/* ==========================================================================
   Quwa Smart Services — design system
   Dark-first, large-type, motion-on-scroll. Built to feel engineered.
   ========================================================================== */

/* ---------- tokens ---------- */
:root{
  --ink:#f2f6fb;
  --ink-2:#aeb9c8;
  --ink-3:#7b8798;
  --ink-4:#4e5867;

  --bg:#05070b;
  --bg-1:#0a0e15;
  --bg-2:#10161f;
  --bg-3:#161e2a;
  --line:rgba(255,255,255,.09);
  --line-2:rgba(255,255,255,.16);

  --brand:#19c8e8;          /* QSS cyan */
  --brand-2:#0e8fb4;
  --brand-3:#67e8f9;
  --teal:#2dd4a7;
  --warm:#ff9f45;           /* thermal warm */
  --hot:#ff5f45;
  --violet:#8b7dff;

  --ok:#2dd4a7;
  --warn:#ffc247;
  --bad:#ff6b5b;

  --wrap:1180px;
  --wrap-narrow:760px;
  --r:16px;
  --r-lg:26px;
  --r-sm:10px;

  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);

  --shadow:0 1px 2px rgba(0,0,0,.4),0 12px 40px -12px rgba(0,0,0,.6);
  --glow:0 0 0 1px rgba(25,200,232,.22),0 18px 60px -20px rgba(25,200,232,.35);
}

/* Light surfaces used for alternating sections */
.inverse{
  --ink:#0a0f16;
  --ink-2:#4a5666;
  --ink-3:#6b7787;
  --ink-4:#9aa5b3;
  --bg:#f7f9fb;
  --bg-1:#ffffff;
  --bg-2:#f1f4f8;
  --bg-3:#e7ecf2;
  --line:rgba(6,12,20,.10);
  --line-2:rgba(6,12,20,.18);
  --brand-3:#0e8fb4;
  --shadow:0 1px 2px rgba(10,20,35,.06),0 16px 44px -18px rgba(10,20,35,.20);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--sans);font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  font-feature-settings:"cv02","cv03","cv04","ss01";
  overflow-x:hidden;
}
img,svg,canvas{display:block;max-width:100%}
img{height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}

/* ---------- layout ---------- */
.wrap{width:min(100% - 44px,var(--wrap));margin-inline:auto}
.wrap-narrow{width:min(100% - 44px,var(--wrap-narrow));margin-inline:auto}
.section{position:relative;padding:clamp(72px,10vw,150px) 0;background:var(--bg);color:var(--ink)}
.section--tight{padding:clamp(52px,6vw,90px) 0}
.section--flush{padding-top:0}
.hr{height:1px;background:var(--line);border:0;margin:0}

/* ---------- type ---------- */
.eyebrow{
  font:600 12px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;
  color:var(--brand-3);display:flex;align-items:center;gap:10px;margin-bottom:20px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor;opacity:.6;flex:none}
.eyebrow--plain::before{display:none}

.d1{font-size:clamp(2.9rem,7.4vw,5.6rem);line-height:1.02;letter-spacing:-.035em;font-weight:700}
.h1{font-size:clamp(2.3rem,5vw,3.9rem);line-height:1.06;letter-spacing:-.03em;font-weight:700}
.h2{font-size:clamp(1.65rem,3.1vw,2.6rem);line-height:1.12;letter-spacing:-.024em;font-weight:660}
.h3{font-size:clamp(1.16rem,1.7vw,1.42rem);line-height:1.24;letter-spacing:-.014em;font-weight:640}
.h4{font-size:1.02rem;line-height:1.32;letter-spacing:-.008em;font-weight:640}

.lede{font-size:clamp(1.08rem,1.75vw,1.42rem);line-height:1.5;color:var(--ink-2);letter-spacing:-.012em}
.muted{color:var(--ink-2)}
.dim{color:var(--ink-3)}
.tiny{font-size:.8rem;line-height:1.5;color:var(--ink-3)}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.mw-60{max-width:60ch}.mw-52{max-width:52ch}.mw-44{max-width:44ch}
.center{text-align:center}
.center .eyebrow{justify-content:center}

