/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
a{text-decoration:none;}
body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* 导航栏样式 */
.navbar {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-logo img {
    width: 40px;
    height: 40px;
}

.logo-text h1 {
    font-size: 18px;
    color: #2563eb;
    margin: 0;
}

.logo-text p {
    font-size: 12px;
    color: #666;
    margin: 0;
}

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

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: #2563eb;
}

.nav-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.lang-btn, .login-btn, .contact-btn {
    padding: 8px 16px;
    border: 1px solid #e5e7eb;
    background: #fff;
    color: #374151;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
}

.lang-btn:hover, .login-btn:hover, .contact-btn:hover {
    background: #f3f4f6;
    border-color: #d1d5db;
}

/* 英雄区域样式 */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 60px;
}

.hero-content {
    flex: 1;
    max-width: 50%;
}

.hero-image {
    flex: 1;
    max-width: 50%;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.2);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    margin-bottom: 20px;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    writing-mode: horizontal-tb;
    text-orientation: mixed;
}

.highlight {
    color: #fbbf24;
}

.hero-description {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 30px;
}/* 关于我们行布局 */
.about-row {
    display: flex;
    gap: 40px;
    margin-bottom: 30px;
}

.about-row > div {
    flex: 1;
}

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

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-row {
        flex-direction: column;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

.stat-number {
    display: block;
    font-size: 32px;
    font-weight: 700;
    color: #fbbf24;
}

.stat-label {
    font-size: 14px;
    opacity: 0.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

.btn {
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.3s;
    font-size: 16px;
}

.btn-primary {
    background: #2563eb;
    color: white;
}

.btn-primary:hover {
    background: #1d4ed8;
}

.btn-secondary {
    background: rgba(255,255,255,0.2);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.3);
}

.btn-outline {
    background: transparent;
    color: #2563eb;
    border: 2px solid #2563eb;
}

.btn-outline:hover {
    background: #2563eb;
    color: white;
}

.hero-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

.company-info {
    text-align: center;
    margin-top: 40px;
    opacity: 0.8;
}

.company-info p {
    margin: 5px 0;
    font-size: 14px;
}

/* 特别推荐样式 */
.special-recommendation {
    padding: 80px 0;
    background: #f8fafc;
}

.recommendation-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    align-items: start;
}

.recommendation-card {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    color: white;
    padding: 40px;
    border-radius: 16px;
    position: relative;
    overflow: hidden;
}

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

.recommendation-card h3 {
    font-size: 28px;
    margin-bottom: 16px;
}

.recommendation-card p {
    font-size: 16px;
    opacity: 0.9;
    margin-bottom: 20px;
}

.card-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(255,255,255,0.2);
    padding: 6px 12px;
    border-radius: 12px;
    font-size: 12px;
}

.recommendation-journals h4 {
    font-size: 20px;
    color: #2563eb;
    margin-bottom: 20px;
}

.journal-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.journal-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.journal-item:hover {
    transform: translateY(-2px);
}

.journal-icon {
    width: 40px;
    height: 40px;
    background: #2563eb;
    color: white;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.journal-info h5 {
    font-size: 14px;
    margin-bottom: 4px;
    color: #333;
}

.journal-info p {
    font-size: 12px;
    color: #666;
    margin: 0;
}

.journal-link {
    margin-left: auto;
    color: #2563eb;
    font-size: 16px;
}

/* 年鉴系列样式 */
.yearbooks {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #eff6ff;
    color: #2563eb;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 36px;
    color: #1f2937;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 18px;
    color: #6b7280;
    max-width: 600px;
    margin: 0 auto;
}

.yearbooks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.yearbook-card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
}

.yearbook-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.yearbook-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
    margin-bottom: 20px;
}

.yearbook-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: #1f2937;
}

.yearbook-card p {
    color: #6b7280;
    margin-bottom: 20px;
    line-height: 1.6;
}

.yearbook-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    font-size: 14px;
    color: #6b7280;
}

.yearbook-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.badge-hot { background: #fee2e2; color: #dc2626; }
.badge-recommended { background: #dbeafe; color: #2563eb; }
.badge-new { background: #d1fae5; color: #059669; }
.badge-featured { background: #fef3c7; color: #d97706; }

