/* Layout: the site is a set of drawing sheets. Framed bands on drafting film,
   indigo ink for linework and process bands, red-pen markup as the one accent. */

@font-face {
  font-family: "Archivo";
  src: url("/assets/fonts/archivo-var.woff2") format("woff2");
  font-weight: 400 800;
  font-stretch: 100% 125%;
  font-display: swap;
}
@font-face {
  font-family: "Martian Mono";
  src: url("/assets/fonts/martian-mono-var.woff2") format("woff2");
  font-weight: 400 600;
  font-display: swap;
}

:root {
  --paper: #EEF1F5;        /* drafting film */
  --sheet: #FFFFFF;
  --wash: #DCE3F1;         /* blue-grey fill */
  --ink: #1B2559;          /* diazo indigo */
  --ink-2: #46507A;
  --ink-3: #5B6488;
  --line: #C9D0E2;
  --line-strong: #7C86AC;
  --redline: #D3261B;      /* markup red */
  --redline-deep: #B8190F;
  --on-ink: #EEF1F5;
  --on-ink-2: #B4BCE0;
  --ink-line: rgba(238, 241, 245, .16);
  --grid: rgba(27, 37, 89, .055);
  --grid-major: rgba(27, 37, 89, .1);

  --font-display: "Archivo", "Arial", "Helvetica Neue", sans-serif;
  --font-body: "Archivo", "Arial", "Helvetica Neue", sans-serif;
  --font-mono: "Martian Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --wrap: 78rem;
  --gutter: 1rem;
  color-scheme: light;
}
@media (min-width: 48rem) { :root { --gutter: 2rem; } }

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, p { margin: 0; }
img, svg { max-width: 100%; }
a { color: var(--ink); text-underline-offset: .18em; text-decoration-thickness: 1px; }
:focus-visible { outline: 3px solid var(--redline); outline-offset: 3px; }

.wrap {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-left: max(var(--gutter), env(safe-area-inset-left, 0px));
  padding-right: max(var(--gutter), env(safe-area-inset-right, 0px));
}
.icon-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.icon { width: 1.1em; height: 1.1em; flex: none; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.skip-link { position: absolute; left: -999px; top: 0; z-index: 100; background: var(--sheet); color: var(--ink); padding: .6rem 1rem; }
.skip-link:focus { left: 1rem; top: 1rem; }

/* ---- Shared type ---------------------------------------------------- */

.kicker {
  display: inline-flex; align-items: center; gap: .6rem;
  font: 500 .75rem/1.3 var(--font-mono);
  letter-spacing: .08em; text-transform: uppercase;
  color: var(--ink-2);
}
.kicker::before { content: ""; width: 1.5rem; height: 1px; background: currentColor; flex: none; }
.kicker-on-ink { color: var(--on-ink-2); }

.note-label {
  font: 600 .625rem/1 var(--font-mono);
  letter-spacing: .1em; text-transform: uppercase;
  border: 1px solid currentColor;
  padding: .3rem .4rem;
  margin-top: .15rem;
  white-space: nowrap;
}

/* ---- Buttons and links ---------------------------------------------- */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .6rem;
  font: 700 1rem/1.15 var(--font-display); font-stretch: 110%;
  padding: .95rem 1.35rem; min-height: 3rem;
  border: 0; border-radius: 0;
  text-decoration: none; cursor: pointer;
  transition: background-color .15s, transform .15s, box-shadow .15s;
}
.btn .icon { width: 1.15rem; height: 1.15rem; transition: transform .15s; }
.btn:hover .icon { transform: translateX(3px); }
.btn-red { background: var(--redline); color: #FFFFFF; box-shadow: 4px 4px 0 var(--ink); }
.btn-red:hover { background: var(--redline-deep); transform: translate(-1px, -1px); box-shadow: 5px 5px 0 var(--ink); }
.btn-red:active { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--ink); }
.btn-ink { background: var(--ink); color: var(--on-ink); box-shadow: 4px 4px 0 var(--line-strong); }
.btn-ink:hover { background: #2A3670; transform: translate(-1px, -1px); box-shadow: 5px 5px 0 var(--line-strong); }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .7; cursor: progress; }