.grad{
  background:linear-gradient(98deg,#67e8f9 0%,#22c9e8 46%,#2dd4a7 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  padding:12px 22px;border-radius:999px;
  font-weight:580;font-size:.95rem;letter-spacing:-.005em;
  border:1px solid transparent;
  transition:transform .25s var(--ease),background .25s,border-color .25s,box-shadow .25s,opacity .25s;
  will-change:transform;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--primary{background:var(--brand);color:#03151b;box-shadow:0 8px 30px -10px rgba(25,200,232,.7)}
.btn--primary:hover{background:var(--brand-3);box-shadow:0 14px 40px -10px rgba(25,200,232,.8)}
.btn--ghost{border-color:var(--line-2);color:var(--ink)}
.btn--ghost:hover{border-color:var(--brand);background:rgba(25,200,232,.09)}
.btn--text{padding:0;color:var(--brand-3);font-weight:580}
.btn--text:hover{transform:none;gap:13px}
.btn__arrow{transition:transform .3s var(--ease)}
.btn:hover .btn__arrow{transform:translateX(4px)}
.btnrow{display:flex;flex-wrap:wrap;gap:13px;align-items:center}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:80;
  background:rgba(5,7,11,.62);
  backdrop-filter:saturate(180%) blur(22px);
  -webkit-backdrop-filter:saturate(180%) blur(22px);
  border-bottom:1px solid transparent;
  transition:background .3s,border-color .3s;
}
.nav.is-stuck{background:rgba(5,7,11,.9);border-bottom-color:var(--line)}
.nav__in{display:flex;align-items:center;gap:26px;height:62px}
.brand{display:flex;align-items:center;gap:11px;font-weight:680;letter-spacing:-.022em;font-size:1.06rem;color:#fff;flex:none}
.brand__mark{width:27px;height:27px;flex:none}
.brand small{display:block;font:500 10px/1 var(--mono);letter-spacing:.13em;color:var(--ink-3);text-transform:uppercase;margin-top:3px}
.nav__links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav__link{
  padding:8px 14px;border-radius:999px;font-size:.9rem;font-weight:520;color:var(--ink-2);
  transition:color .2s,background .2s;
}
.nav__link:hover,.nav__link[aria-current="page"]{color:#fff;background:rgba(255,255,255,.07)}
.nav__cta{margin-left:8px}
.nav__toggle{display:none;margin-left:auto;padding:8px;border-radius:9px}
.nav__toggle:hover{background:rgba(255,255,255,.07)}

/* dropdown */
.navdrop{position:relative}
.navdrop__panel{
  position:absolute;top:calc(100% + 10px);left:50%;transform:translate(-50%,-8px);
  width:min(92vw,660px);padding:14px;border-radius:var(--r-lg);
  background:rgba(13,18,26,.95);backdrop-filter:blur(24px);
  border:1px solid var(--line-2);box-shadow:var(--shadow);
  display:grid;grid-template-columns:1fr 1fr;gap:4px;
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.navdrop:hover .navdrop__panel,.navdrop:focus-within .navdrop__panel{
  opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0);
}
.navdrop__item{display:block;padding:11px 13px;border-radius:12px;transition:background .18s}
.navdrop__item:hover{background:rgba(255,255,255,.07)}
.navdrop__item b{display:block;font-size:.92rem;font-weight:600;color:#fff;letter-spacing:-.01em}
.navdrop__item span{display:block;font-size:.79rem;color:var(--ink-3);margin-top:2px;line-height:1.4}

/* ---------- hero ---------- */
.hero{position:relative;min-height:min(100svh,860px);display:flex;align-items:center;overflow:hidden;background:var(--bg)}
.hero__canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.62}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(120% 78% at 50% 0%,transparent 24%,rgba(5,7,11,.72) 78%,var(--bg) 100%),
    linear-gradient(180deg,rgba(5,7,11,.55) 0%,transparent 26%,transparent 62%,var(--bg) 100%);
}
.hero__in{position:relative;z-index:2;padding:120px 0 90px;width:100%}
.hero__badge{
  display:inline-flex;align-items:center;gap:9px;padding:6px 15px 6px 7px;border-radius:999px;
  background:rgba(255,255,255,.06);border:1px solid var(--line-2);
  font-size:.79rem;color:var(--ink-2);margin-bottom:30px;backdrop-filter:blur(10px);
}
.hero__badge b{
  padding:3px 9px;border-radius:999px;background:var(--brand);color:#03151b;
  font:700 10px/1.4 var(--mono);letter-spacing:.09em;text-transform:uppercase;
  white-space:nowrap;flex:none;
}
.hero .lede{max-width:60ch;margin-top:26px}
.hero .btnrow{margin-top:40px}

