:root{
  --bg:#FBFAF8; --card:#FFFFFF; --sunk:#F3F2EE;
  --line:#E2E0DA; --line-soft:#EDEBE5;
  --ink:#16181C; --ink-2:#4A5058; --ink-3:#7B8189;
  --go:#0E7A6B; --go-bg:#E6F4F1;
  --warn:#A85B06; --warn-bg:#FDF3E3;
  --stop:#A8291E; --stop-bg:#FBEBE9;
  --s1:#0E7A6B; --s2:#B4541F; --s3:#2D6DA8; --s4:#8A6D1F; --s5:#7A4A86;
  --b-floor:#B9B4A8; --b-mid:#3E8F84; --b-top:#0E7A6B; --on-bar:#FFFFFF;
  --shadow:rgba(22,24,28,.07);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#14161A; --card:#1B1E23; --sunk:#191C21;
  --line:#2B3037; --line-soft:#23272D;
  --ink:#E9EBEE; --ink-2:#A9B0B9; --ink-3:#767D86;
  --go:#4FBFAD; --go-bg:#102C29;
  --warn:#E0A050; --warn-bg:#2C2314;
  --stop:#E8776B; --stop-bg:#2E1815;
  --s1:#4FBFAD; --s2:#E0834F; --s3:#6BA8DC; --s4:#C9A94E; --s5:#B08DC0;
  --b-floor:#4A4E55; --b-mid:#34786F; --b-top:#4FBFAD; --on-bar:#0C1A18;
  --shadow:rgba(0,0,0,.3);
}}
:root[data-theme="dark"]{
  --bg:#14161A; --card:#1B1E23; --sunk:#191C21;
  --line:#2B3037; --line-soft:#23272D;
  --ink:#E9EBEE; --ink-2:#A9B0B9; --ink-3:#767D86;
  --go:#4FBFAD; --go-bg:#102C29;
  --warn:#E0A050; --warn-bg:#2C2314;
  --stop:#E8776B; --stop-bg:#2E1815;
  --s1:#4FBFAD; --s2:#E0834F; --s3:#6BA8DC; --s4:#C9A94E; --s5:#B08DC0;
  --b-floor:#4A4E55; --b-mid:#34786F; --b-top:#4FBFAD; --on-bar:#0C1A18;
  --shadow:rgba(0,0,0,.3);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:'IBM Plex Sans',-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
/* ---- site nav ---- */
.topbar{position:sticky;top:0;z-index:20;background:var(--bg);
  border-bottom:1px solid var(--line);backdrop-filter:saturate(1.4) blur(6px)}
.topbar-in{max-width:940px;margin:0 auto;padding:0 1.5rem;
  display:flex;align-items:center;gap:1.5rem;flex-wrap:wrap}
.brand{font-family:'IBM Plex Mono',monospace;font-size:.82rem;font-weight:700;
  letter-spacing:-.01em;color:var(--ink);text-decoration:none;padding:.9rem 0;white-space:nowrap}
.brand span{color:var(--go)}
.tabs{display:flex;gap:.15rem;margin-left:auto;flex-wrap:wrap}
.tabs a{font-family:'IBM Plex Mono',monospace;font-size:.78rem;font-weight:500;
  color:var(--ink-2);text-decoration:none;padding:.9rem .7rem;
  border-bottom:2px solid transparent;white-space:nowrap}
.tabs a:hover{color:var(--ink)}
.tabs a[aria-current="page"]{color:var(--go);border-bottom-color:var(--go);font-weight:600}
.tabs a:focus-visible{outline:2px solid var(--go);outline-offset:-2px;border-radius:3px}
/* ---- layout ---- */
.wrap{max-width:940px;margin:0 auto;padding:2.5rem 1.5rem 5rem}
.narrow{max-width:70ch}
.hero{border-bottom:2px solid var(--line);padding-bottom:1.75rem;margin-bottom:2rem}
.kicker{font-family:'IBM Plex Mono',monospace;font-size:.72rem;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;color:var(--go);margin:0 0 .6rem}
h1{font-family:'IBM Plex Mono',monospace;font-size:2.15rem;font-weight:700;
  letter-spacing:-.03em;line-height:1.14;margin:0 0 .7rem;text-wrap:balance}
.subtitle{font-family:'IBM Plex Mono',monospace;font-size:1.02rem;font-weight:500;
