.rgc-ob-card {
  --rgc-bg: #101d22; --rgc-text: #f4f7f5; --rgc-muted: #b8c7c6;
  --rgc-accent: #98efb6; --rgc-border: #ffffff24; --rgc-chip: #ffffff08;
  box-sizing: border-box; isolation: isolate; position: relative; overflow: hidden;
  width: 100%; max-width: 1040px; margin: 24px auto; padding: clamp(24px, 5vw, 48px);
  border: 1px solid var(--rgc-border); border-radius: 20px;
  background: radial-gradient(ellipse at 100% 0%, #3e7c5a28, transparent 58%), var(--rgc-bg);
  color: var(--rgc-text); font-family: inherit; box-shadow: 0 16px 48px #00000018;
  text-align: left; line-height: 1.65;
}
.rgc-ob-card *, .rgc-ob-card *::before, .rgc-ob-card *::after { box-sizing: border-box; }
.rgc-ob-card--light { --rgc-bg: #f7faf7; --rgc-text: #14251d; --rgc-muted: #485e54; --rgc-accent: #197443; --rgc-border: #173d2926; --rgc-chip: #174e2a08; }
.rgc-ob-card .rgc-ob-card__eyebrow { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; justify-content: space-between; color: var(--rgc-accent); font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.rgc-ob-card .rgc-ob-card__version { color: var(--rgc-muted); border: 1px solid var(--rgc-border); padding: 3px 10px; border-radius: 999px; letter-spacing: .03em; }
.rgc-ob-card .rgc-ob-card__title { margin: 16px 0 8px; padding: 0; color: var(--rgc-text); font: inherit; font-size: clamp(28px, 4vw, 42px); font-weight: 800; line-height: 1.15; letter-spacing: -.025em; }
.rgc-ob-card .rgc-ob-card__lead { margin: 0 0 16px; color: var(--rgc-accent); font-size: clamp(17px, 2vw, 21px); font-weight: 600; }
.rgc-ob-card .rgc-ob-card__description { max-width: 72ch; margin: 0 0 22px; color: var(--rgc-muted); font-size: 16px; }
.rgc-ob-card .rgc-ob-card__features { display: flex; flex-wrap: wrap; list-style: none; gap: 8px; margin: 0 0 26px; padding: 0; }
.rgc-ob-card .rgc-ob-card__features li { margin: 0; padding: 5px 12px; border: 1px solid var(--rgc-border); border-radius: 8px; background: var(--rgc-chip); color: var(--rgc-text); font-size: 13px; }
.rgc-ob-card .rgc-ob-card__actions { display: flex; align-items: stretch; flex-wrap: wrap; gap: 10px; }
.rgc-ob-card a.rgc-ob-card__button { display: inline-flex; gap: 14px; align-items: center; justify-content: center; min-height: 48px; margin: 0; padding: 11px 20px; border: 1px solid var(--rgc-border); border-radius: 9px; font: inherit; font-size: 15px; font-weight: 750; text-decoration: none; line-height: 1.4; transition: filter .15s ease; }
.rgc-ob-card a.rgc-ob-card__button--primary, .rgc-ob-card a.rgc-ob-card__button--primary:visited { color: #102018; background: #98efb6; border-color: #98efb6; }
.rgc-ob-card a.rgc-ob-card__button--secondary, .rgc-ob-card a.rgc-ob-card__button--secondary:visited { color: var(--rgc-text); background: transparent; }
.rgc-ob-card a.rgc-ob-card__button:hover { filter: brightness(1.08); text-decoration: none; }
.rgc-ob-card a:focus-visible, .rgc-ob-card summary:focus-visible { outline: 3px solid var(--rgc-accent); outline-offset: 4px; }
.rgc-ob-card .rgc-ob-card__requirements, .rgc-ob-card .rgc-ob-card__includes { margin: 12px 0 0; color: var(--rgc-muted); font-size: 12px; line-height: 1.6; }
.rgc-ob-card .rgc-ob-card__includes { margin-top: 2px; }
.rgc-ob-card .rgc-ob-card__steps { margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--rgc-border); color: var(--rgc-muted); font-size: 14px; }
.rgc-ob-card .rgc-ob-card__steps summary { cursor: pointer; color: var(--rgc-text); font-weight: 650; }
.rgc-ob-card .rgc-ob-card__steps ol { margin: 16px 0 0; padding-left: 22px; }
.rgc-ob-card .rgc-ob-card__steps li { margin-bottom: 9px; }
.rgc-ob-card .rgc-ob-card__steps a { color: var(--rgc-accent); text-decoration: underline; }
.rgc-ob-card .rgc-ob-card__steps code { color: var(--rgc-text); background: var(--rgc-chip); border: 1px solid var(--rgc-border); border-radius: 3px; padding: 1px 4px; }
.rgc-ob-card .rgc-ob-card__sr { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@media (max-width: 520px) { .rgc-ob-card .rgc-ob-card__actions { flex-direction: column; } .rgc-ob-card a.rgc-ob-card__button { width: 100%; } }
@media (prefers-reduced-motion: reduce) { .rgc-ob-card a.rgc-ob-card__button { transition: none; } }