/* Throne of Aura — The Open Playbook
   Palette from Product/Theme/aura-color-palette.md */
:root {
  --void: #141414;
  --carbon: #232324;
  --slate: #55565A;
  --fog: #C7C4BC;
  --ivory: #F5F2EA;
  --bone: #E7E2D6;
  --ice: #A9DCEC;
  --navy: #2E4A57;

  --bg: var(--ivory);
  --surface: #FBF9F4;
  --sunken: var(--bone);
  --ink: var(--void);
  --muted: #5d5e62;
  --rule: #d6d1c4;
  --rule-strong: var(--void);
  --link: var(--navy);
  --accent-bg: var(--ice);
  --accent-ink: var(--void);
  --code-bg: var(--void);
  --code-ink: var(--ivory);

  --display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --serif: "Archivo", "Helvetica Neue", Arial, sans-serif;  /* body text (name kept for history) */
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --side: 17rem;
  --measure: 40rem;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: var(--void);
    --surface: #1b1b1c;
    --sunken: var(--carbon);
    --ink: var(--ivory);
    --muted: #a9a69e;
    --rule: #34343a;
    --rule-strong: var(--ivory);
    --link: var(--ice);
    --accent-bg: var(--navy);
    --accent-ink: var(--ivory);
    --code-bg: #0c0c0c;
    --code-ink: var(--ivory);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: var(--void);
  --surface: #1b1b1c;
  --sunken: var(--carbon);
  --ink: var(--ivory);
  --muted: #a9a69e;
  --rule: #34343a;
  --rule-strong: var(--ivory);
  --link: var(--ice);
  --accent-bg: var(--navy);
  --accent-ink: var(--ivory);
  --code-bg: #0c0c0c;
  --code-ink: var(--ivory);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 5rem; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 1.02rem/1.62 var(--serif);
  font-stretch: 100%;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--link); text-underline-offset: .18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--link); outline-offset: 3px; }
h1, h2, h3, h4 { font-family: var(--display); font-stretch: 112%; line-height: 1.1; margin: 0; letter-spacing: -.01em; }
p { margin: 0 0 1em; }
.mono, .label { font-family: var(--mono); }
.label { font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }

.skip { position: absolute; left: -999px; top: 0; background: var(--ink); color: var(--bg); padding: .5rem 1rem; z-index: 50; }
.skip:focus { left: 1rem; top: 1rem; }

/* ---------- Top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; gap: 1rem;
  height: 3.5rem; padding: 0 1rem;
  background: var(--bg);
  border-bottom: 1px solid var(--rule-strong);
}
.wordmark { display: flex; align-items: baseline; gap: .6rem; color: var(--ink); text-decoration: none; min-width: 0; }
.wordmark b { font: 800 1rem/1 var(--display); font-stretch: 125%; letter-spacing: .14em; white-space: nowrap; }
.wordmark span { font: 500 .7rem/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); white-space: nowrap; }
.topbar nav { margin-left: auto; display: flex; gap: .25rem; align-items: center; }
.topbar nav a, .icon-btn {
  font: 500 .78rem/1 var(--mono); letter-spacing: .04em; text-transform: uppercase;
  color: var(--ink); text-decoration: none; padding: .55rem .7rem; border: 1px solid transparent;
  background: none; cursor: pointer;
}
.topbar nav a:hover, .icon-btn:hover { border-color: var(--rule-strong); }
.topbar nav a[aria-current="page"] { background: var(--accent-bg); color: var(--accent-ink); }
.menu-btn { display: none; }
@media (max-width: 999px) {
  .menu-btn { display: inline-flex; }
  .topbar nav .hide-sm { display: none; }
}
@media (max-width: 520px) { .wordmark span { display: none; } }

