/*
 * HarmonyStocks docs.css (owner: docs). The three reading pages in the harmonic.fun look (docs/SHELL.md):
 *   /docs      product docs: a page head on paper, sticky contents beside numbered sections   body[data-page="docs"]
 *   /security  the same system: summary figures, tables on graph paper, risks, owner powers    body[data-page="security"]
 *   /deck      keyboard slides on paper: paper, cyan with grain and blue photo slides          body[data-page="deck"]
 * Loaded after css/base.css; uses its tokens (--blue, --cyan, --paper, --line ...) and components (.os-window, .os-tag,
 * .bg-grid, .faq, .btn, .cta-link). Breakpoints as base.css: 1199 (tablet type), 1023 (one column, burger nav),
 * 809 (phone). Square corners, 1px rules, Roboto for words, JetBrains Mono uppercase for labels.
 */

/* ============================================================== shared: page head */

.doc-page { padding-bottom: 120px; }
.ico { width: 14px; height: 14px; flex: none; }

.doc-hero { position: relative; padding-top: 16px; }
.doc-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: 48px 72px;
  padding-bottom: 72px;
  border-bottom: 1px solid var(--line-strong);
}
.doc-hero__text { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: flex-start; max-width: 660px; }

/* mono kicker: tuning fork + page name + date */
.doc-kicker { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 10px; color: var(--blue); font: 500 13px/20px var(--font-mono); letter-spacing: 0.04em; text-transform: uppercase; }
.doc-kicker svg { width: 18px; height: 18px; flex: none; }
.doc-kicker__sep { color: var(--line-strong); }
.doc-kicker__muted { color: var(--muted); }

.doc-title { margin-top: 24px; color: var(--blue); font: 700 clamp(44px, calc(3.2vw + 24px), 80px)/0.99 var(--font-sans); letter-spacing: -0.035em; text-wrap: balance; }
.doc-sub { max-width: 32em; margin-top: 24px; color: var(--ink); font: 400 var(--fs-lead)/1.43 var(--font-sans); letter-spacing: -0.01em; text-wrap: pretty; }
.doc-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 32px; }
.doc-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 28px; }

/* docs: the engine signature and the live universe on graph paper */
.doc-hero__stage { position: relative; display: flex; flex-direction: column; justify-content: center; min-height: 380px; padding: 48px; border: 1px solid var(--line-strong); }
.doc-hero__stage .win-abi { width: min(100%, 480px); }
.doc-hero__stage .win-live { align-self: flex-end; width: min(100%, 290px); margin-top: -14px; }
.win-abi pre { padding-bottom: 24px; font-size: 13px; }

/* security: the etching beside the title */
.doc-hero--art .doc-hero__grid { grid-template-columns: minmax(0, 1fr); min-height: 460px; align-items: end; }
.doc-hero__art { position: absolute; z-index: 0; right: max(var(--page-pad), calc((100vw - var(--container)) / 2)); top: 44%; width: min(54vw, 760px); height: auto; transform: translateY(-50%); pointer-events: none; }

/* ============================================================== shared: live values */

.live { font-family: var(--font-mono); font-variant-numeric: tabular-nums; letter-spacing: 0; }
.live.is-loading { color: var(--muted); animation: live-blink 1.2s steps(2, jump-none) infinite; }
@keyframes live-blink { 50% { opacity: 0.5; } }
.live-note { display: block; margin-top: 12px; padding-top: 10px; border-top: 1px solid var(--line); color: var(--muted); font: 500 10px/14px var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; }
.live-note:empty { display: none; }

.kv { display: grid; grid-template-columns: auto 1fr; align-items: baseline; gap: 10px 16px; margin: 0; }
.kv dt { color: var(--muted); font: 500 11px/16px var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; white-space: nowrap; }
.kv dd { margin: 0; justify-self: end; text-align: right; color: var(--ink); font: 400 15px/1.2 var(--font-mono); font-variant-numeric: tabular-nums; }
.win-live .kv dd { color: var(--blue); font-weight: 500; }

/* ============================================================== shared: two-column body */

.doc-layout { padding-top: 72px; }
.doc-layout__grid { display: grid; grid-template-columns: 232px minmax(0, 920px); align-items: start; gap: 80px; }
.doc-body { position: relative; min-width: 0; }

/* contents: sticky beside the sections; a drop-down bar under 1024 px */
.doc-toc { position: sticky; top: calc(var(--nav-top) + var(--nav-h) + 32px); z-index: 5; }
.doc-toc__head { display: flex; justify-content: space-between; gap: 12px; padding-bottom: 12px; border-bottom: 1px solid var(--line-strong); color: var(--muted); font: 500 11px/16px var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; }
.doc-toc__count { color: var(--blue); font-variant-numeric: tabular-nums; }
.doc-toc__bar-btn { display: none; }
.doc-toc__list { display: flex; flex-direction: column; margin: 14px 0 0; padding: 0; list-style: none; }
.doc-toc__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 7px 0 7px 14px;
  border-left: 1px solid var(--line-strong);
  color: var(--ink);
  font: 500 12px/18px var(--font-mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color 0.15s, border-color 0.15s;
}
.doc-toc__link span { flex: none; color: var(--muted); font-variant-numeric: tabular-nums; transition: color 0.15s; }
.doc-toc__link:hover { color: var(--blue); }
.doc-toc__link[aria-current='true'] { padding-left: 13px; border-left: 2px solid var(--blue); color: var(--blue); }
.doc-toc__link[aria-current='true'] span { color: var(--blue); }
.doc-toc__progress { position: relative; height: 2px; margin-top: 18px; background: var(--line); }
.doc-toc__progress i { position: absolute; left: 0; top: 0; bottom: 0; width: 0; background: var(--blue); }

/* ============================================================== shared: numbered sections and prose */

.doc-sec { scroll-margin-top: 16px; }
.doc-sec + .doc-sec { margin-top: 104px; }
.doc-sec__head { display: flex; align-items: baseline; gap: 18px; margin-bottom: 28px; padding-top: 22px; border-top: 1px solid var(--line-strong); }
.doc-sec__num { flex: none; color: var(--blue); font: 500 14px/20px var(--font-mono); font-variant-numeric: tabular-nums; }
.doc-h2 { color: var(--blue); font: 700 clamp(32px, calc(1.3vw + 22px), 48px)/1.04 var(--font-sans); letter-spacing: -0.03em; text-wrap: balance; }
.doc-h3 { margin-top: 56px; color: var(--ink); font: 500 var(--fs-h4)/1.2 var(--font-sans); letter-spacing: -0.01em; }
.doc-h3 + * { margin-top: 14px !important; }