  color:var(--go);margin:-.35rem 0 .75rem;letter-spacing:-.01em;text-wrap:balance}
.standfirst{font-size:1.07rem;color:var(--ink-2);margin:0;max-width:64ch}
h2{font-family:'IBM Plex Mono',monospace;font-size:1.2rem;font-weight:600;letter-spacing:-.01em;
  margin:3rem 0 .5rem;padding-bottom:.45rem;border-bottom:1px solid var(--line);text-wrap:balance}
h3{font-family:'IBM Plex Mono',monospace;font-size:.95rem;font-weight:600;color:var(--ink-2);margin:1.9rem 0 .5rem}
p{margin:.75rem 0;max-width:70ch}
.lede{font-size:1.02rem;color:var(--ink-2)}
ul,ol{max-width:70ch;padding-left:1.15rem}
li{margin:.4rem 0}
a{color:var(--go);text-decoration:none;border-bottom:1px solid transparent}
a:hover{border-bottom-color:currentColor}
a:focus-visible{outline:2px solid var(--go);outline-offset:2px;border-radius:2px}
code{font-family:'IBM Plex Mono',monospace;font-size:.85em;background:var(--sunk);
  padding:.12em .38em;border-radius:3px}
pre{background:var(--sunk);border:1px solid var(--line-soft);border-radius:7px;
  padding:.9rem 1rem;overflow-x:auto;font-family:'IBM Plex Mono',monospace;
  font-size:.8rem;line-height:1.55;margin:1rem 0}
pre code{background:none;padding:0}
/* ---- figures & tables ---- */
.fig{background:var(--card);border:1px solid var(--line);border-radius:9px;
  padding:1.1rem 1rem .5rem;margin:1.5rem 0;box-shadow:0 1px 3px var(--shadow)}
.fig figcaption{font-family:'IBM Plex Mono',monospace;font-size:.72rem;font-weight:600;
  letter-spacing:.07em;text-transform:uppercase;color:var(--ink-3);margin-bottom:.7rem}
svg.chart{width:100%;height:auto;display:block;font-family:'IBM Plex Sans',sans-serif}
.chart .grid{stroke:var(--line-soft);stroke-width:1}
.chart .axis{stroke:var(--line);stroke-width:1}
.chart .tick,.chart .axlbl{fill:var(--ink-3);font-size:11px;
  font-family:'IBM Plex Mono',monospace;font-variant-numeric:tabular-nums}
.chart .rowlbl{fill:var(--ink-2);font-size:12.5px}
.chart .rownote{fill:var(--on-bar);font-size:10.5px;font-family:'IBM Plex Mono',monospace;
  letter-spacing:.04em}
.chart .rowval{font-family:'IBM Plex Mono',monospace;font-size:12.5px;font-weight:700;
  font-variant-numeric:tabular-nums}
.chart .bar.b-floor{fill:var(--b-floor)} .chart .bar.b-mid{fill:var(--b-mid)} .chart .bar.b-top{fill:var(--b-top)}
.chart text.rowval.b-floor{fill:var(--ink-3)} .chart text.rowval.b-mid{fill:var(--ink-2)} .chart text.rowval.b-top{fill:var(--go)}
.chart .ln{fill:none;stroke-width:2;stroke-linejoin:round;stroke-linecap:round}
.chart .pt{stroke:var(--card);stroke-width:2}
.chart .key{stroke-width:2.5;stroke-linecap:round}
.chart .endlbl{font-size:11px;fill:var(--ink-2)}
.chart .endlbl .val{font-family:'IBM Plex Mono',monospace;font-weight:600;fill:var(--ink);font-variant-numeric:tabular-nums}
.chart .leader{stroke:var(--line);stroke-width:1}
.s1{stroke:var(--s1);fill:var(--s1)} .s2{stroke:var(--s2);fill:var(--s2)}
.s3{stroke:var(--s3);fill:var(--s3)} .s4{stroke:var(--s4);fill:var(--s4)} .s5{stroke:var(--s5);fill:var(--s5)}
.chart .ln.s1,.chart .ln.s2,.chart .ln.s3,.chart .ln.s4,.chart .ln.s5{fill:none}
