/* ==========================================================================
   Decode Modus — shared stylesheet
   Identity, scale and rules are documented in ../../design-brief.md
   Ink on bone, one accent, square corners, motion only where it means something.
   ========================================================================== */

@font-face{
  font-family:Archivo;
  src:url(../fonts/archivo.woff2) format('woff2-variations');
  font-weight:100 900;
  font-stretch:62% 125%;
  font-display:swap;
}
@font-face{
  font-family:'Geist Mono';
  src:url(../fonts/geist-mono.woff2) format('woff2');
  font-weight:100 900;
  font-display:swap;
}

:root{
  /* palette */
  --paper:#F2F1ED;
  --paper-2:#EAE8E2;
  --ink:#16181B;
  --ink-2:#22262B;
  --slate:#5B6067;
  --rule:#DCDAD3;
  --rule-strong:#C6C3B9;
  /* Field boundaries carry meaning, so they must clear WCAG 1.4.11 at 3:1
     against the input fill. --rule-strong is decorative only and does not. */
  --field-line:#8B8779;
  --cobalt:#1E3FCC;
  --cobalt-deep:#17309C;

  /* on the ink blocks */
  --on-ink:#EDECE7;
  --on-ink-dim:#9BA0A8;
  --on-ink-rule:#31363D;

  /* type scale, 1.25 minor third */
  --t-xs:.78rem;
  --t-sm:.875rem;
  --t-base:1rem;
  --t-md:1.0625rem;
  --t-lg:clamp(1.15rem,1.6vw,1.3rem);
  --t-xl:clamp(1.4rem,3vw,1.7rem);
  --t-2xl:clamp(1.7rem,4.2vw,2.2rem);
  --t-3xl:clamp(2rem,5.2vw,3rem);
  --t-4xl:clamp(2.35rem,6.4vw,3.9rem);

  /* rhythm */
  --pad:clamp(1.25rem,5vw,2.5rem);
  --wrap:1120px;
  --wrap-narrow:720px;
  --gap-sm:clamp(2rem,5vw,3rem);
  --gap:clamp(3.25rem,8vw,5.5rem);
  --gap-lg:clamp(4.5rem,11vw,8rem);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:Archivo,system-ui,-apple-system,'Helvetica Neue',sans-serif;
  font-variation-settings:'wdth' 100,'wght' 400;
  font-size:var(--t-base);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
p{margin:0}
h1,h2,h3,h4{
  margin:0;
  font-variation-settings:'wdth' 112,'wght' 500;
  letter-spacing:-.03em;
  line-height:1.1;
}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--cobalt);outline-offset:3px}

/* skip link ------------------------------------------------------------- */
.skip{
  position:absolute;left:-9999px;top:0;z-index:100;
  background:var(--ink);color:var(--on-ink);
  padding:.75rem 1rem;font-size:var(--t-sm);
}
.skip:focus{left:0}

/* layout ---------------------------------------------------------------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad)}
/* Narrow measure without breaking the left rail: the container keeps its full
   width so every section starts on the same line, only the content is capped. */
.wrap.narrow > *{max-width:var(--wrap-narrow)}
section{padding-block:var(--gap)}
.lede{color:var(--slate);font-size:var(--t-lg);max-width:56ch;line-height:1.55}
.body{color:var(--slate);max-width:66ch}
.body + .body{margin-top:1.15rem}
.body strong{color:var(--ink);font-variation-settings:'wdth' 100,'wght' 600}

/* the one small-caps mono label. Used sparingly, never above every heading. */
.label{
  font-family:'Geist Mono',ui-monospace,monospace;
  font-size:var(--t-xs);
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--slate);
}

/* header ---------------------------------------------------------------- */
.head{
  border-bottom:1px solid var(--rule);
  background:var(--paper);
  position:sticky;top:0;z-index:50;
}
.head-in{
  display:flex;align-items:center;justify-content:space-between;
  gap:1rem;height:68px;
}
.brand{
  display:flex;align-items:center;gap:.6rem;
  text-decoration:none;flex:none;
  font-variation-settings:'wdth' 112,'wght' 500;
  letter-spacing:-.025em;font-size:1.02rem;white-space:nowrap;
}
.brand .mark{flex:none}

