:root {
  --ink: #151712;
  --ink-soft: #55594f;
  --paper: #e7e4da;
  --paper-deep: #d9d6cc;
  --line: rgba(21, 23, 18, 0.18);
  --line-strong: rgba(21, 23, 18, 0.42);
  --terminal: #0b0e0b;
  --terminal-panel: #111510;
  --terminal-line: rgba(224, 232, 216, 0.14);
  --terminal-copy: #d9dfd2;
  --terminal-muted: #7e877a;
  --accent: #b7ee4d;
  --accent-dark: #37570f;
  --error: #e5a69d;
  --sans: Arial, Helvetica, 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --serif: Georgia, 'Times New Roman', 'Noto Serif SC', SimSun, serif;
  --mono: 'Cascadia Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  --content: 78rem;
  --header-height: 4.5rem;
  --motion-fast: .2s;
  --motion-ui: .34s;
  --motion-page: .28s;
  color-scheme: light;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { min-width: 20rem; margin: 0; background-color: var(--paper); background-image: radial-gradient(circle at 15% -10%, rgba(255,255,255,.55), transparent 34rem), repeating-linear-gradient(90deg, rgba(21,23,18,.018) 0, rgba(21,23,18,.018) 1px, transparent 1px, transparent 6.25rem); }
::selection { color: var(--terminal); background: var(--accent); }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { color: inherit; cursor: pointer; }
img { display: block; max-width: 100%; }
i, em { font-style: normal; }
:focus-visible { outline: 2px solid var(--accent-dark); outline-offset: 4px; }

.skip-link { position: fixed; z-index: 80; top: .75rem; left: .75rem; padding: .65rem .9rem; color: var(--terminal); background: var(--accent); font-family: var(--mono); font-size: .75rem; transform: translateY(-180%); transition: transform .2s ease; }
.skip-link:focus { transform: translateY(0); }
.container { width: min(calc(100% - 3rem), var(--content)); margin-inline: auto; }
.site-shell { min-height: 100dvh; }

.site-header { position: sticky; z-index: 20; top: 0; display: flex; align-items: center; justify-content: space-between; gap: 2rem; width: min(calc(100% - 3rem), var(--content)); min-height: var(--header-height); margin: 0 auto; border-bottom: 1px solid var(--line-strong); background: rgba(231,228,218,.88); backdrop-filter: blur(14px); }
.brand { display: inline-flex; align-items: center; gap: .75rem; flex: 0 0 auto; font-family: var(--mono); font-size: .74rem; font-weight: 700; letter-spacing: .08em; }
.brand-mark { display: grid; place-items: center; width: 2rem; aspect-ratio: 1; color: var(--terminal); background: var(--accent); font-size: .8rem; }
.brand-copy { display: grid; gap: .05rem; }
.brand-copy small { color: var(--ink-soft); font-family: var(--sans); font-size: .58rem; font-weight: 400; letter-spacing: .03em; }
.site-nav { display: flex; align-items: center; gap: clamp(.75rem, 1.8vw, 1.45rem); font-family: var(--mono); font-size: .67rem; font-weight: 700; letter-spacing: .045em; text-transform: uppercase; }
.site-nav a { position: relative; padding: 1.7rem 0 1.55rem; color: var(--ink-soft); transition: color .2s ease; }
.site-nav a::after { position: absolute; right: 0; bottom: -.05rem; left: 0; height: 2px; content: ''; background: var(--ink); transform: scaleX(0); transform-origin: right; transition: transform var(--motion-fast) cubic-bezier(.2,.75,.25,1); }
.site-nav a:hover, .site-nav a[aria-current='page'] { color: var(--ink); }
.site-nav a:hover::after, .site-nav a[aria-current='page']::after { transform: scaleX(1); transform-origin: left; }
.terminal-link { display: inline-flex; align-items: center; gap: .4rem; }
.terminal-link i { display: grid; place-items: center; width: 1.6rem; height: 1.4rem; color: var(--paper); background: var(--ink); font-size: .7rem; }
.lang-toggle { position: relative; min-width: 2.2rem; overflow: hidden; padding: .35rem .4rem; border: 1px solid var(--line-strong); background: transparent; font-family: var(--mono); font-size: .65rem; font-weight: 700; transition: color .2s ease, background .2s ease, border-color .2s ease; }
.lang-toggle:hover { color: var(--terminal); background: var(--accent); }
.lang-toggle[aria-busy='true'] { color: var(--paper); border-color: var(--ink); background: var(--ink); cursor: progress; }
.lang-toggle-label { display: block; }
.lang-toggle::after { position: absolute; right: .25rem; bottom: .13rem; left: .25rem; height: 2px; content: ''; background: var(--accent); opacity: 0; transform: translateX(-150%) scaleX(.32); }
.lang-toggle.is-language-switching::after { animation: language-proof-cursor .36s linear both; }
[data-language-text][data-language-flow='inline'] { display: inline-block; }
[data-language-text][data-language-flow='block'] { display: block; }
html.is-language-copy-exiting [data-language-text] { animation: language-copy-out .14s cubic-bezier(.7,0,1,.5) both; }
html.is-language-copy-entering [data-language-text] { animation: language-copy-in .22s cubic-bezier(.16,1,.3,1) both; }
html.is-language-copy-exiting [data-lang-placeholder-en][data-lang-placeholder-zh]::placeholder { animation: language-placeholder-out .14s cubic-bezier(.7,0,1,.5) both; }
html.is-language-copy-entering [data-lang-placeholder-en][data-lang-placeholder-zh]::placeholder { animation: language-placeholder-in .22s cubic-bezier(.16,1,.3,1) both; }

