/* Hallmark · macrostructure: Bento Grid · tone: editorial-commerce · anchor hue: coral · nav: N12 · footer: Ft1 · contrast: pass (40–41) · slop: pass (42–45) · mobile: pass (34, 49, 50–57) */
@import url("../../tokens.css?v=20260901-2");

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; scroll-padding-top: calc(var(--nav-h) + var(--space-md)); }
body { margin: 0; min-width: 20rem; overflow-x: clip; background: var(--color-paper); color: var(--color-ink); font-family: var(--font-body); font-size: var(--text-base); line-height: 1.65; }
body.is-locked { overflow: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration-thickness: var(--rule-hair); text-underline-offset: 0.2em; }
button, a { -webkit-tap-highlight-color: var(--color-transparent); }
button, input, select { font: inherit; }
h1, h2, h3 { margin: 0; font-family: var(--font-display); font-style: normal; line-height: 1.12; letter-spacing: -0.025em; overflow-wrap: anywhere; min-width: 0; }
h1 { font-size: var(--text-display-s); font-weight: 900; }
h2 { font-size: clamp(2rem, 4vw, 3.4rem); font-weight: 900; }
h3 { font-size: var(--text-xl); font-weight: 800; }
p, ul, ol, dl, figure { margin: 0; }
:focus-visible { outline: var(--rule-strong) solid var(--color-focus); outline-offset: var(--space-2xs); }
[hidden] { display: none !important; }

.skip-link { position: fixed; inset: var(--space-sm) auto auto var(--space-sm); z-index: var(--z-toast); transform: translateY(-180%); padding: var(--space-sm) var(--space-md); background: var(--color-night); color: var(--color-paper); transition: transform var(--dur-short) var(--ease-out); }
.skip-link:focus { transform: none; }
.shell { width: min(calc(100% - 2 * var(--page-gutter)), var(--page-max)); margin-inline: auto; }
.section { padding-block: var(--space-3xl); }
.section--tight { padding-block: var(--space-2xl); }
.section--paper-2 { background: var(--color-paper-2); }
.section--night { background: var(--color-night); color: var(--color-paper); }
.section-head { display: block; margin-bottom: var(--space-xl); }
.section-head p { max-width: 35rem; color: var(--color-muted); }
.section-head > p { margin-top: var(--space-md); }
.section--night .section-head p { color: var(--color-rule); }
.section--night .section-label { color: var(--color-gold); }
.section-label { display: inline-block; margin-bottom: var(--space-sm); color: var(--color-accent-hover); font-size: var(--text-sm); font-weight: 800; letter-spacing: 0.08em; }
.lede { max-width: 64ch; font-size: var(--text-md); color: var(--color-ink-2); }
.muted { color: var(--color-muted); }

.site-nav { position: fixed; inset: 0 0 auto; z-index: var(--z-nav); transform: translateY(0); transition: transform var(--dur-long) var(--ease-out); }
.site-nav.is-compact { transform: translateY(calc(var(--banner-h) * -1)); }
.site-nav.is-dismissed { transform: none; }
.site-nav.is-dismissed .announcement { display: none; }
.announcement { height: var(--banner-h); display: flex; align-items: center; justify-content: center; gap: var(--space-sm); padding-inline: var(--page-gutter); background: var(--color-night); color: var(--color-paper); font-size: var(--text-sm); }
.announcement a { display: inline-flex; align-items: center; min-height: var(--tap-size); color: var(--color-gold); font-weight: 700; white-space: nowrap; }
.announcement__close { min-width: var(--tap-size); min-height: var(--tap-size); margin-left: auto; border: 0; background: var(--color-transparent); color: inherit; cursor: pointer; }
.nav-bar { min-height: var(--nav-h); background: var(--color-paper); border-bottom: var(--rule-hair) solid var(--color-rule); }
.nav-inner { min-height: var(--nav-h); display: grid; grid-template-columns: minmax(0, auto) minmax(0, 1fr) auto; align-items: center; gap: var(--space-lg); }
.brand { display: inline-flex; align-items: center; min-height: var(--tap-size); font-family: var(--font-display); font-weight: 900; text-decoration: none; white-space: nowrap; }
.nav-links { display: flex; justify-content: center; gap: clamp(var(--space-sm), 2vw, var(--space-lg)); list-style: none; padding: 0; }
.nav-links a { display: inline-flex; align-items: center; min-height: var(--tap-size); font-weight: 700; text-decoration: none; white-space: nowrap; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--color-accent-hover); }
.nav-toggle { display: none; min-width: var(--tap-size); min-height: var(--tap-size); border: var(--rule-hair) solid var(--color-rule); border-radius: var(--radius-sm); background: var(--color-paper); color: var(--color-ink); cursor: pointer; }
.mobile-menu { border-bottom: var(--rule-hair) solid var(--color-rule); background: var(--color-paper); padding: var(--space-sm) var(--page-gutter) var(--space-md); }
.mobile-menu a { display: flex; align-items: center; min-height: var(--tap-size); border-bottom: var(--rule-hair) solid var(--color-rule-2); font-weight: 700; text-decoration: none; white-space: nowrap; }

