/* Grayscale Jacket — shared stylesheet
   Palette: cold-screen / ultramarine. Type: Baskerville display + IBM Plex Sans body.
   Layout: newspaper masthead with rules, capped H1, two text columns with margin notes,
   ruled tables, and a pull-number insert. */

:root {
  --color-paper: #fdf8ec
  --color-ink: #241d10
  --color-accent: #c07a10
  --font-head: Georgia,Liberation Serif,serif
  --font-body: DejaVu Sans,Helvetica Neue,system-ui
}

* {
  box-sizing: border-box;
}

html {
  background: var(--color-paper);
}

body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: Georgia,Liberation Serif,serif;
  font-size: 16px;
  line-height: 1.55;
  max-width: 100vw;
  overflow-x: hidden;
}

a {
  color: var(--color-accent);
}

a:hover {
  text-decoration: none;
}

img,
svg {
  max-width: 100%;
  height: auto;
}

.wrap {
  width: 100%;
  max-width: 980px;
  margin: 0 auto;
  padding: 0 1.1rem;
}

/* ---------- Masthead ---------- */

.masthead {
  border-top: 5px double var(--color-ink);
  border-bottom: 2px solid var(--color-ink);
  padding: 1rem 0 0.6rem;
}

.masthead__top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
}

.masthead__name {
  font-family: DejaVu Sans,Helvetica Neue,system-ui;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: clamp(1.5rem, 5.5vw, 2.1rem);
  font-weight: 700;
  margin: 0;
}

.masthead__name a {
  color: var(--color-ink);
  text-decoration: none;
}

.masthead__tag {
  font-style: italic;
  font-size: 0.85rem;
  color: var(--color-ink);
  opacity: 0.75;
}

.masthead nav {
  margin-top: 0.7rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--color-ink);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.masthead nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
}

.masthead nav a {
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}

.masthead nav a:hover,
.masthead nav a[aria-current="page"] {
  border-bottom-color: var(--color-accent);
  color: var(--color-accent);
}

/* ---------- Article header ---------- */

main {
  display: block;
  padding: 1.6rem 0 3rem;
}

.kicker {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.headline {
  font-family: DejaVu Sans,Helvetica Neue,system-ui;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  font-size: clamp(1.9rem, 6vw, 3rem);
  line-height: 1.08;
  margin: 0 0 0.8rem;
  border-bottom: 3px solid var(--color-ink);
  padding-bottom: 0.7rem;
  text-wrap: balance;
}

.dek {
  font-family: DejaVu Sans,Helvetica Neue,system-ui;
  font-style: italic;
  font-size: clamp(1.05rem, 2.6vw, 1.3rem);
  max-width: 62ch;
  margin: 0 0 2rem;
}

/* ---------- Two column article with margin notes ---------- */

.article-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.marginalia {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  order: 2;
}

.marginnote {
  border-top: 2px solid var(--color-accent);
  padding-top: 0.5rem;
  font-size: 0.85rem;
  font-style: italic;
  line-height: 1.5;
}

.marginnote strong {
  display: block;
  font-style: normal;
  font-family: DejaVu Sans,Helvetica Neue,system-ui;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 0.2rem;
}

.body-columns {
  order: 1;
  column-count: 1;
  column-gap: 2.4rem;
}

.body-columns p {
  margin: 0 0 1.1rem;
}

.body-columns h2,
.body-columns h3 {
  break-after: avoid-column;
  break-inside: avoid;
}

@media (min-width: 760px) {
  .article-grid {
    grid-template-columns: 200px 1fr;
  }
  .marginalia {
    order: 1;
    padding-top: 0.3rem;
  }
  .body-columns {
    order: 2;
    column-count: 2;
    column-rule: 1px solid rgba(22, 29, 44, 0.25);
  }
}

h2 {
  font-family: DejaVu Sans,Helvetica Neue,system-ui;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  font-size: 1.4rem;
  border-bottom: 1px solid var(--color-ink);
  padding-bottom: 0.3rem;
  margin: 2.2rem 0 1rem;
}

h3 {
  font-family: DejaVu Sans,Helvetica Neue,system-ui;
  font-size: 1.1rem;
  margin: 1.4rem 0 0.6rem;
}

/* ---------- Number insert (pull box) ---------- */

.number-insert {
  border-top: 3px solid var(--color-ink);
  border-bottom: 3px solid var(--color-ink);
  padding: 1rem 0;
  margin: 0 0 1.4rem;
  text-align: center;
  break-inside: avoid;
}

.number-insert .num {
  display: block;
  font-family: DejaVu Sans,Helvetica Neue,system-ui;
  font-size: 3.4rem;
  line-height: 1;
  color: var(--color-accent);
  font-weight: 700;
}

.number-insert .cap {
  display: block;
  font-size: 0.8rem;
  margin-top: 0.4rem;
  line-height: 1.4;
}

