/* ==================================================================
   PINELOOP — single self-contained file.
   Palette and typefaces are fixed by the brief. Do not substitute.
   Cleared = posted / resolved.  Flag = exception only.
   ================================================================== */
:root{
  --paper:#EFF0EC;
  --ink:#10161A;
  --steel:#5A6B72;
  --cleared:#155C40;
  --flag:#C0552F;

  /* Signal Pine — a brighter shade for button fills (draws the eye,
     click targets), a deeper shade (--cleared, above) for links, diagram
     accents, and anything read as body text at length. */
  --cta:#1C7350;
  --cta-hover:#134730;

  --rule:rgba(90,107,114,.32);
  --rule-soft:rgba(90,107,114,.18);
  --wash:rgba(90,107,114,.06);

  --font-display:'Archivo','Helvetica Neue',Helvetica,Arial,sans-serif;
  --font-body:'Public Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif;
  --font-mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --gutter:clamp(20px,5vw,64px);
  --max:1120px;
  --band:clamp(54px,7vw,92px);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--font-body);font-size:18px;line-height:1.6;font-weight:400;
  -webkit-font-smoothing:antialiased;
}
[hidden]{display:none !important}
svg{max-width:100%}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:700;margin:0;letter-spacing:-.028em;line-height:1.05}
h1{font-size:clamp(2.3rem,5vw,3.9rem);letter-spacing:-.038em;line-height:1}
h2{font-size:clamp(1.7rem,3vw,2.5rem);letter-spacing:-.032em}
h3{font-size:1.22rem;letter-spacing:-.018em;line-height:1.2}
h4{font-size:1rem;letter-spacing:-.012em}
p{margin:0 0 1.05em}
p:last-child{margin-bottom:0}
.measure{max-width:64ch}
.lead{font-size:clamp(1.08rem,1.45vw,1.3rem);line-height:1.5;max-width:52ch}
.w-full{max-width:none !important}

.mono{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;color:var(--steel);font-weight:400}
.num{color:var(--ink);margin-right:16px}

a{color:var(--cleared);text-decoration:none;border-bottom:1px solid rgba(21,92,64,.4)}
a:hover{border-bottom-color:var(--cleared)}
:focus-visible{outline:2px solid var(--cleared);outline-offset:3px}

.wrap{max-width:var(--max);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter);width:100%}
.band{padding-top:var(--band);padding-bottom:var(--band);border-top:1px solid var(--rule)}
.band--open{border-top:0}
.sec-head{margin-bottom:clamp(26px,3.5vw,40px)}
.sec-head .mono{display:block;margin-bottom:20px}
.sec-head h2{max-width:none}
.sec-head h2 a{color:inherit;text-decoration:none;border-bottom:0;display:inline-flex;align-items:center;gap:14px}
.sec-head h2 a:hover{color:var(--cleared)}
.sec-head h2 a .go{font-family:var(--font-mono);font-size:.55em;color:var(--steel);transition:transform .15s ease}
.sec-head h2 a:hover .go{color:var(--cleared);transform:translateX(4px)}

/* ---------- the pull statement ---------- */
.statement{
  font-family:var(--font-display);font-weight:700;
  font-size:clamp(1.35rem,2.5vw,2rem);line-height:1.14;letter-spacing:-.03em;
  margin:clamp(34px,4.5vw,56px) 0 0;padding-top:22px;
  border-top:2px solid var(--cleared);
  text-align:center;
}

/* ---------- header ---------- */
.site-head{position:sticky;top:0;z-index:60;background:var(--paper);border-bottom:1px solid transparent}
.site-head.is-stuck{border-bottom-color:var(--rule)}
.head-inner{display:flex;align-items:center;gap:clamp(12px,2vw,26px);height:72px}
.wordmark{font-family:var(--font-display);font-weight:700;font-size:1.3rem;letter-spacing:-.045em;color:var(--ink);border:0;line-height:1}
.wm-oo{color:var(--cleared)}
.nav{display:flex;align-items:center;gap:clamp(14px,2vw,28px);margin-left:auto}
.nav a{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.13em;text-transform:uppercase;color:var(--steel);border:0;padding:8px 0}
.nav a:hover{color:var(--ink)}
.nav a[aria-current="page"]{color:var(--ink);box-shadow:inset 0 -1px 0 var(--ink)}
.head-actions{display:flex;align-items:center;gap:10px}