.prose { color: var(--ink); font: 400 17px/1.65 var(--font-sans); }
.doc-sec > p, .doc-sec > .doc-list, .doc-sec > .doc-checks:not(.sec-cannot) { max-width: 68ch; }
.doc-sec > p { margin-top: 20px; text-wrap: pretty; }
.doc-sec__head + p { margin-top: 0; }
.prose strong, .prose b { color: var(--ink); font-weight: 600; }
.prose em { font-style: italic; }
.prose a:not(.btn):not(.cta-link):not(.doc-card) {
  color: var(--blue);
  text-decoration: underline 1px;
  text-decoration-color: color-mix(in srgb, var(--blue) 45%, transparent);
  text-underline-offset: 4px;
  transition: text-decoration-color 0.15s, color 0.15s;
}
.prose a:not(.btn):not(.cta-link):not(.doc-card):hover { color: var(--blue-hover); text-decoration-color: currentColor; }
.prose :not(pre) > code { padding: 1px 5px; background: var(--blue-08); color: #0d2f66; font: 400 0.84em/1 var(--font-mono); letter-spacing: 0; font-variant-ligatures: none; overflow-wrap: anywhere; }

/* lists: blue squares, mono step numbers */
.doc-list { display: flex; flex-direction: column; gap: 12px; margin-top: 20px; padding: 0; list-style: none; }
.doc-list > li { position: relative; padding-left: 26px; }
ul.doc-list > li::before { content: ''; position: absolute; left: 4px; top: 0.68em; width: 6px; height: 6px; background: var(--blue); }
ol.doc-list { counter-reset: step; }
ol.doc-list > li { padding-left: 42px; counter-increment: step; }
ol.doc-list > li::before { content: counter(step, decimal-leading-zero); position: absolute; left: 0; top: 0.24em; color: var(--blue); font: 500 13px/20px var(--font-mono); }

/* checked statements and things that cannot happen */
.doc-checks { margin-top: 24px; padding: 0; list-style: none; border-top: 1px solid var(--line-strong); }
.doc-checks > li { position: relative; padding: 14px 0 14px 34px; border-bottom: 1px solid var(--line); }
.doc-checks > li::before {
  content: '';
  position: absolute;
  left: 2px;
  top: calc(14px + (1.65em - 18px) / 2);
  width: 18px;
  height: 18px;
  background: var(--blue);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18'%3E%3Cpath d='M3.5 9.5l3.5 3.5 7.5-8' fill='none' stroke='black' stroke-width='1.8'/%3E%3C/svg%3E") center / contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18'%3E%3Cpath d='M3.5 9.5l3.5 3.5 7.5-8' fill='none' stroke='black' stroke-width='1.8'/%3E%3C/svg%3E") center / contain no-repeat;
}
.doc-checks--no > li::before {
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18'%3E%3Cpath d='M4.5 4.5l9 9M13.5 4.5l-9 9' fill='none' stroke='black' stroke-width='1.8'/%3E%3C/svg%3E");
          mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 18 18'%3E%3Cpath d='M4.5 4.5l9 9M13.5 4.5l-9 9' fill='none' stroke='black' stroke-width='1.8'/%3E%3C/svg%3E");
}
.sec-cannot { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 32px; }

/* where to start: four link cards */
.doc-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.doc-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  padding: 20px 22px 22px;
  background: var(--white);
  border: 1px solid var(--line-strong);
  color: var(--ink);
  transition: border-color 0.15s, translate 0.2s var(--ease);
}
.doc-card:hover { border-color: var(--blue); translate: 0 -2px; }
.doc-card__label { color: var(--blue); font: 500 12px/16px var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; }
.doc-card__label::after { content: ' \2192'; }
.doc-card__text { font: 400 16px/1.5 var(--font-sans); }

/* callout: white with a blue left rule */
.doc-callout { max-width: 68ch; margin-top: 28px; padding: 20px 24px 22px; background: var(--white); border: 1px solid var(--line); border-left: 2px solid var(--blue); }
.doc-callout__label { margin-bottom: 8px; color: var(--blue); font: 500 11px/16px var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; }
.doc-callout > p + p { margin-top: 10px; }
.doc-callout .doc-list { margin-top: 4px; }
.doc-callout--cta { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px 48px; max-width: none; padding: 28px 32px; }
.doc-callout--cta p { max-width: 46ch; }
.doc-callout--cta .cta-link { flex: none; }

/* ============================================================== shared: figures on graph paper */

.doc-fig { margin: 32px 0 0; padding: 32px; border: 1px solid var(--line-strong); }
.doc-fig__cap { margin-top: 16px; color: var(--muted); font: 400 14px/1.5 var(--font-sans); }
.doc-sec > .os-window { margin-top: 28px; }

/* how a cycle works: a vertical flow of five steps */
.doc-flow { display: flex; flex-direction: column; margin: 0; padding: 0; list-style: none; }
.doc-flow__step {
  position: relative;
  display: grid;
  grid-template-columns: 116px 150px minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 20px;
  padding: 18px 22px;
  background: var(--white);
  border: 1px solid var(--line-strong);
}
.doc-flow__step + .doc-flow__step { margin-top: 30px; }
.doc-flow__step + .doc-flow__step::before {
  content: '';
  position: absolute;
  left: 40px;
  top: -30px;
  width: 10px;
  height: 30px;
  background: var(--blue);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 30'%3E%3Cpath d='M4.5 2h1v19h3.5L5 28 1 21h3.5z'/%3E%3C/svg%3E") center / 10px 30px no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 30'%3E%3Cpath d='M4.5 2h1v19h3.5L5 28 1 21h3.5z'/%3E%3C/svg%3E") center / 10px 30px no-repeat;
}
.doc-flow__n { color: var(--blue); font: 500 12px/16px var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; }
.doc-flow__big { color: var(--ink); font: 500 22px/1.2 var(--font-sans); letter-spacing: -0.01em; }
.doc-flow__txt { color: var(--ink); font: 400 15px/1.5 var(--font-sans); }
.doc-flow__step--end { background: var(--blue); border-color: var(--blue); }
.doc-flow__step--end .doc-flow__n { color: var(--cyan); }
.doc-flow__step--end .doc-flow__big, .doc-flow__step--end .doc-flow__txt { color: var(--white); }

