:root {
  /* Raw palette sampled from the official Steam header visual used as the brand baseline. */
  --raw-abyss: #050602;
  --raw-canopy: #394b22;
  --raw-moss: #527578;
  --raw-sand: #bf9036;
  --raw-dust: #754a23;
  --raw-ember: #80d0ea;
  --raw-water: #7aaeb6;
  --raw-spark: #f5ee28;
  --raw-mist: #eef5ee;
  --raw-line: #9aab9d;
  --raw-white: #fffef8;
  --raw-black-alpha: rgba(5, 6, 2, 0.78);
  --raw-shadow-alpha: rgba(5, 6, 2, 0.22);
  --raw-grid-alpha: rgba(128, 208, 234, 0.12);
  --raw-mist-alpha: rgba(238, 245, 238, 0.92);
  --raw-clear: transparent;

  /* Derived role tokens: only same-hue light/dark/alpha adjustments. */
  --c-ink: var(--raw-abyss);
  --c-ink-soft: var(--raw-canopy);
  --c-page: var(--raw-mist);
  --c-surface: var(--raw-white);
  --c-surface-strong: var(--raw-sand);
  --c-border: var(--raw-line);
  --c-footer: var(--raw-abyss);
  --c-footer-text: var(--raw-mist);
  --c-accent: var(--raw-dust);
  --c-accent-text: var(--raw-white);
  --c-focus: var(--raw-spark);
  --c-verified: var(--raw-canopy);
  --c-bounded: var(--raw-dust);
  /* Same-hue dark derivative of the official header's ember blue (#80d0ea).
     It keeps small COMMUNITY evidence labels legible on both light surfaces. */
  --c-community: #0e5368;
  --shadow-card: 0 16px 40px var(--raw-shadow-alpha);
  --font-display: Impact, Haettenschweiler, "Arial Narrow Bold", sans-serif;
  --font-body: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-code: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 18px;
  --page-width: 1180px;
}

* { box-sizing: border-box; }

html { color-scheme: light; scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  color: var(--c-ink);
  background: var(--c-page);
  font-family: var(--font-body);
  line-height: 1.65;
}

a { color: inherit; text-underline-offset: 0.22em; }
a:hover { color: var(--c-accent); }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--c-focus); outline-offset: 4px; }

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.75rem 1rem;
  transform: translateY(-170%);
  background: var(--c-ink);
  color: var(--c-accent-text);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  z-index: 30;
  top: 0;
  border-bottom: 1px solid var(--c-border);
  background: var(--raw-mist-alpha);
  backdrop-filter: blur(14px);
}

.nav-shell, .page-shell, .footer-inner {
  width: min(var(--page-width), calc(100% - 40px));
  margin-inline: auto;
}

.nav-shell {
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

.brand { display: inline-flex; align-items: center; gap: 0.75rem; text-decoration: none; }
.brand > span:last-child { display: grid; line-height: 1; }
.brand strong { font-family: var(--font-display); font-size: 1.25rem; letter-spacing: 0.06em; }
.brand small { margin-top: 0.3rem; font: 700 0.62rem/1 var(--font-code); letter-spacing: 0.15em; }

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3px;
  padding: 5px;
  border: 2px solid var(--c-ink);
  background: var(--c-surface-strong);
  box-shadow: 5px 5px 0 var(--c-ink-soft);
}
.brand-mark i { display: block; background: var(--c-accent); }
.brand-mark i:nth-child(2), .brand-mark i:nth-child(3) { background: var(--c-ink-soft); }

.desktop-nav { display: flex; align-items: center; gap: 1.2rem; margin-left: auto; }
.desktop-nav a { min-height: 44px; display: inline-flex; align-items: center; font-size: 0.84rem; font-weight: 800; text-decoration: none; }
.desktop-nav a[aria-current="page"] { color: var(--c-accent); box-shadow: inset 0 -3px 0 var(--c-accent); }
.header-cta { min-height: 44px; display: inline-flex; align-items: center; padding: 0.45rem 0.9rem; border: 2px solid var(--c-ink); background: var(--c-ink); color: var(--c-accent-text); font-weight: 850; text-decoration: none; }
.header-cta:hover { border-color: var(--c-accent); background: var(--c-accent); color: var(--c-accent-text); }
.mobile-menu { display: none; margin-left: auto; }

