/* Damiana Data. Geist for reading and interface, Geist Mono for data and
   labels; Young Serif and Martian Mono appear only in the wordmark.
   Light is paper, dark is neutral black; green is kept for the mark and the
   evidence colors. The hero stage is black in both themes. */

@font-face { font-family: "Geist"; src: url("/fonts/Geist-Variable.ttf") format("truetype"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Geist Mono"; src: url("/fonts/GeistMono-Variable.ttf") format("truetype"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "DD Young Serif"; src: url("/fonts/YoungSerif-Regular.ttf") format("truetype"); font-weight: 400; font-display: swap; }
@font-face { font-family: "DD Martian Mono"; src: url("/fonts/MartianMono-Variable.ttf") format("truetype"); font-weight: 100 800; font-stretch: 75% 112%; font-display: swap; }

:root {
  --ground: #EEEBE1;
  --raised: #E6E2D5;
  --ink: #0E1410;
  --ink-2: #2B342D;
  --muted: #5A645B;
  --line: #D6D0BF;
  --line-strong: #0E1410;
  --accent: #35543F;
  --confirmed: #4C6B57;
  --estimated: #855607;
  --missing: #A13E2A;
  --stage: #0A0A0A;
  --stage-line: #0A0A0A;
  --sans: "Geist", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Geist Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --measure: 68ch;
  --wide: 1120px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ground: #0A0A0A;
    --raised: #161616;
    --ink: #EDEDEA;
    --ink-2: #C9C9C4;
    --muted: #9A9A95;
    --line: #222222;
    --line-strong: #3A3A3A;
    --accent: #A8C2B0;
    --confirmed: #7C9A86;
    --estimated: #E0A43A;
    --missing: #E8735F;
    --stage: #0A0A0A;
    --stage-line: #262626;
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  padding-inline: clamp(16px, 4vw, 40px);
}
a { color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, video:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
img, video { max-width: 100%; }
code { font-family: var(--mono); font-size: .86em; overflow-wrap: anywhere; }
h1, h2, h3, h4 { font-weight: 500; letter-spacing: -.02em; text-wrap: balance; margin: 0; }
p { margin: 0; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; background: var(--ink); color: var(--ground); padding: 8px 12px; z-index: 10; }

.label, .eyebrow { font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.eyebrow { display: block; margin-bottom: 18px; }

.mark path { fill: currentColor; }
.mark { flex-shrink: 0; display: block; }
.mark-confirmed, .cls-confirmed { color: var(--confirmed); }
.mark-estimated, .cls-estimated { color: var(--estimated); }
.mark-missing, .cls-missing { color: var(--missing); }
.cls { font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: .08em; }

/* frame */
.site-head, main, .site-foot { max-width: var(--wide); margin-inline: auto; }
.site-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 32px; padding-block: 20px; border-bottom: 1px solid var(--line); }
.lockup { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; }
.lockup .mark { color: var(--confirmed); }
.lockup .word { font-family: "DD Young Serif", Georgia, serif; font-size: 21px; line-height: 1; letter-spacing: 0; }
.lockup .data { font-family: "DD Martian Mono", var(--mono); font-stretch: 100%; font-size: 9px; letter-spacing: .38em; color: var(--confirmed); margin-top: 3px; }
nav { display: flex; gap: 4px; }
nav a { color: var(--muted); text-decoration: none; font-size: 14px; padding: 6px 12px; border-radius: 999px; }
nav a:hover { color: var(--ink); background: var(--raised); }
nav a[aria-current="page"] { color: var(--ink); background: var(--raised); }

.site-foot { border-top: 1px solid var(--line); margin-top: 120px; padding-block: 28px 44px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px 40px; color: var(--muted); font-size: 13px; }
.site-foot .tag { color: var(--ink); font-size: 15px; font-weight: 500; }
.site-foot p { max-width: 56ch; }
.foot-brand { display: grid; gap: 10px; align-content: start; }
.social { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 18px; }
.social a { color: var(--ink-2); text-decoration: none; font-size: 13px; }
.social a span { font-family: var(--mono); font-size: 11px; color: var(--muted); }
.social a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }

