.rcm-bison {
  --bison-ivory: #f4f0e7;
  --bison-paper: #faf8f2;
  --bison-navy: #071d35;
  --bison-deep: #092744;
  --bison-gold: #a98743;
  --bison-tan: #c9b58a;
  --bison-line: rgba(7, 29, 53, .16);
  --bison-muted: #5f6b76;
  color: var(--bison-navy);
  background: var(--bison-paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

.rcm-bison *, .rcm-bison *::before, .rcm-bison *::after { box-sizing: border-box; }
.rcm-bison img { display: block; max-width: 100%; height: auto; }
.rcm-bison h1, .rcm-bison h2, .rcm-bison h3 { font-family: Georgia, "Times New Roman", serif; font-weight: 500; letter-spacing: -.025em; }
.rcm-bison a { color: inherit; }

.bison-crumbs {
  min-height: 42px; padding: 10px clamp(24px, 5vw, 76px); background: var(--bison-navy); color: #d9e0e8;
  display: flex; align-items: center; gap: 14px; font-size: 12px; overflow-x: auto; white-space: nowrap;
}
.bison-crumbs a:hover { color: white; }
.bison-crumbs strong { color: white; font-weight: 650; }

.bison-kicker, .bison-eyebrow { margin: 0 0 12px; color: var(--bison-gold); font-size: 11px; font-weight: 800; letter-spacing: .17em; text-transform: uppercase; }
.bison-section { padding: 82px clamp(24px, 5vw, 76px); }
.bison-section h2, .bison-prairie h2, .bison-dark h2 { margin: 0; font-size: clamp(34px, 3.3vw, 48px); line-height: 1.08; }
.bison-section-heading { display: grid; grid-template-columns: minmax(360px, 1.1fr) minmax(280px, .9fr); align-items: end; gap: 64px; margin-bottom: 38px; }
.bison-section-heading > p { color: var(--bison-muted); max-width: 580px; margin: 0 0 6px; }

.bison-hero {
  min-height: 560px; padding: 48px clamp(24px, 5vw, 76px) 24px; overflow: hidden;
  display: grid; grid-template-columns: 43% 57%; background: linear-gradient(103deg, var(--bison-ivory) 0 45%, #fbfaf6 45% 100%);
}
.bison-hero-copy { align-self: center; padding-bottom: 24px; position: relative; z-index: 2; }
.bison-hero h1 { font-size: clamp(60px, 6vw, 88px); line-height: .92; margin: 0 0 12px; }
.bison-years { margin: 0; color: var(--bison-gold); font: italic 24px Georgia, serif; }
.bison-lede { max-width: 600px; margin: 25px 0 0; font: 21px/1.55 Georgia, serif; }
.bison-facts { display: grid; grid-template-columns: repeat(4, minmax(92px, 1fr)); margin: 40px 0 0; max-width: 620px; }
.bison-facts div { padding: 0 18px; border-left: 1px solid var(--bison-line); }
.bison-facts div:first-child { padding-left: 0; border-left: 0; }
.bison-facts dt { color: var(--bison-gold); font: 700 18px Georgia, serif; }
.bison-facts dd { margin: 5px 0 0; font-size: 9px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.bison-hero-art { min-height: 485px; position: relative; }
.bison-hero-art::before, .bison-hero-art::after { content: ""; position: absolute; border: 1px solid rgba(169,135,67,.14); border-radius: 50%; inset: 8% 13%; }
.bison-hero-art::after { inset: 19% 23%; }
.bison-hero-art picture { position: absolute; }
.bison-hero-art img { width: 100%; filter: drop-shadow(0 18px 14px rgba(4,15,26,.2)); }
.bison-coin-left { width: min(34vw, 400px); left: 1%; top: 18%; z-index: 1; }
.bison-coin-right { width: min(40vw, 470px); right: 0; top: 1%; z-index: 2; }
.bison-hero-art > span { position: absolute; right: 2%; bottom: 4%; color: #747b82; font-size: 9px; letter-spacing: .12em; text-transform: uppercase; }
.bison-evidence { min-height: 84px; padding: 18px clamp(24px, 5vw, 76px); display: grid; grid-template-columns: 150px 1fr; align-items: center; gap: 24px; background: var(--bison-deep); color: #eef2f5; }
.bison-evidence strong { color: var(--bison-tan); font-size: 11px; letter-spacing: .13em; text-transform: uppercase; }
.bison-evidence p { margin: 0; color: #c3ced7; font-size: 13px; }

