@charset "utf-8";
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

body {
    background-image: url("https://static.igem.wiki/teams/5890/load/board.webp");
    height: 100vh;
    background-repeat: no-repeat;
    background-size: 100vw;
    background-attachment: fixed;
    width: 100vw;
    transition: 0.5s ease 0s;
    animation: load 3s;
    /* background: linear-gradient(135deg, #cf1f83, #855d76); */
    color: #e6f7ff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* 导航栏样式 */
nav {
    position: fixed;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    height: 80px;
    top: 0;
    background: rgba(255, 198, 237, 0.92);
    box-shadow: 0 4px 20px rgba(40, 0, 25, 0.6);
    overflow: visible;
    font-size: 18px;
    z-index: 10000;
    padding: 0 5%;
    backdrop-filter: blur(8px);
    transition: all 0.4s ease;
    border-bottom: 1px solid rgba(195, 64, 255, 0.3);
}

nav:hover {
    background: rgba(182, 220, 255, 0.98);
    box-shadow: 0 6px 25px rgba(99, 177, 255, 0.7);
}

.nav-name {
    width: 150px;
    height: 75px;
    border-radius: 32%;
    margin-right: 10px;
    /* box-shadow: 0 0 15px rgba(255, 255, 255, 0.7); */
}

.nav-namea {
    width: 80px;
    height: 40px;
    border-radius: 0%;
    margin-right: 0px;
    /* box-shadow: 0 0 15px rgba(255, 255, 255, 0.7); */
}


.nav-title {
    display: flex;
    align-items: center;
    font-size: 30px;
    font-weight: 700;
    color: #ffffffbf;
    text-shadow: 0 0 5px rgb(255, 255, 255);
}

.nav-title strong {
    color: #ffffff;
    font-size: 35px;
    margin-right: 8px;
}

.nav-title span {
    font-weight: 300;
    margin-left: 10px;
    font-size: 20px;
    color: #ffffff;
}

.nav-links {
    display: flex;
    height: 100%;
    position: relative;
}

.nav-item {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
}

.nav-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    height: 100%;
    padding: 0 22px;
    font-weight: 600;
    color: #ffffff;
    transition: all 0.3s ease;
    position: relative;
    z-index: 5;
    letter-spacing: 0.5px;
}

/* 悬停背景指示器 */
.hover-indicator {
    position: absolute;
    height: 100%;
    background: rgba(118, 118, 118, 0.4);
    border-radius: 6px;
    z-index: 1;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: inset 0 0 15px rgba(86, 86, 86, 0.3);
    opacity: 0;
    width: 0;
    left: 0;
    top: 0%;
}

.nav-item:hover .hover-indicator {
    opacity: 1;
    width: 100%;
}

.nav-link:hover {
    color: #ffffff;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.7);
}

.nav-link i {
    margin-right: 8px;
    font-size: 18px;
}

/* 子菜单样式 */
.has-submenu {
    position: relative;
}

.submenu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 220px;
    background: rgba(226, 237, 244, 0.95);
    border-radius: 0 0 10px 10px;
    box-shadow: 0 10px 30px rgba(74, 84, 90, 0.5);
    display: none;
    overflow: hidden;
    z-index: 1001;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(118, 202, 244, 0.2);
    border-top: none;
}

.has-submenu:hover .submenu {
    display: block;
    animation: fadeIn 0.4s ease-out;
}

.submenu a {
    display: flex;
    align-items: center;
    padding: 14px 20px;
    color: #2f2b42;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(64, 121, 255, 0.1);
}

.submenu a:last-child {
    border-bottom: none;
}

.submenu a:hover {
    background: rgba(172, 237, 255, 0.966);
    color: #ffffff;
    padding-left: 25px;
}

.submenu a i {
    width: 25px;
    font-size: 16px;
    color: #64b5f6;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 主内容区域 */
.hero {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 50vh;
    padding-top: 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(210, 25, 173, 0.1) 0%, transparent 70%);
    z-index: -1;
}