/* ---------- Layout ---------- */
.shell { display: grid; grid-template-columns: var(--side) minmax(0, 1fr); min-height: calc(100vh - 3.5rem); }
.toc {
  position: sticky; top: 3.5rem; align-self: start;
  height: calc(100vh - 3.5rem); overflow-y: auto;
  border-right: 1px solid var(--rule);
  padding: 1.5rem 1rem 2rem 1.25rem;
  font-family: var(--display);
}
.toc ol { list-style: none; margin: 0; padding: 0; }
.toc > ol > li { border-top: 1px solid var(--rule); }
.toc > ol > li:last-child { border-bottom: 1px solid var(--rule); }
.toc .ch {
  display: grid; grid-template-columns: 2.1rem 1fr; align-items: baseline;
  padding: .7rem .25rem; color: var(--ink); text-decoration: none; font-weight: 600; font-size: .95rem;
}
.toc .ch .n { font: 500 .75rem/1 var(--mono); color: var(--muted); }
.toc .ch:hover { background: var(--sunken); }
.toc li.current > .ch { background: var(--ink); color: var(--bg); }
.toc li.current > .ch .n { color: inherit; opacity: .65; }
.toc .sub { padding: .35rem 0 .7rem 2.35rem; }
.toc .sub a {
  display: block; padding: .28rem .5rem; margin-left: -.5rem;
  font: 400 .88rem/1.35 var(--display); color: var(--muted); text-decoration: none;
  border-left: 2px solid transparent;
}
.toc .sub a:hover { color: var(--ink); }
.toc .sub a.active { color: var(--ink); border-left-color: var(--link); font-weight: 600; }
.toc .home { display: block; margin-bottom: 1rem; color: var(--ink); font: 500 .75rem/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; text-decoration: none; }
.toc .home:hover { text-decoration: underline; }
.toc-foot { margin-top: 1.5rem; font: .8rem/1.5 var(--serif); color: var(--muted); }

@media (max-width: 999px) {
  .shell { grid-template-columns: 1fr; }
  .toc {
    position: fixed; top: 3.5rem; left: 0; right: 0; bottom: auto; z-index: 25;
    height: calc(100vh - 3.5rem); height: calc(100dvh - 3.5rem);
    overflow-y: auto; overscroll-behavior: contain; -webkit-overflow-scrolling: touch; touch-action: pan-y;
    background: var(--bg); border-right: 0;
    transform: translateY(-110%); visibility: hidden;
    transition: transform .2s ease, visibility .2s;
    padding: 1.25rem 1rem 3rem;
  }
  body.toc-open .toc { transform: none; visibility: visible; }
  body.toc-open { overflow: hidden; }
}

main { min-width: 0; padding: 0 clamp(1rem, 4vw, 3.5rem) 4rem; }
.wrap { max-width: 64rem; margin: 0 auto; }

/* ---------- Chapter header ---------- */
.chapter-head { padding: clamp(2rem, 6vw, 4.5rem) 0 2rem; border-bottom: 1px solid var(--rule-strong); margin-bottom: 2.5rem; }
.chapter-head .num {
  font: 800 clamp(4.5rem, 14vw, 9rem)/.8 var(--display); font-stretch: 125%;
  letter-spacing: -.04em; color: var(--ink); display: block; margin-bottom: 1rem;
  -webkit-text-stroke: 0;
}
.chapter-head h1 { font-size: clamp(2rem, 5vw, 3.25rem); font-weight: 750; }
.chapter-head .dek { font-size: 1.2rem; line-height: 1.5; max-width: var(--measure); margin: 1rem 0 0; color: var(--ink); }
.chapter-head .topics { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: 1.5rem; padding: 0; list-style: none; }
.chapter-head .topics a {
  display: inline-block; font: 500 .78rem/1 var(--mono); padding: .5rem .65rem;
  border: 1px solid var(--rule-strong); color: var(--ink); text-decoration: none;
}
.chapter-head .topics a:hover { background: var(--accent-bg); color: var(--accent-ink); }

/* ---------- Topic sections ---------- */
.topic { padding: 2.5rem 0 1rem; border-top: 1px solid var(--rule); }
.topic:first-of-type { border-top: 0; padding-top: 0; }
.topic-head { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem 1rem; margin-bottom: 1.25rem; }
.topic-head h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; }
.topic-head .idx { font: 500 .8rem/1 var(--mono); color: var(--muted); width: 100%; }
.prose { max-width: var(--measure); }
.prose h3 { font-size: 1.15rem; font-weight: 650; margin: 2rem 0 .6rem; }
.prose ul, .prose ol { padding-left: 1.25rem; margin: 0 0 1em; }
.prose li { margin-bottom: .35em; }
.prose strong { font-weight: 650; }

