/* ==========================================================================
   Jaffan Systems — design system
   Reference: technical documentation and engineering drawings. Flat sheets,
   hairline rules that mark real boundaries, monospace reserved for facts.
   ========================================================================== */

/* --- fonts ---------------------------------------------------------------
   Self-hosted. Run scripts/fetch-fonts.sh to populate /static/fonts.
   The fallback stacks are chosen so the site is still correct without them. */

@font-face {
  font-family: "Archivo";
  src: url("/fonts/archivo-latin-wght-normal.woff2") format("woff2-variations");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Sans";
  src: url("/fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Sans";
  src: url("/fonts/ibm-plex-sans-latin-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Sans";
  src: url("/fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("/fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("/fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

/* --- tokens --------------------------------------------------------------- */

:root {
  /* Cool instrument-panel base. Two signal colours because the central object
     of this site is a two-line comparison chart. */
  --paper: #edf0f2;
  --sheet: #ffffff;
  --ink: #0f1a22;
  --slate: #55666f;
  --signal: #1546a0;   /* drafting-ink blue: links, CTA, the migration series */
  /* Status amber: the renewal series, warnings, unset markers. Never a heading.
     Darkened from a brighter amber so that 12px mono clears 4.5:1 on --paper. */
  --flag: #9a5d00;

  --rule: rgba(15, 26, 34, 0.14);
  --rule-firm: rgba(15, 26, 34, 0.32);
  --signal-wash: rgba(21, 70, 160, 0.07);
  --flag-wash: rgba(154, 93, 0, 0.09);

  --font-display: "Archivo", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-body: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --t-12: 0.75rem;
  --t-14: 0.875rem;
  --t-17: 1.0625rem;
  --t-21: 1.3125rem;
  --t-26: 1.625rem;
  --t-34: 2.125rem;

  --gap: 1.5rem;
  --pad: clamp(1.25rem, 4vw, 2.5rem);
  --measure: 68ch;
  --container: 1180px;
}

/* --- reset ---------------------------------------------------------------- */

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body,
h1, h2, h3, h4, p, ul, ol, li, figure, blockquote, dl, dd, fieldset, legend {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }
fieldset { border: 0; min-width: 0; }
img, svg { max-width: 100%; }
table { border-collapse: collapse; width: 100%; }

/* --- base ----------------------------------------------------------------- */

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--t-17);
  line-height: 1.6;
  font-feature-settings: "kern" 1;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.021em;
  text-wrap: balance;
}

h1 { font-size: clamp(2rem, 1.2rem + 2.6vw, 3.1rem); }
h2 { font-size: clamp(1.625rem, 1.3rem + 1.25vw, 2.3rem); }
h3 { font-size: var(--t-21); letter-spacing: -0.012em; }
h4 { font-size: var(--t-17); letter-spacing: -0.005em; }

p { text-wrap: pretty; }
p + p { margin-top: 0.9em; }

a { color: var(--signal); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }

strong { font-weight: 600; }

/* Every figure, count, version and price is set in mono. If a mono string does
   not state a fact, it should be body text instead. */
.spec {
  font-family: var(--font-mono);
  font-size: var(--t-14);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.label {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: 0.08em;
  color: var(--slate);
}

.lede {
  font-size: clamp(1.125rem, 1.02rem + 0.45vw, var(--t-21));
  line-height: 1.5;
  color: var(--ink);
}

.muted { color: var(--slate); }

/* Marks a fact that has not been supplied in application.yml. Impossible to
   miss on purpose — the site should not launch with any of these on a page. */
.unset {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  color: var(--flag);
  background: var(--flag-wash);
  border: 1px dashed var(--flag);
  border-radius: 2px;
  padding: 0.1em 0.45em;
  white-space: normal;
}

/* --- layout --------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.prose { max-width: var(--measure); }

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--sheet);
  padding: 0.6rem 1rem;
  z-index: 50;
}
.skip:focus { left: 0; }

section { padding-block: clamp(2.75rem, 6vw, 5rem); }
section + section { border-top: 1px solid var(--rule); }

.section-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.75rem;
  flex-wrap: wrap;
}

