@charset "UTF-8";

:root {
  color-scheme: light;
  --paper: #f2efe5;
  --surface: #fcfaf3;
  --warm: #e7e5d8;
  --ink: #263c30;
  --muted: #59634f;
  --olive: #596747;
  --forest: #263c30;
  --line: #263c3038;
  --mark: #d9e0bc;
  --mark-ink: #263c30;
  --button: #263c30;
  --button-ink: #f2efe5;
  --focus: #906318;
  --inverse: #f2efe5;
  --inverse-muted: #c2cbb5;
  --inverse-line: #c2cbb53d;
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, Baskerville, Georgia, serif;
  --sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: ui-monospace, "Cascadia Code", "Liberation Mono", monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --paper: #18251e; --surface: #202f26; --warm: #2b3c2d; --ink: #f2efe5;
    --muted: #bec8b3; --olive: #bfcca5; --line: #c2cbb53d;
    --mark: #bdcda0; --button: #cedbb3; --button-ink: #203126; --focus: #edc783;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #18251e; --surface: #202f26; --warm: #2b3c2d; --ink: #f2efe5;
  --muted: #bec8b3; --olive: #bfcca5; --line: #c2cbb53d;
  --mark: #bdcda0; --button: #cedbb3; --button-ink: #203126; --focus: #edc783;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 28px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.65 var(--sans); -webkit-font-smoothing: antialiased; }
::selection { background: var(--mark); color: var(--mark-ink); }
[hidden] { display: none !important; }
a { color: inherit; text-underline-offset: .22em; text-decoration-thickness: 1px; }
a, button, summary, input { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }
button, input { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: default; opacity: .55; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 5px; }
:target { scroll-margin-top: 28px; }
main:focus { outline: none; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { font-weight: 400; }
h1, h2 { font-family: var(--serif); text-wrap: balance; }
h1 { font-size: clamp(48px, 6.5vw, 96px); line-height: 1.05; letter-spacing: -.055em; }
h2 { font-size: clamp(36px, 4vw, 58px); line-height: 1.1; letter-spacing: -.045em; }
h3 { font-family: var(--serif); font-size: 28px; line-height: 1.2; letter-spacing: -.025em; }
em { font-weight: inherit; }
h1 em, h2 em { color: var(--olive); }
svg { display: block; flex-shrink: 0; }
img, video { max-width: 100%; }
strong { font-weight: 600; }
.shell { width: min(1320px, calc(100% - 112px)); margin-inline: auto; }
.eyebrow { font-size: 13px; font-weight: 600; line-height: 1.5; text-transform: uppercase; letter-spacing: .1em; }
.fine-print, .muted { color: var(--muted); }
.fine-print { font-size: 14px; line-height: 1.6; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: 12px; left: 16px; z-index: 30; clip-path: inset(50%); transform: translateY(-180%); background: var(--surface); padding: 12px 20px; }
.skip-link:focus { clip-path: none; transform: none; }
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 98px; border-bottom: 1px solid var(--line); }
.wordmark { display: inline-flex; align-items: center; min-height: 44px; gap: 10px; font-size: 31px; font-weight: 650; letter-spacing: -.065em; text-decoration: none; line-height: 1; }
.wordmark > span { color: var(--olive); margin-left: -9px; }
.brand-mark { width: 29px; height: 32px; stroke: var(--olive); stroke-width: 1.8; }
.site-header nav, .site-footer nav { display: flex; align-items: center; flex-wrap: wrap; gap: 10px 32px; font-size: 14px; }
.site-header nav a, .site-footer nav a { display: inline-flex; align-items: center; gap: 9px; min-height: 44px; text-decoration: none; }
.site-header nav a:hover, .site-footer nav a:hover { text-decoration: underline; }
.nav-setup { border-bottom: 1px solid var(--olive); }
.hero { padding-top: 44px; padding-bottom: 30px; }
.hero-kicker { display: flex; align-items: center; justify-content: space-between; gap: 16px; color: var(--muted); }
.hero-kicker .eyebrow { display: flex; align-items: center; gap: 10px; }
