/* ==========================================================================
   Neueling ecosystem: shared foundations for TPP, Procurement Superheroes
   and The Practice. Components read semantic tokens only. Each site loads
   this file, then one brand file that defines the --brand-* tokens.
   Approved Mon 28 Sep 2026: gold option A (muted brass), oxblood #5C1E26.
   ========================================================================== */

:root{
  /* Shared gold family. Meaning: "this matters". Frequency set per brand. */
  --gold-light:#D8BD7F;   /* text, rules, icons, focus on dark grounds */
  --gold:#B08D45;         /* fills and rules */
  --gold-deep:#735822;    /* text, icons, focus on cream and white */

  --ink:#16181D;
  --white:#FFFFFF;

  --font-display:'Instrument Serif',Georgia,'Times New Roman',serif;
  --font-text:'DM Sans',-apple-system,'Segoe UI',Roboto,sans-serif;
  --font-data:'Space Mono',ui-monospace,Menlo,Consolas,monospace;

  /* 8pt spacing scale */
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px;
  --s7:48px; --s8:64px; --s9:96px; --s10:128px;

  --container:1240px;
  --gutter:clamp(20px,5vw,64px);
  --section:clamp(56px,8vw,112px);
  --measure:34em;

  /* Brand defaults (overridden by brand-*.css) */
  --brand-primary:#0A1628;
  --brand-primary-light:#16264A;
  --brand-primary-deep:#050C18;
  --brand-surface:#F5F1E8;
  --brand-paper:#FBFAF7;
  --brand-text:#141C2B;
  --brand-muted:#3D434F;
  --brand-line:#E4E1D8;
  --on-primary:#FFFFFF;
  --on-primary-muted:rgba(255,255,255,.74);
  --on-primary-line:rgba(255,255,255,.14);
  --label-color:var(--brand-muted);
  --focus-light:var(--gold-deep);
  --focus-dark:var(--gold-light);
}

/* ---------- Base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--brand-paper);color:var(--brand-text);font:400 16.5px/1.6 var(--font-text)}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
p{margin:0}
h1,h2,h3,h4{margin:0;font-weight:400}
ul,ol{margin:0;padding:0;list-style:none}
figure,blockquote{margin:0}
:focus-visible{outline:2px solid var(--focus-light);outline-offset:3px}
.on-dark :focus-visible,.on-dark:focus-visible{outline-color:var(--focus-dark)}
.skip{position:absolute;left:-999px;top:0;background:var(--white);color:var(--ink);padding:10px 14px;z-index:100}
.skip:focus{left:12px;top:12px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- Type ---------- */
.serif{font-family:var(--font-display);font-weight:400}
.data{font-family:var(--font-data);font-size:11.5px;letter-spacing:.06em;text-transform:uppercase}
.h1{font-family:var(--font-display);font-size:clamp(42px,6vw,86px);line-height:1;letter-spacing:-.01em;text-wrap:balance}
.h2{font-family:var(--font-display);font-size:clamp(30px,3.6vw,50px);line-height:1.05;text-wrap:balance}
.h3{font-family:var(--font-display);font-size:clamp(22px,2vw,30px);line-height:1.15}
.lede{font-size:clamp(16.5px,1.4vw,19px);line-height:1.55;max-width:var(--measure)}
.body{font-size:16px;line-height:1.65;color:var(--brand-muted);max-width:var(--measure)}
.small{font-size:13.5px;line-height:1.5}
.muted{color:var(--brand-muted)}

/* Section label: a plain name for the section, sentence case */
.label{display:flex;align-items:center;gap:var(--label-gap,12px);font-size:13px;font-weight:600;color:var(--label-color)}
.label::before{content:"";width:var(--label-rule,0px);height:2px;background:currentColor;flex:none}
.on-dark .label{color:var(--on-primary-muted)}

/* ---------- Layout ---------- */
.wrap{max-width:var(--container);margin:0 auto;padding-inline:var(--gutter)}
.section{padding-block:var(--section)}
.stack{display:flex;flex-direction:column;gap:var(--s5)}
.stack-s{display:flex;flex-direction:column;gap:var(--s3)}
.split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,6vw,80px);align-items:start}
.split--end{align-items:end}
.split--even{grid-template-columns:repeat(2,minmax(0,1fr))}
.split--wide{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.head{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(20px,6vw,80px);align-items:end;margin-bottom:clamp(28px,4vw,48px)}
.row{display:flex;flex-wrap:wrap;align-items:center;gap:var(--s5)}

/* Grounds */
.bg-primary{background:var(--brand-primary);color:var(--on-primary)}
.bg-deep{background:var(--brand-primary-deep);color:var(--on-primary)}
.bg-surface{background:var(--brand-surface)}
.bg-paper{background:var(--brand-paper)}
.on-dark{color:var(--on-primary)}
.on-dark .body,.on-dark .muted{color:var(--on-primary-muted)}

