/* The Amplifier — site styles
   Brand system v1.1, 14 September 2026. Luminous dark: Midnight ground,
   Paper text, one Signal accent held to roughly 5% of any layout.
   Warm is you, cool is the machine. */

:root{
  /* ground and ink */
  --midnight:#0B0F1A; --slate:#141A29; --hairline:#263049;
  --paper:#F3EFE6; --ink:#0E1220;
  --signal:#F2A93B; --signal-deep:#8A5200; --ice:#8FB8FF;

  /* semantic aliases kept from v1 so existing markup keeps working */
  --bg:var(--midnight); --surface:var(--slate); --line:var(--hairline);
  --text-c:var(--paper); --ink2:#9AA3B8; --muted:#8792A8;

  /* the three types — retuned to sit inside the brand */
  --amp:#F2A93B; --dep:#B49CFF; --avo:#34B5A2;
  --amp-soft:rgba(242,169,59,.12); --dep-soft:rgba(180,156,255,.12); --avo-soft:rgba(52,181,162,.12);
  --amp-line:rgba(242,169,59,.42); --dep-line:rgba(180,156,255,.42); --avo-line:rgba(52,181,162,.42);

  --ok:#5BD6A0; --warn:#F2A93B; --err:#FF8B7E;

  --display:"Bricolage Grotesque","Instrument Sans",system-ui,sans-serif;
  --sans:"Instrument Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --serif:"Source Serif 4",Georgia,serif;

  --maxw:1200px; --text:72ch; --r:12px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--midnight)}
body{margin:0;font-family:var(--sans);font-size:17px;line-height:1.6;color:var(--paper);background:var(--midnight);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
@media (max-width:640px){body{font-size:16px}}

h1,h2,h3,h4{font-family:var(--display);font-weight:600;line-height:1.12;margin:0 0 .5em;letter-spacing:-.02em;color:var(--paper)}
h1{font-size:clamp(2.1rem,4.4vw,3.5rem)}
h2{font-size:clamp(1.55rem,2.8vw,2.25rem);margin-top:2.2em}
h3{font-size:1.3rem;margin-top:1.7em;letter-spacing:-.015em}
h4{font-size:1.05rem;margin-top:1.4em}
p,li{max-width:var(--text)}
strong{font-weight:600}
a{color:var(--ice);text-decoration-thickness:1px;text-underline-offset:3px;text-decoration-color:rgba(143,184,255,.45);transition:text-decoration-color .15s}
a:hover{text-decoration-color:var(--ice);text-decoration-thickness:2px}
em{font-style:italic}
hr{border:0;border-top:1px solid var(--hairline);margin:2.5em 0}
::selection{background:rgba(242,169,59,.28);color:var(--paper)}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:8px;background:var(--signal);color:var(--ink);padding:10px 16px;border-radius:8px;font-weight:600;text-decoration:none}
.skip:focus{left:8px;z-index:100}
.visually-hidden{position:absolute!important;clip:rect(1px,1px,1px,1px);width:1px;height:1px;overflow:hidden}
:focus-visible{outline:2px solid var(--ice);outline-offset:3px;border-radius:4px}

/* the signal line — a rule that starts thin and ends thick */
.signal-line{height:6px;border:0;margin:28px 0;background:var(--signal);clip-path:polygon(0 42%,100% 0,100% 100%,0 58%);max-width:180px}
.signal-line.full{max-width:none}
/* one round origin point per surface */
.origin{display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--signal);vertical-align:middle}

/* the bracket device — holds a word the way the logo holds its point */
.kept{display:inline-flex;align-items:center;gap:.55em;font-family:var(--display);font-weight:600;letter-spacing:-.02em}
.kept::before,.kept::after{content:"";width:.34em;align-self:stretch;border-style:solid;border-color:var(--paper)}
.kept::before{border-width:2px 0 2px 2px;margin:.16em 0}
.kept::after{border-width:3px 3px 3px 0;margin:0}

/* header */
.site-header{background:rgba(11,15,26,.86);backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid var(--hairline);position:sticky;top:0;z-index:50}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:16px}
.brand{font-family:var(--display);font-weight:600;font-size:1.2rem;letter-spacing:-.02em;color:var(--paper);text-decoration:none;display:flex;align-items:center;gap:11px}
.brand:hover{text-decoration:none;color:var(--paper)}
.brand-mark{display:block;width:30px;height:30px;flex:0 0 auto}
.nav ul{list-style:none;margin:0;padding:0;display:flex;gap:2px;align-items:center}
.nav{display:flex;align-items:center;gap:14px}
.nav a{color:var(--paper);text-decoration:none;padding:9px 13px;border-radius:9px;font-weight:500;font-size:.97rem;position:relative}
.nav a:hover{background:var(--slate);text-decoration:none}
.nav a[aria-current]{background:var(--slate)}
.nav a[aria-current]::after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;background:var(--signal);border-radius:2px}
.nav-toggle{display:none;border:1px solid var(--hairline);background:var(--slate);color:var(--paper);padding:9px 14px;border-radius:9px;font:inherit;font-weight:500;cursor:pointer}