.status-dot { width: 6px; height: 6px; background: var(--olive); border-radius: 50%; flex: 0 0 auto; }
.edition { font: 13px/1.5 var(--mono); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.9fr) minmax(285px, .85fr); align-items: end; gap: 36px; margin-block: 35px 45px; }
.hero h1 { animation: enter .8s both; }
.selection-accent { position: relative; display: inline-block; white-space: nowrap; }
.selection-accent::after { content: ""; position: absolute; left: 0; right: 0; bottom: -.035em; height: 2px; background: var(--olive); transform-origin: left; animation: select-line 1s .3s both; }
.selection-accent::before { content: ""; position: absolute; right: -.045em; bottom: -.09em; width: 1px; height: .32em; background: var(--olive); animation: enter .5s .9s both; }
.hero-copy { padding-bottom: 4px; animation: enter .8s .12s both; }
.hero-copy > p:first-child { max-width: 37ch; font-size: 17px; line-height: 1.7; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 22px; margin-block: 24px 17px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 14px; min-height: 48px; padding: 12px 20px; border: 1px solid transparent; border-radius: 3px; text-decoration: none; font: 600 14px/1.5 var(--sans); transition: transform .18s ease, box-shadow .18s ease; }
.button:hover { transform: translateY(-2px); box-shadow: 0 5px 0 -2px var(--line); }
.button:active { transform: translateY(0); }
.button svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.5; }
.primary { background: var(--button); color: var(--button-ink); }
.secondary { color: var(--ink); border-color: var(--line); background: transparent; }
.text-link { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; font-size: 14px; font-weight: 600; text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.hero-baseline { display: flex; align-items: center; justify-content: space-between; gap: 25px; font-size: 13px; color: var(--muted); }
.hero-baseline svg { width: 180px; height: 22px; stroke: var(--olive); stroke-width: 1; }

/* The stage stays forest in either theme; its contrast never cross-fades. */
.stage { background: var(--forest); color: var(--inverse); padding: 32px 36px 0; border-radius: 5px; }
.stage :focus-visible { outline-color: #edc783; }
.stage .demo-layout :focus-visible { outline-color: var(--focus); }
.stage-header { display: flex; justify-content: space-between; align-items: end; gap: 24px; padding-bottom: 28px; }
.stage-header .eyebrow { color: var(--inverse-muted); margin-bottom: 10px; }
.stage h2 { font-size: clamp(30px, 3vw, 42px); }
.stage h2 em { color: var(--inverse-muted); }
.stage-modes { display: flex; flex-wrap: wrap; gap: 4px; padding: 4px; border: 1px solid var(--inverse-line); border-radius: 3px; }
.stage-modes button { min-height: 44px; padding: 9px 14px; border: 0; border-radius: 2px; background: transparent; color: var(--inverse-muted); font-size: 14px; transition: transform .18s ease; }
.stage-modes button:hover { text-decoration: underline; }
.stage-modes button[aria-selected="true"] { background: #f2efe5; color: #263c30; }
.media-shell { position: relative; isolation: isolate; width: 100%; aspect-ratio: 16 / 10; background: #1b2c22; border: 1px solid #c2cbb52e; border-radius: 3px; overflow: hidden; color: #f2efe5; color-scheme: dark; }
.media-shell video { position: relative; z-index: 2; display: block; width: 100%; height: 100%; aspect-ratio: 16 / 10; object-fit: contain; background: transparent; }
.hero-media, .hero-media video { aspect-ratio: 16 / 9; }
.media-placeholder { position: absolute; z-index: 1; inset: 0 0 55px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; padding: 20px; text-align: center; pointer-events: none; background: #1b2c22; }
.media-pending .media-placeholder { z-index: 3; }
.hero-placeholder { background: radial-gradient(ellipse at 50% 60%, #304936 0%, #1b2c22 72%); gap: 20px; }
.reading-symbol { width: clamp(90px, 12vw, 180px); height: auto; stroke: #bcc9a6; stroke-width: 1.25; }
