/* ============================================================
   Fractal Engine — v5
   Palette is sampled from the indicator itself:
   orchid = consensus path, amber = scenario paths, teal = range cloud
   ============================================================ */

:root{
  --paper:#eeeef3;
  --paper-2:#e6e6ee;
  --panel:#ffffff;
  --ink:#191b22;
  --ink-2:#4e5262;
  --ink-3:#868b9d;
  --rule:#d6d7e0;
  --rule-2:#e7e8ee;

  --orchid:#a01cb4;
  --orchid-hi:#e870fc;
  --orchid-wash:#f9ecfc;
  --amber:#c9761a;
  --teal:#089981;
  --teal-wash:#b6e1da;
  --rose:#f23645;

  --shell:1180px;
  --gap:clamp(18px,4vw,28px);

  --sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --serif:"Newsreader",Georgia,"Times New Roman",serif;
  --mono:"IBM Plex Mono",ui-monospace,"SF Mono",Menlo,monospace;
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-family:var(--serif);font-weight:500;letter-spacing:-.015em;margin:0}
p{margin:0}
dl,dd,dt,ol,ul{margin:0;padding:0}
li{list-style:none}

.num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:.94em}

.shell{width:min(100% - 40px,var(--shell));margin-inline:auto}

.skip{
  position:absolute;left:-9999px;top:0;z-index:99;
  background:var(--ink);color:#fff;padding:10px 16px;border-radius:3px;
}
.skip:focus{left:12px;top:12px}

:where(a,button,summary,[role="tab"]):focus-visible{
  outline:2px solid var(--orchid);
  outline-offset:3px;
  border-radius:2px;
}

/* ---------------------------------------------------------- buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--sans);font-size:15px;font-weight:500;
  padding:13px 22px;border-radius:4px;border:1px solid transparent;
  cursor:pointer;transition:background .16s ease,color .16s ease,border-color .16s ease;
  white-space:nowrap;
}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-solid{background:var(--ink);color:#fff}
.btn-solid:hover{background:var(--orchid)}
.btn-line{border-color:var(--rule);color:var(--ink);background:transparent}
.btn-line:hover{border-color:var(--ink);background:rgba(255,255,255,.6)}
.btn-invert{background:#fff;color:var(--ink)}
.btn-invert:hover{background:var(--orchid-wash);color:var(--orchid)}

/* ---------------------------------------------------------- masthead */
.masthead{
  position:sticky;top:0;z-index:30;
  background:color-mix(in srgb,var(--paper) 88%,transparent);
  backdrop-filter:saturate(1.4) blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color .2s ease,background .2s ease;
}
.masthead.is-stuck{border-bottom-color:var(--rule);background:color-mix(in srgb,var(--paper) 96%,transparent)}
.masthead-in{display:flex;align-items:center;gap:24px;min-height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink)}
.brand-mark{width:26px;height:26px;color:var(--orchid);flex:none}
.brand-word{
  font-family:var(--serif);font-size:19px;font-weight:600;letter-spacing:-.02em;
}
.masthead-nav{
  margin-left:auto;display:flex;gap:26px;
  font-size:14.5px;color:var(--ink-2);
}
.masthead-nav a{padding:4px 0;border-bottom:1px solid transparent}
.masthead-nav a:hover{color:var(--ink);border-bottom-color:var(--orchid)}
.masthead .btn{flex:none}

/* ---------------------------------------------------------- side rail */
.rail{
  position:fixed;left:24px;top:50%;transform:translateY(-50%);
  z-index:20;display:none;
}
.rail-line{position:absolute;left:3.5px;top:4px;bottom:4px;width:1px;background:var(--rule)}
.rail-ticks{display:grid;gap:20px}
.rail-ticks li{display:flex;align-items:center;gap:11px;position:relative}
.rail-ticks i{
  width:8px;height:8px;border:1px solid var(--rule);background:var(--paper);
  border-radius:50%;flex:none;transition:.2s ease;
}
.rail-ticks span{
  font-size:11.5px;letter-spacing:.02em;color:var(--ink-3);
  opacity:0;transform:translateX(-4px);transition:.2s ease;
}
.rail-ticks li.is-on i{background:var(--orchid);border-color:var(--orchid);transform:scale(1.25)}
.rail-ticks li.is-on span{opacity:1;transform:none;color:var(--ink-2)}
.rail:hover span{opacity:1;transform:none}
@media (min-width:1480px){.rail{display:block}}

