/* Blackgold Bin — "log book" sheet.
 *
 * One stylesheet, hand-written for this site only. The visual hand is a ruled
 * laboratory log sheet: kraft graph paper behind squared-off plates, monospace
 * for every number, no rounded corners anywhere, no shadows, flat fills only.
 * The four variable families named in the deployment spec are declared first
 * and are the only place the palette is written down.
 */

/* ---------------------------------------------------------------- vars --- */
:root {
  /* C:N accounting */
  --cnratio-carbon: #4A3B2A;
  --cnratio-carbon-soft: #7A6349;
  --cnratio-nitrogen: #6E8B3D;
  --cnratio-nitrogen-soft: #8FA859;
  --cnratio-balancer: #D2703A;
  --cnratio-target: #A9501F;
  --cnratio-track: #D6C9B0;

  /* temperature */
  --thermo-ambient: #7E93A6;
  --thermo-meso: #D6C9B0;
  --thermo-band: #E39A6B;
  --thermo-line: #D2703A;
  --thermo-peak: #A9501F;
  --thermo-core: #B85C2B;

  /* feedstock roles */
  --feedstock-brown: #7A6349;
  --feedstock-green: #6E8B3D;
  --feedstock-balancer: #D2703A;
  --feedstock-ink: #241C14;

  /* cure stages */
  --cure-raw: #F4EEE2;
  --cure-core: #E39A6B;
  --cure-finish: #7A6349;
  --cure-rest: #D6C9B0;

  /* sheet */
  --kraft: #E8DFCE;
  --kraft-light: #F4EEE2;
  --kraft-deep: #D6C9B0;
  --paper: #FBF8F1;
  --ink: #241C14;
  --ink-soft: #4A3B2A;
  --ink-faint: #7A6A57;
  --rule: #C9B99E;

  --mono: "IBM Plex Mono", "DejaVu Sans Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;

  --sheet-w: 1180px;
  --gutter: 22px;
}

/* ---------------------------------------------------------------- base --- */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.62;
  color: var(--ink);
  background-color: var(--kraft);
  background-image:
    linear-gradient(to right, rgba(201, 185, 158, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(201, 185, 158, 0.55) 1px, transparent 1px);
  background-size: 24px 24px;
}

body.lang-zh {
  font-size: 16.5px;
  line-height: 1.85;
  word-break: break-word;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--cnratio-target); text-decoration: none; border-bottom: 1px solid rgba(169, 80, 31, 0.4); }
a:hover { border-bottom-color: var(--cnratio-target); background: rgba(210, 112, 58, 0.08); }

h1, h2, h3 { font-family: var(--mono); font-weight: 600; line-height: 1.24; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.mono, .num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.num { text-align: right; }

.skiplink {
  position: absolute; left: -9999px; top: 0; z-index: 80;
  background: var(--ink); color: var(--paper); padding: 10px 16px; border-bottom: 0;
}
.skiplink:focus { left: 8px; top: 8px; }

/* -------------------------------------------------------------- header --- */
.benchhead { background: var(--ink-soft); border-bottom: 6px solid var(--cnratio-target); }

.benchhead-in {
  max-width: var(--sheet-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 12px var(--gutter);
  flex-wrap: wrap;
}

.benchmark { display: flex; align-items: center; gap: 12px; border-bottom: 0; color: var(--kraft-light); }
.benchmark:hover { background: none; }
.benchmark-mark { display: block; border: 1px solid var(--kraft-deep); }
.benchmark-word { font-family: var(--mono); font-size: 19px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; }
.benchmark-sub { display: block; font-size: 11px; letter-spacing: 0.08em; color: var(--kraft-deep); text-transform: none; }

.railbar { display: flex; flex-wrap: wrap; gap: 2px; margin-left: auto; }
.railbar-item {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--kraft);
  padding: 7px 11px;
  border: 1px solid transparent;
  border-bottom: 1px solid transparent;
}
.railbar-item:hover { background: rgba(244, 238, 226, 0.12); border-color: var(--kraft-deep); }
.railbar-item.is-current { background: var(--kraft-light); color: var(--ink); border-color: var(--kraft-light); }
.railbar-count { display: inline-block; margin-left: 6px; color: var(--cnratio-target); }
.railbar-item.is-current .railbar-count { color: var(--cnratio-target); }

