/* Hallmark · pre-emit critique: P5 H5 E5 S5 R4 V5
 * Hallmark · genre: atmospheric · macrostructure: Prism Marquee · theme: Aurora
 * enrichment: Tier C source-backed artwork · nav: N5 floating rail · footer: Ft5 statement
 * slop: pass (42–45) · honest: pass (46) · chrome: pass (47) · tokens: pass (48)
 * responsive: pass (49, 50–57) · mobile: pass (320 / 375 / 414 / 768)
 */
@import url("../../tokens.css");

* { box-sizing: border-box; }
html { overflow-x: clip; scroll-behavior: smooth; }
body { margin: 0; overflow-x: clip; background: var(--color-void); color: var(--color-light); font-family: var(--font-body); line-height: 1.7; }
body.modal-open { overflow: clip; }
img { display: block; max-width: 100%; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
h1, h2, h3, p, figure, dl { margin: 0; }
h1, h2, h3 { font-family: var(--font-display); font-style: normal; font-weight: 700; line-height: 1.12; overflow-wrap: anywhere; min-width: 0; }
p { color: var(--color-muted); }
ul, ol { margin: 0; padding: 0; }
main { display: block; }

.site-shell { width: min(var(--max-width), calc(100% - 2rem)); margin-inline: auto; }
.section { padding-block: var(--space-9); }
.section--paper { background: var(--color-paper); color: var(--color-ink); }
.section--paper p { color: var(--color-ink-soft); }
.section--night { background: var(--color-night); }
.section--panel { background: var(--color-panel); }
.section-head { display: block; max-width: 48rem; margin-block-end: var(--space-7); }
.section-head h2 { margin-block-start: var(--space-2); font-size: clamp(2.1rem, 6vw, 4.8rem); letter-spacing: -0.06em; }
.section-head p { max-width: 40rem; margin-block-start: var(--space-4); font-size: 1.04rem; }
.eyebrow { color: var(--color-accent); font: 0.72rem/1.2 var(--font-mono); letter-spacing: 0.13em; text-transform: uppercase; }
.eyebrow--dark { color: var(--color-accent-strong); }
.mono { font-family: var(--font-mono); }

.site-nav { position: fixed; z-index: var(--z-nav); top: 0.85rem; left: 50%; display: flex; width: min(72rem, calc(100% - 1.25rem)); min-height: 3.55rem; align-items: center; gap: var(--space-3); transform: translateX(-50%); border: 1px solid var(--color-line-strong); border-radius: var(--radius-md); background: var(--color-overlay-deep); box-shadow: var(--shadow-panel); color: var(--color-light); }
.site-nav__brand { display: inline-flex; min-width: 0; align-items: center; gap: var(--space-3); padding: 0.35rem 0.75rem; text-decoration: none; white-space: nowrap; }
.site-nav__brand img { width: 3rem; height: 1.8rem; border-radius: var(--radius-sm); object-fit: cover; object-position: left center; }
.site-nav__brand strong { font-size: 0.86rem; }
.site-nav__links { display: flex; min-width: 0; flex: 1; justify-content: center; gap: var(--space-5); list-style: none; }
.site-nav__links a { color: var(--color-light); font-size: 0.84rem; text-decoration: none; white-space: nowrap; transition: color var(--dur-fast) var(--ease-out); }
.site-nav__links a:hover, .site-nav__links a[aria-current="page"] { color: var(--color-accent-soft); }
.site-nav__cta { margin-inline-end: 0.35rem; }
.menu-toggle { display: none; margin-inline-start: auto; border: 0; background: transparent; color: var(--color-light); cursor: pointer; white-space: nowrap; }

