@layer pages {
    .editorial-page { --editorial-width: 1320px; }
    .editorial-intro { background: linear-gradient(120deg, color-mix(in srgb, var(--accent) 8%, transparent), transparent 42%); }
    .editorial-intro h1 { max-width: 1000px; }
    .editorial-shell { width: min(100%, var(--editorial-width)); margin-inline: auto; padding-inline: var(--page-gutter); }
    .editorial-kicker,
    .editorial-section-head > span,
    .book-cover figcaption {
        color: var(--accent-ink);
        font-size: .66rem;
        font-weight: 850;
        letter-spacing: .18em;
        text-transform: uppercase;
    }

    .book-hero { padding-block: clamp(54px, 7vw, 110px); display: grid; grid-template-columns: minmax(260px, 430px) minmax(0, 1fr); align-items: center; gap: clamp(42px, 8vw, 130px); }
    .book-cover { position: relative; padding: clamp(12px, 1.5vw, 20px); border: 1px solid var(--line); background: var(--surface); box-shadow: 28px 34px 0 color-mix(in srgb, var(--accent) 10%, transparent); }
    .book-cover img { width: 100%; aspect-ratio: 2 / 3; object-fit: cover; }
    .book-cover figcaption { padding: 16px 4px 2px; color: var(--muted); }
    .book-overview h2 { margin: 18px 0 12px; font-size: clamp(3.4rem, 7vw, 7rem); }
    .book-subtitle { color: var(--text-strong); font-size: clamp(1.05rem, 1.6vw, 1.35rem); }
    .book-description { max-width: 700px; margin-top: 24px; color: var(--muted); font-size: 1.04rem; line-height: 1.75; }
    .editorial-stats { margin-top: clamp(34px, 5vw, 58px); display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-block: 1px solid var(--line); }
    .editorial-stats div { min-width: 0; padding: 20px 16px; border-right: 1px solid var(--line); }
    .editorial-stats div:first-child { padding-left: 0; }
    .editorial-stats div:last-child { border-right: 0; }
    .editorial-stats dt { color: var(--muted); font-size: .62rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
    .editorial-stats dd { margin: 6px 0 0; color: var(--text-strong); font-size: .96rem; font-weight: 750; overflow-wrap: anywhere; }
    .editorial-actions { margin-top: 34px; display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
    .editorial-text-link { color: var(--muted); font-size: .76rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
    .editorial-text-link:hover { color: var(--accent); }

    .chapter-index { padding-block: clamp(60px, 7vw, 100px); border-top: 1px solid var(--line); }
    .editorial-section-head { margin-bottom: 34px; display: grid; grid-template-columns: 1fr minmax(260px, 430px); gap: 30px; align-items: end; }
    .editorial-section-head h2 { margin-top: 13px; font-size: clamp(2.3rem, 4vw, 4.2rem); }
    .editorial-section-head p { grid-column: 2; grid-row: 1 / span 2; color: var(--muted); }
    .chapter-list { border-top: 1px solid var(--line); }
    .chapter-list > a { min-height: 112px; padding: 22px 4px; display: grid; grid-template-columns: 70px 1fr auto; align-items: center; gap: 24px; border-bottom: 1px solid var(--line); transition: padding .25s var(--ease-out), background .25s ease; }
    .chapter-list > a:hover { padding-inline: 18px; background: var(--surface); }
    .chapter-list > a > span { color: var(--accent); font-family: var(--font-display); font-size: 2rem; font-weight: 900; }
    .chapter-list strong { display: block; color: var(--text-strong); font-size: clamp(1.25rem, 2vw, 1.75rem); text-transform: uppercase; }
    .chapter-list small { display: block; margin-top: 7px; color: var(--muted); }
    .chapter-list b { color: var(--accent); font-size: 1.5rem; }

