/* Provable Custody — one stylesheet, no inline style attributes anywhere.
   The production CSP forbids inline style and inline script; tools/serve.py
   sends the same headers, so a page that works locally works live. */

:root{
  --paper:#f6f5f2; --card:#fffefb; --ink:#12171c; --ink2:#3c464f; --ink3:#69737c;
  --rule:#dbd7cf; --rule2:#eceae4;
  --accent:#14584a; --accent2:#0f6b56; --accent-ink:#ffffff;
  --ok:#14584a; --caution:#8a5712; --fail:#8f2f22; --neutral:#4a5560;
  --band:#0a0e12; --band-ink:#f4f2ee;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --serif: ui-serif, Charter, "Iowan Old Style", Georgia, "Times New Roman", serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --maxw:74rem; --textw:40rem;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#0e1216; --card:#141a20; --ink:#e9e6e0; --ink2:#b4bcc4; --ink3:#8b949c;
    --rule:#2a333c; --rule2:#1d242b;
    --accent:#57c3a5; --accent2:#7ad4ba; --accent-ink:#06120f;
    --ok:#57c3a5; --caution:#dfa84a; --fail:#e08375; --neutral:#9aa5b0;
  }
}
:root[data-theme="dark"]{
  --paper:#0e1216; --card:#141a20; --ink:#e9e6e0; --ink2:#b4bcc4; --ink3:#8b949c;
  --rule:#2a333c; --rule2:#1d242b;
  --accent:#57c3a5; --accent2:#7ad4ba; --accent-ink:#06120f;
  --ok:#57c3a5; --caution:#dfa84a; --fail:#e08375; --neutral:#9aa5b0;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--serif);font-size:1.0625rem;line-height:1.62;
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
img,video{max-width:100%;display:block}
a{color:var(--accent);text-underline-offset:.18em;text-decoration-thickness:.06em}
a:hover{color:var(--accent2)}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.skip{position:absolute;left:-9999px;top:0;background:var(--accent);color:var(--accent-ink);
  padding:.6rem 1rem;z-index:99}
.skip:focus{left:0}

.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(1rem,4vw,2.5rem)}
.sec{padding-block:clamp(2.5rem,6vw,4.5rem);border-top:1px solid var(--rule2)}
.sec:first-of-type{border-top:0}
main > .sec:first-child{padding-top:clamp(1.6rem,3.2vw,2.4rem)}

/* ---------- nav ---------- */
.topnav{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--paper) 92%,transparent);
  backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--rule)}
.topnav__in{display:flex;align-items:center;gap:.7rem;min-height:3.4rem;flex-wrap:wrap;max-width:82rem}
.brand{display:flex;align-items:center;gap:.55rem;font-family:var(--sans);font-weight:650;
  letter-spacing:.005em;color:var(--ink);text-decoration:none;font-size:.95rem}
.brand__mark{width:1.05rem;height:1.05rem;border-radius:2px;background:var(--accent);
  box-shadow:inset 0 0 0 3px var(--paper), 0 0 0 1px var(--accent)}
/* max-width:none because the generic `ul` rule below caps lists at the text
   measure, which silently wrapped the last nav item onto a second row at every
   width — a reading-width rule applied to a component that is not prose. */
.navlist{list-style:none;display:flex;gap:0;margin:0;padding:0;flex-wrap:wrap;
  margin-left:auto;max-width:none}
.navlist a{font-family:var(--sans);font-size:.79rem;color:var(--ink2);text-decoration:none;
  padding:.4rem .46rem;border-radius:5px;display:block;white-space:nowrap}
@media (min-width:1180px){ .navlist a{font-size:.82rem;padding:.4rem .55rem} }
.navlist a:hover{background:var(--rule2);color:var(--ink)}
.navlist a[aria-current="page"]{color:var(--ink);background:var(--rule2);font-weight:600}
.navtoggle{display:none;margin-left:auto;font-family:var(--sans);font-size:.8rem;
  background:var(--card);border:1px solid var(--rule);color:var(--ink);padding:.4rem .7rem;border-radius:6px}
@media (max-width:860px){
  .navtoggle{display:block}
  .navlist{display:none;width:100%;flex-direction:column;padding-bottom:.6rem}
  .navlist.is-open{display:flex}
}

.internalbar{margin:0;background:var(--fail);color:#fff;font-family:var(--sans);font-size:.8rem;
  letter-spacing:.04em;text-transform:uppercase;padding:.5rem 1rem;text-align:center}

