/* electron-plumber.com
 *
 * Colors: Okabe-Ito accents on a dark ground. On this site: orange = buttons, the next episode and the
 * Speculative label; sky = links, rules, kickers and the Historical label; green = the Practical label;
 * vermillion = excluded results; yellow = defined, not used. The neutrals marked "web" exist only here.
 */
/* Subsets of Source Serif 4 and IBM Plex Mono, renamed as their OFL requires (tools/make_assets.py, fonts/OFL.txt).
 * The preload in the page head names ../fonts/ep-serif.woff2 too: keep the two URLs identical. */
@font-face { font-family: "EP Serif"; src: url("../fonts/ep-serif.woff2") format("woff2"); font-weight: 400 700; font-style: normal; font-display: swap; }
@font-face { font-family: "EP Serif"; src: url("../fonts/ep-serif-italic.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "EP Mono"; src: url("../fonts/ep-mono-400.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "EP Mono"; src: url("../fonts/ep-mono-500.woff2") format("woff2"); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: "EP Mono"; src: url("../fonts/ep-mono-600.woff2") format("woff2"); font-weight: 600; font-style: normal; font-display: swap; }
:root {
  --bg: #0e1116;
  --fg: #ffffff;
  --orange: #E69F00;
  --sky: #56B4E9;
  --green: #009E73;
  --vermillion: #D55E00;
  --yellow: #F0E442;
  --panel: #151a21;      /* web */
  --plate: #0a0c10;      /* web: the title card's ground */
  --line: #232b36;       /* web */
  --field: #3d4a5c;      /* web: input borders */
  --body: #c9d1db;       /* web */
  --muted: #8b97a6;      /* web */
  --serif: "EP Serif", Georgia, "Times New Roman", serif;
  --mono: "EP Mono", ui-monospace, Menlo, monospace;
  --pad: clamp(24px, 6.667vw, 96px);
  --rail: 264px;
  --arc: transparent;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--body);
  font-family: var(--serif);
  font-size: clamp(17px, 1.32vw, 19px);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
img { height: auto; }
/* Only a wrapper for its sources: the img inside is what the layout sizes. A source still makes an (empty) box,
 * which a flex parent would space out like an item, so it is taken out of the layout too. */
picture { display: contents; }
picture > source { display: none; }
a { color: var(--sky); }
a:hover { color: #9bd3f3; }
h1, h2, h3, p, ul, ol, figure, blockquote { margin: 0; }
em { font-style: italic; }
sub, sup { line-height: 0; }
:focus-visible { outline: 2px solid var(--sky); outline-offset: 3px; }

.skip { position: absolute; left: -9999px; top: 0; z-index: 100; padding: 12px 16px; background: var(--orange); color: var(--bg); font-family: var(--mono); font-size: 13px; }
.skip:focus { left: 8px; top: 8px; }

/* The arc filament: 4 px left edge in the arc color. Episode and research pages only. */
body[data-arc]::before { content: ""; position: fixed; left: 0; top: 0; bottom: 0; width: 4px; background: var(--arc); z-index: 50; pointer-events: none; }
[data-arc="historical"]  { --arc: var(--sky); }
[data-arc="speculative"] { --arc: var(--orange); }
[data-arc="practical"]   { --arc: var(--green); }