.langpin {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink);
  background: var(--kraft);
  padding: 7px 12px;
  border: 1px solid var(--kraft-deep);
}
.langpin:hover { background: var(--cnratio-target); color: var(--paper); border-color: var(--cnratio-target); }

/* On wide screens the sticky rail does this job; on narrow ones the rail
   collapses to a list at the top of the sheet and the progress bar takes over. */
.railprog { display: none; height: 4px; background: var(--kraft-deep); }
.railprog-fill { display: block; height: 4px; width: 0; background: var(--cnratio-target); transition: width 0.12s linear; }
@media (max-width: 1040px) { .railprog { display: block; } }

/* -------------------------------------------------------------- layout --- */
.ledger { max-width: var(--sheet-w); margin: 0 auto; padding: 30px var(--gutter) 60px; }

.ledger-intro { border-left: 6px solid var(--cnratio-carbon); padding: 4px 0 4px 18px; margin-bottom: 34px; }
.ledger-kicker { font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-faint); margin: 0 0 8px; }
.ledger-title { font-size: clamp(28px, 4.4vw, 46px); margin: 0 0 14px; }
.ledger-lede { font-size: 18px; max-width: 74ch; color: var(--ink-soft); margin: 0; }
body.lang-zh .ledger-lede { font-size: 17px; }

.datumstrip { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); margin: 22px 0 0; }
.datum { background: var(--paper); padding: 12px 14px; }
.datum-label { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); }
.datum-value { margin: 4px 0 0; font-family: var(--mono); font-size: 24px; font-weight: 600; }
.datum-note { display: block; font-family: var(--sans); font-size: 12px; font-weight: 400; color: var(--ink-faint); line-height: 1.4; margin-top: 2px; }

.colplate { border-top: 3px solid var(--cnratio-carbon); padding-top: 10px; margin-bottom: 16px; }
.colplate-title { font-size: 19px; margin: 0 0 6px; letter-spacing: 0.01em; }
.colplate-note { font-size: 14px; color: var(--ink-faint); margin: 0; }

/* ---------------------------------------------------------- calculator --- */
.calcstrip {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-top: 6px solid var(--cnratio-carbon);
  padding: 20px 22px 22px;
  margin-bottom: 40px;
}

.calcgrid { display: block; }
.calcgrid-head,
.calcrow { display: grid; grid-template-columns: 2.1fr 0.8fr 0.8fr 0.9fr 1fr 44px; gap: 8px; align-items: center; }
.calcgrid-head { font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); padding-bottom: 6px; border-bottom: 1px solid var(--rule); }
.calcrow { padding: 6px 0; border-bottom: 1px dotted var(--rule); }

.calcfield {
  width: 100%;
  font-family: var(--sans);
  font-size: 15px;
  color: var(--ink);
  background: var(--kraft-light);
  border: 1px solid var(--rule);
  border-radius: 0;
  padding: 8px 9px;
}
.calcfield.mono { font-family: var(--mono); }
.calcfield:focus { outline: 2px solid var(--cnratio-target); outline-offset: 0; background: #fff; }

.calcbtn {
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1;
  color: var(--ink-soft);
  background: var(--kraft);
  border: 1px solid var(--rule);
  border-radius: 0;
  padding: 9px 12px;
  cursor: pointer;
}
.calcbtn:hover { background: var(--cnratio-carbon); color: var(--kraft-light); }
.calcbtn--add { font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase; padding: 10px 14px; }

.calcgrid-foot { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; padding-top: 14px; }
.calcgrid-hint { font-size: 12px; color: var(--ink-faint); margin: 0; }

.calcout { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); margin-top: 18px; }
.calcout-row { background: var(--kraft-light); padding: 14px 16px; }
.calcout-label { font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); margin: 0; }
.calcout-value { font-size: 30px; font-weight: 600; margin: 6px 0 4px; }
.calcout-note { font-size: 13px; color: var(--ink-faint); margin: 0; }

