/* ==========================================================================
   Fieldnote Health — marketing site stylesheet
   Direction: "clinical-editorial precision instrument." A chart-note reading
   experience, not a startup landing page: paper ground, hairline rules,
   IBM Plex throughout, and a signature "filed note" mockup with a dashed
   evidence rail connecting a follow-up action to the sentence that supports
   it — the actual mechanic the product ships, not a decorative motif.
   ========================================================================== */

/* ---- tokens (mirrors frontend/src/index.css so the two properties feel
   like one product) ---- */
:root {
  color-scheme: light;
  --bg: #f5f6f5;
  --surface: #ffffff;
  --ink: #171b1e;
  --ink-soft: #4b535a;
  --ink-faint: #7a828a;
  --line: #dbdfe0;
  --line-strong: #c3c8ca;

  --accent: #0e6b5c;
  --accent-strong: #0a5548;
  --accent-tint: #eaf4f1;
  --on-accent: #ffffff;

  --warn: #b5760a;
  --warn-tint: #fbf1e0;
  --danger: #a23b2e;
  --danger-tint: #f8e9e6;
  --focus-ring: #1568c9;

  --font-display: "IBM Plex Serif", ui-serif, Georgia, "Times New Roman", serif;
  --font-sans: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --radius-card: 0.5rem;
  --radius-control: 0.375rem;
  --content-max: 72rem;
  --prose-max: 42rem;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #11151a;
    --surface: #171c22;
    --ink: #e7eaec;
    --ink-soft: #a7afb6;
    --ink-faint: #767f87;
    --line: #2a3138;
    --line-strong: #38414a;
    --accent: #35a793;
    --accent-strong: #4fc0ac;
    --accent-tint: #16302c;
    --on-accent: #06211d;
    --warn: #e0a63f;
    --warn-tint: #332a15;
    --danger: #e08072;
    --danger-tint: #341f1b;
    --focus-ring: #6fb3ff;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #11151a;
  --surface: #171c22;
  --ink: #e7eaec;
  --ink-soft: #a7afb6;
  --ink-faint: #767f87;
  --line: #2a3138;
  --line-strong: #38414a;
  --accent: #35a793;
  --accent-strong: #4fc0ac;
  --accent-tint: #16302c;
  --on-accent: #06211d;
  --warn: #e0a63f;
  --warn-tint: #332a15;
  --danger: #e08072;
  --danger-tint: #341f1b;
  --focus-ring: #6fb3ff;
}

/* ---- reset ---- */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.55;
  min-height: 100dvh;
}
img, svg { max-width: 100%; display: block; }
::selection { background: var(--accent-tint); color: var(--accent-strong); }

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
  border-radius: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.6em;
  color: var(--ink);
  text-wrap: balance;
}
p { margin: 0 0 1em; }
a { color: var(--accent-strong); }
a:not(.btn) { text-underline-offset: 0.18em; }
code, kbd, .mono { font-family: var(--font-mono); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent-strong);
  margin: 0 0 1rem;
}
.eyebrow::before {
  content: "";
  width: 1.15em;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

/* ---- skip link ---- */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--ink);
  color: var(--bg);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-control);
  font-family: var(--font-sans);
  font-weight: 600;
  z-index: 100;
  transition: top 120ms ease-out;
}
.skip-link:focus {
  top: 1rem;
}

/* ---- layout shell ---- */
.wrap {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: 1.5rem;
}
@media (min-width: 640px) {
  .wrap { padding-inline: 2rem; }
}

/* ---- header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.25rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}
.brand svg { width: 1.75rem; height: 1.75rem; flex-shrink: 0; }
.brand .brand-health {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.62em;
  letter-spacing: 0.09em;
  color: var(--ink-faint);
  text-transform: uppercase;
  margin-left: 0.15em;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-control);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
}
.nav-toggle svg { width: 1.15rem; height: 1.15rem; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.site-nav ul {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.92rem;
}
.site-nav a:not(.btn) {
  color: var(--ink-soft);
  text-decoration: none;
  font-weight: 500;
}
.site-nav a:not(.btn):hover { color: var(--accent-strong); }
.site-nav a.is-active { color: var(--ink); }

@media (max-width: 780px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: absolute;
    inset: 4.25rem 0 auto 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: stretch;
    padding: 0.5rem 0 1.25rem;
  }
  .site-nav[hidden] { display: none; }
  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .site-nav ul a { display: block; padding: 0.85rem 1.5rem; }
  .site-nav .btn { margin: 0.75rem 1.5rem 0; }
}

