/* VyavastAI — vyavastai.com
   Palette B (navy #163E64 + azure #2E7DD6). Green/red are RESERVED for pass/fail data only.
   Hand-written, no build step. Edit this file directly. */

:root{
  --navy:#163E64; --navy2:#1E4E7A; --azure:#2E7DD6; --azink:#1C60C0;
  --green:#2E9E66; --greenink:#237A4E; --gap:#D64B4B; --gapink:#B23A3A;
  --ink:#132A40; --ink2:#33475C; --muted:#5D7183; --na:#8593A5;
  --bg:#FFFFFF; --tint:#F1F5FA; --border:#D6DFEA; --ice:#CFE1FF;
  --card:#FFFFFF; --darkbg:#163E64; --dark-accent:#7FB0FF; --chip:#E9F1FC;
  --shadow:0 1px 2px rgba(22,62,100,.05),0 6px 20px -8px rgba(22,62,100,.14);
  --f-sans:"Source Sans 3",-apple-system,BlinkMacSystemFont,"Segoe UI",Calibri,Arial,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,"Courier New",monospace;
  --wrap:1140px;
  --d-bx1-f:#F1F4F8; --d-bx1-s:#8593A5; --d-bx2-f:#EAF0F8; --d-bx2-s:#163E64;
  --d-bx3-f:#E7EFFA; --d-bx3-s:#2E7DD6; --d-bx4-f:#FBE8E8; --d-bx4-s:#D64B4B;
  --d-bx5-f:#E4F1E9; --d-bx5-s:#2E9E66; --d-line:#163E64; --d-title:#163E64;
  --d-glow:rgba(22,62,100,.22);
}
@media (prefers-color-scheme:dark){
  :root{
    --ink:#E4ECF5; --ink2:#B6C6D8; --muted:#8AA0B6; --na:#7A8B9E;
    --bg:#0C1E30; --tint:#122840; --border:#22405E; --card:#122840;
    --darkbg:#091827; --azink:#7FB0FF; --azure:#3D8FE4;
    --greenink:#5CC48D; --gapink:#EA8A8A; --chip:#152F4A;
    --shadow:0 1px 2px rgba(0,0,0,.3),0 6px 20px -8px rgba(0,0,0,.5);
    --d-bx1-f:#16293D; --d-bx1-s:#6C8098; --d-bx2-f:#14304D; --d-bx2-s:#5488BF;
    --d-bx3-f:#14304D; --d-bx3-s:#3D8FE4; --d-bx4-f:#37222A; --d-bx4-s:#C96B6B;
    --d-bx5-f:#123329; --d-bx5-s:#3E9A72; --d-line:#9FB4C9; --d-title:#E4ECF5;
    --d-glow:rgba(0,0,0,.55);
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-sans);
  font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;
  min-height:100vh;display:flex;flex-direction:column}
h1,h2,h3,h4{margin:0;line-height:1.15;font-weight:700;color:var(--navy);text-wrap:balance}
@media (prefers-color-scheme:dark){h1,h2,h3,h4{color:var(--ink)}}
p{margin:0}
img{max-width:100%;height:auto}
a{color:var(--azink)}
:focus-visible{outline:2px solid var(--azure);outline-offset:3px;border-radius:3px}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto}}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 26px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:16px;top:16px;z-index:99;background:#fff;color:var(--navy);padding:10px 16px;border-radius:6px}

/* ---------- header ---------- */
header.site{background:var(--darkbg);position:sticky;top:0;z-index:60;
  box-shadow:0 1px 0 rgba(255,255,255,.08),0 6px 18px -10px rgba(0,0,0,.55)}
section[id],a[id],main [id]{scroll-margin-top:84px}
@media(max-width:780px){section[id],a[id],main [id]{scroll-margin-top:140px}}
header.site .in{max-width:var(--wrap);margin:0 auto;padding:14px 26px;
  display:flex;align-items:center;gap:14px}
header.site .brand{display:flex;align-items:center;gap:12px;text-decoration:none;margin-right:auto}
header.site .chip{background:#fff;border-radius:7px;padding:5px;display:flex}
header.site .chip img{display:block;width:30px;height:30px}
header.site .wm{font-size:21px;font-weight:700;color:#fff;letter-spacing:-.01em}
header.site nav{display:flex;flex-wrap:wrap;gap:3px}
header.site nav a{color:#CFE1FF;text-decoration:none;font-size:15px;font-weight:600;
  padding:7px 12px;border-radius:6px}
header.site nav a:hover{background:rgba(255,255,255,.12)}
header.site nav a[aria-current="page"]{background:var(--azure);color:#fff}
@media(max-width:780px){
  header.site .in{flex-wrap:wrap;padding:9px 18px;gap:8px}
  header.site .brand{margin-right:0;width:100%;gap:9px}
  header.site .chip{padding:4px}
  header.site .chip img{width:24px;height:24px}
  header.site .wm{font-size:18px}
  header.site nav{gap:2px}
  header.site nav a{font-size:14px;padding:5px 9px}
}


