/* Left Seat — Quiet Command, Instrumented
   Ivory editorial base · dark instrument insets · one green signal */

/* ---------- fonts (self-hosted) ---------- */
@font-face{font-family:'Fraunces';src:url('fonts/fraunces-v38-latin-regular.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'Fraunces';src:url('fonts/fraunces-v38-latin-600.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:'Fraunces';src:url('fonts/fraunces-v38-latin-italic.woff2') format('woff2');font-weight:400;font-style:italic;font-display:swap}
@font-face{font-family:'Archivo';src:url('fonts/archivo-v25-latin-regular.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'Archivo';src:url('fonts/archivo-v25-latin-500.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:'Archivo';src:url('fonts/archivo-v25-latin-700.woff2') format('woff2');font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:'Archivo';src:url('fonts/archivo-v25-latin-800.woff2') format('woff2');font-weight:800;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Mono';src:url('fonts/ibm-plex-mono-v20-latin-regular.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Mono';src:url('fonts/ibm-plex-mono-v20-latin-500.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap}

/* ---------- tokens ---------- */
:root{
  --paper:#F6F3EC;
  --paper-2:#EFEAE0;
  --ink:#14181D;
  --ink-soft:#4A5158;
  --steel:#6A7380;
  --line:#D9D2C4;

  --green-deep:#0F6B4F;
  --green-avionics:#4ADE96;
  --amber:#8A5410;

  --panel:#0B1220;
  --panel-2:#111B2E;
  --panel-line:#1E2C45;
  --panel-ink:#E9EFF8;
  --panel-muted:#93A3BD;

  --serif:'Fraunces',Georgia,serif;
  --sans:'Archivo',-apple-system,'Segoe UI',sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,monospace;

  --radius:4px;
  --wrap:1120px;
  --measure:38rem;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
/* faint paper grain — code-drawn, no raster */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23g)'/%3E%3C/svg%3E");
}
body>*{position:relative;z-index:1}
::selection{background:var(--green-deep);color:var(--paper)}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px}

h1,h2,h3.serif{font-family:var(--serif);font-weight:600;letter-spacing:-.015em}
h1{font-size:clamp(44px,6.5vw,76px);line-height:1.04;max-width:15ch}
h1 em{font-style:italic;font-weight:400;color:var(--green-deep)}
h2{font-size:clamp(30px,4vw,44px);line-height:1.12;max-width:22ch}
.lead{margin-top:18px;color:var(--ink-soft);font-size:18px;max-width:var(--measure)}

a{color:inherit}
p a{color:var(--green-deep);text-decoration-thickness:1px;text-underline-offset:3px}

/* ---------- mono voice ---------- */
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:12px;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;color:var(--green-deep);
}
.kicker::before{content:"";width:22px;height:2px;background:var(--green-deep)}
.mono{font-family:var(--mono)}

/* ---------- horizon rule ---------- */
.horizon{position:relative;height:1px;background:var(--line);margin:56px 0 0}
.horizon .bug{
  position:absolute;top:-3px;left:12%;width:7px;height:7px;border-radius:50%;
  background:var(--green-deep);
  transition:left 1.1s cubic-bezier(.2,.7,.2,1);
}
.horizon[data-armed] .bug{left:0}

/* ---------- skip link ---------- */
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--paper);padding:10px 16px;z-index:50;border-radius:0 0 4px 0}
.skip:focus{left:0}

/* ---------- nav ---------- */
nav{border-bottom:1px solid var(--line);background:var(--paper)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:20px;padding-bottom:20px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none}
.brand svg{width:26px;height:26px;color:var(--green-deep)}
.wordmark{font-weight:800;letter-spacing:.13em;font-size:17px}
.wordmark span{color:var(--green-deep)}
.nav-links{display:flex;align-items:center;gap:26px;font-size:14.5px;font-weight:500}
.nav-links a{text-decoration:none;color:var(--ink-soft)}
.nav-links a:hover{color:var(--ink)}
.nav-cta{
  background:var(--ink);color:var(--paper);text-decoration:none;font-weight:700;font-size:14px;
  padding:11px 20px;border-radius:var(--radius);transition:background .15s ease,transform .12s ease;
}
.nav-cta:hover{background:var(--green-deep);transform:translateY(-1px)}
@media(max-width:720px){.nav-links a:not(.nav-cta){display:none}}

