/* Website layout on top of design/bastion.css */
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body { overflow-x: hidden; }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 60; background: var(--bg); }
.skip { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--text); color: var(--bg); padding: 8px 12px; }
.skip:focus { left: 8px; }

/* Theme toggle shows the theme you would switch to. */
.only-light { display: none; }
@media (prefers-color-scheme: light) { :root:not([data-theme="dark"]) .only-light { display: inline; } :root:not([data-theme="dark"]) .only-dark { display: none; } }
:root[data-theme="light"] .only-light { display: inline; }
:root[data-theme="light"] .only-dark { display: none; }

/* Grid containers whose children hold code or tables must not grow past their track. */
.sect-main, .docs section, .tab-panel, .result-sec, .result-head, .hero-grid { grid-template-columns: minmax(0, 1fr); }

/* ---- header ------------------------------------------------------------------- */
/* Display crops of the original 1254px artwork, without changing the source.
   Mark: (427, 344), 400px square. Lockup: (177, 336), 900 × 600px. */
.brand-art { position: relative; display: block; flex: none; width: 28px; height: 28px; overflow: hidden; filter: grayscale(1) invert(1) contrast(1.1); mix-blend-mode: screen; }
.brand-art img { position: absolute; display: block; width: 313.5%; max-width: none; height: auto; left: -106.75%; top: -86%; }
.brand-art-full { width: 180px; height: 120px; }
.brand-art-full img { width: 139.333333%; left: -19.666667%; top: -56%; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .brand-art { filter: grayscale(1) contrast(1.1); mix-blend-mode: multiply; }
}
:root[data-theme="light"] .brand-art { filter: grayscale(1) contrast(1.1); mix-blend-mode: multiply; }
.hdr { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.hdr-in { display: flex; align-items: center; gap: 28px; height: 56px; }
.hdr-nav { display: flex; gap: 2px; }
.hdr-nav a, .hdr-nav-m a { color: var(--text-2); font-size: 14px; padding: 6px 10px; border-radius: var(--radius-sm); text-decoration: none; }
.hdr-nav a:hover, .hdr-nav-m a:hover { color: var(--text); background: var(--bg-2); }
.hdr-nav a[aria-current="page"], .hdr-nav-m a[aria-current="page"] { color: var(--text); box-shadow: inset 0 -2px 0 var(--accent); border-radius: 0; }
.hdr-tools { margin-left: auto; display: flex; align-items: center; gap: 6px; }
.hdr-btn { display: inline-flex; align-items: center; gap: 7px; height: 32px; padding: 0 9px; color: var(--text-2); font: 500 13px var(--font-sans); background: none; border: 1px solid transparent; border-radius: var(--radius); cursor: pointer; text-decoration: none !important; }
.hdr-btn:hover { color: var(--text); background: var(--bg-2); }
.hdr-gh { border-color: var(--line-2); }
.hdr-nav-m { display: none; }

/* ---- sections ------------------------------------------------------------------- */
.sect { border-top: 1px solid var(--line); padding-block: 64px; }
.sect-grid { display: grid; grid-template-columns: 236px minmax(0, 1fr); gap: 48px; }
.sect-side { position: sticky; top: 84px; align-self: start; }
.sect-side h2 { font: 600 22px/1.25 var(--font-display); letter-spacing: -0.01em; margin-bottom: 10px; }
.sect-side p { margin: 0; color: var(--text-2); font-size: 14px; }
.sect-side .side-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 14px; font-size: 14px; }
.sect-main { min-width: 0; display: grid; gap: 22px; align-content: start; }
.sect-main > h3 { font: 600 15px var(--font-sans); display: flex; align-items: center; gap: 8px; color: var(--text); margin-top: 6px; }
.sect-main > h3 .i { color: var(--text-3); }
.lede { color: var(--text-2); font-size: 15.5px; margin: 0; max-width: 70ch; }

