/* Shared structure for the AHC World brand guidelines.
   Each brand sets the tokens below in its own style.css; nothing here names a brand colour. */

:root {
  --gutter: clamp(20px, 5vw, 80px);
  --measure: 62ch;
  --bg: #FFFFFF;
  --fg: #111111;
  --fg2: #555555;
  --line: rgba(0, 0, 0, .14);
  --surface: #F3F3F3;
  --accent: #111111;
  --invert-bg: #111111;
  --invert-fg: #FFFFFF;
  --display: system-ui, sans-serif;
  --display-weight: 700;
  --display-track: -.02em;
  --text: system-ui, sans-serif;
  --radius: 4px;
  --ok: #1E7F45;
  --no: #C62828;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { background: var(--bg); }
body { font-family: var(--text); color: var(--fg); background: var(--bg); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: inherit; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img, svg, canvas { display: block; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- top bar ---------- */
.top { position: fixed; z-index: 40; top: 0; left: 0; right: 0; height: 64px; padding: 0 var(--gutter); display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 20px; font-size: 14px; color: var(--top-fg, var(--fg)); transition: background .4s, color .4s, box-shadow .4s; }
.top.solid { background: var(--top-solid, rgba(255, 255, 255, .94)); color: var(--top-solid-fg, var(--fg)); backdrop-filter: blur(10px); box-shadow: 0 1px 0 var(--line); }
.top .mini { justify-self: start; opacity: 0; transition: opacity .4s; }
.top.solid .mini { opacity: 1; }
.top .mini img { height: 28px; width: auto; }
.top .now { font-weight: 600; opacity: 0; transition: opacity .3s; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 46vw; }
.top .now span { opacity: .55; font-weight: 400; margin-right: 8px; font-variant-numeric: tabular-nums; }
.top.solid .now.on { opacity: 1; }
.top .right { justify-self: end; display: flex; align-items: center; gap: 22px; }
.top .right a { text-decoration: none; font-weight: 700; }
.top .right a.kit { padding-bottom: 2px; border-bottom: 1px solid currentColor; }

/* ---------- chapter rail ---------- */
.rail { position: fixed; z-index: 35; right: 18px; top: 50%; transform: translateY(-50%); display: flex; flex-direction: column; gap: 4px; opacity: 0; pointer-events: none; transition: opacity .4s; }
.rail.on { opacity: 1; pointer-events: auto; }
.rail a { display: flex; align-items: center; justify-content: flex-end; gap: 10px; text-decoration: none; font-size: 12px; font-variant-numeric: tabular-nums; color: var(--rail-fg, var(--fg)); padding: 3px 0; }
.rail a i { width: 14px; height: 1px; background: currentColor; opacity: .35; transition: width .3s, opacity .3s; }
.rail a span { opacity: 0; transform: translateX(6px); transition: opacity .25s, transform .25s; white-space: nowrap; background: var(--bg); color: var(--fg); padding: 3px 8px; border-radius: 3px; box-shadow: 0 0 0 1px var(--line); }
.rail a b { font-weight: 400; opacity: .45; width: 18px; text-align: right; }
.rail:hover a span { opacity: 1; transform: none; }
.rail a[aria-current] i { width: 26px; opacity: 1; }
.rail a[aria-current] b { opacity: 1; font-weight: 700; }

