/* nerv — the terminal in Central Dogma.
 *
 * One visual world, deliberately: black ground, NERV orange, a heavy condensed face for the
 * chrome and a monospace for everything that is read. There is no light theme — the background
 * and every colour are painted explicitly, so the page holds whatever the host is doing. */
:root {
  --void:    #08090a;   /* the ground */
  --panel:   #0e1012;   /* a lit surface */
  --sunk:    #131619;   /* inside a panel */
  --rule:    #23282c;   /* a hairline */
  --rule-up: #343b41;   /* a hairline that matters */
  --ink:     #e6e4dd;   /* read this */
  --dim:     #96999a;   /* read this second */
  --faint:   #5f6669;   /* labels, numbers, furniture */
  --nerv:    #ff2a20;   /* The red the logos are drawn in. Structure, and anything that refuses. */
  --nerv-dim:#ff2a2020;
  --alert:   #ff4033;   /* hotter than the structural red, so a wall still reads as one */
  --go:      #7ee081;   /* a thing that worked */
  --disp: "Anton", "Arial Narrow", sans-serif;
  --cond: "Barlow Condensed", "Arial Narrow", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --jp:   "Noto Sans JP", var(--mono);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--void); color: var(--ink);
  font-family: var(--mono); font-size: 13.5px; line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  /* Faint scanlines. Barely there — it is a document, not a screensaver. */
  background-image: repeating-linear-gradient(
    180deg, #ffffff04 0 1px, transparent 1px 3px);
}

/* ---- the bar across the top ----------------------------------------------------------------- */
.top { border-bottom: 1px solid var(--rule-up); background: var(--panel); position: sticky; top: 0;
       z-index: 30; }
.top::after { content: ""; display: block; height: 2px;
  background: repeating-linear-gradient(135deg, var(--nerv) 0 10px, #0000 10px 20px); opacity: .55; }
.top .bar { max-width: 1300px; margin: 0 auto; padding: 0 22px; display: flex; align-items: stretch; }
.brand { display: flex; align-items: center; gap: 12px; padding: 11px 22px 11px 0; text-decoration: none;
         border-right: 1px solid var(--rule-up); margin-right: 22px; }
.brand .mark { width: 26px; height: 26px; flex: none; }
.brand b { font-family: var(--disp); font-size: 25px; letter-spacing: .06em; color: var(--ink);
           line-height: 1; text-transform: uppercase; }
.brand i { font-family: var(--jp); font-style: normal; font-size: 9px; letter-spacing: .3em;
           color: var(--nerv); display: block; margin-top: 3px; }
.top nav { display: flex; flex-wrap: wrap; }
.top nav a { display: flex; align-items: center; padding: 0 17px; font-family: var(--cond);
             font-size: 14px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase;
             color: var(--dim); text-decoration: none; border-bottom: 2px solid transparent; }
.top nav a:hover { color: var(--nerv); }
.top nav a[aria-current] { color: var(--ink); border-bottom-color: var(--nerv);
                           background: linear-gradient(180deg, #0000, var(--nerv-dim)); }
.ghost { margin-left: auto; display: flex; align-items: center; gap: 16px; font-size: 10px;
         letter-spacing: .18em; text-transform: uppercase; }
.ghost a { color: var(--faint); text-decoration: none; }
.ghost a:hover { color: var(--nerv); }

/* ---- layout ---------------------------------------------------------------------------------- */
.wrap { max-width: 1300px; margin: 0 auto; padding: 0 22px 90px;
        display: grid; grid-template-columns: 236px minmax(0, 1fr); gap: 0 40px; }
.wrap.wide { grid-template-columns: minmax(0, 1fr); }
aside { padding: 30px 0 0; position: sticky; top: 53px; align-self: start;
        max-height: calc(100vh - 70px); overflow-y: auto; }
aside h5 {
  /* Indented to the same left edge as the items below, and laid out on one baseline: the
   * Japanese face has its own metrics, so aligning the boxes is not aligning the text. */
  display: flex; align-items: baseline; gap: 10px;
  margin: 0 0 10px; padding-left: 15px; font-weight: 600;
}
aside h5 .en { font-family: var(--cond); font-size: 13px; letter-spacing: .22em;
               text-transform: uppercase; color: var(--nerv); }
aside h5 .jp { font-family: var(--jp); font-size: 10px; letter-spacing: .2em; color: var(--faint);
               font-weight: 400; }
aside ul { list-style: none; margin: 0 0 24px; padding: 0; border-left: 1px solid var(--rule); }
aside li a { display: block; padding: 5px 0 5px 14px; color: var(--dim); text-decoration: none;
             font-size: 12.5px; margin-left: -1px; border-left: 1px solid transparent; }
aside li a:hover { color: var(--ink); }
aside li a[aria-current] { color: var(--nerv); border-left-color: var(--nerv);
                           background: linear-gradient(90deg, var(--nerv-dim), #0000); }
main { padding-top: 30px; min-width: 0; }

