/* AI前沿页面样式 */

/* 英雄区域样式 */
.frontier-hero {
    background: linear-gradient(135deg, #000 0%, #111 100%);
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.frontier-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%2300e676' fill-opacity='0.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.1;
}

.frontier-hero-content {
    text-align: center;
    color: #fff;
    position: relative;
    z-index: 1;
}

.frontier-hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.frontier-hero-content p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
    color: rgba(255, 255, 255, 0.8);
}

/* 技术洞察样式 */
.tech-insights {
    padding: 100px 0;
    background-color: #111;
    color: #fff;
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.insight-placeholder {
    width: 100%;
    height: 100%;
}

.insight-meta {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-bottom: 10px;
}

.insight-category {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

.insights-more {
    margin-top: 30px;
    text-align: center;
}

.insight-card {
    background-color: #222;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

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

.insight-image {
    height: 200px;
    overflow: hidden;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.insight-content {
    padding: 25px;
}

.insight-date {
    font-size: 0.9rem;
    color: #00e676;
    margin-bottom: 10px;
    display: block;
}

.insight-content h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #fff;
}

.insight-content p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
    margin-bottom: 20px;
}

.read-more {
    color: #00e676;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

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

.read-more:hover i {
    transform: translateX(5px);
}

/* 研究实验室样式 */
.research-lab {
    padding: 100px 0;
    background-color: #000;
    color: #fff;
}

.lab-content {
    display: flex;
    align-items: center;
    gap: 50px;
    margin-top: 50px;
}

.lab-image {
    flex: 1;
    position: relative;
}

.lab-image img {
    width: 100%;
    max-width: 500px;
    border-radius: 10px;
    position: relative;
    z-index: 1;
}

.lab-circle {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0, 230, 118, 0.2) 0%, rgba(0, 230, 118, 0.05) 100%);
    top: -50px;
    right: -50px;
    z-index: 0;
}

.tech-circle {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0, 230, 118, 0.2) 0%, rgba(0, 230, 118, 0.05) 100%);
    top: -50px;
    right: -50px;
    z-index: 0;
}

.lab-stats {
    display: flex;
    gap: 30px;
    margin-top: 20px;
}

.stat-text {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

/* 白皮书卡片（与旧版 HTML 对齐） */
.whitepapers-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.whitepaper-card {
    display: flex;
    gap: 16px;
    padding: 24px;
    background-color: #111;
    border-radius: 10px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.whitepaper-card .whitepaper-icon {
    width: 60px;
    height: 60px;
    background-color: rgba(0, 230, 118, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.whitepaper-card .whitepaper-icon i {
    font-size: 1.5rem;
    color: #00e676;
}

.whitepaper-card .whitepaper-content {
    flex: 1;
}

.whitepaper-card .whitepaper-content h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: #fff;
}

.whitepaper-card .whitepaper-content p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
    margin-bottom: 15px;
}

@media (max-width: 768px) {
    .whitepapers-grid {
        grid-template-columns: 1fr;
    }
}

/* 行业观察（与旧版 HTML 对齐） */
.industry-insights {
    padding: 100px 0;
    background-color: #111;
    color: #fff;
}

.tabs-nav {
    display: flex;
    justify-content: center;
    margin-top: 50px;
    margin-bottom: 30px;
    gap: 10px;
    flex-wrap: wrap;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: flex;
    gap: 30px;
    align-items: center;
}

.tab-image {
    flex: 1;
    min-height: 220px;
    border-radius: 10px;
    overflow: hidden;
}

.tab-placeholder {
    width: 100%;
    height: 100%;
    min-height: 220px;
}

.tab-text {
    flex: 1;
}

.tab-text p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: 16px;
}

@media (max-width: 992px) {
    .tab-pane.active {
        flex-direction: column;
        align-items: stretch;
    }
}

