/* ==========================================================================
   NORDAN — nordantoken.top
   Visual language: infrastructure console.
   Graphite ground, mint signal colour, amber for caution, mono labels.
   ========================================================================== */

/* ---- reset ------------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}

/* ---- tokens ------------------------------------------------------------ */
:root{
  --bg:#090c11;
  --bg-2:#0d1218;
  --panel:#111a24;
  --panel-2:#16212e;
  --line:#1d2b3a;
  --line-2:#2a3d51;
  --ink:#e9f0f7;
  --ink-dim:#bccada;
  --muted:#8398ac;
  --mint:#38e5ba;
  --mint-deep:#0f9c7e;
  --amber:#ffb457;
  --amber-dim:#8a6027;

  --f-display:'Space Grotesk',system-ui,-apple-system,sans-serif;
  --f-body:'Inter',system-ui,-apple-system,sans-serif;
  --f-mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,monospace;

  --maxw:1200px;
  --gutter:clamp(20px,5vw,40px);
  --r:3px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);
  --shadow:0 1px 0 rgba(255,255,255,.03) inset,0 24px 60px -30px rgba(0,0,0,.9);
}

/* ---- ground ------------------------------------------------------------ */
html{background:var(--bg)}
body{
  font-family:var(--f-body);
  font-size:clamp(16px,1.02vw,17.5px);
  line-height:1.72;
  color:var(--ink-dim);
  background:
    radial-gradient(1100px 620px at 82% -8%,rgba(56,229,186,.10),transparent 60%),
    radial-gradient(900px 520px at 6% 4%,rgba(255,180,87,.055),transparent 62%),
    linear-gradient(180deg,#090c11 0%,#0b1016 42%,#090c11 100%);
  background-attachment:fixed;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
/* fine engineering grid + vignette, painted above the gradient */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:
    linear-gradient(rgba(120,160,200,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,160,200,.045) 1px,transparent 1px);
  background-size:64px 64px,64px 64px;
  mask-image:radial-gradient(1200px 800px at 50% 0%,#000 30%,transparent 88%);
}
/* grain */
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:1;opacity:.4;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='140' height='140'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='140' height='140' filter='url(%23n)' opacity='.5'/></svg>");
  mix-blend-mode:overlay;
}
.wrap{position:relative;z-index:2}
.shell{width:min(100% - 2*var(--gutter),var(--maxw));margin-inline:auto}

/* ---- type -------------------------------------------------------------- */
h1,h2,h3,h4{font-family:var(--f-display);color:var(--ink);line-height:1.08;letter-spacing:-.02em;font-weight:600}
h1{font-size:clamp(2.35rem,6.2vw,4.5rem);letter-spacing:-.035em}
h2{font-size:clamp(1.65rem,3.5vw,2.6rem);letter-spacing:-.028em}
h3{font-size:clamp(1.12rem,1.7vw,1.34rem);letter-spacing:-.012em;line-height:1.25}
h4{font-size:1rem;letter-spacing:.01em}
p{margin-block:0 1.15em}
strong{color:var(--ink);font-weight:600}
a{color:var(--mint);text-decoration:none;text-underline-offset:3px}
a:hover{text-decoration:underline}
em{color:var(--ink)}

.eyebrow{
  font-family:var(--f-mono);font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--mint);display:flex;align-items:center;gap:.65em;font-weight:500;
}
.eyebrow::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--mint),transparent)}
.lede{font-size:clamp(1.08rem,1.5vw,1.28rem);line-height:1.6;color:var(--ink-dim)}

/* ---- skip link --------------------------------------------------------- */
.skip{position:absolute;left:12px;top:-64px;z-index:100;background:var(--mint);color:#04231b;
  padding:12px 18px;border-radius:var(--r);font-weight:600;transition:top .25s var(--ease)}
.skip:focus{top:12px}

/* ---- focus ------------------------------------------------------------- */
:focus-visible{outline:2px solid var(--mint);outline-offset:3px;border-radius:2px}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--mint);outline-offset:3px}

