/* ============================================================
   SolarSystemOS — shared stylesheet
   Palette is a calibrated colormap, not a brand palette.
   Luminance encodes certainty:
   gold (observed) > orange (building) > magenta (projected) > violet (modeled)
   ============================================================ */
:root{
  --void:#12161C; --bg:#1B2027; --bg-2:#232932; --bg-3:#2C333E;
  --line:#414A57; --line-soft:#333B46;
  --fg:#EEF1F5; --fg-2:#BAC3CF; --fg-3:#8D97A6; --fg-4:#626C7A;
  --paper:#E9E7E2; --paper-2:#DEDBD4; --paper-ink:#1B2027; --paper-fg2:#545C68; --paper-line:#C6C2B9;
  --c-obs:#F7CD52; --c-head:#8FB8E0; --c-link:#DCE3EB; --c-link-u:rgba(143,184,224,.45); --c-head-2:#E08A5B; --c-bld:#F57C42; --c-prj:#DC5AA4; --c-mdl:#9B72E6;
  --display:"Archivo","Helvetica Neue",Arial,sans-serif;
  --body:"Instrument Sans","Helvetica Neue",Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  --wrap:1280px; --gut:34px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--body);font-size:17px;line-height:1.62;-webkit-font-smoothing:antialiased}
a{color:inherit}
img,svg{display:block;max-width:100%}
:focus-visible{outline:2px solid var(--c-obs);outline-offset:3px}
.sos-wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.sos-rule{height:1px;background:var(--line-soft);border:0;margin:0}

/* ---------- masthead ---------- */
/* ============ navigation: dropdowns + hamburger ============ */
.sos-head{position:sticky;top:0;z-index:200;background:rgba(18,22,28,.94);
        backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
        border-bottom:1px solid rgba(65,74,87,.55)}
.sos-logo{display:flex;align-items:center;gap:12px;text-decoration:none;flex:0 0 auto}
.sos-logo__mark{width:24px;height:24px;flex:0 0 24px;overflow:visible}
.sos-logo__word{font-family:var(--display);font-variation-settings:"wdth" 112,"wght" 700;
        font-size:17px;letter-spacing:-.01em;color:var(--fg);white-space:nowrap;line-height:1}
.sos-logo__word span{color:var(--fg-3);font-variation-settings:"wdth" 112,"wght" 400}
.sos-head__inner{display:flex;align-items:center;gap:20px;height:68px;position:relative}
.nv{margin-left:auto;display:flex;align-items:center;gap:2px}
.nv-item{position:relative}
.nv-top{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:11.5px;font-weight:500;
        letter-spacing:.08em;text-transform:uppercase;color:var(--fg-2);text-decoration:none;
        padding:24px 10px;border-bottom:2px solid transparent;transition:color .16s,border-color .16s}
.nv-top::after{content:"";width:5px;height:5px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;
        transform:rotate(45deg) translate(-1px,-1px);opacity:.55;transition:transform .18s}
.nv-item--flat .nv-top::after{display:none}
.nv-top:hover,.nv-item:hover .nv-top,.nv-item:focus-within .nv-top,.nv-top[aria-current]{color:var(--fg);border-bottom-color:var(--c-bld)}
.nv-item:hover .nv-top::after,.nv-item:focus-within .nv-top::after{transform:rotate(225deg) translate(-2px,-2px);opacity:1}

.nv-panel{position:absolute;top:100%;left:-14px;min-width:250px;background:var(--bg-2);
        border:1px solid var(--line);border-top:2px solid var(--c-bld);padding:14px 0;
        opacity:0;visibility:hidden;transform:translateY(-7px);transition:opacity .17s,transform .17s,visibility .17s;
        box-shadow:0 18px 40px -18px rgba(0,0,0,.75)}
.nv-item:hover .nv-panel,.nv-item:focus-within .nv-panel{opacity:1;visibility:visible;transform:translateY(0)}
.nv-panel ul{list-style:none;margin:0;padding:0}
.nv-panel a{display:block;padding:7px 20px;font-size:14.5px;color:var(--fg-2);text-decoration:none;white-space:nowrap;
        border-left:2px solid transparent;transition:color .14s,background .14s,border-color .14s}
.nv-panel a:hover,.nv-panel a:focus-visible{color:var(--fg);background:var(--bg-3);border-left-color:var(--c-obs)}
.nv-panel .nv-h{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.15em;text-transform:uppercase;
        color:var(--fg-4);padding:12px 20px 5px}
.nv-panel .nv-h:first-child{padding-top:0}
.nv-sep{height:1px;background:var(--line-soft);margin:10px 0}

