/* npad.dev - hand-written, no framework, no build step.
   Light by default, follows the system colour scheme; the header toggle
   (theme.js) can override it per visitor. */

:root {
  color-scheme: light;
  --bg: #ffffff;
  --bg-alt: #f4f6f9;
  --surface: #ffffff;
  --text: #16181d;
  --muted: #4f5662;
  --border: #d8dce3;
  --accent: #0b5cc9;
  --accent-hover: #084aa3;
  --accent-text: #ffffff;
  --accent-soft: #e6f0fd;
  --card: #f5f8fc;
  --dot: rgb(22 30 48 / 14%);
  --code-bg: #eef1f5;
  --hero-glow: radial-gradient(60rem 28rem at 50% -8rem, #dcebff 0%, transparent 70%);
  --shadow: 0 1px 2px rgb(16 24 40 / 8%), 0 18px 40px rgb(16 24 40 / 14%);
  --font: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, "Ubuntu", "Cantarell", "Noto Sans", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "Cascadia Code", Consolas, "DejaVu Sans Mono", Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #17181b;
    --bg-alt: #1e1f23;
    --surface: #24262b;
    --text: #ececef;
    --muted: #a8adb7;
    --border: #383b42;
    --accent: #6aa5f5;
    --accent-hover: #8dbcf8;
    --accent-text: #0b1a2e;
    --accent-soft: #1d2b42;
    --card: #24262b;
    --dot: rgb(255 255 255 / 10%);
    --code-bg: #111214;
    --hero-glow: radial-gradient(60rem 28rem at 50% -8rem, #1b2f50 0%, transparent 70%);
    --shadow: 0 1px 2px rgb(0 0 0 / 50%), 0 18px 40px rgb(0 0 0 / 50%);
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #17181b;
  --bg-alt: #1e1f23;
  --surface: #24262b;
  --text: #ececef;
  --muted: #a8adb7;
  --border: #383b42;
  --accent: #6aa5f5;
  --accent-hover: #8dbcf8;
  --accent-text: #0b1a2e;
  --accent-soft: #1d2b42;
  --card: #24262b;
  --dot: rgb(255 255 255 / 10%);
  --code-bg: #111214;
  --hero-glow: radial-gradient(60rem 28rem at 50% -8rem, #1b2f50 0%, transparent 70%);
  --shadow: 0 1px 2px rgb(0 0 0 / 50%), 0 18px 40px rgb(0 0 0 / 50%);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 5rem; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 1rem/1.65 var(--font);
  -webkit-text-size-adjust: 100%;
  background-image: radial-gradient(var(--dot) 1.2px, transparent 1.6px);
  background-size: 26px 26px;
  background-position: 13px 13px;
}

img { max-width: 100%; height: auto; }
a { color: var(--accent); text-underline-offset: 0.15em; }
a:hover { color: var(--accent-hover); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

.wrap { width: min(72rem, 100% - 2rem); margin-inline: auto; }
.narrow { width: min(48rem, 100% - 2rem); margin-inline: auto; }

.skip {
  position: absolute; left: 0.5rem; top: -4rem; z-index: 30;
  background: var(--accent); color: var(--accent-text);
  padding: 0.5rem 1rem; border-radius: 0.4rem; text-decoration: none; font-weight: 600;
}
.skip:focus { top: 0.5rem; }

/* theme-specific pictures: shown for the matching colour scheme only */
picture.for-dark { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) picture.for-light { display: none; }
  :root:not([data-theme="light"]) picture.for-dark { display: block; }
}
:root[data-theme="dark"] picture.for-light { display: none; }
:root[data-theme="dark"] picture.for-dark { display: block; }
picture.for-light, picture.for-dark { line-height: 0; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.bar { display: flex; align-items: center; gap: 0.75rem 1.5rem; min-height: 3.75rem; }
.brand { display: inline-flex; align-items: center; gap: 0.6rem; font-weight: 700; font-size: 1.3rem; color: var(--text); text-decoration: none; letter-spacing: -0.02em; }
.brand picture, .brand img { width: 30px; height: 30px; }
.brand:hover { color: var(--text); }
.nav { flex: 1; }
.nav ul { display: flex; flex-wrap: wrap; gap: 0.15rem 0.25rem; margin: 0; padding: 0; list-style: none; }
.nav a { display: block; color: var(--muted); text-decoration: none; padding: 0.4rem 0.8rem; border-radius: 0.5rem; font-size: 0.97rem; font-weight: 500; }
.nav a:hover { color: var(--text); background: var(--bg-alt); }
.nav a[aria-current="page"] { color: var(--text); background: var(--accent-soft); }
.bar-end { display: flex; align-items: center; gap: 0.6rem; margin-left: auto; }

