    font-family: 'Arial', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
}

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

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

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

ul {
    list-style: none;
}

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

.btn {
    display: inline-block;
    background-color: var(--secondary-color);
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    text-transform: uppercase;
    font-weight: bold;
    font-size: 14px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

section {
    padding: 80px 0;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--primary-color);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 15px;
}

/* 头部样式 */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow 0.3s ease;
}

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

.logo h1 {
    font-size: 28px;
    margin: 0;
    color: var(--primary-color);
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: var(--text-color);
    font-weight: 600;
    padding: 10px 0;
    position: relative;
}

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

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

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

/* 首页英雄区样式 */
.hero {
    background-color: var(--primary-color);
    color: white;
    text-align: center;
    padding: 100px 0;
    background-image: linear-gradient(rgba(44, 62, 80, 0.8), rgba(44, 62, 80, 0.8)), url('../images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
}

.hero:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(52, 152, 219, 0.2), rgba(46, 204, 113, 0.2));
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    color: white;
    animation: fadeInDown 1s ease-out;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease-out 0.3s;
    animation-fill-mode: both;
}

.hero .btn {
    animation: fadeInUp 1s ease-out 0.6s;
    animation-fill-mode: both;
}

/* 特点区域样式 */
.features {
    background-color: var(--light-color);
}

.features h2 {
    text-align: center;
    margin-bottom: 50px;
}

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

.feature {
    text-align: center;
    padding: 30px;
    background-color: white;
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
}

.feature.animate {
    opacity: 1;
    transform: translateY(0);
}

.feature:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.feature i {
    font-size: 40px;
    color: var(--secondary-color);
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}

.feature:hover i {
    transform: scale(1.2);
}

.feature h3 {
    margin-bottom: 15px;
}

/* 服务预览区域样式 */
.services-preview h2 {
    text-align: center;
    margin-bottom: 50px;
}

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

.service {
    border-radius: 5px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
}

.service.animate {
    opacity: 1;
    transform: translateY(0);
}

.service:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.service img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.service:hover img {
    transform: scale(1.1);
}

.service h3 {
    padding: 20px 20px 10px;
}

.service p {
    padding: 0 20px 20px;
}

.services-preview .btn {
    display: block;
    width: 200px;
    margin: 0 auto;
    text-align: center;
}

/* 行动召唤区域样式 */
.cta {
    background-color: var(--secondary-color);
    color: white;
    text-align: center;
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.cta:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(44, 62, 80, 0.2), rgba(52, 152, 219, 0.2));
    z-index: 1;
}

.cta .container {
    position: relative;
    z-index: 2;
}

.cta h2, .cta p {
    color: white;
}

.cta h2 {
    animation: fadeInLeft 1s ease-out;
}

.cta p {
    animation: fadeInRight 1s ease-out 0.3s;
    animation-fill-mode: both;
}

.cta .btn {
    background-color: white;
    color: var(--secondary-color);
    margin-top: 20px;
    animation: fadeInUp 1s ease-out 0.6s;
    animation-fill-mode: both;
}

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

/* 页面头部样式 */
.page-header {
    background-color: var(--primary-color);
    color: white;
    text-align: center;
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.page-header:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(44, 62, 80, 0.2), rgba(52, 152, 219, 0.2));
    z-index: 1;
}

.page-header .container {
    position: relative;
    z-index: 2;
}

.page-header h1 {
    color: white;
    animation: fadeInDown 1s ease-out;
}

.page-header p {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease-out 0.3s;
    animation-fill-mode: both;
}

/* 服务详情页样式 */
.services-detail .service-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 80px;
    align-items: center;
}

.services-detail .service-item.reversed {
    grid-template-columns: 1fr 1fr;
    direction: rtl;
}

.services-detail .service-item.reversed .service-content {
    direction: ltr;
}

.service-img img {
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.service-content h2 {
    margin-bottom: 20px;
}

.service-content ul {
    margin-top: 20px;
    padding-left: 20px;
}

.service-content ul li {
    margin-bottom: 10px;
    position: relative;
    padding-left: 25px;
    transition: transform 0.3s ease;
}

.service-content ul li:hover {
    transform: translateX(5px);
}

.service-content ul li:before {
    content: '\f00c';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    color: var(--secondary-color);
}

/* 客户页面样式 */
.clients .intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
}

.client-categories .category {
    margin-bottom: 60px;
}

.client-categories h3 {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--secondary-color);
    display: inline-block;
}

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

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

.client:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.client-logo {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 20px;
    overflow: hidden;
    border: 3px solid var(--secondary-color);
    transition: transform 0.3s ease;
}

.client:hover .client-logo {
    transform: scale(1.1);
}

.client-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.testimonials {
    background-color: var(--light-color);
}

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

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

.testimonial {
    background-color: white;
    padding: 30px;
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: opacity 0.5s ease;
}

.testimonial:nth-child(1) {
    opacity: 1;
}

.testimonial:nth-child(n+2) {
    opacity: 0;
}

.quote {
    margin-bottom: 20px;
    position: relative;
    padding: 20px 0;
}

.quote:before {
    content: '\f10d';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    font-size: 24px;
    color: var(--secondary-color);
    opacity: 0.3;
    position: absolute;
    top: 0;
    left: 0;
}

