/* The Carat Source: site styles
   Palette and type follow the brand kit (24 Oct 2026): strictly monochrome, Arial supporting type.
   Colour appears only inside photographs. */

:root {
  --ink: #171717;
  --white: #ffffff;
  --paper: #f7f7f7;
  --silver: #e5e5e5;
  --grey: #666666;
  --mist: #a8a8a8;
  --ink-10: rgba(23, 23, 23, 0.10);
  --white-20: rgba(255, 255, 255, 0.20);
  --white-60: rgba(255, 255, 255, 0.60);

  --font: Arial, "Helvetica Neue", Helvetica, sans-serif;

  --fs-0: 0.75rem;     /* 12 labels */
  --fs-1: 0.875rem;    /* 14 small, nav, buttons */
  --fs-2: 1.0625rem;   /* 17 body */
  --fs-3: 1.375rem;    /* 22 lead */
  --fs-4: 1.75rem;     /* 28 h3 */
  --fs-5: clamp(1.875rem, 1.4rem + 1.6vw, 2.75rem);  /* h2 */
  --fs-6: clamp(2.375rem, 1.4rem + 3.4vw, 4.375rem);   /* display */

  --track-label: 0.12em;
  --lh-body: 1.6;

  --gutter: clamp(1.25rem, 4vw, 3.5rem);
  --wrap: 1280px;
  --sec: clamp(4rem, 9vw, 7.5rem);
  --sec-tight: clamp(3rem, 6vw, 5rem);

  --focus: 2px solid var(--ink);
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font);
  font-size: var(--fs-2);
  line-height: var(--lh-body);
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
figure { margin: 0; }
a { color: inherit; text-decoration: none; }
p a, li a, .link { text-decoration: underline; text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
p a:hover, li a:hover, .link:hover { text-decoration-thickness: 2px; }

:focus-visible { outline: var(--focus); outline-offset: 3px; }
.on-ink :focus-visible, .on-ink:focus-visible { outline-color: var(--white); }

h1, h2, h3, h4 { margin: 0; font-weight: 400; line-height: 1.1; letter-spacing: -0.015em; }
h1 { font-size: var(--fs-6); line-height: 1.02; letter-spacing: -0.025em; }
h2 { font-size: var(--fs-5); }
h3 { font-size: var(--fs-4); letter-spacing: -0.01em; }
h4 { font-size: var(--fs-3); letter-spacing: 0; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }
ul, ol { margin: 0; padding: 0; }
.plain { list-style: none; }

.lead { font-size: var(--fs-3); line-height: 1.45; letter-spacing: -0.005em; }
.muted { color: var(--grey); }
.small { font-size: var(--fs-1); }
.measure { max-width: 62ch; }
.measure-narrow { max-width: 44ch; }
.measure-wide { max-width: 72ch; }

.label {
  font-size: var(--fs-0);
  font-weight: 700;
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  line-height: 1.4;
}
.label-quiet { font-weight: 400; color: var(--grey); }