.hero {
  position: relative;
  min-height: min(760px, calc(100vh - 96px));
  display: grid;
  place-items: center;
  isolation: isolate;
  overflow: hidden;
  color: var(--c-footer-text);
  background:
    linear-gradient(112deg, var(--raw-black-alpha) 0 52%, var(--raw-clear) 76%),
    linear-gradient(180deg, var(--raw-clear), var(--raw-black-alpha)),
    var(--c-ink-soft);
}

.home-hero {
  background:
    linear-gradient(112deg, var(--raw-black-alpha) 0 52%, var(--raw-clear) 76%),
    linear-gradient(180deg, var(--raw-clear), var(--raw-black-alpha)),
    url('./media/official/screenshot-1.jpg') center / cover no-repeat,
    var(--c-ink-soft);
}

.hero::before {
  content: "";
  position: absolute;
  z-index: -2;
  inset: 0;
  background:
    linear-gradient(var(--raw-grid-alpha) 1px, var(--raw-clear) 1px),
    linear-gradient(90deg, var(--raw-grid-alpha) 1px, var(--raw-clear) 1px);
  background-size: 34px 34px;
}

.hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  width: min(56vw, 790px);
  aspect-ratio: 1;
  right: -7vw;
  bottom: -46%;
  border: 64px solid var(--raw-moss);
  border-radius: 50%;
  box-shadow: 0 0 0 42px var(--raw-sand), 0 0 0 86px var(--raw-ember);
  opacity: 0.38;
}

.inner-hero { min-height: 620px; }
.hero-copy { width: min(var(--page-width), calc(100% - 40px)); margin-inline: auto; padding: clamp(2.4rem, 5vw, 4.2rem) 0; }
.section-kicker { margin: 0 0 0.75rem; color: var(--c-accent); font: 800 0.72rem/1.4 var(--font-code); letter-spacing: 0.14em; text-transform: uppercase; }
h1, h2, h3, p { overflow-wrap: anywhere; }
h1, h2 { margin: 0; font-family: var(--font-display); font-weight: 500; line-height: 0.94; letter-spacing: 0.015em; text-transform: uppercase; text-wrap: balance; }
h1 { max-width: 920px; font-size: clamp(3.1rem, 6.5vw, 6rem); }
.inner-hero h1 { max-width: 980px; font-size: clamp(2.9rem, 6vw, 5.4rem); }
h2 { font-size: clamp(2.4rem, 5vw, 4.6rem); }
h3 { margin: 0; font-size: 1.05rem; line-height: 1.35; }
.lede { max-width: 760px; margin: 1.05rem 0 0; color: var(--c-footer-text); font-size: clamp(1.05rem, 1.8vw, 1.3rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.35rem; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 0.7rem 1.15rem; border: 2px solid var(--c-footer-text); font-weight: 850; text-decoration: none; }
.button.primary { border-color: var(--c-accent); background: var(--c-accent); color: var(--c-accent-text); }
.button.secondary { background: var(--raw-clear); color: inherit; }
.button:hover { border-color: var(--c-focus); background: var(--c-focus); color: var(--c-ink); }

.fact-strip { max-width: 900px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 2rem; border: 1px solid var(--raw-sand); background: var(--raw-black-alpha); }
.fact-strip > div { min-width: 0; padding: 0.8rem 1rem; border-right: 1px solid var(--raw-sand); }
.fact-strip > div:last-child { border-right: 0; }
.fact-strip span { display: block; color: var(--c-focus); font: 700 0.65rem/1.3 var(--font-code); letter-spacing: 0.08em; text-transform: uppercase; }
.fact-strip strong { display: block; margin-top: 0.2rem; font-size: 0.95rem; }