/* ---------- cover & contents ---------- */
.cover-tag { position: absolute; left: var(--gutter); bottom: 34px; font-size: 14px; line-height: 1.5; opacity: .8; }
.cover-tag b { display: block; font-weight: 700; opacity: 1; }
.contents { padding: 18vh var(--gutter) 16vh; }
.contents h2 { font-family: var(--display); font-weight: var(--display-weight); letter-spacing: var(--display-track); font-size: clamp(40px, 5.6vw, 92px); line-height: 1; }
.contents .intro { margin-top: 20px; font-size: clamp(17px, 1.4vw, 20px); line-height: 1.55; color: var(--fg2); max-width: 46ch; }
.toc { margin-top: 9vh; list-style: none; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 5vw; }
.toc li { border-top: 1px solid var(--line); }
.toc a { display: grid; grid-template-columns: 64px 1fr; gap: 16px; padding: 20px 0 22px; text-decoration: none; }
.toc a b { font-family: var(--display); font-weight: var(--display-weight); font-size: 22px; font-variant-numeric: tabular-nums; }
.toc a strong { display: block; font-size: 20px; font-weight: 600; }
.toc a span { display: block; margin-top: 4px; font-size: 15px; color: var(--fg2); }
.toc a:hover strong { text-decoration: underline; text-underline-offset: 5px; text-decoration-thickness: 1px; }

/* ---------- chapters ---------- */
.ch { position: relative; padding: 0 var(--gutter) 14vh; }
.ch.dark { background: var(--invert-bg); color: var(--invert-fg); --fg: var(--invert-fg); --fg2: var(--invert-fg2, rgba(255,255,255,.7)); --line: var(--invert-line, rgba(255,255,255,.18)); --surface: var(--invert-surface, rgba(255,255,255,.06)); }
.ch-open { padding: 18vh 0 9vh; display: grid; grid-template-columns: minmax(0, auto) minmax(0, 1fr); gap: 4vw; align-items: end; }
.ch-open .num { font-family: var(--display); font-weight: var(--display-weight); font-size: clamp(96px, 15vw, 240px); line-height: .78; letter-spacing: var(--display-track); font-variant-numeric: tabular-nums; }
.ch-open h2 { font-family: var(--display); font-weight: var(--display-weight); letter-spacing: var(--display-track); font-size: clamp(34px, 4.4vw, 72px); line-height: 1; }
.ch-open p { margin-top: 14px; font-size: clamp(16px, 1.3vw, 19px); color: var(--fg2); }
.ch-open .motif { grid-column: 1 / -1; height: 1px; background: var(--accent); transform-origin: left center; transform: scaleX(0); transition: transform 1.4s cubic-bezier(.6, .05, .25, 1); }
.ch-open.in .motif { transform: scaleX(1); }

.block { margin-top: 12vh; }
.block:first-of-type { margin-top: 0; }
.block > h3, .bh { font-family: var(--display); font-weight: var(--display-weight); letter-spacing: var(--display-track); font-size: clamp(26px, 2.6vw, 40px); line-height: 1.05; }
.block > p.note, .note { margin-top: 12px; font-size: clamp(16px, 1.25vw, 18px); line-height: 1.6; color: var(--fg2); max-width: var(--measure); }
.lead { font-size: clamp(24px, 2.8vw, 44px); line-height: 1.22; letter-spacing: -.01em; max-width: 26ch; }
.cols { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 5vw; align-items: start; }
.cols-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.cols-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.stack > * + * { margin-top: 16px; }
.body { font-size: clamp(16px, 1.25vw, 18px); line-height: 1.65; color: var(--fg2); max-width: var(--measure); }
.body + .body { margin-top: 14px; }
.body strong { color: var(--fg); font-weight: 700; }

.facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; border-top: 1px solid var(--line); padding-top: 26px; }
.facts dt { font-family: var(--display); font-weight: var(--display-weight); font-size: clamp(44px, 4.6vw, 76px); line-height: 1; letter-spacing: var(--display-track); }
.facts dd { margin-top: 8px; font-size: 16px; color: var(--fg2); }

.points { list-style: none; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 5vw; }
.points li { padding: 18px 0; border-top: 1px solid var(--line); font-size: 16px; line-height: 1.55; color: var(--fg2); }
.points li b { display: block; color: var(--fg); font-size: 18px; margin-bottom: 4px; }

