/* Hallmark · macrostructure: Ecosystem Index · tone: playful · anchor hue: coral / lime · theme: Hum · nav: N12 · footer: Ft8 */
@import url("./tokens.css");

html { scroll-behavior: smooth; overflow-x: clip; }
body { margin: 0; background: var(--color-paper); color: var(--color-ink); font-family: var(--font-body); font-size: var(--text-base); line-height: 1.65; overflow-x: clip; }
*, *::before, *::after { box-sizing: border-box; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
h1, h2, h3, p, dl, dd { margin: 0; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 700; line-height: 1.06; letter-spacing: -0.03em; font-style: normal; overflow-wrap: anywhere; min-width: 0; }
h1 { font-size: var(--text-display); }
h2 { font-size: clamp(2rem, 4vw, 3.4rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
p { max-width: 68ch; }
main { display: block; }
.container { width: min(100%, var(--max-width)); margin-inline: auto; padding-inline: clamp(1rem, 4vw, 3rem); }
.skip-link { position: fixed; left: 1rem; top: 1rem; z-index: 1000; padding: .6rem .9rem; background: var(--color-lime); color: var(--color-ink); transform: translateY(-180%); transition: transform var(--dur-mid) var(--ease-out); }
.skip-link:focus { transform: translateY(0); }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

/* N12: one announcement line + one real navigation bar. */
.site-header { position: fixed; inset: 0 0 auto; z-index: 50; transform: translateY(0); transition: transform var(--dur-slow) var(--ease-out); }
.site-header.is-compact { transform: translateY(calc(var(--nav-banner-h) * -1)); }
.site-header.is-dismissed { transform: none; }
.announcement { min-height: var(--nav-banner-h); display: flex; align-items: center; justify-content: center; gap: .35rem; padding: .25rem 3rem; background: var(--color-coral); color: var(--color-white); font-size: var(--text-sm); text-align: center; }
.announcement a { font-weight: 700; text-decoration-thickness: 2px; text-underline-offset: 3px; white-space: nowrap; }
.announcement__dismiss { position: absolute; right: 1rem; display: grid; place-items: center; width: 2rem; height: 2rem; border: 0; background: transparent; color: currentColor; cursor: pointer; }
.announcement__dismiss::before, .announcement__dismiss::after { content: ""; position: absolute; width: 1rem; height: 2px; background: currentColor; }
.announcement__dismiss::before { transform: rotate(45deg); }
.announcement__dismiss::after { transform: rotate(-45deg); }
.site-bar { min-height: var(--nav-bar-h); border-bottom: 1px solid var(--color-rule); background: var(--color-paper); }
.site-bar__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-lg); min-height: var(--nav-bar-h); }
.brand { display: inline-flex; align-items: center; min-width: 0; text-decoration: none; }
.brand img { width: min(12rem, 44vw); height: auto; aspect-ratio: 4 / 1; object-fit: cover; object-position: left center; border-radius: var(--radius-sm); }
.nav-links { display: flex; align-items: center; gap: clamp(.7rem, 2vw, 1.5rem); list-style: none; margin: 0; padding: 0; }
.nav-links a, .nav-toggle { display: inline-flex; align-items: center; justify-content: center; min-height: 2.75rem; white-space: nowrap; font-size: var(--text-sm); font-weight: 700; text-decoration: none; }
.nav-links a { padding-inline: .25rem; border-bottom: 2px solid transparent; transition: color var(--dur-mid) var(--ease-out), border-color var(--dur-mid) var(--ease-out); }
.nav-links a:hover { color: var(--color-coral-deep); border-color: currentColor; }
.nav-cta { padding: .62rem .9rem; border-radius: var(--radius-pill); background: var(--color-ink); color: var(--color-white); }
.nav-toggle { display: none; border: 1px solid var(--color-rule); border-radius: var(--radius-pill); padding-inline: .8rem; background: var(--color-paper); cursor: pointer; }
.mobile-nav { display: none; }

