/* Shared base for all three variations + canvas chrome */

:root {
  --bg: #0a0a0c;
  --bg-2: #111114;
  --fg: #e8e6df;
  --fg-dim: #8a8a85;
  --fg-mute: #555550;
  --line: #1f1f24;
  --line-2: #2a2a30;

  /* XKCD palette #4 */
  --teal: #029386;
  --sky: #75bbfd;
  --gold: #fac205;
  --red: #e50000;

  --accent: var(--teal);
  --accent-2: var(--gold);

  --mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, "Menlo", monospace;
  --sans: "Inter", "Helvetica Neue", system-ui, sans-serif;
  --serif: "Source Serif 4", "Iowan Old Style", Georgia, serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body { background: var(--bg); color: var(--fg); font-family: var(--sans); min-height: 100vh; }
.stage { min-height: 100vh; display: flex; flex-direction: column; }
.stage > .frame, .stage > .subp.frame { flex: 1; }

/* ---------- shared atoms ---------- */
.frame {
  width: 100%;
  min-height: 100vh;
  background: var(--bg);
  color: var(--fg);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.kbd {
  display: inline-block;
  padding: 1px 6px;
  border: 1px solid var(--line-2);
  border-bottom-width: 2px;
  border-radius: 4px;
  font: 11px/1.4 var(--mono);
  color: var(--fg-dim);
  background: var(--bg-2);
}
.dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  vertical-align: middle;
}
.pulse {
  animation: pulse 1.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}
.blink {
  animation: blink 1s steps(1) infinite;
}
@keyframes blink {
  50% { opacity: 0; }
}

/* ---------- Variation A: terminal ---------- */
.va {
  font-family: var(--mono);
  background:
    radial-gradient(ellipse at top right, rgba(2,147,134,.06), transparent 60%),
    radial-gradient(ellipse at bottom left, rgba(250,194,5,.04), transparent 50%),
    var(--bg);
}
.va .topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  color: var(--fg-dim);
}
.va .traffic { display: flex; gap: 8px; }
.va .traffic span {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--line-2);
}
.va .traffic span:nth-child(1) { background: var(--red); }
.va .traffic span:nth-child(2) { background: var(--gold); }
.va .traffic span:nth-child(3) { background: var(--teal); }
.va .topbar .title { color: var(--fg); }
.va .topbar .meta { margin-left: auto; display: flex; gap: 18px; }
.va .topbar .meta span b { color: var(--fg); font-weight: 500; }

.va .content { flex: 1; padding: 60px 80px; display: grid; grid-template-columns: 1.4fr 1fr; gap: 72px; min-height: 0; max-width: 1400px; margin: 0 auto; width: 100%; }
.va .ascii {
  font: 11px/1.05 var(--mono);
  color: var(--accent);
  white-space: pre;
  margin: 0 0 28px;
  letter-spacing: 0;
  text-shadow: 0 0 18px color-mix(in srgb, var(--accent) 50%, transparent);
}
.va .prompt {
  color: var(--fg-dim);
  font-size: 13px;
  margin-bottom: 10px;
}
.va .prompt b { color: var(--accent); font-weight: 500; }
.va .greet {
  font: 500 36px/1.25 var(--mono);
  color: var(--fg);
  margin: 0 0 20px;
  letter-spacing: -0.015em;
}
.va .greet em {
  font-style: normal;
  color: var(--accent);
}
.va .bio {
  font: 14px/1.65 var(--mono);
  color: var(--fg-dim);
  max-width: 56ch;
}
.va .bio b { color: var(--fg); font-weight: 500; }
.va .bio .tex {
  border-bottom: 1px dashed var(--accent);
  cursor: help;
  color: var(--fg);
  position: relative;
}
.va .bio .tex:hover .pop {
  display: block;
}
.va .bio .pop {
  display: none;
  position: absolute;
  bottom: 130%;
  left: 0;
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: 6px;
  padding: 12px 14px;
  font: 13px/1.5 var(--mono);
  color: var(--fg);
  white-space: nowrap;
  z-index: 5;
  box-shadow: 0 12px 32px rgba(0,0,0,.5);
}
.va .bio .pop::before {
  content: "TeX";
  position: absolute;
  top: -8px; left: 12px;
  background: var(--accent);
  color: #000;
  font-size: 9px;
  font-weight: 600;
  padding: 1px 5px;
  border-radius: 3px;
  letter-spacing: 0.08em;
}