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

.utility {
  border-bottom: 1px solid var(--rule);
  background: var(--sheet);
}
.utility__inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-block: 0.45rem;
}
.utility a { color: var(--slate); text-decoration: none; }
.utility a:hover { color: var(--signal); text-decoration: underline; }

.masthead {
  background: var(--sheet);
  border-bottom: 1px solid var(--rule-firm);
}
.masthead__inner {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 2vw, 1.5rem);
  padding-block: 1rem;
  flex-wrap: wrap;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--ink);
  margin-right: auto;
}
.wordmark__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--t-21);
  letter-spacing: -0.028em;
  line-height: 1;
}
.wordmark__sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--slate);
  margin-top: 0.2rem;
}
.wordmark svg { flex: none; }

.nav ul {
  display: flex;
  gap: clamp(0.6rem, 1.3vw, 1.05rem);
  flex-wrap: wrap;
}
.nav a {
  font-size: 0.9375rem;
  white-space: nowrap;
  color: var(--ink);
  text-decoration: none;
  padding-block: 0.35rem;
  border-bottom: 2px solid transparent;
}
.nav a:hover { border-bottom-color: var(--rule-firm); }
.nav a[aria-current="page"] { border-bottom-color: var(--signal); color: var(--signal); }

/* Reserved for a Proxmox partner badge once the application is granted.
   Hidden until site.partner.enabled is true; the layout does not shift. */
.partner-badge {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  border: 1px solid var(--rule-firm);
  padding: 0.2rem 0.5rem;
  color: var(--slate);
}

/* --- title block ---------------------------------------------------------
   Borrowed from the corner of an engineering drawing. Carries real metadata
   only: section number, page name, revision date. */

.titleblock {
  background: var(--sheet);
  border-bottom: 1px solid var(--rule);
}
.titleblock__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: stretch;
  border-left: 1px solid var(--rule);
}
.titleblock__cell {
  padding: 0.55rem clamp(0.6rem, 2vw, 1.1rem);
  border-right: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: 0.07em;
  color: var(--slate);
  display: flex;
  align-items: center;
}
.titleblock__cell--name { color: var(--ink); }

/* --- hero ----------------------------------------------------------------- */

.hero { padding-block: clamp(2.5rem, 5vw, 4rem); }

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(1.75rem, 4vw, 3.25rem);
  align-items: start;
}

.hero__eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: 0.09em;
  color: var(--flag);
  border-left: 2px solid var(--flag);
  padding-left: 0.6rem;
  margin-bottom: 1.1rem;
}

.hero h1 { margin-bottom: 1.1rem; }
.hero .lede { margin-bottom: 1.6rem; }

/* Above-the-fold proof. Specific numbers, not adjectives. */
.provenance {
  border-top: 1px solid var(--rule-firm);
  margin-top: 2rem;
  padding-top: 1rem;
}
.provenance dl {
  display: grid;
  grid-template-columns: minmax(9rem, auto) 1fr;
  gap: 0.4rem 1rem;
}
.provenance dt {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: 0.06em;
  color: var(--slate);
  padding-top: 0.15rem;
}
.provenance dd {
  font-family: var(--font-mono);
  font-size: var(--t-14);
  font-variant-numeric: tabular-nums;
}

/* --- buttons -------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.6rem 1.15rem;
  font-family: var(--font-body);
  font-size: var(--t-17);
  font-weight: 500;
  line-height: 1.2;
  border: 1px solid var(--signal);
  background: var(--signal);
  color: var(--sheet);
  text-decoration: none;
  cursor: pointer;
  border-radius: 2px;
  transition: background-color 120ms ease, color 120ms ease;
}
.btn:hover { background: #103a86; border-color: #103a86; }

.btn--ghost {
  background: transparent;
  color: var(--signal);
}
.btn--ghost:hover { background: var(--signal-wash); color: var(--signal); border-color: var(--signal); }

.btn--quiet {
  background: transparent;
  border-color: var(--rule-firm);
  color: var(--ink);
  font-size: var(--t-14);
  min-height: 40px;
}
.btn--quiet:hover { background: var(--paper); border-color: var(--ink); color: var(--ink); }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem 1.25rem;
}