/* stages hold a logo on a background */
.stage { position: relative; border-radius: var(--radius); display: grid; place-items: center; overflow: hidden; background: var(--surface); }
.stage img, .stage svg { max-width: 76%; height: auto; }
.stage.tall { aspect-ratio: 16 / 9; }
.stage.card { aspect-ratio: 4 / 3; }
.label { margin-top: 14px; font-size: 16px; font-weight: 700; }
.sub { margin-top: 4px; font-size: 15px; line-height: 1.5; color: var(--fg2); }
.tag { display: inline-block; font-size: 13px; padding: 3px 8px; border-radius: 3px; background: var(--surface); color: var(--fg2); margin-top: 8px; }

/* anatomy callouts */
.anatomy { position: relative; }
.anatomy .stage { aspect-ratio: auto; padding: 9vh 6vw; }
.anatomy .stage svg, .anatomy .stage img { width: 100%; max-width: 980px; }
.parts { margin-top: 22px; list-style: none; display: grid; grid-template-columns: repeat(var(--n, 3), minmax(0, 1fr)); gap: 20px; }
.parts li { border-top: 2px solid var(--fg); padding-top: 14px; font-size: 15px; line-height: 1.5; color: var(--fg2); cursor: default; }
.parts li b { display: block; color: var(--fg); font-size: 17px; margin-bottom: 4px; }
.parts li.on { border-top-color: var(--accent); }
[data-part] { transition: opacity .3s; }
.dim [data-part] { opacity: .14; }
.dim [data-part].hot { opacity: 1; }

/* architecture diagram */
.arch { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 4vh; position: relative; }
.arch .root { grid-column: 1 / -1; justify-self: center; text-align: center; font-family: var(--display); font-weight: var(--display-weight); font-size: 22px; padding: 14px 26px; border: 1px solid var(--line); border-radius: var(--radius); }
.arch .root small { display: block; font-family: var(--text); font-weight: 400; font-size: 14px; color: var(--fg2); margin-top: 4px; }
.arch .node { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; gap: 14px; }
.arch .node .lg { height: 92px; display: grid; place-items: center; border-radius: 3px; }
.arch .node .lg img { max-height: 70%; max-width: 84%; }
.arch .node b { font-size: 17px; }
.arch .node span { font-size: 15px; line-height: 1.5; color: var(--fg2); }
.arch .node.self { border-color: var(--fg); box-shadow: 0 0 0 1px var(--fg); }
.arch-lines { grid-column: 1 / -1; height: 36px; position: relative; }
.arch-lines::before { content: ""; position: absolute; left: 16.66%; right: 16.66%; bottom: 0; height: 1px; background: var(--line); }
.arch-lines::after { content: ""; position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; background: var(--line); }

/* construction */
.measure { position: relative; padding: 10vh 7vw; background: var(--surface); border-radius: var(--radius); overflow: hidden; }
.measure svg.logo { width: 100%; height: auto; overflow: visible; position: relative; }
.measure .grid-bg { position: absolute; inset: 0; pointer-events: none; }
.guides line, .guides rect { vector-effect: non-scaling-stroke; }
.guides text { font-family: var(--text); }
.minsize { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.minsize .stage { aspect-ratio: auto; height: 220px; }
.minsize .stage img { max-width: none; }

/* background switcher */
.switch { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 4vw; align-items: stretch; }
.switch .stage { aspect-ratio: 16 / 10; transition: background-color .5s; background-size: cover; background-position: center; }
.switch .stage img { position: absolute; width: 62%; max-width: 62%; transition: opacity .35s; }
.switch .stage img:not(.show) { opacity: 0; }
.swatches { display: flex; flex-direction: column; gap: 2px; }
.swatches button { display: flex; align-items: center; gap: 14px; text-align: left; padding: 12px 14px; border-radius: var(--radius); font-size: 15px; }
.swatches button i { width: 34px; height: 34px; border-radius: 50%; flex: none; box-shadow: inset 0 0 0 1px var(--line); background-size: cover; background-position: center; }
.swatches button span { display: block; font-size: 13px; color: var(--fg2); margin-top: 2px; }
.swatches button[aria-pressed="true"] { background: var(--surface); font-weight: 700; }

