body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(to bottom, #001f3f, #111111);
    color: #ffffff;
    overflow-x: hidden;
}
header {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(120deg, #4a90e2, #8e44ad);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}
header h1 {
    font-size: 2.5rem;
    background: -webkit-linear-gradient(#4a90e2, #8e44ad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0;
}
main {
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 30px;
}
.tab-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 20px;
}
.tab-item {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    padding: 20px;
    width: calc(50% - 10px);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
    overflow: hidden;
}
.tab-item:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(150, 150, 255, 0.6);
}
.tab-item img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 15px;
}
.tab-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.4));
    pointer-events: none;
    z-index: 1;
}
.tab-item h3 {
    font-size: 1.2rem;
    margin: 0 0 10px;
    position: relative;
    z-index: 2;
}
.tab-item p {
    font-size: 0.9rem;
    opacity: 0.8;
    position: relative;
    z-index: 2;
}
.article-section {
    background: rgba(255, 255, 255, 0.06);
    padding: 20px;
    border-radius: 10px;
    line-height: 1.6;
}
.article-section h2 {
    font-size: 1.8rem;
    margin-bottom: 15px;
}
.article-section pre {
    background: rgba(0, 0, 0, 0.3);
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
}
.article-section code {
    color: #d4d4d4;
    font-family: 'Courier New', Courier, monospace;
}
footer {
    text-align: center;
    padding: 20px;
    font-size: 0.9rem;
    opacity: 0.7;
}
@media (max-width: 768px) {
    .tab-item {
        width: 100%;
    }
    header h1 {
        font-size: 2rem;
    }
    main {
        padding: 15px;
    }
}