.hero { position: relative; min-height: min(54rem, 100svh); display: grid; align-items: end; padding-top: calc(var(--nav-banner-h) + var(--nav-bar-h) + var(--space-4xl)); background-color: var(--color-night); background-image: linear-gradient(90deg, var(--color-night-veil) 0%, var(--color-night-wash) 58%, var(--color-night-veil) 100%), var(--hero-image, none); background-size: cover; background-position: center; color: var(--color-white); isolation: isolate; overflow: clip; }
.hero::before, .hero::after { content: ""; position: absolute; z-index: -1; border-radius: 50%; filter: blur(1px); opacity: .9; }
.hero::before { width: min(70vw, 50rem); aspect-ratio: 1; right: -15vw; top: 8%; background: var(--color-coral); box-shadow: 0 0 0 3rem var(--color-coral-shadow), 0 0 0 8rem var(--color-coral-shadow-soft); }
.hero::after { width: min(44vw, 30rem); aspect-ratio: 1; left: -10vw; bottom: 7%; background: var(--color-indigo); }
.hero__grid { width: min(100%, var(--max-width)); margin-inline: auto; padding: var(--space-4xl) clamp(1rem, 4vw, 3rem) var(--space-3xl); display: grid; gap: var(--space-3xl); align-items: end; }
.hero__copy { max-width: 48rem; }
.hero__eyebrow, .section-kicker { display: inline-flex; align-items: center; gap: .5rem; margin-bottom: var(--space-md); font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.hero__eyebrow::before, .section-kicker::before { content: ""; width: 1.6rem; height: 3px; background: var(--color-lime); }
.hero h1 { max-width: 12ch; }
.hero h1 span { display: block; margin-top: .45rem; color: var(--color-cyan); font-size: clamp(1rem, 2vw, 1.35rem); letter-spacing: .02em; }
.hero__lede { max-width: 48ch; margin-top: var(--space-lg); color: var(--color-white-80); font-size: clamp(1rem, 1.5vw, 1.25rem); }
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-sm); }
.hero__poster { align-self: stretch; min-height: 14rem; border: 1px solid var(--color-rule-light); border-radius: var(--radius-lg); background: linear-gradient(145deg, var(--color-indigo-wash), var(--color-coral-wash)); display: grid; place-items: center; padding: var(--space-xl); overflow: hidden; }
.hero__poster img { width: 100%; max-width: 30rem; aspect-ratio: 1570 / 690; object-fit: cover; border-radius: var(--radius-md); box-shadow: var(--shadow-float); transform: rotate(1.5deg); }
.hero__poster-note { margin-top: var(--space-lg); color: var(--color-white-68); font-family: var(--font-mono); font-size: var(--text-xs); text-align: center; }
.hero__content-note { margin-top: var(--space-md); color: var(--color-lime); font-size: var(--text-xs); }

.button { position: relative; display: inline-flex; align-items: center; justify-content: center; min-height: 3rem; padding: .7rem 1.2rem; border: 1px solid transparent; border-radius: var(--radius-pill); font-weight: 800; line-height: 1; text-decoration: none; white-space: nowrap; cursor: pointer; transition: transform var(--dur-fast) var(--ease-out), background-color var(--dur-mid) var(--ease-out), border-color var(--dur-mid) var(--ease-out), color var(--dur-mid) var(--ease-out); }
.button:focus-visible, .nav-toggle:focus-visible, .announcement__dismiss:focus-visible, .faq__question:focus-visible, .tab:focus-visible, .lightbox__close:focus-visible, .lightbox__control:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 3px; }
.button:active { transform: translateY(1px); }
.button--primary { background: var(--color-lime); color: var(--color-ink); box-shadow: 0 .45rem 0 var(--color-lime-shadow); }
.button--primary::after { content: ""; position: absolute; inset: .15rem; border: 1px solid var(--color-white-55); border-radius: inherit; opacity: .7; }
.button--primary:hover { background: var(--color-white); transform: translateY(-2px); }
.button--secondary { border-color: var(--color-white-45); color: var(--color-white); }
.button--secondary:hover { border-color: var(--color-white); background: var(--color-white-10); }
.button--dark { background: var(--color-ink); color: var(--color-white); }
.button--dark:hover { background: var(--color-coral-deep); transform: translateY(-2px); }
.button--large { min-height: 4.25rem; padding-inline: 2rem; font-size: 1.2rem; }
.button:disabled, .button[aria-disabled="true"], .button[data-state="disabled"] { cursor: not-allowed; opacity: .48; transform: none; }
.button[data-state="opening"], .button[data-state="loading"] { cursor: progress; opacity: .78; }
.button[data-state="error"] { border-color: var(--color-coral-deep); color: var(--color-coral-deep); }
.button[data-state="success"] { border-color: var(--color-indigo); background: var(--color-indigo); color: var(--color-white); }

