/* Cambridge AI4S: an editorial system for a society bulletin. Serif headlines, sans text, mono only for data.
   Hairline rules instead of cards; the brand teal (#153C3B, #007F78) is an accent, not a fill. Every colour is a token. */

@font-face { font-family: "Newsreader"; src: url("/fonts/newsreader-latin.woff2") format("woff2"); font-weight: 200 800; font-style: normal; font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Newsreader"; src: url("/fonts/newsreader-latin-ext.woff2") format("woff2"); font-weight: 200 800; font-style: normal; font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1E00-1E9F, U+20A0-20AB, U+20AD-20C0, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Newsreader"; src: url("/fonts/newsreader-latin-italic.woff2") format("woff2"); font-weight: 200 800; font-style: italic; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("/fonts/plex-sans-latin.woff2") format("woff2"); font-weight: 100 700; font-style: normal; font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "IBM Plex Sans"; src: url("/fonts/plex-sans-latin-ext.woff2") format("woff2"); font-weight: 100 700; font-style: normal; font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "IBM Plex Sans"; src: url("/fonts/plex-sans-latin-italic.woff2") format("woff2"); font-weight: 100 700; font-style: italic; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("/fonts/plex-mono-latin-400.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("/fonts/plex-mono-latin-500.woff2") format("woff2"); font-weight: 500 700; font-style: normal; font-display: swap; }

@view-transition { navigation: auto; }

:root {
  --paper: #FBFBF8;
  --surface: #FFFFFF;
  --tint: #F1F4F1;
  --ink: #121817;
  --ink-2: #3E4947;
  --ink-3: #65706E;
  --rule: #DCDFD9;
  --rule-2: #BEC4BD;
  --heavy: #121817;
  --accent: #00716B;
  --accent-tint: #E5F0EE;
  --brand: #153C3B;
  --on-brand: #FFFFFF;
  --logo-ink: #153C3B;
  --logo-accent: #007F78;
  --prod: #1B6A49;
  --demo: #8A5A0F;
  --prom: #504896;
  --due: #9A5A06;
  --wrap: 1180px;
  --gutter: clamp(16px, 4vw, 36px);
  --serif: "Newsreader", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --ease: cubic-bezier(.2, .7, .2, 1);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0F1413; --surface: #151B1A; --tint: #18201F;
    --ink: #E6EBE9; --ink-2: #B4BEBB; --ink-3: #8B9794;
    --rule: #263130; --rule-2: #35423F; --heavy: #E6EBE9;
    --accent: #5CC6BA; --accent-tint: #15302C;
    --brand: #5CC6BA; --on-brand: #0B1312;
    --logo-ink: #E2EEEC; --logo-accent: #2EC4B6;
    --prod: #6FCF9F; --demo: #E5B062; --prom: #ABA2F0; --due: #E5B062;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0F1413; --surface: #151B1A; --tint: #18201F;
  --ink: #E6EBE9; --ink-2: #B4BEBB; --ink-3: #8B9794;
  --rule: #263130; --rule-2: #35423F; --heavy: #E6EBE9;
  --accent: #5CC6BA; --accent-tint: #15302C;
  --brand: #5CC6BA; --on-brand: #0B1312;
  --logo-ink: #E2EEEC; --logo-accent: #2EC4B6;
  --prod: #6FCF9F; --demo: #E5B062; --prom: #ABA2F0; --due: #E5B062;
  color-scheme: dark;
}
.tier-prod { --tier: var(--prod); }
.tier-demo { --tier: var(--demo); }
.tier-prom { --tier: var(--prom); }

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: 20px; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 1.0625rem/1.6 var(--sans); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
main { display: block; }
main:focus { outline: none; }
svg { display: block; flex: none; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: .18em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
h1, h2, h3, h4 { margin: 0; font-family: var(--serif); font-weight: 500; line-height: 1.15; letter-spacing: -.005em; color: var(--ink); text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; }
time, .num { font-variant-numeric: tabular-nums; }
::selection { background: var(--accent-tint); color: var(--ink); }
.wrap { width: 100%; max-width: calc(var(--wrap) + 2 * var(--gutter)); margin-inline: auto; padding-left: max(var(--gutter), env(safe-area-inset-left)); padding-right: max(var(--gutter), env(safe-area-inset-right)); }
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
html:not(.js) .js-only { display: none !important; }
.i { width: 1.05em; height: 1.05em; }
.muted { color: var(--ink-3); }
.sep, .dot { color: var(--rule-2); }
.skip { position: absolute; left: 12px; top: -60px; z-index: 100; padding: 10px 16px; background: var(--brand); color: var(--on-brand); font-weight: 600; text-decoration: none; }
.skip:focus { top: 12px; }

/* small caps labels: the house voice for section names and categories */
.kicker, .sec-label, .col-head h2, .col-title, .minor-head, .h-sub, .side-label, .l-day h3, .ag-day-title, .cal-title, .filter-label, .prog-kind, .track, .claim-tier, .claim-body h4, .subject h4, .doc-deadline span, .footer-col h2, .legend dt .ev {
  font-family: var(--sans); font-weight: 600; font-size: .78rem; line-height: 1.4; letter-spacing: .07em; text-transform: uppercase; font-style: normal;
}

/* ---------- buttons and toggles ---------- */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 16px; border: 1px solid transparent; border-radius: 2px; font: 600 .92rem/1.1 var(--sans); text-decoration: none; cursor: pointer; transition: background-color .2s, color .2s, border-color .2s; }
.btn .i { width: 16px; height: 16px; }
.btn-primary { background: var(--brand); color: var(--on-brand); }
.btn-primary:hover { background: var(--ink); color: var(--paper); }
.btn-ghost { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.btn-sm { padding: 8px 13px; font-size: .86rem; }
.btn-text { display: inline-flex; align-items: center; gap: 6px; padding: 4px 0; border: 0; background: none; color: var(--accent); font: 500 .88rem var(--sans); cursor: pointer; white-space: nowrap; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .2em; }
.btn-text .i { width: 15px; height: 15px; }
.icon-btn { display: inline-grid; place-items: center; width: 34px; height: 34px; border: 1px solid var(--rule-2); border-radius: 2px; background: transparent; color: var(--ink-2); cursor: pointer; }
.icon-btn:hover { color: var(--ink); border-color: var(--ink); }
.icon-btn .i { width: 16px; height: 16px; }
.theme-toggle .i-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .i-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .i-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .i-sun { display: block; }
  :root:not([data-theme="light"]) .theme-toggle .i-moon { display: none; }
}
/* filters are words, not pills */
.chips { display: flex; flex-wrap: wrap; gap: 4px 18px; }
.chip { display: inline-flex; align-items: baseline; gap: 5px; padding: 4px 0 3px; border: 0; border-bottom: 2px solid transparent; background: none; color: var(--ink-2); font: 500 .92rem/1.3 var(--sans); cursor: pointer; transition: color .2s, border-color .2s; }
.chip:hover { color: var(--ink); border-bottom-color: var(--rule-2); }
.chip .n { font: 400 .76rem var(--mono); color: var(--ink-3); }
.chip[aria-pressed="true"] { color: var(--ink); font-weight: 600; border-bottom-color: var(--accent); }
.chip:focus-visible { outline-offset: 0; }