/* Source badges */
.badge {
  display: inline-flex; align-items: center; gap: .45rem;
  font: 500 .7rem/1 var(--mono); letter-spacing: .06em; text-transform: uppercase;
  padding: .42rem .55rem; border: 1px solid var(--rule-strong); white-space: nowrap;
}
.badge::before { content: ""; width: .55rem; height: .55rem; display: inline-block; }
.badge.creator { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.badge.creator::before { background: var(--ice); }
.badge.framework { background: var(--accent-bg); color: var(--accent-ink); border-color: transparent; }
.badge.framework::before { background: currentColor; border-radius: 50%; }
.badge.suggested { border-style: dashed; color: var(--muted); border-color: var(--muted); }
.badge.suggested::before { border: 1px dashed currentColor; }

/* Steps */
.steps { list-style: none; padding: 0; margin: 0 0 1.5rem; counter-reset: s; max-width: var(--measure); }
.steps > li { position: relative; padding: 0 0 1.25rem 3rem; counter-increment: s; }
.steps > li::before {
  content: counter(s, decimal-leading-zero);
  position: absolute; left: 0; top: .1rem;
  font: 600 .8rem/1 var(--mono); padding: .35rem .4rem; border: 1px solid var(--rule-strong);
}
.steps > li > strong:first-child { font-family: var(--display); font-weight: 650; display: block; margin-bottom: .2rem; font-size: 1.05rem; }

/* Quote of creator's notes */
.note-quote {
  max-width: var(--measure); margin: 0 0 1.5rem; padding: 1rem 1.25rem;
  border-left: 3px solid var(--ink); background: var(--surface);
}
.note-quote p:last-child { margin: 0; }
.note-quote .label { display: block; margin-bottom: .4rem; }

/* Callouts */
.callout { max-width: var(--measure); border: 1px solid var(--rule-strong); padding: 1rem 1.25rem; margin: 1.5rem 0; background: var(--surface); }
.callout .label { display: block; margin-bottom: .4rem; color: var(--ink); }
.callout p:last-child, .callout ul:last-child { margin-bottom: 0; }
.callout.pending { border-style: dashed; background: transparent; }
.callout.pending .label { color: var(--muted); }
.callout ul { padding-left: 1.2rem; margin: 0; }

/* Figures */
figure { margin: 1.5rem 0 2rem; }
figure img { border: 1px solid var(--rule-strong); background: var(--sunken); }
figcaption { font: .78rem/1.45 var(--mono); color: var(--muted); margin-top: .55rem; max-width: var(--measure); }
.fig-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 1rem; margin: 1.5rem 0 2rem; }
.fig-row figure { margin: 0; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 20rem); gap: 2.5rem; align-items: start; }
.split figure { margin-top: 0; }
@media (max-width: 760px) { .split { grid-template-columns: 1fr; gap: 0; } }

/* Prompt / code blocks */
.prompt { margin: 1.5rem 0 2rem; border: 1px solid var(--rule-strong); max-width: 52rem; }
.prompt-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .55rem .6rem .55rem .9rem; border-bottom: 1px solid var(--rule-strong); background: var(--surface);
}
.prompt-bar .label { color: var(--ink); }
.copy {
  font: 500 .72rem/1 var(--mono); letter-spacing: .05em; text-transform: uppercase;
  background: var(--ink); color: var(--bg); border: 0; padding: .5rem .7rem; cursor: pointer;
}
.copy:hover { background: var(--navy); color: var(--ivory); }
.prompt pre {
  margin: 0; padding: 1.1rem 1.1rem 1.25rem; overflow-x: auto;
  background: var(--code-bg); color: var(--code-ink);
  font: 400 .84rem/1.6 var(--mono); white-space: pre-wrap; word-wrap: break-word;
}
.prompt pre b { color: var(--ice); font-weight: 600; }
.prompt .prompt-note { padding: .6rem .9rem; font: .78rem/1.45 var(--mono); color: var(--muted); border-top: 1px solid var(--rule); background: var(--surface); margin: 0; }

details.long { margin: 1.25rem 0 2rem; border: 1px solid var(--rule-strong); max-width: 52rem; }
details.long > summary {
  cursor: pointer; list-style: none; padding: .9rem 1rem; display: flex; justify-content: space-between; gap: 1rem; align-items: center;
  font: 650 1rem/1.3 var(--display); background: var(--surface);
}
details.long > summary::-webkit-details-marker { display: none; }
details.long > summary::after { content: "+"; font: 500 1.2rem/1 var(--mono); }
details.long[open] > summary::after { content: "–"; }
details.long > summary small { display: block; font: 400 .78rem/1.4 var(--mono); color: var(--muted); margin-top: .25rem; }
details.long .prompt { margin: 0; border: 0; border-top: 1px solid var(--rule-strong); max-width: none; }