/* ---------------------------------------------------------- hero */
.hero{padding:clamp(44px,6vw,78px) 0 0}

.meta-line{
  display:flex;align-items:center;gap:10px;
  font-size:13.5px;color:var(--ink-2);margin-bottom:26px;
}
.tick{width:22px;height:1px;background:var(--orchid);flex:none}

.hero h1{
  font-size:clamp(40px,6.4vw,78px);
  line-height:1.02;
  letter-spacing:-.03em;
  text-wrap:balance;
}

.hero-body{
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:clamp(26px,5vw,60px);
  align-items:start;
  margin-top:clamp(24px,3vw,34px);
  padding-bottom:clamp(30px,4vw,44px);
}
.lead{
  font-family:var(--serif);
  font-size:clamp(18px,1.45vw,21px);
  line-height:1.62;
  color:var(--ink-2);
  max-width:62ch;
}
.hero-side{padding-top:4px}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap}
.hero-note{margin-top:16px;font-size:13.5px;color:var(--ink-3);max-width:34ch;line-height:1.6}

/* ---------------------------------------------------------- chart */
.chart{
  margin:0;
  background:var(--panel);
  border:1px solid var(--rule);
  border-radius:10px;
  overflow:hidden;
  box-shadow:0 1px 0 rgba(25,27,34,.03),0 18px 44px -30px rgba(25,27,34,.45);
}
.chart-head{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:12px 16px;border-bottom:1px solid var(--rule-2);
  background:linear-gradient(180deg,#fff,#fbfbfd);
}
.chart-title{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:500;color:var(--ink-2);
}
.chart-title::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--teal);
  box-shadow:0 0 0 4px rgba(8,153,129,.14);
}
.chart-hint{font-size:12.5px;color:var(--ink-3)}

.chart-scroll{overflow-x:auto;overscroll-behavior-x:contain}
.chart-stage{position:relative;min-width:720px}
.chart-stage img{width:100%}

.pin{
  position:absolute;left:var(--x);top:var(--y);
  width:26px;height:26px;margin:-13px 0 0 -13px;
  border-radius:50%;border:1px solid var(--orchid);
  background:var(--orchid);color:#fff;
  font-family:var(--mono);font-size:12px;line-height:1;
  display:grid;place-items:center;cursor:pointer;padding:0;
  box-shadow:0 0 0 3px rgba(255,255,255,.9);
  transition:transform .16s ease,background .16s ease;
}
.pin:hover{transform:scale(1.15)}
.pin.is-on{background:var(--ink);border-color:var(--ink)}
.pin::after{
  content:"";position:absolute;inset:-9px;border-radius:50%;
  border:1px solid var(--orchid);opacity:0;
}
.pin.is-on::after{opacity:.45}

.chart-caption{
  padding:12px 16px;border-top:1px solid var(--rule-2);
  font-size:13.5px;color:var(--ink-2);background:#fbfbfd;
}
.chart-caption b{font-weight:500;color:var(--ink)}

/* ---------------------------------------------------------- inspector */
.inspector{margin-top:14px;padding-bottom:clamp(44px,6vw,76px)}
.chips{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:14px}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--sans);font-size:13px;color:var(--ink-2);
  background:transparent;border:1px solid var(--rule);border-radius:4px;
  padding:7px 12px;cursor:pointer;transition:.16s ease;
}
.chip:hover{border-color:var(--ink-3);background:rgba(255,255,255,.6)}
.chip.is-on{background:var(--ink);border-color:var(--ink);color:#fff}
.sw{width:13px;height:9px;flex:none;border-radius:1px}
.sw-window{border:1px dashed var(--orchid-hi);background:var(--orchid-wash)}
.sw-amber{height:2px;background:var(--amber);border-radius:2px}
.sw-magenta{height:3px;background:var(--orchid-hi);border-radius:2px}
.sw-cloud{background:var(--teal-wash)}
.sw-band{background:#fbdde8}
.sw-tag{background:var(--orchid-hi)}
.sw-table{background:linear-gradient(180deg,#bed0ff 50%,#fff 50%);border:1px solid var(--rule)}