/* mega panel — Destinations. The item goes static so the panel anchors to the header row. */
.nv-item--mega{position:static}
.nv-panel--mega{left:0;right:0;width:auto;padding:20px 0 22px;
        display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 8px}
.nv-panel--mega > div{padding:0 10px}

/* right-aligned panels near the viewport edge */
.nv-item:not(.nv-item--mega):nth-last-child(-n+2) .nv-panel{left:auto;right:-14px}

/* hamburger */
.nv-burger{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);background:none;
        cursor:pointer;padding:0;position:relative}
.nv-burger span{position:absolute;left:11px;width:18px;height:1.5px;background:var(--fg);transition:.22s}
.nv-burger span:nth-child(1){top:14px}
.nv-burger span:nth-child(2){top:20px}
.nv-burger span:nth-child(3){top:26px}
.nv-burger[aria-expanded="true"] span:nth-child(1){top:20px;transform:rotate(45deg)}
.nv-burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.nv-burger[aria-expanded="true"] span:nth-child(3){top:20px;transform:rotate(-45deg)}
.nv-toggle{display:none}

@media(max-width:1240px){
  .nv-top{padding:24px 7px;font-size:11px;letter-spacing:.06em}
}
@media(max-width:1000px){
  .nv-burger{display:block}
  .sos-head{backdrop-filter:none;-webkit-backdrop-filter:none;background:rgb(18,22,28)}
  .nv{position:fixed;top:68px;left:0;right:0;bottom:0;margin:0;display:block;overflow-y:auto;
      background:var(--void);border-top:1px solid var(--line);padding:8px 0 60px;
      transform:translateY(-8px);opacity:0;visibility:hidden;transition:.2s}
  .nv[data-open]{transform:none;opacity:1;visibility:visible}
  .nv-item,.nv-item--mega{position:relative;border-bottom:1px solid var(--line-soft);display:flex;flex-wrap:wrap;align-items:center}
  .nv-top{flex:1;padding:17px 22px;font-size:13px;letter-spacing:.12em;border-bottom:0}
  .nv-top::after{display:none}
  .nv-item:hover .nv-top{border-bottom-color:transparent}
  .nv-toggle{display:block;width:54px;height:54px;background:none;border:0;border-left:1px solid var(--line-soft);
      cursor:pointer;position:relative;flex:0 0 54px}
  .nv-toggle::before,.nv-toggle::after{content:"";position:absolute;background:var(--fg-2);transition:.2s}
  .nv-toggle::before{left:23px;top:17px;width:1.5px;height:20px}
  .nv-toggle::after{left:14px;top:26px;width:20px;height:1.5px}
  .nv-item[data-open] .nv-toggle::before{transform:rotate(90deg);opacity:0}
  .nv-item[data-open] .nv-toggle{background:var(--bg-2)}
  .nv-panel,.nv-panel--mega{position:static;width:auto;min-width:0;opacity:1;visibility:visible;transform:none;
      border:0;border-top:1px solid var(--line-soft);background:var(--bg);box-shadow:none;
      display:none;padding:8px 0 12px;flex-basis:100%;grid-template-columns:1fr;left:auto;right:auto}
  .nv-item[data-open] .nv-panel{display:block}
  .nv-item:hover .nv-panel,.nv-item:focus-within .nv-panel{opacity:1;visibility:visible;transform:none}
  .nv-panel a{padding:10px 34px;font-size:15px;white-space:normal}
  .nv-panel .nv-h{padding:16px 34px 4px;border-top:1px solid var(--line-soft);margin-top:8px}
  .nv-panel > div:first-child .nv-h{border-top:0;margin-top:0;padding-top:6px}
  .nv-item:not(.nv-item--mega):nth-last-child(-n+2) .nv-panel{right:auto}
  body[data-navlock]{overflow:hidden}
}