.legend{display:flex;flex-wrap:wrap;gap:.9rem;margin:.2rem 0 .9rem;font-size:.8rem;color:var(--ink-2)}
.legend i{display:inline-block;width:16px;height:0;border-top:2.5px solid;border-radius:2px;margin-right:.35rem;vertical-align:middle}
.legend i.s1{border-color:var(--s1)} .legend i.s2{border-color:var(--s2)}
.legend i.s3{border-color:var(--s3)} .legend i.s4{border-color:var(--s4)} .legend i.s5{border-color:var(--s5)}
.tw{overflow-x:auto;border:1px solid var(--line);border-radius:8px;margin:1.2rem 0}
table{width:100%;border-collapse:collapse;font-size:.87rem}
thead th{font-family:'IBM Plex Mono',monospace;font-size:.7rem;font-weight:600;text-transform:uppercase;
  letter-spacing:.06em;background:var(--sunk);color:var(--ink-2);padding:.6rem .8rem;text-align:left;
  white-space:nowrap;border-bottom:1px solid var(--line)}
tbody td{padding:.6rem .8rem;border-bottom:1px solid var(--line-soft);vertical-align:top}
tbody tr:last-child td{border-bottom:none}
td.n{font-family:'IBM Plex Mono',monospace;font-variant-numeric:tabular-nums;text-align:right;white-space:nowrap}
td .sub{display:block;font-size:.76rem;color:var(--ink-3);margin-top:2px}
tr.hl td{background:var(--go-bg)}
/* ---- callouts ---- */
.box{border-left:3px solid var(--go);background:var(--go-bg);padding:.85rem 1.1rem;
  border-radius:0 7px 7px 0;margin:1.3rem 0;font-size:.94rem;max-width:74ch}
.box strong:first-child{color:var(--go)}
.box.warn{border-left-color:var(--warn);background:var(--warn-bg)}
.box.warn strong:first-child{color:var(--warn)}
.box.stop{border-left-color:var(--stop);background:var(--stop-bg)}
.box.stop strong:first-child{color:var(--stop)}
/* ---- misc ---- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.75rem;margin:1.3rem 0}
.stat{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:.8rem 1rem}
.stat .v{font-family:'IBM Plex Mono',monospace;font-size:1.55rem;font-weight:700;line-height:1.1;letter-spacing:-.02em}
.stat .v small{font-size:.78rem;font-weight:500;color:var(--ink-3);margin-left:.15rem}
.stat .l{font-family:'IBM Plex Mono',monospace;font-size:.68rem;text-transform:uppercase;
  letter-spacing:.06em;color:var(--ink-3);margin-top:.3rem}
.badge{display:inline-block;font-family:'IBM Plex Mono',monospace;font-size:.7rem;font-weight:600;
  padding:.12rem .42rem;border-radius:3px;background:var(--go-bg);color:var(--go);white-space:nowrap}
.badge.warn{background:var(--warn-bg);color:var(--warn)}
.badge.stop{background:var(--stop-bg);color:var(--stop)}
.foot{margin-top:3.5rem;padding-top:1.2rem;border-top:1px solid var(--line);font-size:.83rem;color:var(--ink-3)}
.foot p{max-width:74ch}
@media (max-width:640px){
  .wrap{padding:1.5rem 1rem 3rem} h1{font-size:1.55rem}
  .topbar-in{padding:0 1rem} .brand{padding:.7rem 0} .tabs{margin-left:0;width:100%}
  .tabs a{padding:.5rem .55rem}
}

/* ================= log-page additions ================= */
.section{margin-bottom:3rem}
.section-note{font-size:.88rem;color:var(--ink-2);margin:.35rem 0 1rem;max-width:74ch}