.inspector-body{
  border-top:1px solid var(--rule);
  padding-top:20px;
}
.spot{display:none}
.spot.is-on{display:block}
.spot h3{font-size:23px;margin-bottom:12px}
.spot-cols{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:clamp(16px,3vw,44px);
}
.spot-cols p{color:var(--ink-2);max-width:56ch;font-size:15.5px}
.spot-cols b{color:var(--ink);font-weight:600}
.spot-cols a{color:var(--orchid);border-bottom:1px solid currentColor}

/* ---------------------------------------------------------- facts strip */
.facts{
  border-block:1px solid var(--rule);
  background:var(--paper-2);
}
.facts-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
}
.facts-grid > div{
  padding:22px 26px 22px 0;border-left:1px solid var(--rule);padding-left:22px;
}
.facts-grid > div:first-child{border-left:0;padding-left:0}
.facts dt{font-size:12px;color:var(--ink-3);margin-bottom:5px;letter-spacing:.01em}
.facts dd{font-size:14.5px;color:var(--ink);line-height:1.5;max-width:26ch}

/* ---------------------------------------------------------- bands */
.band{padding:clamp(56px,8vw,104px) 0}
.band-alt{background:var(--paper-2);border-block:1px solid var(--rule)}

.band-head{max-width:58ch;margin-bottom:clamp(30px,4vw,48px)}
.band-head h2{font-size:clamp(30px,3.6vw,46px);line-height:1.08;letter-spacing:-.025em}
.band-head p{margin-top:14px;color:var(--ink-2);font-size:16.5px;max-width:56ch}

/* steps */
.steps{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:0;border-top:1px solid var(--rule);
}
.steps li{
  padding:26px 24px 0 0;border-right:1px solid var(--rule-2);padding-right:24px;
  position:relative;
}
.steps li:last-child{border-right:0}
.steps li + li{padding-left:24px}
.steps li::before{
  content:"";position:absolute;top:-1px;left:0;width:34px;height:2px;background:var(--orchid);
}
.steps li + li::before{left:24px}
.step-n{display:block;font-size:12px;color:var(--ink-3);margin-bottom:14px}
.steps h3{font-size:21px;margin-bottom:9px}
.steps p{color:var(--ink-2);font-size:14.8px;line-height:1.68}
.tag{
  display:inline-block;padding:1px 5px;border-radius:3px;
  background:var(--orchid-wash);color:var(--orchid);font-size:12px;
}

/* panel reference */
.ref{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:clamp(24px,3.2vw,44px);
}
.ref-group{
  background:var(--panel);border:1px solid var(--rule);border-radius:6px;
  padding:clamp(20px,2.4vw,28px);
}
.ref-group h3{font-size:20px}
.ref-note{margin:5px 0 18px;font-size:13.5px;color:var(--ink-3)}
.ref-list{display:grid;gap:0}
.ref-list > div{
  display:grid;grid-template-columns:96px minmax(0,1fr);gap:16px;
  padding:12px 0;border-top:1px solid var(--rule-2);align-items:baseline;
}
.ref-list > div:first-child{border-top:0;padding-top:0}
.ref-list dt{color:var(--orchid);font-size:13.5px}
.ref-list dd{color:var(--ink-2);font-size:14.6px;line-height:1.6}
.ref-rule{
  margin-top:clamp(24px,3vw,36px);
  padding-left:20px;border-left:2px solid var(--orchid);
  font-family:var(--serif);font-size:clamp(17px,1.5vw,20px);line-height:1.6;
  color:var(--ink);max-width:72ch;
}

/* uses */
.uses{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:clamp(22px,3vw,40px);
}
.uses article{border-top:2px solid var(--ink);padding-top:18px}
.uses h3{font-size:21px;margin-bottom:10px;max-width:20ch}
.uses p{color:var(--ink-2);font-size:15px;max-width:44ch}

