/* ==========================================================================
   AIXFIN — shared stylesheet
   Light editorial base + one dark showpiece band per page.
   ========================================================================== */

:root{
  /* surfaces */
  --paper:#FBFAF8;
  --paper-2:#F4F3EF;
  --rule:rgba(20,22,26,0.11);
  --rule-soft:rgba(20,22,26,0.06);

  /* ink */
  --ink:#14161A;
  --ink-2:#3E434D;
  --muted:#6C7280;

  /* accent */
  --accent:#0B7566;
  --accent-soft:rgba(11,117,102,0.07);
  --accent-line:rgba(11,117,102,0.25);
  --amber:#A9660B;

  /* the dark band — where the original identity lives */
  --night:#0B0E13;
  --night-2:#111722;
  --night-rule:rgba(228,238,250,0.10);
  --night-text:#E7ECF4;
  --night-dim:#7C8698;
  --glow:#4FE7C6;

  /* type */
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --serif:'Instrument Serif',Georgia,'Times New Roman',serif;
  --mono:'JetBrains Mono',ui-monospace,Menlo,monospace;

  --shadow:0 10px 24px rgba(20,22,26,0.16);
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
::selection{background:var(--accent);color:#fff;}

:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:3px;}
.band :focus-visible{outline-color:var(--glow);}

.wrap{max-width:1140px;margin:0 auto;padding:0 40px;}
@media (max-width:760px){.wrap{padding:0 22px;}}

h1,h2,h3{font-family:var(--serif);font-weight:400;letter-spacing:-0.02em;line-height:1.04;}

.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--paper);padding:12px 20px;z-index:200;}
.skip:focus{left:12px;top:12px;}

/* eyebrow ------------------------------------------------------------------ */
.eyebrow{display:flex;align-items:center;gap:11px;margin-bottom:30px;}
.eyebrow::before{content:'';width:26px;height:1px;background:var(--accent);flex-shrink:0;}
.eyebrow span{
  font-family:var(--mono);font-size:11.5px;letter-spacing:0.12em;
  text-transform:uppercase;color:var(--accent);
}

/* buttons ------------------------------------------------------------------ */
.btn-primary{
  font-size:15px;font-weight:500;background:var(--ink);color:var(--paper);
  padding:14px 26px;border-radius:8px;display:inline-flex;align-items:center;gap:9px;
  transition:transform .16s,box-shadow .16s;
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow);}
.btn-ghost{
  font-size:15px;border:1px solid var(--rule);color:var(--ink);
  padding:14px 26px;border-radius:8px;display:inline-flex;align-items:center;gap:9px;
  transition:border-color .18s,background .18s;
}
.btn-ghost:hover{border-color:var(--ink);background:rgba(20,22,26,0.02);}
.btn-sm{
  font-size:13.5px;background:var(--ink);color:var(--paper);
  padding:9px 17px;border-radius:7px;transition:opacity .18s;white-space:nowrap;
}
.btn-sm:hover{opacity:.85;}
.deeplink{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;color:var(--accent);
  border-bottom:1px solid var(--accent-line);padding-bottom:2px;transition:border-color .2s;
}
.deeplink:hover{border-bottom-color:var(--accent);}

/* ==========================================================================
   NAV — left group maps THIS page, right group leaves it
   ========================================================================== */
header.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(251,250,248,0.82);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--rule-soft);
}
.nav .wrap{display:flex;align-items:center;gap:40px;height:74px;}
.logo{
  font-family:var(--serif);font-size:22px;letter-spacing:-0.01em;
  display:flex;align-items:center;gap:9px;flex-shrink:0;
}
.logo .mark{width:9px;height:9px;border-radius:50%;background:var(--accent);flex-shrink:0;}

.navmap{display:flex;gap:30px;font-size:14px;color:var(--muted);margin-right:auto;}
.navmap a{padding:4px 0;position:relative;transition:color .2s;}
.navmap a::after{
  content:'';position:absolute;left:0;right:0;bottom:-2px;height:1.5px;background:var(--ink);
  transform:scaleX(0);transform-origin:left;transition:transform .28s cubic-bezier(.4,0,.2,1);
}
.navmap a:hover{color:var(--ink);}
.navmap a.active{color:var(--ink);}
.navmap a.active::after{transform:scaleX(1);}

