/* ===== 多页面通用样式 - pages.css ===== */
/* 此文件包含除首页外所有页面的样式 */

/* ===== 页面标题区域通用样式 ===== */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 60px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 800px;
    margin: 0 auto;
}

/* ===== 新闻列表页特有样式 ===== */
.news-categories {
    background-color: white;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 70px;
    z-index: 999;
}

.categories-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
}

.category-item {
    padding: 10px 20px;
    background-color: var(--light-color);
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.category-item.active {
    background-color: var(--primary-color);
    color: white;
}

.category-item:hover:not(.active) {
    background-color: rgba(26, 115, 232, 0.1);
}

.news-list {
    background-color: white;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.news-card {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
    background-color: white;
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.news-card.featured {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: row;
}

.news-card.featured .news-image {
    flex: 1;
    height: 300px;
}

.news-card.featured .news-content {
    flex: 1;
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-image {
    height: 200px;
    background-color: #e9ecef;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-color);
    position: relative;
}

.news-category-tag {
    position: absolute;
    top: 15px;
    left: 15px;
    background-color: var(--primary-color);
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
}

.news-content {
    padding: 20px;
}

.news-date {
    color: var(--gray-color);
    font-size: 0.9rem;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.news-date i {
    margin-right: 5px;
}

.news-content h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    line-height: 1.4;
}

.news-content p {
    color: var(--gray-color);
    margin-bottom: 15px;
}

.news-link {
    color: var(--primary-color);
    font-weight: 500;
    display: flex;
    align-items: center;
}

.news-link i {
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.news-link:hover i {
    transform: translateX(5px);
}

.popular-tags {
    background-color: white;
}

.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.tag {
    padding: 8px 15px;
    background-color: var(--light-color);
    border-radius: 30px;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.tag:hover {
    background-color: rgba(26, 115, 232, 0.1);
    color: var(--primary-color);
}

.news-subscription {
    background-color: #f5f7fa;
    text-align: center;
}

.subscription-content {
    max-width: 600px;
    margin: 0 auto;
    background-color: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.subscription-content h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.subscription-content p {
    color: var(--gray-color);
    margin-bottom: 30px;
}

.subscription-form {
    display: flex;
    gap: 10px;
}

.subscription-input {
    flex: 1;
    padding: 12px 15px;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    font-size: 1rem;
}

.subscription-input:focus {
    border-color: var(--primary-color);
    outline: none;
}

/* ===== 新闻详情页特有样式 ===== */
.article-header {
    background-color: white;
    padding: 60px 0 40px;
}

.article-meta {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    color: var(--gray-color);
    font-size: 0.9rem;
}

.article-category {
    background-color: var(--primary-color);
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-right: 15px;
}

.article-date {
    display: flex;
    align-items: center;
    margin-right: 20px;
}

.article-date i {
    margin-right: 5px;
}

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

.article-author i {
    margin-right: 5px;
}

.article-title {
    font-size: 2.5rem;
    line-height: 1.3;
    margin-bottom: 30px;
}

.article-featured-image {
    width: 100%;
    height: 400px;
    background-color: #e9ecef;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-color);
    margin-bottom: 40px;
}

.article-content {
    background-color: white;
    padding: 60px 0;
}

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

.article-body h2 {
    font-size: 1.8rem;
    margin: 40px 0 20px;
    color: var(--dark-color);
}

.article-body h3 {
    font-size: 1.4rem;
    margin: 30px 0 15px;
    color: var(--dark-color);
}

.article-body p {
    margin-bottom: 20px;
    color: var(--dark-color);
    line-height: 1.8;
}

.article-body ul, .article-body ol {
    margin-bottom: 20px;
    padding-left: 30px;
}

.article-body li {
    margin-bottom: 10px;
    color: var(--dark-color);
    line-height: 1.6;
}

.article-body blockquote {
    border-left: 4px solid var(--primary-color);
    padding: 20px 30px;
    margin: 30px 0;
    background-color: var(--light-color);
    font-style: italic;
}

.article-body .image-caption {
    text-align: center;
    color: var(--gray-color);
    font-size: 0.9rem;
    margin-top: 10px;
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 40px 0;
}

.article-tag {
    padding: 5px 10px;
    background-color: var(--light-color);
    border-radius: 4px;
    font-size: 0.8rem;
}