.symbol-selection { stroke: #e0e8c7; }
.placeholder-title { font-family: var(--serif); font-size: clamp(28px, 4.4vw, 62px); line-height: 1.08; letter-spacing: -.035em; }
.placeholder-title em { color: #c2cbb5; }
.placeholder-note { color: #c2cbb5; font-size: 14px; line-height: 1.6; }
.walkthrough-figure figcaption { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 24px; padding-top: 17px; font-size: 14px; color: var(--inverse-muted); }
.caption-index { margin-right: 12px; font: 13px var(--mono); }
.media-status { min-height: 1.6em; font-size: 14px; margin-top: 12px; }
.media-status:empty { display: none; }
.stage .media-status { color: var(--inverse-muted); }
.media-notes { margin-top: 8px; max-width: 850px; }
summary { cursor: pointer; padding-block: 12px; min-height: 44px; font-size: 14px; font-weight: 600; }
summary:hover { text-decoration: underline; text-underline-offset: 4px; }
summary::marker { color: var(--olive); }
.stage summary::marker { color: var(--inverse-muted); }
.disclosure-body { padding: 4px 0 20px; }
.disclosure-body > * + *, .transcript-pending + ol { margin-top: 14px; }
.disclosure-body p, .disclosure-body li { font-size: 14px; line-height: 1.75; }
.disclosure-body ol, .disclosure-body ul { padding-left: 22px; }
.disclosure-body h3 { font-size: 24px; margin-top: 22px; }
.transcript-pending { color: var(--muted); font-size: 14px; }
.stage .disclosure-body, .stage .transcript-pending { color: var(--inverse-muted); }
.stage-footer { display: flex; align-items: center; justify-content: space-between; gap: 20px; border-top: 1px solid var(--inverse-line); margin-top: 16px; padding-block: 15px; }
.stage-footer > span { font: italic 21px/1.3 var(--serif); color: var(--inverse-muted); }
.stage-footer a { display: inline-flex; align-items: center; gap: 20px; min-height: 44px; font-size: 14px; text-decoration: none; }
.stage-footer a:hover { text-decoration: underline; }
.stage-noscript { font-size: 14px; padding-top: 15px; color: var(--inverse-muted); }

.preview-banner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px 16px; padding: 14px 20px; background: #354b39; font-size: 13px; color: var(--inverse); }
.preview-banner .eyebrow { font-size: 13px; }
.demo-layout { display: grid; grid-template-columns: minmax(0, 1.8fr) minmax(250px, 1fr); background: var(--surface); color: var(--ink); border-radius: 0 0 3px 3px; }
.demo-article { padding: clamp(24px, 4vw, 52px); }
.demo-article > .eyebrow { color: var(--muted); font-size: 13px; letter-spacing: .06em; }
.demo-article h3 { font-size: clamp(32px, 3.5vw, 46px); line-height: 1.1; margin-block: 20px 24px; max-width: 14ch; }
.passage { font-family: var(--serif); font-size: 19px; line-height: 1.85; }
.passage p + p { margin-top: 16px; }
.passage .word { border-radius: 2px; }
.passage .word.active { color: var(--mark-ink); background: var(--mark); box-shadow: 3px 0 0 var(--mark), -3px 0 0 var(--mark); }
.sample-credit { font-size: 13px; color: var(--muted); padding-top: 28px; }
.demo-controls { align-self: stretch; padding: 32px 26px; border-left: 1px solid var(--line); display: flex; flex-direction: column; background: var(--paper); }
.control-label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 9px; }
.language-options { display: flex; gap: 7px; margin-bottom: 12px; }
.language-options button { flex: 1; min-height: 44px; border: 1px solid var(--line); border-radius: 2px; background: transparent; color: var(--ink); font-size: 14px; }
.language-options button[aria-pressed="true"] { background: var(--button); color: var(--button-ink); border-color: var(--button); }
.language-options button:hover { text-decoration: underline; }
.demo-position { display: flex; flex-direction: column; gap: 5px; padding-top: 36px; margin-top: auto; padding-bottom: 24px; }
.demo-position > :first-child { font-size: 16px; }
.demo-position > :last-child { font-size: 13px; color: var(--muted); }
