/* =========================================================
   Pulmonary Mechanics — deck design system
   One design pixel = var(--px) = 1/1920 of a 16:9 stage.
   ========================================================= */
:root {
  --px: min(calc(100vw / 1920), calc(100vh / 1080));
  --stage-w: calc(var(--px) * 1920);
  --stage-h: calc(var(--px) * 1080);

  --bg: #000000;
  --bg-2: #0b0b0e;
  --card: rgba(255, 255, 255, 0.055);
  --card-2: rgba(255, 255, 255, 0.09);
  --card-solid: #141418;
  --stroke: rgba(255, 255, 255, 0.12);
  --stroke-2: rgba(255, 255, 255, 0.22);
  --text: #f5f5f7;
  --text-2: #a1a1a6;
  --text-3: #6e6e73;
  --grid: rgba(255, 255, 255, 0.08);

  --blue: #2997ff;
  --cyan: #64d2ff;
  --green: #30d158;
  --pink: #ff375f;
  --orange: #ff9f0a;
  --purple: #bf5af2;
  --yellow: #ffd60a;
  --red: #ff453a;
  --tissue: #ff8fa3;

  --glass: rgba(22, 22, 26, 0.74);
  --shadow: 0 calc(var(--px) * 30) calc(var(--px) * 80) rgba(0, 0, 0, 0.55);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --font: "SF Pro Display", "SF Pro Text", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;

  --fs-hero: calc(var(--px) * 150);
  --fs-h1: calc(var(--px) * 84);
  --fs-h2: calc(var(--px) * 58);
  --fs-h3: calc(var(--px) * 44);
  --fs-lead: calc(var(--px) * 40);
  --fs-body: calc(var(--px) * 36);
  --fs-small: calc(var(--px) * 29);
  --fs-micro: calc(var(--px) * 23);
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #fbfbfd;
  --bg-2: #f2f2f5;
  --card: rgba(0, 0, 0, 0.04);
  --card-2: rgba(0, 0, 0, 0.07);
  --card-solid: #ffffff;
  --stroke: rgba(0, 0, 0, 0.1);
  --stroke-2: rgba(0, 0, 0, 0.2);
  --text: #1d1d1f;
  --text-2: #6e6e73;
  --text-3: #8e8e93;
  --grid: rgba(0, 0, 0, 0.08);
  --blue: #0071e3;
  --cyan: #0a84c6;
  --green: #1f9d48;
  --pink: #e0254e;
  --orange: #d97a00;
  --purple: #9b3fd1;
  --yellow: #c9a400;
  --red: #d70015;
  --tissue: #e8657d;
  --glass: rgba(255, 255, 255, 0.84);
  --shadow: 0 calc(var(--px) * 30) calc(var(--px) * 80) rgba(0, 0, 0, 0.16);
  color-scheme: light;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: var(--fs-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow: hidden;
  transition: background-color 0.6s var(--ease);
}
body.hide-cursor, body.hide-cursor * { cursor: none !important; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
sub, sup { font-size: 0.62em; line-height: 0; }
sub { vertical-align: -0.22em; margin-left: 0.04em; }
.num { font-variant-numeric: tabular-nums; }

/* ---------- stage ---------- */
#viewport { position: fixed; inset: 0; display: grid; place-items: center; }
#stage { position: relative; width: var(--stage-w); height: var(--stage-h); overflow: hidden; }

.slide {
  position: absolute;
  inset: 0;
  padding: calc(var(--px) * 92) calc(var(--px) * 116) calc(var(--px) * 104);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: scale(1.015);
  filter: blur(calc(var(--px) * 10));
  transition: opacity 0.7s var(--ease), transform 0.9s var(--ease-out), filter 0.7s var(--ease), visibility 0s linear 0.9s;
}
.slide.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: none;
  filter: none;
  transition: opacity 0.75s var(--ease) 0.12s, transform 1s var(--ease-out) 0.12s, filter 0.75s var(--ease) 0.12s, visibility 0s;
}
.slide.leaving-back { transform: scale(1.015); }
.slide.leaving-fwd { transform: scale(0.985); }