/* 未来展望（与旧版 HTML 对齐） */
.outlook-content {
    display: flex;
    align-items: center;
    gap: 50px;
    margin-top: 50px;
    position: relative;
    z-index: 1;
}

.outlook-image {
    flex: 1;
    position: relative;
}

.outlook-image img {
    width: 100%;
    max-width: 500px;
    border-radius: 10px;
    position: relative;
    z-index: 1;
}

.outlook-text {
    flex: 1;
}

.outlook-list {
    list-style: none;
    padding-left: 0;
    margin: 16px 0 18px;
}

.outlook-list li {
    margin: 10px 0;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
}

.outlook-list i {
    color: #00e676;
    margin-right: 8px;
}

@media (max-width: 992px) {
    .outlook-content {
        flex-direction: column;
        align-items: stretch;
    }
}

/* 学术合作（与旧版 HTML 对齐） */
.cooperation-intro {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin: 0 0 24px;
}

.cooperation-partners {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 28px;
}

.partner-logo {
    height: 80px;
    background-color: #222;
    border-radius: 10px;
    overflow: hidden;
}

.logo-placeholder {
    width: 100%;
    height: 100%;
}

.cooperation-programs h3 {
    margin: 0 0 16px;
}

.programs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.program-item {
    background-color: #111;
    border-radius: 10px;
    padding: 18px;
}

.program-item h4 {
    margin: 0 0 10px;
}

.program-item p {
    margin: 0;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

@media (max-width: 768px) {
    .cooperation-partners {
        grid-template-columns: repeat(2, 1fr);
    }

    .programs-grid {
        grid-template-columns: 1fr;
    }
}

.lab-text {
    flex: 1;
}

.lab-text p {
    margin-bottom: 20px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
}

/* 研究方向样式 */
.research-directions {
    padding: 100px 0;
    background-color: #111;
    color: #fff;
}

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

.direction-card {
    background-color: #222;
    padding: 40px 30px;
    border-radius: 10px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.direction-icon {
    width: 80px;
    height: 80px;
    background-color: rgba(0, 230, 118, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.direction-icon i {
    font-size: 2rem;
    color: #00e676;
}

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

.direction-card p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
    margin-bottom: 20px;
}

.articles-list {
    max-width: 860px;
    margin: 0 auto;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.articles-list-item {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    text-decoration: none;
    color: inherit;
}

.articles-list-title {
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.35;
}

.articles-list-date {
    font-size: 0.95rem;
    opacity: 0.8;
    white-space: nowrap;
}

.articles-list-item:hover .articles-list-title {
    color: #00e676;
}

@media (max-width: 640px) {
    .articles-list-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }

    .articles-list-date {
        opacity: 0.7;
    }
}

.articles-page .frontier-hero-content {
    text-align: left;
    max-width: 860px;
    margin: 0 auto;
}

.articles-page .frontier-hero-content p {
    margin: 0;
    max-width: 720px;
}

.articles-page .section-header {
    text-align: left;
    margin-bottom: 24px;
}

.articles-page .section-header p {
    margin: 0;
    max-width: none;
}

/* 技术白皮书样式 */
.tech-whitepapers {
    padding: 100px 0;
    background-color: #000;
    color: #fff;
}

.whitepapers-list {
    margin-top: 50px;
}

.whitepaper-item {
    display: flex;
    align-items: center;
    padding: 30px;
    background-color: #111;
    border-radius: 10px;
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}

.whitepaper-item:hover {
    transform: translateX(10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.whitepaper-icon {
    width: 60px;
    height: 60px;
    background-color: rgba(0, 230, 118, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    flex-shrink: 0;
}

.whitepaper-icon i {
    font-size: 1.5rem;
    color: #00e676;
}

.whitepaper-content {
    flex: 1;
}

.whitepaper-content h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: #fff;
}

.whitepaper-content p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
    margin-bottom: 15px;
}