/* Framework table */
.fw-table { width: 100%; max-width: 52rem; border-collapse: collapse; margin: 1rem 0 2rem; font-size: .95rem; }
.fw-table th, .fw-table td { text-align: left; vertical-align: baseline; padding: .7rem .75rem .7rem 0; border-top: 1px solid var(--rule); }
.fw-table tr:first-child th, .fw-table tr:first-child td { border-top: 1px solid var(--rule-strong); }
.fw-table th { font: 600 .78rem/1.4 var(--mono); width: 2.5rem; color: var(--muted); }
.fw-table td:nth-child(2) { font-family: var(--display); font-weight: 650; width: 14rem; }
@media (max-width: 640px) {
  .fw-table, .fw-table tbody { display: block; }
  .fw-table tr { display: grid; grid-template-columns: 2rem 1fr; column-gap: .5rem; align-items: baseline; border-top: 1px solid var(--rule); padding: .75rem 0; }
  .fw-table tr:first-child { border-top-color: var(--rule-strong); }
  .fw-table tr:last-child { border-bottom: 1px solid var(--rule); }
  .fw-table tr th, .fw-table tr td, .fw-table tr:first-child th, .fw-table tr:first-child td { display: block; width: auto; border: 0; padding: 0; }
  .fw-table td:nth-child(2) { width: auto; }
  .fw-table td:last-child { grid-column: 2; margin-top: .2rem; }
  .fw-table th:empty + td { grid-column: 1 / -1; }
  .fw-table th:empty + td + td { grid-column: 1 / -1; }
}

/* Camera vocabulary */
.vocab-tools { display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; margin: 1rem 0; }
.vocab-tools input {
  font: 400 .95rem var(--mono); padding: .6rem .75rem; border: 1px solid var(--rule-strong);
  background: var(--surface); color: var(--ink); width: min(100%, 22rem);
}
.vocab { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr)); gap: 0; border-top: 1px solid var(--rule-strong); border-left: 1px solid var(--rule); }
.vocab li { padding: .9rem 1rem 1rem; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.vocab h3 { font-size: 1rem; font-weight: 700; margin-bottom: .35rem; }
.vocab p { margin: 0; font-size: .92rem; line-height: 1.5; }
.vocab li[hidden] { display: none; }

/* Overview */
.hero { padding: clamp(2.5rem, 7vw, 5rem) 0 2.5rem; border-bottom: 1px solid var(--rule-strong); display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 2.5rem; align-items: end; }
.hero h1 { font-size: clamp(2.3rem, 6vw, 4.2rem); font-weight: 780; font-stretch: 118%; letter-spacing: -.025em; }
.hero .dek { font-size: 1.2rem; line-height: 1.55; margin: 1.25rem 0 1.5rem; max-width: 34rem; }
.hero figure { margin: 0; }
.hero .meta { display: flex; flex-wrap: wrap; gap: .5rem; }
@media (max-width: 860px) { .hero { grid-template-columns: 1fr; } }
.btn {
  display: inline-flex; align-items: center; gap: .6rem; padding: .85rem 1.1rem;
  font: 600 .85rem/1 var(--mono); letter-spacing: .04em; text-transform: uppercase;
  background: var(--ink); color: var(--bg); text-decoration: none; border: 1px solid var(--ink);
}
.btn:hover { background: var(--accent-bg); color: var(--accent-ink); border-color: var(--accent-bg); }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost:hover { background: var(--sunken); color: var(--ink); border-color: var(--ink); }

.section-title { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; flex-wrap: wrap; margin: 3rem 0 1.25rem; }
.section-title h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); font-weight: 720; }