/* ---------- shared type ---------- */
.sos-eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.15em;text-transform:uppercase;color:var(--fg-3);margin:0 0 16px}
.sos-h2{font-family:var(--display);font-variation-settings:"wdth" 118,"wght" 620;font-size:clamp(30px,3.6vw,44px);line-height:1.04;letter-spacing:-.018em;margin:0 0 18px}
.sos-lede{font-size:clamp(17px,1.4vw,19px);color:var(--fg-2);max-width:62ch;margin:0}
.sos-sec{padding:88px 0}
.sos-sec__head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:56px;align-items:start;margin-bottom:44px}

/* ---------- destination hero ---------- */
.dp-hero{position:relative;background:var(--void);overflow:hidden;border-bottom:1px solid var(--line)}
.dp-hero__art{position:absolute;inset:0}
.dp-hero__art svg{width:100%;height:100%}
.dp-hero__veil{position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(18,22,28,.72) 0%,rgba(18,22,28,.32) 34%,rgba(18,22,28,.86) 100%)}
.dp-hero__inner{position:relative;z-index:2;padding:34px var(--gut) 44px;min-height:520px;display:flex;flex-direction:column}
.dp-crumb{font-family:var(--mono);font-size:12px;letter-spacing:.13em;text-transform:uppercase;
    color:var(--fg-3);margin-bottom:auto}
.dp-crumb a{color:var(--fg-3);text-decoration:none}
.dp-crumb a:hover{color:var(--fg)}
.dp-hero h1{font-family:var(--display);font-variation-settings:"wdth" 122,"wght" 660;
    font-size:clamp(46px,7vw,92px);line-height:.94;letter-spacing:-.032em;margin:0 0 10px;color:#fff}
.dp-hero__anchor{font-family:var(--mono);font-size:14px;letter-spacing:.09em;color:var(--c-bld);margin:0 0 18px}
.dp-hero__thesis{font-size:clamp(17px,1.5vw,21px);color:var(--fg-2);max-width:64ch;margin:0}
.dp-hero__thesis strong{color:var(--fg);font-weight:600}
@media(max-width:760px){
  .dp-hero__inner{min-height:0;padding:26px var(--gut) 36px}
}

/* ---------- page header (interior pages) ---------- */
.pg-head{border-bottom:1px solid var(--line);background:var(--bg-2);padding:30px 0 40px}
.pg-crumb{font-family:var(--mono);font-size:12px;letter-spacing:.13em;text-transform:uppercase;color:var(--fg-3);margin-bottom:22px}
.pg-crumb a{color:var(--fg-3);text-decoration:none}
.pg-crumb a:hover{color:var(--fg)}
.pg-head h1{font-family:var(--display);font-variation-settings:"wdth" 120,"wght" 660;font-size:clamp(36px,5vw,60px);line-height:1;letter-spacing:-.03em;margin:0 0 14px}
.pg-head__sub{font-size:clamp(16px,1.4vw,19px);color:var(--fg-2);max-width:70ch;margin:0}
.pg-head__sub strong{color:var(--fg);font-weight:600}

/* ---------- child-page inherited hero band ---------- */
/* A slim crop of the parent destination's hero, so a child page shows where it lives. */
.pg-hero{position:relative;overflow:hidden;background:var(--void);border-bottom:1px solid var(--line)}
.pg-hero{min-height:230px}
.pg-hero__art{position:absolute;left:0;right:0;bottom:0;height:420px}
.pg-hero__art svg{width:100%;height:100%;display:block;object-fit:cover;object-position:center bottom}
.pg-hero__veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(18,22,28,.58) 0%,rgba(18,22,28,.5) 42%,rgba(18,22,28,.86) 100%)}
.pg-hero__inner{position:relative;z-index:2;padding:26px var(--gut) 30px}
.pg-hero .pg-crumb{color:var(--fg-2)}
.pg-hero .pg-crumb a{color:var(--fg-3)}
.pg-hero .pg-crumb a:hover{color:var(--fg)}
.pg-hero h1{color:#fff}
.pg-hero__tag{font-family:var(--mono);font-size:12.5px;letter-spacing:.09em;color:var(--c-head);margin:10px 0 0}
.pg-hero__lede{font-family:var(--display);font-variation-settings:"wght" 400;font-size:clamp(15px,1.55vw,18px);line-height:1.5;color:var(--fg-1);margin:14px 0 0;max-width:70ch;text-shadow:0 1px 12px rgba(10,12,16,.5)}
.pg-hero__lede strong{color:#fff;font-variation-settings:"wght" 600}
@media(max-width:760px){.pg-hero__art{height:360px}.pg-hero{min-height:250px}}