/* labels inside running text */
.kickers { display: flex; flex-wrap: wrap; align-items: baseline; }
.meta > span, .erow-meta > * { white-space: nowrap; }
.meta > span:has(a), .erow-meta > .erow-venue, .erow-meta > .erow-series { white-space: normal; }
.kickers > * + *::before { content: "/"; margin: 0 .5em; color: var(--rule-2); font-weight: 400; }
.meta { display: flex; flex-wrap: wrap; align-items: baseline; margin-top: 8px; font-size: .82rem; color: var(--ink-3); }
.meta > span:not(:last-child)::after { content: "·"; margin: 0 .45em; color: var(--rule-2); }
.meta a { color: var(--ink-2); }
.src { color: var(--ink-2); font-weight: 500; }
.ev, .trk { font: 600 .72rem/1.4 var(--sans); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); }
.ev-paper { color: var(--prod); }
.ev-preprint { color: var(--prom); }
.ev-announcement { color: var(--demo); }
.badge { font: 600 .68rem/1 var(--sans); letter-spacing: .07em; text-transform: uppercase; color: var(--accent); white-space: nowrap; vertical-align: .1em; margin-left: 4px; }
.tag { font: 500 .74rem var(--sans); color: var(--ink-3); }
.tag + .tag::before { content: "·"; margin-right: 6px; color: var(--rule-2); }
.rank { font: 500 1.05rem/1.3 var(--serif); color: var(--ink-3); }

/* ---------- masthead ---------- */
.announce { background: var(--brand); color: var(--on-brand); font-size: .9rem; }
.announce p { padding-block: 8px; text-align: center; }
.announce a { color: inherit; font-weight: 600; }
.site-header { border-bottom: 4px double var(--heavy); background: var(--paper); view-transition-name: masthead; }
.dateline { border-bottom: 1px solid var(--rule); font-size: .8rem; color: var(--ink-3); }
.dl-row { display: flex; justify-content: space-between; gap: 16px; padding-block: 6px; }
.dl-links { display: flex; gap: 18px; }
.dl-links a { color: var(--ink-3); text-decoration: none; }
.dl-links a:hover { color: var(--ink); text-decoration: underline; }
.header-row { display: flex; align-items: center; gap: 32px; min-height: 76px; }
.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; color: var(--ink); text-decoration: none; }
.brand .logo-emblem { height: 40px; width: auto; }
.brand .logo-word { height: 36px; width: auto; }
.lg-ink { fill: var(--logo-ink); }
.lg-acc { fill: var(--logo-accent); }
.site-nav ul { display: flex; gap: 24px; }
.site-nav a { display: block; padding: 6px 0 4px; border-bottom: 2px solid transparent; color: var(--ink-2); font-size: .95rem; font-weight: 500; text-decoration: none; white-space: nowrap; transition: color .2s, border-color .2s; }
.site-nav a:hover { color: var(--ink); border-bottom-color: var(--rule-2); }
.site-nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--ink); }
.header-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
@media (max-width: 899px) {
  .header-row { flex-wrap: wrap; gap: 6px 14px; padding-block: 12px 4px; min-height: 0; }
  .brand .logo-emblem { height: 32px; }
  .brand .logo-word { height: 29px; }
  .site-nav { order: 3; width: 100%; overflow-x: auto; scrollbar-width: none; }
  .site-nav::-webkit-scrollbar { display: none; }
  .site-nav ul { gap: 18px; }
  .site-nav a { padding: 8px 0 6px; }
  .dl-links { display: none; }
}

/* ---------- page and section heads ---------- */
.page-head { padding-block: clamp(32px, 5vw, 56px) clamp(24px, 4vw, 36px); border-bottom: 1px solid var(--rule); }
.kicker { color: var(--accent); margin-bottom: 10px; }
.page-head h1 { max-width: 22em; font-size: clamp(2.1rem, 4.4vw, 3.3rem); line-height: 1.06; letter-spacing: -.015em; }
.page-head .lede, .page-head .standfirst { margin-top: 16px; max-width: 42em; font: 400 clamp(1.08rem, 1.5vw, 1.22rem)/1.5 var(--serif); color: var(--ink-2); }
.edition { margin-top: 14px; font-size: .84rem; color: var(--ink-3); }
.edition time { color: var(--ink-2); }
.subscribe { margin-top: 8px; font-size: .9rem; color: var(--ink-2); }
.checked { margin-top: 14px; font-size: .84rem; color: var(--ink-3); }
.jump { display: flex; flex-wrap: wrap; gap: 6px 20px; margin-top: 20px; padding-top: 12px; border-top: 1px solid var(--rule); }
.jump a { font-size: .9rem; color: var(--ink-2); text-decoration: none; }
.jump a:hover { color: var(--ink); text-decoration: underline; }
.page-head .hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.nf { min-height: 50vh; }

.section { padding-block: clamp(36px, 5vw, 60px); }
.sec-head { margin-bottom: clamp(18px, 3vw, 28px); padding-top: 10px; border-top: 2px solid var(--heavy); }
.sec-label { color: var(--accent); }
.sec-title { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 6px 24px; margin-top: 4px; }
.sec-head h2 { font-size: clamp(1.45rem, 2.4vw, 1.95rem); max-width: 30em; }
.sec-intro { margin-top: 8px; max-width: 46em; font: 400 1.05rem/1.5 var(--serif); color: var(--ink-2); }
.sec-link, .more { font: 500 .86rem var(--sans); color: var(--accent); text-decoration: none; white-space: nowrap; }
.sec-link .i { display: none; }
.sec-link::after, .more::after { content: " \2192"; }
.sec-link:hover, .more:hover { text-decoration: underline; }
.col-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding-top: 8px; border-top: 2px solid var(--heavy); margin-bottom: 14px; }
.col-head h2 { color: var(--ink); }
.col-intro { margin-bottom: 14px; font: 400 1rem/1.5 var(--serif); color: var(--ink-2); }
.minor-head, .h-sub { margin: 22px 0 10px; color: var(--ink-3); }
.two-up { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 56px); }
@media (max-width: 859px) { .two-up { grid-template-columns: 1fr; } }
.two-col { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(24px, 5vw, 64px); align-items: start; }
@media (max-width: 859px) { .two-col { grid-template-columns: 1fr; } }
.note { margin-top: 18px; font-size: .88rem; color: var(--ink-3); max-width: 64em; }
.empty { padding: 18px 0; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); color: var(--ink-2); }
.empty-title { font: 500 1.15rem/1.3 var(--serif); color: var(--ink); margin-bottom: 4px; }
.callouts { display: grid; gap: 10px; margin-top: 22px; }
.callout { display: flex; gap: 10px; align-items: flex-start; padding: 2px 0 2px 14px; border-left: 2px solid var(--rule-2); color: var(--ink-2); font-size: .95rem; }
.callout strong { color: var(--ink); }
.callout .i { width: 18px; height: 18px; margin-top: 3px; color: var(--accent); }
.callout-closed { border-left-color: var(--due); }
.callout-new, .callout-novice { border-left-color: var(--accent); }
.callout-novice { margin-top: 22px; }

