.sponsor-brief {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(360px, 1.18fr);
  gap: 0;
  margin: 26px 0;
  border-top: 1px solid #161b18;
  border-bottom: 1px solid #161b18;
  background: #f4f5ef;
}

.sponsor-brief__intro,
.sponsor-brief__form-wrap { padding: 28px; }
.sponsor-brief__intro { border-right: 1px solid #cfd4ca; background: #e9eee2; }
.sponsor-brief__eyebrow { display: block; color: #536a25; font: 800 10px/1.25 var(--mono, monospace); letter-spacing: .08em; }
.sponsor-brief h2 { max-width: 17ch; margin: 14px 0 12px; color: #111813; font-size: clamp(25px, 3vw, 39px); line-height: 1.05; }
.sponsor-brief p { max-width: 58ch; margin: 0; color: #485148; line-height: 1.65; }
.sponsor-brief__form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.sponsor-brief__field { display: grid; gap: 7px; color: #263026; font: 800 10px/1.25 var(--mono, monospace); letter-spacing: .06em; }
.sponsor-brief select { width: 100%; min-height: 44px; border: 1px solid #aeb6aa; border-radius: 0; background: #fff; color: #141a15; padding: 0 11px; font: 600 14px/1.2 var(--sans, Arial, sans-serif); }
.sponsor-brief select:focus-visible,
.sponsor-brief button:focus-visible,
.sponsor-brief a:focus-visible { outline: 3px solid #d59618; outline-offset: 3px; }
.sponsor-brief__actions { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 9px; margin-top: 4px; }
.sponsor-brief__actions button,
.sponsor-brief__email { min-height: 43px; border: 1px solid #172018; border-radius: 0; padding: 0 15px; background: #172018; color: #fff; font: 800 11px/1 var(--mono, monospace); letter-spacing: .04em; text-decoration: none; cursor: pointer; }
.sponsor-brief__actions button:not(.sponsor-brief__build),
.sponsor-brief__email { background: transparent; color: #172018; }
.sponsor-brief__actions button:disabled { opacity: .42; cursor: not-allowed; }
.sponsor-brief__email[aria-disabled="true"] { opacity: .42; pointer-events: none; }
.sponsor-brief__status { grid-column: 1 / -1; min-height: 20px; margin: 0; color: #536a25; font: 700 11px/1.45 var(--mono, monospace); }
.sponsor-brief__preview { grid-column: 1 / -1; overflow: auto; margin: 0; padding: 14px; border: 1px solid #cfd4ca; background: #fff; color: #263026; font: 600 12px/1.55 var(--mono, monospace); white-space: pre-wrap; }

@media (max-width: 760px) {
  .sponsor-brief { grid-template-columns: 1fr; }
  .sponsor-brief__intro { border-right: 0; border-bottom: 1px solid #cfd4ca; }
  .sponsor-brief__intro,
  .sponsor-brief__form-wrap { padding: 22px 18px; }
  .sponsor-brief__form { grid-template-columns: 1fr; }
}