.hero-machine { position: absolute; right: 7%; bottom: 9%; width: min(30vw, 390px); height: 230px; opacity: 0.58; }
.hopper { position: absolute; right: 5%; top: 0; width: 46%; height: 44%; border: 12px solid var(--c-ink); border-top-width: 24px; background: var(--c-surface-strong); transform: skewX(-8deg); }
.belt { position: absolute; right: 0; bottom: 18%; width: 92%; height: 28%; border: 12px solid var(--c-ink); background: repeating-linear-gradient(90deg, var(--c-ink-soft) 0 22px, var(--c-surface-strong) 22px 32px); }
.ore { position: absolute; z-index: 2; width: 24px; height: 24px; background: var(--c-accent); box-shadow: 0 0 0 5px var(--c-ink); }
.ore.a { right: 57%; bottom: 30%; }.ore.b { right: 36%; bottom: 30%; background: var(--c-focus); }.ore.c { right: 16%; bottom: 30%; background: var(--raw-moss); }

.page-shell { padding: 6rem 0 0; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 0.65rem; align-items: center; margin-bottom: 3rem; font-size: 0.86rem; }
.breadcrumbs a { min-height: 44px; display: inline-flex; align-items: center; font-weight: 800; }
.definition-band, .coverage-band { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(2rem, 7vw, 6rem); padding: clamp(2rem, 5vw, 4rem); border: 1px solid var(--c-border); background: var(--c-surface-strong); }
.definition-band p, .coverage-band p { margin: 0; }
.level-note { margin-top: 1rem !important; color: var(--c-community); font: 750 0.73rem/1.5 var(--font-code); letter-spacing: 0.03em; text-transform: uppercase; }
.section-heading { display: grid; grid-template-columns: 1fr minmax(260px, 0.45fr); gap: 2rem; align-items: end; margin-bottom: 2rem; }
.section-heading > p { margin: 0; color: var(--c-ink-soft); }
.answers-section, .tasks-section, .faq-section, .sources-section { padding-top: 7rem; }
.answer-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border: 1px solid var(--c-border); background: var(--c-border); gap: 1px; }
.answer-card { position: relative; min-width: 0; min-height: 255px; padding: clamp(1.5rem, 4vw, 2.6rem); background: var(--c-surface); }
.card-code { color: var(--c-accent); font: 800 0.75rem/1 var(--font-code); }
.answer-card h3 { margin: 2rem 0 0.8rem; font-family: var(--font-display); font-size: clamp(1.7rem, 3vw, 2.6rem); font-weight: 500; text-transform: uppercase; }
.answer-card p { color: var(--c-ink-soft); }
.answer-card a { min-height: 44px; display: inline-flex; align-items: center; margin-top: 0.75rem; font-weight: 850; }

.task-group { display: grid; grid-template-columns: 250px 1fr; border-top: 1px solid var(--c-border); padding: 2rem 0; }
.group-head { display: flex; gap: 1rem; align-items: start; padding-right: 1.5rem; }
.group-head > span { color: var(--c-accent); font: 800 0.8rem/1.3 var(--font-code); }
.group-head h3 { font-family: var(--font-display); font-size: 1.7rem; font-weight: 500; text-transform: uppercase; }
.task-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.75rem; }
.task-card { min-width: 0; min-height: 150px; display: grid; grid-template-columns: 1fr auto; grid-template-rows: auto 1fr; gap: 0.5rem; padding: 1.2rem; border: 1px solid var(--c-border); background: var(--c-surface); text-decoration: none; }
.task-card span { grid-column: 1 / -1; color: var(--c-ink-soft); font-size: 0.9rem; }
.task-card b { color: var(--c-accent); }
.task-card:hover { border-color: var(--c-accent); box-shadow: var(--shadow-card); transform: translateY(-2px); }

