/* Hallmark · system-managed project: Electric Studio (locked, from the deck)
 * macrostructure: long-document argument w/ module rail · nav: numbered module rail
 * footer: locked deck treatment · enrichment: none (typography + data)
 * Hallmark · pre-emit critique: P5 H5 E4 S5 R5 V4
 * No em dashes anywhere in this file, including comments. */

@font-face { font-family: 'Manrope'; src: url('../fonts/manrope-latin-400-normal.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Manrope'; src: url('../fonts/manrope-latin-500-normal.woff2') format('woff2'); font-weight: 500; font-display: swap; }
@font-face { font-family: 'Manrope'; src: url('../fonts/manrope-latin-600-normal.woff2') format('woff2'); font-weight: 600; font-display: swap; }
@font-face { font-family: 'Manrope'; src: url('../fonts/manrope-latin-700-normal.woff2') format('woff2'); font-weight: 700; font-display: swap; }
@font-face { font-family: 'Manrope'; src: url('../fonts/manrope-latin-800-normal.woff2') format('woff2'); font-weight: 800; font-display: swap; }

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; overflow-x: clip; }
[id] { scroll-margin-top: 4.5rem; }
html:focus-within { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--ink);
  background: var(--paper);
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
button { font: inherit; cursor: pointer; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
.on-dark :focus-visible, .module--dark :focus-visible { outline-color: var(--blue-light); }
::selection { background: var(--blue); color: var(--on-blue); }

.wrap { max-width: var(--max-w); margin-inline: auto; padding-inline: var(--pad-x); }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

/* ---------- eyebrow: the recurring motif ---------- */
.eyebrow {
  display: flex; align-items: center; gap: 0.55em;
  font-size: var(--text-eyebrow); font-weight: 600;
  letter-spacing: var(--track-eyebrow); text-transform: uppercase;
  color: var(--blue);
}
.eyebrow::before { content: ''; width: 9px; height: 9px; background: var(--blue); flex: none; }
.eyebrow--plain::before { display: none; }
.module--dark .eyebrow, .eyebrow.on-dark { color: var(--blue-light); }
.module--dark .eyebrow::before, .eyebrow.on-dark::before { background: var(--blue); }

/* ---------- type ---------- */
.display {
  font-size: var(--text-display); font-weight: 800; line-height: var(--leading-display);
  letter-spacing: -0.015em; overflow-wrap: anywhere; min-width: 0;
}
.h2 {
  font-size: var(--text-h2); font-weight: 800; line-height: 1.1;
  letter-spacing: -0.01em; color: var(--ink); margin-top: var(--s-4);
  overflow-wrap: anywhere; min-width: 0;
}
.module--dark .h2 { color: var(--paper); }
.sub { font-size: var(--text-lead); color: var(--muted); margin-top: var(--s-3); max-width: var(--measure); }
.module--dark .sub { color: var(--muted-dark-2); }
.sub strong { color: var(--ink); font-weight: 700; }
.module--dark .sub strong { color: var(--warm-off); }
.h3 { font-size: var(--text-h3); font-weight: 800; line-height: 1.2; letter-spacing: -0.005em; }
.lead { font-size: 1.35rem; font-weight: 800; line-height: 1.3; letter-spacing: -0.005em; }
.body-muted { color: var(--muted); }
.module--dark .body-muted { color: var(--muted-dark-2); }
p { max-width: var(--measure); }

/* ---------- sections ---------- */
.module { padding-block: var(--s-9) var(--s-8); border-top: 1px solid var(--line); }
.module--dark { background: var(--ink); color: var(--warm-off); border-top: none; }
.module-head { max-width: 54rem; }
.slide-block { margin-top: var(--s-8); }
.slide-block > .h3 { margin-bottom: var(--s-2); }
.slide-note { color: var(--muted); font-size: var(--text-lead); margin-bottom: var(--s-5); max-width: var(--measure); }
.module--dark .slide-note { color: var(--muted-dark-2); }

/* ---------- cards ---------- */
.card {
  background: var(--paper); border: 1px solid var(--line);
  padding: var(--s-5);
}
.card--bar { border-left: var(--bar-left) solid var(--blue); }
.card--tint { background: var(--tint-2); }
.dark-card {
  background: var(--ink); color: var(--warm-off);
  border-top: var(--bar-top) solid var(--blue);
  padding: var(--s-5);
}
.dark-card--raised { background: var(--ink-2); }
.lane { background: var(--ink); border-left: var(--bar-left) solid var(--blue); color: var(--warm-off); }
.module--dark .card { border-color: transparent; }
.module--dark .card, .module--dark .card--tint { color: var(--ink); }