.hero-content {
    max-width: 800px;
    padding: 0 20px;
    z-index: 2;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    background: linear-gradient(to right, #f664a3, #bbdefb);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 5px 15px rgba(141, 0, 160, 0.3);
}

.hero p {
    font-size: 1.4rem;
    color: #fbbbf6;
    margin-bottom: 30px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 30px;
}

.btn {
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-primary {
    background: linear-gradient(135deg, #1976d2, #64b5f6);
    color: white;
    box-shadow: 0 5px 15px rgba(25, 118, 210, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #64b5f6;
    border: 2px solid #64b5f6;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(25, 118, 210, 0.5);
}

.btn i {
    font-size: 1.2rem;
}

/* 特性部分 */
.features {
    padding: 100px 5%;
    background: rgba(12, 35, 64, 0.6);
    border-top: 1px solid rgba(64, 156, 255, 0.2);
}

.section-title {
    text-align: center;
    margin-bottom: 70px;
}

.section-title h2 {
    font-size: 2.8rem;
    color: #e3f2fd;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(to right, #1976d2, #64b5f6);
    border-radius: 2px;
}

.section-title p {
    font-size: 1.2rem;
    color: #90caf9;
    max-width: 700px;
    margin: 20px auto 0;
    line-height: 1.7;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: rgba(24, 58, 96, 0.5);
    border-radius: 15px;
    padding: 35px;
    transition: all 0.4s ease;
    border: 1px solid rgba(64, 156, 255, 0.15);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(5px);
}

.feature-card::before {
    content: "";
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    height: 3px;
    background: linear-gradient(to right, #1976d2, #64b5f6);
    z-index: 2;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 30, 60, 0.4);
    border-color: rgba(100, 181, 246, 0.3);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: rgba(25, 118, 210, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.feature-icon i {
    font-size: 32px;
    color: #64b5f6;
}

.feature-card h3 {
    font-size: 1.6rem;
    margin-bottom: 15px;
    color: #e3f2fd;
}

.feature-card p {
    color: #bbdefb;
    line-height: 1.7;
    font-size: 1.05rem;
}

/* 页脚 */
footer {
    background: rgba(10, 25, 47, 0.9);
    padding: 40px 5%;
    text-align: center;
    margin-top: auto;
    border-top: 1px solid rgba(64, 156, 255, 0.2);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-logo {
    font-size: 28px;
    font-weight: 700;
    color: #64b5f6;
    margin-bottom: 20px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin: 25px 0;
}

.footer-links a {
    color: #90caf9;
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: #ffffff;
    text-shadow: 0 0 10px rgba(100, 181, 246, 0.7);
}

.copyright {
    color: #81d4fa;
    margin-top: 30px;
    font-size: 0.95rem;
    padding-top: 20px;
    border-top: 1px solid rgba(64, 156, 255, 0.1);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .hero p {
        font-size: 1.2rem;
    }
    
    .mobile-menu-btn {
        display: block;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .btn {
        padding: 12px 25px;
        font-size: 1rem;
    }
    
    .section-title h2 {
        font-size: 2.2rem;
    }
}

/* 动画效果 */
@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-15px);
    }
    100% {
        transform: translateY(0px);
    }
}

.floating {
    animation: float 4s ease-in-out infinite;
}



/* 加载画面样式 */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.8s ease, visibility 0.8s;
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-image {
    width: 200px;
    height: 200px;
    margin-bottom: 30px;
    border-radius: 35%;
    /* box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1); */
    animation: rotate 25s linear infinite;
        }

.loader-text {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #fc259f;
}

.progress-bar {
    width: 300px;
    height: 8px;
    background-color: #e0e0e0;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #ec95d3, #ba0775);
    transition: width 0.3s ease;
}

.percentage {
    font-size: 16px;
    color: #666;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 5px 15px rgba(106, 17, 203, 0.2);
    }
    100% {
        transform: scale(1.05);
        box-shadow: 0 10px 25px rgba(106, 17, 203, 0.3);
    }
}
@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}
/* 进度条 */
.image-progress {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 1000;
    opacity: 0.2;
}

