:root {
  color-scheme: light;
  --bg: #f3f2ed;
  --surface: #fdfdfc;
  --ink: #102a26;
  --text: #202322;
  --muted: #52615a;
  --green: #08785e;
  --mint: #1bbd93;
  --gold: #9b5900;
  --border: #e1dfd5;
  --control: #b8baad;
  --danger: #a82a30;
  --action: #102a26;
  --action-text: #fff;
  --action-hover: #08785e;
  --emphasis: #102a26;
  --bar-bg: #eae8dd;
  --chart-green: #08785e;
  --chart-blue: #1a5d99;
  --chart-purple: #865398;
  --chart-neutral: #656357;
  --radius: 18px;
  --space: clamp(1rem, 2.5vw, 2rem);
  --font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #101b18;
  --surface: #182823;
  --ink: #ecf5ef;
  --text: #dfebe4;
  --muted: #b8cbc0;
  --green: #6bdec0;
  --mint: #64e2bf;
  --gold: #f5b260;
  --border: #344a40;
  --control: #6d877a;
  --danger: #ffa1a6;
  --action: #6bdec0;
  --action-text: #102a26;
  --action-hover: #96edd6;
  --emphasis: #103d32;
  --bar-bg: #344a40;
  --chart-green: #6bdec0;
  --chart-blue: #92c4ff;
  --chart-purple: #d7a6ef;
  --chart-neutral: #d5cfbc;
}
*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 1rem/1.5 var(--font); }
a { color: var(--green); text-underline-offset: .2em; }
a:hover { color: var(--ink); }
:focus-visible { outline: 3px solid var(--green); outline-offset: 4px; }
h1, h2, h3 { color: var(--ink); line-height: 1.12; margin: 0 0 .65rem; }
h1 { font-size: clamp(2rem, 3.7vw, 3.4rem); letter-spacing: -.035em; }
h2 { font-size: clamp(1.25rem, 2vw, 1.65rem); letter-spacing: -.02em; }
h3 { font-size: 1.08rem; }
p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }
.shell { width: min(90%, 1280px); margin-inline: auto; }
.skip { position: absolute; z-index: 5; left: 1rem; top: -5rem; background: var(--surface); padding: .6rem 1rem; }
.skip:focus { top: .5rem; }
.site-header { border-bottom: 1px solid var(--border); }
.header-inner { min-height: 76px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .65rem; width: fit-content; font-size: 1.32rem; font-weight: 750; color: var(--ink); text-decoration: none; }
nav { display: flex; align-items: center; gap: clamp(.75rem, 3vw, 2rem); }
nav a { display: inline-block; color: var(--muted); text-decoration: none; padding: .55rem .15rem; border-bottom: 2px solid transparent; }
nav a[aria-current="page"] { color: var(--ink); border-color: var(--mint); font-weight: 650; }
.header-note { justify-self: end; color: var(--muted); font-size: .82rem; }
.header-extras { display: flex; align-items: center; justify-content: end; gap: .8rem; min-width: 0; }
.lab-menu { position: relative; font-size: .85rem; }
.lab-menu summary { padding: .45rem .55rem; border: 1px solid var(--border); border-radius: 8px; }
.lab-menu nav { display: grid; gap: .1rem; position: absolute; right: 0; z-index: 3; width: max-content; min-width: 13rem; padding: .5rem; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; box-shadow: 0 8px 22px rgb(16 42 38 / .12); }
.lab-menu nav a { padding: .45rem .65rem; }
main { padding-block: var(--space) 3.5rem; min-height: 68vh; }
main:focus { outline: none; }
.hero { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(1.5rem, 5vw, 5rem); align-items: center; padding-block: clamp(2rem, 5.5vw, 5.5rem); }
.hero h1 { max-width: 14ch; font-size: clamp(2.55rem, 5.2vw, 4.65rem); line-height: 1.06; margin-block: 1rem 1.35rem; }
.hero .lead { font-size: clamp(1rem, 1.55vw, 1.25rem); max-width: 42ch; margin-bottom: 1.5rem; }
.lead, .muted { color: var(--muted); }
.eyebrow { color: var(--green); font-size: .79rem; font-weight: 750; letter-spacing: .045em; text-transform: uppercase; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: .65rem; }
.button, button {
