/* 汉堡菜单按钮默认隐藏 */
.nav-toggle {
    display: none;
}

/* 汉堡菜单样式 */
@media (max-width: 1309px) {

    .nav-toggle {
        display: block;
        position: absolute;
        right: 1.2rem;
        top: 50%;
        transform: translateY(-50%);
        width: 36px;
        height: 36px;
        background: none;
        border: none;
        cursor: pointer;
        z-index: 1100;
        padding: 0;
    }
    .nav-toggle span,
    .nav-toggle span::before,
    .nav-toggle span::after {
        display: block;
        position: absolute;
        width: 28px;
        height: 4px;
        background: #fff;
        border-radius: 2px;
        transition: all 0.3s;
        content: '';
    }
    .nav-toggle span {
        top: 14px;
        left: 2px;
    }
    .nav-toggle span::before {
        top: -10px;
        left: 0;
    }
    .nav-toggle span::after {
        top: 10px;
        left: 0;
    }
    .nav-menu {
        position: absolute;
        top: 60px;
        right: 1.2rem;
        background: rgba(20,20,20,0.98);
        border-radius: 16px;
        box-shadow: 0 8px 32px rgba(0,0,0,0.3);
        width: 180px;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s, padding 0.3s;
        z-index: 1099;
        padding: 0;
        flex-direction: column !important;
        gap: 0 !important;
        display: none;
    }
    .nav-menu li {
        margin: 0;
        padding: 0.5rem 1.5rem;
        text-align: right;
        width: 100%;
    }
    .nav-menu a {
        display: block;
        width: 100%;
        padding: 0.5rem 0;
        font-size: 1rem;
        white-space: nowrap;
    }
    .nav-container {
        position: relative;
        justify-content: flex-start;
        gap: 0;
        min-height: 56px;
    }

    .nav-menu.open {
        display: flex;
        max-height: 400px;
        padding: 1rem 0;
    }
    .nav-logo {
        flex: 1 1 auto;
        min-width: 0;
        overflow: hidden;
    }
    .logo-design {
        min-width: 0;
        overflow: hidden;
    }
    .logo-text-cn {
        text-overflow: ellipsis;
        overflow: hidden;
        white-space: nowrap;
        max-width: 70vw;
        display: inline-block;
    }
}
@media (max-width: 768px) {
  .navbar {
    position: static;
    width: 100%;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    border-radius: 0 !important;
    -webkit-border-radius: 0 !important;
    box-shadow: none;
  }
  .hero {
    height: auto;
    min-height: unset;
    padding-top: 0;
  }
  .partners-section {
    margin-bottom: 48px;
  }
}
/* 修复：删除无效冒号和多余缩进，恢复正常CSS结构 */
/* 自定义字体 */
@font-face {
    font-family: 'OS';
    src: url('fonts/os.woff2') format('woff2');
    font-weight: normal;
    font-display: block;
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 基础样式 */
body {
    font-family: 'OS', 'Microsoft YaHei', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    color: #e0e0e0;
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 20px;
    left: 0;
    right: 0;
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    background: rgba(20, 20, 20, 0.95);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    z-index: 1000;
    padding: 0.8rem 2rem;
    transition: all 0.3s ease;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo-design {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-left {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    text-align: right;

}

.logo-text-cn {
    color: #ffffff;
    font-size: 1rem;
    font-weight: 600;
    white-space: nowrap;
    line-height: 1.2;
    margin: 0 0 4px 0;
}

.logo-text-en {
    color: #999999;
    font-size: 0.6rem;
    font-weight: 400;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    white-space: nowrap;
    line-height: 1;
    margin-top: 1px;
}

.logo-divider {
    color: #666666;
    font-size: 1.5rem;
    font-weight: 300;
}

.logo-acronym {
    color: #ffffff;
    font-size: 2.4rem;
    font-weight: 700;
    letter-spacing: 1px;
    font-family: 'Arial', sans-serif;
}

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

.nav-menu a {
    color: #cccccc;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
}

/* 英雄区域 */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: #1b1b1b;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23ffffff" stroke-width="0.1" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.1;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding-top: 110px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, #ffffff, #cccccc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #999999;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 合作单位展示区 */
.partners-section {
    margin-top: 3rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.partners-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #e0e6ed;
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
}

