body { background-color: #f8f9fa; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; color: #333; padding-top: 80px; }
.navbar-brand { font-weight: bold; color: #003399 !important; font-size: 1.6em; }
.article-container { background: #fff; padding: 50px; border-radius: 15px; box-shadow: 0 4px 15px rgba(0,0,0,0.05); margin-bottom: 40px; }
.article-header { margin-bottom: 30px; border-bottom: 2px solid #f4f4f4; padding-bottom: 25px; }
.category-badge { background: #003399; color: white; padding: 6px 18px; border-radius: 20px; text-transform: uppercase; font-size: 0.85em; font-weight: bold; }
.article-title { font-size: 3.2em; font-weight: 800; color: #002344; margin-top: 20px; line-height: 1.1; }
.article-meta { color: #888; font-size: 1em; margin-top: 15px; }
.article-content { font-size: 1.2em; line-height: 1.9; color: #333; }
.article-content h2 { color: #002344; font-weight: 700; margin-top: 45px; margin-bottom: 20px; border-left: 5px solid #003399; padding-left: 15px; }
.article-content h3 { color: #003399; font-weight: 600; margin-top: 30px; }
.article-content img { width: 100%; border-radius: 12px; margin: 30px 0; box-shadow: 0 10px 20px rgba(0,0,0,0.1); }
.quote-box { background: #f0f4f8; border-left: 5px solid #003399; padding: 30px; margin: 40px 0; font-style: italic; font-size: 1.3em; color: #002344; border-radius: 0 15px 15px 0; }
.highlight-card { background: #fff9e6; border: 1px solid #ffeeba; padding: 20px; border-radius: 10px; margin: 20px 0; }
.sidebar-card { background: #003399; color: white; padding: 30px; border-radius: 15px; text-align: center; }
.btn-cta-sidebar { background: #fff; color: #003399; font-weight: bold; border: none; padding: 15px 25px; border-radius: 5px; margin-top: 20px; display: block; text-decoration: none; font-size: 1.1em; }
footer { background: #002344; color: white; padding: 60px 0; text-align: center; margin-top: 50px; }
.pro-tip { background: #fff9e6; border: 1px solid #ffeeba; padding: 25px; border-radius: 10px; margin: 25px 0; }
.pro-tip i { color: #f39c12; margin-right: 10px; }
.quote-box { background: #f0f4f8; border-radius: 15px; padding: 35px; margin: 40px 0; font-style: italic; font-size: 1.3em; text-align: center; color: #002344; }
/* Sidebar */
.sidebar-card { background: #003399; color: white; padding: 30px; border-radius: 15px; text-align: center; position: sticky; top: 100px; }
.btn-cta { background: #fff; color: #003399; font-weight: bold; padding: 15px 25px; border-radius: 5px; display: block; margin-top: 20px; text-decoration: none; font-size: 1.1em; }