#theme-toggle {
  display: none; align-items: center; justify-content: center;
  width: 2.4rem; height: 2.4rem; border-radius: 0.5rem; cursor: pointer;
  background: transparent; color: var(--muted); border: 1px solid var(--border);
}
.js #theme-toggle { display: inline-flex; }
#theme-toggle:hover { color: var(--text); background: var(--bg-alt); }
#theme-toggle svg { width: 1.2rem; height: 1.2rem; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
#theme-toggle .moon { display: none; }
:root[data-theme="dark"] #theme-toggle .sun { display: none; }
:root[data-theme="dark"] #theme-toggle .moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) #theme-toggle .sun { display: none; }
  :root:not([data-theme="light"]) #theme-toggle .moon { display: block; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block; padding: 0.7rem 1.35rem; border-radius: 0.6rem;
  font-weight: 600; text-decoration: none; border: 1px solid var(--border);
  color: var(--text); background: var(--surface); line-height: 1.3; text-align: center;
}
.btn:hover { border-color: var(--accent); color: var(--text); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--accent-text); }
.btn.small { padding: 0.45rem 1rem; font-size: 0.95rem; }
.btn.big { font-size: 1.1rem; padding: 0.9rem 1.8rem; }

/* ---------- hero ---------- */
.hero { padding: 4.5rem 0 3rem; text-align: center; background-image: var(--hero-glow); }
.eyebrow { display: inline-block; font-size: 0.85rem; font-weight: 600; color: var(--accent); background: var(--accent-soft); padding: 0.25rem 0.8rem; border-radius: 999px; margin: 0 0 1.25rem; }
.hero h1 { font-size: clamp(2.4rem, 7vw, 4.4rem); line-height: 1.05; margin: 0 auto 1.1rem; letter-spacing: -0.035em; max-width: 16ch; text-wrap: balance; }
.hero .lede { font-size: clamp(1.1rem, 2.4vw, 1.4rem); line-height: 1.5; color: var(--muted); margin: 0 auto 2rem; max-width: 40rem; text-wrap: pretty; }
.cta { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.75rem; }
.fine { color: var(--muted); font-size: 0.9rem; margin: 1rem 0 0; }

.screen { margin: 3rem auto 0; max-width: 64rem; }
.screen img { display: block; width: 100%; border-radius: 0.75rem; border: 1px solid var(--border); box-shadow: var(--shadow); }
figcaption { color: var(--muted); font-size: 0.9rem; margin-top: 0.8rem; }
.screen figcaption { text-align: center; }

/* ---------- sections ---------- */
section { padding: 5rem 0; }
section.alt { background: var(--bg-alt); background: color-mix(in srgb, var(--bg-alt) 82%, transparent); border-block: 1px solid var(--border); }
section.tight { padding: 3rem 0; }
.center { text-align: center; }
h2 { font-size: clamp(1.8rem, 4.4vw, 2.6rem); line-height: 1.15; margin: 0 0 0.75rem; letter-spacing: -0.025em; text-wrap: balance; }
h3 { font-size: 1.15rem; margin: 0 0 0.4rem; line-height: 1.3; }
.intro { color: var(--muted); font-size: 1.1rem; max-width: 56rem; margin: 0 0 2.5rem; text-wrap: pretty; }
.center .intro, .intro.center { margin-inline: auto; }

.stats ul { display: grid; grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr)); gap: 1.5rem; margin: 0; padding: 0; list-style: none; text-align: center; }
.stats strong { display: block; font-size: clamp(2rem, 5vw, 2.8rem); line-height: 1.1; letter-spacing: -0.03em; }
.stats span { color: var(--muted); font-size: 0.95rem; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr)); gap: 1.25rem; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 0.9rem; padding: 1.5rem; }
.card > :last-child { margin-bottom: 0; }
.card p { margin: 0 0 0.75rem; color: var(--muted); font-size: 0.97rem; }
.card.wide { grid-column: 1 / -1; }
.icon { display: grid; place-items: center; width: 2.6rem; height: 2.6rem; border-radius: 0.7rem; background: var(--accent-soft); color: var(--accent); font-size: 1.3rem; margin-bottom: 0.9rem; }