.section { padding-block: var(--space-5xl); }
.section--tint { background: var(--color-paper-soft); }
.section--night { background: var(--color-night); color: var(--color-white); }
.section-head { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: var(--space-2xl); align-items: end; margin-bottom: var(--space-2xl); }
.section-head p { color: var(--color-ink-soft); }
.section--night .section-head p { color: var(--color-white-68); }
.section-kicker { color: var(--color-coral-deep); }
.section--night .section-kicker { color: var(--color-lime); }
.info-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--color-rule); border-left: 1px solid var(--color-rule); }
.info-item { min-width: 0; padding: var(--space-lg); border-right: 1px solid var(--color-rule); border-bottom: 1px solid var(--color-rule); }
.info-item dt { color: var(--color-ink-soft); font-size: var(--text-sm); }
.info-item dd { margin-top: .3rem; font-family: var(--font-display); font-size: 1.15rem; font-weight: 700; overflow-wrap: anywhere; }
.info-item dd[data-volatile] { color: var(--color-coral-deep); }
.source-note { margin-top: var(--space-md); color: var(--color-ink-soft); font-size: var(--text-xs); }

.discovery-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--space-md); }
.discovery-card { min-height: 14rem; grid-column: span 4; display: flex; flex-direction: column; justify-content: space-between; gap: var(--space-xl); padding: var(--space-xl); border-radius: var(--radius-lg); background: var(--color-white); box-shadow: 0 1px 0 var(--color-rule); text-decoration: none; transition: transform var(--dur-mid) var(--ease-out), box-shadow var(--dur-mid) var(--ease-out), background-color var(--dur-mid) var(--ease-out); }
.discovery-card:nth-child(2) { background: var(--color-cyan); }
.discovery-card:nth-child(3) { background: var(--color-lime); }
.discovery-card:nth-child(4) { grid-column: span 6; background: var(--color-night); color: var(--color-white); }
.discovery-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card); }
.discovery-card__meta { display: flex; justify-content: space-between; gap: var(--space-sm); color: var(--color-ink-soft); font-family: var(--font-mono); font-size: var(--text-xs); }
.discovery-card:nth-child(4) .discovery-card__meta { color: var(--color-white-66); }

.story { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: var(--space-4xl); align-items: start; }
.story__body { display: grid; gap: var(--space-lg); font-size: clamp(1.05rem, 1.5vw, 1.25rem); }
.story__body p { max-width: 60ch; }
.story__body strong { color: var(--color-coral-deep); }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-md); }
.feature-card { padding: var(--space-xl); border: 1px solid var(--color-rule); border-radius: var(--radius-lg); background: var(--color-paper); transition: transform var(--dur-mid) var(--ease-out), box-shadow var(--dur-mid) var(--ease-out); }
.feature-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-card); }
.feature-card__index { display: block; margin-bottom: var(--space-2xl); color: var(--color-coral-deep); font-family: var(--font-mono); font-size: var(--text-sm); }
.feature-card p { margin-top: var(--space-sm); color: var(--color-ink-soft); font-size: var(--text-sm); }

.gallery-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-md); }
.gallery-card { position: relative; min-width: 0; margin: 0; overflow: hidden; border-radius: var(--radius-md); background: var(--color-night); }
.gallery-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform var(--dur-slow) var(--ease-out), filter var(--dur-slow) var(--ease-out); }
.gallery-card:hover img { transform: scale(1.03); filter: saturate(1.05); }
.gallery-card figcaption { padding: .7rem .85rem; color: var(--color-white-80); font-size: var(--text-sm); }
.gallery-card__button { position: absolute; inset: 0; border: 0; background: transparent; cursor: zoom-in; }
.empty-visual { aspect-ratio: 4 / 3; display: grid; place-items: center; padding: var(--space-xl); background: linear-gradient(140deg, var(--color-night-soft), var(--color-indigo)); color: var(--color-white); text-align: center; }