/* ---- type */
.h1 { font-size: clamp(40px, 5vw, 72px); line-height: 1.08; font-weight: 400; letter-spacing: -0.012em; color: var(--fg); text-wrap: balance; }
.h1--hero { font-size: clamp(44px, 5.84vw, 84px); }
.h1--page { font-size: clamp(38px, 4.45vw, 64px); }
.h2 { font-size: clamp(28px, 2.78vw, 40px); line-height: 1.2; font-weight: 400; letter-spacing: -0.006em; color: var(--fg); text-wrap: balance; }
.h2--sm { font-size: clamp(26px, 2.5vw, 36px); }
.h2--row { font-size: clamp(26px, 2.36vw, 34px); }
.h3 { font-size: 24px; line-height: 1.3; font-weight: 600; color: var(--fg); }
.deck { font-size: clamp(18px, 1.67vw, 24px); line-height: 1.5; max-width: 760px; text-wrap: pretty; }
.deck--sm { font-size: clamp(18px, 1.53vw, 22px); }
.prose { max-width: 720px; text-wrap: pretty; }
.prose--lg { font-size: clamp(18px, 1.39vw, 20px); max-width: 760px; }
.small { font-size: clamp(16px, 1.25vw, 18px); line-height: 1.6; text-wrap: pretty; }
.muted { color: var(--muted); }
.white { color: var(--fg); }
.tagline { font-style: italic; color: var(--fg); font-size: clamp(20px, 1.8vw, 26px); line-height: 1.4; max-width: 720px; }
.quote { color: var(--fg); font-size: clamp(20px, 1.8vw, 26px); line-height: 1.45; text-wrap: pretty; }
.quote--lg { font-size: clamp(22px, 2.08vw, 30px); line-height: 1.4; max-width: 860px; }

.kicker { font-family: var(--mono); font-size: 13px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--sky); line-height: 20px; }
.kicker--sm { font-size: 12px; }
.kicker--white { color: var(--fg); }
.kicker--orange { color: var(--orange); }
.kicker--vermillion { color: var(--vermillion); }
.kicker--muted { color: var(--muted); }
.mono { font-family: var(--mono); font-size: 13px; letter-spacing: 0.04em; color: var(--muted); line-height: 22px; }
.mono--sky { color: var(--sky); font-size: clamp(12.5px, 1vw, 14px); }
.mono--body { color: var(--body); }

.rule { height: 2px; background: var(--sky); border: 0; margin: 0; width: 100%; }
.rule--line { height: 1px; background: var(--line); }
.rule--plate { width: min(420px, 60%); }

/* ---- badges, buttons, links */
.badge { --c: var(--fg); display: inline-flex; align-items: center; gap: 10px; height: 30px; padding: 0 12px; border: 1px solid var(--c); color: var(--c); font-family: var(--mono); font-size: 12px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; white-space: nowrap; text-decoration: none; }
.badge::before { content: ""; width: 8px; height: 8px; background: var(--c); }
.badge--historical { --c: var(--sky); }
.badge--speculative { --c: var(--orange); }
.badge--practical { --c: var(--green); }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 28px; border: 1px solid var(--orange); border-radius: 2px; background: var(--orange); color: var(--bg); font-family: var(--mono); font-size: 13px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; text-decoration: none; white-space: nowrap; cursor: pointer; }
.btn:hover { background: #f2b529; border-color: #f2b529; color: var(--bg); }
.btn--secondary { background: transparent; border-color: var(--sky); color: var(--sky); }
.btn--secondary:hover { background: rgba(86, 180, 233, 0.12); border-color: var(--sky); color: var(--sky); }
.btn--sm { min-height: 44px; }

.arrow { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; font-family: var(--mono); font-size: 13px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--sky); text-decoration: none; }
.arrow span { border-bottom: 1px solid currentColor; padding-bottom: 3px; }
.arrow svg { flex-shrink: 0; }
.arrow--orange { color: var(--orange); }
.arrow--orange:hover { color: #f2b529; }
.arrow--vermillion { color: var(--vermillion); }
.arrow--vermillion:hover { color: #f07a2a; }

/* ---- layout */
.inner { max-width: 1440px; margin: 0 auto; padding-left: var(--pad); padding-right: var(--pad); }
.row { border-top: 1px solid var(--line); }
.row--panel { background: var(--panel); }
.row > .inner { display: flex; gap: 48px; padding-top: 96px; padding-bottom: 96px; }
.row--tight > .inner { padding-top: 88px; padding-bottom: 88px; }
.row--tighter > .inner { padding-top: 80px; padding-bottom: 80px; }
.row__rail { width: var(--rail); flex-shrink: 0; }
.row__h { font-size: inherit; font-weight: inherit; line-height: inherit; }
.row__body { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.stack { display: flex; flex-direction: column; min-width: 0; }
.cluster { display: flex; flex-wrap: wrap; align-items: center; gap: 28px; }
.cluster--tight { gap: 16px; }
.between { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.grid { display: grid; gap: 40px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px; }
.g8 { margin-top: 8px; } .g12 { margin-top: 12px; } .g16 { margin-top: 16px; } .g20 { margin-top: 20px; }
.g24 { margin-top: 24px; } .g28 { margin-top: 28px; } .g32 { margin-top: 32px; } .g36 { margin-top: 36px; }
.g40 { margin-top: 40px; } .g48 { margin-top: 48px; }