/* ---------- sections ---------- */
main{display:block;flex:1 0 auto}
footer.site{flex-shrink:0}
section{padding:62px 0}
section.alt{background:var(--tint)}
section.hero{background:var(--darkbg);padding:76px 0}
section.hero.compact{padding:56px 0}
section.hero h1,section.hero h2{color:#fff}
.eyebrow{font-family:var(--f-mono);font-size:12px;letter-spacing:.17em;
  text-transform:uppercase;color:var(--azink);margin-bottom:14px}
section.hero .eyebrow{color:var(--dark-accent)}
section.hero h1{font-size:clamp(36px,5vw,58px);letter-spacing:-.025em}
section.hero.compact h1{font-size:clamp(30px,4.2vw,45px)}
section.hero h1 .alt{color:var(--dark-accent);display:block}
.lede{color:var(--ice);font-size:19px;max-width:62ch;margin-top:20px;font-weight:300;
  /* balance stops a short lead breaking with one orphaned word on line 2 */
  text-wrap:balance}
/* a single short sentence does not need the 62ch reading-measure cap.
   (:only-of-type does not work here — the .eyebrow <p> is a sibling) */
.lede.short{max-width:none}
.btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.btn{display:inline-block;font-weight:600;font-size:16px;text-decoration:none;
  padding:12px 24px;border-radius:6px;background:var(--azure);color:#fff;border:1px solid var(--azure)}
.btn:hover{background:var(--azink);border-color:var(--azink)}
.btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
.btn.ghost:hover{background:rgba(255,255,255,.12)}
.cred{margin-top:26px;padding-top:20px;border-top:1px solid rgba(255,255,255,.16);
  font-size:15px;color:var(--ice);max-width:64ch}
.cred b{color:var(--dark-accent);font-weight:600}

h2.sec{font-size:clamp(26px,3.3vw,36px);letter-spacing:-.02em}
h2.sec .alt{color:var(--azink)}
.subtag{margin-top:10px;font-family:var(--f-mono);font-size:13px;color:var(--azink)}
.lede2{color:var(--muted);font-size:18px;max-width:68ch;margin-top:13px;font-weight:300}
.body{margin-top:20px}
.body p{color:var(--ink2);max-width:66ch;margin-top:15px}

/* ---------- grids / cards ---------- */
.grid{display:grid;gap:18px;margin-top:28px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g5{grid-template-columns:repeat(5,1fr)}
@media(max-width:1000px){.g5,.g4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){.g2,.g3,.g4,.g5{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--border);border-radius:9px;
  padding:24px;box-shadow:var(--shadow)}
.card h3{font-size:19px;margin-bottom:8px}
.card p{color:var(--ink2);font-size:15.5px}
.card .step{font-family:var(--f-mono);font-size:11.5px;letter-spacing:.11em;
  color:var(--azink);margin-bottom:9px}
.card.hot{border:1.5px solid var(--azure);background:var(--chip)}
.expand{margin-top:9px;font-family:var(--f-mono);font-size:13.5px;color:var(--muted)}
.expand b{color:var(--azink);font-weight:500}