.btn { position: relative; isolation: isolate; display: inline-flex; align-items: center; justify-content: center; gap: var(--space-xs); min-height: var(--tap-size); padding: var(--space-sm) var(--space-lg); overflow: clip; border: var(--rule-strong) solid var(--color-transparent); border-radius: var(--radius-sm); font-weight: 900; line-height: 1.15; text-decoration: none; white-space: nowrap; cursor: pointer; transition: transform var(--dur-micro) var(--ease-out), background-color var(--dur-micro) var(--ease-out), color var(--dur-micro) var(--ease-out), border-color var(--dur-micro) var(--ease-out); }
.btn::after { content: ""; position: absolute; z-index: -1; inset: -60% auto -60% -35%; width: 24%; transform: skewX(-20deg) translateX(-240%); background: var(--color-sheen); }
.btn:hover::after, .btn:focus-visible::after { animation: sheen var(--dur-long) var(--ease-out) 1; }
.btn:hover { transform: translateY(-0.125rem); }
.btn:active { transform: translateY(0); }
.btn--primary { background: var(--color-accent); color: var(--color-accent-ink); }
.btn--primary:hover { background: var(--color-accent-hover); color: var(--color-paper); }
.btn--secondary { border-color: var(--color-rule); background: var(--color-paper); color: var(--color-ink); }
.btn--secondary:hover { border-color: var(--color-accent); color: var(--color-accent-hover); }
.btn--night { border-color: var(--color-gold); background: var(--color-gold); color: var(--color-night); }
.btn--night:hover { background: var(--color-paper); border-color: var(--color-paper); }
.btn[aria-disabled="true"], .btn:disabled { opacity: 0.48; pointer-events: none; }
.btn[aria-busy="true"], .btn.is-loading { cursor: wait; }
.btn.is-error { border-color: var(--color-error); background: var(--color-paper); color: var(--color-error); }
.btn.is-success { background: var(--color-success); color: var(--color-paper); }
@keyframes sheen { to { transform: skewX(-20deg) translateX(720%); } }