/* numbered columns of short parallel ideas */
.ruled { display: grid; gap: 0 32px; counter-reset: rl; }
.ruled-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.ruled-1 { grid-template-columns: 1fr; }
@media (max-width: 899px) { .ruled-3 { grid-template-columns: 1fr; } }
.ruled > li { padding: 14px 0 20px; border-top: 1px solid var(--rule); }
.ruled-n { font: 600 .76rem/1.4 var(--sans); letter-spacing: .07em; text-transform: uppercase; color: var(--accent); }
.ruled h3 { margin-top: 6px; font-size: 1.22rem; }
.ruled p:not(.ruled-n) { margin-top: 6px; color: var(--ink-2); font-size: .96rem; }
.ruled .ruled-foot { margin-top: 10px; padding-top: 8px; border-top: 1px dotted var(--rule-2); color: var(--ink-3); font-size: .9rem; }
.steps { counter-reset: st; display: grid; gap: 10px; }
.steps li { counter-increment: st; position: relative; padding-left: 28px; color: var(--ink-2); font-size: .96rem; }
.steps li::before { content: counter(st) "."; position: absolute; left: 0; top: 0; font: 500 1rem/1.55 var(--serif); color: var(--accent); }
.more-link { margin-top: 14px; font-size: .94rem; }

/* ---------- front page ---------- */
.front { padding-block: 22px clamp(36px, 5vw, 56px); }
.front-top { display: grid; grid-template-columns: minmax(0, auto) minmax(0, 1fr); gap: 12px 40px; align-items: end; padding-bottom: 18px; margin-bottom: 26px; border-bottom: 1px solid var(--rule); }
.motto { font: italic 400 clamp(1.7rem, 3.2vw, 2.5rem)/1.05 var(--serif); letter-spacing: -.01em; color: var(--ink); }
.front-blurb { max-width: 40em; font-size: .97rem; color: var(--ink-2); justify-self: end; }
@media (max-width: 899px) { .front-top { grid-template-columns: 1fr; } .front-blurb { justify-self: start; } }
.front-grid { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 0 36px; }
.front-side { padding-left: 32px; border-left: 1px solid var(--rule); }
@media (max-width: 979px) { .front-grid { grid-template-columns: 1fr; } .front-side { padding-left: 0; border-left: 0; margin-top: 36px; } }
.lead { padding-bottom: 20px; border-bottom: 1px solid var(--rule); }
.kickers { margin-bottom: 6px; }
.lead-title { font-size: clamp(1.75rem, 3.2vw, 2.55rem); line-height: 1.08; letter-spacing: -.012em; }
.lead-title a, .sub-title a, .srow-title a, .l-title a, .erow-title a, .series a, .programme h3 a { color: var(--ink); text-decoration: none; }
.lead-title a:hover, .sub-title a:hover, .srow-title a:hover, .l-title a:hover, .erow-title a:hover, .series a:hover, .programme h3 a:hover { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .16em; }
.standfirst { margin-top: 10px; max-width: 40em; font: 400 1.12rem/1.5 var(--serif); color: var(--ink-2); }
.why { margin-top: 10px; font-size: .86rem; color: var(--ink-3); font-style: italic; }
.subs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.sub { padding: 16px 0 18px; border-bottom: 1px solid var(--rule); }
.sub:nth-child(odd) { padding-right: 20px; border-right: 1px solid var(--rule); }
.sub:nth-child(even) { padding-left: 20px; }
@media (max-width: 639px) { .subs { grid-template-columns: 1fr; } .sub:nth-child(n) { padding-left: 0; padding-right: 0; border-right: 0; } }
.sub-title { font-size: 1.22rem; line-height: 1.2; }
.sub-text { margin-top: 6px; font-size: .92rem; color: var(--ink-2); }
.front-main .edition { margin-top: 14px; }

.listing { display: grid; gap: 14px; }
.l-day h3 { padding-bottom: 6px; border-bottom: 1px solid var(--rule); color: var(--ink-2); }
.lrow { display: grid; grid-template-columns: 56px minmax(0, 1fr); gap: 10px; padding: 9px 0; border-bottom: 1px dotted var(--rule-2); }
.lrow:last-child { border-bottom: 0; }
.l-time { font: 400 .78rem/1.7 var(--mono); color: var(--ink-3); }
.l-title { font: 500 1.02rem/1.3 var(--serif); }
.l-meta { margin-top: 2px; font-size: .8rem; color: var(--ink-3); }
.pick-tag { display: block; margin-bottom: 2px; font: 600 .68rem/1.4 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
.tbc { font-style: italic; color: var(--ink-3); }
.side-note { margin-top: 24px; padding-top: 8px; border-top: 2px solid var(--heavy); }
.side-label { color: var(--ink-2); margin-bottom: 8px; }
.dl-item time { font: 500 1.3rem/1.2 var(--serif); }
.dl-item .rel { margin-left: 6px; font: 400 .8rem var(--mono); color: var(--accent); white-space: nowrap; }
.dl-what { margin-top: 4px; font-size: .9rem; color: var(--ink-2); }
.side-note .more { display: inline-block; margin-top: 10px; }
.fc-none { font-size: .9rem; color: var(--ink-2); }

.programme { counter-reset: pg; display: grid; }
.programme li { counter-increment: pg; position: relative; padding: 12px 0 14px 34px; border-bottom: 1px solid var(--rule); }
.programme li::before { content: counter(pg); position: absolute; left: 0; top: 10px; font: 500 1.3rem/1 var(--serif); color: var(--accent); }
.prog-kind { color: var(--ink-3); font-size: .72rem; }
.prog-when { margin-left: 8px; font-weight: 400; letter-spacing: .02em; text-transform: none; color: var(--ink-3); }
.programme h3 { margin-top: 2px; font-size: 1.1rem; line-height: 1.25; }
.programme p:not(.prog-kind) { margin-top: 4px; font-size: .9rem; color: var(--ink-2); }
.programme-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 36px; }
@media (max-width: 759px) { .programme-2 { grid-template-columns: 1fr; } }

.ladder-table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.ladder-table th, .ladder-table td { padding: 10px 10px 10px 0; text-align: left; vertical-align: top; border-bottom: 1px solid var(--rule); }
.ladder-table thead th { padding-top: 0; font: 600 .72rem/1.4 var(--sans); letter-spacing: .07em; text-transform: uppercase; color: var(--ink-3); border-bottom: 1px solid var(--rule-2); }
.ladder-table tbody th { font-weight: 500; white-space: nowrap; }
.ladder-table tbody th a { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); font: 500 1.02rem var(--serif); text-decoration: none; }
.ladder-table tbody th a:hover { text-decoration: underline; }
.ladder-table .num { text-align: right; font: 400 .9rem var(--mono); color: var(--tier, var(--ink)); padding-right: 16px; }
.ladder-table td:last-child { color: var(--ink-2); }
.ladder-table td:last-child a { color: var(--ink-2); }
.ladder-table .rung { width: 13px; height: 14px; }
.routes-list li { border-bottom: 1px solid var(--rule); }
.routes-list a { display: grid; grid-template-columns: 46px minmax(0, auto) minmax(0, 1fr); gap: 4px 12px; align-items: baseline; padding: 11px 0; color: var(--ink); text-decoration: none; }
.routes-list a:hover .rl-t { text-decoration: underline; }
.rl-n { font: 500 1.3rem/1 var(--serif); color: var(--accent); }
.rl-t { font: 500 1.05rem var(--serif); }
.rl-d { font-size: .86rem; color: var(--ink-3); }
@media (max-width: 559px) { .routes-list a { grid-template-columns: 40px 1fr; } .rl-d { grid-column: 2; } }

