:root {
  --bg: #edf0ee;
  --paper: #f8faf8;
  --ink: #18201d;
  --muted: #56645e;
  --rule: #c5cec9;
  --accent: #23498f;
  --mark: #f3e08c;
  --mark-ink: #18201d;
  --s1: #23498f;
  --s2: #9a3d6b;
  --s3: #2c7a4b;
  --focus: #23498f;
  --shade: rgba(24, 32, 29, .28);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121816; --paper: #1a2220; --ink: #e2e9e5; --muted: #9ba8a2; --rule: #2f3a36;
    --accent: #a3bcf4; --mark: #4f4616; --mark-ink: #f4ecc4; --s1: #a3bcf4; --s2: #e39cc2; --s3: #84cfa0; --focus: #a3bcf4; --shade: rgba(0, 0, 0, .7);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #121816; --paper: #1a2220; --ink: #e2e9e5; --muted: #9ba8a2; --rule: #2f3a36;
  --accent: #a3bcf4; --mark: #4f4616; --mark-ink: #f4ecc4; --s1: #a3bcf4; --s2: #e39cc2; --s3: #84cfa0; --focus: #a3bcf4; --shade: rgba(0, 0, 0, .7);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.55 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); text-underline-offset: 2px; }
a:focus-visible, input:focus-visible, select:focus-visible, label:focus-within { outline: 2px solid var(--focus); outline-offset: 2px; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }

/* header */
.top { border-bottom: 1px solid var(--rule); }
.top .wrap { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 24px; padding-top: 14px; padding-bottom: 12px; }
.brand { font-weight: 700; font-size: 1.05rem; color: var(--ink); text-decoration: none; letter-spacing: -0.01em; }
.brand span { font-variant-numeric: tabular-nums; color: var(--muted); font-weight: 500; }
.top nav { display: flex; flex-wrap: wrap; gap: 4px 18px; font-size: .94rem; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a:hover, .top nav a[aria-current] { color: var(--ink); text-decoration: underline; }

.disclose { font-size: .86rem; color: var(--muted); padding: 8px 0 0; }
.disclose strong { color: var(--ink); font-weight: 600; }

/* type */
h1 { font-size: clamp(1.7rem, 4.2vw, 2.45rem); line-height: 1.12; letter-spacing: -0.025em; margin: 22px 0 8px; font-weight: 700; max-width: 22ch; }
h2 { font-size: 1.32rem; letter-spacing: -0.015em; margin: 40px 0 10px; line-height: 1.25; }
h3 { font-size: 1.05rem; margin: 26px 0 6px; }
p, li { max-width: 68ch; }
.lede { font-size: 1.08rem; color: var(--muted); margin: 0 0 18px; max-width: 60ch; }
.muted { color: var(--muted); }
.small { font-size: .88rem; }
.checked { font-size: .86rem; color: var(--muted); }

/* calculator layout */
.calc { display: grid; grid-template-columns: minmax(250px, 310px) 1fr; gap: 20px; align-items: start; margin: 18px 0 8px; }
.inputs { background: var(--paper); border: 1px solid var(--rule); border-radius: 10px; padding: 16px; position: sticky; top: 12px; }
.inputs fieldset { border: 0; padding: 0; margin: 0 0 14px; }
.inputs legend, .inputs label.f { display: block; font-weight: 600; font-size: .93rem; margin-bottom: 4px; }
.inputs .hint { font-size: .82rem; color: var(--muted); margin: 3px 0 0; }
.inputs input[type=number], .inputs input[type=text], .inputs select {
  width: 100%; font: inherit; font-size: 1.35rem; font-variant-numeric: tabular-nums; padding: 7px 10px;
  background: var(--bg); color: var(--ink); border: 1px solid var(--rule); border-radius: 7px;
}
.inputs select { font-size: 1rem; }
.seg { display: flex; border: 1px solid var(--rule); border-radius: 7px; overflow: hidden; }
.seg label { flex: 1; text-align: center; padding: 7px 6px; font-size: .9rem; cursor: pointer; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg label:has(input:checked) { background: var(--ink); color: var(--paper); font-weight: 600; }
.check { display: flex; gap: 8px; align-items: flex-start; font-size: .9rem; }
.check input { margin-top: 4px; }

