/* Article pages - light theme matching main site */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Poppins', sans-serif; background: #f8f9fa; color: #444; line-height: 1.8; }

.art-nav { background: #fff; padding: 16px 0; border-bottom: 1px solid #e8ecf1; position: sticky; top: 0; z-index: 100; box-shadow: 0 2px 10px rgba(0,0,0,0.04); }
.art-nav .container { max-width: 1100px; margin: 0 auto; padding: 0 20px; display: flex; justify-content: space-between; align-items: center; }
.art-nav a.logo { color: #333; font-size: 1.3rem; font-weight: 700; text-decoration: none; }
.art-nav a.logo span { color: #03a4ed; }
.art-nav a.back { color: #03a4ed; text-decoration: none; font-size: 0.9rem; font-weight: 500; }
.art-nav a.back:hover { text-decoration: underline; }

.art-hero { background: linear-gradient(135deg, #03a4ed, #0277bd); padding: 60px 0 50px; text-align: center; }
.art-hero h1 { color: #fff; font-size: 2rem; font-weight: 700; margin-bottom: 8px; }
.art-hero p { color: rgba(255,255,255,0.8); font-size: 0.95rem; }

.art-content { max-width: 800px; margin: -30px auto 0; padding: 40px 40px 50px; background: #fff; border-radius: 18px; box-shadow: 0 4px 20px rgba(0,0,0,0.06); position: relative; z-index: 10; margin-bottom: 40px; }

.art-section { margin-bottom: 32px; }
.art-section h2 { color: #03a4ed; font-size: 1.15rem; font-weight: 600; margin-bottom: 12px; padding-bottom: 8px; border-bottom: 2px solid #e3f2fd; }
.art-section h3 { color: #333; font-size: 1rem; font-weight: 600; margin: 16px 0 8px; }
.art-section p, .art-section li { font-size: 0.9rem; color: #555; margin-bottom: 8px; }
.art-section ul, .art-section ol { padding-left: 20px; }
.art-section li { margin-bottom: 6px; }
.art-section strong { color: #333; }
.art-section a { color: #03a4ed; }

.art-card { background: #f8f9fa; border: 1px solid #e8ecf1; border-radius: 12px; padding: 20px; margin-bottom: 14px; }
.art-card h3 { color: #333; font-size: 0.95rem; margin-bottom: 8px; }

.art-table { width: 100%; border-collapse: collapse; margin: 16px 0; border-radius: 12px; overflow: hidden; }
.art-table th { background: #03a4ed; color: #fff; padding: 12px 16px; text-align: left; font-size: 0.85rem; font-weight: 600; }
.art-table td { background: #fff; padding: 12px 16px; border-bottom: 1px solid #e8ecf1; font-size: 0.85rem; color: #555; }
.art-table tr:hover td { background: #f0f7ff; }

.art-highlight { background: #e3f2fd; border-left: 4px solid #03a4ed; border-radius: 0 10px 10px 0; padding: 16px 20px; margin: 16px 0; }
.art-highlight p { margin: 0; font-size: 0.88rem; color: #333; }

.art-cta { background: linear-gradient(135deg, #03a4ed, #0277bd); border-radius: 16px; padding: 36px; text-align: center; margin: 36px 0; }
.art-cta h3 { color: #fff; font-size: 1.2rem; margin-bottom: 8px; }
.art-cta p { color: rgba(255,255,255,0.9); font-size: 0.9rem; margin-bottom: 18px; }
.art-cta a { background: #fff; color: #0277bd; padding: 12px 36px; border-radius: 10px; text-decoration: none; font-weight: 700; font-size: 14px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.art-cta a:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.15); }

.art-tip { background: #fff3e0; border-left: 4px solid #ff9800; border-radius: 0 10px 10px 0; padding: 14px 18px; margin: 14px 0; }
.art-tip h3 { color: #e65100; font-size: 0.9rem; margin-bottom: 4px; }
.art-tip .tip-num { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; background: #03a4ed; color: #fff; border-radius: 50%; font-size: 0.8rem; font-weight: 700; margin-right: 8px; }

.art-footer { background: #fff; padding: 24px 0; text-align: center; border-top: 1px solid #e8ecf1; }
.art-footer p { font-size: 0.8rem; color: #999; margin: 0; }
.art-footer a { color: #03a4ed; text-decoration: none; }

@media (max-width: 768px) {
    .art-hero h1 { font-size: 1.4rem; }
    .art-content { margin: -20px 12px 30px; padding: 24px 20px 30px; border-radius: 14px; }
}