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

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

/* Skip link */
.skip { position: absolute; left: var(--gutter); top: -3rem; background: var(--ink); color: var(--white); padding: 0.6rem 1rem; z-index: 100; }
.skip:focus { top: 0.75rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--white);
  border-bottom: 1px solid var(--silver);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 72px; gap: 2rem; }
.brand { display: inline-flex; align-items: center; padding-block: 0.5rem; }
.brand img { height: 30px; width: auto; }
.nav { display: flex; align-items: center; gap: clamp(1.25rem, 2.4vw, 2.25rem); }
.nav a { font-size: var(--fs-1); padding-block: 0.25rem; border-bottom: 1px solid transparent; }
.nav a:hover { border-bottom-color: var(--ink); }
.nav a[aria-current="page"] { border-bottom-color: var(--ink); }
.nav .btn { margin-left: 0.5rem; }
.nav-toggle {
  display: none; appearance: none; background: none; border: 0; padding: 0.75rem; margin-right: -0.75rem;
  cursor: pointer; color: var(--ink);
}
.nav-toggle span { display: block; width: 24px; height: 1px; background: currentColor; margin: 7px 0; transition: transform 0.25s ease, opacity 0.25s ease; }
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav {
    position: fixed; inset: 72px 0 0 0; background: var(--white);
    flex-direction: column; align-items: flex-start; justify-content: flex-start;
    padding: 2rem var(--gutter); gap: 0; display: none;
    border-top: 1px solid var(--silver);
  }
  .nav.is-open { display: flex; }
  .nav a { font-size: var(--fs-4); font-weight: 400; letter-spacing: -0.01em; padding: 0.9rem 0; border-bottom: 1px solid var(--silver); width: 100%; }
  .nav a[aria-current="page"] { border-bottom-color: var(--silver); color: var(--grey); }
  .nav .btn { margin: 1.5rem 0 0; width: auto; padding: 0.95rem 1.4rem; border-bottom: 1px solid var(--ink); font-size: var(--fs-1); }
  body.nav-locked { overflow: hidden; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem;
  font: inherit; font-size: var(--fs-1); line-height: 1; letter-spacing: 0.01em;
  padding: 0.95rem 1.4rem; min-height: 46px;
  border: 1px solid var(--ink); background: var(--white); color: var(--ink);
  cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.btn:hover { background: var(--ink); color: var(--white); }
.btn-solid { background: var(--ink); color: var(--white); }
.btn-solid:hover { background: var(--white); color: var(--ink); }
.on-ink .btn, .btn-on-ink { border-color: var(--white); background: transparent; color: var(--white); }
.on-ink .btn:hover, .btn-on-ink:hover { background: var(--white); color: var(--ink); }
.on-ink .btn-solid, .btn-solid-on-ink { background: var(--white); color: var(--ink); border-color: var(--white); }
.on-ink .btn-solid:hover, .btn-solid-on-ink:hover { background: transparent; color: var(--white); }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.45; cursor: not-allowed; }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* ---------- Sections ---------- */
.section { padding-block: var(--sec); }
.section-tight { padding-block: var(--sec-tight); }
.on-ink { background: var(--ink); color: var(--white); }
.on-ink .muted { color: var(--white-60); }
.on-paper { background: var(--paper); }

.sec-head {
  display: flex; justify-content: space-between; align-items: baseline; gap: 1rem;
  padding-top: 1.1rem; border-top: 1px solid var(--silver); margin-bottom: clamp(2rem, 4vw, 3.5rem);
}
.on-ink .sec-head { border-top-color: var(--white-20); }
.sec-head .label-quiet { text-align: right; }
.on-ink .label-quiet { color: var(--white-60); }

.sec-title { max-width: 24ch; margin-bottom: 1.25rem; }
.sec-intro { max-width: 58ch; color: var(--grey); }
.on-ink .sec-intro { color: var(--white-60); }

/* Two-column editorial: title left, copy right */
.split { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(2rem, 5vw, 6rem); align-items: start; }
.split-even { grid-template-columns: 1fr 1fr; }
@media (max-width: 820px) { .split, .split-even { grid-template-columns: 1fr; gap: 2rem; } }

/* Column lists (the kit's four-pillar layout) */
.cols { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(1.25rem, 3vw, 2.5rem); }
.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.col { padding-top: 1.1rem; border-top: 1px solid var(--silver); }
.on-ink .col { border-top-color: var(--white-20); }
.col h3, .col h4 { margin: 0.6rem 0 0.75rem; }
.col p { color: var(--grey); font-size: var(--fs-1); line-height: 1.6; }
.on-ink .col p { color: var(--white-60); }
@media (max-width: 1000px) { .cols { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .cols, .cols-3, .cols-2 { grid-template-columns: 1fr; } }

/* Definition rows (the kit's quality-control table) */
.rows { border-top: 1px solid var(--silver); }
.row { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); gap: 1.5rem; padding: 1.35rem 0; border-bottom: 1px solid var(--silver); }
.row dt { color: var(--grey); font-size: var(--fs-1); padding-top: 0.15rem; }
.row dd { margin: 0; }
.row dd p { margin-bottom: 0.5em; }
.on-ink .rows, .on-ink .row { border-color: var(--white-20); }
.on-ink .row dt { color: var(--white-60); }
@media (max-width: 640px) {
  .row { grid-template-columns: 1fr; gap: 0.35rem; }
  .sec-head { flex-direction: column; align-items: flex-start; gap: 0.4rem; }
  .sec-head .label-quiet { text-align: left; }
}