    .reader-progress { position: fixed; z-index: 1001; top: var(--header-height); left: 0; width: 100%; height: 3px; background: var(--line); }
    .reader-progress span { display: block; width: 100%; height: 100%; transform: scaleX(0); transform-origin: left; background: var(--accent); }
    .reader-shell { width: min(100%, 1020px); margin-inline: auto; padding: calc(var(--header-height) + 42px) var(--page-gutter) 90px; }
    .reader-toolbar { position: sticky; z-index: 20; top: calc(var(--header-height) + 3px); min-height: 58px; padding: 8px 14px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 16px; border: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(16px); color: var(--muted); font-size: .67rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
    .reader-toolbar > span { text-align: center; }
    .reader-toolbar > div { justify-self: end; display: flex; }
    .reader-toolbar button { width: 42px; height: 38px; border: 1px solid var(--line); background: transparent; cursor: pointer; }
    .reader-toolbar button:hover { border-color: var(--accent); color: var(--accent); }
    .reader-card { margin-top: 30px; padding: clamp(34px, 7vw, 86px); border: 1px solid var(--line); background: color-mix(in srgb, var(--surface) 86%, var(--bg)); }
    .reader-card > header { padding-bottom: clamp(32px, 5vw, 58px); border-bottom: 1px solid var(--line); }
    .reader-card > header > span { color: var(--accent-ink); font-size: .66rem; font-weight: 850; letter-spacing: .17em; }
    .reader-card h1 { max-width: 740px; margin-top: 22px; font-family: Georgia, "Times New Roman", serif; font-size: clamp(2.3rem, 5vw, 4.7rem); font-weight: 700; line-height: 1.02; letter-spacing: -.035em; text-transform: none; }
    .reader-card > header p { margin-top: 20px; color: var(--muted); font-size: .8rem; }
    .reader-content { padding-top: clamp(38px, 6vw, 70px); font-family: Georgia, "Times New Roman", serif; font-size: calc(clamp(1.08rem, 1.7vw, 1.28rem) + (var(--reader-size-step, 0) * .1rem)); line-height: 1.9; }
    .reader-content p + p { margin-top: 1.55em; }
    .reader-content p:first-child::first-letter { float: left; margin: .08em .12em 0 0; color: var(--accent); font-size: 4.6em; font-weight: 700; line-height: .72; }
    .reader-chapter-nav { min-height: 92px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 20px; color: var(--muted); font-size: .72rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
    .reader-chapter-nav > :last-child { text-align: right; }
    .reader-chapter-nav a:hover { color: var(--accent); }
    .reader-missing { padding-block: calc(var(--header-height) + 90px) 90px; }
    .reader-missing .empty-state { gap: 20px; }

    .behind-summary { padding-block: 36px; display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--line); }
    .behind-summary div { min-height: 90px; padding: 16px 28px; display: flex; align-items: center; justify-content: space-between; border-right: 1px solid var(--line); }
    .behind-summary div:first-child { padding-left: 0; }
    .behind-summary div:last-child { border-right: 0; }
    .behind-summary span { color: var(--muted); font-size: .65rem; font-weight: 850; letter-spacing: .16em; }
    .behind-summary strong { color: var(--accent); font-family: var(--font-display); font-size: 3rem; }
    .behind-feed { padding-block: clamp(56px, 7vw, 100px); display: grid; gap: 26px; }
    .behind-feed .empty-state { min-height: 460px; gap: 20px; }
    .behind-card { min-height: 330px; display: grid; grid-template-columns: minmax(280px, .82fr) 1.18fr; border: 1px solid var(--line); background: var(--surface); transition: transform .28s var(--ease-out), border-color .2s ease; }
    .behind-card:hover { transform: translateY(-5px); border-color: var(--line-strong); }
    .behind-card__media { position: relative; min-height: 330px; overflow: hidden; background: var(--bg-alt); }
    .behind-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease-out); }
    .behind-card:hover img { transform: scale(1.035); }
    .behind-card__media > b { position: absolute; top: 20px; left: 20px; min-width: 50px; padding: 10px; background: var(--bg); color: var(--accent); text-align: center; }
    .behind-card__media > span { position: absolute; inset: 0; display: grid; place-items: center; color: var(--muted); font-size: .65rem; letter-spacing: .18em; }
    .behind-card__copy { padding: clamp(28px, 5vw, 70px); display: grid; align-content: center; }
    .behind-card__copy > span { color: var(--accent-ink); font-size: .64rem; font-weight: 850; letter-spacing: .16em; }
    .behind-card__copy h2 { margin: 18px 0; font-size: clamp(2rem, 4vw, 4rem); }
    .behind-card__copy p { max-width: 650px; color: var(--muted); }
    .behind-card__copy small { margin-top: 28px; color: var(--text-strong); font-weight: 850; letter-spacing: .08em; }