.slide::before {
  content: "";
  position: absolute;
  inset: -20%;
  pointer-events: none;
  background: radial-gradient(40% 46% at var(--gx, 68%) var(--gy, 52%), color-mix(in srgb, var(--glow, var(--blue)) 16%, transparent), transparent 70%);
  z-index: 0;
}
:root[data-theme="light"] .slide::before { opacity: 0.5; }
.slide > * { position: relative; z-index: 1; }

/* ---------- typography ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--px) * 14);
  font-size: var(--fs-micro);
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent, var(--blue));
  margin-bottom: calc(var(--px) * 18);
}
.eyebrow .dot { width: calc(var(--px) * 10); height: calc(var(--px) * 10); border-radius: 50%; background: currentColor; box-shadow: 0 0 calc(var(--px) * 16) currentColor; }
.title { font-size: var(--fs-h1); font-weight: 700; letter-spacing: -0.028em; line-height: 1.04; }
.title.sm { font-size: var(--fs-h2); letter-spacing: -0.022em; }
.subtitle { font-size: var(--fs-lead); color: var(--text-2); font-weight: 500; letter-spacing: -0.01em; line-height: 1.25; margin-top: calc(var(--px) * 18); }
.grad { background: linear-gradient(100deg, var(--g1, var(--blue)), var(--g2, var(--cyan))); -webkit-background-clip: text; background-clip: text; color: transparent; }
b, strong { font-weight: 650; color: var(--text); }
.c-blue { color: var(--blue); } .c-cyan { color: var(--cyan); } .c-green { color: var(--green); }
.c-pink { color: var(--pink); } .c-orange { color: var(--orange); } .c-purple { color: var(--purple); }
.c-yellow { color: var(--yellow); } .c-red { color: var(--red); } .c-dim { color: var(--text-2); } .c-tissue { color: var(--tissue); }
.c-dim3 { color: var(--text-3); }

.points { list-style: none; display: grid; gap: calc(var(--px) * 30); margin-top: calc(var(--px) * 46); }
.points li {
  position: relative;
  padding-left: calc(var(--px) * 34);
  font-size: var(--fs-body);
  font-weight: 500;
  line-height: 1.22;
  color: var(--text-2);
  letter-spacing: -0.008em;
}
.points li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.16em; bottom: 0.16em;
  width: calc(var(--px) * 6);
  border-radius: 99px;
  background: var(--bar, var(--accent, var(--blue)));
}
.points li b { color: var(--text); }
.points.tight { gap: calc(var(--px) * 22); }
.points.lg li { font-size: var(--fs-lead); }

.formula {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--px) * 18);
  font-size: var(--fs-h3);
  font-weight: 650;
  letter-spacing: -0.01em;
  padding: calc(var(--px) * 18) calc(var(--px) * 34);
  border-radius: calc(var(--px) * 26);
  background: var(--card);
  border: 1px solid var(--stroke);
  white-space: nowrap;
}
.frac { display: inline-grid; text-align: center; line-height: 1.12; }
.frac > span:first-child { border-bottom: calc(var(--px) * 4) solid currentColor; padding: 0 calc(var(--px) * 10) calc(var(--px) * 6); }
.frac > span:last-child { padding-top: calc(var(--px) * 6); }

/* ---------- layout ---------- */
.split { display: grid; grid-template-columns: calc(var(--px) * 640) 1fr; gap: calc(var(--px) * 56); height: 100%; align-items: center; }
.split.wide-left { grid-template-columns: calc(var(--px) * 760) 1fr; }
.split.narrow-left { grid-template-columns: calc(var(--px) * 560) 1fr; }
.visual { position: relative; height: 100%; min-height: 0; }
.mount { position: absolute; inset: 0; }
.stack { display: flex; flex-direction: column; height: 100%; }
.stack > .grow { flex: 1; min-height: 0; position: relative; }
.center { display: grid; place-items: center; text-align: center; }
.row { display: flex; gap: calc(var(--px) * 22); align-items: center; flex-wrap: wrap; }
.gap-s { gap: calc(var(--px) * 12); }
.mt-s { margin-top: calc(var(--px) * 24); } .mt-m { margin-top: calc(var(--px) * 44); } .mt-l { margin-top: calc(var(--px) * 70); }

