/* ── night harbour · dark is the ground ───────────────────────────── */
  :root{
    --bg:#0B1216;          /* near-black, a drag of blågrönt nattvatten */
    --surface:#0F181D;
    --surface-2:#141F26;
    --line:#22323b;        /* hairline, blue-grey biased to accent */
    --ink:#ECE7DC;         /* warm off-white */
    --ink-soft:#B7C0C2;
    --muted:#7C8B92;       /* blue-grey, toward the accent */
    --accent:#3DDC97;      /* fyrljus — the one accent */
    --accent-dim:#2b9e6e;
    --warn:#d8a657;
    --sel:rgba(61,220,151,.18);
    color-scheme:dark;
  }
  :root[data-mode="light"]{
    --bg:#F6F4EF;          /* paper, not white */
    --surface:#FDFCF9;
    --surface-2:#EFEBE2;
    --line:#D8D2C4;
    --ink:#0E1519;
    --ink-soft:#37454b;
    --muted:#5A6B73;
    --accent:#127a4e;      /* fyrljus, deepened for paper contrast */
    --accent-dim:#3DDC97;
    --warn:#8a5a12;
    --sel:rgba(18,122,78,.14);
    color-scheme:light;
  }

  *{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;background:var(--bg);color:var(--ink);
    font-family:"Source Serif 4",Georgia,serif;
    font-size:17px;line-height:1.62;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  ::selection{background:var(--sel)}
  .mono{font-family:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace}
  a{color:var(--accent);text-decoration:none}
  a:hover{text-decoration:underline;text-underline-offset:3px}
  :focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}

  .wrap{max-width:1080px;margin:0 auto;padding:0 28px}

  /* ── status bar ───────────────────────────────────────────────────── */
  .status{
    position:sticky;top:0;z-index:20;
    background:color-mix(in srgb,var(--bg) 88%,transparent);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
  }
  .status .wrap{display:flex;align-items:center;gap:16px;height:52px;
    font-family:"IBM Plex Mono",monospace;font-size:12.5px;color:var(--muted)}
  .brand{display:flex;align-items:center;gap:9px;color:var(--ink);font-weight:500;letter-spacing:.02em}
  .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);
    box-shadow:0 0 0 0 var(--accent);animation:pulse 5s ease-in-out infinite}
  @keyframes pulse{0%,100%{opacity:.35}50%{opacity:1}}
  .status .meta{display:none}
  @media(min-width:720px){.status .meta{display:inline}}
  .spacer{flex:1}
  .ctrls{display:flex;align-items:center;gap:6px}
  .btn{
    font-family:"IBM Plex Mono",monospace;font-size:12px;
    background:transparent;color:var(--muted);
    border:1px solid var(--line);border-radius:5px;
    padding:5px 9px;cursor:pointer;line-height:1;
    transition:color .12s,border-color .12s,background .12s;
  }
  .btn:hover{color:var(--ink);border-color:var(--muted)}
  .btn[aria-pressed="true"]{color:var(--accent);border-color:var(--accent-dim);background:var(--sel)}
  .btn kbd{font:inherit;color:var(--accent);padding:0 2px}

  /* ── document body ────────────────────────────────────────────────── */
  main{padding:64px 0 40px}
  .doc{display:grid;grid-template-columns:minmax(0,1fr);gap:0}
  @media(min-width:940px){.doc{grid-template-columns:minmax(0,62ch) 1fr;column-gap:52px}}

  .eyebrow{font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.14em;
    text-transform:uppercase;color:var(--muted);margin:0 0 22px}

  h1{font-family:"IBM Plex Mono",monospace;font-weight:600;
    font-size:clamp(30px,6vw,52px);line-height:1.04;letter-spacing:-.01em;
    margin:0 0 6px;color:var(--ink);text-wrap:balance}
  h1 .etym{display:block;font-size:15px;font-weight:400;color:var(--muted);
    letter-spacing:0;margin-top:12px;font-style:italic;font-family:"Source Serif 4",serif}
  .lede{font-family:"IBM Plex Mono",monospace;font-size:clamp(18px,2.6vw,23px);
    font-weight:500;line-height:1.32;color:var(--ink);margin:26px 0 0;text-wrap:balance}

  .peek{color:var(--muted);font-style:italic;font-size:16px;margin:16px 0 30px}

  .body p{margin:0 0 18px;color:var(--ink-soft);max-width:62ch}
  .body p b,.body p strong{color:var(--ink);font-weight:400;
    box-shadow:inset 0 -.5em 0 var(--sel)}

  .cta{margin:30px 0 8px;display:flex;flex-direction:column;gap:10px;
    font-family:"IBM Plex Mono",monospace;font-size:14.5px}
  .cta a{display:flex;align-items:baseline;gap:12px;color:var(--ink-soft);
    padding:11px 14px;border:1px solid var(--line);border-radius:7px;
    background:var(--surface);transition:border-color .14s,transform .14s,color .14s}
  .cta a:hover{border-color:var(--accent-dim);color:var(--ink);transform:translateX(3px);text-decoration:none}
  .cta a .arrow{color:var(--accent)}
  .cta a .k{color:var(--muted)}

