:root{
  --ground:#F2F4F7;
  --surface:#FFFFFF;
  --surface-2:#E9ECF1;
  --ink:#12161D;
  --ink-soft:#59616F;
  --ink-faint:#8B93A1;
  --rule:#DCE1E8;
  --accent:#9A6510;
  --accent-soft:#F3E5CB;
  --ok:#1F7A4D;
  --warn:#A8541A;
  --danger:#A8232B;
  --term-bg:#14181F;
  --term-ink:#DCE3ED;
  --term-rule:#2A313C;
  --term-dim:#7E8896;
  --shadow:0 1px 2px rgba(18,22,29,.05),0 8px 24px -12px rgba(18,22,29,.18);
  --maxw:44rem;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --ground:#0D1015;
    --surface:#151A21;
    --surface-2:#1D232C;
    --ink:#E8ECF2;
    --ink-soft:#A0A9B7;
    --ink-faint:#6E7887;
    --rule:#262D37;
    --accent:#D9A24A;
    --accent-soft:#2C2416;
    --ok:#5CBE8C;
    --warn:#D68A4C;
    --danger:#E2707A;
    --term-bg:#080A0E;
    --term-ink:#DCE3ED;
    --term-rule:#222833;
    --term-dim:#727C8B;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px -12px rgba(0,0,0,.6);
  }
}
:root[data-theme="dark"]{
  --ground:#0D1015;
  --surface:#151A21;
  --surface-2:#1D232C;
  --ink:#E8ECF2;
  --ink-soft:#A0A9B7;
  --ink-faint:#6E7887;
  --rule:#262D37;
  --accent:#D9A24A;
  --accent-soft:#2C2416;
  --ok:#5CBE8C;
  --warn:#D68A4C;
  --danger:#E2707A;
  --term-bg:#080A0E;
  --term-ink:#DCE3ED;
  --term-rule:#222833;
  --term-dim:#727C8B;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px -12px rgba(0,0,0,.6);
}

*{box-sizing:border-box}
body{
  margin:0;
  background:var(--ground);
  color:var(--ink);
  font:400 1.0625rem/1.65 Onest,-apple-system,"Segoe UI",system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{text-wrap:balance;margin:0}
p{margin:0}
a{color:var(--accent)}

/* ---------- shell ---------- */
.wrap{max-width:64rem;margin:0 auto;padding:0 1.25rem}
.layout{display:grid;grid-template-columns:1fr;gap:0}
@media(min-width:64rem){
  .layout{grid-template-columns:13rem minmax(0,1fr);gap:3.5rem;align-items:start}
}

/* ---------- masthead ---------- */
.mast{border-bottom:1px solid var(--rule);background:var(--surface)}
.mast-in{display:flex;flex-wrap:wrap;gap:1rem 1.5rem;align-items:baseline;
  padding:1.75rem 0 1.5rem}
.mark{font:700 1.0625rem/1 Unbounded,Onest,sans-serif;letter-spacing:-.02em}
.mark span{color:var(--accent)}
.mast-note{font-size:.8125rem;color:var(--ink-faint);margin-left:auto;
  font-variant-numeric:tabular-nums}

/* ---------- hero ---------- */
.hero{padding:4rem 0 3rem;border-bottom:1px solid var(--rule)}
.eyebrow{font:500 .75rem/1 Onest,sans-serif;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent)}
.hero h1{font:600 clamp(2rem,5.5vw,3.25rem)/1.08 Unbounded,Onest,sans-serif;
  letter-spacing:-.035em;margin:1.25rem 0 0;max-width:18ch}
.lede{margin-top:1.5rem;max-width:38rem;font-size:1.1875rem;color:var(--ink-soft)}
.lede strong{color:var(--ink);font-weight:600}

.facts{display:grid;gap:1px;background:var(--rule);border:1px solid var(--rule);
  border-radius:2px;margin-top:2.5rem;grid-template-columns:1fr}
@media(min-width:34rem){.facts{grid-template-columns:repeat(3,1fr)}}
.fact{background:var(--surface);padding:1.125rem 1.25rem}
.fact dt{font:500 .6875rem/1 Onest,sans-serif;letter-spacing:.12em;
  text-transform:uppercase;color:var(--ink-faint)}
.fact dd{margin:.6rem 0 0;font:600 1.375rem/1.1 Unbounded,Onest,sans-serif;
  letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.fact small{display:block;margin-top:.35rem;font-size:.8125rem;color:var(--ink-soft);
  font-weight:400;font-family:Onest,sans-serif;letter-spacing:0}

/* ---------- flow diagram ---------- */
.flow{margin-top:3rem;padding:1.75rem;background:var(--surface);
  border:1px solid var(--rule);border-radius:2px;overflow-x:auto}
.flow svg{display:block;width:100%;min-width:30rem;height:auto}