/* ---- header */
.site-header { border-bottom: 1px solid var(--line); background: var(--bg); }
.site-header .inner { height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 14px; text-decoration: none; min-height: 44px; flex-shrink: 0; }
.brand img { width: 40px; height: 40px; }
.brand span { font-family: var(--serif); font-size: 15px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--fg); white-space: nowrap; }
.nav { display: flex; align-items: center; gap: 36px; }
.nav a:not(.btn) { display: flex; align-items: center; height: 44px; border-top: 2px solid transparent; border-bottom: 2px solid transparent; font-family: var(--mono); font-size: 13px; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; text-decoration: none; color: var(--body); }
.nav a:not(.btn):hover { color: var(--fg); }
.nav a[aria-current="page"] { color: var(--fg); border-bottom-color: var(--sky); }
.nav-toggle { display: none; flex-shrink: 0; width: 44px; height: 44px; padding: 0; background: transparent; border: 0; color: var(--fg); align-items: center; justify-content: center; cursor: pointer; }

/* ---- hero: the channel banner, then the title plate */
.band { position: relative; height: clamp(160px, 20.84vw, 300px); display: flex; align-items: center; justify-content: center; overflow: hidden; background: #050508 center / cover no-repeat; }
.band::before { content: ""; position: absolute; inset: 0; background: rgba(14, 17, 22, 0.34); }
.band img { position: relative; width: clamp(128px, 16.4vw, 236px); height: auto; aspect-ratio: 1; }
.plate-block { display: flex; flex-direction: column; align-items: center; text-align: center; padding: 56px var(--pad) 96px; }
.plate-block .kicker { font-size: 14px; }

/* The video title card, drawn in CSS: mark, wordmark, hairline, the job, serial. */
.card { container-type: inline-size; position: relative; width: 100%; aspect-ratio: 16 / 9; background: var(--plate); border: 1px solid var(--line); color: var(--fg); overflow: hidden; }
/* Each cqw value has a plain fallback first, for browsers without container-query units. */
.card__in { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; gap: 1.46cqw; text-align: center; }
.card__in img { width: 56px; height: 56px; width: 15.6cqw; height: 15.6cqw; }
.card__word, .card__serial { font-family: var(--serif); font-weight: 700; text-transform: uppercase; color: var(--sky); line-height: 1.2; }
.card__word { font-size: 9px; font-size: max(9px, 1.98cqw); letter-spacing: 0.14em; }
.card__serial { font-size: 9px; font-size: max(9px, 2.08cqw); letter-spacing: 0.1em; }
.card__rule { width: 31%; height: 1px; width: 31.25cqw; height: max(1px, 0.21cqw); background: var(--sky); }
.card__title { font-size: clamp(15px, 4.4vw, 27px); font-size: 5.2cqw; line-height: 1.15; padding: 0 12px; padding: 0 4.2cqw; }
.card--dim .card__in { opacity: 0.72; }
.card--next .card__title { color: var(--orange); }
.card__play { position: absolute; right: max(16px, 3.3cqw); bottom: max(16px, 3.3cqw); width: 56px; height: 56px; border-radius: 50%; border: 0; background: var(--orange); display: flex; align-items: center; justify-content: center; cursor: pointer; }
.card__play:hover { background: #f2b529; }
.card iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* ---- home */
.arc-col .rule { background: var(--arc-c); }
.latest { display: flex; gap: 48px; align-items: flex-start; }
.latest__card { width: min(520px, 55%); flex-shrink: 0; }
.next__title { font-size: clamp(20px, 1.95vw, 28px); line-height: 1.25; color: var(--orange); }
.author { display: flex; gap: 48px; align-items: flex-start; }
.portrait { flex-shrink: 0; width: 200px; height: auto; aspect-ratio: 4 / 5; object-fit: cover; }
.portrait--lg { width: min(400px, 36%); }
.name { font-size: 20px; line-height: 1.3; color: var(--fg); }