.hero { position: relative; min-height: clamp(44rem, 88dvh, 58rem); display: grid; align-items: end; padding-top: calc(var(--banner-h) + var(--nav-h)); background: var(--color-night); color: var(--color-paper); }
.hero__backdrop { position: absolute; inset: 0; overflow: hidden; }
.hero__backdrop img { width: 100%; height: 100%; object-fit: cover; object-position: center; filter: saturate(0.82) contrast(1.04); animation: hero-breathe 18s var(--ease-in-out) infinite alternate; }
.hero__backdrop::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, var(--color-overlay-strong), var(--color-overlay) 48%, var(--color-overlay-soft)); }
.hero__content { position: relative; z-index: var(--z-raised); display: grid; grid-template-columns: minmax(0, 0.56fr) minmax(20rem, 0.44fr); gap: var(--space-xl); align-items: end; padding-block: var(--space-lg) var(--space-xl); }
.hero__story { align-self: end; max-width: 42rem; }
.hero__logo { width: min(24rem, 74vw); margin-bottom: var(--space-lg); filter: drop-shadow(0 0.5rem 1rem var(--color-overlay)); }
.hero__kicker { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-bottom: var(--space-md); }
.chip { display: inline-flex; align-items: center; min-height: 2rem; padding: var(--space-2xs) var(--space-sm); border: var(--rule-hair) solid currentColor; border-radius: var(--radius-pill); font-size: var(--text-sm); font-weight: 800; white-space: nowrap; }
.hero h1 { max-width: 12ch; text-shadow: 0 0.25rem 1rem var(--color-overlay); }
.hero__title-ja { display: block; margin-top: var(--space-xs); font-family: var(--font-body); font-size: var(--text-md); font-weight: 500; letter-spacing: 0.04em; }
.dialogue { margin-top: var(--space-lg); padding: var(--space-lg); border: var(--rule-hair) solid var(--color-rule-on-dark); background: var(--color-overlay-strong); backdrop-filter: blur(0.5rem); }
.dialogue__name { display: inline-block; margin-bottom: var(--space-xs); color: var(--color-gold); font-weight: 900; }
.dialogue p { max-width: 58ch; font-size: var(--text-md); }
.choice-row { display: flex; flex-wrap: wrap; gap: var(--space-sm); margin-top: var(--space-lg); }
.hero__sheet { padding: var(--space-lg); background: var(--color-paper); color: var(--color-ink); border-top: 0.25rem solid var(--color-accent); box-shadow: var(--shadow-card); }
.hero__sheet-head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-md); padding-bottom: var(--space-md); border-bottom: var(--rule-hair) solid var(--color-rule); }
.hero__sheet-head strong { font-size: var(--text-lg); }
.hero__sheet-head span { color: var(--color-palm); font-weight: 900; }
.hero-facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-block: var(--space-md); }
.hero-facts div { min-width: 0; padding: var(--space-sm); border-bottom: var(--rule-hair) solid var(--color-rule-2); }
.hero-facts div:nth-child(even) { border-inline-start: var(--rule-hair) solid var(--color-rule); }
.hero-facts dt { color: var(--color-muted); font-size: var(--text-sm); }
.hero-facts dd { margin: var(--space-2xs) 0 0; font-weight: 900; overflow-wrap: anywhere; }
.hero__sheet .btn { width: 100%; }
.hero__trust { margin-top: var(--space-sm); color: var(--color-muted); font-size: var(--text-sm); }
@keyframes hero-breathe { from { transform: scale(1.02); } to { transform: scale(1.05); } }

.info-bento { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--space-md); }
.info-card { min-width: 0; padding: var(--space-lg); background: var(--color-paper); border-top: var(--rule-strong) solid var(--color-rule); box-shadow: 0 var(--rule-hair) 0 var(--color-rule-2); }
.info-card:nth-child(1), .info-card:nth-child(5) { grid-column: span 4; }
.info-card:nth-child(2), .info-card:nth-child(3), .info-card:nth-child(4) { grid-column: span 2; }
.info-card:nth-child(6) { grid-column: span 4; }
.info-card dt { color: var(--color-muted); font-size: var(--text-sm); }
.info-card dd { margin: var(--space-xs) 0 0; font-size: var(--text-md); font-weight: 900; overflow-wrap: anywhere; }

.story-grid { display: grid; grid-template-columns: minmax(0, 0.44fr) minmax(0, 0.56fr); align-items: stretch; }
.story-copy { display: grid; align-content: center; gap: var(--space-lg); padding: clamp(var(--space-xl), 6vw, var(--space-3xl)); background: var(--color-night); color: var(--color-paper); }
.story-copy p { max-width: 60ch; color: var(--color-rule); }
.story-visual { min-height: 34rem; }
.story-visual img { width: 100%; height: 100%; object-fit: cover; object-position: center top; }

.feature-grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--space-md); }
.feature { min-width: 0; padding: var(--space-xl); border-top: var(--rule-strong) solid var(--color-sea); background: var(--color-paper); transition: transform var(--dur-short) var(--ease-out), box-shadow var(--dur-short) var(--ease-out); }
.feature:nth-child(1), .feature:nth-child(4) { grid-column: span 7; }
.feature:nth-child(2), .feature:nth-child(3) { grid-column: span 5; }
.feature:hover { transform: translateY(-0.25rem); box-shadow: var(--shadow-tight); }
.feature__mark { display: block; margin-bottom: var(--space-lg); color: var(--color-sea-deep); font-weight: 900; }
.feature h3 { margin-bottom: var(--space-sm); }
.feature p { max-width: 58ch; color: var(--color-muted); }