.timeline { display: grid; gap: var(--space-md); }
.timeline__item { display: grid; grid-template-columns: 8rem minmax(0, 1fr); gap: var(--space-lg); padding-block: var(--space-lg); border-top: 1px solid var(--color-rule); }
.timeline__date { color: var(--color-coral-deep); font-family: var(--font-mono); font-size: var(--text-sm); }
.timeline__item p { margin-top: .35rem; color: var(--color-ink-soft); }

.review-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-md); }
.review-card { min-height: 12rem; padding: var(--space-xl); border: 1px solid var(--color-rule-light); border-radius: var(--radius-lg); background: var(--color-white-06); }
.review-card p { color: var(--color-white-80); }
.review-card__source { display: block; margin-top: var(--space-xl); color: var(--color-lime); font-family: var(--font-mono); font-size: var(--text-xs); }

.faq-list { display: grid; gap: .6rem; }
.faq-item { border-top: 1px solid var(--color-rule); }
.faq__question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); padding: var(--space-lg) 0; border: 0; background: transparent; color: inherit; text-align: left; font-family: var(--font-display); font-size: 1.1rem; font-weight: 700; cursor: pointer; }
.faq__icon { flex: 0 0 auto; width: 1.65rem; height: 1.65rem; display: grid; place-items: center; border: 1px solid currentColor; border-radius: 50%; font-family: var(--font-body); font-size: 1.2rem; line-height: 1; }
.faq__answer { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--dur-slow) var(--ease-out); }
.faq__answer > div { min-height: 0; overflow: hidden; }
.faq-item.is-open .faq__answer { grid-template-rows: 1fr; }
.faq-item.is-open .faq__icon { background: var(--color-ink); color: var(--color-paper); }
.faq__answer p { padding: 0 2.6rem var(--space-lg) 0; color: var(--color-ink-soft); }

.final-cta { padding-block: var(--space-5xl); background: var(--color-coral); color: var(--color-white); }
.final-cta__inner { display: flex; align-items: end; justify-content: space-between; gap: var(--space-2xl); }
.final-cta p { margin-top: var(--space-md); color: var(--color-white-82); }
.final-cta .button--primary { background: var(--color-white); color: var(--color-ink); }
.final-cta .button--primary:hover { background: var(--color-lime); }

