:root {
  --ink: #102a2a;
  --muted: #5f706d;
  --paper: #f5f2e9;
  --card: #fffdf8;
  --line: #d7ddd7;
  --green: #0f6b58;
  --green-bright: #19a77f;
  --lime: #c9f45b;
  --orange: #e87536;
  --red: #b92f37;
  --red-dark: #831f2a;
  --shadow: 0 22px 60px rgba(16, 42, 42, 0.12);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--paper); }
button, input { font: inherit; }
a { color: inherit; }

.brand__mark {
  width: 44px; height: 44px; display: grid; place-items: center;
  border-radius: 12px; color: var(--lime); background: var(--ink);
  font-weight: 900; letter-spacing: -.05em;
}

.hero {
  padding: clamp(16px, 4vw, 46px) 20px 22px;
  background: linear-gradient(180deg, #e8eee5 0%, var(--paper) 100%);
}
.eyebrow {
  margin: 0 0 14px; color: var(--green-bright); text-transform: uppercase;
  letter-spacing: .12em; font-size: .75rem; font-weight: 900;
}
h1 { margin: 0; font-size: clamp(2rem, 4vw, 3.4rem); line-height: 1; letter-spacing: -.055em; }
.calculator-card { width: min(900px, 100%); margin: 0 auto; padding: clamp(22px, 4vw, 42px); border-radius: 28px; color: var(--ink); background: var(--card); box-shadow: var(--shadow); }
.calculator-intro { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 32px; padding-bottom: 26px; border-bottom: 1px solid var(--line); }
.calculator-intro .brand__mark { flex: 0 0 auto; }
.calculator-intro .eyebrow { margin-bottom: 9px; }
.calculator-intro p:last-child { margin: 12px 0 0; color: var(--muted); line-height: 1.5; }
.field label, .score-field label, legend { font-weight: 800; }
.money-input { position: relative; margin-top: 10px; }
.money-input input {
  width: 100%; padding: 17px 62px 17px 18px; border: 1px solid var(--line);
  border-radius: 14px; color: var(--ink); background: white; font-size: 1.35rem; font-weight: 850;
}
.money-input input:focus { outline: 3px solid rgba(25,167,127,.2); border-color: var(--green-bright); }
.money-input span { position: absolute; right: 18px; top: 50%; transform: translateY(-50%); color: var(--muted); font-weight: 800; }
.field small { display: block; margin-top: 8px; color: var(--muted); }
.scores-grid { display: grid; gap: 21px; margin-top: 30px; }
.score-field__head { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.weight { color: var(--green); font-size: .75rem; font-weight: 900; text-transform: uppercase; letter-spacing: .05em; }
.score-input { position: relative; }
.score-input input {
  width: 100%; min-height: 54px; padding: 12px 74px 12px 16px;
  border: 1px solid var(--line); border-radius: 13px;
  color: var(--ink); background: white; font-size: 1.18rem; font-weight: 900;
  font-variant-numeric: tabular-nums;
}
.score-input input:focus { outline: 3px solid rgba(25,167,127,.2); border-color: var(--green-bright); }
.score-input span { position: absolute; right: 16px; top: 50%; transform: translateY(-50%); color: var(--muted); font-weight: 800; }
.period-picker { margin: 31px 0 0; padding: 0; border: 0; }
.period-picker legend { margin-bottom: 12px; }
.period-picker__options { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.period-picker label { cursor: pointer; }
.period-picker input { position: absolute; opacity: 0; pointer-events: none; }
.period-picker span { display: grid; min-height: 46px; place-items: center; padding: 8px; border: 1px solid var(--line); border-radius: 12px; color: var(--muted); text-align: center; font-size: .82rem; font-weight: 800; }
.period-picker input:checked + span { border-color: var(--ink); color: white; background: var(--ink); box-shadow: inset 0 -3px 0 var(--lime); }

.results {
  position: relative; z-index: 2; display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 16px; width: min(900px, calc(100% - 40px)); margin: 0 auto;
}
.result-card { min-height: 180px; padding: 28px; border: 1px solid var(--line); border-radius: 22px; background: var(--card); box-shadow: 0 14px 36px rgba(16,42,42,.08); }
.result-card p { margin: 0; color: var(--muted); font-size: .82rem; font-weight: 850; text-transform: uppercase; letter-spacing: .07em; }
.result-card strong { display: block; margin-top: 13px; font-size: clamp(2rem, 4vw, 3.8rem); line-height: 1; letter-spacing: -.055em; }
.result-card span { display: block; margin-top: 14px; color: var(--muted); }
.result-card--earning { color: white; border-color: var(--green); background: var(--green); }
.result-card--earning p, .result-card--earning span { color: #d4e8e3; }