.bison-generation-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border: 1px solid var(--bison-line); border-right: 0; border-bottom: 0; }
.bison-generation-card { min-height: 380px; display: grid; grid-template-columns: 44% 56%; position: relative; background: #fff; border-right: 1px solid var(--bison-line); border-bottom: 1px solid var(--bison-line); overflow: hidden; }
.bison-generation-card > picture { min-height: 380px; padding: 18px; display: grid; place-items: center; background: #efebe1; }
.bison-generation-card:nth-child(3) > picture { background: var(--bison-deep); }
.bison-generation-card > picture img { width: 100%; filter: drop-shadow(0 12px 10px rgba(5,21,36,.22)); }
.bison-card-index { position: absolute; top: 20px; right: 22px; z-index: 2; color: var(--bison-gold); font: italic 27px Georgia, serif; }
.bison-card-copy { align-self: center; padding: 34px 32px; }
.bison-card-copy h3 { margin: 0 0 14px; font-size: 29px; line-height: 1.08; }
.bison-card-copy > p:not(.bison-eyebrow) { color: var(--bison-muted); font-size: 13px; }
.bison-card-copy .bison-artist { font-size: 11px; }
.bison-card-copy a { display: inline-block; margin-top: 12px; color: #886b31; font-size: 12px; font-weight: 750; text-decoration: none; border-bottom: 1px solid #bca26e; }

.bison-register { background: #fff; }
.bison-table-wrap { overflow-x: auto; border-top: 1px solid var(--bison-navy); }
.bison-table-wrap:focus-visible { outline: 3px solid var(--bison-gold); outline-offset: 3px; }
.bison-register table { width: 100%; min-width: 900px; border-collapse: collapse; font-size: 13px; }
.bison-register th, .bison-register td { padding: 14px 12px; text-align: left; border-bottom: 1px solid var(--bison-line); vertical-align: top; }
.bison-register thead th { color: #71808d; font-size: 9px; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
.bison-register tbody th { font: 500 20px Georgia, serif; }
.bison-gen-chip { display: inline-block; min-width: 28px; color: var(--bison-gold); font-size: 9px; font-weight: 800; letter-spacing: .1em; }

.bison-prairie { padding: 86px clamp(24px, 5vw, 76px); background: linear-gradient(118deg, #b9a476, #dbccb0); display: grid; grid-template-columns: .8fr 1.2fr; gap: 72px; }
.bison-prairie > div:first-child > p:last-child { max-width: 600px; font: 18px/1.6 Georgia, serif; }
.bison-nature-timeline { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid rgba(7,29,53,.35); }
.bison-nature-timeline article { padding: 24px 24px 0 0; position: relative; }
.bison-nature-timeline article::before { content: ""; position: absolute; top: -5px; width: 9px; height: 9px; border-radius: 50%; background: var(--bison-navy); }
.bison-nature-timeline span { color: #705d2c; font: italic 17px Georgia, serif; }
.bison-nature-timeline h3 { margin: 9px 0; font-size: 21px; }
.bison-nature-timeline p { margin: 0; color: #34404a; font-size: 12px; }

.bison-craft { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: clamp(40px, 7vw, 110px); }
.bison-craft > div:first-child img { width: min(100%, 520px); margin: auto; filter: drop-shadow(0 16px 14px rgba(4,15,26,.18)); }
.bison-craft > div:last-child > p:not(.bison-kicker) { color: var(--bison-muted); max-width: 650px; }
.bison-detail { width: 100%; max-height: 240px; margin-top: 28px; object-fit: cover; object-position: 50% 42%; border: 1px solid var(--bison-line); }

.bison-dark { padding: 82px clamp(24px, 5vw, 76px); display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 64px; background: var(--bison-deep); color: #eef3f6; }
.bison-dark > div:first-child > p:last-child, .bison-dark > div:last-child > p { color: #bdc8d1; }
.bison-obverse-pair { min-height: 430px; position: relative; }
.bison-obverse-pair picture { position: absolute; width: 57%; }
.bison-obverse-pair picture:first-child { left: 0; top: 12%; z-index: 1; }
.bison-obverse-pair picture:last-child { right: 0; top: 0; z-index: 2; }
.bison-obverse-pair img { filter: drop-shadow(0 18px 15px rgba(0,0,0,.36)); }