/* ---- episodes */
.page-head { padding: 96px var(--pad) 64px; max-width: 1440px; margin: 0 auto; }
.filter { border-top: 1px solid var(--line); }
.filter .inner { min-height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.filter__chips { display: flex; flex-wrap: wrap; gap: 4px 32px; }
.chip { display: flex; align-items: center; justify-content: center; gap: 10px; min-width: 44px; height: 44px; padding: 0; background: transparent; border: 0; border-top: 2px solid transparent; border-bottom: 2px solid transparent; font-family: var(--mono); font-size: 13px; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase; color: var(--body); cursor: pointer; }
.chip:hover { color: var(--fg); }
.chip[aria-pressed="true"] { color: var(--fg); border-bottom-color: var(--sky); }
.chip i { width: 8px; height: 8px; background: var(--c); }
.ep-row { border-top: 1px solid var(--line); }
.ep-row .inner { display: flex; gap: 56px; align-items: flex-start; padding-top: 56px; padding-bottom: 56px; }
.ep-row__card { width: min(400px, 42%); flex-shrink: 0; }
.ep-row[hidden] { display: none; }
.empty { padding: 56px var(--pad); max-width: 1440px; margin: 0 auto; }
/* The filter block ships with the hidden attribute; site.js reveals it. */
.filter[hidden] { display: none; }
.filter--multi .inner { padding-top: 12px; padding-bottom: 12px; gap: 4px 48px; justify-content: flex-start; }
.filter--multi [role=status] { margin-left: auto; }

/* ---- history */
.timeline { list-style: none; padding: 0; }
.tl { display: block; padding: 40px 0; border-top: 1px solid var(--line); scroll-margin-top: 24px; }
.tl:first-child { padding-top: 0; border-top: 0; }
.tl[hidden] { display: none; }
.tl article { display: flow-root; max-width: 760px; }
.tl article > * + :not(button) { margin-top: 10px; }
.tl__date, .tl__title a:hover { color: var(--sky); }
.tl__date abbr { text-decoration: none; }
.tl__title a { color: inherit; text-decoration: none; }
.tl__summary, .tl__people { color: var(--body); }
.tl__figure { float: right; width: 160px; margin: 0 0 10px 1rem; }
.tl__sources { padding-left: 20px; display: flex; flex-direction: column; gap: 6px; font-size: 16px; line-height: 1.55; overflow-wrap: anywhere; }
.tl__sources cite, .tl-card__source cite { color: var(--fg); }
.tl__sources .mono, .tl__checked { font-size: 12px; }
.tl__read { font-size: clamp(17px, 1.32vw, 19px); }
.tl-years { display: none; }