.button { position: relative; display: inline-flex; min-height: 3rem; align-items: center; justify-content: center; gap: var(--space-2); overflow: clip; border: 1px solid var(--color-line-strong); border-radius: var(--radius-sm); padding: 0.75rem 1.15rem; color: var(--color-light); font-weight: 700; line-height: 1; text-decoration: none; white-space: nowrap; transition: transform var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), background-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out); }
.button:hover { transform: translateY(-2px); border-color: var(--color-accent); box-shadow: var(--shadow-accent); }
.button:focus-visible, .filter-tabs button:focus-visible, .lightbox button:focus-visible, .modal button:focus-visible, summary:focus-visible, .menu-toggle:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 3px; }
.button:active { transform: translateY(0); }
.button--accent { border-color: var(--color-accent); background: var(--color-accent); color: var(--color-accent-ink); }
.button--accent::after { position: absolute; inset-block: 0; left: -45%; width: 28%; background: var(--color-accent-soft); content: ""; opacity: 0.64; transform: skewX(-22deg); animation: button-sheen 3.8s var(--ease-in-out) infinite; }
.button--ghost { background: var(--color-overlay); }
.button--wide { min-width: 13rem; }
.button--large { min-height: 3.8rem; padding-inline: 1.5rem; font-size: 1.06rem; }
.site-nav .button { min-height: 2.5rem; padding-block: 0.55rem; font-size: 0.78rem; }

.hero { position: relative; display: flex; min-height: 92svh; align-items: flex-end; isolation: isolate; overflow: clip; background: var(--color-void); }
.hero__art, .hero__veil { position: absolute; z-index: -2; inset: 0; width: 100%; height: 100%; }
.hero__art { object-fit: cover; object-position: center; filter: saturate(0.72) contrast(1.1); }
.hero__veil { z-index: -1; background: radial-gradient(circle at 76% 24%, var(--color-blue-glow), transparent 27%), radial-gradient(circle at 46% 84%, var(--color-accent-glow), transparent 30%), linear-gradient(90deg, var(--color-overlay-deep) 0%, var(--color-overlay) 43%, var(--color-overlay) 100%), linear-gradient(0deg, var(--color-overlay-deep), transparent 65%); }
.hero__content { width: min(var(--max-width), calc(100% - 2rem)); min-width: 0; margin-inline: auto; padding-block: 9rem 5.8rem; }
.hero__kicker { display: inline-flex; align-items: center; gap: var(--space-3); color: var(--color-accent-soft); font: 0.72rem/1.2 var(--font-mono); letter-spacing: 0.12em; }
.hero__kicker::before { width: 2.4rem; height: 1px; background: var(--color-accent); content: ""; }
.hero h1 { max-width: 11ch; margin-block-start: var(--space-5); font-size: clamp(3.2rem, 10vw, 8rem); letter-spacing: -0.095em; }
.hero h1 span { display: block; margin-block-start: var(--space-3); color: var(--color-accent-soft); font: 500 clamp(1rem, 2.2vw, 1.6rem)/1.15 var(--font-mono); letter-spacing: -0.06em; }
.hero__lede { max-width: 35rem; margin-block-start: var(--space-5); color: var(--color-light); font-size: clamp(1rem, 1.7vw, 1.2rem); }
.hero__tags { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-block-start: var(--space-5); }
.hero__tags span { border-block: 1px solid var(--color-line-strong); padding: 0.3rem 0.6rem; color: var(--color-light); font: 0.7rem/1.1 var(--font-mono); white-space: nowrap; }
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-block-start: var(--space-6); }
.hero__note { position: absolute; right: 1rem; bottom: 1.1rem; left: 1rem; display: flex; justify-content: space-between; color: var(--color-muted); font: 0.67rem/1.2 var(--font-mono); letter-spacing: 0.1em; }

.info-strip { position: relative; z-index: 1; margin-block-start: -2rem; border-top: 3px solid var(--color-accent); background: var(--color-panel); box-shadow: var(--shadow-panel); }
.info-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.info-item { min-width: 0; border-bottom: 1px solid var(--color-line); padding: 1.05rem; }
.info-item:nth-child(odd) { border-inline-end: 1px solid var(--color-line); }
.info-item dt { color: var(--color-muted); font: 0.68rem/1.2 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; }
.info-item dd { margin-block-start: var(--space-2); color: var(--color-light); font-weight: 700; overflow-wrap: anywhere; }

