:root {
  color-scheme: light;
  --bg: #f6f6f4; --surface: #fcfcfb; --line: #e2e1dc; --ink: #0b0b0b; --ink-2: #52514e; --ink-3: #6f6e69;
  --accent: #2a78d6; --good: #0a7a3e; --good-bg: #e4f4ea; --warn: #8a5a00; --warn-bg: #fbf0d9; --bad: #b3261e; --bad-bg: #fbe6e4;
  --changed: #fff0b8;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #111110; --surface: #1a1a19; --line: #33322f; --ink: #f0efec; --ink-2: #c3c2b7; --ink-3: #9a998f;
    --accent: #3987e5; --good: #6fd49a; --good-bg: #16301f; --warn: #e6b65c; --warn-bg: #33270f; --bad: #f19a93; --bad-bg: #3a1a17;
    --changed: #4a3d0c;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--accent); }
h1 { font-size: 1.5rem; margin: 0 0 .25rem; }
h2 { font-size: 1.05rem; margin: 0 0 .75rem; }
.nav { display: flex; flex-wrap: wrap; align-items: center; gap: .25rem 1rem; padding: .75rem 16px; background: var(--surface); border-bottom: 1px solid var(--line); }
.nav a { text-decoration: none; color: var(--ink-2); padding: .25rem 0; }
.nav a.on { color: var(--ink); font-weight: 600; }
.nav .nav-home { font-weight: 700; color: var(--ink); margin-right: auto; }
.subnav { display: flex; flex-wrap: wrap; gap: 0 1rem; padding: .5rem 16px; border-bottom: 1px solid var(--line); font-size: .9375rem; }
.subnav a { text-decoration: none; color: var(--ink-2); padding: .25rem 0; }
.subnav .subnav-home { font-weight: 600; color: var(--ink); }
.main { max-width: 960px; margin: 0 auto; padding: 16px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
.muted { color: var(--ink-3); }
.small { font-size: .875rem; }
.flash { background: var(--good-bg); color: var(--good); padding: .6rem .8rem; border-radius: 8px; }
.error { background: var(--bad-bg); color: var(--bad); padding: .6rem .8rem; border-radius: 8px; }
.state { display: flex; gap: .75rem; align-items: flex-start; }
.state-icon { flex: none; width: 2rem; height: 2rem; border-radius: 50%; display: grid; place-items: center; font-weight: 700; }
.state-title { font-size: 1.15rem; font-weight: 600; }
.state.good .state-icon { background: var(--good-bg); color: var(--good); }
.state.warn .state-icon { background: var(--warn-bg); color: var(--warn); }
.state.bad .state-icon { background: var(--bad-bg); color: var(--bad); }
.state.muted .state-icon { background: var(--line); color: var(--ink-2); }
.steps { list-style: none; margin: 0; padding: 0; }
.steps li { display: flex; gap: .6rem; padding: .3rem 0; }
.steps .tick { flex: none; width: 1.25rem; font-weight: 700; color: var(--ink-3); }
.steps .done .tick { color: var(--good); }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: .25rem 1rem; margin: 0; }
.facts dt { color: var(--ink-3); }
.facts dd { margin: 0; overflow-wrap: anywhere; }
.values { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 10px; }
.value { display: block; text-decoration: none; color: inherit; border: 1px solid var(--line); border-radius: 8px; padding: .6rem .75rem; }
.value-name { color: var(--ink-2); font-size: .875rem; }
.value-number { font-size: 1.35rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.tag { font-size: .75rem; color: var(--warn); }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: .9rem; }
th, td { text-align: left; padding: .35rem .6rem; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--ink-3); font-weight: 500; }
.num { font-variant-numeric: tabular-nums; text-align: right; }
.grid td, .grid th { font: 12.5px/1.3 ui-monospace, Menlo, monospace; text-align: right; padding: .2rem .35rem; border: 0; }
.grid a { color: inherit; text-decoration: none; display: block; }
.grid td.zero a { color: var(--ink-3); opacity: .55; }
.grid td.changed { background: var(--changed); font-weight: 600; }
.tabs { display: flex; flex-wrap: wrap; gap: .5rem; margin: 0 0 .75rem; }
.tabs a { padding: .15rem .55rem; border-radius: 6px; border: 1px solid var(--line); text-decoration: none; color: var(--ink-2); font-size: .875rem; }
.tabs a.on { background: var(--ink); color: var(--surface); border-color: var(--ink); }
form.stack { display: grid; gap: .75rem; max-width: 460px; }
form.row { display: flex; flex-wrap: wrap; gap: .5rem; align-items: end; }
label { display: grid; gap: .2rem; font-size: .875rem; color: var(--ink-2); }
label.check { display: flex; gap: .5rem; align-items: center; }
input, select, textarea { font: inherit; color: var(--ink); background: var(--surface); padding: .45rem .55rem; border: 1px solid var(--ink-3); border-radius: 6px; }
input[type=checkbox] { width: 1.15rem; height: 1.15rem; }
button, input[type=submit] { font: inherit; padding: .45rem .9rem; border-radius: 6px; border: 1px solid var(--ink); background: var(--ink); color: var(--surface); cursor: pointer; }
button.quiet { background: transparent; color: var(--ink); }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.chart { width: 100%; height: auto; display: block; touch-action: pan-y; }
.chart .axis { stroke: var(--line); stroke-width: 1; }
.chart .tick-label { fill: var(--ink-3); font-size: 11px; }
.chart .series { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart .cross { stroke: var(--ink-3); stroke-width: 1; display: none; }
.chart .dot { fill: var(--accent); stroke: var(--surface); stroke-width: 2; display: none; }
.tip { min-height: 1.4em; font-variant-numeric: tabular-nums; color: var(--ink-2); font-size: .875rem; }
.hello { font-size: 1.1rem; margin: 0 0 1rem; }

