/* Synthetic Players — dense research-ledger styling. No external assets. */
:root {
  --bg: #faf9f6;
  --bg-alt: #f1efe9;
  --ink: #1a1915;
  --ink-soft: #4c483f;
  --ink-faint: #7a7466;
  --rule: #d9d4c8;
  --accent: #7a1f1f;
  --accent-ink: #7a1f1f;
  --link: #14405c;
  --chip-pass-bg: #e2efe2; --chip-pass-ink: #1e5b2a;
  --chip-fail-bg: #f6e0e0; --chip-fail-ink: #8c1f1f;
  --chip-mixed-bg: #f8ecd4; --chip-mixed-ink: #7a5410;
  --chip-target-bg: #e3e9f5; --chip-target-ink: #2c4a86;
  --chip-desc-bg: #eae7df; --chip-desc-ink: #565040;
  --chip-proc-bg: #e8e2f0; --chip-proc-ink: #4d3a72;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14130f;
    --bg-alt: #1c1a15;
    --ink: #e8e4da;
    --ink-soft: #b5afa0;
    --ink-faint: #857e6e;
    --rule: #37342b;
    --accent: #d98282;
    --accent-ink: #d98282;
    --link: #8fb8d4;
    --chip-pass-bg: #1e3320; --chip-pass-ink: #9fd3a8;
    --chip-fail-bg: #3d1d1d; --chip-fail-ink: #e2a0a0;
    --chip-mixed-bg: #3a2f16; --chip-mixed-ink: #e0c07a;
    --chip-target-bg: #1e2a44; --chip-target-ink: #a3bce8;
    --chip-desc-bg: #29271f; --chip-desc-ink: #b3ac9a;
    --chip-proc-bg: #291f38; --chip-proc-ink: #bfa8e2;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: var(--serif); font-size: 16px; line-height: 1.5;
}
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent-ink); }
code, .mono { font-family: var(--mono); font-size: 0.86em; }
.wrap { max-width: 60rem; margin: 0 auto; padding: 0 1.1rem; }

/* Masthead */
.masthead { border-bottom: 2px solid var(--ink); background: var(--bg); }
.mast-inner {
  max-width: 60rem; margin: 0 auto; padding: 0.55rem 1.1rem;
  display: flex; align-items: baseline; gap: 1rem; flex-wrap: wrap;
}
.wordmark {
  font-family: var(--serif); font-weight: 700; font-size: 1.05rem;
  color: var(--ink); text-decoration: none; letter-spacing: 0.01em;
}
.mainnav { display: flex; gap: 0.75rem; flex-wrap: wrap; font-family: var(--sans); font-size: 0.8rem; }
.mainnav a { color: var(--ink-soft); text-decoration: none; padding: 0.1rem 0; border-bottom: 2px solid transparent; }
.mainnav a:hover { color: var(--ink); }
.mainnav a.here { color: var(--ink); border-bottom-color: var(--accent); }
.mast-actions { margin-left: auto; }
.pdfbtn {
  font-family: var(--sans); font-size: 0.78rem; font-weight: 600;
  color: var(--bg); background: var(--ink); text-decoration: none;
  padding: 0.28rem 0.6rem; border-radius: 3px; white-space: nowrap;
}
.pdfbtn:hover { background: var(--accent); color: var(--bg); }

/* Item pages */
.item { padding: 1.6rem 0 2.5rem; }
.kicker {
  font-family: var(--sans); font-size: 0.72rem; text-transform: uppercase;
  letter-spacing: 0.12em; color: var(--ink-faint); margin: 0 0 0.35rem;
  display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap;
}
h1 { font-size: 1.6rem; line-height: 1.2; margin: 0 0 0.4rem; letter-spacing: -0.01em; }
.dek { font-size: 1.02rem; color: var(--ink-soft); margin: 0 0 0.6rem; font-style: italic; }
.item-meta { font-family: var(--sans); font-size: 0.8rem; color: var(--ink-faint); margin: 0 0 0.5rem; }
.item-meta code { font-size: 0.95em; }
.ext-row { display: flex; gap: 0.5rem; flex-wrap: wrap; margin: 0.4rem 0 0.8rem; }
.ext {
  font-family: var(--sans); font-size: 0.75rem; font-weight: 600;
  border: 1px solid var(--rule); border-radius: 3px; padding: 0.22rem 0.5rem;
  text-decoration: none; color: var(--link); background: var(--bg-alt);
}
.ext:hover { border-color: var(--accent); }
.body { font-size: 0.98rem; }
.body p { margin: 0.65rem 0; }
.body h2 {
  font-family: var(--sans); font-size: 0.8rem; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--accent-ink);
  border-top: 1px solid var(--rule); padding-top: 0.8rem; margin: 1.4rem 0 0.4rem;
}
.body ul, .body ol { margin: 0.5rem 0; padding-left: 1.3rem; }
.body li { margin: 0.28rem 0; }
.body blockquote {
  margin: 0.8rem 0; padding: 0.5rem 0.9rem; border-left: 3px solid var(--accent);
  background: var(--bg-alt); font-style: italic; color: var(--ink-soft);
}
.body img { max-width: 100%; height: auto; }

