/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

:root {
    --primary-color: #1a7a3a;
    --secondary-color: #2c5f2d;
    --accent-color: #4caf50;
    --text-color: #333;
    --light-text: #666;
    --bg-color: #fff;
    --light-bg: #f5f5f5;
    --border-color: #ddd;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
    -webkit-tap-highlight-color: transparent;
}

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

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--primary-color);
    color: #fff;
    border-radius: 4px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    text-align: center;
}

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

.btn-link {
    color: var(--primary-color);
    font-weight: 500;
}

.btn-link:hover {
    text-decoration: underline;
}

.btn-more {
    display: block;
    width: fit-content;
    margin: 30px auto 0;
    padding: 10px 30px;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.btn-more:hover {
    background-color: var(--primary-color);
    color: #fff;
}

/* Header */
.header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo img {
    height: 50px;
    max-width: 200px;
}

.nav {
    transition: all 0.3s ease;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-list a {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-color);
    padding: 8px 0;
    position: relative;
    white-space: nowrap;
}

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

.nav-list a:hover::after,
.nav-list a.active::after {
    width: 100%;
}

.nav-list a:hover,
.nav-list a.active {
    color: var(--primary-color);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    transition: all 0.3s ease;
    transform-origin: center;
}

/* Banner */
.banner {
    position: relative;
    width: 100%;
    height: 600px;
    overflow: hidden;
}

.banner-slider {
    position: relative;
    width: 100%;
    height: 100%;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.slide.active {
    opacity: 1;
}

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

.slide-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    width: 90%;
    max-width: 800px;
}

.slide-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
    line-height: 1.2;
}

.slide-content p {
    font-size: 24px;
    margin-bottom: 30px;
}

/* Sections */
section {
    padding: 80px 0;
}

section h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: var(--primary-color);
}

/* Intro */
.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.intro-text p {
    margin-bottom: 20px;
    color: var(--light-text);
    font-size: 16px;
    line-height: 1.8;
}

.intro-image img {
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    width: 100%;
    height: auto;
}

/* Services */
.services {
    background-color: var(--light-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.service-item {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.service-item img {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
}

.service-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-color);
}

.service-item p {
    color: var(--light-text);
    margin-bottom: 20px;
    font-size: 14px;
    line-height: 1.6;
}

.service-item a {
    color: var(--primary-color);
    font-weight: 500;
}

/* News */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-item {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

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

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

.news-content {
    padding: 20px;
}

.news-content time {
    color: var(--light-text);
    font-size: 14px;
}

.news-content h3 {
    font-size: 18px;
    margin: 10px 0;
    line-height: 1.4;
}

.news-content p {
    color: var(--light-text);
    margin-bottom: 15px;
    font-size: 14px;
}

.news-content a {
    color: var(--primary-color);
    font-weight: 500;
}

/* CTA */
.contact-cta {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    text-align: center;
    padding: 60px 20px;
}

.contact-cta h2 {
    color: #fff;
}

.contact-cta p {
    font-size: 18px;
    margin-bottom: 30px;
}

.contact-cta .btn {
    background-color: #fff;
    color: var(--primary-color);
}

.contact-cta .btn:hover {
    background-color: var(--light-bg);
}

/* Footer */
.footer {
    background-color: #2c3e50;
    color: #fff;
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #fff;
}

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

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

.footer-col a {
    color: #bdc3c7;
    transition: color 0.3s ease;
}

.footer-col a:hover {
    color: #fff;
}

.footer-col p {
    color: #bdc3c7;
    margin-bottom: 10px;
    font-size: 14px;
}

.footer-qrcodes .qrcode-list {
    display: flex;
    gap: 15px;
}

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

.qrcode-item img {
    width: 100px;
    height: 100px;
    border-radius: 6px;
    margin-bottom: 6px;
}

.qrcode-item span {
    color: #bdc3c7;
    font-size: 13px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #34495e;
    color: #95a5a6;
    font-size: 14px;
}

/* 副标题 */
.section-subtitle {
    text-align: center;
    color: var(--light-text);
    font-size: 18px;
    margin-top: -40px;
    margin-bottom: 50px;
}

/* 数据统计 */
.stats-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 60px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item {
    color: #fff;
}

