/* Plug-in Solar Guide: one calm stylesheet. System fonts, light + dark, mobile first. */
:root {
  --bg: #fbfaf6; --panel: #ffffff; --ink: #1d2124; --muted: #5b6268; --line: #e4e1d8;
  --accent: #b4650a; --accent-ink: #7a4300; --link: #0b5d8a; --soft: #f4f1e8;
  --ok: #2f7d4f; --soon: #2d6fa3; --pending: #c08a1c; --none: #c9c6bd;
  --ok-bg: #e7f3ec; --soon-bg: #e6eff7; --pending-bg: #fbf1dc;
  --radius: 10px; --max: 46rem; --wide: 68rem;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15181b; --panel: #1c2024; --ink: #e8e6e1; --muted: #a3a9ae; --line: #2e3439;
    --accent: #f0a74a; --accent-ink: #f6c27f; --link: #7cc3ef; --soft: #20252a;
    --ok: #5fbf86; --soon: #6fa9db; --pending: #e0b250; --none: #4a5056;
    --ok-bg: #1d2e24; --soon-bg: #1c2833; --pending-bg: #2f2919;
  }
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--link); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
img, svg { max-width: 100%; height: auto; }
h1, h2, h3 { line-height: 1.25; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.7rem, 4.5vw, 2.4rem); margin: .2em 0 .4em; }
h2 { font-size: 1.35rem; margin: 2em 0 .5em; }
h3 { font-size: 1.08rem; margin: 1.5em 0 .4em; }
p, ul, ol, table { margin: 0 0 1em; }
small, .muted { color: var(--muted); }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 1rem; top: 1rem; background: var(--panel); padding: .5rem 1rem; z-index: 9; }

/* layout */
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 1.1rem; }
.wide { max-width: var(--wide); }
header.site { border-bottom: 1px solid var(--line); background: var(--panel); }
header.site .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem 1.2rem; padding-top: .7rem; padding-bottom: .7rem; max-width: var(--wide); }
.brand { font-weight: 700; color: var(--ink); text-decoration: none; display: flex; align-items: center; gap: .5rem; margin-right: auto; }
.brand svg { width: 28px; height: 28px; }
nav.top a { color: var(--ink); text-decoration: none; font-size: .95rem; padding: .2rem 0; }
nav.top a:hover, nav.top a[aria-current] { color: var(--accent-ink); text-decoration: underline; }
nav.top { display: flex; flex-wrap: wrap; gap: .2rem 1rem; }
main { padding: 1.2rem 0 3rem; }
footer.site { border-top: 1px solid var(--line); background: var(--panel); font-size: .9rem; color: var(--muted); padding: 1.6rem 0 2.4rem; }
footer.site .wrap { max-width: var(--wide); }
footer.site a { color: var(--muted); }
.crumbs { font-size: .85rem; color: var(--muted); margin: .6rem 0 0; }
.crumbs ol { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: .3rem; }
.crumbs li + li::before { content: "›"; margin-right: .3rem; }
.crumbs a { color: var(--muted); }

/* blocks */
.lede { font-size: 1.12rem; color: var(--muted); }
.answer { border-left: 5px solid var(--ok); background: var(--ok-bg); padding: .9rem 1.1rem; border-radius: 0 var(--radius) var(--radius) 0; margin: 1rem 0 1.4rem; }
.answer.soon { border-color: var(--soon); background: var(--soon-bg); }
.answer.pending { border-color: var(--pending); background: var(--pending-bg); }
.answer strong:first-child { display: block; font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-bottom: .2rem; }
.answer p { margin: 0; font-size: 1.05rem; }
.checked { font-size: .85rem; color: var(--muted); margin: -.6rem 0 1.2rem; }
.box { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.2rem; margin: 1.2rem 0; }
.box h2, .box h3 { margin-top: .2rem; }
.grid { display: grid; gap: 1rem; }
@media (min-width: 720px) { .grid.two { grid-template-columns: 1fr 1fr; } .grid.three { grid-template-columns: repeat(3, 1fr); } }
.card { display: block; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.1rem; color: var(--ink); text-decoration: none; }
a.card:hover { border-color: var(--accent); }
.card h3 { margin: 0 0 .3rem; color: var(--link); }
.card p { margin: 0; color: var(--muted); font-size: .95rem; }
.note { font-size: .92rem; color: var(--muted); border-top: 1px dashed var(--line); padding-top: .8rem; }
.warn { background: var(--pending-bg); border-radius: var(--radius); padding: .8rem 1rem; font-size: .95rem; }
.sources { font-size: .9rem; }
.sources li { margin-bottom: .3rem; }
.tag { display: inline-block; font-size: .72rem; font-weight: 600; letter-spacing: .03em; padding: .05rem .45rem; border-radius: 99px; vertical-align: 2px; white-space: nowrap; }
.tag.official { background: var(--ok-bg); color: var(--ok); }
.tag.secondary { background: var(--pending-bg); color: var(--accent-ink); }
.tag.law { background: var(--ok-bg); color: var(--ok); }
.tag.soon { background: var(--soon-bg); color: var(--soon); }
.tag.pending { background: var(--pending-bg); color: var(--accent-ink); }