.btn{display:inline-block;border:1.5px solid var(--hairline);border-radius:10px;padding:11px 20px;font-weight:600;text-decoration:none;color:var(--paper);background:transparent;cursor:pointer;font:inherit;font-weight:600;min-height:44px;line-height:1.3;transition:background .15s,border-color .15s,color .15s}
.btn:hover{background:var(--slate);border-color:var(--paper);text-decoration:none;color:var(--paper)}
.btn-primary,.nav a.btn-primary,.btn-blue{background:var(--signal);color:var(--ink);border-color:var(--signal)}
.btn-primary:hover,.nav a.btn-primary:hover,.btn-blue:hover{background:#FFC062;border-color:#FFC062;color:var(--ink)}
.nav a.btn-primary{padding:11px 18px}

@media (max-width:900px){
  .nav-toggle{display:block}
  .nav{display:none;position:absolute;left:0;right:0;top:68px;background:var(--midnight);border-bottom:1px solid var(--hairline);padding:12px 24px 20px;flex-direction:column;align-items:stretch;gap:4px}
  .nav.open{display:flex}
  .nav ul{flex-direction:column;align-items:stretch}
  .nav a{display:block}
  .nav a[aria-current]::after{display:none}
  .nav a.btn-primary{text-align:center;margin-top:8px}
}

/* crumbs & hero */
.crumbs{font-size:.88rem;color:var(--ink2);padding-top:18px}
.crumbs a{color:var(--ink2);text-decoration-color:rgba(154,163,184,.4)}
.crumbs a:hover{color:var(--paper)}
.hero{padding:34px 0 10px;border-bottom:1px solid var(--hairline);margin-bottom:26px}
.hero-home{border:0}
.section-label,.kicker{text-transform:uppercase;letter-spacing:.14em;font-size:.74rem;color:var(--signal);font-weight:600;margin:0 0 10px}
.kicker{font-size:.71rem;color:var(--muted);margin-bottom:6px}
.lede{font-size:1.2rem;line-height:1.55;color:var(--ink2);max-width:62ch}
.phase{font-size:.9rem;color:var(--signal);background:var(--amp-soft);border:1px solid var(--amp-line);padding:9px 14px;border-radius:9px;max-width:var(--text)}

/* answer / callouts */
.answer{background:var(--slate);border:1px solid var(--hairline);border-left:3px solid var(--signal);padding:18px 22px;border-radius:0 var(--r) var(--r) 0;margin:10px 0 26px;max-width:calc(var(--text) + 44px)}
.answer p{margin:.4em 0}
.callout{background:var(--slate);border:1px solid var(--hairline);padding:18px 22px;border-radius:var(--r);margin:26px 0;max-width:calc(var(--text) + 44px)}
.callout.amp{border-left:3px solid var(--amp)}
.callout.dep{border-left:3px solid var(--dep)}
.callout.avo{border-left:3px solid var(--avo)}
/* the two voices: grotesk states the framework, serif italic is the reader's own head */
.quote{font-family:var(--serif);font-style:italic;font-size:1.45rem;line-height:1.42;border-left:2px solid var(--signal);padding:6px 26px;margin:34px 0;max-width:58ch;color:var(--signal)}
.quote cite{display:block;font-family:var(--sans);font-style:normal;font-size:.88rem;color:var(--ink2);margin-top:12px;letter-spacing:.01em}
.btl{font-family:var(--display);font-size:1rem;text-transform:uppercase;letter-spacing:.14em;margin-top:2.2em;color:var(--muted)}
.sep{text-align:center;color:var(--muted)}
.tiny{font-size:.8rem;color:var(--muted)}
.chapter-ref{font-size:.88rem;color:var(--ink2);border-top:1px solid var(--hairline);padding-top:10px}

/* type badges — colour never carries the meaning alone, the name is always there */
.badge{display:inline-block;font-size:.76rem;font-weight:600;padding:3px 11px;border-radius:999px;border:1px solid transparent;letter-spacing:.01em}
.badge.amp{background:var(--amp-soft);color:var(--amp);border-color:var(--amp-line)}
.badge.dep{background:var(--dep-soft);color:var(--dep);border-color:var(--dep-line)}
.badge.avo{background:var(--avo-soft);color:var(--avo);border-color:var(--avo-line)}