/* Tables */
.tbl-scroll { overflow-x: auto; margin: 0.7rem 0; -webkit-overflow-scrolling: touch; }
table { border-collapse: collapse; font-family: var(--sans); font-size: 0.8rem; width: 100%; }
th, td { text-align: left; padding: 0.35rem 0.55rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
th {
  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--ink-faint); border-bottom: 2px solid var(--ink);
}
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr:hover td { background: var(--bg-alt); }
td a { text-decoration: none; }
td a:hover { text-decoration: underline; }

/* Status chips */
.chip {
  display: inline-block; font-family: var(--sans); font-size: 0.66rem;
  font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em;
  border-radius: 3px; padding: 0.14rem 0.42rem; white-space: nowrap; vertical-align: middle;
}
.s-pass { background: var(--chip-pass-bg); color: var(--chip-pass-ink); }
.s-fail { background: var(--chip-fail-bg); color: var(--chip-fail-ink); }
.s-mixed { background: var(--chip-mixed-bg); color: var(--chip-mixed-ink); }
.s-target { background: var(--chip-target-bg); color: var(--chip-target-ink); }
.s-desc { background: var(--chip-desc-bg); color: var(--chip-desc-ink); }
.s-proc { background: var(--chip-proc-bg); color: var(--chip-proc-ink); }

/* Related graph block */
.related { border-top: 2px solid var(--ink); margin-top: 2rem; padding-top: 0.8rem; }
.related h2 {
  font-family: var(--sans); font-size: 0.8rem; text-transform: uppercase;
  letter-spacing: 0.1em; margin: 0 0 0.15rem;
}
.rel-note { font-size: 0.8rem; color: var(--ink-faint); margin: 0 0 0.7rem; font-family: var(--sans); }
.rel-group h3 {
  font-family: var(--sans); font-size: 0.68rem; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--ink-faint); margin: 0.9rem 0 0.25rem;
}
.rel-group ul { list-style: none; margin: 0; padding: 0; }
.rel-group li {
  padding: 0.3rem 0; border-bottom: 1px dotted var(--rule);
  font-size: 0.88rem; display: flex; gap: 0.5rem; align-items: baseline; flex-wrap: wrap;
}
.rel-group li a { font-weight: 600; text-decoration: none; }
.rel-group li a:hover { text-decoration: underline; }
.rel-short { color: var(--ink-faint); font-size: 0.8rem; }
.rel-type { font-family: var(--sans); font-size: 0.68rem; color: var(--ink-faint); text-transform: uppercase; }