/* ---------- full-bleed bands ---------- */
.band{position:relative;isolation:isolate;background:var(--band);overflow:hidden}
.band--hero{min-height:clamp(24rem,62vh,34rem);display:grid}
.band--mid{min-height:clamp(18rem,42vh,26rem);display:grid;margin-block:0}
.band__v,.band__still{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.band__still{z-index:0}
.band__v{z-index:1}
@media (prefers-reduced-motion: reduce){ .band__v{display:none} }
.band__scrim{position:absolute;inset:0;z-index:2;
  background:linear-gradient(180deg, rgba(6,9,12,.70) 0%, rgba(6,9,12,.46) 42%, rgba(6,9,12,.76) 100%)}
.band__inner{position:relative;z-index:3;align-self:end;color:var(--band-ink);
  max-width:var(--maxw);margin-inline:auto;width:100%;
  padding:clamp(2rem,6vw,4rem) clamp(1rem,4vw,2.5rem)}
.band__h{font-size:clamp(2rem,5.4vw,3.5rem);line-height:1.07;margin:.2rem 0 .6rem;
  letter-spacing:-.018em;font-weight:600;max-width:22ch;text-wrap:balance}
.band--mid .band__h{font-size:clamp(1.5rem,3.6vw,2.3rem);max-width:26ch}
.band .lede{font-size:clamp(1.02rem,1.7vw,1.24rem);max-width:52ch;color:#e7e4de;margin:0}
.band .kicker{color:#a9d8c9}
.plainhead{padding-block:clamp(2rem,5vw,3.4rem) clamp(1rem,3vw,2rem);border-bottom:1px solid var(--rule)}
.plainhead h1{font-size:clamp(1.8rem,4.4vw,2.8rem);line-height:1.1;margin:.2rem 0 .6rem;
  letter-spacing:-.016em;font-weight:600;max-width:24ch;text-wrap:balance}
.plainhead .lede{max-width:56ch}

.kicker{font-family:var(--sans);font-size:.74rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent);margin:0 0 .1rem}
.lede{font-size:1.16rem;color:var(--ink2);line-height:1.55;margin:0 0 1rem;max-width:56ch}

h2{font-size:clamp(1.35rem,2.6vw,1.85rem);line-height:1.18;letter-spacing:-.012em;
  margin:2.2rem 0 .7rem;font-weight:600;max-width:30ch;text-wrap:balance}
h3{font-size:1.12rem;margin:1.6rem 0 .5rem;font-weight:650;font-family:var(--sans);letter-spacing:-.004em}
h4{font-size:.95rem;margin:1.2rem 0 .4rem;font-family:var(--sans);font-weight:650;color:var(--ink2)}
p{max-width:var(--textw)}
.is-wide p{max-width:56rem}
.sec > .wrap > p, .prose p{max-width:var(--textw)}
ul,ol{max-width:var(--textw);padding-left:1.2rem}
li{margin:.3rem 0}
strong{font-weight:650}
hr{border:0;border-top:1px solid var(--rule);margin:2rem 0}

.pullquote{font-size:clamp(1.25rem,2.6vw,1.7rem);line-height:1.3;font-weight:500;
  border-left:3px solid var(--accent);padding-left:1.1rem;margin:1.8rem 0;max-width:34ch;
  letter-spacing:-.01em}
.band .pullquote{border-color:var(--accent2);color:#fff}

/* ---------- cards, grids ---------- */
.grid{display:grid;gap:1rem;margin:1.4rem 0}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(19rem,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(15rem,1fr))}
.grid--4{grid-template-columns:repeat(auto-fit,minmax(12rem,1fr))}
.card{background:var(--card);border:1px solid var(--rule);border-radius:9px;
  padding:1.1rem 1.15rem}
.card h3,.card h4{margin-top:0}
.card p{max-width:none}
.card--link{text-decoration:none;color:inherit;display:block;transition:border-color .12s}
.card--link:hover{border-color:var(--accent);color:inherit}
.card__n{font-family:var(--sans);font-size:.72rem;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;color:var(--ink3);margin:0 0 .35rem}
.card__meta{font-family:var(--sans);font-size:.78rem;color:var(--ink3);margin:.5rem 0 0}

.stat{font-family:var(--sans);font-variant-numeric:tabular-nums}
.stat__n{display:block;font-size:clamp(2rem,5vw,3rem);line-height:1;font-weight:700;
  letter-spacing:-.03em;color:var(--ink)}
.stat__l{display:block;font-size:.8rem;color:var(--ink3);margin-top:.4rem;line-height:1.35}
.band .stat__n{color:#fff}
.band .stat__l{color:#cfd5d2}