.link-arrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font: 700 1rem/1.2 var(--font-display); font-stretch: 108%;
  color: var(--ink); text-decoration: none;
  padding-block: .45rem;
  border-bottom: 2px solid var(--line-strong);
  transition: border-color .15s;
}
.link-arrow::after { content: "\2192"; font-family: var(--font-body); transition: transform .15s; }
.link-arrow:hover { border-bottom-color: var(--redline); }
.link-arrow:hover::after { transform: translateX(3px); }

.link-button { background: none; border: 0; padding: 0; font: inherit; color: inherit; text-decoration: underline; text-underline-offset: .18em; cursor: pointer; }

/* ---- Header --------------------------------------------------------- */

.site-header { background: var(--ink); color: var(--on-ink); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: .8rem; }
.brand { display: flex; align-items: center; gap: .7rem; color: inherit; text-decoration: none; min-width: 0; }
.brand-mark { width: 2.1rem; height: 2.1rem; flex: none; }
.brand-text { display: grid; gap: .15rem; min-width: 0; }
.brand-name { font: 800 1.0625rem/1.1 var(--font-display); font-stretch: 116%; letter-spacing: -.005em; }
.brand-note { font: 400 .625rem/1.3 var(--font-mono); color: var(--on-ink-2); letter-spacing: .02em; }
.site-nav { display: flex; align-items: center; gap: 1.75rem; }
.nav-link { color: var(--on-ink); text-decoration: none; font: 600 .9375rem/1 var(--font-display); font-stretch: 108%; padding-block: .5rem; border-bottom: 1px solid transparent; }
.nav-link:hover { border-bottom-color: var(--on-ink-2); }
.nav-cta { padding: .6rem 1rem; min-height: 2.5rem; font-size: .9375rem; box-shadow: none; }
.nav-cta:hover { box-shadow: none; transform: none; }
.cta-short { display: none; }
@media (max-width: 52rem) { .nav-link { display: none; } }
@media (max-width: 34rem) {
  .cta-long { display: none; }
  .cta-short { display: inline; }
  .brand-note { font-size: .5625rem; }
}

/* ---- Bands ---------------------------------------------------------- */

.band { padding-block: clamp(3.5rem, 7vw, 6rem); }
.band-sheet { background: var(--sheet); }
.band-paper { background: var(--paper); }
.band-ink { background: var(--ink); color: var(--on-ink); }
.hero, .band-grid, .page-band {
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-major) 1px, transparent 1px),
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px;
  background-position: -1px -1px;
}

.section-head { display: grid; gap: .85rem; max-width: 44rem; margin-bottom: clamp(2rem, 4vw, 3rem); }
.section-head h2, .enquiry-intro h2 {
  font: 800 clamp(2rem, 1.3rem + 2.6vw, 3.25rem)/1.02 var(--font-display);
  font-stretch: 122%; letter-spacing: -.015em; text-wrap: balance;
}
.section-head p:not(.kicker) { font-size: 1.125rem; color: var(--ink-2); }
.band-ink .section-head p:not(.kicker) { color: var(--on-ink-2); }
.band-ink a { color: var(--on-ink); }

/* ---- Drawing sheet frame + title block ------------------------------ */

.sheet-frame { border: 1px solid var(--line-strong); }
.frame-zones { display: grid; grid-template-columns: repeat(6, 1fr); border-bottom: 1px solid var(--line); }
.frame-zones span {
  font: 500 .625rem/1 var(--font-mono); color: var(--ink-3);
  text-align: center; padding: .45rem 0;
}
.frame-zones span + span { border-left: 1px solid var(--line); }

.title-block {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px; margin: 0;
  background: var(--line);
  border-top: 1px solid var(--line-strong);
}
.title-block div { background: var(--paper); padding: .7rem 1rem .8rem; min-width: 0; }
.title-block dt { font: 500 .625rem/1.3 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); }
.title-block dd { margin: .25rem 0 0; font: 600 .9375rem/1.35 var(--font-display); font-stretch: 106%; }
@media (min-width: 56rem) { .title-block { grid-template-columns: repeat(4, minmax(0, 1fr)); } }