/* ---------- buttons ---------- */
.sos-btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:12.5px;font-weight:500;letter-spacing:.13em;text-transform:uppercase;color:var(--fg);text-decoration:none;border:1px solid var(--line);padding:14px 20px;background:rgba(27,32,39,.5);transition:.2s;white-space:nowrap}
.sos-btn:hover{border-color:var(--c-obs);color:#fff;background:rgba(247,205,82,.08)}
.sos-btn--solid{background:var(--c-obs);color:#171B21;border-color:var(--c-obs)}
.sos-btn--solid:hover{background:#FFD968;color:#171B21}

/* ---------- confidence tag, with pattern redundancy for greyscale ---------- */
.cf{font-family:var(--mono);font-size:10px;letter-spacing:.13em;text-transform:uppercase;white-space:nowrap;display:inline-flex;align-items:center;gap:6px}
.cf::before{content:"";width:16px;height:3px;border-radius:1px}
.cf--obs{color:var(--c-obs)} .cf--bld{color:var(--c-bld)} .cf--prj{color:var(--c-prj)} .cf--mdl{color:var(--c-mdl)}
.cf--obs::before{background:var(--c-obs)}
.cf--bld::before{background-image:repeating-linear-gradient(90deg,var(--c-bld) 0 5px,transparent 5px 8px)}
.cf--prj::before{background-image:repeating-linear-gradient(90deg,var(--c-prj) 0 2px,transparent 2px 5px)}
.cf--mdl::before{background-image:repeating-linear-gradient(135deg,var(--c-mdl) 0 1px,transparent 1px 4px)}

/* ---------- stat strip ---------- */
.dp-strip{border-bottom:1px solid var(--line);background:var(--bg-2)}
.dp-strip__grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr))}
.dp-strip__c{padding:18px 20px;border-left:1px solid var(--line-soft)}
.dp-strip__c:first-child{border-left:0;padding-left:0}
.dp-strip__k{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--fg-3);margin-bottom:5px}
.dp-strip__v{font-family:var(--mono);font-size:16px;color:var(--fg);font-variant-numeric:tabular-nums}
.dp-strip__v em{font-style:normal;font-size:12px;color:var(--fg-3)}