.join-links { display: grid; border-top: 1px solid var(--rule); }
.join-link, .join-email { display: flex; align-items: baseline; gap: 14px; padding: 11px 0; border-bottom: 1px solid var(--rule); color: var(--ink); text-decoration: none; }
.join-link:hover .jl-title { text-decoration: underline; }
.join-link > .i { margin-left: auto; width: 16px; height: 16px; color: var(--ink-3); align-self: center; }
.jl-icon { display: none; }
.jl-text { display: flex; flex-direction: column; min-width: 0; }
.jl-title { font: 500 1.05rem var(--serif); }
.jl-sub { font-size: .88rem; color: var(--ink-3); overflow-wrap: anywhere; }
a.jl-sub { color: var(--accent); }
.join-email .btn-text { margin-left: auto; }

/* ---------- briefing ---------- */
.brief { max-width: 980px; }
.cols { display: grid; }
.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.col { padding: 0 20px 18px; border-left: 1px solid var(--rule); }
.cols-3 > .col:nth-child(3n+1), .cols-2 > .col:nth-child(2n+1) { padding-left: 0; border-left: 0; }
.cols-3 > .col:nth-child(n+4) { padding-top: 18px; border-top: 1px solid var(--rule); }
@media (max-width: 899px) {
  .cols-3, .cols-2 { grid-template-columns: 1fr; }
  .col, .cols-3 > .col:nth-child(n) { padding: 16px 0; border-left: 0; border-top: 1px solid var(--rule); }
  .col:first-child { border-top: 0; padding-top: 0; }
}
.col-title { padding-bottom: 6px; border-bottom: 1px solid var(--rule-2); color: var(--ink); }
.col-empty { padding-top: 10px; font-size: .9rem; }
.srows { display: grid; }
.srow { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 10px; padding: 11px 0; border-bottom: 1px solid var(--rule); }
.srow:last-child { border-bottom: 0; }
.srow > .rank { min-width: 1.2em; }
.srow-main { grid-column: 2; }
.srow:not(:has(> .rank)) .srow-main { grid-column: 1 / -1; }
.srow-title { font-size: 1.04rem; line-height: 1.28; }
.srow .meta { margin-top: 5px; }
.srows-2col { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 36px; }
.srows-2col .srow:nth-last-child(2):nth-child(odd) { border-bottom: 0; }
@media (max-width: 759px) { .srows-2col { grid-template-columns: 1fr; } }
.fine-text { display: grid; gap: 10px; max-width: 46em; font-size: .94rem; color: var(--ink-2); }
.legend { display: grid; gap: 8px; margin: 0; }
.legend div { display: grid; grid-template-columns: 170px minmax(0, 1fr); gap: 12px; align-items: baseline; padding-bottom: 8px; border-bottom: 1px dotted var(--rule-2); }
.legend dd { margin: 0; font-size: .9rem; color: var(--ink-2); }
.sources-box { margin-top: 18px; border-top: 1px solid var(--rule); }
.sources-box summary { padding: 10px 0; cursor: pointer; font-size: .92rem; color: var(--ink-2); }
.sources-box ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 24px; padding-bottom: 8px; }
.sources-box li { display: flex; justify-content: space-between; gap: 10px; padding: 5px 0; border-bottom: 1px dotted var(--rule-2); font-size: .84rem; }
.sources-box li span:last-child { font: 400 .78rem var(--mono); color: var(--ink-3); white-space: nowrap; }
.sources-box li.down span:last-child { color: var(--due); }
@media (max-width: 599px) { .sources-box ul { grid-template-columns: 1fr; } .legend div { grid-template-columns: 1fr; gap: 2px; } }

/* ---------- events ---------- */
.cal-months { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; }
@media (max-width: 859px) { .cal-months { grid-template-columns: 1fr; } }
.cal-title { margin-bottom: 8px; color: var(--ink); }
.cal-grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); border-top: 1px solid var(--heavy); border-left: 1px solid var(--rule); }
.cal-h { padding: 5px 6px; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); font: 600 .68rem var(--sans); letter-spacing: .06em; color: var(--ink-3); }
.cal-cell { position: relative; display: flex; flex-direction: column; justify-content: space-between; min-height: 56px; padding: 5px 6px; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); color: var(--ink-2); font: 400 .8rem var(--mono); text-decoration: none; }
.cal-pad { background: var(--tint); }
.cal-cell.is-past { color: var(--rule-2); }
.cal-cell.is-today .cal-d { display: inline-grid; place-items: center; min-width: 1.7em; height: 1.7em; margin: -2px 0 0 -3px; border-radius: 50%; background: var(--ink); color: var(--paper); }
a.cal-cell { color: var(--ink); transition: background-color .15s; }
a.cal-cell:hover { background: var(--tint); }
a.cal-cell[aria-current="date"] { background: var(--ink); color: var(--paper); }
a.cal-cell[aria-current="date"] .cal-n { color: var(--paper); }
.cal-n { position: absolute; top: 5px; right: 6px; font-size: .68rem; color: var(--ink-3); }
.cal-mk { display: flex; gap: 3px; }
.mk { display: inline-block; width: 7px; height: 7px; }
.mk-ours { background: var(--accent); }
.mk-cambridge { background: var(--ink-2); }
.mk-deadline { background: var(--due); transform: rotate(45deg) scale(.85); }
.cal-legend { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 12px; font-size: .82rem; color: var(--ink-3); }
.cal-legend span { display: inline-flex; align-items: center; gap: 7px; }

