/* --- HKSEV Blue Theme --- */
        :root {
            --primary: #0060a9;
            --primary-dark: #00457a;
            --secondary: #e6f4ff;
            --highlight: #b3e5fc;
            --alert: #d32f2f;
            --warning: #f57f17;
            --whatsapp: #25D366;
            --text-main: #2c3e50;
            --bg-body: #f4f7f9;
            --bg-card: #ffffff;
            --radius: 12px;
            --shadow: 0 10px 30px rgba(0, 96, 169, 0.1);
        }

        body { font-family: 'Noto Sans TC', sans-serif; line-height: 1.8; color: var(--text-main); background: var(--bg-body); margin: 0; padding: 0; }
        h1, h2, h3 { color: var(--primary); font-weight: 700; margin-top: 0; }
        a { color: var(--primary); text-decoration: none; transition: 0.3s; }
        
        .page-wrapper { max-width: 900px; margin: 40px auto; background: var(--bg-card); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
        .content-container { padding: 40px 60px; }
        
        @media (max-width: 768px) {
            .page-wrapper { margin: 0; border-radius: 0; }
            .content-container { padding: 30px 20px; }
            .hero-btns { flex-direction: column; }
            .hero-btns .btn { width: 100%; box-sizing: border-box; }
        }

        /* --- Hero Header --- */
        .hero-section {
            background: linear-gradient(135deg, var(--primary) 0%, #0083cb 100%);
            color: white;
            padding: 50px 30px;
            text-align: center;
            position: relative;
        }
        .hero-section::after {
            content: ""; position: absolute; bottom: -20px; left: 0; width: 100%; height: 40px;
            background: var(--bg-card); border-radius: 50% 50% 0 0 / 100% 100% 0 0;
        }
        
        h1.article-title { 
            color: white; 
            font-size: 2rem; 
            margin-bottom: 20px; 
            text-shadow: 0 2px 5px rgba(0,0,0,0.1); 
            line-height: 1.4;
        }
        
        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-top: 25px;
            margin-bottom: 10px;
        }
        
        .hero-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            text-decoration: none;
            transition: transform 0.2s;
            box-shadow: 0 4px 10px rgba(0,0,0,0.2);
        }
        .hero-btn:hover { transform: translateY(-2px); }
        .btn-call-hero { background: white; color: var(--primary); }
        .btn-wa-hero { background: var(--whatsapp); color: white; }

        /* --- Fact/Myth Box --- */
        .fact-box {
            background: #fff8e1; border-left: 5px solid #ffb74d; padding: 20px 25px; margin: 30px 0; border-radius: 0 8px 8px 0;
        }
        .fact-title { color: #e65100; font-weight: bold; font-size: 1.15rem; display: block; margin-bottom: 8px; }

        /* --- Danger Grid (Kidney & Urinary) --- */
        .danger-grid {
            display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; margin-top: 20px;
        }
        .danger-card {
            background: #fff5f5; border: 1px solid #ffcdd2; padding: 25px; border-radius: 12px;
        }
        .danger-icon { font-size: 2.5rem; display: block; margin-bottom: 10px; }
        .danger-card h3 { color: #c62828; margin-top: 0; font-size: 1.2rem; }

        /* --- Tips Section --- */
        .tips-section {
            background: #263238; color: white; padding: 35px; border-radius: var(--radius); margin: 40px 0;
        }
        .tips-section h2 { color: #81d4fa; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 15px; margin-bottom: 25px; }
        
        .tip-item { display: flex; align-items: flex-start; gap: 15px; margin-bottom: 25px; }
        .tip-number { 
            background: var(--primary); color: white; width: 35px; height: 35px; border-radius: 50%; 
            display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0; font-size: 1.2rem;
        }
        .tip-content h4 { color: white; margin: 0 0 5px 0; font-size: 1.15rem; }
        .tip-content p { margin: 0; color: #cfd8dc; font-size: 0.95rem; }

        /* --- Self Check Box --- */
        .self-check {
            background: var(--secondary); padding: 25px; border-radius: 12px; border: 1px solid #bbdefb; margin: 30px 0;
        }
        .check-list { list-style: none; padding: 0; margin: 0; }
        .check-list li { position: relative; padding-left: 30px; margin-bottom: 15px; color: #444; font-size: 1.05rem; }
        .check-list li::before { content: "🔎"; position: absolute; left: 0; top: 0; }

        /* --- Medical Promo Box (SDMA) --- */
        .medical-promo {
            background: linear-gradient(to right, #ffffff, #f0f7f0); border: 2px solid #81c784; padding: 25px; border-radius: 12px; text-align: center;
        }

        /* --- FAQ --- */
        details { background: #fff; border: 1px solid #eee; border-radius: 8px; margin-bottom: 10px; padding: 15px; }
        summary { font-weight: 700; cursor: pointer; color: var(--primary); font-size: 1.05rem; }

        /* --- Footer --- */
        .article-footer {
            margin-top: 50px; padding-top: 20px; border-top: 1px solid #eee; text-align: center; color: #666; font-size: 0.9rem;
        }
        
        /* Mobile Sticky CTA */
        .sticky-cta-mobile {
            position: fixed; bottom: 0; left: 0; width: 100%;
            background: white; padding: 10px; box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
            display: flex; gap: 10px; z-index: 999;
            box-sizing: border-box;
        }
        @media(min-width: 769px) { .sticky-cta-mobile { display: none; } }
        .sticky-btn { flex: 1; text-align: center; padding: 12px; border-radius: 8px; font-weight: bold; font-size: 0.95rem; }