.article-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px 0;
    border-top: 1px solid #e0e0e0;
    border-bottom: 1px solid #e0e0e0;
    margin: 40px 0;
}

.social-share {
    display: flex;
    align-items: center;
    gap: 15px;
}

.share-text {
    font-weight: 500;
}

.share-buttons {
    display: flex;
    gap: 10px;
}

.share-button {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--light-color);
    transition: all 0.3s ease;
}

.share-button:hover {
    background-color: var(--primary-color);
    color: white;
}

.article-navigation {
    display: flex;
    justify-content: space-between;
    margin: 40px 0;
}

.nav-prev, .nav-next {
    display: flex;
    align-items: center;
    max-width: 45%;
}

.nav-prev {
    text-align: left;
}

.nav-next {
    text-align: right;
    margin-left: auto;
}

.nav-arrow {
    font-size: 1.2rem;
    margin: 0 10px;
}

.nav-text {
    font-size: 0.9rem;
    color: var(--gray-color);
}

.nav-title {
    font-weight: 500;
    margin-top: 5px;
}

.related-articles {
    background-color: #f5f7fa;
}

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

.related-card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

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

.related-image {
    height: 160px;
    background-color: #e9ecef;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-color);
}

.related-content {
    padding: 20px;
}

.related-date {
    color: var(--gray-color);
    font-size: 0.8rem;
    margin-bottom: 10px;
}

.related-content h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    line-height: 1.4;
}

.comments {
    background-color: white;
}

.comments-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.comments-count {
    font-size: 1.2rem;
    font-weight: 500;
}

.comment-form {
    background-color: var(--light-color);
    padding: 30px;
    border-radius: 8px;
    margin-bottom: 40px;
}

.form-group {
    margin-bottom: 20px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.comment-list {
    margin-top: 40px;
}

.comment-item {
    padding: 25px 0;
    border-bottom: 1px solid #e0e0e0;
}

.comment-item:last-child {
    border-bottom: none;
}

.comment-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
}

.comment-author {
    font-weight: 500;
}

.comment-date {
    color: var(--gray-color);
    font-size: 0.9rem;
}

.comment-content {
    color: var(--dark-color);
    line-height: 1.6;
}

.comment-reply {
    margin-top: 15px;
    color: var(--primary-color);
    font-size: 0.9rem;
    cursor: pointer;
}

/* ===== 技术分析页特有样式 ===== */
.tech-architecture {
    background-color: white;
}

.architecture-diagram {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.architecture-layers {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin: 40px 0;
}

.layer {
    display: flex;
    align-items: center;
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.layer-icon {
    width: 60px;
    height: 60px;
    background-color: rgba(26, 115, 232, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    flex-shrink: 0;
}

.layer-icon i {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.layer-content {
    flex: 1;
    text-align: left;
}

.layer-content h3 {
    margin-bottom: 10px;
    color: var(--dark-color);
}

.protocol-comparison {
    background-color: #f5f7fa;
}

.comparison-table {
    max-width: 1000px;
    margin: 0 auto;
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.table-header {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    background-color: var(--primary-color);
    color: white;
    font-weight: 500;
}

.table-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    border-bottom: 1px solid #e0e0e0;
}

.table-row:last-child {
    border-bottom: none;
}

.table-header div, .table-row div {
    padding: 15px 20px;
    display: flex;
    align-items: center;
}

.table-row:nth-child(even) {
    background-color: #f8f9fa;
}

.checkmark {
    color: var(--accent-color);
}

.xmark {
    color: #ea4335;
}

.performance-metrics {
    background-color: white;
}

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

.metric-card {
    background-color: var(--light-color);
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease;
}

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

.metric-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.metric-label {
    color: var(--gray-color);
    font-size: 1.1rem;
}

.security-features {
    background-color: #f5f7fa;
}

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

.feature-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 30px;
    width: 2px;
    background-color: var(--primary-color);
}

.timeline-item {
    display: flex;
    margin-bottom: 40px;
    position: relative;
}

.timeline-icon {
    width: 60px;
    height: 60px;
    background-color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 30px;
    flex-shrink: 0;
    z-index: 1;
    box-shadow: 0 0 0 4px var(--primary-color);
}

.timeline-icon i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.timeline-content {
    flex: 1;
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.timeline-content h3 {
    margin-bottom: 10px;
    color: var(--dark-color);
}