/* ---------- Photo placeholders ---------- */
.ph {
  position: relative; margin: 0; background: var(--silver); overflow: hidden;
  aspect-ratio: var(--ratio, 4 / 5);
}
.ph.ph-dark { background: #2a2a2a; }
.ph img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.ph .ph-tag {
  position: absolute; left: 1.25rem; bottom: 1.1rem; right: 1.25rem;
  display: grid; gap: 0.2rem;
  font-size: var(--fs-0); color: var(--grey); letter-spacing: 0.02em; line-height: 1.4;
}
.ph.ph-dark .ph-tag { color: var(--white-60); }
.ph .ph-tag b { font-weight: 700; letter-spacing: var(--track-label); text-transform: uppercase; white-space: nowrap; }
.ph .ph-tag span { text-align: left; max-width: 32ch; }
.ph.has-img .ph-tag { display: none; }
.ph::before {
  /* frame mark: a thin inner line, dropped once a photo loads */
  content: ""; position: absolute; inset: 0.75rem; border: 1px solid var(--ink-10); pointer-events: none;
}
.ph.ph-dark::before { border-color: var(--white-20); }
.ph.has-img::before { display: none; }
.fig-cap { margin-top: 0.75rem; font-size: var(--fs-1); color: var(--grey); line-height: 1.5; }
.fig-cap b { font-weight: 400; color: var(--ink); display: block; }

/* ---------- Hero ---------- */
.hero { padding-block: clamp(3.5rem, 8vw, 7rem) clamp(3.5rem, 8vw, 6.5rem); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(2.5rem, 6vw, 6rem); align-items: center; }
.hero h1 { max-width: 16ch; }
.hero .lead { margin-top: 1.75rem; max-width: 40ch; color: var(--white-60); }
.hero .btn-row { margin-top: 2.5rem; }
.hero-note { margin-top: 2.5rem; font-size: var(--fs-1); color: var(--white-60); max-width: 44ch; }
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero h1 { max-width: 14ch; }
}

/* ---------- The brief sheet ---------- */
.sheet {
  background: var(--white); color: var(--ink);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.6);
  font-size: var(--fs-1);
  width: 100%;
}
.sheet-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding-bottom: 1.1rem; border-bottom: 1px solid var(--silver); }
.sheet-head img { width: clamp(140px, 45%, 200px); height: auto; }
.sheet-ref { font-size: var(--fs-0); color: var(--grey); letter-spacing: 0.04em; white-space: nowrap; }
.sheet-title { margin: 1.4rem 0 1.1rem; font-size: var(--fs-3); letter-spacing: -0.01em; line-height: 1.2; }
.sheet dl { margin: 0; }
.sheet .sheet-row { display: grid; grid-template-columns: 7.5rem minmax(0, 1fr); gap: 1rem; padding: 0.7rem 0; border-top: 1px solid var(--silver); }
.sheet .sheet-row dt { color: var(--grey); }
.sheet .sheet-row dd { margin: 0; min-height: 1.4em; }
.sheet .sheet-row dd:empty::after { content: "\00a0"; }
.sheet-foot { margin-top: 1.1rem; padding-top: 1rem; border-top: 1px solid var(--ink); display: flex; justify-content: space-between; gap: 1rem; align-items: baseline; }
.sheet-foot .status { font-weight: 700; }
.sheet .caret { display: inline-block; width: 1px; height: 1em; background: var(--ink); vertical-align: -0.15em; margin-left: 1px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .sheet .caret { display: none; } }
@media (max-width: 480px) { .sheet .sheet-row { grid-template-columns: 1fr; gap: 0.15rem; } }