.character-grid { display: grid; grid-template-columns: repeat(10, minmax(0, 1fr)); gap: var(--space-md); }
.character { position: relative; min-width: 0; min-height: 28rem; overflow: hidden; background: var(--color-night-2); color: var(--color-paper); }
.character:nth-child(1), .character:nth-child(2) { grid-column: span 5; }
.character:nth-child(n+3) { grid-column: span 3; }
.character:nth-child(5) { grid-column: 7 / span 4; }
.character img { width: 100%; height: 100%; object-fit: cover; object-position: center top; transition: transform var(--dur-long) var(--ease-out); }
.character:hover img { transform: scale(1.025); }
.character__copy { position: absolute; inset: auto 0 0; padding: var(--space-xl) var(--space-lg) var(--space-lg); background: linear-gradient(0deg, var(--color-overlay-strong), var(--color-overlay-clear)); }
.character__copy h3 { margin-bottom: var(--space-xs); }
.character__copy p { color: var(--color-rule); }

.gallery-mosaic { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--space-md); }
.gallery-item { position: relative; grid-column: span 6; min-width: 0; aspect-ratio: 16 / 10; overflow: hidden; border: 0; padding: 0; background: var(--color-night); color: var(--color-paper); cursor: zoom-in; }
.gallery-item--portrait { grid-column: span 3; aspect-ratio: 3 / 4; }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--dur-short) var(--ease-out), opacity var(--dur-short) var(--ease-out); }
.gallery-item:hover img { transform: scale(1.025); opacity: 0.88; }
.gallery-item span { position: absolute; inset: auto var(--space-sm) var(--space-sm); padding: var(--space-xs) var(--space-sm); background: var(--color-overlay-strong); font-weight: 800; }
.gallery-actions { display: flex; justify-content: flex-end; margin-top: var(--space-lg); }

.timeline { display: grid; gap: 0; max-width: 62rem; }
.timeline article { display: grid; grid-template-columns: 9rem minmax(0, 1fr); gap: var(--space-xl); padding-block: var(--space-lg); border-top: var(--rule-hair) solid var(--color-rule); }
.timeline time { font-weight: 900; color: var(--color-accent-hover); font-variant-numeric: tabular-nums; }
.timeline h3 { margin-bottom: var(--space-xs); }

.fit-grid { display: grid; grid-template-columns: 1.15fr 0.85fr 1fr; gap: var(--space-md); }
.fit-card { padding: var(--space-xl); border: var(--rule-hair) solid var(--color-rule); background: var(--color-paper); }
.fit-card:nth-child(2) { transform: translateY(var(--space-lg)); }
.fit-card h3 { margin-bottom: var(--space-sm); }
.fit-card p { color: var(--color-muted); }

.accordion { border-top: var(--rule-hair) solid var(--color-rule); }
.accordion__item { border-bottom: var(--rule-hair) solid var(--color-rule); }
.accordion__button { width: 100%; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-md); align-items: center; min-height: 4.25rem; border: 0; padding: var(--space-md) 0; background: var(--color-transparent); color: var(--color-ink); text-align: left; font-weight: 900; cursor: pointer; }
.accordion__button::after { content: "+"; font-size: var(--text-xl); font-weight: 400; }
.accordion__button[aria-expanded="true"]::after { content: "−"; }
.accordion__panel { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--dur-long) var(--ease-in-out), opacity var(--dur-short) var(--ease-out); opacity: 0; }
.accordion__button[aria-expanded="true"] + .accordion__panel { grid-template-rows: 1fr; opacity: 1; }
.accordion__panel > div { overflow: hidden; }
.accordion__panel p { max-width: 70ch; padding: 0 0 var(--space-lg); color: var(--color-muted); }

.final-cta { display: grid; grid-template-columns: minmax(0, 0.62fr) minmax(0, 0.38fr); gap: var(--space-xl); align-items: end; }
.final-cta p { max-width: 58ch; margin-top: var(--space-md); color: var(--color-rule); }
.final-cta__actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: var(--space-sm); }