/* ---- Hero ----------------------------------------------------------- */

.hero { padding-block: clamp(1rem, 3vw, 2.5rem) clamp(2.5rem, 5vw, 4rem); }
.hero-grid {
  display: grid; gap: 2.5rem; align-items: center;
  padding: clamp(1.75rem, 4vw, 3.5rem) clamp(1rem, 3vw, 3rem) clamp(1.75rem, 3vw, 2.75rem);
}
@media (min-width: 64rem) { .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 3.5rem; } }
.hero-copy { min-width: 0; }
.hero h1 {
  font: 800 clamp(2.25rem, 1.3rem + 3vw, 3.6rem)/1.0 var(--font-display);
  font-stretch: 116%; letter-spacing: -.02em;
  margin: 1.25rem 0 1.5rem; text-wrap: balance;
}
@media (max-width: 26rem) { .hero h1 { font-stretch: 104%; } }
.redline {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 12' preserveAspectRatio='none'%3E%3Cpath d='M3 8.5C34 3.5 66 10.5 101 6.5S168 3 197 7.5' fill='none' stroke='%23D3261B' stroke-width='3' stroke-linecap='round' vector-effect='non-scaling-stroke'/%3E%3C/svg%3E") no-repeat left 96% / 100% .3em;
  padding-bottom: .08em;
  -webkit-box-decoration-break: clone; box-decoration-break: clone;
}
.lede { font-size: clamp(1.0625rem, 1rem + .35vw, 1.25rem); line-height: 1.6; color: var(--ink-2); max-width: 38rem; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1.25rem 1.75rem; margin-top: 2rem; }
.drawing-note {
  display: grid; grid-template-columns: auto 1fr; gap: .75rem; align-items: start;
  margin-top: 2rem; max-width: 36rem;
  font-size: .875rem; line-height: 1.55; color: var(--ink-2);
}
.hero-visual { min-width: 0; }
.hero-art { display: block; width: 100%; height: auto; max-width: 42rem; margin-inline: auto; overflow: visible; }

/* Hero illustration */
.art-shadow { fill: rgba(27, 37, 89, .1); }
.art-sheet { fill: var(--sheet); stroke: var(--line-strong); stroke-width: 1; }
.art-sheet-strong { stroke: var(--ink); }
.art-ortho { fill: #C3CCE4; }
.art-grid-lines { fill: none; stroke: rgba(255, 255, 255, .6); stroke-width: .75; }
.art-road { fill: none; stroke: #E8ECF5; stroke-width: 9; stroke-linecap: round; }
.art-contour { fill: none; stroke: var(--line-strong); stroke-width: 1; }
.art-footprint { fill: #8E99C2; stroke: var(--ink); stroke-width: 1; }
.art-sky { fill: #C9D2EA; }
.art-ground { fill: #8E99C2; }
.art-slab { fill: none; stroke: var(--ink); stroke-width: 3; }
.art-column { fill: none; stroke: var(--ink); stroke-width: 2; }
.art-crane { fill: none; stroke: var(--ink); stroke-width: 2; stroke-linejoin: round; }
.art-crane-lattice { fill: none; stroke: var(--ink); stroke-width: 1; }
.art-ink-fill { fill: var(--ink); }
.art-ink-thin { fill: none; stroke: var(--ink); stroke-width: 1; }
.art-border { fill: none; stroke: var(--ink); stroke-width: .75; }
.art-chain { fill: none; stroke: #8E99C2; stroke-width: .75; stroke-dasharray: 10 3 2 3; }
.art-bubble circle { fill: var(--sheet); stroke: var(--ink); stroke-width: 1; }
.art-bubble-text text { font: 600 9px var(--font-mono); fill: var(--ink); text-anchor: middle; }
.art-wall { fill: none; stroke: var(--ink); stroke-width: 4.5; }
.art-wall-thin { fill: none; stroke: var(--ink); stroke-width: 2.5; }
.art-tb { fill: var(--sheet); stroke: var(--ink); stroke-width: .75; }
.art-tb-title { font: 800 13px var(--font-display); font-stretch: 112%; fill: var(--ink); }
.art-label { font: 500 9px var(--font-mono); letter-spacing: .04em; fill: var(--ink-2); }
.art-small { font-size: 7px; }
.art-label-inv { fill: var(--on-ink); }
.art-middle { text-anchor: middle; }
.art-chip { fill: none; stroke: var(--on-ink); stroke-width: .75; }
.art-bar { fill: var(--line); }
.art-bar-ink { fill: #8E99C2; }
.art-cloud { fill: none; stroke: var(--redline); stroke-width: 1.75; stroke-linejoin: round; }
.art-delta { fill: var(--sheet); stroke: var(--redline); stroke-width: 1.5; stroke-linejoin: round; }
.art-delta-text { font: 600 8px var(--font-mono); fill: var(--redline); text-anchor: middle; }
.art-leader { fill: none; stroke: var(--redline); stroke-width: 1.25; }
.art-markup-text { font: 600 11px var(--font-mono); fill: var(--redline); }