.partners-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: linear-gradient(45deg, #64b5f6, #90caf9);
    border-radius: 1px;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
    margin-top: 2rem;
    width: 100%;
}

.partner-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(100,181,246,0.08);
    text-align: center;
    transition: all 0.3s cubic-bezier(.4,2,.6,1);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
    justify-content: center;
    flex-shrink: 0;
    padding: 1.2rem 0;
}

.partner-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(100, 181, 246, 0.1), transparent);
    transition: left 0.6s ease;
}

.partner-item:hover::before {
    left: 100%;
}

.partner-item:hover {
    transform: translateY(-5px);
    border-color: #64b5f6;
    box-shadow: 0 10px 25px rgba(100, 181, 246, 0.15);
}

.partner-logo-img {
    width: 170px;
    height: 60px;
    object-fit: contain;
    margin-bottom: 0;
    filter: grayscale(0.7) brightness(1.2);
    transition: all 0.3s ease;
}

.partner-item:hover .partner-logo-img {
    filter: grayscale(0) brightness(1);
    transform: scale(1.1);
}

.partner-name {
    display: none !important;
}

/* 章节标题 */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 3rem;
    color: #e0e6ed;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(45deg, #64b5f6, #90caf9);
    border-radius: 2px;
}

/* 研究方向区域 */
.research-section {
    padding: 100px 0;
    background: #2a2a2a;
}

.ai-intro {
    text-align: center;
    padding: 2rem;
    background: rgba(100, 181, 246, 0.08);
    border: 1px solid rgba(100, 181, 246, 0.2);
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.ai-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #e0e6ed;
    margin: 0;
    font-weight: 500;
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.research-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(100, 181, 246, 0.2);
    border-radius: 15px;
    padding: 2rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.research-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(100, 181, 246, 0.1), transparent);
    transition: left 0.6s ease;
}

.research-card:hover::before {
    left: 100%;
}

.research-card:hover {
    transform: translateY(-10px);
    border-color: #64b5f6;
    box-shadow: 0 20px 40px rgba(100, 181, 246, 0.1);
}



.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #ffffff;
    transition: all 0.3s ease;
    text-align: center;
}

.card-icon i {
    color: #ffffff;
}

.research-card:hover .card-icon {
    color: #64b5f6;
}

.research-card:hover .card-icon i {
    color: #64b5f6;
}

.research-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #e0e6ed;
    text-align: center;
}

.research-card p {
    color: #b0bec5;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.card-tech {
    display: flex;
    justify-content: flex-start;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: auto;
}

.tech-tag {
    background: rgba(100, 181, 246, 0.1);
    color: #64b5f6;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    border: 1px solid rgba(100, 181, 246, 0.3);
}

/* 过往案例区域 */
.cases-section {
    padding: 100px 0;
    background: #1b1b1b;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.case-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(100, 181, 246, 0.2);
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    position: relative;
}

.case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(100, 181, 246, 0.1), transparent);
    transition: left 0.6s ease;
}

.case-card:hover::before {
    left: 100%;
}

.case-card:hover {
    transform: translateY(-8px);
    border-color: #64b5f6;
    box-shadow: 0 15px 35px rgba(100, 181, 246, 0.15);
}

.case-image {
    height: 120px;
    background: linear-gradient(135deg, rgba(100, 181, 246, 0.1), rgba(144, 202, 249, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.case-icon {
    font-size: 3rem;
    color: #ffffff;
    transition: all 0.3s ease;
}

.case-icon i {
    color: #ffffff;
}

.case-card:hover .case-icon {
    color: #64b5f6;
    transform: scale(1.1);
}

.case-card:hover .case-icon i {
    color: #64b5f6;
}

.case-content {
    padding: 1.5rem;
}

.case-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #e0e6ed;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.case-category {
    color: #64b5f6;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.case-description {
    color: #b0bec5;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
}

.case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.case-tag {
    background: rgba(100, 181, 246, 0.1);
    color: #64b5f6;
    padding: 0.3rem 0.8rem;
    border-radius: 12px;
    font-size: 0.75rem;
    border: 1px solid rgba(100, 181, 246, 0.3);
    transition: all 0.3s ease;
}