.eyebrow { margin: 0; font-family: var(--mono); font-size: .66rem; font-weight: 700; letter-spacing: .1em; line-height: 1.5; text-transform: uppercase; }
.muted { color: var(--ink-soft); font-family: var(--mono); font-size: .68rem; }
.arrow-link { display: inline-flex; align-items: center; gap: .45rem; width: fit-content; font-family: var(--mono); font-size: .7rem; font-weight: 700; text-transform: uppercase; }
.arrow-link::after { content: '↗'; font-size: .9rem; transition: transform .2s ease; }
.arrow-link:hover::after { transform: translate(.2rem, -.2rem); }

.vault-masthead { padding: clamp(4rem, 8vw, 7rem) 0 2rem; border-bottom: 1px solid var(--line-strong); }
.masthead-meta, .masthead-foot { display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.masthead-meta span { color: var(--ink-soft); font-family: var(--mono); font-size: .62rem; letter-spacing: .06em; }
.vault-masthead h1 { display: flex; justify-content: space-between; gap: 1rem; margin: clamp(2.2rem, 5vw, 4.5rem) 0 clamp(1.7rem, 4vw, 3rem); font-size: clamp(4.25rem, 15.6vw, 12.4rem); font-weight: 800; line-height: .73; letter-spacing: -.09em; text-transform: uppercase; }
.vault-masthead h1 span:last-child { color: transparent; -webkit-text-stroke: 1.5px var(--ink); }
.vault-masthead > h1 { display: block; margin-bottom: clamp(1.7rem, 4vw, 3rem); }
.vault-subtitle { margin: 0; font-family: var(--serif); font-size: clamp(1.25rem, 2vw, 1.8rem); }
.masthead-foot { align-items: flex-end; }
.masthead-foot p { margin: 0; }
.masthead-foot p:first-child { font-family: var(--serif); font-size: clamp(1.25rem, 2vw, 1.8rem); font-style: italic; }
.masthead-foot p:last-child { max-width: 21rem; color: var(--ink-soft); font-size: .78rem; line-height: 1.6; text-align: right; }

.home-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(16rem, .62fr); gap: clamp(1.5rem, 4vw, 4rem); padding: clamp(3rem, 6vw, 5.5rem) 0 clamp(5rem, 10vw, 9rem); }
.feature-post { position: relative; display: grid; grid-template-rows: auto 1fr auto; min-height: 34rem; overflow: hidden; padding: clamp(1.4rem, 3vw, 2.4rem); color: var(--terminal-copy); background: var(--terminal); isolation: isolate; }
.feature-post::before { position: absolute; z-index: -1; top: -11rem; right: -8rem; width: 30rem; aspect-ratio: 1; content: ''; border: 1px solid rgba(183,238,77,.24); border-radius: 50%; box-shadow: 0 0 0 4rem rgba(183,238,77,.025), 0 0 0 9rem rgba(183,238,77,.018); }
.feature-post::after { position: absolute; z-index: -1; inset: 0; content: ''; opacity: .24; background-image: linear-gradient(var(--terminal-line) 1px, transparent 1px), linear-gradient(90deg, var(--terminal-line) 1px, transparent 1px); background-size: 4rem 4rem; mask-image: linear-gradient(135deg, transparent 25%, black); }
.feature-index { display: flex; align-items: start; justify-content: space-between; }
.feature-index .eyebrow { color: var(--accent); }
.feature-index > span { color: #596154; font-family: var(--mono); font-size: 3rem; line-height: .8; }
.feature-post h2 { max-width: 12ch; margin: clamp(3rem, 7vw, 6rem) 0 1.25rem; font-family: var(--serif); font-size: clamp(2.8rem, 6vw, 5.8rem); font-weight: 400; line-height: .92; letter-spacing: -.065em; text-wrap: balance; transition: transform .28s cubic-bezier(.16,1,.3,1); }
.feature-post:is(:hover, :focus-visible) h2 { transform: translateX(.55rem); }
.feature-post > .post-arrow { align-self: end; justify-self: end; color: var(--accent); font-size: 1.4rem; }
.feature-post h2 + p { max-width: 37rem; margin: 0; color: #aeb6a7; font-size: .9rem; line-height: 1.75; }
.home-ledger { display: grid; align-content: start; border-top: 1px solid var(--line-strong); }
.home-ledger-title { display: flex; align-items: center; min-height: 3.2rem; margin: 0; padding: .75rem 0; border-bottom: 1px solid var(--line); font-family: var(--mono); font-size: .68rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.home-ledger dl { display: grid; margin: 0; }
.home-ledger dl > div { display: grid; grid-template-columns: minmax(6.8rem, .8fr) minmax(0, 1fr); gap: 1rem; padding: 1.1rem 0; border-bottom: 1px solid var(--line); }
.home-ledger dt { color: var(--ink-soft); font-family: var(--mono); font-size: .62rem; text-transform: uppercase; }
.home-ledger dd { min-width: 0; margin: 0; font-family: var(--mono); font-size: .68rem; overflow-wrap: anywhere; }
.home-empty { padding: clamp(4rem, 9vw, 8rem) 0; border-bottom: 1px solid var(--line-strong); }
.home-empty h2 { max-width: 16ch; margin: 1.5rem 0 0; font-family: var(--serif); font-size: clamp(2.4rem, 6vw, 5rem); font-weight: 400; line-height: .95; letter-spacing: -.055em; }
.home-recent { padding: 0 0 clamp(5rem, 9vw, 8rem); }