/* ---- header ------------------------------------------------------------ */
.hdr{position:sticky;top:0;z-index:40;backdrop-filter:blur(14px);
  background:linear-gradient(180deg,rgba(9,12,17,.92),rgba(9,12,17,.66));
  border-bottom:1px solid var(--line)}
.hdr__in{display:flex;align-items:center;gap:clamp(14px,3vw,34px);min-height:66px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--f-display);font-weight:700;
  font-size:1.06rem;letter-spacing:.06em;color:var(--ink)}
.brand svg{flex:0 0 auto}
.brand small{display:block;font-family:var(--f-mono);font-size:.6rem;letter-spacing:.2em;
  color:var(--muted);font-weight:400;text-transform:uppercase;margin-top:2px}
.nav{margin-left:auto;display:flex;gap:clamp(12px,2vw,26px);align-items:center}
.nav a{font-family:var(--f-mono);font-size:.76rem;letter-spacing:.08em;text-transform:uppercase;
  color:var(--muted);padding:6px 2px;position:relative}
.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:1px;background:var(--mint);
  transition:right .3s var(--ease)}
.nav a:hover{color:var(--ink);text-decoration:none}
.nav a:hover::after{right:0}
.tag-wp{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.1em;color:var(--amber);
  border:1px solid var(--amber-dim);padding:5px 10px;border-radius:100px;white-space:nowrap}

/* reading progress */
.progress{position:fixed;left:0;top:0;height:2px;width:100%;z-index:60;transform:scaleX(0);
  transform-origin:0 50%;background:linear-gradient(90deg,var(--mint),var(--amber));pointer-events:none}

/* ---- hero -------------------------------------------------------------- */
.hero{padding:clamp(46px,7vw,96px) 0 clamp(30px,4vw,52px);position:relative}
.hero__grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(300px,.85fr);
  gap:clamp(28px,4vw,58px);align-items:start}
.hero h1{margin:.5em 0 .55em;max-width:15ch}
.hero .lede{max-width:52ch}
.hero__note{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:26px;font-family:var(--f-mono);
  font-size:.74rem;letter-spacing:.08em;color:var(--muted);text-transform:uppercase}
.hero__note span{display:inline-flex;align-items:center;gap:8px}
.hero__note span::before{content:"";width:6px;height:6px;background:var(--mint);border-radius:50%;
  box-shadow:0 0 0 4px rgba(56,229,186,.14)}

/* spec panel (right of hero) */
.spec{background:linear-gradient(160deg,var(--panel),var(--bg-2));border:1px solid var(--line);
  border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden}
.spec__hd{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--line);
  background:rgba(255,255,255,.015)}
.spec__hd i{width:8px;height:8px;border-radius:50%;background:var(--line-2);display:block}
.spec__hd i:nth-child(1){background:var(--amber)}
.spec__hd i:nth-child(2){background:var(--mint)}
.spec__hd b{margin-left:6px;font-family:var(--f-mono);font-size:.68rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted);font-weight:500}
.spec dl{padding:6px 16px 14px}
.spec .row{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px dashed var(--line);
  font-family:var(--f-mono);font-size:.78rem}
.spec .row:last-child{border-bottom:0}
.spec dt{color:var(--muted);letter-spacing:.03em}
.spec dd{color:var(--ink);text-align:right;font-weight:500}
.spec dd.mint{color:var(--mint)}
.spec dd.amber{color:var(--amber)}

/* hero figure */
.hero__fig{margin-top:clamp(34px,5vw,58px);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;position:relative;background:var(--panel)}
.hero__fig img{width:100%;height:clamp(220px,38vw,420px);object-fit:cover;filter:saturate(.9) contrast(1.05)}
.hero__fig::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(9,12,17,.15),rgba(9,12,17,.72)),
             repeating-linear-gradient(0deg,rgba(56,229,186,.06) 0 1px,transparent 1px 3px)}
.hero__fig figcaption{position:absolute;left:0;bottom:0;z-index:2;padding:16px 18px;font-family:var(--f-mono);
  font-size:.72rem;letter-spacing:.06em;color:var(--ink-dim);background:linear-gradient(0deg,rgba(9,12,17,.86),transparent)}