/* ---------- side index ---------- */
.rail{display:none}
@media(min-width:64rem){
  .rail{display:block;position:sticky;top:2rem;padding:3.5rem 0 0}
}
.rail h4{font:500 .6875rem/1 Onest,sans-serif;letter-spacing:.12em;
  text-transform:uppercase;color:var(--ink-faint);margin-bottom:1rem}
.rail ol{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.55rem}
.rail a{display:flex;gap:.6rem;text-decoration:none;color:var(--ink-soft);
  font-size:.875rem;line-height:1.35;padding:.15rem 0}
.rail a:hover{color:var(--accent)}
.rail a b{font:500 .75rem/1.5 "JetBrains Mono",monospace;color:var(--ink-faint);
  min-width:1.4rem}
.rail a:hover b{color:var(--accent)}

/* ---------- content ---------- */
main{padding:3.5rem 0 5rem;max-width:var(--maxw)}
section{padding-block:2.75rem;border-top:1px solid var(--rule)}
section:first-of-type{border-top:none;padding-top:0}
.step-head{display:flex;gap:1rem;align-items:flex-start}
.step-num{font:600 .875rem/1.9 Unbounded,monospace;color:var(--accent);
  min-width:2.25rem;font-variant-numeric:tabular-nums}
section h2{font:600 1.625rem/1.2 Unbounded,Onest,sans-serif;letter-spacing:-.03em}
section h3{font:600 1.0625rem/1.4 Onest,sans-serif;margin-top:2rem;
  display:flex;gap:.5rem;align-items:baseline}
section > p,section > ul,section > ol{margin-top:1rem}
section p + p{margin-top:.9rem}
.sub{margin-top:.75rem;color:var(--ink-soft)}
ul,ol{padding-left:1.25rem;display:flex;flex-direction:column;gap:.5rem}
li{margin:0}
strong{font-weight:600}
code{font:400 .875em/1.4 "JetBrains Mono",monospace;background:var(--surface-2);
  padding:.12em .38em;border-radius:2px}

/* ---------- terminal blocks ---------- */
.term{margin-top:1.25rem;background:var(--term-bg);border-radius:3px;
  box-shadow:var(--shadow);overflow:hidden}
.term-bar{display:flex;align-items:center;gap:.75rem;padding:.55rem .875rem;
  border-bottom:1px solid var(--term-rule)}
.term-bar span{font:500 .6875rem/1 "JetBrains Mono",monospace;color:var(--term-dim);
  letter-spacing:.06em;text-transform:uppercase}
.copy{margin-left:auto;background:transparent;border:1px solid var(--term-rule);
  color:var(--term-dim);font:500 .6875rem/1 Onest,sans-serif;padding:.35rem .6rem;
  border-radius:2px;cursor:pointer;letter-spacing:.04em}
.copy:hover{color:var(--term-ink);border-color:var(--term-dim)}
.copy:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.copy[data-done="1"]{color:var(--ok);border-color:var(--ok)}
.term pre{margin:0;padding:.95rem .875rem 1.05rem;overflow-x:auto;
  font:400 .8125rem/1.75 "JetBrains Mono",monospace;color:var(--term-ink)}
.term pre .c{color:var(--term-dim)}

/* ---------- callouts ---------- */
.note{margin-top:1.25rem;padding:1rem 1.125rem;background:var(--surface);
  border:1px solid var(--rule);border-left:3px solid var(--ink-faint);
  border-radius:2px;font-size:.9375rem}
.note.warn{border-left-color:var(--warn)}
.note.danger{border-left-color:var(--danger)}
.note.ok{border-left-color:var(--ok)}
.note b{display:block;margin-bottom:.3rem;font-weight:600}
.note.warn b{color:var(--warn)}
.note.danger b{color:var(--danger)}
.note.ok b{color:var(--ok)}

/* ---------- tables ---------- */
.tw{margin-top:1.25rem;overflow-x:auto;border:1px solid var(--rule);border-radius:2px}
table{border-collapse:collapse;width:100%;background:var(--surface);font-size:.9375rem}
th,td{text-align:left;padding:.7rem .875rem;border-bottom:1px solid var(--rule);
  vertical-align:top}
th{font:500 .6875rem/1.4 Onest,sans-serif;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink-faint);background:var(--surface-2)}
tr:last-child td{border-bottom:none}
td code{background:transparent;padding:0;color:var(--accent)}

/* ---------- checklist ---------- */
.check{margin-top:1.5rem;display:flex;flex-direction:column;gap:0;
  border:1px solid var(--rule);border-radius:2px;background:var(--surface);padding:0}
.check label{display:flex;gap:.75rem;align-items:flex-start;padding:.8rem 1rem;
  border-bottom:1px solid var(--rule);cursor:pointer;font-size:.9375rem}
.check label:last-child{border-bottom:none}
.check input{margin:.28rem 0 0;accent-color:var(--accent);width:1rem;height:1rem;
  flex:none;cursor:pointer}
.check input:checked + span{color:var(--ink-faint);text-decoration:line-through}
.check span{transition:color .15s}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--rule);background:var(--surface);
  padding:2.5rem 0 3.5rem;font-size:.875rem;color:var(--ink-soft)}
footer h3{font:600 .9375rem/1.4 Onest,sans-serif;color:var(--ink);margin-bottom:.75rem}
footer p{margin-top:.75rem;max-width:44rem}
.disc{margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--rule);
  font-size:.8125rem;color:var(--ink-faint)}

@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}