/* grids & cards */
.grid{display:grid;gap:16px;grid-template-columns:repeat(3,1fr);margin:18px 0 34px}
.grid.two{grid-template-columns:repeat(2,1fr)}
.grid.four{grid-template-columns:repeat(4,1fr)}
@media (max-width:1000px){.grid,.grid.four{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.grid,.grid.two,.grid.four{grid-template-columns:1fr}}
.card{display:block;background:var(--slate);border:1px solid var(--hairline);border-radius:14px;padding:20px 22px;text-decoration:none;color:var(--paper);transition:border-color .2s,transform .2s,background .2s}
.card:hover{border-color:rgba(243,239,230,.45);background:#182031;transform:translateY(-2px);text-decoration:none;color:var(--paper)}
.card-t{display:block;font-family:var(--display);font-weight:600;font-size:1.14rem;letter-spacing:-.015em;margin-bottom:7px}
.card-d{display:block;color:var(--ink2);font-size:.94rem;line-height:1.5}
.card.amp{border-top:3px solid var(--amp)}.card.dep{border-top:3px solid var(--dep)}.card.avo{border-top:3px solid var(--avo)}
.card .meta{display:block;font-size:.76rem;color:var(--muted);margin-top:10px;letter-spacing:.02em}
.cta-band{background:var(--slate);border:1px solid var(--hairline);border-radius:18px;padding:34px;margin:44px 0;display:flex;gap:24px;align-items:center;justify-content:space-between;flex-wrap:wrap;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--signal)}
.cta-band h2{margin:0 0 8px;color:var(--paper)}
.cta-band p{margin:0;color:var(--ink2)}

/* steps — human markers warm, AI markers cool */
.steps{counter-reset:step;list-style:none;padding:0;margin:26px 0}
.steps>li{position:relative;padding-left:66px;margin-bottom:26px;max-width:calc(var(--text) + 66px)}
.steps>li::before{counter-increment:step;content:counter(step);position:absolute;left:0;top:2px;width:44px;height:44px;border-radius:12px;background:var(--slate);border:1px solid var(--hairline);color:var(--paper);display:grid;place-items:center;font-family:var(--display);font-weight:600;font-size:1.15rem}
.steps h3{margin:0 0 5px}
.steps .human::before{background:var(--signal);border-color:var(--signal);color:var(--ink)}
.steps .ai::before{background:var(--ice);border-color:var(--ice);color:var(--ink)}
ul.clean{list-style:none;padding:0}
ul.clean li{padding-left:1.3em;position:relative;margin-bottom:.55em}
ul.clean li::before{content:"—";position:absolute;left:0;color:var(--muted)}
.checklist{list-style:none;padding:0}
.checklist li{margin:9px 0;padding-left:34px;position:relative;max-width:var(--text)}
.checklist li::before{content:"";position:absolute;left:0;top:5px;width:18px;height:18px;border:1.5px solid var(--ink2);border-radius:4px}

/* tables */
.table-wrap{overflow-x:auto;margin:22px 0;border:1px solid var(--hairline);border-radius:var(--r)}
table{border-collapse:collapse;width:100%;font-size:.94rem;background:var(--slate)}
th,td{border-bottom:1px solid var(--hairline);border-right:1px solid var(--hairline);padding:11px 14px;text-align:left;vertical-align:top}
th:last-child,td:last-child{border-right:0}
tr:last-child td{border-bottom:0}
th{background:#1A2233;font-weight:600;color:var(--paper);font-size:.86rem;letter-spacing:.02em}
td{color:var(--ink2)}
td p{max-width:none;margin:0}

/* faq */
.faq{margin-top:52px;border-top:1px solid var(--hairline);padding-top:18px}
.faq details{border-bottom:1px solid var(--hairline);padding:11px 0}
.faq summary{cursor:pointer;font-weight:600;font-size:1.04rem;padding:7px 0;list-style:none;display:flex;justify-content:space-between;gap:12px;color:var(--paper)}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--signal)}
.faq summary::after{content:"+";color:var(--signal);font-weight:400;font-size:1.2rem;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details>div{padding:4px 0 12px;color:var(--ink2)}
.related{margin-top:52px}