/* figures: a row of big numbers */
.doc-stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin: 0; background: var(--line-strong); border: 1px solid var(--line-strong); }
.doc-stats--5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.doc-stat { min-width: 0; padding: 20px 20px 22px; background: var(--white); }
.doc-stat dt { color: var(--muted); font: 500 11px/16px var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; }
.doc-stat dd { margin: 0; }
.doc-stat__v { display: block; margin-top: 20px; color: var(--blue); font: 700 clamp(40px, calc(1.6vw + 24px), 56px)/1 var(--font-sans); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.doc-stat__s { display: block; margin-top: 10px; color: var(--ink); font: 400 14px/1.45 var(--font-sans); }
.doc-stat--warn .doc-stat__v { color: var(--red-text); }

/* two windows side by side */
.doc-grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; gap: 20px; }

/* ============================================================== shared: code windows */

.os-window--dark .os-window__meta { color: var(--cyan); }
.code-win .os-window__bar { gap: 12px; }
.code-win__copy {
  flex: none;
  margin-left: auto;
  padding: 2px 8px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--white);
  font: 500 11px/16px var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: background-color 0.15s, color 0.15s, border-color 0.15s;
}
.code-win__copy:hover { background: var(--white); border-color: var(--white); color: var(--blue); }
.code-win pre {
  margin: 0;
  padding: 18px 20px 20px;
  overflow-x: auto;
  color: #e8eef8;
  font: 400 13px/1.7 var(--font-mono);
  letter-spacing: 0;
  font-variant-ligatures: none;
  tab-size: 2;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.28) transparent;
}
.code-win code { font: inherit; white-space: pre; }
.code-win .c { color: rgba(232, 238, 248, 0.58); }
.code-win .k { color: var(--cyan); }
.code-win .s { color: #b9f3c9; }
.code-win .f { color: var(--white); font-weight: 600; }
.prose .code-win { margin-top: 28px; }
.prose details.code-win { margin-top: 12px; }
.code-win > summary { list-style: none; cursor: pointer; }
.code-win > summary::-webkit-details-marker { display: none; }
.code-win > summary::marker { content: ''; }
.code-win > summary:hover .os-window__meta { text-decoration: underline 1px; text-underline-offset: 3px; }
.code-win__hide { display: none; }
.code-win[open] .code-win__show { display: none; }
.code-win[open] .code-win__hide { display: inline; }

/* ============================================================== shared: tables */

.table-win .os-window__body { padding: 0; }
.table-scroll { overflow-x: auto; scrollbar-width: thin; }
.doc-table { width: 100%; color: var(--ink); font: 400 15px/1.5 var(--font-sans); }
.doc-table th {
  padding: 12px 16px 10px;
  background: #fbfbfb;
  border-bottom: 1px solid var(--line-strong);
  color: var(--muted);
  font: 500 11px/16px var(--font-mono);
  letter-spacing: 0.06em;
  text-align: left;
  text-transform: uppercase;
  vertical-align: bottom;
  white-space: nowrap;
}
.doc-table td { padding: 12px 16px; border-top: 1px solid var(--line); vertical-align: top; }
.doc-table tbody tr:first-child td { border-top: 0; }
.doc-table td.num, .doc-table td.mono { font: 400 13.5px/1.6 var(--font-mono); letter-spacing: 0; font-variant-numeric: tabular-nums; font-variant-ligatures: none; white-space: nowrap; }
.doc-table .num { text-align: right; }
.doc-table .nowrap { white-space: nowrap !important; overflow-wrap: normal !important; }
.doc-table .id { width: 1%; color: var(--blue); font: 500 13px/1.6 var(--font-mono); white-space: nowrap; }
.doc-table .key { width: 1%; padding-right: 8px; color: var(--muted); font: 500 11px/23px var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; white-space: nowrap; }
.doc-table .lead-cell { font-weight: 500; }
.doc-table .lead-cell strong { font-weight: 500; }
.doc-table td.muted { color: var(--muted); font-size: 14px; }
.doc-table .res { width: 1%; white-space: nowrap; }
.doc-table .stock { display: inline-flex; align-items: center; gap: 8px; font: 500 15px/1 var(--font-sans); white-space: nowrap; }
.doc-table .stock img { width: 22px; height: 22px; border-radius: 50%; }
.doc-table .sub { display: block; margin-top: 6px; color: var(--muted); font: 400 13px/1.4 var(--font-sans); }
.doc-table tr.is-total td { border-top: 1px solid var(--line-strong); color: var(--blue); font-weight: 500; }
.doc-table--matrix td:first-child { color: var(--muted); }
.doc-table--matrix .is-hit { background: var(--cyan); color: var(--ink); font-weight: 500; }
.doc-table--fork td.mono { min-width: 220px; white-space: normal; }
/* invariants: one row per invariant (id, statement, result), then how it is enforced and checked side by side */
.doc-table--rows thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.doc-table--rows, .doc-table--rows tbody { display: block; }
.doc-table--rows tr { display: grid; grid-template-columns: 52px minmax(0, 1fr) minmax(0, 1fr) auto; align-items: start; gap: 6px 24px; padding: 18px 20px 20px; border-top: 1px solid var(--line); }
.doc-table--rows tbody tr:first-child { border-top: 0; }
.doc-table--rows td { padding: 0; border: 0 !important; }
.doc-table--rows td.id { grid-column: 1; grid-row: 1; width: auto; }
.doc-table--rows td.lead-cell { grid-column: 2 / 4; grid-row: 1; font-size: 16px; }
.doc-table--rows td.res { grid-column: 4; grid-row: 1; width: auto; }
.doc-table--rows td.enf { grid-column: 2; grid-row: 2; }
.doc-table--rows td.chk { grid-column: 3; grid-row: 2; overflow-wrap: anywhere; }
.doc-table--rows td[data-label]::before { content: attr(data-label); display: block; margin: 8px 0 4px; color: var(--muted); font: 500 10px/14px var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; }
.table-foot { margin: 0; padding: 12px 16px 14px; border-top: 1px solid var(--line); color: var(--muted); font: 400 13px/1.5 var(--font-sans); }
.show-sm { display: none !important; }

/* status chips (results, risk kinds, engine state) */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 2px 7px;
  box-shadow: inset 0 0 0 1px currentColor;
  color: var(--muted);
  font: 500 11px/16px var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
  vertical-align: 1px;
}
.chip--ok { background: rgba(97, 162, 50, 0.1); color: var(--green-text); }
.chip--grey { color: var(--muted); }
.chip--pink { background: var(--cyan); box-shadow: none; color: var(--ink); }
.chip--warn, .chip--magenta { background: rgba(198, 40, 40, 0.06); color: var(--red-text); }
.chip--line { color: var(--ink); }