/* ---------- Production journey ---------- */
.journey { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--silver); }
.journey-step { padding: 1.1rem 1rem 1.25rem 0; border-right: 1px solid var(--silver); }
.journey-step:last-child { border-right: 0; }
.journey-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.journey-step .num { font-size: var(--fs-0); color: var(--grey); letter-spacing: 0.04em; }
.journey-step h4 { font-size: var(--fs-2); margin: 0.9rem 0 0.35rem; }
.journey-step p { font-size: var(--fs-1); color: var(--grey); line-height: 1.5; }
.journey-step + .journey-step { padding-left: 1rem; }
@media (max-width: 1000px) {
  .journey { grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 0; }
  .journey-step { border-top: 1px solid var(--silver); }
  .journey-step:nth-child(4n) { border-right: 0; }
  .journey-step:nth-child(4n+1) { padding-left: 0; }
}
@media (max-width: 600px) {
  .journey { grid-template-columns: 1fr; }
  .journey-step { border-right: 0; padding-left: 0 !important; display: grid; grid-template-columns: 3rem 1fr; column-gap: 1rem; }
  .journey-step .num { grid-row: 1 / span 2; }
  .journey-step h4 { margin-top: 0; }
}

/* Interactive journey (production page) */
.journey-x { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(2rem, 5vw, 5rem); }
.stage-list { list-style: none; border-top: 1px solid var(--silver); }
.stage-list button {
  width: 100%; text-align: left; font: inherit; color: inherit; background: none; border: 0; border-bottom: 1px solid var(--silver);
  padding: 1rem 0; cursor: pointer; display: grid; grid-template-columns: 2.5rem 1fr auto; gap: 0.75rem; align-items: baseline;
}
.stage-list button .num { font-size: var(--fs-0); color: var(--grey); }
.stage-list button .dur { font-size: var(--fs-0); color: var(--grey); white-space: nowrap; }
.stage-list button[aria-selected="true"] { font-weight: 700; }
.stage-list button[aria-selected="true"] .num { color: var(--ink); }
.stage-panel { border-top: 1px solid var(--silver); padding-top: 1.1rem; }
.stage-panel h3 { margin: 0.4rem 0 1rem; }
.stage-panel .rows .row dt { padding-top: 0; }
.stage-panel .ph { margin-top: 2rem; }
@media (max-width: 820px) { .journey-x { grid-template-columns: 1fr; } }

/* Tracker preview (mock of the coming client portal) */
.tracker {
  background: var(--white); color: var(--ink); border: 1px solid var(--silver);
  padding: clamp(1.25rem, 3vw, 2rem); font-size: var(--fs-1);
}
.on-ink .tracker { border: 0; box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.6); }
.tracker-head { display: flex; justify-content: space-between; gap: 1rem; align-items: baseline; padding-bottom: 1rem; border-bottom: 1px solid var(--silver); }
.tracker-head h4 { font-size: var(--fs-2); }
.tracker-meta { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--silver); }
.tracker-meta div span { display: block; color: var(--grey); font-size: var(--fs-0); margin-bottom: 0.2rem; }
.tracker-line { list-style: none; margin-top: 1.25rem; display: grid; grid-template-columns: repeat(7, 1fr); gap: 0.35rem; }
.tracker-line li { position: relative; padding-top: 0.9rem; font-size: var(--fs-0); color: var(--grey); line-height: 1.3; }
.tracker-line li::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--silver); }
.tracker-line li.done::before { background: var(--ink); }
.tracker-line li.done { color: var(--ink); }
.tracker-line li.now { color: var(--ink); font-weight: 700; }
.tracker-line li.now::before { background: var(--ink); }
.tracker-line li.now::after { content: ""; position: absolute; top: -3px; right: 0; width: 8px; height: 8px; background: var(--ink); }
.tracker-note { margin-top: 1.25rem; padding-top: 1rem; border-top: 1px solid var(--silver); color: var(--grey); font-size: var(--fs-0); }
@media (max-width: 640px) {
  .tracker-line { grid-template-columns: repeat(4, 1fr); row-gap: 1rem; }
  .tracker-meta { grid-template-columns: 1fr 1fr; }
}