/* ---------- body layout with sticky toc ---------- */
.dp-body{display:grid;grid-template-columns:196px minmax(0,1fr);gap:56px;padding:72px var(--gut) 92px}
.dp-toc{position:sticky;top:96px;align-self:start}
.dp-toc h4{font-family:var(--mono);font-size:11px;letter-spacing:.15em;text-transform:uppercase;color:var(--fg-3);margin:0 0 14px}
.dp-toc ol{list-style:none;margin:0;padding:0;counter-reset:t}
.dp-toc li{counter-increment:t;margin-bottom:10px}
.dp-toc a{font-size:14.5px;color:var(--fg-2);text-decoration:none;display:flex;gap:10px}
.dp-toc a::before{content:counter(t,decimal-leading-zero);font-family:var(--mono);font-size:11px;color:var(--fg-4);padding-top:3px}
.dp-toc a:hover{color:var(--fg)}
.dp-toc a.is-active{color:var(--c-head)}
.dp-toc a.is-active::before{color:var(--c-head)}
.dp-sec{margin-bottom:70px;scroll-margin-top:96px}
.dp-sec:last-child{margin-bottom:0}
.dp-sec .dp-sec__k{font-family:var(--mono);font-size:11.5px;letter-spacing:.15em;text-transform:uppercase;color:var(--c-head);margin:0 0 12px;display:flex;align-items:center;gap:10px}
.dp-sec .dp-sec__k::before{content:"";width:22px;height:2px;background:var(--c-head);opacity:.9;flex:0 0 22px}
.dp-sec h2{font-family:var(--display);font-variation-settings:"wdth" 116,"wght" 620;font-size:clamp(26px,3vw,34px);letter-spacing:-.02em;line-height:1.08;margin:0 0 18px;color:var(--c-head)}
.dp-sec h3{font-family:var(--display);font-variation-settings:"wdth" 114,"wght" 620;font-size:19px;letter-spacing:-.012em;margin:32px 0 10px;color:var(--c-head-2)}
.dp-sec p{color:var(--fg-2);margin:0 0 18px;max-width:74ch}
.dp-sec p strong{color:var(--fg);font-weight:600}
.dp-lead{font-size:inherit}
.dp-sec .dp-sec__lede{font-family:var(--display);font-variation-settings:"wdth" 112,"wght" 500;font-size:clamp(19px,1.9vw,23px);line-height:1.24;letter-spacing:-.01em;color:var(--fg-2);margin:-6px 0 20px;max-width:70ch}


/* ---------- data tables ---------- */
.dp-tbl{width:100%;border-collapse:collapse;margin:0 0 8px}
.dp-tbl caption{text-align:left;font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--fg-3);padding-bottom:12px}
.dp-tbl th{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.13em;text-transform:uppercase;color:var(--fg-3);text-align:left;padding:0 14px 10px 0;border-bottom:1px solid var(--line);white-space:nowrap}
.dp-tbl td{padding:13px 14px 13px 0;border-bottom:1px solid var(--line-soft);font-size:15px;vertical-align:top}
.dp-tbl td:first-child{color:var(--fg);font-weight:600;width:31%}
.dp-tbl td.num{font-family:var(--mono);font-size:14px;font-variant-numeric:tabular-nums;color:var(--fg-2)}
.dp-tbl tr:hover td{background:var(--bg-2)}
.dp-tbl a{color:var(--c-link);text-decoration:none;border-bottom:1px solid var(--c-link-u)}
.dp-tbl a:hover{color:#fff;border-bottom-color:var(--c-head)}
.dp-two{display:grid;grid-template-columns:1fr 1fr;gap:44px}

/* ---------- figure ---------- */
.dp-fig{margin:0 0 8px}
.dp-fig__frame{border:1px solid var(--line);background:var(--void);line-height:0}
.dp-fig figcaption{font-family:var(--mono);font-size:12px;color:var(--fg-3);padding-top:12px;line-height:1.55;max-width:80ch}
.dp-fig figcaption b{color:var(--fg-2);font-weight:500}

/* ---------- reading cards ---------- */
.dp-reads{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line)}
.dp-read{background:var(--bg);padding:24px 26px 26px}
.dp-read__k{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--fg-3);margin-bottom:10px}
.dp-read h3{margin:0 0 10px;font-family:var(--display);font-variation-settings:"wdth" 114,"wght" 620;font-size:20px}
.dp-read p{font-size:15px;margin:0;color:var(--fg-2)}

/* ---------- callout ---------- */
.dp-note{display:grid;grid-template-columns:auto minmax(0,1fr);gap:22px;border:1px solid var(--line);border-left:3px solid var(--c-prj);background:var(--bg-2);padding:22px 26px;margin:0 0 22px}
.dp-note__k{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--c-prj);white-space:nowrap;padding-top:4px}
.dp-note p{margin:0;font-size:15.5px;color:var(--fg-2)}

/* ---------- record block ---------- */
.dp-record{border:1px solid var(--line);background:var(--bg-2);padding:26px 28px}
.dp-record dl{display:grid;grid-template-columns:150px minmax(0,1fr);gap:10px 22px;margin:0;font-size:14.5px}
.dp-record dt{font-family:var(--mono);font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--fg-3);padding-top:4px}
.dp-record dd{margin:0;color:var(--fg-2)}

