/* 全局样式 */
:root {
    --primary-color: #4CAF50;
    --secondary-color: #2E7D32;
    --accent-color: #8BC34A;
    --dark-color: #333;
    --light-color: #f9f9f9;
    --text-color: #333;
    --text-light: #777;
    --white: #fff;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

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;
}

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

ul {
    list-style: none;
}

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

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

section {
    padding: 80px 0;
}

h1, h2, h3, h4 {
    margin-bottom: 20px;
    line-height: 1.2;
}

h2 {
    font-size: 2.5rem;
    color: var(--dark-color);
    position: relative;
    padding-bottom: 15px;
    text-align: center;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--primary-color);
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

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

/* 头部样式 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
}

.navbar ul {
    display: flex;
}

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

.navbar ul li a {
    font-weight: 600;
    position: relative;
}

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

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

.navbar ul li a:hover {
    color: var(--primary-color);
}

.mobile-menu {
    font-size: 1.5rem;
    color: var(--primary-color);
    cursor: pointer;
    display: none;
}

/* Banner样式 */
.banner {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('/img/banner.jpg') no-repeat center center/cover;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--white);
    padding-top: 80px;
}

.banner-content {
    max-width: 800px;
    margin: 0 auto;
}

.banner h2 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    color: var(--white);
}

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

.btn-pulse {
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-pulse::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--primary-color);
    z-index: -1;
    border-radius: 50px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* 关于益达模块 */
.about-section {
    background-color: var(--light-color);
}

.about-section p {
    max-width: 800px;
    margin: 0 auto 30px;
    text-align: center;
}

.btn-more {
    display: inline-block;
    color: var(--primary-color);
    font-weight: 600;
    transition: var(--transition);
}

.btn-more:hover {
    color: var(--secondary-color);
    transform: translateX(5px);
}

/* 益达招商模块 */
.investment-section {
    background-color: var(--white);
}

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

.card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

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

.card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

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

/* 招商主管模块 */
.manager-section {
    background-color: var(--light-color);
}

.team-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.team-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

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

.team-card img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 20px;
    border: 5px solid var(--primary-color);
}

.team-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

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

.btn-contact {
    display: inline-block;
    padding: 8px 20px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50px;
    transition: var(--transition);
}

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

/* 益达资讯模块 */
.news-section {
    background-color: var(--white);
}

.accordion {
    max-width: 800px;
    margin: 50px auto 0;
}

.accordion-item {
    margin-bottom: 15px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.accordion-header {
    width: 100%;
    padding: 20px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.accordion-header:hover {
    background-color: var(--secondary-color);
}

.accordion-header i {
    transition: var(--transition);
}

.accordion-header.active i {
    transform: rotate(180deg);
}

.accordion-content {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background-color: var(--light-color);
}

.accordion-content p {
    padding: 20px;
}

.accordion-content.show {
    max-height: 500px;
}

/* 联系益达模块 */
.contact-section {
    background-color: var(--light-color);
}

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

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.contact-info p {
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}

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

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
    transition: var(--transition);
}

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

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

.contact-form button {
    width: 100%;
    padding: 15px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 5px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.contact-form button:hover {
    background-color: var(--secondary-color);
}

/* 页脚样式 */
.footer {
    background-color: var(--dark-color);
    color: var(--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 {
    font-size: 1.8rem;
    color: var(--white);
    margin-bottom: 10px;
}

.footer-logo p {
    color: #aaa;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--white);
}

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

.footer-links ul li a {
    color: #aaa;
    transition: var(--transition);
}

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

.footer-contact p {
    color: #aaa;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

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

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
    color: #aaa;
    font-size: 0.9rem;
}

.copyright a {
    color: #aaa;
    transition: var(--transition);
}

.copyright a:hover {
    color: var(--primary-color);
}

/* 关于我们页面特有样式 */
.about-banner {
    height: 300px;
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('/img/banner3.jpg') no-repeat center center/cover;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--white);
    padding-top: 80px;
}

.about-banner h2 {
    font-size: 3rem;
    margin-bottom: 10px;
    color: var(--white);
}

.about-banner p {
    font-size: 1.2rem;
}

.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 50px;
    align-items: center;
    margin-top: 50px;
}

.about-text h2 {
    text-align: left;
}

.about-text h2::after {
    left: 0;
    transform: none;
}

.about-image img {
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.timeline-section {
    background-color: var(--white);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 50px auto 0;
}

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

.timeline-item {
    position: relative;
    margin-bottom: 50px;
}

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

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

.timeline-date {
    position: absolute;
    top: 0;
    width: 120px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 20px;
    font-weight: 600;
}

.timeline-item:nth-child(odd) .timeline-date {
    right: -60px;
}

.timeline-item:nth-child(even) .timeline-date {
    left: -60px;
}

.timeline-content {
    padding: 20px;
    background-color: var(--light-color);
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.timeline-content h3 {
    color: var(--primary-color);
}

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

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

.culture-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

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

.culture-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.culture-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.team-section {
    background-color: var(--white);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.team-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

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

.team-card img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 20px;
    border: 5px solid var(--primary-color);
}

.team-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.team-card p {
    margin-bottom: 10px;
    color: var(--text-light);
}

/* 响应式设计 */
@media (max-width: 992px) {
    section {
        padding: 60px 0;
    }

    h2 {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .navbar {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 80%;
        height: calc(100vh - 80px);
        background-color: var(--white);
        box-shadow: var(--shadow);
        transition: var(--transition);
        z-index: 999;
    }

    .navbar.active {
        left: 0;
    }

    .navbar ul {
        flex-direction: column;
        padding: 20px;
    }

    .navbar ul li {
        margin: 15px 0;
    }

    .mobile-menu {
        display: block;
    }

    .banner h2 {
        font-size: 2.5rem;
    }

    .timeline::before {
        left: 30px;
    }

    .timeline-item:nth-child(odd),
    .timeline-item:nth-child(even) {
        padding-left: 80px;
        padding-right: 0;
        text-align: left;
    }

    .timeline-item:nth-child(odd) .timeline-date,
    .timeline-item:nth-child(even) .timeline-date {
        left: 0;
        right: auto;
    }
}

@media (max-width: 576px) {
    section {
        padding: 40px 0;
    }

    h2 {
        font-size: 1.8rem;
    }

    .banner h2 {
        font-size: 2rem;
    }

    .btn {
        padding: 10px 20px;
    }
}