/* The mark performs the idea: the displaced column slides into line on hover. */
.mark .shift{transition:transform .5s cubic-bezier(.16,1,.3,1)}
.brand:hover .mark .shift,
.brand:focus-visible .mark .shift{transform:translateY(-5px)}

.nav{display:none}
.nav ul{display:flex;align-items:center;gap:1.5rem}
.nav a{
  text-decoration:none;color:var(--slate);font-size:var(--t-sm);
  padding-block:.35rem;border-bottom:1px solid transparent;
  transition:color .16s ease,border-color .16s ease;
}
.nav a:hover{color:var(--ink)}
.nav a[aria-current=page]{color:var(--ink);border-bottom-color:var(--cobalt)}

.menu-btn{
  display:inline-flex;align-items:center;gap:.5rem;
  background:none;border:1px solid var(--rule-strong);
  color:var(--ink);font:inherit;font-size:var(--t-sm);
  padding:.45rem .7rem;cursor:pointer;
}
.menu-btn:hover{border-color:var(--ink)}
.menu-panel{display:none;border-bottom:1px solid var(--rule);background:var(--paper)}
.menu-panel.open{display:block}
.menu-panel ul{padding-block:.5rem 1.25rem}
.menu-panel a{
  display:block;text-decoration:none;color:var(--ink);
  padding:.7rem 0;border-bottom:1px solid var(--rule);font-size:var(--t-md);
}
.menu-panel li:last-child a{border-bottom:0}
.menu-panel a[aria-current=page]{color:var(--cobalt)}
/* Without JS the toggle cannot work, so the links are simply always visible. */
.no-js .menu-btn{display:none}
.no-js .menu-panel{display:block}

/* Declared last so it beats the base rules above at the same specificity. */
@media (min-width:1000px){
  .nav{display:block}
  .menu-btn,.no-js .menu-btn{display:none}
  .menu-panel,.no-js .menu-panel{display:none}
}

/* buttons --------------------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.85rem 1.35rem;border-radius:2px;
  font-size:var(--t-sm);font-variation-settings:'wdth' 100,'wght' 500;
  line-height:1.2;text-decoration:none;white-space:nowrap;
  border:1px solid var(--cobalt);background:var(--cobalt);color:#fff;
  transition:background .16s ease,border-color .16s ease,transform .1s ease;
}
.btn:hover{background:var(--cobalt-deep);border-color:var(--cobalt-deep)}
.btn:active{transform:translateY(1px)}
.btn svg{flex:none}
/* The outline is what identifies a ghost button as a control, so it uses the
   3:1 field line rather than the decorative hairline. */
.btn-ghost{
  background:none;color:var(--ink);border-color:var(--field-line);
}
.btn-ghost:hover{background:none;border-color:var(--ink);color:var(--ink)}
.btn-sm{padding:.55rem .9rem;font-size:var(--t-xs)}
.btn-row{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:2rem}

/* the quiet text link with a moving rule */
.tlink{
  display:inline-flex;align-items:center;gap:.45rem;
  color:var(--cobalt);text-decoration:none;
  font-size:var(--t-sm);font-variation-settings:'wdth' 100,'wght' 500;
  border-bottom:1px solid transparent;padding-bottom:2px;
  transition:border-color .16s ease;
}
.tlink:hover{border-bottom-color:var(--cobalt)}
.tlink svg{flex:none;transition:transform .18s cubic-bezier(.16,1,.3,1)}
.tlink:hover svg{transform:translateX(3px)}

/* page header ----------------------------------------------------------- */
.phead{padding-block:clamp(2.5rem,7vw,4.5rem) var(--gap-sm);border-bottom:1px solid var(--rule)}
.phead h1{font-size:var(--t-3xl);max-width:20ch}
.phead .lede{margin-top:1.35rem}
.phead .label{display:block;margin-bottom:1.1rem}