/* ---- buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.35rem;
  border-radius: var(--radius-control);
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  line-height: 1.2;
}
.btn-primary {
  background: var(--accent-strong);
  color: var(--on-accent);
  border-color: var(--accent-strong);
}
.btn-primary:hover { background: var(--accent); border-color: var(--accent); }
.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-secondary:hover { border-color: var(--accent-strong); color: var(--accent-strong); }
.btn-ghost {
  background: transparent;
  color: var(--accent-strong);
  padding-inline: 0;
}

/* ---- hero ---- */
.hero {
  padding: 3.5rem 0 4rem;
  border-bottom: 1px solid var(--line);
}
.hero .wrap {
  display: grid;
  gap: 3rem;
  grid-template-columns: 1fr;
}
@media (min-width: 960px) {
  .hero .wrap { grid-template-columns: 1.05fr 0.95fr; align-items: center; }
}
.hero h1 {
  font-size: clamp(2.1rem, 4.2vw, 3rem);
  max-width: 18ch;
}
.hero .lede {
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: 46ch;
  margin-bottom: 1.75rem;
}
.hero .cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
}

/* ---- signature element: the filed note ---- */
.note-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: 0 1px 0 var(--line), 0 18px 40px -28px rgba(10, 30, 25, 0.35);
  overflow: hidden;
  font-size: 0.92rem;
}
.note-card__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--accent-tint) 55%, transparent);
}
.note-card__bar .mono {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.note-card__bar .mono strong { color: var(--accent-strong); font-weight: 600; }
.note-card__body {
  padding: 1.15rem 1.25rem 1.35rem;
  position: relative;
}
.note-card__section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.4rem;
}
.note-card__narrative {
  font-family: var(--font-display);
  color: var(--ink-soft);
  line-height: 1.6;
  margin-bottom: 1.1rem;
}
.note-card__narrative .cite {
  background: var(--accent-tint);
  box-shadow: inset 2px 0 0 var(--accent);
  border-radius: 2px;
  padding: 0 0.15em;
  color: var(--ink);
}
.note-card__actions-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-top: 1px dashed var(--line-strong);
  padding-top: 0.9rem;
  margin-bottom: 0.6rem;
}
.note-card__actions-head .mono { font-size: 0.72rem; color: var(--accent-strong); }
.note-card__actions {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.note-card__actions li {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding-left: 0.1rem;
}
.note-card__check {
  flex-shrink: 0;
  width: 1.05rem;
  height: 1.05rem;
  margin-top: 0.15rem;
  border-radius: 0.28rem;
  border: 1.5px solid var(--line-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.note-card__actions li.is-done .note-card__check {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
}
.note-card__actions li.is-done .note-card__check svg { width: 0.65rem; height: 0.65rem; }
.note-card__action-text .tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent-strong);
  display: block;
  margin-bottom: 0.1rem;
}
.note-card__action-text strong { font-weight: 600; }
.note-card__actions li.is-linked .note-card__action-text {
  position: relative;
}
.note-card__actions li.is-linked .note-card__action-text::before {
  content: "";
  position: absolute;
  left: -0.85rem;
  top: -1.4rem;
  bottom: 0.6rem;
  width: 2px;
  background-image: linear-gradient(var(--accent) 55%, transparent 0);
  background-size: 2px 6px;
  background-repeat: repeat-y;
  opacity: 0.7;
}
.note-card__foot {
  margin-top: 1.1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-faint);
  display: flex;
  justify-content: space-between;
}

/* ---- generic section rhythm ---- */
.section {
  padding: 4rem 0;
  border-bottom: 1px solid var(--line);
}
.section:last-of-type { border-bottom: none; }
.section-head {
  max-width: 40rem;
  margin-bottom: 2.5rem;
}
.section-head h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); }
.section-head p { color: var(--ink-soft); font-size: 1.02rem; }

/* ---- how it works ---- */
.steps {
  display: grid;
  gap: 1.75rem;
  counter-reset: step;
}
@media (min-width: 780px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
}
.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding-block: 1.5rem;
  border-top: 1px solid var(--line);
}
.step:nth-of-type(1),
.step:nth-of-type(2) { border-top: 1px solid var(--line); }
.step__num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-strong);
  padding-top: 0.15rem;
}
.step h3 { font-size: 1.1rem; margin-bottom: 0.4rem; }
.step p { color: var(--ink-soft); margin-bottom: 0.5rem; font-size: 0.96rem; }
.step .callout {
  display: block;
  font-size: 0.85rem;
  color: var(--warn);
  font-style: italic;
}