.network-optimization {
    background-color: white;
}

.optimization-steps {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
}

.optimization-step {
    flex: 1;
    min-width: 250px;
    max-width: 300px;
    background-color: var(--light-color);
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease;
}

.optimization-step:hover {
    transform: translateY(-5px);
}

.step-number {
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-weight: 700;
}

.optimization-step h3 {
    margin-bottom: 15px;
    color: var(--dark-color);
}

.compliance-standards {
    background-color: #f5f7fa;
}

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

.standard-card {
    background-color: white;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.standard-icon {
    width: 70px;
    height: 70px;
    background-color: rgba(52, 168, 83, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.standard-icon i {
    font-size: 2rem;
    color: var(--accent-color);
}

.standard-card h3 {
    margin-bottom: 10px;
    color: var(--dark-color);
}

/* ===== 安全与隐私页特有样式 ===== */
.security-hero {
    background: linear-gradient(135deg, #1a73e8, #0d47a1);
    color: white;
    padding: 100px 0;
    text-align: center;
}

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

.security-hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.security-hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.security-features {
    background-color: white;
}

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

.feature-card {
    background-color: var(--light-color);
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-left: 4px solid var(--primary-color);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background-color: rgba(26, 115, 232, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.feature-icon i {
    font-size: 2rem;
    color: var(--primary-color);
}

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

.encryption-details {
    background-color: #f5f7fa;
}

.encryption-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.encryption-text {
    flex: 1;
}

.encryption-text h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.encryption-text p {
    color: var(--gray-color);
    margin-bottom: 20px;
}

.encryption-visual {
    flex: 1;
    text-align: center;
}

.encryption-diagram {
    width: 100%;
    height: 300px;
    background-color: white;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-color);
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    position: relative;
    overflow: hidden;
}

.data-flow {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 80%;
}

.device, .server {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-color);
    color: white;
}

.encryption-path {
    flex: 1;
    height: 4px;
    background-color: var(--primary-color);
    margin: 0 20px;
    position: relative;
}

.encryption-path::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 0;
    right: 0;
    height: 20px;
    background: repeating-linear-gradient(
        90deg,
        transparent,
        transparent 10px,
        var(--primary-color) 10px,
        var(--primary-color) 20px
    );
    animation: move 2s linear infinite;
}

@keyframes move {
    0% { background-position: 0 0; }
    100% { background-position: 20px 0; }
}

.no-logs-policy {
    background-color: white;
}

.policy-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.policy-content h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.policy-content p {
    color: var(--gray-color);
    margin-bottom: 20px;
}

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

.policy-card {
    background-color: var(--light-color);
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease;
}

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

.policy-card h3 {
    margin-bottom: 15px;
    color: var(--dark-color);
}

.privacy-controls {
    background-color: #f5f7fa;
}

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

.control-item {
    background-color: white;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    display: flex;
    align-items: flex-start;
}

.control-icon {
    width: 50px;
    height: 50px;
    background-color: rgba(52, 168, 83, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    flex-shrink: 0;
}

.control-icon i {
    color: var(--accent-color);
    font-size: 1.5rem;
}

.control-text h3 {
    margin-bottom: 10px;
    color: var(--dark-color);
}

.control-text p {
    color: var(--gray-color);
}

.security-certifications {
    background-color: white;
}

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

.certification-card {
    background-color: var(--light-color);
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease;
}

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

.certification-icon {
    width: 70px;
    height: 70px;
    background-color: rgba(26, 115, 232, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.certification-icon i {
    font-size: 2rem;
    color: var(--primary-color);
}

.certification-card h3 {
    margin-bottom: 10px;
    color: var(--dark-color);
}

.privacy-faq {
    background-color: #f5f7fa;
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 20px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    overflow: hidden;
}

.faq-question {
    padding: 20px;
    background-color: white;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
}

.faq-question i {
    transition: transform 0.3s ease;
}

.faq-question.active i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    background-color: white;
}

.faq-answer.active {
    padding: 20px;
    max-height: 500px;
}

.faq-answer p {
    color: var(--gray-color);
    margin-bottom: 15px;
}

.privacy-commitment {
    background-color: white;
    text-align: center;
}

.commitment-content {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--light-color);
    padding: 40px;
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
}

.commitment-content h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.commitment-content p {
    color: var(--gray-color);
    margin-bottom: 20px;
}

