*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}:root{--primary:#48c9b0;--primary-dark:#3ba890;--primary-light:#e8f8f5;--text:#2c3e50;--text-light:#5d6d7e;--bg:#ffffff;--bg-alt:#f8f9fa;--border:#dee2e6;--error:#e74c3c;--warning:#f39c12;--success:#27ae60;--shadow:0 2px 8px rgba(0,0,0,0.1);--shadow-lg:0 4px 16px rgba(0,0,0,0.15);--radius:8px;--transition:all 0.3s ease;--font-primary:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;--max-width:1200px}html{font-size:16px;scroll-behavior:smooth}body{font-family:var(--font-primary);color:var(--text);background:var(--bg);line-height:1.6;overflow-x:hidden}img{max-width:100%;height:auto;display:block}a{color:var(--primary);text-decoration:none;transition:var(--transition)}a:hover{color:var(--primary-dark)}button,input,select,textarea{font-family:inherit;font-size:inherit}button{cursor:pointer;border:none;transition:var(--transition)}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 20px}header{background:var(--bg);box-shadow:var(--shadow);position:sticky;top:0;z-index:1000;border-bottom:3px solid var(--primary)}.header-content{display:flex;justify-content:space-between;align-items:center;padding:1rem 0;flex-wrap:wrap}.logo{font-size:1.5rem;font-weight:700;color:var(--primary);display:flex;align-items:center;gap:0.5rem}.logo-icon{font-size:1.8rem}nav ul{display:flex;list-style:none;gap:1.5rem;flex-wrap:wrap}nav a{color:var(--text);font-weight:500;padding:0.5rem 0;position:relative}nav a:hover,nav a.active{color:var(--primary)}nav a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--primary);transition:width 0.3s ease}nav a:hover::after,nav a.active::after{width:100%}.hero{background:linear-gradient(135deg,var(--primary-light) 0%,var(--bg) 100%);padding:3rem 0;text-align:center}.hero-content{max-width:800px;margin:0 auto}.hero h1{font-size:2.5rem;color:var(--text);margin-bottom:1rem;line-height:1.2}.hero-subtitle{font-size:1.25rem;color:var(--text-light);margin-bottom:2rem}.hero-image{width:100%;max-width:600px;margin:2rem auto;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg)}.cta-group{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-top:2rem}.btn{padding:0.875rem 2rem;border-radius:var(--radius);font-weight:600;font-size:1rem;display:inline-block;text-align:center;transition:var(--transition);border:2px solid transparent}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}.btn-outline:hover{background:var(--primary);color:#fff}.btn-lg{padding:1rem 2.5rem;font-size:1.125rem}.content-section{padding:3rem 0}.section-title{font-size:2rem;color:var(--text);margin-bottom:1rem;text-align:center}.section-subtitle{font-size:1.125rem;color:var(--text-light);text-align:center;max-width:700px;margin:0 auto 2.5rem}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;margin:2rem 0}.card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;box-shadow:var(--shadow);transition:var(--transition);height:100%}.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}.card-icon{font-size:3rem;margin-bottom:1rem}.card h3{font-size:1.5rem;color:var(--text);margin-bottom:1rem}.card p{color:var(--text-light);margin-bottom:1.5rem}.disclaimer{background:var(--warning);color:#fff;padding:1.5rem;border-radius:var(--radius);margin:2rem 0;border-left:5px solid #d68910}.disclaimer-title{font-weight:700;font-size:1.125rem;margin-bottom:0.5rem;display:flex;align-items:center;gap:0.5rem}.disclaimer-title::before{content:'⚠️';font-size:1.5rem}.disclaimer p{margin:0.5rem 0;line-height:1.5}.tool-container{background:var(--bg-alt);border-radius:var(--radius);padding:2rem;margin:2rem 0;box-shadow:var(--shadow)}.tool-display{background:var(--bg);border:2px solid var(--primary);border-radius:var(--radius);padding:2rem;margin:1.5rem 0;text-align:center}.tool-display .stat{font-size:2.5rem;font-weight:700;color:var(--primary);margin:0.5rem 0}.tool-display .label{font-size:1rem;color:var(--text-light);text-transform:uppercase;letter-spacing:1px}.tool-controls{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-top:1.5rem}.tool-btn{padding:1rem 