.stat-number {
    font-size: 64px;
    font-weight: 700;
    line-height: 1;
}

.stat-unit {
    font-size: 18px;
    margin-top: 5px;
}

.stat-label {
    font-size: 16px;
    margin-top: 10px;
    opacity: 0.9;
}

/* 产业链流程 */
.chain-section {
    background-color: var(--light-bg);
}

.chain-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
}

.chain-item {
    background: #fff;
    padding: 25px 20px;
    border-radius: 8px;
    text-align: center;
    width: 160px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

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

.chain-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    margin: 0 auto 15px;
}

.chain-item h3 {
    font-size: 16px;
    margin-bottom: 10px;
    color: var(--text-color);
}

.chain-item p {
    font-size: 13px;
    color: var(--light-text);
    line-height: 1.5;
}

.chain-arrow {
    font-size: 24px;
    color: var(--primary-color);
    font-weight: bold;
}

/* 园区实景 */
.gallery-section {
    background-color: #fff;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.gallery-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    aspect-ratio: 4/3;
}

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

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

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    padding: 20px 15px 15px;
    color: #fff;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.gallery-item:hover .gallery-overlay {
    transform: translateY(0);
}

.gallery-overlay span {
    font-size: 14px;
    font-weight: 500;
}

.gallery-video-link {
    display: block;
    position: relative;
    text-decoration: none;
    color: #fff;
}

.gallery-video-link .gallery-overlay {
    transform: translateY(0);
    background: linear-gradient(transparent 30%, rgba(0,0,0,0.6));
    text-align: center;
}

.gallery-video-link .gallery-overlay span {
    font-size: 16px;
    letter-spacing: 1px;
}

/* 合作伙伴 */
.partners-section {
    background: var(--light-bg);
    text-align: center;
}

.partners-cta {
    max-width: 600px;
    margin: 0 auto;
}

.partners-cta p {
    font-size: 18px;
    color: var(--light-text);
    margin-bottom: 30px;
}

/* 页面Banner */
.page-banner {
    position: relative;
    height: 300px;
    overflow: hidden;
}

.page-banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.page-banner-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.page-banner-content h1 {
    font-size: 42px;
    margin-bottom: 10px;
}

.page-banner-content p {
    font-size: 18px;
}

/* 关于我们 */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.about-text h3 {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 15px;
    color: var(--light-text);
    line-height: 1.8;
}

.about-image img {
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

/* 发展历程 */
.history-section {
    background: var(--light-bg);
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 100%;
    background: var(--primary-color);
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: 50%;
    position: relative;
    margin-bottom: 40px;
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: 50%;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    background: var(--primary-color);
    border-radius: 50%;
    border: 3px solid #fff;
    box-shadow: 0 0 0 3px var(--primary-color);
}

.timeline-date {
    position: absolute;
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
}

.timeline-item:nth-child(odd) .timeline-date {
    right: calc(50% + 30px);
}

.timeline-item:nth-child(even) .timeline-date {
    left: calc(50% + 30px);
}

.timeline-content {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    width: calc(50% - 40px);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: 40px;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 40px;
}

.timeline-content h3 {
    font-size: 18px;
    color: var(--text-color);
    margin-bottom: 10px;
}

.timeline-content p {
    font-size: 14px;
    color: var(--light-text);
}

/* 企业文化 */
.culture-section {
    background: #fff;
}

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

.culture-item {
    text-align: center;
    padding: 40px 30px;
    background: var(--light-bg);
    border-radius: 8px;
    transition: transform 0.3s ease;
}

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

.culture-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.culture-item h3 {
    font-size: 22px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.culture-item p {
    color: var(--light-text);
    line-height: 1.6;
}

/* 管理团队 */
.team-section {
    background: var(--light-bg);
    text-align: center;
}

.team-intro {
    max-width: 600px;
    margin: 0 auto 30px;
}

.team-intro p {
    font-size: 18px;
    color: var(--light-text);
    line-height: 1.8;
}

.team-cta {
    margin-top: 30px;
}

/* 服务详情 */
.services-detail-grid {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.service-detail-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.service-detail-item.reverse {
    direction: rtl;
}

.service-detail-item.reverse > * {
    direction: ltr;
}

.service-detail-item img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.service-detail-content h3 {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.service-detail-content p {
    color: var(--light-text);
    margin-bottom: 20px;
    line-height: 1.8;
}