/* home */
.hero { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: clamp(28px, 5vw, 72px); align-items: center; padding-block: clamp(40px, 8vw, 96px) clamp(40px, 6vw, 72px); }
@media (max-width: 860px) { .hero { grid-template-columns: 1fr; } }
.hero h1 { font-size: clamp(32px, 4.4vw, 54px); line-height: 1.06; letter-spacing: -.035em; margin-bottom: 22px; }
.hero h1 em { font-style: normal; color: var(--confirmed); }
.lede { font-size: 17px; line-height: 1.6; color: var(--muted); max-width: 58ch; }
.hero .rules-inline { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; }
.hero .rules-inline li { font-family: var(--mono); font-size: 11px; letter-spacing: .04em; color: var(--ink-2); border: 1px solid var(--line); border-radius: 999px; padding: 5px 11px; }

.stage { position: relative; background: var(--stage); border: 1px solid var(--stage-line); border-radius: 18px; overflow: hidden; aspect-ratio: 1 / 1; max-width: 520px; width: 100%; justify-self: end; }
@media (max-width: 860px) { .stage { justify-self: start; max-width: 420px; } }
.stage video, .stage img { display: block; width: 100%; height: 100%; object-fit: cover; }
.stage .still { display: none; }
.stage figcaption { position: absolute; left: 16px; bottom: 14px; font-family: var(--mono); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; color: #9A9A95; }
@media (prefers-reduced-motion: reduce) { .stage video { display: none; } .stage .still { display: block; } }

.section-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 10px 28px; padding-bottom: 12px; border-bottom: 1px solid var(--line-strong); }
.section-head h2 { font-size: 15px; letter-spacing: -.005em; }
.legend { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 18px; font-family: var(--mono); font-size: 11px; color: var(--muted); }
.legend li { display: flex; align-items: center; gap: 7px; }

.piece-list { list-style: none; margin: 0; padding: 0; }
.piece-row { border-bottom: 1px solid var(--line); }
.piece-row a {
  display: grid; grid-template-columns: 28px 112px minmax(0, 1fr) max-content;
  column-gap: 20px; align-items: center; padding: 20px 12px; margin-inline: -12px; margin-block: 4px;
  color: var(--ink); text-decoration: none; border-radius: 10px; transition: background-color .15s ease;
}
.piece-row a:hover { background: var(--raised); }
.row-date, .row-topic { font-family: var(--mono); font-size: 11px; color: var(--muted); letter-spacing: .02em; }
.row-text { display: grid; gap: 2px; min-width: 0; }
.row-title { font-size: 17px; font-weight: 500; letter-spacing: -.015em; }
.row-dek { color: var(--muted); font-size: 14px; }
@media (max-width: 720px) {
  .piece-row a { grid-template-columns: 24px minmax(0, 1fr); row-gap: 6px; align-items: start; }
  .row-date, .row-topic, .row-text { grid-column: 2; }
  .row-mark { grid-row: span 3; padding-top: 2px; }
}
.note { font-family: var(--mono); font-size: 11px; color: var(--muted); margin-top: 16px; }