.section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.section-heading h2 { margin: 0; font-family: var(--mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; }
.section-heading a { color: var(--ink-soft); font-family: var(--mono); font-size: .68rem; text-transform: uppercase; }
.section-tools { display: flex; align-items: center; gap: 1.2rem; }
.section-tools a:hover { color: var(--ink); }
.post-list { display: grid; border-top: 1px solid var(--line-strong); }
.post-row { position: relative; display: grid; grid-template-columns: 8rem minmax(0, 1fr) 2rem; gap: 1.5rem; align-items: start; padding: 1.6rem 0; border-bottom: 1px solid var(--line); }
.post-row::before { position: absolute; inset: 0; z-index: -1; content: ''; background: var(--accent); transform: scaleY(0); transform-origin: bottom; transition: transform .25s ease; }
.post-row > :not(.post-arrow) { transition: transform .25s cubic-bezier(.16,1,.3,1); }
.post-row:is(:hover, :focus-visible) > :not(.post-arrow) { transform: translateX(.75rem); }
.post-row:is(:hover, :focus-visible)::before { transform: scaleY(1); }
.post-date { color: var(--ink-soft); font-family: var(--mono); font-size: .65rem; font-variant-numeric: tabular-nums; }
.post-row h3 { margin: -.2rem 0 .45rem; font-family: var(--serif); font-size: clamp(1.4rem, 2.6vw, 2.1rem); font-weight: 400; line-height: 1.1; letter-spacing: -.04em; }
.post-row p { max-width: 47rem; margin: 0; color: var(--ink-soft); font-size: .84rem; line-height: 1.65; }
.post-arrow { justify-self: end; font-family: var(--mono); font-size: 1.1rem; transition: transform .2s ease; }
.post-row:is(:hover, :focus-visible) .post-arrow { transform: translate(.2rem, -.2rem); }

.home-collections { padding: 0 0 clamp(6rem, 12vw, 11rem); }
.home-collections-heading { max-width: 35rem; margin-bottom: clamp(2rem, 5vw, 4rem); }
.home-collections-heading h2 { margin: 0; font-family: var(--serif); font-size: clamp(2.8rem, 6vw, 5rem); font-weight: 400; line-height: .95; letter-spacing: -.06em; }
.module-strip { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr); gap: 1px; border: 1px solid var(--line-strong); background: var(--line-strong); transition: grid-template-columns .52s cubic-bezier(.16,1,.3,1); }
.module-card { position: relative; z-index: 0; display: grid; align-content: space-between; gap: 5rem; min-width: 0; min-height: 19rem; overflow: hidden; padding: 1.5rem; background: var(--paper); isolation: isolate; transition: color .28s ease; }
.module-card::before { position: absolute; z-index: -1; inset: 0; content: ''; background: var(--accent); transform: scaleY(0); transform-origin: bottom; transition: transform .44s cubic-bezier(.16,1,.3,1); }
.module-card:is(:hover, :focus-visible)::before { transform: scaleY(1); }
.module-card h3 { max-width: 11ch; margin: 1rem 0 0; font-family: var(--serif); font-size: clamp(1.8rem, 3.5vw, 3.2rem); font-weight: 400; line-height: 1; letter-spacing: -.055em; text-wrap: balance; transition: transform .36s cubic-bezier(.16,1,.3,1); }
.module-card:is(:hover, :focus-visible) h3 { transform: translateX(.55rem); }
.module-card-foot { display: flex; align-items: end; justify-content: space-between; color: var(--ink-soft); font-family: var(--mono); font-size: .65rem; }
.module-card-foot span:last-child { color: var(--ink); font-size: 1.2rem; transition: transform .28s ease; }
.module-card:is(:hover, :focus-visible) .module-card-foot span:last-child { transform: translate(.25rem, -.25rem); }
@media (hover: hover) and (pointer: fine) and (min-width: 851px) {
  .module-strip:has(.module-card:nth-child(1):hover), .module-strip:has(.module-card:nth-child(1):focus-visible) { grid-template-columns: minmax(0, 1.42fr) minmax(0, .79fr) minmax(0, .79fr); }
  .module-strip:has(.module-card:nth-child(2):hover), .module-strip:has(.module-card:nth-child(2):focus-visible) { grid-template-columns: minmax(0, .79fr) minmax(0, 1.42fr) minmax(0, .79fr); }
  .module-strip:has(.module-card:nth-child(3):hover), .module-strip:has(.module-card:nth-child(3):focus-visible) { grid-template-columns: minmax(0, .79fr) minmax(0, .79fr) minmax(0, 1.42fr); }
}