  display: inline-flex; align-items: center; justify-content: center; min-height: 44px;
  background: var(--action); border: 1px solid var(--action); border-radius: 10px; color: var(--action-text);
  font: inherit; font-size: .94rem; font-weight: 650; padding: .6rem 1.15rem; text-decoration: none; cursor: pointer;
}
.button:hover, button:hover { background: var(--action-hover); color: var(--action-text); }
button:disabled { opacity: .55; cursor: default; }
button[hidden] { display: none; }
.secondary { background: var(--surface); color: var(--ink); border-color: var(--control); }
.secondary:hover { background: var(--bg); color: var(--ink); }
.card { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); padding: var(--space); min-width: 0; }
.hero-amount { color: var(--ink); font-size: clamp(1.75rem, 3.4vw, 2.9rem); font-weight: 780; line-height: 1.15; margin: .25rem 0 1rem; letter-spacing: -.035em; }
.section { margin-top: var(--space); }
.cards { display: grid; gap: 1rem; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.site-footer { border-top: 1px solid var(--border); color: var(--muted); font-size: .85rem; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem 2rem; padding-block: 1.6rem; }
.footer-inner strong { color: var(--ink); }
.chart { margin: .6rem 0 0; }
.chart svg { display: block; width: 100%; height: auto; }
.chart text { fill: var(--muted); font: 16px var(--font); }
.chart line.grid { stroke: var(--border); }
.legend { display: flex; flex-wrap: wrap; gap: .4rem 1rem; margin-top: .4rem; color: var(--muted); font-size: .83rem; }
.legend span { display: inline-flex; align-items: center; gap: .35rem; }
.legend i { width: 1em; border-top: 2px solid var(--swatch); }
.chart-readout { font-size: .85rem; color: var(--muted); }
.chart-controls { margin-top: .9rem; display: grid; gap: .25rem; }
.chart-controls input { width: 100%; accent-color: var(--green); }
.sim-layout { display: grid; grid-template-columns: minmax(240px, .56fr) minmax(0, 1fr); align-items: start; gap: var(--space); }
.form-title { font-size: clamp(1.4rem, 2.2vw, 1.9rem); }
.stacked { display: grid; grid-template-columns: minmax(0, 1fr); gap: .9rem; align-content: start; }
.field { display: grid; align-content: start; gap: .25rem; min-width: 0; }
.field label { font-size: .9rem; font-weight: 650; }
.field small { color: var(--muted); line-height: 1.35; }
.field input, .field select {
  width: 100%; min-width: 0; min-height: 44px; padding: .55rem .8rem; border: 1px solid var(--control);
  border-radius: 10px; background: var(--surface); color: var(--text); font: inherit;
}
.field [aria-invalid="true"] { border-color: var(--danger); }
.error { color: var(--danger); }
.error:empty, [role="status"]:empty { display: none; }
.eyebrow:empty { display: none; }
.metric-grid { display: grid; grid-template-columns: 1.25fr 1fr 1fr; gap: clamp(.65rem, 1.5vw, 1.25rem); }
.metric { padding: clamp(.75rem, 2vw, 1.6rem); min-height: 8.5rem; }
.metric p { color: var(--muted); font-size: .9rem; margin-bottom: .25rem; }
.metric strong { display: block; font-size: clamp(1.1rem, 1.8vw, 1.7rem); line-height: 1.12; overflow-wrap: anywhere; }
.metric.profit strong { color: var(--green); }
.metric.emphasis { background: var(--emphasis); border-color: var(--emphasis); color: var(--mint); }
.metric.emphasis p { color: #d8e6df; }
.metric.emphasis strong { font-size: clamp(1.5rem, 2.65vw, 2.65rem); letter-spacing: -.035em; }
.chart-options { display: flex; gap: .5rem 1.25rem; flex-wrap: wrap; margin: 1rem 0 .6rem; color: var(--muted); }
.chart-options input { accent-color: var(--green); }
summary { cursor: pointer; color: var(--ink); font-weight: 700; }