/* piece */
.piece-head { padding-block: clamp(36px, 6vw, 72px) 36px; max-width: 820px; }
.piece-head h1 { font-size: clamp(30px, 4vw, 46px); line-height: 1.08; letter-spacing: -.035em; margin-bottom: 14px; }
.piece-grid { display: grid; grid-template-columns: minmax(0, 340px) minmax(0, 1fr); gap: clamp(28px, 5vw, 72px); align-items: start; }
@media (max-width: 860px) { .piece-grid { grid-template-columns: 1fr; } }
.video { margin: 0; position: sticky; top: 24px; }
@media (max-width: 860px) { .video { position: static; max-width: 340px; } }
.video video { display: block; width: 100%; height: auto; aspect-ratio: 9 / 16; background: var(--stage); border-radius: 14px; border: 1px solid var(--stage-line); }
figcaption { font-family: var(--mono); font-size: 11px; color: var(--muted); margin-top: 10px; line-height: 1.6; }
.piece-body { display: grid; gap: 56px; min-width: 0; }
.piece-body h2, .proof h2 { font-size: 15px; letter-spacing: -.005em; padding-bottom: 12px; border-bottom: 1px solid var(--line-strong); margin-bottom: 4px; }
.claims { margin: 0; padding: 0; list-style: none; counter-reset: claim; }
.claims li { counter-increment: claim; display: grid; grid-template-columns: 30px minmax(0, 1fr); column-gap: 10px; padding-block: 14px; border-bottom: 1px solid var(--line); }
.claims li::before { content: counter(claim, decimal-leading-zero); font-family: var(--mono); font-size: 11px; color: var(--muted); padding-top: 3px; grid-row: span 3; }
.claims p { grid-column: 2; max-width: var(--measure); }
.claim { font-size: 16px; font-weight: 500; letter-spacing: -.01em; line-height: 1.45; }
.claim-result { font-size: 15px; color: var(--ink-2); margin-top: 4px; }
.claim-sub { color: var(--muted); font-size: 14px; margin-top: 4px; }
.evidence { list-style: none; margin: 0; padding: 0; }
.evidence li { display: grid; grid-template-columns: 26px minmax(0, 1fr) max-content; align-items: center; gap: 14px; padding-block: 12px; border-bottom: 1px solid var(--line); }
.ev-name { font-size: 15px; }

.proof { max-width: 760px; margin-top: 96px; }
.proof h3 { font-size: 17px; margin: 36px 0 10px; }
.proof h4 { font-size: 15px; margin: 26px 0 8px; }
.proof p, .proof li { max-width: var(--measure); color: var(--ink-2); font-size: 15px; }
.proof p + p { margin-top: 10px; }
.proof ul { padding-left: 18px; margin: 10px 0; }
.proof li { margin-bottom: 6px; }
.proof strong { color: var(--ink); font-weight: 600; }
.table-wrap { overflow-x: auto; margin-block: 14px; }
table { border-collapse: collapse; font-family: var(--mono); font-size: 12.5px; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 8px 20px 8px 0; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { font-weight: 500; color: var(--muted); }
.spec { display: grid; grid-template-columns: max-content minmax(0, 1fr); margin: 0; }
.spec dt, .spec dd { margin: 0; padding-block: 10px; border-bottom: 1px solid var(--line); }
.spec dt { font-family: var(--mono); font-size: 11px; color: var(--muted); padding-right: 24px; letter-spacing: .02em; }
.spec dd { font-size: 14px; min-width: 0; color: var(--ink-2); }
.spec.mono dd { font-size: 12px; }
@media (max-width: 620px) { .spec { grid-template-columns: 1fr; } .spec dt { border-bottom: 0; padding-bottom: 0; } }
.disclaimer { font-family: var(--mono); font-size: 11px; color: var(--muted); margin-top: 56px; }

/* method and about */
.prose-page { max-width: 760px; padding-block: clamp(36px, 6vw, 72px) 0; }
.prose-page h1 { font-size: clamp(30px, 4vw, 46px); line-height: 1.08; letter-spacing: -.035em; margin-bottom: 14px; }
.prose-page h2 { font-size: 15px; letter-spacing: -.005em; margin-top: 64px; padding-bottom: 12px; border-bottom: 1px solid var(--line-strong); }
.prose-page p, .prose-page li { max-width: var(--measure); color: var(--ink-2); }
.prose-page p + p { margin-top: 14px; }
.prose-page .lede { color: var(--muted); }
.classes { list-style: none; margin: 0; padding: 0; }
.classes li { display: grid; grid-template-columns: 48px minmax(0, 1fr); gap: 20px; align-items: center; padding-block: 18px; border-bottom: 1px solid var(--line); }
.classes h3 { font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: .08em; margin-bottom: 4px; }
.classes p { font-size: 15px; }
.rules { padding-left: 18px; }
.rules li { margin-top: 12px; }
.rules strong { color: var(--ink); font-weight: 600; }

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