/* The era axis over the timeline, and the phone fold of its filter chips. site.js builds both, so none of this
 * applies without JavaScript. --hit is the marker's hit area, which site.js reads; site.js sets --lanes. */
.tl-axis { --hit: 24px; border-top: 1px solid var(--line); }
.tl-axis .inner { position: relative; padding-top: 16px; padding-bottom: 16px; }
.tl-axis [hidden], .tl-axis__filter { display: none; }
.tl-axis__bands { display: flex; }
.tl-axis__band { flex: 1 1 0; min-width: 0; min-height: 44px; padding: 4px 8px; background: rgba(86, 180, 233, 0.07); border: 0; border-bottom: 2px solid transparent; color: var(--body); font: 12px/1.35 var(--mono); text-align: left; cursor: pointer; }
.tl-axis__zone { position: absolute; top: 0; height: calc(var(--lanes) * var(--hit)); background: rgba(86, 180, 233, 0.07); }
.tl-axis__band:nth-child(even), .tl-axis__zone--alt { background: rgba(86, 180, 233, 0.14); }
.tl-axis__band:hover, .tl-axis__band[aria-pressed="true"] { color: var(--fg); }
.tl-axis__band[aria-pressed="true"] { border-bottom-color: var(--sky); }
.tl-axis__label, .tl-axis__full { display: block; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; }
.tl-axis__full { flex: none; padding: 4px 16px; }
.tl-axis__years, .tl-axis__count { color: var(--muted); }
.tl-axis__count::before { content: " \00b7\0020"; }
.tl-axis__scroll { overflow-x: auto; overscroll-behavior-x: contain; }
.tl-axis__track { position: relative; min-width: 100%; height: calc(var(--lanes) * var(--hit) + 26px); }
.tl-axis__tick { position: absolute; top: calc(var(--lanes) * var(--hit)); padding-top: 8px; transform: translateX(-50%); font: 11px/1 var(--mono); color: var(--muted); }
.tl-axis__tick::before { content: ""; position: absolute; left: 50%; top: 0; width: 1px; height: 5px; background: var(--field); }
.tl-axis__dot { position: absolute; z-index: 1; display: flex; align-items: center; justify-content: center; width: var(--hit); height: var(--hit); margin-left: calc(var(--hit) / -2); padding: 0; background: none; border: 0; color: var(--sky); cursor: pointer; -webkit-tap-highlight-color: transparent; }
.tl-axis__dot::before { content: ""; width: 10px; height: 10px; border: 2px solid currentColor; border-radius: 50%; background: currentColor; }
.tl-axis__dot:hover, .tl-axis__dot:focus-visible, .tl-axis__dot[aria-current] { color: var(--fg); outline-offset: -2px; }
.tl-axis__dot[aria-current]::before { width: 14px; height: 14px; background: var(--bg); }
.tl-axis__dot::after { content: ""; position: absolute; inset: 0; translate: var(--off); }
.tl-axis__more { width: auto; min-width: var(--hit); padding: 0 6px; border: 1px solid currentColor; border-radius: 12px; font: 11px var(--mono); }
.tl-axis__more::before { content: none; }
.tl-axis__tip { position: absolute; z-index: 2; max-width: min(320px, 80%); padding: 8px 12px; background: var(--panel); border: 1px solid var(--line); border-left: 2px solid var(--sky); color: var(--fg); font: 15px/1.4 var(--serif); pointer-events: none; }
.tl-axis__tip::after, .tl-card::before { content: ""; position: absolute; left: var(--x); top: 100%; margin-left: -6px; border: 6px solid transparent; border-top-color: var(--sky); }
.tl-axis__tip b { display: block; color: var(--sky); font: 12px var(--mono); }
.tl--current > article { max-width: 778px; margin-left: -18px; padding-left: 16px; border-left: 2px solid var(--sky); }
/* The preview card: under the track, centred on its dot; no animation, it simply appears. */
.tl-card { position: absolute; z-index: 3; width: min(22rem, calc(100% - 16px)); padding: 12px 16px 16px; background: var(--panel); border: 1px solid var(--line); border-left: 3px solid var(--sky); }
.tl-axis__tip--below::after, .tl-card::before { top: auto; bottom: 100%; border-color: transparent transparent var(--sky); }
.tl-card--far::before { content: none; }
.tl-card__head { display: flow-root; }
.tl-card__date { color: var(--sky); font-size: 12px; }
.tl-card__close { float: right; min-width: 44px; min-height: 44px; margin: -12px -12px 0 8px; padding: 0 8px; background: none; border: 0; color: var(--body); font: 500 12px var(--mono); letter-spacing: 0.1em; text-transform: uppercase; cursor: pointer; }
.tl-card__close:hover, .tl-card__read:hover { color: var(--fg); }
.tl-card__title { margin-top: 4px; color: var(--fg); font: 600 18px/1.35 var(--serif); }
.tl-card__line { margin-top: 8px; color: var(--body); }
.tl-card__source { margin-top: 8px; font-size: 12px; overflow-wrap: anywhere; }
.tl-card__read { display: inline-flex; align-items: center; gap: 6px; min-height: 44px; margin-top: 4px; color: var(--sky); font: 500 13px var(--mono); letter-spacing: 0.1em; text-transform: uppercase; text-decoration: none; }
.tl__back { display: flex; width: 100%; margin-top: 26px; }
.tl article:has(> .tl__back) > .tl__figure { margin-bottom: 26px; }
@media (pointer: coarse) {
  .tl-axis { --hit: 44px; }
}
@media (max-width: 560px) {
  .tl-card { position: static; width: auto; margin-top: 8px; }
  .tl-card::before { content: none; }
  .tl-card__read { display: flex; }
  .tl-axis__filter { display: flex; }
  .tl-axis__filter[aria-expanded="true"] { color: var(--fg); border-bottom-color: var(--sky); }
  .tl-axis__filter[aria-expanded="false"] ~ .filter__chips { display: none; }
}
@media print, (max-width: 560px) {
  .tl-axis { display: none; }
}

