/* The BioKids website.
 *
 * The product's own design tokens (src/biokids_core/data/static/tokens.css,
 * UX.md §1) with a few the site needs on top: the deep indigo of the boot
 * menu for the footer, and wider layout sizes. Warm, rounded, generous - the
 * same art direction as the launcher and the panel, so the site looks like
 * the thing it describes.
 *
 * Fredoka is the product's, copied at build time from biokids_core. Never
 * from Google Fonts: a font request is a tracking request.
 */

@font-face {
  font-family: "Fredoka";
  src: url("../fonts/Fredoka-Regular.woff2") format("woff2");
  font-weight: 100 450;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Fredoka";
  src: url("../fonts/Fredoka-Medium.woff2") format("woff2");
  font-weight: 451 900;
  font-style: normal;
  font-display: swap;
}

:root {
  /* brand, as in tokens.css */
  --bio-coral: #FF6B5B;
  --bio-amber: #FFB020;
  --bio-teal: #1FB6A6;
  --bio-indigo: #4B54C8;
  --ok: #2EA86A;
  --warn: #F2A32B;
  --danger: #E04A3F;

  --bg: #FBF7F2;
  --surface: #FFFFFF;
  --ink: #221E1C;
  --ink-soft: #6B625C;
  --line: #E7DED5;

  /* the site's own */
  --night: #1F224D;          /* the boot menu's deep indigo (debian/grub/theme) */
  --night-soft: #2B2F66;
  --cream: #FBF7F2;
  --indigo-dark: #3A42AE;
  --link: #3F48BD;           /* 6.4:1 on --bg */
  --sand: #F4ECE2;
  --coral-ink: #B23A2C;      /* coral as text: 5.2:1 on white */
  --teal-ink: #0E6E64;
  --amber-ink: #8A5A00;

  --tint-coral: #FFE7E3;
  --tint-amber: #FFF1D6;
  --tint-teal: #DDF4F1;
  --tint-indigo: #E5E7FA;

  --r-sm: 10px;
  --r-md: 18px;
  --r-lg: 28px;
  --r-xl: 36px;
  --r-pill: 999px;

  --shadow-1: 0 2px 6px rgba(34, 30, 28, .08);
  --shadow-2: 0 8px 24px rgba(34, 30, 28, .12);
  --shadow-3: 0 24px 60px rgba(34, 30, 28, .16);

  --font: "Fredoka", "Noto Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "Cascadia Mono", "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  --font-emoji: "Noto Color Emoji", "Apple Color Emoji", "Segoe UI Emoji", sans-serif;

  --wrap: 1180px;
  --narrow: 760px;
  --gutter: 20px;
  --header-h: 72px;

  color-scheme: light;
}

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

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  font-weight: 400;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg, video { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 {
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 .5em;
  text-wrap: balance;
}

h1 { font-size: clamp(2.15rem, 5.2vw, 3.7rem); }
h2 { font-size: clamp(1.65rem, 3.4vw, 2.45rem); }
h3 { font-size: 1.28rem; line-height: 1.3; }
h4 { font-size: 1.08rem; }

p { margin: 0 0 1em; text-wrap: pretty; }

a { color: var(--link); text-decoration-thickness: .08em; text-underline-offset: .18em; }
a:hover { color: var(--indigo-dark); text-decoration-thickness: .12em; }

strong, b { font-weight: 500; }

:focus-visible {
  outline: 3px solid var(--bio-amber);
  outline-offset: 3px;
  border-radius: 6px;
}

::selection { background: var(--tint-amber); color: var(--ink); }

/* Scrollbars in the site's colours: a soft indigo pill on the warm
 * off-white, the buttons' indigo under the pointer, and the kite's four
 * colours while it is dragged. Chrome, Edge and Safari read the
 * ::-webkit-scrollbar rules - but ignore them once scrollbar-color is set, so
 * the standard properties go only to browsers without those rules (Firefox). */
::-webkit-scrollbar { width: 14px; height: 14px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  min-height: 56px;
  border: 4px solid transparent;
  border-radius: var(--r-pill);
  background: #A4A9E4 padding-box;
}
::-webkit-scrollbar-thumb:hover { background: var(--bio-indigo) padding-box; }
::-webkit-scrollbar-thumb:active {
  background: linear-gradient(180deg, var(--bio-coral), var(--bio-amber), var(--bio-teal), var(--bio-indigo)) padding-box;
}
::-webkit-scrollbar-corner { background: transparent; }

/* Scroll areas inside the page are slimmer and sit on their own background. */
.code pre::-webkit-scrollbar,
.table-wrap::-webkit-scrollbar,
.aside-sticky::-webkit-scrollbar { width: 10px; height: 10px; }
.code pre::-webkit-scrollbar-track { background: #221E1C; }
.code pre::-webkit-scrollbar-thumb { border-width: 3px; background: #5C534D padding-box; }
.code pre::-webkit-scrollbar-thumb:hover { background: #7A706A padding-box; }
.table-wrap::-webkit-scrollbar-track { background: var(--surface); border-radius: 0 0 var(--r-md) var(--r-md); }
.aside-sticky::-webkit-scrollbar-track { background: transparent; }
.table-wrap::-webkit-scrollbar-thumb,
.aside-sticky::-webkit-scrollbar-thumb { border-width: 3px; background: #D3C5B6 padding-box; }
.table-wrap::-webkit-scrollbar-thumb:hover,
.aside-sticky::-webkit-scrollbar-thumb:hover { background: #A4A9E4 padding-box; }
/* The guides' sidebar shows its bar only while the pointer is over it. */
.aside-sticky:not(:hover)::-webkit-scrollbar-thumb { background: transparent; }

@supports not selector(::-webkit-scrollbar) {
  html { scrollbar-color: #A4A9E4 var(--bg); }
  .code pre { scrollbar-color: #5C534D #221E1C; scrollbar-width: thin; }
  .table-wrap, .aside-sticky { scrollbar-color: #D3C5B6 transparent; scrollbar-width: thin; }
}

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

.skip {
  position: absolute;
  left: 12px; top: -60px;
  z-index: 100;
  background: var(--night);
  color: var(--cream);
  padding: 10px 18px;
  border-radius: var(--r-pill);
  text-decoration: none;
  transition: top .15s;
}
.skip:focus { top: 12px; color: var(--cream); }

main:focus { outline: none; }

.wrap {
  width: 100%;
  max-width: calc(var(--wrap) + 2 * var(--gutter));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.narrow { max-width: calc(var(--narrow) + 2 * var(--gutter)); }