/* Overview page */
.lede { padding: 1.6rem 0 0.4rem; border-bottom: 1px solid var(--rule); }
.lede h1 { font-size: 1.85rem; max-width: 44rem; }
.lede .authors { font-family: var(--sans); font-size: 0.85rem; color: var(--ink-soft); margin: 0.3rem 0 0.8rem; }
.lede .abstract { max-width: 46rem; font-size: 0.95rem; color: var(--ink-soft); }
.statrow {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(10.5rem, 1fr));
  gap: 0; border: 1px solid var(--rule); margin: 1.1rem 0; background: var(--bg-alt);
}
.stat { padding: 0.6rem 0.8rem; border-right: 1px solid var(--rule); }
.stat:last-child { border-right: none; }
.stat b { display: block; font-size: 1.15rem; font-variant-numeric: tabular-nums; }
.stat span { font-family: var(--sans); font-size: 0.7rem; color: var(--ink-faint); line-height: 1.3; display: block; margin-top: 0.15rem; }
.sec { padding: 1.4rem 0 0.4rem; }
.sec > h2 {
  font-family: var(--sans); font-size: 0.85rem; text-transform: uppercase;
  letter-spacing: 0.12em; color: var(--accent-ink); margin: 0 0 0.2rem;
}
.sec > .sec-note { font-size: 0.85rem; color: var(--ink-faint); margin: 0 0 0.7rem; font-family: var(--sans); }
.figrow { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1rem; margin: 0.8rem 0; }
.figrow figure { margin: 0; border: 1px solid var(--rule); padding: 0.5rem; background: #fff; }
@media (prefers-color-scheme: dark) { .figrow figure { background: #f4f2ec; } }
.figrow img { width: 100%; height: auto; display: block; }
.figrow figcaption { font-family: var(--sans); font-size: 0.72rem; color: #4c483f; margin-top: 0.35rem; }
.figrow figcaption a { color: inherit; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1.6rem; }
@media (max-width: 44rem) { .two-col { grid-template-columns: 1fr; } }
.terminal {
  background: #141310; color: #d6d1c4; border-radius: 4px; padding: 0.7rem 0.9rem;
  font-family: var(--mono); font-size: 0.8rem; overflow-x: auto; position: relative;
}
.terminal pre { margin: 0; }
.terminal button {
  position: absolute; top: 0.45rem; right: 0.5rem; font-family: var(--sans);
  font-size: 0.68rem; background: #37342b; color: #d6d1c4; border: none;
  border-radius: 3px; padding: 0.2rem 0.5rem; cursor: pointer;
}
.timeline { list-style: none; margin: 0.6rem 0; padding: 0; }
.timeline li {
  display: grid; grid-template-columns: 6.4rem 1fr; gap: 0.8rem;
  padding: 0.42rem 0; border-bottom: 1px dotted var(--rule); font-size: 0.9rem;
}
.timeline .tdate { font-family: var(--mono); font-size: 0.74rem; color: var(--ink-faint); padding-top: 0.15rem; }
.timeline b { font-weight: 600; }
.timeline .tnote { color: var(--ink-soft); font-size: 0.84rem; }
@media (max-width: 34rem) { .timeline li { grid-template-columns: 1fr; gap: 0.1rem; } }
/* Reading-mode toggle (overview page) */
.mode-toggle {
  display: inline-flex; border: 1px solid var(--ink); border-radius: 4px;
  overflow: hidden; margin: 0.7rem 0 0.1rem; font-family: var(--sans);
}
.mode-toggle button {
  font-size: 0.74rem; font-weight: 700; letter-spacing: 0.02em;
  padding: 0.32rem 0.75rem; border: none; background: var(--bg);
  color: var(--ink-soft); cursor: pointer;
}
.mode-toggle button + button { border-left: 1px solid var(--ink); }
.mode-toggle button.on { background: var(--ink); color: var(--bg); }
.mode-toggle button:not(.on):hover { color: var(--ink); }
.mode-note { font-family: var(--sans); font-size: 0.72rem; color: var(--ink-faint); margin: 0.25rem 0 0; }
.lang-plain { display: none; }
html.plain .lang-tech { display: none; }
html.plain .lang-plain { display: block; }
html.plain .lede .abstract { font-size: 1.02rem; }

/* Q&A page */
.qa .body h2 {
  font-family: var(--serif); font-size: 1.18rem; font-weight: 700;
  text-transform: none; letter-spacing: -0.01em; color: var(--ink);
  border-top: 1px solid var(--rule); padding-top: 1rem; margin: 1.5rem 0 0.4rem;
}
.qa .part {
  font-family: var(--sans); font-size: 0.74rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.14em; color: var(--accent-ink);
  border-top: 2px solid var(--ink); padding-top: 0.9rem; margin: 2.2rem 0 0.2rem;
}
.qa .checknote {
  font-family: var(--sans); font-size: 0.78rem; color: var(--ink-faint);
  border: 1px dashed var(--rule); border-radius: 4px; padding: 0.5rem 0.8rem; margin: 0.8rem 0;
}
.qa-card {
  width: min(100%, 30rem); margin: 1rem auto 1.8rem;
}
.qa-card a:first-child { display: block; }
.qa-card img {
  display: block; width: 100%; height: auto;
  border: 1px solid var(--rule); background: #f4eedf;
  box-shadow: 0 0.35rem 1.1rem rgba(26, 25, 21, 0.08);
}
.qa-card figcaption {
  margin-top: 0.35rem; text-align: right;
  font-family: var(--sans); font-size: 0.7rem; color: var(--ink-faint);
}
.qa-card figcaption a { color: inherit; }

.colophon { border-top: 2px solid var(--ink); margin-top: 2.5rem; padding: 0.9rem 0 1.6rem; }
.colophon p { font-family: var(--sans); font-size: 0.76rem; color: var(--ink-faint); margin: 0.25rem 0; }
.smallprint { font-family: var(--sans); font-size: 0.78rem; color: var(--ink-faint); }