/* ---- What qualifies ------------------------------------------------- */

.criteria { list-style: none; margin: 0; padding: 0; display: grid; border-top: 2px solid var(--ink); }
.criteria li { padding: 1.5rem 0 1.75rem; border-bottom: 1px solid var(--line); }
@media (min-width: 48rem) {
  .criteria { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .criteria li { padding-right: 1.75rem; }
  .criteria li + li { border-left: 1px solid var(--line); padding-left: 1.75rem; }
}
.criteria-icon { width: 2.5rem; height: 2.5rem; fill: none; stroke: var(--ink); stroke-width: 1.4; stroke-linejoin: round; stroke-linecap: round; }
.criteria h3 { font: 700 1.25rem/1.2 var(--font-display); font-stretch: 112%; margin: 1rem 0 .5rem; text-wrap: balance; }
.criteria p { color: var(--ink-2); }

.records { margin-top: 3rem; }
.records-title { font: 700 1rem/1.3 var(--font-display); font-stretch: 110%; margin-bottom: 1rem; }
.record-list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .5rem; }
.record-list li {
  display: inline-flex; align-items: center; gap: .55rem;
  font: 500 .8125rem/1.2 var(--font-mono);
  padding: .55rem .8rem;
  border: 1px solid var(--line-strong);
  background: var(--paper);
}
.record-list li::before { content: ""; width: .5rem; height: .5rem; border: 1.5px solid var(--ink); flex: none; }
.records-note { margin-top: 1.5rem; color: var(--ink-2); max-width: 62ch; }

/* ---- How it works: steps on a dimension line ------------------------ */

.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 2.25rem; position: relative; }
.steps::before { content: ""; position: absolute; left: 1.25rem; top: 0; bottom: 0; border-left: 1px solid var(--on-ink-2); }
.steps li { position: relative; padding-left: 3.75rem; }
.bubble {
  position: absolute; left: 0; top: -.35rem; z-index: 1;
  width: 2.5rem; height: 2.5rem; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--ink); border: 1.5px solid var(--on-ink);
  font: 600 .9375rem/1 var(--font-mono); color: var(--on-ink);
}
.steps h3 { font: 700 1.25rem/1.2 var(--font-display); font-stretch: 112%; margin-bottom: .5rem; }
.steps p { color: var(--on-ink-2); }
@media (min-width: 56rem) {
  .steps { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 2.5rem; padding-top: .25rem; }
  .steps::before { left: 0; right: 0; top: 1.5rem; bottom: auto; border-left: 0; border-top: 1px solid var(--on-ink-2); }
  .steps::after { content: ""; position: absolute; left: 0; right: 0; top: .9rem; height: 1.2rem; border-left: 1px solid var(--on-ink-2); border-right: 1px solid var(--on-ink-2); }
  .steps li { padding-left: 0; padding-top: 3.75rem; }
  .bubble { top: .25rem; left: 1.25rem; }
}

/* ---- Cards ---------------------------------------------------------- */

.cards-title { font: 500 .75rem/1.3 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); margin: 0 0 1rem; }
.cards { list-style: none; margin: 0 0 3rem; padding: 0; display: grid; gap: 1rem; }
.cards:last-child { margin-bottom: 0; }
@media (min-width: 40rem) { .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 39.99rem) {
  .cards-sector, .cards-system { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .75rem; }
  .cards-sector .card, .cards-system .card { padding: 1rem; gap: .35rem; }
  .cards-sector .card-text, .cards-system .card-text { display: none; }
  .cards-sector .card-title, .cards-system .card-title { flex: 1; font-size: 1rem; }
}
@media (min-width: 64rem) {
  .cards-sector { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .cards-system { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
.card {
  height: 100%;
  display: flex; flex-direction: column; gap: .5rem;
  padding: 1.25rem 1.25rem 1.1rem;
  background: var(--sheet); color: var(--ink);
  border: 1px solid var(--line);
  text-decoration: none;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}
.card:hover { border-color: var(--ink); transform: translate(-2px, -2px); box-shadow: 4px 4px 0 var(--ink); }
.card-icon { width: 1.9rem; height: 1.9rem; margin-bottom: .35rem; fill: none; stroke: var(--ink); stroke-width: 1.4; stroke-linejoin: round; stroke-linecap: round; }
.card-kicker { font: 500 .6875rem/1.3 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); }
.card-title { font: 700 1.125rem/1.25 var(--font-display); font-stretch: 110%; text-wrap: balance; }
.card-text { flex: 1; font-size: .9375rem; line-height: 1.5; color: var(--ink-2); }
.card-more { display: inline-flex; align-items: center; gap: .4rem; margin-top: .5rem; font: 700 .875rem/1.2 var(--font-display); font-stretch: 108%; }
.card-more .icon { width: 1rem; height: 1rem; transition: transform .15s; }
.card:hover .card-more .icon, .feature-card:hover .card-more .icon { transform: translateX(3px); }