.calcout-scale { grid-column: 1 / -1; background: var(--kraft-light); padding: 10px 16px 14px; display: grid; gap: 8px; }
.calcout-scale-band { display: block; height: 14px; background: var(--cnratio-track); position: relative; }
.calcout-scale-band::before {
  content: "";
  display: block;
  height: 100%;
  width: calc(var(--fill, 0) * 1%);
  background: var(--fill-colour, var(--cnratio-carbon));
}
.calcout-scale-band::after {
  content: "";
  position: absolute;
  top: -3px;
  bottom: -3px;
  left: calc(var(--fill, 0) * 1%);
  border-left: 3px solid var(--ink);
}

.calcout-verdict { grid-column: 1 / -1; background: var(--ink-soft); color: var(--kraft-light); font-size: 15px; margin: 0; padding: 14px 16px; }

/* --------------------------------------------------------------- board --- */
.board { display: grid; grid-template-columns: 1.25fr 1fr 1fr; gap: 26px; margin-bottom: 46px; }
.board-col { min-width: 0; }
.board-more { font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; margin: 14px 0 0; }

/* bin card */
.bincard { background: var(--paper); border: 1px solid var(--rule); border-left: 5px solid var(--cnratio-carbon); padding: 14px 16px 12px; margin-bottom: 16px; }
.bincard-bin { display: flex; align-items: center; gap: 10px; font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); margin: 0 0 6px; }
.bincard-title { font-size: 17px; margin: 0 0 10px; }
.bincard-curve { border: 1px solid var(--rule); background: #fff; margin-bottom: 10px; }
.bincard-meta { font-size: 12px; color: var(--ink-faint); margin: 8px 0 0; }

.statechip { font-family: var(--mono); font-size: 10px; letter-spacing: 0.1em; padding: 2px 7px; border: 1px solid; }
.statechip--running { color: var(--cnratio-target); border-color: var(--cnratio-target); background: rgba(210, 112, 58, 0.12); }
.statechip--curing { color: var(--cnratio-nitrogen); border-color: var(--cnratio-nitrogen); background: rgba(110, 139, 61, 0.12); }
.statechip--cured { color: var(--ink-faint); border-color: var(--rule); background: var(--kraft-light); }

.stratumstrip { display: flex; height: 14px; border: 1px solid var(--rule); margin-bottom: 10px; }
.stratum { display: block; height: 100%; }
.stratum--raw { background: var(--cure-raw); background-image: repeating-linear-gradient(28deg, var(--cnratio-nitrogen-soft) 0 2px, transparent 2px 7px); }
.stratum--core { background: var(--cure-core); background-image: repeating-linear-gradient(90deg, var(--thermo-core) 0 2px, transparent 2px 6px); }
.stratum--cure { background: var(--cure-finish); background-image: repeating-linear-gradient(0deg, var(--ink-soft) 0 1px, transparent 1px 5px); }

.dataticks { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--rule); border: 1px solid var(--rule); margin: 0; }
.datatick { background: var(--kraft-light); padding: 6px 8px; }
.datatick dt { font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); }
.datatick dd { margin: 2px 0 0; font-size: 14px; font-weight: 600; }

/* fault list */
.faultlist { border-top: 1px solid var(--rule); }
.faultrow { border-bottom: 1px solid var(--rule); }
.faultrow-link { display: block; padding: 10px 4px; border-bottom: 0; color: var(--ink); }
.faultrow-link:hover { background: rgba(210, 112, 58, 0.08); }
.faultrow-title { display: block; font-family: var(--mono); font-size: 14px; font-weight: 600; }
.faultrow-symptom { display: block; font-size: 13px; color: var(--ink-soft); margin-top: 3px; }
.faultlist--inline { margin-top: 6px; }

.embertag { display: inline-block; margin-top: 6px; font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em; color: var(--cnratio-target); border-left: 3px solid var(--cnratio-target); padding-left: 7px; }

