:root{--accent: #0057a8;--accent-light: #dbeafe;--bg: #f1f5f9;--card: #ffffff;--text: #0f172a;--muted: #64748b;--border: #e2e8f0;--radius: 12px;--shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);--green: #16a34a;--red: #dc2626}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;font-size:14px;line-height:1.5}header{background:var(--accent);color:#fff;padding:1.25rem 2rem}header h1{font-size:1.2rem;font-weight:700;letter-spacing:-.01em}header p{font-size:.82rem;opacity:.8;margin-top:2px}header a{color:#fff}main{max-width:1280px;margin:0 auto;padding:2rem}#dropzone{background:var(--card);border:2px dashed var(--border);border-radius:var(--radius);padding:3.5rem 2rem;text-align:center;cursor:pointer;transition:border-color .15s,background .15s;outline:none}#dropzone:hover,#dropzone:focus{border-color:var(--accent)}#dropzone.drag-over{border-color:var(--accent);background:var(--accent-light)}.drop-icon{width:2.5rem;height:2.5rem;color:var(--muted);margin-bottom:.75rem}#dropzone h2{font-size:1rem;font-weight:600;color:var(--text)}#dropzone p{color:var(--muted);margin-top:.4rem}.browse-link{color:var(--accent);text-decoration:underline;cursor:pointer}.pilled{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);margin-top:1rem}.pilled>summary{padding:.8rem 1.25rem;cursor:pointer;font-size:.82rem;font-weight:600;color:var(--muted);display:flex;align-items:center;gap:.5rem;list-style:none;-webkit-user-select:none;user-select:none}.pilled>summary::-webkit-details-marker{display:none}.pilled>summary:before{content:"▶";font-size:.6rem;transition:transform .15s;flex-shrink:0}.pilled[open]>summary:before{transform:rotate(90deg)}.rate-links{margin-left:auto;display:flex;gap:.75rem;font-weight:400}.rate-links a{color:var(--accent);text-decoration:none;font-size:.8rem}.rate-links a:hover{text-decoration:underline}.rates-form{padding:0 1.25rem 1.25rem;display:grid;grid-template-columns:auto 1fr 2fr;gap:1rem}.rates-form fieldset{border:1px solid var(--border);border-radius:8px;padding:.6rem .85rem .75rem}.rates-form legend{font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);padding:0 .25rem}.rates-form label{display:flex;flex-direction:column;gap:.2rem;font-size:.78rem;color:var(--text);margin-top:.55rem}.rates-form input[type=number]{border:1px solid var(--border);border-radius:6px;padding:.3rem .5rem;font-size:.85rem;font-family:ui-monospace,monospace;color:var(--text);background:var(--bg);width:100%;outline:none}.rates-form input[type=number]:focus{border-color:var(--accent)}@media (max-width: 700px){.rates-form{grid-template-columns:1fr}}#error-banner{margin-top:1rem;background:#fef2f2;border:1px solid #fecaca;border-radius:8px;padding:.75rem 1rem;color:var(--red);font-size:.875rem}#results{margin-top:1.5rem}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:1rem;margin-bottom:1.5rem}.stat-card{background:var(--card);border-radius:var(--radius);padding:1.1rem 1.25rem;box-shadow:var(--shadow)}.stat-card .label{font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}.stat-card .value{font-size:1.6rem;font-weight:800;letter-spacing:-.02em;margin-top:.2rem;color:var(--text)}.stat-card .sub{font-size:.75rem;color:var(--muted);margin-top:.2rem}.stat-card.positive .value{color:var(--green)}.stat-card.negative .value{color:var(--red)}.charts-stack{display:grid;gap:1.25rem}.chart-card{background:var(--card);border-radius:var(--radius);padding:1.25rem 1.5rem;box-shadow:var(--shadow)}.chart-card h3{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:1rem}.chart-wrap{position:relative}.chart-wrap--tall{height:260px}.chart-wrap:not(.chart-wrap--tall){height:220px}.charts-row{display:grid;grid-template-columns:1fr 2fr;gap:1.25rem}@media (max-width: 700px){main{padding:1rem}.charts-row{grid-template-columns:1fr}}