.ag-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: clamp(28px, 4vw, 48px); align-items: start; }
@media (max-width: 979px) { .ag-layout { grid-template-columns: 1fr; } }
.filters { display: grid; gap: 6px; padding: 8px 0 12px; margin-bottom: 6px; border-bottom: 1px solid var(--rule); }
.filter-row { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 8px; align-items: baseline; }
.filter-label { color: var(--ink-3); font-size: .7rem; }
@media (max-width: 559px) { .filter-row { grid-template-columns: 1fr; gap: 0; } }
.ag-status { font-size: .84rem; color: var(--ink-3); }
.ag-week { margin-top: 26px; }
.ag-week-title { display: flex; align-items: baseline; gap: 12px; padding: 8px 0 6px; border-top: 2px solid var(--heavy); font-size: 1.25rem; }
.ag-week-title .n { margin-left: auto; font: 400 .8rem var(--sans); color: var(--ink-3); }
.ag-day { scroll-margin-top: 24px; }
.ag-day-title { margin-top: 14px; padding-bottom: 4px; border-bottom: 1px solid var(--rule-2); color: var(--accent); }
.erows { display: grid; }
.erow { display: grid; grid-template-columns: 96px minmax(0, 1fr) auto; gap: 4px 16px; padding: 12px 0; border-bottom: 1px solid var(--rule); align-items: baseline; }
.erow:last-child { border-bottom: 0; }
.erow-time { font: 400 .8rem var(--mono); color: var(--ink-3); }
.erow-title { font: 500 1.12rem/1.28 var(--serif); }
.erow-who { margin-top: 2px; font-size: .9rem; color: var(--ink-2); }
.erow-meta { margin-top: 5px; gap: 0; font-size: .8rem; color: var(--ink-3); }
.erow-meta > * + *::before { content: "·"; margin: 0 .45em; color: var(--rule-2); }
.ek { font-weight: 600; font-size: .7rem; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); }
.ek-ours { color: var(--accent); }
.ek-deadline { color: var(--due); }
.ek-first { color: var(--prod); }
.erow-series a { color: var(--ink-3); }
.erow-abs { margin-top: 6px; }
.erow-abs summary { cursor: pointer; font-size: .82rem; color: var(--accent); }
.erow-abs p { margin-top: 6px; max-width: 62em; font-size: .92rem; color: var(--ink-2); }
.erow-add { font-size: .8rem; color: var(--ink-3); white-space: nowrap; }
.erow-add:hover { color: var(--accent); }
.erow-ours .erow-title a { color: var(--accent); }
.erow-deadline .erow-time { color: var(--due); }
@media (max-width: 639px) { .erow { grid-template-columns: 1fr; } .erow-add { justify-self: start; } }
.ag-empty { padding: 18px 0; color: var(--ink-2); }
.ag-side .minor-head:first-child { margin-top: 0; }
.series li { padding: 9px 0; border-bottom: 1px solid var(--rule); }
.series a { font: 500 1rem/1.3 var(--serif); }
.series p { margin-top: 2px; font-size: .8rem; color: var(--ink-3); }
.filterbar { position: sticky; top: 0; z-index: 20; background: var(--paper); border-bottom: 1px solid var(--rule); }
.filterbar-row { display: flex; align-items: center; gap: 16px; }
.filterbar .chips { flex: 1; padding-block: 10px; }
@media (max-width: 559px) { .filterbar [data-expand-all] { display: none; } }

/* ---------- the ladder ---------- */
.tier-key { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 26px; border-top: 1px solid var(--heavy); }
@media (max-width: 859px) { .tier-key { grid-template-columns: 1fr; } }
.tier-key li + li { border-left: 1px solid var(--rule); }
@media (max-width: 859px) { .tier-key li + li { border-left: 0; border-top: 1px solid var(--rule); } }
.tier-key a { display: block; height: 100%; padding: 12px 16px 14px; color: var(--ink); text-decoration: none; }
.tier-key li:first-child a { padding-left: 0; }
@media (max-width: 859px) { .tier-key a { padding-left: 0; } }
.tier-key a:hover .tk-name { text-decoration: underline; }
.tk-name { display: flex; align-items: center; gap: 8px; font: 500 1.15rem var(--serif); }
.tk-n { margin-left: auto; font: 400 .9rem var(--mono); color: var(--tier); }
.tk-bar { display: block; margin-top: 4px; font-size: .9rem; color: var(--ink-2); }
.rung { width: 15px; height: 16px; color: var(--tier, var(--ink)); }
.rung .rail { fill: none; stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; }
.rung .on { fill: currentColor; }
.rung .off { fill: none; stroke: currentColor; stroke-width: 1; stroke-opacity: .5; }
.tier { padding-block: clamp(28px, 4vw, 44px) 8px; }
.tier-head { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 14px; align-items: baseline; padding-top: 10px; margin-bottom: 4px; border-top: 3px solid var(--tier); }
.tier-head > .rung { width: 22px; height: 24px; align-self: center; }
.tier-head h2 { font-size: clamp(1.55rem, 2.8vw, 2.1rem); }
.tier-def { margin-top: 2px; max-width: 48em; font: 400 1.02rem/1.45 var(--serif); color: var(--ink-2); }
.tier-count { font: 400 .82rem var(--mono); color: var(--tier); white-space: nowrap; }
@media (max-width: 559px) { .tier-head { grid-template-columns: auto minmax(0, 1fr); } .tier-count { grid-column: 2; } }
.tier-empty { padding: 16px 0 8px; color: var(--ink-3); }
.claims { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); column-gap: 28px; align-items: start; }
@media (max-width: 999px) { .claims { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 639px) { .claims { grid-template-columns: 1fr; } }
.claim { display: flex; flex-direction: column; padding-top: 14px; border-top: 1px solid var(--rule); margin-top: 14px; scroll-margin-top: 24px; }
.claim:target { background: var(--accent-tint); box-shadow: 0 0 0 8px var(--accent-tint); }
.claim-top { order: -2; display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.track { color: var(--ink-3); font-size: .7rem; }
.claim-tier { display: inline-flex; align-items: center; gap: 6px; color: var(--tier); font-size: .68rem; }
.claim-tier .rung { width: 11px; height: 12px; }
.claim-metric { order: -1; margin-top: 8px; font: 500 .9rem/1.35 var(--mono); color: var(--tier); }
.claim-title { margin-top: 4px; font-size: 1.24rem; line-height: 1.22; }
.claim-lede { margin-top: 6px; font-size: .95rem; color: var(--ink-2); }
.claim-more { margin-top: 10px; border-top: 1px dotted var(--rule-2); }
.claim-more summary { display: flex; align-items: center; justify-content: space-between; padding: 8px 0 10px; list-style: none; cursor: pointer; color: var(--accent); font-size: .86rem; font-weight: 500; }
.claim-more summary::-webkit-details-marker { display: none; }
.claim-more summary:hover span { text-decoration: underline; }
.claim-more .chev { width: 16px; height: 16px; transition: transform .25s var(--ease); }
.claim-more[open] .chev { transform: rotate(180deg); }
.claim-body { padding-bottom: 14px; }
.claim-body h4 { margin-top: 4px; color: var(--ink-3); font-size: .68rem; }
.claim-body p { margin: 4px 0 12px; font-size: .94rem; color: var(--ink-2); }
.sources { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 8px; margin-top: 16px; font-size: .8rem; color: var(--ink-3); }
.sources > span { font: 600 .68rem var(--sans); letter-spacing: .07em; text-transform: uppercase; margin-right: 2px; }
.cite { font: 500 .8rem var(--mono); color: var(--accent); text-decoration: none; }
.cite::before { content: "["; color: var(--ink-3); }
.cite::after { content: "]"; color: var(--ink-3); }
.cite:hover { text-decoration: underline; }
.cite-tip { position: absolute; z-index: 60; width: min(380px, calc(100vw - 32px)); padding: 10px 12px; border: 1px solid var(--ink); background: var(--surface); color: var(--ink); font-size: .86rem; line-height: 1.45; box-shadow: 4px 4px 0 var(--rule); }
.cite-tip b { color: var(--accent); font-family: var(--mono); font-weight: 500; margin-right: 6px; }
.loop { margin: 26px 0 0; padding-top: 12px; border-top: 1px solid var(--heavy); }
.loop figcaption { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 16px; }
.loop-title { font: 500 1.1rem var(--serif); }
.loop-note { font-size: .82rem; color: var(--ink-3); font-style: italic; }
.loop-rows { display: grid; gap: 12px; margin-top: 18px; }
.loop-row { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 18px; align-items: center; }
.loop-label { display: flex; flex-direction: column; font-size: .94rem; }
.loop-range { font-size: .8rem; color: var(--ink-3); }
.loop-track { position: relative; height: 10px; border-left: 1px solid var(--rule-2); border-right: 1px solid var(--rule-2); background: linear-gradient(var(--rule), var(--rule)) center / 100% 1px no-repeat; }
.loop-bar { position: absolute; top: 0; bottom: 0; background: var(--accent); transform-origin: left; }
.motion .loop:not(.is-in) .loop-bar { transform: scaleX(0); }
.motion .loop.is-in .loop-bar { transition: transform .9s var(--ease) .15s; }
.lb-proof { left: 0; width: 21%; }
.lb-forecast { left: 58.1%; width: 11.7%; }
.lb-synth { left: 68%; width: 16.7%; }
.lb-trial { left: 88.2%; width: 11.8%; }
.loop-axis { position: relative; height: 20px; margin: 10px 0 0 238px; font: 400 .72rem var(--mono); color: var(--ink-3); }
.loop-axis span { position: absolute; top: 0; transform: translateX(-50%); white-space: nowrap; }
.loop-axis .t0 { left: 0; transform: none; }
.loop-axis .t1 { left: 20.9%; }
.loop-axis .t2 { left: 41.8%; }
.loop-axis .t3 { left: 58.1%; }
.loop-axis .t4 { left: 75.5%; }
.loop-axis .t5 { left: 88.2%; }
.loop-axis .t6 { left: 100%; transform: translateX(-100%); }
@media (max-width: 859px) { .loop-axis .t6 { display: none; } }
@media (max-width: 699px) { .loop-row { grid-template-columns: 1fr; gap: 4px; } .loop-axis { margin-left: 0; } .loop-axis .t1, .loop-axis .t2, .loop-axis .t4 { display: none; } }
.refs { display: grid; max-width: 1000px; }
.ref { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 8px; padding: 9px 0; border-bottom: 1px solid var(--rule); font-size: .9rem; scroll-margin-top: 24px; }
.ref:target { background: var(--accent-tint); }
.ref-n { font: 400 .82rem/1.6 var(--mono); color: var(--ink-3); }
.ref-cite { color: var(--ink); }
.ref-link { font: 400 .8rem var(--mono); overflow-wrap: anywhere; }
.ref-in { margin-top: 3px; font-size: .8rem; color: var(--ink-3); }
.ref-in a { color: var(--ink-3); }