/* colour specs */
.spec { width: 100%; border-collapse: collapse; font-size: 15px; font-variant-numeric: tabular-nums; }
.spec th { text-align: left; font-weight: 600; color: var(--fg2); padding: 10px 12px 10px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.spec td { padding: 14px 12px 14px 0; border-bottom: 1px solid var(--line); vertical-align: middle; }
.spec td:first-child { display: flex; align-items: center; gap: 12px; font-weight: 700; }
.spec td i { width: 28px; height: 28px; border-radius: 50%; box-shadow: inset 0 0 0 1px var(--line); flex: none; }
.spec button { text-decoration: underline; text-underline-offset: 3px; font-size: 13px; color: var(--fg2); }
.ratio { display: flex; height: 64px; border-radius: var(--radius); overflow: hidden; box-shadow: inset 0 0 0 1px var(--line); }
.ratio div { display: flex; align-items: flex-end; padding: 8px 10px; font-size: 13px; font-weight: 600; }

/* typography */
.hier { border-top: 1px solid var(--line); }
.hier .row { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 32px; align-items: baseline; padding: 22px 0; border-bottom: 1px solid var(--line); }
.hier .meta { font-size: 13px; line-height: 1.6; color: var(--fg2); }
.hier .meta b { display: block; color: var(--fg); font-size: 15px; }
.hier .sample { overflow-wrap: anywhere; }
.tester { border-top: 1px solid var(--line); padding-top: 24px; }
.tester-bar { display: flex; flex-wrap: wrap; gap: 14px 26px; align-items: center; font-size: 15px; color: var(--fg2); }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.seg button { padding: 8px 16px; font-size: 14px; }
.seg button[aria-pressed="true"] { background: var(--fg); color: var(--bg); }
.tester-out { margin-top: 22px; width: 100%; font: inherit; font-size: clamp(40px, 6vw, 96px); line-height: 1.05; color: var(--fg); background: transparent; border: 0; resize: none; outline: none; min-height: 1.1em; }

/* incorrect use */
.wrong { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.wrong figure .stage { aspect-ratio: 4 / 3; }
.wrong figure .stage img { width: 70%; }
.wrong figure .stage::after { content: ""; position: absolute; inset: 0; background:
  linear-gradient(to top right, transparent calc(50% - 1px), var(--no) calc(50% - 1px), var(--no) calc(50% + 1px), transparent calc(50% + 1px)); opacity: .9; pointer-events: none; }
.wrong figcaption { margin-top: 12px; font-size: 15px; line-height: 1.45; color: var(--fg2); }
.wrong figcaption b { display: block; color: var(--fg); margin-bottom: 2px; }

/* graphic universe */
.icons { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 12px; }
.icons figure { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 12px 14px; display: flex; flex-direction: column; align-items: center; gap: 12px; text-align: center; }
.icons figure img, .icons figure svg { width: 56px; height: 56px; }
.icons figcaption { font-size: 13px; color: var(--fg2); }

/* photography */
.photos { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 12px; }
.photos figure { position: relative; overflow: hidden; border-radius: var(--radius); }
.photos img { width: 100%; height: 100%; object-fit: cover; }
.photos figcaption { position: absolute; left: 12px; bottom: 10px; right: 12px; font-size: 13px; color: #fff; text-shadow: 0 1px 8px rgba(0,0,0,.6); }
.do-dont { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 5vw; }
.do-dont h4 { font-size: 17px; margin-bottom: 8px; display: flex; align-items: center; gap: 10px; }
.do-dont h4::before { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--ok); }
.do-dont .avoid h4::before { background: var(--no); }
.do-dont ul { list-style: none; }
.do-dont li { padding: 12px 0; border-top: 1px solid var(--line); font-size: 16px; line-height: 1.5; color: var(--fg2); }