/* alternating feature rows */
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.row + .row { margin-top: 5rem; }
.row.flip .row-text { order: 2; }
.row-text h2 { font-size: clamp(1.6rem, 3.6vw, 2.2rem); }
.row-text p { color: var(--muted); font-size: 1.05rem; margin: 0 0 1rem; }
.row-text ul { padding-left: 1.2rem; margin: 0 0 1rem; color: var(--muted); }
.row-text li { margin-bottom: 0.4rem; }
.row-text li::marker { color: var(--accent); }
.row-text a.more { font-weight: 600; text-decoration: none; }
.row-text a.more:hover { text-decoration: underline; }
.visual img, .visual .panel { display: block; width: 100%; border-radius: 0.75rem; border: 1px solid var(--border); box-shadow: var(--shadow); }
.visual figcaption { text-align: left; }

.panel { background: var(--surface); padding: 1.5rem; }
.keys { display: grid; gap: 0.7rem; margin: 0; padding: 0; list-style: none; }
.keys li { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-bottom: 0.7rem; border-bottom: 1px solid var(--border); }
.keys li:last-child { border: 0; padding-bottom: 0; }
.keys span { color: var(--muted); }
kbd { font-family: var(--mono); font-size: 0.85rem; background: var(--code-bg); border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 0.4rem; padding: 0.1rem 0.45rem; white-space: nowrap; }
.big-stat { font-size: clamp(3rem, 9vw, 5rem); font-weight: 700; letter-spacing: -0.04em; line-height: 1; color: var(--accent); margin: 0; }
.panel .big-stat + p { margin: 0.4rem 0 1.4rem; color: var(--muted); }
.panel .big-stat:last-of-type + p { margin-bottom: 0; }

.badge { display: inline-block; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.03em; text-transform: uppercase; padding: 0.1rem 0.55rem; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); vertical-align: middle; margin-left: 0.5rem; }
.badge.ok { border-color: #1f8a4c; color: #17703d; }
.badge.soon { border-color: #b8860b; color: #8a6100; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .badge.ok { border-color: #3fbf75; color: #5ed18d; }
  :root:not([data-theme="light"]) .badge.soon { border-color: #d9a520; color: #f0c04a; }
}
:root[data-theme="dark"] .badge.ok { border-color: #3fbf75; color: #5ed18d; }
:root[data-theme="dark"] .badge.soon { border-color: #d9a520; color: #f0c04a; }

code, pre { font-family: var(--mono); font-size: 0.875em; }
code { background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 0.3rem; overflow-wrap: anywhere; }
pre { background: var(--code-bg); border: 1px solid var(--border); border-radius: 0.6rem; padding: 0.9rem 1rem; overflow-x: auto; margin: 0 0 0.75rem; line-height: 1.55; }
pre code { background: none; padding: 0; overflow-wrap: normal; }

.note { border-left: 4px solid var(--accent); background: var(--card); border-radius: 0 0.6rem 0.6rem 0; padding: 0.9rem 1.1rem; margin: 1.75rem 0 0; color: var(--muted); font-size: 0.97rem; }
.note strong { color: var(--text); }

.platforms { display: grid; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); gap: 1.25rem; }
.platforms .card h3 { display: flex; align-items: center; flex-wrap: wrap; gap: 0.25rem 0; }

.nots { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem; padding: 0; margin: 0; list-style: none; }
.nots li { border: 1px solid var(--border); background: var(--card); border-radius: 999px; padding: 0.35rem 1.1rem; }

details { background: var(--card); border: 1px solid var(--border); border-radius: 0.75rem; padding: 0 1.25rem; margin-bottom: 0.75rem; }
summary { cursor: pointer; font-weight: 600; padding: 1rem 0 1rem 1.7rem; list-style: none; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::before { content: ""; position: absolute; left: 0.2rem; top: 50%; width: 0.5rem; height: 0.5rem; margin-top: -0.35rem; border-right: 2px solid var(--accent); border-bottom: 2px solid var(--accent); transform: rotate(-45deg); transition: transform 0.15s; }
details[open] > summary::before { transform: rotate(45deg); margin-top: -0.45rem; }
@media (prefers-reduced-motion: reduce) { summary::before { transition: none; } }
details[open] summary { border-bottom: 1px solid var(--border); margin-bottom: 0.9rem; }
details p { color: var(--muted); margin: 0 0 1rem; }

