:root {
  --bg: #07090d;            /* near-black */
  --bg-glow-1: #0a2030;     /* deep navy wash */
  --bg-glow-2: #0a2a2e;     /* deep teal wash */
  --panel: #10151c;         /* slate-black panel */
  --panel-2: #161d27;       /* display surface */
  --text: #e8edf3;
  --muted: #8b97a8;
  --accent: #14b8a6;        /* teal: equals */
  --accent-text: #04211d;
  --accent-2: #3b82f6;      /* blue: mode active */
  --accent-3: #2dd4bf;      /* teal-400: RPN on */
  --accent-grad: linear-gradient(135deg, #2dd4bf 0%, #0ea5e9 100%);
  --brand-grad: linear-gradient(90deg, #1e40af 0%, #0ea5e9 50%, #14b8a6 100%);
  --key: #1b232e;
  --key-hover: #232d3b;
  --key-active: #2e3a4a;
  --op: #182634;
  --op-hover: #213245;
  --op-text: #5eead4;
  --fn: #161e29;
  --fn-text: #94a3b8;
  --shadow: 0 1px 0 rgba(255,255,255,0.04) inset, 0 14px 40px rgba(0,0,0,0.55);
  --radius: 14px;
  --gap: 10px;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #eef2f6;
    --bg-glow-1: #dbeafe;
    --bg-glow-2: #ccfbf1;
    --panel: #ffffff;
    --panel-2: #f4f7fb;
    --text: #0f172a;
    --muted: #64748b;
    --accent: #0d9488;
    --accent-text: #ecfdf5;
    --accent-2: #2563eb;
    --accent-3: #0e7490;
    --accent-grad: linear-gradient(135deg, #14b8a6 0%, #0284c7 100%);
    --brand-grad: linear-gradient(90deg, #1e40af 0%, #0284c7 50%, #0d9488 100%);
    --key: #f1f5f9;
    --key-hover: #e2e8f0;
    --key-active: #cbd5e1;
    --op: #e0f2fe;
    --op-hover: #bae6fd;
    --op-text: #0e7490;
    --fn: #e2e8f0;
    --fn-text: #475569;
    --shadow: 0 1px 0 rgba(0,0,0,0.03) inset, 0 12px 32px rgba(15,23,42,0.10);
  }
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background:
    radial-gradient(80% 50% at 15% 0%, var(--bg-glow-1) 0%, transparent 60%),
    radial-gradient(70% 50% at 100% 100%, var(--bg-glow-2) 0%, transparent 60%),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}
body {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
.app {
  width: min(420px, 100vw);
  height: 100dvh;
  max-height: 880px;
  display: flex;
  flex-direction: column;
  padding: clamp(8px, 1.6vh, 16px);
  gap: clamp(6px, 1.2vh, 12px);
}
.ad-slot {
  width: 100%;
  background: transparent;
  text-align: center;
  overflow: hidden;
}
.ad-slot[hidden] { display: none; }
.ad-slot.ad-top { min-height: 0; }
.ad-slot.ad-bottom { min-height: 0; }
.calc {
  flex: 1 1 0;
  min-height: 0;
  background: var(--panel);
  border-radius: 20px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}
.calc::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--brand-grad);
  z-index: 1;
}
.display {
  padding: clamp(10px, 2.2vh, 22px) clamp(14px, 3vw, 22px) clamp(8px, 1.4vh, 14px);
  background: linear-gradient(180deg, var(--panel-2) 0%, var(--panel) 100%);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  flex: 0 0 auto;
  min-height: 0;
  gap: 4px;
}
.display .meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  min-height: 18px;
}
.display .meta .mode-pill {
  background: var(--brand-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 600;
}
.display .meta .rpn-badge {
  color: var(--accent-3);
  border: 1px solid color-mix(in srgb, var(--accent-3) 50%, transparent);
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 10px;
  font-weight: 600;
}
.stack {
  font-size: 13px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  display: none;
  flex-direction: column;
  gap: 2px;
  min-height: 0;
  flex-shrink: 1;
}
.stack.show { display: flex; }
.stack .stack-row {
  display: flex;
  justify-content: flex-end;
  align-items: baseline;
  gap: 8px;
  color: var(--muted);
  line-height: 1.1;
}
.stack .stack-row .label {
  font-size: 10px;
  letter-spacing: .1em;
  color: color-mix(in srgb, var(--accent-3) 80%, var(--muted));
  opacity: 0.8;
  min-width: 12px;
}
.stack .stack-row .val {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
}
.display .history {
  color: var(--muted);
  font-size: 14px;
  text-align: right;
  min-height: 18px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  direction: rtl;
}
.display .value {
  color: var(--text);
  font-size: clamp(28px, 6.5vh, 56px);
  font-weight: 300;
  text-align: right;
  line-height: 1.05;
  /* Reserve the max height up front so font-size shrinking via fitDisplay()
     doesn't change the .display element's overall height. */
  min-height: clamp(30px, 6.85vh, 59px);
  overflow-x: auto;
  overflow-y: hidden;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
  direction: ltr;
  margin-top: auto;
  padding-top: 4px;
}
.display .value::-webkit-scrollbar { display: none; }