/* ---------- routes in ---------- */
.timeline { border-top: 1px solid var(--rule); }
.tl-item { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 4px 24px; padding: 14px 0; border-bottom: 1px solid var(--rule); }
@media (max-width: 649px) { .tl-item { grid-template-columns: 1fr; } }
.tl-date time { display: block; font: 500 1.08rem var(--serif); }
.rel { white-space: nowrap; }
.tl-date .rel { display: block; margin-top: 2px; font: 400 .8rem var(--mono); color: var(--accent); }
.tl-what { font-weight: 600; }
.tl-who { margin-top: 3px; font-size: .94rem; color: var(--ink-2); }
.tl-item.is-past, .tl-item.is-past .tl-what, .tl-item.is-past .tl-who, .tl-item.is-past .rel { color: var(--ink-3); }
.tl-item.is-past time { text-decoration: line-through; text-decoration-thickness: 1px; }
.tl-item.is-next { box-shadow: inset 3px 0 0 var(--accent); padding-left: 14px; background: var(--accent-tint); }
.tablist { position: relative; display: flex; gap: 26px; margin-bottom: 26px; border-bottom: 1px solid var(--rule-2); overflow-x: auto; scrollbar-width: none; }
.tablist::-webkit-scrollbar { display: none; }
.tab { flex: none; margin-bottom: -1px; padding: 10px 0; border: 0; background: none; color: var(--ink-2); font: 500 1.02rem var(--serif); cursor: pointer; }
.tab:hover, .tab[aria-selected="true"] { color: var(--ink); }
.tab:focus-visible { outline-offset: -2px; }
.tab .n { margin-left: 6px; font: 400 .76rem var(--mono); color: var(--ink-3); }
.tab-ink { position: absolute; left: 0; bottom: 0; height: 2px; width: var(--w, 0); transform: translateX(var(--x, 0)); background: var(--ink); transition: transform .3s var(--ease), width .3s var(--ease); }
html:not(.js) .tab-ink { display: none; }
.panel + .panel { margin-top: 56px; }
.panel-title { margin-bottom: 10px; font-size: 1.45rem; }
.tabs-on .panel + .panel { margin-top: 0; }
.tabs-on .panel-title { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.motion .tabs-on .panel:not([hidden]) { animation: fade .3s var(--ease) both; }
.panel-intro { max-width: 46em; font: 400 1.02rem/1.5 var(--serif); color: var(--ink-2); margin-bottom: 6px; }
.subject { margin-top: 24px; }
.subject h4 { margin-bottom: 2px; color: var(--ink-3); }
.module { display: grid; grid-template-columns: 64px minmax(0, 1fr) 150px; gap: 16px; align-items: baseline; padding: 12px 0; border-top: 1px solid var(--rule); }
.module-code { font: 500 .92rem var(--mono); color: var(--ink); }
.module-name { font: 500 1.06rem var(--serif); }
.module-name a { color: var(--ink); }
.module-why { margin-top: 2px; font-size: .92rem; color: var(--ink-2); }
.module-part { font-size: .82rem; color: var(--ink-3); text-align: right; }
.module.is-flag .module-code { color: var(--accent); }
@media (max-width: 639px) { .module { grid-template-columns: 52px minmax(0, 1fr); } .module-part { grid-column: 2; text-align: left; } }
.route-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 32px; margin-top: 12px; }
@media (max-width: 759px) { .route-cards { grid-template-columns: 1fr; } }
.route-card { display: flex; flex-direction: column; padding: 14px 0 16px; border-top: 1px solid var(--rule); }
.rc-meta { font-size: .84rem; color: var(--ink-3); }
.route-card h4 { margin-top: 4px; font-size: 1.14rem; }
.route-card h4 a { color: var(--ink); }
.rc-why { margin-top: 6px; font-size: .94rem; color: var(--ink-2); }
.rc-due { margin-top: auto; padding-top: 10px; font-size: .88rem; }
.rc-label { color: var(--ink-3); }
.rc-due time { font-weight: 600; }
.rc-due .rel { margin-left: 4px; font: 400 .8rem var(--mono); color: var(--accent); }
.route-card.is-past .rc-due time { text-decoration: line-through; color: var(--ink-3); }
.doc-list { border-top: 1px solid var(--rule); margin-top: 12px; }
.doc { display: grid; grid-template-columns: minmax(0, 1fr) 230px; gap: 6px 28px; padding: 14px 0; border-bottom: 1px solid var(--rule); }
@media (max-width: 699px) { .doc { grid-template-columns: 1fr; } }
.doc h4 { font-size: 1.12rem; }
.doc h4 a { color: var(--ink); }
.doc-host { margin-top: 2px; font-size: .86rem; color: var(--ink-3); }
.doc-why { margin-top: 5px; font-size: .93rem; color: var(--ink-2); }
.doc-deadline { font-size: .9rem; color: var(--ink); }
.doc-deadline span { display: block; margin-bottom: 2px; color: var(--ink-3); font-size: .66rem; }
.groups-tools { display: grid; gap: 10px; margin-bottom: 10px; }
.search { display: flex; align-items: center; gap: 10px; max-width: 520px; padding: 0 2px; border-bottom: 1px solid var(--ink); color: var(--ink-3); }
.search:focus-within { border-bottom-color: var(--accent); box-shadow: 0 1px 0 var(--accent); }
.search .i { width: 17px; height: 17px; }
.search input { flex: 1; min-width: 0; padding: 10px 0; border: 0; outline: none; background: transparent; color: var(--ink); font: 400 1rem var(--sans); }
.search input::placeholder { color: var(--ink-3); }
.groups-count { margin-bottom: 8px; font-size: .84rem; color: var(--ink-3); }
.group-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 32px; }
@media (max-width: 759px) { .group-list { grid-template-columns: 1fr; } }
.group { padding: 14px 0; border-top: 1px solid var(--rule); }
.group h4 { font-size: 1.1rem; }
.group h4 a { color: var(--ink); }
.group-people { margin-top: 3px; font-size: .88rem; color: var(--accent); }
.group-topic { margin-top: 5px; font-size: .93rem; color: var(--ink-2); }
.group-meta { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0 8px; margin-top: 6px; font-size: .8rem; color: var(--ink-3); }
.group-dept { margin-right: 6px; }
.groups-empty { padding: 18px 0; color: var(--ink-2); }
.start-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 56px); align-items: start; }
@media (max-width: 859px) { .start-grid { grid-template-columns: 1fr; } }
.res-list { border-top: 1px solid var(--rule); }
.res { display: flex; flex-direction: column; padding: 11px 0; border-bottom: 1px solid var(--rule); text-decoration: none; }
.res:hover .res-title { text-decoration: underline; }
.res-title { color: var(--ink); font: 500 1.04rem var(--serif); }
.res-body { margin-top: 2px; color: var(--ink-2); font-size: .92rem; }