.va .links {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-top: 32px;
}
.va .links a {
  color: var(--xc, var(--accent));
  text-decoration: none;
  font: 500 13px/1 var(--mono);
  padding: 9px 14px;
  border: 1.5px solid var(--xc, var(--accent));
  border-radius: 4px;
  transition: all .14s ease;
  cursor: pointer;
  background: transparent;
  letter-spacing: 0.02em;
}
.va .links a::before { content: "$ "; color: var(--xc, var(--accent)); opacity: 0.6; }
.va .links a:hover {
  background: var(--xc, var(--accent));
  color: #000;
  border-color: var(--xc, var(--accent));
  transform: translateY(-1px);
}
.va .links a:hover::before { color: #000; opacity: 1; }

.va .side {
  display: flex; flex-direction: column; gap: 22px;
  min-width: 0;
}
.va .card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px 18px;
  background: rgba(255,255,255,0.015);
}
.va .card h4 {
  font: 500 11px/1 var(--mono);
  color: var(--fg-dim);
  margin: 0 0 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}
.va .card h4 .num { color: var(--accent); }
.va .paper {
  display: block;
  font: 13px/1.5 var(--mono);
  color: var(--fg);
  padding: 10px 0;
  border-top: 1px dashed var(--line-2);
  text-decoration: none;
  cursor: pointer;
}
.va .paper:first-of-type { border-top: 0; padding-top: 0; }
.va .paper .tag {
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-right: 8px;
}
.va .paper .meta {
  color: var(--fg-mute);
  font-size: 11px;
  margin-top: 4px;
}
.va .paper:hover .title-link { color: var(--accent); }

.va .badge-new {
  display: inline-block;
  padding: 1px 6px;
  margin-right: 8px;
  font: 700 9px/1.4 var(--mono);
  letter-spacing: 0.12em;
  color: #000;
  background: var(--gold);
  border-radius: 3px;
  vertical-align: 1px;
}

.va .photo {
  width: 100%;
  max-width: 420px;
  align-self: center;
  aspect-ratio: 4/5;
  background: var(--bg-2);
  border: 1.5px solid var(--accent);
  border-radius: 6px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(0,0,0,.4), 0 12px 32px rgba(0,0,0,.4);
}
.va .photo img {
  width: 100% !important;
  height: 100% !important;
  object-fit: cover;
  object-position: center 28%;
  display: block;
  max-width: none;
}
.va .photo::after {
  content: "";
  position: absolute; inset: 0;
  background:
    repeating-linear-gradient(0deg, transparent 0, transparent 2px, rgba(0,0,0,.10) 2px, rgba(0,0,0,.10) 3px);
  mix-blend-mode: multiply;
  pointer-events: none;
}
.va .photo .meta {
  position: absolute; bottom: 8px; left: 10px; right: 10px;
  font: 10px/1.3 var(--mono);
  color: var(--accent);
  display: flex; justify-content: space-between;
  text-shadow: 0 0 4px #000;
}

.va .statusbar {
  display: flex; gap: 22px;
  padding: 10px 22px;
  border-top: 1px solid var(--line);
  font: 11px/1 var(--mono);
  color: var(--fg-dim);
}
.va .statusbar b { color: var(--accent); font-weight: 500; }
.va .statusbar .right { margin-left: auto; }