/* ---- benefits ---- */
.benefits {
  display: grid;
  gap: 1.25rem;
}
@media (min-width: 700px) {
  .benefits { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1080px) {
  .benefits { grid-template-columns: repeat(3, 1fr); }
}
.benefit {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 1.5rem;
}
.benefit h3 { font-size: 1.05rem; margin-bottom: 0.5rem; }
.benefit p { color: var(--ink-soft); font-size: 0.94rem; margin-bottom: 0; }

/* ---- EHR chips ---- */
.ehr-grid {
  display: grid;
  gap: 1.25rem;
}
@media (min-width: 780px) {
  .ehr-grid { grid-template-columns: repeat(3, 1fr); }
}
.ehr-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--surface);
  padding: 1.4rem;
}
.ehr-card .mono {
  font-size: 0.7rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: block;
  margin-bottom: 0.5rem;
}
.ehr-card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; }
.ehr-card p { color: var(--ink-soft); font-size: 0.92rem; margin-bottom: 0; }
.ehr-note {
  margin-top: 1.5rem;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

/* ---- security / compliance ---- */
.compliance-grid {
  display: grid;
  gap: 1.5rem;
}
@media (min-width: 780px) {
  .compliance-grid { grid-template-columns: repeat(2, 1fr); }
}
.compliance-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--surface);
  padding: 1.75rem;
}
.compliance-card .mono {
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--accent-strong);
  display: block;
  margin-bottom: 0.6rem;
}
.compliance-card h3 { font-size: 1.2rem; margin-bottom: 0.75rem; }
.compliance-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink-soft);
  font-size: 0.94rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.audit-strip {
  margin-top: 1.5rem;
  display: grid;
  gap: 1.25rem;
  border-top: 1px solid var(--line);
  padding-top: 1.5rem;
}
@media (min-width: 780px) {
  .audit-strip { grid-template-columns: repeat(2, 1fr); }
}
.audit-strip p { color: var(--ink-soft); font-size: 0.92rem; margin-bottom: 0; }
.audit-strip strong { color: var(--ink); }

/* ---- pricing ---- */
.pricing-card {
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-card);
  padding: 2rem;
  max-width: 30rem;
}
.pricing-card .eyebrow { margin-bottom: 0.75rem; }
.price-line {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}
.price-line .amount {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 600;
}
.price-line .unit { color: var(--ink-faint); font-size: 0.95rem; }
.pricing-card .includes { color: var(--ink-soft); margin-bottom: 1.25rem; }
.pricing-card ul {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.94rem;
  color: var(--ink-soft);
  border-top: 1px dashed var(--line-strong);
  padding-top: 1.1rem;
}
.pricing-card ul li::before { content: "— "; color: var(--ink-faint); }
.pricing-flag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--warn);
  background: var(--warn-tint);
  border-radius: 999px;
  padding: 0.25rem 0.65rem;
  margin-bottom: 1rem;
}

/* ---- FAQ accordion ---- */
.faq { border-top: 1px solid var(--line); }
.faq details {
  border-bottom: 1px solid var(--line);
  padding-block: 1.1rem;
}
.faq summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary .icon {
  flex-shrink: 0;
  width: 1.4rem;
  height: 1.4rem;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.faq summary .icon::before,
.faq summary .icon::after {
  content: "";
  position: absolute;
  background: var(--ink-soft);
}
.faq summary .icon::before { width: 0.55rem; height: 1.5px; }
.faq summary .icon::after { width: 1.5px; height: 0.55rem; transition: transform 150ms ease; }
.faq details[open] summary .icon::after { transform: scaleY(0); }
.faq details[open] summary { color: var(--accent-strong); }
.faq .faq-a {
  color: var(--ink-soft);
  margin-top: 0.85rem;
  max-width: 62ch;
  font-size: 0.97rem;
}
.faq .faq-a p:last-child { margin-bottom: 0; }

