:root {
    --primary-color: #0A2540;
    --accent-color: #E41B23;
    --text-color: #333333;
    --bg-light: #F8F9FA;
    --border-color: #E2E8F0;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', system-ui, sans-serif; color: var(--text-color); background-color: #FFFFFF; line-height: 1.6; }
header { background-color: var(--primary-color); padding: 1rem 5%; display: flex; justify-content: space-between; align-items: center; position: sticky; top: 0; z-index: 1000; }
.logo a { color: #FFF; font-size: 1.5rem; font-weight: bold; text-decoration: none; letter-spacing: 1px; }
.logo span { color: var(--accent-color); }
nav ul { display: flex; list-style: none; }
nav ul li { margin-left: 2rem; }
nav ul li a { color: #E2E8F0; text-decoration: none; font-weight: 500; transition: color 0.3s; padding-bottom: 5px; }
nav ul li a:hover, nav ul li a.active { color: #FFF; border-bottom: 2px solid var(--accent-color); }
.container { max-width: 1200px; margin: 0 auto; padding: 3rem 2rem; }
.page-title { font-size: 2.5rem; color: var(--primary-color); margin-bottom: 1rem; text-align: center; }
.page-subtitle { text-align: center; color: #666; margin-bottom: 3rem; font-size: 1.1rem; }
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(350px, 1fr)); gap: 2.5rem; }
.blog-card { background: #FFF; border-radius: 8px; overflow: hidden; box-shadow: 0 4px 15px rgba(0,0,0,0.05); transition: transform 0.3s; border: 1px solid var(--border-color); display: flex; flex-direction: column; }
.blog-card:hover { transform: translateY(-5px); }
.card-content { padding: 1.5rem; display: flex; flex-direction: column; flex-grow: 1; }
.meta-tag { font-size: 0.8rem; text-transform: uppercase; color: var(--accent-color); font-weight: 700; margin-bottom: 0.5rem; display: flex; justify-content: space-between; }
.meta-date { color: #888; }
.card-title { font-size: 1.3rem; color: var(--primary-color); margin-bottom: 0.75rem; }
.card-excerpt { color: #555; font-size: 0.95rem; margin-bottom: 1.5rem; flex-grow: 1; }
.read-more { color: var(--primary-color); text-decoration: none; font-weight: 600; }
.read-more:hover { color: var(--accent-color); }
.article-container { max-width: 800px; margin: 0 auto; padding: 3rem 1.5rem; }
.article-header { margin-bottom: 2rem; border-bottom: 2px solid var(--border-color); padding-bottom: 1.5rem; }
.article-meta { margin-top: 1rem; color: #666; font-style: italic; }
.article-body p { font-size: 1.1rem; margin-bottom: 1.5rem; color: #2D3748; }
.article-body h2 { color: var(--primary-color); margin: 2rem 0 1rem 0; }
.back-btn { display: inline-block; margin-bottom: 2rem; color: var(--primary-color); text-decoration: none; font-weight: 600; }
.lang-switch { background: rgba(255,255,255,0.1); padding: 5px 10px; border-radius: 4px; color: white; text-decoration: none; font-size: 0.9rem; margin-left: 1rem; }
.lang-switch:hover { background: var(--accent-color); }
footer { background-color: var(--primary-color); color: #FFF; text-align: center; padding: 2rem; margin-top: 4rem; font-size: 0.9rem; }