:root{
  --skf-primary:#635BFF;
  --skf-primary-dark:#4F46E5;
  --skf-success:#16845B;
  --skf-warning:#B7791F;
  --skf-danger:#B42318;
  --skf-surface:#FFFFFF;
  --skf-soft:#F7F7FC;
  --skf-text:#182230;
  --skf-muted:#667085;
  --skf-border:#E4E7EC;
  --skf-shadow:0 14px 40px rgba(16,24,40,.08);
  --skf-radius:20px;
}
.skf-app{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--skf-text);line-height:1.55}
.skf-app *{box-sizing:border-box}
.skf-shell{max-width:1050px;margin:0 auto;padding:24px}
.skf-header{text-align:center;max-width:760px;margin:0 auto 28px}
.skf-kicker{display:inline-block;font-size:13px;font-weight:800;text-transform:uppercase;letter-spacing:.04em;color:var(--skf-primary);margin-bottom:8px}
.skf-header h2{font-size:clamp(30px,5vw,44px);line-height:1.15;margin:0 0 12px}
.skf-header p{font-size:17px;color:var(--skf-muted);margin:0}
.skf-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:18px;align-items:start}
.skf-card,.skf-result-card{background:var(--skf-surface);border:1px solid var(--skf-border);border-radius:var(--skf-radius);box-shadow:var(--skf-shadow);padding:24px}
.skf-card h3{font-size:20px;margin:0 0 18px}
.skf-field{display:block}
.skf-field>span{display:block;font-weight:700;margin-bottom:7px}
.skf-field small{display:block;color:var(--skf-muted);margin-top:6px}
.skf-field textarea,.skf-field select{width:100%;border:1px solid var(--skf-border);border-radius:12px;background:#fff;color:var(--skf-text);font-size:16px;padding:12px 14px}
.skf-field select{min-height:48px;padding:0 14px}
.skf-divider{display:flex;align-items:center;gap:10px;color:var(--skf-muted);font-size:13px;margin:18px 0}
.skf-divider::before,.skf-divider::after{content:"";height:1px;background:var(--skf-border);flex:1}
.skf-builder{display:grid;grid-template-columns:1fr 1fr auto;gap:10px;align-items:end}
.skf-builder-btn{white-space:nowrap}
.skf-error{min-height:21px;color:var(--skf-danger);font-size:14px;margin:10px 0 0}
.skf-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.skf-btn{min-height:48px;border-radius:12px;padding:0 18px;font-size:16px;font-weight:800;cursor:pointer;border:1px solid transparent}
.skf-btn-primary{background:var(--skf-primary);color:#fff}
.skf-btn-primary:hover{background:var(--skf-primary-dark)}
.skf-btn-secondary{background:#fff;color:var(--skf-text);border-color:var(--skf-border)}
.skf-btn:focus-visible,.skf-text-btn:focus-visible,.skf-field select:focus-visible,.skf-field textarea:focus-visible{outline:3px solid rgba(99,91,255,.28);outline-offset:2px}
.skf-input-tip{background:var(--skf-soft);border-radius:14px;padding:14px;margin-top:16px}
.skf-input-tip p{margin:5px 0 0;color:var(--skf-muted);font-size:14px}
.skf-result-card{text-align:center;background:linear-gradient(180deg,#fff 0%,#FAFAFF 100%)}
.skf-result-label,.skf-mini-label{display:block;font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.04em;color:var(--skf-muted)}
.skf-key{display:block;font-size:clamp(40px,6vw,64px);line-height:1.05;color:var(--skf-primary);margin:8px 0}
.skf-score-pill{display:inline-block;padding:6px 12px;border-radius:999px;background:#ECEBFF;color:var(--skf-primary);font-weight:800}
.skf-explanation{max-width:620px;margin:14px auto 18px;color:var(--skf-muted)}
.skf-metrics{display:grid;grid-template-columns:1fr 1fr;gap:10px;text-align:left}
.skf-metrics>div{background:var(--skf-soft);border:1px solid var(--skf-border);border-radius:14px;padding:14px}
.skf-metrics span{display:block;color:var(--skf-muted);font-size:12px;margin-bottom:4px}
.skf-analysis-block{margin-top:16px;text-align:left}
.skf-analysis-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:16px;text-align:left}
.skf-roman{font-size:20px;font-weight:800;margin-top:7px;padding:12px 14px;background:var(--skf-soft);border:1px solid var(--skf-border);border-radius:12px}
.skf-chip-wrap{display:flex;gap:7px;flex-wrap:wrap;margin-top:8px}
.skf-chip{display:inline-flex;align-items:center;min-height:34px;padding:0 10px;border-radius:999px;background:#EEF0F4;color:var(--skf-text);font-size:13px;font-weight:700}
.skf-chip.is-good{background:#DFF5EB;color:var(--skf-success)}
.skf-chip.is-warn{background:#FFF0D5;color:var(--skf-warning)}
.skf-alt-list{display:grid;gap:8px;margin-top:8px}
.skf-alt-row{display:flex;justify-content:space-between;gap:12px;border:1px solid var(--skf-border);border-radius:12px;padding:10px 12px;background:var(--skf-soft)}
.skf-alt-row span{color:var(--skf-muted)}
.skf-caution{text-align:left;color:var(--skf-muted);font-size:13px;margin:14px 0 0}
.skf-history-card{margin-top:18px;box-shadow:none}
.skf-history-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px}
.skf-history-head h3{margin-bottom:2px}
.skf-history-head p{margin:0;color:var(--skf-muted);font-size:13px}
.skf-text-btn{border:0;background:transparent;color:var(--skf-primary);font-weight:800;cursor:pointer;padding:8px}
.skf-history-list{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:14px}
.skf-history-item{border:1px solid var(--skf-border);background:var(--skf-soft);border-radius:12px;padding:11px}
.skf-history-item strong{display:block;font-size:16px}
.skf-history-item span{display:block;color:var(--skf-muted);font-size:12px;margin-top:2px}
.skf-note-card{margin-top:18px;background:#FFF8E8;border:1px solid #F5D998;border-radius:14px;padding:16px 18px}
.skf-note-card p{margin:5px 0 0;color:#72530D}
.skf-sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
[hidden]{display:none!important}
@media(max-width:840px){
  .skf-shell{padding:16px}
  .skf-layout{grid-template-columns:1fr}
}
@media(max-width:620px){
  .skf-card,.skf-result-card{padding:18px}
  .skf-builder{grid-template-columns:1fr}
  .skf-metrics,.skf-analysis-grid,.skf-history-list{grid-template-columns:1fr}
  .skf-actions{flex-direction:column}
  .skf-btn{width:100%}
  .skf-history-head{flex-direction:column}
}