/* ---- the title card -------------------------------------------------------------------------- */
h1 { font-family: var(--disp); font-size: clamp(38px, 6.5vw, 72px); letter-spacing: .01em;
     line-height: .92; margin: 0; text-transform: uppercase; color: var(--ink); }
.lede { color: var(--dim); font-size: 15px; max-width: 70ch; margin: 16px 0 0;
        border-left: 2px solid var(--nerv); padding-left: 14px; }
.lede b, p b { color: var(--ink); font-weight: 600; }

h2 { font-family: var(--cond); font-weight: 600; font-size: 27px; letter-spacing: .12em;
     text-transform: uppercase; margin: 52px 0 0; padding: 0 0 9px; color: var(--ink);
     border-bottom: 1px solid var(--rule-up); scroll-margin-top: 70px; position: relative; }
h2::after { content: ""; position: absolute; left: 0; bottom: -1px; width: 74px; height: 1px;
            background: var(--nerv); }
h3 { font-family: var(--cond); font-weight: 600; font-size: 19px; letter-spacing: .14em;
     text-transform: uppercase; margin: 34px 0 0; color: var(--nerv); scroll-margin-top: 70px; }
p { max-width: 76ch; color: var(--dim); margin: 13px 0 0; }
main a { color: var(--nerv); text-decoration: none; border-bottom: 1px solid var(--nerv-dim); }
main a:hover { border-bottom-color: var(--nerv); }

code { background: var(--sunk); border: 1px solid var(--rule); padding: 0 5px; font-size: .92em;
       color: var(--ink); }
pre { background: var(--sunk); border: 1px solid var(--rule); border-left: 2px solid var(--nerv);
      padding: 14px 16px; overflow-x: auto; font-size: 12px; line-height: 1.7; margin: 16px 0 0;
      color: var(--ink); }
pre code { background: none; border: 0; padding: 0; }
pre .c { color: var(--faint); }
pre .a { color: var(--nerv); }

ul.plain { list-style: none; padding: 0; margin: 16px 0 0; }
ul.plain li { padding: 8px 0 8px 22px; position: relative; color: var(--dim); max-width: 76ch;
              border-bottom: 1px solid var(--rule); }
ul.plain li::before { content: "▸"; position: absolute; left: 2px; color: var(--nerv); }

/* ---- panels ---------------------------------------------------------------------------------- */
.note { margin-top: 20px; padding: 14px 18px; background: var(--nerv-dim);
        border-left: 2px solid var(--nerv); font-size: 13px; max-width: 80ch; color: var(--dim); }
.note b { color: var(--ink); font-weight: 600; }

.plate { margin-top: 26px; border: 1px solid var(--rule-up); background: var(--panel);
         clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px)); }
.plate > header { padding: 10px 18px; border-bottom: 1px solid var(--rule-up); display: flex;
                  align-items: baseline; gap: 14px; flex-wrap: wrap;
                  background: linear-gradient(90deg, var(--nerv-dim), #0000 60%); }
.plate > header b { font-family: var(--cond); font-weight: 600; font-size: 16px; letter-spacing: .2em;
                    text-transform: uppercase; color: var(--nerv); }
.plate > header span { color: var(--faint); font-size: 11.5px; }
.plate .body { padding: 16px 18px 20px; }
.dia { overflow-x: auto; }
.dia svg { display: block; margin: 0 auto; max-width: 100%; height: auto; }