/* scroll cue */
.scrollcue{
  position:absolute;bottom:30px;left:50%;transform:translateX(-50%);z-index:3;
  display:flex;flex-direction:column;align-items:center;gap:9px;
  font:500 10px/1 var(--mono);letter-spacing:.18em;text-transform:uppercase;color:var(--ink-4);
}
.scrollcue i{display:block;width:1px;height:38px;background:linear-gradient(var(--ink-4),transparent);animation:cue 2.4s var(--ease) infinite}
@keyframes cue{0%{transform:scaleY(.2);transform-origin:top;opacity:0}40%{transform:scaleY(1);opacity:1}100%{transform:scaleY(1);transform-origin:bottom;opacity:0}}

/* ---------- stat rows ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:2px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.stat{background:var(--bg-1);padding:26px 22px}
.stat__v{font:700 clamp(1.7rem,3.4vw,2.5rem)/1 var(--sans);letter-spacing:-.03em;color:var(--ink);font-variant-numeric:tabular-nums}
.stat__v .u{font-size:.5em;font-weight:600;color:var(--ink-3);margin-left:5px;letter-spacing:0}
.stat__l{margin-top:9px;font-size:.83rem;color:var(--ink-3);line-height:1.4}
.stat--brand .stat__v{color:var(--brand-3)}
.stat--warn .stat__v{color:var(--warn)}
.stat--bad .stat__v{color:var(--bad)}

/* ---------- cards ---------- */
/* Explicit column counts. auto-fit packed six-card sections as 4+2, which reads
   as a mistake rather than a layout. */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:1000px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:660px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:minmax(0,1fr)}
}

.card{
  position:relative;background:var(--bg-1);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:28px;overflow:hidden;
  transition:border-color .3s,transform .4s var(--ease),background .3s;
}
.card--link:hover{border-color:var(--line-2);transform:translateY(-3px)}
.card__ic{
  width:40px;height:40px;border-radius:11px;display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(140deg,rgba(25,200,232,.20),rgba(45,212,167,.10));
  border:1px solid rgba(25,200,232,.24);color:var(--brand-3);
}
.card__ic svg{width:19px;height:19px}
.card .h3{margin-bottom:9px}
.card p{color:var(--ink-2);font-size:.95rem}
.card__tag{font:600 10px/1 var(--mono);letter-spacing:.13em;text-transform:uppercase;color:var(--brand-3);margin-bottom:13px;display:block}
.card__foot{margin-top:20px;padding-top:17px;border-top:1px solid var(--line)}

.ticks{margin-top:18px;display:grid;gap:9px}
.ticks li{position:relative;padding-left:23px;font-size:.9rem;color:var(--ink-2);line-height:1.5}
.ticks li::before{
  content:"";position:absolute;left:0;top:.58em;width:11px;height:6px;
  border-left:1.6px solid var(--brand);border-bottom:1.6px solid var(--brand);
  transform:rotate(-45deg);
}

/* severity pills */
.pill{
  display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;
  font:650 10px/1.5 var(--mono);letter-spacing:.1em;text-transform:uppercase;
  border:1px solid currentColor;
}
.pill--crit{color:var(--bad);background:rgba(255,107,91,.10)}
.pill--high{color:var(--warn);background:rgba(255,194,71,.10)}
.pill--med{color:var(--brand-3);background:rgba(25,200,232,.10)}
.pill--strat{color:var(--violet);background:rgba(139,125,255,.12)}
.pill--ok{color:var(--ok);background:rgba(45,212,167,.10)}

/* ---------- figure / media ---------- */
.fig{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--bg-1)}
.fig img{width:100%;display:block}
.fig figcaption{padding:15px 20px;font-size:.83rem;color:var(--ink-3);border-top:1px solid var(--line);line-height:1.5}
.fig--ir img{filter:saturate(1.06) contrast(1.03)}

.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4.4vw,64px);align-items:center}
.split--wide{grid-template-columns:1.1fr .9fr}
.split--rev>*:first-child{order:2}