.cta-note {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  color: var(--slate);
}

/* --- cards ---------------------------------------------------------------- */

/* Hairlines are drawn as rings on the cards themselves rather than as a grey backing
   showing through 1px gaps: with an odd number of cards the trailing cell of the last
   row stays white instead of leaving a grey block. */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
  gap: 0;
  background: var(--sheet);
}

.card {
  background: var(--sheet);
  box-shadow: 0 0 0 1px var(--rule);
  padding: clamp(1.25rem, 2.5vw, 1.75rem);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}
.card__spec {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: 0.04em;
  color: var(--slate);
}
.card h3 a { color: inherit; text-decoration: none; }
.card h3 a:hover { color: var(--signal); }
.card p { font-size: var(--t-14); line-height: 1.55; color: var(--ink); }
.card__more {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: 0.04em;
}
.card__list li {
  display: grid;
  grid-template-columns: 1.1rem 1fr;
  gap: 0.4rem;
  font-size: var(--t-14);
  line-height: 1.5;
  padding-block: 0.25rem;
}
.card__list li::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: var(--t-14);
  color: var(--signal);
}
.card__list li.card__list-base::before { content: "="; color: var(--slate); }

/* --- plan comparison -------------------------------------------------------
   One row per promise, one column per plan. Marks are text, not icons, so the
   table reads aloud and prints the same way it renders. */
.compare th.plan,
.compare td.mark {
  text-align: center;
  padding-left: 0.75rem;
  padding-right: 0.75rem;
}
.compare td.mark { font-family: var(--font-mono); }
.compare td.mark.yes { color: var(--signal); }
.compare td.mark.no { color: var(--slate); }
.compare tr.price-row td {
  border-top: 1px solid var(--rule-firm);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

/* --- numbered process ------------------------------------------------------
   Numbered because the engagement genuinely is sequential. Nothing else on the
   site is numbered. */

.steps { border-top: 1px solid var(--rule); }
.step {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 0 clamp(1rem, 3vw, 2rem);
  padding-block: 1.6rem;
  border-bottom: 1px solid var(--rule);
}
.step__n {
  font-family: var(--font-mono);
  font-size: var(--t-21);
  color: var(--signal);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.step__body h3 { margin-bottom: 0.4rem; }
.step__body p { max-width: var(--measure); }
.step__meta {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  color: var(--slate);
  margin-top: 0.5rem;
}

/* --- scope table -----------------------------------------------------------
   What is not included gets the same weight as what is. */

.scope {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.scope__col { background: var(--sheet); padding: clamp(1.1rem, 2.5vw, 1.5rem); }
.scope__col h3 {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--slate);
  padding-bottom: 0.7rem;
  margin-bottom: 0.9rem;
  border-bottom: 1px solid var(--rule);
}
.scope li {
  display: grid;
  grid-template-columns: 1.4rem 1fr;
  gap: 0.5rem;
  font-size: var(--t-14);
  line-height: 1.5;
  padding-block: 0.4rem;
}
.scope li + li { border-top: 1px solid var(--rule); }
.scope li::before {
  font-family: var(--font-mono);
  font-size: var(--t-14);
}
.scope__col--in li::before { content: "+"; color: var(--signal); }
.scope__col--out li::before { content: "−"; color: var(--flag); }

/* --- spec / price sheet ---------------------------------------------------- */

.sheet {
  background: var(--sheet);
  border: 1px solid var(--rule);
  padding: clamp(1.25rem, 3vw, 2rem);
}

.datatable { font-size: var(--t-14); }
.datatable caption {
  text-align: left;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: 0.08em;
  color: var(--slate);
  padding-bottom: 0.6rem;
}
.datatable th,
.datatable td {
  text-align: left;
  padding: 0.55rem 0.75rem 0.55rem 0;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
.datatable thead th {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: var(--t-12);
  letter-spacing: 0.06em;
  color: var(--slate);
  border-bottom: 1px solid var(--rule-firm);
}
.datatable td.num,
.datatable th.num {
  text-align: right;
  padding-right: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}
.datatable tbody tr:last-child td { border-bottom: 0; }
.datatable tr.total td {
  border-top: 1px solid var(--rule-firm);
  font-weight: 600;
}