/* ---------- Cross-brand bar ---------- */
.xbar{background:var(--brand-xbar,#050C18);color:rgba(255,255,255,.62);font-size:12.5px}
.xbar-in{max-width:var(--container);margin:0 auto;padding-inline:var(--gutter);display:flex;justify-content:space-between;align-items:center;min-height:36px;gap:16px}
.xbar-set{display:flex;gap:28px;align-items:center}
.xbar-set > *{padding-block:10px}
.xbar a{color:inherit;text-decoration:none}
.xbar a:hover{color:#fff}
.xbar [aria-current]{color:#fff;box-shadow:inset 0 -2px 0 var(--gold-light)}
.xbar-m{display:none}
.xbar-m summary{cursor:pointer;list-style:none;padding:9px 0;display:flex;justify-content:space-between;gap:12px}
.xbar-m summary b{color:#fff;font-weight:500}
.xbar-m summary::-webkit-details-marker{display:none}
.xbar-m[open] .xbar-drop{display:flex}
.xbar-drop{display:none;flex-direction:column;gap:10px;padding:6px 0 14px}

/* ---------- Site nav ---------- */
.site-nav{background:var(--brand-primary);color:var(--on-primary);border-bottom:1px solid var(--on-primary-line);position:sticky;top:0;z-index:40}
.nav-in{max-width:var(--container);margin:0 auto;padding-inline:var(--gutter);min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand-lockup{display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a:not(.btn){color:var(--on-primary-muted);text-decoration:none;font-size:14.5px;font-weight:500}
.nav-links a:not(.btn):hover,.nav-links a[aria-current]{color:var(--on-primary)}
.menu{display:none;position:relative}
.menu summary{list-style:none;cursor:pointer;width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--on-primary-line)}
.menu summary::-webkit-details-marker{display:none}
.menu-panel{position:absolute;right:0;top:52px;background:var(--brand-primary-deep);min-width:240px;padding:12px;display:flex;flex-direction:column;box-shadow:0 12px 30px rgba(0,0,0,.25)}
.menu-panel a{color:var(--on-primary);text-decoration:none;padding:12px;font-size:15px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:14px 22px;font:600 15px/1.2 var(--font-text);text-decoration:none;border:0;cursor:pointer;transition:background-color .15s,color .15s}
.btn--sm{min-height:44px;padding:11px 17px;font-size:14px}
.btn--light{background:var(--brand-surface);color:var(--brand-primary)}
.btn--light:hover{background:var(--white)}
.btn--primary{background:var(--brand-primary);color:var(--on-primary)}
.btn--primary:hover{background:var(--brand-primary-light)}
/* Primary action on a dark ground (TPP navy, PSH teal): light brass. The Practice keeps cream by its own rule. */
.btn--gold{background:var(--gold-light);color:var(--ink)}
.btn--gold:hover{background:#E8D6AA}
.link{font-weight:600;text-underline-offset:4px}
.short{display:none}
@media (max-width:820px){.long{display:none}.short{display:inline}}

/* ---------- Ledger (rows with rules, used instead of cards) ---------- */
.ledger{border-top:1px solid var(--brand-line)}
.ledger--strong{border-top:2px solid var(--brand-primary)}
.ledger-row{display:grid;grid-template-columns:minmax(120px,170px) minmax(0,1fr);gap:24px;padding:16px 0;border-bottom:1px solid var(--brand-line)}
.on-dark .ledger,.on-dark .ledger-row{border-color:var(--on-primary-line)}

/* ---------- Accordion (native details) ---------- */
.acc{border-bottom:1px solid var(--brand-line)}
.acc summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:minmax(0,1fr) 24px;gap:16px;padding:20px 0;align-items:start}
.acc summary::-webkit-details-marker{display:none}
.acc summary::after{content:"+";font-size:20px;line-height:1;color:var(--brand-primary);justify-self:end}
.acc[open] summary::after{content:"−"}
.acc-body{padding:0 0 22px}
.on-dark .acc{border-color:var(--on-primary-line)}
.on-dark .acc summary::after{color:var(--on-primary)}

/* ---------- Tabs ---------- */
.tabs{display:flex;gap:32px;border-bottom:1px solid var(--brand-line);overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{background:none;border:0;padding:14px 0;font:600 15px var(--font-text);color:var(--brand-muted);cursor:pointer;white-space:nowrap}
.tab[aria-selected="true"]{color:var(--brand-text);box-shadow:inset 0 -3px 0 var(--tab-mark,var(--brand-primary))}
.tabpanel[hidden]{display:none}

