/* Fonts are served with the page (SIL Open Font License, see fonts/OFL-*.txt), so a strict
   font-src 'self' policy holds. Latin subsets of the variable fonts. */
@font-face { font-family: "Schibsted Grotesk"; font-style: normal; font-weight: 400 900; font-display: swap; src: url("fonts/schibsted-grotesk-latin.woff2") format("woff2"); }
@font-face { font-family: "Atkinson Hyperlegible Next"; font-style: normal; font-weight: 200 800; font-display: swap; src: url("fonts/atkinson-hyperlegible-next-latin.woff2") format("woff2"); }
@font-face { font-family: "Atkinson Hyperlegible Mono"; font-style: normal; font-weight: 200 800; font-display: swap; src: url("fonts/atkinson-hyperlegible-mono-latin.woff2") format("woff2"); }

/* Layout: a lab notebook page. Millimetre grid behind the hero, one column of argument down the page,
   glass only on the chrome (top bar, screenshot frame), never on data. */
:root {
  --paper: #F6F8FA;   /* ground */
  --surface: #FFFFFF; /* cards, figures */
  --ink: #14283B;     /* text */
  --ink-2: #4A5B6C;   /* secondary text, 6.4:1 on paper */
  --rule: #D6DEE6;
  --grid: rgba(20, 40, 59, 0.06);
  --blue: #0072B2;    /* accent, buttons (5.2:1 with white) */
  --link: #005A8C;
  --on-blue: #FFFFFF;
  --amber: #E69F00;   /* the mean dot in the mark only */
  --soft-blue: rgba(0, 114, 178, 0.12);
  --soft-amber: rgba(230, 159, 0, 0.14);
  --glass: rgba(246, 248, 250, 0.84);
  --glass-rim: rgba(255, 255, 255, 0.7);
  --shadow: 0 1px 2px rgba(20, 40, 59, 0.06), 0 12px 32px rgba(20, 40, 59, 0.10);
  /* data series: Okabe-Ito, each also has its own marker shape */
  --s1: #0072B2; --s2: #D55E00; --s3: #009E73;
  --display: "Schibsted Grotesk", "Helvetica Neue", Arial, sans-serif;
  --body: "Atkinson Hyperlegible Next", "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Atkinson Hyperlegible Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --step-0: 1.0625rem;
  --step-1: 1.25rem;
  --step-2: clamp(1.5rem, 1.2rem + 1.2vw, 2rem);
  --step-3: clamp(2rem, 1.4rem + 2.4vw, 3rem);
  --step-4: clamp(2.6rem, 1.6rem + 4.4vw, 4.75rem);
  --radius: 14px;
  --wrap: 1160px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0F1B26; --surface: #15242F; --ink: #E7EEF4; --ink-2: #A9B8C5; --rule: #2A3D4D;
    --grid: rgba(231, 238, 244, 0.05);
    --blue: #56B4E9; --link: #7CC6EF; --on-blue: #0F1B26;
    --soft-blue: rgba(86, 180, 233, 0.14); --soft-amber: rgba(230, 159, 0, 0.12);
    --glass: rgba(15, 27, 38, 0.84); --glass-rim: rgba(255, 255, 255, 0.12);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 32px rgba(0, 0, 0, 0.35);
    --s1: #56B4E9; --s2: #E69F00; --s3: #3CC79A;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0F1B26; --surface: #15242F; --ink: #E7EEF4; --ink-2: #A9B8C5; --rule: #2A3D4D;
  --grid: rgba(231, 238, 244, 0.05);
  --blue: #56B4E9; --link: #7CC6EF; --on-blue: #0F1B26;
  --soft-blue: rgba(86, 180, 233, 0.14); --soft-amber: rgba(230, 159, 0, 0.12);
  --glass: rgba(15, 27, 38, 0.84); --glass-rim: rgba(255, 255, 255, 0.12);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 32px rgba(0, 0, 0, 0.35);
  --s1: #56B4E9; --s2: #E69F00; --s3: #3CC79A;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 var(--step-0)/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
}
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 10; background: var(--paper); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--link); text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; border-radius: 4px; }
h1, h2, h3 { font-family: var(--display); color: var(--ink); text-wrap: balance; margin: 0; }
h2 { font-size: var(--step-3); line-height: 1.08; letter-spacing: -0.02em; font-weight: 800; }
h3 { font-size: var(--step-1); line-height: 1.25; font-weight: 700; letter-spacing: -0.005em; }
p { margin: 0; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.skip { position: absolute; left: 16px; top: -100px; z-index: 50; background: var(--surface); color: var(--ink); padding: 10px 14px; border-radius: 8px; }
.skip:focus { top: calc(12px + env(safe-area-inset-top, 0px)); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.eyebrow { font: 500 0.8125rem/1.3 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-2); }
.lede { font-size: var(--step-1); line-height: 1.55; color: var(--ink-2); max-width: 60ch; }
.mono { font-family: var(--mono); }