.table-scroll { overflow-x: auto; }

.price {
  font-family: var(--font-mono);
  font-size: var(--t-26);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  display: block;
}
.price__unit {
  font-size: var(--t-14);
  color: var(--slate);
  letter-spacing: 0;
}

/* --- calculator ------------------------------------------------------------ */

.calc {
  background: var(--sheet);
  border: 1px solid var(--rule-firm);
}
.calc__head {
  padding: 1rem clamp(1rem, 2.5vw, 1.5rem);
  border-bottom: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
}
.calc__head h2 {
  font-size: var(--t-21);
  letter-spacing: -0.015em;
}
.calc__body { padding: clamp(1rem, 2.5vw, 1.5rem); }

.field-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 8.5rem), 1fr));
  gap: 0.9rem;
}

.field { display: flex; flex-direction: column; gap: 0.3rem; }
.field label {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: 0.04em;
  color: var(--slate);
}
.field__hint {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--slate);
}

input[type="text"],
input[type="email"],
input[type="number"],
select,
textarea {
  font-family: var(--font-mono);
  font-size: var(--t-14);
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--rule-firm);
  border-radius: 2px;
  padding: 0.55rem 0.6rem;
  min-height: 44px;
  width: 100%;
}
textarea { min-height: 9rem; line-height: 1.55; resize: vertical; }
select { appearance: none; background-image: none; }

input:hover, select:hover, textarea:hover { border-color: var(--ink); }

.legend {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: 0.08em;
  color: var(--slate);
  padding-bottom: 0.7rem;
  margin-bottom: 0.9rem;
  border-bottom: 1px solid var(--rule);
  width: 100%;
}

/* Headline readout */
.readout {
  display: grid;
  /* 14rem so the four cells land as 2x2 in the hero column rather than 3+1 with a gap. */
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  margin-block: 1.5rem;
}
.readout__cell { background: var(--sheet); padding: 0.9rem 1rem; }
.readout__label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: 0.05em;
  color: var(--slate);
  margin-bottom: 0.3rem;
}
.readout__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.375rem, 1.2rem + 0.8vw, 1.75rem);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.025em;
  line-height: 1.15;
}
.readout__value--signal { color: var(--signal); }
.readout__value--flag { color: var(--flag); }
.readout__note {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--slate);
  margin-top: 0.25rem;
}

/* Chart */
.chart { display: block; width: 100%; height: auto; }
.chart__grid { stroke: var(--rule); stroke-width: 1; }
.chart__axis { stroke: var(--rule-firm); stroke-width: 1; }
.chart__gridlabel,
.chart__ticklabel {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--slate);
}
.chart__gridlabel { text-anchor: end; }
.chart__ticklabel { text-anchor: middle; }
.chart__series { fill: none; stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; }
.chart__series--renew { stroke: var(--flag); }
.chart__series--migrate { stroke: var(--signal); }
.chart__area { fill: var(--signal-wash); stroke: none; }
.chart__cross { stroke: var(--ink); stroke-width: 1; stroke-dasharray: 3 3; }
.chart__crossdot { fill: var(--sheet); stroke: var(--ink); stroke-width: 2; }
.chart__crosslabel {
  font-family: var(--font-mono);
  font-size: 11px;
  fill: var(--ink);
}

.chart-key {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.25rem;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  color: var(--slate);
  margin-top: 0.5rem;
}
.chart-key span { display: inline-flex; align-items: center; gap: 0.45rem; }
.chart-key i {
  width: 1.1rem;
  height: 0;
  border-top: 3px solid currentColor;
  display: inline-block;
}
.chart-key .k-renew { color: var(--flag); }
.chart-key .k-migrate { color: var(--signal); }

.assumptions { margin-top: 1.5rem; border-top: 1px solid var(--rule-firm); padding-top: 1rem; }
.assumptions > summary {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: 0.06em;
  color: var(--slate);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 32px;
}
.assumptions > summary::-webkit-details-marker { display: none; }
.assumptions > summary::before { content: "▾"; color: var(--signal); }
.assumptions:not([open]) > summary::before { content: "▸"; }
.assumptions__body { padding-top: 1rem; }