.emoji, .ico, .callout-icon { font-family: var(--font-emoji); font-weight: 400; }

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 247, 242, .86);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, box-shadow .2s;
}
.site-header.scrolled { border-bottom-color: var(--line); box-shadow: 0 6px 24px rgba(34, 30, 28, .05); }

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: var(--header-h);
}

.brand { display: inline-flex; flex: none; border-radius: var(--r-sm); }
.brand img { width: 156px; height: 48px; }

.nav { margin-left: auto; }
.nav ul { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav a {
  display: block;
  padding: 8px 14px;
  border-radius: var(--r-pill);
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  transition: background .15s;
}
.nav a:hover { background: var(--sand); color: var(--ink); }
.nav a[aria-current="page"] { background: var(--tint-indigo); color: var(--indigo-dark); }

.header-actions { display: flex; align-items: center; gap: 10px; }

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  font-size: .95rem;
  line-height: 1;
}
.lang-switch:hover { border-color: var(--ink-soft); color: var(--ink); }

.ic { display: inline-block; width: 1.15em; height: 1.15em; flex: none; }
.gh-mark { display: inline-block; width: 1.1em; height: 1.1em; vertical-align: -0.16em; flex: none; }
.gh-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 40px;
  padding: 0 14px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  font-size: .95rem;
}
.gh-link:hover { border-color: var(--ink-soft); color: var(--ink); }
.gh-link .gh-mark { width: 18px; height: 18px; }
.hero-gh { margin: 18px 0 0; font-size: .98rem; }
.hero-gh a { color: var(--ink-soft); text-decoration: none; display: inline-flex; align-items: center; gap: 8px; }
.hero-gh a:hover { color: var(--ink); text-decoration: underline; }

.gh-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(20px, 4vw, 44px);
  align-items: center;
  padding: clamp(28px, 4vw, 48px);
  border-radius: var(--r-xl);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-1);
}
.gh-card-mark { display: grid; place-items: center; width: 108px; height: 108px; border-radius: 30px; background: var(--night); color: var(--cream); }
.gh-card-mark .gh-mark { width: 56px; height: 56px; }
.gh-card h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); margin-bottom: .35em; }
.gh-card p:not(.eyebrow) { color: var(--ink-soft); max-width: 62ch; }
.gh-card .btn-row { margin-top: 18px; }

.menu { display: none; position: relative; }
.menu summary {
  list-style: none;
  cursor: pointer;
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: var(--surface);
}
.menu summary::-webkit-details-marker { display: none; }
.menu-icon, .menu-icon::before, .menu-icon::after {
  display: block;
  width: 18px; height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform .2s, opacity .2s;
}
.menu-icon { position: relative; }
.menu-icon::before, .menu-icon::after { content: ""; position: absolute; left: 0; }
.menu-icon::before { top: -6px; }
.menu-icon::after { top: 6px; }
.menu[open] .menu-icon { background: transparent; }
.menu[open] .menu-icon::before { transform: translateY(6px) rotate(45deg); }
.menu[open] .menu-icon::after { transform: translateY(-6px) rotate(-45deg); }

.menu-panel {
  position: absolute;
  right: 0; top: calc(100% + 10px);
  width: min(320px, calc(100vw - 2 * var(--gutter)));
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-3);
  padding: 12px;
}
.menu-panel ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.menu-panel a:not(.btn) {
  display: block;
  padding: 12px 16px;
  border-radius: var(--r-md);
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  font-size: 1.1rem;
}
.menu-panel a:not(.btn):hover, .menu-panel a[aria-current="page"] { background: var(--sand); }
.menu-panel .btn { width: 100%; margin-top: 8px; }

.lang-hint { background: var(--night); color: var(--cream); font-size: .95rem; }
.lang-hint-inner { display: flex; align-items: center; justify-content: center; gap: 16px; min-height: 44px; }
.lang-hint a { color: #FFD27A; font-weight: 500; }
.lang-hint-close {
  background: none; border: 0; color: inherit; cursor: pointer;
  font-size: 1rem; padding: 6px 10px; border-radius: var(--r-pill);
}
.lang-hint-close:hover { background: var(--night-soft); }

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 12px 24px;
  border-radius: var(--r-pill);
  border: 1.5px solid transparent;
  font: inherit;
  font-weight: 500;
  font-size: 1.05rem;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: transform .15s, box-shadow .15s, background .15s, border-color .15s;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary { background: var(--bio-indigo); color: #fff; box-shadow: 0 6px 18px rgba(75, 84, 200, .28); }
.btn-primary:hover { background: var(--indigo-dark); color: #fff; box-shadow: 0 10px 24px rgba(75, 84, 200, .34); }

.btn-secondary { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn-secondary:hover { border-color: var(--ink-soft); color: var(--ink); }

.btn-amber { background: var(--bio-amber); color: var(--ink); box-shadow: 0 6px 18px rgba(255, 176, 32, .32); }
.btn-amber:hover { background: #F5A20E; color: var(--ink); }

.btn-sm { min-height: 40px; padding: 8px 18px; font-size: .98rem; }
.btn-lg { min-height: 56px; padding: 14px 30px; font-size: 1.12rem; }

.btn-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* ------------------------------------------------------------ type bits */

.lead { font-size: clamp(1.12rem, 1.8vw, 1.3rem); color: var(--ink-soft); line-height: 1.55; max-width: 62ch; }
.center .lead, .lead.center { margin-inline: auto; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  padding: 6px 14px;
  border-radius: var(--r-pill);
  font-size: .92rem;
  font-weight: 500;
  line-height: 1.2;
}

.tint-coral { background: var(--tint-coral); color: var(--coral-ink); }
.tint-amber { background: var(--tint-amber); color: var(--amber-ink); }
.tint-teal { background: var(--tint-teal); color: var(--teal-ink); }
.tint-indigo { background: var(--tint-indigo); color: var(--indigo-dark); }

.ico {
  display: inline-grid;
  place-items: center;
  flex: none;
  width: 52px; height: 52px;
  border-radius: 16px;
  font-size: 1.6rem;
  line-height: 1;
}
.ico-lg { width: 68px; height: 68px; border-radius: 20px; font-size: 2.1rem; }