/* ---------- stats ---------- */
.stat-num { font-size: var(--text-stat); font-weight: 800; line-height: 1.05; letter-spacing: -0.01em; }
.stat-label {
  font-size: var(--text-eyebrow); font-weight: 600; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--muted); margin-top: var(--s-1);
}
.dark-card .stat-label, .module--dark .stat-label, .track-card .stat-label { color: var(--muted-dark); }
.stat-body { font-size: var(--text-small); color: var(--muted); margin-top: var(--s-2); }
.dark-card .stat-body { color: var(--muted-dark-2); }

.stat-strip { display: flex; border: 1px solid var(--line); border-left: var(--bar-left) solid var(--blue); background: var(--paper); }
.stat-strip > div { flex: 1 1 0; padding: var(--s-4) var(--s-5); }
.stat-strip > div + div { border-left: 1px solid var(--line); }
.stat-strip .stat-num { font-size: 1.6rem; color: var(--blue); }

/* ---------- terminal bands (label | divider | content) ---------- */
.band {
  display: grid; grid-template-columns: 12rem 1px 1fr; align-items: center;
  gap: var(--s-5); margin-top: var(--s-6);
  background: var(--ink); color: var(--warm-off); padding: var(--s-5) var(--s-6);
}
.band-label {
  font-size: var(--text-eyebrow); font-weight: 600; letter-spacing: var(--track-eyebrow);
  text-transform: uppercase; color: var(--blue-light);
}
.band-rule { width: 1px; height: 2.4rem; background: var(--line-dark); }
.band-copy { font-size: var(--text-body); color: var(--muted-dark-2); max-width: none; }
.band-copy strong { color: var(--paper); font-weight: 700; }
.module--dark .band { background: var(--tint); color: var(--ink); }
.module--dark .band .band-label { color: var(--blue-dark); }
.module--dark .band .band-rule { background: #C9D2F5; }
.module--dark .band .band-copy { color: var(--muted); }
.module--dark .band .band-copy strong { color: var(--ink); }
.band--stat { grid-template-columns: minmax(9rem, 12rem) 1px 1fr; }
.band-stat-num { font-size: 1.9rem; font-weight: 800; color: var(--paper); line-height: 1.1; }
.band--blue { background: var(--blue); color: var(--on-blue); }
.band--blue .band-label { color: var(--on-blue); }
.band--blue .band-rule { background: rgba(242, 245, 255, 0.35); }
.band--blue .band-copy, .band--blue .band-copy strong { color: var(--on-blue); }

/* ---------- electric table ---------- */
.table-cap { border-top: var(--bar-top) solid var(--blue); overflow-x: auto; }
/* sticky first column keeps scrolling tables legible on narrow viewports */
table.et thead th:first-child { position: sticky; left: 0; background: var(--ink); z-index: 2; }
table.et tbody td:first-child { position: sticky; left: 0; background: var(--paper); z-index: 1; }
table.et tbody tr.hl td:first-child { background: var(--tint); }
table.et { width: 100%; border-collapse: collapse; font-size: var(--text-small); background: var(--paper); }
table.et thead th {
  background: var(--ink); color: var(--paper); text-align: left;
  font-size: var(--text-eyebrow); font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase;
  padding: var(--s-3) var(--s-4); white-space: nowrap;
}
table.et tbody td { padding: var(--s-3) var(--s-4); border-bottom: 1px solid var(--line); vertical-align: top; }
table.et tbody tr:last-child td { border-bottom: 1px solid var(--line); }
table.et .num { color: var(--blue); font-weight: 700; }
table.et .muted { color: var(--muted); }
table.et .strong { font-weight: 700; }
table.et .c { text-align: center; }
table.et .r { text-align: right; }
table.et tr.hl td { background: var(--tint); }
table.et tr.hl td:first-child { box-shadow: inset var(--bar-left) 0 0 var(--blue); }
.table-foot { font-size: var(--text-caption); color: var(--faint); margin-top: var(--s-3); }