.btn{
  display:inline-block;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--paper);background:var(--cta);border:1px solid var(--cta);border-radius:0;
  padding:13px 20px;line-height:1;cursor:pointer;
}
.btn:hover{background:var(--cta-hover);border-color:var(--cta-hover);color:var(--paper)}
.btn--ghost{background:transparent;color:var(--ink)}
.btn--ghost:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.nav-toggle{display:none}

@media (max-width:880px){
  .nav-toggle{display:inline-block;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;background:transparent;border:1px solid var(--rule);border-radius:0;color:var(--ink);padding:12px 13px;cursor:pointer}
  .head-actions{margin-left:auto}
  .nav{display:none;position:absolute;left:0;right:0;top:72px;margin-left:0;background:var(--paper);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);flex-direction:column;align-items:stretch;gap:0;padding:6px var(--gutter) 20px}
  .nav.is-open{display:flex}
  .nav a{padding:15px 0;border-bottom:1px solid var(--rule-soft);font-size:.78rem}
  .nav a:last-child{border-bottom:0}
  .nav a[aria-current="page"]{box-shadow:none}
  .only-wide{display:none}
}
@media (max-width:400px){.btn{padding:12px 13px}.wordmark{font-size:1.15rem}}

/* ---------- hero ---------- */
.hero{padding-top:clamp(44px,6vw,76px);padding-bottom:clamp(48px,6vw,84px)}
.hero--centered{
  min-height:calc(100vh - 72px);
  min-height:calc(100svh - 72px);
  display:flex;
  align-items:center;
  justify-content:center;
}
.hero--centered .hero__grid{
  width:100%;
  display:flex;
  flex-direction:column;
  align-items:center;
  text-align:center;
}
.hero--centered h1{font-size:clamp(1.05rem,5.6vw,3.6rem);margin:0 auto 1.2rem;max-width:none;font-family:'IBM Plex Sans','Helvetica Neue',Helvetica,Arial,sans-serif;font-weight:700;letter-spacing:-.01em}
.hero--centered h1 .line{display:block;white-space:nowrap}
.hero--centered h1 .accent-italic{font-family:'Fraunces','Georgia',serif;font-style:italic;font-weight:500;color:var(--flag);letter-spacing:0}
.hero--centered .lead{margin:0 auto 2.2rem;max-width:52ch}
.hero--centered .cta-row{justify-content:center}
@media (max-width:900px){
  .hero--centered .lead{max-width:56ch}
}
.cta-row{display:flex;flex-wrap:wrap;align-items:center;gap:20px}
.cta-row .quiet{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--steel);border-bottom:1px solid var(--rule)}
.cta-row .quiet:hover{color:var(--ink);border-bottom-color:var(--ink)}


/* ---------- diagrams ---------- */
.dia{margin:0}
.dia > svg{display:block;width:100%;height:auto}
.dia text{font-family:var(--font-mono);letter-spacing:.09em;fill:var(--steel);font-size:15px}
.dia .t-lg{font-size:16px;letter-spacing:.14em}
.dia .t-ink{fill:var(--ink)}
.dia .t-key{font-size:14px;letter-spacing:.12em}
.dia .t-md{font-size:14px;letter-spacing:.09em}
.dia .t-sm{font-size:12px;letter-spacing:.10em}
.dia .t-th{font-size:11px;letter-spacing:.12em}
.dia .t-tb{font-size:12px;letter-spacing:.06em}
.s{fill:none;stroke:var(--steel);stroke-width:1.25;stroke-linecap:square;stroke-linejoin:miter}
.s-box{fill:var(--paper);stroke:var(--steel);stroke-width:1.25}
.c{fill:none;stroke:var(--cleared);stroke-width:1.5;stroke-linecap:square}
.cf{fill:var(--cleared);stroke:none}
.f{fill:none;stroke:var(--flag);stroke-width:1.5;stroke-linecap:square}
.ff{fill:var(--flag);stroke:none}
.sf{fill:var(--steel);stroke:none}
.s-dash{stroke-dasharray:5 4}
.pulse{stroke-width:3;stroke-linecap:round}
.pulse-c{stroke-dasharray:16 143;animation:flowC 3.6s linear infinite}
.pulse-f{stroke-dasharray:12 159;animation:flowF 3.9s linear infinite}
@keyframes flowC{to{stroke-dashoffset:-159}}
@keyframes flowF{to{stroke-dashoffset:-171}}