/* applications */
.apps { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 24px; perspective: 1400px; }
.app { position: relative; }
.app .surface { border-radius: var(--radius); overflow: hidden; display: grid; place-items: center; background: var(--surface); padding: 6vh 3vw; min-height: 340px; }
.app h4 { margin-top: 14px; font-size: 16px; }
.app p { margin-top: 4px; font-size: 14px; color: var(--fg2); line-height: 1.5; }
.mock { transform-origin: 50% 100%; box-shadow: 0 30px 60px -30px rgba(0,0,0,.45), 0 2px 6px rgba(0,0,0,.12); }

/* files */
.files { width: 100%; border-collapse: collapse; font-size: 15px; }
.files th { text-align: left; font-size: 13px; color: var(--fg2); font-weight: 600; padding: 10px 14px 10px 0; border-bottom: 1px solid var(--line); }
.files td { padding: 14px 14px 14px 0; border-bottom: 1px solid var(--line); vertical-align: middle; }
.files td:first-child { width: 120px; }
.files .thumb { height: 64px; width: 104px; display: grid; place-items: center; border-radius: 3px; }
.files .thumb img { max-width: 80%; max-height: 70%; }
.files a { font-weight: 700; text-decoration: none; border-bottom: 1px solid currentColor; margin-right: 14px; }
.tree { font-size: 14px; line-height: 1.9; color: var(--fg2); font-variant-numeric: tabular-nums; }
.tree b { color: var(--fg); font-weight: 700; }
.tree div { padding-left: 18px; position: relative; }
.tree div::before { content: ""; position: absolute; left: 4px; top: 0; bottom: 50%; width: 9px; border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.button { display: inline-flex; align-items: center; gap: 12px; padding: 18px 28px; background: var(--fg); color: var(--bg); text-decoration: none; font-weight: 700; font-size: 17px; border-radius: var(--radius); }

.toast { position: fixed; z-index: 50; left: 50%; bottom: 28px; transform: translate(-50%, 20px); background: var(--fg); color: var(--bg); padding: 12px 18px; border-radius: var(--radius); font-size: 15px; opacity: 0; transition: opacity .25s, transform .25s; pointer-events: none; }
.toast.on { opacity: 1; transform: translate(-50%, 0); }

.family { padding: 28px var(--gutter) 40px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 14px; font-size: 14px; color: var(--fg2); border-top: 1px solid var(--line); }
.family a { color: var(--fg); font-weight: 700; margin-left: 18px; text-decoration: none; }

/* ---------- small screens ---------- */
@media (max-width: 1100px) {
  .rail { display: none; }
  .wrong, .cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .top { height: 56px; grid-template-columns: auto 1fr auto; font-size: 13px; }
  .top .now { max-width: 52vw; justify-self: center; }
  .toc { grid-template-columns: 1fr; }
  .ch-open { grid-template-columns: 1fr; gap: 18px; padding-top: 14vh; }
  .cols, .cols-3, .switch, .do-dont, .minsize, .points { grid-template-columns: 1fr; }
  .arch { grid-template-columns: 1fr; }
  .arch-lines { display: none; }
  .parts { grid-template-columns: 1fr; }
  .facts { grid-template-columns: 1fr; }
  .hier .row { grid-template-columns: 1fr; gap: 10px; }
  .apps > * { grid-column: 1 / -1 !important; }
  .photos > * { grid-column: span 12 !important; grid-row: auto !important; height: 60vw; }
  .files td:first-child { display: none; }
  .spec, .files { display: block; overflow-x: auto; white-space: nowrap; }
  .family { flex-direction: column; }
  .family a { margin: 0 14px 0 0; }
}

/* ---------- reduced motion ---------- */
.static .ch-open .motif { transform: none; transition: none; }