/* ---------- reference tables (orbits) ---------- */
.rf-scroll{overflow-x:auto;border:1px solid var(--line);margin:0 0 10px;-webkit-overflow-scrolling:touch}
.rf-tbl{width:100%;border-collapse:collapse;min-width:760px}
.rf-tbl caption{text-align:left;font-family:var(--mono);font-size:11.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--fg-3);padding:16px 18px 12px}
.rf-tbl th{position:sticky;top:0;background:var(--bg-2);font-family:var(--mono);font-size:10.5px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--fg-3);text-align:left;padding:12px 16px;border-bottom:1px solid var(--line);white-space:nowrap;z-index:1}
.rf-tbl td{padding:14px 16px;border-bottom:1px solid var(--line-soft);font-size:14.5px;vertical-align:top;color:var(--fg-2)}
.rf-tbl tr:last-child td{border-bottom:0}
.rf-tbl tbody tr:hover td{background:var(--bg-2)}
.rf-tbl td:first-child{color:var(--fg);font-weight:600;white-space:normal;min-width:12em;max-width:19em}
.rf-tbl .sub{display:block;font-size:.82em;font-weight:400;color:var(--fg-3);margin-top:3px;line-height:1.45}
.rf-tbl .rf-alt{font-family:var(--mono);font-size:12px;color:var(--fg-3);display:block;margin-top:2px;font-weight:400}
.rf-tbl .num{font-family:var(--mono);font-size:13.5px;font-variant-numeric:tabular-nums;color:var(--fg-2);white-space:nowrap}
.rf-band{width:4px;padding:0!important}
.rf-tbl a{color:var(--c-link);text-decoration:none;border-bottom:1px solid var(--c-link-u)}
.rf-tbl a:hover{color:#fff;border-bottom-color:var(--c-head)}
.rf-legend{display:flex;flex-wrap:wrap;gap:18px;margin:14px 0 0;font-family:var(--mono);font-size:11.5px;color:var(--fg-3)}
.rf-legend span{display:inline-flex;align-items:center;gap:8px}
.rf-legend i{width:14px;height:10px;border-radius:2px;flex:0 0 14px}

/* section band for hub/reference pages that reuse dp-sec */
.rf-note{font-family:var(--mono);font-size:12.5px;color:var(--fg-3);line-height:1.6;margin:6px 0 0}

/* ---------- filter bar ---------- */
.sos-filters{display:flex;flex-wrap:wrap;gap:10px;padding:16px 0 22px;border-bottom:1px solid var(--line);margin-bottom:26px;align-items:center}
.sos-filters__k{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--fg-3);margin-right:4px}
.chip{font-family:var(--mono);font-size:11px;letter-spacing:.11em;text-transform:uppercase;color:var(--fg-2);border:1px solid var(--line);padding:6px 12px;background:none;cursor:pointer;transition:.16s}
.chip:hover{color:var(--fg);border-color:var(--fg-3)}
.chip[data-on]{color:#12161C;background:var(--fg-2);border-color:var(--fg-2)}

/* ---------- dataset cards ---------- */
.sos-ds{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.sos-ds__c{background:var(--bg);padding:24px 26px 26px;text-decoration:none;display:block;transition:background .2s}
a.sos-ds__c:hover{background:var(--bg-2)}
.sos-ds__k{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--fg-3);margin-bottom:10px;display:flex;justify-content:space-between;gap:12px}
.sos-ds__c h3{margin:0 0 8px;font-family:var(--display);font-variation-settings:"wdth" 114,"wght" 620;font-size:21px;letter-spacing:-.015em}
.sos-ds__c p{margin:0 0 14px;font-size:15px;color:var(--fg-2)}
.sos-ds__meta{font-family:var(--mono);font-size:11.5px;color:var(--fg-3);border-top:1px solid var(--line-soft);padding-top:11px;line-height:1.55}
.sos-ds__meta b{color:var(--fg-2);font-weight:500}
.sos-st{font-family:var(--mono);font-size:10px;letter-spacing:.13em;text-transform:uppercase;white-space:nowrap}
.sos-st--live{color:var(--c-obs)} .sos-st--build{color:var(--c-bld)}
.sos-st--schema{color:var(--c-prj)} .sos-st--plan{color:var(--c-mdl)}