/* ---- episode post */
.post-head { width: min(960px, 100% - 2 * var(--pad)); margin: 0 auto; padding: 56px 0 48px; display: flex; flex-direction: column; }
.post-video { width: min(960px, 100% - 2 * var(--pad)); margin: 0 auto 64px; }
.article { width: min(760px, 100% - 2 * var(--pad)); margin: 0 auto; }
.block { padding: 48px 0; border-top: 1px solid var(--line); overflow-wrap: anywhere; }
.block:last-child { padding-bottom: 64px; }
.block > h2 { font-family: var(--mono); font-size: 13px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--sky); line-height: 20px; margin-bottom: 20px; }
.block h3 { font-size: 22px; line-height: 1.3; font-weight: 600; color: var(--fg); margin: 28px 0 12px; }
.block p + p, .block p + ul, .block p + ol, .block ul + p, .block ol + p { margin-top: 16px; }
.block ul, .block ol { padding-left: 24px; display: flex; flex-direction: column; gap: 12px; }
.block li { padding-left: 6px; }
.block strong { color: var(--fg); font-weight: 600; }
.block code { font-family: var(--mono); font-size: 0.86em; color: var(--fg); background: var(--panel); border: 1px solid var(--line); padding: 1px 6px; }
.block pre { overflow-x: auto; padding: 20px 24px; background: var(--panel); border: 1px solid var(--line); font-family: var(--mono); font-size: 14px; line-height: 1.6; color: var(--fg); margin-top: 16px; }
.block pre code { background: none; border: 0; padding: 0; font-size: inherit; }
.block blockquote { padding-left: 20px; border-left: 2px solid var(--sky); color: var(--fg); margin-top: 16px; }
.ep-claims li, .ledger__row[id] { scroll-margin-top: 24px; }
.block .ledger__head, .block .ledger__row { grid-template-columns: minmax(0, 16fr) minmax(0, 32fr) minmax(0, 32fr) minmax(0, 20fr); column-gap: 16px; }
.block .ledger__row { font-size: 16px; }
.ledger__row div:first-child a { color: inherit; }
.vh { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.next-band { border-top: 1px solid var(--line); }
.next-band a { width: min(960px, 100% - 2 * var(--pad)); margin: 0 auto; padding: 64px 0; display: flex; align-items: center; justify-content: space-between; gap: 24px; text-decoration: none; }
.next-band__title { font-size: clamp(24px, 2.5vw, 36px); line-height: 1.2; color: var(--orange); }