.cta-band { text-align: center; background: var(--accent-soft); border: 1px solid var(--border); border-radius: 1.25rem; padding: 3.5rem 1.5rem; }
.cta-band p { color: var(--muted); font-size: 1.1rem; margin: 0 auto 1.75rem; max-width: 34rem; }

/* sub-page header */
.page-head { padding: 3.5rem 0 2rem; background-image: var(--hero-glow); }
.page-head h1 { font-size: clamp(2rem, 5.5vw, 3.2rem); line-height: 1.1; letter-spacing: -0.03em; margin: 0 0 0.75rem; text-wrap: balance; }
.page-head p { color: var(--muted); font-size: 1.15rem; margin: 0; max-width: 42rem; }
.page-head + section { padding-top: 2.5rem; }

.os-title { display: flex; align-items: center; flex-wrap: wrap; gap: 0.25rem; margin: 0 0 1.25rem; }
.os-title h2 { font-size: 1.7rem; margin: 0; }
.os-block + .os-block { margin-top: 4rem; }

.groups { display: grid; grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr)); gap: 1.25rem; }
.groups ul { margin: 0; padding-left: 1.2rem; color: var(--muted); }
.groups li { margin-bottom: 0.5rem; }
.groups li strong { color: var(--text); }
.groups li::marker { color: var(--accent); }

table { width: 100%; border-collapse: collapse; font-size: 0.97rem; }
th, td { text-align: left; padding: 0.6rem 0.8rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.04em; }
.table-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--border); border-radius: 0.75rem; margin-bottom: 2rem; }
.table-wrap table { min-width: 28rem; }
.table-wrap tr:last-child td { border-bottom: 0; }

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--border); padding: 3rem 0 2.5rem; color: var(--muted); font-size: 0.93rem; background: var(--bg-alt); }
footer .cols { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 2rem; }
footer h2 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text); margin: 0 0 0.75rem; }
footer ul { margin: 0; padding: 0; list-style: none; }
footer li { margin-bottom: 0.4rem; }
footer p { margin: 0 0 0.6rem; }
footer .legal { border-top: 1px solid var(--border); margin-top: 2rem; padding-top: 1.25rem; }

@media (max-width: 52rem) {
  .row { grid-template-columns: 1fr; gap: 1.5rem; }
  .row.flip .row-text { order: 0; }
  .row + .row { margin-top: 3.5rem; }
  footer .cols { grid-template-columns: 1fr 1fr; }
  footer .cols > :first-child { grid-column: 1 / -1; }
}

@media (max-width: 40rem) {
  html { scroll-padding-top: 1rem; }
  section { padding: 3.25rem 0; }
  .site-header { position: static; }
  .bar { flex-wrap: wrap; padding-block: 0.6rem 0.4rem; min-height: 0; row-gap: 0.25rem; }
  .nav { order: 3; flex: 1 1 100%; min-width: 0; margin-inline: -0.5rem; overflow-x: auto; }
  .nav ul { flex-wrap: nowrap; overflow-x: auto; }
  .nav a { white-space: nowrap; padding-inline: 0.65rem; }
  .bar-end .btn { display: none; }
  .hero { padding-top: 2.5rem; }
  .cta .btn { flex: 1 1 100%; }
  .screen { margin-top: 2rem; }
  .cta-band { padding: 2.5rem 1.25rem; }
}

@media print {
  .site-header, .skip, .cta, .cta-band { display: none; }
  body { background: #fff; color: #000; }
}


/* ---------- v2: tints, gallery, lightbox, feature blocks ---------- */
section.alt .card, section.alt details, section.alt .nots li, section.alt .table-wrap, section.alt .note { background: var(--surface); }