/* FAQ and glossary */
.doc-faq { max-width: none; margin-top: 4px; }
.doc-gloss { display: grid; grid-template-columns: 210px minmax(0, 1fr); margin: 0; border-top: 1px solid var(--line-strong); }
.doc-gloss dt, .doc-gloss dd { padding: 14px 0; border-bottom: 1px solid var(--line); }
.doc-gloss dt { padding-right: 20px; color: var(--blue); font: 500 16px/1.55 var(--font-sans); }
.doc-gloss dd { margin: 0; font-size: 16px; line-height: 1.55; }

/* ============================================================== /security */

.sec-risks { display: flex; flex-direction: column; margin: 0; padding: 0; list-style: none; background: var(--white); border: 1px solid var(--line-strong); }
.sec-risk { padding: 22px 24px 24px; border-top: 1px solid var(--line); }
.sec-risk:first-child { border-top: 0; }
.sec-risk__head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 16px; }
.sec-risk__id { flex: none; width: 56px; color: var(--blue); font: 500 13px/20px var(--font-mono); }
.sec-risk__title { flex: 1 1 240px; color: var(--ink); font: 500 20px/1.3 var(--font-sans); letter-spacing: -0.01em; }
.sec-risk__head .chip { flex: none; align-self: center; }
.sec-risk p { max-width: 64ch; margin-top: 8px; padding-left: 72px; color: #3a3a3a; font: 400 16px/1.6 var(--font-sans); }

ol.sec-steps { --grain: 0.65; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 0; padding: 40px 32px 44px; background: var(--cyan); list-style: none; }
.sec-step { display: flex; flex-direction: column; padding: 0 24px; border-left: 1px solid rgba(23, 23, 23, 0.25); }
.sec-step:first-child { padding-left: 0; border-left: 0; }
.sec-step__num { color: rgba(23, 23, 23, 0.6); font: 500 var(--fs-h4)/1.15 var(--font-sans); }
.sec-step__title { margin-top: 24px; color: var(--blue); font: 500 var(--fs-h4)/1.15 var(--font-sans); letter-spacing: -0.01em; }
.sec-step p { margin-top: 10px; color: var(--ink); font: 400 16px/1.55 var(--font-sans); }

/* ============================================================== /deck: page */

.deck-page { padding-bottom: 120px; }
.deck-head { padding-top: 16px; }
.deck-head__grid { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 28px 48px; padding-bottom: 40px; border-bottom: 1px solid var(--line-strong); }
.deck-head__title { margin-top: 22px; color: var(--blue); font: 700 clamp(40px, calc(3vw + 22px), 72px)/1 var(--font-sans); letter-spacing: -0.035em; text-wrap: balance; }
.deck-head__sub { max-width: 34em; margin-top: 20px; color: var(--ink); font: 400 var(--fs-lead)/1.43 var(--font-sans); letter-spacing: -0.01em; }
.deck-head__actions { display: flex; flex-wrap: wrap; gap: 8px; }
.deck-head__keys { grid-column: 1 / -1; color: var(--muted); font: 500 11px/22px var(--font-mono); letter-spacing: 0.04em; text-transform: uppercase; }
.kbd { display: inline-flex; align-items: center; justify-content: center; min-width: 22px; height: 20px; margin: 0 1px; padding: 0 5px; background: var(--white); border: 1px solid var(--line-strong); color: var(--ink); font: 500 11px/1 var(--font-mono); vertical-align: 1px; }

.deck-stage { padding-top: 56px; }
.deck { --s: 0.9219; display: flex; flex-direction: column; align-items: center; gap: 40px; max-width: 1180px; margin: 0 auto; touch-action: pan-y; }
.deck-frame {
  position: relative;
  width: calc(1280px * var(--s));
  height: calc(720px * var(--s));
  overflow: hidden;
  outline: 1px solid var(--line-strong);
  box-shadow: 0 30px 60px -40px rgba(3, 67, 155, 0.5);
  scroll-margin-top: calc(var(--nav-top) + var(--nav-h) + 16px);
  touch-action: pan-y;
  transition: outline-color 0.2s;
}
.deck-frame.is-current { outline-color: var(--blue); }
.deck-frame:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }

/* ============================================================== /deck: one slide, a 1280 x 720 stage scaled to the frame */

.slide {
  --fg: var(--ink);
  --fg-2: #3a3a3a;
  --h: var(--blue);
  --accent: var(--blue);
  --rule: var(--line-strong);
  position: absolute;
  left: 0;
  top: 0;
  display: flex;
  flex-direction: column;
  width: 1280px;
  height: 720px;
  padding: 64px 80px 108px;
  overflow: hidden;
  transform: scale(var(--s));
  transform-origin: 0 0;
  isolation: isolate;
  background: var(--paper);
  color: var(--fg);
  font: 400 20px/1.45 var(--font-sans);
}
.slide > * { position: relative; z-index: 1; }

/* grounds */
.slide--paper { background: var(--paper); }
.slide--grid { background-color: var(--paper); background-image: linear-gradient(90deg, var(--blue-08) 1px, transparent 1px), linear-gradient(var(--blue-08) 1px, transparent 1px); background-size: 32px 32px; }
.slide--cyan { --fg-2: rgba(23, 23, 23, 0.82); --rule: rgba(23, 23, 23, 0.25); background: var(--cyan); }
.slide--blue { --fg: var(--white); --fg-2: rgba(255, 255, 255, 0.86); --h: var(--white); --accent: var(--cyan); --rule: rgba(255, 255, 255, 0.24); background: var(--blue); }
.slide--cyan::before, .slide--blue::before { content: ''; position: absolute; inset: 0; z-index: 0; pointer-events: none; mix-blend-mode: overlay; opacity: 0.65; background: url('/img/art/noise.webp?v=2') 0 0 / 404px; }
.slide--blue::before { opacity: 0.2; }
.slide--photo { --fg: var(--white); --fg-2: rgba(255, 255, 255, 0.9); --h: var(--white); --accent: var(--cyan); --rule: rgba(255, 255, 255, 0.28); background: var(--blue); }
.slide > .slide__photo, .slide > .slide__shade, .slide > .slide__side, .slide > .slide__etching { position: absolute; z-index: 0; }
.slide__photo { inset: 0; width: 100%; height: 100%; object-fit: cover; }
.slide__shade { inset: 0; pointer-events: none; background: linear-gradient(to right, var(--blue) 10%, color-mix(in oklab, var(--blue) 70%, transparent) 35%, transparent 65%); }
.slide--hero, .slide--end { justify-content: flex-end; }
.slide--hero .slide__photo { object-position: 62% 50%; }
.slide--end .slide__photo { object-position: 85% 50%; }
.slide--end .slide__h { color: var(--cyan); }
.slide--photo-right .slide__shade { background: linear-gradient(to right, var(--blue) 8%, color-mix(in oklab, var(--blue) 72%, transparent) 46%, color-mix(in oklab, var(--blue) 30%, transparent) 100%), linear-gradient(to top, color-mix(in oklab, var(--blue) 70%, transparent), transparent 55%); }

