:root {
  --page: #EEF1F0;
  --envelope: #FCFCFA;
  --window: #F4F7F8;
  --ink: #14212E;
  --ink-soft: #4A5866;
  --rule: #C7D0D6;
  --tint: #3D5A80;
  --link: #1F4E8C;
  --lvl-3: #1C6B57;
  --lvl-2: #8A5A00;
  --lvl-1: #56636F;
  --lvl-0: #B3261E;
  --on-level: #FFFFFF;
  --focus: #1F4E8C;

  --font-text: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-record: "Martian Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --measure: 66ch;
  --gutter: 16px;
  --wrap: 1080px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --page: #101B25;
    --envelope: #16232F;
    --window: #1B2A37;
    --ink: #E6EBEE;
    --ink-soft: #A3B0BB;
    --rule: #2E3E4C;
    --tint: #7E9CC2;
    --link: #8DB8EE;
    --lvl-3: #5FC0A3;
    --lvl-2: #E0AE45;
    --lvl-1: #9AA8B4;
    --lvl-0: #F07A6E;
    --on-level: #101B25;
    --focus: #8DB8EE;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --page: #101B25; --envelope: #16232F; --window: #1B2A37; --ink: #E6EBEE; --ink-soft: #A3B0BB;
  --rule: #2E3E4C; --tint: #7E9CC2; --link: #8DB8EE; --lvl-3: #5FC0A3; --lvl-2: #E0AE45;
  --lvl-1: #9AA8B4; --lvl-0: #F07A6E; --on-level: #101B25; --focus: #8DB8EE; color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: var(--font-text);
  font-size: 1.0625rem;
  line-height: 1.55;
  font-variation-settings: "wdth" 100;
  font-feature-settings: "tnum" 0;
}
a { color: var(--link); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }


/* header */
.site-head { padding: 22px 0 18px; }
.site-head .wrap { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 10px 28px; }
.wordmark {
  font-weight: 800;
  font-variation-settings: "wdth" 125;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}
.site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 4px 22px; }
.site-nav a { color: var(--ink); text-decoration: none; font-size: 0.95rem; padding: 4px 0; border-bottom: 2px solid transparent; }
.site-nav a[aria-current="page"] { border-bottom-color: var(--ink); }
.site-nav a:hover { border-bottom-color: var(--rule); }

/* headings */
h1, h2, h3 { line-height: 1.12; margin: 0; }
h1 {
  font-weight: 800;
  font-variation-settings: "wdth" 118;
  font-size: clamp(2rem, 1.2rem + 3.6vw, 3.6rem);
  letter-spacing: -0.02em;
  max-width: 17ch;
}
h2 {
  font-weight: 750;
  font-variation-settings: "wdth" 112;
  font-size: clamp(1.45rem, 1.1rem + 1.4vw, 2rem);
  letter-spacing: -0.01em;
}
h3 { font-weight: 700; font-variation-settings: "wdth" 106; font-size: 1.12rem; }

/* checker */
.checker { padding: 28px 0 0; }
.checker .lede { max-width: 56ch; color: var(--ink-soft); margin: 16px 0 0; font-size: 1.12rem; }

.tint-band { position: relative; margin-top: 30px; padding: 40px 0 44px; isolation: isolate; }
.tint-band::before {
  content: "";
  position: absolute; inset: 0;
  background-color: var(--tint);
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='30' height='30'%3E%3Cg fill='none' stroke='black' stroke-width='1.2' stroke-linecap='round'%3E%3Cpath d='M2 7 l5 -4 l5 4 M17 22 l5 -4 l5 4'/%3E%3Cpath d='M9 16 q3.5 3.5 7 0 M24 1 q3.5 3.5 7 0 M-6 31 q3.5 3.5 7 0'/%3E%3C/g%3E%3Ccircle cx='23' cy='9' r='1.1'/%3E%3Ccircle cx='7' cy='25' r='1.1'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='30' height='30'%3E%3Cg fill='none' stroke='black' stroke-width='1.2' stroke-linecap='round'%3E%3Cpath d='M2 7 l5 -4 l5 4 M17 22 l5 -4 l5 4'/%3E%3Cpath d='M9 16 q3.5 3.5 7 0 M24 1 q3.5 3.5 7 0 M-6 31 q3.5 3.5 7 0'/%3E%3C/g%3E%3Ccircle cx='23' cy='9' r='1.1'/%3E%3Ccircle cx='7' cy='25' r='1.1'/%3E%3C/svg%3E");
  -webkit-mask-size: 30px 30px; mask-size: 30px 30px;
  opacity: 0.2;
  z-index: -1;
}

.envelope {
  background: var(--envelope);
  border: 1px solid var(--rule);
  border-radius: 3px;
  box-shadow: 0 1px 0 var(--rule), 0 2px 0 color-mix(in srgb, var(--rule) 55%, transparent);
}