/* ---- document layout (rail + article) ---------------------------------- */
.doc{display:grid;grid-template-columns:215px minmax(0,1fr);gap:clamp(28px,5vw,64px);
  padding:clamp(40px,6vw,84px) 0 clamp(60px,8vw,110px)}
.rail{position:sticky;top:96px;align-self:start;font-family:var(--f-mono);font-size:.76rem}
.rail h2{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--muted);margin-bottom:14px;font-weight:500}
.rail ol{counter-reset:r;display:flex;flex-direction:column;gap:2px}
.rail a{display:grid;grid-template-columns:22px 1fr;gap:8px;padding:7px 10px 7px 0;color:var(--muted);
  border-left:2px solid transparent;transition:color .25s var(--ease),border-color .25s var(--ease)}
.rail a::before{counter-increment:r;content:counter(r,decimal-leading-zero);color:var(--line-2)}
.rail a:hover{color:var(--ink);text-decoration:none}
.rail a.is-active{color:var(--mint);border-left-color:var(--mint)}
.rail a.is-active::before{color:var(--mint)}

article{min-width:0}
.sect{padding-block:clamp(30px,3.6vw,52px);border-top:1px solid var(--line);scroll-margin-top:92px}
.sect:first-child{border-top:0;padding-top:0}
.sect__num{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.18em;color:var(--mint);
  display:block;margin-bottom:14px}
.sect h2{margin-bottom:.7em;max-width:22ch}
.sect h3{margin:2em 0 .5em;color:var(--ink)}
.prose{max-width:68ch}
.prose p{margin-bottom:1.15em}
.prose ul{margin:0 0 1.2em;display:flex;flex-direction:column;gap:.55em}
.prose li{position:relative;padding-left:1.5em}
.prose li::before{content:"";position:absolute;left:0;top:.62em;width:9px;height:1px;background:var(--mint)}

/* pull quote */
.pull{margin:2em 0;padding:22px 26px;border-left:3px solid var(--mint);
  background:linear-gradient(90deg,rgba(56,229,186,.07),transparent 70%);border-radius:0 var(--r) var(--r) 0}
.pull p{font-family:var(--f-display);font-size:clamp(1.12rem,2vw,1.45rem);line-height:1.4;
  color:var(--ink);margin:0;letter-spacing:-.015em}

/* module cards */
.mods{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;margin:1.6em 0}
.mod{background:linear-gradient(165deg,var(--panel),rgba(17,26,36,.4));border:1px solid var(--line);
  border-radius:var(--r);padding:20px 20px 22px;position:relative;overflow:hidden;
  transition:transform .3s var(--ease-out),border-color .3s var(--ease)}
.mod::before{content:"";position:absolute;left:0;top:0;width:100%;height:2px;
  background:linear-gradient(90deg,var(--mint),transparent);opacity:.5}
.mod:hover{transform:translateY(-3px);border-color:var(--line-2)}
.mod b{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.14em;color:var(--mint);display:block;margin-bottom:9px}
.mod h3{font-size:1.02rem;margin-bottom:.45em}
.mod p{font-size:.9rem;color:var(--muted);margin:0;line-height:1.6}

/* flow diagram */
.flow{margin:2em 0;display:flex;flex-direction:column;gap:0}
.flow__row{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start;position:relative;padding-bottom:30px}
.flow__row:last-child{padding-bottom:0}
.flow__row::before{content:"";position:absolute;left:19px;top:40px;bottom:2px;width:1px;
  background:linear-gradient(180deg,var(--line-2),transparent)}
.flow__row:last-child::before{display:none}
.flow__dot{width:39px;height:39px;border-radius:50%;border:1px solid var(--line-2);display:grid;place-items:center;
  font-family:var(--f-mono);font-size:.78rem;color:var(--mint);background:var(--bg-2);flex:0 0 auto;z-index:1}
.flow__body b{display:block;color:var(--ink);font-family:var(--f-display);font-size:1.02rem;margin-bottom:3px}
.flow__body span{font-size:.92rem;color:var(--muted)}

/* table */
.tbl-wrap{overflow-x:auto;margin:1.6em 0;border:1px solid var(--line);border-radius:var(--r)}
table{font-size:.9rem;min-width:520px}
caption{caption-side:top;text-align:left;font-family:var(--f-mono);font-size:.72rem;letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted);padding:14px 16px 12px;background:rgba(255,255,255,.015);
  border-bottom:1px solid var(--line)}
th,td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
thead th{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--mint);
  background:rgba(56,229,186,.045);font-weight:500}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:rgba(255,255,255,.018)}
td strong{color:var(--ink)}