.page-intro { display: grid; gap: 1.2rem; padding: clamp(5rem, 10vw, 9rem) 0 clamp(3.5rem, 7vw, 6rem); border-bottom: 1px solid var(--line-strong); }
.page-intro h1 { max-width: 11ch; margin: .7rem 0 0; font-family: var(--serif); font-size: clamp(3.5rem, 9vw, 8rem); font-weight: 400; line-height: .88; letter-spacing: -.075em; text-wrap: balance; }
.page-intro > p:last-child { max-width: 40rem; margin: .5rem 0 0; color: var(--ink-soft); font-size: .98rem; line-height: 1.75; }

.collection-page { padding: clamp(5rem, 9vw, 8rem) 0 clamp(6rem, 11vw, 10rem); }
.collection-header { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(15rem, .6fr); gap: 4rem; align-items: end; padding-bottom: 2.5rem; border-bottom: 1px solid var(--line-strong); }
.collection-header h1 { max-width: 10ch; margin: 1.2rem 0 0; font-family: var(--serif); font-size: clamp(3.6rem, 9vw, 8rem); font-weight: 400; line-height: .86; letter-spacing: -.08em; text-wrap: balance; }
.collection-header > p { max-width: 22rem; margin: 0; color: var(--ink-soft); font-size: .9rem; line-height: 1.75; }
.empty-collection { display: grid; grid-template-columns: 5rem minmax(0, 39rem); gap: clamp(1.5rem, 4vw, 4rem); padding: clamp(4rem, 8vw, 7rem) 0 0; }
.empty-collection > p { grid-column: 2; margin: 0; color: var(--ink-soft); font-family: var(--mono); font-size: .72rem; }
.empty-collection .signal { font-family: var(--mono); font-size: 2.2rem; font-weight: 700; line-height: 1; }
.empty-collection .signal::after { display: block; width: 100%; height: .25rem; margin-top: .7rem; content: ''; background: var(--accent); }
.empty-collection h2 { max-width: 18ch; margin: 1.2rem 0 1rem; font-family: var(--serif); font-size: clamp(2rem, 4.5vw, 3.7rem); font-weight: 400; line-height: 1; letter-spacing: -.055em; }
.empty-collection p:not(.eyebrow) { max-width: 37rem; margin: 0 0 2rem; color: var(--ink-soft); font-size: .92rem; line-height: 1.8; }

.collection-index { display: grid; border-top: 1px solid var(--line-strong); }
.collection-entry-row { position: relative; z-index: 0; display: grid; grid-template-columns: 3rem minmax(0, 1fr) 2rem; gap: clamp(1rem, 3vw, 2.5rem); align-items: start; overflow: hidden; padding: clamp(1.7rem, 3vw, 2.6rem) 0; border-bottom: 1px solid var(--line); }
.collection-entry-row::before { position: absolute; z-index: -1; inset: 0; content: ''; background: var(--accent); transform: scaleY(0); transform-origin: bottom; transition: transform .25s ease; }
.collection-entry-row:is(:hover, :focus-visible)::before { transform: scaleY(1); }
.collection-entry-row:focus-visible { outline: 2px solid var(--accent-dark); outline-offset: 4px; }
.collection-entry-number { color: var(--ink-soft); font-family: var(--mono); font-size: .68rem; font-variant-numeric: tabular-nums; }
.collection-entry-copy { display: grid; gap: .55rem; transition: transform .25s cubic-bezier(.16, 1, .3, 1); }
.collection-entry-row:is(:hover, :focus-visible) .collection-entry-copy { transform: translateX(.65rem); }
.sample-label { width: fit-content; color: var(--accent-dark); font-family: var(--mono); font-size: .68rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.collection-entry-copy h2 { max-width: 18ch; margin: 0; font-family: var(--serif); font-size: clamp(1.8rem, 4vw, 3.2rem); font-weight: 400; line-height: 1; letter-spacing: -.04em; text-wrap: balance; }
.collection-entry-copy p { max-width: 43rem; margin: .2rem 0 0; color: var(--ink-soft); font-size: .88rem; line-height: 1.7; }
.collection-entry-arrow { justify-self: end; font-family: var(--mono); font-size: 1.1rem; transition: transform .2s ease; }
.collection-entry-row:is(:hover, :focus-visible) .collection-entry-arrow { transform: translate(.2rem, -.2rem); }