/* method list */
.methodlist { border-top: 1px solid var(--rule); counter-reset: method; }
.methodrow { display: flex; gap: 10px; align-items: baseline; border-bottom: 1px solid var(--rule); padding: 10px 4px; }
.methodrow-num { font-size: 12px; color: var(--cnratio-target); }
.methodrow-body { border-bottom: 0; color: var(--ink); }
.methodrow-title { display: block; font-size: 15px; font-weight: 600; }
.methodrow-meta { display: block; font-size: 12px; color: var(--ink-faint); margin-top: 3px; }

/* ------------------------------------------------------- index / cards --- */
.indexgroup { margin-bottom: 42px; }
.indexgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 20px; }

.indexcard { background: var(--paper); border: 1px solid var(--rule); border-top: 4px solid var(--cnratio-carbon); padding: 16px 17px 14px; display: flex; flex-direction: column; }
.indexcard--method { border-top-color: var(--cnratio-nitrogen); }
.indexcard--feedstock { border-top-color: var(--cnratio-balancer); }
.indexcard-kind { font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-faint); margin: 0 0 8px; }
.indexcard-title { font-size: 18px; margin: 0 0 8px; }
.indexcard-dek { font-size: 14.5px; color: var(--ink-soft); margin: 0 0 12px; }
.indexcard-art { border: 1px solid var(--rule); background: #fff; margin-bottom: 10px; }
.indexcard-meta { font-size: 12px; color: var(--ink-faint); margin: 10px 0 0; }

.chiprail { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 18px; }
.chip { display: inline-block; font-family: var(--mono); font-size: 12px; padding: 5px 10px; border: 1px solid var(--rule); background: var(--paper); color: var(--ink-soft); border-bottom: 1px solid var(--rule); }
.chip:hover { background: var(--cnratio-carbon); color: var(--kraft-light); }
.chip.is-current { background: var(--cnratio-carbon); color: var(--kraft-light); border-color: var(--cnratio-carbon); }
/* a tag carried by a single entry, so it has no page of its own to link to */
.chip--bare { border-style: dashed; color: var(--ink-faint); background: transparent; }
.chip-count { margin-left: 6px; color: var(--cnratio-target); }
.chip.is-current .chip-count { color: var(--thermo-band); }

/* ----------------------------------------------------------- log table --- */
.tablescroll { overflow-x: auto; border: 1px solid var(--rule); background: var(--paper); }
.logtable { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.logtable-cap { caption-side: top; text-align: left; font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); padding: 8px 10px; border-bottom: 1px solid var(--rule); }
.logtable th, .logtable td { padding: 8px 10px; border-bottom: 1px solid var(--rule); text-align: left; vertical-align: top; }
.logtable thead th { font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-faint); background: var(--kraft-light); white-space: nowrap; }
.logtable tbody th { font-weight: 600; }
.logtable tbody tr:nth-child(even) { background: rgba(232, 223, 206, 0.4); }
.logtable tfoot th, .logtable tfoot td { background: var(--kraft); font-weight: 600; border-bottom: 0; }
.logtable--feedstock tbody th { width: 34%; }
.feednote { display: block; font-family: var(--sans); font-size: 12.5px; font-weight: 400; color: var(--ink-faint); margin-top: 3px; }

.feedtag { font-family: var(--mono); font-size: 11px; padding: 2px 7px; border: 1px solid; }
.feedtag--brown { color: var(--feedstock-brown); border-color: var(--feedstock-brown); }
.feedtag--green { color: var(--feedstock-green); border-color: var(--feedstock-green); }
.feedtag--balancer { color: var(--feedstock-balancer); border-color: var(--feedstock-balancer); }