.process { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--rule-strong); counter-reset: p; }
.process li { counter-increment: p; display: grid; grid-template-columns: 3.25rem minmax(0, 15rem) minmax(0, 1fr) auto; position: relative; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--rule); align-items: baseline; }
.process li::before { content: counter(p, decimal-leading-zero); font: 600 .85rem/1 var(--mono); }
.process h3 { font-size: 1.05rem; font-weight: 680; }
.process p { margin: 0; }
.process a.go { color: var(--muted); display: inline-flex; align-self: center; }
.process a.go svg { width: 1.05rem; height: 1.05rem; }
.process a.go::after { content: ""; position: absolute; inset: 0; }
.process li:hover a.go, .process a.go:focus-visible { color: var(--link); }
.process li:hover h3 { color: var(--link); }
@media (max-width: 760px) {
  .process li { grid-template-columns: 2.5rem 1fr auto; }
  .process li a.go { grid-column: 3; grid-row: 1; }
  .process li p { grid-column: 2 / 4; }
}

.chapters { display: grid; grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr)); border-top: 1px solid var(--rule-strong); border-left: 1px solid var(--rule); }
.chapters a { display: block; padding: 1.25rem 1.25rem 1.4rem; color: var(--ink); text-decoration: none; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.chapters a:hover { background: var(--surface); }
.chapters .n { font: 800 2.6rem/1 var(--display); font-stretch: 125%; display: block; margin-bottom: .75rem; }
.chapters h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: .5rem; }
.chapters ul { list-style: none; padding: 0; margin: 0; font: .85rem/1.55 var(--mono); color: var(--muted); }

.legend { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); margin: 0 0 1rem; }
.legend div { border-top: 1px solid var(--rule-strong); padding-top: .9rem; }
.legend p { margin: .6rem 0 0; font-size: .95rem; }

/* Pager */
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 4rem; border-top: 1px solid var(--rule-strong); padding-top: 1.25rem; }
.pager a { display: block; padding: 1rem; border: 1px solid var(--rule); color: var(--ink); text-decoration: none; }
.pager a:hover { border-color: var(--rule-strong); background: var(--surface); }
.pager a.next { text-align: right; grid-column: 2; }
.pager small { display: block; font: 500 .72rem/1 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-bottom: .45rem; }
.pager span { font: 650 1.05rem/1.3 var(--display); }

/* Support + footer */
.support { margin-top: 3rem; padding: 1.5rem; border: 1px dashed var(--muted); display: flex; flex-wrap: wrap; gap: 1rem 2rem; justify-content: space-between; align-items: center; }
.support h2 { font-size: 1.2rem; font-weight: 700; margin-bottom: .3rem; }
.support p { margin: 0; color: var(--muted); max-width: 36rem; }
.status { font: 500 .78rem/1 var(--mono); text-transform: uppercase; letter-spacing: .06em; padding: .6rem .8rem; border: 1px solid var(--muted); color: var(--muted); }
.site-foot { margin-top: 3rem; padding: 1.5rem 0 0; border-top: 1px solid var(--rule); display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem 2rem; font: .75rem/1.6 var(--mono); color: var(--muted); }
.site-foot a { color: var(--muted); }

.sources { list-style: none; padding: 0; margin: 0 0 2rem; max-width: 52rem; border-top: 1px solid var(--rule-strong); }
.sources li { padding: 1.1rem 0; border-bottom: 1px solid var(--rule); }
.sources h3 { font-size: 1.1rem; font-weight: 680; margin-bottom: .3rem; }
.sources h3 a { color: var(--ink); }
.sources .label { display: block; margin-bottom: .5rem; }
.sources p { margin: 0 0 .5rem; max-width: var(--measure); }

.downloads { display: grid; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); gap: 1rem; margin: 1rem 0 2rem; }
.downloads a { display: block; border: 1px solid var(--rule-strong); padding: 1rem; color: var(--ink); text-decoration: none; }
.downloads a:hover { background: var(--accent-bg); color: var(--accent-ink); }
.downloads b { display: block; font: 680 1rem/1.3 var(--display); margin-bottom: .35rem; }
.downloads small { font: .75rem/1.45 var(--mono); color: inherit; opacity: .8; }

