:root {
  --beige: #e8dfd0;
  --beige-light: #f3ede3;
  --beige-deep: #c7bcaa;
  --ink: #0b0b0a;
  --ink-soft: #272622;
  --muted: #6f695f;
  --line: rgba(11,11,10,.22);
  --line-inverse: rgba(232,223,208,.22);
  --radius: 0;
}
* { box-sizing: border-box; }
html { color-scheme: light; scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--beige);
  color: var(--ink);
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
}
button, input { font: inherit; }
button { color: inherit; }
.shell { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.topbar { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--ink); }
.brand { color: var(--ink); text-decoration: none; font-size: 14px; font-weight: 800; letter-spacing: -.02em; }
.top-actions { display: flex; align-items: center; gap: 12px; }
.badge { padding: 7px 9px; border: 1px solid var(--ink); color: var(--ink); font-size: 10px; letter-spacing: .12em; }
.language-switch { display: flex; border: 1px solid var(--ink); }
.language-switch button { min-width: 48px; padding: 7px 9px; border: 0; background: transparent; color: var(--ink); font-size: 10px; cursor: pointer; }
.language-switch button + button { border-left: 1px solid var(--ink); }
.language-switch button[aria-pressed="true"] { background: var(--ink); color: var(--beige); }
.hero { padding: 88px 0 52px; max-width: 970px; }
.eyebrow { margin: 0 0 16px; color: var(--muted); font-size: 11px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(48px, 8.5vw, 104px); font-weight: 700; line-height: .92; letter-spacing: -.075em; }
h1 em { color: var(--ink); font-style: normal; -webkit-text-stroke: 1px var(--ink); }
.lede { max-width: 700px; margin: 30px 0 0; color: var(--ink-soft); font-size: 15px; line-height: 1.7; }
.calculator { display: grid; grid-template-columns: .92fr 1.08fr; border: 1px solid var(--ink); overflow: hidden; background: var(--beige-light); }
.input-panel, .result-panel { min-width: 0; padding: 40px; }
.input-panel { background: var(--beige-light); border-right: 1px solid var(--ink); }
.result-panel { background: var(--ink); color: var(--beige-light); }
h2 { margin: 0 0 20px; font-size: 20px; letter-spacing: -.04em; }
.money-input { height: 82px; display: flex; align-items: center; gap: 10px; padding: 0 18px; border: 1px solid var(--ink); background: var(--beige); }
.money-input:focus-within { box-shadow: inset 0 0 0 2px var(--ink); }
.money-input > span { color: var(--ink); font-size: 26px; font-weight: 800; }
.money-input input { width: 100%; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--ink); font-size: clamp(30px, 5vw, 42px); font-weight: 800; font-variant-numeric: tabular-nums; }
.money-input em { color: var(--muted); font-size: 11px; font-style: normal; letter-spacing: .08em; }
.quick-amounts { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 12px; }
.quick-amounts button, .reset { border: 1px solid var(--ink); background: transparent; padding: 9px 12px; color: var(--ink); font-size: 11px; cursor: pointer; }
.quick-amounts button:hover, .reset:hover { background: var(--ink); color: var(--beige); }
details { margin-top: 30px; border-top: 1px solid var(--ink); padding-top: 22px; }
summary { display: flex; justify-content: space-between; gap: 16px; color: var(--ink); cursor: pointer; font-size: 12px; font-weight: 800; }
.summary-hint { color: var(--muted); font-size: 9px; font-weight: 500; text-align: right; }
.assumptions-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 20px; }
.assumptions-grid label { color: var(--muted); font-size: 10px; }
.unit-input { height: 42px; display: flex; align-items: center; margin-top: 7px; padding: 0 11px; border: 1px solid var(--ink); background: var(--beige); }
.unit-input input { width: 100%; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--ink); font-variant-numeric: tabular-nums; }
.unit-input i { color: var(--muted); font-size: 9px; font-style: normal; }
.reset { margin-top: 15px; }
.result-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.result-head p { margin: 0 0 7px; color: var(--beige-deep); font-size: 11px; }
.result-head strong { display: inline-block; font-size: clamp(38px, 6vw, 58px); line-height: 1; letter-spacing: -.055em; font-variant-numeric: tabular-nums; }
.result-head > div > span { margin-left: 7px; color: var(--beige-deep); font-size: 10px; }
.bonus-chip { min-width: 102px; padding: 12px; border: 1px solid var(--beige); background: var(--beige); color: var(--ink); text-align: right; }
.bonus-chip small { display: block; margin-bottom: 4px; color: var(--muted); font-size: 9px; }
.bonus-chip b { font-size: 18px; }