:root { --h1: #3b82f6; --h2: #22a06b; --h3: #d99a12; --h4: #e0527a; --h5: #8b5cf6; --h6: #12a9a0; --h7: #ee7a2e; --h8: #0ea5e9; }
.t1 { --h: var(--h1); } .t2 { --h: var(--h2); } .t3 { --h: var(--h3); } .t4 { --h: var(--h4); }
.t5 { --h: var(--h5); } .t6 { --h: var(--h6); } .t7 { --h: var(--h7); } .t8 { --h: var(--h8); }
.tint { background: color-mix(in srgb, var(--h) 9%, var(--surface)) !important; border-color: color-mix(in srgb, var(--h) 32%, var(--border)) !important; position: relative; overflow: hidden; }
.card.tint::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; background: var(--h); }
.tint .icon { background: color-mix(in srgb, var(--h) 18%, transparent); color: color-mix(in srgb, var(--h) 70%, var(--text)); }
.nots li.tint { background: color-mix(in srgb, var(--h) 12%, var(--surface)) !important; font-weight: 500; }

/* gallery */
.gallery { margin: 3rem auto 0; max-width: 64rem; text-align: left; }
.shot { margin: 0; }
.shot > a { display: block; aspect-ratio: 16 / 10; background: var(--bg-alt); border: 1px solid var(--border); border-radius: 0.75rem; box-shadow: var(--shadow); overflow: hidden; cursor: zoom-in; position: relative; }
.shot img { display: block; width: 100%; height: 100%; object-fit: contain; }
.shot figcaption { text-align: center; margin-top: 0.8rem; }
.gallery:not(.is-js) .shot + .shot { margin-top: 2.5rem; }
.stage { position: relative; display: grid; }
.is-js .shot { grid-area: 1 / 1; visibility: hidden; margin: 0; }
.is-js .shot.active { visibility: visible; }
.stage-btn { position: absolute; top: 40%; transform: translateY(-50%); z-index: 2; width: 2.6rem; height: 2.6rem; border-radius: 50%; border: 1px solid var(--border); background: var(--bg); background: color-mix(in srgb, var(--bg) 88%, transparent); color: var(--text); font-size: 1.5rem; line-height: 1; cursor: pointer; display: grid; place-items: center; box-shadow: 0 2px 8px rgb(0 0 0 / 20%); }
.stage-btn:hover { border-color: var(--accent); color: var(--accent); }
.stage-btn.prev { left: 0.75rem; }
.stage-btn.next { right: 0.75rem; }
.thumbs { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem; margin-top: 1rem; }
.thumb { background: var(--card); border: 2px solid var(--border); border-radius: 0.55rem; padding: 0; cursor: pointer; width: 7.5rem; overflow: hidden; color: var(--muted); font: inherit; font-size: 0.75rem; text-align: center; }
.thumb img { display: block; width: 100%; aspect-ratio: 16 / 10; object-fit: cover; object-position: top; }
.thumb span { display: block; padding: 0.2rem 0.3rem; line-height: 1.25; }
.thumb:hover { border-color: color-mix(in srgb, var(--accent) 60%, var(--border)); }
.thumb[aria-pressed="true"] { border-color: var(--accent); color: var(--text); box-shadow: 0 0 0 1px var(--accent); }

a.zoom { cursor: zoom-in; }
dialog.lightbox { border: 0; padding: 0; background: transparent; max-width: none; max-height: none; width: 100vw; height: 100vh; height: 100dvh; color: #fff; }
dialog.lightbox::backdrop { background: rgb(8 10 14 / 90%); }
.lb-body { position: absolute; inset: 0; display: grid; grid-template-rows: 1fr auto; place-items: center; padding: 1rem 4rem; gap: 0.75rem; }
.lb-body img { max-width: 100%; max-height: calc(100vh - 6.5rem); width: auto; height: auto; object-fit: contain; border-radius: 0.4rem; background: #fff; box-shadow: 0 10px 40px rgb(0 0 0 / 50%); }
.lb-body p { margin: 0; color: #d6dae2; font-size: 0.95rem; text-align: center; max-width: 60rem; }
.lb-btn { position: absolute; z-index: 3; background: rgb(255 255 255 / 12%); color: #fff; border: 1px solid rgb(255 255 255 / 30%); border-radius: 50%; width: 2.8rem; height: 2.8rem; font-size: 1.6rem; line-height: 1; cursor: pointer; display: grid; place-items: center; }
.lb-btn:hover { background: rgb(255 255 255 / 25%); }
.lb-close { top: 0.75rem; right: 0.75rem; }
.lb-prev { left: 0.75rem; top: 50%; }
.lb-next { right: 0.75rem; top: 50%; }
.lb-btn[hidden] { display: none; }