.story-layout { display: grid; gap: var(--space-7); }
.story-copy { max-width: 44rem; }
.story-copy p { margin-block-end: var(--space-5); font-size: clamp(1.08rem, 1.7vw, 1.35rem); line-height: 1.95; }
.story-mark { position: relative; min-height: 24rem; overflow: clip; border-radius: var(--radius-md); background: var(--color-night); box-shadow: var(--shadow-panel); }
.story-mark img { width: 100%; height: 100%; min-height: 24rem; object-fit: cover; object-position: center; opacity: 0.78; }
.story-mark::after { position: absolute; inset: 0; background: linear-gradient(120deg, var(--color-overlay-deep), transparent 72%); content: ""; }
.story-mark__label { position: absolute; z-index: 1; inset: auto auto 1.5rem 1.5rem; color: var(--color-light); }
.story-mark__label strong { display: block; margin-block-start: var(--space-2); font-size: clamp(1.5rem, 4vw, 3rem); }

.feature-grid { display: grid; grid-template-columns: repeat(1, minmax(0, 1fr)); gap: var(--space-3); }
.feature { min-width: 0; border: 1px solid var(--color-line); border-radius: var(--radius-md); background: var(--color-panel); padding: var(--space-5); transition: transform var(--dur-med) var(--ease-out), box-shadow var(--dur-med) var(--ease-out), border-color var(--dur-med) var(--ease-out); }
.feature:hover { transform: translateY(-4px); border-color: var(--color-accent); box-shadow: var(--shadow-accent); }
.feature__index { color: var(--color-accent); font: 0.72rem/1.2 var(--font-mono); }
.feature h3 { margin-block-start: var(--space-4); font-size: 1.35rem; }
.feature p { margin-block-start: var(--space-3); }

.gallery-preview, .gallery-grid { display: grid; grid-template-columns: repeat(1, minmax(0, 1fr)); gap: var(--space-4); }
.gallery-card { min-width: 0; overflow: clip; border-radius: var(--radius-md); background: var(--color-panel); }
.gallery-card button { position: relative; display: block; width: 100%; overflow: clip; border: 0; padding: 0; background: var(--color-night); cursor: zoom-in; }
.gallery-card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; transition: transform var(--dur-med) var(--ease-out), filter var(--dur-med) var(--ease-out); }
.gallery-card button::after { position: absolute; inset: 0; background: var(--color-accent-glow); content: ""; opacity: 0; transition: opacity var(--dur-med) var(--ease-out); }
.gallery-card:hover img { transform: scale(1.04); filter: saturate(1.1); }
.gallery-card:hover button::after { opacity: 1; }
.gallery-card figcaption { display: flex; justify-content: space-between; gap: var(--space-3); padding: var(--space-3) var(--space-4); color: var(--color-muted); font: 0.7rem/1.3 var(--font-mono); }
.gallery-card figcaption span:last-child { color: var(--color-accent-soft); }
.section--paper .gallery-card { background: var(--color-paper-soft); }

.download-band { background: radial-gradient(circle at 80% 20%, var(--color-blue-glow), transparent 26%), var(--color-night-2); }
.download-band__inner { display: grid; gap: var(--space-6); align-items: end; }
.download-band h2, .final-cta h2 { max-width: 12ch; margin-block-start: var(--space-2); font-size: clamp(2.5rem, 7vw, 5.8rem); letter-spacing: -0.08em; }
.download-band p:not(.eyebrow), .final-cta p:not(.eyebrow) { max-width: 39rem; margin-block-start: var(--space-4); color: var(--color-light); }
.timeline { border-top: 1px solid var(--color-line); }
.timeline__item { display: grid; grid-template-columns: 3rem minmax(0, 1fr); gap: var(--space-4); border-bottom: 1px solid var(--color-line); padding-block: var(--space-5); }
.timeline__index { color: var(--color-accent); font: 0.8rem/1 var(--font-mono); }
.timeline__meta { color: var(--color-accent-soft); font: 0.72rem/1.2 var(--font-mono); letter-spacing: 0.08em; }
.timeline h3 { margin-block-start: var(--space-2); font-size: 1.35rem; }
.timeline p { margin-block-start: var(--space-2); }

.fit-grid { display: grid; grid-template-columns: repeat(1, minmax(0, 1fr)); gap: var(--space-3); }
.fit-item { min-width: 0; border: 1px solid var(--color-line-strong); border-radius: var(--radius-md); padding: var(--space-5); }
.fit-item > span { color: var(--color-accent-strong); font: 0.72rem/1.2 var(--font-mono); }
.fit-item h3 { margin-block: var(--space-3) var(--space-2); font-size: 1.25rem; }

