:root {
    color-scheme: light;
    --scw-paper: #f3f6f1;
    --scw-ink: #2b2528;
    --scw-muted: #67626a;
    --scw-accent: #6f5aa7;
    --scw-highlight: #d2e4e0;
    --scw-rule: #c8d1cb;
    --scw-white: #fffefb;
    --scw-serif: "Segoe UI", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--scw-paper);
    color: var(--scw-ink);
    font-family: var(--scw-serif);
    line-height: 1.75;
}
a { color: var(--scw-accent); text-underline-offset: .18em; }
a:hover { color: #4d3c7b; }
img { display: block; max-inline-size: 100%; block-size: auto; }
h1, h2, h3, p, figure { margin-block-start: 0; }
h1, h2, h3 { line-height: 1.28; }

.scw-site-header {
    border-bottom: 1px solid var(--scw-rule);
    background: var(--scw-white);
}
.scw-brand-plaque {
    max-width: 1420px;
    margin-inline: auto;
    padding: 1.1rem clamp(1rem, 4vw, 3.5rem) .8rem;
    display: flex;
    align-items: baseline;
    gap: 1rem;
}
.scw-wordmark {
    color: var(--scw-ink);
    font-size: 1.45rem;
    font-weight: 750;
    letter-spacing: .04em;
    text-decoration: none;
}
.scw-brand-caption { color: var(--scw-muted); font-size: .9rem; }
.scw-global-nav {
    max-width: 1420px;
    margin-inline: auto;
    padding: 0 clamp(1rem, 4vw, 3.5rem) .9rem;
}
.scw-nav-rail {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: .35rem .7rem;
}
.scw-nav-rail a {
    display: block;
    padding: .28rem .55rem;
    border-radius: 999px;
    color: var(--scw-ink);
    font-size: .84rem;
    text-decoration: none;
}
.scw-nav-rail a:hover, .scw-nav-rail a:focus-visible {
    background: var(--scw-highlight);
    outline: none;
}
.scw-home-canvas, .scw-about-atlas, .scw-news-chronicle,
.scw-data-sheet, .scw-language-edition, .scw-mobile-edition {
    max-width: 1420px;
    margin-inline: auto;
    padding: 2.2rem clamp(1rem, 4vw, 3.5rem) 4rem;
}
.scw-home-canvas > h1 {
    max-width: 22ch;
    margin: 0 0 1.6rem 15rem;
    font-size: clamp(1.8rem, 4vw, 3.1rem);
    letter-spacing: -.035em;
}
.scw-ledger-layout {
    display: grid;
    grid-template-columns: 12.2rem minmax(0, 1fr);
    gap: clamp(1.5rem, 4vw, 4.6rem);
    align-items: start;
}
.scw-section-index {
    position: sticky;
    top: 1rem;
    align-self: start;
    border-top: 4px solid var(--scw-accent);
    padding: 1rem .2rem;
}
.scw-section-index h2 {
    margin: 0 0 .75rem;
    font-size: .95rem;
}
.scw-section-index ul {
    margin: 0;
    padding: 0;
    list-style: none;
}
.scw-section-index li + li { border-top: 1px solid var(--scw-rule); }
.scw-section-index a {
    display: block;
    padding: .42rem 0;
    color: var(--scw-ink);
    font-size: .88rem;
    text-decoration: none;
}
.scw-page-flow { min-width: 0; }
.scw-opening-note {
    border-left: 5px solid var(--scw-accent);
    padding: .15rem 0 .15rem 1.35rem;
    margin: 0 0 3rem;
    max-width: 76ch;
    font-size: 1.04rem;
}
.scw-opening-note p { margin: 0; }
.scw-page-flow > section {
    margin-block: 2.4rem 3.5rem;
    padding-block: 1.35rem 2rem;
    border-top: 1px solid var(--scw-rule);
}
.scw-section-head { margin-bottom: 1.25rem; }
.scw-section-head h2 { margin-bottom: .5rem; font-size: clamp(1.35rem, 2.5vw, 2rem); }
.scw-section-head > p:last-child { max-width: 72ch; color: var(--scw-muted); }