.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: var(--r-pill);
  font-size: .8rem;
  font-weight: 500;
  vertical-align: 1px;
  white-space: nowrap;
}
.badge-real { background: var(--tint-teal); color: var(--teal-ink); }
.badge-illus { background: var(--tint-amber); color: var(--amber-ink); }
.badge-soon { background: var(--tint-coral); color: var(--coral-ink); }
.badge-new { background: var(--bio-amber); color: var(--ink); }

kbd {
  display: inline-block;
  min-width: 1.9em;
  padding: 1px 8px;
  border: 1px solid var(--line);
  border-bottom-width: 3px;
  border-radius: 8px;
  background: var(--surface);
  font-family: var(--font);
  font-size: .9em;
  font-weight: 500;
  line-height: 1.5;
  text-align: center;
  color: var(--ink);
}

code {
  font-family: var(--font-mono);
  font-size: .88em;
  background: var(--sand);
  padding: .12em .4em;
  border-radius: 6px;
  overflow-wrap: anywhere;
}

/* --------------------------------------------------------------- sections */

.section { padding-block: clamp(56px, 8vw, 104px); }
.section-tight { padding-block: clamp(40px, 5vw, 64px); }
.section-sand { background: var(--sand); }
.section-white { background: var(--surface); }

.section-head { margin-bottom: clamp(32px, 4vw, 52px); max-width: 760px; }
.section-head.center { text-align: center; margin-inline: auto; }

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

.hero {
  position: relative;
  padding-top: clamp(40px, 6vw, 80px);
  padding-bottom: clamp(40px, 6vw, 72px);
  isolation: isolate;
  overflow: hidden;
}
.hero::before, .page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(40% 55% at 0% 0%, rgba(255, 107, 91, .17), transparent 70%),
    radial-gradient(40% 55% at 100% 0%, rgba(255, 176, 32, .18), transparent 70%),
    radial-gradient(45% 60% at 100% 100%, rgba(31, 182, 166, .15), transparent 70%),
    radial-gradient(45% 60% at 0% 100%, rgba(75, 84, 200, .13), transparent 70%);
}

.hero-text { text-align: center; max-width: 900px; margin-inline: auto; }
.hero h1 { margin-bottom: .35em; }
.hero h1 .hl {
  background: linear-gradient(transparent 62%, rgba(255, 176, 32, .45) 62%, rgba(255, 176, 32, .45) 90%, transparent 90%);
  padding-inline: .06em;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}
.hero .lead { margin: 0 auto 28px; }
.hero .btn-row { justify-content: center; }

.trust {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 22px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  color: var(--ink-soft);
  font-size: .98rem;
}
.trust li { display: inline-flex; align-items: center; gap: 8px; }
.trust li::before {
  content: "";
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--ok) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.4l2.6 2.5L12 5.5' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 14px no-repeat;
  flex: none;
}

.hero-shot {
  margin: clamp(36px, 5vw, 60px) auto 0;
  max-width: 1120px;
}
.hero-frame { position: relative; }  /* the chips sit on the picture, never on its caption */
.hero-shot img {
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-3);
  width: 100%;
}
.hero-shot figcaption { text-align: center; color: var(--ink-soft); font-size: .95rem; margin-top: 16px; }

.float-chip {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  box-shadow: var(--shadow-2);
  font-weight: 500;
  font-size: .95rem;
  white-space: nowrap;
  animation: bob 6s ease-in-out infinite;
}
.float-chip .emoji { font-size: 1.2rem; }
.float-chip.c1 { left: -14px; top: 60%; }
.float-chip.c2 { right: -10px; top: 6%; animation-delay: -2s; }
.float-chip.c3 { right: -10px; bottom: 14%; animation-delay: -4s; }
@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }

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

.page-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(28px, 4vw, 48px) clamp(32px, 5vw, 60px);
}
.page-hero h1 { margin-bottom: .3em; max-width: 22ch; }
.page-hero .lead { margin-bottom: 0; }

.crumbs ol { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; margin: 0 0 18px; padding: 0; font-size: .93rem; color: var(--ink-soft); }
.crumbs li:not(:last-child)::after { content: "›"; margin-left: 6px; color: var(--ink-soft); }
.crumbs a { color: var(--ink-soft); text-decoration: none; }
.crumbs a:hover { color: var(--ink); text-decoration: underline; }

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

.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); }

.card, .feature {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 28px;
  box-shadow: var(--shadow-1);
}
.feature h3 { margin: 18px 0 8px; }
.feature h3 a { color: inherit; text-decoration: none; }
.feature h3 a:hover { text-decoration: underline; }
.feature p { color: var(--ink-soft); margin: 0; }
.feature p + p { margin-top: .7em; }
.feature .more { display: inline-block; margin-top: 12px; font-weight: 500; }

/* Spotlight: a picture and its words side by side. */
.spot {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}
.spot + .spot { margin-top: clamp(64px, 9vw, 120px); }
.spot.flip .spot-media { order: 2; }
.spot-text h2, .spot-text h3 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
.spot-text .lead { font-size: 1.15rem; }
.spot-media { position: relative; }
.spot-media.phone { max-width: 400px; justify-self: center; }
/* A tall screenshot shows its top: the part a spotlight talks about. */
.spot-media:not(.phone) .shot-frame img { max-height: 600px; object-fit: cover; object-position: top center; }

.checks { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 12px; }
.checks li { position: relative; padding-left: 36px; }
.checks li::before {
  content: "";
  position: absolute;
  left: 0; top: .2em;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--tint-teal) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.4l2.6 2.5L12 5.5' fill='none' stroke='%230E6E64' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 16px no-repeat;
}
.checks.no li::before {
  background: var(--tint-coral) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M5 5l6 6M11 5l-6 6' fill='none' stroke='%23B23A2C' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E") center / 16px no-repeat;
}

/* ------------------------------------------------------------ figures */

.shot, .illus { margin: 0; }
.shot-frame img {
  width: 100%;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-2);
  background: var(--surface);
}
.shot figcaption, .illus figcaption {
  margin-top: 12px;
  color: var(--ink-soft);
  font-size: .93rem;
  line-height: 1.5;
}
.prose .shot, .prose .illus { margin: 28px 0; }
.illus-frame {
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}

/* --------------------------------------------------------------- prose */

.prose { max-width: var(--narrow); }
.prose > h2 { margin-top: 2em; font-size: clamp(1.45rem, 2.6vw, 1.9rem); }
.prose > h3 { margin-top: 1.6em; }
.prose ul:not([class]), .prose ol:not([class]) { padding-left: 1.3em; margin: 0 0 1.1em; }
.prose li + li { margin-top: .35em; }
.prose li::marker { color: var(--ink-soft); }
.prose img { border-radius: var(--r-md); }

