:root {
    --primary-color: #d92027;
    --dark-color: #111111;
    --gray-bg: #f4f5f7;
    --border-color: #e0e0e0;
    --text-main: #222222;
    --text-muted: #666666;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--gray-bg);
    color: var(--text-main);
    line-height: 1.5;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header */
.site-header {
    background: #ffffff;
    border-bottom: 3px solid var(--primary-color);
    padding: 15px 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

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

.logo h1 {
    font-size: 24px;
    font-weight: 900;
    color: var(--dark-color);
    letter-spacing: -1px;
}

.logo h1 span {
    color: var(--primary-color);
}

.main-nav {
    display: flex;
    gap: 20px;
}

.main-nav a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 600;
    font-size: 15px;
    transition: color 0.2s;
}

.main-nav a:hover {
    color: var(--primary-color);
}

/* Main Layout */
.main-content {
    padding: 30px 15px;
}

.hero-section {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    margin-bottom: 40px;
}

.news-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 6px;
    transition: transform 0.2s;
}

.news-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.big-card h2 {
    font-size: 26px;
    margin: 10px 0;
    color: var(--dark-color);
}

.big-card p {
    color: var(--text-muted);
    font-size: 16px;
    margin-bottom: 15px;
}

.hero-sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.small-card h4 {
    font-size: 16px;
    margin: 8px 0;
    color: var(--dark-color);
}

.tag {
    display: inline-block;
    background: var(--dark-color);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 3px;
    text-transform: uppercase;
}

.tag.red {
    background: var(--primary-color);
}

.date {
    font-size: 12px;
    color: var(--text-muted);
}

/* Grid Section */
.news-grid-section h3 {
    margin-bottom: 20px;
    font-size: 20px;
    border-left: 4px solid var(--primary-color);
    padding-left: 10px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.grid-item h4 {
    font-size: 15px;
    margin-bottom: 10px;
}

/* Footer */
.site-footer {
    background: var(--dark-color);
    color: #ffffff;
    text-align: center;
    padding: 20px 0;
    margin-top: 50px;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 900px) {
    .hero-section {
        grid-template-columns: 1fr;
    }
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    .main-nav {
        display: none;
    }
}