body .site-shell,
body .page-shell {
    width: min(100%, var(--shell-max-width));
    margin: 0 auto;
}

body .page-shell {
    padding: var(--page-shell-top) var(--page-shell-inline) var(--page-shell-bottom);
}

body.home-page #main-content {
    opacity: 0;
    visibility: hidden;
    transform: translateY(18px) scale(0.985);
    transform-origin: top center;
    width: 100%;
    overflow: visible;
}

.site-header,
header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 24px;
    position: relative;
}

body.home-page header {
    padding: 0 0 var(--header-bottom-space);
    border-bottom: none;
}

body.home-page header::after {
    content: '';
    position: absolute;
    left: calc(-1 * var(--page-shell-inline));
    right: calc(-1 * var(--page-shell-inline));
    bottom: 0;
    height: 1px;
    background: rgba(0, 0, 0, 0.08);
}

body.home-page .version-tag {
    text-align: right;
}

.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    margin-top: 0;
    padding: var(--content-start-space) 0 0;
    overflow: visible;
}

.page-stack {
    display: grid;
    gap: var(--section-gap);
}

.page-hero {
    display: grid;
    gap: var(--hero-surface-gap);
    padding-top: var(--content-start-space);
}

.page-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
    gap: clamp(26px, 4vw, 48px);
    align-items: end;
}

.page-hero-copy {
    display: grid;
    gap: 18px;
    max-width: 72ch;
}

.page-hero-copy h1 {
    font-size: clamp(2.3rem, 6vw, 4.4rem);
    line-height: 0.95;
    letter-spacing: -0.045em;
    text-transform: uppercase;
    max-width: 11ch;
}

.page-hero-side {
    display: grid;
    gap: 16px;
    justify-items: end;
}

.page-hero-side .page-meta {
    justify-content: flex-end;
}

.page-divider-wrap {
    display: grid;
    gap: 16px;
}

.portrait-top {
    position: relative;
    width: min(1180px, 100%);
    max-width: 96vw;
    margin: 0 auto;
}

.portrait-top::before {
    content: '';
    display: block;
    width: 100%;
    aspect-ratio: 1380 / 752;
    max-height: calc(100vh - 235px);
}

.future-nodes {
    width: 100%;
    margin-top: 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    position: relative;
    z-index: 5;
}

.cta-container {
    width: 100%;
    max-width: 680px;
    margin-top: 0;
    padding-top: 0;
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.cta-links {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
}

.module-note {
    width: 100%;
    position: relative;
    z-index: 5;
    text-align: left;
    font-size: 0.62rem;
    letter-spacing: 0.18em;
    color: rgba(26, 26, 29, 0.55);
    line-height: 1.9;
    margin-top: 14px;
}

body.about-page .page-shell,
body.systems-page .page-shell {
    position: relative;
    z-index: 1;
}

body.about-page header,
body.systems-page header {
    padding: 0 0 var(--header-bottom-space);
    border-bottom: 1px solid var(--line-color);
}

body.about-page .version-tag,
body.systems-page .version-tag {
    opacity: 0.45;
    text-align: right;
}

.top-nav {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 16px;
}

.systems-flow {
    display: grid;
    gap: clamp(28px, 4vw, 42px);
}

.systems-intro {
    display: grid;
    gap: 12px;
    max-width: 64ch;
}

.systems-list {
    display: grid;
    gap: clamp(28px, 4vw, 42px);
}

body.about-page .systems-list,
body.core-page .systems-list {
    gap: clamp(22px, 3vw, 34px);
}

.page-section {
    display: grid;
    gap: clamp(18px, 3vw, 26px);
}

.system-block {
    display: grid;
    gap: 18px;
}

.system-block.is-hero {
    gap: 22px;
    margin-bottom: 10px;
}

.system-block.is-system-1 {
    gap: 20px;
}

.systems-index-list {
    gap: clamp(22px, 3vw, 34px);
}

.system-index-item {
    gap: 10px;
    max-width: 56ch;
}

.system-index-item .system-title {
    font-size: clamp(1rem, 1.8vw, 1.28rem);
}

.system-copy {
    display: grid;
    gap: 12px;
    max-width: var(--reading-max-width);
}

.system-block.is-hero .system-copy {
    max-width: 68ch;
}

.system-title {
    font-size: clamp(1.16rem, 2.2vw, 1.54rem);
    line-height: 1.12;
    letter-spacing: -0.035em;
    color: var(--text-color);
}

.system-block.is-hero .system-title {
    font-size: clamp(1.26rem, 2.5vw, 1.72rem);
}

.system-highlights {
    display: grid;
    gap: 8px;
    max-width: 56ch;
}

.system-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.system-detail-shell {
    display: grid;
    gap: 24px;
    max-width: min(100%, 72ch);
}

.system-detail-template {
    gap: 18px;
}

.system-highlights li {
    list-style: none;
    position: relative;
    padding-left: 18px;
    font-size: 0.78rem;
    line-height: 1.85;
    color: var(--muted-text);
}

.system-highlights li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.85em;
    width: 8px;
    height: 1px;
    background: linear-gradient(90deg, rgba(124,77,255,0.55), rgba(0,229,255,0.55), rgba(255,64,129,0.45));
    box-shadow: 0 0 8px rgba(124, 77, 255, 0.18);
}

.system-separator {
    width: min(160px, 28%);
    height: 1px;
    background: linear-gradient(90deg, rgba(124,77,255,0.36), rgba(0,229,255,0.24), rgba(255,64,129,0.02));
    box-shadow: 0 0 10px rgba(124, 77, 255, 0.1);
}

.section-header {
    display: grid;
    gap: 10px;
    max-width: 64ch;
}

.section-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(260px, 0.85fr);
    gap: 56px;
    align-items: start;
}

.prose-flow {
    display: grid;
    gap: clamp(18px, 3vw, 26px);
    max-width: 72ch;
}

.about-page .prose-flow p:not(.prose-lede),
.core-page .prose-flow p:not(.prose-lede) {
    text-align: justify;
    text-justify: inter-word;
}

.prose-principles {
    display: grid;
    gap: 12px;
    margin: clamp(8px, 1.8vw, 16px) 0;
}

.lede {
    font-size: 0.92rem;
    color: var(--muted-text);
    max-width: 58ch;
    margin-bottom: 30px;
}

.about-copy {
    display: grid;
    gap: 18px;
    max-width: 62ch;
}

.about-copy p {
    font-size: 0.92rem;
    color: var(--muted-text);
}

.about-copy .closing {
    color: var(--text-color);
    font-weight: 500;
    margin-top: 6px;
}

body.about-page footer,
body.systems-page footer {
    margin-top: 64px;
    padding-top: 20px;
    border-top: 1px solid var(--line-color);
}

.page-closure {
    display: grid;
    gap: 16px;
    padding-top: 4px;
    max-width: 58ch;
}

.page-closure-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.sys-log {
    font-size: 0.6rem;
    line-height: 2;
    color: rgba(255, 255, 255, 0.42);
}