.image-progress:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.image-progress img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.progress-ring {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 3px solid #3498db;
    border-top: 3px solid transparent;
    transform: rotate(-90deg);
    transition: stroke-dashoffset 0.3s;
}

/* footer {
    text-align: center;
    padding: 30px;
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: 10px;
    margin-top: 30px;
    color: #7f8c8d;
} */

@media (max-width: 768px) {
    .image-progress {
        width: 60px;
        height: 60px;
        bottom: 20px;
        left: 20px;
    }
}


@keyframes load{
    0%{
        background-position-y: 50px;
        opacity: 0;
    }
    100%{
        background-position-y: 0px;
        opacity: 1;
    }
}




/* 表格 */

.table-count {
    text-align: center;
    margin-bottom: 15px;
    color: #6c757d;
    font-weight: 500;
}

.tables-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.table-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.table-card.expanded {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.table-header {
    background: linear-gradient(135deg, #88bbef 0%, #3498db 100%);
    color: white;
    padding: 15px 20px;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.table-header:hover {
    background: linear-gradient(135deg, #1a252f 0%, #2980b9 100%);
}

.expand-icon {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.table-card.expanded .expand-icon {
    transform: rotate(180deg);
}

.table-content {
    padding: 0;
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.5s ease;
}

.table-card.expanded .table-content {
    max-height: 1000px;
    padding: 15px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

/* th {
    background-color: #f8f9fa;
    font-weight: 600;
    padding: 12px 10px;
    text-align: left;
    border-bottom: 2px solid #e9ecef;
    color: #495057;
    white-space: nowrap;
}

td {
    padding: 10px;
    border-bottom: 1px solid #e9ecef;
    white-space: nowrap;
}

tr:nth-child(even) {
    background-color: #f8f9fa;
}

tr:hover {
    background-color: #e9f7fe;
} */

.preview-row {
    background-color: #f8f9fa !important;
}

.instructions {
    text-align: center;
    margin-top: 20px;
    color: #6c757d;
    font-style: italic;
    padding: 10px;
    background-color: #f8f9fa;
    border-radius: 8px;
}

.expand-all-btn {
    display: block;
    margin: 0 auto 20px;
    padding: 10px 20px;
    background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.expand-all-btn:hover {
    background: linear-gradient(135deg, #1a252f 0%, #2980b9 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
    body {
        padding: 15px;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    .description {
        font-size: 1rem;
    }
    
    .table-header {
        padding: 12px 15px;
        font-size: 1rem;
    }
    
    .table-content {
        padding: 10px;
    }
}

/* references */
.header { margin: 2rem 0; text-align: center; }
        .filter-section { 
            background-color: #f8f9fa; 
            padding: 1.5rem; 
            border-radius: 8px; 
            margin-bottom: 2rem; 
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        .ref-card { 
            margin-bottom: 1rem; 
            border: none; 
            box-shadow: 0 1px 3px rgba(0,0,0,0.08); 
            transition: box-shadow 0.3s ease;
            height: 100%;
            width: 100%;
            animation: float 4s ease-in-out infinite;
            opacity: 0.8;
            transition: all 0.5s ease 0s;
            
        }
        .ref-card:hover { box-shadow: -4px 4px 12px rgba(0,0,0,0.12);opacity: 1; height: 103%;width: 103%;}
        .ref-number { font-weight: bold; color: #0d6efd; margin-right: 0.5rem; }
        .ref-authors { font-weight: 500; }
        .ref-journal { font-style: italic; color: #6c757d; }
        .ref-year { color: #dc3545; font-weight: 500; }
        .ref-doi a { color: #28a745; text-decoration: none; }
        .ref-doi a:hover { text-decoration: underline; }



/* notebook */

.subtitle {
            font-size: 1.2rem;
            opacity: 0.9;
            max-width: 800px;
            margin: 0 auto;
        }
        
        .timeline {
            position: relative;
            max-width: 1000px;
            margin: 0 auto;
        }
        