/* ---------- cards & controls ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--stroke);
  border-radius: calc(var(--px) * 34);
  padding: calc(var(--px) * 40);
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease), transform 0.5s var(--ease-out), box-shadow 0.5s var(--ease);
}
.card.hoverable:hover { background: var(--card-2); border-color: var(--stroke-2); transform: translateY(calc(var(--px) * -6)); }
.seg { display: inline-flex; gap: calc(var(--px) * 6); padding: calc(var(--px) * 7); border-radius: 999px; background: var(--card); border: 1px solid var(--stroke); }
.seg button {
  padding: calc(var(--px) * 14) calc(var(--px) * 30);
  border-radius: 999px;
  font-size: var(--fs-small);
  font-weight: 600;
  color: var(--text-2);
  transition: background 0.35s var(--ease), color 0.35s var(--ease), box-shadow 0.35s var(--ease);
  white-space: nowrap;
}
.seg button:hover { color: var(--text); }
.seg button.on { background: var(--text); color: var(--bg); }
.seg button.on[data-c] { background: var(--c); color: #fff; }

.btn {
  display: inline-flex; align-items: center; gap: calc(var(--px) * 14);
  padding: calc(var(--px) * 16) calc(var(--px) * 34);
  border-radius: 999px; background: var(--blue); color: #fff;
  font-size: var(--fs-small); font-weight: 650;
  transition: transform 0.3s var(--ease-out), filter 0.3s var(--ease), opacity .3s;
}
.btn:hover { transform: scale(1.04); filter: brightness(1.1); }
.btn.ghost { background: var(--card-2); color: var(--text); border: 1px solid var(--stroke); }
.btn svg { width: 1.05em; height: 1.05em; }

.chip {
  display: inline-flex; align-items: center; gap: calc(var(--px) * 10);
  padding: calc(var(--px) * 10) calc(var(--px) * 22);
  border-radius: 999px; background: var(--card); border: 1px solid var(--stroke);
  font-size: var(--fs-micro); font-weight: 600; color: var(--text-2); white-space: nowrap;
}
.chip i { width: calc(var(--px) * 14); height: calc(var(--px) * 14); border-radius: 50%; background: var(--c, var(--blue)); display: inline-block; }

.slider { display: grid; gap: calc(var(--px) * 8); width: 100%; }
.slider label { display: flex; justify-content: space-between; align-items: baseline; font-size: var(--fs-small); font-weight: 600; color: var(--text-2); }
.slider label output { color: var(--text); font-variant-numeric: tabular-nums; }
input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: calc(var(--px) * 44); background: transparent; cursor: pointer; --c: var(--blue); }
input[type="range"]::-webkit-slider-runnable-track { height: calc(var(--px) * 10); border-radius: 99px; background: linear-gradient(90deg, var(--c) var(--fill, 50%), var(--card-2) var(--fill, 50%)); }
input[type="range"]::-moz-range-track { height: calc(var(--px) * 10); border-radius: 99px; background: var(--card-2); }
input[type="range"]::-moz-range-progress { height: calc(var(--px) * 10); border-radius: 99px; background: var(--c); }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: calc(var(--px) * 40); height: calc(var(--px) * 40); margin-top: calc(var(--px) * -15); border-radius: 50%; background: #fff; box-shadow: 0 calc(var(--px) * 4) calc(var(--px) * 18) rgba(0, 0, 0, 0.45), 0 0 0 calc(var(--px) * 3) var(--c); }
input[type="range"]::-moz-range-thumb { width: calc(var(--px) * 40); height: calc(var(--px) * 40); border-radius: 50%; background: #fff; border: calc(var(--px) * 3) solid var(--c); }