/* ---------- notes ---------- */
.note{border-left:3px solid var(--rule);background:var(--rule2);padding:.9rem 1.1rem;
  margin:1.4rem 0;border-radius:0 7px 7px 0;max-width:48rem}
.note p{max-width:none}
.note p:last-child{margin-bottom:0}
.note__k{font-family:var(--sans);font-size:.7rem;font-weight:700;letter-spacing:.13em;
  text-transform:uppercase;color:var(--ink3);margin:0 0 .4rem}
.note--limit{border-color:var(--fail)}
.note--limit .note__k{color:var(--fail)}
.note--caution{border-color:var(--caution)}
.note--caution .note__k{color:var(--caution)}
.note--source{border-color:var(--neutral)}
.note--method{border-color:var(--accent)}
.note--method .note__k{color:var(--accent)}
.note--honest{border-color:var(--accent)}
.note--internal{border-color:var(--fail);background:color-mix(in srgb,var(--fail) 8%,transparent)}

/* ---------- tables ---------- */
.tablewrap{overflow-x:auto;margin:1.3rem 0;border:1px solid var(--rule);border-radius:8px;
  background:var(--card)}
table.t{border-collapse:collapse;width:100%;font-family:var(--sans);font-size:.88rem;min-width:34rem}
table.t th,table.t td{text-align:left;padding:.62rem .8rem;border-bottom:1px solid var(--rule2);
  vertical-align:top}
table.t thead th{font-size:.72rem;letter-spacing:.09em;text-transform:uppercase;color:var(--ink3);
  border-bottom:1px solid var(--rule);white-space:nowrap;font-weight:700}
table.t tbody th{font-weight:650;color:var(--ink)}
table.t tbody tr:last-child th,table.t tbody tr:last-child td{border-bottom:0}
table.t td.num,table.t th.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}

/* ---------- instruments ---------- */
.inst{background:var(--card);border:1px solid var(--rule);border-radius:11px;
  padding:clamp(1rem,3vw,1.6rem);margin:1.6rem 0}
.inst__h{display:flex;align-items:baseline;gap:.7rem;flex-wrap:wrap;margin:0 0 .2rem}
.inst__h h2,.inst__h h3{margin:0}
.inst__tag{font-family:var(--sans);font-size:.66rem;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;color:var(--accent-ink);background:var(--accent);
  padding:.16rem .45rem;border-radius:3px}
.inst p{max-width:46rem}
.field{display:block;margin:.9rem 0}
.field > span, .field__l{display:block;font-family:var(--sans);font-size:.78rem;font-weight:650;
  color:var(--ink2);margin-bottom:.3rem}
.field__hint{display:block;font-family:var(--sans);font-size:.75rem;color:var(--ink3);
  margin-top:.25rem;font-weight:400}
input[type=text],input[type=number],input[type=date],textarea,select{
  font-family:var(--sans);font-size:.92rem;width:100%;max-width:34rem;padding:.5rem .65rem;
  background:var(--paper);color:var(--ink);border:1px solid var(--rule);border-radius:6px}
textarea{font-family:var(--mono);font-size:.82rem;line-height:1.5;min-height:7rem;max-width:100%}
textarea.wide,input.wide{max-width:100%}
button,.btn{font-family:var(--sans);font-size:.85rem;font-weight:600;cursor:pointer;
  background:var(--accent);color:var(--accent-ink);border:1px solid var(--accent);
  padding:.48rem .9rem;border-radius:6px;text-decoration:none;display:inline-block}
button:hover,.btn:hover{background:var(--accent2);border-color:var(--accent2);color:var(--accent-ink)}
button.ghost,.btn.ghost{background:transparent;color:var(--ink);border-color:var(--rule)}
button.ghost:hover,.btn.ghost:hover{border-color:var(--accent);color:var(--ink);background:transparent}
button[disabled]{opacity:.45;cursor:not-allowed}
.btnrow{display:flex;gap:.5rem;flex-wrap:wrap;margin:1rem 0 .4rem;align-items:center}

.mono{font-family:var(--mono);font-size:.8rem;word-break:break-all;line-height:1.5}
.hashout{font-family:var(--mono);font-size:.78rem;background:var(--paper);border:1px solid var(--rule);
  border-radius:6px;padding:.6rem .7rem;word-break:break-all;line-height:1.55;overflow-x:auto}
.hashout mark{background:color-mix(in srgb,var(--caution) 34%,transparent);color:inherit;
  border-radius:2px;padding:0 1px}
pre.out{font-family:var(--mono);font-size:.76rem;line-height:1.55;background:var(--paper);
  border:1px solid var(--rule);border-radius:7px;padding:.75rem .85rem;overflow-x:auto;
  white-space:pre-wrap;word-break:break-word;max-height:26rem}