.bar { height: 12px; display: flex; overflow: hidden; margin-top: 30px; border: 1px solid var(--beige); background: var(--ink-soft); }
.bar span { display: block; min-width: 0; transition: width .25s ease; }
.bar-base { background: #8f877b; }
.bar-bonus { background: var(--beige-light); }
.bar-vested { background: #3b3934; }
.legend { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 10px; color: var(--beige-deep); font-size: 9px; }
.legend > span { display: flex; align-items: center; gap: 5px; }
.dot { width: 7px; height: 7px; }
.dot.base { background: #8f877b; }.dot.bonus { background: var(--beige-light); }.dot.vested { background: #5b574f; }
.result-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; margin-top: 28px; border-top: 1px solid var(--line-inverse); border-left: 1px solid var(--line-inverse); }
.result-grid article { min-width: 0; padding: 16px; border-right: 1px solid var(--line-inverse); border-bottom: 1px solid var(--line-inverse); background: transparent; }
.result-grid article > span { display: block; min-height: 25px; margin-bottom: 7px; color: var(--beige-deep); font-size: 9px; line-height: 1.35; }
.result-grid article b { display: block; overflow: hidden; font-size: 18px; letter-spacing: -.03em; text-overflow: ellipsis; font-variant-numeric: tabular-nums; }
.result-grid article small { color: var(--beige-deep); font-size: 8px; }
.result-grid article.accent { background: var(--beige); color: var(--ink); }
.result-grid article.accent > span, .result-grid article.accent small { color: var(--muted); }
.summary-line { display: flex; justify-content: space-between; gap: 16px; margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--line-inverse); font-size: 11px; }
.summary-line > span { color: var(--beige-deep); }.summary-line b span { color: var(--beige-light); }
.effective { margin: 8px 0 0; color: var(--beige-deep); font-size: 9px; text-align: right; }
.effective strong { color: var(--beige-light); }
.copy { width: 100%; margin-top: 22px; padding: 14px; border: 1px solid var(--beige); background: var(--beige); color: var(--ink); font-weight: 800; cursor: pointer; }
.copy:hover { background: transparent; color: var(--beige); }
.formula-card { display: grid; grid-template-columns: 1fr 1.1fr; gap: 28px; align-items: center; margin: 32px 0 80px; padding: 34px; border: 1px solid var(--ink); background: transparent; }
.formula-card h2 { margin-bottom: 0; font-size: 26px; }
.formula-card code { grid-column: 2; grid-row: 1; padding: 18px; border: 1px solid var(--ink); background: var(--ink); color: var(--beige); font-size: clamp(12px, 2vw, 16px); text-align: center; }
.formula-card > p:last-child { grid-column: 1 / -1; margin: 0; color: var(--ink-soft); font-size: 12px; line-height: 1.7; }
footer { display: flex; align-items: flex-start; justify-content: space-between; gap: 30px; padding: 28px 0 52px; border-top: 1px solid var(--ink); color: var(--muted); font-size: 9px; line-height: 1.7; }
footer p { max-width: 790px; margin: 0; } footer b { color: var(--ink); } footer a { flex: 0 0 auto; color: var(--ink); font-weight: 800; text-decoration: none; }
@media (max-width: 800px) {
  .shell { width: min(100% - 24px, 620px); }
  .topbar { min-height: 68px; }.badge { display: none; }
  .hero { padding: 58px 4px 34px; }.lede { font-size: 13px; }
  .calculator { grid-template-columns: 1fr; }.input-panel { border-right: 0; border-bottom: 1px solid var(--ink); }
  .input-panel, .result-panel { padding: 24px; }
  .formula-card { grid-template-columns: 1fr; margin-bottom: 50px; padding: 24px; }
  .formula-card code { grid-column: 1; grid-row: auto; text-align: left; overflow-wrap: anywhere; }
  footer { flex-direction: column; gap: 16px; }
}
@media (max-width: 430px) {
  .brand { max-width: 128px; font-size: 11px; line-height: 1.2; }
  .top-actions { gap: 7px; }
  .language-switch button { min-width: 43px; padding: 7px 6px; }
  h1 { font-size: 44px; }
  .input-panel, .result-panel { padding: 20px; }
  .money-input { height: 70px; }.money-input input { font-size: 32px; }
  .assumptions-grid { grid-template-columns: 1fr; }
  .result-head { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 8px; }
  .result-head > div:first-child { min-width: 0; }
  .result-head strong { font-size: 34px; }
  .result-head > div > span { display: block; margin: 5px 0 0; }
  .bonus-chip { min-width: 82px; padding: 10px; }.bonus-chip b { font-size: 14px; }
  .result-grid article { padding: 13px 11px; }.result-grid article b { font-size: 15px; }
  .summary-line { flex-direction: column; gap: 5px; }.effective { text-align: left; }
}