.faq-list { border-top: 1px solid var(--color-line-strong); }
.faq-item { border-bottom: 1px solid var(--color-line-strong); }
.faq-item summary { display: flex; min-height: 4.35rem; align-items: center; justify-content: space-between; gap: var(--space-4); cursor: pointer; color: inherit; font-weight: 700; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { flex: 0 0 auto; color: var(--color-accent-strong); content: "+"; font: 1.4rem/1 var(--font-mono); }
.faq-item[open] summary::after { content: "−"; }
.faq-item__answer { max-width: 54rem; padding: 0 2rem var(--space-5) 0; color: var(--color-ink-soft); }
.section--night .faq-item__answer, .section--panel .faq-item__answer { color: var(--color-muted); }

.final-cta { background: var(--color-accent); color: var(--color-accent-ink); }
.final-cta p:not(.eyebrow) { color: var(--color-accent-ink); }
.final-cta .eyebrow { color: var(--color-accent-ink); }
.final-cta__inner { min-height: 26rem; display: grid; align-content: center; justify-items: start; }
.final-cta .button--ghost { border-color: var(--color-accent-ink); background: transparent; color: var(--color-accent-ink); }

.footer { background: var(--color-void); color: var(--color-light); padding-block: var(--space-7) var(--space-8); }
.footer__grid { display: grid; gap: var(--space-7); }
.footer__brand img { width: 9rem; height: 3.4rem; border-radius: var(--radius-sm); object-fit: cover; object-position: left center; }
.footer__brand p { max-width: 31rem; margin-block-start: var(--space-4); }
.footer__columns { display: grid; gap: var(--space-6); }
.footer__column h3 { color: var(--color-accent-soft); font: 0.7rem/1.2 var(--font-mono); letter-spacing: 0.12em; }
.footer__column ul { display: grid; gap: var(--space-2); margin-block-start: var(--space-3); list-style: none; }
.footer__column a { color: var(--color-muted); font-size: 0.88rem; text-decoration: none; transition: color var(--dur-fast) var(--ease-out); }
.footer__column a:hover { color: var(--color-light); }
.footer__legal { display: grid; gap: var(--space-2); border-top: 1px solid var(--color-line); padding-top: var(--space-5); color: var(--color-muted); font-size: 0.76rem; }