.bison-specs { display: grid; grid-template-columns: 1.4fr .6fr; gap: 70px; align-items: end; }
.bison-specs dl, .bison-deep-spec dl { margin: 36px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--bison-line); border-left: 1px solid var(--bison-line); }
.bison-specs dl div, .bison-deep-spec dl div { padding: 20px; border-right: 1px solid var(--bison-line); border-bottom: 1px solid var(--bison-line); }
.bison-specs dt, .bison-deep-spec dt { color: var(--bison-gold); font-size: 9px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.bison-specs dd, .bison-deep-spec dd { margin: 5px 0 0; font: 18px Georgia, serif; }
.bison-specs aside { padding: 28px; border: 1px solid var(--bison-line); color: var(--bison-muted); font-size: 13px; }
.bison-sources { background: #eee9dd; display: grid; grid-template-columns: .65fr 1.35fr; gap: 70px; }
.bison-sources > .bison-kicker { grid-column: 1; }
.bison-sources h2 { grid-column: 1; }
.bison-sources > p { grid-column: 1; color: var(--bison-muted); }
.bison-sources ol { grid-column: 2; grid-row: 1 / span 3; margin: 0; padding-left: 24px; columns: 2; column-gap: 46px; }
.bison-sources li { margin: 0 0 14px; break-inside: avoid; font-size: 12px; }
.bison-sources a { text-decoration-color: var(--bison-gold); text-underline-offset: 3px; }

.bison-deep-hero { min-height: 620px; padding: 54px clamp(24px, 5vw, 76px); display: grid; grid-template-columns: 42% 58%; align-items: center; gap: 38px; overflow: hidden; background: linear-gradient(106deg, var(--bison-ivory) 0 44%, #fbfaf7 44% 100%); }
.bison-back { display: inline-block; margin-bottom: 40px; color: #82672f; font-size: 12px; font-weight: 700; text-decoration: none; }
.bison-deep-hero h1 { margin: 0; font-size: clamp(50px, 5.4vw, 78px); line-height: .96; }
.bison-deep-facts { margin: 34px 0 0; display: grid; gap: 0; }
.bison-deep-facts div { padding: 12px 0; border-top: 1px solid var(--bison-line); }
.bison-deep-facts dt { color: var(--bison-gold); font-size: 9px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.bison-deep-facts dd { margin: 4px 0 0; font-size: 13px; }
.bison-face-pair { min-height: 520px; position: relative; }
.bison-face-pair picture { position: absolute; width: 49%; }
.bison-face-pair picture:first-child { left: 0; top: 12%; z-index: 1; }
.bison-face-pair picture:nth-child(2) { right: 0; top: 2%; z-index: 2; }
.bison-face-pair img { filter: drop-shadow(0 18px 15px rgba(4,15,26,.22)); }
.bison-face-pair p { position: absolute; bottom: 0; right: 3%; margin: 0; color: #747b82; font-size: 9px; letter-spacing: .08em; text-transform: uppercase; }
.bison-deep-reading { display: grid; grid-template-columns: 1.2fr .8fr; gap: 80px; }
.bison-deep-reading p { max-width: 770px; color: var(--bison-muted); font-size: 16px; }
.bison-deep-reading aside { padding: 30px; background: #eee9dd; }
.bison-deep-reading aside h2 { font-size: 32px; }
.bison-deep-reading aside p { font-size: 13px; }
.bison-deep-spec { align-items: start; }
.bison-deep-spec dl { grid-template-columns: repeat(2, 1fr); border-color: rgba(255,255,255,.18); }
.bison-deep-spec dl div { border-color: rgba(255,255,255,.18); }
.bison-deep-context { display: grid; gap: 0; border-top: 1px solid rgba(255,255,255,.18); }
.bison-deep-context article { padding: 20px 0; border-bottom: 1px solid rgba(255,255,255,.18); }
.bison-deep-context article > p:last-child { margin: 0; color: #bdc8d1; font-size: 13px; }
.bison-generation-nav { padding: 32px clamp(24px, 5vw, 76px); display: grid; grid-template-columns: 1fr 1fr; gap: 30px; border-bottom: 1px solid var(--bison-line); background: #fff; }
.bison-generation-nav a { padding: 20px 0; text-decoration: none; border-top: 1px solid var(--bison-line); }
.bison-generation-nav a:last-child { text-align: right; }
.bison-generation-nav span { display: block; margin-bottom: 6px; color: var(--bison-gold); font-size: 9px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.bison-generation-nav strong { font: 21px Georgia, serif; }