.article-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 16rem; gap: clamp(3rem, 8vw, 7rem); padding: clamp(5rem, 9vw, 8rem) 0 clamp(7rem, 12vw, 11rem); }
.article-header { padding-bottom: 2.8rem; border-bottom: 1px solid var(--line-strong); }
.article-header h1 { max-width: 12ch; margin: 1.25rem 0 1.5rem; font-family: var(--serif); font-size: clamp(3.5rem, 8vw, 7rem); font-weight: 400; line-height: .9; letter-spacing: -.075em; text-wrap: balance; }
.article-description { max-width: 42rem; margin: 0; color: var(--ink-soft); font-size: 1.05rem; line-height: 1.75; }
.article-meta { display: flex; flex-wrap: wrap; gap: .7rem 1rem; margin-top: 2rem; color: var(--ink-soft); font-family: var(--mono); font-size: .63rem; }
.article-meta span + span::before { margin-right: 1rem; color: var(--accent-dark); content: '/'; }
.content-cover { margin: 0 0 clamp(2.4rem, 5vw, 4.5rem); border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); overflow: hidden; background: var(--paper-deep); }
.content-cover img { display: block; width: 100%; max-height: 42rem; object-fit: cover; }
.article-body { padding-top: 3.5rem; }
.article-body > * { max-width: 43rem; }
.article-body h2 { margin: 4rem 0 1.2rem; font-family: var(--serif); font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 400; line-height: 1.1; letter-spacing: -.04em; scroll-margin-top: calc(var(--header-height) + 2rem); }
.article-body h3 { margin: 3rem 0 1rem; font-size: 1.2rem; scroll-margin-top: calc(var(--header-height) + 2rem); }
.article-body p, .article-body li { color: #34372f; font-family: var(--serif); font-size: clamp(1.03rem, 1.7vw, 1.14rem); line-height: 1.95; }
.article-body p:first-child { font-size: clamp(1.2rem, 2vw, 1.35rem); line-height: 1.8; }
.article-body ul, .article-body ol { padding-left: 1.3rem; }
.article-body a { text-decoration: underline; text-decoration-color: var(--accent-dark); text-decoration-thickness: 1px; text-underline-offset: .22em; }
.article-aside { min-width: 0; }
.article-aside-sticky { position: sticky; top: calc(var(--header-height) + 2rem); }
.article-aside h2 { margin: 0 0 1rem; font-family: var(--mono); font-size: .65rem; letter-spacing: .1em; text-transform: uppercase; }
.article-aside p { margin: 0 0 1.5rem; color: var(--ink-soft); font-size: .78rem; line-height: 1.7; }
.toc-list { display: grid; gap: .55rem; margin-bottom: 2rem; padding: 1rem 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.toc-list a { color: var(--ink-soft); font-family: var(--serif); font-size: .85rem; line-height: 1.35; transition: color .2s ease, transform .2s ease; }
.toc-list a:hover { color: var(--ink); transform: translateX(.2rem); }
.toc-list a.nested { padding-left: 1rem; font-size: .78rem; }
.article-actions { display: grid; gap: .8rem; }
.article-action-button { width: fit-content; min-height: 2.75rem; padding: .6rem 0; border: 0; border-bottom: 1px solid var(--line-strong); background: transparent; font-family: var(--mono); font-size: .66rem; font-weight: 700; line-height: 1.5; text-transform: uppercase; }
.article-action-button:hover { border-bottom-color: var(--ink); }
.article-action-status { padding-top: .2rem; color: var(--accent-dark); }
.article-nav { display: grid; gap: .5rem; margin-top: 3.5rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.article-nav a { display: grid; gap: .3rem; padding: .55rem 0; }
.article-nav small { color: var(--ink-soft); font-family: var(--mono); font-size: .58rem; }
.article-nav span { font-family: var(--serif); font-size: .95rem; line-height: 1.3; }

.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; padding: 0; border: 0; margin: -1px; clip: rect(0 0 0 0); white-space: nowrap; }
.search-page { padding: clamp(5rem, 9vw, 8rem) 0 clamp(7rem, 12vw, 11rem); }
.search-header { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(15rem, .65fr); gap: clamp(2rem, 7vw, 6rem); align-items: end; padding-bottom: clamp(2.5rem, 5vw, 4rem); border-bottom: 1px solid var(--line-strong); }
.search-header h1 { max-width: 10ch; margin: 0; font-family: var(--serif); font-size: clamp(3.6rem, 9vw, 8rem); font-weight: 400; line-height: .86; letter-spacing: -.08em; text-wrap: balance; }
.search-header > p { max-width: 24rem; margin: 0; color: var(--ink-soft); font-size: .9rem; line-height: 1.75; }
.search-form { padding: clamp(3rem, 7vw, 5.5rem) 0 0; }
.search-form > label { display: block; margin-bottom: 1rem; font-family: var(--mono); font-size: .68rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.search-input-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 1rem; align-items: end; border-bottom: 2px solid var(--ink); }
.search-input-row input { min-width: 0; padding: .7rem 0 1rem; color: var(--ink); border: 0; outline: 2px solid transparent; outline-offset: 4px; background: transparent; font-family: var(--serif); font-size: clamp(1.8rem, 4.5vw, 3.8rem); line-height: 1; letter-spacing: -.045em; }
.search-input-row input::placeholder { color: var(--ink-soft); opacity: 1; }
.search-input-row input:focus-visible { outline-color: var(--accent-dark); }
.search-input-row:focus-within { border-bottom-color: var(--accent-dark); }
.search-input-row button { margin-bottom: .8rem; padding: .75rem 1rem; color: var(--paper); border: 1px solid var(--ink); background: var(--ink); font-family: var(--mono); font-size: .68rem; font-weight: 700; text-transform: uppercase; transition: color .2s ease, background .2s ease; }
.search-input-row button:hover { color: var(--terminal); background: var(--accent); }
.search-summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 4.2rem; border-bottom: 1px solid var(--line); }
.search-summary p { margin: 0; color: var(--ink-soft); font-family: var(--mono); font-size: .68rem; line-height: 1.5; }
.search-clear { min-height: 2.75rem; padding: .6rem 0; color: var(--ink-soft); border: 0; border-bottom: 1px solid var(--line-strong); background: transparent; font-family: var(--mono); font-size: .65rem; text-transform: uppercase; }
.search-clear:hover { color: var(--ink); }
.search-results { padding-top: clamp(2rem, 5vw, 4rem); }
.search-empty, .search-noscript { margin: 0; padding: 2rem 0; color: var(--ink-soft); border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); font-family: var(--serif); font-size: 1.05rem; line-height: 1.7; }
.search-result-meta { display: block; margin-top: .8rem; color: var(--ink-soft); font-family: var(--mono); font-size: .6rem; line-height: 1.5; text-transform: uppercase; }