.page-hero { padding: 11rem 0 5rem; background: radial-gradient(circle at 80% 20%, var(--color-blue-glow), transparent 26%), radial-gradient(circle at 20% 70%, var(--color-accent-glow), transparent 28%), var(--color-night); }
.page-hero h1 { max-width: 11ch; margin-block-start: var(--space-3); font-size: clamp(3rem, 8vw, 6.5rem); letter-spacing: -0.08em; }
.page-hero p { max-width: 42rem; margin-block-start: var(--space-4); font-size: 1.08rem; }
.page-hero .eyebrow { color: var(--color-accent-soft); }
.content-layout { display: grid; gap: var(--space-7); }
.chapter-nav { position: sticky; top: 5.2rem; align-self: start; border: 1px solid var(--color-line-strong); border-radius: var(--radius-md); background: var(--color-panel); padding: var(--space-4); }
.chapter-nav strong { color: var(--color-accent-soft); font-size: 0.86rem; }
.chapter-nav ul { display: grid; gap: var(--space-2); margin-block-start: var(--space-3); list-style: none; }
.chapter-nav a { color: var(--color-muted); font-size: 0.84rem; text-decoration: none; }
.chapter-nav a:hover { color: var(--color-light); }
.reading { max-width: 50rem; }
.reading h2 { margin-block: var(--space-7) var(--space-3); font-size: clamp(1.8rem, 4vw, 3rem); }
.reading h3 { margin-block: var(--space-5) var(--space-2); font-size: 1.25rem; }
.reading p { margin-block-start: var(--space-3); }
.reading ul, .reading ol { display: grid; gap: var(--space-2); margin-block: var(--space-3); padding-inline-start: 1.25rem; color: var(--color-muted); }
.reading li::marker { color: var(--color-accent); }
.reading table { width: 100%; margin-block: var(--space-4); border-collapse: collapse; font-size: 0.9rem; }
.reading th, .reading td { border-bottom: 1px solid var(--color-line); padding: 0.75rem 0.5rem; text-align: left; vertical-align: top; }
.reading th { color: var(--color-accent-soft); font-family: var(--font-mono); font-size: 0.72rem; font-weight: 500; letter-spacing: 0.08em; }
.callout { margin-block: var(--space-5); border-inline-start: 3px solid var(--color-accent); background: var(--color-panel); padding: var(--space-4) var(--space-5); }
.callout p { color: var(--color-light); }
.guide-card-grid, .platform-grid, .requirements-grid, .article-grid { display: grid; grid-template-columns: repeat(1, minmax(0, 1fr)); gap: var(--space-4); }
.guide-card, .platform-card, .requirement-card, .article-card { min-width: 0; border: 1px solid var(--color-line); border-radius: var(--radius-md); background: var(--color-panel); padding: var(--space-5); }
.guide-card__icon { color: var(--color-accent); font: 0.75rem/1 var(--font-mono); }
.guide-card h3, .platform-card h2, .requirement-card h2, .article-card h2 { margin-block: var(--space-4) var(--space-2); font-size: 1.3rem; }
.guide-card p, .platform-card p, .requirement-card p, .article-card p { font-size: 0.92rem; }
.guide-card a, .article-card a { display: inline-flex; margin-block-start: var(--space-4); color: var(--color-accent-soft); font-weight: 700; text-decoration: none; }
.platform-card--accent { border-color: var(--color-accent); box-shadow: var(--shadow-accent); }
.platform-card__label { color: var(--color-accent-soft); font: 0.7rem/1.2 var(--font-mono); letter-spacing: 0.08em; }
.requirement-card dl { display: grid; gap: var(--space-3); margin-block-start: var(--space-4); }
.requirement-card dt { color: var(--color-accent-soft); font: 0.72rem/1.2 var(--font-mono); }
.requirement-card dd { margin: var(--space-1) 0 0; color: var(--color-muted); font-size: 0.9rem; }
.step-list { display: grid; gap: var(--space-3); counter-reset: steps; list-style: none; }
.step-list li { display: grid; grid-template-columns: 2.4rem minmax(0, 1fr); gap: var(--space-3); counter-increment: steps; }
.step-list li::before { display: grid; width: 2.4rem; height: 2.4rem; place-items: center; border-radius: 50%; background: var(--color-accent); color: var(--color-accent-ink); content: counter(steps); font: 0.8rem/1 var(--font-mono); }
.step-list strong { color: var(--color-light); }
.step-list p { margin-block-start: var(--space-1); }
.filter-tabs { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-block-end: var(--space-5); }
.filter-tabs button { border: 1px solid var(--color-line-strong); border-radius: 999px; background: transparent; color: var(--color-muted); padding: 0.55rem 0.85rem; cursor: pointer; white-space: nowrap; }
.filter-tabs button[aria-selected="true"] { border-color: var(--color-accent); background: var(--color-accent); color: var(--color-accent-ink); }
.gallery-grid [hidden] { display: none; }

.lightbox, .modal { position: fixed; z-index: var(--z-lightbox); inset: 0; display: grid; place-items: center; background: var(--color-overlay-deep); padding: var(--space-4); opacity: 0; pointer-events: none; transition: opacity var(--dur-med) var(--ease-out); }
.lightbox.is-open, .modal.is-open { opacity: 1; pointer-events: auto; }
.lightbox__figure { position: relative; width: min(90vw, 72rem); }
.lightbox__figure img { width: 100%; max-height: 78vh; object-fit: contain; }
.lightbox__caption { margin-block-start: var(--space-3); color: var(--color-light); text-align: center; }
.lightbox__close, .lightbox__prev, .lightbox__next, .modal__close { position: absolute; display: grid; width: 2.8rem; height: 2.8rem; place-items: center; border: 1px solid var(--color-line-strong); border-radius: 50%; background: var(--color-panel); color: var(--color-light); cursor: pointer; }
.lightbox__close { top: -3.5rem; right: 0; }
.lightbox__prev { top: 50%; left: -4rem; transform: translateY(-50%); }
.lightbox__next { top: 50%; right: -4rem; transform: translateY(-50%); }
.modal { z-index: var(--z-modal); }
.modal__dialog { position: relative; width: min(42rem, 100%); max-height: min(80vh, 42rem); overflow: auto; border: 1px solid var(--color-line-strong); border-radius: var(--radius-md); background: var(--color-panel); padding: var(--space-6); }
.modal__close { top: var(--space-4); right: var(--space-4); }
.modal__dialog h2 { padding-inline-end: 3rem; }
.modal__dialog p { margin-block-start: var(--space-3); }