    .behind-article { padding-top: var(--header-height); }
    .behind-article__hero { width: min(100%, var(--content-width)); min-height: clamp(560px, 70vh, 860px); margin-inline: auto; display: grid; grid-template-columns: 1.15fr .85fr; border-bottom: 1px solid var(--line); }
    .behind-article__hero > img { width: 100%; height: 100%; max-height: 860px; object-fit: cover; }
    .behind-article__hero > div { padding: clamp(44px, 7vw, 100px); display: grid; align-content: end; background: var(--surface); }
    .behind-article__hero--without-cover > div { grid-column: 1 / -1; }
    .behind-article__hero > div > span { color: var(--accent-ink); font-size: .66rem; font-weight: 850; letter-spacing: .16em; }
    .behind-article__hero h1 { margin: 24px 0; font-size: clamp(3rem, 6vw, 6rem); }
    .behind-article__hero p { color: var(--muted); font-size: 1.05rem; line-height: 1.7; }
    .behind-article__hero ul { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 8px; }
    .behind-article__hero li { padding: 7px 10px; border: 1px solid var(--line); color: var(--muted); font-size: .65rem; }
    .stage-list { padding-block: clamp(64px, 8vw, 120px); }
    .project-stage { display: grid; grid-template-columns: minmax(240px, .55fr) 1fr; gap: clamp(32px, 7vw, 100px); padding-block: clamp(50px, 7vw, 100px); border-bottom: 1px solid var(--line); }
    .project-stage:first-child { border-top: 1px solid var(--line); }
    .project-stage > header > span { color: var(--accent); font-size: .66rem; font-weight: 850; letter-spacing: .17em; }
    .project-stage h2 { margin-top: 18px; font-size: clamp(2rem, 4vw, 4rem); }
    .project-stage__text { color: var(--muted); font-size: 1.02rem; line-height: 1.8; }
    .project-stage__text p + p { margin-top: 1.4em; }
    .project-stage__gallery { position: relative; grid-column: 2; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 3px; min-height: 240px; margin-top: 8px; padding: 0; overflow: hidden; border: 1px solid var(--line); background: var(--bg-alt); cursor: zoom-in; }
    .project-stage__gallery img { width: 100%; height: 100%; min-height: 240px; object-fit: cover; }
    .project-stage__gallery span { position: absolute; right: 14px; bottom: 14px; padding: 10px 12px; background: var(--bg); color: var(--text-strong); font-size: .62rem; font-weight: 850; letter-spacing: .1em; }

    .faq-layout { padding-block: clamp(60px, 8vw, 110px); display: grid; gap: clamp(56px, 8vw, 110px); }
    .faq-section { display: grid; grid-template-columns: minmax(220px, .4fr) 1fr; gap: clamp(30px, 7vw, 100px); }
    .faq-section > header > span { color: var(--accent); font-family: var(--font-display); font-size: 2rem; font-weight: 900; }
    .faq-section h2 { margin-top: 14px; font-size: clamp(2rem, 3.4vw, 3.5rem); }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-list details { border-bottom: 1px solid var(--line); }
    .faq-list summary { min-height: 86px; padding: 20px 0; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 24px; color: var(--text-strong); font-size: clamp(1rem, 1.5vw, 1.2rem); font-weight: 750; cursor: pointer; list-style: none; }
    .faq-list summary::-webkit-details-marker { display: none; }
    .faq-list summary span { color: var(--accent); font-size: 1.5rem; transition: transform .2s ease; }
    .faq-list details[open] summary span { transform: rotate(45deg); }
    .faq-list details p { max-width: 780px; padding: 0 50px 30px 0; color: var(--muted); line-height: 1.75; }
    .editorial-cta { margin-bottom: clamp(60px, 8vw, 110px); padding-block: clamp(40px, 6vw, 72px); display: flex; align-items: center; justify-content: space-between; gap: 40px; border-block: 1px solid var(--line); }
    .editorial-cta span { color: var(--accent-ink); font-size: .65rem; font-weight: 850; letter-spacing: .16em; }
    .editorial-cta h2 { margin: 13px 0; font-size: clamp(2.4rem, 5vw, 5rem); }
    .editorial-cta p { color: var(--muted); }