/* ---------- Non-keypad mode panels (Graphing, Financial) ---------- */
.mode-panel {
  flex: 1 1 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  padding: clamp(8px, 1.4vh, 14px);
  gap: clamp(6px, 1vh, 10px);
  color: var(--text);
}
.mode-panel[hidden] { display: none; }
/* Graphing uses a slim header (mode pill only — no value/history/stack). */
.display.graph-display {
  padding: clamp(8px, 1.6vh, 14px) clamp(14px, 3vw, 22px);
  min-height: 0;
}

/* ---------- Graphing ---------- */
.graph-panel { gap: clamp(3px, 0.6vh, 6px); padding: clamp(5px, 0.8vh, 8px); }
.graph-panel .row { display: flex; align-items: center; gap: 6px; }
.graph-panel .fn-input {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  background: var(--panel-2);
  border: 1px solid color-mix(in srgb, var(--accent-3) 25%, transparent);
  border-radius: 7px;
  padding: 0 7px;
  height: clamp(26px, 3vh, 30px);
  transition: border-color 120ms;
}
.graph-panel .fn-input[hidden] { display: none; }
.graph-panel .fn-input:focus-within {
  border-color: var(--accent-3);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-3) 18%, transparent);
}
.graph-panel .fn-input .swatch {
  width: 9px;
  height: 9px;
  border-radius: 2px;
  margin-right: 6px;
  flex: 0 0 auto;
}
.graph-panel .fn-input .prefix {
  color: var(--muted);
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 12px;
  margin-right: 4px;
}
.graph-panel .fn-input input {
  flex: 1;
  background: transparent;
  border: 0;
  outline: 0;
  color: var(--text);
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  min-width: 0;
  padding: 0;
}
.graph-panel .fn-input input::placeholder { color: var(--muted); opacity: 0.7; }
.graph-panel .fn-input button.fn-toggle {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 4px;
  font-size: 10px;
  line-height: 1;
}
.graph-panel .fn-input button.fn-toggle:hover { background: var(--key-hover); color: var(--text); }
.graph-panel .fn-input.disabled { opacity: 0.55; }
.graph-panel .fn-input .err {
  color: #f87171;
  font-size: 11px;
  margin-left: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 60%;
}
.graph-panel .controls { display: flex; gap: 5px; align-items: center; }
.graph-panel .controls button {
  appearance: none;
  border: 0;
  background: var(--key);
  color: var(--text);
  border-radius: 6px;
  padding: 4px 9px;
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 100ms;
}
.graph-panel .controls button:hover { background: var(--key-hover); }
.graph-panel .controls .spacer { flex: 1; }
.graph-panel .trace {
  color: var(--muted);
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  min-height: 14px;
  line-height: 14px;
  text-align: right;
}
.graph-panel .trace .x { color: var(--accent-3); }
.graph-panel .trace .y { color: var(--accent-2); }
.graph-panel .canvas-wrap {
  flex: 1 1 0;
  min-height: 0;
  background: var(--panel-2);
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  touch-action: none;
}
.graph-panel canvas { display: block; width: 100%; height: 100%; cursor: grab; }
.graph-panel canvas.dragging { cursor: grabbing; }