/* "+" more-info button */
.more {
  display: inline-grid; place-items: center;
  width: calc(var(--px) * 46); height: calc(var(--px) * 46);
  border-radius: 50%; background: var(--card-2); border: 1px solid var(--stroke-2); color: var(--text);
  vertical-align: middle; margin-left: calc(var(--px) * 12);
  transition: transform 0.4s var(--ease-out), background 0.3s var(--ease), color .3s;
  flex: none;
}
.more::before { content: ""; width: 44%; height: 44%; background:
  linear-gradient(currentColor, currentColor) center / 100% calc(var(--px) * 4) no-repeat,
  linear-gradient(currentColor, currentColor) center / calc(var(--px) * 4) 100% no-repeat; }
.more:hover, .more.open { transform: rotate(90deg) scale(1.08); background: var(--blue); color: #fff; }
[data-pop] { cursor: help; }
.term { border-bottom: calc(var(--px) * 3) dotted color-mix(in srgb, currentColor 55%, transparent); }

/* ---------- popover ---------- */
#popover {
  position: fixed; z-index: 60;
  width: calc(var(--px) * 660); max-width: 92vw;
  padding: calc(var(--px) * 34) calc(var(--px) * 38) calc(var(--px) * 30);
  border-radius: calc(var(--px) * 30);
  background: var(--glass); border: 1px solid var(--stroke-2); box-shadow: var(--shadow);
  backdrop-filter: blur(calc(var(--px) * 30)) saturate(1.6); -webkit-backdrop-filter: blur(calc(var(--px) * 30)) saturate(1.6);
  opacity: 0; transform: translateY(calc(var(--px) * 12)) scale(0.97);
  transform-origin: var(--ox, 50%) var(--oy, 0%);
  pointer-events: none;
  transition: opacity 0.28s var(--ease), transform 0.4s var(--ease-out);
}
#popover.show { opacity: 1; transform: none; pointer-events: auto; }
#popover .p-kicker { font-size: var(--fs-micro); font-weight: 650; letter-spacing: 0.12em; text-transform: uppercase; color: var(--pc, var(--blue)); margin-bottom: calc(var(--px) * 10); }
#popover h4 { font-size: calc(var(--px) * 40); font-weight: 700; letter-spacing: -0.02em; line-height: 1.1; margin-bottom: calc(var(--px) * 18); }
#popover .p-body { display: grid; gap: calc(var(--px) * 14); }
#popover .p-row { display: grid; grid-template-columns: calc(var(--px) * 46) 1fr; gap: calc(var(--px) * 16); align-items: start; font-size: calc(var(--px) * 28); line-height: 1.3; color: var(--text-2); }
#popover .p-row b { color: var(--text); }
#popover .p-ico { width: calc(var(--px) * 46); height: calc(var(--px) * 46); border-radius: calc(var(--px) * 13); display: grid; place-items: center; background: color-mix(in srgb, var(--pc, var(--blue)) 18%, transparent); color: var(--pc, var(--blue)); font-weight: 750; font-size: calc(var(--px) * 22); }
#popover .p-formula { font-size: calc(var(--px) * 34); font-weight: 650; color: var(--text); padding: calc(var(--px) * 14) calc(var(--px) * 20); background: var(--card); border-radius: calc(var(--px) * 16); text-align: center; }
#popover .p-src { margin-top: calc(var(--px) * 18); padding-top: calc(var(--px) * 14); border-top: 1px solid var(--stroke); font-size: calc(var(--px) * 20); color: var(--text-3); }

/* ---------- HUD ---------- */
#hud { position: fixed; inset: 0; pointer-events: none; z-index: 40; }
#progress { position: absolute; left: 0; bottom: 0; height: calc(var(--px) * 5); background: linear-gradient(90deg, var(--blue), var(--cyan)); width: 0; transition: width 0.8s var(--ease-out); box-shadow: 0 0 calc(var(--px) * 16) var(--blue); }
#hud .hud-row { position: absolute; left: 50%; bottom: calc(var(--px) * 26); transform: translateX(-50%); width: var(--stage-w); display: flex; justify-content: space-between; align-items: center; padding: 0 calc(var(--px) * 44); transition: opacity 0.6s var(--ease); }
body.idle #hud .hud-row { opacity: 0.0; }
#hud .hud-row > * { pointer-events: auto; }
.hud-left { display: flex; gap: calc(var(--px) * 16); align-items: center; }
#counter { font-size: var(--fs-micro); color: var(--text-3); font-weight: 600; font-variant-numeric: tabular-nums; letter-spacing: 0.04em; }
#section-name { font-size: var(--fs-micro); color: var(--text-3); font-weight: 600; letter-spacing: 0.06em; }
.hud-btns { display: flex; gap: calc(var(--px) * 10); align-items: center; }
.hud-btn { width: calc(var(--px) * 54); height: calc(var(--px) * 54); border-radius: 50%; display: grid; place-items: center; background: var(--card); border: 1px solid var(--stroke); color: var(--text-2); transition: background .3s, color .3s; }
.hud-btn:hover { background: var(--card-2); color: var(--text); }
.hud-btn svg { width: 46%; height: 46%; }
#src-chip { cursor: pointer; }
#src-chip:hover { color: var(--text); border-color: var(--stroke-2); }