.strip{display:grid;grid-template-columns:repeat(4,1fr);margin-top:0;
  border:1px solid var(--border);border-radius:9px;overflow:hidden;background:var(--card)}
@media(max-width:820px){.strip{grid-template-columns:1fr}}
.strip>*{padding:20px 22px;border-right:1px solid var(--border);display:block}
.strip>*:last-child{border-right:0}
@media(max-width:820px){.strip>*{border-right:0;border-bottom:1px solid var(--border)}
  .strip>*:last-child{border-bottom:0}}
.strip .k{font-family:var(--f-mono);font-size:11.5px;letter-spacing:.13em;color:var(--azink)}
.strip .v{font-size:19px;font-weight:700;color:var(--ink);margin-top:5px}

.strip>a{text-decoration:none;color:inherit;transition:background .15s}
.strip>a:hover{background:var(--chip)}
.strip>a:hover .v{color:var(--azink)}
.strip>a .v::after{content:" \2192";color:var(--azink);opacity:0;transition:opacity .15s}
.strip>a:hover .v::after{opacity:1}

ul.pts{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:14px;max-width:80ch}
ul.pts li{padding-left:20px;position:relative;color:var(--ink2);font-size:16.5px}
ul.pts li::before{content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;
  border-radius:50%;background:var(--azure)}
ul.pts li b{color:var(--ink);font-weight:600}

.drop{font-size:clamp(21px,2.4vw,27px);font-weight:700;color:var(--navy);
  line-height:1.25;letter-spacing:-.015em;margin-bottom:22px;text-wrap:balance}
.drop .alt{color:var(--azink)}
@media (prefers-color-scheme:dark){.drop{color:var(--ink)}}
.callout{margin-top:28px;background:var(--chip);border:1px solid var(--azure);
  border-radius:8px;padding:22px 28px;color:var(--ink2);font-size:16.5px;text-align:center}
.callout b{color:var(--azink)}
.pills{display:flex;flex-wrap:wrap;gap:9px;margin-top:14px}
.pill{font-size:15px;font-weight:600;color:var(--ink);background:var(--chip);
  border:1px solid var(--azure);border-radius:20px;padding:6px 15px;
  display:inline-flex;align-items:center;gap:8px}
.pill.soft{background:var(--tint);border-color:var(--border)}
.pill i{width:8px;height:8px;border-radius:50%;background:var(--green);display:block}
.pill.soft i{background:var(--na)}
.ask{margin-top:18px;display:grid;gap:9px;max-width:64ch}
.ask div{font-family:var(--f-mono);font-size:14px;color:var(--ink2);
  background:var(--tint);border:1px solid var(--border);border-radius:6px;padding:11px 15px}
.ask div::before{content:"› ";color:var(--azink)}
.figure{margin-top:28px;background:var(--card);border:1px solid var(--border);
  border-radius:9px;padding:22px;overflow-x:auto;box-shadow:var(--shadow)}
.figure img{display:block;min-width:680px;width:100%;height:auto;
  border:1px solid var(--border);border-radius:6px}
.note{margin-top:24px;border-left:3px solid var(--azure);background:var(--tint);
  padding:15px 20px;border-radius:0 7px 7px 0;font-size:15px;color:var(--ink2);max-width:78ch}

/* ---------- team ---------- */
.team{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px}
@media(max-width:900px){.team{grid-template-columns:1fr}}
.person{background:var(--card);border:1px solid var(--border);border-radius:9px;
  padding:24px;box-shadow:var(--shadow)}
.person h3{font-size:20px}
.person .role{font-family:var(--f-mono);font-size:12px;letter-spacing:.09em;
  text-transform:uppercase;color:var(--azink);margin:6px 0 12px}
.person p{color:var(--ink2);font-size:15.5px}
.person a.li{display:inline-flex;align-items:center;gap:7px;margin-top:16px;
  font-size:14.5px;font-weight:600;color:var(--azink);text-decoration:none}
.person a.li:hover{text-decoration:underline}
.person a.li svg{width:16px;height:16px;fill:currentColor;flex:0 0 auto}

/* ---------- form ---------- */
.form{margin-top:24px;max-width:540px;display:grid;gap:13px}
.form label{font-size:14px;font-weight:600;color:var(--ink);display:grid;gap:6px}
.form input,.form textarea,.form select{font-family:var(--f-sans);font-size:16px;
  padding:10px 13px;border:1px solid var(--border);border-radius:6px;
  background:var(--bg);color:var(--ink);width:100%}
.form button{justify-self:start;font-family:var(--f-sans);font-weight:600;font-size:16px;
  padding:12px 26px;border-radius:6px;background:var(--azure);color:#fff;
  border:1px solid var(--azure);cursor:pointer}
.form button:hover{background:var(--azink);border-color:var(--azink)}