/* ---------- Variation B: lab notebook ---------- */
.vb {
  background: var(--bg);
  font-family: var(--sans);
}
.vb .nav {
  display: flex; align-items: center; gap: 22px;
  padding: 18px 56px;
  border-bottom: 1px solid var(--line);
}
.vb .nav .brand {
  font: 600 14px/1 var(--mono);
  color: var(--fg);
  display: flex; align-items: center; gap: 10px;
}
.vb .nav .brand .sigil {
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px; border-radius: 4px;
  background: var(--accent); color: #000;
  font: 700 12px/1 var(--mono);
}
.vb .nav .links { display: flex; gap: 4px; margin-left: auto; }
.vb .nav .links a {
  text-decoration: none;
  color: var(--fg-dim);
  font: 13px/1 var(--sans);
  padding: 6px 12px;
  border-radius: 5px;
  transition: all .15s;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}
.vb .nav .links a:hover { color: #000; background: var(--xc, var(--bg-2)); }
.vb .nav .links a.cur { color: var(--accent); }
.vb .nav .links a.xc {
  border-bottom-color: var(--xc);
}
.vb .nav .links a.xc:hover { background: var(--xc); border-bottom-color: var(--xc); }
.vb .nav .cmd {
  display: inline-flex; align-items: center; gap: 8px;
  margin-left: 16px;
  padding: 6px 10px;
  border: 1px solid var(--line-2);
  border-radius: 6px;
  color: var(--fg-mute);
  font-size: 12px;
  cursor: pointer;
  transition: all .15s;
}
.vb .nav .cmd:hover { border-color: var(--accent); color: var(--accent); }

.vb .hero {
  padding: 56px 56px 42px;
  display: grid; grid-template-columns: 1.6fr 1fr;
  gap: 56px;
  border-bottom: 1px solid var(--line);
}
.vb .hero .meta {
  font: 500 11px/1 var(--mono);
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.vb .hero h1 {
  font: 400 56px/1.04 var(--serif);
  letter-spacing: -0.02em;
  color: var(--fg);
  margin: 0 0 24px;
  text-wrap: pretty;
}
.vb .hero h1 i { font-style: italic; color: var(--accent); font-family: var(--serif); }
.vb .hero p {
  font: 400 16px/1.6 var(--sans);
  color: var(--fg-dim);
  max-width: 56ch;
  margin: 0 0 18px;
}
.vb .hero p .tex {
  border-bottom: 1px dashed var(--accent);
  cursor: help;
  color: var(--fg);
  position: relative;
}
.vb .hero p .tex:hover .pop { display: block; }
.vb .hero p .pop {
  display: none;
  position: absolute;
  bottom: 130%; left: 0;
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: 6px;
  padding: 12px 14px;
  font: 13px/1.5 var(--mono);
  color: var(--fg);
  white-space: nowrap;
  z-index: 5;
  box-shadow: 0 12px 32px rgba(0,0,0,.5);
}
.vb .hero p .pop::before {
  content: "TeX";
  position: absolute;
  top: -8px; left: 12px;
  background: var(--accent);
  color: #000;
  font-size: 9px;
  font-weight: 600;
  padding: 1px 5px;
  border-radius: 3px;
  letter-spacing: 0.08em;
}

.vb .portrait {
  position: relative;
  align-self: start;
}
.vb .portrait .img {
  width: 100%;
  aspect-ratio: 4/5;
  background: var(--bg-2);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}
.vb .portrait .img img {
  width: 100%; height: 100%; object-fit: cover;
  filter: grayscale(100%) contrast(1.1);
}
.vb .portrait .img::after {
  content: "";
  position: absolute; inset: 0;
  background: var(--accent);
  mix-blend-mode: screen;
  opacity: 0.18;
}
.vb .portrait .caption {
  display: flex; justify-content: space-between;
  font: 10px/1.4 var(--mono);
  color: var(--fg-mute);
  margin-top: 8px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.vb .portrait .caption b { color: var(--accent); font-weight: 500; }