/* ---- hero ------------------------------------------------------------------------ */
.hero { padding-block: 56px 64px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 36px; }
.hero-text { max-width: 760px; }
.hero-alert { display: inline-flex; align-items: center; gap: 8px; font: 500 13px var(--font-mono); color: var(--text-2); text-decoration: none !important; border-bottom: 1px solid var(--line-2); padding-bottom: 6px; }
.hero-alert .i { color: var(--red); }
.hero-alert:hover { color: var(--text); border-color: var(--line-3); }
.hero h1 { font: 600 clamp(32px, 4.4vw, 50px)/1.06 var(--font-display); letter-spacing: -0.02em; margin: 22px 0 18px; }
.hero-sub { color: var(--text-2); font-size: 16.5px; line-height: 1.6; margin: 0 0 26px; max-width: 58ch; }
.cmd { display: flex; align-items: center; gap: 10px; background: var(--bg-1); border: 1px solid var(--line-2); border-radius: var(--radius); padding: 4px 4px 4px 12px; font: 13.5px var(--font-mono); max-width: 100%; }
.cmd code { background: none; border: 0; padding: 0; white-space: nowrap; overflow-x: auto; flex: 1; min-width: 0; font-size: 13px; scrollbar-width: none; }
.cmd .p { color: var(--text-4); user-select: none; }
.copy { flex: none; display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; border-radius: var(--radius-sm); border: 0; background: none; color: var(--text-3); cursor: pointer; }
.copy:hover { background: var(--bg-3); color: var(--text); }
.copy .ok { display: none; }
.copy.is-done .ok { display: block; color: var(--green); }
.copy.is-done .cp { display: none; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.facts-line { display: flex; flex-wrap: wrap; gap: 8px 20px; margin: 26px 0 0; padding: 14px 0 0; border-top: 1px solid var(--line); list-style: none; font-size: 13.5px; color: var(--text-2); }
.facts-line li { display: inline-flex; align-items: center; gap: 7px; }
.facts-line .i { color: var(--text-3); }
.hero .term pre { max-height: 470px; }
.term-cap { margin: 10px 0 0; font: 12px/1.5 var(--font-mono); color: var(--text-3); }

/* ---- advisory --------------------------------------------------------------------- */
.adv-head { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.adv-head h3 { font: 600 20px var(--font-display); }
.vector { font: 12.5px var(--font-mono); color: var(--text-2); overflow-wrap: anywhere; }
.ids { display: flex; flex-wrap: wrap; gap: 6px; }
.dates { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.dates li { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 12px; }
.dates time { font: 12.5px/1.6 var(--font-mono); color: var(--text-3); }
.fix-ok { color: var(--green); }
.fix-none { color: var(--red); }
.cols-2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 22px; }
.cols-wide { grid-template-columns: minmax(0, 0.62fr) minmax(0, 1.38fr); }

/* ---- pipeline ------------------------------------------------------------------------ */
.pipe { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-1); }
.pipe li { position: relative; padding: 14px 14px 16px; border-right: 1px solid var(--line); display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.pipe li:last-child { border-right: 0; }
.pipe li::after { content: ""; position: absolute; right: -6px; top: 22px; width: 10px; height: 10px; background: var(--bg-1); border-top: 1px solid var(--line-2); border-right: 1px solid var(--line-2); transform: rotate(45deg); z-index: 1; }
.pipe li:last-child::after { display: none; }
.pipe .i { width: 20px; height: 20px; color: var(--accent); }
.pipe b { font: 600 13.5px var(--font-sans); }
.pipe span { font-size: 12.5px; color: var(--text-2); line-height: 1.45; }
.pipe .out { flex-direction: column; gap: 3px; margin-top: 2px; }
.pipe .out .st { font-size: 12px; }

/* ---- tabs ------------------------------------------------------------------------------ */
.tabs-bar { display: flex; gap: 0; border-bottom: 1px solid var(--line); overflow-x: auto; scrollbar-width: none; }
.tabs-bar button { display: inline-flex; align-items: center; gap: 7px; font: 500 13.5px var(--font-sans); color: var(--text-3); background: none; border: 0; border-bottom: 2px solid transparent; padding: 10px 14px; cursor: pointer; white-space: nowrap; margin-bottom: -1px; }
.tabs-bar button[aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); }
.tabs-bar button:hover { color: var(--text); }
.tab-panel { padding-top: 16px; display: grid; gap: 12px; }
.tab-panel p { color: var(--text-2); font-size: 14.5px; margin: 0; }
.codebox { position: relative; }
.codebox .copy { position: absolute; top: 6px; right: 6px; background: var(--bg-2); }
.codebox pre { padding-right: 50px; }

/* ---- page header (inner pages) ---------------------------------------------------------- */
.phead { padding-block: 48px 32px; border-bottom: 1px solid var(--line); }
.crumbs { display: flex; align-items: center; gap: 6px; font: 12.5px var(--font-mono); color: var(--text-3); }
.phead h1 { font: 600 clamp(28px, 3.6vw, 40px)/1.12 var(--font-display); letter-spacing: -0.015em; margin: 14px 0 12px; max-width: 26ch; }
.phead p { color: var(--text-2); font-size: 16.5px; margin: 0; max-width: 66ch; }