#demo-progress { display: block; width: 100%; min-height: 44px; margin: 0; accent-color: var(--olive); cursor: pointer; }
.progress-labels { display: flex; justify-content: space-between; gap: 8px; font-size: 13px; color: var(--muted); }
.player-controls { display: flex; gap: 8px; padding-block: 22px 16px; }
.player-controls > .button { flex: 1; padding-inline: 10px; }
.icon-button { display: inline-grid; place-items: center; min-width: 48px; min-height: 48px; padding: 10px; border: 1px solid var(--line); border-radius: 3px; color: var(--ink); background: transparent; }
.icon-button svg { width: 22px; height: 22px; stroke: currentColor; stroke-width: 1.5; }
.demo-disclaimer { margin-top: 0; }

.how-section { padding-block: 82px 66px; }
.section-heading .eyebrow { color: var(--muted); margin-bottom: 20px; }
.section-heading h2 { font-size: clamp(34px, 3.6vw, 50px); }
.chapters { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 36px; list-style: none; padding: 0; margin: 35px 0 0; }
.chapter { position: relative; display: flex; flex-direction: column; height: 100%; padding-top: 20px; border-top: 1px solid var(--line); text-decoration: none; }
.chapter::before { content: ""; position: absolute; top: -2px; left: 0; width: 100%; height: 3px; background: var(--olive); transform: scaleX(0); transform-origin: left; transition: transform .35s ease; }
.chapter:hover::before, .chapter[aria-current="step"]::before { transform: scaleX(1); }
.chapter-top { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 20px; color: var(--olive); }
.chapter-number { font: 14px var(--mono); }
.chapter svg { width: 42px; height: 42px; stroke: currentColor; stroke-width: 1.25; }
.chapter h3 { margin-bottom: 12px; }
.chapter p { max-width: 35ch; color: var(--muted); font-size: 16px; }
.chapter-link { display: flex; align-items: center; gap: 12px; min-height: 44px; font-size: 14px; font-weight: 600; margin-top: 14px; }
.chapter-link > span { transition: transform .2s; }
.chapter:hover .chapter-link > span { transform: translate(3px, -3px); }
.chapter-feedback { margin-top: 20px; min-height: 1.6em; }
.setup-section { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px 100px; border-top: 1px solid var(--line); padding-top: 66px; padding-bottom: 52px; }
.setup-intro .eyebrow { color: var(--muted); margin-bottom: 20px; }
.setup-intro > p:not(.eyebrow) { max-width: 43ch; color: var(--muted); margin-block: 24px; }
.setup-reference { padding-top: 36px; }
.setup-reference h3 { font-size: 28px; }
.requirements { list-style: none; padding: 0; margin: 21px 0 10px; }
.requirements li { display: flex; align-items: baseline; gap: 20px; padding-block: 18px; border-top: 1px solid var(--line); }
.requirements li > span { font: 13px var(--mono); color: var(--olive); }
.requirements p { color: var(--muted); font-size: 14px; margin-top: 4px; }
.privacy-strip { grid-column: 1 / -1; display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: 24px; border-top: 1px solid var(--line); padding-top: 32px; }
.privacy-strip > svg { width: 35px; height: 42px; stroke: var(--olive); stroke-width: 1.2; margin-top: 5px; }
.privacy-strip h3 { font-size: 25px; }
.privacy-strip p { color: var(--muted); max-width: 94ch; margin-top: 10px; font-size: 14px; }
.privacy-strip details { max-width: 850px; }
.site-footer { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 18px 30px; border-top: 1px solid var(--line); padding-block: 28px 30px; }
.site-footer .wordmark { font-size: 27px; }
.site-footer p { color: var(--muted); font-size: 14px; margin-top: 7px; }
.footer-note { grid-column: 1 / -1; border-top: 1px solid var(--line); padding-top: 18px; margin-top: 10px; color: var(--muted); font: italic 18px var(--serif); }

/* The field guide: actions first, genuine captures alongside, detail on demand. */
.guide-hero { position: relative; padding-block: 52px 48px; border-bottom: 1px solid var(--line); }