.feature-card {
  display: grid; gap: .75rem; justify-items: start;
  margin-bottom: 3rem;
  padding: clamp(1.5rem, 3.5vw, 2.5rem);
  background-color: var(--ink);
  background-image: linear-gradient(var(--ink-line) 1px, transparent 1px), linear-gradient(90deg, var(--ink-line) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--on-ink); text-decoration: none;
  border: 1px solid var(--ink);
  transition: transform .15s, box-shadow .15s;
}
.feature-card:hover { transform: translate(-3px, -3px); box-shadow: 6px 6px 0 var(--redline); }
.feature-card .card-kicker { color: var(--on-ink-2); }
.feature-title { font: 800 clamp(1.625rem, 1.15rem + 1.8vw, 2.5rem)/1.05 var(--font-display); font-stretch: 120%; letter-spacing: -.01em; max-width: 22ch; text-wrap: balance; }
.feature-card .card-text { color: var(--on-ink-2); max-width: 60ch; font-size: 1rem; }
.feature-card .card-more { color: var(--on-ink); }

/* ---- Enquiry -------------------------------------------------------- */

#enquiry:focus { outline: none; }
.enquiry { display: grid; gap: 2.5rem; }
@media (min-width: 64rem) { .enquiry { grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 4rem; align-items: start; } }
.enquiry-intro .kicker { margin-bottom: .85rem; }
.enquiry-intro > p:not(.kicker) { margin-top: .85rem; font-size: 1.125rem; color: var(--ink-2); max-width: 34rem; }
.next-title { font: 700 1rem/1.3 var(--font-display); font-stretch: 110%; margin: 2.25rem 0 1rem; }
.next-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: .85rem; counter-reset: next; }
.next-steps li { counter-increment: next; display: grid; grid-template-columns: 2rem 1fr; gap: .85rem; align-items: center; }
.next-steps li::before {
  content: counter(next);
  width: 2rem; height: 2rem; border-radius: 50%;
  display: grid; place-items: center;
  border: 1.5px solid var(--ink); background: var(--sheet);
  font: 600 .8125rem/1 var(--font-mono);
}