.service-detail-content ul {
    list-style: none;
}

.service-detail-content li {
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
    color: var(--light-text);
}

.service-detail-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* 煤炭产业链 */
.coal-chain-section {
    background: var(--light-bg);
}

.coal-chain-flow {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.coal-step {
    background: #fff;
    padding: 30px 20px;
    border-radius: 8px;
    text-align: center;
    position: relative;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.coal-step::after {
    content: '→';
    position: absolute;
    right: -15px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 24px;
    color: var(--primary-color);
}

.coal-step:last-child::after {
    display: none;
}

.coal-step-num {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    margin: 0 auto 15px;
}

.coal-step h3 {
    font-size: 16px;
    color: var(--text-color);
    margin-bottom: 10px;
}

.coal-step p {
    font-size: 13px;
    color: var(--light-text);
    line-height: 1.5;
}

/* 联系我们 */
.contact-section {
    background: #fff;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h2,
.contact-form h2 {
    font-size: 28px;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
}

.contact-icon {
    font-size: 28px;
    margin-right: 15px;
    min-width: 40px;
}

.contact-detail h4 {
    font-size: 16px;
    color: var(--text-color);
    margin-bottom: 5px;
}

.contact-detail p {
    color: var(--light-text);
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

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

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.btn-submit {
    width: 100%;
    padding: 14px;
    font-size: 16px;
}

/* 地图 */
.map-section {
    background: var(--light-bg);
}

.map-container {
    width: 100%;
    height: 400px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.map-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #e8f5e9, #c8e6c9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.map-placeholder p {
    font-size: 18px;
    color: var(--primary-color);
    margin: 5px 0;
}

/* 园区总览 */
.park-overview-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.park-overview-text p {
    margin-bottom: 15px;
    color: var(--light-text);
    line-height: 1.8;
}

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

.park-stat {
    text-align: center;
    padding: 25px;
    background: var(--light-bg);
    border-radius: 8px;
}

.park-stat-num {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
    display: block;
}

.park-stat-unit {
    font-size: 16px;
    color: var(--primary-color);
}

.park-stat-label {
    display: block;
    margin-top: 8px;
    color: var(--light-text);
}

/* 园区规划 */
.park-plan-section {
    background: var(--light-bg);
}

.park-plan-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.park-plan-item {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

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

.park-plan-item img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.park-plan-item h3 {
    padding: 15px 15px 5px;
    font-size: 18px;
    color: var(--text-color);
}

.park-plan-item p {
    padding: 0 15px 15px;
    font-size: 14px;
    color: var(--light-text);
}

/* 基础设施 */
.facilities-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.facility-item {
    text-align: center;
    padding: 30px 20px;
    background: var(--light-bg);
    border-radius: 8px;
    transition: transform 0.3s ease;
}

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

.facility-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.facility-item h3 {
    font-size: 18px;
    color: var(--text-color);
    margin-bottom: 10px;
}

.facility-item p {
    font-size: 14px;
    color: var(--light-text);
    line-height: 1.6;
}

/* 智慧园区 */
.smart-section {
    background: #fff;
}

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

.smart-item {
    background: var(--light-bg);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease;
}

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

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

.smart-item h3 {
    padding: 20px 20px 10px;
    font-size: 18px;
    color: var(--text-color);
}

.smart-item p {
    padding: 0 20px 20px;
    font-size: 14px;
    color: var(--light-text);
}

/* 新闻筛选 */
.news-filter-section {
    background: var(--light-bg);
    padding: 30px 0;
}

.news-filter {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.filter-btn {
    display: inline-block;
    padding: 10px 25px;
    border: 2px solid var(--border-color);
    background: #fff;
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: #fff;
}

/* 新闻列表 */
.news-list-section {
    padding: 60px 0;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.news-list-item {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 30px;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.news-list-item:hover {
    transform: translateY(-3px);
}

.news-list-image img {
    width: 100%;
    height: 100%;
    min-height: 200px;
    object-fit: cover;
}

.news-list-content {
    padding: 25px;
}

.news-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 12px;
}

.news-meta time {
    color: var(--light-text);
    font-size: 14px;
}

.news-category {
    padding: 4px 12px;
    background: var(--light-bg);
    border-radius: 15px;
    font-size: 12px;
    color: var(--primary-color);
}

.news-list-content h3 {
    font-size: 20px;
    color: var(--text-color);
    margin-bottom: 12px;
    line-height: 1.4;
}