.legal-intro h1 { max-width: 13ch; }
.legal-page { padding: clamp(3rem, 6vw, 5.5rem) 0 clamp(7rem, 12vw, 11rem); }
.legal-article { max-width: 54rem; }
.legal-article p { margin: 0; color: var(--ink-soft); font-size: clamp(.98rem, 1.35vw, 1.1rem); line-height: 1.9; text-align: justify; text-wrap: pretty; }
.legal-article .legal-lead { max-width: 46rem; color: var(--ink); font-family: var(--serif); font-size: clamp(1.3rem, 2.2vw, 1.75rem); line-height: 1.55; text-align: left; }
.legal-clause { display: grid; grid-template-columns: minmax(11rem, .45fr) minmax(0, 1fr); gap: clamp(2rem, 6vw, 5rem); margin-top: clamp(2.5rem, 5vw, 4rem); padding-top: clamp(1.4rem, 3vw, 2.2rem); border-top: 1px solid var(--line); }
.legal-clause h2 { margin: 0; font-family: var(--mono); font-size: .72rem; line-height: 1.6; letter-spacing: .06em; text-transform: uppercase; }

.system-page { padding: clamp(4rem, 8vw, 7rem) 0 clamp(7rem, 12vw, 11rem); }
.system-hero { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(16rem, .65fr); gap: clamp(2rem, 8vw, 7rem); align-items: end; padding-bottom: clamp(3rem, 6vw, 5rem); border-bottom: 1px solid var(--line-strong); }
.system-hero h1 { margin: 1.4rem 0 -.08em; font-family: var(--serif); font-size: clamp(7rem, 20vw, 16rem); font-weight: 400; line-height: .62; letter-spacing: -.09em; }
.system-hero > p { max-width: 25rem; margin: 0; color: var(--ink-soft); font-size: .95rem; line-height: 1.8; }
.status-hero h1 { max-width: 8ch; margin-bottom: 0; font-size: clamp(4rem, 10vw, 8rem); line-height: .82; text-wrap: balance; }
.system-label { margin: 0; color: var(--ink-soft); font-family: var(--mono); font-size: .65rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.system-address { display: grid; grid-template-columns: minmax(10rem, .35fr) minmax(0, 1fr); gap: clamp(1.5rem, 5vw, 4rem); padding: clamp(2rem, 5vw, 3.5rem) 0; border-bottom: 1px solid var(--line); }
.system-address code { min-width: 0; font-family: var(--mono); font-size: clamp(.85rem, 2vw, 1.35rem); line-height: 1.5; overflow-wrap: anywhere; }
.system-address noscript { grid-column: 2; }
.system-address noscript p { max-width: 38rem; margin: .7rem 0 0; color: var(--ink-soft); font-size: .82rem; line-height: 1.7; }
.system-recovery { display: grid; grid-template-columns: minmax(14rem, .55fr) minmax(0, 1fr); gap: clamp(2rem, 7vw, 6rem); padding-top: clamp(4rem, 8vw, 7rem); }
.system-recovery h2 { max-width: 12ch; margin: 1rem 0 0; font-family: var(--serif); font-size: clamp(2.2rem, 5vw, 4.5rem); font-weight: 400; line-height: .95; letter-spacing: -.055em; text-wrap: balance; }
.recovery-links { display: grid; border-top: 1px solid var(--line-strong); }
.recovery-links a { position: relative; display: grid; grid-template-columns: 2rem minmax(0, 1fr) 1.5rem; gap: 1rem; align-items: center; min-height: 4.5rem; padding: .75rem 0; border-bottom: 1px solid var(--line); overflow: hidden; }
.recovery-links a::before { position: absolute; z-index: -1; inset: 0; content: ''; background: var(--accent); transform: scaleX(0); transform-origin: right; transition: transform var(--motion-ui) cubic-bezier(.16,1,.3,1); }
.recovery-links a:is(:hover, :focus-visible)::before { transform: scaleX(1); transform-origin: left; }
.recovery-links a > span { display: grid; place-items: center; width: 2rem; aspect-ratio: 1; color: var(--paper); background: var(--ink); font-family: var(--mono); font-size: .65rem; }
.recovery-links strong { font-family: var(--serif); font-size: 1.15rem; font-weight: 400; }
.recovery-links i { justify-self: end; font-family: var(--mono); transition: transform .25s ease; }
.recovery-links a:is(:hover, :focus-visible) i { transform: translate(.2rem, -.2rem); }
.status-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-bottom: 1px solid var(--line-strong); }
.status-facts > div { display: grid; align-content: start; gap: 1rem; min-height: 13rem; padding: 1.5rem; border-right: 1px solid var(--line); }
.status-facts > div:first-child { padding-left: 0; }
.status-facts > div:last-child { border-right: 0; }
.status-mark { color: var(--accent-dark); font-family: var(--mono); font-size: .7rem; }
.status-facts strong { max-width: 22rem; font-family: var(--serif); font-size: clamp(1.2rem, 2vw, 1.6rem); font-weight: 400; line-height: 1.35; overflow-wrap: anywhere; }
.status-facts a { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .25em; }
.status-release { font-family: var(--mono) !important; font-size: .82rem !important; }