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

/* 期刊矩阵样式 */
.journals {
    padding: 80px 0;
    background: #f8fafc;
}

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

.journal-card {
    background: white;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

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

.journal-header {
    margin-bottom: 16px;
}

.journal-header h3 {
    font-size: 18px;
    color: #1f2937;
    margin-bottom: 8px;
}

.journal-issn {
    font-size: 14px;
    color: #6b7280;
}

.journal-description {
    color: #6b7280;
    margin-bottom: 20px;
    line-height: 1.6;
}

/* 功能特色样式 */
.features {
    padding: 80px 0;
}

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

.feature-card {
    text-align: center;
    padding: 40px 30px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    background: #2563eb;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin: 0 auto 20px;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 16px;
    color: #1f2937;
}

.feature-card p {
    color: #6b7280;
    margin-bottom: 20px;
}

.feature-list {
    list-style: none;
    text-align: left;
}

.feature-list li {
    padding: 8px 0;
    color: #6b7280;
    position: relative;
    padding-left: 20px;
}

.feature-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

/* 平台数据概览样式 */
.platform-stats {
    padding: 80px 0;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: white;
}

.stats-header {
    text-align: center;
    margin-bottom: 60px;
}

.stats-header h2 {
    font-size: 36px;
    margin-bottom: 16px;
}

.stats-header p {
    font-size: 18px;
    opacity: 0.9;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.stat-card {
    text-align: center;
    padding: 40px 20px;
    background: rgba(255,255,255,0.1);
    border-radius: 16px;
    backdrop-filter: blur(10px);
}

.stat-card .stat-icon {
    font-size: 48px;
    margin-bottom: 20px;
    opacity: 0.8;
}

.stat-card .stat-number {
    font-size: 48px;
    font-weight: 700;
    color: #fbbf24;
    display: block;
    margin-bottom: 8px;
}

.stat-card .stat-label {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.stat-card .stat-description {
    font-size: 14px;
    opacity: 0.8;
}

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

/* 技术优势样式 */
.tech-advantages {
    padding: 80px 0;
    background: #f8fafc;
}

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

.advantage-card {
    background: white;
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

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

.advantage-icon {
    width: 60px;
    height: 60px;
    background: #10b981;
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 20px;
}

.advantage-card h3 {
    font-size: 20px;
    margin-bottom: 16px;
    color: #1f2937;
}

.advantage-card p {
    color: #6b7280;
    margin-bottom: 20px;
}

.advantage-tags {
    display: flex;
    gap: 8px;
}

.tag {
    padding: 4px 12px;
    background: #eff6ff;
    color: #2563eb;
    border-radius: 12px;
    font-size: 12px;
}

/* 关于我们样式 */
.about {
    padding: 80px 0;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: start;
    margin-bottom: 60px;
}

.company-overview {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
    padding: 30px;
    background: #f8fafc;
    border-radius: 16px;
}

.company-icon {
    width: 60px;
    height: 60px;
    background: #2563eb;
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.company-details h3 {
    font-size: 24px;
    color: #1f2937;
    margin-bottom: 8px;
}

.company-details p {
    color: #6b7280;
    margin-bottom: 20px;
}

.company-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.feature-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.feature-item i {
    color: #10b981;
    margin-top: 4px;
}

.feature-item span {
    font-weight: 600;
    color: #1f2937;
}

.feature-item p {
    color: #6b7280;
    margin: 4px 0 0 0;
    font-size: 14px;
}

.publishing-strength, .international-standards, .distribution-network {
    margin-bottom: 30px;
}

.publishing-strength h3, .international-standards h3, .distribution-network h3 {
    font-size: 20px;
    color: #2563eb;
    margin-bottom: 12px;
}

.publishing-strength p, .international-standards p, .distribution-network p {
    color: #6b7280;
    line-height: 1.6;
}

.editor-info {
    margin-bottom: 40px;
}

.editor-card {
    display: flex;
    gap: 20px;
    padding: 24px;
    background: #f8fafc;
    border-radius: 16px;
    border-left: 4px solid #2563eb;
}

.editor-avatar {
    font-size: 48px;
    color: #2563eb;
}

.editor-details h4 {
    font-size: 18px;
    color: #1f2937;
    margin-bottom: 12px;
}