.meter{height:.5rem;background:var(--rule2);border-radius:99px;overflow:hidden;margin:.5rem 0;
  border:1px solid var(--rule)}
.meter__f{height:100%;background:var(--accent);width:0%}

.verdict{font-family:var(--sans);font-size:.82rem;font-weight:650;display:inline-flex;
  align-items:center;gap:.4rem;padding:.28rem .6rem;border-radius:5px;border:1px solid}
.verdict--ok{color:var(--ok);border-color:var(--ok);background:color-mix(in srgb,var(--ok) 10%,transparent)}
.verdict--fail{color:var(--fail);border-color:var(--fail);background:color-mix(in srgb,var(--fail) 10%,transparent)}
.verdict--warn{color:var(--caution);border-color:var(--caution);background:color-mix(in srgb,var(--caution) 12%,transparent)}
.verdict--none{color:var(--ink3);border-color:var(--rule)}

.checks{list-style:none;padding:0;margin:1rem 0;max-width:52rem}
.checks li{display:grid;grid-template-columns:1.4rem 1fr;gap:.6rem;padding:.5rem 0;
  border-bottom:1px solid var(--rule2);font-family:var(--sans);font-size:.86rem;align-items:start}
.checks li:last-child{border-bottom:0}
.checks .m{font-weight:700;line-height:1.5}
.checks .m--ok{color:var(--ok)}
.checks .m--fail{color:var(--fail)}
.checks .m--na{color:var(--ink3)}
.checks .d{color:var(--ink3);display:block;font-size:.8rem;margin-top:.12rem}

.stages{list-style:none;padding:0;margin:1rem 0;counter-reset:st;max-width:46rem}
.stages li{display:grid;grid-template-columns:2rem 1fr auto;gap:.7rem;align-items:center;
  padding:.55rem .2rem;border-bottom:1px solid var(--rule2);font-family:var(--sans);font-size:.88rem}
.stages li::before{counter-increment:st;content:counter(st);font-size:.72rem;color:var(--ink3);
  font-weight:700;font-variant-numeric:tabular-nums}
.stages .st__a{color:var(--ink3);font-size:.78rem;display:block}
.stages select{max-width:11rem;font-size:.8rem;padding:.28rem .4rem}

.pill{font-family:var(--sans);font-size:.7rem;font-weight:700;letter-spacing:.06em;
  text-transform:uppercase;padding:.14rem .42rem;border-radius:3px;border:1px solid var(--rule);
  color:var(--ink3);white-space:nowrap}
.pill--ok{color:var(--ok);border-color:var(--ok)}
.pill--warn{color:var(--caution);border-color:var(--caution)}
.pill--fail{color:var(--fail);border-color:var(--fail)}

/* ---------- deck ---------- */
.slide{background:var(--card);border:1px solid var(--rule);border-radius:11px;
  padding:clamp(1.2rem,3.5vw,2.2rem);margin:1.2rem 0}
.slide__n{font-family:var(--sans);font-size:.7rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink3);margin:0 0 .5rem}
.slide h2{margin-top:0}
.slide ul{font-family:var(--sans);font-size:.92rem}

/* ---------- module pages ---------- */
.modmeta{display:flex;gap:1.2rem;flex-wrap:wrap;max-width:none;font-family:var(--sans);font-size:.8rem;
  color:var(--ink3);margin:.6rem 0 0;padding:0;list-style:none}
.modnav{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  border-top:1px solid var(--rule);padding-top:1.2rem;margin-top:2rem;font-family:var(--sans);font-size:.86rem}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--rule);margin-top:3rem;padding-block:2.2rem 3rem;
  font-family:var(--sans);font-size:.85rem;color:var(--ink3);background:var(--card)}
.foot p{max-width:52rem;margin:.3rem 0}
.foot__org{color:var(--ink2)}
.foot__note{font-size:.78rem;line-height:1.55;margin-top:.9rem;padding-top:.9rem;
  border-top:1px solid var(--rule2)}
.foot__links{margin-top:.9rem}

.filmwrap{max-width:60rem;margin:1.4rem auto}
.filmwrap video{width:100%;border-radius:9px;border:1px solid var(--rule);background:#000}
figure{margin:1.6rem 0}
figcaption{font-family:var(--sans);font-size:.8rem;color:var(--ink3);margin-top:.5rem;max-width:46rem}
.creditlist{font-family:var(--sans);font-size:.82rem;columns:2;column-gap:2rem;max-width:56rem}
@media(max-width:640px){.creditlist{columns:1}}