.form-card {
  background: var(--sheet);
  border: 1px solid var(--ink);
  padding: clamp(1.25rem, 3.5vw, 2.25rem);
  box-shadow: 5px 5px 0 -1px var(--sheet), 5px 5px 0 0 var(--line-strong);
}
@media (min-width: 48rem) { .form-card { box-shadow: 8px 8px 0 -1px var(--sheet), 8px 8px 0 0 var(--line-strong); } }
.disclosure {
  display: grid; grid-template-columns: auto 1fr; gap: .75rem; align-items: start;
  margin-bottom: 1.5rem; padding: .9rem 1rem;
  background: var(--wash);
  font-size: .9375rem; line-height: 1.5;
}
.disclosure-on-ink { background: rgba(238, 241, 245, .08); color: var(--on-ink); margin: 0; }
.req-note { font-size: .875rem; color: var(--ink-3); margin-bottom: 1.25rem; }
.field-row { display: grid; gap: 0 1.25rem; }
@media (min-width: 36rem) { .field-row { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.field { margin-bottom: 1.25rem; min-width: 0; }
.field label { display: block; font: 600 .9375rem/1.3 var(--font-body); margin-bottom: .45rem; }
.optional { font-weight: 400; color: var(--ink-3); }
.field input[type="text"], .field input[type="email"], .field input[type="tel"], .field select {
  width: 100%; min-height: 3rem;
  padding: .75rem .85rem;
  font: 400 1rem/1.4 var(--font-body); color: var(--ink);
  background-color: var(--sheet);
  border: 1.5px solid var(--line-strong); border-radius: 0;
  transition: border-color .15s, box-shadow .15s;
}
.field select {
  -webkit-appearance: none; appearance: none;
  padding-right: 2.75rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='m6 9 6 6 6-6' fill='none' stroke='%231B2559' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right .85rem center; background-size: 1.1rem;
}
.field input:focus, .field select:focus { outline: none; border-color: var(--ink); box-shadow: 0 0 0 3px rgba(211, 38, 27, .3); }
.hint { margin-top: .4rem; font-size: .8125rem; line-height: 1.45; color: var(--ink-3); }
.error { margin-top: .4rem; font-size: .875rem; font-weight: 600; color: var(--redline-deep); }
[aria-invalid="true"] { border-color: var(--redline-deep) !important; }
.field-check {
  display: grid; grid-template-columns: auto 1fr; gap: .75rem; align-items: start;
  padding: 1rem; background: var(--wash);
}
.field-check input { width: 1.3rem; height: 1.3rem; margin: .1rem 0 0; accent-color: var(--ink); }
.field-check label { margin: 0; font-weight: 400; line-height: 1.5; }
.field-check .error { grid-column: 1 / -1; margin-top: 0; }
.turnstile:not(:empty) { margin-bottom: 1rem; }
.success { display: grid; gap: .6rem; padding: 1.5rem; border: 1px solid var(--ink); background: var(--paper); }
.success:focus { outline: 3px solid var(--redline); outline-offset: 3px; }
.success-icon { width: 2.25rem; height: 2.25rem; fill: none; stroke: var(--ink); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.success h3 { font: 700 1.25rem/1.25 var(--font-display); font-stretch: 112%; }
.success p { color: var(--ink-2); }

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

.faq-layout { display: grid; gap: 1rem; }
@media (min-width: 56rem) { .faq-layout { grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 4rem; } }
.faq-layout .section-head { margin-bottom: 1rem; }
.faq-col .btn { margin-top: 2rem; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  padding: 1.15rem 0;
  font: 700 1.0625rem/1.35 var(--font-display); font-stretch: 108%;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; flex: none;
  width: 1.6rem; height: 1.6rem; border-radius: 50%;
  border: 1px solid var(--ink);
  background:
    linear-gradient(var(--ink), var(--ink)) center / .65rem 1.5px no-repeat,
    linear-gradient(var(--ink), var(--ink)) center / 1.5px .65rem no-repeat;
  transition: transform .2s;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq summary:hover { color: var(--ink-2); }
.faq details p { margin: 0 0 1.25rem; color: var(--ink-2); max-width: 62ch; }

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

.site-footer { background: var(--ink); color: var(--on-ink-2); padding-block: clamp(3rem, 6vw, 4.5rem) 2rem; font-size: .9375rem; }
.site-footer a, .site-footer .link-button { color: var(--on-ink); }
.footer-top { display: grid; gap: 2.5rem; }
@media (min-width: 64rem) { .footer-top { grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: 4rem; } }
.footer-name { font: 800 1.375rem/1.1 var(--font-display); font-stretch: 118%; color: var(--on-ink); margin-bottom: .85rem; }
.footer-brand p + p { margin-top: .85rem; }
.footer-brand p { max-width: 34rem; }
.footer-links { display: grid; gap: 2rem; }
@media (min-width: 40rem) { .footer-links { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.footer-heading { font: 500 .6875rem/1.3 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--on-ink-2); margin-bottom: .9rem; }
.footer-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .55rem; }
.footer-list a { text-decoration: none; }
.footer-list a:hover { text-decoration: underline; }
.footer-bottom {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: .75rem 2rem;
  margin-top: 3rem; padding-top: 1.5rem;
  border-top: 1px solid var(--ink-line);
  font-size: .875rem;
}
.footer-legal { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; }

