:root{--kf-bg: #f6f7f9;--kf-card: #ffffff;--kf-border: #d9dde2;--kf-accent: #b5121b;--kf-text: #1c2024;--kf-muted: #6b7280}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--kf-bg);color:var(--kf-text)}#app{max-width:760px;margin:0 auto;padding:2rem 1.25rem 4rem}.kf-head h1{margin:0 0 .25rem;font-size:1.6rem}.kf-sub{margin:0 0 1.5rem;color:var(--kf-muted)}.kf-picker{margin-bottom:1.5rem}.kf-picker label{display:block;font-weight:600;margin-bottom:.35rem}select{width:100%;padding:.55rem .6rem;border:1px solid var(--kf-border);border-radius:6px;background:var(--kf-card);font-size:1rem}.kf-config{display:block}.kf-result{background:var(--kf-card);border:1px solid var(--kf-border);border-left:4px solid var(--kf-accent);border-radius:8px;padding:1rem 1.1rem;margin-bottom:1.25rem}.kf-result-lbl{display:block;font-size:.8rem;color:var(--kf-muted);text-transform:uppercase;letter-spacing:.04em}.kf-result-val{font-size:1.35rem;font-weight:700;word-break:break-word}.kf-fields{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:.9rem}.kf-field{display:flex;flex-direction:column;gap:.3rem}.kf-field-lbl{font-size:.82rem;color:var(--kf-muted)}.kf-warns{margin-bottom:1rem}.kf-warn{background:#fff7ed;border:1px solid #fdba74;color:#9a3412;padding:.5rem .7rem;border-radius:6px;margin-bottom:.4rem;font-size:.9rem}.kf-loading,.kf-empty{color:var(--kf-muted)}.kf-error{color:var(--kf-accent);font-weight:600}