:root{
  --paper:#f4e6b5;
  --paper2:#efd890;
  --ink:#1b1b1b;
  --muted:#3b3b3b;
  --hair:rgba(0,0,0,.20);
  --shadow:rgba(0,0,0,.16);
  --stamp:#6d0f0f;
  --max: 940px;
  --radius: 16px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  color:var(--ink);
  background:#151515;
  font: 16px/1.75 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  letter-spacing:.2px;
}

a{color:inherit; text-underline-offset:3px}
a:hover{filter:brightness(.95)}

.sheet{
  max-width: var(--max);
  margin: 26px auto 50px;
  padding: 26px 22px 44px;
  background: radial-gradient(1100px 760px at 22% 12%, var(--paper), var(--paper2));
  border: 1px solid rgba(0,0,0,.18);
  border-radius: var(--radius);
  box-shadow: 0 18px 70px var(--shadow);
  position: relative;
  overflow: hidden;
}

.sheet:before{
  content:"";
  position:absolute; inset:0;
  background:
    linear-gradient(180deg, rgba(0,0,0,.06), rgba(0,0,0,0) 45%),
    linear-gradient(135deg, rgba(0,0,0,.08), rgba(0,0,0,0) 18%),
    repeating-linear-gradient(90deg, rgba(0,0,0,.018), rgba(0,0,0,.018) 1px, transparent 1px, transparent 11px),
    repeating-linear-gradient(0deg, rgba(0,0,0,.012), rgba(0,0,0,.012) 1px, transparent 1px, transparent 13px),
    radial-gradient(420px 280px at 84% 16%, rgba(90,60,0,.11), transparent 60%),
    radial-gradient(360px 280px at 14% 78%, rgba(90,60,0,.09), transparent 62%),
    radial-gradient(220px 180px at 68% 86%, rgba(90,60,0,.06), transparent 64%);
  mix-blend-mode: multiply;
  opacity: .62;
  pointer-events:none;
}

header{
  position: relative;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--hair);
}

.topline{
  display:grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items:start;
}

.id{
  display:flex;
  flex-direction:column;
  gap:4px;
  min-width: 260px;
}
.id .site{font-weight:800; letter-spacing:.4px}
.id .who{color:var(--muted); font-size:13px}

.fileNo{
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
}

nav{
  display:flex; flex-wrap:wrap; gap:8px;
  font-size:13px;
  justify-content:flex-end;
  color:var(--muted);
}
nav a{
  color:inherit;
  text-decoration:none;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid rgba(0,0,0,.14);
  background: rgba(255,255,255,.14);
}
nav a:hover{filter:brightness(.98)}

.stampRow{
  margin-top: 10px;
  display:flex;
  justify-content:flex-end;
  gap:10px;
}
.stamp{
  display:inline-flex;
  align-items:center;
  padding: 10px 14px;
  border: 2px solid color-mix(in srgb, var(--stamp) 70%, transparent);
  color: color-mix(in srgb, var(--stamp) 78%, transparent);
  border-radius: 10px;
  font-weight: 900;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  background: rgba(255,255,255,.10);
  transform: rotate(4deg);
  box-shadow: 0 2px 0 rgba(0,0,0,.10) inset;
  user-select:none;
  position: relative;
}
.stamp:before{
  content:"";
  position:absolute; inset:-6px;
  border: 1px dashed rgba(109,15,15,.25);
  border-radius: 14px;
  transform: rotate(-1deg);
  pointer-events:none;
}

main{position:relative; padding-top: 18px}

h1,h2,h3{margin:0 0 10px; line-height:1.25}
h1{font-size: 40px; letter-spacing:-.7px}
h2{font-size: 18px; margin-top: 26px}
h3{font-size: 15px; margin-top: 18px}

.lede{color:var(--muted); max-width: 78ch}
.monoSmall{font-size:13px; color:var(--muted)}
.tiny{font-size:12px}
.sp10{height:10px}

/* Canonical definition (important for AI quoting) */
.canonicalDef{
  margin: 10px 0 10px;
  color: var(--muted);
  max-width: 86ch;
  font-size: 15px;
  line-height: 1.7;
  border-left: 3px solid rgba(0,0,0,.35);
  padding-left: 12px;
}

.grid{
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 12px;
}
.card{
  border: 1px solid rgba(0,0,0,.18);
  border-radius: 14px;
  padding: 14px;
  background: rgba(255,255,255,.20);
  position: relative;
}
.span6{grid-column: span 6}
.span12{grid-column: span 12}