.breadcrumb { display: flex; align-items: center; gap: 13px; font-size: 14px; color: var(--muted); margin-bottom: 32px; }
.breadcrumb a { display: inline-flex; align-items: center; min-height: 44px; }
.guide-hero-grid { display: grid; grid-template-columns: 1.5fr 1fr; align-items: end; gap: 70px; }
.guide-hero h1 { font-size: clamp(46px, 5.5vw, 78px); }
.guide-hero .eyebrow { margin-bottom: 20px; color: var(--muted); }
.guide-hero-copy p { max-width: 42ch; }
.guide-hero-copy .fine-print { margin-top: 16px; }
.guide-layout { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 56px; padding-top: 42px; }
.guide-nav { align-self: start; position: sticky; top: 28px; padding-bottom: 30px; }
.guide-nav .eyebrow { margin: 0 0 13px 12px; color: var(--muted); }
.guide-nav ol { list-style: none; margin: 0; padding: 0; }
.guide-nav a { display: flex; align-items: center; gap: 13px; min-height: 44px; padding: 10px 12px; border-left: 2px solid var(--line); font-size: 14px; text-decoration: none; }
.guide-nav a > span { color: var(--muted); font: 13px var(--mono); }
.guide-nav a:hover { text-decoration: underline; }
.guide-nav a[aria-current="location"] { border-left-color: var(--olive); background: var(--warm); }
.guide-nav > a { margin-top: 20px; border: 0; color: var(--muted); }
.guide-content { min-width: 0; }
.guide-step { padding-block: 32px 56px; border-bottom: 1px solid var(--line); }
.guide-step:first-child { padding-top: 0; }
.guide-step:last-child { border-bottom: 0; }
.step-heading { display: flex; align-items: baseline; gap: 20px; margin-bottom: 28px; }
.step-heading > span { font: 14px var(--mono); color: var(--olive); }
.step-heading h2 { font-size: clamp(32px, 3.2vw, 44px); }
.guide-step-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); align-items: start; gap: 32px; }
.action-list { margin: 0; padding-left: 23px; }
.action-list li { padding-left: 4px; }
.action-list li + li { margin-top: 12px; }
.action-list li::marker { color: var(--olive); font: 13px var(--mono); }
.action-list p { margin-top: 8px; }
.outcome { border-left: 2px solid var(--olive); padding: 3px 0 3px 15px; margin-top: 24px; font-size: 14px; color: var(--muted); }
.outcome strong { display: block; color: var(--ink); font-size: 13px; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 4px; }
.step-note { font-size: 14px; color: var(--muted); margin-top: 16px; }
.step-note a { display: inline-block; min-height: 44px; padding-top: 10px; }
.screenshot { min-width: 0; }
.screenshot-link { position: relative; display: block; isolation: isolate; aspect-ratio: 16 / 10; background: var(--warm); border: 1px solid var(--line); border-radius: 3px; overflow: hidden; text-decoration: none; }
.screenshot-link img { position: relative; z-index: 1; display: block; width: 100%; height: 100%; object-fit: contain; font-size: 13px; }
.screenshot-placeholder { position: absolute; z-index: 0; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; text-align: center; padding: 20px 24px 44px; color: var(--muted); font-size: 13px; }
.screenshot-placeholder svg { width: 44px; height: 44px; stroke: var(--olive); stroke-width: 1; }
.screenshot-placeholder strong { font: 24px/1.15 var(--serif); color: var(--ink); }
.screenshot-enlarge { position: absolute; right: 8px; bottom: 8px; z-index: 2; padding: 9px 12px; min-height: 40px; background: var(--paper); color: var(--ink); border: 1px solid var(--line); border-radius: 2px; font-size: 13px; }
.screenshot-link:hover .screenshot-enlarge { text-decoration: underline; }
.screenshot figcaption { color: var(--muted); font-size: 13px; line-height: 1.65; padding-top: 12px; }
.screenshot figcaption strong { color: var(--ink); }
.screenshot-feedback { font-size: 14px; margin-top: 10px; }
.screenshot-feedback:empty { display: none; }
.screenshot-pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-top: 28px; }
.setup-details { margin-top: 24px; border-block: 1px solid var(--line); }
.setup-details + .setup-details { margin-top: -1px; }