/* Questions and guides. Helio reads these on a phone, often outdoors: bigger type, a short
   line length, and tap targets a thumb can hit. Inputs stay at 16px so iOS doesn't zoom in. */
.reading { max-width: 680px; margin: 0 auto; }
.greeting { font-size: 2rem; }
.lead { font-size: 1.0625rem; color: var(--ink-2); margin: .25rem 0 1.25rem; }
.crumb { margin: 0 0 .75rem; font-size: .9375rem; }
.crumb a { text-decoration: none; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px; }
.list { display: grid; gap: 12px; }
.tile { display: grid; gap: .3rem; align-content: start; padding: 16px; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; color: inherit; text-decoration: none; }
.tile:hover { border-color: var(--ink-3); }
.tile-label { font-size: .8125rem; color: var(--ink-3); }
.tile-title { font-size: 1.125rem; line-height: 1.3; }
.state-line { font-size: .9375rem; color: var(--ink-2); }
.state-line.good { color: var(--good); }
.state-line.warn { color: var(--warn); }
.state-line.bad { color: var(--bad); }
.progress { font-size: .9375rem; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.progress.done { color: var(--good); font-weight: 600; }
.notice { background: var(--warn-bg); color: var(--warn); padding: .7rem .9rem; border-radius: 8px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

.question h2 { font-size: 1.125rem; line-height: 1.35; margin-bottom: .4rem; }
.question-number { color: var(--ink-3); font-weight: 500; }
.question > .muted { margin: 0 0 .9rem; color: var(--ink-2); }
.answer-form { display: grid; gap: .9rem; }
.answer-form label { font-size: .9375rem; }
.answer-form textarea { width: 100%; resize: vertical; }
.choices { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; border: 0; }
.choice { position: relative; display: block; flex: 1 1 5.5rem; }
.choice input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; }
.choice span { display: block; padding: .7rem .5rem; text-align: center; font-size: 1rem; color: var(--ink); background: var(--surface); border: 1px solid var(--ink-3); border-radius: 8px; }
.choice input:checked + span { background: var(--ink); border-color: var(--ink); color: var(--surface); font-weight: 600; }
.choice input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }
input.file { width: 100%; padding: .6rem; }
/* Outlined: a page holds one of these per question, and five solid bars would drown the questions. */
input[type=submit].wide { width: 100%; padding: .7rem 1rem; font-weight: 600; border-radius: 8px; background: transparent; color: var(--ink); border: 1.5px solid var(--accent); }
input[type=submit].wide:hover { background: var(--accent); color: #fff; }
input[type=submit]:disabled { opacity: .6; cursor: progress; }
@media (min-width: 560px) { input[type=submit].wide { width: auto; min-width: 10rem; justify-self: start; } }

.submitted { border-left: 3px solid var(--good); padding-left: .85rem; }
.submitted p { margin: 0 0 .4rem; }
.submitted-when { color: var(--good); font-size: .875rem; }
.submitted-choice { font-weight: 600; font-size: 1.0625rem; }
.submitted-body { overflow-wrap: anywhere; }
.photos { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 8px; margin-top: .6rem; }
.photos img { display: block; width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 8px; background: var(--line); }
.change { margin-top: .9rem; }
.change summary { cursor: pointer; color: var(--accent); padding: .3rem 0; }
.change[open] > .answer-form { margin-top: .6rem; }
.previous { list-style: none; margin: .4rem 0 0; padding: 0; }
.previous li { padding: .5rem 0; border-top: 1px solid var(--line); overflow-wrap: anywhere; }

.prose { font-size: 1.0625rem; line-height: 1.6; }
.prose h2 { font-size: 1.3rem; margin: 2rem 0 .6rem; }
.prose h3 { font-size: 1.1rem; margin: 1.5rem 0 .5rem; }
.prose p, .prose ul, .prose ol, .prose blockquote { margin: 0 0 1rem; }
.prose ul, .prose ol { padding-left: 1.4rem; }
.prose li { margin-bottom: .35rem; }
.prose ul:has(input[type=checkbox]) { list-style: none; padding-left: 0; }
.prose li input[type=checkbox] { margin: 0 .5rem 0 0; vertical-align: -.1em; }
.prose blockquote { padding: .7rem .9rem; background: var(--surface); border-left: 3px solid var(--line); }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }
.prose code { font-size: .9em; overflow-wrap: anywhere; }
.prose table { display: block; overflow-x: auto; }

@media print {
  .nav, .subnav, .crumb { display: none; }
  body { background: #fff; color: #000; }
  .prose { font-size: 11pt; }
}