/* ---------- Market cards ---------- */
.markets { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1.25rem, 3vw, 2.5rem); }
.market { border-top: 1px solid var(--silver); padding-top: 1.1rem; display: flex; flex-direction: column; }
.on-ink .market { border-top-color: var(--white-20); }
.market h3 { margin: 0.5rem 0 1.25rem; }
.market ul { list-style: none; flex: 1; }
.market li { padding: 0.65rem 0; border-top: 1px solid var(--silver); font-size: var(--fs-1); color: var(--grey); display: grid; grid-template-columns: 6.5rem 1fr; gap: 1rem; }
.on-ink .market li { border-top-color: var(--white-20); color: var(--white-60); }
.market li span { color: var(--ink); }
.on-ink .market li span { color: var(--white); }
.market .btn { align-self: flex-start; margin-top: 1.5rem; }
@media (max-width: 900px) { .markets { grid-template-columns: 1fr; } }

/* ---------- Product grid ---------- */
.products { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(1rem, 2.5vw, 2rem); }
@media (max-width: 1000px) { .products { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* ---------- Statement block ---------- */
.statement { font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.5rem); line-height: 1.2; letter-spacing: -0.015em; max-width: 28ch; }

/* ---------- Page intro (inner pages) ---------- */
.page-intro { padding-block: clamp(3rem, 7vw, 6rem) clamp(2.5rem, 5vw, 4rem); }
.page-intro h1 { max-width: 16ch; font-size: clamp(2.25rem, 1.4rem + 3vw, 4rem); }
.page-intro .lead { margin-top: 1.5rem; max-width: 52ch; color: var(--grey); }
.on-ink.page-intro .lead { color: var(--white-60); }
.crumbs { font-size: var(--fs-0); color: var(--grey); margin-bottom: 2.5rem; display: flex; gap: 0.6rem; flex-wrap: wrap; }
.crumbs a:hover { color: var(--ink); }
.on-ink .crumbs { color: var(--white-60); }
.on-ink .crumbs a:hover { color: var(--white); }

/* ---------- Article ---------- */
.article { max-width: 68ch; }
.article h1 { font-size: clamp(2rem, 1.3rem + 2.6vw, 3.5rem); max-width: 18ch; }
.article .meta { color: var(--grey); font-size: var(--fs-1); margin: 1.5rem 0 3rem; display: flex; gap: 1.5rem; flex-wrap: wrap; }
.article h2 { font-size: var(--fs-4); margin: 2.5rem 0 1rem; }
.article p { margin-bottom: 1.25em; }
.article ul, .article ol { margin: 0 0 1.25em 1.2em; }
.article li { margin-bottom: 0.4em; }
.article blockquote { margin: 2rem 0; padding-left: 1.5rem; border-left: 1px solid var(--ink); font-size: var(--fs-3); line-height: 1.4; }
.article-list { list-style: none; border-top: 1px solid var(--silver); }
.article-list li { border-bottom: 1px solid var(--silver); }
.article-list a { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); gap: 1.5rem; padding: 1.75rem 0; text-decoration: none; }
.article-list a:hover h3 { text-decoration: underline; text-underline-offset: 0.15em; text-decoration-thickness: 1px; }
.article-list .when { color: var(--grey); font-size: var(--fs-1); padding-top: 0.3rem; }
.article-list p { color: var(--grey); margin-top: 0.75rem; max-width: 60ch; }
@media (max-width: 640px) { .article-list a { grid-template-columns: 1fr; gap: 0.5rem; } }

/* ---------- Forms ---------- */
.field { display: grid; gap: 0.5rem; }
.field label, .field .q { font-size: var(--fs-1); }
.field .hint { font-size: var(--fs-0); color: var(--grey); }
input[type="text"], input[type="email"], input[type="tel"], input[type="url"], input[type="number"], input[type="date"], select, textarea {
  font: inherit; font-size: var(--fs-2); color: var(--ink); background: var(--white);
  border: 0; border-bottom: 1px solid var(--ink); border-radius: 0; padding: 0.7rem 0; width: 100%;
}
textarea { min-height: 7rem; resize: vertical; line-height: 1.5; }
input::placeholder, textarea::placeholder { color: var(--mist); }
input:focus, select:focus, textarea:focus { outline: none; border-bottom-width: 2px; }
select { appearance: none; -webkit-appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--ink) 50%), linear-gradient(135deg, var(--ink) 50%, transparent 50%); background-position: calc(100% - 12px) 55%, calc(100% - 7px) 55%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 1.5rem; }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem 2rem; }
@media (max-width: 640px) { .field-grid { grid-template-columns: 1fr; } }