/* ---------- video (click-to-load facade) ----------
   Nothing loads from Vimeo until the visitor asks for it: the poster is
   self-hosted and the iframe is only injected on play. The play control is the
   brand mark itself — the aperture is already a triangle in a ring. */
.video{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);background:#000;isolation:isolate;
}
.video__ratio{position:relative;width:100%;padding-top:56.25%}
.video__poster{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  transition:transform .9s var(--ease-out),filter .6s var(--ease);
}
.video:hover .video__poster{transform:scale(1.03);filter:brightness(.82)}
.video__scrim{
  position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(5,7,11,.34) 0%,rgba(5,7,11,.05) 34%,rgba(5,7,11,.72) 100%);
}
.video__btn{
  position:absolute;inset:0;width:100%;height:100%;display:grid;place-items:center;
  border:0;background:none;cursor:pointer;z-index:2;
}
.video__mark{width:88px;height:88px;filter:drop-shadow(0 10px 34px rgba(0,0,0,.6));
  transition:transform .45s var(--ease-out)}
.video__btn:hover .video__mark{transform:scale(1.09)}
.video__btn:active .video__mark{transform:scale(1.02)}
.video__ring{transform-origin:50% 50%;transition:stroke .35s}
.video__btn:hover .video__ring{stroke:#fff}
.video__meta{
  position:absolute;left:0;right:0;bottom:0;z-index:2;pointer-events:none;
  padding:26px 28px;display:flex;justify-content:space-between;align-items:flex-end;gap:18px;
}
.video__t{font-size:1.06rem;font-weight:620;letter-spacing:-.014em;color:#fff;line-height:1.3}
.video__s{font-size:.8rem;color:rgba(255,255,255,.68);margin-top:5px}
.video__dur{
  font:600 .74rem/1 var(--mono);letter-spacing:.08em;color:#fff;
  background:rgba(0,0,0,.42);border:1px solid rgba(255,255,255,.24);
  padding:6px 11px;border-radius:999px;backdrop-filter:blur(8px);flex:none;
}
.video.is-live .video__poster,.video.is-live .video__scrim,
.video.is-live .video__btn,.video.is-live .video__meta{display:none}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0;z-index:3}
.video__cap{
  padding:15px 20px;font-size:.83rem;color:var(--ink-3);line-height:1.5;
  border-top:1px solid var(--line);background:var(--bg-1);
}
@media (max-width:640px){ .video__mark{width:62px;height:62px} .video__meta{padding:18px} }

/* ---------- news ---------- */
.news{display:grid;gap:2px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.newsitem{
  background:var(--bg-1);padding:26px 28px;display:grid;
  grid-template-columns:132px 1fr auto;gap:26px;align-items:start;
  transition:background .22s;
}
a.newsitem:hover{background:var(--bg-2)}
.newsitem__d{font:600 .78rem/1.5 var(--mono);letter-spacing:.06em;color:var(--brand-3);padding-top:3px}
.newsitem__k{font:600 9.5px/1 var(--mono);letter-spacing:.13em;text-transform:uppercase;color:var(--ink-4);margin-bottom:9px}
.newsitem__t{font-size:1.06rem;font-weight:620;letter-spacing:-.014em;line-height:1.32}
.newsitem__b{font-size:.92rem;color:var(--ink-2);margin-top:8px;line-height:1.55;max-width:70ch}
.newsitem__go{color:var(--brand-3);font-size:1.1rem;padding-top:2px;transition:transform .3s var(--ease)}
a.newsitem:hover .newsitem__go{transform:translateX(4px)}
@media (max-width:720px){
  .newsitem{grid-template-columns:1fr;gap:10px}
  .newsitem__go{display:none}
}


/* ---------- client trust strip ----------
   Only ever used on a light surface: several supplied marks carry a baked-in
   white background that would show as a box on dark. */
.logos{
  display:grid;grid-template-columns:repeat(5,1fr);
  gap:34px 30px;align-items:center;justify-items:center;
}
.logo{display:flex;align-items:center;justify-content:center;height:52px;width:100%}
.logo img{
  max-height:44px;width:auto;max-width:100%;object-fit:contain;
  filter:saturate(.88);opacity:.9;
  transition:filter .3s var(--ease),opacity .3s var(--ease),transform .4s var(--ease);
}
.logo:hover img{filter:none;opacity:1;transform:scale(1.05)}
@media (max-width:900px){ .logos{grid-template-columns:repeat(3,1fr);gap:28px 22px} }
@media (max-width:560px){ .logos{grid-template-columns:repeat(2,1fr)} .logo img{max-height:36px} }