/* ---------- chain row (the brand: arithmetic you can follow) ---------- */
.chain { display: flex; align-items: stretch; gap: var(--s-2); flex-wrap: wrap; }
.chain-card {
  flex: 1 1 8.5rem; min-width: 8.5rem; background: var(--tint-2);
  border: 1px solid var(--line); padding: var(--s-3) var(--s-4);
}
.chain-eyebrow {
  font-size: 0.66rem; font-weight: 600; letter-spacing: 0.13em; text-transform: uppercase;
  color: var(--blue); white-space: nowrap;
}
.chain-num { font-size: clamp(1.35rem, 2.2vw, 1.8rem); font-weight: 800; line-height: 1.15; font-variant-numeric: tabular-nums; }
.chain-sub { font-size: var(--text-caption); color: var(--muted); }
.chain-op {
  align-self: center; color: var(--blue); font-weight: 800;
  font-size: 1.35rem; flex: 0 0 auto; padding-inline: 0.1rem;
}
.chain-card--terminal { background: var(--blue); border-color: var(--blue); color: var(--on-blue); }
.chain-card--terminal .chain-eyebrow, .chain-card--terminal .chain-sub { color: var(--on-blue); }

/* ---------- rate chips in gutters ---------- */
.chip {
  display: inline-block; background: var(--tint); color: var(--blue-dark);
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.45em 0.95em; border-radius: 999px; white-space: nowrap;
}

/* ---------- funnel (activity chain, slide 23) ---------- */
.funnel { display: flex; align-items: stretch; gap: var(--s-2); flex-wrap: wrap; }
.funnel-card {
  flex: 1 1 9rem; min-width: 9rem; background: var(--tint-2); border: 1px solid var(--line);
  padding: var(--s-4);
}
.funnel-card .stat-num { font-variant-numeric: tabular-nums; }
.funnel-card--win { background: var(--blue); border-color: var(--blue); color: var(--on-blue); }
.funnel-card--win .stat-label { color: var(--on-blue); }
.funnel-join { align-self: center; flex: 0 0 auto; }

/* ---------- numbered items ---------- */
.numbered { display: grid; gap: 0; }
.numbered > li { display: grid; grid-template-columns: 2.6rem 1fr; gap: var(--s-4); padding-block: var(--s-4); border-bottom: 1px solid var(--line); list-style: none; }
.numbered > li:first-child { border-top: 1px solid var(--line); }
.module--dark .numbered > li { border-color: var(--line-dark); }
.numbered .n { color: var(--blue); font-weight: 800; font-size: 1.1rem; }
.module--dark .numbered .n { color: var(--blue-light); }
.numbered .t { font-weight: 700; }
.numbered .d { color: var(--muted); font-size: var(--text-small); }
.module--dark .numbered .d { color: var(--muted-dark-2); }
.numbered--plain > li { grid-template-columns: 1fr; }
.numbered--plain .n { display: none; }
/* numbered lists inside dark cards: blue-light numbers, dark hairlines, light body */
.dark-card .numbered .n { color: var(--blue-light); }
.dark-card .numbered > li { border-color: var(--line-dark); }
.dark-card .numbered .d { color: var(--muted-dark-2); }

/* ---------- two-col asymmetric split ---------- */
.split { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: var(--s-7); align-items: start; }
.split--tail { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
.split--even { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--s-5); }
.cols-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s-4); }
.cols-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-4); }
.cols-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--s-4); }

/* ---------- top nav: numbered module rail ---------- */
.topnav {
  position: sticky; top: 0; z-index: 40;
  background: color-mix(in srgb, var(--ink) 92%, transparent);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-dark);
}
.topnav-inner { display: flex; align-items: center; gap: var(--s-5); padding-block: 0.7rem; }
.brand { display: flex; align-items: center; gap: 0.6em; color: var(--paper); text-decoration: none; font-size: 0.78rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; white-space: nowrap; }
.brand::before { content: ''; width: 10px; height: 10px; background: var(--blue); }
.rail {
  display: flex; gap: 0.15rem; overflow-x: auto; scrollbar-width: none;
  margin-right: auto; min-width: 0;
  /* If the rail ever has to scroll again, the edges say so rather than
     slicing a label mid-glyph with no affordance. */
  -webkit-mask-image: linear-gradient(to right, transparent 0, #000 14px, #000 calc(100% - 14px), transparent 100%);
  mask-image: linear-gradient(to right, transparent 0, #000 14px, #000 calc(100% - 14px), transparent 100%);
}
.rail:not(.is-scrollable) { -webkit-mask-image: none; mask-image: none; }
.rail:focus-visible { outline: 2px solid var(--blue-light); outline-offset: 2px; }
.rail::-webkit-scrollbar { display: none; }
.rail a {
  display: flex; align-items: baseline; gap: 0.45em; text-decoration: none;
  padding: 0.45rem 0.7rem; white-space: nowrap;
  font-size: 0.78rem; font-weight: 600; color: var(--muted-dark);
  border-bottom: 2px solid transparent;
  transition: color var(--dur-micro) var(--ease-out);
}
.rail a .rn { color: var(--blue-light); font-size: 0.68rem; font-weight: 700; }
.rail a:hover { color: var(--warm-off); }
.rail a[aria-current="true"] { color: var(--paper); border-bottom-color: var(--blue); }
.nav-cta {
  margin-left: var(--s-4); white-space: nowrap; text-decoration: none;
  background: var(--blue); color: var(--on-blue);
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.02em;
  padding: 0.5rem 0.95rem;
  transition: transform var(--dur-micro) var(--ease-out), background-color var(--dur-short) var(--ease-out);
}
.nav-cta:hover { background: var(--blue-dark); }
.nav-cta:active { transform: translateY(1px); }