/* statement (results) */
.statement { background: var(--paper); border: 1px solid var(--rule); border-radius: 10px; padding: 6px 16px 12px; overflow-x: auto; }
.statement caption { text-align: left; font-size: .9rem; color: var(--muted); padding: 10px 0 6px; caption-side: top; }
table { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
.statement th, .statement td { padding: 10px 8px; border-bottom: 1px dotted var(--rule); vertical-align: top; text-align: left; }
.statement thead th { font-size: .8rem; color: var(--muted); font-weight: 600; border-bottom: 1px solid var(--rule); }
.statement tbody th { font-weight: 600; }
.statement td.n, .statement th.n { text-align: right; white-space: nowrap; }
.statement td.total { font-size: 1.22rem; font-weight: 650; }
.plan { font-weight: 450; color: var(--muted); }
.tier { display: block; font-weight: 400; font-size: .8rem; color: var(--muted); }
a.src { font-size: .76rem; margin-left: 4px; }
tr.low td.total, tr.pick td.total { background: linear-gradient(transparent 18%, var(--mark) 18%, var(--mark) 82%, transparent 82%); color: var(--mark-ink); }
.tag { display: inline-block; margin-left: 6px; font-size: .7rem; font-weight: 600; color: var(--muted); vertical-align: middle; }
tr.na th, tr.na td { color: var(--muted); font-weight: 400; }
.key { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 7px; }
.sum { font-size: .9rem; color: var(--muted); margin: 8px 2px 0; }
sup { color: var(--muted); }

/* static tables */
.table { overflow-x: auto; margin: 10px 0; border: 1px solid var(--rule); border-radius: 10px; background: var(--paper); }
.table th, .table td { padding: 8px 10px; border-bottom: 1px solid var(--rule); text-align: left; vertical-align: top; font-size: .93rem; }
.table thead th { font-size: .8rem; color: var(--muted); }
.table td.n, .table th.n { text-align: right; white-space: nowrap; }
.table tr:last-child td, .table tr:last-child th { border-bottom: 0; }
.table th.cat { background: var(--bg); font-size: .8rem; color: var(--muted); font-weight: 600; }

/* wide tables: scroll inside their own box, with a shadow on the side that has more columns */
.table, .statement {
  background:
    linear-gradient(to right, var(--paper) 30%, transparent) left center / 28px 100% no-repeat local,
    linear-gradient(to left, var(--paper) 30%, transparent) right center / 28px 100% no-repeat local,
    radial-gradient(farthest-side at 0 50%, var(--shade), transparent) left center / 14px 100% no-repeat scroll,
    radial-gradient(farthest-side at 100% 50%, var(--shade), transparent) right center / 14px 100% no-repeat scroll,
    var(--paper);
  -webkit-overflow-scrolling: touch;
}
.table:focus-visible, .statement:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.scroll-hint { margin: 10px 2px -4px; font-size: .8rem; color: var(--muted); }
.scroll-hint[hidden] { display: none; }

/* chart */
.chart { width: 100%; height: auto; display: block; margin-top: 8px; }
.chart .grid { stroke: var(--rule); stroke-width: 1; }
.chart .ax { fill: var(--muted); font-size: 12px; }
.chart .now { stroke: var(--ink); stroke-dasharray: 3 4; stroke-width: 1; }

/* how it's calculated */
details.how { margin: 22px 0; border-top: 1px solid var(--rule); padding-top: 10px; }
details.how summary { cursor: pointer; font-weight: 600; }
details.how code, code { font-size: .9em; background: var(--paper); border: 1px solid var(--rule); border-radius: 4px; padding: 0 4px; }

/* steps */
ol.steps { padding-left: 1.3em; }
ol.steps li { margin: 0 0 14px; }
ol.steps li strong { display: block; }
.status { font-size: .8rem; font-weight: 600; white-space: nowrap; }
.status.moves { color: var(--s3); }
.status.changes { color: var(--accent); }
.status.rebuild, .status.stays { color: var(--s2); }

/* index */
.tools { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin: 14px 0 10px; }
.tools h2 { margin-top: 10px; }
.tools ul { list-style: none; padding: 0; margin: 0; }
.tools li { padding: 12px 0; border-top: 1px solid var(--rule); }
.tools li a { font-weight: 600; font-size: 1.05rem; }
.tools li p { margin: 2px 0 0; color: var(--muted); font-size: .93rem; }

.ref { font-size: .8rem; color: var(--muted); margin-left: 4px; white-space: nowrap; }
.commission { display: inline-block; font-size: .78rem; color: var(--muted); margin-left: 6px; }

footer { border-top: 1px solid var(--rule); margin-top: 56px; padding: 18px 0 34px; font-size: .86rem; color: var(--muted); }
footer a { color: var(--muted); }
footer p { margin: 4px 0; max-width: none; }
footer .links { display: flex; flex-wrap: wrap; gap: 4px 18px; }
ul.small a, p.small a, .table td a { overflow-wrap: anywhere; }
.sum.hint-sm { display: none; }

@media (max-width: 760px) {
  .calc { grid-template-columns: 1fr; }
  .inputs { position: static; }
  .tools { grid-template-columns: 1fr; gap: 6px; }
  .statement { padding: 4px 10px 10px; }
  .statement th, .statement td { padding: 9px 5px; }
  .statement td.total { font-size: 1.08rem; }
  .hide-sm { display: none; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }