.bk-unit {
  --unit-ink: #17243a;
  --unit-muted: #68788f;
  --unit-line: #dfe7f1;
  --unit-soft: #f5f8fc;
  --unit-blue: #1769e0;
  --unit-blue-dark: #1056bf;
  color: var(--unit-ink);
  padding: 8px 0 56px;
}
.bk-unit, .bk-unit * { box-sizing: border-box; }
.bk-unit [hidden] { display: none !important; }
.bk-unit button, .bk-unit input, .bk-unit select { font-family: inherit; }
.bk-unit-back { display: inline-flex; align-items: center; margin: 0 0 18px; padding: 9px 14px; border: 1px solid var(--unit-line); border-radius: 999px; color: var(--unit-ink); background: #fff; font-size: 14px; font-weight: 700; line-height: 1; text-decoration: none; }
.bk-unit-back:hover { border-color: var(--unit-blue); color: var(--unit-blue); }
.bk-unit-hero { max-width: 760px; margin: 0 auto 28px; text-align: center; }
.bk-unit-hero__eyebrow { display: inline-block; margin-bottom: 12px; color: var(--unit-blue); font-size: 11px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.bk-unit-hero h1 { margin: 0; color: var(--unit-ink); font-size: clamp(30px, 5vw, 46px); font-weight: 800; letter-spacing: -.04em; line-height: 1.12; }
.bk-unit-hero p { margin: 14px auto 0; color: var(--unit-muted); font-size: 16px; line-height: 1.65; }
.bk-unit-panel { border: 1px solid var(--unit-line); border-radius: 20px; background: #fff; box-shadow: 0 18px 50px rgba(31, 54, 88, .08); padding: 22px; }
.bk-unit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.bk-unit-grid article { border: 1px solid var(--unit-line); border-radius: 16px; background: var(--unit-soft); padding: 16px; }
.bk-unit-grid h2 { margin: 0 0 4px; color: var(--unit-ink); font-size: 18px; letter-spacing: -.02em; }
.bk-unit label { display: block; margin: 12px 0 6px; color: var(--unit-ink); font-size: 14px; font-weight: 800; }
.bk-unit input, .bk-unit select { width: 100%; min-height: 46px; border: 1px solid var(--unit-line); border-radius: 12px; color: var(--unit-ink); background: #fff; font-size: 16px; outline: none; padding: 0 14px; }
.bk-unit select { max-width: 360px; margin-top: 6px; }
.bk-unit input:focus, .bk-unit select:focus { border-color: var(--unit-blue); box-shadow: 0 0 0 4px rgba(23, 105, 224, .12); }
.bk-unit-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.bk-unit-quiet { min-height: 42px; padding: 0 14px; border: 1px solid var(--unit-line); border-radius: 12px; color: var(--unit-ink); background: var(--unit-soft); cursor: pointer; font-size: 14px; font-weight: 800; }
.bk-unit-quiet:hover { border-color: var(--unit-blue); color: var(--unit-blue); }
.bk-unit-results { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 18px; }
.bk-unit-metric { border: 1px solid var(--unit-line); border-radius: 16px; background: #fff; padding: 14px; }
.bk-unit-metric.is-good { background: #f3fbf6; border-color: #b7e4c7; }
.bk-unit-metric.is-warn { background: #fff8ee; border-color: #f3d7a1; }
.bk-unit-metric.is-bad { background: #fff5f5; border-color: #f3c2c2; }
.bk-unit-metric__value { margin: 0; color: var(--unit-ink); font-size: 22px; font-weight: 800; letter-spacing: -.03em; line-height: 1.2; }
.bk-unit-metric h3 { margin: 8px 0 0; color: var(--unit-ink); font-size: 14px; }
.bk-unit-metric p { margin: 4px 0 0; color: var(--unit-muted); font-size: 13px; line-height: 1.4; }
.bk-unit-error { margin: 14px 0 0; padding: 12px 14px; border-radius: 12px; color: #8d2b2b; background: #fff1f1; font-size: 14px; line-height: 1.5; }
.bk-unit-note { margin: 16px 0 0; color: var(--unit-muted); font-size: 14px; line-height: 1.55; }
@media (max-width: 980px) {
  .bk-unit-results { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 800px) {
  .bk-unit-grid, .bk-unit-results { grid-template-columns: 1fr; }
  .bk-unit select, .bk-unit-quiet { width: 100%; max-width: none; }
}