/* ---------- Financial ---------- */
.finance-panel { gap: clamp(8px, 1.4vh, 12px); overflow-y: auto; }
.finance-panel h3 {
  margin: 0 0 4px 0;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}
.finance-panel .tvm {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: 8px 10px;
  align-items: center;
}
.finance-panel .tvm label {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}
.finance-panel .tvm input {
  background: var(--panel-2);
  border: 1px solid color-mix(in srgb, var(--muted) 20%, transparent);
  color: var(--text);
  border-radius: 8px;
  padding: 6px 10px;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  text-align: right;
  outline: 0;
  min-width: 0;
  width: 100%;
  transition: border-color 120ms;
}
.finance-panel .tvm input:focus {
  border-color: var(--accent-3);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-3) 18%, transparent);
}
.finance-panel .tvm input.solved {
  color: var(--accent-3);
  border-color: var(--accent-3);
  background: color-mix(in srgb, var(--accent-3) 8%, var(--panel-2));
}
.finance-panel .tvm button.solve-btn {
  appearance: none;
  border: 1px solid color-mix(in srgb, var(--accent-3) 35%, transparent);
  background: transparent;
  color: var(--accent-3);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  cursor: pointer;
  transition: background-color 120ms;
}
.finance-panel .tvm button.solve-btn:hover { background: color-mix(in srgb, var(--accent-3) 14%, transparent); }
.finance-panel .options { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.finance-panel .options label {
  font-size: 12px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.finance-panel .options select {
  background: var(--panel-2);
  border: 1px solid color-mix(in srgb, var(--muted) 20%, transparent);
  color: var(--text);
  border-radius: 6px;
  padding: 4px 8px;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
}
.finance-panel .actions { display: flex; gap: 8px; }
.finance-panel .actions button {
  appearance: none;
  border: 0;
  background: var(--key);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 100ms;
}
.finance-panel .actions button:hover { background: var(--key-hover); }
.finance-panel .summary {
  background: var(--panel-2);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
  border: 1px solid color-mix(in srgb, var(--muted) 12%, transparent);
}
.finance-panel .summary strong { color: var(--text); font-weight: 600; }
.finance-panel .summary .err { color: #f87171; }

/* ---------- Keypad ---------- */
.pad {
  flex: 1 1 0;
  min-height: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: minmax(0, 1fr);
  gap: clamp(4px, 0.9vh, 10px);
  padding: clamp(4px, 0.9vh, 10px);
}
.pad[hidden] { display: none; }
button.key {
  appearance: none;
  border: 0;
  border-radius: clamp(8px, 1.4vh, 14px);
  background: var(--key);
  color: var(--text);
  font-size: clamp(15px, 2.6vh, 22px);
  font-weight: 500;
  cursor: pointer;
  user-select: none;
  transition: background-color 80ms ease, transform 60ms ease, box-shadow 80ms ease;
  font-variant-numeric: tabular-nums;
  min-height: 0;
  padding: 0 4px;
  line-height: 1;
  box-shadow: 0 1px 0 rgba(255,255,255,0.04) inset, 0 1px 2px rgba(0,0,0,0.25);
}
button.key:hover { background: var(--key-hover); }
button.key:active, button.key.pressed { background: var(--key-active); transform: translateY(1px); box-shadow: 0 0 0 rgba(0,0,0,0); }
button.key.fn { background: var(--fn); color: var(--fn-text); font-size: clamp(13px, 2.1vh, 18px); }
button.key.fn:hover { background: var(--key-hover); color: var(--text); }
button.key.clear-key { font-size: clamp(12px, 1.85vh, 15px); letter-spacing: 0.01em; }
button.key.op {
  background: var(--op);
  color: var(--op-text);
  font-size: clamp(18px, 3vh, 26px);
  font-weight: 600;
}
button.key.op:hover { background: var(--op-hover); }
button.key.op:active, button.key.op.pressed { background: color-mix(in srgb, var(--accent) 35%, var(--op)); color: var(--text); }
button.key.eq {
  background: var(--accent-grad);
  color: var(--accent-text);
  font-weight: 700;
  box-shadow: 0 1px 0 rgba(255,255,255,0.25) inset, 0 6px 16px color-mix(in srgb, var(--accent) 40%, transparent);
}
button.key.eq:hover { filter: brightness(1.06); }
button.key.eq:active, button.key.eq.pressed { filter: brightness(0.95); }
button.key.wide { grid-column: span 2; }