.case-card:hover .case-tag {
    background: rgba(100, 181, 246, 0.2);
    border-color: #64b5f6;
}

/* 工作流程区域 */
.workflow-section {
    padding: 100px 0;
    background: #1b1b1b;
}

.workflow-intro {
    text-align: center;
    max-width: 900px;
    margin: 0 auto 4rem;
}

.workflow-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #b0bec5;
    margin: 0;
}

.workflow-steps {
    display: grid;
    gap: 3rem;
    margin: 0 auto;
}

.workflow-step {
    display: flex;
    align-items: flex-start;
    gap: 2rem;
    position: relative;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(100, 181, 246, 0.1);
    border-radius: 20px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.workflow-step:hover {
    transform: translateX(10px);
    border-color: rgba(100, 181, 246, 0.3);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 10px 30px rgba(100, 181, 246, 0.1);
}

.workflow-step::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, #64b5f6, #90caf9);
    border-radius: 2px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.workflow-step:hover::before {
    opacity: 1;
}

.step-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #64b5f6, #90caf9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    box-shadow: 0 5px 15px rgba(100, 181, 246, 0.3);
}

.step-content {
    flex: 1;
}

.step-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #ffffff;
    transition: all 0.3s ease;
}

.step-icon i {
    color: #ffffff;
}

.workflow-step:hover .step-icon {
    color: #64b5f6;
}

.workflow-step:hover .step-icon i {
    color: #64b5f6;
}

.step-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #e0e6ed;
    margin-bottom: 0.5rem;
}

.step-content h4 {
    font-size: 0.9rem;
    color: #64b5f6;
    margin-bottom: 1rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.step-content p {
    color: #b0bec5;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.step-details {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.detail-item {
    background: rgba(100, 181, 246, 0.1);
    color: #64b5f6;
    padding: 0.3rem 0.8rem;
    border-radius: 12px;
    font-size: 0.8rem;
    border: 1px solid rgba(100, 181, 246, 0.2);
    transition: all 0.3s ease;
}

.workflow-step:hover .detail-item {
    background: rgba(100, 181, 246, 0.15);
    border-color: rgba(100, 181, 246, 0.4);
}

.workflow-highlight {
    margin-top: 4rem;
    text-align: center;
    padding: 2.5rem;
    background: linear-gradient(135deg, rgba(100, 181, 246, 0.1), rgba(144, 202, 249, 0.05));
    border: 1px solid rgba(100, 181, 246, 0.2);
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.highlight-content h3 {
    font-size: 1.3rem;
    color: #e0e6ed;
    margin-bottom: 1rem;
    font-weight: 600;
}

.highlight-content p {
    color: #b0bec5;
    font-size: 1rem;
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

/* 团队成员区域 */
.team-section {
    padding: 100px 0;
    background: #2a2a2a;
}
.team-section-advisor {
    padding: 0 0 100px 0;
    background: #2a2a2a;
}
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

/* 大屏幕优化 */
@media (min-width: 1400px) {
    .team-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 2rem;
    }
}

/* 中等屏幕调整 */
@media (max-width: 1200px) and (min-width: 769px) {
    .team-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
}

.member-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(100, 181, 246, 0.2);
    border-radius: 15px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.member-card.leader {
    border-color: #64b5f6;
    background: rgba(100, 181, 246, 0.1);
}

.member-card:hover {
    transform: translateY(-5px);
    border-color: #64b5f6;
    box-shadow: 0 15px 30px rgba(100, 181, 246, 0.1);
}

.member-avatar {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    border-radius: 50%;
    background: linear-gradient(45deg, #64b5f6, #90caf9);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 600;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.member-card.leader .member-avatar {
    background: linear-gradient(45deg, #ff6b6b, #ffa726);
    box-shadow: 0 5px 15px rgba(255, 107, 107, 0.3);
}

.avatar-placeholder {
    position: relative;
    z-index: 2;
}

.member-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #e0e6ed;
}

.member-role {
    color: #64b5f6;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.member-desc {
    color: #b0bec5;
    font-size: 0.85rem;
    line-height: 1.5;
    text-align: left;
    max-height: 120px;
    overflow-y: auto;
    padding-right: 5px;
}