/* ---------- hero + close bookends ---------- */
.bookend { background: var(--ink); color: var(--warm-off); position: relative; }
.bookend--hero { padding-block: var(--s-8) var(--s-9); }
.bookend--close { padding-block: var(--s-9); }
.bookend .strip { position: absolute; left: 0; right: 0; bottom: 0; height: var(--strip); background: var(--blue); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 4fr); gap: var(--s-8); align-items: start; margin-top: var(--s-7); }
.hero-display { font-size: var(--text-display); font-weight: 800; line-height: var(--leading-display); letter-spacing: -0.015em; color: var(--paper); }
.hero-display .blue { color: var(--blue); }
.hero-thesis { margin-top: var(--s-5); font-size: 1.25rem; font-weight: 800; color: var(--paper); }
.hero-sub { margin-top: var(--s-3); font-size: var(--text-lead); color: var(--muted-dark-2); max-width: 34rem; }
.contact-block { margin-top: var(--s-7); border-left: var(--bar-left) solid var(--blue); padding-left: var(--s-4); }
.contact-block .name { font-weight: 800; color: var(--paper); font-size: 1.05rem; }
.contact-block .links { color: var(--muted-dark-2); font-size: var(--text-small); }
.contact-block .links a { color: var(--muted-dark-2); text-decoration: none; border-bottom: 1px solid var(--line-dark); }
.contact-block .links a:hover { color: var(--warm-off); border-bottom-color: var(--blue-light); }
.contact-block .role { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted-dark); margin-top: var(--s-2); }
.track-card { background: var(--ink-2); border-top: var(--bar-top) solid var(--blue); padding: var(--s-5) var(--s-5) var(--s-4); }
.track-card .row { padding-block: var(--s-4); border-bottom: 1px solid var(--line-dark); }
.track-card .row:last-of-type { border-bottom: 1px solid var(--line-dark); }
.track-card .stat-num { color: var(--paper); }
.track-note { padding-top: var(--s-4); color: var(--blue-light); font-size: var(--text-small); font-weight: 600; line-height: 1.5; }

/* ---------- stack diagram (slide 11) ---------- */
.stack { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 4fr) minmax(0, 5fr); gap: var(--s-5); align-items: stretch; margin-top: var(--s-5); }
.stack-col { display: grid; gap: var(--s-3); align-content: start; }
.stack-col-label { font-size: var(--text-eyebrow); font-weight: 600; letter-spacing: var(--track-eyebrow); text-transform: uppercase; color: var(--blue-light); margin-bottom: var(--s-1); }
.tool {
  display: grid; grid-template-columns: 2.4rem 1fr; gap: var(--s-3); align-items: center;
  background: var(--paper); border-left: var(--bar-left) solid var(--blue);
  padding: var(--s-3) var(--s-4); color: var(--ink); text-align: left; border-right: none; border-top: none; border-bottom: none;
  transition: transform var(--dur-micro) var(--ease-out), box-shadow var(--dur-short) var(--ease-out);
}
.tool img { width: 2.1rem; height: 2.1rem; object-fit: contain; }
.tool .tn { font-weight: 800; font-size: 0.98rem; line-height: 1.25; }
.tool .td { color: var(--muted); font-size: 0.82rem; line-height: 1.4; }
.stack-col:nth-child(2) { grid-template-rows: auto 1fr auto; }
.hub {
  background: var(--blue); color: var(--on-blue); padding: var(--s-6) var(--s-5);
  display: grid; justify-items: center; text-align: center; align-content: center; gap: var(--s-2);
}
.hub img { width: 3.4rem; height: 3.4rem; }
.hub .hub-name { font-size: 1.5rem; font-weight: 800; letter-spacing: 0.24em; text-transform: uppercase; }
.hub .hub-sub { font-weight: 700; }
.hub .hub-detail { font-size: 0.85rem; color: var(--on-blue); }
.hub-dest {
  margin-top: var(--s-3); background: var(--ink-2); border: 1px solid var(--line-dark);
  display: grid; grid-template-columns: 2.4rem 1fr; gap: var(--s-3); align-items: center; padding: var(--s-3) var(--s-4);
}
.hub-dest img { width: 2.1rem; height: 2.1rem; object-fit: contain; }
.hub-dest .tn { color: var(--warm-off); font-weight: 800; font-size: 0.98rem; }
.hub-dest .td { color: var(--muted-dark); font-size: 0.82rem; }