/* ===== 使用帮助页特有样式 ===== */
.help-hero {
    background: linear-gradient(135deg, #1a73e8, #0d47a1);
    color: white;
    padding: 100px 0;
    text-align: center;
}

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

.help-hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.help-hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.search-box {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 15px 20px;
    border-radius: 30px;
    border: none;
    font-size: 1rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.search-button {
    position: absolute;
    right: 5px;
    top: 5px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 30px;
    padding: 10px 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.help-categories {
    background-color: white;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 70px;
    z-index: 999;
}

.categories-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
}

.category-item {
    padding: 10px 20px;
    background-color: var(--light-color);
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.category-item.active {
    background-color: var(--primary-color);
    color: white;
}

.category-item:hover:not(.active) {
    background-color: rgba(26, 115, 232, 0.1);
}

.quick-solutions {
    background-color: #f5f7fa;
}

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

.solution-card {
    background-color: white;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
    border-top: 4px solid var(--primary-color);
}

.solution-card:hover {
    transform: translateY(-10px);
}

.solution-icon {
    width: 70px;
    height: 70px;
    background-color: rgba(26, 115, 232, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.solution-icon i {
    font-size: 2rem;
    color: var(--primary-color);
}

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

.setup-tutorials {
    background-color: white;
}

.tutorial-tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 10px;
}

.tutorial-tab {
    padding: 12px 24px;
    background-color: var(--light-color);
    border: 1px solid #e0e0e0;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.tutorial-tab.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.tutorial-content {
    display: none;
}

.tutorial-content.active {
    display: block;
}

.tutorial-steps {
    max-width: 900px;
    margin: 0 auto;
}

.tutorial-step {
    display: flex;
    margin-bottom: 50px;
    align-items: flex-start;
}

.tutorial-step:last-child {
    margin-bottom: 0;
}

.step-number {
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    margin-right: 30px;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-content h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.step-content p {
    color: var(--gray-color);
    margin-bottom: 20px;
}

.step-image {
    margin: 20px 0;
    text-align: center;
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.step-image img {
    max-width: 100%;
    border-radius: 4px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.step-image-caption {
    margin-top: 10px;
    color: var(--gray-color);
    font-size: 0.9rem;
}

.step-tip {
    background-color: rgba(52, 168, 83, 0.1);
    border-left: 4px solid var(--accent-color);
    padding: 15px 20px;
    margin: 20px 0;
    border-radius: 0 4px 4px 0;
}

.step-tip h4 {
    display: flex;
    align-items: center;
    margin-bottom: 5px;
    color: var(--dark-color);
}

.step-tip h4 i {
    color: var(--accent-color);
    margin-right: 10px;
}

.common-issues {
    background-color: #f5f7fa;
}

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

.issue-card {
    background-color: white;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

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

.issue-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.issue-icon {
    width: 50px;
    height: 50px;
    background-color: rgba(234, 67, 53, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    flex-shrink: 0;
}

.issue-icon i {
    color: #ea4335;
    font-size: 1.5rem;
}

.issue-header h3 {
    margin-bottom: 0;
    color: var(--dark-color);
}

.issue-solution {
    color: var(--gray-color);
    margin-bottom: 20px;
}

.issue-link {
    color: var(--primary-color);
    font-weight: 500;
    display: flex;
    align-items: center;
}

.issue-link i {
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.issue-link:hover i {
    transform: translateX(5px);
}

.video-tutorials {
    background-color: white;
}

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

.video-card {
    background-color: var(--light-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.video-card:hover {
    transform: translateY(-10px);
}

.video-thumbnail {
    height: 180px;
    background-color: #e9ecef;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-color);
    position: relative;
}

.play-button {
    width: 60px;
    height: 60px;
    background-color: rgba(0,0,0,0.7);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background-color: rgba(0,0,0,0.7);
    color: white;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
}

.video-content {
    padding: 20px;
}

.video-meta {
    color: var(--gray-color);
    font-size: 0.9rem;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.video-meta i {
    margin-right: 5px;
}

.video-content h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    line-height: 1.4;
}

.contact-support {
    background-color: #f5f7fa;
    text-align: center;
}

.support-content {
    max-width: 800px;
    margin: 0 auto;
    background-color: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.support-content h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.support-content p {
    color: var(--gray-color);
    margin-bottom: 30px;
}

.support-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.support-option {
    text-align: center;
}