/* Chips: multiple-choice options rendered as toggles */
.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chip { position: relative; }
.chip input { position: absolute; opacity: 0; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.chip span {
  display: inline-block; padding: 0.6rem 0.95rem; border: 1px solid var(--silver); font-size: var(--fs-1); line-height: 1;
  transition: border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}
.chip input:hover + span { border-color: var(--ink); }
.chip input:checked + span { background: var(--ink); color: var(--white); border-color: var(--ink); }
.chip input:focus-visible + span { outline: var(--focus); outline-offset: 2px; }

/* Brief builder layout */
.brief-layout { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.brief-steps { display: grid; gap: clamp(2.5rem, 5vw, 4rem); }
.brief-step { border-top: 1px solid var(--silver); padding-top: 1.1rem; }
.brief-step .step-no { font-size: var(--fs-0); color: var(--grey); }
.brief-step h2 { font-size: var(--fs-4); margin: 0.5rem 0 1.5rem; }
.brief-step .fields { display: grid; gap: 1.75rem; }
.brief-step[hidden] { display: none; }
.brief-aside { position: sticky; top: 96px; }
.brief-aside .sheet { border: 1px solid var(--silver); box-shadow: none; }
.brief-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; margin-top: 2rem; }
.form-msg { font-size: var(--fs-1); color: var(--grey); margin-top: 1rem; }
.form-msg.error { color: var(--ink); font-weight: 700; }
.confirm { border: 1px solid var(--ink); padding: clamp(1.5rem, 3vw, 2.5rem); }
.confirm h2 { font-size: var(--fs-4); margin-bottom: 1rem; }
.confirm .btn-row { margin-top: 1.5rem; }
.track-pick { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.75rem; }
.track-pick .chip span { display: block; padding: 1.25rem 1.1rem; line-height: 1.4; }
.track-pick .chip span b { display: block; font-weight: 400; font-size: var(--fs-2); margin-bottom: 0.3rem; }
.track-pick .chip small { display: block; font-size: var(--fs-0); opacity: 0.75; }
@media (max-width: 960px) { .brief-layout { grid-template-columns: 1fr; } .brief-aside { position: static; } }
@media (max-width: 640px) { .track-pick { grid-template-columns: 1fr; } }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1.25rem, 3vw, 2.5rem); }
.contact-card { border-top: 1px solid var(--silver); padding-top: 1.1rem; display: flex; flex-direction: column; min-height: 100%; }
.contact-card h3 { margin: 0.5rem 0 0.75rem; font-size: var(--fs-3); }
.contact-card p { color: var(--grey); font-size: var(--fs-1); flex: 1; }
.contact-card .btn { align-self: flex-start; margin-top: 1.25rem; }
@media (max-width: 820px) { .contact-grid { grid-template-columns: 1fr; } }