/* ---------- news posts (picture-led archive) ---------- */
.postgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.post{
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;display:flex;flex-direction:column;
  transition:border-color .3s,transform .4s var(--ease);
}
.post:hover{border-color:var(--line-2);transform:translateY(-3px)}
.post__fig{background:var(--bg-2);overflow:hidden}
.post__fig img{width:100%;height:200px;object-fit:cover;display:block;
  transition:transform .8s var(--ease-out)}
.post:hover .post__fig img{transform:scale(1.04)}
.post__b{padding:24px 26px 26px;display:flex;flex-direction:column;flex:1}
.post__meta{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.post__kind{
  font:640 9.5px/1 var(--mono);letter-spacing:.13em;text-transform:uppercase;
  color:var(--brand-3);border:1px solid rgba(25,200,232,.3);
  background:rgba(25,200,232,.08);padding:5px 9px;border-radius:999px;
}
.post__date{font:500 .78rem/1 var(--mono);color:var(--ink-4)}
.post__t{font-size:1.08rem;font-weight:640;letter-spacing:-.016em;line-height:1.3;color:var(--ink)}
.post--slim{justify-content:flex-start}
.post--slim .post__b{padding:22px 24px}
.post--slim .post__t{font-size:1rem}
.post__ex{margin-top:11px;font-size:.9rem;line-height:1.6;color:var(--ink-2)}
.post__go{
  margin-top:16px;display:inline-flex;align-items:center;gap:7px;
  font:580 .85rem/1 var(--sans);color:var(--brand-3);
}
.post__go i{font-style:normal;transition:transform .3s var(--ease)}
.post:hover .post__go i{transform:translateX(4px)}
.post__src{
  margin-top:12px;align-self:flex-start;font:500 .8rem/1 var(--sans);
  color:var(--ink-3);border-bottom:1px solid var(--line-2);padding-bottom:2px;
  transition:color .2s,border-color .2s;
}
.post__src:hover{color:var(--brand-3);border-color:var(--brand-3)}
.chip.is-on{border-color:var(--brand);color:var(--brand-3);background:rgba(25,200,232,.08)}
button.chip{cursor:pointer}
@media (max-width:1000px){ .postgrid{grid-template-columns:repeat(2,minmax(0,1fr))} }
@media (max-width:660px){ .postgrid{grid-template-columns:minmax(0,1fr)} }

/* ---------- sticky pinned scroll ---------- */
.pin{position:relative}
.pin__stage{position:sticky;top:62px;height:calc(100svh - 62px);display:flex;align-items:center;overflow:hidden}
.pin__steps{position:relative;z-index:2}
.pin__step{min-height:88svh;display:flex;align-items:center;padding:20px 0}
.pin__step .card{background:rgba(10,14,21,.82);backdrop-filter:blur(16px);max-width:430px}

/* ---------- scroll reveal ---------- */
[data-rv]{opacity:0;transform:translateY(26px);transition:opacity .85s var(--ease-out),transform .85s var(--ease-out)}
[data-rv].in{opacity:1;transform:none}
[data-rv-d="1"]{transition-delay:.08s}
[data-rv-d="2"]{transition-delay:.16s}
[data-rv-d="3"]{transition-delay:.24s}
[data-rv-d="4"]{transition-delay:.32s}
[data-rv-d="5"]{transition-delay:.40s}
[data-rv-d="6"]{transition-delay:.48s}

/* ---------- simulator ---------- */
.sim{
  background:linear-gradient(168deg,var(--bg-1),var(--bg-2));
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
}
.sim__head{padding:24px 28px;border-bottom:1px solid var(--line);display:flex;flex-wrap:wrap;gap:14px;align-items:flex-start;justify-content:space-between}
.sim__head .h3{margin:0}
.sim__body{display:grid;grid-template-columns:300px 1fr;gap:0}
.sim__controls{padding:26px 28px;border-right:1px solid var(--line);display:grid;gap:22px;align-content:start}
.sim__view{padding:26px 28px;min-width:0}