/* hero ------------------------------------------------------------------ */
.hero{padding-block:clamp(3rem,9vw,6rem) clamp(3rem,8vw,5rem)}
.hero h1{font-size:var(--t-4xl);max-width:15ch}
.hero .lede{margin-top:1.6rem;font-size:var(--t-xl);color:var(--ink);max-width:30ch;line-height:1.35}
.hero .body{margin-top:1.4rem;max-width:50ch}
@media (min-width:900px){
  .hero-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:4rem;align-items:end}
}
.hero-aside{margin-top:2.5rem}
@media (min-width:900px){.hero-aside{margin-top:0;padding-bottom:.4rem}}
.hero-aside dl{border-top:1px solid var(--ink)}
.hero-aside div{padding-block:.85rem;border-bottom:1px solid var(--rule)}
.hero-aside dt{font-size:var(--t-sm);font-variation-settings:'wdth' 100,'wght' 500}
.hero-aside dd{margin:.15rem 0 0;color:var(--slate);font-size:var(--t-sm)}

/* section heading ------------------------------------------------------- */
/* The heading gets its own measure in its own size, so a short one stays on a
   single line instead of orphaning the last word. */
.shead{margin-bottom:clamp(2rem,5vw,3rem)}
.shead h2{font-size:var(--t-2xl);max-width:20ch}
.shead .body{margin-top:1.1rem;max-width:48ch}

/* numbered editorial list (the three lines) ----------------------------- */
.lines{border-top:1px solid var(--ink)}
.lines li{border-bottom:1px solid var(--rule)}
.lines a{
  display:block;text-decoration:none;padding-block:clamp(1.6rem,3.5vw,2.2rem);
  transition:background .18s ease;
}
.lines a:hover{background:var(--paper-2)}
@media (min-width:800px){
  .lines-in{display:grid;grid-template-columns:2.5rem 15rem 1fr;gap:2rem;align-items:baseline}
}
.lines-in{display:grid;gap:.5rem}
.lines .n{
  font-family:'Geist Mono',ui-monospace,monospace;font-size:var(--t-xs);
  color:var(--slate);letter-spacing:.08em;
}
.lines h3{font-size:var(--t-xl)}
.lines p{color:var(--slate);max-width:52ch;font-size:var(--t-sm)}
.lines .go{
  display:inline-flex;align-items:center;gap:.4rem;margin-top:.9rem;
  color:var(--cobalt);font-size:var(--t-sm);
  font-variation-settings:'wdth' 100,'wght' 500;
}
.lines .go svg{transition:transform .18s cubic-bezier(.16,1,.3,1)}
.lines a:hover .go svg{transform:translateX(3px)}

/* full bleed ink block. Two per page maximum, only for plain fact. ------- */
.ink{background:var(--ink);color:var(--on-ink)}
.ink h2,.ink h3{color:var(--on-ink)}
.ink .body,.ink .lede{color:var(--on-ink-dim)}
.ink .body strong{color:var(--on-ink)}
.ink .label{color:var(--on-ink-dim)}

.figs{display:grid;gap:2.25rem;margin-top:clamp(2.25rem,5vw,3rem)}
@media (min-width:600px){.figs{grid-template-columns:repeat(2,1fr);gap:2.5rem 2rem}}
@media (min-width:960px){.figs{grid-template-columns:repeat(4,1fr)}}
.fig b{
  display:block;font-family:'Geist Mono',ui-monospace,monospace;
  font-weight:500;font-size:clamp(2.1rem,5vw,2.7rem);
  letter-spacing:-.04em;line-height:1;color:var(--on-ink);
}
.fig span{display:block;margin-top:.7rem;color:var(--on-ink-dim);font-size:var(--t-sm);max-width:24ch}
.src{
  margin-top:clamp(2.25rem,5vw,3rem);padding-top:1.25rem;
  border-top:1px solid var(--on-ink-rule);
  color:var(--on-ink-dim);font-size:var(--t-xs);max-width:70ch;
}

/* the stage ladder (the method) ----------------------------------------- */
.ladder{border-top:1px solid var(--ink);counter-reset:stage}
.ladder > li{
  border-bottom:1px solid var(--rule);
  padding-block:clamp(1.75rem,4vw,2.5rem);
}
@media (min-width:820px){
  .stage{display:grid;grid-template-columns:3.5rem 16rem 1fr;gap:2rem;align-items:start}
}
.stage{display:grid;gap:.6rem}
.stage .n{
  font-family:'Geist Mono',ui-monospace,monospace;font-size:var(--t-xs);
  color:var(--cobalt);letter-spacing:.08em;padding-top:.35rem;
}
.stage h3{font-size:var(--t-lg)}
.stage .body{font-size:var(--t-sm);max-width:60ch}
.stage .note{
  margin-top:.9rem;padding-left:.9rem;border-left:2px solid var(--rule-strong);
  color:var(--slate);font-size:var(--t-sm);max-width:58ch;
}
.stage .note b{font-variation-settings:'wdth' 100,'wght' 600;color:var(--ink)}