.check-form { padding: 26px 26px 22px; max-width: 760px; }
.check-form label { display: block; font-weight: 650; margin-bottom: 8px; }
.window-row { display: flex; gap: 10px; flex-wrap: wrap; }
.window {
  flex: 1 1 280px;
  min-width: 0;
  font: inherit;
  font-family: var(--font-record);
  font-variation-settings: "wdth" 92;
  font-size: 1.05rem;
  color: var(--ink);
  background: var(--window);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 14px 16px;
}
.window:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.btn {
  font: inherit;
  font-weight: 700;
  font-variation-settings: "wdth" 112;
  background: var(--ink);
  color: var(--envelope);
  border: 0;
  border-radius: 2px;
  padding: 14px 26px;
  cursor: pointer;
}
.btn:hover { background: color-mix(in srgb, var(--ink) 86%, var(--tint)); }
.check-form .hint { margin: 12px 0 0; font-size: 0.9rem; color: var(--ink-soft); }

/* result */
.result { padding: 0 0 8px; }
.result-env { margin-top: -18px; position: relative; padding: 24px 26px 30px; }
.result-top { display: grid; grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: "info stamp"; gap: 8px 24px; align-items: start; }
.result-info { grid-area: info; min-width: 0; }
.result-top .postmark { grid-area: stamp; }
.checked-at { font-size: 0.9rem; color: var(--ink-soft); margin: 0; }
.address { margin-top: 26px; max-width: 34rem; }
.address .domain {
  font-family: var(--font-record);
  font-variation-settings: "wdth" 100;
  font-weight: 500;
  font-size: clamp(1.35rem, 1rem + 1.6vw, 2rem);
  line-height: 1.2;
  overflow-wrap: anywhere;
  margin: 0;
}
.address .org { margin: 4px 0 0; color: var(--ink-soft); }
.verdict { margin: 22px 0 0; font-size: 1.2rem; max-width: 46ch; }

.postmark { width: clamp(180px, 22vw, 268px); height: auto; transform: rotate(-7deg); transform-origin: 30% 50%; margin: -6px -8px 0 0; }
.postmark .pm-ring { fill: none; stroke: currentColor; stroke-width: 2.6; }
.postmark .pm-ring-thin { stroke-width: 1.3; }
.postmark .pm-arc { font-family: var(--font-text); font-size: 9.5px; font-weight: 700; font-variation-settings: "wdth" 80; letter-spacing: 0.14em; fill: currentColor; }
.postmark .pm-word { font-family: var(--font-text); font-size: 16.5px; font-weight: 850; font-variation-settings: "wdth" 62; letter-spacing: 0.04em; fill: currentColor; }
.postmark .pm-waves path { fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; }
.postmark-enforced { color: var(--lvl-3); }
.postmark-partial { color: var(--lvl-2); }
.postmark-monitoring { color: var(--lvl-1); }
.postmark-unprotected { color: var(--lvl-0); }

@media (prefers-reduced-motion: no-preference) {
  .result-env .postmark { animation: stamp-down 420ms cubic-bezier(.2,.9,.25,1.15) 180ms both; }
  @keyframes stamp-down {
    from { opacity: 0; transform: rotate(-12deg) scale(1.35); }
    to   { opacity: 1; transform: rotate(-7deg) scale(1); }
  }
}

.enclosures { margin-top: 30px; display: grid; gap: 18px; }
.enclosure { border-top: 1px solid var(--rule); padding-top: 18px; display: grid; align-items: start; gap: 14px 32px; grid-template-columns: minmax(0, 1fr); }
.enclosure h3 { display: flex; gap: 12px; align-items: baseline; flex-wrap: wrap; }
.enclosure h3 small { font-weight: 400; font-size: 0.9rem; color: var(--ink-soft); font-variation-settings: "wdth" 100; }
.record {
  margin: 0;
  font-family: var(--font-record);
  font-variation-settings: "wdth" 88;
  font-size: 0.86rem;
  line-height: 1.6;
  background: var(--window);
  border-left: 3px solid var(--tint);
  padding: 12px 14px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.reading { margin: 0; display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; font-size: 0.97rem; }
.reading dt { font-family: var(--font-record); font-variation-settings: "wdth" 88; font-size: 0.86rem; padding-top: 2px; }
.reading dd { margin: 0; }

.lookups { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; font-size: 0.95rem; }
.lookups .ticks { display: inline-flex; gap: 3px; }
.lookups .tick { width: 12px; height: 18px; border: 1.5px solid var(--ink); }
.lookups .tick.used { background: var(--ink); }