.table-wrap { max-width: 100%; overflow-x: auto; margin-top: .75rem; }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { padding: .65rem .75rem; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
thead th { color: var(--ink); background: var(--bg); }
.record-list { list-style: none; padding: 0; margin: 0; }
.record-list li { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: .75rem; padding-block: .75rem; }
.record-list li + li { border-top: 1px solid var(--border); }
.comparison-bars { display: grid; gap: clamp(1rem, 2.4vw, 2rem); }
.bar-row { display: grid; grid-template-columns: minmax(7.5rem, 1fr) 5fr minmax(7rem, auto); align-items: center; gap: 1rem; }
.bar-row strong { overflow-wrap: anywhere; }
.bar-row strong:last-child { text-align: right; font-size: clamp(1rem, 2vw, 1.5rem); }
.bar-track { background: var(--bar-bg); border-radius: .55rem; height: clamp(1.15rem, 3.2vw, 2.5rem); overflow: hidden; }
.bar-track div { height: 100%; border-radius: inherit; }
.modality { padding: clamp(1rem, 2vw, 1.4rem); }
.modality h2 { font-size: 1.12rem; }
dialog { width: min(92%, 520px); max-height: 90vh; padding: var(--space); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text); background: var(--surface); }
dialog::backdrop { background: rgb(16 42 38 / .55); }
dialog form { display: grid; gap: .9rem; }
.two-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; }
.portfolio-metrics { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.distribution { list-style: none; margin: 0; padding: 0; }
.distribution li { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: .35rem .75rem; padding-block: .45rem; }
.distribution .bar-track { grid-column: 1 / -1; height: .65rem; }
.positive { color: var(--green); }
.negative { color: var(--danger); }
.text-button { background: transparent; border: none; padding: .15rem .1rem; color: var(--green); text-decoration: underline; text-underline-offset: .18em; }
.text-button:hover { color: var(--ink); background: transparent; }
.small-button { padding-inline: .65rem; }
fieldset { min-width: 0; margin: 0; padding: 1rem; border: 1px solid var(--border); border-radius: 12px; }
legend { color: var(--ink); font-weight: 700; padding-inline: .35rem; }
progress { display: block; width: 100%; margin: .5rem 0 1rem; accent-color: var(--green); }
.quiz-choice { justify-content: start; text-align: left; }
.quiz-choice[aria-pressed="true"] { border-color: var(--green); outline: 1px solid var(--green); opacity: 1; }
.quiz-question [data-feedback] { margin-block: .15rem 0; }
@media (prefers-reduced-motion: no-preference) {
  .button, button { transition: background-color .12s ease; }
}
@media (max-width: 900px) {
  .sim-layout { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .hero, .cards, .two-cards { grid-template-columns: 1fr; }
  .hero { padding-top: 1rem; }
  .hero h1 { max-width: 16ch; }
  .bar-row { grid-template-columns: minmax(0, 1fr) auto; gap: .35rem .75rem; }
  .bar-track { grid-row: 2; grid-column: 1 / -1; }
  .bar-row strong:last-child { grid-column: 2; grid-row: 1; }
}
@media (max-width: 600px) {
  .header-inner { grid-template-columns: 1fr auto; gap: .25rem .6rem; padding-top: .7rem; }
  nav { grid-row: 2; grid-column: 1 / -1; }
  .header-note { grid-row: 1; grid-column: 2; }
  .header-extras { grid-row: 1; grid-column: 2; }
  .header-extras .header-note { display: none; }
  .metric-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metric { min-height: auto; }
  .metric.emphasis { grid-column: 1 / -1; }
  .chart text { font-size: 22px; }
}
@media (min-width: 601px) and (max-width: 920px) {
  .header-extras .header-note { display: none; }
}