/* ---------- line marks ---------- */
.mark{display:block;width:44px;height:44px;margin-bottom:20px}

/* ---------- problem columns ---------- */
.cols2{display:grid;grid-template-columns:1fr 1fr;gap:clamp(22px,3.5vw,48px);margin-top:2.4rem}
.problem-grid{align-items:start}
.problem-grid .sec-head h2{line-height:1.4}
.problem-grid .sec-head h2 .accent-pine{color:var(--cleared);font-style:italic}
.col-item{background:var(--paper);padding:28px 32px;box-shadow:0 0 24px rgba(16,22,26,.16),0 0 4px rgba(16,22,26,.08)}
.col-item h3{margin-bottom:.5rem;font-size:1.1rem}
.col-item p{font-size:1rem;margin:0}
@media (max-width:700px){
  .cols2{grid-template-columns:1fr;gap:26px}
  .problem-grid .sec-head h2{line-height:1.15}
}

/* ---------- layers ---------- */
.layers{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--ink)}
.layer{padding:24px 30px 4px 0}
.layer + .layer{border-left:1px solid var(--rule);padding-left:30px}
.layer:last-child{padding-right:0}
.layer .mono{display:block;margin-bottom:14px}
.layer h3{margin-bottom:.6rem}
.layer p{font-size:1rem;margin:0}
@media (max-width:880px){
  .layers{grid-template-columns:1fr;border-top:0}
  .layer{border-top:1px solid var(--ink);padding:22px 0 30px}
  .layer + .layer{border-left:0;padding-left:0}
}

/* ---------- flow diagram (HTML, so the labels stay legible at any width) ---------- */
.flow{--fgap:26px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--fgap);margin-top:2.6rem}
.step{border:1px solid var(--rule);border-left:2px solid var(--steel);padding:18px 18px 20px;position:relative}
.step .mono{display:block;margin-bottom:12px}
.step h4{margin-bottom:.45rem}
.step p{font-size:.92rem;color:var(--steel);margin:0}
.step--exception{border-left-color:var(--flag)}
.step--cleared{border-left-color:var(--cleared)}
.step:not(:last-child)::after{
  content:"";position:absolute;top:50%;right:calc(-1 * var(--fgap));
  width:var(--fgap);height:0;border-top:1px solid var(--steel);
}
.step--exception::after,.step--handoff::after{border-top-color:var(--flag)}
.step--resolved::after{border-top-color:var(--cleared)}
@media (max-width:900px){
  .flow{grid-template-columns:1fr 1fr}
  .step:nth-child(2)::after{display:none}
}
@media (max-width:600px){
  .flow{grid-template-columns:1fr;--fgap:22px}
  .step:nth-child(2)::after{display:block}
  .step:not(:last-child)::after{
    top:auto;bottom:calc(-1 * var(--fgap));right:auto;left:24px;
    width:0;height:var(--fgap);border-top:0;border-left:1px solid var(--steel);
  }
  .step--exception::after,.step--handoff::after{border-left-color:var(--flag)}
  .step--resolved::after{border-left-color:var(--cleared)}
}
.flow-back{
  margin-top:calc(var(--fgap) + 4px);border-top:1px solid var(--rule);
  border-left:2px solid var(--cleared);padding:16px 18px;
}
.flow-back p{margin:0;font-size:.96rem}

.small-note{margin-top:2rem;padding-top:18px;border-top:1px solid var(--rule);font-size:1rem;color:var(--steel);max-width:58ch}

/* ---------- process cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--rule);border-left:1px solid var(--rule)}
a.card{display:block;border-right:1px solid var(--rule);border-bottom:1px solid var(--rule);padding:26px 26px 30px;border-radius:0;color:var(--ink);position:relative}
a.card:hover,a.card:focus-visible{background:var(--wash)}
a.card:hover h3{color:var(--cleared)}
.card h3{font-size:1.12rem;margin-bottom:.45rem}
.card p{font-size:.98rem;margin:0}
.card .go{position:absolute;right:22px;bottom:26px;font-family:var(--font-mono);font-size:.72rem;color:var(--steel)}
a.card:hover .go{color:var(--cleared)}
@media (max-width:880px){.cards{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.cards{grid-template-columns:1fr}}