.coverage-band { margin-top: 5rem; background: var(--c-ink-soft); color: var(--c-footer-text); }
.evidence-legend { display: grid; gap: 1px; background: var(--c-border); }
.evidence-legend p { display: grid; grid-template-columns: 120px 1fr; gap: 0.75rem; padding: 0.8rem; background: var(--c-ink); }
.evidence-legend strong { color: var(--c-focus); font-family: var(--font-code); }

.content-stack { border-top: 1px solid var(--c-border); }
.content-block { display: grid; grid-template-columns: 100px minmax(0, 1fr); gap: clamp(1.5rem, 5vw, 4rem); padding: clamp(3rem, 7vw, 6rem) 0; border-bottom: 1px solid var(--c-border); }
.content-block > div:last-child { min-width: 0; }
.block-index { color: var(--c-accent); font: 800 clamp(1.5rem, 4vw, 3rem)/1 var(--font-code); }
.content-block h2 { max-width: 900px; }
.content-block p { max-width: 820px; }
.content-block p, .content-block ul, .content-block ol { color: var(--c-ink-soft); }
.steps, .check-list { display: grid; gap: 0.75rem; margin: 1.5rem 0 0; padding-left: 1.3rem; }
.steps li, .check-list li { padding-left: 0.35rem; }
.steps.compact { grid-template-columns: repeat(2, minmax(0, 1fr)); list-style-position: inside; padding: 0; }
.steps.compact li { padding: 1rem; border: 1px solid var(--c-border); background: var(--c-surface); }
.flow-row { display: flex; flex-wrap: wrap; gap: 0.7rem; align-items: center; margin: 1.5rem 0; }
.flow-row span { padding: 0.75rem 1rem; border: 2px solid var(--c-ink); background: var(--c-surface-strong); font-weight: 850; }
.flow-row b { color: var(--c-accent); }
.choice-grid, .metric-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; margin-top: 1.5rem; }
.choice, .metric-grid > div { min-width: 0; display: grid; gap: 0.35rem; padding: 1.1rem; border: 1px solid var(--c-border); background: var(--c-surface); text-decoration: none; }
.choice span, .metric-grid span { color: var(--c-ink-soft); font-size: 0.9rem; }
.fact-callout { display: grid; grid-template-columns: 1fr 1fr; max-width: 520px; margin-top: 1.5rem; border: 1px solid var(--c-border); }
.fact-callout > * { padding: 0.8rem; border-bottom: 1px solid var(--c-border); }
.fact-callout > :nth-last-child(-n + 2) { border-bottom: 0; }
.language-list { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 1px; padding: 1px; list-style: none; background: var(--c-border); }
.language-list li { padding: 0.8rem; background: var(--c-surface); text-align: center; }
.comparison-table { min-width: 720px; display: grid; gap: 1px; margin-top: 1.5rem; background: var(--c-border); }
.comparison-table > div { display: grid; grid-template-columns: 0.65fr 1fr 1.35fr; gap: 1px; }
.comparison-table span, .comparison-table strong { padding: 0.9rem; background: var(--c-surface); }
.content-block:has(.comparison-table) > div:last-child { overflow-x: auto; }
.text-cta { min-height: 48px; display: inline-flex; align-items: center; padding: 0.65rem 1rem; background: var(--c-accent); color: var(--c-accent-text); font-weight: 850; text-decoration: none; }

.task-figure { max-width: 920px; display: flex; flex-direction: column; margin: 2rem 0 0; border: 1px solid var(--c-border); background: var(--c-surface); box-shadow: var(--shadow-card); }
.task-figure img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.task-figure figcaption { padding: 1rem 1.15rem; color: var(--c-ink-soft); font-size: 0.9rem; line-height: 1.55; }
.task-figure figcaption strong { color: var(--c-bounded); }