table { border-collapse: collapse; width: 100%; margin-top: 18px; font-size: 12.5px; }
th, td { text-align: left; padding: 8px 16px 8px 0; border-bottom: 1px solid var(--rule);
         vertical-align: top; }
th { font-family: var(--cond); font-size: 12px; letter-spacing: .18em; text-transform: uppercase;
     color: var(--nerv); font-weight: 600; border-bottom-color: var(--rule-up); }
td:first-child { color: var(--ink); white-space: nowrap; padding-right: 22px; }
td { color: var(--dim); }
td.wrap-ok { white-space: normal; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(238px, 1fr)); gap: 16px;
         margin-top: 24px; }
.card { border: 1px solid var(--rule-up); background: var(--panel); padding: 18px;
        clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%); }
.card h4 { font-family: var(--disp); font-size: 22px; letter-spacing: .04em; text-transform: uppercase;
           margin: 0; color: var(--ink); }
.card .role { font-family: var(--cond); font-size: 12px; letter-spacing: .2em; text-transform: uppercase;
              color: var(--nerv); margin-top: 3px; }
.card p { font-size: 12.5px; margin-top: 9px; }
.card a { font-family: var(--cond); font-size: 13px; letter-spacing: .16em; text-transform: uppercase;
          display: inline-block; margin-top: 12px; border: 0; }

.next { display: flex; justify-content: space-between; gap: 18px; margin-top: 58px;
        border-top: 1px solid var(--rule-up); padding-top: 18px; font-size: 12.5px; }
.next a { color: var(--dim); text-decoration: none; border: 0; }
.next a:hover { color: var(--nerv); }
.next .lbl { display: block; font-family: var(--cond); font-size: 11px; letter-spacing: .2em;
             text-transform: uppercase; color: var(--faint); }

footer.foot { border-top: 1px solid var(--rule-up); background: var(--panel); }
footer.foot::before { content: ""; display: block; height: 2px;
  background: repeating-linear-gradient(135deg, var(--nerv) 0 10px, #0000 10px 20px); opacity: .4; }
footer.foot .in { max-width: 1300px; margin: 0 auto; padding: 24px 22px; font-size: 11px;
                  letter-spacing: .08em; color: var(--faint); display: flex; gap: 24px;
                  flex-wrap: wrap; align-items: center; }
footer.foot a { color: var(--dim); text-decoration: none; }
footer.foot a:hover { color: var(--nerv); }
footer.foot .jp { font-family: var(--jp); letter-spacing: .3em; color: var(--nerv); }

/* ---- drawing primitives ---------------------------------------------------------------------- */
.n-box  { fill: var(--sunk); stroke: var(--rule-up); stroke-width: 1; }
.n-ext  { fill: var(--void); stroke: var(--rule-up); stroke-width: 1; stroke-dasharray: 4 3; }
.n-hub  { fill: var(--nerv-dim); stroke: var(--nerv); stroke-width: 1.4; }
.n-stop { fill: #ff40331f; stroke: var(--alert); stroke-width: 1; }
.n-lab  { font-family: var(--mono); font-size: 11.5px; font-weight: 600; fill: var(--ink);
          text-anchor: middle; }
.n-sub  { font-family: var(--mono); font-size: 9.5px; fill: var(--dim); text-anchor: middle; }
.e-line { stroke: var(--rule-up); stroke-width: 1.2; fill: none; }
.e-line.dash { stroke-dasharray: 4 3; stroke: var(--faint); }
.e-line.hot  { stroke: var(--nerv); stroke-width: 1.6; }
.e-lab  { font-family: var(--mono); font-size: 9.5px; fill: var(--dim); text-anchor: middle; }
.e-lab.hot { fill: var(--nerv); }
.e-chip { fill: var(--panel); }
.lane   { stroke: var(--rule-up); stroke-width: 1; stroke-dasharray: 3 4; }
.step-n { font-family: var(--mono); font-size: 9px; fill: var(--faint); text-anchor: middle; }

.graph { margin-top: 10px; overflow-x: auto; }
.graph svg { display: block; }
.node rect { fill: var(--sunk); stroke: var(--rule-up); stroke-width: 1;
             transition: fill .12s ease, stroke .12s ease; }
.node text { font-family: var(--mono); font-size: 11px; font-weight: 500; fill: var(--ink);
             dominant-baseline: middle; text-anchor: middle; }
.node .loc { font-size: 9px; font-weight: 400; fill: var(--faint); font-variant-numeric: tabular-nums; }
.edge { stroke: var(--rule); stroke-width: 1; fill: none; }
.edge.dev { stroke-dasharray: 3 3; stroke: #ffffff14; }
.node:hover rect, .node.lit rect { fill: var(--nerv-dim); stroke: var(--nerv); }
.edge.lit { stroke: var(--nerv); stroke-width: 1.7; }
.rank-label { font-family: var(--mono); font-size: 9px; fill: var(--faint); letter-spacing: .1em;
              text-anchor: end; dominant-baseline: middle; }
.unit-head { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap;
             border-bottom: 1px solid var(--rule); padding-bottom: 9px; margin-top: 28px; }
.unit-head h4 { font-family: var(--cond); font-weight: 600; font-size: 18px; letter-spacing: .16em;
                text-transform: uppercase; margin: 0; color: var(--ink); }
.unit-head .role { color: var(--dim); font-size: 12px; }
.unit-head .meta { margin-left: auto; font-size: 10px; color: var(--faint); letter-spacing: .1em;
                   text-transform: uppercase; }


