/* mmrf.evemisslab.com
   The page is a boundary: what crosses it sits left, what never does sits right,
   and the wall between them is drawn, not described. */

:root {
  color-scheme: light dark;

  --paper: #f4f2ee;
  --panel: #fbfaf8;
  --ink: #171a1d;
  --ink-soft: #4a5157;
  --ink-faint: #656d74;
  --rule: #d8d4cc;
  --rule-soft: #e6e2da;

  --open: #226b64;
  --open-bg: #e2efec;
  --sealed: #9c3a32;
  --sealed-bg: #f4e4e1;
  --frozen: #7d6316;
  --frozen-bg: #f2ecd9;

  --sans: "Chivo", ui-sans-serif, system-ui, sans-serif;
  --serif: "Instrument Serif", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --measure: 34rem;
  --shell: 74rem;
}

:root[lang="zh-Hant"] {
  --sans: "Chivo", "Noto Sans TC", ui-sans-serif, system-ui, sans-serif;
  --serif: "Instrument Serif", "Noto Serif TC", Georgia, serif;
  --measure: 32rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #101418;
    --panel: #171c21;
    --ink: #e7eaed;
    --ink-soft: #b0b8bf;
    --ink-faint: #8b949c;
    --rule: #2c343b;
    --rule-soft: #222930;

    --open: #63c2b6;
    --open-bg: #14312e;
    --sealed: #e0897d;
    --sealed-bg: #341f1c;
    --frozen: #dcb44e;
    --frozen-bg: #302713;
  }
}

:root[data-theme="light"] {
  --paper: #f4f2ee;
  --panel: #fbfaf8;
  --ink: #171a1d;
  --ink-soft: #4a5157;
  --ink-faint: #656d74;
  --rule: #d8d4cc;
  --rule-soft: #e6e2da;
  --open: #226b64;
  --open-bg: #e2efec;
  --sealed: #9c3a32;
  --sealed-bg: #f4e4e1;
  --frozen: #7d6316;
  --frozen-bg: #f2ecd9;
}

:root[data-theme="dark"] {
  --paper: #101418;
  --panel: #171c21;
  --ink: #e7eaed;
  --ink-soft: #b0b8bf;
  --ink-faint: #8b949c;
  --rule: #2c343b;
  --rule-soft: #222930;
  --open: #63c2b6;
  --open-bg: #14312e;
  --sealed: #e0897d;
  --sealed-bg: #341f1c;
  --frozen: #dcb44e;
  --frozen-bg: #302713;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration-color: var(--open); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible { outline: 2px solid var(--open); outline-offset: 3px; }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 20;
  background: var(--ink); color: var(--paper); padding: .6rem 1rem;
}
.skip:focus { left: 0; }

.shell { max-width: var(--shell); margin: 0 auto; padding: 0 1.5rem; }

/* ---------------------------------------------------------------- header */

.bar {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.bar-in {
  max-width: var(--shell); margin: 0 auto; padding: .7rem 1.5rem;
  display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap;
}
.bar-mark {
  font-weight: 700; letter-spacing: .06em; text-decoration: none;
  display: inline-flex; align-items: baseline; gap: .45rem;
}
.bar-ver {
  font-family: var(--mono); font-size: .68rem; color: var(--ink-faint);
  border: 1px solid var(--rule); border-radius: 2px; padding: 0 .3rem;
}
.bar-nav { display: flex; gap: .15rem; flex-wrap: wrap; margin-right: auto; }
.bar-link {
  font-size: .82rem; text-decoration: none; color: var(--ink-soft);
  padding: .3rem .5rem; border-radius: 3px;
}
.bar-link:hover { color: var(--ink); background: var(--rule-soft); }
.bar-link[aria-current="page"] {
  color: var(--ink); font-weight: 700;
  box-shadow: inset 0 -2px 0 var(--open);
}
.bar-tools { display: flex; gap: .4rem; }
.bar-btn {
  font-family: var(--mono); font-size: .74rem; line-height: 1;
  padding: .42rem .55rem; border: 1px solid var(--rule); border-radius: 3px;
  background: transparent; color: var(--ink-soft); cursor: pointer;
  text-decoration: none;
}
.bar-btn:hover { color: var(--ink); border-color: var(--ink-faint); }

/* ----------------------------------------------------------------- masthead */

.mast { padding: 3.5rem 0 2rem; max-width: 46rem; }
.mast-eyebrow {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .16em;
  text-transform: uppercase; color: var(--ink-faint); margin: 0 0 1rem;
}
.mast-display {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(2.1rem, 5.4vw, 3.6rem); line-height: 1.08;
  letter-spacing: -.015em; margin: 0 0 1.1rem;
}
.mast-stand {
  font-size: 1.05rem; color: var(--ink-soft); margin: 0; max-width: var(--measure);
}