/* --------------------------------------------------------------- steps */

.steps { list-style: none; margin: 32px 0; padding: 0; counter-reset: step; }
.step {
  position: relative;
  counter-increment: step;
  padding: 0 0 36px 70px;
}
.step::before {
  content: counter(step);
  position: absolute;
  left: 0; top: -4px;
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--bio-coral);
  color: #fff;
  font-weight: 500;
  font-size: 1.3rem;
  box-shadow: 0 6px 14px rgba(255, 107, 91, .3);
}
.step:nth-child(4n+2)::before { background: var(--bio-amber); color: var(--ink); box-shadow: 0 6px 14px rgba(255, 176, 32, .3); }
.step:nth-child(4n+3)::before { background: var(--bio-teal); box-shadow: 0 6px 14px rgba(31, 182, 166, .3); }
.step:nth-child(4n+4)::before { background: var(--bio-indigo); box-shadow: 0 6px 14px rgba(75, 84, 200, .3); }
.step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 23px; top: 52px; bottom: 6px;
  border-left: 2px dashed var(--line);
}
.step h3 { font-size: 1.32rem; margin: 6px 0 12px; }
.step-body { min-width: 0; }
.step-body > :last-child { margin-bottom: 0; }
.step-body ul, .step-body ol { padding-left: 1.3em; margin: 0 0 1em; }
.step-body .shot, .step-body .illus { margin: 18px 0; }

/* ------------------------------------------------------------- callouts */

.callout {
  display: flex;
  gap: 14px;
  margin: 24px 0;
  padding: 18px 20px;
  border-radius: var(--r-md);
  background: var(--tint-teal);
  border: 1px solid rgba(31, 182, 166, .25);
}
.callout-icon { font-size: 1.35rem; line-height: 1.4; }
.callout > div { flex: 1; min-width: 0; }  /* a long command inside must not widen the page */
.callout > div > :last-child { margin-bottom: 0; }
.callout-title { font-weight: 500; margin-bottom: .3em; }
.callout-tip { background: var(--tint-indigo); border-color: rgba(75, 84, 200, .2); }
.callout-warn { background: var(--tint-amber); border-color: rgba(242, 163, 43, .35); }
.callout-danger { background: var(--tint-coral); border-color: rgba(224, 74, 63, .3); }
.callout-privacy { background: #EEEAF8; border-color: rgba(75, 84, 200, .2); }
.callout-child { background: #FFF4EC; border-color: rgba(255, 107, 91, .25); }

/* ---------------------------------------------------------------- code */

.code {
  position: relative;
  margin: 18px 0 22px;
  background: #221E1C;
  color: #F3ECE4;
  border-radius: var(--r-md);
  overflow: hidden;
}
.code-label {
  padding: 8px 18px;
  font-size: .82rem;
  color: #C9BFB5;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.code pre {
  margin: 0;
  padding: 18px 20px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: .9rem;
  line-height: 1.6;
  tab-size: 2;
}
.code code { background: none; padding: 0; color: inherit; font-size: inherit; overflow-wrap: normal; }
.code-copy {
  position: absolute;
  top: 8px; right: 8px;
  padding: 6px 12px;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, .06);
  color: #F3ECE4;
  font: inherit;
  font-size: .82rem;
  cursor: pointer;
}
.code-copy:hover { background: rgba(255, 255, 255, .14); }
.code-copy.done { background: var(--ok); border-color: var(--ok); color: #fff; }

/* -------------------------------------------------------------- tables */

.table-wrap { overflow-x: auto; margin: 22px 0; border: 1px solid var(--line); border-radius: var(--r-md); background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: .98rem; }
th, td { text-align: left; padding: 13px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
tr:last-child td { border-bottom: 0; }
thead th { background: var(--sand); font-weight: 500; }
tbody th { font-weight: 500; }

.compare td:not(:first-child), .compare th:not(:first-child) { text-align: center; }
.compare .yes { color: var(--ok); font-weight: 500; }
.compare .no { color: var(--danger); font-weight: 500; }
.compare th.us { background: var(--tint-indigo); color: var(--indigo-dark); }
.compare td.us { background: rgba(229, 231, 250, .45); }

/* --------------------------------------------------------------- guides */

.guide-title { display: flex; align-items: center; gap: 18px; }
.guide-title h1 { margin: 0; }
.guide-hero .lead { margin-top: 18px; }

.meta-chips { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 22px 0 0; padding: 0; }
.meta-chips li {
  padding: 7px 14px;
  border-radius: var(--r-pill);
  background: var(--surface);
  border: 1px solid var(--line);
  font-size: .93rem;
  color: var(--ink-soft);
}
.meta-chips strong { color: var(--ink); }

.guide-layout {
  display: grid;
  grid-template-columns: minmax(0, var(--narrow)) 300px;
  gap: 56px;
  justify-content: space-between;
  padding-bottom: 72px;
}
.guide-body { padding-top: 8px; }
.guide-aside { position: relative; }
.aside-sticky { position: sticky; top: calc(var(--header-h) + 20px); display: grid; gap: 22px; max-height: calc(100vh - var(--header-h) - 40px); overflow-y: auto; padding-bottom: 8px; }
.aside-title { font-weight: 500; margin: 0 0 8px; font-size: .95rem; color: var(--ink-soft); }
.toc ol, .aside-guides ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.toc a, .aside-guides a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 7px 12px;
  border-radius: var(--r-sm);
  color: var(--ink);
  text-decoration: none;
  font-size: .95rem;
  line-height: 1.35;
}
.toc a:hover, .aside-guides a:hover { background: var(--sand); }
.toc a.active { background: var(--tint-indigo); color: var(--indigo-dark); }
.toc-n {
  flex: none;
  display: inline-grid; place-items: center;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--sand);
  font-size: .78rem;
  font-weight: 500;
}
.toc-h2 a { font-weight: 500; }
.aside-guides a[aria-current="page"] { background: var(--surface); box-shadow: var(--shadow-1); font-weight: 500; }
.aside-guides span { font-family: var(--font-emoji); }

.guide-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  color: var(--ink);
  text-decoration: none;
  box-shadow: var(--shadow-1);
  transition: transform .15s, box-shadow .15s, border-color .15s;
  height: 100%;
}
.guide-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-2); border-color: #D9CDBF; color: var(--ink); }
.guide-card-text { display: grid; gap: 4px; }
.guide-card strong { font-size: 1.15rem; }
.guide-card-text > span:not(.guide-card-meta) { color: var(--ink-soft); line-height: 1.45; }
.guide-card-meta { font-size: .88rem; color: var(--ink-soft); margin-top: 4px; }