/* forms */
form.stack{display:grid;gap:15px;max-width:560px}
label{font-weight:500;display:block;margin-bottom:5px;color:var(--paper)}
input[type=text],input[type=email],input[type=tel],select,textarea{width:100%;padding:11px 13px;border:1.5px solid var(--hairline);border-radius:9px;font:inherit;background:var(--slate);color:var(--paper);min-height:44px}
input::placeholder,textarea::placeholder{color:var(--muted)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--ice);outline-offset:2px;border-color:var(--ice)}
textarea{min-height:120px;line-height:1.55}
.newsletter{display:grid;gap:9px;max-width:340px}
.field-note,.hint{font-size:.87rem;color:var(--ink2)}
.msg-ok{color:var(--ok)}.msg-err{color:var(--err)}

/* AMQ */
.amq-shell{max-width:760px;margin:0 auto}
.progress{height:6px;background:var(--hairline);border-radius:999px;overflow:hidden;margin:18px 0 26px}
.progress>span{display:block;height:100%;background:var(--signal);width:0;transition:width .3s ease-out}
.q-scenario{font-size:1.12rem;line-height:1.6;color:var(--ink2)}
.q-prompt{font-family:var(--display);font-weight:600;letter-spacing:-.02em;font-size:1.42rem;margin:14px 0 22px;color:var(--paper)}
.options{display:grid;gap:12px;list-style:none;padding:0}
.options button{text-align:left;width:100%;padding:16px 19px;border:1.5px solid var(--hairline);border-radius:12px;background:var(--slate);color:var(--paper);font:inherit;cursor:pointer;line-height:1.5;transition:border-color .15s,background .15s}
.options button:hover{border-color:rgba(243,239,230,.5);background:#182031}
.options button[aria-pressed=true]{border-color:var(--signal);background:var(--amp-soft);box-shadow:inset 0 0 0 1px var(--signal)}
.amq-nav{display:flex;justify-content:space-between;margin-top:26px;gap:12px}
.result-head{padding:26px;border-radius:16px;border:1px solid var(--hairline);background:var(--slate);margin:18px 0}
.result-head.amp{border-top:4px solid var(--amp)}.result-head.dep{border-top:4px solid var(--dep)}.result-head.avo{border-top:4px solid var(--avo)}
.result-head h2{margin:8px 0}
.risk{border:1px solid var(--hairline);border-radius:12px;padding:17px 21px;margin:13px 0;background:var(--slate);max-width:calc(var(--text) + 44px)}
.risk h3{margin:0 0 7px;font-size:1.12rem}
.dims{display:grid;gap:10px}
.dim{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:center;padding:11px 15px;border:1px solid var(--hairline);border-radius:10px;background:var(--slate)}

/* workbench */
.wb-step{border:1px solid var(--hairline);border-radius:14px;padding:22px;background:var(--slate);margin:22px 0}
.wb-step h2{margin-top:0}
.wb-step textarea{min-height:140px}
.wb-actions{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0}
.prompt-box{background:#080B14;color:var(--paper);border:1px solid var(--hairline);border-radius:10px;padding:16px 18px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.87rem;line-height:1.55;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word;position:relative;max-width:100%}
.copy{position:absolute;top:9px;right:9px;font-size:.74rem;background:var(--signal);color:var(--ink);border:0;border-radius:6px;padding:5px 10px;cursor:pointer;font-weight:600}
.task-row{display:grid;grid-template-columns:2fr repeat(4,1fr) 1.2fr;gap:8px;align-items:center;padding:9px 0;border-bottom:1px solid var(--hairline)}
.task-row.head{font-size:.78rem;font-weight:600;color:var(--muted);letter-spacing:.03em;text-transform:uppercase}
@media (max-width:800px){.task-row{grid-template-columns:1fr 1fr}}
.verdict{font-weight:600}
.verdict.h{color:var(--signal)}.verdict.a{color:var(--ice)}.verdict.d{color:var(--muted)}