  /* margin voice */
  .margin{border-left:1px solid var(--line);padding-left:22px}
  @media(max-width:939px){.margin{border-left:0;padding-left:0;margin-top:8px}}
  .note{font-style:italic;color:var(--muted);font-size:15.5px;line-height:1.55;
    margin:0 0 26px;position:relative}
  .note::before{content:"—";color:var(--accent-dim);margin-right:8px}
  @media(max-width:939px){
    .note{border-left:2px solid var(--line);padding-left:16px;margin:6px 0 24px}
    .note::before{content:none}
  }

  /* tools strip — real, from the spec */
  .tools{margin:44px 0 0;border-top:1px solid var(--line);padding-top:26px}
  .tools h2{font-family:"IBM Plex Mono",monospace;font-size:13px;font-weight:500;
    letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:0 0 16px}
  .tgrid{display:grid;grid-template-columns:1fr;gap:2px 26px;
    font-family:"IBM Plex Mono",monospace;font-size:13px}
  @media(min-width:620px){.tgrid{grid-template-columns:1fr 1fr}}
  .trow{display:flex;gap:12px;padding:6px 0;border-bottom:1px solid color-mix(in srgb,var(--line) 55%,transparent);align-items:baseline}
  .trow code{color:var(--accent);white-space:nowrap}
  .trow span{color:var(--muted);font-family:"Source Serif 4",serif;font-style:italic;font-size:14px}
  .trow.irr code{color:var(--warn)}

  /* ── agent (machine) view ─────────────────────────────────────────── */
  .agent{display:none;padding:52px 0 60px}
  pre.raw{
    font-family:"IBM Plex Mono",monospace;font-size:13px;line-height:1.7;
    color:var(--ink-soft);background:var(--surface);border:1px solid var(--line);
    border-radius:10px;padding:26px 24px;margin:0;
    overflow-x:auto;white-space:pre;tab-size:2;
  }
  pre.raw .h{color:var(--accent);font-weight:600}
  pre.raw .q{color:var(--ink)}
  pre.raw .c{color:var(--muted)}
  pre.raw .k{color:var(--warn)}
  .agent .servedby{font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--muted);margin:0 0 16px}

  body[data-view="agent"] .human{display:none}
  body[data-view="agent"] .agent{display:block}

  footer{border-top:1px solid var(--line);margin-top:20px;padding:28px 0 60px;
    font-family:"IBM Plex Mono",monospace;font-size:12.5px;color:var(--muted)}
  footer .wrap{display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center}
  footer a{color:var(--muted)}
  footer a:hover{color:var(--accent)}
  footer .sep{opacity:.4}

  [hidden]{display:none!important}
  @media(prefers-reduced-motion:reduce){.dot{animation:none;opacity:.9}*{transition:none!important}}
/* ── spec pages (docs/agents/invite/principer) ────────────────────── */
a.brand{color:var(--ink)}
a.brand:hover{color:var(--accent);text-decoration:none}
.status .meta a{color:var(--accent)}
.body h2{font-family:"IBM Plex Mono",monospace;font-size:13px;font-weight:500;
  letter-spacing:.06em;text-transform:uppercase;color:var(--muted);
  margin:42px 0 14px;padding-top:24px;border-top:1px solid var(--line)}
.body h2 .no{color:var(--accent)}
.body code,.note code{font-family:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:.85em;color:var(--accent);word-break:break-word}
.body pre{font-family:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:12.5px;line-height:1.65;color:var(--ink-soft);background:var(--surface);
  border:1px solid var(--line);border-radius:8px;padding:14px 16px;margin:0 0 18px;
  overflow-x:auto;max-width:100%}
.body pre code{color:inherit;font-size:inherit}
.body table{border-collapse:collapse;width:100%;font-family:"IBM Plex Mono",monospace;
  font-size:12.5px;margin:0 0 18px}
.body th{text-align:left;color:var(--muted);font-weight:500;font-size:11.5px;
  letter-spacing:.05em;text-transform:uppercase}
.body th,.body td{padding:6px 12px 6px 0;
  border-bottom:1px solid color-mix(in srgb,var(--line) 55%,transparent);vertical-align:top}
.body td code{font-size:12.5px}
.speclist{font-family:"IBM Plex Mono",monospace;font-size:13px;margin:0 0 18px;
  padding:0;list-style:none}
.speclist li{display:flex;gap:12px;padding:6px 0;align-items:baseline;flex-wrap:wrap;
  border-bottom:1px solid color-mix(in srgb,var(--line) 55%,transparent)}
.speclist li code{color:var(--accent);white-space:nowrap;font-size:13px}
.speclist li span{color:var(--muted);font-family:"Source Serif 4",serif;
  font-style:italic;font-size:14px}
.speclist li.irr code{color:var(--warn)}
.warnline{color:var(--warn)}
.body td:first-child{white-space:nowrap;padding-right:18px}
.body td:first-child code{word-break:normal}