/* Scientific pad: 3 rows of sci functions stacked above the basic 5 rows. */
.pad.sci { grid-template-columns: repeat(4, 1fr); }
button.key.sci {
  background: var(--fn);
  color: var(--accent-3);
  font-size: clamp(11px, 1.85vh, 16px);
  font-weight: 500;
}
button.key.sci:hover { background: var(--key-hover); color: var(--text); }
button.key.sci.alt { color: color-mix(in srgb, var(--accent-2) 75%, var(--text)); }
.display .meta .trig-mode {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--accent-3);
  border: 1px solid color-mix(in srgb, var(--accent-3) 40%, transparent);
  border-radius: 999px;
  padding: 2px 8px;
  cursor: pointer;
  user-select: none;
  background: transparent;
  margin-right: 6px;
}
.display .meta .trig-mode:hover { background: color-mix(in srgb, var(--accent-3) 10%, transparent); }
.display .meta .meta-right { display: flex; align-items: center; gap: 4px; }
.display .meta .rpn-toggle {
  appearance: none;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--muted);
  border: 1px solid color-mix(in srgb, var(--muted) 45%, transparent);
  border-radius: 999px;
  padding: 2px 8px;
  background: transparent;
  cursor: pointer;
  user-select: none;
  transition: color 120ms, border-color 120ms, background-color 120ms, box-shadow 120ms;
}
.display .meta .rpn-toggle:hover { color: var(--text); border-color: var(--accent-3); }
.display .meta .rpn-toggle.on {
  color: var(--accent-3);
  border-color: var(--accent-3);
  background: color-mix(in srgb, var(--accent-3) 12%, transparent);
  box-shadow: 0 0 10px color-mix(in srgb, var(--accent-3) 35%, transparent);
}

/* ---------- Mode/page nav ---------- */
.modes {
  display: flex;
  gap: 6px;
  background: var(--panel);
  padding: 6px;
  border-radius: 16px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  flex: 0 0 auto;
}
.modes::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--brand-grad);
  opacity: 0.5;
}
.modes a, .modes button {
  flex: 1;
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  padding: 10px 6px;
  border-radius: 10px;
  cursor: pointer;
  transition: background-color 120ms ease, color 120ms ease, box-shadow 120ms ease;
  letter-spacing: .02em;
  white-space: nowrap;
  text-decoration: none;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modes a:hover, .modes button:hover {
  background: color-mix(in srgb, var(--accent-2) 10%, transparent);
  color: var(--text);
}
.modes a.active, .modes button.active {
  background: color-mix(in srgb, var(--accent-2) 22%, transparent);
  color: var(--text);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent-2) 40%, transparent) inset;
}
.modes .rpn-toggle {
  flex: 0 0 auto;
  padding: 10px 14px;
  border: 1px solid color-mix(in srgb, var(--muted) 25%, transparent);
  color: var(--muted);
  font-weight: 600;
  letter-spacing: .08em;
}
.modes .rpn-toggle.on {
  color: var(--accent-3);
  border-color: var(--accent-3);
  background: color-mix(in srgb, var(--accent-3) 12%, transparent);
  box-shadow: 0 0 14px color-mix(in srgb, var(--accent-3) 35%, transparent);
}

/* ---------- Responsive tail ---------- */
@media (max-width: 340px) {
  .modes a, .modes button { font-size: 12px; padding: 8px 4px; }
  .modes .rpn-toggle { padding: 8px 10px; }
}
@media (max-height: 560px) {
  .modes { padding: 4px; }
  .modes a, .modes button { padding: 7px 5px; font-size: 12px; }
}

