body { font-family: 'PingFang SC', sans-serif; margin: 0; padding: 0; background-color: #fff; color: #333; line-height: 1.6; overflow-x: hidden; }
.container { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 24px; padding: 20px; max-width: 1440px; margin: 0 auto; box-sizing: border-box; }
.header { background-color: #0D47A1; color: #fff; text-align: center; padding: 30px 20px; position: relative; }
.header h1 { font-size: 2rem; margin: 0; }
.header p { font-size: 1rem; margin-top: 10px; }
.card { background-color: #fff; border-radius: 12px; box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1); padding: 20px; transition: all 0.3s ease; position: relative; overflow: hidden; }
.card:hover { transform: scale(1.05); background-color: #f0f8ff; box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15); }
.card h3 { color: #0D47A1; font-size: 1.25rem; margin-bottom: 10px; }
.card p { font-size: 1rem; margin-bottom: 15px; }
.card .tag { background-color: #FF9800; color: #fff; padding: 5px 10px; border-radius: 20px; font-size: 0.875rem; display: inline-block; margin-bottom: 10px; }
.image-wrapper { width: 100%; height: 200px; overflow: hidden; border-radius: 12px; margin-bottom: 15px; position: relative; }
.image-wrapper img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.image-wrapper:hover img { transform: scale(1.1); }
.article { grid-column: span 2; background-color: #fff; border-radius: 12px; box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1); padding: 30px; }
.article h2 { color: #0D47A1; font-size: 1.75rem; margin-bottom: 20px; }
.article h3 { color: #0D47A1; font-size: 1.25rem; margin-top: 25px; margin-bottom: 15px; }
.article pre { background-color: #f5f5f5; padding: 15px; border-radius: 8px; overflow-x: auto; font-size: 0.875rem; }
.article code { color: #d40000; }
.footer { background-color: #0D47A1; color: #fff; text-align: center; padding: 20px; font-size: 0.875rem; }
@media (max-width: 768px) { .container { grid-template-columns: 1fr; } .article { grid-column: span 1; } }
@media (min-width: 769px) and (max-width: 1024px) { .container { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1025px) and (max-width: 1200px) { .container { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1201px) { .container { grid-template-columns: repeat(4, 1fr); } }