/* ---------- pager ---------- */
.dp-pager{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);margin-top:68px}
.dp-pager a{background:var(--bg);padding:24px 26px;text-decoration:none;transition:background .2s}
.dp-pager a:hover{background:var(--bg-2)}
.dp-pager span{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--fg-3);margin-bottom:7px}
.dp-pager b{font-family:var(--display);font-variation-settings:"wdth" 114,"wght" 620;font-size:20px;font-weight:400}
.dp-pager a:last-child{text-align:right}

/* ---------- back-to-top ---------- */
.sos-top{position:fixed;right:26px;bottom:26px;z-index:120;width:46px;height:46px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(27,32,39,.86);border:1px solid var(--line);color:var(--fg-2);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .22s,transform .22s,visibility .22s,border-color .18s,color .18s}
.sos-top[data-show]{opacity:1;visibility:visible;transform:none}
.sos-top:hover{color:var(--fg);border-color:var(--c-obs)}
.sos-top svg{width:18px;height:18px;display:block}
@media(max-width:760px){.sos-top{right:16px;bottom:16px;width:42px;height:42px}}
@media print{.sos-top{display:none}}

/* ---------- footer ---------- */
/* ---------- destination grid (shared: homepage + Destinations hub) ---------- */
.sos-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line);border-left:1px solid var(--line)}
.sos-cell{border-right:1px solid var(--line);border-bottom:1px solid var(--line);text-decoration:none;display:block;position:relative;overflow:hidden;background:var(--bg);transition:background .22s ease}
.sos-cell:hover,.sos-cell:focus-visible{background:var(--bg-2)}
.sos-cell__art{height:148px;background:var(--void);position:relative;overflow:hidden;border-bottom:1px solid var(--line-soft)}
.sos-cell__art svg{width:100%;height:100%;transition:transform .5s cubic-bezier(.2,.7,.3,1)}
.sos-cell:hover .sos-cell__art svg{transform:scale(1.045)}
.sos-cell__badge{position:absolute;left:20px;top:18px;z-index:2;font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;color:var(--fg-2);text-transform:uppercase}
.sos-cell__body{padding:24px 26px}
.sos-cell__name{font-family:var(--display);font-variation-settings:"wdth" 112,"wght" 620;font-size:25px;line-height:1.08;letter-spacing:-.015em;margin:0 0 7px;color:var(--fg)}
.sos-cell__anchor{font-family:var(--mono);font-size:12.5px;color:var(--accent,var(--fg-3));letter-spacing:.03em;margin:0 0 15px}
.sos-cell__desc{font-size:15.5px;color:var(--fg-2);margin:0 0 22px}
.sos-cell__data{border-top:1px solid var(--line-soft);padding-top:14px;margin:0}
.sos-cell__row{display:flex;justify-content:space-between;gap:14px;font-family:var(--mono);font-size:12.5px;padding:4px 0;font-variant-numeric:tabular-nums}
.sos-cell__row dt{color:var(--fg-3);margin:0;letter-spacing:.04em}
.sos-cell__row dd{color:var(--fg);margin:0;text-align:right}
.sos-cell__foot{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:20px}
.sos-chip{display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:11.5px;font-weight:500;letter-spacing:.13em;text-transform:uppercase;color:var(--fg-2)}
.sos-bars{display:inline-flex;gap:2px}
.sos-bars i{display:block;width:10px;height:4px;background:var(--line);border-radius:1px}
.sos-cell__go{font-family:var(--mono);font-size:13px;color:var(--fg-3);transition:color .2s,transform .2s}
.sos-cell:hover .sos-cell__go{color:var(--accent,var(--fg));transform:translateX(3px)}
.sos-pres{display:inline-flex;align-items:center;gap:7px}
.sos-pres i{width:9px;height:9px;border:1.4px solid currentColor;display:block}
.sos-pres--crew i{background:currentColor}
.sos-pres--part i{background:linear-gradient(180deg,currentColor 0 50%,transparent 50% 100%)}
/* band grouping label for the hub */
.sos-band{font-family:var(--mono);font-size:11.5px;letter-spacing:.15em;text-transform:uppercase;color:var(--c-head);display:flex;align-items:center;gap:12px;margin:52px 0 0;padding-bottom:2px}
.sos-band::before{content:"";width:24px;height:2px;background:var(--c-head)}
.sos-band:first-of-type{margin-top:8px}
.sos-band__n{color:var(--fg-3);letter-spacing:.04em}
@media(max-width:1000px){.sos-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.sos-grid{grid-template-columns:1fr}}