/* ---- research, records, about */
.notice { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; }
.fcard { background: var(--panel); border: 1px solid var(--line); display: flex; flex-direction: column; }
.fcard__top { height: 2px; background: var(--c); }
.fcard__body { padding: 34px 36px 36px; display: flex; flex-direction: column; flex: 1; }
.fcard__body .arrow { margin-top: auto; padding-top: 24px; }
.trow { display: flex; align-items: baseline; gap: 32px; padding: 24px 0; border-top: 1px solid var(--line); text-decoration: none; color: inherit; }
.trow:last-of-type { border-bottom: 1px solid var(--line); }
.trow--center { align-items: center; }
.trow__n { width: 40px; flex-shrink: 0; font-family: var(--mono); font-size: 14px; font-weight: 600; color: var(--sky); }
.trow__name { width: 300px; flex-shrink: 0; font-size: 22px; font-weight: 600; line-height: 1.3; color: var(--fg); }
.trow__name--sm { width: 240px; }
.trow__badge { width: 200px; flex-shrink: 0; }
.trow__status { width: 220px; flex-shrink: 0; }
.trow__text { flex: 1; min-width: 0; font-size: clamp(16px, 1.25vw, 18px); line-height: 1.6; }
.trow__kind { width: 130px; flex-shrink: 0; text-align: right; font-family: var(--mono); font-size: 12px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--sky); }
a.trow:hover .trow__name { color: var(--sky); }
.start-steps { list-style: none; padding: 0; }
.start-steps .trow { align-items: flex-start; }
.claim { padding: 24px 28px; background: var(--panel); border: 1px solid var(--line); font-family: var(--mono); font-size: 15px; line-height: 24px; color: var(--fg); overflow-wrap: anywhere; }
.claim b { font-weight: 400; color: var(--orange); }
.claim i { font-style: normal; color: var(--muted); }
.legend__term { font-family: var(--mono); font-size: 13px; font-weight: 600; color: var(--orange); line-height: 20px; }
.legend p { font-size: 15.5px; line-height: 1.6; margin-top: 8px; }
.ledger__head { display: grid; grid-template-columns: 16% 32% 32% 20%; padding: 14px 0; border-bottom: 1px solid var(--line); }
.ledger__head div { font-family: var(--mono); font-size: 12px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); line-height: 20px; }
.ledger__row { display: grid; grid-template-columns: 16% 32% 32% 20%; padding: 20px 0; border-bottom: 1px solid var(--line); font-size: 17px; line-height: 1.55; }
.ledger__row div:first-child { font-family: var(--mono); font-size: 14px; color: var(--orange); }
.ledger__empty { padding: 32px 0; border-bottom: 1px solid var(--line); color: var(--fg); }
.about-head { display: flex; gap: 72px; align-items: flex-start; padding: 96px var(--pad); max-width: 1440px; margin: 0 auto; }
.contact { display: flex; gap: 56px; align-items: flex-start; }
.contact__lead { width: 360px; flex-shrink: 0; }

/* ---- subscribe, footer */
.field { display: flex; flex-direction: column; gap: 8px; }
.field label { font-family: var(--mono); font-size: 12px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.field input { width: min(380px, 100%); height: 52px; padding: 0 16px; background: var(--bg); border: 1px solid var(--field); border-radius: 2px; color: var(--fg); font-family: var(--serif); font-size: 17px; }
.subscribe-form { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px; }
.site-footer { border-top: 1px solid var(--line); }
.site-footer .inner { padding-top: 80px; padding-bottom: 56px; display: flex; flex-direction: column; gap: 40px; }
.footer__plate { display: flex; align-items: center; gap: 36px; }
.footer__plate img { width: 104px; height: 104px; flex-shrink: 0; }
.footer__title { font-size: clamp(26px, 2.2vw, 32px); line-height: 1.2; color: var(--fg); }
.footer__tag { font-style: italic; font-size: clamp(17px, 1.32vw, 19px); line-height: 1.5; margin-top: 8px; }
.footer__col a { display: block; margin-top: 8px; font-size: 16px; line-height: 1.5; color: var(--body); text-decoration: none; overflow-wrap: anywhere; }
.footer__col a:hover { color: var(--fg); }
.footer__legal { display: flex; flex-wrap: wrap; gap: 8px 40px; padding-top: 8px; }
.footer__legal .mono { font-size: 12px; }

/* ---- 404 */
.lost { min-height: 60vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 96px var(--pad); }