.guide-group + .guide-group { margin-top: 48px; }
.guide-group h2 { font-size: 1.5rem; display: flex; align-items: center; gap: 12px; }

.stuck {
  margin: 48px 0 28px;
  padding: 24px;
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px solid var(--line);
}
.stuck-title { font-weight: 500; font-size: 1.15rem; margin-bottom: .3em; }
.stuck .btn-row { margin: 14px 0 0; }
.next-guide .eyebrow { margin-bottom: 12px; }

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

.faq { display: grid; gap: 12px; }
.faq-group { margin: 48px 0 18px; font-size: 1.5rem; }
.faq-group:first-child { margin-top: 0; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: box-shadow .15s;
}
.faq-item[open] { box-shadow: var(--shadow-1); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 18px 22px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary h3 { margin: 0; font-size: 1.12rem; }
.faq-item summary::after {
  content: "";
  flex: none;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--sand) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 6l4 4 4-4' fill='none' stroke='%23221E1C' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 14px no-repeat;
  transition: transform .2s;
}
.faq-item[open] summary::after { transform: rotate(180deg); }
.faq-answer { padding: 0 22px 20px; color: var(--ink-soft); }
.faq-answer > :last-child { margin-bottom: 0; }
.faq-answer a { font-weight: 500; }

/* ---------------------------------------------------------- home bits */

.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.day {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  counter-reset: day;
}
.day li {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 22px 20px;
  box-shadow: var(--shadow-1);
}
.day time { display: inline-block; font-weight: 500; font-size: .9rem; padding: 3px 10px; border-radius: var(--r-pill); background: var(--sand); }
.day .emoji { display: block; font-size: 2rem; margin: 14px 0 6px; }
.day h3 { font-size: 1.08rem; margin: 0 0 6px; }
.day p { font-size: .95rem; color: var(--ink-soft); margin: 0; line-height: 1.5; }

.start-steps { counter-reset: s; list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.start-steps li { counter-increment: s; position: relative; padding: 30px 26px 26px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); box-shadow: var(--shadow-1); }
.start-steps li::before {
  content: counter(s);
  display: grid; place-items: center;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--night);
  color: var(--cream);
  font-weight: 500;
  font-size: 1.2rem;
  margin-bottom: 14px;
}
.start-steps h3 { margin-bottom: 6px; }
.start-steps p { color: var(--ink-soft); margin-bottom: 12px; }

.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-radius: var(--r-xl); overflow: hidden; background: var(--night); color: var(--cream); }
.principles > div { padding: 34px 30px; border-right: 1px solid rgba(255, 255, 255, .08); border-bottom: 1px solid rgba(255, 255, 255, .08); }
.principles h3 { color: #fff; margin-bottom: 8px; display: flex; align-items: center; gap: 10px; }
.principles p { color: rgba(251, 247, 242, .78); margin: 0; }
.principles .emoji { font-size: 1.5rem; }

.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 28px; }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 22px; text-align: center; }
.stat strong { display: block; font-size: clamp(1.8rem, 3.5vw, 2.4rem); line-height: 1.1; color: var(--indigo-dark); }
.stat span { color: var(--ink-soft); font-size: .95rem; }

.gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }

/* -------------------------------------------------------- features page */

.jump { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 26px 0 0; }
.jump a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 15px;
  border-radius: var(--r-pill);
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  font-size: .95rem;
}
.jump a:hover { border-color: var(--ink-soft); color: var(--ink); }
.jump .emoji { font-size: 1.05rem; }

.feat-block { padding-block: clamp(52px, 7vw, 92px); }
.feat-block:nth-of-type(even) { background: var(--surface); }
.feat-block .spot { margin-bottom: 8px; }

.minis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: clamp(28px, 4vw, 44px); }
.minis:has(> :nth-child(4):last-child) { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1100px) { .minis:has(> :nth-child(4):last-child) { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 960px) { .minis { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .minis, .minis:has(> :nth-child(4):last-child) { grid-template-columns: 1fr; } }
.mini { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-md); padding: 20px 22px; }
.feat-block:nth-of-type(even) .mini { background: var(--bg); }
.mini h3 { font-size: 1.06rem; margin: 0 0 6px; display: flex; gap: 10px; align-items: center; }
.mini h3 .emoji { font-size: 1.3rem; }
.mini p { margin: 0; color: var(--ink-soft); font-size: .97rem; line-height: 1.55; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 16px 0 0; }
.chips li { padding: 6px 13px; border-radius: var(--r-pill); background: var(--surface); border: 1px solid var(--line); font-size: .93rem; }
.feat-block:nth-of-type(even) .chips li { background: var(--bg); }
.chips-title { font-weight: 500; margin: 28px 0 0; }

.crop-top .shot-frame img { max-height: 560px; object-fit: cover; object-position: top center; }

.model-table td:nth-child(n+2), .model-table th:nth-child(n+2) { white-space: nowrap; }

/* ------------------------------------------------------- download page */

.dl-card .file { font-family: var(--font-mono); font-size: .9rem; background: var(--sand); padding: 4px 10px; border-radius: 8px; word-break: break-all; }
.dl-card p { color: var(--ink-soft); }
.dl-card .btn-row { margin-top: 22px; }
.dl-side { display: grid; gap: 22px; align-content: start; }
.dl-side .dl-card { box-shadow: var(--shadow-1); }
.dl-side h2 { font-size: 1.35rem; margin-top: 12px; }

.picker { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.picker a {
  display: grid;
  gap: 6px;
  padding: 22px;
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-1);
  color: var(--ink);
  text-decoration: none;
  transition: transform .15s, box-shadow .15s;
}
.picker a:hover { transform: translateY(-3px); box-shadow: var(--shadow-2); color: var(--ink); }
.picker .emoji { font-size: 2rem; }
.picker strong { font-size: 1.08rem; line-height: 1.3; }
.picker span:last-child { color: var(--link); font-weight: 500; font-size: .95rem; }
@media (max-width: 960px) { .picker { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .picker { grid-template-columns: 1fr; } }

