* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', Tahoma, sans-serif; line-height: 1.7; color: #1f2937; background: #f3f6fb; }
header { background: linear-gradient(135deg, #0e7490 0%, #155e75 100%); color: #fff; padding: 50px 20px; text-align: center; }
header h1 { font-size: 2.5rem; margin-bottom: 8px; }
header p { font-size: 1.05rem; opacity: 0.9; }
nav { background: #083344; padding: 12px; text-align: center; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
nav a { color: #fff; margin: 0 14px; text-decoration: none; font-weight: 500; font-size: 0.95rem; }
nav a:hover { color: #67e8f9; }
.container { max-width: 1200px; margin: 30px auto; padding: 0 20px; }
.hero { background: #fff; padding: 30px; border-radius: 10px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); margin-bottom: 30px; }
.hero h2 { color: #155e75; margin-bottom: 12px; }
h2.section-title { color: #155e75; margin: 30px 0 18px; }
.cat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.cat-card { background: #fff; padding: 22px; border-radius: 10px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); border-left: 4px solid #0e7490; transition: transform 0.2s; }
.cat-card:hover { transform: translateY(-3px); box-shadow: 0 6px 16px rgba(0,0,0,0.1); }
.cat-card h3 { color: #155e75; margin-bottom: 10px; font-size: 1.15rem; }
.cat-card ul { list-style: none; }
.cat-card li { padding: 6px 0; border-bottom: 1px solid #e5e7eb; }
.cat-card li:last-child { border: none; }
.cat-card a { color: #0e7490; text-decoration: none; font-weight: 500; }
.cat-card a:hover { text-decoration: underline; }
.posts-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.post-card { background: #fff; padding: 20px; border-radius: 10px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); transition: transform 0.2s; }
.post-card:hover { transform: translateY(-3px); }
.post-card .cat { display: inline-block; background: #cffafe; color: #155e75; padding: 3px 10px; border-radius: 12px; font-size: 0.78rem; font-weight: 600; margin-bottom: 10px; }
.post-card h3 { color: #155e75; margin-bottom: 10px; font-size: 1.1rem; }
.post-card p { color: #4b5563; font-size: 0.92rem; margin-bottom: 12px; }
.post-card a { color: #0e7490; text-decoration: none; font-weight: 600; font-size: 0.9rem; }
.post-card a:hover { text-decoration: underline; }
.post-content { background: #fff; padding: 35px; border-radius: 10px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.post-content h1 { color: #155e75; margin-bottom: 18px; line-height: 1.3; }
.post-content h2 { color: #155e75; margin: 22px 0 12px; padding-bottom: 6px; border-bottom: 2px solid #cffafe; }
.post-content h3 { color: #0e7490; margin: 16px 0 8px; }
.post-content p, .post-content li { margin-bottom: 10px; }
.post-content ul, .post-content ol { padding-left: 28px; margin-bottom: 14px; }
.post-content table { width: 100%; border-collapse: collapse; margin: 14px 0; }
.post-content th, .post-content td { border: 1px solid #d1d5db; padding: 8px 12px; text-align: left; }
.post-content th { background: #ecfeff; color: #155e75; }
.post-content blockquote { border-left: 4px solid #0e7490; padding: 12px 18px; background: #ecfeff; margin: 14px 0; font-style: italic; color: #155e75; border-radius: 4px; }
.post-content a { color: #0e7490; }
.post-meta { display: inline-block; background: #cffafe; color: #155e75; padding: 4px 12px; border-radius: 12px; font-size: 0.82rem; font-weight: 600; margin-bottom: 14px; }
.back-link { display: inline-block; margin-top: 25px; color: #0e7490; text-decoration: none; font-weight: 600; }
.back-link:hover { text-decoration: underline; }
.faq-item { background: #f9fafb; padding: 14px 18px; margin: 10px 0; border-radius: 8px; border-left: 3px solid #0e7490; }
.faq-item h3 { font-size: 1rem; margin-bottom: 6px; }
footer { background: #083344; color: #cbd5e1; padding: 30px 20px; text-align: center; margin-top: 40px; }
footer a { color: #67e8f9; text-decoration: none; margin: 0 6px; }
footer a:hover { text-decoration: underline; }
@media (max-width: 600px) { header h1 { font-size: 1.8rem; } nav a { margin: 0 6px; font-size: 0.85rem; } .post-content { padding: 22px; } }