.vb .three {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 0;
  flex: 1;
  min-height: 0;
}
.vb .three > div { padding: 28px 28px; border-right: 1px solid var(--line); overflow: hidden; }
.vb .three > div:last-child { border-right: 0; }
.vb .three h3 {
  font: 500 11px/1 var(--mono);
  color: var(--fg-mute);
  margin: 0 0 18px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex; align-items: center; gap: 8px;
}
.vb .three h3 .num { color: var(--accent); }
.vb .three .row {
  display: block;
  text-decoration: none;
  color: inherit;
  padding: 12px 0;
  border-top: 1px solid var(--line);
  font: 14px/1.4 var(--sans);
  cursor: pointer;
}
.vb .three .row:first-of-type { border-top: 0; padding-top: 0; }
.vb .three .row .name { color: var(--fg); }
.vb .three .row .sub {
  font-size: 11px;
  color: var(--fg-mute);
  font-family: var(--mono);
  margin-top: 4px;
  letter-spacing: 0.02em;
}
.vb .three .row:hover .name { color: var(--accent); }
.vb .three .row .pill {
  display: inline-block;
  font: 9px/1 var(--mono);
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 2px 5px;
  border-radius: 3px;
  margin-right: 6px;
  vertical-align: middle;
  letter-spacing: 0.06em;
}

.vb .chartcard { background: var(--bg-2); border-radius: 6px; padding: 14px; margin-bottom: 12px; }
.vb .chartcard h5 {
  margin: 0 0 6px;
  font: 600 11px/1 var(--mono);
  color: var(--fg);
  letter-spacing: 0.04em;
  display: flex; justify-content: space-between;
}
.vb .chartcard h5 b { color: var(--accent); font-weight: 600; }
.vb .chartcard .axis {
  font: 9px/1 var(--mono);
  color: var(--fg-mute);
  display: flex; justify-content: space-between;
  margin-top: 4px;
}

.vb .footer {
  border-top: 1px solid var(--line);
  padding: 14px 56px;
  font: 11px/1 var(--mono);
  color: var(--fg-mute);
  display: flex; gap: 24px;
}
.vb .footer .right { margin-left: auto; display: flex; gap: 18px; }

/* ---------- Variation C: brutalist-tech ---------- */
.vc {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  display: grid;
  grid-template-rows: auto 1fr auto;
}
.vc .head {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 18px 32px;
  border-bottom: 2px solid var(--accent);
  font: 500 12px/1 var(--mono);
  letter-spacing: 0.06em;
  color: var(--fg);
}
.vc .head .l { text-transform: uppercase; }
.vc .head .l b { color: var(--accent); }
.vc .head .c {
  font: 600 12px/1 var(--mono);
  letter-spacing: 0.18em;
  color: var(--fg);
  text-transform: uppercase;
}
.vc .head .r { text-align: right; color: var(--fg-dim); display: flex; gap: 16px; justify-content: flex-end; }
.vc .head .r b { color: var(--fg); font-weight: 500; }

.vc .grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-template-rows: auto auto 1fr;
  gap: 0;
  height: 100%;
  min-height: 0;
}
.vc .grid > div { border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 22px 24px; min-width: 0; overflow: hidden; }

.vc .name {
  grid-column: 1 / span 8;
  grid-row: 1;
  padding: 40px 36px 32px !important;
  border-bottom: 1px solid var(--line);
}
.vc .name .label {
  font: 500 11px/1 var(--mono);
  color: var(--fg-mute);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.vc .name h1 {
  font: 700 96px/0.92 var(--sans);
  letter-spacing: -0.045em;
  margin: 0;
  text-wrap: balance;
}
.vc .name h1 span { color: var(--accent); }
.vc .name .sub {
  margin-top: 18px;
  font: 500 14px/1.4 var(--mono);
  color: var(--fg-dim);
  letter-spacing: 0.02em;
}

.vc .photo {
  grid-column: 9 / span 4;
  grid-row: 1;
  padding: 0 !important;
  position: relative;
  border-right: 0 !important;
  overflow: hidden;
}
.vc .photo img {
  width: 100%; height: 100%; object-fit: cover;
  filter: grayscale(100%) contrast(1.05);
}
.vc .photo::after {
  content: "";
  position: absolute; inset: 0;
  background: var(--accent);
  mix-blend-mode: multiply;
  opacity: 0.55;
}
.vc .photo .stamp {
  position: absolute;
  top: 18px; left: 18px;
  font: 600 10px/1.3 var(--mono);
  color: #000;
  background: var(--accent);
  padding: 4px 7px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  z-index: 2;
}