.explanation { width: min(900px, calc(100% - 40px)); margin: 36px auto 76px; }
.status-message { display: flex; gap: 16px; align-items: center; padding: 20px 24px; border: 1px solid #b8d9ca; border-radius: 18px; background: #e7f5ee; }
.status-message--none { color: #711923; border-color: #e4aeb2; background: #fae8e9; }
.status-message__icon { flex: 0 0 auto; width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; color: white; background: var(--green); font-size: 1.25rem; font-weight: 900; }
.status-message--none .status-message__icon { background: var(--red); }
.status-message strong { display: block; font-size: 1.08rem; }
.status-message p { margin: 5px 0 0; color: var(--muted); }
.status-message--none p { color: #85434a; }
.annual-comparison { margin-top: 14px; padding: clamp(22px, 4vw, 34px); border: 1px solid var(--line); border-radius: 20px; background: var(--card); box-shadow: 0 10px 30px rgba(16,42,42,.06); }
.annual-comparison__heading h2 { margin: 0; font-size: clamp(1.6rem, 3vw, 2.5rem); line-height: 1.08; letter-spacing: -.04em; }
.annual-comparison__heading > p:last-child { margin: 12px 0 0; color: var(--muted); line-height: 1.55; }
.tk-target-picker { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-top: 22px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 15px; background: #faf9f4; }
.tk-target-picker > span { color: var(--muted); font-size: .9rem; font-weight: 800; }
.tk-target-picker > div { display: flex; gap: 7px; }
.tk-target-picker button { min-width: 54px; min-height: 42px; border: 1px solid var(--line); border-radius: 11px; color: var(--ink); background: white; font-weight: 900; cursor: pointer; }
.tk-target-picker button:hover:not(:disabled) { border-color: var(--green); }
.tk-target-picker button.is-active { color: white; border-color: var(--ink); background: var(--ink); box-shadow: inset 0 -3px 0 var(--lime); }
.tk-target-picker button:disabled { opacity: .35; cursor: not-allowed; }
.annual-flow { display: grid; grid-template-columns: 1fr auto 1fr 1fr; gap: 12px; align-items: stretch; margin-top: 24px; }
.annual-flow__arrow { align-self: center; color: var(--green); font-size: 1.7rem; font-weight: 900; }
.annual-card { padding: 19px; border: 1px solid var(--line); border-radius: 16px; background: #faf9f4; }
.annual-card > span, .annual-card > small { display: block; color: var(--muted); }
.annual-card > span { font-size: .78rem; font-weight: 850; text-transform: uppercase; letter-spacing: .05em; }
.annual-card > strong { display: block; margin: 10px 0 7px; font-size: clamp(1.65rem, 3vw, 2.4rem); line-height: 1; letter-spacing: -.04em; }
.annual-card > small { line-height: 1.4; }
.annual-card--better { border-color: #b8d9ca; background: #edf7f2; }
.annual-card--gain { color: white; border-color: var(--green); background: var(--green); }
.annual-card--gain > span, .annual-card--gain > small { color: #d7ebe6; }
.annual-card--gain.is-loss { border-color: var(--red-dark); background: linear-gradient(145deg, var(--red), var(--red-dark)); }
.annual-card--gain.is-loss > span, .annual-card--gain.is-loss > small { color: #ffd9dc; }
.explanation-toggle {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 20px;
  margin-top: 14px; padding: 20px 24px; border: 1px solid var(--line); border-radius: 18px;
  color: var(--ink); background: var(--card); text-align: left; cursor: pointer; box-shadow: 0 10px 30px rgba(16,42,42,.06);
}
.explanation-toggle small, .explanation-toggle strong { display: block; }
.explanation-toggle small { margin-bottom: 5px; color: var(--muted); }
.explanation-toggle strong { font-size: 1.08rem; }
.explanation-toggle__symbol { flex: 0 0 auto; width: 38px; height: 38px; display: grid; place-items: center; border-radius: 50%; color: white; background: var(--ink); font-size: 1.45rem; font-weight: 500; transition: transform .2s ease; }
.explanation-toggle[aria-expanded="true"] .explanation-toggle__symbol { transform: rotate(45deg); }
.explanation-panel { margin-top: 18px; padding: clamp(24px, 4vw, 46px); border: 1px solid var(--line); border-radius: 24px; background: var(--card); box-shadow: 0 14px 40px rgba(16,42,42,.07); }
.section-heading h2, .target-box h2 { margin: 0; font-size: clamp(1.8rem, 3.4vw, 3.2rem); line-height: 1.05; letter-spacing: -.045em; }
.section-heading--compact > p:last-child, .target-box > div:first-child > p:last-child { margin: 12px 0 0; color: var(--muted); line-height: 1.6; }
.contributions { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 26px; }
.contribution-card { padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: #faf9f4; }
.contribution-card span, .contribution-card small { display: block; color: var(--muted); }
.contribution-card strong { display: block; margin: 8px 0 6px; font-size: 1.8rem; letter-spacing: -.04em; }
.contribution-card--total { color: white; border-color: var(--green); background: var(--green); }
.contribution-card--total span, .contribution-card--total small { color: #d7ebe6; }
.target-box { margin-top: 34px; padding-top: 32px; border-top: 1px solid var(--line); }
.threshold-impact { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 24px; }
.threshold-impact[hidden] { display: none; }
.threshold-impact article { padding: 19px; border: 1px solid var(--line); border-radius: 16px; background: #faf9f4; }
.threshold-impact span { display: block; color: var(--muted); font-size: .75rem; font-weight: 850; text-transform: uppercase; letter-spacing: .05em; }
.threshold-impact strong { display: block; margin-top: 9px; font-size: clamp(1.45rem, 3vw, 2rem); letter-spacing: -.04em; }
.threshold-impact .threshold-impact__better { border-color: #b8d9ca; background: #edf7f2; }
.threshold-impact .threshold-impact__loss { color: white; border-color: var(--red-dark); background: linear-gradient(145deg, var(--red), var(--red-dark)); }
.threshold-impact .threshold-impact__loss span { color: #ffd9dc; }

