/* 绿生恒公司网站样式 */

:root {
    --primary-color: #2E8B57;  /* 海绿色 */
    --secondary-color: #3CB371;  /* 较浅的绿色 */
    --dark-color: #1a1a1a;
    --light-color: #f8f9fa;
    --text-color: #333;
    --white: #ffffff;
    --shadow: 0 4px 6px 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);
}

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

/* 导航栏 */
header {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    letter-spacing: 2px;
    border: none;
    box-shadow: none;
}

.logo span {
    color: var(--secondary-color);
    font-weight: 600;
    margin-left: 8px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
}

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

.menu-btn {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.menu-btn span {
    width: 25px;
    height: 3px;
    background-color: var(--dark-color);
    margin: 3px 0;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 150px 0 100px;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--white);
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
    border-radius: 5px;
    transition: var(--transition);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

/* Section 通用样式 */
section {
    padding: 100px 0;
}

section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

section p {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem;
    color: #666;
}

/* 服务部分 */
.services {
    background-color: var(--light-color);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

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

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.service-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.service-card ul {
    text-align: left;
    padding-left: 1.5rem;
}

.service-card li {
    margin: 0.5rem 0;
}

/* 设备部分 */
.equipment {
    background-color: var(--white);
}

.equipment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.equipment-item {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
}

.equipment-item h3 {
    margin-bottom: 0.5rem;
}

.equipment-item p {
    color: rgba(255, 255, 255, 0.9);
}

/* 优势部分 */
.advantages {
    background-color: var(--light-color);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.advantage-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary-color);
}

.advantage-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

/* 论文成果轮播部分 */
.publications {
    background-color: var(--light-color);
}

.gallery-container {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: 15px;
    box-shadow: var(--shadow);
    background: var(--white);
}

.gallery-wrapper {
    overflow: hidden;
    position: relative;
}

.gallery-slides {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.gallery-slide {
    min-width: 100%;
    padding: 2rem;
}

.publication-card {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.pub-image {
    flex-shrink: 0;
    width: 400px;
    height: 300px;
    border-radius: 10px;
    overflow: hidden;
    background: var(--light-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pub-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    background: var(--light-color);
}

.pub-placeholder {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    font-size: 1.2rem;
    line-height: 1.6;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pub-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.pub-journal {
    display: inline-block;
    background: var(--primary-color);
    color: var(--white);
    padding: 0.3rem 0.8rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 1rem;
    width: fit-content;
}

.pub-info h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 0.8rem;
    line-height: 1.4;
}

.pub-info > p {
    text-align: left;
    margin: 0 0 1rem;
    max-width: none;
    color: #666;
}

.pub-meta {
    display: flex;
    gap: 2rem;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--light-color);
}

.pub-meta span {
    font-size: 0.9rem;
    color: #666;
}

/* 轮播导航按钮 */
.gallery-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.gallery-nav:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-50%) scale(1.1);
}

.gallery-prev {
    left: 10px;
}

.gallery-next {
    right: 10px;
}

/* 轮播指示器 */
.gallery-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 1.5rem;
}

.dot {
    width: 12px;
    height: 12px;
    background-color: rgba(46, 139, 87, 0.3);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

.dot.active,
.dot:hover {
    background-color: var(--primary-color);
    transform: scale(1.2);
}

/* 自动播放控制 */
.gallery-controls {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
}

.autoplay-btn {
    background: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 0.6rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    font-size: 0.95rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.autoplay-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

/* 联系方式部分 */
.contact {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
}

.contact h2 {
    color: var(--white);
}

.contact p {
    color: rgba(255, 255, 255, 0.9);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.contact-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    backdrop-filter: blur(10px);
}

.contact-card .icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-card h3 {
    margin-bottom: 1rem;
}

.contact-card a {
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.contact-card a:hover {
    opacity: 0.8;
}

/* 页脚 */
footer {
    background-color: var(--dark-color);
    color: var(--white);
    padding: 2rem 0;
    text-align: center;
}

footer p {
    color: #999;
    margin: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .menu-btn {
        display: flex;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        padding: 1rem;
        box-shadow: var(--shadow);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        margin: 0.5rem 0;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    section {
        padding: 60px 0;
    }

    section h2 {
        font-size: 2rem;
    }

    .team-card {
        flex-direction: column;
        padding: 2rem;
    }

    .team-photo {
        width: 150px;
        margin: 0 auto;
    }

    .photo-placeholder {
        width: 150px;
        height: 150px;
    }

    .team-stats {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.5rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .cta-button {
        padding: 0.8rem 2rem;
    }

    .team-info h3 {
        font-size: 1.5rem;
    }

    .publication-item {
        flex-direction: column;
    }

    .pub-tag {
        width: fit-content;
    }
}

/* ===========================================
   论文展示页面样式
   =========================================== */

/* 页面标题 */
.publications .hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 6rem 0 4rem;
    text-align: center;
    color: var(--white);
    margin-top: 70px;
}

.publications .hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.publications .hero p {
    font-size: 1.2rem;
    opacity: 0.95;
}

/* 论文列表 */
.publications {
    padding: 4rem 0;
}

.publications h2 {
    text-align: center;
    color: var(--primary-color);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.publications > .container > p {
    text-align: center;
    color: #666;
    font-size: 1.1rem;
    margin-bottom: 3rem;
}

.publication-list {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

/* 论文卡片项 */
.publication-item {
    display: flex;
    gap: 2rem;
    background: var(--white);
    border-radius: 15px;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    padding: 2rem;
}

.publication-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(46, 139, 87, 0.2);
}

/* 论文图片 */
.publication-image {
    flex: 0 0 400px;
    max-width: 400px;
}

.publication-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* 论文内容 */
.publication-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.publication-year {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.publication-journal {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 1rem;
    display: inline-block;
    background: rgba(46, 139, 87, 0.1);
    padding: 0.3rem 1rem;
    border-radius: 20px;
}

.publication-content h3 {
    font-size: 1.5rem;
    color: var(--dark-color);
    margin-bottom: 1rem;
    line-height: 1.4;
}

.publication-abstract {
    font-size: 1rem;
    color: #666;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

/* 论文标签 */
.publication-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-top: auto;
}

.publication-tags .tag {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 0.5rem 1.2rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.publication-tags .tag:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(46, 139, 87, 0.3);
}

/* 响应式设计 */
@media (max-width: 900px) {
    .publication-item {
        flex-direction: column;
        gap: 1.5rem;
    }

    .publication-image {
        flex: 0 0 100%;
        max-width: 100%;
    }

    .publication-image img {
        height: 250px;
    }
}

@media (max-width: 600px) {
    .publications .hero {
        padding: 4rem 0 3rem;
    }

    .publications .hero h1 {
        font-size: 2rem;
    }

    .publications .hero p {
        font-size: 1rem;
    }

    .publication-item {
        padding: 1.5rem;
    }

    .publication-year {
        font-size: 1.3rem;
    }

    .publication-content h3 {
        font-size: 1.2rem;
    }

    .publication-abstract {
        font-size: 0.95rem;
    }

    .publication-image img {
        height: 200px;
    }
}