.member-desc::-webkit-scrollbar {
    width: 3px;
}

.member-desc::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
}

.member-desc::-webkit-scrollbar-thumb {
    background: rgba(100, 181, 246, 0.5);
    border-radius: 2px;
}

.member-desc::-webkit-scrollbar-thumb:hover {
    background: rgba(100, 181, 246, 0.8);
}

/* 联系方式区域 */
.contact-section {
    padding: 100px 0;
    background: #0a0a0a;
}

.contact-content {
    display: flex;
    justify-content: center;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 800px;
    width: 100%;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 1.5rem;
    border-radius: 15px;
    border: 1px solid rgba(100, 181, 246, 0.2);
    transition: all 0.3s ease;
}

.contact-item:hover {
    border-color: #64b5f6;
    transform: translateY(-2px);
}

.contact-icon {
    font-size: 2rem;
    min-width: 50px;
    text-align: center;
    color: #64b5f6;
}

.contact-icon i {
    color: #64b5f6;
}

.contact-item h4 {
    color: #e0e6ed;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.contact-item p {
    color: #b0bec5;
}

/* 底部 */
.footer {
    background: #0a0a0a;
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer p {
    color: #999999;
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar {
        top: 0px;
        position: relative !important;
        width: 100%;
        max-width: none;
        margin: 0;
        border-radius: 0;
        box-shadow: none;
        padding: 0.6rem 1.5rem;
        background: rgba(20, 20, 20, 0.98);
        z-index: 1000;
    }
    .nav-container {
        justify-content: center;
        gap: 0;
    }
    .nav-logo {
        display: flex;
    }
    .logo-design {
        gap: 0;
    }
    .logo-left {
        align-items: center;
        text-align: center;
    }
    .logo-text-cn {
        font-size: 1rem;
        line-height: 1.2;
    }
    .logo-text-en,
    .logo-divider,
    .logo-acronym {
        display: none;
    }
    /* .nav-menu { display: none !important; }  移除，交由汉堡菜单控制 */
    
    .hero-subtitle {
        font-size: 1rem;
        line-height: 1.5;
        margin-bottom: 2rem;
        padding: 0 10px;
        max-width: 100%;
    }
    .hero-content {
        padding-top: 90px;
    }
    
    /* 合作单位移动端优化 */
    .partners-section {
        margin-top: 2rem;
        max-width: 100%;
        padding: 0 15px;
    }
    
    .partners-title {
        font-size: 1.3rem;
        margin-bottom: 1.5rem;
    }
    
    .partners-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        margin-top: 1rem;
    }
    
    .partner-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(100, 181, 246, 0.2);
        border-radius: 12px;
        padding: 1rem;
        text-align: center;
        transition: all 0.3s ease;
        backdrop-filter: blur(10px);
        min-height: 120px;
        justify-content: center;
    }
    
    .partner-item:hover {
        transform: translateY(-3px);
        border-color: #64b5f6;
        box-shadow: 0 8px 20px rgba(100, 181, 246, 0.15);
    }
    
    .partner-logo-img {
        /* width: 60px;
        height: 60px; */
        margin-bottom: 0.8rem;
        filter: grayscale(0.3) brightness(1.1);
        transition: all 0.3s ease;
    }
    
    .partner-item:hover .partner-logo-img {
        filter: grayscale(0) brightness(1);
        transform: scale(1.05);
    }
    
    .partner-name {
        display: block;
        color: #e0e6ed;
        font-size: 0.8rem;
        font-weight: 500;
        line-height: 1.2;
        text-align: center;
    }
    
    .ai-intro {
        margin-bottom: 2rem;
        padding: 1.5rem;
    }
    
    .ai-description {
        font-size: 1rem;
        line-height: 1.6;
    }
    
    .research-grid {
        grid-template-columns: 1fr;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .case-card {
        margin-bottom: 1rem;
    }
    
    .case-image {
        height: 100px;
    }
    
    .case-icon {
        font-size: 2.5rem;
    }
    
    .case-content {
        padding: 1.2rem;
    }
    
    /* 团队成员移动端优化 */
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .member-card {
        padding: 1rem;
    }
    