/* ---------- inner pages ---------- */
.page-head{padding-top:clamp(40px,6vw,72px);padding-bottom:clamp(28px,4vw,44px)}
.page-head .mono{display:block;margin-bottom:22px}
.page-head h1{font-size:clamp(2rem,4vw,3.1rem);max-width:16ch;margin-bottom:1.1rem}
.page-head .lead{max-width:56ch}

.deep{display:grid;grid-template-columns:minmax(0,.62fr) minmax(0,2fr);gap:clamp(20px,4vw,52px);padding-top:28px;border-top:1px solid var(--ink)}
.deep + .deep{margin-top:clamp(36px,5vw,60px)}
.deep h3{margin-bottom:.8rem}
.deep p{max-width:62ch}
@media (max-width:820px){
  .deep{grid-template-columns:1fr;gap:16px}
  .deep > div:first-child{display:flex;align-items:center;gap:16px}
  .deep .mark{margin-bottom:0;flex:0 0 auto}
}
.keylist{list-style:none;margin:1.5rem 0 0;padding:0;border-top:1px solid var(--rule-soft)}
.keylist li{padding:11px 0;border-bottom:1px solid var(--rule-soft);font-size:.98rem;max-width:62ch}
.keylist strong{font-weight:500}
.keylist span{color:var(--steel)}

.phases{border-top:1px solid var(--ink)}
.phase{display:grid;grid-template-columns:minmax(0,.62fr) minmax(0,2fr);gap:clamp(20px,4vw,52px);padding:26px 0;border-bottom:1px solid var(--rule)}
.phase h3{margin-bottom:.5rem}
.phase p{max-width:60ch;margin:0}
@media (max-width:820px){
  .phase{grid-template-columns:1fr;gap:14px}
  .phase > div:first-child{display:flex;align-items:center;gap:16px}
  .phase .mark{margin-bottom:0;flex:0 0 auto}
}

/* ---------- contact form ---------- */
.form-doc{border:1px solid var(--ink);max-width:640px}
.form-doc__bar{display:flex;justify-content:space-between;align-items:center;gap:16px;border-bottom:1px solid var(--ink);padding:14px 20px}
.form-doc__body{padding:26px 20px 28px}
.field{margin-bottom:22px}
.field label{display:block;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.13em;text-transform:uppercase;color:var(--steel);margin-bottom:9px}
.field input,.field textarea{width:100%;font-family:var(--font-body);font-size:1rem;color:var(--ink);background:var(--paper);border:1px solid var(--steel);border-radius:0;padding:12px 14px;line-height:1.5}
.field textarea{min-height:118px;resize:vertical;display:block}
.field input:focus,.field textarea:focus{outline:2px solid var(--cleared);outline-offset:0;border-color:var(--cleared)}
.field.has-error input,.field.has-error textarea{border-color:var(--flag);border-width:2px;padding:11px 13px}
.err{display:none;font-size:.94rem;color:var(--ink);border-left:2px solid var(--flag);padding:2px 0 2px 11px;margin:10px 0 0}
.field.has-error .err{display:block}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media (max-width:600px){.field-row{grid-template-columns:1fr;gap:0}}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:4px}
.form-foot .mono{max-width:34ch;line-height:1.7}
.confirm{border:1px solid var(--cleared);padding:26px 20px;max-width:640px}
.confirm h3{color:var(--cleared);margin-bottom:.6rem}
.confirm p{max-width:52ch;margin:0}

.closing h2{max-width:none;margin-bottom:1rem}
.closing p{max-width:46ch;margin-bottom:1.9rem}

.site-foot{border-top:1px solid var(--ink);padding:36px 0 44px}
.foot-inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:24px}
.foot-nav{display:flex;flex-wrap:wrap;gap:10px 26px}
.foot-nav a{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--steel);border:0}
.foot-nav a:hover{color:var(--ink)}

.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--paper);padding:12px 16px;z-index:100;border:0;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase}
.skip:focus{left:0}

.js .reveal{opacity:0;transform:translateY(8px);transition:opacity .5s ease,transform .5s ease}
.js .reveal.is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  .js .reveal{opacity:1;transform:none;transition:none}
  .trace-anim{transition:none !important}
  .pulse{animation:none !important;stroke-dasharray:none;stroke-width:0}
}


/* ---------- contact form: honeypot + failure state ---------- */
.hp{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.confirm--fail{border-color:var(--flag)}
.confirm--fail h3{color:var(--flag)}
.btn[disabled]{opacity:.55;cursor:progress}