#overview { position: fixed; inset: 0; z-index: 70; background: color-mix(in srgb, var(--bg) 94%, transparent); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); display: none; overflow-y: auto; padding: calc(var(--px) * 70) calc(var(--px) * 90); }
#overview.show { display: block; }
#overview h3 { font-size: var(--fs-h2); font-weight: 700; letter-spacing: -0.02em; margin-bottom: calc(var(--px) * 36); }
.ov-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: calc(var(--px) * 20); }
.ov-item { text-align: left; padding: calc(var(--px) * 24); border-radius: calc(var(--px) * 22); background: var(--card); border: 1px solid var(--stroke); transition: background .3s, transform .4s var(--ease-out), border-color .3s; }
.ov-item:hover { background: var(--card-2); transform: translateY(calc(var(--px) * -4)); }
.ov-item.cur { border-color: var(--blue); }
.ov-item .n { font-size: var(--fs-micro); color: var(--text-3); font-weight: 650; }
.ov-item .t { font-size: calc(var(--px) * 28); font-weight: 650; margin-top: calc(var(--px) * 8); line-height: 1.15; }
.ov-item .s { font-size: calc(var(--px) * 19); color: var(--accent, var(--blue)); margin-top: calc(var(--px) * 10); font-weight: 650; letter-spacing: .08em; text-transform: uppercase; }

#figmodal { position: fixed; inset: 0; z-index: 80; display: none; place-items: center; background: rgba(0, 0, 0, 0.84); backdrop-filter: blur(12px); }
#figmodal.show { display: grid; }
#figmodal figure { display: grid; gap: 14px; justify-items: center; }
#figmodal img { max-width: 88vw; max-height: 82vh; border-radius: 18px; box-shadow: var(--shadow); background: #fff; }
#figmodal figcaption { color: #d1d1d6; font-size: max(15px, calc(var(--px) * 26)); }

#laser { position: fixed; z-index: 90; width: calc(var(--px) * 34); height: calc(var(--px) * 34); border-radius: 50%; pointer-events: none; background: radial-gradient(circle, #fff 0 16%, #ff3b30 30%, rgba(255, 59, 48, 0.35) 55%, transparent 72%); transform: translate(-50%, -50%); display: none; }
body.laser #laser { display: block; }
body.laser, body.laser * { cursor: none !important; }

#help { position: fixed; z-index: 75; right: calc(var(--px) * 40); top: calc(var(--px) * 40); padding: calc(var(--px) * 30) calc(var(--px) * 36); border-radius: calc(var(--px) * 26); background: var(--glass); border: 1px solid var(--stroke-2); backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px); font-size: calc(var(--px) * 24); color: var(--text-2); display: none; box-shadow: var(--shadow); }
#help.show { display: block; }
#help h5 { font-size: calc(var(--px) * 28); color: var(--text); margin-bottom: calc(var(--px) * 14); }
#help table { border-spacing: 0 calc(var(--px) * 8); }
#help td:first-child { padding-right: calc(var(--px) * 24); }
kbd { display: inline-block; min-width: 1.8em; text-align: center; padding: 0.1em 0.5em; border-radius: 0.4em; border: 1px solid var(--stroke-2); background: var(--card); font: 600 0.9em var(--font); color: var(--text); }