/* ---------- top bar (glass) */
.bar { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; padding-block: 12px; }
.bar .inner {
  display: flex; align-items: center; gap: 20px;
  padding: 8px 8px 8px 16px; border-radius: 999px;
  background: var(--glass); border: 1px solid var(--rule);
  box-shadow: inset 0 1px 0 var(--glass-rim), var(--shadow);
  -webkit-backdrop-filter: blur(18px) saturate(1.6); backdrop-filter: blur(18px) saturate(1.6);
}
.brand { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; color: var(--ink); font: 700 1.375rem/1 var(--display); letter-spacing: -0.02em; }
.brand img { width: 34px; height: 34px; flex: none; border-radius: 8px; }
.bar nav { display: flex; gap: 4px; margin-left: auto; }
.bar nav a { color: var(--ink); text-decoration: none; font-weight: 600; font-size: 0.9375rem; padding: 8px 12px; border-radius: 999px; }
.bar nav a:hover { background: var(--soft-blue); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px;
  padding: 10px 20px; border-radius: 999px; font: 700 1rem/1.2 var(--body); text-decoration: none;
  background: var(--blue); color: var(--on-blue); border: 2px solid var(--blue);
}
.btn:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--rule); }
.btn.ghost:hover { border-color: var(--blue); filter: none; }
.bar .btn { min-height: 40px; padding: 8px 16px; font-size: 0.9375rem; }
.bar .signin { color: var(--ink); font-weight: 600; font-size: 0.9375rem; text-decoration: none; padding: 8px 12px; border-radius: 999px; min-height: 40px; display: inline-flex; align-items: center; }
.bar .signin:hover { background: var(--soft-blue); }
@media (max-width: 760px) { .bar nav { display: none; } .bar .signin { margin-left: auto; } .bar .inner { gap: 8px; } }

/* ---------- hero */
.hero { position: relative; overflow: hidden; padding-block: 40px 56px; }
.hero::before {
  content: ""; position: absolute; inset: -80px 0 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(40rem 26rem at 82% 20%, var(--soft-blue), transparent 70%),
    radial-gradient(26rem 18rem at 66% 78%, var(--soft-amber), transparent 70%),
    linear-gradient(var(--grid) 1px, transparent 1px) 0 0 / 8px 8px,
    linear-gradient(90deg, var(--grid) 1px, transparent 1px) 0 0 / 8px 8px;
  -webkit-mask-image: linear-gradient(#000 60%, transparent); mask-image: linear-gradient(#000 60%, transparent);
}
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: 48px; align-items: center; }
.hero h1 { font-size: var(--step-4); line-height: 0.98; letter-spacing: -0.035em; font-weight: 800; margin-block: 14px 22px; }
.hero h1 span { display: block; color: var(--blue); }
.hero .proof { font-size: var(--step-1); font-weight: 600; line-height: 1.4; color: var(--ink); margin: 0 0 14px; }
.hero .ctas { display: flex; flex-wrap: wrap; gap: 12px; margin-block: 28px 18px; }
.hero .assure { font-size: 0.9375rem; color: var(--ink-2); display: flex; flex-wrap: wrap; gap: 6px 18px; padding: 0; margin: 0; list-style: none; }
.hero .assure li { display: inline-flex; align-items: center; gap: 8px; }
.hero .assure li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--blue); }
.plotcard { margin: 0; background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px 18px 14px; }
.plotcard header { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 6px; }
.plotcard header strong { font: 700 1rem/1.3 var(--display); }
.plotcard header span { font: 400 0.8125rem/1.3 var(--mono); color: var(--ink-2); }
.plotcard svg { width: 100%; height: auto; display: block; overflow: visible; }
.plotcard figcaption { font-size: 0.8125rem; color: var(--ink-2); margin-top: 6px; }
@media (max-width: 880px) { .hero .wrap { grid-template-columns: minmax(0, 1fr); gap: 32px; } }