.setup-details .disclosure-body { padding-top: 8px; }
.copy-field { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; background: var(--warm); border: 1px solid var(--line); padding: 14px; border-radius: 3px; margin-top: 13px; }
code { font-family: var(--mono); font-size: .88em; overflow-wrap: anywhere; }
pre { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; min-width: 0; flex: 1 1 250px; }
.copy-button { min-height: 44px; min-width: 64px; padding: 9px 14px; border: 1px solid var(--line); border-radius: 2px; color: var(--ink); background: var(--surface); font-size: 14px; }
.copy-button:hover { text-decoration: underline; }
.copy-feedback { font-size: 14px; color: var(--muted); margin-top: 8px; min-height: 1.65em; }
.copy-feedback:empty { display: none; }
.host-list { list-style: none; margin: 12px 0; padding: 0; }
.host-list li { display: flex; flex-wrap: wrap; gap: 2px 12px; font-size: 14px; padding-block: 8px; border-bottom: 1px solid var(--line); }
.host-list span { color: var(--muted); }
.clip-details { margin-top: 26px; border: 1px solid var(--line); border-radius: 3px; }
.clip-details > summary { display: flex; align-items: center; justify-content: space-between; gap: 14px; list-style: none; padding: 16px 20px; }
.clip-details > summary::-webkit-details-marker { display: none; }
.clip-details > summary::after { content: "+"; font-size: 23px; font-weight: 400; }
.clip-details[open] > summary::after { content: "−"; }
.clip-summary-text { display: flex; flex-direction: column; gap: 3px; }
.clip-summary-text > span { font-size: 13px; color: var(--muted); font-weight: 400; }
.clip-content { padding: 0 20px 12px; }
.clip-content .media-placeholder { gap: 12px; }
.clip-content .placeholder-title { font-size: clamp(24px, 3vw, 40px); }
.clip-content figcaption { font-size: 14px; color: var(--muted); margin-top: 12px; }
.clip-content .media-notes { max-width: none; }
.controls-reference { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 30px; margin: 24px 0 0; }
.controls-reference > div { padding-block: 16px; border-top: 1px solid var(--line); }
.controls-reference dt { font-weight: 600; margin-bottom: 6px; }
.controls-reference dd { margin: 0; color: var(--muted); font-size: 14px; }
.troubleshooting-intro { margin-bottom: 22px; color: var(--muted); }
.faq-list details { border-top: 1px solid var(--line); }
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary { padding-block: 17px; font-size: 16px; }
.faq-list .disclosure-body { padding-left: 18px; max-width: 75ch; }
.boundaries { margin-top: 32px; padding: 26px; background: var(--warm); border-radius: 3px; }
.boundaries h3 { margin-bottom: 10px; }
.boundaries > p { color: var(--muted); font-size: 14px; }
.boundaries details { border-top: 1px solid var(--line); margin-top: 16px; }
.guide-closing { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 40px 64px; }
.guide-closing p { font: italic 28px/1.25 var(--serif); }
.image-dialog { width: min(1440px, calc(100% - 32px)); max-height: calc(100dvh - 32px); padding: 0; border: 1px solid var(--line); border-radius: 4px; background: var(--paper); color: var(--ink); overscroll-behavior: contain; }
.image-dialog::backdrop { background: #0b170fde; }
.dialog-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 12px 20px; border-bottom: 1px solid var(--line); }
.dialog-toolbar h2 { font: 600 16px/1.5 var(--sans); letter-spacing: 0; }
.dialog-toolbar button { flex-shrink: 0; }
.dialog-image-wrap { padding: 16px; }
.dialog-image-wrap img { display: block; margin: auto; width: auto; max-height: calc(100dvh - 235px); object-fit: contain; }
.dialog-image-wrap figcaption { font-size: 14px; color: var(--muted); padding: 14px 4px 0; }
.dialog-image-wrap a { display: inline-flex; align-items: center; min-height: 44px; }
body.dialog-open { overflow: hidden; }

/* Baseline content is always visible. A failed observer can never strand a section. */
.reveal-in { animation: enter .7s both; }