/* -------------------------------------------------------------- boundary */

.bd {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  border: 1px solid var(--rule);
  background: var(--panel);
  margin: 1rem 0 .75rem;
}
.bd-side { padding: 1.5rem 1.6rem; }
.bd-h {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .13em;
  text-transform: uppercase; margin: 0 0 1rem; font-weight: 500;
}
.bd-in .bd-h { color: var(--open); }
.bd-out .bd-h { color: var(--sealed); }
.bd-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .5rem; }
.bd-item {
  font-family: var(--mono); font-size: .82rem; padding: .3rem .55rem;
  border-radius: 2px;
}
.bd-in .bd-item { background: var(--open-bg); }
.bd-out .bd-item {
  background: var(--sealed-bg); text-decoration: line-through;
  text-decoration-color: var(--sealed); color: var(--ink-soft);
}
.bd-wall {
  width: 4px; background: var(--ink); position: relative;
}
.bd-wall-t {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%) rotate(90deg);
  font-family: var(--mono); font-size: .62rem; letter-spacing: .3em;
  text-transform: uppercase; color: var(--paper);
  background: var(--ink); padding: .5rem .9rem; white-space: nowrap;
}
.bd-note {
  font-size: .84rem; color: var(--ink-faint); margin: 0 0 1rem;
  max-width: var(--measure);
}

/* ------------------------------------------------------------------ body */

.body { padding-bottom: 4rem; }
.body-grid {
  display: grid; grid-template-columns: 12rem minmax(0, 1fr); gap: 3rem;
  padding-top: 2.5rem; border-top: 1px solid var(--rule);
}
.toc { position: sticky; top: 5rem; align-self: start; }
.toc-title {
  font-family: var(--mono); font-size: .66rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--ink-faint); margin: 0 0 .7rem;
  font-weight: 500;
}
.toc-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .35rem; }
.toc-link {
  font-size: .82rem; color: var(--ink-faint); text-decoration: none;
  display: block; padding-left: .65rem; border-left: 2px solid var(--rule-soft);
}
.toc-link:hover { color: var(--ink); }
.toc-link.on { color: var(--ink); border-left-color: var(--open); font-weight: 500; }

.flow > * + * { margin-top: 1.15rem; }
.flow > .h2 { margin-top: 2.9rem; }
.flow > .h2:first-child { margin-top: 0; }

.h2 {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(1.5rem, 2.9vw, 2rem); line-height: 1.18;
  letter-spacing: -.01em; margin: 0; scroll-margin-top: 5rem;
}
.p { margin: 0; max-width: var(--measure); }
.list { margin: 0; padding-left: 1.15rem; max-width: var(--measure); }
.list li + li { margin-top: .5rem; }

.ic {
  font-family: var(--mono); font-size: .86em;
  background: var(--rule-soft); padding: .08em .32em; border-radius: 2px;
  word-break: break-all;
}

/* ------------------------------------------------------------------ parts */

.kv { margin: 0; display: grid; border-top: 1px solid var(--rule); }
.kv-row {
  display: grid; grid-template-columns: 13rem minmax(0, 1fr);
  gap: 1rem; padding: .6rem 0; border-bottom: 1px solid var(--rule-soft);
}
.kv-k {
  font-family: var(--mono); font-size: .74rem; letter-spacing: .06em;
  text-transform: uppercase; color: var(--ink-faint); padding-top: .15rem;
}
.kv-v { margin: 0; min-width: 0; word-break: break-word; }

.code {
  border: 1px solid var(--rule); background: var(--panel); border-radius: 3px;
  overflow: hidden;
}
.code-tag {
  font-family: var(--mono); font-size: .64rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--ink-faint);
  padding: .4rem .8rem; border-bottom: 1px solid var(--rule-soft);
}
.code pre { margin: 0; padding: .9rem .8rem; overflow-x: auto; }
.code code { font-family: var(--mono); font-size: .82rem; line-height: 1.6; }

.tbl-wrap { overflow-x: auto; border: 1px solid var(--rule); border-radius: 3px; }
.tbl { border-collapse: collapse; width: 100%; font-size: .87rem; }
.tbl th, .tbl td {
  text-align: left; padding: .55rem .8rem;
  border-bottom: 1px solid var(--rule-soft); vertical-align: top;
}
.tbl thead th {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--ink-faint); font-weight: 500;
  background: var(--panel); white-space: nowrap;
}
.tbl tbody tr:last-child td { border-bottom: 0; }

.tag {
  font-family: var(--mono); font-size: .7rem; padding: .1rem .4rem;
  border-radius: 2px;
}
.tag-yes { background: var(--open-bg); color: var(--open); }
.tag-no { background: var(--sealed-bg); color: var(--sealed); }