/* ---------- Quotes ---------- */
.quote{display:flex;flex-direction:column;gap:18px}
.quote blockquote{font-family:var(--font-display);font-size:clamp(21px,2vw,27px);line-height:1.3}
.cite{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--brand-muted)}
.cite b{color:var(--brand-text);font-weight:600}
.cite img{width:44px;height:44px;border-radius:50%;object-fit:cover}
.on-dark .cite{color:var(--on-primary-muted)}
.on-dark .cite b{color:var(--on-primary)}

/* ---------- Figures and schematics ---------- */
.figure{background:var(--brand-surface);padding:clamp(18px,2.4vw,28px);display:flex;flex-direction:column;gap:16px}
.fig-head{display:flex;justify-content:space-between;gap:12px;font-size:13px}
.fig-head span{color:var(--brand-muted)}
.panel-dark{background:rgba(255,255,255,.04);border:1px solid var(--on-primary-line);padding:22px;display:flex;flex-direction:column;gap:12px}
.panel-dark .fig-head span{color:var(--on-primary-muted)}

/* ---------- Forms ---------- */
.form{display:flex;flex-direction:column;gap:16px}
.form .pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13.5px;font-weight:500}
.field input,.field select,.field textarea{font:400 16px var(--font-text);padding:13px 14px;min-height:48px;border:1px solid var(--brand-line);background:var(--white);color:var(--brand-text);border-radius:0;width:100%}
.field textarea{min-height:110px;resize:vertical}
.on-dark .field label{color:var(--on-primary-muted)}
.on-dark .field input,.on-dark .field textarea,.on-dark .field select{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.3);color:var(--on-primary)}
.hp{position:absolute!important;left:-9999px!important}
.form-note{font-size:13px;color:var(--brand-muted)}
.on-dark .form-note{color:var(--on-primary-muted)}
.ajax-success{display:none}
.ajax-success h3{font-family:var(--font-display);font-size:30px;margin-bottom:8px}
.ajax-error{color:#B3261E;font-size:14px}
.on-dark .ajax-error{color:#FFB4AB}

/* ---------- Footer ---------- */
.footer{background:var(--brand-xbar,#050C18);color:rgba(255,255,255,.62);font-size:13.5px}
.footer-in{max-width:var(--container);margin:0 auto;padding:40px var(--gutter);display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.footer a{color:inherit;text-decoration:none}
.footer a:hover{color:#fff}
.footer-links{display:flex;flex-wrap:wrap;gap:6px 18px}

/* ---------- Status line (PSH, The Practice hero) ---------- */
.status-line{font-size:clamp(19px,1.9vw,25px);line-height:1.3;font-weight:500;color:var(--on-primary-muted)}
.status-line b{font-weight:700;color:var(--on-primary);white-space:nowrap}

/* ---------- Three sides strip (TPP and PSH) ---------- */
.sides{grid-column:1 / -1;border-top:1px solid var(--brand-line);padding-top:36px;display:flex;flex-direction:column;gap:22px}
.sides-top{display:flex;justify-content:space-between;align-items:baseline;gap:24px;flex-wrap:wrap}
.sides-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
.side{display:flex;flex-direction:column;gap:14px}
.side + .side{border-left:1px solid var(--brand-line);padding-left:32px}
.side b{font-size:15px}
.side .d{font-size:13px;color:var(--brand-muted)}
.logos{display:flex;align-items:center;gap:28px;flex-wrap:wrap;min-height:48px}
.logos img{width:auto;opacity:.72}