.whitepaper-meta {
    display: flex;
    align-items: center;
    gap: 20px;
}

.meta-item {
    display: flex;
    align-items: center;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

.meta-item i {
    margin-right: 5px;
    color: #00e676;
}

.download-btn {
    margin-left: auto;
    padding: 10px 20px;
    background-color: #00e676;
    color: #fff;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.3s ease;
    flex-shrink: 0;
}

.download-btn:hover {
    background-color: #00c462;
}

/* 行业观察样式 */
.industry-observations {
    padding: 100px 0;
    background-color: #111;
    color: #fff;
}

.observations-tabs {
    display: flex;
    justify-content: center;
    margin-top: 50px;
    margin-bottom: 30px;
}

.tab-btn {
    padding: 12px 25px;
    background-color: transparent;
    border: none;
    border-bottom: 2px solid #ddd;
    color: #666;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn.active {
    color: #00e676;
    border-bottom-color: #00e676;
}

.tab-content {
    display: none;
}

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

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

.observation-card {
    background-color: #222;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.observation-image {
    height: 180px;
    overflow: hidden;
}

.observation-content {
    padding: 25px;
}

.observation-content h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #fff;
}

.observation-content p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
    margin-bottom: 15px;
}

.observation-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.observation-date {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

/* AI未来展望样式 */
.future-outlook {
    padding: 100px 0;
    background-color: #000;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.future-outlook::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%2300e676' fill-opacity='0.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.1;
}

.outlook-content {
    position: relative;
    z-index: 1;
}

.outlook-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 50px;
    margin-top: 50px;
}

.outlook-item {
    background: linear-gradient(135deg, #111 0%, #222 100%);
    padding: 40px 30px;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.outlook-item:hover {
    transform: translateY(-10px);
}

.outlook-item h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: #fff;
}

.outlook-item p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
    margin-bottom: 20px;
}

.outlook-stats {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-top: 20px;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #00e676;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

/* 学术合作样式 */
.academic-cooperation {
    padding: 100px 0;
    background-color: #111;
    color: #fff;
}

.cooperation-content {
    display: flex;
    align-items: center;
    gap: 50px;
    margin-top: 50px;
}

.cooperation-text {
    flex: 1;
}

.cooperation-text p {
    margin-bottom: 20px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.7);
}

.cooperation-logos {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.logo-item {
    height: 80px;
    background-color: #222;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.cooperation-image {
    flex: 1;
}

.cooperation-image img {
    width: 100%;
    max-width: 500px;
    border-radius: 10px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

/* 加入我们样式 */
.join-us {
    padding: 100px 0;
    background-color: #000;
    color: #fff;
    text-align: center;
}

.join-content {
    max-width: 700px;
    margin: 0 auto;
}

.join-content p {
    margin-bottom: 30px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
}

.join-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
}

.join-btn {
    padding: 15px 30px;
    border-radius: 5px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.primary-btn {
    background-color: #00e676;
    color: #000;
}

.primary-btn:hover {
    background-color: #00c462;
}

.secondary-btn {
    background-color: transparent;
    color: #fff;
    border: 2px solid #00e676;
}

.secondary-btn:hover {
    background-color: rgba(0, 230, 118, 0.1);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .insights-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .lab-content {
        flex-direction: column;
    }

    .outlook-grid {
        grid-template-columns: 1fr;
    }

    .cooperation-content {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .frontier-hero-content h1 {
        font-size: 2.5rem;
    }

    .insights-grid {
        grid-template-columns: 1fr;
    }

    .whitepaper-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .whitepaper-icon {
        margin-bottom: 20px;
    }

    .download-btn {
        margin-left: 0;
        margin-top: 20px;
        display: block;
        text-align: center;
    }

    .whitepaper-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .observations-tabs {
        flex-wrap: wrap;
    }

    .tab-btn {
        flex: 1 0 auto;
    }

    .join-buttons {
        flex-direction: column;
    }
}