.scw-section-kicker {
    margin: 0 0 .35rem;
    color: var(--scw-accent);
    font-size: .82rem;
    letter-spacing: .09em;
}
.scw-about-ledger {
    display: grid;
    grid-template-columns: minmax(8rem, .7fr) minmax(0, 2fr);
    gap: 1.5rem;
    background: var(--scw-highlight);
    padding: clamp(1.2rem, 3vw, 2.2rem);
}
.scw-section-index:not(aside) { position: static; }
.scw-about-ledger .scw-section-index {
    position: static;
    border-top: 0;
    border-right: 1px solid #aebdb7;
    padding: 0 1rem 0 0;
}
.scw-section-index span { display: block; color: var(--scw-muted); font-size: .86rem; }
.scw-section-index span + span { margin-top: .55rem; color: var(--scw-ink); }
.scw-about-copy h2 { font-size: 1.45rem; }
.scw-about-copy p:last-child { margin-bottom: 0; }
.scw-news-masonry {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}
.scw-news-slip {
    background: var(--scw-white);
    border: 1px solid var(--scw-rule);
    padding: 1.15rem;
    min-width: 0;
}
.scw-news-slip:nth-child(1), .scw-news-slip:nth-child(4) { grid-column: span 2; }
.scw-news-slip time, .scw-timeline-entry time {
    display: block;
    color: var(--scw-muted);
    font-size: .82rem;
    margin-bottom: .35rem;
}
.scw-news-slip h3 { margin: 0 0 .6rem; font-size: 1.15rem; }
.scw-news-slip p { margin: .7rem 0; }
.scw-read-link { font-size: .9rem; }
.scw-faq-register {
    display: grid;
    grid-template-columns: 8.5rem minmax(0, 1fr);
    gap: 2rem;
}
.scw-vertical-title { border-right: 1px solid var(--scw-rule); }
.scw-vertical-title h2 { font-size: 1.3rem; }
.scw-vertical-title p { color: var(--scw-muted); font-size: .85rem; }
.scw-faq-stack details, .scw-about-faq details, .scw-news-faq details, .scw-data-faq details {
    border-top: 1px solid var(--scw-rule);
    padding: .9rem 0;
}
.scw-faq-stack details:last-child, .scw-about-faq details:last-child,
.scw-news-faq details:last-child, .scw-data-faq details:last-child { border-bottom: 1px solid var(--scw-rule); }
.scw-faq-stack summary, .scw-about-faq summary, .scw-news-faq summary, .scw-data-faq summary {
    cursor: pointer;
    font-weight: 700;
}
.scw-faq-stack p, .scw-about-faq p, .scw-news-faq p, .scw-data-faq p {
    max-width: 82ch;
    margin: .75rem 0 0;
}
.scw-contrast-columns {
    display: grid;
    grid-template-columns: 1.15fr .85fr;
    gap: 1rem;
}
.scw-contrast-column {
    min-height: 12rem;
    padding: 1.4rem;
    background: var(--scw-white);
    border-top: 4px solid var(--scw-rule);
}
.scw-contrast-column--accent {
    background: #e9e4f3;
    border-color: var(--scw-accent);
}
.scw-contrast-column h3 { margin-bottom: .55rem; }
.scw-contrast-column p { margin: 0; }
.scw-table-wrap, .scw-data-table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; text-align: left; }
th, td { border-bottom: 1px solid var(--scw-rule); padding: .7rem .75rem; vertical-align: top; }
thead th { background: #e7ece7; }
.scw-table-note { margin: .8rem 0 0; color: var(--scw-muted); font-size: .9rem; }
.scw-image-rail, .scw-about-mosaic, .scw-data-visuals,
.scw-edition-gallery, .scw-mobile-gallery {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: .8rem;
    align-items: center;
}
.scw-sheet-image, .scw-inner-image {