/* type */
.slide__eyebrow { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; color: var(--accent); font: 500 14px/20px var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; }
.slide__eyebrow::before { content: ''; width: 20px; height: 1px; background: currentColor; }
.slide__h { max-width: 1040px; color: var(--h); font: 700 60px/1.02 var(--font-sans); letter-spacing: -0.035em; text-wrap: balance; }
.slide__h--xl { font-size: 104px; line-height: 0.96; letter-spacing: -0.04em; }
.slide__lead { max-width: 760px; margin-top: 28px; color: var(--fg-2); font: 400 24px/1.4 var(--font-sans); letter-spacing: -0.01em; text-wrap: pretty; }
.slide__note { max-width: 1000px; margin-top: auto; padding-top: 20px; color: var(--fg-2); font: 400 15px/1.45 var(--font-sans); }
.slide__foot { position: absolute; left: 80px; right: 80px; bottom: 36px; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-top: 16px; border-top: 1px solid var(--rule); }
.slide__brand { display: inline-flex; align-items: center; gap: 10px; color: var(--h); font: 700 18px/1 var(--font-sans); letter-spacing: -0.02em; }
.slide__brand img { width: 22px; height: 22px; }
.slide__num { flex: none; color: var(--fg-2); font: 500 13px/1 var(--font-mono); letter-spacing: 0.06em; font-variant-numeric: tabular-nums; white-space: nowrap; }

/* windows and tags inside slides */
.slide .os-window { color: var(--ink); }
.slide .os-window__bar { min-height: 40px; font-size: 12px; }
.slide .os-window__body { padding: 16px 20px 18px; font: 400 19px/1.45 var(--font-sans); }
.slide .os-window__body strong { font-weight: 600; }
.slide .os-window--dark .os-window__body { color: #e8eef8; }
.slide .os-window--pink .os-window__body { background: color-mix(in srgb, var(--cyan) 35%, var(--white)); }
.slide .os-tag { padding: 4px 9px; background: var(--white); font-size: 13px; line-height: 18px; }
.slide__cols { display: grid; gap: 20px; margin-top: 40px; }
.slide__cols--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

/* numbered columns (problem, quotes) */
.slide-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 52px 0 0; padding: 0; list-style: none; }
.slide-step { display: flex; flex-direction: column; padding: 0 32px; border-left: 1px solid var(--rule); }
.slide-step:first-child { padding-left: 0; border-left: 0; }
.slide-step__num { color: var(--accent); font: 500 15px/20px var(--font-mono); }
.slide-step__title { margin-top: 14px; color: var(--h); font: 500 30px/1.15 var(--font-sans); letter-spacing: -0.015em; }
.slide-step__text { margin-top: 12px; color: var(--fg); font: 400 19px/1.5 var(--font-sans); }
.slide-step__text strong { font-weight: 600; }
.slide-steps--icons { margin-top: 28px; }
.slide-step__icon { width: 190px; height: auto; aspect-ratio: 360 / 280; margin-bottom: 16px; }
.slide--cyan .slide-step__num { color: rgba(23, 23, 23, 0.72); }

/* live numbers (slide 3) */
.slide-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin-top: 48px; }
.slide-card { display: flex; flex-direction: column; min-width: 0; padding: 24px 24px 26px; background: var(--white); box-shadow: 0 1px 0 var(--ink); }
.slide-card__label { color: var(--ink); font: 700 13px/18px var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; }
.slide-stat { display: block; margin-top: 28px; color: var(--blue); font: 700 60px/1 var(--font-sans); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; white-space: nowrap; }
.slide-stat.live { font-family: var(--font-sans); letter-spacing: -0.03em; }
.slide-stat.live.is-loading { color: var(--muted); font-size: 36px; }
.slide-cap { margin-top: 10px; color: var(--ink); font: 400 16px/1.4 var(--font-sans); }
.deck-best { margin-top: 24px; }
.deck-best .os-window__body { padding: 14px 18px; font: 400 17px/1.5 var(--font-mono); }
.deck-best .live.is-loading { color: rgba(232, 238, 248, 0.7); }

/* the cycle (slide 4) */
.cycle { display: grid; grid-template-columns: minmax(0, 1fr) 96px minmax(0, 1fr) 96px minmax(0, 1fr); align-items: center; margin-top: auto; padding-top: 40px; }
.cycle .os-window__body { min-height: 176px; font-size: 20px; }
.cycle__arrow { display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--blue); font: 500 13px/1 var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; }
.cycle__arrow svg { width: 44px; height: 16px; }
.cycle-strip { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 40px; margin-bottom: auto; }

/* manual vs flash (slide 5) */
.versus { max-width: 1120px; }
.versus .os-window__body { min-height: 216px; font: 400 16px/1.55 var(--font-mono); }
.versus ol { display: flex; flex-direction: column; gap: 8px; margin: 0; padding: 0; list-style: none; }
.versus li { display: flex; gap: 12px; }
.versus li b { flex: none; min-width: 18px; color: var(--blue); font-weight: 500; }
.versus .os-window--dark li b { color: var(--cyan); }

/* fees (slide 7) */
.slide-figures { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; margin: 52px 0 0; background: var(--line-strong); border: 1px solid var(--line-strong); }
.slide-figure { min-width: 0; padding: 26px 28px 30px; background: var(--white); }
.slide-figure dt { color: var(--muted); font: 500 13px/18px var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; }
.slide-figure dd { margin: 0; }
.slide-figure__v { display: block; margin-top: 32px; color: var(--blue); font: 700 84px/1 var(--font-sans); letter-spacing: -0.045em; font-variant-numeric: tabular-nums; }
.slide-figure__s { display: block; margin-top: 14px; color: var(--ink); font: 400 18px/1.4 var(--font-sans); }
.slide-figure--blue { background: var(--blue); }
.slide-figure--blue dt { color: rgba(255, 255, 255, 0.78); }
.slide-figure--blue .slide-figure__v, .slide-figure--blue .slide-figure__s { color: var(--white); }