.media-section { padding-top: 7rem; }
.official-gallery { display: grid; grid-template-columns: 1.2fr repeat(2, minmax(0, 0.9fr)); gap: 1rem; }
.official-gallery figure { display: flex; flex-direction: column; min-width: 0; margin: 0; border: 1px solid var(--c-border); background: var(--c-surface); }
.official-gallery img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.official-gallery figcaption { padding: 0.8rem 1rem; color: var(--c-ink-soft); font-size: 0.82rem; line-height: 1.5; }
.video-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.video-card { position: relative; display: grid; gap: 0.5rem; padding: 0 0 1rem; overflow: hidden; border: 1px solid var(--c-border); background: var(--c-surface); color: var(--c-ink); text-decoration: none; }
.video-card img { width: 100%; height: auto; aspect-ratio: 600 / 337; object-fit: cover; }
.video-card strong, .video-card small { padding-inline: 1rem; }
.video-card strong { font-size: 1rem; }
.video-card small { color: var(--c-ink-soft); }
.video-card:hover { color: var(--c-accent); }
.play-mark { position: absolute; top: 38%; left: 50%; display: grid; width: 3.2rem; height: 3.2rem; place-items: center; border: 2px solid var(--c-surface); border-radius: 50%; transform: translate(-50%, -50%); background: var(--c-ink); color: var(--c-accent-text); }

.guide-directory { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin-top: 2rem; padding: 1px; background: var(--c-border); }
.guide-directory section { min-width: 0; padding: 1.2rem; background: var(--c-surface); }
.guide-directory h3 { min-height: 46px; font-family: var(--font-display); font-size: 1.45rem; font-weight: 500; text-transform: uppercase; }
.guide-directory a { min-height: 76px; display: grid; align-content: center; gap: 0.2rem; padding: 0.65rem 0; border-top: 1px solid var(--c-border); text-decoration: none; }
.guide-directory a strong { color: var(--c-accent); }
.guide-directory a span { color: var(--c-ink-soft); font-size: 0.82rem; }
.backlog-panel { margin-top: 1.5rem; padding: 1.2rem; border: 1px solid var(--c-border); background: var(--c-ink-soft); color: var(--c-footer-text); }
.backlog-panel p { color: var(--c-footer-text); }
.backlog-panel ul { display: flex; flex-wrap: wrap; gap: 0.55rem; margin: 1rem 0 0; padding: 0; list-style: none; }
.backlog-panel li { padding: 0.45rem 0.65rem; border: 1px solid var(--raw-sand); background: var(--c-ink); color: var(--c-footer-text); font: 750 0.75rem/1.3 var(--font-code); }

.faq-list { display: grid; border-top: 1px solid var(--c-border); }
.faq-list details { border-bottom: 1px solid var(--c-border); background: var(--c-surface); }
.faq-list summary { min-height: 56px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem; cursor: pointer; font-weight: 850; }
.faq-list summary::after { content: "+"; color: var(--c-accent); font: 800 1.4rem/1 var(--font-code); }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { margin: 0; padding: 0 1rem 1rem; color: var(--c-ink-soft); }

.source-list { display: grid; gap: 1px; margin: 0; padding: 1px; list-style: none; background: var(--c-border); }
.source-item { min-width: 0; display: grid; grid-template-columns: 1fr auto; gap: 1rem; align-items: center; padding: 1.2rem; background: var(--c-surface); }
.source-item > div { min-width: 0; }
.source-item strong { display: block; margin-top: 0.3rem; }
.source-item p { margin: 0.25rem 0 0; color: var(--c-ink-soft); font-size: 0.9rem; }
.source-item > a { min-height: 44px; display: inline-flex; align-items: center; font-weight: 850; }
.source-level { color: var(--c-community); font: 800 0.68rem/1 var(--font-code); letter-spacing: 0.08em; }
.source-item[data-evidence-level="VERIFIED"] .source-level { color: var(--c-verified); }
.source-item[data-evidence-level="BOUNDED"] .source-level { color: var(--c-bounded); }
.review-stamp { display: grid; grid-template-columns: 190px 1fr; gap: 1rem; margin-top: 1rem; padding: 1rem; border: 1px solid var(--c-border); background: var(--c-surface-strong); }
.review-stamp span { color: var(--c-ink-soft); }