/* feature blocks (features page) */
.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1.5rem 0 0; padding: 0; list-style: none; }
.chips a { display: block; text-decoration: none; font-weight: 600; font-size: 0.9rem; padding: 0.3rem 0.95rem; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); background: color-mix(in srgb, var(--h) 14%, var(--surface)); border: 1px solid color-mix(in srgb, var(--h) 40%, var(--border)); color: var(--text); }
.chips a:hover { background: color-mix(in srgb, var(--h) 26%, var(--surface)); color: var(--text); }
.fblock .row { align-items: start; }
.fblock h2 { display: flex; align-items: center; gap: 0.7rem; font-size: clamp(1.6rem, 3.6vw, 2.1rem); }
.fblock h2 .icon { margin: 0; flex: none; }
.fblock ul.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.8rem; }
.fblock ul.checks li { padding-left: 1.7rem; position: relative; color: var(--muted); }
.fblock ul.checks li::before { content: ""; position: absolute; left: 0; top: 0.5em; width: 0.7rem; height: 0.7rem; border-radius: 50%; background: var(--h); }
.fblock ul.checks strong { color: var(--text); }
.fblock .visual .panel { border-top: 3px solid var(--h); }
.fblock .visual > * + * { margin-top: 1rem; }
.codebox { font-family: var(--mono); font-size: 0.9rem; white-space: pre-wrap; margin: 0; background: var(--code-bg); border: 1px solid var(--border); border-radius: 0.6rem; padding: 0.9rem 1rem; }
.mini { margin: 0.9rem 0 0; font-size: 0.95rem; color: var(--muted); }
.fblock .visual .zoomwrap img { display: block; width: 100%; border-radius: 0.75rem; border: 1px solid var(--border); border-top: 3px solid var(--h); box-shadow: var(--shadow); }

@media (max-width: 40rem) {
  .gallery { margin-top: 2rem; }
  .thumb { width: calc(33.333% - 0.4rem); }
  .stage-btn { width: 2.2rem; height: 2.2rem; font-size: 1.2rem; }
  .lb-body { padding: 3.5rem 0.5rem 4.5rem; }
  .lb-prev { left: 0.4rem; top: auto; bottom: 0.9rem; }
  .lb-next { right: 0.4rem; top: auto; bottom: 0.9rem; }
}
@media print { dialog.lightbox, .stage-btn, .thumbs { display: none; } }

.icon.tint { background: color-mix(in srgb, var(--h) 22%, var(--surface)) !important; border: 0 !important; }
.zoomwrap { margin: 0; }
.zoomwrap a { display: block; }
.cards.four { grid-template-columns: repeat(auto-fit, minmax(13.5rem, 1fr)); }


/* ---------- review fixes ---------- */
.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; }
.card-title { font-size: 1.15rem; margin: 0 0 0.4rem; line-height: 1.3; letter-spacing: 0; }
a.card .card-title { color: var(--text); }
body:has(dialog.lightbox[open]) { overflow: hidden; }

/* numbered steps (the flex list items lose their native markers) */
.keys.steps { counter-reset: step; }
.keys.steps li { counter-increment: step; justify-content: flex-start; gap: 0.8rem; }
.keys.steps li::before { content: counter(step); flex: none; display: grid; place-items: center; width: 1.7rem; height: 1.7rem; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-weight: 700; font-size: 0.9rem; }

/* Windows High Contrast / forced colours: restore cues that rely on background colour */
@media (forced-colors: active) {
  .fblock ul.checks li::before { background: CanvasText; }
  .nav a[aria-current="page"] { border-bottom: 3px solid Highlight; border-radius: 0; }
  .thumb[aria-pressed="true"] { outline: 3px solid Highlight; outline-offset: 1px; }
  .card.tint::before { background: CanvasText; }
  .btn.primary { border: 2px solid ButtonText; }
  .keys.steps li::before { border: 1px solid CanvasText; }
  summary::before { border-color: CanvasText; }
  .shot > a, .stage-btn, .lb-btn { border: 1px solid CanvasText; }
}
@media (max-width: 40rem) { .nav { scrollbar-width: none; } .nav::-webkit-scrollbar { display: none; } }

/* extension lists and other kbd runs may wrap on narrow screens */
.keys li { flex-wrap: wrap; }
.keys kbd { white-space: normal; text-align: right; overflow-wrap: anywhere; }