/* ---------- about ---------- */
.pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.pair-col { padding: 4px 28px 8px 0; }
.pair-col + .pair-col { padding: 4px 0 8px 28px; border-left: 1px solid var(--rule); }
@media (max-width: 759px) { .pair { grid-template-columns: 1fr; } .pair-col + .pair-col { padding: 18px 0 0; border-left: 0; border-top: 1px solid var(--rule); margin-top: 14px; } }
.plain-list { display: grid; gap: 10px; }
.plain-list li { font: 400 1.08rem/1.45 var(--serif); color: var(--ink); }
.check-list li { display: flex; gap: 10px; align-items: flex-start; }
.check-list .i { width: 18px; height: 18px; margin-top: 4px; color: var(--accent); }
.check-list.big li { font-size: 1.14rem; }
.people-contact { display: grid; gap: 8px; }
.people { display: grid; border-top: 1px solid var(--rule); }
.person { display: flex; gap: 14px; padding: 11px 0; border-bottom: 1px solid var(--rule); }
.person-icon { display: none; }
.person-name { font: 500 1.1rem var(--serif); }
.person-role { color: var(--ink-2); font-size: .94rem; }
.person-dept { color: var(--ink-3); font-size: .88rem; }
.fine .h-sub, .two-col h2.h-sub { margin: 0; }

/* ---------- footer ---------- */
.site-footer { margin-top: 24px; padding-block: 36px 32px; border-top: 4px double var(--heavy); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, .8fr)); gap: 28px; }
@media (max-width: 899px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-brand { grid-column: 1 / -1; } }
.footer-logo { display: inline-block; }
.footer-logo .logo-lockup { height: 58px; width: auto; }
.footer-brand p { margin-top: 12px; max-width: 28em; font: 400 .98rem/1.45 var(--serif); color: var(--ink-2); }
.footer-col h2 { margin-bottom: 10px; color: var(--ink-3); }
.footer-col ul { display: grid; gap: 6px; }
.footer-col a { color: var(--ink-2); text-decoration: none; font-size: .9rem; }
.footer-col a:hover { color: var(--ink); text-decoration: underline; }
.footer-col p { font-size: .9rem; color: var(--ink-3); }
.contact-person { display: grid; gap: 1px; }
.cp-name { color: var(--ink); font: 500 1.02rem var(--serif); }
.cp-role { color: var(--ink-3); font-size: .86rem; }
.cp-mail { margin-top: 6px; font-size: .9rem; color: var(--accent) !important; }
.disclaimer { grid-column: 1 / -1; padding-top: 16px; border-top: 1px solid var(--rule); font-size: .8rem; color: var(--ink-3); }
.disclaimer span { display: block; max-width: 80em; }

/* ---------- motion: quiet and functional ---------- */
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes vt-out { to { opacity: 0; } }
@keyframes vt-in { from { opacity: 0; } }
.motion [data-reveal] { opacity: 0; transform: translateY(6px); }
.motion [data-reveal].is-in { opacity: 1; transform: none; transition: opacity .5s var(--ease) var(--d, 0s), transform .5s var(--ease) var(--d, 0s); }
.motion .is-shown { animation: fade .3s var(--ease) both; }
.motion .claim-more[open] .claim-body { animation: fade .3s var(--ease) both; }
.motion .cite-tip:not([hidden]) { animation: fade .15s linear both; }
::view-transition-old(root) { animation: vt-out .16s linear both; }
::view-transition-new(root) { animation: vt-in .24s linear both; }
::view-transition-group(masthead) { animation-duration: 0s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
  ::view-transition-group(*), ::view-transition-old(*), ::view-transition-new(*) { animation: none !important; }
}

@media print {
  .site-header .header-actions, .filterbar, .filters, .theme-toggle, .site-footer nav, .skip, .erow-add, .dl-links { display: none !important; }
  body { background: #fff; color: #000; }
  .claim-more > :not(summary) { display: block; }
  .section { padding-block: 18px; }
  .motion [data-reveal] { opacity: 1 !important; transform: none !important; }
}