.news-list-content p {
    color: var(--light-text);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 15px;
}

.btn-more-small {
    display: inline-block;
    padding: 8px 20px;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: 4px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.btn-more-small:hover {
    background: var(--primary-color);
    color: #fff;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 40px;
}

.page-btn {
    padding: 10px 18px;
    border: 1px solid var(--border-color);
    background: #fff;
    border-radius: 4px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.page-btn:hover,
.page-btn.active {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: #fff;
}

.page-btn.next {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
    font-size: 24px;
    z-index: 999;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.back-to-top:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
}

/* 案例详情 */
.cases-overview {
    background: var(--light-bg);
    padding: 60px 0;
}

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

.case-stat {
    padding: 30px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.case-stat-num {
    display: block;
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
}

.case-stat-label {
    display: block;
    margin-top: 10px;
    color: var(--light-text);
    font-size: 16px;
}

.cases-section {
    padding: 60px 0;
}

.cases-section.alt-bg {
    background: var(--light-bg);
}

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

.case-item {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

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

.case-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.case-content {
    padding: 25px;
}

.case-content h3 {
    font-size: 20px;
    color: var(--text-color);
    margin-bottom: 12px;
}

.case-desc {
    color: var(--light-text);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 15px;
}

.case-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.case-tags span {
    padding: 4px 12px;
    background: var(--light-bg);
    border-radius: 15px;
    font-size: 12px;
    color: var(--primary-color);
}

/* 客户评价 */
.testimonials-section {
    background: var(--light-bg);
}

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

.testimonial-item {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

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

.testimonial-text {
    font-size: 16px;
    color: var(--light-text);
    font-style: italic;
    line-height: 1.8;
    margin-bottom: 20px;
    position: relative;
    padding-left: 20px;
    border-left: 3px solid var(--primary-color);
}

.testimonial-author strong {
    color: var(--text-color);
    font-size: 14px;
}

/* 案例详情页 */
.case-detail-hero {
    padding: 60px 0;
    background: var(--light-bg);
}

.case-detail-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.case-detail-header img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.case-detail-title h1 {
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.case-detail-title .case-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    color: var(--light-text);
    font-size: 14px;
}

.case-detail-title p {
    color: var(--light-text);
    line-height: 1.8;
}

.case-detail-body {
    padding: 60px 0;
}

.case-detail-body h2 {
    font-size: 28px;
    margin-bottom: 20px;
}

.case-detail-body p {
    color: var(--light-text);
    line-height: 1.8;
    margin-bottom: 20px;
}

.case-detail-body ul {
    list-style: none;
    margin-bottom: 30px;
}

.case-detail-body li {
    padding: 10px 0 10px 25px;
    position: relative;
    color: var(--light-text);
}

.case-detail-body li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* 设备展示 */
.equipment-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.equipment-item {
    background: var(--light-bg);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease;
}

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

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

.equipment-info {
    padding: 20px;
}

.equipment-info h3 {
    font-size: 18px;
    color: var(--text-color);
    margin-bottom: 10px;
}

.equipment-info p {
    font-size: 14px;
    color: var(--light-text);
    line-height: 1.6;
}

.equipment-specs {
    list-style: none;
    margin-top: 10px;
}

.equipment-specs li {
    font-size: 13px;
    color: var(--light-text);
    padding: 4px 0;
    border-bottom: 1px solid var(--border-color);
}

/* 绿色发展 */
.sustainability-hero {
    position: relative;
    height: 300px;
    overflow: hidden;
    text-align: center;
}

.sustainability-hero img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sustainability-hero .container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
}

.sustainability-hero h1 {
    font-size: 36px;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    margin-bottom: 15px;
}

.sustainability-hero p {
    font-size: 18px;
    color: #fff;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
    max-width: 600px;
    margin: 0 auto;
}

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

.sustainability-card {
    background: #fff;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.sustainability-card:hover {
    transform: translateY(-5px);
}

.sustainability-card-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.sustainability-card h3 {
    font-size: 20px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.sustainability-card p {
    color: var(--light-text);
    line-height: 1.8;
}

.sustainability-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.sustainability-detail.reverse {
    direction: rtl;
}