/* two column prose ------------------------------------------------------ */
.cols{display:grid;gap:clamp(2rem,5vw,3rem)}
@media (min-width:840px){.cols{grid-template-columns:repeat(2,1fr);gap:3.5rem}}
.cols h3{font-size:var(--t-lg);margin-bottom:.8rem}

/* definition rows ------------------------------------------------------- */
.rows{border-top:1px solid var(--rule)}
.rows > li{
  padding-block:1.35rem;border-bottom:1px solid var(--rule);
  display:grid;gap:.4rem;
}
@media (min-width:760px){
  .rows > li{grid-template-columns:16rem 1fr;gap:2rem;align-items:baseline}
}
.rows dt,.rows .k{
  font-variation-settings:'wdth' 100,'wght' 500;font-size:var(--t-sm);
}
.rows dd,.rows .v{margin:0;color:var(--slate);font-size:var(--t-sm);max-width:60ch}

/* the refusals: a plain list that carries weight through spacing --------- */
.refuse{display:grid;gap:1.5rem;margin-top:2rem}
@media (min-width:760px){.refuse{grid-template-columns:repeat(2,1fr);gap:2rem 3rem}}
.refuse li{padding-left:1.5rem;position:relative;color:var(--slate);font-size:var(--t-sm);max-width:46ch}
.refuse li::before{
  content:"";position:absolute;left:0;top:.62em;
  width:.6rem;height:1px;background:var(--cobalt);
}
.refuse b{display:block;color:var(--ink);font-variation-settings:'wdth' 100,'wght' 500;margin-bottom:.25rem}
.ink .refuse li{color:var(--on-ink-dim)}
.ink .refuse b{color:var(--on-ink)}
/* Cobalt disappears against the ink. The marker steps up to stay readable. */
.ink .refuse li::before{background:#6E8BFF}

/* portrait split. Used once on the site. -------------------------------- */
.who{display:grid;gap:2rem;align-items:center}
@media (min-width:760px){.who{grid-template-columns:230px 1fr;gap:3.5rem}}
/* The portrait is a real cutout with an alpha channel, so it sits straight on
   the block. No blend mode: multiply turns the transparent pixels black. */
.portrait{background:var(--paper-2);border:1px solid var(--rule);overflow:hidden}
.portrait img{width:100%;display:block}
.who h2{font-size:var(--t-2xl)}
.who .name{
  font-variation-settings:'wdth' 100,'wght' 500;font-size:var(--t-md);
  margin-bottom:.25rem;
}
.who .role{color:var(--slate);font-size:var(--t-sm);margin-bottom:1.5rem;max-width:38ch}

/* disclosure (FAQ) ------------------------------------------------------ */
.faq{border-top:1px solid var(--rule)}
.faq details{border-bottom:1px solid var(--rule)}
.faq summary{
  padding-block:1.25rem;cursor:pointer;list-style:none;
  display:flex;align-items:baseline;justify-content:space-between;gap:1.5rem;
  font-variation-settings:'wdth' 100,'wght' 500;font-size:var(--t-md);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";flex:none;color:var(--cobalt);
  font-family:'Geist Mono',ui-monospace,monospace;font-size:1.05rem;
}
.faq details[open] summary::after{content:"\2013"}
.faq summary:hover{color:var(--cobalt)}
.faq .a{padding-bottom:1.4rem;color:var(--slate);font-size:var(--t-sm);max-width:62ch}
.faq .a p + p{margin-top:.9rem}