/* ---- Cookie banner (both choices styled identically on purpose) ------ */

.cookie-banner {
  position: fixed; z-index: 50;
  left: max(1rem, env(safe-area-inset-left, 0px));
  right: max(1rem, env(safe-area-inset-right, 0px));
  bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
  display: grid; gap: .9rem;
  padding: 1.1rem 1.1rem 1.2rem;
  background: var(--sheet); color: var(--ink);
  border: 1px solid var(--ink);
  box-shadow: 6px 6px 0 rgba(27, 37, 89, .2);
  font-size: .875rem; line-height: 1.5;
}
@media (min-width: 48rem) { .cookie-banner { right: auto; max-width: 26rem; } }
.cookie-actions { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; }
.btn-cookie { background: var(--ink); color: var(--on-ink); min-height: 2.75rem; padding: .7rem 1rem; font-size: .9375rem; }
.btn-cookie:hover { background: #2A3670; }

/* ---- Guide and inner pages ------------------------------------------ */

.page-band { padding-block: clamp(1rem, 3vw, 2rem) clamp(2rem, 4vw, 3rem); }
.page-head { padding: clamp(1.5rem, 4vw, 3rem) clamp(1rem, 3vw, 3rem) clamp(1.75rem, 4vw, 3rem); }
.page-head .kicker { margin-bottom: .25rem; }
.page-head-split { display: grid; gap: 2rem; align-items: center; }
.page-figure { display: none; }
@media (min-width: 64rem) {
  .page-head-split { grid-template-columns: minmax(0, 1fr) auto; gap: 3rem; }
  .page-figure { display: grid; justify-items: center; gap: .9rem; margin-right: 1rem; }
}
.detail-callout {
  position: relative; width: 11rem; height: 11rem; border-radius: 50%;
  display: grid; place-items: center;
  border: 1.5px solid var(--ink); background: var(--sheet);
}
.detail-callout::before, .detail-callout::after { content: ""; position: absolute; background: var(--line-strong); }
.detail-callout::before { left: -1.75rem; right: -1.75rem; top: 50%; height: 1px; }
.detail-callout::after { top: -1.75rem; bottom: -1.75rem; left: 50%; width: 1px; }
.detail-icon { position: relative; z-index: 1; width: 6rem; height: 6rem; padding: .6rem; background: var(--sheet); fill: none; stroke: var(--ink); stroke-width: 1.1; stroke-linecap: round; stroke-linejoin: round; }
.detail-label { font: 500 .6875rem/1.3 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); }
.page-head h1 {
  font: 800 clamp(2rem, 1.25rem + 3vw, 3.75rem)/1.02 var(--font-display);
  font-stretch: 120%; letter-spacing: -.015em;
  margin: .75rem 0 1.1rem; max-width: 22ch; text-wrap: balance;
}
@media (max-width: 26rem) { .page-head h1 { font-stretch: 106%; } }
.page-lede { font-size: clamp(1.0625rem, 1rem + .4vw, 1.25rem); color: var(--ink-2); max-width: 46rem; }
.page-head .page-lede + p { margin-top: 1.5rem; }
.page-meta { margin-top: 1rem; font: 500 .75rem/1.4 var(--font-mono); color: var(--ink-3); }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: .25rem .5rem; margin: 0 0 1.5rem; padding: 0; font: 500 .75rem/1.5 var(--font-mono); color: var(--ink-3); }
.breadcrumb li + li::before { content: "/"; margin-right: .5rem; color: var(--line-strong); }
.breadcrumb a { color: var(--ink-2); }

.guide-body { display: grid; gap: 2rem; padding-block: clamp(2rem, 5vw, 3.5rem) clamp(3rem, 6vw, 5rem); }
@media (min-width: 64rem) { .guide-body { grid-template-columns: 15rem minmax(0, 46rem); gap: 4.5rem; } }
.guide-main { min-width: 0; }
.toc { border: 1px solid var(--line); background: var(--sheet); padding: 1rem 1.25rem; align-self: start; }
@media (min-width: 64rem) { .toc { position: sticky; top: 1.5rem; border: 0; background: none; padding: 0; } }
.toc-title { font: 500 .6875rem/1.3 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin-bottom: .75rem; }
.toc ol { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line); }
.toc a { display: block; margin-left: -1px; padding: .4rem 0 .4rem 1rem; border-left: 2px solid transparent; color: var(--ink-2); text-decoration: none; font-size: .875rem; line-height: 1.35; }
.toc a:hover { color: var(--ink); border-left-color: var(--redline); }