.site-footer { background: var(--color-ink); color: var(--color-white); }
.footer-main { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: var(--space-3xl); padding-block: var(--space-4xl); }
.footer-main .brand img { border: 1px solid var(--color-rule-light); }
.footer-main p { margin-top: var(--space-md); color: var(--color-white-68); font-size: var(--text-sm); }
.footer-heading { margin-bottom: var(--space-md); color: var(--color-lime); font-family: var(--font-mono); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: .1em; }
.footer-links { display: grid; gap: .55rem; list-style: none; margin: 0; padding: 0; }
.footer-links a { color: var(--color-white-78); font-size: var(--text-sm); text-decoration: none; }
.footer-links a:hover { color: var(--color-white); text-decoration: underline; text-underline-offset: 3px; }
.footer-disclaimer { padding-block: var(--space-lg); border-top: 1px solid var(--color-rule-light); color: var(--color-white-62); font-size: var(--text-xs); }
.footer-marquee { overflow: hidden; border-top: 2px solid var(--color-lime); color: var(--color-lime); }
.footer-marquee__track { display: flex; width: max-content; gap: var(--space-2xl); padding-block: var(--space-md); font-family: var(--font-display); font-weight: 700; letter-spacing: .08em; white-space: nowrap; animation: footer-marquee 32s linear infinite; }
@keyframes footer-marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* Gallery, download, guide and article layouts. */
.page-hero { padding-block: calc(var(--nav-banner-h) + var(--nav-bar-h) + var(--space-4xl)) var(--space-3xl); background: var(--color-night); color: var(--color-white); }
.page-hero p { margin-top: var(--space-lg); color: var(--color-white-72); }
.page-hero .section-kicker { color: var(--color-lime); }
.page-content { padding-block: var(--space-4xl); }
.page-content > * + * { margin-top: var(--space-4xl); }
.download-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-md); }
.platform-card { padding: var(--space-2xl); border: 1px solid var(--color-rule); border-radius: var(--radius-lg); background: var(--color-white); }
.platform-card--featured { border: 2px solid var(--color-coral); box-shadow: var(--shadow-card); }
.platform-card__tag { display: inline-block; padding: .25rem .55rem; border-radius: var(--radius-pill); background: var(--color-lime); font-family: var(--font-mono); font-size: var(--text-xs); }
.platform-card p { margin-top: var(--space-md); color: var(--color-ink-soft); }
.platform-card .button { margin-top: var(--space-xl); }
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-md); counter-reset: steps; }
.step { position: relative; padding: var(--space-xl); border-top: 3px solid var(--color-coral); background: var(--color-paper-soft); }
.step::before { counter-increment: steps; content: counter(steps, decimal-leading-zero); display: block; margin-bottom: var(--space-xl); color: var(--color-coral-deep); font-family: var(--font-mono); }
.step p { margin-top: .5rem; color: var(--color-ink-soft); font-size: var(--text-sm); }
.requirements { width: 100%; border-collapse: collapse; }
.requirements th, .requirements td { padding: .85rem; border-bottom: 1px solid var(--color-rule); text-align: left; vertical-align: top; }
.requirements th { width: 26%; color: var(--color-ink-soft); font-size: var(--text-sm); font-weight: 600; }
.tabs { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: var(--space-xl); }
.tab { min-height: 2.75rem; padding: .6rem .9rem; border: 1px solid var(--color-rule); border-radius: var(--radius-pill); background: transparent; cursor: pointer; }
.tab.is-active, .tab:hover { border-color: var(--color-ink); background: var(--color-ink); color: var(--color-white); }
.tab:disabled, .tab[data-state="disabled"] { cursor: not-allowed; opacity: .48; }
.tab[data-state="loading"] { cursor: progress; opacity: .72; }
.tab[data-state="error"] { border-color: var(--color-coral-deep); color: var(--color-coral-deep); }
.tab[data-state="success"] { border-color: var(--color-indigo); background: var(--color-indigo); color: var(--color-white); }
.guide-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-md); }
.guide-card { display: flex; flex-direction: column; justify-content: space-between; min-height: 15rem; padding: var(--space-xl); border: 1px solid var(--color-rule); border-radius: var(--radius-lg); background: var(--color-white); }
.guide-card p { margin-top: var(--space-sm); color: var(--color-ink-soft); font-size: var(--text-sm); }
.guide-card__link { display: inline-flex; margin-top: var(--space-xl); color: var(--color-coral-deep); font-weight: 800; text-decoration: none; }
.guide-card__link:hover { text-decoration: underline; text-underline-offset: 4px; }
.toc { position: sticky; top: calc(var(--nav-bar-h) + 1rem); align-self: start; padding: var(--space-lg); border-left: 3px solid var(--color-lime); background: var(--color-paper-soft); }
.toc a { display: block; padding: .35rem 0; color: var(--color-ink-soft); font-size: var(--text-sm); text-decoration: none; }
.toc a:hover { color: var(--color-ink); }
.guide-layout { display: grid; grid-template-columns: 14rem minmax(0, 1fr); gap: var(--space-3xl); }
.guide-article { display: grid; gap: var(--space-3xl); }
.guide-section { scroll-margin-top: 7rem; }
.guide-section h2 { margin-bottom: var(--space-md); }
.guide-section p + p { margin-top: var(--space-md); }
.checklist, .numbered-list { display: grid; gap: .65rem; margin: var(--space-lg) 0 0; padding-left: 1.2rem; }
.guide-section table { width: 100%; margin-top: var(--space-lg); border-collapse: collapse; }
.guide-section td, .guide-section th { padding: .75rem; border: 1px solid var(--color-rule); text-align: left; }
.article-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-md); }
.article-card { padding: var(--space-xl); border: 1px solid var(--color-rule); background: var(--color-white); }
.article-card p { margin-top: var(--space-sm); color: var(--color-ink-soft); font-size: var(--text-sm); }
.article-card a { display: inline-block; margin-top: var(--space-lg); color: var(--color-coral-deep); font-weight: 800; }
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 15rem; gap: var(--space-4xl); }
.article-body { max-width: 72ch; }
.article-body h2 { margin-top: var(--space-3xl); margin-bottom: var(--space-md); font-size: clamp(1.6rem, 3vw, 2.25rem); }
.article-body h3 { margin-top: var(--space-2xl); margin-bottom: .5rem; }
.article-body p + p { margin-top: var(--space-md); }
.article-body ul, .article-body ol { display: grid; gap: .55rem; margin-top: var(--space-md); padding-left: 1.2rem; }
.article-callout { margin-top: var(--space-xl); padding: var(--space-lg); border-left: 3px solid var(--color-coral); background: var(--color-paper-soft); }
.article-related { align-self: start; position: sticky; top: calc(var(--nav-bar-h) + 1rem); padding: var(--space-lg); background: var(--color-paper-soft); }
.article-related a { display: block; padding-block: .35rem; color: var(--color-ink-soft); font-size: var(--text-sm); text-decoration: none; }
.article-related a:hover { color: var(--color-coral-deep); }