.editor-contact p {
    margin: 8px 0;
    color: #6b7280;
}

.editor-contact strong {
    color: #1f2937;
}

/* 年鉴定制服务样式 */
.custom-service {
    background: white;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.custom-service .service-icon {
    width: 60px;
    height: 60px;
    background: #f59e0b;
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 20px;
}

.custom-service h3 {
    font-size: 24px;
    color: #1f2937;
    margin-bottom: 24px;
}

.service-items {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}

.service-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.service-item i {
    color: #10b981;
    margin-top: 4px;
    font-size: 16px;
}

.service-content h4 {
    font-size: 16px;
    color: #1f2937;
    margin-bottom: 8px;
}

.service-content p {
    color: #6b7280;
    font-size: 14px;
    line-height: 1.6;
}

.about-image img {
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
}

.mission-vision {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.mission, .vision {
    padding: 40px;
    background: #f8fafc;
    border-radius: 16px;
}

.mission-icon, .vision-icon {
    width: 60px;
    height: 60px;
    background: #2563eb;
    color: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 20px;
}

.mission h3, .vision h3 {
    font-size: 20px;
    color: #1f2937;
    margin-bottom: 16px;
}

.mission p, .vision p {
    color: #6b7280;
    line-height: 1.6;
}

.values {
    text-align: center;
}

.values h3 {
    font-size: 28px;
    color: #1f2937;
    margin-bottom: 40px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.value-item {
    padding: 30px 20px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.value-icon {
    width: 60px;
    height: 60px;
    background: #f59e0b;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin: 0 auto 16px;
}

.value-item h4 {
    font-size: 18px;
    color: #1f2937;
    margin-bottom: 8px;
}

.value-item p {
    color: #6b7280;
    font-size: 14px;
}

/* 为什么选择我们样式 */
.why-choose-us {
    padding: 80px 0;
    background: #f8fafc;
}

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

.advantage-item {
    text-align: center;
    padding: 40px 30px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

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

.advantage-item .advantage-icon {
    width: 80px;
    height: 80px;
    background: #2563eb;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin: 0 auto 20px;
}

.advantage-item h3 {
    font-size: 20px;
    color: #1f2937;
    margin-bottom: 16px;
}

.advantage-item p {
    color: #6b7280;
    line-height: 1.6;
}

/* 学术共同体样式 */
.academic-community {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.community-header h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.community-header p {
    font-size: 18px;
    opacity: 0.9;
    max-width: 800px;
    margin: 0 auto 40px;
}

.community-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* 联系我们样式 */
.contact {
    padding: 80px 0;
}

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

.office-info h3 {
    font-size: 24px;
    color: #1f2937;
    margin-bottom: 24px;
}

.office-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.detail-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.detail-item i {
    color: #2563eb;
    margin-top: 4px;
    width: 20px;
}

.detail-item strong {
    color: #1f2937;
}

.contact-form h3 {
    font-size: 24px;
    color: #1f2937;
    margin-bottom: 24px;
}

.consultation-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
}

/* 页脚样式 */
.footer {
    background: #1f2937;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 20px;
    margin-bottom: 20px;
}

.footer-section h4 {
    font-size: 16px;
    margin-bottom: 16px;
    color: #f3f4f6;
}

.footer-section p {
    color: #9ca3af;
    line-height: 1.6;
    margin-bottom: 20px;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #374151;
    color: white;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s;
}

.social-links a:hover {
    background: #2563eb;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-links a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom-content {
    display: flex;
    align-items: center;
    gap: 20px;
}

.footer-bottom p {
    color: #9ca3af;
    margin: 0;
}

.footer-info p {
    color: #6b7280;
    margin: 0;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-actions {
        gap: 8px;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-stats {
        justify-content: center;
        gap: 20px;
    }
    
    .recommendation-content {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .mission-vision {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .yearbooks-grid {
        grid-template-columns: 1fr;
    }
}

/* 关于我们行布局样式 */
.about-row {
    display: flex;
    gap: 40px;
    margin-bottom: 30px;
}

.about-row > div {
    flex: 1;
}

/* 核心功能网格布局 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-row {
        flex-direction: column;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}