.navout{display:flex;align-items:center;gap:22px;padding-left:24px;border-left:1px solid var(--rule);}
.navout .away{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--muted);transition:color .2s;}
.navout .away:hover{color:var(--accent);}
.navout .away svg{opacity:.55;}

.burger{
  display:none;background:none;border:1px solid var(--rule);color:var(--ink);
  width:38px;height:38px;border-radius:8px;cursor:pointer;
  align-items:center;justify-content:center;
}
.burger span{display:block;width:15px;height:1.5px;background:var(--ink);position:relative;transition:background .2s;}
.burger span::before,.burger span::after{
  content:'';position:absolute;left:0;width:15px;height:1.5px;background:var(--ink);transition:transform .25s;
}
.burger span::before{top:-5px;}
.burger span::after{top:5px;}
.burger[aria-expanded="true"] span{background:transparent;}
.burger[aria-expanded="true"] span::before{transform:translateY(5px) rotate(45deg);}
.burger[aria-expanded="true"] span::after{transform:translateY(-5px) rotate(-45deg);}

@media (max-width:940px){
  .nav .wrap{gap:0;justify-content:space-between;}
  .navmap,.navout .away{display:none;}
  .navout{border-left:0;padding-left:0;gap:12px;}
  .burger{display:flex;}
}
.mobile-menu{display:none;background:var(--paper-2);border-bottom:1px solid var(--rule);}
.mobile-menu.open{display:block;}
.mobile-menu a{
  display:block;padding:15px 0;font-size:16px;color:var(--ink-2);
  border-bottom:1px solid var(--rule-soft);
}
.mobile-menu a:last-child{border-bottom:none;color:var(--accent);}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{padding:120px 0 104px;}
.hero h1{font-size:clamp(42px,6vw,74px);max-width:15ch;}
.hero h1 em{font-style:italic;color:var(--accent);}
.hero .lead{max-width:53ch;font-size:18px;color:var(--ink-2);margin-top:30px;}
.hero .actions{display:flex;gap:14px;margin-top:40px;flex-wrap:wrap;}
.hero-note{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--rule-soft);
  max-width:46ch;font-size:14px;color:var(--muted);
}
@media (max-width:700px){.hero{padding:76px 0 72px;}}

/* ==========================================================================
   DARK BAND + ANIMATED PIPELINE (shared by both pages)
   ========================================================================== */
.band{background:var(--night);color:var(--night-text);padding:104px 0;position:relative;overflow:hidden;}
.band::before{
  content:'';position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(79,231,198,0.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(79,231,198,0.05) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,black 30%,transparent 100%);
  mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,black 30%,transparent 100%);
}
.band .wrap{position:relative;z-index:2;}
.band .eyebrow::before{background:var(--glow);}
.band .eyebrow span{color:var(--glow);}
.band h2{font-size:clamp(30px,4vw,48px);max-width:19ch;}
.band .sub{color:var(--night-dim);max-width:54ch;margin-top:20px;font-size:16px;}
@media (max-width:700px){.band{padding:76px 0;}}

.console{
  margin-top:56px;border:1px solid var(--night-rule);border-radius:14px;
  background:var(--night-2);overflow:hidden;
  box-shadow:0 50px 90px -40px rgba(0,0,0,0.8);
}
.console-top{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:13px 20px;border-bottom:1px solid var(--night-rule);
  font-family:var(--mono);font-size:11px;color:var(--night-dim);letter-spacing:0.04em;
}
.console-top .demo-flag{display:inline-flex;align-items:center;gap:7px;}
.console-top .demo-flag i{width:5px;height:5px;border-radius:50%;background:var(--glow);font-style:normal;flex-shrink:0;}
@media (max-width:620px){.console-top .demo-flag span{display:none;}}