/* why robinhood chain (slide 8): content left, photo panel right */
.slide--split { padding-right: 600px; }
.slide--split .slide__foot { right: 600px; }
.slide__side { top: 0; right: 0; bottom: 0; width: 520px; overflow: hidden; background: var(--blue); }
.slide__side img { width: 100%; height: 100%; object-fit: cover; object-position: 90% 50%; }
.slide__side::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to right, color-mix(in oklab, var(--blue) 40%, transparent), transparent 45%); }
.slide-grid4 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 40px; border-top: 1px solid var(--rule); }
.slide-mini { padding: 20px 24px 22px 0; border-bottom: 1px solid var(--rule); }
.slide-mini:nth-child(2n) { padding-left: 24px; padding-right: 0; border-left: 1px solid var(--rule); }
.slide-mini__title { color: var(--blue); font: 500 24px/1.2 var(--font-sans); letter-spacing: -0.01em; }
.slide-mini p { margin-top: 8px; color: var(--fg); font: 400 17px/1.5 var(--font-sans); }

/* safety (slide 9) */
.deck-list { display: flex; flex-direction: column; gap: 10px; margin: 0; padding: 0; list-style: none; }
.deck-list li { position: relative; padding-left: 22px; }
.deck-list li::before { content: ''; position: absolute; left: 2px; top: 0.62em; width: 6px; height: 6px; background: var(--blue); }
.slide .kv { gap: 14px 20px; }
.slide .kv dt { font-size: 13px; line-height: 22px; }
.slide .kv dd { color: var(--blue); font-size: 19px; font-weight: 500; white-space: nowrap; }

/* roadmap (slide 10) */
.slide-notes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 40px; }
.slide-note { display: flex; flex-direction: column; padding: 14px 14px 20px; background: var(--white); border: 1px solid var(--line); }
.slide-note__img { display: block; aspect-ratio: 2 / 1; overflow: hidden; background: var(--blue); }
.slide-note__img img { width: 100%; height: 100%; object-fit: cover; }
.slide-note__meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--line); color: var(--blue); font: 500 24px/1.2 var(--font-sans); letter-spacing: -0.01em; }
.slide-note p { margin-top: 12px; color: var(--ink); font: 400 17px/1.45 var(--font-sans); }

/* the coin (slide 11) */
.slide--token .slide__etching { right: -32px; bottom: 60px; width: 640px; height: auto; }
.slide--token .slide__lead { max-width: 620px; }
.token-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.token-row .btn { min-height: 52px; padding: 14px 20px; font-size: 16px; }
.token-row .btn[aria-disabled='true'], .token-row .btn:disabled { background: rgba(255, 255, 255, 0.72); box-shadow: inset 0 0 0 1px rgba(23, 23, 23, 0.3); color: var(--ink); }
.token-row .ts-soon { margin-left: 8px; }

/* links (slide 12) */
.slide-links { display: flex; flex-wrap: wrap; gap: 8px 48px; margin-top: 40px; }
.slide-links .cta-link { font-size: 44px; }

/* ============================================================== /deck: dock and present mode */

.deck-dock {
  position: fixed;
  right: var(--page-pad);
  bottom: 24px;
  z-index: 40;
  display: flex;
  align-items: stretch;
  background: var(--white);
  border: 1px solid var(--line-strong);
  box-shadow: 0 18px 40px -24px rgba(3, 67, 155, 0.5);
  color: var(--ink);
}
.deck-dock { transition: opacity 0.2s var(--ease), translate 0.2s var(--ease), visibility 0.2s; }
.deck-dock.is-away { opacity: 0; translate: 0 8px; pointer-events: none; visibility: hidden; }
.deck-dock__btn { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-left: 1px solid var(--line); color: var(--blue); transition: background-color 0.15s, color 0.15s; }
.deck-dock__btn:first-child { border-left: 0; }
.deck-dock__btn:not(:disabled):hover { background: var(--blue-08); }
.deck-dock__btn:disabled { color: #b8b8b8; cursor: default; }
.deck-dock__btn svg { width: 14px; height: 14px; }
.deck-dock__count { display: inline-flex; align-items: center; justify-content: center; min-width: 84px; padding: 0 12px; border-left: 1px solid var(--line); color: var(--ink); font: 500 13px/1 var(--font-mono); letter-spacing: 0.04em; font-variant-numeric: tabular-nums; }

.deck-present { --s: 1; position: fixed; inset: 0; z-index: 90; display: flex; align-items: center; justify-content: center; background: var(--blue-deep); touch-action: pan-y; }
.deck-present[hidden] { display: none; }
.deck-present__stage { position: relative; width: calc(1280px * var(--s)); height: calc(720px * var(--s)); margin-bottom: 56px; overflow: hidden; box-shadow: 0 40px 80px -40px rgba(0, 0, 0, 0.6); }
.deck-present__bar { position: absolute; left: 0; right: 0; bottom: 0; z-index: 3; display: flex; justify-content: center; padding: 14px; pointer-events: none; }
.deck-present__bar .deck-dock { position: relative; right: auto; bottom: auto; pointer-events: auto; }
.deck-present__hint { position: absolute; top: 14px; left: 50%; z-index: 3; transform: translateX(-50%); color: rgba(255, 255, 255, 0.72); font: 500 11px/16px var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; white-space: nowrap; }
.deck-present__stage .slide { animation: slide-in 0.28s var(--ease) both; }
.deck-present__stage .slide.from-left { animation-name: slide-in-left; }
@keyframes slide-in { from { opacity: 0.001; transform: translateX(24px) scale(var(--s)); } to { opacity: 1; transform: scale(var(--s)); } }
@keyframes slide-in-left { from { opacity: 0.001; transform: translateX(-24px) scale(var(--s)); } to { opacity: 1; transform: scale(var(--s)); } }
html.is-presenting, html.is-presenting body { overflow: hidden; }

/* ============================================================== breakpoints */

@media (max-width: 1279px) {
  .doc-layout__grid { grid-template-columns: 208px minmax(0, 1fr); gap: 56px; }
  .doc-hero__stage { padding: 36px; }
  .doc-stats--5 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .doc-stats--5 .doc-stat:last-child { grid-column: 1 / -1; }
  .doc-flow__step { grid-template-columns: 110px minmax(0, 1fr); }
  .doc-flow__txt { grid-column: 2; }
}

@media (max-width: 1199px) {
  ol.sec-steps { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .sec-step { padding: 0; border-left: 0; }
  .sec-step__title { margin-top: 8px; }
}