/* inline figure */
figure.inline{margin:2em 0;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--panel)}
figure.inline img{width:100%;height:clamp(190px,30vw,340px);object-fit:cover;filter:saturate(.85)}
figure.inline figcaption{padding:13px 16px;font-family:var(--f-mono);font-size:.72rem;color:var(--muted);
  border-top:1px solid var(--line);letter-spacing:.02em}

/* faq */
.faq{margin-top:1.6em;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;padding:19px 44px 19px 0;position:relative;color:var(--ink);
  font-family:var(--f-display);font-size:1.02rem;font-weight:500;list-style:none;
  transition:color .25s var(--ease)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:6px;top:50%;width:11px;height:11px;
  border-right:1.5px solid var(--mint);border-bottom:1.5px solid var(--mint);
  transform:translateY(-70%) rotate(45deg);transition:transform .3s var(--ease)}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq summary:hover{color:var(--mint)}
.faq .a{padding:0 0 22px;max-width:66ch;color:var(--ink-dim);font-size:.95rem}

/* reveal */
.rv{opacity:0;transform:translateY(16px);transition:opacity .7s var(--ease-out),transform .7s var(--ease-out)}
.rv.in{opacity:1;transform:none}
.no-js .rv{opacity:1;transform:none}

/* ---- footer ------------------------------------------------------------ */
.ftr{border-top:1px solid var(--line);background:linear-gradient(180deg,transparent,rgba(0,0,0,.35));
  padding:clamp(46px,6vw,72px) 0 34px;margin-top:20px}
.ftr__top{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1.6fr);gap:clamp(28px,5vw,60px);
  padding-bottom:36px;border-bottom:1px solid var(--line)}
.ftr__brand b{font-family:var(--f-display);font-size:1.2rem;color:var(--ink);letter-spacing:.04em;
  display:flex;align-items:center;gap:10px}
.ftr__brand p{margin-top:14px;font-size:.88rem;color:var(--muted);max-width:40ch}
.linknet__label{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;
  color:var(--muted);font-weight:500;margin-bottom:16px}
.linknet ul{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:10px 22px}
.linknet a{display:block;font-size:.86rem;color:var(--ink-dim);padding:6px 0;border-bottom:1px dashed transparent;
  transition:color .25s var(--ease),border-color .25s var(--ease)}
.linknet a:hover{color:var(--mint);text-decoration:none;border-bottom-color:var(--line-2)}
.linknet small{display:block;font-family:var(--f-mono);font-size:.68rem;color:var(--muted);letter-spacing:.04em}
.ftr__legal{padding-top:24px;display:flex;flex-wrap:wrap;gap:14px 30px;justify-content:space-between;
  font-family:var(--f-mono);font-size:.72rem;color:var(--muted);letter-spacing:.03em}

/* ---- responsive -------------------------------------------------------- */
@media (max-width:1020px){
  .hero__grid{grid-template-columns:1fr;gap:34px}
  .hero h1{max-width:20ch}
  .doc{grid-template-columns:1fr;gap:0}
  .rail{position:static;top:auto;margin-bottom:26px;padding-bottom:22px;border-bottom:1px solid var(--line);
    overflow-x:auto;-webkit-overflow-scrolling:touch}
  .rail ol{flex-direction:row;gap:0;flex-wrap:nowrap}
  .rail a{white-space:nowrap;grid-template-columns:auto 1fr;gap:6px;padding:7px 16px 7px 0;
    border-left:0;border-bottom:2px solid transparent}
  .rail a.is-active{border-left:0;border-bottom-color:var(--mint)}
  .ftr__top{grid-template-columns:1fr;gap:34px}
}
@media (max-width:620px){
  .nav{display:none}
  .hdr__in{min-height:58px;gap:12px}
  .brand small{display:none}
  .brand{font-size:1rem}
  .tag-wp{font-size:.62rem;padding:5px 9px}
  .spec .row{flex-direction:column;gap:3px;align-items:flex-start}
  .spec dd{text-align:left}
  .hero__note{font-size:.68rem}
  .mods{grid-template-columns:1fr}
  .flow__row{grid-template-columns:34px 1fr;gap:14px}
  .flow__dot{width:34px;height:34px}
  .flow__row::before{left:16px;top:36px}
  .ftr__legal{flex-direction:column;gap:10px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .rv{opacity:1;transform:none}
}