/* svg chart text and marks, all from tokens */
.ax { stroke: var(--ink); stroke-width: 1.2; fill: none; }
.tick text, .lab { fill: var(--ink-2); font: 400 12px var(--mono); }
.lab-ink { fill: var(--ink); font: 500 13px var(--mono); }
.gridline { stroke: var(--rule); stroke-width: 1; }
.ref { stroke: var(--ink-2); stroke-width: 1.2; stroke-dasharray: 4 4; fill: none; }
.whisk { stroke: var(--ink); stroke-width: 2; fill: none; stroke-linecap: round; }
.meanline { stroke: var(--ink); stroke-width: 3.5; stroke-linecap: round; }
.c1 { fill: var(--s1); stroke: var(--s1); } .c2 { fill: var(--s2); stroke: var(--s2); } .c3 { fill: var(--s3); stroke: var(--s3); }
.pt { stroke: var(--surface); stroke-width: 1.4; }
.range { stroke-width: 2.4; fill: none; }
.worst { stroke-width: 3; stroke-linecap: round; fill: none; }
.span { stroke: var(--rule); stroke-width: 3; stroke-linecap: round; }
.chart .scroll svg.only-narrow { display: none; min-width: 0; }
@media (max-width: 600px) { .chart .scroll svg.only-wide { display: none; } .chart .scroll svg.only-narrow { display: block; } }
@media (prefers-reduced-motion: no-preference) {
  .pt.drop { transition: transform 900ms cubic-bezier(.2,.9,.25,1.15), opacity 600ms ease-out; }
}

/* ---------- screenshot */
.shot { padding-block: 8px 72px; }
.frame {
  margin: 0; padding: 10px; border-radius: 22px;
  background: var(--glass); border: 1px solid var(--rule);
  box-shadow: inset 0 1px 0 var(--glass-rim), var(--shadow);
  -webkit-backdrop-filter: blur(14px) saturate(1.5); backdrop-filter: blur(14px) saturate(1.5);
}
.frame img { border-radius: 14px; border: 1px solid var(--rule); width: 100%; }
.frame figcaption, .pair figcaption { font-size: 0.9375rem; color: var(--ink-2); padding: 12px 6px 2px; max-width: 75ch; }
/* screenshots follow the page theme */
.only-dark { display: none; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .only-light { display: none; } :root:not([data-theme="light"]) .only-dark { display: block; } }
:root[data-theme="dark"] .only-light { display: none; }
:root[data-theme="dark"] .only-dark { display: block; }

/* ---------- sections */
section.block { padding-block: 72px; border-top: 1px solid var(--rule); }
.head { display: grid; gap: 14px; margin-bottom: 40px; max-width: 760px; }
.features { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px 28px; padding: 0; margin: 0; list-style: none; }
.features li { display: grid; gap: 8px; align-content: start; min-width: 0; }
.features li p { color: var(--ink-2); font-size: 1rem; }
.features .glyph { width: 40px; height: 40px; }
.features .glyph * { stroke: var(--blue); fill: none; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.features .glyph .dot { fill: var(--amber); stroke: none; }
@media (max-width: 1000px) { .features { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .features { grid-template-columns: minmax(0, 1fr); } }
.also { margin-top: 40px; padding: 18px 20px; border-radius: var(--radius); background: var(--soft-blue); font-size: 1rem; }
.also strong { font-family: var(--display); }

.pair { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: 28px; margin-top: 56px; align-items: start; }
.pair figure { margin: 0; min-width: 0; }
.pair img { border-radius: 12px; border: 1px solid var(--rule); box-shadow: var(--shadow); background: var(--surface); }
@media (max-width: 760px) { .pair { grid-template-columns: minmax(0, 1fr); } }