.rule{border:0; border-top:1px dashed rgba(0,0,0,.28); margin: 22px 0}

.ctaRow{display:flex; flex-wrap:wrap; gap:10px; margin-top: 14px}
.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding: 9px 12px;
  border-radius: 999px;
  border: 1px solid rgba(0,0,0,.22);
  background: rgba(255,255,255,.16);
  text-decoration:none;
  font-size: 13px;
  cursor:pointer;
}
.btn:hover{filter:brightness(.98)}
.btn.primary{
  background: rgba(0,0,0,.84);
  color: #fff;
  border-color: rgba(0,0,0,.84);
}

.kbd{
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 9px;
  border: 1px solid rgba(0,0,0,.18);
  background: rgba(255,255,255,.20);
}

.sectionRow{
  display:grid;
  grid-template-columns: 1fr 220px;
  gap: 14px;
  align-items:start;
}
.note{
  border: 1px solid rgba(0,0,0,.16);
  border-radius: 14px;
  padding: 12px 12px;
  background: rgba(255,255,255,.14);
  color: var(--muted);
  font-size: 12px;
  position: relative;
}
.note:before{
  content:"NOTE";
  position:absolute;
  top: -10px;
  left: 12px;
  padding: 0 6px;
  background: color-mix(in srgb, var(--paper) 70%, transparent);
  color: rgba(0,0,0,.55);
  font-weight: 800;
  letter-spacing: 1px;
  font-size: 11px;
}
.note .kbd{
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 9px;
  border: 1px solid rgba(0,0,0,.16);
  background: rgba(255,255,255,.20);
  color: rgba(0,0,0,.65);
}

details{
  border: 1px solid rgba(0,0,0,.18);
  border-radius: 14px;
  padding: 12px 14px;
  background: rgba(255,255,255,.16);
}
summary{
  cursor:pointer;
  font-weight:900;
  list-style:none;
}
summary::-webkit-details-marker{display:none}
details > .content{margin-top: 10px; color: var(--muted)}
dl{margin: 8px 0 0}
dt{font-weight:900; margin-top: 10px}
dd{margin: 4px 0 0; color: var(--muted)}

.quote{
  padding-left: 14px;
  border-left: 3px solid rgba(0,0,0,.35);
  margin: 10px 0 0;
  color: var(--muted);
  font-style: italic;
}

/* Typewriter reveal */
.tw{position: relative; display: inline-block; max-width: 74ch;}
.tw > span{
  display:inline;
  background: linear-gradient(90deg, rgba(0,0,0,.86), rgba(0,0,0,.86));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  background-size: 0% 100%;
  background-repeat: no-repeat;
  transition: background-size 1.6s ease;
}
.tw.revealed > span{ background-size: 100% 100%; }
.caret{
  display:inline-block;
  width: 10px;
  border-left: 2px solid rgba(0,0,0,.55);
  transform: translateY(2px);
  margin-left: 6px;
  animation: blink 1.1s steps(2, start) infinite;
}
@keyframes blink { to { opacity: 0; } }

/* Sketch blocks */
.sketchFigure{margin: 18px 0 0;}
.sketch{
  border: 1px solid rgba(0,0,0,.18);
  border-radius: 14px;
  padding: 10px;
  background: rgba(255,255,255,.12);
}
.figcap{margin-top: 8px; font-size: 12px; color: var(--muted);}
.sketch svg{width:100%; height:auto; display:block;}
.pencil path, .pencil rect{
  fill: transparent;
  stroke: rgba(0,0,0,.62);
  stroke-width: 3.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.pencil text{ fill: rgba(0,0,0,.70); }
.label{ font-size: 22px; font-weight: 900; }
.smallLabel{ font-size: 16px; }
.noteLabel{ font-size: 16px; font-weight: 900; }
.hand text{
  fill: rgba(0,0,0,.58);
  font-size: 16px;
  font-style: italic;
}

/* Archive download bar */
.archiveBar{
  margin-top: 12px;
  margin-bottom: 12px;
  border: 1px solid rgba(0,0,0,.18);
  border-radius: 14px;
  padding: 12px 12px;
  background: rgba(255,255,255,.14);
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap: 12px;
}
.archiveTitle{
  font-weight: 900;
  letter-spacing: 1px;
  font-size: 12px;
  color: rgba(0,0,0,.65);
  text-transform: uppercase;
}
.archiveDoi{
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}
.archiveBtns{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:flex-end;
}