/* ---------- buttons ---------- */
.btn{
  display:inline-block;background:var(--ink);color:var(--paper);text-decoration:none;
  font-weight:700;font-size:16px;padding:15px 28px;border-radius:var(--radius);
  transition:background .15s ease,transform .12s ease;
}
.btn:hover{background:var(--green-deep);transform:translateY(-1px)}
.btn-ghost{
  display:inline-block;color:var(--ink);text-decoration:none;font-weight:600;font-size:15px;
  border:1px solid var(--ink);padding:14px 24px;border-radius:var(--radius);
  transition:border-color .15s ease,color .15s ease;
}
.btn-ghost:hover{border-color:var(--green-deep);color:var(--green-deep)}
.micro{margin-top:14px;font-size:13.5px;color:var(--steel)}

/* ---------- sections ---------- */
section{padding:92px 0}
.band{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- hero ---------- */
header.hero{padding:104px 0 0}
.hero .sub{margin-top:26px;font-size:19px;color:var(--ink-soft);max-width:var(--measure)}
.hero-ctas{margin-top:40px;display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-bottom{padding-bottom:72px}
.credline{margin-top:56px;font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;color:var(--steel)}

/* ---------- definition strip ---------- */
.define p{font-size:17.5px;color:var(--ink-soft);max-width:46rem;border-left:3px solid var(--green-deep);padding-left:22px}
.define b{color:var(--ink)}
.define .term{color:var(--green-deep);font-weight:700}

/* ---------- problem rows ---------- */
.problem-list{margin-top:40px;max-width:46rem}
.problem-list .row{display:flex;gap:18px;align-items:baseline;padding:20px 0;border-top:1px solid var(--line)}
.problem-list .row:last-child{border-bottom:1px solid var(--line)}
.problem-list .tag{font-family:var(--mono);font-size:11.5px;color:var(--amber);letter-spacing:.1em;white-space:nowrap;font-weight:500}
.problem-list p{color:var(--ink-soft);font-size:16px}
.problem-list p b{color:var(--ink)}

/* ---------- service cards ---------- */
.cards{margin-top:48px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 28px;display:flex;flex-direction:column;gap:13px;
  transition:border-color .15s ease;
}
.card:hover{border-color:var(--ink)}
.card .num{font-family:var(--mono);color:var(--steel);font-size:12px;letter-spacing:.14em;display:flex;justify-content:space-between;align-items:center}
.card .num svg{width:24px;height:24px;color:var(--green-deep)}
.card h3{font-family:var(--serif);font-size:23px;font-weight:600}
.card .what{color:var(--green-deep);font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;font-family:var(--mono)}
.card p{color:var(--ink-soft);font-size:15.5px;flex:1}
.card .out{font-size:14.5px;color:var(--ink);border-top:1px solid var(--line);padding-top:14px}
.card .out b{color:var(--green-deep)}
.card .start-here{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--paper);background:var(--green-deep);align-self:flex-start;padding:4px 10px;border-radius:99px}
.cards-note{margin-top:26px;font-size:14.5px;color:var(--steel)}
@media(max-width:860px){.cards{grid-template-columns:1fr}}

