:root {
  --bg: #0b0d12;
  --panel: #11141b;
  --ink: #e8edf2;
  --dim: #8f9dab;
  --faint: #5d6a78;
  --line: #222b36;
  --accent: #ffc94a;
  --merge: #e2574c;
  --ok: #7fdc5a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Fraunces", Georgia, serif;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

main { max-width: 60rem; margin: 0 auto; padding: 3.5rem 1.15rem 6rem; }

.mono { font-family: "Martian Mono", ui-monospace, SFMono-Regular, Menlo, monospace; }

.top { margin-bottom: 3rem; }
.kicker { font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--faint); margin: 0 0 1.2rem; }
h1 { font-size: clamp(2.4rem, 8vw, 4.4rem); line-height: .98; margin: 0 0 1rem; letter-spacing: -.02em; }
.dek { font-size: clamp(1.05rem, 2.4vw, 1.28rem); color: var(--ink); margin: 0 0 1.2rem; max-width: 44rem; }
.sub { color: var(--dim); max-width: 44rem; margin: 0; }
.sub b, .dek b { color: var(--accent); font-weight: 600; }

.loading { color: var(--faint); padding: 3rem 0; font-size: .85rem; }

h2 {
  font-size: clamp(1.4rem, 3.4vw, 1.95rem);
  line-height: 1.15; margin: 0 0 .9rem; letter-spacing: -.01em;
}
h3 { font-size: 1.08rem; margin: 2rem 0 .6rem; color: var(--ink); }
p { margin: 0 0 1rem; }
section > p { max-width: 44rem; }

.instrument, .finding, .check {
  border: 1px solid var(--line);
  border-radius: .7rem;
  padding: clamp(1.1rem, 3vw, 2rem);
  margin: 2.6rem 0;
  background: var(--panel);
}
.check { border-left: 3px solid var(--ok); }
.check h2 { color: var(--ok); font-size: 1.15rem; font-family: "Martian Mono", monospace;
            letter-spacing: .04em; text-transform: uppercase; }

/* ---------------------------------------------------------------- controls */

.controls { margin: 1.4rem 0; }
.controls label, .tune label { display: block; margin-bottom: .5rem; }
.controls label > span:first-child, .tune label > span:first-child {
  display: block; font: 600 .7rem/1.5 "Martian Mono", monospace;
  letter-spacing: .09em; text-transform: uppercase; color: var(--dim); margin-bottom: .3rem;
}
input[type=range] { width: 100%; accent-color: var(--accent); }
.hint { font-size: .68rem; color: var(--faint); display: block; }

.readouts, .stat-row { display: flex; flex-wrap: wrap; gap: 1.4rem 2.2rem; margin-top: 1rem; }
.readouts > div, .stat { display: flex; flex-direction: column; }
.big { font-size: clamp(1.5rem, 4vw, 2.1rem); color: var(--accent); line-height: 1.1; }
.unit { font-size: .68rem; letter-spacing: .06em; text-transform: uppercase;
        color: var(--faint); font-family: "Martian Mono", monospace; }

.tune { margin: 1.2rem 0; border-top: 1px solid var(--line); padding-top: .8rem; }
.tune summary { cursor: pointer; font: .78rem/1.6 "Martian Mono", monospace;
                color: var(--dim); letter-spacing: .04em; }
.tune summary:hover { color: var(--accent); }
.tune[open] summary { margin-bottom: .9rem; }

.fine { font-size: .84rem; color: var(--dim); max-width: 44rem; }
.fine .mono { color: var(--accent); }

/* -------------------------------------------------------------- the wall */

.wall-grid {
  display: flex; flex-wrap: wrap; gap: 5px;
  margin: 1.4rem 0; align-items: flex-start;
}
.group { display: flex; flex-wrap: wrap; gap: 2px; align-items: center; }
.group.merged {
  outline: 1px solid var(--merge);
  outline-offset: 2px;
  border-radius: 3px;
  padding: 2px;
  position: relative;
}
.flag { display: block; border-radius: 1px; cursor: pointer; }
.flag:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.group-tag { display: none; }