.dl-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 22px; align-items: stretch; }
.dl-card { position: relative; padding: 34px; border-radius: var(--r-xl); background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow-2); }
.dl-card.main { border: 2px solid var(--bio-indigo); }
.dl-card h2 { font-size: 1.7rem; margin-top: 16px; }
.dl-meta { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 20px; padding: 0; list-style: none; }
.dl-meta li { background: var(--sand); padding: 5px 12px; border-radius: var(--r-pill); font-size: .92rem; }
.dl-card .btn-row { margin-top: 22px; }

/* ------------------------------------------------------ illustrations */

/* A drawn Windows-like dialog, an installer screen, a disk bar, a boot menu.
 * Drawn in HTML so they stay sharp, light and translatable. */
.mock { font-family: "Segoe UI", system-ui, sans-serif; font-size: .92rem; color: #1b1b1b; }
.mock-win { background: #f3f3f3; }
.mock-titlebar { display: flex; align-items: center; justify-content: space-between; padding: 8px 14px; background: #fff; border-bottom: 1px solid #e5e5e5; font-size: .85rem; }
.mock-titlebar .dots { display: flex; gap: 14px; color: #555; letter-spacing: 2px; }
.mock-body { padding: 18px; }

.disk { display: flex; height: 64px; border-radius: 10px; overflow: hidden; border: 1px solid #c9c9c9; background: #fff; }
.disk > div { display: flex; flex-direction: column; justify-content: center; padding: 6px 10px; font-size: .8rem; line-height: 1.25; border-right: 1px solid #c9c9c9; min-width: 0; }
.disk > div:last-child { border-right: 0; }
.disk b { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.disk .efi { flex: .5; background: #eef3fb; border-top: 6px solid #2b6cc4; }
.disk .win { flex: 4; background: #fff; border-top: 6px solid #2b6cc4; }
.disk .free { flex: 2; background: repeating-linear-gradient(135deg, #fff, #fff 6px, #ececec 6px, #ececec 12px); border-top: 6px solid #111; }
.disk .bk { flex: 2; background: #fff5e6; border-top: 6px solid var(--bio-amber); }
.disk .rec { flex: .5; background: #eef3fb; border-top: 6px solid #2b6cc4; }
.disk-legend { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 10px; font-size: .8rem; color: #444; }
.disk-legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; vertical-align: -1px; margin-right: 5px; }
.disk-arrow { text-align: center; font-size: 1.4rem; margin: 10px 0; color: #777; }

.mock-dialog { max-width: 440px; margin: 0 auto; background: #fff; border: 1px solid #d0d0d0; border-radius: 8px; box-shadow: 0 10px 30px rgba(0, 0, 0, .12); overflow: hidden; }
.mock-dialog .mock-body p { margin: 0 0 10px; }
.mock-field { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 7px 0; border-bottom: 1px solid #eee; }
.mock-field:last-of-type { border-bottom: 0; }
.mock-input { min-width: 92px; padding: 4px 8px; border: 1px solid #8a8a8a; border-radius: 4px; text-align: right; font-variant-numeric: tabular-nums; background: #fff; }
.mock-input.hl { outline: 3px solid var(--bio-amber); outline-offset: 2px; }
.mock-buttons { display: flex; justify-content: flex-end; gap: 8px; padding: 12px 18px; background: #f7f7f7; border-top: 1px solid #e5e5e5; }
.mock-btn { padding: 5px 18px; border: 1px solid #b5b5b5; border-radius: 4px; background: #fdfdfd; font-size: .85rem; }
.mock-btn.primary { background: #0067c0; color: #fff; border-color: #0067c0; }

.mock-check { display: flex; align-items: flex-start; gap: 10px; padding: 6px 0; }
.mock-box { flex: none; width: 16px; height: 16px; margin-top: 2px; border: 1.5px solid #555; border-radius: 3px; background: #fff; }
.mock-box.on { background: #0067c0; border-color: #0067c0; position: relative; }
.mock-box.on::after { content: ""; position: absolute; left: 4px; top: 0; width: 5px; height: 10px; border: solid #fff; border-width: 0 2px 2px 0; transform: rotate(45deg); }
.mock-strike { text-decoration: line-through; text-decoration-color: var(--danger); text-decoration-thickness: 2px; }

.boot {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--night) url("../img/illus/grub.webp") center / cover no-repeat;
  color: var(--cream);
  font-family: var(--font);
  display: grid;
  grid-template-rows: 38% 1fr auto;
  justify-items: center;
}
.boot-logo { align-self: end; width: 26%; max-width: 260px; margin-bottom: 4%; }
.boot-menu { list-style: none; margin: 0; padding: 0; width: min(78%, 520px); display: grid; gap: 4px; align-content: start; font-size: clamp(.72rem, 1.9vw, 1.12rem); }
.boot-menu li { padding: .42em 1.1em; border-radius: var(--r-pill); }
.boot-menu li.sel { background: var(--bio-amber); color: var(--night); font-weight: 500; }
.boot-foot { padding-bottom: 4%; font-size: clamp(.6rem, 1.4vw, .85rem); opacity: .75; text-align: center; }

.bios {
  background: #1d2a6b;
  color: #e9edff;
  font-family: var(--font-mono);
  font-size: clamp(.68rem, 1.7vw, .88rem);
  padding: 22px;
  aspect-ratio: 16 / 8;
  display: grid;
  align-content: center;
  justify-items: center;
}
.bios-box { border: 2px solid #c8d0ff; padding: 14px 18px; min-width: min(90%, 420px); background: #24337f; }
.bios-box p { margin: 0 0 10px; text-align: center; color: #fff; }
.bios-box ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.bios-box li { padding: 2px 8px; }
.bios-box li.sel { background: #e9edff; color: #1d2a6b; }
.bios-hint { margin-top: 12px; opacity: .8; }

.di {
  background: #fff;
  font-family: "Cantarell", "Noto Sans", system-ui, sans-serif;
  font-size: clamp(.7rem, 1.6vw, .9rem);
  color: #2e3436;
}
.di-banner { display: block; width: 100%; height: auto; }
.di-body { padding: 18px 22px; }
.di-title { font-weight: 600; margin: 0 0 8px; font-size: 1.05em; }
.di-list { border: 1px solid #c0c0c0; margin: 12px 0; }
.di-list div { padding: 5px 10px; }
.di-list div.sel { background: #3465a4; color: #fff; }
.di-foot { display: flex; justify-content: space-between; padding: 10px 22px; border-top: 1px solid #ddd; background: #f6f6f6; }
.di-btn { padding: 4px 14px; border: 1px solid #aaa; border-radius: 4px; background: #fff; }