.site-footer { padding-block: var(--space-2xl) calc(var(--space-3xl) + var(--tap-size)); background: var(--color-paper-2); border-top: var(--rule-hair) solid var(--color-rule); }
.footer-mast { display: grid; grid-template-columns: minmax(0, 0.42fr) minmax(0, 0.58fr); gap: var(--space-xl); }
.footer-wordmark { font-family: var(--font-display); font-size: clamp(2.2rem, 6vw, 5rem); font-weight: 900; line-height: 1; letter-spacing: -0.04em; overflow-wrap: anywhere; }
.footer-tagline { max-width: 30rem; margin-top: var(--space-md); color: var(--color-muted); }
.footer-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-xl); }
.footer-links h2 { margin-bottom: var(--space-sm); font-family: var(--font-body); font-size: var(--text-sm); letter-spacing: 0.08em; }
.footer-links ul { list-style: none; padding: 0; }
.footer-links a { display: inline-flex; align-items: center; min-height: var(--tap-size); white-space: nowrap; }
.footer-legal { grid-column: 1 / -1; display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-md); padding-top: var(--space-lg); border-top: var(--rule-hair) solid var(--color-rule); color: var(--color-muted); font-size: var(--text-sm); }

.sticky-cta { position: fixed; z-index: var(--z-sticky); inset: auto 0 0; display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); min-height: 4rem; padding: var(--space-xs) max(var(--page-gutter), env(safe-area-inset-right)) calc(var(--space-xs) + env(safe-area-inset-bottom)) max(var(--page-gutter), env(safe-area-inset-left)); border-top: var(--rule-hair) solid var(--color-rule); background: var(--color-paper); box-shadow: 0 -0.5rem 2rem var(--color-shadow); }
.sticky-cta strong { white-space: nowrap; }

.lightbox { position: fixed; z-index: var(--z-modal); inset: 0; display: grid; grid-template-columns: auto minmax(0, 1fr) auto; place-items: center; gap: var(--space-md); padding: var(--space-lg); background: var(--color-overlay-strong); color: var(--color-paper); opacity: 0; pointer-events: none; transition: opacity var(--dur-long) var(--ease-out); }
.lightbox.is-open { opacity: 1; pointer-events: auto; }
.lightbox__figure { max-width: min(78rem, 82vw); max-height: 84dvh; display: grid; place-items: center; gap: var(--space-sm); }
.lightbox__image { max-width: 100%; max-height: 76dvh; object-fit: contain; box-shadow: var(--shadow-card); }
.lightbox__caption { text-align: center; }
.lightbox__close, .lightbox__arrow { min-width: var(--tap-size); min-height: var(--tap-size); border: var(--rule-hair) solid var(--color-rule); background: var(--color-night); color: var(--color-paper); cursor: pointer; }
.lightbox__close { position: absolute; inset: var(--space-md) var(--space-md) auto auto; }

.page-hero { padding-block: calc(var(--banner-h) + var(--nav-h) + var(--space-3xl)) var(--space-2xl); background: var(--color-night); color: var(--color-paper); }
.page-hero .section-label { color: var(--color-accent); }
.page-hero__grid { display: grid; grid-template-columns: minmax(0, 0.65fr) minmax(0, 0.35fr); gap: var(--space-xl); align-items: end; }
.page-hero p { max-width: 58ch; margin-top: var(--space-md); color: var(--color-rule); }
.page-hero__meta { padding: var(--space-lg); border: var(--rule-hair) solid var(--color-gold-deep); }
.page-hero__meta strong { color: var(--color-gold); }

.filter-tabs { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-bottom: var(--space-lg); }
.filter-tab { min-height: var(--tap-size); padding: var(--space-xs) var(--space-md); border: var(--rule-hair) solid var(--color-rule); border-radius: var(--radius-pill); background: var(--color-paper); color: var(--color-ink); font-weight: 800; cursor: pointer; }
.filter-tab:hover, .filter-tab[aria-selected="true"] { border-color: var(--color-accent); color: var(--color-accent-hover); }
.gallery-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-md); }
.gallery-grid .gallery-item { grid-column: auto; aspect-ratio: 4 / 3; }
.gallery-grid .gallery-item[data-category="角色"] { aspect-ratio: 3 / 4; }