.merged { margin-top: 1.6rem; }
.merged h3 { margin-top: 0; }
#merged-list ul { list-style: none; padding: 0; margin: 0;
                  display: grid; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); gap: .35rem .9rem; }
#merged-list li { font-size: .86rem; color: var(--ink); }
#merged-list .n { color: var(--merge); font-family: "Martian Mono", monospace;
                  font-size: .7rem; margin-right: .35rem; }
#merged-list .none { color: var(--dim); font-size: .9rem; }

/* ----------------------------------------------------------- comparator */

.pickers { display: flex; flex-wrap: wrap; gap: 1rem; margin: 1.2rem 0; }
.pickers label { font: .72rem/1.6 "Martian Mono", monospace; letter-spacing: .06em;
                 text-transform: uppercase; color: var(--dim); }
select {
  display: block; margin-top: .3rem; background: #0a0c10; color: var(--ink);
  border: 1px solid var(--line); border-radius: .35rem; padding: .45rem .6rem;
  font: .9rem/1.4 "Fraunces", Georgia, serif; min-width: 13rem; max-width: 100%;
}

.cmp-stage {
  display: flex; gap: 3rem; align-items: center; justify-content: center;
  flex-wrap: wrap; min-height: 13rem; padding: 2rem 1rem;
  background: #07090d; border-radius: .5rem; margin: 1.2rem 0;
}
.cmp-stage figure { margin: 0; display: flex; flex-direction: column; align-items: center; gap: .8rem; }
.cmp-stage canvas { display: block; image-rendering: auto; }
.cmp-stage figcaption { font-size: .68rem; color: var(--faint); letter-spacing: .05em; }

.verdict { font: .8rem/1.6 "Martian Mono", monospace; letter-spacing: .03em; padding: .55rem .8rem;
           border-radius: .35rem; display: inline-block; }
.verdict.merged { background: rgba(226,87,76,.14); color: var(--merge); }
.verdict.apart { background: rgba(127,220,90,.12); color: var(--ok); }

.curve, .scatter { width: 100%; height: 240px; display: block; margin: 1.4rem 0 .6rem;
                   background: #07090d; border-radius: .5rem; }
.scatter { height: 300px; }

.cal-bar { height: 26px; background: linear-gradient(90deg, var(--accent), #e2a53c);
           border-radius: 3px; margin: .8rem 0; max-width: 100%; }

/* -------------------------------------------------------------- tables */

.table-wrap { overflow-x: auto; margin: 1.2rem 0; -webkit-overflow-scrolling: touch; }
table { border-collapse: collapse; width: 100%; font-size: .85rem; min-width: 26rem; }
caption { text-align: left; font: .68rem/1.6 "Martian Mono", monospace; letter-spacing: .06em;
          text-transform: uppercase; color: var(--faint); padding-bottom: .5rem; }
th, td { text-align: left; padding: .4rem .7rem .4rem 0; border-bottom: 1px solid var(--line); }
th { font: 600 .66rem/1.6 "Martian Mono", monospace; letter-spacing: .08em;
     text-transform: uppercase; color: var(--dim); white-space: nowrap; }
td.num, th:first-child { font-family: "Martian Mono", monospace; font-size: .78rem; }
td.num { text-align: right; padding-right: 1.2rem; white-space: nowrap; }
tbody tr:hover { background: rgba(255,201,74,.045); }
.new { font: .62rem/1 "Martian Mono", monospace; color: var(--faint);
       letter-spacing: .05em; text-transform: uppercase; }

.adjudication { border-left: 2px solid var(--ok); padding-left: .9rem; }
.adjudication b { color: var(--ok); }

.folklore, .caveats { padding-left: 1.1rem; max-width: 44rem; }
.folklore li, .caveats li { margin-bottom: .8rem; font-size: .88rem; color: var(--dim); }
.folklore b, .caveats b { color: var(--ink); }

.foot { border-top: 1px solid var(--line); padding-top: 1.4rem; margin-top: 3rem; }
.foot p { font-size: .68rem; color: var(--faint); line-height: 1.8; }
.foot a { color: var(--dim); }

@media (max-width: 640px) {
  .cmp-stage { gap: 1.6rem; padding: 1.2rem .6rem; }
  .readouts, .stat-row { gap: 1rem 1.4rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}

.controls.two-up { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem 2rem; }
@media (max-width: 640px) { .controls.two-up { grid-template-columns: 1fr; } }