.ctl{display:grid;gap:9px}
.ctl__top{display:flex;justify-content:space-between;align-items:baseline;gap:10px}
.ctl__lab{font-size:.85rem;font-weight:560;color:var(--ink-2)}
.ctl__val{font:600 .92rem/1 var(--mono);color:var(--brand-3);font-variant-numeric:tabular-nums}
.ctl__hint{font-size:.74rem;color:var(--ink-4);line-height:1.45}

input[type=range]{
  -webkit-appearance:none;appearance:none;width:100%;height:22px;background:transparent;cursor:pointer;
}
input[type=range]::-webkit-slider-runnable-track{height:4px;border-radius:99px;background:var(--bg-3);border:1px solid var(--line)}
input[type=range]::-moz-range-track{height:4px;border-radius:99px;background:var(--bg-3);border:1px solid var(--line)}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:17px;height:17px;border-radius:50%;margin-top:-7.5px;
  background:var(--brand);border:2px solid var(--bg-1);
  box-shadow:0 0 0 1px var(--brand),0 3px 10px rgba(0,0,0,.5);
  transition:transform .18s var(--ease);
}
input[type=range]::-moz-range-thumb{
  width:15px;height:15px;border-radius:50%;background:var(--brand);border:2px solid var(--bg-1);
  box-shadow:0 0 0 1px var(--brand);
}
input[type=range]:hover::-webkit-slider-thumb{transform:scale(1.18)}
input[type=range]:active::-webkit-slider-thumb{transform:scale(1.05)}

/* toggle list */
.tog{display:flex;align-items:flex-start;gap:12px;padding:11px 13px;border-radius:12px;border:1px solid var(--line);background:var(--bg-2);cursor:pointer;transition:border-color .2s,background .2s;text-align:left;width:100%}
.tog:hover{border-color:var(--line-2)}
.tog.on{border-color:rgba(25,200,232,.42);background:rgba(25,200,232,.07)}
.tog__box{
  flex:none;width:19px;height:19px;border-radius:6px;border:1.5px solid var(--line-2);
  display:grid;place-items:center;margin-top:1px;transition:background .2s,border-color .2s;
}
.tog.on .tog__box{background:var(--brand);border-color:var(--brand)}
.tog__box svg{width:11px;height:11px;opacity:0;transform:scale(.6);transition:opacity .2s,transform .2s var(--ease);color:#03151b}
.tog.on .tog__box svg{opacity:1;transform:none}
.tog__t{font-size:.87rem;font-weight:550;line-height:1.35;color:var(--ink)}
.tog__s{font:500 .74rem/1.4 var(--mono);color:var(--ink-3);margin-top:3px;display:block}

/* readouts */
.reads{display:grid;grid-template-columns:repeat(auto-fit,minmax(128px,1fr));gap:2px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;margin-bottom:22px}
.read{background:var(--bg-2);padding:16px 17px}
.read__l{font:600 9.5px/1 var(--mono);letter-spacing:.13em;text-transform:uppercase;color:var(--ink-4);margin-bottom:9px}
.read__v{font:700 clamp(1.28rem,2.5vw,1.75rem)/1 var(--sans);letter-spacing:-.028em;font-variant-numeric:tabular-nums;transition:color .3s}
.read__v .u{font-size:.52em;font-weight:600;color:var(--ink-3);margin-left:4px;letter-spacing:0}
.read__s{font-size:.75rem;color:var(--ink-3);margin-top:6px;line-height:1.4}
.read--brand .read__v{color:var(--brand-3)}
.read--ok .read__v{color:var(--ok)}
.read--warn .read__v{color:var(--warn)}
.read--bad .read__v{color:var(--bad)}

.verdict{
  display:flex;align-items:center;gap:11px;padding:13px 17px;border-radius:12px;
  border:1px solid var(--line);background:var(--bg-2);font-size:.88rem;line-height:1.45;margin-top:20px;
}
.verdict b{font-weight:640}
.verdict.ok{border-color:rgba(45,212,167,.35);background:rgba(45,212,167,.08)}
.verdict.bad{border-color:rgba(255,107,91,.35);background:rgba(255,107,91,.08)}
.verdict.warn{border-color:rgba(255,194,71,.35);background:rgba(255,194,71,.08)}
.verdict__dot{width:8px;height:8px;border-radius:50%;background:currentColor;flex:none}