.fix-first { margin-top: 34px; }
.fix-first ol { list-style: none; counter-reset: fix; margin: 14px 0 0; padding: 0; display: grid; gap: 20px; }
.fix-first li { counter-increment: fix; display: grid; grid-template-columns: 2.2rem 1fr; gap: 4px 12px; }
.fix-first li::before {
  content: counter(fix);
  font-weight: 800; font-variation-settings: "wdth" 125; font-size: 1.35rem; line-height: 1.1;
  color: var(--ink-soft);
}
.fix-first .f-body { min-width: 0; }
.fix-first h4 { margin: 0; font-size: 1.05rem; font-weight: 700; display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.fix-first p { margin: 4px 0 0; max-width: var(--measure); }
.fix-first .record { margin-top: 10px; }

.sev { font-size: 0.82rem; font-weight: 650; display: inline-flex; align-items: center; gap: 6px; color: var(--ink-soft); }
.sev::before { content: ""; width: 10px; height: 10px; display: inline-block; border: 1.5px solid currentColor; }
.sev-high { color: var(--lvl-0); }
.sev-high::before { background: currentColor; }
.sev-medium { color: var(--lvl-2); }
.sev-medium::before { background: linear-gradient(135deg, currentColor 50%, transparent 50%); }
.sev-low::before { background: transparent; }
.sev-info::before { border-radius: 50%; }
.sev-good { color: var(--lvl-3); }
.sev-good::before { border-radius: 50%; background: currentColor; }

.also { margin-top: 34px; border-top: 1px solid var(--rule); padding-top: 18px; }
.also dl { margin: 12px 0 0; display: grid; grid-template-columns: max-content 1fr; gap: 8px 20px; }
.also dt { font-weight: 650; }
.also dd { margin: 0; color: var(--ink-soft); }

/* week */
.week { padding: 64px 0 24px; }
.week .when { font-size: 1rem; color: var(--ink-soft); margin: 0 0 10px; }
.headline-figure {
  margin: 0;
  font-weight: 750;
  font-variation-settings: "wdth" 112;
  font-size: clamp(1.6rem, 1.1rem + 2.2vw, 2.6rem);
  line-height: 1.15;
  max-width: 24ch;
  letter-spacing: -0.015em;
}
.headline-figure .num { font-feature-settings: "tnum" 1, "lnum" 1; font-weight: 850; font-variation-settings: "wdth" 125; }
.week-grid { display: grid; gap: 40px; margin-top: 34px; grid-template-columns: minmax(0, 1fr); }
.sector-chart { list-style: none; margin: 14px 0 0; padding: 0; display: grid; gap: 14px; }
.bar-head { display: flex; justify-content: space-between; gap: 12px; font-size: 0.95rem; margin-bottom: 5px; }
.bar-total { color: var(--ink-soft); font-feature-settings: "tnum" 1; }
.bar { display: flex; gap: 2px; height: 28px; }
.seg {
  display: flex; align-items: center; padding-left: 7px; min-width: 0;
  font-size: 0.8rem; font-weight: 700; color: var(--on-level); font-feature-settings: "tnum" 1;
  overflow: hidden; white-space: nowrap;
}
.seg-enforced { background: var(--lvl-3); }
.seg-partial { background: var(--lvl-2); }
.seg-monitoring { background: var(--lvl-1); }
.seg-unprotected { background: var(--lvl-0); }
.legend { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 6px; font-size: 0.93rem; }
.legend li { display: grid; grid-template-columns: 14px 7.2em 1fr; gap: 10px; align-items: baseline; }
.swatch { width: 14px; height: 14px; display: inline-block; align-self: center; }
.swatch-enforced { background: var(--lvl-3); }
.swatch-partial { background: var(--lvl-2); }
.swatch-monitoring { background: var(--lvl-1); }
.swatch-unprotected { background: var(--lvl-0); }
.legend-word { font-weight: 800; font-variation-settings: "wdth" 70; letter-spacing: 0.04em; }
.legend-meaning { color: var(--ink-soft); }
details.as-table { margin-top: 14px; font-size: 0.93rem; }
details.as-table summary { cursor: pointer; color: var(--link); }
.numbers { border-collapse: collapse; margin-top: 10px; width: 100%; font-feature-settings: "tnum" 1; }
.numbers th, .numbers td { text-align: right; padding: 6px 8px; border-bottom: 1px solid var(--rule); }
.numbers th:first-child { text-align: left; }
.numbers thead th { font-weight: 650; }
.table-scroll { overflow-x: auto; }