@media (max-width: 1050px) {
  .bison-hero, .bison-deep-hero { grid-template-columns: 45% 55%; }
  .bison-generation-grid { grid-template-columns: 1fr; }
  .bison-prairie, .bison-dark { grid-template-columns: 1fr; }
  .bison-sources { grid-template-columns: 1fr; gap: 14px; }
  .bison-sources > .bison-kicker, .bison-sources h2, .bison-sources > p, .bison-sources ol { grid-column: 1; grid-row: auto; }
  .bison-obverse-pair { max-width: 650px; width: 100%; margin: auto; }
}

@media (max-width: 900px) {
  body:has(.rcm-bison) .topbar { grid-template-columns: 1fr auto; padding: 10px 20px; }
  body:has(.rcm-bison) .topbar .brand { grid-column: 1; grid-row: 1; }
  body:has(.rcm-bison) .topbar .brand small,
  body:has(.rcm-bison) .topbar .main-nav,
  body:has(.rcm-bison) .topbar .account-strip { display: none; }
  body:has(.rcm-bison) .topbar .language-switcher { grid-column: 2; grid-row: 1; justify-content: flex-end; }
}

@media (max-width: 700px) {
  .bison-crumbs { min-height: 38px; padding: 9px 20px; gap: 8px; font-size: 10px; }
  .bison-section, .bison-prairie, .bison-dark { padding: 58px 20px; }
  .bison-section-heading { display: block; margin-bottom: 28px; }
  .bison-section-heading > p { margin-top: 14px; font-size: 13px; }
  .bison-hero { display: block; min-height: 0; padding: 36px 20px 12px; background: linear-gradient(180deg, var(--bison-ivory) 0 51%, #fbfaf6 51% 100%); }
  .bison-hero h1 { font-size: 59px; }
  .bison-lede { font-size: 18px; }
  .bison-facts { grid-template-columns: repeat(2, 1fr); margin-top: 28px; border-top: 1px solid var(--bison-line); }
  .bison-facts div, .bison-facts div:first-child { padding: 13px 9px; border-left: 0; border-bottom: 1px solid var(--bison-line); }
  .bison-facts div:nth-child(odd) { border-right: 1px solid var(--bison-line); }
  .bison-hero-art { min-height: 355px; margin-top: 14px; }
  .bison-coin-left { width: 245px; left: -45px; top: 48px; }
  .bison-coin-right { width: 268px; right: -46px; top: 4px; }
  .bison-hero-art > span { display: none; }
  .bison-evidence { grid-template-columns: 1fr; gap: 7px; padding: 18px 20px; }
  .bison-generation-card { display: block; min-height: 0; }
  .bison-generation-card > picture { min-height: 300px; padding: 26px; }
  .bison-card-copy { padding: 28px 24px 34px; }
  .bison-prairie { gap: 40px; }
  .bison-nature-timeline { display: block; border-top: 0; border-left: 1px solid rgba(7,29,53,.35); padding-left: 22px; }
  .bison-nature-timeline article { padding: 0 0 28px 17px; }
  .bison-nature-timeline article::before { top: 7px; left: -27px; }
  .bison-craft { grid-template-columns: 1fr; gap: 36px; }
  .bison-obverse-pair { min-height: 330px; }
  .bison-specs { grid-template-columns: 1fr; gap: 30px; }
  .bison-specs dl { grid-template-columns: repeat(2, 1fr); }
  .bison-sources ol { columns: 1; }
  .bison-deep-hero { display: block; min-height: 0; padding: 36px 20px 20px; background: linear-gradient(180deg, var(--bison-ivory) 0 53%, #fbfaf7 53% 100%); }
  .bison-back { margin-bottom: 26px; }
  .bison-deep-hero h1 { font-size: 48px; }
  .bison-face-pair { min-height: 350px; margin-top: 22px; }
  .bison-face-pair picture { width: 50%; }
  .bison-face-pair picture:first-child { left: 0; }
  .bison-face-pair picture:nth-child(2) { right: 0; }
  .bison-face-pair p { display: none; }
  .bison-deep-reading { grid-template-columns: 1fr; gap: 30px; }
  .bison-deep-spec dl { grid-template-columns: 1fr 1fr; }
  .bison-generation-nav { padding: 24px 20px; gap: 18px; }
  .bison-generation-nav strong { font-size: 16px; }
}