@keyframes enter { from { opacity: .01; transform: translateY(16px); } to { opacity: 1; transform: none; } }
@keyframes select-line { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@media (min-width: 1500px) {
  .hero { padding-top: 55px; }
  .hero-grid { margin-block: 45px 58px; }
  .hero-copy > p:first-child { font-size: 18px; }
}
@media (max-width: 1150px) {
  .shell { width: calc(100% - 64px); }
  .hero-grid { grid-template-columns: minmax(0, 1.7fr) minmax(275px, 1fr); gap: 28px; }
  h1 { font-size: clamp(52px, 6.3vw, 80px); }
  .hero-actions { gap: 4px 14px; }
  .stage { padding-inline: 26px; }
  .setup-section { column-gap: 60px; }
  .guide-layout { grid-template-columns: 165px minmax(0, 1fr); gap: 32px; }
  .guide-step-grid { grid-template-columns: 1fr; gap: 25px; }
  .guide-step-grid > .screenshot { max-width: 640px; width: 100%; }
  .guide-hero-grid { gap: 35px; }
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 30px; }
  .hero h1 { font-size: clamp(54px, 9vw, 80px); }
  .hero-copy { display: grid; grid-template-columns: 1.1fr 1fr; column-gap: 36px; }
  .hero-copy > p:first-child { grid-row: 1 / 3; }
  .hero-actions { margin-top: 0; margin-bottom: 10px; }
  .hero-baseline > span:last-child { display: none; }
  .stage-header { align-items: start; flex-direction: column; gap: 20px; }
  .stage-modes { align-self: stretch; }
  .stage-modes button { flex: 1; }
  .demo-layout { grid-template-columns: minmax(0, 1fr) 245px; }
  .demo-article { padding: 26px; }
  .demo-controls { padding: 26px 20px; }
  .passage { font-size: 18px; }
  .chapters { gap: 24px; }
  .chapter h3 { font-size: 25px; }
  .setup-section { gap: 35px; }
  .guide-hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .guide-hero-copy p { max-width: 65ch; }
  .guide-layout { grid-template-columns: 1fr; gap: 24px; padding-top: 25px; }
  .guide-nav { position: static; border-bottom: 1px solid var(--line); padding-bottom: 22px; }
  .guide-nav ol { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 3px 16px; }
  .guide-nav > a { margin-top: 8px; }
  .guide-step-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .guide-content { padding-top: 8px; }
  .guide-hero { padding-top: 25px; }
  .screenshot-pair { gap: 20px; }
}
@media (max-width: 640px) {
  .shell { width: calc(100% - 36px); }
  .site-header { min-height: 80px; gap: 16px; }
  .wordmark { font-size: 28px; gap: 7px; }
  .brand-mark { width: 24px; }
  .site-header nav { gap: 6px 16px; }
  .site-header .nav-how, .site-header .nav-setup { display: none; }
  .site-header nav a { font-size: 14px; }
  .hero { padding-top: 26px; padding-bottom: 22px; }
  .hero-kicker { align-items: start; flex-direction: column; gap: 8px; }
  .hero-kicker .eyebrow { font-size: 13px; letter-spacing: .045em; }
  .edition { padding-left: 16px; }
  .hero-grid { margin-block: 28px 30px; gap: 25px; }
  .hero h1 { font-size: clamp(42px, 9.5vw, 60px); line-height: 1.08; }
  .hero-copy { display: block; }
  .hero-copy > p:first-child { font-size: 16px; max-width: 42ch; }
  .hero-actions { gap: 7px 20px; margin-block: 20px 12px; }
  .button { padding-inline: 17px; }
  .hero-baseline { font-size: 13px; gap: 12px; }
  .hero-baseline svg { width: 75px; }
  .stage { padding: 24px 16px 0; }
  .stage-header { padding-bottom: 20px; }
  .stage-header .eyebrow { font-size: 13px; }
  .stage-modes { gap: 2px; padding: 3px; }
  .stage-modes button { font-size: 13px; padding-inline: 8px; }
  .hero-media, .hero-media video { aspect-ratio: 4 / 3; }
  .hero-placeholder { gap: 12px; padding: 14px; }
  .reading-symbol { width: 68px; height: 50px; }
  .placeholder-title { font-size: clamp(26px, 5.9vw, 37px); }
  .placeholder-note { font-size: 13px; line-height: 1.5; }
  .hero-placeholder .placeholder-note { max-width: 27ch; }
  .hero-placeholder .placeholder-note br { display: none; }
  .walkthrough-figure figcaption { gap: 6px; font-size: 13px; }