.pipeline{padding:38px 26px 30px;}
.track{display:grid;position:relative;}
.track::before{content:'';position:absolute;top:11px;left:var(--edge);right:var(--edge);height:1px;background:var(--night-rule);}
.track .fill{
  position:absolute;top:11px;left:var(--edge);height:1px;background:var(--glow);width:0;
  transition:width .7s cubic-bezier(.4,0,.2,1);box-shadow:0 0 10px var(--glow);
}
.stage{text-align:center;position:relative;z-index:2;}
.stage .knot{
  width:23px;height:23px;border-radius:50%;border:1px solid var(--night-rule);
  background:var(--night-2);margin:0 auto 14px;
  display:flex;align-items:center;justify-content:center;transition:all .4s;
}
.stage .knot::after{content:'';width:6px;height:6px;border-radius:50%;background:#39414F;transition:all .4s;}
.stage.done .knot{border-color:rgba(79,231,198,0.4);}
.stage.done .knot::after{background:var(--glow);}
.stage.on .knot{border-color:var(--glow);box-shadow:0 0 0 5px rgba(79,231,198,0.10);}
.stage.on .knot::after{background:var(--glow);box-shadow:0 0 9px var(--glow);}
.stage .nm{font-size:13px;color:#5C6478;transition:color .4s;padding:0 6px;line-height:1.35;}
.stage.done .nm,.stage.on .nm{color:var(--night-text);}
@media (max-width:640px){
  .track{grid-template-columns:1fr!important;gap:18px;}
  .track::before,.track .fill{display:none;}
  .stage{display:flex;align-items:center;gap:14px;text-align:left;}
  .stage .knot{margin:0;flex-shrink:0;}
}

.console-split{display:grid;grid-template-columns:1.35fr 1fr;border-top:1px solid var(--night-rule);}
@media (max-width:820px){.console-split{grid-template-columns:1fr;}}
.pane{padding:22px 26px;}
.pane+.pane{border-left:1px solid var(--night-rule);}
@media (max-width:820px){.pane+.pane{border-left:0;border-top:1px solid var(--night-rule);}}
.pane h4{
  font-family:var(--mono);font-size:10.5px;letter-spacing:0.1em;text-transform:uppercase;
  color:var(--night-dim);font-weight:400;margin-bottom:16px;
}
.log{min-height:186px;display:flex;flex-direction:column;gap:2px;}
.ev{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:9px 0;border-bottom:1px dashed var(--night-rule);font-size:13.5px;
  opacity:0;transform:translateY(-5px);animation:evin .45s forwards;
}
@keyframes evin{to{opacity:1;transform:none;}}
.ev .tag{
  font-family:var(--mono);font-size:10px;padding:3px 8px;border-radius:5px;
  background:rgba(79,231,198,0.11);color:var(--glow);white-space:nowrap;
}
.ev .tag.amb{background:rgba(245,166,35,0.13);color:#F5A623;}

.swap{display:flex;flex-direction:column;gap:15px;}
.swap .pair{font-size:13.5px;}
.swap .was{color:var(--night-dim);text-decoration:line-through;text-decoration-color:rgba(124,134,152,0.5);}
.swap .now{color:var(--night-text);display:flex;align-items:flex-start;gap:8px;margin-top:3px;}
.swap .now::before{content:'\2192';color:var(--glow);font-family:var(--mono);font-size:12px;line-height:1.5;}

/* ==========================================================================
   SECTION HEADS + EDITORIAL ROWS
   ========================================================================== */
.head{max-width:640px;margin-bottom:56px;}
.head h2{font-size:clamp(30px,4vw,46px);}
.head p{color:var(--ink-2);margin-top:18px;font-size:16.5px;max-width:52ch;}

.build{padding:112px 0;}
@media (max-width:700px){.build{padding:76px 0;}}
.rows{border-top:1px solid var(--rule);}
.row{
  display:grid;grid-template-columns:52px 1fr 1.05fr;gap:32px;align-items:start;
  padding:30px 12px 30px 4px;border-bottom:1px solid var(--rule);
  transition:background .25s,padding .25s;
}
.row:hover{background:var(--accent-soft);padding-left:14px;}
.row .id{font-family:var(--mono);font-size:11.5px;color:var(--muted);padding-top:6px;}
.row h3{font-size:23px;letter-spacing:-0.015em;}
.row .who{font-family:var(--mono);font-size:11px;color:var(--accent);margin-top:9px;letter-spacing:0.03em;}
.row p{color:var(--ink-2);font-size:15px;max-width:46ch;}
@media (max-width:800px){.row{grid-template-columns:1fr;gap:10px;}.row .id{padding-top:0;}}