/* ---------- society-first front page ---------- */
.society { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 0 44px; padding-top: 14px; }
.society-main { padding-right: 4px; }
.society-title { font: italic 400 clamp(2.3rem, 4.6vw, 3.6rem)/1.04 var(--serif); letter-spacing: -.015em; }
.society .standfirst { margin-top: 16px; font-size: clamp(1.08rem, 1.5vw, 1.22rem); }
.society-cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.society-side { padding-left: 32px; border-left: 1px solid var(--rule); }
.ways { counter-reset: wy; border-top: 2px solid var(--heavy); }
.ways li { counter-increment: wy; position: relative; padding: 11px 0 12px 30px; border-bottom: 1px solid var(--rule); }
.ways li::before { content: counter(wy); position: absolute; left: 0; top: 9px; font: 500 1.2rem/1 var(--serif); color: var(--accent); }
.ways h3 { font-size: 1.08rem; }
.ways p { margin-top: 2px; font-size: .9rem; color: var(--ink-2); }
.society-side .side-label { margin-bottom: 8px; }
@media (max-width: 899px) { .society { grid-template-columns: 1fr; } .society-side { padding-left: 0; border-left: 0; margin-top: 30px; } }

/* ---------- front page hierarchy: one primary, two "now" columns, one resource row ---------- */
.ways { counter-reset: none; }
.ways li { padding: 9px 0; font: 500 1.08rem/1.3 var(--serif); }
.ways li::before { content: none; }
.ways li { padding-left: 0; }
.notice { margin-top: 16px; font-size: .92rem; color: var(--ink-3); }
.now { padding-top: 8px; }
.now-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 48px; }
@media (max-width: 859px) { .now-grid { grid-template-columns: 1fr; gap: 36px; } }
.picks li { padding: 14px 0 16px; border-bottom: 1px solid var(--rule); }
.picks li:first-child { padding-top: 4px; }
.picks .when { font: 400 .8rem var(--mono); color: var(--ink-3); }
.picks h3 { margin-top: 4px; font-size: 1.2rem; line-height: 1.25; }
.picks h3 a { color: var(--ink); text-decoration: none; }
.picks h3 a:hover { text-decoration: underline; text-decoration-thickness: 1px; }
.picks .l-meta, .picks .meta { margin-top: 4px; }
.picks .kickers { margin-bottom: 2px; }
.now-col .more { display: inline-block; margin-top: 12px; }
.resources { padding-block: 0; }
.res-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--heavy); border-bottom: 1px solid var(--rule); }
.res-cell { display: flex; flex-direction: column; gap: 4px; padding: 16px 20px 18px; border-left: 1px solid var(--rule); color: var(--ink); text-decoration: none; }
.res-cell:first-child { padding-left: 0; border-left: 0; }
.res-cell:hover .res-k { text-decoration: underline; }
.res-k { font: 500 1.12rem var(--serif); }
.res-k::after { content: " \2192"; color: var(--accent); }
.res-t { font-size: .9rem; color: var(--ink-2); }
.res-t time { font-weight: 600; color: var(--ink); }
.res-t .rel { font: 400 .8rem var(--mono); color: var(--accent); }
.res-t .dl-list, .res-t .dl-item { display: inline; }
@media (max-width: 759px) { .res-row { grid-template-columns: 1fr; } .res-cell, .res-cell:first-child { padding: 14px 0; border-left: 0; border-top: 1px solid var(--rule); } .res-cell:first-child { border-top: 0; } }

/* ---------- state of the field: the map, the fields, the evidence dialog ---------- */
.fmap { border-top: 2px solid var(--heavy); }
.fmap-row { display: grid; grid-template-columns: minmax(180px, 1.1fr) repeat(3, minmax(0, 1fr)); border-bottom: 1px solid var(--rule); }
.fmap-row > * { padding: 12px 14px 12px 0; }
.fmap-row > * + * { padding-left: 14px; border-left: 1px solid var(--rule); }
.fmap-headrow > span { display: flex; align-items: center; gap: 7px; font: 600 .74rem/1.4 var(--sans); letter-spacing: .07em; text-transform: uppercase; color: var(--ink-3); }
.fmap-headrow .tier-prod, .fmap-headrow .tier-demo, .fmap-headrow .tier-prom { color: var(--tier); }
.fmap-headrow .rung { width: 12px; height: 13px; }
.fmap-field a { font: 500 1.05rem/1.3 var(--serif); color: var(--ink); text-decoration: none; }
.fmap-field a:hover { text-decoration: underline; }
.fmap-cell { display: flex; flex-wrap: wrap; align-content: flex-start; gap: 6px 14px; }
.fchip { position: relative; padding-left: 12px; font-size: .92rem; color: var(--ink); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color .2s, color .2s; }
.fchip::before { content: ""; position: absolute; left: 0; top: .55em; width: 6px; height: 6px; background: var(--tier); }
.fchip:hover { color: var(--accent); border-bottom-color: currentColor; }
.fmap-none { font-size: .84rem; color: var(--rule-2); font-style: italic; }
@media (max-width: 859px) {
  .fmap-headrow { display: none; }
  .fmap-row { grid-template-columns: 1fr; padding: 10px 0; }
  .fmap-row > *, .fmap-row > * + * { padding: 4px 0; border-left: 0; }
  .fmap-cell::before { content: attr(data-label); flex-basis: 100%; font: 600 .68rem var(--sans); letter-spacing: .07em; text-transform: uppercase; color: var(--tier); }
}
.field { padding-block: clamp(32px, 4vw, 48px); }
.field-head { padding-top: 10px; border-top: 2px solid var(--heavy); margin-bottom: 18px; }
.field-head h2 { margin-top: 4px; font-size: clamp(1.6rem, 2.8vw, 2.2rem); }
.field-summary { margin-top: 8px; max-width: 46em; font: 400 1.12rem/1.5 var(--serif); color: var(--ink-2); }
.field-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 0 40px; }
.field-side { padding-left: 32px; border-left: 1px solid var(--rule); }
@media (max-width: 979px) { .field-grid { grid-template-columns: 1fr; } .field-side { padding-left: 0; border-left: 0; margin-top: 24px; } }
.field-claims .claims { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 639px) { .field-claims .claims { grid-template-columns: 1fr; } }
.field-claims .minor-head, .field-side .minor-head:first-child { margin-top: 0; }
.field .claim-top .track { display: none; }
.field .claim-top { justify-content: flex-start; }
.field-groups li { display: flex; flex-direction: column; padding: 7px 0; border-bottom: 1px dotted var(--rule-2); }
.field-groups a { font: 500 .98rem var(--serif); color: var(--ink); text-decoration: none; }
.field-groups a:hover { text-decoration: underline; }
.field-groups span { font-size: .8rem; color: var(--ink-3); }
.field-side .more { display: inline-block; margin-top: 10px; }
.claim-dialog { width: min(640px, calc(100vw - 32px)); max-height: min(86vh, 900px); padding: 22px 26px 24px; border: 1px solid var(--ink); background: var(--paper); color: var(--ink); box-shadow: 8px 8px 0 var(--rule); }
.claim-dialog::backdrop { background: rgba(10, 16, 15, .45); }
.cd-close { position: absolute; top: 14px; right: 16px; z-index: 1; padding: 6px 8px; border: 0; background: none; color: var(--accent); font: 500 .88rem var(--sans); text-decoration: underline; cursor: pointer; }
.cd-body .claim { margin-top: 0; padding-top: 0; border-top: 0; }
.cd-body .claim-title { font-size: 1.5rem; }
.cd-body .claim-more summary { display: none; }
.motion .claim-dialog[open] { animation: fade .2s var(--ease) both; }
.cd-body .claim-top { padding-right: 64px; }