/* ---------- small parts referenced in markup ---------- */
.tool-icons { display: flex; flex-direction: column; gap: 3px; align-items: center; }
.tool-icons img { width: 1.05rem; height: 1.05rem; object-fit: contain; }
.n-lg { font-size: 1.35rem; font-weight: 800; color: var(--blue); }
.numbered-eyebrow { margin-bottom: var(--s-2); }
.toc-link { color: var(--paper); text-decoration: none; }
.toc-link:hover .t { color: var(--blue-light); }
.toc-link .t { font-weight: 700; transition: color var(--dur-micro) var(--ease-out); }
td.hl-col { background: var(--tint); }
.band a { color: var(--blue-light); }
.module--dark .band a { color: var(--blue-dark); }

/* ---------- prompt terminal (slide 12) ---------- */
.prompts { display: grid; gap: var(--s-3); }
.prompt { border-left: var(--bar-left) solid var(--blue); background: var(--ink); }
.prompt-q { display: grid; grid-template-columns: 1.6rem 1fr; gap: var(--s-3); padding: var(--s-4); align-items: start; }
.prompt-q img { width: 1.35rem; height: 1.35rem; margin-top: 0.15rem; }
.prompt-q .q { color: var(--paper); font-weight: 600; font-size: 0.98rem; min-height: 2.6em; }
.prompt-out { background: var(--ink-2); padding: var(--s-3) var(--s-4) var(--s-3) 3.4rem; color: var(--muted-dark-2); font-size: 0.9rem; }
.prompt-out .arrow { color: var(--blue-light); font-weight: 700; margin-right: 0.5em; }
.caret { display: inline-block; width: 0.55ch; height: 1em; background: var(--blue-light); vertical-align: text-bottom; animation: blink 1s steps(2, start) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.prompt-dots { display: flex; gap: 0; margin-top: calc(var(--s-3) - 8px); margin-left: -8px; }
.prompt-dots button { position: relative; width: 24px; height: 24px; border: 0; background: transparent; padding: 0; }
.prompt-dots button::before { content: ''; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 0.55rem; height: 0.55rem; border-radius: 999px; border: 1px solid var(--line-dark); }
.prompt-dots button[aria-current="true"]::before { background: var(--blue); border-color: var(--blue); }

/* ---------- stage stepper (slides 16-20) ---------- */
.stage-tabs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--s-3); }
.stage-tab {
  text-align: left; background: var(--paper); border: 1px solid var(--line);
  border-left: var(--bar-left) solid var(--blue); padding: var(--s-4);
  transition: background-color var(--dur-short) var(--ease-out), color var(--dur-short) var(--ease-out);
}
.stage-tab .sr { display: block; font-size: 1.45rem; font-weight: 800; color: var(--blue); line-height: 1.1; }
.stage-tab .sn { display: block; font-size: 0.72rem; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; margin-top: 0.15rem; }
.stage-tab .sq { display: block; font-size: 0.8rem; color: var(--muted); margin-top: var(--s-2); }
.stage-tab[aria-selected="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.stage-tab[aria-selected="true"] .sr { color: var(--blue-light); }
.stage-tab[aria-selected="true"] .sq { color: var(--muted-dark-2); }
.stage-panel { margin-top: var(--s-5); }
.stage-meta { display: grid; gap: var(--s-3); }
.stage-meta .card h4 { font-size: var(--text-eyebrow); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--blue); margin-bottom: var(--s-1); }
.stage-meta .dark-card h4 { color: var(--blue-light); font-size: var(--text-eyebrow); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: var(--s-1); }