/* one column: the contents become a sticky drop-down bar under the floating nav */
@media (max-width: 1023px) {
  .doc-hero__grid { grid-template-columns: minmax(0, 1fr); gap: 48px; padding-bottom: 56px; }
  .doc-hero--art .doc-hero__grid { min-height: 0; }
  .doc-hero__art { position: relative; right: auto; top: auto; display: block; width: 100%; max-width: 640px; margin: 0 auto 8px; transform: none; }
  .doc-hero__text { max-width: none; }
  .doc-layout { padding-top: 40px; }
  .doc-layout__grid { display: block; }
  .doc-sec { scroll-margin-top: 72px; }
  .doc-toc { top: calc(var(--nav-top) + var(--nav-h) + 8px); margin-bottom: 48px; }
  .doc-toc__head { display: none; }
  .doc-toc__bar-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
    min-height: 48px;
    padding: 0 16px;
    background: var(--white);
    border: 1px solid var(--line-strong);
    box-shadow: 0 12px 24px -20px rgba(3, 67, 155, 0.45);
    color: var(--ink);
    font: 500 12px/18px var(--font-mono);
    letter-spacing: 0.04em;
    text-align: left;
    text-transform: uppercase;
  }
  .doc-toc__bar-btn b { margin-right: 6px; color: var(--blue); font-weight: 500; }
  .doc-toc__bar-btn > span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .doc-toc__bar-btn svg { width: 14px; height: 14px; flex: none; color: var(--blue); transition: transform 0.2s var(--ease); }
  .doc-toc.is-open .doc-toc__bar-btn svg { transform: rotate(180deg); }
  .doc-toc__panel {
    position: absolute;
    left: 0;
    right: 0;
    top: calc(100% + 6px);
    display: none;
    max-height: calc(100dvh - var(--nav-top) - var(--nav-h) - 80px);
    padding: 6px 16px 14px;
    overflow-y: auto;
    background: var(--white);
    border: 1px solid var(--line-strong);
    box-shadow: 0 24px 48px -24px rgba(3, 67, 155, 0.4);
  }
  .doc-toc.is-open .doc-toc__panel { display: block; }
  .doc-toc__list { margin-top: 6px; }
  .doc-toc__link { padding-block: 10px; }

  .deck-head__grid { grid-template-columns: minmax(0, 1fr); }
}

/* phones */
@media (max-width: 809px) {
  .doc-page, .deck-page { padding-bottom: 88px; }
  .doc-hero__stage { min-height: 0; padding: 20px 16px; margin-inline: calc(-1 * var(--page-pad)); border-inline: 0; }
  .doc-hero__stage .win-live { margin-top: -16px; }
  .win-abi pre { padding: 14px 14px 16px; font-size: 11.5px; }
  .doc-title { margin-top: 18px; }
  .doc-sub { margin-top: 18px; }

  .doc-sec + .doc-sec { margin-top: 80px; }
  .doc-sec__head { gap: 12px; margin-bottom: 22px; padding-top: 18px; }
  .doc-h3 { margin-top: 44px; }
  .doc-cards { grid-template-columns: minmax(0, 1fr); }
  .sec-cannot { grid-template-columns: minmax(0, 1fr); }
  .doc-fig { margin-inline: calc(-1 * var(--page-pad)); padding: 16px; border-inline: 0; }
  .doc-flow__step { grid-template-columns: minmax(0, 1fr); padding: 16px 18px; }
  .doc-flow__txt { grid-column: auto; }
  .doc-flow__step + .doc-flow__step { margin-top: 26px; }
  .doc-flow__step + .doc-flow__step::before { left: 24px; top: -26px; height: 26px; }
  .doc-stats, .doc-stats--5 { grid-template-columns: minmax(0, 1fr); }
  .doc-stats--5 .doc-stat:last-child { grid-column: auto; }
  .doc-stat { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; column-gap: 16px; padding: 14px 16px; }
  .doc-stat dd { display: contents; }
  .doc-stat__v { grid-column: 2; grid-row: 1 / span 2; margin-top: 0; font-size: 36px; }
  .doc-stat__s { grid-column: 1; margin-top: 4px; }
  .doc-grid2 { grid-template-columns: minmax(0, 1fr); }
  .doc-gloss { grid-template-columns: minmax(0, 1fr); }
  .doc-gloss dt { padding-bottom: 2px; border-bottom: 0; }
  .doc-gloss dd { padding-top: 2px; }
  .doc-callout { padding: 18px 18px 20px; }
  .doc-callout--cta { padding: 22px 20px; }
  .code-win pre { padding: 14px 14px 16px; font-size: 12px; }
  .doc-table { font-size: 14px; }
  .doc-table th, .doc-table td { padding-inline: 12px; }
  .doc-table .mono { white-space: normal; overflow-wrap: anywhere; }
  .show-sm { display: block !important; }
  .hide-sm { display: none !important; }

  .doc-table--rows tr { grid-template-columns: auto minmax(0, 1fr) auto; gap: 2px 10px; padding: 14px 14px 16px; }
  .doc-table--rows td.lead-cell { grid-column: 2; font-size: 15px; }
  .doc-table--rows td.res { grid-column: 3; }
  .doc-table--rows td.enf { grid-column: 1 / -1; grid-row: 2; }
  .doc-table--rows td.chk { grid-column: 1 / -1; grid-row: 3; }

  /* long tables: one card per row */
  .doc-table--stack thead { display: none; }
  .doc-table--stack, .doc-table--stack tbody, .doc-table--stack tr, .doc-table--stack td { display: block; width: auto; }
  .doc-table--stack tr { padding: 14px 14px 16px; border-top: 1px solid var(--line); }
  .doc-table--stack tbody tr:first-child { border-top: 0; }
  .doc-table--stack td { padding: 2px 0; border: 0 !important; text-align: left !important; white-space: normal; }
  .doc-table--stack td.id, .doc-table--stack td.res { display: inline-block; margin: 0 8px 6px 0; }
  .doc-table--stack td.num + td.res { margin-bottom: 0; vertical-align: bottom; }
  .doc-table--stack td.lead-cell { font-size: 15px; }
  .doc-table--stack td[data-label]::before { content: attr(data-label); display: block; margin-top: 8px; color: var(--muted); font: 500 10px/14px var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; }
  .doc-table--stack td.num { display: inline-block; min-width: 31%; margin-right: 2%; vertical-align: bottom; font-size: 13.5px; }
  .doc-table--stack td.id + td.lead-cell { display: inline; }
  .doc-table--stack td.id + td.lead-cell::after { content: ''; display: block; height: 4px; }
  .doc-table--matrix th, .doc-table--matrix td { padding-inline: 8px; }
  .doc-table--matrix th:first-child { white-space: normal; }
  .doc-table--kv, .doc-table--kv tbody { display: block; }
  .doc-table--kv tr { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 2px 12px; padding: 12px 14px; border-top: 1px solid var(--line); }
  .doc-table--kv tbody tr:first-child { border-top: 0; }
  .doc-table--kv td { padding: 0; border: 0 !important; }
  .doc-table--kv td:last-child { grid-column: 1 / -1; }
  .doc-table--kv .key { width: auto; }