.vc .about {
  grid-column: 1 / span 5;
  grid-row: 2 / span 2;
}
.vc .focus { grid-column: 6 / span 4; grid-row: 2 / span 2; }
.vc .papers { grid-column: 10 / span 3; grid-row: 2 / span 2; border-right: 0 !important; }

.vc h3 {
  font: 600 10px/1 var(--mono);
  color: var(--fg-mute);
  margin: 0 0 16px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.vc h3 b { color: var(--accent); }

.vc .about p {
  font: 400 18px/1.55 var(--sans);
  color: var(--fg);
  margin: 0 0 16px;
  text-wrap: pretty;
}
.vc .about p .tex {
  background: rgba(2,147,134,0.18);
  color: var(--accent);
  padding: 1px 4px;
  cursor: help;
  position: relative;
  font-weight: 500;
}
.vc .about p .tex:hover .pop { display: block; }
.vc .about p .pop {
  display: none;
  position: absolute;
  bottom: 130%; left: 0;
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: 0;
  padding: 12px 14px;
  font: 13px/1.5 var(--mono);
  color: var(--fg);
  white-space: nowrap;
  z-index: 5;
  box-shadow: 0 12px 32px rgba(0,0,0,.5);
}
.vc .about p .pop::before {
  content: "TeX";
  position: absolute; top: -8px; left: 0;
  background: var(--accent); color: #000;
  font: 600 9px/1.4 var(--mono);
  padding: 2px 5px;
  letter-spacing: 0.08em;
}
.vc .about ul { list-style: none; padding: 0; margin: 22px 0 0; }
.vc .about li {
  font: 400 13px/1.4 var(--mono);
  color: var(--fg-dim);
  padding: 8px 0;
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 14px;
}
.vc .about li b { color: var(--fg); font-weight: 500; }
.vc .about li .yr { color: var(--accent); }

.vc .focus .item {
  font: 500 14px/1.4 var(--sans);
  color: var(--fg);
  padding: 14px 0;
  border-top: 1px solid var(--line);
  display: flex; align-items: baseline; gap: 12px;
}
.vc .focus .item:first-of-type { border-top: 0; padding-top: 0; }
.vc .focus .item .n {
  font: 500 11px/1 var(--mono);
  color: var(--accent);
  letter-spacing: 0.1em;
}
.vc .focus .item small {
  display: block;
  font: 400 11px/1.5 var(--mono);
  color: var(--fg-mute);
  margin-top: 4px;
  letter-spacing: 0.02em;
}

.vc .papers .row {
  display: block;
  text-decoration: none;
  color: var(--fg);
  padding: 12px 0;
  border-top: 1px solid var(--line);
  font: 13px/1.45 var(--sans);
}
.vc .papers .row:first-of-type { border-top: 0; padding-top: 0; }
.vc .papers .row .yr {
  font: 500 10px/1 var(--mono);
  color: var(--accent);
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 4px;
}
.vc .papers .row:hover .nm { color: var(--accent); }

.vc .foot {
  display: flex; gap: 22px;
  padding: 14px 32px;
  border-top: 2px solid var(--accent);
  font: 500 11px/1 var(--mono);
  color: var(--fg-dim);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.vc .foot a {
  color: var(--fg);
  text-decoration: none;
  cursor: pointer;
  padding: 4px 10px;
  border-radius: 0;
  transition: all .15s;
  background: var(--xc, transparent);
}
.vc .foot a[data-xc] { color: #000; font-weight: 600; }
.vc .foot a[data-xc]:hover { filter: brightness(1.1); }
.vc .foot a:not([data-xc]):hover { color: var(--accent); }
.vc .foot .right { margin-left: auto; display: flex; gap: 22px; align-items: center; }
.vc .foot .right span { background: transparent; padding: 0; }