/* ---------- capacity: ramp chart (slide 22) ---------- */
.ramp-chart { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--s-4); align-items: end; padding-top: var(--s-4); }
.ramp-bar { display: flex; flex-direction: column; justify-content: flex-end; align-items: center; gap: 0.4rem; }
.ramp-bar .v { font-weight: 800; font-size: 1.05rem; font-variant-numeric: tabular-nums; }
.ramp-bar .bar { width: 100%; background: var(--blue); min-height: 2px; }
.ramp-bar .bar.zero { background: var(--line); height: 2px; }
.ramp-axis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--s-4); border-top: 1px solid var(--line); margin-top: 0; padding-top: var(--s-2); text-align: center; }
.ramp-axis .q { font-weight: 700; font-size: 0.9rem; }
.ramp-axis .m { color: var(--faint); font-size: var(--text-caption); }

/* ---------- shaded cells (capacity grid + comp table) ---------- */
table.et td.cell { text-align: center; font-variant-numeric: tabular-nums; font-weight: 600; }
table.et td.cell[data-band="0"] { background: var(--ramp-0); color: var(--faint); font-weight: 400; }
table.et td.cell[data-band="1"] { background: var(--ramp-1); }
table.et td.cell[data-band="2"] { background: var(--ramp-2); }
table.et td.cell[data-band="3"] { background: var(--ramp-3); }
table.et td.cell[data-band="4"] { background: var(--ramp-4); }
table.et td.cell[data-band="5"] { background: var(--ramp-5); }
.grid-table td.yr { text-align: center; font-weight: 700; font-variant-numeric: tabular-nums; }
.grid-table select {
  font: inherit; font-size: 0.82rem; font-weight: 600; color: var(--blue-dark);
  background: var(--tint); border: 1px solid transparent; padding: 0.3rem 0.4rem; max-width: 100%;
}
.grid-table select:hover { border-color: var(--blue); }
.grid-table select:focus-visible { outline: 2px solid var(--blue); outline-offset: 1px; }

/* ---------- calculator controls ---------- */
.controls { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s-5); margin-block: var(--s-5); }
.control label { display: flex; justify-content: space-between; align-items: baseline; gap: var(--s-3); font-size: var(--text-eyebrow); font-weight: 600; letter-spacing: 0.13em; text-transform: uppercase; color: var(--muted); }
.control output { color: var(--ink); font-weight: 800; font-size: 1.05rem; letter-spacing: 0; font-variant-numeric: tabular-nums; }
.control input[type="range"] { width: 100%; margin-top: var(--s-2); accent-color: var(--blue); height: 1.2rem; }
.control .hint { font-size: var(--text-caption); color: var(--faint); margin-top: 0.2rem; }
.reset-btn {
  background: var(--paper); border: 1px solid var(--line); color: var(--muted);
  font-size: 0.8rem; font-weight: 600; padding: 0.45rem 0.9rem;
  transition: color var(--dur-micro) var(--ease-out), border-color var(--dur-micro) var(--ease-out);
}
.reset-btn:hover { color: var(--ink); border-color: var(--muted); }
.reset-btn:active { transform: translateY(1px); }
.reset-btn[disabled] { opacity: 0.45; cursor: default; }
.calc-status { font-size: var(--text-caption); color: var(--faint); }
.adv { grid-column: 1 / -1; border-top: 1px solid var(--line); padding-top: var(--s-3); }
.adv summary { cursor: pointer; font-size: var(--text-eyebrow); font-weight: 600; letter-spacing: 0.13em; text-transform: uppercase; color: var(--muted); list-style: none; }
.adv summary::-webkit-details-marker { display: none; }
.adv summary::before { content: '›'; display: inline-block; color: var(--blue); font-weight: 800; margin-right: 0.5em; transition: transform var(--dur-short) var(--ease-out); }
.adv[open] summary::before { transform: rotate(90deg); }
.adv-grid { display: flex; gap: var(--s-4); flex-wrap: wrap; margin-top: var(--s-3); }
.adv-grid label { display: grid; gap: 0.25rem; font-size: var(--text-caption); font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.adv-grid input { font: inherit; font-variant-numeric: tabular-nums; font-weight: 600; padding: 0.35rem 0.5rem; border: 1px solid var(--line); width: 8.5rem; }
.adv-grid input:hover { border-color: var(--muted); }
.adv .hint { font-size: var(--text-caption); color: var(--faint); margin-top: var(--s-2); }

