* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans', sans-serif;
    background: #fff;
    color: #222;
    line-height: 1.6;
}

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

/* Header */
header {
    background: #fff;
    border-bottom: 1px solid #e5e5e5;
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    height: 50px;
    object-fit: contain;
}

nav ul {
    display: flex;
    gap: 30px;
    list-style: none;
}

nav a {
    text-decoration: none;
    color: #222;
    font-weight: 600;
    transition: color 0.2s;
}

nav a:hover {
    color: #666;
}

/* Main Article */
.main-article {
    margin: 40px 0;
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
}

.article-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 4px;
}

.article-content h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    line-height: 1.2;
}

.article-content h2 {
    font-size: 1.3rem;
    color: #666;
    font-weight: 400;
    margin-bottom: 20px;
}

.article-meta {
    color: #999;
    font-size: 0.9rem;
    margin-bottom: 30px;
}

.article-body {
    font-size: 1.1rem;
    line-height: 1.8;
}

.article-body p {
    margin-bottom: 20px;
}

/* Related Articles Grid */
.related-section {
    margin: 60px 0;
    padding: 40px 0;
    border-top: 1px solid #e5e5e5;
}

.related-section h3 {
    font-size: 1.5rem;
    margin-bottom: 30px;
}

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

.related-card {
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s;
}

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

.related-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 4px;
    margin-bottom: 15px;
}

.related-card h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    line-height: 1.3;
}

.related-card p {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Footer */
footer {
    background: #f8f8f8;
    border-top: 1px solid #e5e5e5;
    padding: 40px 0;
    margin-top: 60px;
}

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

.footer-logo {
    height: 40px;
    object-fit: contain;
}

.footer-info {
    text-align: right;
    color: #666;
    font-size: 0.9rem;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Responsive */
@media (max-width: 768px) {
    .main-article {
        grid-template-columns: 1fr;
    }

    .article-content h1 {
        font-size: 1.8rem;
    }

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

    nav ul {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: 1px solid #e5e5e5;
        padding: 20px;
    }

    nav ul.active {
        display: flex;
    }

    .menu-toggle {
        display: block;
    }

    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .footer-info {
        text-align: center;
    }
}