.phone-mock {
  max-width: 300px;
  margin: 0 auto;
  border: 10px solid #1d1b1a;
  border-radius: 38px;
  background: var(--bg);
  overflow: hidden;
  box-shadow: var(--shadow-2);
}

.usb-flow { display: flex; align-items: center; justify-content: center; gap: clamp(10px, 3vw, 28px); padding: 28px 16px; flex-wrap: wrap; font-family: var(--font); }
.usb-flow .node { display: grid; justify-items: center; gap: 8px; text-align: center; font-size: .95rem; max-width: 140px; }
.usb-flow .node .emoji { font-size: 2.6rem; width: 84px; height: 84px; display: grid; place-items: center; border-radius: 24px; }
.usb-flow .arrow { font-size: 1.6rem; color: var(--ink-soft); }

/* ------------------------------------------------- install guides' drawings */

/* balenaEtcher's three steps, on its dark window. */
.etcher {
  background: #2f3542;
  color: #f1f2f6;
  font-family: "Segoe UI", system-ui, sans-serif;
  padding: 26px 18px 22px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  text-align: center;
}
.etcher-step { display: grid; justify-items: center; gap: 10px; font-size: .85rem; }
.etcher-step .emoji { font-size: 1.9rem; line-height: 1; }
.etcher-btn {
  display: inline-block;
  padding: 7px 14px;
  border-radius: 24px;
  background: #4d5c74;
  color: #fff;
  font-weight: 600;
  font-size: .82rem;
  white-space: nowrap;
}
.etcher-step.on .etcher-btn { background: #00aeef; }
.etcher-note { color: #a4b0be; font-size: .75rem; }

/* Radio buttons in a drawn dialog. */
.mock-radio { display: flex; align-items: flex-start; gap: 10px; padding: 6px 0; }
.mock-dot { flex: none; width: 16px; height: 16px; margin-top: 2px; border: 1.5px solid #555; border-radius: 50%; background: #fff; position: relative; }
.mock-dot.on { border-color: #0067c0; }
.mock-dot.on::after { content: ""; position: absolute; inset: 3px; border-radius: 50%; background: #0067c0; }
.mock-hl { outline: 3px solid var(--bio-amber); outline-offset: 3px; border-radius: 4px; }
.mock-small { font-size: .8rem; color: #555; }
.mock-section { font-weight: 600; margin: 4px 0 6px; }

/* A two-column table in a drawn window (System Information). */
.mock-table { width: 100%; border-collapse: collapse; font-size: .85rem; background: #fff; }
.mock-table th, .mock-table td { padding: 5px 10px; border: 1px solid #e3e3e3; text-align: left; font-weight: 400; }
.mock-table thead th { background: #f3f3f3; font-weight: 600; }
.mock-table tr.hl td { background: #fff4d6; font-weight: 600; }

/* A row of disk bars with a title above each. */
.disk-row + .disk-row { margin-top: 18px; }
.disk-title { font-size: .82rem; font-weight: 600; margin: 0 0 6px; color: #333; }
.disk .del { flex: 2; background: #fde3df; border-top: 6px solid var(--danger); }
.disk .swap { flex: .7; background: #fff5e6; border-top: 6px solid var(--bio-amber); }

/* The stick's boot menu: white items on the indigo, as live-build draws them. */
.boot.stick .boot-menu li { border-radius: 6px; }
.boot.stick .boot-menu li.sel { background: rgba(251, 247, 242, .92); color: var(--night); }
.boot > .boot-space { display: block; }
.boot .boot-menu { font-size: clamp(.68rem, 1.6vw, 1rem); }

/* The firmware's boot menu. */
.bios-box li { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* Three "which case are you?" cards on the uninstall guide. */
.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 22px 0 8px; }
.cases a {
  display: grid;
  gap: 6px;
  padding: 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  text-decoration: none;
  box-shadow: var(--shadow-1);
  line-height: 1.4;
}
.cases a:hover { border-color: #D9CDBF; box-shadow: var(--shadow-2); }
.cases .emoji { font-size: 1.6rem; }
.cases strong { font-size: 1.05rem; }
.cases span:last-child { color: var(--ink-soft); font-size: .93rem; }

/* VirtualBox's settings, as a compact table. */
.settings-table td:first-child { white-space: nowrap; }

@media (max-width: 640px) {
  .etcher { grid-template-columns: 1fr; gap: 18px; }
  .cases { grid-template-columns: 1fr; }
  .bios { aspect-ratio: auto; padding: 18px 12px; }
  .bios-box { min-width: 0; width: 100%; padding: 10px; }
  .mock-field { flex-wrap: wrap; }
  .disk > div { padding: 4px 6px; font-size: .7rem; }
  .disk-legend { font-size: .72rem; }
  .settings-table td:first-child { white-space: normal; }
}

/* ------------------------------------- privacy, FAQ, support and about pages */

/* A table row that names the group of rows below it. */
.row-group {
  background: var(--sand);
  color: var(--ink-soft);
  font-size: .9rem;
  letter-spacing: .01em;
}

/* Support and about: cards that are links. */
.help-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
}
.help-card h3 { margin: 14px 0 4px; }
.help-card p { color: var(--ink-soft); margin: 0; }
.help-card .btn-row { margin-top: auto; padding-top: 16px; }

/* The developer card on the about page. */
.person {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 22px;
  align-items: center;
}
.person-badge {
  width: 84px; height: 84px;
  display: grid; place-items: center;
  border-radius: 24px;
  background: var(--tint-indigo);
  color: var(--indigo-dark);
  font-size: 1.9rem;
  font-weight: 500;
}
.person h3 { margin: 0 0 4px; }
.person p { margin: 0 0 6px; color: var(--ink-soft); }
.person .btn-row { margin-top: 10px; }

/* Press kit: the brand colours. */
.swatches { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; margin: 14px 0 0; padding: 0; }
.swatches li { display: flex; align-items: center; gap: 8px; font-size: .9rem; color: var(--ink-soft); }
.swatches i { display: inline-block; width: 26px; height: 26px; border-radius: 8px; border: 1px solid rgba(34, 30, 28, .12); }

.built-on { columns: 2 220px; column-gap: 32px; padding-left: 1.2em; }
.built-on li { break-inside: avoid; }

.ask-more { text-align: center; margin-top: 40px; }

.after-cards { margin-top: clamp(40px, 5vw, 64px); }
.retention tr > :nth-child(2) { white-space: nowrap; }