.lightbox { position: fixed; inset: 0; z-index: 100; display: none; place-items: center; padding: var(--space-lg); background: var(--color-night-veil); }
.lightbox.is-open { display: grid; }
.lightbox__figure { position: relative; width: min(100%, 72rem); }
.lightbox__image { width: 100%; max-height: 82svh; object-fit: contain; }
.lightbox__caption { margin-top: .5rem; color: var(--color-white-75); text-align: center; }
.lightbox__close, .lightbox__control { position: absolute; z-index: 1; display: grid; place-items: center; width: 2.75rem; height: 2.75rem; border: 1px solid var(--color-white-35); border-radius: 50%; background: var(--color-night-wash); color: var(--color-white); cursor: pointer; }
.lightbox__close { top: -3.5rem; right: 0; }
.lightbox__control { top: 50%; transform: translateY(-50%); }
.lightbox__control--prev { left: -3.5rem; }
.lightbox__control--next { right: -3.5rem; }

@media (min-width: 40rem) {
  .hero__grid { grid-template-columns: minmax(0, 1.1fr) minmax(15rem, .9fr); }
  .info-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 60rem) {
  .discovery-card:nth-child(1) { grid-column: span 5; }
  .discovery-card:nth-child(2) { grid-column: span 3; }
  .discovery-card:nth-child(3) { grid-column: span 4; }
  .discovery-card:nth-child(4) { grid-column: span 7; }
  .discovery-card:nth-child(5) { grid-column: span 5; }
}
@media (max-width: 60rem) {
  .section-head, .story, .article-layout, .guide-layout { grid-template-columns: 1fr; }
  .toc, .article-related { position: static; }
  .toc { display: flex; flex-wrap: wrap; gap: .4rem 1rem; border-left: 0; border-top: 3px solid var(--color-lime); }
  .toc a { padding: 0; }
}
@media (max-width: 40rem) {
  .announcement { justify-content: flex-start; padding-inline: 1rem 3rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: inline-flex; }
  .mobile-nav { display: grid; gap: .25rem; padding: .7rem 1rem 1rem; border-top: 1px solid var(--color-rule); background: var(--color-paper); }
  .mobile-nav[hidden] { display: none; }
  .mobile-nav a { min-height: 2.75rem; display: flex; align-items: center; padding-inline: .4rem; font-weight: 700; text-decoration: none; }
  .hero { min-height: 42rem; }
  .hero__grid { padding-top: var(--space-4xl); }
  .hero__poster { min-height: 11rem; }
  .hero__poster img { width: 100%; transform: none; }
  .discovery-grid, .feature-grid, .gallery-grid, .review-grid, .download-grid, .steps, .guide-grid, .article-grid { grid-template-columns: minmax(0, 1fr); }
  .discovery-card, .discovery-card:nth-child(4) { grid-column: auto; min-height: 12rem; }
  .timeline__item { grid-template-columns: 1fr; gap: .35rem; }
  .footer-main { grid-template-columns: 1fr; gap: var(--space-2xl); }
  .final-cta__inner { align-items: start; flex-direction: column; }
  .requirements, .requirements tbody, .requirements tr, .requirements th, .requirements td { display: block; width: 100%; }
  .requirements tr { padding-block: .8rem; border-bottom: 1px solid var(--color-rule); }
  .requirements th, .requirements td { padding: .2rem 0; border: 0; }
  .requirements td::before { content: attr(data-label) ": "; color: var(--color-ink-soft); font-size: var(--text-sm); }
  .lightbox__control--prev { left: .25rem; }
  .lightbox__control--next { right: .25rem; }
  .lightbox__close { top: -3.2rem; right: 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}