body{font-family:'Inter',system-ui,sans-serif;font-size:1rem;color:#333;background:#f8f9fa}.container{max-width:1400px;padding:0 2rem}.site-header{border-top:4px solid #2c3e50;background:#fff;padding:2.5rem 2rem 2rem;margin-bottom:2rem;border-radius:0 0 6px 6px;box-shadow:0 1px 3px rgba(0,0,0,0.06)}.site-header h1{font-family:'Lora',Georgia,serif;font-size:2rem;font-weight:600;letter-spacing:-0.3px;color:#1a1a2e;margin-bottom:1rem}.site-header p{color:#555;line-height:1.7;margin-bottom:.75rem;max-width:780px}.site-header a{color:#2c3e50;text-decoration:underline}.download-links{font-size:.9rem;color:#777}.download-links a{color:#2c3e50}.input-section{max-width:680px;margin:0 auto 2rem}.input-label{display:block;font-size:.9rem;color:#555;margin-bottom:.4rem}.input-section .form-control{border-color:#ccc;border-radius:4px 0 0 4px;font-size:.95rem;height:calc(2.25rem + 2px)}.input-section .form-control:focus{border-color:#2c3e50;box-shadow:0 0 0 .15rem rgba(44,62,80,0.2)}.input-section .btn-primary{background-color:#2c3e50;border-color:#2c3e50;border-radius:0 4px 4px 0;font-weight:500;letter-spacing:.02em}.input-section .btn-primary:hover{background-color:#1a252f;border-color:#1a252f}.chart-card{background:#fff;border:1px solid #e0e0e0;border-radius:8px;box-shadow:0 1px 4px rgba(0,0,0,0.07);padding:1.25rem;margin-bottom:2rem}.svg-container{display:inline-block;position:relative;width:100%;padding-bottom:83.3%;vertical-align:top}.svg-content{display:inline-block;position:absolute;top:0;left:0}.axis text{fill:#444;font-family:'Inter',system-ui,sans-serif;font-size:.75rem}.axis-label{fill:#555;font-family:'Inter',system-ui,sans-serif;font-size:.8rem}.reference-line{stroke:#aaa;stroke-width:1px;stroke-dasharray:4 4}#tooltip{position:absolute;padding:.6em .9em;background:#fff;font-family:'Inter',system-ui,sans-serif;font-size:.85rem;line-height:1.5;border:1px solid #ddd;border-radius:4px;box-shadow:0 2px 8px rgba(0,0,0,0.12);pointer-events:none;opacity:0;transition:opacity .1s ease-out;z-index:10}.tooltip-bin{font-weight:600;color:#1a1a2e;margin-bottom:.2em}.tooltip-row{color:#555}.tooltip-row span{font-weight:600;color:#333}