  .sec-risk { padding: 18px 16px 20px; }
  .sec-risk__id { width: auto; }
  .sec-risk p { padding-left: 0; font-size: 15.5px; }
  ol.sec-steps { padding: 28px 20px 32px; margin-inline: calc(-1 * var(--page-pad)); }

  .deck-head__keys { display: none; }
  .deck-stage { padding-top: 32px; }
  .deck-dock { right: 12px; bottom: 12px; }
  .deck-dock__count { min-width: 72px; }
}

/* ---------------------------------------------------------- deck under 810 px: slides reflow into cards */
@media (max-width: 809px) {
  .deck { gap: 20px; }
  .deck-frame { width: 100%; height: auto; }
  .deck-frame .slide, .deck-present__stage .slide {
    position: relative;
    width: 100%;
    height: auto;
    min-height: 0;
    padding: 28px 20px 76px;
    transform: none;
    font-size: 17px;
  }
  .slide__eyebrow { margin-bottom: 14px; font-size: 12px; }
  .slide__h { font-size: 32px; line-height: 1.04; }
  .slide__h--xl { font-size: 46px; line-height: 0.98; }
  .slide__lead { margin-top: 16px; font-size: 18px; }
  .slide__note { margin-top: 20px; padding-top: 0; font-size: 13px; }
  .slide__foot { left: 20px; right: 20px; bottom: 18px; padding-top: 12px; }
  .slide__brand { gap: 8px; font-size: 15px; }
  .slide__brand img { width: 18px; height: 18px; }
  .slide__num { font-size: 12px; }
  .slide__url { display: none; }
  .slide .kv dd { font-size: 15px; }
  .slide--token .slide__h--xl { font-size: min(46px, 9.2vw); }
  .slide__cols, .slide__cols--2 { grid-template-columns: minmax(0, 1fr); gap: 12px; margin-top: 24px; }
  .slide .os-window__body { padding: 12px 14px 14px; font-size: 16px; }
  .slide--hero, .slide--end { min-height: 460px !important; }
  .slide--photo .slide__shade, .slide--photo-right .slide__shade { background: linear-gradient(to top, var(--blue) 30%, color-mix(in oklab, var(--blue) 78%, transparent) 70%, color-mix(in oklab, var(--blue) 45%, transparent)); }

  .slide-steps { grid-template-columns: minmax(0, 1fr); gap: 0; margin-top: 20px; }
  .slide-step, .slide-step:first-child { padding: 16px 0; border-left: 0; border-top: 1px solid var(--rule); }
  .slide-step__title { margin-top: 6px; font-size: 22px; }
  .slide-step__text { font-size: 16px; }
  .slide-step__icon { width: 140px; margin-bottom: 8px; }
  .slide-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 24px; }
  .slide-card { padding: 14px; }
  .slide-card__label { font-size: 11px; }
  .slide-stat { margin-top: 12px; font-size: 30px; }
  .slide-stat.live.is-loading { font-size: 22px; }
  .slide-cap { font-size: 13px; }
  .deck-best .os-window__body { font-size: 13px; }
  .cycle { grid-template-columns: minmax(0, 1fr); gap: 8px; margin-top: 24px; padding-top: 0; }
  .cycle__arrow { flex-direction: row; justify-content: center; }
  .cycle__arrow svg { width: 30px; transform: rotate(90deg); }
  .cycle .os-window__body { min-height: 0; }
  .cycle-strip { margin-top: 20px; }
  .versus .os-window__body { min-height: 0; font-size: 13px; }
  .slide-figures { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 24px; }
  .slide-figure { padding: 16px; }
  .slide-figure dt { font-size: 11px; }
  .slide-figure__v { margin-top: 14px; font-size: 40px; }
  .slide-figure__s { font-size: 14px; }
  .slide--split { padding-right: 20px !important; }
  .slide--split .slide__foot { right: 20px; }
  .slide__side { display: none; }
  .slide-grid4 { grid-template-columns: minmax(0, 1fr); margin-top: 24px; }
  .slide-mini, .slide-mini:nth-child(2n) { padding: 14px 0; border-left: 0; }
  .slide-mini__title { font-size: 20px; }
  .slide-mini p { font-size: 15px; }
  .slide-notes { grid-template-columns: minmax(0, 1fr); gap: 12px; margin-top: 24px; }
  .slide-note__meta { font-size: 20px; }
  .slide-note p { font-size: 15px; }
  .slide--token .slide__etching { position: relative; right: auto; bottom: auto; order: 10; width: 100%; max-width: 420px; margin: 16px auto 0; }
  .token-row { margin-top: 24px; }
  .token-row .btn { min-height: 44px; padding: 10px 14px; font-size: 14px; }
  .slide-links { gap: 4px 24px; margin-top: 24px; }
  .slide-links .cta-link { font-size: 26px; }

  .deck-present { align-items: flex-start; overflow-y: auto; }
  .deck-present__stage { width: 100%; height: auto; min-height: 100%; margin-bottom: 0; padding-bottom: 80px; overflow: visible; }
  .deck-present__bar { position: fixed; }
  .deck-present__hint { display: none; }
  .deck-present__stage .slide { animation-name: slide-in-m; }
  .deck-present__stage .slide.from-left { animation-name: slide-in-m-left; }
  @keyframes slide-in-m { from { opacity: 0.001; transform: translateX(24px); } to { opacity: 1; transform: none; } }
  @keyframes slide-in-m-left { from { opacity: 0.001; transform: translateX(-24px); } to { opacity: 1; transform: none; } }
}

@media (max-width: 379px) {
  .doc-stats--5 { grid-template-columns: minmax(0, 1fr); }
  .doc-stats--5 .doc-stat:last-child { grid-column: auto; }
  .slide__h { font-size: 28px; }
  .slide__h--xl { font-size: 38px; }
  .slide-stats, .slide-figures { grid-template-columns: minmax(0, 1fr); }
  .deck-dock__count { min-width: 64px; }
}

@media (prefers-reduced-motion: reduce) {
  .live.is-loading { animation: none; }
}