/* ---------- Table section (full width, breaks out of columns) ---------- */

.table-section {
  margin: 0 0 2.2rem;
}

.table-section .section-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  font-weight: 700;
  margin-bottom: 0.4rem;
  display: block;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

caption {
  text-align: left;
  font-family: DejaVu Sans,Helvetica Neue,system-ui;
  font-style: italic;
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
  caption-side: top;
}

/* Mobile-first: table becomes stacked cards */
table thead {
  display: none;
}

table tr {
  display: block;
  border: 1px solid var(--color-ink);
  margin-bottom: 0.8rem;
  padding: 0.5rem 0.7rem;
  background: #fff;
}

table td {
  display: block;
  border: none;
  padding: 0.35rem 0 0.35rem 42%;
  position: relative;
  text-align: left;
}

table td::before {
  content: attr(data-label);
  position: absolute;
  left: 0;
  width: 40%;
  font-weight: 700;
  color: var(--color-accent);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

@media (min-width: 700px) {
  table thead {
    display: table-header-group;
  }
  table tr {
    display: table-row;
    border: none;
    margin: 0;
    padding: 0;
    background: none;
  }
  table td,
  table th {
    display: table-cell;
    padding: 0.55rem 0.7rem;
  }
  table td {
    border: none;
    border-bottom: 1px solid rgba(22, 29, 44, 0.2);
  }
  table td::before {
    content: none;
    position: static;
    width: auto;
  }
  thead th {
    text-align: left;
    text-transform: uppercase;
    font-size: 0.72rem;
    letter-spacing: 0.05em;
    border-top: 3px double var(--color-ink);
    border-bottom: 2px solid var(--color-ink);
    padding: 0.5rem 0.7rem;
  }
}

.swatch-dot {
  display: inline-block;
  width: 0.9em;
  height: 0.9em;
  border: 1px solid var(--color-ink);
  vertical-align: middle;
  margin-right: 0.4em;
}

/* ---------- Procedure ---------- */

.procedure {
  list-style: none;
  counter-reset: step;
  margin: 0;
  padding: 0;
}

.procedure li {
  counter-increment: step;
  border-top: 1px solid var(--color-ink);
  padding: 1rem 0;
  position: relative;
  padding-left: 2.6rem;
}

.procedure li:last-child {
  border-bottom: 1px solid var(--color-ink);
}

.procedure li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 1rem;
  font-family: DejaVu Sans,Helvetica Neue,system-ui;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-accent);
  width: 2rem;
}

.procedure h3 {
  margin: 0 0 0.3rem;
}

.badge {
  display: inline-block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border: 1px solid var(--color-ink);
  padding: 0.1rem 0.5rem;
  margin-bottom: 0.5rem;
}

.failure {
  border-left: 3px solid var(--color-accent);
  padding-left: 0.7rem;
  margin-top: 0.5rem;
  font-size: 0.88rem;
}

.failure strong {
  color: var(--color-accent);
}

/* ---------- FAQ ---------- */

.faq {
  margin: 0;
  padding: 0;
}

.faq details {
  border-top: 1px solid var(--color-ink);
  padding: 0.8rem 0;
}

.faq details:last-child {
  border-bottom: 1px solid var(--color-ink);
}

.faq summary {
  font-family: DejaVu Sans,Helvetica Neue,system-ui;
  font-size: 1.05rem;
  cursor: pointer;
  font-weight: 700;
}

.faq summary::marker {
  color: var(--color-accent);
}

.faq p {
  margin: 0.6rem 0 0;
}

/* ---------- Figures ---------- */

figure {
  margin: 0 0 2rem;
  border: 1px solid var(--color-ink);
  padding: 1rem;
  background: #fff;
}

figcaption {
  margin-top: 0.7rem;
  font-size: 0.82rem;
  border-top: 1px solid var(--color-ink);
  padding-top: 0.5rem;
  font-style: italic;
}

.figure-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
  margin-bottom: 2rem;
}

@media (min-width: 760px) {
  .figure-grid.two-up {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- Footer ---------- */

footer {
  border-top: 5px double var(--color-ink);
  padding: 1.2rem 0 2rem;
  font-size: 0.82rem;
}

footer .disclaimer {
  font-style: italic;
  opacity: 0.85;
  margin: 0 0 0.6rem;
}

footer nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 1rem;
}

footer nav a {
  color: var(--color-ink);
}

/* ---------- Index-specific hero table intro ---------- */

.answer-box {
  border: 2px solid var(--color-ink);
  padding: 1rem 1.1rem;
  margin: 0 0 2rem;
  background: #fff;
}

.answer-box p {
  margin: 0;
  font-size: 1.05rem;
}

.answer-box .label {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.takeaways {
  margin: 0 0 2rem;
  padding-left: 1.2rem;
}

.takeaways li {
  margin-bottom: 0.4rem;
}