td.mono{font-family:'IBM Plex Mono',monospace;font-variant-numeric:tabular-nums;font-size:.82rem}
.mono{font-family:'IBM Plex Mono',monospace}
tr.failed td{color:var(--ink-3)}
.fn{font-size:.7rem;vertical-align:super;color:var(--go);font-family:'IBM Plex Mono',monospace}
.incidents{margin:0;padding-left:1.2rem;font-size:.9rem;color:var(--ink-2);max-width:80ch}
.incidents li{margin:.35rem 0}
.incidents strong{color:var(--ink)}
/* in-page contents */
.toc-inline{background:var(--card);border:1px solid var(--line);border-radius:8px;
  padding:1rem 1.25rem;margin:0 0 2.5rem}
.toc-title{font-family:'IBM Plex Mono',monospace;font-size:.72rem;font-weight:600;
  text-transform:uppercase;letter-spacing:.08em;color:var(--ink-3);margin:0 0 .5rem}
.toc-inline ol{margin:0;padding-left:1.25rem;columns:2;column-gap:2rem;max-width:none}
.toc-inline li{font-size:.86rem;padding:.12rem 0;break-inside:avoid;margin:0}
@media (max-width:640px){.toc-inline ol{columns:1}}
/* recommendation cards (section 9) */
.rec-grid{display:grid;gap:1rem}
.rec-card{background:var(--card);border:1px solid var(--line);border-radius:8px;
  padding:1rem 1.25rem;display:grid;grid-template-columns:2.5rem 1fr;gap:0 1rem;align-items:start}
.rec-card.top{border-color:var(--warn);border-width:2px}
.rec-rank{font-family:'IBM Plex Mono',monospace;font-size:1.5rem;font-weight:700;
  color:var(--warn);line-height:1;padding-top:.15rem}
.rec-body h4{font-family:'IBM Plex Mono',monospace;font-size:.92rem;font-weight:600;margin:0 0 .25rem}
.rec-body p{font-size:.85rem;color:var(--ink-2);margin:0 0 .5rem;max-width:74ch}
.rec-stats{display:flex;flex-wrap:wrap;gap:.5rem}
.rec-stat{font-family:'IBM Plex Mono',monospace;font-size:.75rem;padding:.2rem .5rem;
  border-radius:3px;background:var(--sunk);color:var(--ink-2)}
/* header chips (section 10+) */
.specs-row{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.9rem}
.spec-chip{font-family:'IBM Plex Mono',monospace;font-size:.75rem;font-weight:500;
  padding:.22rem .6rem;border-radius:4px;background:var(--go-bg);color:var(--go);white-space:nowrap}
.spec-chip.warn{background:var(--stop-bg);color:var(--stop)}
/* chart blocks */
.viz-block{display:grid;gap:1rem;margin:1rem 0 1.5rem}
.viz-legend{margin:0}
.viz-legend .lg{display:inline-flex;align-items:center;gap:.4rem;font-size:.8rem;color:var(--ink-2)}
.viz-legend i.key{display:inline-block;width:16px;height:0;border-top:2.5px solid;border-radius:2px}
.viz-legend i.s1{border-color:var(--s1)} .viz-legend i.s2{border-color:var(--s2)}
.viz-legend i.s3{border-color:var(--s3)} .viz-legend i.s4{border-color:var(--s4)}
.viz-legend i.s5{border-color:var(--s5)}
.legend-item{display:flex;align-items:center;gap:.3rem}
.viz-table summary{font-family:'IBM Plex Mono',monospace;font-size:.8rem;color:var(--go);
  cursor:pointer;margin-bottom:.5rem}
.chart .barlbl{font-family:'IBM Plex Mono',monospace;font-size:10px;font-weight:600;
  fill:var(--ink-2);font-variant-numeric:tabular-nums}
.chart .bar{stroke:none}
.chart .endlbl .nm{fill:var(--ink-2)}