.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .4rem; }
.chip {
  font-family: var(--mono); font-size: .78rem; padding: .25rem .55rem;
  border-radius: 2px; background: var(--open-bg); color: var(--open);
  border: 1px solid transparent;
}
.chip-off {
  background: transparent; color: var(--ink-faint);
  border-color: var(--rule); text-decoration: line-through;
  text-decoration-color: var(--sealed);
}

.stat4 {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  border: 1px solid var(--rule); border-radius: 3px; overflow: hidden;
}
.stat {
  padding: 1.1rem 1rem; border-right: 1px solid var(--rule-soft);
  background: var(--panel);
}
.stat:last-child { border-right: 0; }
.stat-n {
  display: block; font-family: var(--mono); font-size: 1.5rem;
  font-weight: 500; line-height: 1.1; color: var(--frozen);
}
.stat-l {
  display: block; font-size: .78rem; color: var(--ink-faint); margin-top: .4rem;
}

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); gap: .75rem; }
.card {
  display: block; padding: 1.1rem; border: 1px solid var(--rule); border-radius: 3px;
  background: var(--panel); text-decoration: none;
}
.card:hover { border-color: var(--open); }
.card-t { display: block; font-weight: 700; margin-bottom: .35rem; }
.card-d { display: block; font-size: .84rem; color: var(--ink-soft); }

.report-years { display: grid; gap: 1.4rem; }
.report-year { border-top: 1px solid var(--rule); padding-top: .8rem; }
.report-year-t, .report-month-t {
  font-family: var(--mono); font-weight: 500; letter-spacing: .08em;
  color: var(--ink-faint); margin: 0;
}
.report-year-t { font-size: .9rem; }
.report-month { margin-top: 1rem; }
.report-month-t { font-size: .72rem; margin-bottom: .55rem; }
.report-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr)); gap: .65rem; }
.report-card {
  display: grid; grid-template-columns: auto 1fr; gap: .15rem .75rem;
  padding: .85rem; border: 1px solid var(--rule); border-radius: 3px;
  background: var(--panel); text-decoration: none;
}
.report-card:hover { border-color: var(--open); }
.report-date { grid-row: span 2; display: grid; align-content: center; min-width: 3.4rem; }
.report-day { font-family: var(--mono); font-size: 1.45rem; line-height: 1; color: var(--frozen); }
.report-date-rest { font-family: var(--mono); font-size: .64rem; color: var(--ink-faint); margin-top: .3rem; }
.report-title { font-weight: 700; align-self: end; }
.report-status { font-family: var(--mono); font-size: .68rem; color: var(--ink-faint); align-self: start; }

.cite {
  margin: 0; border-left: 3px solid var(--frozen); background: var(--panel);
  padding: 1rem 1.1rem; display: grid; gap: .8rem;
}
.cite-q {
  margin: 0; font-family: var(--mono); font-size: .82rem; line-height: 1.7;
}
.cite-btn {
  justify-self: start; font-family: var(--mono); font-size: .72rem;
  padding: .35rem .7rem; border: 1px solid var(--rule); border-radius: 3px;
  background: var(--paper); color: var(--ink-soft); cursor: pointer;
}
.cite-btn:hover { color: var(--ink); border-color: var(--ink-faint); }

.bars { margin: 0; border: 1px solid var(--rule); border-radius: 3px; padding: 1.1rem; background: var(--panel); }
.bar-title {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--ink-faint); margin-bottom: .9rem;
}
.bar-set { display: grid; gap: .35rem; }
.bar-row {
  display: grid; grid-template-columns: 7.5rem minmax(0, 1fr) 4.5rem;
  gap: .7rem; align-items: center;
}
.bar-l { font-family: var(--mono); font-size: .76rem; color: var(--ink-soft); }
.bar-track { height: .7rem; background: var(--rule-soft); border-radius: 1px; }
.bar-fill { display: block; height: 100%; background: var(--open); border-radius: 1px; }
.bar-v { font-family: var(--mono); font-size: .76rem; text-align: right; }
.bar-note {
  font-size: .82rem; color: var(--ink-faint); margin: .9rem 0 0;
  padding-top: .8rem; border-top: 1px solid var(--rule-soft);
}

.note {
  border-left: 3px solid var(--frozen); background: var(--frozen-bg);
  padding: .9rem 1.1rem;
}
.note p { margin: 0; font-size: .88rem; max-width: var(--measure); }