.sustainability-detail.reverse > * {
    direction: ltr;
}

.sustainability-detail-text h3 {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.sustainability-detail-text p {
    color: var(--light-text);
    line-height: 1.8;
    margin-bottom: 15px;
}

.sustainability-detail-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

/* 碳中和数据 */
.carbon-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.carbon-stat {
    text-align: center;
    padding: 30px 20px;
    background: var(--light-bg);
    border-radius: 8px;
}

.carbon-stat-num {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
}

.carbon-stat-label {
    display: block;
    margin-top: 10px;
    color: var(--light-text);
    font-size: 14px;
}

/* 荣誉资质 */
.honor-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.honor-item {
    text-align: center;
    padding: 30px 20px;
    background: var(--light-bg);
    border-radius: 8px;
    transition: transform 0.3s ease;
}

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

.honor-icon {
    font-size: 64px;
    margin-bottom: 15px;
}

.honor-item h3 {
    font-size: 16px;
    color: var(--text-color);
    margin-bottom: 8px;
}

.honor-item p {
    font-size: 13px;
    color: var(--light-text);
}

/* 人才招聘 */
.job-listings {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.job-item {
    background: #fff;
    border-radius: 8px;
    padding: 25px 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 20px;
    align-items: center;
    transition: transform 0.3s ease;
}

.job-item:hover {
    transform: translateY(-3px);
}

.job-info h3 {
    font-size: 18px;
    color: var(--text-color);
    margin-bottom: 8px;
}

.job-info p {
    font-size: 14px;
    color: var(--light-text);
}

.job-tags {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.job-tags span {
    padding: 4px 12px;
    background: var(--light-bg);
    border-radius: 15px;
    font-size: 12px;
    color: var(--primary-color);
}

/* 反馈表单 */
.feedback-form-section {
    padding: 60px 0;
}

.feedback-form {
    max-width: 700px;
    margin: 0 auto;
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
}

.feedback-form h2 {
    text-align: left;
    font-size: 28px;
    margin-bottom: 30px;
}

/* 知识产权 */
.ip-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.ip-item {
    text-align: center;
    padding: 30px 20px;
    background: var(--light-bg);
    border-radius: 8px;
}

.ip-item-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.ip-item h3 {
    font-size: 18px;
    color: var(--text-color);
    margin-bottom: 10px;
}

.ip-item p {
    font-size: 14px;
    color: var(--light-text);
}

/* 服务定制 */
.customize-hero {
    padding: 60px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    text-align: center;
}

.customize-hero h1 {
    color: #fff;
    font-size: 36px;
    margin-bottom: 15px;
}

.customize-hero p {
    font-size: 18px;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.customize-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.customize-step {
    text-align: center;
    padding: 30px 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: relative;
}

.customize-step::after {
    content: '→';
    position: absolute;
    right: -18px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 24px;
    color: var(--primary-color);
}

.customize-step:last-child::after {
    display: none;
}

.customize-step-num {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    margin: 0 auto 15px;
}

.customize-step h3 {
    font-size: 16px;
    color: var(--text-color);
    margin-bottom: 10px;
}

.customize-step p {
    font-size: 13px;
    color: var(--light-text);
    line-height: 1.5;
}

/* 新闻详情页 */
.article-section {
    padding: 60px 0;
}

.article-container {
    max-width: 800px;
    margin: 0 auto;
}

.article-header {
    margin-bottom: 30px;
}

.article-header h1 {
    font-size: 32px;
    color: var(--text-color);
    margin-bottom: 15px;
    line-height: 1.4;
}

.article-meta {
    display: flex;
    gap: 20px;
    color: var(--light-text);
    font-size: 14px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.article-body img {
    width: 100%;
    border-radius: 8px;
    margin: 20px 0;
}

.article-body p {
    color: var(--light-text);
    line-height: 1.8;
    margin-bottom: 20px;
    font-size: 16px;
}

.article-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.article-nav a {
    color: var(--primary-color);
    font-weight: 500;
}

.article-nav a:hover {
    text-decoration: underline;
}

/* 地图页 */
.map-full {
    padding: 60px 0;
}

.map-full .map-container {
    height: 500px;
    margin-bottom: 30px;
}

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

.direction-card {
    background: #fff;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    text-align: center;
}

.direction-card h3 {
    font-size: 18px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.direction-card p {
    color: var(--light-text);
    font-size: 14px;
    line-height: 1.6;
}