/* limits */
.band-dark{background:var(--ink);color:#fff;border-block:0}
.band-dark h2{color:#fff}
.limits-in{
  display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);
  gap:clamp(26px,5vw,64px);align-items:start;
}
.limits-copy h2{font-size:clamp(28px,3.2vw,42px);line-height:1.08;letter-spacing:-.025em}
.limits-copy p{margin-top:14px;color:rgba(255,255,255,.62);font-size:15.5px;max-width:34ch}
.limits-list{display:grid}
.limits-list li{
  padding:18px 0;border-top:1px solid rgba(255,255,255,.14);
  color:rgba(255,255,255,.66);font-size:15.5px;line-height:1.68;
}
.limits-list li:first-child{border-top:0;padding-top:0}
.limits-list b{color:#fff;font-weight:500;display:block;font-family:var(--serif);font-size:18px;margin-bottom:4px}

/* plans */
.plans{
  display:grid;grid-template-columns:repeat(2,minmax(0,.8fr)) minmax(0,1.1fr);
  gap:clamp(18px,2.4vw,26px);align-items:stretch;
}
.plan{
  background:var(--panel);border:1px solid var(--rule);border-radius:6px;
  padding:clamp(22px,2.4vw,28px);position:relative;
}
.plan-pick{border-color:var(--orchid);box-shadow:0 0 0 1px var(--orchid)}
.plan-flag{
  position:absolute;top:-11px;left:clamp(22px,2.4vw,28px);
  background:var(--orchid);color:#fff;font-size:11.5px;padding:3px 9px;border-radius:3px;
}
.plan h3{font-size:18px;color:var(--ink-2);font-family:var(--sans);font-weight:500;letter-spacing:0}
.price{display:flex;align-items:baseline;gap:4px;margin:14px 0 10px}
.cur{font-family:var(--mono);font-size:20px;color:var(--ink-3);align-self:flex-start;margin-top:8px}
.amount{font-size:clamp(46px,5vw,62px);line-height:1;letter-spacing:-.04em;font-weight:500}
.per{font-size:14px;color:var(--ink-3);margin-left:6px}
.plan-note{font-size:14px;color:var(--ink-2)}
.plan-includes{
  border:1px dashed var(--rule);border-radius:6px;padding:clamp(22px,2.4vw,28px);
  background:transparent;
}
.plan-includes h3{font-size:18px;font-family:var(--sans);font-weight:500;color:var(--ink-2);letter-spacing:0;margin-bottom:14px}
.plan-includes li{
  padding:9px 0 9px 22px;border-top:1px solid var(--rule-2);
  font-size:14.6px;color:var(--ink-2);position:relative;line-height:1.55;
}
.plan-includes li:first-child{border-top:0}
.plan-includes li::before{
  content:"";position:absolute;left:2px;top:18px;width:9px;height:1px;background:var(--orchid);
}

.howto{
  margin-top:clamp(26px,3vw,40px);
  border-top:1px solid var(--rule);padding-top:clamp(24px,3vw,34px);
  display:grid;grid-template-columns:minmax(0,1fr) auto;
  gap:24px;align-items:end;
}
.howto h3{font-size:20px;margin-bottom:16px;grid-column:1/-1}
.howto ol{display:grid;gap:11px;counter-reset:s}
.howto li{
  counter-increment:s;position:relative;padding-left:34px;
  font-size:15px;color:var(--ink-2);line-height:1.6;max-width:62ch;
}
.howto li::before{
  content:counter(s,decimal-leading-zero);
  position:absolute;left:0;top:1px;font-family:var(--mono);font-size:12px;color:var(--ink-3);
}
.howto b{color:var(--ink);font-weight:600}
.howto .btn{align-self:end}

/* faq */
.faq-in{display:grid;grid-template-columns:minmax(0,.5fr) minmax(0,1.5fr);gap:clamp(24px,5vw,64px);align-items:start}
.faq-in h2{font-size:clamp(28px,3.2vw,42px);line-height:1.08;letter-spacing:-.025em}
.faq{display:grid;border-top:1px solid var(--rule)}
.faq details{border-bottom:1px solid var(--rule)}
.faq summary{
  list-style:none;cursor:pointer;padding:18px 40px 18px 0;position:relative;
  font-family:var(--serif);font-size:19px;color:var(--ink);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";position:absolute;right:6px;top:50%;width:11px;height:11px;
  border-right:1px solid var(--ink-3);border-bottom:1px solid var(--ink-3);
  transform:translateY(-70%) rotate(45deg);transition:transform .18s ease;
}
.faq details[open] summary::after{transform:translateY(-30%) rotate(225deg)}
.faq summary:hover{color:var(--orchid)}
.faq details > div{padding:0 0 20px}
.faq p{color:var(--ink-2);font-size:15.4px;max-width:66ch;line-height:1.72}