.gate { display: grid; border: 1px solid var(--rule); border-radius: 3px; overflow: hidden; }
.gate-row {
  display: flex; justify-content: space-between; gap: 1rem; align-items: center;
  padding: .5rem .8rem; border-bottom: 1px solid var(--rule-soft);
  background: var(--panel);
}
.gate-row:last-child { border-bottom: 0; }
.gate-k { font-family: var(--mono); font-size: .78rem; }
.gate-v { font-family: var(--mono); font-size: .74rem; font-weight: 600; }
.gate-row[data-on="false"] .gate-v { color: var(--open); }
.gate-row[data-on="true"] .gate-v { color: var(--sealed); }
.gate-row[data-on="class"] .gate-v { color: var(--frozen); }

.chain { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; counter-reset: c; }
.chain-step {
  display: grid; grid-template-columns: 2rem 9rem minmax(0, 1fr);
  gap: 1rem; align-items: baseline;
  padding: .7rem 0; border-bottom: 1px solid var(--rule-soft);
}
.chain-step:last-child { border-bottom: 0; }
.chain-n {
  font-family: var(--mono); font-size: .74rem; color: var(--paper);
  background: var(--ink); width: 1.4rem; height: 1.4rem; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
}
.chain-t { font-weight: 700; }
.chain-d { color: var(--ink-soft); font-size: .88rem; }

.revs { display: grid; gap: .75rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.rev { border: 1px solid var(--rule); border-radius: 3px; padding: .9rem 1rem; background: var(--panel); }
.rev-head { display: flex; justify-content: space-between; gap: .6rem; align-items: center; margin-bottom: .6rem; }
.rev-who { font-family: var(--mono); font-size: .78rem; }
.rev-dec {
  font-family: var(--mono); font-size: .68rem; padding: .1rem .4rem;
  border-radius: 2px; background: var(--open-bg); color: var(--open);
}
.rev-find { margin: 0 0 .7rem; padding-left: 1.1rem; font-size: .84rem; color: var(--ink-soft); }
.rev-find li + li { margin-top: .3rem; }
.rev-h { font-family: var(--mono); font-size: .7rem; color: var(--ink-faint); word-break: break-all; }

.split { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: .75rem; }
.split-col { border: 1px solid var(--rule); border-radius: 3px; background: var(--panel); overflow: hidden; }
.split-bad { border-color: var(--sealed); }
.split-tag {
  font-family: var(--mono); font-size: .64rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--ink-faint);
  padding: .4rem .8rem; border-bottom: 1px solid var(--rule-soft);
}
.split-col pre { margin: 0; padding: .8rem; overflow-x: auto; }
.split-col code { font-family: var(--mono); font-size: .76rem; line-height: 1.55; }
.split-foot {
  display: flex; gap: 1.5rem; font-family: var(--mono); font-size: .74rem;
  color: var(--ink-faint); margin-top: .5rem;
}

.prov {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  border: 1px solid var(--rule); border-radius: 3px; overflow: hidden;
}
.prov-cell {
  padding: .7rem .9rem; background: var(--panel);
  border-right: 1px solid var(--rule-soft);
}
.prov-cell:last-child { border-right: 0; }
.prov-k {
  display: block; font-family: var(--mono); font-size: .64rem;
  letter-spacing: .12em; text-transform: uppercase; color: var(--ink-faint);
  margin-bottom: .3rem;
}
.prov-v { font-family: var(--mono); font-size: .74rem; word-break: break-all; }

/* ---------------------------------------------------------------- footer */

.foot { border-top: 1px solid var(--rule); padding: 2rem 0 3rem; }
.foot-grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2rem; align-items: start; }
.foot-note { margin: 0; font-size: .84rem; color: var(--ink-soft); max-width: 30rem; }
.foot-meta { display: grid; gap: .3rem; text-align: right; }
.foot-line { font-family: var(--mono); font-size: .72rem; color: var(--ink-faint); }

.gone { padding: 5rem 0 6rem; }

/* --------------------------------------------------------------- narrow */

@media (max-width: 62rem) {
  .body-grid { grid-template-columns: minmax(0, 1fr); gap: 1.75rem; }
  .toc { position: static; }
  .toc-list { display: flex; flex-wrap: wrap; gap: .5rem; }
  .toc-link { border-left: 0; padding-left: 0; }
  .toc-link + .toc-link { border-left: 0; }
}

@media (max-width: 48rem) {
  .bd { grid-template-columns: minmax(0, 1fr); }
  .bd-wall { width: auto; height: 4px; }
  .bd-wall-t { transform: translate(-50%, -50%); }
  .kv-row { grid-template-columns: minmax(0, 1fr); gap: .2rem; }
  .chain-step { grid-template-columns: 2rem minmax(0, 1fr); }
  .chain-d { grid-column: 2; }
  .bar-row { grid-template-columns: 5.5rem minmax(0, 1fr) 3.8rem; }
  .foot-grid { grid-template-columns: minmax(0, 1fr); }
  .foot-meta { text-align: left; }
  .bar-nav { order: 3; width: 100%; }
  .bar-tools { margin-left: auto; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}