/* contact --------------------------------------------------------------- */
.channels{display:grid;gap:1px;background:var(--rule);border:1px solid var(--rule);margin-bottom:var(--gap-sm)}
@media (min-width:720px){.channels{grid-template-columns:repeat(3,1fr)}}
.channel{background:var(--paper);padding:clamp(1.4rem,3vw,1.9rem)}
.channel h3{font-size:var(--t-md);margin-bottom:.45rem}
.channel p{color:var(--slate);font-size:var(--t-sm);margin-bottom:1.1rem}
.channel a.val{
  color:var(--cobalt);text-decoration:none;font-size:var(--t-sm);
  border-bottom:1px solid transparent;
  font-variation-settings:'wdth' 100,'wght' 500;
}
.channel a.val:hover{border-bottom-color:var(--cobalt)}

form .field{display:grid;gap:.4rem;margin-bottom:1.25rem}
form label{font-size:var(--t-sm);font-variation-settings:'wdth' 100,'wght' 500}
form .hint{font-size:var(--t-xs);color:var(--slate)}
form input,form select,form textarea{
  font:inherit;font-size:var(--t-sm);
  padding:.7rem .8rem;border:1px solid var(--field-line);border-radius:0;
  background:#FBFAF8;color:var(--ink);width:100%;
}
form input:hover,form select:hover,form textarea:hover{border-color:var(--ink)}
form input:focus-visible,form select:focus-visible,form textarea:focus-visible{
  outline:2px solid var(--cobalt);outline-offset:1px;border-color:var(--cobalt);
}
form textarea{min-height:7rem;resize:vertical}
/* Inline caret, so a select never reads as a plain text box. Data URI keeps the
   page self contained: no external request. */
form select{
  appearance:none;padding-right:2.25rem;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5l5-5' fill='none' stroke='%235B6067' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right .85rem center;
}
.send{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center;margin-top:1.75rem}
.send-note{font-size:var(--t-xs);color:var(--slate);margin-top:1rem;max-width:52ch}

/* legal pages ----------------------------------------------------------- */
.legal h2{font-size:var(--t-lg);margin-top:2.5rem;margin-bottom:.75rem}
.legal h2:first-of-type{margin-top:0}
.legal p,.legal li{color:var(--slate);font-size:var(--t-sm);max-width:68ch}
.legal p + p{margin-top:.9rem}
.legal ul{margin-top:.75rem;display:grid;gap:.5rem}
.legal ul li{padding-left:1.25rem;position:relative}
.legal ul li::before{content:"";position:absolute;left:0;top:.65em;width:.5rem;height:1px;background:var(--rule-strong)}
.legal a{color:var(--cobalt)}
.updated{color:var(--slate);font-size:var(--t-xs);margin-top:3rem;padding-top:1.25rem;border-top:1px solid var(--rule)}

/* closing call ---------------------------------------------------------- */
.close h2{font-size:var(--t-2xl);max-width:20ch}
.close .body{margin-top:1.2rem}

/* footer ---------------------------------------------------------------- */
.foot{background:var(--ink);color:var(--on-ink-dim);padding-block:clamp(3rem,7vw,4.5rem) 2.5rem}
.foot a{color:var(--on-ink-dim);text-decoration:none;transition:color .16s ease}
.foot a:hover{color:var(--on-ink)}
.foot-grid{display:grid;gap:2.5rem}
@media (min-width:760px){.foot-grid{grid-template-columns:1.5fr 1fr 1fr;gap:3rem}}
.foot h4{
  font-size:var(--t-xs);letter-spacing:.14em;text-transform:uppercase;
  font-family:'Geist Mono',ui-monospace,monospace;font-variation-settings:normal;
  color:var(--on-ink-dim);margin-bottom:1rem;font-weight:400;letter-spacing:.14em;
}
.foot ul{display:grid;gap:.7rem}
.foot li{font-size:var(--t-sm)}
.foot .brand{color:var(--on-ink);margin-bottom:.9rem}
.foot .blurb{font-size:var(--t-sm);max-width:34ch;color:var(--on-ink-dim)}
.foot-base{
  margin-top:clamp(2.5rem,6vw,3.5rem);padding-top:1.5rem;
  border-top:1px solid var(--on-ink-rule);
  display:flex;flex-wrap:wrap;gap:.6rem 1.75rem;justify-content:space-between;
  font-size:var(--t-xs);
}
.foot-legal{max-width:62ch;color:var(--on-ink-dim)}
.foot-links{display:flex;flex-wrap:wrap;gap:1.25rem}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;transition-duration:.001ms!important;
  }
}