.calc__foot {
  border-top: 1px solid var(--rule);
  padding: 1rem clamp(1rem, 2.5vw, 1.5rem);
  background: var(--paper);
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
  align-items: center;
  justify-content: space-between;
}

.disclaimer {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  line-height: 1.55;
  color: var(--slate);
  border-left: 2px solid var(--flag);
  padding-left: 0.75rem;
  margin-top: 1.25rem;
}

.htmx-request .calc-busy { opacity: 1; }
.calc-busy {
  opacity: 0;
  transition: opacity 120ms ease;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  color: var(--slate);
}

/* --- forms ---------------------------------------------------------------- */

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  gap: 1.1rem;
}
.form-grid .field--wide { grid-column: 1 / -1; }

.field-error {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  color: var(--flag);
}
input[aria-invalid="true"],
textarea[aria-invalid="true"] { border-color: var(--flag); }

.honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.notice {
  border: 1px solid var(--rule-firm);
  border-left: 3px solid var(--signal);
  background: var(--sheet);
  padding: 1rem 1.25rem;
}
.notice--warn { border-left-color: var(--flag); }

/* --- callout -------------------------------------------------------------- */

.callout {
  border-top: 1px solid var(--rule-firm);
  border-bottom: 1px solid var(--rule-firm);
  padding-block: clamp(1.5rem, 3vw, 2.25rem);
}

.cta-block {
  background: var(--sheet);
  border: 1px solid var(--rule-firm);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.5rem;
  align-items: center;
}
.cta-block h2 { font-size: clamp(1.5rem, 1.25rem + 1vw, 2rem); margin-bottom: 0.5rem; }

/* --- footer --------------------------------------------------------------- */

.footer {
  background: var(--sheet);
  border-top: 1px solid var(--rule-firm);
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
  padding-block: clamp(2rem, 4vw, 3rem);
}
.footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr));
  gap: 2rem;
}
.footer h2 {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--slate);
  margin-bottom: 0.85rem;
}
.footer li + li { margin-top: 0.4rem; }
.footer a { color: var(--ink); text-decoration: none; font-size: var(--t-14); }
.footer a:hover { color: var(--signal); text-decoration: underline; }
.footer__legal {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  color: var(--slate);
}

/* --- focus ---------------------------------------------------------------- */

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
  border-radius: 1px;
}
.btn:focus-visible { outline-offset: 3px; }

/* --- motion ----------------------------------------------------------------
   One page-load sequence and nothing else. */

@keyframes rule-draw {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}
@keyframes lift {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

.titleblock__inner { animation: rule-draw 420ms cubic-bezier(0.2, 0.7, 0.3, 1) both; transform-origin: left; }
.hero > .container > * { animation: lift 380ms ease-out both; }
.hero__grid > :nth-child(1) { animation: lift 380ms 60ms ease-out both; }
.hero__grid > :nth-child(2) { animation: lift 380ms 140ms ease-out both; }

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* --- responsive ------------------------------------------------------------ */

@media (max-width: 60rem) {
  /* minmax(0, 1fr) rather than 1fr: a bare fr track takes its automatic minimum from the
     item's min-content, which lets a wide descendant push the whole page sideways. */
  .hero__grid { grid-template-columns: minmax(0, 1fr); }
  .cta-block { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 44rem) {
  .masthead__inner { align-items: flex-start; }
  .nav { width: 100%; order: 3; }
  .nav ul { gap: 0.4rem 1rem; }
  .titleblock__inner { grid-template-columns: 1fr; }
  .titleblock__cell { border-bottom: 1px solid var(--rule); }
  .provenance dl { grid-template-columns: 1fr; gap: 0.15rem; }
  .provenance dd { margin-bottom: 0.6rem; }
  .step { grid-template-columns: 1fr; gap: 0.35rem; }
  .footer__legal { flex-direction: column; }
}

@media print {
  .masthead, .utility, .footer, .btn, .calc__foot { display: none; }
  body { background: #fff; }
}