.person + p { margin-top: 16px; }
.person-badge img { width: 34px; height: auto; }

.press-logos { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 18px; }
.press-logos a {
  display: grid;
  justify-items: center;
  align-content: end;
  gap: 10px;
  padding: 18px 20px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--bg);
  color: var(--ink-soft);
  text-decoration: none;
  font-size: .88rem;
}
.press-logos a:hover { border-color: var(--ink-soft); color: var(--ink); }
.press-logos img { height: 110px; width: auto; }
.ask-more h2 { font-size: 1.5rem; margin-bottom: .4em; }
.ask-more p { color: var(--ink-soft); }
.ask-more .btn-row { justify-content: center; }

@media (max-width: 640px) {
  .person { grid-template-columns: 1fr; }
}

/* ----------------------------------------------------------------- tabs */

.tabs-nav { display: flex; flex-wrap: wrap; gap: 6px; margin: 20px 0 0; padding: 6px; background: var(--sand); border-radius: var(--r-pill); width: fit-content; max-width: 100%; }
.tabs-nav button {
  border: 0;
  background: none;
  font: inherit;
  font-weight: 500;
  padding: 8px 18px;
  border-radius: var(--r-pill);
  cursor: pointer;
  color: var(--ink-soft);
}
.tabs-nav button[aria-selected="true"] { background: var(--surface); color: var(--ink); box-shadow: var(--shadow-1); }
.tabs.js .tab-panel > .tab-title { display: none; }
.tab-panel { padding-top: 6px; }
.tabs:not(.js) .tab-panel + .tab-panel { margin-top: 28px; }

/* ------------------------------------------------------------ CTA band */

.cta-band { padding-block: 24px clamp(56px, 8vw, 96px); }
.cta-card {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(20px, 4vw, 48px);
  align-items: center;
  padding: clamp(28px, 5vw, 56px);
  border-radius: var(--r-xl);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-2);
}
.cta-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(50% 80% at 0% 0%, rgba(255, 107, 91, .14), transparent 70%),
    radial-gradient(50% 80% at 100% 100%, rgba(31, 182, 166, .14), transparent 70%),
    radial-gradient(40% 70% at 100% 0%, rgba(255, 176, 32, .14), transparent 70%);
}
.cta-kite { width: clamp(70px, 10vw, 120px); height: auto; transform: rotate(-6deg); }
.cta-card h2 { margin-bottom: .3em; }
.cta-card p { color: var(--ink-soft); font-size: 1.15rem; }

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

.site-footer { background: var(--night); color: rgba(251, 247, 242, .78); padding-top: 64px; font-size: .98rem; }
.site-footer a { color: var(--cream); text-decoration: none; }
.site-footer a:hover { color: #FFD27A; text-decoration: underline; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(4, 1fr); gap: 36px; padding-bottom: 44px; }
.footer-brand img { width: 156px; height: 48px; margin-bottom: 16px; }
.footer-brand p { max-width: 34ch; }
.footer-version { font-size: .9rem; opacity: .75; }
.site-footer h2 { color: #fff; font-size: 1rem; margin-bottom: 14px; letter-spacing: .01em; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 28px;
  padding-block: 22px 28px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  font-size: .9rem;
}
.footer-bottom p { margin: 0; }
.footer-privacy span { font-family: var(--font-emoji); }

/* ------------------------------------------------------------------ 404 */

.notfound { text-align: center; padding-block: clamp(56px, 10vw, 120px); }
.notfound img { margin: 0 auto 24px; width: 120px; transform: rotate(-10deg); }
.notfound .btn-row { justify-content: center; margin-top: 26px; }
.notfound .lang-block + .lang-block { margin-top: 36px; padding-top: 30px; border-top: 1px solid var(--line); }

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

@media (max-width: 1100px) {
  .nav a { padding: 8px 10px; }
  .gh-link-text { display: none; }
  .gh-link { width: 40px; padding: 0; justify-content: center; }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .day { grid-template-columns: repeat(3, 1fr); }
  .guide-layout { grid-template-columns: minmax(0, 1fr) 260px; gap: 36px; }
}

@media (max-width: 960px) {
  .nav, .header-cta, .gh-link { display: none; }
  .menu { display: block; }
  .header-actions { margin-left: auto; }
  .spot { grid-template-columns: minmax(0, 1fr); }
  .spot.flip .spot-media { order: 0; }
  .why-grid { grid-template-columns: 1fr 1fr; }
  .start-steps { grid-template-columns: 1fr; }
  .principles { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .gallery { grid-template-columns: 1fr; }
  .dl-grid { grid-template-columns: minmax(0, 1fr); }
  .guide-layout { grid-template-columns: minmax(0, 1fr); }
  .guide-aside { display: none; }
  .float-chip.c1 { left: 4px; }
  .float-chip.c2, .float-chip.c3 { right: 4px; }
}

@media (max-width: 640px) {
  :root { --gutter: 16px; --header-h: 64px; }
  body { font-size: 1.02rem; }
  .brand img { width: 130px; height: 40px; }
  .why-grid { grid-template-columns: 1fr; }
  .day { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .card, .feature, .dl-card { padding: 22px; }
  .step { padding-left: 58px; }
  .step::before { width: 42px; height: 42px; font-size: 1.15rem; }
  .step:not(:last-child)::after { left: 20px; top: 46px; }
  .cta-card { grid-template-columns: 1fr; text-align: left; }
  .cta-kite { display: none; }
  .gh-card { grid-template-columns: minmax(0, 1fr); }
  .gh-card-mark { width: 72px; height: 72px; border-radius: 22px; }
  .gh-card-mark .gh-mark { width: 38px; height: 38px; }
  .float-chip { display: none; }
  .btn-lg { width: 100%; }
  .hero .btn-row .btn { width: 100%; }
  .guide-title { align-items: flex-start; }
  .ico-lg { width: 56px; height: 56px; font-size: 1.7rem; }
  .lang-switch { padding: 8px 10px; }
  .faq-item summary { padding: 16px 18px; }
  .faq-answer { padding: 0 18px 18px; }
  .stat-row { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 400px) {
  .day { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

@media print {
  .site-header, .site-footer, .cta-band, .guide-aside, .code-copy, .lang-hint, .stuck, .next-guide { display: none !important; }
  body { background: #fff; font-size: 11pt; }
  .step::before { box-shadow: none; }
  a { color: inherit; }
  .prose a[href^="http"]::after { content: " (" attr(href) ")"; font-size: .85em; color: #555; }
}