/* ---------- CTA band ---------- */
.cta-band .wrap { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 2rem; align-items: end; }
.cta-band h2 { max-width: 16ch; font-size: var(--fs-6); letter-spacing: -0.025em; line-height: 1.02; }
.cta-band .btn-row { justify-content: flex-start; }
.cta-band p { color: var(--white-60); margin-bottom: 1.75rem; max-width: 40ch; }
@media (max-width: 820px) { .cta-band .wrap { grid-template-columns: 1fr; } }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: var(--white); padding-block: clamp(3rem, 6vw, 5rem) 2rem; }
.foot-grid { display: grid; grid-template-columns: minmax(0, 4fr) repeat(3, minmax(0, 2fr)); gap: clamp(1.5rem, 4vw, 3rem); padding-bottom: 3rem; border-bottom: 1px solid var(--white-20); }
.foot-brand img { height: 72px; width: auto; }
.foot-brand p { margin-top: 1.5rem; color: var(--white-60); font-size: var(--fs-1); max-width: 30ch; }
.foot-col .label { color: var(--white-60); margin-bottom: 1rem; }
.foot-col ul { list-style: none; }
.foot-col li { margin-bottom: 0.55rem; font-size: var(--fs-1); }
.foot-col li a { text-decoration: none; }
.foot-col a:hover { text-decoration: underline; text-underline-offset: 0.18em; }
.foot-meta { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; padding-top: 1.5rem; font-size: var(--fs-0); color: var(--white-60); }
.foot-meta a:hover { color: var(--white); }
@media (max-width: 900px) { .foot-grid { grid-template-columns: 1fr 1fr; } .foot-brand { grid-column: 1 / -1; } }
@media (max-width: 480px) { .foot-grid { grid-template-columns: 1fr; } }

/* ---------- Utilities ---------- */
.mt-1 { margin-top: 0.5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 1.5rem; } .mt-4 { margin-top: 2rem; } .mt-6 { margin-top: 3rem; } .mt-8 { margin-top: 4rem; }
.mb-2 { margin-bottom: 1rem; } .mb-3 { margin-bottom: 1.5rem; } .mb-4 { margin-bottom: 2rem; } .mb-6 { margin-bottom: 3rem; }
.hairline { border: 0; border-top: 1px solid var(--silver); margin: 0; }
.on-ink .hairline { border-top-color: var(--white-20); }
.note { font-size: var(--fs-1); color: var(--grey); }
.on-ink .note { color: var(--white-60); }
.stack > * + * { margin-top: 1.25rem; }

@media print {
  .site-header, .site-footer, .cta-band, .nav, .btn, .brief-steps { display: none !important; }
  .brief-layout { display: block; }
  .brief-aside .sheet { border: 0; }
}

/* ---------- Ask the desk ---------- */
.ask-fab {
  position: fixed; right: clamp(1rem, 3vw, 2rem); bottom: clamp(1rem, 3vw, 2rem); z-index: 60;
  font: inherit; font-size: var(--fs-1); letter-spacing: 0.01em; cursor: pointer;
  background: var(--ink); color: var(--white); border: 1px solid var(--ink); padding: 0.9rem 1.3rem;
  box-shadow: 0 20px 40px -20px rgba(0, 0, 0, 0.5);
}
.ask-fab:hover { background: var(--white); color: var(--ink); }
.ask-fab[aria-expanded="true"] { display: none; }
.ask-panel {
  position: fixed; right: clamp(1rem, 3vw, 2rem); bottom: clamp(1rem, 3vw, 2rem); z-index: 61;
  width: min(420px, calc(100vw - 2rem)); max-height: min(640px, calc(100vh - 2rem));
  display: flex; flex-direction: column; background: var(--white); color: var(--ink);
  border: 1px solid var(--ink); box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.6);
}
.ask-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; padding: 1.1rem 1.25rem 0.9rem; border-bottom: 1px solid var(--silver); }
.ask-sub { margin: 0.35rem 0 0; font-size: var(--fs-0); color: var(--grey); line-height: 1.5; }
.ask-close { font: inherit; font-size: var(--fs-0); letter-spacing: var(--track-label); text-transform: uppercase; background: none; border: 0; padding: 0.25rem 0; color: var(--grey); cursor: pointer; }
.ask-close:hover { color: var(--ink); }
.ask-log { flex: 1; overflow-y: auto; padding: 1rem 1.25rem; display: grid; gap: 0.75rem; align-content: start; min-height: 140px; font-size: var(--fs-1); line-height: 1.55; }
.ask-msg { max-width: 92%; padding: 0.7rem 0.9rem; }
.ask-user { justify-self: end; background: var(--ink); color: var(--white); }
.ask-assistant { justify-self: start; background: var(--paper); }
.ask-assistant a { text-decoration: underline; text-underline-offset: 0.15em; }
.ask-suggest { display: flex; flex-wrap: wrap; gap: 0.4rem; padding: 0 1.25rem 0.75rem; }
.ask-chip { font: inherit; font-size: var(--fs-0); background: var(--white); border: 1px solid var(--silver); padding: 0.45rem 0.7rem; cursor: pointer; color: var(--ink); text-align: left; }
.ask-chip:hover { border-color: var(--ink); }
.ask-form { display: grid; grid-template-columns: 1fr auto; gap: 0.5rem; padding: 0.75rem 1.25rem; border-top: 1px solid var(--silver); align-items: end; }
.ask-form textarea { min-height: 2.6rem; font-size: var(--fs-1); padding: 0.5rem 0; resize: none; }
.ask-form .btn { min-height: 40px; padding: 0.7rem 1rem; }
.ask-foot { margin: 0; padding: 0 1.25rem 0.9rem; font-size: var(--fs-0); color: var(--grey); line-height: 1.5; }
.ask-foot a { text-decoration: underline; text-underline-offset: 0.15em; }
.ask-dots { display: inline-flex; gap: 4px; align-items: center; height: 1.2em; }
.ask-dots i { width: 5px; height: 5px; background: var(--ink); display: block; animation: askdot 1s infinite ease-in-out; }
.ask-dots i:nth-child(2) { animation-delay: 0.15s; } .ask-dots i:nth-child(3) { animation-delay: 0.3s; }
@keyframes askdot { 0%, 80%, 100% { opacity: 0.25; } 40% { opacity: 1; } }
@media (prefers-reduced-motion: reduce) { .ask-dots i { animation: none; opacity: 0.6; } }
@media (max-width: 560px) {
  .ask-panel { right: 0; bottom: 0; left: 0; width: 100%; max-height: 88vh; border-left: 0; border-right: 0; border-bottom: 0; }
  body.ask-open { overflow: hidden; }
}