/* The blended C:N on a log scale from 10:1 to 120:1 — the range the number is
   actually discussed over. The shaded strip is the 25-35:1 working band, the
   fill runs flat from the left to the value, and the marker sits on the value. */
.cnbar { height: 24px; background: var(--cnratio-track); border: 1px solid var(--rule); margin-top: 14px; position: relative; }
.cnbar-band { position: absolute; top: 0; bottom: 0; background: rgba(110, 139, 61, 0.3); border-left: 1px solid var(--cnratio-nitrogen); border-right: 1px solid var(--cnratio-nitrogen); }
.cnbar-fill { position: absolute; top: 0; bottom: 0; left: 0; background: var(--cnratio-carbon); }
.cnbar-marker { position: absolute; top: -5px; bottom: -5px; width: 3px; background: var(--ink); }
.cnbar-tick { position: absolute; top: 26px; font-size: 10px; color: var(--ink-faint); }
.cnbar-tick--lo { left: 0; }
.cnbar-tick--hi { right: 0; }
.cnbar-value { position: absolute; top: 1px; right: 6px; font-size: 13px; font-weight: 600; color: var(--kraft-light); }
.cnbar-note { font-size: 12px; color: var(--ink-faint); margin: 10px 0 0; }
.cnbar + .cnbar-note { margin-top: 26px; } /* clears the scale ticks under the bar */

/* ------------------------------------------------------------ log book --- */
.sheetgrid { display: grid; grid-template-columns: minmax(0, 1fr) 268px; gap: 34px; align-items: start; }
.logbook { min-width: 0; }

.logbook-head { border-left: 6px solid var(--cnratio-carbon); padding: 2px 0 2px 18px; margin-bottom: 32px; }
.logbook-kicker { font-size: 11.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-faint); margin: 0 0 8px; }
.logbook-title { font-size: clamp(26px, 3.6vw, 40px); margin: 0 0 12px; }
.logbook-dek { font-size: 18px; color: var(--ink-soft); margin: 0 0 12px; max-width: 70ch; }
.logbook-byline { font-size: 12px; color: var(--ink-faint); margin: 0; }

.sheetblock { margin-bottom: 38px; scroll-margin-top: 90px; }
.strathdr { display: flex; align-items: baseline; gap: 12px; font-size: 21px; margin: 0 0 14px; padding-bottom: 8px; border-bottom: 2px solid var(--rule); }
.anchor-num { font-size: 12px; color: var(--cnratio-target); letter-spacing: 0.08em; }

.prose { max-width: 74ch; }
.prose p { margin: 0 0 1.05em; }
.prose p:last-child { margin-bottom: 0; }

.factgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); margin-bottom: 18px; }
.factcell { background: var(--paper); padding: 11px 13px; }
.factcell-label { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); }
.factcell-value { margin: 5px 0 0; font-size: 14.5px; }

.curestack { display: grid; gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.curestack-row { display: flex; gap: 12px; align-items: baseline; background: var(--paper); padding: 9px 13px; border-left: 5px solid; }
.curestack-row--raw { border-left-color: var(--cure-raw); }
.curestack-row--core { border-left-color: var(--cure-core); }
.curestack-row--cure { border-left-color: var(--cure-finish); }
.curestack-row--rest { border-left-color: var(--cure-rest); }
.curestack-name { font-family: var(--mono); font-size: 13px; font-weight: 600; min-width: 120px; }
.curestack-note { font-size: 13.5px; color: var(--ink-soft); }

.turnclock { border-top: 1px solid var(--rule); }
.turnclock-row { display: flex; gap: 14px; padding: 11px 0; border-bottom: 1px solid var(--rule); }
.turnclock-row.is-done { background: rgba(232, 223, 206, 0.35); }
.turnclock-day { flex: 0 0 78px; font-size: 12px; color: var(--cnratio-target); letter-spacing: 0.04em; }
.turnclock-body { display: block; min-width: 0; }
.turnclock-action { display: block; font-size: 15.5px; }
a.turnclock-action { border-bottom: 0; color: var(--ink); }
a.turnclock-action:hover { color: var(--cnratio-target); }
.turnclock-meta { display: block; font-size: 12px; color: var(--ink-faint); margin-top: 4px; }
.turnclock-note { display: block; font-size: 13.5px; color: var(--ink-soft); margin-top: 5px; }
.turnclock--rows .turnclock-row { padding: 13px 0; }

.curvefig { margin: 0 0 16px; border: 1px solid var(--rule); background: var(--paper); padding: 12px; }
.curvefig-img { width: 100%; border: 1px solid var(--rule); background: #fff; }
.curvefig-cap { font-size: 13px; color: var(--ink-faint); margin-top: 10px; }