        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--light);
            transform: translateX(-50%);
            border-radius: 2px;
        }
        
        .timeline-item {
            position: relative;
            margin-bottom: 4rem;
            width: 100%;
            opacity: 0;
            transform: translateY(30px);
            transition: var(--transition);
        }
        
        .timeline-item.visible {
            opacity: 1;
            transform: translateY(0);
        }
        
        .timeline-item:nth-child(odd) .timeline-content {
            margin-left: auto;
            margin-right: 0;
        }
        
        .timeline-item:nth-child(odd) .timeline-content::before {
            left: -10px;
            border-right: 10px solid rgba(255, 255, 255, 0.15);
            border-left: none;
        }
        
        .timeline-content {
            position: relative;
            width: 45%;
            padding: 1.5rem;
            background: rgba(253, 139, 230, 0.772);
            backdrop-filter: blur(10px);
            border-radius: 10px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        
        .timeline-content:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
            background: rgba(189, 11, 100, 0.753);
        }
        
        
        .timeline-content::before {
            content: '';
            position: absolute;
            top: 20px;
            right: -10px;
            width: 0;
            height: 0;
            border-top: 10px solid transparent;
            border-bottom: 10px solid transparent;
            border-left: 10px solid rgba(255, 255, 255, 0.15);
        }
        
        .timeline-date {
            /* margin-bottom: 1%; */
            position: sticky;
            top: 10px;
            width: 180px;
            padding: 0.5rem 1rem;
            background: var(--primary);
            color: white;
            border-radius: 20px;
            text-align: center;
            font-weight: bold;
            box-shadow: var(--shadow);
            z-index: 1;
        }
        
        .timeline-item:nth-child(odd) .timeline-date {
            left: calc(55% + 20px);
        }
        
        .timeline-item:nth-child(even) .timeline-date {
            right: calc(55% + 20px);
        }
        
        .timeline-icon {
            position: absolute;
            left: 50%;
            top: 0;
            width: 40px;
            height: 40px;
            background: var(--secondary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transform: translateX(-50%);
            box-shadow: 0 0 0 4px var(--light), var(--shadow);
            z-index: 1;
        }
        
        .timeline-icon i {
            color: white;
            font-size: 1.2rem;
        }
        
        .timeline-content h3 {
            margin-bottom: 0.5rem;
            color: white;
            font-size: 1.4rem;
        }
        
        .timeline-content p {
            margin-bottom: 1rem;
            font-size: 1rem;
        }
        
        .timeline-content ul {
            padding-left: 1.5rem;
            margin-bottom: 1rem;
        }
        
        .timeline-content li {
            margin-bottom: 0.5rem;
        }
        
        .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 1rem;
        }
        
        .tag {
            padding: 0.3rem 0.8rem;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 20px;
            font-size: 0.8rem;
        }
        
        .controls {
            display: flex;
            justify-content: center;
            gap: 1rem;
            margin-top: 2rem;
            margin-bottom: 2rem;
        }
        
        .btn {
            padding: 0.8rem 1.5rem;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 30px;
            cursor: pointer;
            transition: var(--transition);
            font-weight: bold;
            box-shadow: var(--shadow);
        }
        
        .btn:hover {
            background: #2980b9;
            transform: translateY(-3px);
        }
        
        
        @media (max-width: 768px) {
            .timeline::before {
                left: 30px;
            }
            
            .timeline-content {
                width: calc(100% - 80px);
                margin-left: 80px !important;
            }
            
            .timeline-content::before {
                left: -10px !important;
                right: auto;
                border-right: 10px solid rgba(255, 255, 255, 0.15);
                border-left: none;
            }
            
            .timeline-date {
                position: relative;
                left: auto !important;
                right: auto !important;
                margin-bottom: 1rem;
                width: 100%;
            }
            
            .timeline-icon {
                left: 30px;
            }
        }
:root {
            --primary: #3498db;
            --secondary: #2ecc71;
            --accent: #e74c3c;
            --light: #f8f9fa;
            --dark: #2c3e50;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        
        