/* ---------- milestone toggle (slide 25) ---------- */
.seg { display: inline-flex; border: 1px solid var(--line); }
.seg button { background: var(--paper); border: none; padding: 0.5rem 1.1rem; font-size: 0.85rem; font-weight: 700; color: var(--muted); }
.seg button + button { border-left: 1px solid var(--line); }
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.matrix { display: grid; grid-template-columns: 9rem minmax(0, 1fr) minmax(0, 1fr); gap: var(--s-3); }
.matrix-rail { background: var(--tint-2); border-left: var(--bar-left) solid var(--blue); padding: var(--s-3); display: grid; align-content: center; }
.matrix-rail .rl { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.13em; text-transform: uppercase; color: var(--blue-dark); }
.matrix-group-head { background: var(--ink); border-top: var(--bar-top) solid var(--blue); color: var(--paper); font-size: var(--text-eyebrow); font-weight: 600; letter-spacing: var(--track-eyebrow); text-transform: uppercase; padding: var(--s-3) var(--s-4); }
.matrix-cells { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--s-2); }
.matrix-cells--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.fn-cell { padding: var(--s-3); transition: opacity var(--dur-short) var(--ease-out); }
.fn-cell[data-m="5"] { background: var(--ramp-4); }
.fn-cell[data-m="10"] { background: var(--ramp-3); }
.fn-cell[data-m="20"] { background: var(--ramp-2); }
.fn-cell .fc { display: flex; justify-content: space-between; font-size: 0.66rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--blue-dark); }
.fn-cell .fn { font-weight: 800; font-size: 0.9rem; margin-top: 0.3rem; line-height: 1.25; }
.matrix[data-tier="5"] .fn-cell:not([data-m="5"]) { opacity: 0.28; }
.matrix[data-tier="10"] .fn-cell[data-m="20"] { opacity: 0.28; }

/* ---------- tripwires (slide 29) ---------- */
.tripwires { display: grid; gap: 0; border-top: 1px solid var(--line); }
.trip { border-bottom: 1px solid var(--line); }
.trip summary {
  display: grid; grid-template-columns: 2.4rem minmax(0, 1fr) auto; gap: var(--s-4); align-items: center;
  padding: var(--s-4) var(--s-2); cursor: pointer; list-style: none;
}
.trip summary::-webkit-details-marker { display: none; }
.trip .tn { color: var(--blue); font-weight: 800; }
.trip .tt { font-weight: 700; }
.trip .tw { font-size: 0.85rem; color: var(--muted); text-align: right; }
.trip summary .chev { color: var(--blue); font-weight: 800; transition: transform var(--dur-short) var(--ease-out); }
.trip[open] summary .chev { transform: rotate(90deg); }
.trip-body { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--s-5); padding: 0 var(--s-2) var(--s-5) 4rem; }
.trip-body h4 { font-size: var(--text-eyebrow); font-weight: 600; letter-spacing: 0.13em; text-transform: uppercase; color: var(--blue); margin-bottom: 0.3rem; }
.trip-body p { font-size: var(--text-small); color: var(--muted); }
.trip-body .tw-card { background: var(--tint); padding: var(--s-3) var(--s-4); }
.trip-body .tw-card p { color: var(--ink); }
.trip-body .tw-card .act { color: var(--blue-dark); font-weight: 700; }

/* ---------- cadence strip (slide 28) ---------- */
.cadence { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: var(--s-3); }
.cadence .card { padding: var(--s-3) var(--s-4); }
.cadence .cd { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase; color: var(--blue); }
.cadence .cw { font-weight: 700; font-size: 0.92rem; margin-top: 0.25rem; }

/* ---------- cross-link card ---------- */
.xlink { display: grid; gap: 0.35rem; text-decoration: none; margin-top: var(--s-4); transition: border-color var(--dur-short) var(--ease-out); }
.xlink-t { font-weight: 800; font-size: 1.05rem; color: var(--ink); }
.xlink:hover { border-color: var(--blue); }