/* ---------- AI panels (brief interpreter, report reader) ---------- */
.ai-box { border: 1px solid var(--ink); padding: clamp(1.25rem, 3vw, 2rem); }
.ai-box .label { margin-bottom: 0.5rem; }
.ai-box h2 { font-size: var(--fs-4); margin: 0.25rem 0 0.75rem; }
.ai-box p.note { margin-bottom: 1rem; }
.ai-box textarea { min-height: 6.5rem; border: 1px solid var(--silver); padding: 0.8rem 0.9rem; }
.ai-box textarea:focus { border-color: var(--ink); }
.ai-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; margin-top: 1rem; }
.ai-result { margin-top: 1.25rem; padding-top: 1.1rem; border-top: 1px solid var(--silver); font-size: var(--fs-1); line-height: 1.55; }
.ai-result .summary { font-size: var(--fs-2); line-height: 1.45; }
.ai-result ul { margin: 0.6rem 0 0 1.1rem; }
.ai-result li { margin-bottom: 0.3rem; }
.ai-result .muted { color: var(--grey); }
.ai-busy { color: var(--grey); font-size: var(--fs-1); }

/* Report reader */
.drop { border: 1px dashed var(--ink); padding: clamp(1.5rem, 4vw, 2.5rem); text-align: center; cursor: pointer; background: var(--white); }
.drop:hover, .drop.is-over { background: var(--paper); }
.drop input { display: none; }
.drop p { margin: 0; }
.drop .hint { display: block; margin-top: 0.5rem; }
.report-preview { margin-top: 1rem; max-height: 220px; overflow: hidden; border: 1px solid var(--silver); }
.report-preview img { width: 100%; height: 220px; object-fit: contain; background: var(--paper); }
.report-out { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.report-out .sheet { border: 1px solid var(--silver); box-shadow: none; }
.report-out .sheet .sheet-row { grid-template-columns: 8.5rem minmax(0, 1fr); }
.report-notes h3 { margin: 0 0 1rem; }
.report-notes ul { margin: 0 0 1.5rem 1.1rem; }
.report-notes li { margin-bottom: 0.6rem; }
.report-notes .warn { border-left: 1px solid var(--ink); padding-left: 1rem; color: var(--grey); font-size: var(--fs-1); }
@media (max-width: 820px) { .report-out { grid-template-columns: 1fr; } }