/* ---------- dark instrument insets ---------- */
.inset{
  background:var(--panel);color:var(--panel-ink);border:1px solid var(--panel-line);
  border-radius:var(--radius);padding:34px 34px 30px;
}
.inset .sc-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px dashed var(--panel-line);padding-bottom:14px;margin-bottom:16px}
.inset .sc-title{font-family:var(--mono);font-size:11.5px;letter-spacing:.22em;color:var(--panel-muted)}
.inset .sc-chip{
  background:rgba(74,222,150,.12);color:var(--green-avionics);font-family:var(--mono);
  font-size:11px;padding:4px 11px;border-radius:99px;letter-spacing:.12em;font-weight:500;
}
.inset .sc-row{display:flex;justify-content:space-between;gap:18px;font-family:var(--mono);font-size:13px;padding:8px 0;color:var(--panel-muted)}
.inset .sc-row b{color:var(--panel-ink);font-weight:500;text-align:right}
.inset .sc-row b span{color:var(--green-avionics)}

/* ---------- the Brief showcase ---------- */
.brief-grid{margin-top:48px;display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;align-items:start}
@media(max-width:860px){.brief-grid{grid-template-columns:1fr}}
.brief-doc{box-shadow:0 24px 60px -24px rgba(11,18,32,.45)}
.brief-doc .b-sec{padding:13px 0;border-top:1px solid var(--panel-line)}
.brief-doc .b-sec:first-of-type{border-top:none;padding-top:0}
.brief-doc .b-num{font-family:var(--mono);font-size:10.5px;color:var(--green-avionics);letter-spacing:.18em}
.brief-doc .b-h{font-weight:700;font-size:15px;color:var(--panel-ink);margin-top:3px;font-family:var(--sans)}
.brief-doc .b-line{font-size:13px;color:var(--panel-muted);margin-top:3px}
.brief-doc .b-line b{color:var(--panel-ink);font-weight:500}
.brief-list{margin-top:26px;display:grid;gap:0;max-width:var(--measure)}
.brief-list .row{padding:15px 0;border-top:1px solid var(--line);display:flex;gap:14px;align-items:baseline}
.brief-list .row:last-child{border-bottom:1px solid var(--line)}
.brief-list .n{font-family:var(--mono);font-size:12px;color:var(--green-deep)}
.brief-list p{font-size:15.5px;color:var(--ink-soft)}
.brief-list p b{color:var(--ink)}

/* ---------- questions list ---------- */
.qs{margin-top:44px;display:grid;grid-template-columns:1fr 1fr;gap:0 56px;max-width:56rem}
.qs p{padding:15px 0;border-bottom:1px solid var(--line);font-size:16.5px;color:var(--ink-soft)}
.qs p::before{content:"— ";color:var(--green-deep);font-weight:700}
@media(max-width:720px){.qs{grid-template-columns:1fr}}

/* ---------- credibility ---------- */
.cred-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
@media(max-width:860px){.cred-grid{grid-template-columns:1fr}}
blockquote{
  font-family:var(--serif);font-style:italic;font-weight:400;
  font-size:clamp(21px,2.6vw,26px);line-height:1.5;color:var(--ink);max-width:34ch;
  border-left:3px solid var(--green-deep);padding-left:26px;
}
blockquote span{color:var(--green-deep)}
.byline{margin-top:20px;color:var(--steel);font-size:14px;font-family:var(--mono);letter-spacing:.04em}
.verify{margin-top:22px;font-size:14px;color:var(--ink-soft);max-width:var(--measure)}

/* ---------- process steps ---------- */
.steps{margin-top:48px;display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:860px){.steps{grid-template-columns:1fr}}
.step{border-top:2px solid var(--line);padding-top:22px}
.step.active{border-top-color:var(--green-deep)}
.step .s-num{font-family:var(--mono);font-size:11.5px;color:var(--green-deep);letter-spacing:.16em;margin-bottom:10px}
.step h3{font-family:var(--serif);font-size:21px;font-weight:600;margin-bottom:8px}
.step p{color:var(--ink-soft);font-size:15.5px}

/* ---------- FAQ ---------- */
details{border-top:1px solid var(--line);max-width:46rem}
details:last-of-type{border-bottom:1px solid var(--line)}
summary{
  cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;
  gap:20px;padding:21px 0;font-weight:700;font-size:17px;
}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--green-deep);font-size:22px;font-weight:400;transition:transform .2s ease}
details[open] summary::after{transform:rotate(45deg)}
details p{color:var(--ink-soft);padding:0 0 22px;font-size:15.5px;max-width:42rem}