.site-footer { display: flex; justify-content: space-between; gap: 1rem; width: min(calc(100% - 3rem), var(--content)); margin: 0 auto; padding: 1.2rem 0 2rem; border-top: 1px solid var(--line-strong); color: var(--ink-soft); font-family: var(--mono); font-size: .6rem; letter-spacing: .04em; }
.site-footer i { font-style: normal; }
.site-footer a:hover { color: var(--ink); }
.site-footer em { padding: 0 .45rem; }

/* GUI language change: a compact proof cursor anchored to the language control. */
@keyframes language-copy-out { from { opacity: 1; transform: translateY(0); } to { opacity: 0; transform: translateY(-.55em); } }
@keyframes language-copy-in { from { opacity: 0; transform: translateY(.55em); } to { opacity: 1; transform: translateY(0); } }
@keyframes language-placeholder-out { from { opacity: 1; } to { opacity: 0; } }
@keyframes language-placeholder-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes language-proof-cursor {
  0% { opacity: 0; transform: translateX(-150%) scaleX(.32); }
  18%, 82% { opacity: 1; }
  100% { opacity: 0; transform: translateX(150%) scaleX(.32); }
}

.page-transition { position: fixed; z-index: 70; inset: 0; overflow: hidden; background: var(--terminal); opacity: 0; pointer-events: none; }
.transition-scanline, .transition-crt-line { position: absolute; right: 0; left: 0; display: block; height: 1px; background: var(--accent); opacity: 0; box-shadow: 0 0 .8rem rgba(183,238,77,.45); }
.transition-scanline { top: 0; }
.transition-crt-line { top: 50%; transform: scaleX(.12); }

.page-transition.is-module-covering { animation: module-wipe-in .28s cubic-bezier(.7,0,1,.5) both; will-change: clip-path; }
.page-transition.is-module-covering .transition-scanline { animation: scanline-down .28s cubic-bezier(.7,0,1,.5) both; }
html.has-page-transition.transition-module .page-transition { animation: module-wipe-out .32s cubic-bezier(.16,1,.3,1) both; will-change: clip-path; }
html.has-page-transition.transition-module .transition-scanline { animation: scanline-up .32s cubic-bezier(.16,1,.3,1) both; }

body.is-crt-exiting .site-shell, body.is-crt-exiting .terminal-frame { transform-origin: center; animation: crt-content-out .33s cubic-bezier(.7,0,1,.5) both; }
.page-transition.is-crt-covering { animation: crt-blackout-in .33s linear both; }
.page-transition.is-crt-covering .transition-crt-line { animation: crt-line-out .33s ease-out both; }
html.has-page-transition.transition-crt .site-shell, html.has-page-transition.transition-crt .terminal-frame { transform-origin: center; animation: crt-content-in .42s cubic-bezier(.16,1,.3,1) both; }
html.has-page-transition.transition-crt .page-transition { animation: crt-blackout-out .42s linear both; }
html.has-page-transition.transition-crt .transition-crt-line { animation: crt-line-in .42s ease-out both; }

@keyframes module-wipe-in { from { opacity: 1; clip-path: inset(0 0 100% 0); } to { opacity: 1; clip-path: inset(0); } }
@keyframes module-wipe-out { from { opacity: 1; clip-path: inset(0); } to { opacity: 1; clip-path: inset(0 0 100% 0); } }
@keyframes scanline-down { 0% { opacity: 0; transform: translateY(-2px); } 10% { opacity: 1; } 92% { opacity: 1; } 100% { opacity: 0; transform: translateY(100vh); } }
@keyframes scanline-up { 0% { opacity: 0; transform: translateY(100vh); } 10% { opacity: 1; } 92% { opacity: 1; } 100% { opacity: 0; transform: translateY(-2px); } }
@keyframes crt-content-out { 0% { opacity: 1; filter: brightness(1); transform: scale(1); } 62% { opacity: 1; filter: brightness(2.4); transform: scaleX(.98) scaleY(.018); } 100% { opacity: 0; filter: brightness(4); transform: scaleX(.18) scaleY(.002); } }
@keyframes crt-blackout-in { 0%, 45% { opacity: 0; } 78%, 100% { opacity: 1; } }
@keyframes crt-line-out { 0%, 42% { opacity: 0; transform: scaleX(.1); } 65% { opacity: 1; transform: scaleX(.98); } 100% { opacity: 0; transform: scaleX(.18); } }
@keyframes crt-content-in { 0% { opacity: 0; filter: brightness(4); transform: scaleX(.18) scaleY(.002); } 35% { opacity: 1; filter: brightness(2.2); transform: scaleX(1) scaleY(.018); } 100% { opacity: 1; filter: brightness(1); transform: scale(1); } }
@keyframes crt-blackout-out { 0%, 22% { opacity: 1; } 100% { opacity: 0; } }
@keyframes crt-line-in { 0% { opacity: 0; transform: scaleX(.18); } 20% { opacity: 1; transform: scaleX(1); } 52%, 100% { opacity: 0; transform: scaleX(1); } }