  .stage-footer { align-items: start; flex-direction: column; gap: 4px; padding-block: 20px 12px; }
  .stage-footer > span { font-size: 21px; }
  .media-status { font-size: 13px; }
  .preview-banner { padding: 14px 16px; }
  .demo-layout { grid-template-columns: 1fr; }
  .demo-article { padding: 24px 20px; }
  .demo-article > .eyebrow { letter-spacing: .025em; }
  .demo-article h3 { font-size: 36px; margin-block: 20px; }
  .passage { font-size: 18px; }
  .demo-controls { border-left: 0; border-top: 1px solid var(--line); padding: 24px 20px; }
  .demo-position { padding-block: 25px 15px; }
  .how-section { padding-block: 48px 40px; }
  .section-heading .eyebrow { margin-bottom: 16px; }
  .chapters { grid-template-columns: 1fr; gap: 24px; margin-top: 28px; }
  .chapter { display: grid; grid-template-columns: 40px minmax(0, 1fr); column-gap: 16px; padding-top: 20px; }
  .chapter-top { flex-direction: column; justify-content: start; gap: 22px; grid-row: 1 / 4; margin: 0; padding-top: 4px; }
  .chapter h3 { font-size: 27px; }
  .chapter p { max-width: none; }
  .chapter svg { width: 35px; height: 35px; }
  .chapter-link { margin-top: 9px; }
  .chapter-feedback { margin-top: 22px; font-size: 13px; }
  .setup-section { grid-template-columns: 1fr; padding-block: 43px 34px; gap: 32px; }
  .setup-intro > p:not(.eyebrow) { margin-block: 20px; }
  .setup-reference { padding-top: 0; }
  .privacy-strip { gap: 16px; grid-template-columns: 26px minmax(0, 1fr); }
  .privacy-strip > svg { width: 26px; height: 34px; }
  .privacy-strip h3 { font-size: 25px; }
  .site-footer { grid-template-columns: 1fr; gap: 14px; padding-block: 26px; }
  .site-footer nav { gap: 8px 22px; }
  .footer-note { margin-top: 3px; }
  .guide-hero { padding-bottom: 32px; }
  .breadcrumb { margin-bottom: 18px; }
  .guide-hero h1 { font-size: clamp(43px, 9.8vw, 62px); }
  .guide-hero-grid { gap: 24px; }
  .guide-nav ol { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 3px 8px; }
  .guide-nav a { font-size: 13px; padding-inline: 9px; gap: 8px; }
  .guide-nav .eyebrow { margin-left: 11px; }
  .guide-step { padding-block: 32px 38px; }
  .step-heading { gap: 14px; margin-bottom: 24px; }
  .step-heading h2 { font-size: 33px; }
  .guide-step-grid { grid-template-columns: 1fr; gap: 26px; }
  .screenshot-pair { grid-template-columns: 1fr; gap: 25px; }
  .screenshot-placeholder strong { font-size: 24px; }
  .screenshot-enlarge { min-height: 44px; }
  .controls-reference { grid-template-columns: 1fr; gap: 0; }
  .clip-details > summary { padding: 14px; }
  .clip-content { padding-inline: 12px; }
  .clip-content .media-shell, .clip-content video { aspect-ratio: 4 / 3; }
  .clip-content .placeholder-title { font-size: 26px; }
  .clip-content .placeholder-note { font-size: 13px; }
  .boundaries { padding: 20px; }
  .guide-closing { align-items: start; flex-direction: column; padding-block: 12px 40px; }
  .image-dialog { width: calc(100% - 20px); }
  .dialog-toolbar { gap: 12px; padding: 10px 14px; }
  .dialog-toolbar h2 { font-size: 14px; }
  .dialog-image-wrap { padding: 10px; }
}
@media (max-width: 380px) {
  .stage-modes { flex-direction: column; }
  .hero-media, .hero-media video { aspect-ratio: 1 / 1; }
  .hero-placeholder { gap: 10px; }
  .reading-symbol { width: 60px; height: 44px; }
  .hero-baseline svg { width: 45px; }
  .hero-kicker .eyebrow { font-size: 13px; letter-spacing: 0; }
  .guide-nav a { font-size: 13px; }
  .clip-content .media-shell, .clip-content video { aspect-ratio: 1 / 1; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .button:hover, .chapter:hover .chapter-link > span { transform: none; }
}
@media print {
  .site-header nav, .site-footer nav, .stage-modes, .demo-controls, .guide-nav, .copy-button, .screenshot-enlarge, .clip-details, .image-dialog { display: none !important; }
  .shell { width: 100%; }
  .guide-layout { display: block; }
  .guide-step { break-inside: avoid; }
  a { text-decoration: underline; }
}