/* ---------- final CTA ---------- */
.final-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:44px;align-items:center}
@media(max-width:860px){.final-grid{grid-template-columns:1fr}}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:34px 0;color:var(--steel);font-size:13.5px}
footer .wrap{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;align-items:center}
footer a{color:var(--ink-soft);text-decoration:none}
footer a:hover{color:var(--green-deep)}
footer .fm{font-family:var(--mono);font-size:12px;letter-spacing:.06em}

/* ---------- document page (brief.html) ---------- */
.doc{max-width:820px;margin:0 auto;padding:72px 28px 96px}
.doc-head{border:1px solid var(--line);border-radius:var(--radius);padding:22px 26px;display:grid;grid-template-columns:repeat(3,auto);gap:10px 40px;font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--ink-soft)}
.doc-head b{display:block;color:var(--ink);font-weight:500;margin-top:2px}
@media(max-width:720px){.doc-head{grid-template-columns:1fr 1fr}}
.sample-strip{
  background:var(--amber);color:var(--paper);font-family:var(--mono);font-size:11.5px;
  letter-spacing:.22em;text-align:center;padding:8px 12px;
}
.doc h1{font-size:clamp(34px,4.5vw,52px)}
.doc section{padding:44px 0 0}
.doc .sec-kick{font-family:var(--mono);font-size:12px;color:var(--green-deep);letter-spacing:.18em;margin-bottom:8px}
.doc h2{font-size:clamp(24px,3vw,32px)}
.doc p{margin-top:14px;color:var(--ink-soft);max-width:none}
.doc p b{color:var(--ink)}
.callout{
  border:1px solid var(--line);border-left:3px solid var(--green-deep);border-radius:var(--radius);
  padding:18px 22px;margin-top:20px;
}
.callout .c-label{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--steel);text-transform:uppercase}
.callout .c-num{font-family:var(--serif);font-size:32px;font-weight:600;margin-top:4px}
.callout .c-num span{color:var(--green-deep)}
.callout .c-sub{font-size:13.5px;color:var(--ink-soft);margin-top:2px}
.doc table{width:100%;border-collapse:collapse;margin-top:20px;font-size:14.5px}
.doc th{font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--steel);text-align:left;padding:10px 12px 10px 0;border-bottom:1px solid var(--ink)}
.doc td{padding:10px 12px 10px 0;border-bottom:1px solid var(--line);color:var(--ink-soft)}
.doc td b{color:var(--ink)}
.doc td.neg{color:var(--amber)}
.doc tr.total td{border-top:1px solid var(--ink);border-bottom:none;font-weight:700;color:var(--ink)}

/* ---------- reveal motion ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
.stagger>*{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}
.stagger.in>*{opacity:1;transform:none}
.stagger.in>*:nth-child(1){transition-delay:.05s}
.stagger.in>*:nth-child(2){transition-delay:.13s}
.stagger.in>*:nth-child(3){transition-delay:.21s}
.stagger.in>*:nth-child(4){transition-delay:.29s}
.stagger.in>*:nth-child(5){transition-delay:.37s}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal,.stagger>*{opacity:1;transform:none;transition:none}
  .horizon .bug{transition:none}
  .btn,.nav-cta{transition:none}
}

/* ---------- focus ---------- */
a:focus-visible,summary:focus-visible,button:focus-visible{
  outline:2px solid var(--green-deep);outline-offset:3px;border-radius:2px;
}

/* ---------- <=720 mobile pass ---------- */
@media(max-width:720px){
  section{padding:60px 0}
  header.hero{padding-top:64px}
  .doc{padding:48px 20px 72px}
  .doc-head{grid-template-columns:1fr;gap:14px}
}
@media(max-width:480px){
  .nav-cta{padding:9px 13px;font-size:13px}
  .wordmark{font-size:15px}
}
.table-scroll{overflow-x:auto}
.table-scroll table{min-width:520px}