/* ---- final CTA band ---- */
.cta-band {
  background: var(--ink);
  color: var(--bg);
  padding: 3.5rem 0;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .cta-band { background: var(--surface); }
}
:root[data-theme="dark"] .cta-band { background: var(--surface); }
.cta-band h2 {
  color: #fff;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  max-width: 22ch;
}
.cta-band p { color: rgba(255,255,255,0.72); max-width: 48ch; }
.cta-band .cta-row { display: flex; flex-wrap: wrap; gap: 1rem 1.5rem; align-items: center; margin-top: 1.5rem; }
.cta-band .btn-secondary { color: #fff; border-color: rgba(255,255,255,0.35); }
.cta-band .btn-secondary:hover { border-color: #fff; color: #fff; }
.cta-band a.link-plain { color: rgba(255,255,255,0.85); }

/* ---- footer ---- */
.site-footer {
  padding: 3rem 0 2.5rem;
  font-size: 0.88rem;
  color: var(--ink-soft);
}
.footer-grid {
  display: grid;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 1.5rem;
}
@media (min-width: 700px) {
  .footer-grid { grid-template-columns: 1.3fr 1fr 1fr; }
}
.footer-brand .brand { margin-bottom: 0.75rem; }
.footer-brand p { max-width: 34ch; color: var(--ink-faint); font-size: 0.86rem; }
.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.85rem;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col a { color: var(--ink-soft); text-decoration: none; }
.footer-col a:hover { color: var(--accent-strong); }
.legal-fine {
  color: var(--ink-faint);
  font-size: 0.82rem;
  max-width: 68rem;
}
.legal-fine p { margin-bottom: 0.75rem; }
.legal-fine p:last-child { margin-bottom: 0; }

/* ---- legal / prose pages ---- */
.page-hero {
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--line);
}
.page-hero .eyebrow { margin-bottom: 0.75rem; }
.page-hero h1 { font-size: clamp(1.8rem, 3.4vw, 2.5rem); max-width: 28ch; }
.page-hero .lede { color: var(--ink-soft); max-width: 60ch; font-size: 1.02rem; }

.draft-notice {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  background: var(--warn-tint);
  border: 1px solid color-mix(in srgb, var(--warn) 45%, var(--line));
  border-radius: var(--radius-card);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0 0;
  color: var(--ink);
  font-size: 0.92rem;
  max-width: 60rem;
}
.draft-notice strong { color: var(--warn); display: block; font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: 0.25rem; }

.prose {
  max-width: var(--prose-max);
  padding-block: 3rem;
}
.prose h2 {
  font-size: 1.35rem;
  margin-top: 2.25rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}
.prose h2:first-of-type { margin-top: 0; padding-top: 0; border-top: none; }
.prose h3 { font-size: 1.08rem; margin-top: 1.5rem; }
.prose p, .prose li { color: var(--ink-soft); }
.prose strong { color: var(--ink); }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose li { margin-bottom: 0.4rem; }
.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.5rem;
  font-size: 0.9rem;
}
.prose caption { text-align: left; color: var(--ink-faint); font-size: 0.82rem; margin-bottom: 0.4rem; }
.prose th, .prose td {
  text-align: left;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--line);
  vertical-align: top;
}
.prose th { background: var(--accent-tint); color: var(--ink); font-weight: 600; font-size: 0.85rem; }
.prose blockquote {
  margin: 1.25rem 0;
  padding: 0.9rem 1.1rem;
  border-left: 3px solid var(--accent);
  background: var(--accent-tint);
  border-radius: 0 var(--radius-control) var(--radius-control) 0;
  color: var(--ink);
  font-size: 0.94rem;
}
.prose blockquote p:last-child { margin-bottom: 0; }
.prose hr { border: none; border-top: 1px solid var(--line); margin: 2rem 0; }
.prose .item-list {
  font-size: 0.88rem;
  color: var(--ink-faint);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 1.1rem 1.3rem;
  margin-top: 2rem;
}
.prose .item-list p { color: var(--ink-faint); margin-bottom: 0.5rem; }

/* ---- 404 ---- */
.error-page {
  padding: 5rem 0 6rem;
  text-align: left;
}
.error-page .mono {
  font-family: var(--font-mono);
  color: var(--accent-strong);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}
.error-page h1 { font-size: clamp(2rem, 4vw, 2.8rem); margin-top: 0.75rem; }
.error-page p { color: var(--ink-soft); max-width: 46ch; font-size: 1.02rem; }

/* ---- utility ---- */
.u-flush { margin: 0; }
.u-mt-lg { margin-top: 1.5rem; }
.u-mt-xl { margin-top: 2rem; }
.u-mb-sm { margin-bottom: 0.5rem; }
.u-no-border-bottom { border-bottom: none; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}