/* ---- narrower screens */
@media (max-width: 1080px) {
  .row > .inner { flex-direction: column; gap: 20px; padding-top: 72px; padding-bottom: 72px; }
  .row__rail { width: auto; }
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .trow__name, .trow__name--sm { width: 220px; }
  .trow__status { width: 170px; }
  .contact { flex-direction: column; }
  .contact__lead { width: auto; }
}
@media (max-width: 1180px) {
  .nav-toggle { display: flex; }
  .footer__legal a { padding: 11px 8px; margin: -11px -8px; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 64px; z-index: 40; flex-direction: column; align-items: stretch; gap: 0; padding: 8px var(--pad) 24px; background: var(--bg); border-bottom: 1px solid var(--line); }
  .nav.is-open { display: flex; }
  .nav a:not(.btn) { height: 52px; border-bottom: 1px solid var(--line); border-top: 0; }
  .nav a[aria-current="page"] { border-bottom-color: var(--sky); }
  .nav .btn { margin-top: 16px; }
  .site-header { position: relative; }
  .site-header .inner { height: 64px; padding-right: 10px; }
  .brand img { width: 32px; height: 32px; }
  .brand span { font-size: 12px; letter-spacing: 0.14em; }
}
@media (max-width: 860px) {
  .grid--3, .grid--2 { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .latest, .author, .about-head { flex-direction: column; }
  .latest__card, .ep-row__card { width: 100%; }
  .portrait--lg { width: min(400px, 100%); }
  .about-head { gap: 32px; padding-top: 56px; padding-bottom: 56px; }
  .ep-row .inner { flex-direction: column; gap: 20px; padding-top: 40px; padding-bottom: 40px; }
  .plate-block { padding: 32px var(--pad) 56px; }
  .plate-block .kicker { font-size: 12px; }
  .page-head { padding: 56px var(--pad) 40px; }
  .trow { flex-direction: column; gap: 8px; align-items: flex-start; }
  .trow__name, .trow__name--sm, .trow__badge, .trow__status, .trow__kind { width: auto; text-align: left; }
  .ledger__head { display: none; }
  .ledger__row { grid-template-columns: minmax(0, 1fr); gap: 6px; }
  .block .ledger__row { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  /* With the column heads hidden, each episode-ledger cell shows its own label. */
  .block .ledger__row .vh { position: static; display: block; width: auto; height: auto; margin: 0; overflow: visible; clip: auto; white-space: normal;
    font-family: var(--mono); font-size: 12px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); line-height: 20px; }
  .footer__plate { flex-direction: column; align-items: flex-start; gap: 20px; }
  .footer__plate img { width: 72px; height: 72px; }
  .next-band a { flex-direction: column; align-items: flex-start; padding: 48px 0; }
}
@media (max-width: 560px) {
  .tl__figure { float: none; margin: 0; }
  .tl article:has(> .tl__back) > .tl__figure { margin-bottom: 0; }
  .tl-years { display: grid; grid-template-columns: repeat(4, 1fr); padding: 8px var(--pad); border-top: 1px solid var(--line); }
  .tl-years a { display: flex; align-items: center; justify-content: center; min-height: 44px; font: 500 13px var(--mono); letter-spacing: 0.1em; }
  .row > .inner, .row--tight > .inner, .row--tighter > .inner { padding-top: 56px; padding-bottom: 56px; }
  .grid--4 { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .cluster--stack { flex-direction: column; align-items: stretch; gap: 12px; }
  .cluster--stack .btn { width: 100%; }
  .plate-block .cluster--stack { width: 100%; }
  .plate-block .arrow { align-self: center; }
  .subscribe-form, .subscribe-form .field, .subscribe-form .field input, .subscribe-form .btn { width: 100%; }
  .fcard__body { padding: 28px 24px; }
  .block { padding: 40px 0; }
}
@media (max-width: 360px) {
  .site-header .inner { gap: 12px; }
  .brand { gap: 10px; }
  .brand span { letter-spacing: 0.08em; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}
@media print {
  :root { --bg: #fff; --panel: #fff; --plate: #fff; --fg: #000; --body: #111; --muted: #444; --line: #bbb; --sky: #0b5a85; --orange: #7a5200; --green: #00664a; --vermillion: #9a4300; }
  .site-header, .site-footer, .band, .nav-toggle, .card__play, .filter, .tl__back, body[data-arc]::before { display: none; }
  .btn { background: transparent; color: var(--orange); }
  .card--dim .card__in { opacity: 1; }
}