.formula{
  font-family:var(--mono);font-size:.85rem;line-height:1.85;color:var(--ink-2);
  padding:15px 18px;border-radius:12px;background:var(--bg-2);border:1px solid var(--line);
  overflow-x:auto;white-space:nowrap;
}
.formula b{color:var(--brand-3);font-weight:600}
.formula em{color:var(--warm);font-style:normal}

/* ---------- charts ---------- */
.chart{width:100%;overflow:visible}
.chart text{font-family:var(--mono);font-size:9.5px;fill:var(--ink-4)}
.chart .ax{stroke:var(--line);stroke-width:1}
.chart .gl{stroke:var(--line);stroke-width:1;stroke-dasharray:2 4}
.chart .lbl{fill:var(--ink-3);font-size:10px}
.chart__legend{display:flex;flex-wrap:wrap;gap:16px;margin-top:14px}
.chart__legend span{display:flex;align-items:center;gap:7px;font-size:.79rem;color:var(--ink-3)}
.chart__legend i{width:11px;height:11px;border-radius:3px;flex:none}
.chart-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}

/* ---------- tables ---------- */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r)}
.tbl{min-width:560px;font-size:.9rem}
.tbl th,.tbl td{padding:13px 17px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.tbl thead th{
  font:640 10px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-4);
  background:var(--bg-2);white-space:nowrap;
}
.tbl tbody tr:last-child td{border-bottom:0}
.tbl tbody tr{transition:background .18s}
.tbl tbody tr:hover{background:rgba(255,255,255,.03)}
.inverse .tbl tbody tr:hover{background:rgba(6,12,20,.03)}
.tbl .num{font-family:var(--mono);font-variant-numeric:tabular-nums;white-space:nowrap}
.tbl tr.is-off td{color:var(--ink-4)}

/* ---------- prose (insights) ---------- */
.prose{font-size:1.08rem;line-height:1.72;color:var(--ink-2)}
.prose>*+*{margin-top:1.25em}
.prose h2{font-size:clamp(1.42rem,2.5vw,1.95rem);line-height:1.18;letter-spacing:-.022em;font-weight:660;color:var(--ink);margin-top:2.1em}
.prose h3{font-size:1.16rem;line-height:1.32;font-weight:640;color:var(--ink);margin-top:1.7em}
.prose strong{color:var(--ink);font-weight:620}
.prose a{color:var(--brand-3);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;text-decoration-color:rgba(103,232,249,.4)}
.prose a:hover{text-decoration-color:currentColor}
.prose ul{display:grid;gap:.6em;padding-left:0}
.prose ul li{position:relative;padding-left:24px}
.prose ul li::before{content:"";position:absolute;left:5px;top:.72em;width:5px;height:5px;border-radius:50%;background:var(--brand);opacity:.75}
.prose ol{counter-reset:n;display:grid;gap:.6em}
.prose ol li{position:relative;padding-left:32px;counter-increment:n}
.prose ol li::before{content:counter(n);position:absolute;left:0;top:.1em;font:640 .78rem/1.6 var(--mono);color:var(--brand-3)}
.prose blockquote{
  border-left:2px solid var(--brand);padding:4px 0 4px 24px;margin-left:0;
  font-size:1.14rem;line-height:1.55;color:var(--ink);letter-spacing:-.012em;
}
.prose figure{margin:2.2em 0}
.prose .pull{
  font-size:clamp(1.2rem,2.2vw,1.55rem);line-height:1.36;letter-spacing:-.02em;color:var(--ink);
  font-weight:600;padding:26px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:2em 0;
}
.prose code{font-family:var(--mono);font-size:.88em;background:var(--bg-2);padding:2px 6px;border-radius:5px;border:1px solid var(--line);color:var(--brand-3)}

.postmeta{display:flex;flex-wrap:wrap;gap:9px 18px;align-items:center;font-size:.83rem;color:var(--ink-3)}
.postmeta .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-4)}

.callout{
  border:1px solid var(--line);border-radius:var(--r);padding:22px 24px;background:var(--bg-1);
  display:grid;gap:9px;
}
.callout--brand{border-color:rgba(25,200,232,.3);background:rgba(25,200,232,.06)}
.callout__t{font:640 10px/1 var(--mono);letter-spacing:.13em;text-transform:uppercase;color:var(--brand-3)}