/* ---------- footer grid (shared) ---------- */
.sos-foot{border-top:1px solid var(--line);padding:60px 0 70px}
.sos-foot__grid{display:grid;grid-template-columns:1.4fr repeat(3,minmax(0,1fr));gap:34px}
.sos-foot h4{font-family:var(--mono);font-size:11.5px;font-weight:500;letter-spacing:.15em;text-transform:uppercase;color:var(--fg-3);margin:0 0 16px}
.sos-foot ul{list-style:none;margin:0;padding:0}
.sos-foot li{margin-bottom:10px}
.sos-foot a{font-size:15.5px;color:var(--fg-2);text-decoration:none}
.sos-foot a:hover,.sos-foot a:focus-visible{color:var(--fg)}
.sos-foot__note{font-size:15.5px;color:var(--fg-2);margin:16px 0 0;max-width:38ch}
.sos-foot__bar{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;border-top:1px solid var(--line-soft);margin-top:48px;padding-top:24px;font-family:var(--mono);font-size:12.5px;color:var(--fg-3);letter-spacing:.04em}
@media(max-width:1000px){.sos-foot__grid{grid-template-columns:1fr 1fr 1fr;gap:28px}}
@media(max-width:620px){.sos-foot__grid{grid-template-columns:1fr 1fr;gap:26px}}
@media(max-width:420px){.sos-foot__grid{grid-template-columns:1fr;gap:26px}}

.sos-foot{border-top:1px solid var(--line);padding:44px 0 58px}
.sos-foot__bar{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;font-family:var(--mono);font-size:12px;color:var(--fg-3)}

/* ---------- responsive ---------- */
@media(max-width:1080px){
  .dp-body{grid-template-columns:minmax(0,1fr);gap:0;padding-top:52px}
  .dp-toc{display:none}
  .dp-strip__grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .dp-strip__c{border-left:0;border-top:1px solid var(--line-soft);padding-left:0}
  .dp-strip__c:nth-child(-n+3){border-top:0}
  .dp-two,.dp-reads,.sos-ds{grid-template-columns:1fr}
  .sos-sec__head{grid-template-columns:1fr;gap:20px}
}
@media(max-width:760px){
  :root{--gut:20px}
  body{font-size:16px}
  .sos-nav{display:none}
  .sos-sec{padding:62px 0}
  .dp-strip__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .dp-strip__c:nth-child(-n+3){border-top:1px solid var(--line-soft)}
  .dp-strip__c:nth-child(-n+2){border-top:0}
  .dp-note{grid-template-columns:1fr;gap:12px}
  .dp-pager{grid-template-columns:1fr}
  .dp-pager a:last-child{text-align:left}
  .dp-tbl td:first-child{width:42%}
}

/* links: off-white with a steel underline, brighten on hover (5 Oct 2026) */
a[style*="--c-link"]:hover{color:#fff!important;border-bottom-color:var(--c-head)!important}

/* phones: keep diagrams and form controls inside the screen (5 Oct 2026) */
main svg:not(#sf-svg){max-width:100%;height:auto}
.dp-hero__art,.pg-hero__art{overflow:hidden}
main select,main input{max-width:100%}
@media(max-width:760px){
  .dp-tbl,.sos-table{display:block;max-width:100%;overflow-x:auto}
  .cf,.dp-note__k{white-space:normal}
}
.cf--off{color:var(--fg-3);border-color:var(--line)}