.toast {
  visibility: hidden; opacity: 0;
  position: fixed; left: 50%; bottom: 1.25rem; transform: translate(-50%, 150%);
  background: var(--ink); color: var(--bg); font: 500 .8rem/1 var(--mono); padding: .8rem 1rem;
  transition: transform .2s ease, opacity .2s, visibility .2s; z-index: 60; pointer-events: none;
}
.toast.show { transform: translate(-50%, 0); visibility: visible; opacity: 1; }

@media print {
  .topbar, .toc, .pager, .copy, .support { display: none !important; }
  .shell { display: block; }
  details.long { display: block; }
}

/* Toolbox */
.tool-icon { width: 1.6rem; height: 1.6rem; flex: none; }
.toolbox { display: grid; grid-template-columns: repeat(auto-fill, minmax(15.5rem, 1fr)); border-top: 1px solid var(--rule-strong); border-left: 1px solid var(--rule); }
.toolbox .tool { display: flex; flex-direction: column; gap: .35rem; padding: 1.1rem 1.15rem 1.25rem; color: var(--ink); text-decoration: none; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.toolbox .tool:hover { background: var(--surface); }
.toolbox .tool .tool-icon { width: 2rem; height: 2rem; margin-bottom: .5rem; padding: .3rem; box-sizing: content-box; background: var(--accent-bg); color: var(--accent-ink); }
.toolbox b { font: 720 1.25rem/1.2 var(--display); font-stretch: 112%; }
.toolbox small { font: .92rem/1.5 var(--serif); color: var(--muted); }
.chapter-tools { list-style: none; padding: 0; margin: 1.25rem 0 0; display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; }
.chapter-tools li { display: flex; align-items: center; gap: .6rem; font: 650 1rem/1.2 var(--display); }
.chapter-tools .tool-icon { width: 1.4rem; height: 1.4rem; padding: .3rem; box-sizing: content-box; background: var(--accent-bg); color: var(--accent-ink); }
.chapter-tools .label { display: block; font-size: .65rem; margin-bottom: .15rem; }
code { font: .86em/1.4 var(--mono); background: var(--sunken); padding: .08em .3em; }

/* Routes */
.routes { display: grid; grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr)); gap: 1rem; }
.route { display: flex; flex-direction: column; gap: .5rem; padding: 1.25rem; border: 1px solid var(--rule-strong); color: var(--ink); text-decoration: none; }
a.route:hover { background: var(--accent-bg); color: var(--accent-ink); }
a.route:hover .label { color: inherit; }
.route b { font: 760 1.5rem/1.15 var(--display); font-stretch: 115%; }
.route p { margin: 0; flex: 1; }
.route.off { border-style: dashed; border-color: var(--muted); color: var(--muted); }
.route .status, .route .status-on { align-self: flex-start; margin-top: .5rem; }
.status-on { font: 600 .78rem/1 var(--mono); text-transform: uppercase; letter-spacing: .06em; padding: .6rem .8rem; background: var(--ink); color: var(--bg); }

/* Draft vs prompt */
.compare { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 1rem; align-items: start; margin: 1rem 0 1.5rem; }
.compare .prompt { margin: 0; max-width: none; }
.draft { border: 1px solid var(--rule); background: var(--surface); padding: 1rem 1.1rem 1.2rem; }
.draft .label { display: block; margin-bottom: .75rem; }
.draft pre { margin: 0; white-space: pre-wrap; font: 400 .98rem/1.6 var(--serif); color: var(--ink); }
@media (max-width: 860px) { .compare { grid-template-columns: 1fr; } }
.callout.tip { border: 0; border-left: 6px solid var(--ice); background: var(--surface); margin: 0 0 2.5rem; max-width: 52rem; padding: 1.1rem 1.35rem; }
.callout.tip p { font-size: 1.1rem; }
.failures { list-style: none; padding: 0; margin: 0 0 1.5rem; display: grid; grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr)); gap: .5rem; max-width: 52rem; }
.failures li { border: 1px solid var(--rule-strong); padding: .7rem .85rem; font: 600 .95rem/1.3 var(--display); display: flex; gap: .6rem; align-items: baseline; }
.failures li::before { content: "×"; font: 600 1rem/1 var(--mono); color: var(--muted); }
.ladder { list-style: none; padding: 0; margin: .5rem 0 1rem; display: flex; flex-wrap: wrap; max-width: 52rem; }
.ladder li { flex: 1 1 7rem; border: 1px solid var(--rule-strong); margin: 0 -1px -1px 0; padding: .75rem .85rem; position: relative; }
.ladder b { display: block; font: 780 1.35rem/1 var(--display); font-stretch: 120%; }
.ladder span { font: .72rem/1.3 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.ladder li:nth-child(n+2) b::before { content: "→ "; color: var(--muted); font-weight: 400; }
.fw-table th:empty { display: none; }
.wordmark { align-items: center; }
.wordmark .ring { width: 1.35rem; height: 1.35rem; flex: none; color: var(--ink); }
.foot-mark { display: inline-flex; align-items: center; gap: .5rem; }
.foot-mark .ring { width: .95rem; height: .95rem; }