/* ---------- Secondary page components (all sites) ---------- */
.page-hero{padding-block:clamp(48px,7vw,104px)}
.page-hero .stack{max-width:880px;gap:24px}
.page-h1{font-family:var(--font-display);font-size:clamp(40px,5.2vw,72px);line-height:1.02;letter-spacing:-.01em;text-wrap:balance}
.crumb{font-size:13px;color:var(--on-primary-muted)}
.crumb a{color:inherit}
.bul li{padding:9px 0;border-top:1px solid var(--brand-line);font-size:15px;line-height:1.5;color:var(--brand-muted)}
.on-dark .bul li{border-color:var(--on-primary-line);color:var(--on-primary-muted)}
.grid{display:grid;gap:clamp(24px,3vw,40px) clamp(24px,3vw,48px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.item{display:flex;flex-direction:column;gap:10px;padding-top:18px;border-top:1px solid var(--brand-line)}
.item--strong{border-top:2px solid var(--brand-primary)}
.on-dark .item{border-color:var(--on-primary-line)}
.item .n{font-family:var(--font-data);font-size:12px;letter-spacing:.06em;color:var(--gold-deep)}
.on-dark .item .n{color:var(--gold-light)}
.item h3{font-size:18px;font-weight:600;line-height:1.3}
.item h3.h3{font-family:var(--font-display);font-size:clamp(22px,2vw,27px);font-weight:400;line-height:1.15}
.item .tag{font-size:12.5px;font-weight:700;color:var(--brand-muted)}
.item p{font-size:15px;line-height:1.6;color:var(--brand-muted)}
.on-dark .item p{color:var(--on-primary-muted)}
.item .go{margin-top:auto;padding-top:8px}
.btn-link{background:none;border:0;padding:0;font:600 14.5px var(--font-text);color:var(--brand-primary);text-decoration:underline;text-underline-offset:4px;cursor:pointer;text-align:left}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.stats .n{display:block;font-family:var(--font-display);font-size:clamp(36px,3.6vw,48px);line-height:1;color:var(--gold-deep)}
.stats .l{display:block;margin-top:6px;font-size:13.5px;color:var(--brand-muted)}
.on-dark .stats .n{color:var(--gold-light)}
.on-dark .stats .l{color:var(--on-primary-muted)}
.big-n{font-family:var(--font-display);font-size:clamp(56px,6vw,84px);line-height:.9;color:var(--brand-primary)}
.note{border-left:2px solid var(--gold);padding:4px 0 4px 16px;font-size:14.5px;line-height:1.55;max-width:44em}
.on-dark .note{color:var(--on-primary-muted)}
.chip{display:inline-block;padding:6px 9px;font-weight:600;font-size:12px;background:var(--brand-surface);color:var(--brand-text)}
.cta-band .split{align-items:end}
.prose{max-width:40em;display:flex;flex-direction:column;gap:16px}
.prose h2{font-family:var(--font-display);font-size:clamp(26px,2.6vw,34px);line-height:1.1;margin-top:20px}
.prose p{font-size:17px;line-height:1.7;color:var(--brand-muted)}
.prose ul li{padding:8px 0;border-top:1px solid var(--brand-line);font-size:16px;color:var(--brand-muted)}
.book{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,5vw,72px);align-items:start}
.cal{min-height:640px;background:var(--white);border:1px solid var(--brand-line)}
/* Gated pages (password shell) */
.gate{min-height:100vh;display:grid;place-items:center;padding:48px var(--gutter)}
.gate-in{max-width:640px;width:100%;gap:22px}
.facts-strip{display:flex;flex-wrap:wrap;gap:10px 28px;font-family:var(--font-data);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--gold-light)}
.prog-panel{background:var(--brand-surface);padding:clamp(20px,2.4vw,28px)}
.bg-surface .prog-panel{background:var(--white)}
.invest{margin-top:8px;padding-top:14px;border-top:1px solid var(--brand-line);display:flex;flex-direction:column;gap:6px}
.invest p{font-size:15px;line-height:1.55;color:var(--brand-text)}
/* Cross-brand panels (ecosystem page): fixed brand colours by design */
.xpanel{padding:clamp(24px,3vw,40px);display:flex;flex-direction:column;gap:18px;color:#fff}
.xpanel--tpp{background:#0A1628}
.xpanel--psh{background:#0D4F4F}
.xpanel .k{font-size:13px;font-weight:700;color:var(--gold-light)}
.xpanel p{color:rgba(255,255,255,.78);font-size:15.5px;line-height:1.6}
.xpanel .stats{grid-template-columns:repeat(3,minmax(0,1fr));padding-block:16px;border-block:1px solid rgba(255,255,255,.14)}
.xpanel .stats .n{color:var(--gold-light);font-size:36px}
.xpanel .stats .l{color:rgba(255,255,255,.72)}
.xpanel .btn{align-self:flex-start;margin-top:auto}
.btn--psh{background:#0D4F4F;color:#fff}
.btn--psh:hover{background:#146A6A}

/* ---------- Responsive: three breakpoints only ---------- */
@media (max-width:1100px){
  .nav-links a:not(.btn){display:none}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .book{grid-template-columns:minmax(0,1fr)}
  .book .cal-col{order:-1}
}
@media (max-width:820px){
  .split,.split--even,.split--wide,.head{grid-template-columns:minmax(0,1fr)}
  .xbar-set,.xbar-hub{display:none}
  .xbar-m{display:block;width:100%}
  .xbar-in{display:block}
  .nav-in{min-height:60px}
  .nav-links{gap:10px}
  .nav-links .btn{min-height:44px;padding:10px 13px;font-size:13.5px}
  .menu{display:block}
  .ledger-row{grid-template-columns:minmax(0,1fr);gap:4px}
  .form .pair{grid-template-columns:minmax(0,1fr)}
  .sides-grid{grid-template-columns:minmax(0,1fr);gap:0}
  .side{display:flex;flex-direction:column;gap:10px;padding:14px 0;border-top:1px solid var(--brand-line)}
  .side + .side{border-left:0;padding-left:0}
  .logos{gap:16px;min-height:0}
  .logos img{max-height:28px}
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .xpanel .stats{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:560px){
  body{font-size:16px}
  .row{gap:var(--s4)}
  .row .btn{width:100%}
}