/* ---------- downloads ---------- */
.dl-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s-4); }
.dl {
  display: grid; gap: 0.35rem; text-decoration: none;
  background: var(--ink-2); border: 1px solid var(--line-dark); border-left: var(--bar-left) solid var(--blue);
  padding: var(--s-4) var(--s-5);
  transition: transform var(--dur-micro) var(--ease-out), border-color var(--dur-short) var(--ease-out);
}
.dl:hover { transform: translateY(-2px); border-color: var(--blue); border-left-color: var(--blue); }
.dl .df { color: var(--paper); font-weight: 700; font-size: 0.95rem; overflow-wrap: anywhere; }
.dl .dd { color: var(--muted-dark-2); font-size: 0.85rem; }
.dl .dk { color: var(--blue-light); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.13em; text-transform: uppercase; }

/* ---------- footer ---------- */
.site-footer { background: var(--ink); color: var(--muted-dark); position: relative; padding-block: var(--s-6) calc(var(--s-6) + var(--strip)); }
.site-footer .strip { position: absolute; left: 0; right: 0; bottom: 0; height: var(--strip); background: var(--blue); }
.foot-lockup { display: block; height: 26px; width: auto; margin-bottom: var(--s-5); }
.foot-row { display: flex; justify-content: space-between; gap: var(--s-5); flex-wrap: wrap; font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; font-weight: 600; }
/* addresses stay as written; uppercasing an email reads as a typo */
.foot-row a[href^="mailto:"], .foot-row a[href*="linkedin"] { text-transform: none; letter-spacing: 0.04em; }
.foot-row a { color: var(--muted-dark); text-decoration: none; }
.foot-row a:hover { color: var(--warm-off); }
.foot-disclaimer { margin-top: var(--s-4); font-size: 0.8rem; color: var(--muted-dark); letter-spacing: 0; text-transform: none; font-weight: 400; max-width: none; }

/* ---------- helpers ---------- */
.mt-2 { margin-top: var(--s-2); } .mt-3 { margin-top: var(--s-3); } .mt-4 { margin-top: var(--s-4); }
.mt-5 { margin-top: var(--s-5); } .mt-6 { margin-top: var(--s-6); } .mt-7 { margin-top: var(--s-7); }
.hairline-top { border-top: 1px solid var(--line); padding-top: var(--s-4); }
.module--dark .hairline-top { border-color: var(--line-dark); }

/* ---------- responsive ---------- */
@media (max-width: 60rem) {
  .split, .split--even, .split--tail { grid-template-columns: minmax(0, 1fr); gap: var(--s-6); }
  .dl-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: var(--s-6); }
  .cols-3, .cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stack { grid-template-columns: minmax(0, 1fr); }
  .hub { order: -1; }
  .stage-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cadence { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .matrix { grid-template-columns: minmax(0, 1fr); }
  .matrix-cells, .matrix-cells--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .controls { grid-template-columns: minmax(0, 1fr); gap: var(--s-4); }
  .band, .band--stat { grid-template-columns: minmax(0, 1fr); gap: var(--s-2); padding: var(--s-4) var(--s-5); }
  .band-rule { display: none; }
}
@media (max-width: 40rem) {
  .hero-br { display: none; }
  .cols-3, .cols-4 { grid-template-columns: minmax(0, 1fr); }
  .stage-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat-strip { flex-direction: column; }
  .stat-strip > div + div { border-left: none; border-top: 1px solid var(--line); }
  .chain { flex-direction: column; align-items: stretch; }
  .chain-op { align-self: flex-start; padding-left: var(--s-4); }
  .funnel { flex-direction: column; }
  .funnel-join { align-self: flex-start; padding-left: var(--s-4); }
  .dl-grid { grid-template-columns: minmax(0, 1fr); }
  .xlink { margin-top: var(--s-3); }
  .trip summary { grid-template-columns: 2rem minmax(0, 1fr) auto; }
  .trip .tw { display: none; }
  .trip-body { grid-template-columns: minmax(0, 1fr); padding-left: var(--s-2); }
  .ramp-chart { gap: var(--s-2); }
  .ramp-axis { gap: var(--s-2); }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 150ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 150ms !important;
  }
  .caret { animation: none; opacity: 1; }
}

/* ---------- global nav integration ----------
 * The module rail overflowed the viewport on phones and collided with the
 * Email action. Below the global-nav breakpoint the rail is replaced by the
 * shared drawer, which carries all nine modules, and the sticky bar reports
 * the current module instead. */
.topnav { top: var(--gnav-h, 47px); }
.module, .bookend { scroll-margin-top: 5.9rem; }
@media (max-width: 860px) {
  .topnav { display: none; }
  .module, .bookend { scroll-margin-top: 3.6rem; }
}