.support-icon {
    width: 70px;
    height: 70px;
    background-color: rgba(26, 115, 232, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.support-icon i {
    font-size: 2rem;
    color: var(--primary-color);
}

.support-option h3 {
    margin-bottom: 10px;
    color: var(--dark-color);
}

.support-option p {
    color: var(--gray-color);
    margin-bottom: 15px;
}

/* ===== 关于我们页特有样式 ===== */
.about-hero {
    background: linear-gradient(135deg, #1a73e8, #0d47a1);
    color: white;
    padding: 100px 0;
    text-align: center;
}

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

.about-hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.about-hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.company-intro {
    background-color: white;
}

.intro-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.intro-text {
    flex: 1;
}

.intro-text h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.intro-text p {
    color: var(--gray-color);
    margin-bottom: 20px;
}

.intro-stats {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.stat-label {
    color: var(--gray-color);
    font-size: 0.9rem;
}

.intro-image {
    flex: 1;
    text-align: center;
}

.intro-image-placeholder {
    width: 100%;
    height: 300px;
    background-color: #e9ecef;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-color);
}

.mission-vision {
    background-color: #f5f7fa;
}

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

.mission-card {
    background-color: white;
    border-radius: 8px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.mission-card:hover {
    transform: translateY(-10px);
}

.mission-icon {
    width: 80px;
    height: 80px;
    background-color: rgba(26, 115, 232, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.mission-icon i {
    font-size: 2.5rem;
    color: var(--primary-color);
}

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

.mission-card p {
    color: var(--gray-color);
}

.company-values {
    background-color: white;
}

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

.value-card {
    background-color: var(--light-color);
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease;
    border-left: 4px solid var(--primary-color);
}

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

.value-icon {
    width: 60px;
    height: 60px;
    background-color: rgba(52, 168, 83, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.value-icon i {
    font-size: 1.8rem;
    color: var(--accent-color);
}

.value-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.value-card p {
    color: var(--gray-color);
}

.team-culture {
    background-color: #f5f7fa;
}

.culture-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.culture-image {
    flex: 1;
    text-align: center;
}

.culture-image-placeholder {
    width: 100%;
    height: 300px;
    background-color: #e9ecef;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-color);
}

.culture-text {
    flex: 1;
}

.culture-text h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.culture-text p {
    color: var(--gray-color);
    margin-bottom: 20px;
}

.culture-values {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.value-item {
    display: flex;
    align-items: flex-start;
}

.value-icon {
    width: 40px;
    height: 40px;
    background-color: rgba(52, 168, 83, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    flex-shrink: 0;
}

.value-icon i {
    color: var(--accent-color);
}

.value-text h4 {
    margin-bottom: 5px;
}

.value-text p {
    color: var(--gray-color);
    font-size: 0.9rem;
    margin-bottom: 0;
}

.team-members {
    background-color: white;
}

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

.member-card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
    text-align: center;
}

.member-card:hover {
    transform: translateY(-10px);
}

.member-image {
    height: 200px;
    background-color: #e9ecef;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-color);
}

.member-info {
    padding: 20px;
}

.member-info h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
}

.member-role {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 10px;
}

.member-desc {
    color: var(--gray-color);
    font-size: 0.9rem;
}

.company-history {
    background-color: #f5f7fa;
}

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

.history-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 30px;
    width: 2px;
    background-color: var(--primary-color);
}

.timeline-item {
    display: flex;
    margin-bottom: 40px;
    position: relative;
}

.timeline-year {
    width: 60px;
    height: 60px;
    background-color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 30px;
    flex-shrink: 0;
    z-index: 1;
    box-shadow: 0 0 0 4px var(--primary-color);
    font-weight: 700;
    color: var(--primary-color);
}

.timeline-content {
    flex: 1;
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.timeline-content h3 {
    margin-bottom: 10px;
    color: var(--dark-color);
}

.careers {
    background-color: white;
}

.careers-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
}

.careers-intro h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.careers-intro p {
    color: var(--gray-color);
    margin-bottom: 30px;
}

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

.job-card {
    background-color: var(--light-color);
    border-radius: 8px;
    padding: 30px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.job-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.job-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.job-meta {
    display: flex;
    margin-bottom: 15px;
    color: var(--gray-color);
    font-size: 0.9rem;
}

.job-location, .job-type {
    margin-right: 20px;
    display: flex;
    align-items: center;
}