.platform-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--space-md); }
.platform-card { position: relative; padding: var(--space-xl); border: var(--rule-hair) solid var(--color-rule); background: var(--color-paper); }
.platform-card--featured { border-top: 0.25rem solid var(--color-accent); box-shadow: var(--shadow-card); }
.platform-card__badge { position: absolute; inset: var(--space-sm) var(--space-sm) auto auto; color: var(--color-accent-hover); font-weight: 900; }
.platform-card h2 { margin-bottom: var(--space-md); font-size: var(--text-2xl); }
.platform-card p { margin-bottom: var(--space-lg); color: var(--color-muted); }
.install-steps { counter-reset: install; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-md); }
.install-steps li { counter-increment: install; list-style: none; padding: var(--space-xl); border-top: var(--rule-strong) solid var(--color-sea); background: var(--color-paper); }
.install-steps li::before { content: counter(install, decimal-leading-zero); display: block; margin-bottom: var(--space-lg); color: var(--color-sea-deep); font-weight: 900; }
.install-steps h3 { margin-bottom: var(--space-sm); }
.compat-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-md); }
.compat-card { padding: var(--space-xl); background: var(--color-night); color: var(--color-paper); }
.compat-card h3 { margin-bottom: var(--space-md); color: var(--color-gold); }
.compat-card dl div { display: grid; grid-template-columns: 8rem minmax(0, 1fr); gap: var(--space-sm); padding-block: var(--space-sm); border-top: var(--rule-hair) solid var(--color-night-2); }
.compat-card dd { margin: 0; }

.guide-layout { display: grid; grid-template-columns: 17rem minmax(0, 1fr); gap: var(--space-xl); align-items: start; }
.guide-toc { position: sticky; top: calc(var(--nav-h) + var(--space-lg)); padding: var(--space-lg); background: var(--color-paper-2); border-top: var(--rule-strong) solid var(--color-accent); }
.guide-toc h2 { margin-bottom: var(--space-sm); font-family: var(--font-body); font-size: var(--text-md); }
.guide-toc ol { padding-left: var(--space-lg); }
.guide-toc a { display: inline-flex; align-items: center; min-height: var(--tap-size); }
.guide-content { min-width: 0; }
.guide-card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-md); margin-bottom: var(--space-2xl); }
.guide-card { padding: var(--space-lg); border: var(--rule-hair) solid var(--color-rule); background: var(--color-paper); }
.guide-card h3 { margin-bottom: var(--space-xs); }
.guide-card p { color: var(--color-muted); }
.guide-card a { display: inline-flex; margin-top: var(--space-md); font-weight: 900; color: var(--color-accent-hover); }
.guide-chapter { scroll-margin-top: calc(var(--nav-h) + var(--space-lg)); padding-block: var(--space-xl); border-top: var(--rule-hair) solid var(--color-rule); }
.guide-chapter h2 { margin-bottom: var(--space-md); font-size: var(--text-2xl); }
.guide-chapter h3 { margin-block: var(--space-lg) var(--space-sm); font-family: var(--font-body); font-size: var(--text-lg); }
.guide-chapter p, .guide-chapter li { max-width: 72ch; color: var(--color-ink-2); }
.guide-chapter ol, .guide-chapter ul { display: grid; gap: var(--space-sm); padding-left: var(--space-lg); }
.guide-table-wrap { overflow-x: auto; }
.guide-table { width: 100%; min-width: 38rem; border-collapse: collapse; }
.guide-table th, .guide-table td { padding: var(--space-sm); border-bottom: var(--rule-hair) solid var(--color-rule); text-align: left; vertical-align: top; }
.guide-table th { background: var(--color-paper-2); }
.callout { margin-block: var(--space-lg); padding: var(--space-lg); border-left: 0.25rem solid var(--color-sea); background: var(--color-paper-2); }