    min-height: 8rem;
    display: grid;
    place-items: center;
    padding: .5rem;
    background: var(--scw-white);
    border: 1px solid var(--scw-rule);
}
.scw-sheet-image img, .scw-inner-image img {
    inline-size: auto;
    max-inline-size: 100%;
    max-block-size: 13rem;
    object-fit: contain;
}
.scw-reference-board > p:last-child { margin: 1rem 0 0; max-width: 75ch; }
.scw-competition-columns {
    display: grid;
    grid-template-columns: 1.4fr .6fr;
    gap: 1rem;
}
.scw-competition-columns article {
    padding: 1.2rem;
    background: var(--scw-white);
    border-left: 3px solid var(--scw-accent);
}
.scw-competition-columns h3 { margin-bottom: .4rem; }
.scw-competition-columns p { margin: 0; }
.scw-feature-row {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border: 1px solid var(--scw-rule);
    background: var(--scw-white);
}
.scw-feature-row > div { padding: 1rem; }
.scw-feature-row > div + div { border-left: 1px solid var(--scw-rule); }
.scw-feature-row strong { color: var(--scw-accent); }
.scw-feature-row p { margin: .45rem 0 0; }
.scw-feature-summary { margin: 1rem 0 0; }
.scw-editorial-intro {
    max-width: 76ch;
    border-left: 2px solid var(--scw-accent);
    padding-left: 1rem;
}
.scw-discussion-board { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.scw-discussion-note {
    background: #e6ece7;
    padding: 1.15rem;
    border-radius: 0 1.6rem 0 0;
}
.scw-discussion-note:last-child { grid-column: span 2; max-width: 82%; }
.scw-discussion-note h3 { margin-bottom: .55rem; font-size: 1rem; }
.scw-discussion-note p { margin: 0; }

.scw-about-atlas > h1, .scw-news-chronicle > h1, .scw-data-sheet > h1,
.scw-language-edition > h1, .scw-mobile-edition > h1 {
    margin: 0 0 2rem;
    font-size: clamp(2rem, 4vw, 3.4rem);
    letter-spacing: -.03em;
}
.scw-about-lead {
    display: grid;
    grid-template-columns: 12rem minmax(0, 1fr);
    gap: 2rem;
    padding: 1.5rem 0 2.3rem;
    border-top: 4px solid var(--scw-accent);
}
.scw-about-stamp {
    padding: 1rem;
    background: var(--scw-highlight);
    align-self: start;
}
.scw-about-stamp span { display: block; color: var(--scw-muted); }
.scw-about-stamp strong { display: block; margin-top: .5rem; font-size: 1.45rem; line-height: 1.55; }
.scw-about-prose { max-width: 80ch; }
.scw-about-prose h2 { font-size: 1.45rem; }
.scw-about-definitions { margin: 2.6rem 0; }
.scw-about-definitions dl {
    margin: 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid var(--scw-rule);
}
.scw-about-definitions dl > div { padding: 1rem; }
.scw-about-definitions dl > div + div { border-left: 1px solid var(--scw-rule); }
.scw-about-definitions dt { color: var(--scw-accent); font-weight: 700; }
.scw-about-definitions dd { margin: .45rem 0 0; }
.scw-about-faq { max-width: 76ch; margin-top: 3rem; }

.scw-news-introduction {
    max-width: 78ch;
    margin-bottom: 2rem;
    padding: 1rem 1.25rem;
    background: var(--scw-highlight);
}
.scw-news-introduction p { margin: 0; }
.scw-timeline {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem 1.5rem;
    border-left: 2px solid var(--scw-accent);
    padding-left: 1.25rem;
}
.scw-timeline-entry {
    position: relative;
    padding: 1rem 1.1rem 1.4rem;