.job-location i, .job-type i {
    margin-right: 5px;
}

.job-desc {
    color: var(--gray-color);
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.company-awards {
    background-color: #f5f7fa;
}

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

.award-card {
    background-color: white;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

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

.award-icon {
    width: 70px;
    height: 70px;
    background-color: rgba(26, 115, 232, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.award-icon i {
    font-size: 2rem;
    color: var(--primary-color);
}

.award-card h3 {
    margin-bottom: 10px;
    color: var(--dark-color);
}

.award-card p {
    color: var(--gray-color);
    font-size: 0.9rem;
}

.contact-cta {
    background: linear-gradient(135deg, #1a73e8, #0d47a1);
    color: white;
    text-align: center;
}

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

.contact-content h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.contact-content p {
    font-size: 1.1rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

/* ===== 响应式设计 - 多页面通用 ===== */
@media (max-width: 992px) {
    .page-header h1 {
        font-size: 2rem;
    }
    
    .news-card.featured {
        flex-direction: column;
    }
    
    .news-card.featured .news-image {
        height: 200px;
    }
    
    .article-title {
        font-size: 2rem;
    }
    
    .intro-content,
    .culture-content,
    .encryption-content {
        flex-direction: column;
    }
    
    .intro-image,
    .culture-image,
    .encryption-visual {
        order: -1;
    }
    
    .culture-values {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .categories-container,
    .tutorial-nav-container {
        flex-direction: column;
        align-items: center;
    }
    
    .category-item,
    .tutorial-nav-item {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .subscription-form {
        flex-direction: column;
    }
    
    .article-featured-image {
        height: 250px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .article-navigation {
        flex-direction: column;
        gap: 20px;
    }
    
    .nav-prev, .nav-next {
        max-width: 100%;
    }
    
    .article-actions {
        flex-direction: column;
        gap: 20px;
        align-items: flex-start;
    }
    
    .tutorial-step {
        flex-direction: column;
    }
    
    .step-number {
        margin-right: 0;
        margin-bottom: 20px;
    }
    
    .intro-stats {
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
    }
    
    .stat-item {
        flex: 0 0 calc(50% - 20px);
    }
    
    .table-header, .table-row {
        grid-template-columns: 1fr;
    }
    
    .table-header div, .table-row div {
        padding: 10px 15px;
    }
    
    .table-header div:first-child, .table-row div:first-child {
        background-color: var(--light-color);
        font-weight: 500;
    }
    
    .feature-timeline::before,
    .history-timeline::before {
        left: 20px;
    }
    
    .timeline-icon,
    .timeline-year {
        width: 40px;
        height: 40px;
        margin-right: 20px;
    }
    
    .timeline-icon i {
        font-size: 1.2rem;
    }
    
    .control-item {
        flex-direction: column;
        text-align: center;
    }
    
    .control-icon {
        margin-right: 0;
        margin-bottom: 15px;
    }
    
    .data-flow {
        flex-direction: column;
        gap: 20px;
    }
    
    .encryption-path {
        width: 4px;
        height: 60px;
        margin: 10px 0;
    }
    
    .encryption-path::before {
        width: 20px;
        height: 4px;
        top: 0;
        left: -8px;
        background: repeating-linear-gradient(
            0deg,
            transparent,
            transparent 10px,
            var(--primary-color) 10px,
            var(--primary-color) 20px
        );
        animation: move-vertical 2s linear infinite;
    }
    
    @keyframes move-vertical {
        0% { background-position: 0 0; }
        100% { background-position: 0 20px; }
    }
}

@media (max-width: 576px) {
    .page-header {
        padding: 40px 0;
    }
    
    .page-header h1 {
        font-size: 1.8rem;
    }
    
    .help-hero,
    .security-hero,
    .about-hero {
        padding: 80px 0;
    }
    
    .help-hero h1,
    .security-hero h1,
    .about-hero h1 {
        font-size: 2rem;
    }
    
    .features-grid,
    .policy-cards,
    .controls-grid,
    .certifications-grid,
    .solutions-grid,
    .issues-grid,
    .videos-grid,
    .support-options,
    .mission-cards,
    .values-grid,
    .members-grid,
    .job-positions,
    .awards-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-item {
        flex: 0 0 100%;
    }
    
    .contact-content h2 {
        font-size: 2rem;
    }
}