/* ---------- timeline ---------- */
.tl{display:grid;gap:0;position:relative;padding-left:26px}
.tl::before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;background:var(--line)}
.tl__i{position:relative;padding:16px 0}
.tl__i::before{content:"";position:absolute;left:-24px;top:23px;width:11px;height:11px;border-radius:50%;background:var(--bg);border:2px solid var(--brand)}
.tl__d{font:640 .78rem/1 var(--mono);color:var(--brand-3);letter-spacing:.04em}
.tl__l{margin-top:6px;font-size:.95rem;color:var(--ink)}

/* ---------- footer ---------- */
.foot{background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 34px}
.foot__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:38px}
.foot__t{font:640 10px/1 var(--mono);letter-spacing:.13em;text-transform:uppercase;color:var(--ink-4);margin-bottom:17px}
.foot__l{display:grid;gap:11px}
.foot__l a{font-size:.9rem;color:var(--ink-2);transition:color .2s}
.foot__l a:hover{color:var(--brand-3)}
.foot__bot{margin-top:48px;padding-top:24px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;font-size:.81rem;color:var(--ink-4)}

/* ---------- q-peak cross-link band ---------- */
.qpeak{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid rgba(45,212,167,.26);
  background:linear-gradient(126deg,rgba(45,212,167,.11),rgba(25,200,232,.07) 48%,transparent 78%),var(--bg-1);
  padding:clamp(30px,4.4vw,54px);
}
.qpeak::before{
  content:"";position:absolute;right:-90px;top:-90px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(45,212,167,.20),transparent 68%);pointer-events:none;
}
.qpeak__mark{width:44px;height:44px;margin-bottom:22px}

/* ---------- misc ---------- */
.note{font-size:.79rem;color:var(--ink-4);line-height:1.55;margin-top:14px;padding-left:15px;border-left:1px solid var(--line)}
.kv{display:grid;grid-template-columns:auto 1fr;gap:9px 20px;font-size:.9rem}
.kv dt{color:var(--ink-3)}
.kv dd{margin:0;color:var(--ink);font-family:var(--mono);font-variant-numeric:tabular-nums}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{padding:5px 12px;border-radius:999px;border:1px solid var(--line);font-size:.78rem;color:var(--ink-2);background:var(--bg-2)}
.skip{position:absolute;left:-9999px;top:0;padding:11px 18px;background:var(--brand);color:#03151b;z-index:200;border-radius:0 0 10px 0}
.skip:focus{left:0}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .sim__body{grid-template-columns:1fr}
  .sim__controls{border-right:0;border-bottom:1px solid var(--line)}
  .foot__grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:860px){
  body{font-size:16px}
  .nav__links{
    position:fixed;inset:62px 0 auto;flex-direction:column;align-items:stretch;gap:2px;
    background:rgba(8,11,17,.97);backdrop-filter:blur(24px);
    padding:16px 22px 26px;border-bottom:1px solid var(--line);
    transform:translateY(-12px);opacity:0;visibility:hidden;transition:.28s var(--ease);
    max-height:calc(100svh - 62px);overflow-y:auto;
  }
  .nav__links.open{transform:none;opacity:1;visibility:visible}
  .nav__link{padding:13px 14px;border-radius:11px;font-size:1rem}
  .nav__toggle{display:grid;place-items:center}
  .nav__cta{margin:10px 0 0}
  .navdrop__panel{
    position:static;transform:none;width:auto;opacity:1;visibility:visible;pointer-events:auto;
    background:transparent;border:0;box-shadow:none;padding:2px 0 2px 12px;
    grid-template-columns:1fr;display:none;
  }
  .navdrop.open .navdrop__panel{display:grid}
  .split,.split--wide{grid-template-columns:1fr}
  .split--rev>*:first-child{order:0}
  .pin__stage{position:relative;top:0;height:auto;margin-bottom:24px}
  .pin__step{min-height:auto;padding:14px 0}
  .pin__step .card{max-width:none}
  .foot__grid{grid-template-columns:1fr}
  .section{padding:64px 0}
}
@media (max-width:520px){
  .wrap,.wrap-narrow{width:min(100% - 32px,var(--wrap))}
  .card{padding:22px}
  .sim__controls,.sim__view,.sim__head{padding:20px}
}

/* ---------- motion / print ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  [data-rv]{opacity:1;transform:none}
  .hero__canvas{display:none}
}
@media print{
  .nav,.foot,.scrollcue,.hero__canvas,.sim__controls{display:none}
  body{background:#fff;color:#000}
}