/* closer */
.closer{background:var(--ink);color:#fff;padding:clamp(56px,7vw,90px) 0}
.closer-in{display:grid;gap:16px;justify-items:start}
.closer h2,.closer p{max-width:20ch}
.closer p{max-width:52ch}
.closer h2{color:#fff;font-size:clamp(30px,4vw,52px);line-height:1.04;letter-spacing:-.03em}
.closer p{color:rgba(255,255,255,.62);font-size:16.5px}
.closer .btn{margin-top:8px}

/* footer */
.foot{background:var(--ink);color:rgba(255,255,255,.5);padding-bottom:40px}
.foot-in{border-top:1px solid rgba(255,255,255,.14);padding-top:26px;display:grid;gap:22px}
.disclaimer{font-size:12.8px;line-height:1.7;max-width:88ch;color:rgba(255,255,255,.45)}
.foot-meta{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:13.5px}
.foot-meta .brand-word{color:#fff;font-size:17px}
.foot-meta a{color:var(--orchid-hi)}
.foot-meta a:hover{text-decoration:underline}

/* mobile dock */
.dock{
  position:fixed;left:0;right:0;bottom:0;z-index:40;display:none;
  align-items:center;justify-content:space-between;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:color-mix(in srgb,var(--paper) 94%,transparent);
  backdrop-filter:blur(12px);border-top:1px solid var(--rule);
  transform:translateY(110%);transition:transform .25s ease;
}
.dock.is-up{transform:none}
.dock span{font-size:13.5px;color:var(--ink-2)}
.dock b{font-weight:500;color:var(--ink)}

/* ============================================================ responsive */
@media (max-width:1080px){
  .masthead-nav{display:none}
  .facts-grid{grid-template-columns:repeat(2,1fr)}
  .facts-grid > div:nth-child(3){border-left:0;padding-left:0}
  .facts-grid > div:nth-child(-n+2){border-bottom:1px solid var(--rule)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .steps li:nth-child(2n){border-right:0}
  .steps li:nth-child(n+3){margin-top:26px;border-top:1px solid var(--rule);padding-top:26px}
  .steps li:nth-child(n+3)::before{display:none}
  .uses{grid-template-columns:1fr}
  .uses article{max-width:none}
  .plans{grid-template-columns:repeat(2,1fr)}
  .plan-includes{grid-column:1/-1}
  .limits-in,.faq-in,.hero-body{grid-template-columns:1fr}
  .lead{max-width:68ch}
}

@media (max-width:760px){
  .hero{padding-top:34px}
  .hero h1{max-width:none}
  .facts-grid{grid-template-columns:1fr}
  .facts-grid > div{border-left:0;padding-left:0;padding-block:16px;border-top:1px solid var(--rule);border-bottom:0!important}
  .facts-grid > div:first-child{border-top:0}
  .facts dd{max-width:none}
  .steps{grid-template-columns:1fr}
  .steps li{border-right:0;padding-inline:0!important}
  .steps li + li{margin-top:24px;border-top:1px solid var(--rule);padding-top:26px}
  .steps li::before,.steps li + li::before{display:none}
  .ref,.spot-cols{grid-template-columns:1fr}
  .plans{grid-template-columns:1fr}
  .howto{grid-template-columns:1fr}
  .howto .btn{width:100%}
  .chart-hint{display:none}
  .lead{font-size:17px;line-height:1.58}
  .hero-note{max-width:none}
  .hero-actions .btn{flex:1 1 100%}
  .dock{display:flex}
  body{padding-bottom:64px}
  .chart-scroll{
    -webkit-mask-image:linear-gradient(90deg,#000 92%,transparent);
    mask-image:linear-gradient(90deg,#000 92%,transparent);
  }
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

@media print{
  .masthead,.rail,.dock,.chips{display:none}
  body{background:#fff}
  .spot{display:block!important;page-break-inside:avoid}
}