:root{--color-navy: #12304a;--color-navy-dark: #0c2135;--color-background: #f5f7f8;--color-surface: #ffffff;--color-surface-accent: #eef5fa;--color-border: #cad4dc;--color-text: #17212b;--color-text-muted: #596773;--color-on-navy: #ffffff;--color-on-navy-muted: #b7c6d4;--color-primary: #1769aa;--color-primary-dark: #12507f;--color-success: #16834b;--color-success-surface: #e8f5ee;--color-danger: #c9343b;--color-danger-surface: #fbeaeb;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-6: 24px;--space-8: 32px;--space-12: 48px;--space-16: 64px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--shadow-sm: 0 1px 2px rgb(18 48 74 / .06);--shadow-md: 0 8px 24px rgb(18 48 74 / .08);--container-max-width: 1200px;--content-max-width: 860px;--font-heading: "Titillium Web", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;--font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}*,*:before,*:after{box-sizing:border-box}body{margin:0;background:var(--color-background);color:var(--color-text);font-family:var(--font-sans);line-height:1.55}button,input,select,textarea{font:inherit}h1,h2,h3,h4{font-family:var(--font-heading);font-weight:700;color:var(--color-navy);line-height:1.2}h1{font-size:clamp(1.75rem,1.5rem + 1vw,2.375rem)}h2{font-size:1.375rem}:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px}.page-container{max-width:var(--content-max-width);margin:0 auto;padding:var(--space-8) var(--space-6)}.lead{color:var(--color-text-muted);margin-top:0;font-size:1.0625rem}.eyebrow{display:inline-flex;align-items:center;gap:var(--space-2);color:var(--color-primary);font-weight:600;font-size:.8125rem;text-transform:uppercase;letter-spacing:.06em;margin:0 0 var(--space-2)}.panel{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}form{display:flex;flex-direction:column;gap:var(--space-6);max-width:640px;margin-top:var(--space-8)}.field{display:flex;flex-direction:column;gap:var(--space-2);position:relative;border:none;padding:0;margin:0}label,legend{font-weight:600;font-size:.9375rem;color:var(--color-navy)}input[type=text],input[type=date]{border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:var(--space-3);background:var(--color-surface);color:var(--color-text);font-size:.9375rem}input[type=text]:focus-visible,input[type=date]:focus-visible{border-color:var(--color-primary)}.field-error{color:var(--color-danger);font-size:.875rem;margin:0}.field-hint{color:var(--color-text-muted);font-size:.8125rem;margin:0}.form-error{display:flex;align-items:center;gap:var(--space-2);color:var(--color-danger);background:var(--color-danger-surface);border:1px solid rgba(201,52,59,.25);border-radius:var(--radius-sm);padding:var(--space-3) var(--space-4);margin:0;font-size:.9375rem}button[type=submit]{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);align-self:flex-start;background:var(--color-primary);color:#fff;border:none;border-radius:var(--radius-sm);padding:var(--space-3) var(--space-6);font-weight:600;font-size:.9375rem;cursor:pointer;transition:background-color .15s ease,transform .05s ease}button[type=submit]:hover:not(:disabled){background:var(--color-primary-dark)}button[type=submit]:active:not(:disabled){transform:translateY(1px)}button[type=submit]:disabled{opacity:.75;cursor:not-allowed}.spinner{width:16px;height:16px;border-radius:50%;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;animation:spin .7s linear infinite;flex-shrink:0}@keyframes spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.spinner{animation-duration:1.4s}}.result{margin-top:var(--space-12);padding-top:var(--space-8);border-top:1px solid var(--color-border)}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.status-result{display:flex;align-items:flex-start;gap:var(--space-3);margin-top:var(--space-8);padding:var(--space-4) var(--space-5);border-radius:var(--radius-md);border:1px solid}.status-result h2{font-size:1.0625rem;margin:0 0 var(--space-1)}.status-result p{margin:0;color:var(--color-text-muted)}.status-result.is-valid{background:var(--color-success-surface);border-color:#16834b4d}.status-result.is-valid app-icon{color:var(--color-success)}.status-result.is-valid h2{color:var(--color-success)}.status-result.is-invalid{background:var(--color-danger-surface);border-color:#c9343b4d}.status-result.is-invalid app-icon{color:var(--color-danger)}.status-result.is-invalid h2{color:var(--color-danger)}.copy-confirmation{color:var(--color-success);font-size:.875rem}