2rem;background:var(--primary);color:#fff;border-radius:var(--radius);font-size:1.125rem;font-weight:600;min-width:150px}.tool-btn:hover{background:var(--primary-dark)}.tool-btn:disabled{background:var(--border);cursor:not-allowed}.tool-btn-reset{background:var(--text-light)}.tool-btn-reset:hover{background:var(--text)}.input-group{margin:1.5rem 0}.input-group label{display:block;font-weight:600;color:var(--text);margin-bottom:0.5rem}.input-group input,.input-group select{width:100%;padding:0.875rem;border:1px solid var(--border);border-radius:var(--radius);font-size:1rem;transition:var(--transition)}.input-group input:focus,.input-group select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}.result-box{background:var(--primary-light);border-left:4px solid var(--primary);padding:1.5rem;border-radius:var(--radius);margin:1.5rem 0}.result-box h4{color:var(--primary-dark);font-size:1.25rem;margin-bottom:0.5rem}.faq-section{margin:3rem 0}.faq-item{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:1rem;overflow:hidden}.faq-question{padding:1.25rem;font-weight:600;color:var(--text);background:var(--bg-alt);cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:var(--transition)}.faq-question:hover{background:var(--primary-light)}.faq-question::after{content:'▼';font-size:0.875rem;transition:transform 0.3s ease}.faq-question.active::after{transform:rotate(180deg)}.faq-answer{padding:0 1.25rem;max-height:0;overflow:hidden;transition:all 0.3s ease}.faq-answer.active{padding:1.25rem;max-height:500px}.checklist{list-style:none;margin:1.5rem 0}.checklist-category{margin:2rem 0}.checklist-category h4{color:var(--primary);font-size:1.25rem;margin-bottom:1rem;padding-bottom:0.5rem;border-bottom:2px solid var(--primary-light)}.checklist-item{padding:0.75rem;margin:0.5rem 0;background:var(--bg-alt);border-radius:var(--radius);display:flex;align-items:center;gap:0.75rem;transition:var(--transition)}.checklist-item:hover{background:var(--primary-light)}.checklist-item input[type="checkbox"]{width:20px;height:20px;cursor:pointer;accent-color:var(--primary)}.checklist-item label{cursor:pointer;flex:1}footer{background:var(--text);color:#fff;padding:3rem 0 1rem;margin-top:4rem}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin-bottom:2rem}.footer-section h4{color:var(--primary);margin-bottom:1rem}.footer-section ul{list-style:none}.footer-section li{margin:0.5rem 0}.footer-section a{color:#ecf0f1}.footer-section a:hover{color:var(--primary)}.footer-disclaimer{background:var(--error);padding:1.5rem;border-radius:var(--radius);margin:2rem 0;text-align:center;font-weight:600}.footer-bottom{text-align:center;padding-top:2rem;border-top:1px solid rgba(255,255,255,0.1);color:#95a5a6}.authority-links{display:flex;gap:1.5rem;flex-wrap:wrap;justify-content:center;margin:2rem 0;padding:1.5rem;background:var(--primary-light);border-radius:var(--radius)}.authority-link{display:inline-flex;align-items:center;gap:0.5rem;padding:0.5rem 1rem;background:var(--bg);border-radius:var(--radius);font-weight:600;box-shadow:var(--shadow)}.authority-link:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.prose{max-width:800px;margin:2rem auto}.prose h2{font-size:1.875rem;color:var(--text);margin:2rem 0 1rem}.prose h3{font-size:1.5rem;color:var(--text);margin:1.5rem 0 0.75rem}.prose p{margin:1rem 0;line-height:1.8;color:var(--text-light)}.prose ul,.prose ol{margin:1rem 0 1rem 2rem;line-height:1.8}.prose li{margin:0.5rem 0}.prose strong{color:var(--text)}.highlight-box{background:var(--primary-light);border-left:4px solid var(--primary);padding:1.5rem;margin:1.5rem 0;border-radius:var(--radius)}.highlight-box h4{color:var(--primary-dark);margin-bottom:0.75rem}@media(max-width:768px){html{font-size:14px}.header-content{flex-direction:column;gap:1rem}nav ul{gap:1rem;justify-content:center}.hero h1{font-size:2rem}.hero-subtitle{font-size:1.125rem}.section-title{font-size:1.75rem}.card-grid{grid-template-columns:1fr;gap:1.5rem}.tool-controls{flex-direction:column}.tool-btn{width:100%}.footer-content{grid-template-columns:1fr}}.loading{display:inline-block;width:20px;height:20px;border:3px solid var(--primary-light);border-radius:50%;border-top-color:var(--primary);animation:spin 0.8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}