/* home */
.home-hero{padding:64px 0 28px;display:grid;grid-template-columns:1.25fr 1fr;gap:44px;align-items:center}
@media (max-width:900px){.home-hero{grid-template-columns:1fr;padding-top:44px;gap:28px}}
.home-hero h1{font-size:clamp(2.3rem,4.6vw,3.55rem);margin-bottom:18px;letter-spacing:-.03em}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.types{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media (max-width:800px){.types{grid-template-columns:1fr}}
.type{padding:22px;border-radius:14px;background:var(--slate);border:1px solid var(--hairline)}
.type h3{margin:7px 0 9px}
.type.amp{border-top:4px solid var(--amp)}.type.dep{border-top:4px solid var(--dep)}.type.avo{border-top:4px solid var(--avo)}
.stack-diagram{display:grid;gap:8px;max-width:520px;margin:26px 0}
.stack-diagram div{padding:16px 20px;border-radius:10px;border:1px solid var(--hairline);background:var(--slate)}
.stack-diagram .l3{margin:0 15%}.stack-diagram .l2{margin:0 7%}
.stack-diagram strong{display:block;font-family:var(--display);font-size:1.08rem;letter-spacing:-.015em}
.filter{display:grid;gap:12px;max-width:var(--text)}
.filter div{border:1px solid var(--hairline);border-radius:10px;padding:13px 17px;background:var(--slate)}
.filter strong{display:block}
.toc{background:var(--slate);border:1px solid var(--hairline);border-radius:10px;padding:14px 22px;max-width:var(--text);font-size:.94rem}
.toc ol{margin:6px 0 6px 18px;padding:0}
.toc a{color:var(--ice)}
.updated{font-size:.84rem;color:var(--muted)}
.reviewed{display:inline-block;font-size:.78rem;background:var(--slate);border:1px solid var(--hairline);border-radius:6px;padding:3px 9px;color:var(--ink2)}
dl.glossary dt{font-family:var(--display);font-weight:600;font-size:1.14rem;letter-spacing:-.015em;margin-top:22px;color:var(--paper)}
dl.glossary dd{margin:5px 0 0;max-width:var(--text);color:var(--ink2)}
.key-takeaways{background:var(--slate);border:1px solid var(--hairline);border-left:3px solid var(--signal);border-radius:0 var(--r) var(--r) 0;padding:17px 22px;max-width:calc(var(--text) + 44px)}
.key-takeaways ul{margin:7px 0 0 18px;padding:0}

/* footer */
.site-footer{margin-top:72px;border-top:1px solid var(--hairline);background:#090D16;padding:44px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr 1fr;gap:34px}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr}}
.footer-logo{display:block;width:150px;height:auto;margin-bottom:14px}
.footer-h{font-family:var(--display);font-weight:600;font-size:1.05rem;letter-spacing:-.015em;margin:0 0 10px;color:var(--paper)}
.site-footer p{color:var(--ink2)}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin:5px 0}
.footer-links a{color:var(--ink2);text-decoration:none}
.footer-links a:hover{color:var(--paper);text-decoration:underline}
.footer-bar{border-top:1px solid var(--hairline);margin-top:26px;padding-top:18px;font-size:.84rem;color:var(--muted)}
.footer-bar p{max-width:none;color:var(--muted)}
.brand-line{font-family:var(--serif);font-style:italic;color:var(--signal);font-size:1.02rem;margin:0 0 10px}

/* worksheets print on Paper, never Midnight */
.sheet{background:var(--paper);color:var(--ink);border:1px solid var(--hairline);padding:34px;border-radius:12px;max-width:820px}
.sheet h1,.sheet h2,.sheet h3,.sheet h4,.sheet strong,.sheet label{color:var(--ink)}
.sheet p,.sheet li{color:#3A3F4D}
.sheet a{color:#2F5FB3}
.sheet h2{margin-top:1.2em}
.lines{border-bottom:1px solid #9A9589;height:2.2em}
.sheet .box{border:1px solid #9A9589;border-radius:6px;min-height:120px;margin:8px 0 16px;background:#FBF9F4}
/* everything inside a worksheet stays on Paper — it is meant to be printed and written on */
.sheet{border-color:#D8D2C4}
.sheet .table-wrap{border-color:#9A9589;border-radius:6px}
.sheet table{background:#FBF9F4}
.sheet th{background:#EAE5D8;color:var(--ink);border-color:#9A9589}
.sheet td{background:transparent;color:var(--ink);border-color:#9A9589}
.sheet .checklist li::before{border-color:#6B6558}
.sheet ul.clean li::before{color:#6B6558}
.sheet input,.sheet textarea,.sheet select{background:#FBF9F4;color:var(--ink);border-color:#9A9589}
.sheet .tiny,.sheet .hint,.sheet .field-note{color:#5A6072}
@media print{
  .site-header,.site-footer,.crumbs,.related,.faq,.phase,.no-print,.nav-cta{display:none!important}
  html,body{background:#fff;color:#000;font-size:11pt}
  h1,h2,h3,h4,p,li,td,th,strong,label{color:#000!important}
  .wrap{max-width:none;padding:0}
  .sheet{border:0;padding:0;background:#fff}
  .card,.callout,.answer,.wb-step,.risk,.toc,.key-takeaways,table,th,td{background:#fff!important;border-color:#bbb!important}
  a{color:inherit;text-decoration:none}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .card:hover{transform:none}
}