/* accuracy */
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin: 0 0 40px; padding: 0; list-style: none; border-block: 1px solid var(--rule); }
.stats li { padding: 22px 20px 22px 0; display: grid; gap: 6px; align-content: start; min-width: 0; }
.stats li + li { padding-left: 20px; border-left: 1px solid var(--rule); }
.stats strong { font: 800 var(--step-3)/1 var(--display); letter-spacing: -0.03em; }
.stats span { font-size: 0.9375rem; color: var(--ink-2); }
@media (max-width: 900px) {
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats li:nth-child(3) { padding-left: 0; border-left: 0; }
  .stats li:nth-child(n+3) { border-top: 1px solid var(--rule); }
}
@media (max-width: 460px) {
  .stats { grid-template-columns: minmax(0, 1fr); }
  .stats li, .stats li + li { padding-left: 0; border-left: 0; }
  .stats li + li { border-top: 1px solid var(--rule); }
}
.chart { margin: 0; background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 20px 20px 16px; }
.chart h3 { font-size: 1.0625rem; margin-bottom: 4px; }
.chart .sub { font-size: 0.875rem; color: var(--ink-2); }
.legend { display: flex; flex-wrap: wrap; gap: 8px 20px; margin: 14px 0 4px; padding: 0; list-style: none; font: 500 0.875rem/1.2 var(--mono); }
.legend li { display: inline-flex; align-items: center; gap: 8px; }
.legend svg { width: 16px; height: 16px; }
.scroll { overflow-x: auto; }
.chart .scroll svg { display: block; width: 100%; min-width: 560px; height: auto; }
.chart figcaption { font-size: 0.9375rem; color: var(--ink-2); margin-top: 12px; max-width: 80ch; }
details.data { margin-top: 12px; font-size: 0.9375rem; }
details.data summary { cursor: pointer; color: var(--link); font-weight: 600; }
table { border-collapse: collapse; margin-top: 10px; font-variant-numeric: tabular-nums; font-size: 0.875rem; }
th, td { text-align: right; padding: 6px 12px; border-bottom: 1px solid var(--rule); white-space: nowrap; }
th:first-child, td:first-child { text-align: left; }
thead th { font-weight: 600; color: var(--ink-2); }
.limits { margin-top: 20px; color: var(--ink-2); font-size: 0.9375rem; max-width: 80ch; }
.chart + .chart { margin-top: 24px; }
.chart.narrow { max-width: 920px; }
/* the accuracy figures are drawn on white, so they sit on a white plate in both themes */
.plate { background: #FFFFFF; border-radius: 10px; margin-top: 14px; width: 100%; }
.scroll .plate { min-width: 600px; }
.scroll .plate.wide { min-width: 760px; }
tr.group th { text-align: left; padding-top: 16px; font-family: var(--display); color: var(--ink); }
tr.total th, tr.total td { font-weight: 700; border-top: 2px solid var(--ink-2); }
.report-link { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center; }
.report-link span { color: var(--ink-2); font-size: 0.9375rem; max-width: 56ch; }

/* trust trio */
.trio { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.trio > div { display: grid; gap: 8px; align-content: start; padding-top: 18px; border-top: 3px solid var(--blue); min-width: 0; }
.trio p { color: var(--ink-2); font-size: 1rem; }
@media (max-width: 820px) { .trio { grid-template-columns: minmax(0, 1fr); } }

/* pricing */
.plans { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; align-items: stretch; }
.plan { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 22px 20px; display: grid; grid-template-rows: auto auto 1fr; gap: 12px; min-width: 0; }
.plan.lead { border: 2px solid var(--blue); box-shadow: var(--shadow); }
.plan h3 { font-size: 1.0625rem; display: flex; justify-content: space-between; gap: 8px; align-items: baseline; flex-wrap: wrap; }
.plan .tag { font: 500 0.75rem/1 var(--mono); letter-spacing: 0.05em; text-transform: uppercase; color: var(--blue); }
.price { font: 800 2.25rem/1 var(--display); letter-spacing: -0.03em; }
.price small { font: 400 0.9375rem/1.3 var(--body); letter-spacing: 0; color: var(--ink-2); display: block; margin-top: 6px; }
.plan ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 8px; font-size: 0.9375rem; color: var(--ink-2); align-content: start; }
.plan li { padding-left: 18px; position: relative; }
.plan li::before { content: ""; position: absolute; left: 2px; top: 0.6em; width: 8px; height: 2px; background: var(--blue); }
@media (max-width: 1000px) { .plans { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .plans { grid-template-columns: minmax(0, 1fr); } }
.beta-note { margin-bottom: 28px; display: inline-flex; gap: 10px; align-items: center; padding: 8px 14px; border-radius: 999px; background: var(--soft-amber); font-weight: 600; font-size: 0.9375rem; }
.fine { margin-top: 20px; font-size: 0.9375rem; color: var(--ink-2); max-width: 80ch; }

/* questions */
.faq { display: grid; gap: 0; max-width: 820px; border-top: 1px solid var(--rule); }
.faq details { border-bottom: 1px solid var(--rule); }
.faq summary { cursor: pointer; list-style: none; padding: 18px 40px 18px 0; position: relative; font: 700 1.125rem/1.35 var(--display); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 6px; top: 14px; font: 400 1.5rem/1 var(--mono); color: var(--blue); }
.faq details[open] summary::after { content: "\2212"; }
.faq details p { padding: 0 0 20px; color: var(--ink-2); max-width: 70ch; }