        
        @keyframes gradientBG {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }
/* 多框照片 */
.back-to-top:hover {
            background: #2980b9;
            transform: translateY(-3px);
        }
        .image-grid {
            margin: 30px 0;
            text-align: center;
            padding: 15px;
            background-color: #f8f9fa;
            border-radius: 8px;
  display: grid;
  grid-template-columns: repeat(2, 1fr); /* 2列，每列占父容器1/2宽度 */
  gap: 10px; /* 可选：图片之间的间距 */
}



.float-image {
  float: left; /* 关键：让图片向左浮动，文字环绕在右侧 */
  margin-right: 20px; /* 图片右侧与文字的间距 */
  margin-bottom: 10px; /* 图片下方与文字的间距（可选，增强可读性） */
  width: 200px; /* 图片宽度（根据需求调整） */
  height: auto; /* 保持图片比例，避免变形 */
}
.clearfix::after {
  content: "";
  display: table;
  clear: both;
}

/* 三列 */

.image-gridt {
            margin: 30px 0;
            text-align: center;
            padding: 15px;
            background-color: #f8f9fa;
            border-radius: 8px;
            display: grid;
  grid-template-columns: repeat(3, 1fr); 
  gap: 10px; /* 可选：图片之间的间距 */
}

.image-gridt img {
  width: 300px; /* 图片自适应列宽度 */
  height: 230px; /* 保持图片原始比例，防止变形 */
}


/* 菜单 */


.vertical-menu {
            width: 240px;
            background-color: #fff;
            border-radius: 8px;
            box-shadow: 0 4px 16px rgba(0,0,0,0.08);
            overflow: hidden;
          }
          
          /* 菜单项 */
          .vertical-menu a {
            display: block;
            padding: 14px 20px;
            color: #333;
            text-decoration: none;
            font-size: 15px;
            transition: all 0.25s ease;
            position: relative;
          }
          
          /* 悬停效果 */
          .vertical-menu a:hover {
            background-color: #f0f4ff;
            color: #2c7ad6;
            padding-left: 24px;
          }
          
          /* 左侧指示条 */
          .vertical-menu a:hover::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            height: 100%;
            width: 3px;
            background-color: #2c7ad6;
          }
          
          /* 当前选中项 */
          .vertical-menu a.active {
            background-color: #e6f7ff;
            color: #1890ff;
            font-weight: 500;
          }
          
          .vertical-menu a.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            height: 100%;
            width: 3px;
            background-color: #1890ff;
          }
          
          /* 分隔线 */
          .vertical-menu .divider {
            height: 1px;
            background-color: #f0f0f0;
            margin: 4px 0;}
            .containerf {
            max-width: 1500px;
            margin: 0 auto;
            background-color: white;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            overflow: hidden;
        }
        
        
        .image-containerf {
            width: 100%;
            padding: 20px;
            display: flex;
            justify-content: center;
            align-items: center;
            background-color: #f9f9f9;
        }
        
        .long-image {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }
            
            .subtitle {
                font-size: 1rem;
            }
            
            .content {
                padding: 20px;
            }
            
            .benefits {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 480px) {
            body {
                padding: 10px;
            }
            
            h1 {
                font-size: 1.8rem;
            }
            
            header {
                padding: 20px 15px;
            }
            
            .content {
                padding: 15px;
            }
        }
        .section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

 
  
  .titleimg8{
    background-image: url("https://static.igem.wiki/teams/5890/alo/65.webp");
    height: auto;
    background-repeat: no-repeat;
    background-attachment: fixed;
    width: 100vw;
    transition: 0.5s ease 0s;
    animation: load 3s;
}
  
  
  
  
  .sec{
      height: 100vh;
      width: auto;
      /* scroll-snap-align: start; */
  }
  
  
  
  @keyframes load{
      0%{
          background-position-y: 50px;
          opacity: 0;
      }
      100%{
          background-position-y: 0px;
          opacity: 1;
      }
  }


  .responsive-container {
        width: 100%;
        max-width: 1400px;
        margin: 0 auto;
        position: relative;
    }