    background: var(--scw-white);
    border-bottom: 1px solid var(--scw-rule);
}
.scw-timeline-entry:nth-child(1), .scw-timeline-entry:nth-child(4) { grid-column: span 2; }
.scw-timeline-entry::before {
    content: "";
    position: absolute;
    left: -1.75rem;
    top: 1.25rem;
    width: .65rem;
    height: .65rem;
    border-radius: 50%;
    background: var(--scw-accent);
}
.scw-timeline-entry h3 { margin: 0 0 .7rem; font-size: 1.2rem; }
.scw-news-image { margin: .6rem 0 1rem; }
.scw-news-image img { inline-size: auto; max-inline-size: 100%; max-block-size: 12rem; object-fit: contain; }
.scw-timeline-entry p { margin-bottom: .7rem; }
.scw-news-faq { max-width: 78ch; margin: 3rem auto 0 0; }

.scw-data-layout {
    display: grid;
    grid-template-columns: 14rem minmax(0, 1fr);
    gap: 2.2rem;
    align-items: start;
}
.scw-field-index {
    padding: 1rem;
    background: var(--scw-ink);
    color: var(--scw-white);
    position: sticky;
    top: 1rem;
}
.scw-field-index h2 { font-size: 1.15rem; }
.scw-field-index ul { padding-left: 1.2rem; }
.scw-field-index li + li { margin-top: .35rem; }
.scw-field-index p { margin: 1.2rem 0 0; color: #e2dedf; font-size: .88rem; }
.scw-data-content { min-width: 0; }
.scw-data-intro { max-width: 82ch; }
.scw-data-intro h2, .scw-field-matrix h2 { font-size: 1.45rem; }
.scw-data-visuals { margin: 1.6rem 0 2.4rem; }
.scw-field-matrix { padding: 1.3rem; background: var(--scw-white); border: 1px solid var(--scw-rule); }
.scw-data-faq { max-width: 78ch; margin: 3rem 0 0 16.2rem; }

.scw-edition-spread {
    display: grid;
    grid-template-columns: 14rem minmax(0, 1fr);
    gap: 2.5rem;
    border-top: 4px solid var(--scw-accent);
    padding-top: 1.4rem;
}
.scw-edition-margin {
    align-self: start;
    border-right: 1px solid var(--scw-rule);
    padding-right: 1rem;
    color: var(--scw-muted);
}
.scw-edition-margin h2 { color: var(--scw-ink); font-size: 1.1rem; }
.scw-edition-margin p { margin: .3rem 0; }
.scw-edition-prose { max-width: 78ch; }
.scw-edition-prose h2 { font-size: 1.45rem; }
.scw-edition-gallery { margin: 2rem 0; }
.scw-edition-glossary { max-width: 70rem; margin-top: 2.5rem; }
.scw-edition-glossary dl { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0; }
.scw-edition-glossary dl > div { padding: 1rem; border-top: 1px solid var(--scw-accent); }
.scw-edition-glossary dt { font-weight: 700; }
.scw-edition-glossary dd { margin: .4rem 0 0; }

.scw-mobile-opening {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(15rem, .7fr);
    gap: 2rem;
    align-items: center;
}
.scw-mobile-text { max-width: 76ch; }
.scw-mobile-text h2 { font-size: 1.45rem; }
.scw-mobile-board {
    padding: 1.1rem;
    background: var(--scw-ink);
    color: var(--scw-white);
    border-radius: 1.2rem 1.2rem .3rem .3rem;
    box-shadow: .6rem .6rem 0 var(--scw-highlight);
}
.scw-mobile-board span, .scw-mobile-board strong {
    display: block;
    padding: .25rem .65rem;
}
.scw-mobile-board span { color: #d2cadd; font-size: .78rem; }
.scw-mobile-board strong { background: #493d62; border-radius: .35rem; }
.scw-mobile-board i { display: block; height: .6rem; }
.scw-mobile-board p { margin: .8rem 0 0; font-size: .8rem; color: #e2dedf; }
