body { font-family: 'Roboto', sans-serif; margin: 0; padding: 0; color: #333; background: #fff; line-height: 1.6; overflow-x: hidden; }
header { background: linear-gradient(135deg, #0074D9, #ffffff); color: #fff; padding: 20px 15px; text-align: center; position: relative; }
header h1 { font-size: 2rem; margin: 0; font-weight: 500; letter-spacing: 1px; }
header p { margin: 10px 0 0; font-size: 1rem; opacity: 0.9; }
.split-layout { display: flex; flex-wrap: wrap; margin: 20px auto; max-width: 1200px; }
.left-panel, .right-panel { flex: 1; padding: 20px; box-sizing: border-box; transition: transform 0.3s ease; }
.left-panel { background: linear-gradient(to bottom right, #ffffff, #e8f6ff); border-radius: 8px; }
.right-panel { background: #ffffff; border-radius: 8px; }
@media (max-width: 768px) { .split-layout { flex-direction: column; } .left-panel, .right-panel { flex: none; width: 100%; } }
.matrix { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; margin: 20px auto; max-width: 1200px; }
.item { background: #e8f6ff; padding: 20px; text-align: center; border-radius: 8px; transition: transform 0.3s ease, box-shadow 0.3s ease; position: relative; }
.item:hover { transform: scale(1.05); box-shadow: 0 8px 15px rgba(0, 116, 217, 0.2); }
.item img { width: 100%; height: auto; border-radius: 8px; margin-bottom: 15px; }
article { padding: 20px; margin: 0 auto; max-width: 1200px; }
article h2, article h3 { color: #0074D9; margin-top: 30px; }
article p { margin: 15px 0; line-height: 1.8; }
pre { background: #f9f9f9; padding: 15px; border-radius: 5px; overflow-x: auto; font-size: 0.9rem; }
footer { background: #0074D9; color: #fff; text-align: center; padding: 15px; margin-top: 30px; font-size: 0.9rem; }
.tip { background: #fff3cd; color: #856404; padding: 10px; border-radius: 5px; margin: 20px auto; max-width: 1200px; text-align: center; }