/* builds */
[data-step] { transition: opacity 0.7s var(--ease), transform 0.8s var(--ease-out), filter .7s var(--ease); }
.slide [data-step].pending { opacity: 0; transform: translateY(calc(var(--px) * 18)); filter: blur(calc(var(--px) * 6)); pointer-events: none; }

.slide .rise > * { opacity: 0; transform: translateY(calc(var(--px) * 26)); transition: opacity 0.8s var(--ease), transform 1s var(--ease-out), filter .7s var(--ease); }
.slide.active .rise > * { opacity: 1; transform: none; }
.slide.active .rise > *:nth-child(1) { transition-delay: 0.22s; }
.slide.active .rise > *:nth-child(2) { transition-delay: 0.32s; }
.slide.active .rise > *:nth-child(3) { transition-delay: 0.42s; }
.slide.active .rise > *:nth-child(4) { transition-delay: 0.52s; }
.slide.active .rise > *:nth-child(5) { transition-delay: 0.62s; }
.slide.active .rise > *:nth-child(6) { transition-delay: 0.72s; }
.slide.active .rise > *:nth-child(7) { transition-delay: 0.82s; }
.slide.active .rise > *:nth-child(8) { transition-delay: 0.92s; }
.slide.active .rise > .pending { opacity: 0; transform: translateY(calc(var(--px) * 18)); transition-delay: 0s; }

/* pinned 3D labels */
.pin-layer { position: absolute; inset: 0; pointer-events: none; }
.pin {
  position: absolute; left: 0; top: 0;
  pointer-events: auto;
  display: inline-flex; align-items: center; gap: calc(var(--px) * 12);
  padding: calc(var(--px) * 10) calc(var(--px) * 24) calc(var(--px) * 10) calc(var(--px) * 14);
  border-radius: 999px; background: var(--glass); border: 1px solid var(--stroke-2);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  font-size: var(--fs-small); font-weight: 700; white-space: nowrap;
  transition: opacity 0.4s var(--ease), box-shadow .3s, border-color .3s;
  will-change: transform; z-index: 5;
}
.pin i { width: calc(var(--px) * 18); height: calc(var(--px) * 18); border-radius: 50%; background: var(--c, var(--blue)); box-shadow: 0 0 calc(var(--px) * 14) var(--c, var(--blue)); }
.pin.hot { border-color: var(--c); box-shadow: 0 0 0 calc(var(--px) * 3) color-mix(in srgb, var(--c) 40%, transparent); }

.readout { display: grid; gap: calc(var(--px) * 6); }
.readout .k { font-size: var(--fs-micro); font-weight: 650; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-3); }
.readout .v { font-size: calc(var(--px) * 64); font-weight: 700; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; line-height: 1; }
.readout .v small { font-size: 0.42em; font-weight: 600; color: var(--text-2); margin-left: 0.2em; letter-spacing: 0; }

/* SVG charts — viewBox units are design pixels, so plain px here */
.chart { width: 100%; height: 100%; overflow: visible; display: block; }
.chart text { font-family: var(--font); fill: var(--text-2); font-size: 24px; font-weight: 600; }
.chart .axis path, .chart .axis line { stroke: var(--stroke-2); stroke-width: 2.5px; }
.chart .axis text { fill: var(--text-2); font-size: 24px; }
.chart .grid line { stroke: var(--grid); stroke-width: 1.5px; }
.chart .grid path { display: none; }
.chart .ax-title { fill: var(--text-2); font-size: 25px; font-weight: 650; }
.chart .lbl { font-size: 28px; font-weight: 700; }
.chart .line { fill: none; stroke-width: 7px; stroke-linecap: round; stroke-linejoin: round; }
.chart .line.mid { stroke-width: 5px; }
.chart .line.thin { stroke-width: 3.5px; }
.chart .dash { stroke-dasharray: 10 12; }
.chart .glow { filter: drop-shadow(0 0 8px currentColor); }
:root[data-theme="light"] .chart .glow { filter: none; }

.kbd-hint { font-size: var(--fs-micro); color: var(--text-3); font-weight: 600; letter-spacing: .06em; display: flex; gap: calc(var(--px) * 12); align-items: center; }
.hidden { display: none !important; }
.muted { opacity: 0.35; }