/* bin cross-section plate, drawn to the container this batch ran in */
.sectionfig { margin: 22px 0 0; border: 1px solid var(--rule); border-top: 4px solid var(--cnratio-carbon); background: var(--paper); padding: 12px; }
.sectionfig-head { font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-faint); margin: 0 0 8px; }
.sectionfig-img { width: 100%; display: block; border: 1px solid var(--rule); background: var(--kraft-light); }
.sectionfig-cap { font-size: 13px; color: var(--ink-faint); margin: 10px 0 0; }

.thermoband { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.thermoband-cell { padding: 10px 12px; border-top: 5px solid; }
.thermoband-cell--ambient { background: rgba(126, 147, 166, 0.16); border-top-color: var(--thermo-ambient); }
.thermoband-cell--meso { background: rgba(214, 201, 176, 0.5); border-top-color: var(--thermo-meso); }
.thermoband-cell--band { background: rgba(227, 154, 107, 0.26); border-top-color: var(--thermo-band); }
.thermoband-cell--peak { background: rgba(185, 92, 43, 0.22); border-top-color: var(--thermo-core); }
.thermoband-range { display: block; font-size: 15px; font-weight: 600; }
.thermoband-name { display: block; font-size: 12.5px; color: var(--ink-soft); margin-top: 3px; }

.smellnote { border-left: 5px solid var(--cnratio-balancer); background: var(--paper); padding: 13px 16px; margin-top: 18px; }
.smellnote-head { font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); margin: 0 0 6px; }
.smellnote-body { margin: 0; font-size: 15.5px; }

.faqlist { border-top: 1px solid var(--rule); }
.faqrow { padding: 14px 0; border-bottom: 1px solid var(--rule); }
.faqrow-q { font-family: var(--mono); font-size: 15px; font-weight: 600; margin: 0 0 6px; }
.faqrow-a { margin: 0; font-size: 15.5px; color: var(--ink-soft); max-width: 74ch; }

.relrail { border-top: 1px solid var(--rule); }
.relrail-row { border-bottom: 1px solid var(--rule); }
.relrail-row a { display: grid; grid-template-columns: 92px 1fr; gap: 4px 12px; align-items: baseline; padding: 11px 4px; border-bottom: 0; color: var(--ink); }
.relrail-row a:hover { background: rgba(110, 139, 61, 0.1); }
.relrail-kind { font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--cnratio-nitrogen); }
.relrail-title { font-weight: 600; }
.relrail-meta { grid-column: 2; font-size: 12px; color: var(--ink-faint); }

.sheetfoot { border-top: 3px solid var(--cnratio-carbon); padding-top: 12px; margin-top: 30px; }
.sheetfoot-line { font-size: 13px; color: var(--ink-faint); margin: 0 0 4px; }

/* fault page */
.faultsymptom { font-size: 18px; border-left: 5px solid var(--cnratio-target); padding-left: 14px; margin: 0 0 14px; }
.faultsigns { display: flex; flex-wrap: wrap; gap: 6px; }
.faultsign { font-size: 12px; padding: 4px 9px; border: 1px dashed var(--rule); color: var(--ink-soft); background: var(--paper); }

/* --------------------------------------------------------------- aside --- */
.railtoc { position: sticky; top: 18px; background: var(--paper); border: 1px solid var(--rule); border-top: 4px solid var(--cnratio-carbon); padding: 14px 15px; }
.railtoc-head { font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-faint); margin: 0 0 10px; }
.railtoc-item a { display: flex; gap: 8px; align-items: baseline; padding: 6px 0; border-bottom: 1px dotted var(--rule); font-size: 13.5px; color: var(--ink-soft); }
.railtoc-item:last-child a { border-bottom: 0; }
.railtoc-item a:hover { background: none; color: var(--cnratio-target); }
.railtoc-num { font-size: 11px; color: var(--ink-faint); }
.railtoc-item.is-current a { color: var(--cnratio-target); font-weight: 600; }
.railtoc-item.is-current .railtoc-num { color: var(--cnratio-target); }
.railtoc-foot { font-size: 11px; color: var(--ink-faint); margin: 12px 0 0; border-top: 1px solid var(--rule); padding-top: 9px; }