/* ---------- footer ---------- */
footer.site{background:var(--darkbg);color:#9FB6CE;padding:34px 0;font-size:14.5px}
footer.site .in{max-width:var(--wrap);margin:0 auto;padding:0 26px;
  display:flex;flex-wrap:wrap;gap:14px;align-items:center}
footer.site a{color:#CFE1FF;text-decoration:none;margin-right:16px}
footer.site a:hover{text-decoration:underline}
footer.site .sp{margin-left:auto}

/* ---- prose sections: heading left, text right, so the page is not half empty ---- */
@media (min-width:900px){
  section > .wrap.prose{
    display:grid;
    grid-template-columns:minmax(220px,0.85fr) minmax(0,1.75fr);
    gap:18px 56px;
    align-items:start;
  }
  .wrap.prose > h2.sec{grid-column:1;grid-row:1}
  .wrap.prose > *:not(h2.sec):not(.callout):not(.subtag){grid-column:2}
  /* a short line under the heading, in the LEFT column. The rule below sends
     everything that is not the h2 to column 2, so this needs placing explicitly. */
  .wrap.prose > .subtag{grid-column:1;max-width:26ch;margin-top:14px;
    font-family:var(--f-mono);font-size:13px;line-height:1.55;color:var(--azink)}
  .wrap.prose > .body{margin-top:0}
  .wrap.prose > .body > p:first-child{margin-top:0}
  .wrap.prose > .lede2{margin-top:0}
  .wrap.prose > ul.pts{margin-top:0}
  /* closing callouts read as a full-width banner, not a right-column aside */
  .wrap.prose > .callout{grid-column:1 / -1;max-width:none;margin-top:38px}
}

/* ---------- animated loop figure ---------- */
.loopfig{margin:28px 0 0;background:var(--card);border:1px solid var(--border);
  border-radius:9px;padding:16px 20px 18px;box-shadow:var(--shadow)}
.loopbar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:12px}
.loopplay{font:inherit;font-size:12.5px;font-weight:700;color:var(--azink);background:var(--tint);
  border:1px solid var(--border);border-radius:999px;padding:5px 14px;cursor:pointer;min-width:66px}
.loopplay:hover{background:var(--card);border-color:var(--azure);color:var(--azure)}
.loopsteps{display:flex;gap:4px;list-style:none;margin:0;padding:0;flex-wrap:wrap}
.loopsteps button{font:inherit;font-size:11.5px;font-weight:700;letter-spacing:.01em;color:var(--ink2);
  background:transparent;border:1px solid transparent;border-radius:999px;padding:5px 10px;cursor:pointer}
.loopsteps button:hover{background:var(--tint);color:var(--navy)}
.loopsteps button[aria-current="true"]{background:var(--azink);color:var(--bg)}
.loopcanvas{overflow:auto;-webkit-overflow-scrolling:touch}
.loopfig svg{display:block;width:100%;max-width:100%;height:auto}
.loopfig.zoom .loopcanvas{max-height:72vh;cursor:grab;
  background:linear-gradient(90deg,var(--tint),transparent 22px,transparent calc(100% - 22px),var(--tint))}
.loopfig.zoom svg{width:1240px;max-width:none}
.loopzoom{font:inherit;font-size:12.5px;font-weight:700;color:var(--azink);background:var(--tint);
  border:1px solid var(--border);border-radius:999px;padding:5px 14px;cursor:pointer;min-width:62px}
.loopzoom:hover{background:var(--card);border-color:var(--azure);color:var(--azure)}
.loopzoom[aria-pressed="true"]{background:var(--azink);color:var(--bg);border-color:var(--azink)}
.zoomhint{display:none;font-size:12.5px;color:var(--muted);width:100%;margin-top:2px}
.loopcap{margin:14px 0 0;font-size:14.5px;line-height:1.55;color:var(--ink2);max-width:80ch;min-height:3.1em}
.loopcap b{color:var(--navy)}