.article, .prose { font-size: 1.0625rem; line-height: 1.7; }
.article > *, .prose > * { margin: 0 0 1.15rem; }
.prose { padding-block: clamp(2rem, 5vw, 3.5rem) clamp(3rem, 6vw, 5rem); }
.prose > * { max-width: 46rem; }
.article h2, .prose h2 {
  font: 800 clamp(1.5rem, 1.2rem + 1vw, 1.875rem)/1.15 var(--font-display);
  font-stretch: 115%; letter-spacing: -.01em;
  margin: 3rem 0 1rem; padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  scroll-margin-top: 1.5rem; text-wrap: balance;
}
.article > h2:first-child, .prose > h2:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.article h3 { font: 700 1.1875rem/1.3 var(--font-display); font-stretch: 108%; margin: 2rem 0 .6rem; }
.article ul, .article ol, .prose ul, .prose ol { padding-left: 1.25rem; }
.article li, .prose li { margin-bottom: .5rem; }
.article li::marker, .prose li::marker { color: var(--ink-3); }
.article a, .prose a { text-decoration-color: var(--redline); text-decoration-thickness: 1.5px; text-underline-offset: .2em; }
.article a:hover, .prose a:hover { color: var(--redline-deep); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); background: var(--sheet); }
.article table, .prose table { border-collapse: collapse; width: 100%; font-size: .9375rem; line-height: 1.5; background: var(--sheet); }
.prose > table { border: 1px solid var(--line); }
.article th, .article td, .prose th, .prose td { padding: .7rem .85rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
.article th, .prose th { font: 500 .6875rem/1.35 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-2); background: var(--wash); }
.article tr:last-child td, .prose tr:last-child td { border-bottom: 0; }
.article td:first-child { font-weight: 600; }
.note { position: relative; margin-top: 1.75rem; padding: 1.5rem 1.25rem 1.1rem; border: 1px solid var(--ink); background: var(--sheet); font-size: 1rem; }
.note::before {
  content: "Note"; position: absolute; top: -.65rem; left: 1rem;
  padding: .2rem .45rem; background: var(--paper);
  border: 1px solid var(--ink);
  font: 600 .625rem/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase;
}
.sources { margin-top: 2.5rem !important; padding-top: 1.25rem; border-top: 1px solid var(--line); font-size: .875rem; color: var(--ink-3); }
.article .faq { margin-top: .5rem; }

.cta-box {
  display: grid; gap: 1rem; justify-items: start;
  margin-top: 3.5rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background-color: var(--ink);
  background-image: linear-gradient(var(--ink-line) 1px, transparent 1px), linear-gradient(90deg, var(--ink-line) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--on-ink);
}
.cta-box h2 { font: 800 clamp(1.5rem, 1.2rem + 1.2vw, 2.125rem)/1.1 var(--font-display); font-stretch: 118%; }
.cta-box > p:not(.disclosure):not(.kicker) { color: var(--on-ink-2); max-width: 60ch; }
.cta-box .btn-red { box-shadow: 4px 4px 0 rgba(238, 241, 245, .3); margin-top: .5rem; }
.related { margin-top: 3.5rem; }
.related h2 { font: 800 1.5rem/1.2 var(--font-display); font-stretch: 115%; margin-bottom: 1.25rem; }
.cards-related { margin: 0; }

/* ---- Motion: one orchestrated moment on the hero --------------------- */

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
  .fly { animation: sheet-in .75s cubic-bezier(.2, .75, .2, 1) both; }
  .fly-1 { animation-delay: .05s; }
  .fly-2 { animation-delay: .2s; }
  .fly-3 { animation-delay: .35s; }
  .fly-4 { animation-delay: .5s; }
  .art-cloud { stroke-dasharray: 1; stroke-dashoffset: 1; animation: draw 1.1s .95s ease-out forwards; }
  .art-markup { animation: fade-in .5s 1.8s both; }
  .redline { animation: underline .8s .45s cubic-bezier(.3, .7, .2, 1) both; }
}
@keyframes sheet-in { from { opacity: 0; transform: translateY(26px); } }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes fade-in { from { opacity: 0; } }
@keyframes underline { from { background-size: 0% .3em; } }
@media (prefers-reduced-motion: reduce) {
  .btn, .card, .feature-card, .link-arrow, .faq summary::after { transition: none; }
}