@media (prefers-reduced-motion: reduce) { * { transition: none !important; } html { scroll-behavior: auto; } }
:focus-visible { outline: 2px solid var(--nerv); outline-offset: 2px; }

/* ---- the marks ------------------------------------------------------------------------------- */
.brand .mark { width: 30px; height: 30px; flex: none; display: block; }
.hero { display: flex; align-items: center; gap: 26px; flex-wrap: wrap; margin-bottom: 4px; }
.hero img { width: 96px; height: 96px; flex: none; }
.hero .who { min-width: 0; }
.wordmark { display: block; max-width: 360px; width: 100%; height: auto; margin: 0 0 6px; }
.card .badge { display: flex; align-items: center; gap: 12px; }
.card .badge img { width: 40px; height: 40px; flex: none; }
.card .badge .who { min-width: 0; }
.four { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 18px;
        margin-top: 26px; }
.four a { display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 18px 10px;
          border: 1px solid var(--rule); background: var(--panel); text-decoration: none;
          transition: border-color .12s ease, background .12s ease; }
.four a:hover { border-color: var(--nerv); background: var(--sunk); }
.four img { width: 62px; height: 62px; }
.four span { font-family: var(--cond); font-size: 15px; letter-spacing: .18em; text-transform: uppercase;
             color: var(--dim); }
.four a:hover span { color: var(--ink); }

/* ---- narrower than a desktop ------------------------------------------------------------------ */
/* A table is the one thing here that cannot be made narrow: its content decides its width. So it
 * scrolls inside its own box rather than taking the page sideways with it. */
.tw { overflow-x: auto; margin-top: 18px; }
.tw table { margin-top: 0; }
code { overflow-wrap: anywhere; }

@media (max-width: 980px) {
  .wrap { grid-template-columns: minmax(0, 1fr); gap: 0; }
  aside { position: static; max-height: none; overflow: visible; padding: 22px 0 18px;
          border-bottom: 1px solid var(--rule); }
  aside ul { margin-bottom: 0; display: flex; flex-wrap: wrap; border-left: 0; }
  aside li a { padding: 4px 14px 4px 0; border-left: 0; }
  aside li a[aria-current] { background: none; }
  aside h5 { padding-left: 0; }
  main { padding-top: 24px; }
}

@media (max-width: 700px) {
  body { font-size: 13px; }
  /* The bar keeps the mark and lets the sections scroll under a thumb, rather than wrapping into
   * two rows that eat a third of a phone screen — it is sticky, so its height is a tax on every
   * page of the site. */
  .top .bar { padding: 0 14px; }
  .brand { padding: 9px 14px 9px 0; margin-right: 14px; gap: 9px; }
  .brand .mark { width: 24px; height: 24px; }
  .brand b { font-size: 20px; }
  .brand i { font-size: 8px; letter-spacing: .22em; }
  .top nav { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; }
  .top nav::-webkit-scrollbar { display: none; }
  .top nav a { padding: 0 12px; font-size: 13px; white-space: nowrap; }
  .ghost { display: none; }

  .wrap { padding: 0 14px 64px; }
  h1 { font-size: clamp(30px, 9vw, 44px); }
  h2 { font-size: 22px; margin-top: 40px; }
  h3 { font-size: 17px; }
  .lede { font-size: 14px; padding-left: 12px; }

  .hero { gap: 16px; }
  .hero img { width: 64px; height: 64px; }
  .four { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .four img { width: 52px; height: 52px; }
  .cards { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .plate .body { padding: 12px 12px 16px; }
  .plate > header { padding: 9px 12px; }
  pre { font-size: 11.5px; padding: 12px 12px; }
  .next { flex-direction: column; gap: 14px; }
  footer.foot .in { gap: 12px 18px; }
}

@media (max-width: 420px) {
  .four { grid-template-columns: minmax(0, 1fr); }
  .brand i { display: none; }
}