.trend-chart { width: 100%; max-width: 360px; height: auto; display: block; margin-top: 10px; }
.trend-chart .t-grid { stroke: var(--rule); stroke-width: 1; }
.trend-chart .t-axis { font-size: 11px; fill: var(--ink-soft); font-family: var(--font-text); }
.trend-chart .t-line { fill: none; stroke: var(--lvl-3); stroke-width: 2.4; stroke-linejoin: round; }
.trend-chart .t-end { fill: var(--lvl-3); }
.trend-chart .t-endlabel { font-size: 12px; font-weight: 700; fill: var(--ink); font-family: var(--font-text); }
.moved { margin: 16px 0 0; max-width: 40ch; }

/* method */
.method { padding: 48px 0 56px; }
.method-grid { display: grid; gap: 36px; grid-template-columns: minmax(0, 1fr); }
.method ol, .method ul { margin: 14px 0 0; padding-left: 1.3em; max-width: var(--measure); }
.method li + li { margin-top: 10px; }

/* footer */
.site-foot { border-top: 1px solid var(--rule); padding: 26px 0 40px; font-size: 0.93rem; color: var(--ink-soft); }
.site-foot p { margin: 0; max-width: 70ch; }
.site-foot p + p { margin-top: 8px; }

.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

@media (min-width: 760px) {
  :root { --gutter: 32px; }
  .enclosure { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); }
  .enclosure h3 { grid-column: 1 / -1; }
  .week-grid { grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr); align-items: start; }
  .method-grid { grid-template-columns: 1fr 1fr; }
  .result-env { padding: 30px 40px 40px; }
  .check-form { padding: 30px 34px 26px; }
}
@media (max-width: 520px) {
  .result-top { grid-template-columns: minmax(0, 1fr); grid-template-areas: "stamp" "info"; }
  .postmark { width: 176px; justify-self: end; margin: -4px -6px 2px 0; }
  .record { font-size: 0.8rem; }
  .reading { grid-template-columns: 1fr; gap: 2px 0; }
  .reading dd { margin-bottom: 8px; }
  .also dl { grid-template-columns: 1fr; gap: 2px 0; }
  .also dd { margin-bottom: 8px; }
}

/* additions beyond the reference: report coverage, checker states, inner pages */
[hidden] { display: none !important; }
code { font-family: var(--font-record); font-variation-settings: "wdth" 88; font-size: 0.88em; }
.coverage { margin: 12px 0 0; max-width: 60ch; color: var(--ink-soft); }

/* the stamp lands from 1.35x scale; don't let it push the page sideways on phones */
.result { overflow-x: clip; }
.result-status { margin: 0; padding: 18px 0 8px; max-width: var(--measure); }
.result-status.is-error { color: var(--lvl-0); font-weight: 600; }
.enclosure .empty { margin: 0; color: var(--ink-soft); }
.lookups.over .tick.used { background: var(--lvl-0); border-color: var(--lvl-0); }
.lookups.over { color: var(--lvl-0); font-weight: 650; }

.prose { padding: 28px 0 56px; }
.prose h1 { margin-bottom: 0; }
.prose .lede { max-width: 56ch; color: var(--ink-soft); margin: 16px 0 0; font-size: 1.12rem; }
.prose section { margin-top: 44px; }
.prose h2 + p, .prose h2 + ul, .prose h2 + dl { margin-top: 14px; }
.prose p { max-width: var(--measure); }
.prose ul { padding-left: 1.3em; max-width: var(--measure); }
.prose li + li { margin-top: 8px; }
.prose .legend { padding-left: 0; }
.rules { max-width: 640px; margin-top: 18px; }
.rules td { text-align: left; }

.terms { margin: 14px 0 0; display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 14px 24px; max-width: 860px; }
.terms dt { font-weight: 700; font-variation-settings: "wdth" 106; }
.terms dd { margin: 0; max-width: var(--measure); }

.toc { margin-top: 36px; display: grid; gap: 22px 32px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); border-top: 1px solid var(--rule); padding-top: 22px; }
.toc-h { font-size: 1rem; font-variation-settings: "wdth" 106; font-weight: 700; letter-spacing: 0; }
.toc ul { list-style: none; padding: 0; margin: 8px 0 0; font-size: 0.95rem; }
.toc li + li { margin-top: 4px; }

.fix-group { margin-top: 12px; }
.fix-entry { border-top: 1px solid var(--rule); padding-top: 22px; margin-top: 28px; scroll-margin-top: 16px; }
.fix-entry h3 { display: flex; gap: 12px; align-items: baseline; flex-wrap: wrap; }
.fix-entry .code { margin: 6px 0 0; color: var(--ink-soft); }
.fix-entry p { margin: 10px 0 0; }
.fix-entry .record { margin-top: 12px; max-width: 760px; }
.fix-entry .ref { font-size: 0.9rem; color: var(--ink-soft); }
.fix-first .f-more { font-size: 0.93rem; }

@media (max-width: 520px) {
  .terms { grid-template-columns: 1fr; gap: 2px 0; }
  .terms dd { margin-bottom: 12px; }
}