.rules { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 30px 0 90px; }
.section-heading { max-width: 760px; }
.section-heading > p:last-child { color: var(--muted); line-height: 1.6; }
.table-wrap { margin-top: 30px; overflow-x: auto; border: 1px solid var(--line); border-radius: 20px; background: var(--card); box-shadow: 0 12px 34px rgba(16,42,42,.06); }
table { width: 100%; border-collapse: collapse; min-width: 820px; font-variant-numeric: tabular-nums; }
th, td { padding: 16px 18px; border-bottom: 1px solid var(--line); text-align: right; }
th:first-child, td:first-child { text-align: left; }
thead th { color: white; background: var(--ink); font-size: .8rem; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr.is-active { background: #e6f7cc; font-weight: 850; }
.disclaimer { margin: 18px 0 0; color: var(--muted); font-size: .83rem; line-height: 1.55; }

footer { display: flex; justify-content: space-between; gap: 20px; padding: 24px clamp(20px, 6vw, 92px); color: #aac1bc; background: var(--ink); font-size: .82rem; }

@media (max-width: 920px) {
  .results { grid-template-columns: 1fr 1fr; }
  .annual-flow { grid-template-columns: 1fr; }
  .annual-flow__arrow { transform: rotate(90deg); justify-self: center; }
  .contributions, .threshold-impact { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .hero { padding: 10px 10px 18px; }
  .calculator-card { padding: 20px 17px 24px; border-radius: 18px; }
  .calculator-intro { gap: 12px; margin-bottom: 24px; padding-bottom: 20px; }
  .calculator-intro .brand__mark { width: 40px; height: 40px; }
  .calculator-intro p:last-child { font-size: .9rem; }
  .period-picker__options { grid-template-columns: 1fr 1fr; }
  .results { grid-template-columns: 1fr; }
  .result-card--score { grid-column: auto; }
  .result-card { min-height: 155px; }
  .explanation { margin-top: 40px; }
  .status-message, .explanation-toggle { padding: 17px; }
  .tk-target-picker { align-items: stretch; flex-direction: column; }
  .tk-target-picker > div { display: grid; grid-template-columns: repeat(3, 1fr); }
  .explanation-panel { padding: 22px 18px; }
  footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}