/* ------------------------------------------------------------- sections --- */
.latest, .logindex, .readme { margin-bottom: 44px; }
.readme-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(240px, 1fr); gap: 30px; align-items: start; }
.readme-side { display: grid; gap: 16px; }
.tempscale { border: 1px solid var(--rule); background: var(--paper); }

.lostpage { border-left: 6px solid var(--cnratio-target); padding-left: 18px; }
.lostpage-code { font-size: 60px; color: var(--cnratio-target); margin: 4px 0 18px; }

/* --------------------------------------------------------------- footer --- */
.footerplate { background: var(--ink-soft); color: var(--kraft); border-top: 6px solid var(--cnratio-target); margin-top: 40px; }
.footerplate-in { max-width: var(--sheet-w); margin: 0 auto; padding: 28px var(--gutter) 18px; display: grid; grid-template-columns: 1.6fr repeat(3, minmax(120px, 1fr)); gap: 26px; }
.footerplate-brand { font-family: var(--mono); font-size: 18px; letter-spacing: 0.08em; text-transform: uppercase; margin: 0 0 8px; }
.footerplate-line { font-size: 13.5px; color: var(--kraft-deep); margin: 0 0 6px; max-width: 40ch; }
.footerplate-line a { color: var(--kraft-light); border-bottom-color: rgba(244, 238, 226, 0.4); }
.footerplate-line a:hover { background: rgba(244, 238, 226, 0.12); }
.footrail-head { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--kraft-deep); margin: 0 0 8px; }
.footrail-list li { margin-bottom: 5px; }
.footrail-list a { font-size: 13.5px; color: var(--kraft-light); border-bottom: 0; }
.footrail-list a:hover { background: none; color: var(--thermo-band); }
.footerplate-fine { max-width: var(--sheet-w); margin: 0 auto; padding: 0 var(--gutter) 26px; font-size: 12px; color: var(--kraft-deep); border-top: 1px solid rgba(214, 201, 176, 0.35); padding-top: 12px; }
/* Editorial disclaimer: the line above the fine print, same measure, no rule of its own. */
.footerplate-editorial { max-width: var(--sheet-w); margin: 0 auto; padding: 12px var(--gutter) 0; font-size: 12px; color: var(--kraft-deep); border-top: 1px solid rgba(214, 201, 176, 0.35); }
.footerplate-editorial + .footerplate-fine { border-top: 0; padding-top: 6px; }

/* ------------------------------------------------------------ responsive --- */
@media (max-width: 1040px) {
  .board { grid-template-columns: 1fr 1fr; }
  .board-col--bench { grid-column: 1 / -1; }
  .sheetgrid { grid-template-columns: minmax(0, 1fr); }
  .railtoc { position: static; order: -1; }
  .readme-grid { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .board { grid-template-columns: 1fr; }
  .calcgrid-head { display: none; }
  .calcrow { grid-template-columns: 1fr 1fr; grid-template-areas: "mat mat" "kg cn" "mo role" "drop drop"; gap: 6px; padding: 10px 0; }
  .calcrow > *:nth-child(1) { grid-area: mat; }
  .calcrow > *:nth-child(2) { grid-area: kg; }
  .calcrow > *:nth-child(3) { grid-area: cn; }
  .calcrow > *:nth-child(4) { grid-area: mo; }
  .calcrow > *:nth-child(5) { grid-area: role; }
  .calcrow > *:nth-child(6) { grid-area: drop; justify-self: end; }
  .footerplate-in { grid-template-columns: 1fr 1fr; }
  .datum-value { font-size: 21px; }
  .benchhead-in { gap: 10px; }
  .railbar { margin-left: 0; width: 100%; }
  .relrail-row a { grid-template-columns: 1fr; }
  .relrail-meta { grid-column: 1; }
}

@media print {
  body { background: #fff; }
  .benchhead, .railtoc, .footerplate, .calcstrip { display: none; }
}