/* ---------- Command palette overlay ---------- */
.cmdp-back {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 12vh;
  z-index: 100;
  backdrop-filter: blur(4px);
}
.cmdp-back.open { display: flex; }
.cmdp {
  width: min(560px, 92vw);
  background: var(--bg-2);
  border: 1px solid var(--line-2);
  border-radius: 10px;
  box-shadow: 0 24px 80px rgba(0,0,0,.6);
  overflow: hidden;
  font-family: var(--mono);
}
.cmdp input {
  width: 100%;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  padding: 18px 22px;
  color: var(--fg);
  font: 16px/1 var(--mono);
  outline: none;
}
.cmdp input::placeholder { color: var(--fg-mute); }
.cmdp .res { max-height: 50vh; overflow: auto; padding: 6px; }
.cmdp .item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px;
  border-radius: 6px;
  font: 13px/1.3 var(--mono);
  color: var(--fg);
  cursor: pointer;
}
.cmdp .item .ic {
  width: 22px; text-align: center; color: var(--accent);
}
.cmdp .item .desc { color: var(--fg-mute); margin-left: auto; font-size: 11px; }
.cmdp .item.sel { background: rgba(2,147,134,0.15); }
.cmdp .item.sel .desc { color: var(--accent); }
.cmdp .foot {
  display: flex; gap: 16px;
  padding: 10px 16px;
  border-top: 1px solid var(--line);
  font: 11px/1 var(--mono);
  color: var(--fg-mute);
}

/* sub-page mocks */
.subp { padding: 56px 80px; overflow: auto; min-height: 100vh; max-width: 1280px; margin: 0 auto; width: 100%; }
.subp .policy-note {
  margin-top: 12px;
  padding: 8px 12px;
  border-left: 2px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 5%, transparent);
  font: 12px/1.55 var(--sans);
  color: var(--fg-dim);
  display: flex;
  gap: 12px;
  align-items: baseline;
  border-radius: 0 4px 4px 0;
}
.subp .policy-note .lbl {
  font: 500 10px/1 var(--mono);
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  flex-shrink: 0;
  padding-top: 2px;
}
.subp .policy-note .bd b { color: var(--fg); font-weight: 500; }
.subp .au .coa {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px dotted color-mix(in srgb, var(--accent) 60%, transparent);
  transition: all .14s;
}
.subp .au .coa:hover {
  color: #fff;
  background: var(--accent);
  border-bottom-color: var(--accent);
  padding: 0 3px;
  margin: 0 -3px;
}
.subp .au .coa-plain { color: var(--fg-dim); }
.subp .footnote {
  margin-top: 22px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-2);
  font: 12px/1.55 var(--sans);
  color: var(--fg-mute);
  font-style: italic;
}
.subp .footnote .mark {
  color: var(--accent);
  font-weight: 600;
  font-style: normal;
  margin-right: 4px;
}
.subp .pp .ttl {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .14s, color .14s;
}
.subp .pp .ttl:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.subp .pp .links a[href] {
  cursor: pointer;
}
.subp .policy-note .bd a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px dotted color-mix(in srgb, var(--accent) 60%, transparent);
}
.subp .policy-note .bd a:hover {
  color: #fff;
  background: var(--accent);
  border-bottom-color: var(--accent);
}
.subp h2 {
  font: 500 32px/1.1 var(--serif);
  margin: 0 0 4px;
  color: var(--fg);
}
.subp .backbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.subp .back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: 500 11px/1 var(--mono);
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 7px 11px;
  border: 1.5px solid var(--accent);
  border-radius: 5px;
  cursor: pointer;
  background: transparent;
  transition: all 0.14s ease;
}
.subp .back:hover {
  color: #000;
  background: var(--accent);
  border-color: var(--accent);
  transform: translateY(-1px);
}
.subp .back .arr {
  font-size: 13px;
  line-height: 1;
}
.subp .crumb {
  font: 11px/1 var(--mono);
  color: var(--fg-mute);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.subp .crumb b { color: var(--accent); }
.subp .lede {
  color: var(--fg-dim);
  font: 14px/1.55 var(--sans);
  max-width: 64ch;
  margin: 0 0 28px;
}
.subp section { margin-bottom: 32px; }
.subp h4 {
  font: 500 11px/1 var(--mono);
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 12px;
}
.subp .pp {
  display: block;
  text-decoration: none;
  color: var(--fg);
  padding: 14px 0;
  border-top: 1px solid var(--line);
  font: 14px/1.5 var(--sans);
}
.subp .pp:first-of-type { border-top: 0; padding-top: 0; }
.subp .pp .yr {
  font: 500 10px/1 var(--mono);
  color: var(--accent);
  letter-spacing: 0.06em;
  margin-right: 10px;
}
.subp .pp .au {
  font: 12px/1.4 var(--mono);
  color: var(--fg-mute);
  margin-top: 4px;
}
.subp .pp .links a {
  font: 11px/1 var(--mono);
  color: var(--accent);
  text-decoration: none;
  padding: 2px 0;
  margin-right: 14px;
  border-bottom: 1px dashed color-mix(in srgb, var(--accent) 50%, transparent);
}
.subp .pp .links a:hover { color: #fff; background: var(--accent); border-bottom-color: var(--accent); padding: 2px 4px; }
.subp .course .name a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px dashed color-mix(in srgb, var(--accent) 50%, transparent);
  transition: all .14s;
}
.subp .course .name a:hover {
  color: #fff;
  background: var(--accent);
  border-bottom-color: var(--accent);
}