/* ---------- photographic mockups: the real logo mapped onto a photo in perspective ---------- */
.mockups { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: 20px; }
.mockup { position: relative; margin: 0; isolation: isolate; overflow: hidden; border-radius: var(--radius); background: var(--surface); }
.mockup > img { display: block; width: 100%; height: auto; }
.mockup .layer { position: absolute; left: 0; top: 0; transform-origin: 0 0; pointer-events: none; overflow: hidden; }
.mockup .layer > img { display: block; }
.mockup figcaption { position: absolute; left: 14px; bottom: 12px; right: 14px; display: flex; flex-direction: column; gap: 2px; color: #fff; font-size: 13px; text-shadow: 0 1px 10px rgba(0, 0, 0, .55); z-index: 2; }
.mockup figcaption b { font-size: 15px; }
.mock-note { margin-top: 14px; font-size: 13px; color: var(--fg2); }

/* ---------- reviewed by ---------- */
.reviewed { margin-top: 26px; font-size: 15px; line-height: 1.6; color: var(--fg2); max-width: 62ch; padding-left: 14px; border-left: 2px solid var(--accent); }
.reviewed b { color: var(--fg); font-weight: 700; }
.reviewed a { color: var(--fg); font-weight: 700; }
.foot { padding: 28px var(--gutter) 40px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 18px 40px; align-items: start; font-size: 14px; line-height: 1.6; color: var(--fg2); border-top: 1px solid var(--line); }
.foot b, .foot a { color: var(--fg); font-weight: 700; }
.foot nav a { margin-left: 18px; text-decoration: none; }

/* ---------- files and deliverables ---------- */
.kit-bar { display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr)); gap: 12px; }
.kit-bar a { display: flex; flex-direction: column; justify-content: center; gap: 4px; padding: 20px 22px; border-radius: var(--radius); text-decoration: none; box-shadow: inset 0 0 0 1px var(--line); transition: background .2s, box-shadow .2s; }
.kit-bar a b { display: flex; align-items: center; gap: 10px; font-size: 17px; }
.kit-bar a span { font-size: 13px; color: var(--fg2); }
.kit-bar a:hover { box-shadow: inset 0 0 0 1px var(--fg); }
.kit-bar a.all { background: var(--fg); color: var(--bg); box-shadow: none; }
.kit-bar a.all span { color: inherit; opacity: .75; }
.kit-bar svg, .fbtn svg { width: 16px; height: 16px; flex: none; }
.file-grid { margin-top: 28px; display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.file-card { display: flex; flex-direction: column; border-radius: var(--radius); box-shadow: inset 0 0 0 1px var(--line); overflow: hidden; }
.file-card .thumb { aspect-ratio: 16 / 9; display: grid; place-items: center; }
.file-card .thumb img { max-width: 70%; max-height: 62%; }
.file-card .fc-info { padding: 16px 16px 4px; }
.file-card .fc-info b { display: block; font-size: 16px; }
.file-card .fc-info span { display: block; margin-top: 3px; font-size: 14px; line-height: 1.45; color: var(--fg2); }
.file-card .btns { margin-top: auto; padding: 14px 16px 16px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.fbtn { display: flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 0; border-radius: var(--radius); font-size: 13px; font-weight: 700; text-decoration: none; box-shadow: inset 0 0 0 1px var(--line); transition: background .2s, color .2s, box-shadow .2s; }
.fbtn small { font-weight: 400; color: var(--fg2); }
.fbtn:hover { background: var(--fg); color: var(--bg); box-shadow: none; }
.fbtn:hover small { color: inherit; opacity: .7; }
.formats { margin-top: 40px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.formats div { padding: 20px; border-radius: var(--radius); background: var(--surface); }
.formats b { display: block; font-size: 17px; }
.formats p { margin-top: 6px; font-size: 14px; line-height: 1.55; color: var(--fg2); }

@media (max-width: 900px) {
  .kit-bar { grid-template-columns: 1fr 1fr; }
  .kit-bar a.all { grid-column: 1 / -1; }
  .formats { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .mockups > * { grid-column: 1 / -1 !important; }
  .foot { grid-template-columns: 1fr; }
  .foot nav a { margin: 0 14px 0 0; }
}