.stg{transition:opacity .4s ease}
.stg[data-step]{cursor:pointer}
.stg[data-step]:focus-visible{outline:2px solid var(--azure);outline-offset:3px}
.stg > rect{transition:stroke-width .4s ease,filter .4s ease}
.loopfig.run .stg{opacity:.42}
.loopfig.run .stg.on{opacity:1}
.stg.on > rect{stroke-width:3;filter:drop-shadow(0 3px 10px var(--d-glow))}
.elab{transition:opacity .4s ease}
.loopfig.run .elab{opacity:.42}

.flow{opacity:0;stroke-dasharray:14 260;stroke-dashoffset:14}
.flow.on{opacity:.95;animation:loopflow 1.5s cubic-bezier(.4,0,.5,1) forwards}
@keyframes loopflow{from{stroke-dashoffset:14}to{stroke-dashoffset:-100}}

@media (prefers-reduced-motion: reduce){
  .flow{display:none}
  .loopfig.run .stg,.loopfig.run .elab{opacity:1}
  .stg,.stg > rect{transition:none}
}

/* diagram paint — every colour is a token so the figure follows the theme */
.dg{font-family:var(--f-sans)}
.dg rect{stroke-width:1.6}
.bx1{fill:var(--d-bx1-f);stroke:var(--d-bx1-s)}
.bx2{fill:var(--d-bx2-f);stroke:var(--d-bx2-s)}
.bx3{fill:var(--d-bx3-f);stroke:var(--d-bx3-s)}
.bx4{fill:var(--d-bx4-f);stroke:var(--d-bx4-s)}
.bx5{fill:var(--d-bx5-f);stroke:var(--d-bx5-s)}
.bx3.hi{stroke-width:2.2}
.d-group{fill:none;stroke:var(--border);stroke-width:1.6;stroke-dasharray:7 5}
.d-group.acc{stroke:var(--d-bx3-s);opacity:.55}
.d-h{font-size:22px;font-weight:700;fill:var(--d-title)}
.d-p{font-size:27px;font-weight:700;fill:var(--d-title);letter-spacing:-.005em}
.d-h.red{fill:var(--gapink)}
.d-h.grn{fill:var(--greenink)}
.d-b{font-size:17px;fill:var(--ink2)}
.d-b.sm{font-size:16px}
.d-a{font-size:16.5px;font-weight:700;fill:var(--azink)}
.d-i{font-size:15px;font-style:italic;fill:var(--muted)}
.d-band{font-size:14px;font-weight:700;fill:var(--muted);letter-spacing:1.7px}
.d-band.acc{fill:var(--azink)}
.elab{font-size:14px;font-weight:700;fill:var(--azink)}
.dotg{fill:var(--d-bx5-s)}
.jn{fill:var(--azure)}
.edges path{stroke-width:2.4}
.e-n{stroke:var(--d-line)} .hN{fill:var(--d-line)}
.e-a{stroke:var(--azure)}  .hA{fill:var(--azure)}
.e-r{stroke:var(--gapink)} .hR{fill:var(--gapink)}
.e-g{stroke:var(--greenink)} .hG{fill:var(--greenink)}
.e-m{stroke:var(--na)}     .hM{fill:var(--na)}
.e-t{stroke:var(--azure);stroke-width:1.8}
.edges .e-t{stroke-width:1.8}
.flows path{stroke-width:5}
.flows .e-t{stroke-width:3.6}

/* navy-on-light text that must lighten in dark */
@media (prefers-color-scheme:dark){
  .drop{color:var(--ink)}
  .loopsteps button:hover{color:var(--ink)}
  .loopcap b{color:var(--ink)}
}
.e-n2{stroke:var(--d-line);stroke-width:1.8;opacity:.72} .flows .e-n2{stroke-width:3.4}
.elab.dim{fill:var(--muted);font-size:12.5px;font-weight:600;letter-spacing:.03em}



@media(max-width:780px){
  .loopfig{padding:14px 14px 16px}
  .zoomhint{display:block}
  .loopcap{font-size:15px;min-height:0;margin-top:14px}
  .loopsteps button{font-size:12.5px;padding:6px 10px}
  .loopfig.zoom .loopcanvas{max-height:64vh}
}