    .member-avatar {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .member-card h3 {
        font-size: 1rem;
    }
    
    .member-desc {
        font-size: 0.8rem;
        max-height: 80px;
    }
    
    /* 工作流程移动端优化 */
    .workflow-steps {
        gap: 2rem;
    }
    
    .workflow-step {
        flex-direction: column;
        gap: 1.5rem;
        padding: 1.5rem;
        text-align: center;
    }
    
    .workflow-step:hover {
        transform: translateY(-5px);
    }
    
    .step-number {
        align-self: center;
    }
    
    .step-icon {
        font-size: 2rem;
        margin-bottom: 0.8rem;
    }
    
    .workflow-highlight {
        margin-top: 3rem;
        padding: 2rem;
    }
    
    .team-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 1rem;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    /* 小屏幕设备进一步优化 */
    .navbar {
        width: auto;
        top: 0px;
        /* max-width: 250px; */
        padding: 0.5rem 1.2rem;
        border-radius: 20px;
    }
    
    .logo-text-cn {
        font-size: 1rem;
    }
    
    .hero {
        min-height: unset;
        height: auto;
        padding: 20px 15px 30px;
        display: block;
    }
    
    .hero-title {
        font-size: 1.8rem;
        line-height: 1.3;
        margin-bottom: 0.8rem;
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
        margin-bottom: 1.5rem;
        padding: 0 5px;
    }
    .hero-content {
        padding-top: 70px;
    }
    
    .partners-section {
        margin-top: 1.5rem;
        padding: 0 10px;
    }
    
    .partners-title {
        font-size: 1.1rem;
        margin-bottom: 1rem;
    }
    
    .partners-grid {
        grid-template-columns: 1fr;
        gap: 0.8rem;
    }
    .partners-section {
        margin-bottom: 2rem;
    }
    
    .partner-item {
        padding: 0.8rem;
        min-height: 100px;
        flex-direction: row;
        text-align: left;
    }
    
    .partner-logo-img {
        /* width: 50px;
        height: 50px; */
        margin-bottom: 0;
        margin-right: 0.8rem;
        flex-shrink: 0;
    }
    
    .partner-name {
        font-size: 0.85rem;
        text-align: left;
        align-self: center;
    }
    
    .ai-intro {
        padding: 1.2rem;
        margin-bottom: 1.5rem;
    }
    
    .ai-description {
        font-size: 0.95rem;
        line-height: 1.5;
    }
    
    .research-card {
        padding: 1.5rem;
    }
    
    /* 团队成员小屏幕优化 */
    .team-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .member-card {
        padding: 1rem;
    }
    
    .member-avatar {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    /* 工作流程小屏幕优化 */
    .workflow-description {
        font-size: 1rem;
        line-height: 1.6;
    }
    
    .workflow-steps {
        gap: 1.5rem;
    }
    
    .workflow-step {
        padding: 1.2rem;
    }
    
    .step-number {
        width: 50px;
        height: 50px;
        font-size: 1rem;
    }
    
    .step-content h3 {
        font-size: 1.3rem;
    }
    
    .step-content h4 {
        font-size: 0.8rem;
    }
    
    .step-content p {
        font-size: 0.9rem;
    }
    
    .workflow-highlight {
        padding: 1.5rem;
    }
    
    .container {
        padding: 0 10px;
    }
}

/* 超小屏幕优化 */
@media (max-width: 400px) {
    .hero {
        min-height: 100vh;
        padding: 20px 10px 20px;
    }
    
    .hero-title {
        font-size: 1.6rem;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 0.85rem;
        margin-bottom: 1rem;
    }
    .hero-content {
        padding-top: 100px;
    }
    
    .partners-grid {
        grid-template-columns: 1fr;
        gap: 0.6rem;
    }
    
    .partner-item {
        padding: 0.5rem 0.2rem;
        min-height: 60px;
    }
    
    .partner-logo {
        font-size: 1.3rem;
    }
    
    .partner-name {
        font-size: 0.7rem;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #1a2332;
}

::-webkit-scrollbar-thumb {
    background: #64b5f6;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #90caf9;
}

/* 选中文本样式 */
::selection {
    background: rgba(100, 181, 246, 0.3);
    color: #fff;
}