/* ==========================================================================
   PRIVATE AI SLIVER
   ========================================================================== */
.sliver{background:var(--paper-2);padding:96px 0;border-top:1px solid var(--rule-soft);}
@media (max-width:700px){.sliver{padding:72px 0;}}
.sliver .two{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:start;}
@media (max-width:860px){.sliver .two{grid-template-columns:1fr;gap:36px;}}
.sliver h2{font-size:clamp(28px,3.6vw,42px);}
.sliver p{color:var(--ink-2);font-size:16px;margin-top:18px;max-width:46ch;}
.capsules{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px;}
.capsules span{
  font-family:var(--mono);font-size:11.5px;color:var(--accent);
  border:1px solid var(--accent-line);background:rgba(11,117,102,0.05);
  padding:6px 13px;border-radius:999px;
}
.sliver .deeplink{margin-top:28px;}
.llmlist{border-top:1px solid var(--rule);}
.llmlist .li{display:flex;justify-content:space-between;gap:20px;padding:19px 0;border-bottom:1px solid var(--rule);}
.llmlist .li strong{font-weight:600;font-size:15px;display:block;margin-bottom:3px;}
.llmlist .li p{color:var(--muted);font-size:13.5px;margin:0;}
.llmlist .li .n{font-family:var(--mono);font-size:11px;color:var(--muted);flex-shrink:0;}

/* ==========================================================================
   HOW WE WORK
   ========================================================================== */
.work{padding:112px 0;}
@media (max-width:700px){.work{padding:76px 0;}}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--rule);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);}
@media (max-width:860px){.steps{grid-template-columns:1fr;}}
.step{background:var(--paper);padding:36px 32px 40px;}
.step .n{font-family:var(--mono);font-size:11.5px;color:var(--accent);letter-spacing:0.08em;margin-bottom:20px;}
.step h3{font-size:22px;margin-bottom:12px;}
.step p{color:var(--ink-2);font-size:15px;}
.work-note{
  margin-top:34px;font-size:15px;color:var(--muted);max-width:58ch;
  padding-left:18px;border-left:2px solid var(--accent-line);
}

/* ==========================================================================
   CONTACT
   ========================================================================== */
.contact{padding:110px 0 118px;border-top:1px solid var(--rule-soft);background:var(--paper-2);}
@media (max-width:700px){.contact{padding:78px 0 84px;}}
.contact h2{font-size:clamp(32px,4.6vw,54px);max-width:17ch;}
.contact p{color:var(--ink-2);font-size:17px;margin-top:22px;max-width:46ch;}
.contact .actions{display:flex;gap:14px;margin-top:38px;flex-wrap:wrap;}
.contact .direct{
  margin-top:46px;padding-top:26px;border-top:1px solid var(--rule);
  display:flex;gap:56px;flex-wrap:wrap;
}
.contact .direct div{font-size:15px;}
.contact .direct .k{font-family:var(--mono);font-size:10.5px;letter-spacing:0.1em;text-transform:uppercase;color:var(--muted);margin-bottom:7px;}
.contact .direct a:hover{color:var(--accent);}

/* ==========================================================================
   FOOTER
   ========================================================================== */
footer{border-top:1px solid var(--rule);padding:56px 0 44px;}
.footer-grid{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;}
.footer-grid>div:first-child{max-width:300px;}
.footer-grid .logo{margin-bottom:14px;}
.footer-grid .blurb{color:var(--muted);font-size:14px;}
.footer-cols{display:flex;gap:64px;flex-wrap:wrap;}
.footer-col h5{
  font-family:var(--mono);font-size:10.5px;text-transform:uppercase;letter-spacing:0.1em;
  color:var(--muted);font-weight:400;margin-bottom:14px;
}
.footer-col a,.footer-col span{display:block;color:var(--ink-2);font-size:14px;margin-bottom:9px;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid var(--rule-soft);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-family:var(--mono);font-size:11px;color:var(--muted);letter-spacing:0.04em;
}