    .changelog-list { position: relative; padding-block: clamp(60px, 8vw, 120px); }
    .changelog-entry { display: grid; grid-template-columns: minmax(180px, .34fr) 1fr; gap: clamp(34px, 7vw, 100px); padding-block: clamp(42px, 6vw, 78px); border-bottom: 1px solid var(--line); }
    .changelog-entry:first-child { border-top: 1px solid var(--line); }
    .changelog-entry__version { display: grid; align-content: start; gap: 9px; }
    .changelog-entry__version span { color: var(--muted); font-size: .61rem; font-weight: 850; letter-spacing: .16em; }
    .changelog-entry.is-current .changelog-entry__version span { color: var(--accent); }
    .changelog-entry__version strong { color: var(--text-strong); font-family: var(--font-display); font-size: clamp(2.4rem, 4vw, 4.6rem); line-height: 1; }
    .changelog-entry__version time { color: var(--muted); font-size: .7rem; }
    .changelog-entry__copy h2 { font-size: clamp(2rem, 3.5vw, 3.6rem); }
    .changelog-entry__copy > p { max-width: 760px; margin-top: 18px; color: var(--muted); font-size: 1rem; }
    .changelog-entry__copy ul { margin-top: 28px; display: grid; gap: 12px; }
    .changelog-entry__copy li { position: relative; padding-left: 24px; color: var(--text); }
    .changelog-entry__copy li::before { content: ""; position: absolute; top: .68em; left: 0; width: 9px; height: 2px; background: var(--accent); }
}

@media (max-width: 900px) {
    .book-hero,
    .behind-card,
    .behind-article__hero,
    .faq-section,
    .project-stage,
    .changelog-entry { grid-template-columns: 1fr; }
    .book-cover { width: min(100%, 430px); }
    .editorial-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .editorial-stats div:nth-child(2) { border-right: 0; }
    .editorial-stats div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
    .behind-card__media { min-height: 380px; }
    .behind-article__hero > img { max-height: 620px; }
    .project-stage__gallery { grid-column: 1; }
    .editorial-section-head { grid-template-columns: 1fr; }
    .editorial-section-head p { grid-column: 1; grid-row: auto; }
}

@media (max-width: 640px) {
    .book-hero { padding-top: 38px; gap: 52px; }
    .book-cover { box-shadow: 12px 15px 0 color-mix(in srgb, var(--accent) 10%, transparent); }
    .book-overview h2 { font-size: clamp(3.2rem, 18vw, 5rem); }
    .editorial-stats div { padding-inline: 10px; }
    .editorial-actions { align-items: stretch; }
    .editorial-text-link { padding: 14px 0; text-align: center; }
    .chapter-list > a { min-height: 96px; grid-template-columns: 44px 1fr auto; gap: 12px; }
    .chapter-list small { font-size: .69rem; }
    .reader-shell { padding-inline: 0; padding-top: var(--header-height); }
    .reader-toolbar { top: calc(var(--header-height) + 3px); border-inline: 0; grid-template-columns: 1fr auto; }
    .reader-toolbar > span { display: none; }
    .reader-card { margin-top: 0; padding: 46px var(--page-gutter) 60px; border-inline: 0; }
    .reader-chapter-nav { padding: 18px var(--page-gutter); grid-template-columns: 1fr 1fr; }
    .reader-chapter-nav > :nth-child(2) { display: none; }
    .behind-summary div { padding: 10px 12px; display: grid; gap: 8px; }
    .behind-summary strong { font-size: 2.2rem; }
    .behind-card__media { min-height: 270px; }
    .behind-card__copy { padding: 28px 24px 34px; }
    .behind-article__hero { min-height: 0; }
    .behind-article__hero > img { max-height: 420px; }
    .behind-article__hero > div { padding: 38px var(--page-gutter) 46px; }
    .project-stage__gallery { grid-template-columns: 1fr 1fr; min-height: 190px; }
    .project-stage__gallery img { min-height: 190px; }
    .project-stage__gallery img:nth-of-type(3) { display: none; }
    .faq-list summary { min-height: 76px; }
    .faq-list details p { padding-right: 0; }
    .editorial-cta { align-items: stretch; flex-direction: column; }
    .changelog-entry { gap: 26px; }
}