/* Long prompts collapse */
.prompt.collapsible pre { position: relative; }
@media (min-width: 761px) { .prompt .expand { display: none; } }
@media (max-width: 760px) {
.prompt.collapsed pre { max-height: 18rem; overflow: hidden; }
}
.prompt.collapsed pre::after {
  content: none; position: absolute; left: 0; right: 0; bottom: 0; height: 5rem;
  background: linear-gradient(to bottom, transparent, var(--code-bg)); pointer-events: none;
}
.prompt .expand {
  display: block; width: 100%; border: 0; border-top: 1px solid var(--rule-strong); cursor: pointer;
  background: var(--surface); color: var(--ink); padding: .7rem .9rem; text-align: left;
  font: 500 .74rem/1 var(--mono); letter-spacing: .05em; text-transform: uppercase;
}
.prompt .expand:hover { background: var(--accent-bg); color: var(--accent-ink); }
@media print { .prompt.collapsed pre { max-height: none; } .prompt .expand { display: none; } }

/* Camera vocabulary: tap-to-open rows on phones */
.vocab .term { all: unset; display: block; font: inherit; color: inherit; }
.vocab-more { display: none; }
@media (max-width: 760px) {
  .vocab { display: block; border-left: 0; }
  .vocab li { border-right: 0; padding: 0; }
  .vocab h3 { margin: 0; }
  .vocab .term { width: 100%; box-sizing: border-box; padding: .85rem .25rem; cursor: pointer; display: flex; justify-content: space-between; gap: 1rem; }
  .vocab .term::after { content: "+"; font: 500 1.1rem/1 var(--mono); color: var(--muted); }
  .vocab li.open .term::after { content: "–"; }
  .vocab .term:focus-visible { outline: 2px solid var(--link); outline-offset: -2px; }
  .vocab p { display: none; padding: 0 .25rem 1rem; color: var(--ink); }
  .vocab li.open p, .vocab.filtering p { display: block; }
  .vocab.filtering .term::after { content: ""; }
  .vocab.limited:not(.filtering) li:nth-child(n+9) { display: none; }
  .vocab-more {
    display: block; width: 100%; margin: 0 0 1.5rem; padding: .8rem; cursor: pointer;
    background: var(--surface); color: var(--ink); border: 1px solid var(--rule-strong);
    font: 500 .78rem/1 var(--mono); letter-spacing: .05em; text-transform: uppercase;
  }
  .vocab.filtering + .vocab-more { display: none; }
  /* While the full list is open, Show less stays pinned to the bottom of the screen until the list ends */
  .vocab:not(.limited) + .vocab-more {
    position: sticky; bottom: .75rem; z-index: 5;
    background: var(--ink); color: var(--bg); border-color: var(--ink);
    box-shadow: 0 6px 18px rgba(0,0,0,.18);
  }
}
/* Brand marks in the toolbox */
.tool-icons { display: inline-flex; gap: .4rem; }
.toolbox .tool .tool-icon.brand { padding: .45rem; width: 1.7rem; height: 1.7rem; }
.chapter-tools .tool-icon.brand { padding: .4rem; width: 1.2rem; height: 1.2rem; }
@media (max-width: 760px) { .prompt.collapsed pre::after { content: ""; } }
.details-body { padding: 1rem 1.25rem .25rem; }
.meta.actions { display: flex; gap: .5rem; flex-wrap: wrap; margin-top: 1.5rem; }