:root{--color-bg:#f8fafc;--color-surface:#fff;--color-text:#1e293b;--color-muted:#64748b;--color-border:#e2e8f0;--color-danger:#dc2626;--color-danger-bg:#fef2f2;--color-ok:#16a34a;--color-ok-bg:#f0fdf4;--color-warn:#d97706;--color-warn-bg:#fffbeb;--color-info-bg:#eff6ff;--color-primary:#1e40af;--radius:8px}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--color-bg);color:var(--color-text);font-family:-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}.app{max-width:800px;margin:0 auto;padding:16px}.header{text-align:center;padding:24px 0 16px}.header h1{color:var(--color-primary);font-size:1.5rem;font-weight:700}.subtitle{color:var(--color-muted);font-size:.9rem}.banner{border-radius:var(--radius);margin:12px 0;padding:12px 16px;font-size:.95rem;line-height:1.6}.banner-danger{background:var(--color-danger-bg);border:1px solid var(--color-danger);color:var(--color-danger)}.banner-ok{background:var(--color-ok-bg);border:1px solid var(--color-ok);color:var(--color-ok)}.banner-warn{background:var(--color-warn-bg);border:1px solid var(--color-warn);color:var(--color-warn)}.banner-info{background:var(--color-info-bg);color:var(--color-primary);border:1px solid #93c5fd}.date-nav{flex-wrap:wrap;justify-content:center;align-items:center;gap:12px;margin:16px 0;display:flex}.date-display{flex-direction:column;align-items:center;gap:4px;display:flex}.date-input{border:1px solid var(--color-border);background:var(--color-surface);border-radius:4px;padding:4px 8px;font-size:.85rem}.date-label{color:var(--color-muted);text-transform:capitalize;font-size:.85rem}.btn{border:1px solid var(--color-border);border-radius:var(--radius);background:var(--color-surface);cursor:pointer;padding:8px 16px;font-size:.9rem;transition:background .15s}.btn:hover{background:var(--color-bg)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.btn-primary:hover{background:#1e3a8a}.chart-wrapper{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);margin:16px 0;padding:16px 8px}.table-wrapper{margin:16px 0;overflow-x:auto}.price-table{border-collapse:collapse;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);width:100%;font-size:.9rem;overflow:hidden}.price-table th{background:var(--color-bg);text-align:left;text-transform:uppercase;letter-spacing:.05em;color:var(--color-muted);border-bottom:2px solid var(--color-border);padding:10px 16px;font-size:.8rem;font-weight:600}.price-table td{border-bottom:1px solid var(--color-border);padding:8px 16px}.price-table tr:last-child td{border-bottom:none}.row-negative{background:var(--color-danger-bg)!important}.price-negative{color:var(--color-danger);font-weight:700}.price-positive{color:var(--color-text)}.no-data{text-align:center;color:var(--color-muted);padding:40px 16px}.no-data .btn{margin-top:12px}.source-info{text-align:center;color:var(--color-muted);margin:8px 0;font-size:.8rem}.ntfy-info{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);margin:24px 0;overflow:hidden}.ntfy-toggle{text-align:left;cursor:pointer;width:100%;color:var(--color-text);background:0 0;border:none;padding:12px 16px;font-size:.95rem;font-weight:500}.ntfy-content{padding:0 16px 16px}.ntfy-content ol{padding-left:20px}.ntfy-content li{margin-bottom:12px;line-height:1.6}.ntfy-content code{background:var(--color-bg);border-radius:4px;padding:2px 6px;font-size:.85rem}.ntfy-content a{color:var(--color-primary)}.footer{text-align:center;color:var(--color-muted);border-top:1px solid var(--color-border);margin-top:24px;padding:24px 0;font-size:.8rem}@media (width<=600px){.app{padding:8px}.header h1{font-size:1.2rem}.date-nav{gap:8px}.price-table{font-size:.8rem}.price-table th,.price-table td{padding:6px 10px}}