.subp .course {
  display: grid;
  grid-template-columns: 90px 1fr auto;
  gap: 18px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  align-items: baseline;
}
.subp .course:first-of-type { border-top: 0; }
.subp .course .code {
  font: 600 13px/1.35 var(--mono);
  color: var(--accent);
  white-space: pre-line;
  letter-spacing: 0.04em;
}
.subp .course .code .hemi-mark {
  color: var(--accent);
  font-weight: 700;
  font-size: 0.65em;
  margin-left: 2px;
  vertical-align: super;
  line-height: 0;
}
.subp .course .name { font: 500 14px/1.4 var(--sans); color: var(--fg); }
.subp .course .name small {
  display: block;
  font: 400 11px/1.4 var(--mono);
  color: var(--fg-mute);
  margin-top: 3px;
}
.subp .course .where {
  font: 11px/1 var(--mono);
  color: var(--fg-dim);
  letter-spacing: 0.04em;
}

/* density */
[data-density="compact"] .va .content { padding: 24px 36px; gap: 36px; }
[data-density="compact"] .vb .hero { padding: 36px 40px 28px; }
[data-density="compact"] .vc .name { padding: 28px 28px 22px !important; }
[data-density="compact"] .vc .name h1 { font-size: 78px; }

[data-density="comfy"] .va .content { padding: 56px 76px; gap: 76px; }
[data-density="comfy"] .vb .hero { padding: 80px 80px 60px; }
[data-density="comfy"] .vb .hero h1 { font-size: 64px; }

/* background pattern variants applied to .frame */
[data-pattern="grid"] .frame::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  opacity: 0.6;
  z-index: 0;
}
[data-pattern="dots"] .frame::before {
  content: "";
  position: absolute; inset: 0;
  background-image: radial-gradient(var(--line-2) 1.2px, transparent 1.2px);
  background-size: 22px 22px;
  pointer-events: none;
  opacity: 0.7;
  z-index: 0;
}
[data-pattern="scan"] .frame::before {
  content: "";
  position: absolute; inset: 0;
  background:
    repeating-linear-gradient(0deg, transparent 0, transparent 3px, rgba(255,255,255,.018) 3px, rgba(255,255,255,.018) 4px);
  pointer-events: none;
  z-index: 0;
}
.frame > * { position: relative; z-index: 1; }