/* ==========================================================================
   ARTICLE PAGE — how-llms-work.html
   ========================================================================== */
.article-hero{padding:96px 0 72px;}
@media (max-width:700px){.article-hero{padding:64px 0 56px;}}
.back-link{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;
  color:var(--muted);margin-bottom:32px;transition:color .2s;
}
.back-link:hover{color:var(--accent);}
.article-hero h1{font-size:clamp(38px,5.4vw,66px);max-width:16ch;}
.article-hero .lead{max-width:56ch;color:var(--ink-2);font-size:18px;margin-top:28px;}

.prose{padding:76px 0;border-top:1px solid var(--rule-soft);}
@media (max-width:700px){.prose{padding:58px 0;}}
.prose h2{font-size:clamp(28px,3.6vw,40px);max-width:20ch;margin-bottom:24px;}
.prose p{color:var(--ink-2);font-size:16.5px;max-width:64ch;margin-bottom:18px;}

/* three approaches */
.approaches{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--rule);border:1px solid var(--rule);border-radius:14px;overflow:hidden;margin-top:44px;}
@media (max-width:860px){.approaches{grid-template-columns:1fr;}}
.appr{background:var(--paper);padding:32px 28px 34px;display:flex;flex-direction:column;}
.appr .tag{
  font-family:var(--mono);font-size:10.5px;text-transform:uppercase;letter-spacing:0.09em;
  color:var(--accent);border:1px solid var(--accent-line);background:rgba(11,117,102,0.05);
  padding:4px 11px;border-radius:999px;align-self:flex-start;margin-bottom:20px;
}
.appr h3{font-size:24px;margin-bottom:12px;}
.appr>p{color:var(--ink-2);font-size:15px;margin-bottom:22px;}
.appr .best{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--rule);
  font-size:13.5px;color:var(--muted);
}
.appr .best strong{color:var(--amber);font-weight:600;}

/* decision aid */
.decide{margin-top:52px;border-top:1px solid var(--rule);}
.decide .dr{
  display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;
  padding:20px 4px;border-bottom:1px solid var(--rule);
}
.decide .dr .q{font-size:16px;color:var(--ink);}
.decide .dr .a{
  font-family:var(--mono);font-size:11.5px;color:var(--accent);letter-spacing:0.04em;
  background:var(--accent-soft);border:1px solid var(--accent-line);
  padding:6px 13px;border-radius:999px;white-space:nowrap;
}
@media (max-width:640px){.decide .dr{grid-template-columns:1fr;gap:10px;}.decide .dr .a{justify-self:start;}}

/* process timeline */
.timeline{border-top:1px solid var(--rule);margin-top:44px;}
.tstep{display:grid;grid-template-columns:64px 1fr;gap:28px;padding:30px 4px;border-bottom:1px solid var(--rule);}
@media (max-width:600px){.tstep{grid-template-columns:44px 1fr;gap:18px;}}
.tstep .num{font-family:var(--mono);font-size:12px;color:var(--accent);padding-top:7px;}
.tstep h4{font-family:var(--serif);font-size:22px;font-weight:400;letter-spacing:-0.015em;margin-bottom:9px;}
.tstep p{color:var(--ink-2);font-size:15px;max-width:58ch;}

/* faq */
.faq{border-top:1px solid var(--rule);margin-top:40px;}
.faq .q{padding:26px 4px;border-bottom:1px solid var(--rule);}
.faq .q h4{font-family:var(--serif);font-size:21px;font-weight:400;letter-spacing:-0.015em;margin-bottom:10px;}
.faq .q p{color:var(--ink-2);font-size:15px;max-width:62ch;}

/* ==========================================================================
   MOTION
   ========================================================================== */
html.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .75s ease,transform .75s ease;}
html.js .reveal.in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{animation:none!important;transition:none!important;}
  html.js .reveal{opacity:1;transform:none;}
}