/* closing */
.closing { padding-block: 80px; border-top: 1px solid var(--rule); text-align: left; }
.closing .wrap { display: flex; flex-wrap: wrap; gap: 24px 40px; align-items: end; justify-content: space-between; }
.closing h2 { max-width: 16ch; }
.closing .ctas { display: flex; flex-wrap: wrap; gap: 12px; }
footer { padding-block: 28px 40px; border-top: 1px solid var(--rule); font-size: 0.875rem; color: var(--ink-2); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 28px; align-items: center; justify-content: space-between; }
footer ul { display: flex; flex-wrap: wrap; gap: 8px 20px; margin: 0; padding: 0; list-style: none; }

/* ---------- accuracy report (accuracy/index.html) */
.report-head { padding-block: 40px 36px; }
.report-head h1 { font-size: var(--step-3); line-height: 1.08; letter-spacing: -0.02em; font-weight: 800; margin-block: 12px 16px; max-width: 22ch; }
.report-head .lede { max-width: 64ch; }
.meta { margin: 20px 0 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 6px 22px; font: 400 0.875rem/1.4 var(--mono); color: var(--ink-2); }
.report { display: grid; grid-template-columns: minmax(0, 220px) minmax(0, 1fr); gap: 56px; padding-block: 40px 72px; border-top: 1px solid var(--rule); }
.toc { position: sticky; top: 96px; align-self: start; font-size: 0.9375rem; }
.toc h2 { font: 500 0.8125rem/1.3 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 10px; }
.toc ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }
.paper { min-width: 0; max-width: 920px; }
.paper > section + section { margin-top: 56px; }
.paper h2 { font-size: var(--step-2); line-height: 1.15; letter-spacing: -0.015em; margin-bottom: 16px; }
.paper h3 { margin: 32px 0 10px; }
.paper p, .paper ul, .paper ol { max-width: 70ch; }
.paper p + p, .paper p + ul, .paper ul + p, .paper p + ol, .paper ol + p { margin-top: 1em; }
.paper ul, .paper ol { padding-left: 1.4em; margin: 0; }
.paper li + li { margin-top: 0.4em; }
.paper .eq { margin: 1em 0; font-family: var(--mono); font-size: 0.9375rem; }
.paper figure { margin: 32px 0; background: var(--surface); border: 1px solid var(--rule); border-radius: var(--radius); padding: 16px 16px 14px; }
.paper figure .plate { margin-top: 0; }
.paper figcaption { font-size: 0.9375rem; color: var(--ink-2); margin-top: 12px; max-width: 80ch; }
.paper figcaption b { color: var(--ink); }
.paper .table-figure { margin-top: 28px; }
.paper .table-figure table { margin-top: 0; width: 100%; }
thead th { white-space: normal; vertical-align: bottom; min-width: 7em; }
thead th:first-child { min-width: 0; }
.paper caption { caption-side: top; text-align: left; font-size: 0.9375rem; color: var(--ink-2); padding: 0 0 10px; white-space: normal; max-width: 80ch; }
.paper caption b { color: var(--ink); }
.keyfindings { margin-top: 20px; padding: 20px 22px; border-radius: var(--radius); background: var(--soft-blue); }
.keyfindings ul { max-width: none; }
.callout { margin-top: 20px; padding: 16px 20px; border-left: 4px solid var(--blue); background: var(--surface); border-radius: 0 10px 10px 0; }
.note { margin-top: 20px; padding: 14px 18px; border-left: 4px solid var(--amber); background: var(--soft-amber); border-radius: 0 10px 10px 0; font-size: 0.9375rem; }
.refs { font-size: 0.9375rem; color: var(--ink-2); }
.cite { font-family: var(--mono); font-size: 0.875rem; background: var(--surface); border: 1px solid var(--rule); border-radius: 10px; padding: 12px 14px; overflow-wrap: anywhere; }
@media (max-width: 900px) {
  .report { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .toc { position: static; }
}
@media print {
  .bar, .toc, .skip, footer ul { display: none; }
  .report { display: block; border: 0; padding: 0; }
  .paper figure { break-inside: avoid; }
}

/* glass fallbacks */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) { .bar .inner, .frame { background: var(--paper); } }
@media (prefers-reduced-transparency: reduce) { .bar .inner, .frame { background: var(--paper); -webkit-backdrop-filter: none; backdrop-filter: none; } }
@media (prefers-contrast: more) { .bar .inner, .frame { background: var(--paper); -webkit-backdrop-filter: none; backdrop-filter: none; border-color: var(--ink); } }
@media (forced-colors: active) { .btn { border: 2px solid ButtonText; } .hero::before { display: none; } }