.back-to-top { position: fixed; z-index: var(--z-sticky); inset: auto var(--space-md) calc(4.5rem + env(safe-area-inset-bottom)) auto; width: var(--tap-size); height: var(--tap-size); border: var(--rule-hair) solid var(--color-rule); border-radius: var(--radius-pill); background: var(--color-paper); color: var(--color-ink); opacity: 0; pointer-events: none; transform: translateY(var(--space-sm)); transition: transform var(--dur-short) var(--ease-out), opacity var(--dur-short) var(--ease-out); cursor: pointer; }
.back-to-top.is-visible { opacity: 1; pointer-events: auto; transform: none; }

button:active, [role="button"]:active { transform: translateY(var(--space-3xs)); }
button:disabled, button[aria-disabled="true"] { opacity: 0.5; cursor: not-allowed; pointer-events: none; }
button.is-loading, button[aria-busy="true"] { cursor: wait; opacity: 0.72; }
button.is-error { border-color: var(--color-error); color: var(--color-error); }
button.is-success { border-color: var(--color-success); color: var(--color-success); }

@media (max-width: 64rem) {
  .nav-links { display: none; }
  .nav-inner { grid-template-columns: minmax(0, 1fr) auto auto; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .hero__content, .page-hero__grid, .final-cta, .footer-mast { grid-template-columns: minmax(0, 1fr); }
  .hero { min-height: 0; }
  .hero__content { padding-top: var(--space-3xl); }
  .hero__story { max-width: none; }
  .hero__sheet { width: min(100%, 42rem); }
  .story-grid { grid-template-columns: minmax(0, 1fr); }
  .story-visual { min-height: 30rem; order: -1; }
  .feature:nth-child(n), .info-card:nth-child(n) { grid-column: span 6; }
  .character:nth-child(n) { grid-column: span 5; }
  .gallery-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .guide-layout { grid-template-columns: minmax(0, 1fr); }
  .guide-toc { position: static; }
  .final-cta__actions { justify-content: flex-start; }
}

@media (max-width: 48rem) {
  .section { padding-block: var(--space-2xl); }
  .announcement { justify-content: flex-start; }
  .announcement span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .hero__content { grid-template-columns: minmax(0, 1fr); gap: var(--space-md); }
  .hero__backdrop img { animation: none; transform: scale(1.02); }
  .hero__backdrop::after { background: var(--color-overlay-strong); }
  .dialogue { backdrop-filter: none; }
  .info-card:nth-child(n), .feature:nth-child(n) { grid-column: span 12; }
  .character-grid { grid-template-columns: minmax(0, 1fr); }
  .character:nth-child(n) { grid-column: auto; min-height: 34rem; }
  .gallery-item, .gallery-item--portrait { grid-column: span 6; aspect-ratio: 4 / 3; }
  .gallery-item--portrait { aspect-ratio: 3 / 4; }
  .fit-grid, .platform-grid, .compat-grid { grid-template-columns: minmax(0, 1fr); }
  .fit-card:nth-child(2) { transform: none; }
  .install-steps { grid-template-columns: minmax(0, 1fr); padding: 0; }
  .timeline article { grid-template-columns: minmax(0, 1fr); gap: var(--space-xs); }
  .gallery-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .guide-card-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-links { grid-template-columns: minmax(0, 1fr); gap: var(--space-lg); }
  .lightbox { grid-template-columns: minmax(0, 1fr); padding: var(--space-sm); }
  .lightbox__arrow { position: absolute; inset: auto auto var(--space-md) var(--space-md); }
  .lightbox__arrow[data-next] { inset: auto var(--space-md) var(--space-md) auto; }
  .lightbox__figure { max-width: 96vw; }
}

@media (max-width: 30rem) {
  .announcement a { display: none; }
  .nav-inner > .btn { display: none; }
  .nav-inner { grid-template-columns: minmax(0, 1fr) auto; }
  .hero-facts { grid-template-columns: minmax(0, 1fr); }
  .choice-row .btn, .final-cta__actions .btn { width: 100%; }
  .gallery-item, .gallery-item--portrait { grid-column: span 12; }
  .gallery-grid { grid-template-columns: minmax(0, 1fr); }
  .sticky-cta span { display: none; }
  .sticky-cta .btn { width: 100%; }
  .compat-card dl div { grid-template-columns: minmax(0, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 150ms !important; animation-iteration-count: 1 !important; transition-duration: 150ms !important; }
  .hero__backdrop img { animation: none; transform: none; }
  .btn::after { animation: none !important; }
  .feature:hover, .btn:hover, .character:hover img, .gallery-item:hover img { transform: none; }
}