/* ---------- Financial (HP-12C-inspired) ---------- */
.fin-display .meta .fin-when {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--accent-3);
  border: 1px solid color-mix(in srgb, var(--accent-3) 40%, transparent);
  border-radius: 999px;
  padding: 2px 8px;
  background: transparent;
}
.fin-regs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 4px;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 10px;
  margin: 4px 0 2px;
}
.fin-regs span {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  padding: 3px 2px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--muted) 8%, transparent);
  border: 1px solid transparent;
  transition: background-color 120ms, border-color 120ms;
}
.fin-regs span b {
  font-weight: 700;
  color: var(--muted);
  font-size: 9px;
  letter-spacing: .1em;
}
.fin-regs span i {
  font-style: normal;
  color: var(--text);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}
.fin-regs span.set {
  background: color-mix(in srgb, var(--accent-3) 14%, transparent);
  border-color: color-mix(in srgb, var(--accent-3) 35%, transparent);
}
.fin-regs span.set b { color: var(--accent-3); }
.fin-regs span.solved {
  background: color-mix(in srgb, var(--accent-2) 18%, transparent);
  border-color: color-mix(in srgb, var(--accent-2) 50%, transparent);
}
.fin-regs span.solved b { color: var(--accent-2); }
.fin-regs span.flash { animation: fin-flash 320ms ease-out; }
@keyframes fin-flash {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.08); }
  100% { transform: scale(1); }
}

.fin-msg {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.35;
  /* Reserve two lines so the height doesn't jump when the message
     transitions between long startup copy and short status updates. */
  min-height: calc(11px * 1.35 * 2);
  margin-top: 2px;
}
.fin-msg b { color: var(--text); font-weight: 600; }
.fin-msg.err { color: #f87171; }
.fin-msg.ok { color: var(--accent-3); }

.fin-options {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
  padding: 0 clamp(4px, 0.9vh, 10px);
  flex: 0 0 auto;
}
.fin-options label {
  display: flex;
  gap: 4px;
  align-items: center;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: .05em;
}
.fin-options select {
  background: var(--panel-2);
  border: 1px solid color-mix(in srgb, var(--muted) 22%, transparent);
  color: var(--text);
  border-radius: 6px;
  padding: 3px 6px;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 12px;
}
.fin-options .opt-btn {
  appearance: none;
  border: 1px solid color-mix(in srgb, var(--muted) 22%, transparent);
  background: transparent;
  color: var(--muted);
  border-radius: 6px;
  padding: 4px 9px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .04em;
  cursor: pointer;
  transition: background-color 100ms, color 100ms, border-color 100ms;
}
.fin-options .opt-btn:hover { background: var(--key-hover); color: var(--text); }
.fin-options #tvm-WHEN-btn[aria-pressed="true"] {
  color: var(--accent-3);
  border-color: var(--accent-3);
  background: color-mix(in srgb, var(--accent-3) 10%, transparent);
}

/* 5-column pad for the financial calculator */
.pad.fin-pad { grid-template-columns: repeat(5, 1fr); }

/* TVM keys: gold/teal accent to look like dedicated function keys */
button.key.tvm {
  background: color-mix(in srgb, var(--accent-3) 18%, var(--fn));
  color: var(--accent-3);
  font-weight: 700;
  font-size: clamp(13px, 2.1vh, 17px);
  letter-spacing: .03em;
  border: 1px solid color-mix(in srgb, var(--accent-3) 35%, transparent);
  text-transform: uppercase;
}
button.key.tvm:hover {
  background: color-mix(in srgb, var(--accent-3) 28%, var(--fn));
  color: var(--text);
}
button.key.tvm.target {
  background: color-mix(in srgb, var(--accent-2) 32%, var(--fn));
  color: var(--text);
  border-color: color-mix(in srgb, var(--accent-2) 60%, transparent);
  box-shadow: 0 0 12px color-mix(in srgb, var(--accent-2) 35%, transparent);
}