/* tables */
.tablewrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 0 0 1.2rem; }
table { border-collapse: collapse; width: 100%; font-size: .95rem; background: var(--panel); }
th, td { text-align: left; vertical-align: top; padding: .55rem .7rem; border-bottom: 1px solid var(--line); }
th { font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; }
table.facts th[scope=row] { text-transform: none; letter-spacing: 0; font-size: .92rem; color: var(--ink); width: 34%; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

/* map */
.map { margin: 1rem 0 .4rem; }
.map svg { width: 100%; display: block; }
.map a rect { stroke: var(--bg); stroke-width: 2; transition: opacity .15s; }
.map a:hover rect, .map a:focus rect { opacity: .8; stroke: var(--ink); }
.map text { font: 600 13px system-ui, sans-serif; fill: #fff; pointer-events: none; }
.map .none rect { fill: var(--none); } .map .none text { fill: var(--muted); }
.map .law rect { fill: var(--ok); } .map .soon rect { fill: var(--soon); } .map .pending rect { fill: var(--pending); }
.legend { display: flex; flex-wrap: wrap; gap: .4rem 1.1rem; font-size: .88rem; color: var(--muted); padding: 0; list-style: none; }
.legend i { display: inline-block; width: .85em; height: .85em; border-radius: 3px; margin-right: .35em; vertical-align: -1px; }

/* diagram */
figure { margin: 1.4rem 0; }
figcaption { font-size: .88rem; color: var(--muted); margin-top: .4rem; }
.diagram { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: .6rem; }
.diagram text { font: 13px system-ui, sans-serif; fill: var(--ink); }
.diagram .stroke { stroke: var(--ink); fill: none; stroke-width: 2; }
.diagram .panel { fill: #2d4b6b; } .diagram .sun { fill: var(--accent); }
.diagram .flow { stroke: var(--accent); stroke-width: 3; fill: none; stroke-dasharray: 6 5; }
.diagram .box2 { fill: var(--soft); stroke: var(--ink); stroke-width: 1.5; }

/* calculator */
form.calc { display: grid; gap: .9rem; }
@media (min-width: 640px) { form.calc { grid-template-columns: 1fr 1fr; } }
label { font-weight: 600; font-size: .92rem; display: block; margin-bottom: .25rem; }
select, input[type=number] { width: 100%; font: inherit; padding: .5rem .6rem; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); color: var(--ink); }
.hint { font-size: .82rem; color: var(--muted); margin-top: .2rem; }
.result { margin-top: 1rem; }
.big { font-size: 2rem; font-weight: 700; color: var(--accent-ink); line-height: 1.1; }
.working { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .88rem; background: var(--soft); padding: .7rem .9rem; border-radius: 8px; white-space: pre-wrap; }
.btn { display: inline-block; background: var(--accent); color: #fff; border-radius: 8px; padding: .55rem 1rem; text-decoration: none; font-weight: 600; }
.btn:hover { background: var(--accent-ink); color: #fff; }
.disclosure[hidden] { display: none; }
.disclosure { font-size: .88rem; color: var(--muted); border: 1px solid var(--line); border-radius: var(--radius); padding: .7rem 1rem; margin: 1rem 0; }
details { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: .7rem 1rem; margin: .6rem 0; }
summary { cursor: pointer; font-weight: 600; }
details p:last-child { margin-bottom: 0; }
.hero { padding: 1.2rem 0 .4rem; }
.hero h1 { font-size: clamp(1.9rem, 5vw, 2.8rem); max-width: 22ch; }