.article-index { background: var(--color-paper); color: var(--color-ink); }
.article-index p { color: var(--color-ink-soft); }
.article-index .article-card { border-color: var(--color-paper-soft); background: var(--color-paper-soft); }
.article-index .article-card a { color: var(--color-accent-strong); }
.article-meta { color: var(--color-accent-soft); font: 0.7rem/1.2 var(--font-mono); letter-spacing: 0.08em; }
.article-content { max-width: 50rem; }
.article-content h2 { margin-block: var(--space-7) var(--space-3); font-size: clamp(1.8rem, 4vw, 3rem); }
.article-content h3 { margin-block: var(--space-5) var(--space-2); font-size: 1.25rem; }
.article-content p { margin-block-start: var(--space-3); }
.article-content ul, .article-content ol { display: grid; gap: var(--space-2); margin-block: var(--space-3); padding-inline-start: 1.25rem; color: var(--color-muted); }
.article-content table { width: 100%; margin-block: var(--space-4); border-collapse: collapse; font-size: 0.9rem; }
.article-content th, .article-content td { border-bottom: 1px solid var(--color-line); padding: 0.75rem 0.5rem; text-align: left; vertical-align: top; }
.article-content th { color: var(--color-accent-soft); font-family: var(--font-mono); font-size: 0.72rem; font-weight: 500; }
.article-links { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-block-start: var(--space-6); }
.article-links a { color: var(--color-accent-soft); font-weight: 700; text-decoration: none; }

@keyframes button-sheen { 0%, 50% { left: -45%; } 76%, 100% { left: 125%; } }
@keyframes fade-up { from { opacity: 0; transform: translateY(0.75rem); } to { opacity: 1; transform: translateY(0); } }
.reveal { animation: fade-up var(--dur-slow) var(--ease-out) both; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 1ms !important; transition-duration: 1ms !important; } }

@media (min-width: 640px) {
  .site-shell { width: min(var(--max-width), calc(100% - 3rem)); }
  .info-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .info-item:nth-child(odd) { border-inline-end: 0; }
  .info-item:not(:nth-child(3n)) { border-inline-end: 1px solid var(--color-line); }
  .feature-grid, .gallery-preview, .gallery-grid, .guide-card-grid, .platform-grid, .requirements-grid, .article-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .fit-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer__columns { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 768px) {
  .hero__content { padding-block: 10rem 6rem; }
  .story-layout { grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); align-items: center; }
  .download-band__inner { grid-template-columns: minmax(0, 1fr) auto; }
  .content-layout { grid-template-columns: 13rem minmax(0, 1fr); }
}
@media (min-width: 1024px) {
  .info-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .info-item:not(:nth-child(3n)) { border-inline-end: 0; }
  .info-item:not(:last-child) { border-inline-end: 1px solid var(--color-line); }
  .feature-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .gallery-preview { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .gallery-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer__grid { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); }
}
@media (max-width: 767px) {
  .site-nav__links, .site-nav__cta { display: none; }
  .menu-toggle { display: inline-flex; padding: 0.75rem; }
  .site-nav.is-open { display: grid; grid-template-columns: 1fr auto; align-items: start; padding-bottom: var(--space-3); }
  .site-nav.is-open .site-nav__links { display: grid; grid-column: 1 / -1; justify-content: start; gap: var(--space-2); padding: var(--space-3) var(--space-4); }
  .site-nav.is-open .site-nav__links a { padding-block: 0.35rem; }
  .site-nav.is-open .site-nav__cta { display: inline-flex; grid-column: 1 / -1; margin-inline: var(--space-4); }
  .hero__content { padding-top: 8rem; }
  .chapter-nav { position: static; }
  .lightbox__prev { left: 0.5rem; }
  .lightbox__next { right: 0.5rem; }
}