.bottom-cta { display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: end; margin-top: 7rem; padding: clamp(2rem, 5vw, 4rem); background: var(--c-accent); color: var(--c-accent-text); }
.bottom-cta .section-kicker { color: var(--c-focus); }
.bottom-cta p { margin-bottom: 0; }
.bottom-cta .hero-actions { justify-content: end; }
.bottom-cta .button.primary { border-color: var(--c-ink); background: var(--c-ink); }

.site-footer { margin-top: 0; padding: 4rem 0; background: var(--c-footer); color: var(--c-footer-text); }
.footer-inner { display: grid; grid-template-columns: 1.8fr repeat(3, 1fr); gap: 2rem; }
.footer-inner > div { min-width: 0; display: grid; align-content: start; gap: 0.6rem; }
.footer-inner p, .footer-inner span { margin: 0; color: var(--c-footer-text); font-size: 0.84rem; }
.footer-inner a { min-height: 34px; display: inline-flex; align-items: center; }
.footer-brand { color: var(--c-footer-text); }

@media (max-width: 900px) {
  .desktop-nav, .header-cta { display: none; }
  .mobile-menu { display: block; position: relative; }
  .mobile-menu summary { min-height: 44px; display: flex; align-items: center; padding: 0 0.6rem; font-weight: 850; cursor: pointer; }
  .mobile-menu nav { position: absolute; right: 0; top: calc(100% + 0.6rem); width: min(84vw, 360px); max-height: 70vh; display: grid; overflow-y: auto; border: 1px solid var(--c-border); background: var(--c-surface); box-shadow: var(--shadow-card); }
  .mobile-menu nav a { min-height: 46px; display: flex; align-items: center; padding: 0.5rem 0.9rem; border-bottom: 1px solid var(--c-border); text-decoration: none; }
  .mobile-menu nav a[aria-current="page"] { color: var(--c-accent); font-weight: 850; }
  .hero-machine { opacity: 0.28; right: -7%; }
  .task-group { grid-template-columns: 1fr; gap: 1.2rem; }
  .task-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .official-gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .guide-directory { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  .nav-shell, .page-shell, .footer-inner, .hero-copy { width: min(100% - 28px, var(--page-width)); }
  .nav-shell { min-height: 68px; }
  .brand strong { font-size: 1.05rem; }
  .brand small { font-size: 0.56rem; }
  .brand-mark { width: 34px; height: 34px; }
  .hero, .inner-hero { min-height: auto; }
  .hero-copy { padding: 2.6rem 0 3rem; }
  h1, .inner-hero h1 { font-size: clamp(3rem, 15vw, 4.8rem); }
  h2 { font-size: clamp(2.25rem, 11vw, 3.4rem); }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .fact-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fact-strip > div { border-right: 1px solid var(--raw-sand); border-bottom: 1px solid var(--raw-sand); }
  .fact-strip > div:nth-child(2n) { border-right: 0; }
  .fact-strip > div:nth-last-child(-n + 2) { border-bottom: 0; }
  .hero-machine { width: 220px; height: 160px; right: -70px; bottom: 2%; opacity: 0.18; }
  .page-shell { padding-top: 4rem; }
  .definition-band, .coverage-band, .section-heading, .bottom-cta { grid-template-columns: 1fr; }
  .answer-grid, .task-grid, .choice-grid, .metric-grid, .steps.compact { grid-template-columns: 1fr; }
  .official-gallery, .video-grid { grid-template-columns: 1fr; }
  .content-block { grid-template-columns: 1fr; gap: 1.2rem; }
  .block-index { font-size: 1rem; }
  .language-list { grid-template-columns: 1fr; }
  .review-stamp, .source-item { grid-template-columns: 1fr; }
  .source-item > a { width: max-content; }
  .bottom-cta .hero-actions { justify-content: stretch; }
  .footer-inner { grid-template-columns: 1fr; }
  .comparison-table { min-width: 660px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}