/* Whitepaper layout wrapper */
.whitepaperLayout{
  margin-top: 10px;
  display: grid;
  gap: 12px;
}
.whitepaperTop{
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 12px;
  align-items: stretch;
}
.whitepaperTop .archiveBar{
  margin: 0;
  height: 100%;
}
.academicRecordCard{
  background: rgba(255,255,255,.16);
  display:flex;
  flex-direction: column;
  justify-content: space-between;
}
.acrTitle{
  font-weight: 900;
  letter-spacing: 1px;
  font-size: 12px;
  text-transform: uppercase;
  color: rgba(0,0,0,.65);
}

/* Final alignment fix for Whitepaper controls + symmetry */
#whitepaper .archiveBar{
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: 14px;
}
#whitepaper .archiveLeft{
  min-width: 0;
}
#whitepaper .archiveBtns{
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: 10px;
  justify-content: flex-end;
}
#whitepaper .archiveBtns .btn{
  min-width: 110px;
  justify-content: center;
  text-align: center;
}
#whitepaper .whitepaperGrid .card{
  min-height: unset !important;
  display: block !important;
}
#whitepaper .whitepaperGrid .card p{
  margin: 10px 0 0 !important;
}
#whitepaper .whitepaperGrid .card .ctaRow{
  margin-top: 12px !important;
}

/* References list */
.refs{
  margin: 10px 0 0 18px;
  color: var(--muted);
}
.refs li{ margin: 10px 0; }
#citeBlock{ line-height: 1.7; }

.calloutCard{
  background: rgba(255,255,255,.16);
}

.miniList{
  margin: 10px 0 0 18px;
  color: var(--muted);
  font-size: 13px;
}
.miniList li{ margin: 8px 0; }

/* Author card + aged photo effect */
.authorCard{
  display:grid;
  grid-template-columns: 230px 1fr;
  gap: 14px;
  align-items:start;
  border: 1px solid rgba(0,0,0,.18);
  border-radius: 14px;
  padding: 14px;
  background: rgba(255,255,255,.18);
}
.authorPhotoWrap{
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,.18);
  background: rgba(255,255,255,.12);
}
.authorPhoto{
  width: 100%;
  height: auto;
  display:block;
  filter: sepia(.55) contrast(1.05) saturate(.85) brightness(.98);
  transform: scale(1.01);
}
.authorPhotoWrap:before{
  content:"";
  position:absolute; inset:0;
  background:
    radial-gradient(300px 200px at 30% 25%, rgba(255,255,255,.18), transparent 60%),
    radial-gradient(220px 160px at 80% 80%, rgba(90,60,0,.12), transparent 65%),
    repeating-linear-gradient(0deg, rgba(0,0,0,.03), rgba(0,0,0,.03) 1px, transparent 1px, transparent 8px);
  mix-blend-mode: multiply;
  opacity:.55;
  pointer-events:none;
}
.photoLabel{
  position:absolute;
  bottom: 10px;
  left: 10px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(0,0,0,.20);
  background: rgba(255,255,255,.22);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 1px;
  color: rgba(0,0,0,.65);
}
.authorBio{color: var(--muted);}

footer{
  margin-top: 34px;
  padding-top: 16px;
  border-top: 1px solid var(--hair);
  color:var(--muted);
  font-size: 13px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:space-between;
}

/* Responsive */
@media (max-width: 900px){
  .topline{grid-template-columns: 1fr}
  nav{justify-content:flex-start}
  .stampRow{justify-content:flex-start}
  h1{font-size: 34px}
  .span6{grid-column: span 12}
  .sectionRow{grid-template-columns: 1fr}
  .note{order:2}
  .authorCard{grid-template-columns: 1fr}
  .archiveBar{flex-direction:column}
  .archiveBtns{justify-content:flex-start}
  .whitepaperTop{grid-template-columns: 1fr}
}

@media (max-width: 700px){
  #whitepaper .archiveBar{ grid-template-columns: 1fr; }
  #whitepaper .archiveBtns{
    flex-direction: column;
    align-items: stretch;
  }
  #whitepaper .archiveBtns .btn{
    width: 100%;
    min-width: 0;
  }
}