@media (max-width: 850px) {
  .site-header { display: grid; grid-template-columns: 1fr auto; gap: 0 1rem; padding-top: .8rem; }
  .site-nav { grid-column: 1 / -1; justify-content: space-between; width: 100%; overflow-x: auto; scrollbar-width: none; }
  .site-nav::-webkit-scrollbar { display: none; }
  .site-nav a { padding: 1rem 0 .85rem; }
  .vault-masthead h1 { display: grid; gap: .2rem; font-size: clamp(5rem, 26vw, 9rem); line-height: .7; }
  .vault-masthead h1 span:last-child { justify-self: end; }
  .home-grid, .article-wrap, .search-header { grid-template-columns: 1fr; }
  .system-hero, .system-recovery { grid-template-columns: 1fr; }
  .status-facts { grid-template-columns: 1fr 1fr; }
  .status-facts > div:nth-child(2n) { border-right: 0; }
  .collection-entry-row { grid-template-columns: 2rem minmax(0, 1fr) 2rem; }
  .article-aside { order: -1; }
  .article-aside-sticky { position: static; }
  .toc-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .module-strip { grid-template-columns: 1.2fr 1fr; }
  .module-card:last-child { grid-column: 1 / -1; min-height: 13rem; }
}

@media (max-width: 620px) {
  :root { --header-height: 6.7rem; }
  .container, .site-header, .site-footer { width: min(calc(100% - 1.5rem), var(--content)); }
  .brand-copy small { display: none; }
  .site-nav { gap: 1rem; }
  .site-nav a, .lang-toggle { display: inline-flex; align-items: center; min-height: 2.75rem; font-size: .6rem; }
  .lang-toggle { justify-content: center; }
  .terminal-link span { display: none; }
  .terminal-link i { width: 1.45rem; }
  .masthead-meta span { display: none; }
  .masthead-foot { display: grid; gap: .8rem; }
  .masthead-foot p:last-child { text-align: left; }
  .home-grid { padding-bottom: 4rem; }
  .feature-post { min-height: 29rem; }
  .post-row { grid-template-columns: 1fr 1.2rem; gap: .8rem; }
  .post-date { grid-column: 1 / -1; }
  .module-strip { grid-template-columns: 1fr; }
  .module-card, .module-card:last-child { grid-column: auto; min-height: 13rem; gap: 3rem; }
  .legal-clause { grid-template-columns: 1fr; gap: 1rem; }
  .system-address { grid-template-columns: 1fr; gap: 1rem; }
  .system-address noscript { grid-column: auto; }
  .status-facts { grid-template-columns: 1fr; }
  .status-facts > div, .status-facts > div:first-child { min-height: 0; padding: 1.5rem 0; border-right: 0; }
  .collection-header { grid-template-columns: 1fr; gap: 2rem; }
  .empty-collection { grid-template-columns: 3.5rem minmax(0, 1fr); gap: 1.3rem; }
  .empty-collection .signal { font-size: 1.4rem; }
  .article-wrap { padding-top: 4rem; }
  .article-meta span + span::before { display: none; }
  .section-tools { align-items: flex-end; flex-direction: column; gap: .45rem; }
  .collection-entry-row { grid-template-columns: 1fr 1.5rem; }
  .collection-entry-number { display: none; }
  .collection-entry-copy h2 { font-size: 2rem; }
  .search-input-row { grid-template-columns: 1fr; gap: 0; }
  .search-input-row button { width: fit-content; }
  .search-input-row button, .search-clear, .article-action-button { min-height: 2.75rem; }
  .toc-list { grid-template-columns: 1fr; }
  .site-footer { display: grid; gap: .7rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .page-transition { display: none; }
  .lang-toggle.is-language-switching::after,
  html.is-language-copy-exiting [data-language-text],
  html.is-language-copy-entering [data-language-text],
  html.is-language-copy-exiting [data-lang-placeholder-en][data-lang-placeholder-zh]::placeholder,
  html.is-language-copy-entering [data-lang-placeholder-en][data-lang-placeholder-zh]::placeholder { animation: none; }
  body.is-crt-exiting .site-shell, body.is-crt-exiting .terminal-frame,
  html.has-page-transition.transition-crt .site-shell, html.has-page-transition.transition-crt .terminal-frame { animation: none; }
}