/* SN87 shared system v1 (R10). One token set, one shell, one component set for Overview, Observatory, Testnet and Onboarding.
   Every surface carries a byte-identical copy of this sheet, guarded by a parity check. Fonts are declared per surface, never here.
   Everything is scoped by .sn87-* class names or the :root token block; no element selectors that could leak elsewhere. */
:root{
  --sn87-midnight:#060f1c;--sn87-navy:#0c1e38;--sn87-raise:#112a4a;--sn87-ivory:#f2ede0;--sn87-muted:#a9b7c6;--sn87-body:#c6d0dc;
  --sn87-gold:#c9a24a;--sn87-focus:#e9cb7f;--sn87-steel:#6e89a6;--sn87-line:#22344f;--sn87-hair:rgba(110,137,166,.28);
  --sn87-warn:#f4a58f;--sn87-ok:#8fd6a8;--sn87-link:#8fc0ea;
  --sn87-serif:'Spectral',Georgia,serif;--sn87-sans:'IBM Plex Sans',system-ui,sans-serif;--sn87-mono:'IBM Plex Mono',ui-monospace,monospace;
  --sn87-radius:2px;--sn87-s:8px;--sn87-gutter:clamp(16px,5vw,64px);--sn87-max:1200px;--sn87-touch:44px;
}
.sn87-skip{position:absolute;left:-999px;top:0;z-index:100;padding:8px 12px;background:var(--sn87-navy);color:var(--sn87-ivory);border:2px solid var(--sn87-focus)}
.sn87-skip:focus{left:8px;top:8px}
/* status component: one place for environment / state truth */
.sn87-status{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:4px 16px;padding:8px var(--sn87-gutter);background:var(--sn87-navy);border-bottom:1px solid var(--sn87-hair);color:var(--sn87-focus);font:500 12px/1.4 var(--sn87-mono);letter-spacing:.12em;text-transform:uppercase;text-align:center}
.sn87-status[data-env="dev"]{color:var(--sn87-link)}
.sn87-status[data-env="blocked"]{color:var(--sn87-warn)}
.sn87-status strong{font-weight:500}
/* header and navigation: Overview | Observatory | Testnet | Onboarding */
.sn87-header{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 24px;max-width:var(--sn87-max);margin:0 auto;padding:16px var(--sn87-gutter)}
.sn87-brand{display:inline-flex;align-items:baseline;gap:12px;min-height:var(--sn87-touch);align-items:center;color:var(--sn87-ivory);text-decoration:none}
.sn87-brand b{font:500 13px/1 var(--sn87-mono);letter-spacing:.32em}
.sn87-brand span{font:400 14px/1 var(--sn87-sans);color:var(--sn87-muted)}
.sn87-nav{display:flex;flex-wrap:wrap;gap:4px 8px}
.sn87-nav a{display:inline-flex;align-items:center;min-height:var(--sn87-touch);padding:0 12px;border-bottom:2px solid transparent;color:var(--sn87-muted);font:500 12px/1 var(--sn87-mono);letter-spacing:.14em;text-transform:uppercase;text-decoration:none}
.sn87-nav a:hover{color:var(--sn87-ivory)}
.sn87-nav a[aria-current="page"]{color:var(--sn87-focus);border-bottom-color:var(--sn87-gold)}
/* footer */
.sn87-footer{max-width:var(--sn87-max);margin:48px auto 0;padding:24px var(--sn87-gutter) 40px;border-top:1px solid var(--sn87-line);display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;color:var(--sn87-muted);font:400 13px/1.6 var(--sn87-sans)}
.sn87-footer b{font:500 12px/1 var(--sn87-mono);letter-spacing:.28em;color:var(--sn87-ivory)}
.sn87-footer nav{display:flex;flex-wrap:wrap;gap:0 8px}
.sn87-footer a{display:inline-flex;align-items:center;min-height:var(--sn87-touch);padding:0 8px;color:var(--sn87-muted)}
/* type */
.sn87-eyebrow{font:500 12px/1.4 var(--sn87-mono);letter-spacing:.2em;text-transform:uppercase;color:var(--sn87-gold);margin:0}
.sn87-h1,.sn87-h2{font-family:var(--sn87-serif);font-weight:400;color:var(--sn87-ivory);margin:0;line-height:1.08;text-wrap:balance}
.sn87-h1{font-size:clamp(38px,6vw,72px)}.sn87-h2{font-size:clamp(26px,3.4vw,40px);line-height:1.15}
.sn87-lede{font:400 18px/1.6 var(--sn87-sans);color:var(--sn87-body);max-width:62ch}
.sn87-num{font-family:var(--sn87-mono);font-variant-numeric:tabular-nums}
/* controls: one gold primary per decision area, secondary outlined */
.sn87-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:var(--sn87-touch);padding:10px 18px;border:1px solid var(--sn87-steel);border-radius:var(--sn87-radius);background:transparent;color:var(--sn87-ivory);font:500 14px/1.2 var(--sn87-sans);text-decoration:none;cursor:pointer;touch-action:manipulation}
.sn87-btn:hover{border-color:var(--sn87-focus);color:var(--sn87-focus)}
.sn87-btn.primary{background:var(--sn87-gold);border-color:var(--sn87-gold);color:var(--sn87-midnight);font-weight:600}
.sn87-btn.primary:hover{background:var(--sn87-focus);border-color:var(--sn87-focus);color:var(--sn87-midnight)}
.sn87-btn[aria-pressed="true"],.sn87-btn.active{border-color:var(--sn87-focus);background:var(--sn87-raise)}
.sn87-btn:disabled,.sn87-btn[aria-disabled="true"]{border-color:var(--sn87-line);color:var(--sn87-muted);cursor:not-allowed}
/* panels, tags, tables */
.sn87-panel{border:1px solid var(--sn87-hair);border-radius:var(--sn87-radius);background:rgba(12,30,56,.55);padding:16px 24px}
.sn87-tag{display:inline-block;padding:2px 8px;border:1px solid var(--sn87-steel);border-radius:var(--sn87-radius);font:500 11px/1.4 var(--sn87-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--sn87-muted)}
.sn87-tag.gold{border-color:var(--sn87-gold);color:var(--sn87-focus)}
.sn87-table{border-collapse:collapse;width:100%;font-variant-numeric:tabular-nums}
.sn87-table th{font:500 11px/1.4 var(--sn87-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--sn87-muted);text-align:left;padding:8px;border-bottom:1px solid var(--sn87-hair)}
.sn87-table td{padding:8px;border-bottom:1px solid var(--sn87-line);vertical-align:top}
/* one focus treatment everywhere */
.sn87-surface :focus-visible,.sn87-header :focus-visible,.sn87-footer :focus-visible{outline:2px solid var(--sn87-focus);outline-offset:3px}
@media (max-width:640px){.sn87-header{padding-block:8px}.sn87-nav{width:100%;flex-wrap:nowrap;justify-content:space-between}.sn87-nav a{padding:0 4px;font-size:11px;letter-spacing:.04em}}
@media (prefers-reduced-motion:reduce){.sn87-btn{transition:none}}