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

.author img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin-right: 15px;
    transition: transform 0.3s ease;
}

.testimonial:hover .author img {
    transform: scale(1.1);
}

.author h4 {
    margin-bottom: 5px;
}

.author p {
    margin-bottom: 0;
    font-size: 14px;
    color: var(--gray-color);
}

/* 关于我们页面样式 */
.company-intro {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 40px;
    align-items: center;
}

.intro-image img {
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.5s ease;
}

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

.mission-vision {
    background-color: var(--light-color);
    text-align: center;
}

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

.mission, .vision, .values {
    padding: 30px;
    background-color: white;
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.mission:hover, .vision:hover, .values:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.mission .icon, .vision .icon, .values .icon {
    font-size: 40px;
    color: var(--secondary-color);
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}

.mission:hover .icon, .vision:hover .icon, .values:hover .icon {
    transform: scale(1.2);
}

.team h2, .team > p {
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.team h2 {
    margin-bottom: 20px;
}

.team > p {
    margin-bottom: 50px;
}

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

.team-member {
    text-align: center;
    padding-bottom: 20px;
    border-radius: 5px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    opacity: 0;
    transform: translateY(20px);
}

.team-member.animate {
    opacity: 1;
    transform: translateY(0);
}

.member-photo {
    height: 250px;
    overflow: hidden;
    margin-bottom: 20px;
}

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

.team-member:hover .member-photo img {
    transform: scale(1.1);
}

.team-member h3 {
    margin-bottom: 5px;
}

.team-member > p {
    color: var(--secondary-color);
    font-weight: bold;
    margin-bottom: 20px;
}

.member-bio {
    padding: 0 20px;
}

.company-history h2 {
    text-align: center;
    margin-bottom: 50px;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline:before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background-color: var(--secondary-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
    opacity: 0;
    transform: translateY(20px);
}

.timeline-item.animate {
    opacity: 1;
    transform: translateY(0);
}

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

.timeline-item:nth-child(odd) {
    padding-right: 50%;
    text-align: right;
}

.timeline-item:nth-child(even) {
    padding-left: 50%;
}

.year {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--secondary-color);
    color: white;
    padding: 5px 10px;
    border-radius: 20px;
    font-weight: bold;
    transition: transform 0.3s ease;
}

.timeline-item:hover .year {
    transform: translateX(-50%) scale(1.1);
}

.event {
    padding: 20px;
    background-color: white;
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.timeline-item:hover .event {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.contact h2 {
    text-align: center;
    margin-bottom: 50px;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

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

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

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

.info-item i {
    font-size: 30px;
    color: var(--secondary-color);
    margin-bottom: 15px;
    transition: transform 0.3s ease;
}

.info-item:hover i {
    transform: scale(1.2);
}

.info-item h3 {
    margin-bottom: 10px;
}

.contact-form form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group:nth-child(5), .form-group:nth-child(6) {
    grid-column: span 2;
}

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

.form-group input, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    transition: border-color 0.3s ease;
}

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

.form-group input.error, .form-group textarea.error {
    border-color: var(--accent-color);
}

.error-message {
    color: var(--accent-color);
    font-size: 12px;
    margin-top: 5px;
}

.success-message {
    background-color: #d4edda;
    color: #155724;
    padding: 10px;
    border-radius: 5px;
    margin-top: 20px;
    text-align: center;
    grid-column: span 2;
}

.contact-form .btn {
    grid-column: span 2;
    justify-self: end;
}

/* 页脚样式 */
footer {
    background-color: var(--dark-color);
    color: white;
    padding: 60px 0 20px;
}

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

.footer-logo h3, .footer-links h3, .footer-contact h3 {
    color: white;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-links ul li {
    margin-bottom: 10px;
    transition: transform 0.3s ease;
}

.footer-links ul li:hover {
    transform: translateX(5px);
}

.footer-links ul li a {
    color: #aaa;
}

.footer-links ul li a:hover {
    color: white;
}

.footer-contact p {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    transition: transform 0.3s ease;
}

.footer-contact p:hover {
    transform: translateX(5px);
}

.footer-contact p i {
    margin-right: 10px;
    color: var(--secondary-color);
}

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

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

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.animate-on-scroll.animate {
    opacity: 1;
    transform: translateY(0);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .services-detail .service-item,
    .services-detail .service-item.reversed {
        grid-template-columns: 1fr;
        direction: ltr;
    }

    .company-intro {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    header .container {
        flex-direction: column;
    }

    nav ul {
        margin-top: 20px;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .timeline:before {
        left: 20px;
    }

    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        padding-left: 60px;
        padding-right: 0;
        text-align: left;
    }

    .year {
        left: 20px;
        transform: translateX(-50%);
    }

    .contact-info {
        grid-template-columns: 1fr;
    }

    .contact-form form {
        grid-template-columns: 1fr;
    }

    .form-group:nth-child(5), .form-group:nth-child(6),
    .contact-form .btn {
        grid-column: span 1;
    }
}

@media (max-width: 576px) {
    nav ul {
        flex-direction: column;
        align-items: center;
    }

    nav ul li {
        margin: 10px 0;
    }
}