.scw-mobile-gallery { margin: 2rem 0; }
.scw-mobile-notes { border-top: 1px solid var(--scw-rule); padding-top: 1.5rem; }
.scw-mobile-notes h2 { font-size: 1.45rem; }
.scw-mobile-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; }
.scw-mobile-pair article { padding: 1rem 1.2rem; background: var(--scw-highlight); }
.scw-mobile-pair h3 { margin-bottom: .4rem; }
.scw-mobile-pair p { margin: 0; }
.scw-mobile-notes > p { max-width: 80ch; margin-top: 1.2rem; }

.scw-site-footer {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
    align-items: end;
    padding: 1.4rem clamp(1rem, 4vw, 3.5rem);
    background: #e5eae5;
    border-top: 1px solid var(--scw-rule);
}
.scw-footer-legal p { margin: .2rem 0; }
.scw-copyright { font-weight: 700; }
.scw-contact-record { color: var(--scw-muted); font-size: .86rem; }
.scw-footer-files { display: flex; gap: 1rem; white-space: nowrap; }

@media (max-width: 900px) {
    .scw-home-canvas > h1 { margin-left: 0; }
    .scw-ledger-layout { grid-template-columns: 1fr; }
    .scw-ledger-layout > .scw-section-index {
        position: static;
        display: none;
    }
    .scw-about-ledger { grid-template-columns: 1fr; }
    .scw-about-ledger .scw-section-index { border-right: 0; border-bottom: 1px solid #aebdb7; padding: 0 0 1rem; }
    .scw-competition-columns { grid-template-columns: 1fr 1fr; }
    .scw-data-layout { grid-template-columns: 11rem minmax(0, 1fr); gap: 1rem; }
    .scw-data-faq { margin-left: 12rem; }
}
@media (max-width: 640px) {
    .scw-brand-plaque { align-items: flex-start; flex-direction: column; gap: .15rem; }
    .scw-nav-rail { gap: .2rem .35rem; }
    .scw-nav-rail a { font-size: .78rem; padding: .22rem .38rem; }
    .scw-home-canvas, .scw-about-atlas, .scw-news-chronicle,
    .scw-data-sheet, .scw-language-edition, .scw-mobile-edition { padding-top: 1.5rem; }
    .scw-home-canvas > h1 { font-size: 1.8rem; }
    .scw-opening-note { font-size: .98rem; }
    .scw-news-masonry, .scw-contrast-columns, .scw-competition-columns,
    .scw-feature-row, .scw-discussion-board, .scw-timeline,
    .scw-about-definitions dl, .scw-edition-glossary dl,
    .scw-mobile-pair { grid-template-columns: 1fr; }
    .scw-news-slip:nth-child(1), .scw-news-slip:nth-child(4),
    .scw-discussion-note:last-child, .scw-timeline-entry:nth-child(1),
    .scw-timeline-entry:nth-child(4) { grid-column: auto; max-width: none; }
    .scw-faq-register { grid-template-columns: 1fr; gap: .5rem; }
    .scw-vertical-title { border-right: 0; border-bottom: 1px solid var(--scw-rule); }
    .scw-image-rail, .scw-about-mosaic, .scw-data-visuals,
    .scw-edition-gallery, .scw-mobile-gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .scw-about-lead, .scw-data-layout, .scw-edition-spread,
    .scw-mobile-opening { grid-template-columns: 1fr; }
    .scw-field-index { position: static; }
    .scw-data-faq { margin-left: 0; }
    .scw-about-definitions dl > div + div { border-left: 0; border-top: 1px solid var(--scw-rule); }
    .scw-edition-margin { border-right: 0; border-bottom: 1px solid var(--scw-rule); padding-bottom: .7rem; }
    .scw-site-footer { align-items: flex-start; flex-direction: column; gap: .8rem; }
    .scw-contact-record { max-width: 65ch; }
}