/* ---- how it works ----------------------------------------------------------------------- */
.prose { max-width: 72ch; font-size: 15.5px; }
.prose p { color: var(--text-2); margin: 0 0 14px; }
.prose p strong, .prose li strong { color: var(--text); font-weight: 600; }
.prose h3 { font: 600 17px var(--font-sans); margin: 26px 0 8px; display: flex; align-items: center; gap: 8px; }
.prose h3 .i { color: var(--text-3); }
.prose ul, .prose ol { color: var(--text-2); padding-left: 20px; margin: 0 0 14px; }
.prose li { margin: 5px 0; }
.risk-list { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--line); }
.risk-list li { display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 10px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.risk-list .i { width: 20px; height: 20px; color: var(--amber); margin-top: 2px; }
.risk-list b { display: block; color: var(--text); font-weight: 600; margin-bottom: 3px; }
.risk-list p { margin: 0; color: var(--text-2); font-size: 14.5px; }
.diagram { padding: 18px; }
.diagram svg { display: block; width: 100%; height: auto; }
.diagram svg text { font-family: var(--font-mono); }
.compare { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 14px; }
.compare .panel-body { padding: 0; }
.compare pre { border: 0; border-radius: 0; margin: 0; }

.walk { margin: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--bg-1); }
.walk-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 9px 14px; border-bottom: 1px solid var(--line); font: 12px var(--font-mono); color: var(--text-3); flex-wrap: wrap; }
.walk-head a { display: inline-flex; align-items: center; gap: 6px; color: var(--text-2); }
.walk-step { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 0.7fr); border-bottom: 1px solid var(--line); }
.walk-step:last-child { border-bottom: 0; }
.walk-step pre { margin: 0; border: 0; border-radius: 0; background: var(--bg); border-right: 1px solid var(--line); font-size: 12.5px; padding: 12px 14px; }
.walk-step .ln { color: var(--text-4); user-select: none; display: inline-block; width: 3.2ch; text-align: right; margin-right: 1.6ch; }
.walk-note { padding: 12px 16px; font-size: 14px; color: var(--text-2); }
.walk-note b { color: var(--text); font-weight: 600; display: block; margin-bottom: 4px; }
.walk-note .step-n { font: 500 11.5px var(--font-mono); color: var(--text-3); display: block; margin-bottom: 4px; }

/* ---- check ----------------------------------------------------------------------------- */
.check-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px; align-items: start; }
.check-input textarea { width: 100%; min-height: 210px; resize: vertical; background: var(--bg); color: var(--text); border: 1px solid var(--line-2); border-radius: var(--radius-sm); padding: 11px 13px; font: 13px/1.6 var(--font-mono); outline: none; }
.check-input textarea:focus { border-color: var(--accent-line); box-shadow: 0 0 0 3px var(--accent-bg); }
.field-label { display: block; font: 500 12.5px var(--font-sans); color: var(--text-2); margin-bottom: 8px; }
.check-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 10px; }
.check-row select { background: var(--bg-1); color: var(--text); border: 1px solid var(--line-2); border-radius: var(--radius); padding: 9px 10px; font: 13.5px var(--font-sans); max-width: 100%; }
.examples { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-top: 14px; }
.examples button { cursor: pointer; }
.examples button:hover { color: var(--text); border-color: var(--line-3); }
.hint { font-size: 13px; color: var(--text-3); margin: 12px 0 0; }
.hint code { font-size: 11.5px; }
.privacy { display: flex; gap: 8px; align-items: center; font-size: 13px; color: var(--text-3); margin-top: 12px; }
.privacy .i { color: var(--green); }
.result-empty { padding: 40px 20px; color: var(--text-3); text-align: center; font-size: 14px; display: grid; justify-items: center; gap: 10px; }
.result-empty .i { width: 28px; height: 28px; color: var(--text-4); }
.result-head { padding: 18px 16px 14px; border-bottom: 1px solid var(--line); display: grid; gap: 10px; }
.result-head h3 { font: 600 19px var(--font-display); }
.result-head p { margin: 0; color: var(--text-2); font-size: 14px; }
.result-sec { padding: 14px 16px; border-bottom: 1px solid var(--line); display: grid; gap: 8px; }
.result-sec:last-child { border-bottom: 0; }
.ev { list-style: none; margin: 0; padding: 0; font-size: 13.5px; display: grid; gap: 6px; }
.ev li { display: grid; grid-template-columns: 18px 84px minmax(0, 1fr); gap: 8px; align-items: start; }
.ev .m { color: var(--text-4); padding-top: 2px; display: flex; }
.ev li[data-v="fixed"] .m { color: var(--green); }
.ev li[data-v="vulnerable"] .m { color: var(--red); }
.ev .kd { font: 12px/1.6 var(--font-mono); color: var(--text-3); }

/* ---- docs ----------------------------------------------------------------------------- */
.docs-grid { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 56px; padding-block: 40px 88px; }
.toc { position: sticky; top: 84px; align-self: start; display: flex; flex-direction: column; gap: 1px; font-size: 14px; }
.toc .label { margin: 16px 0 6px; }
.toc .label:first-child { margin-top: 0; }
.toc a { display: flex; align-items: center; gap: 8px; color: var(--text-3); padding: 4px 8px; border-left: 2px solid transparent; text-decoration: none; }
.toc a .i { width: 14px; height: 14px; }
.toc a:hover { color: var(--text); }
.toc a[aria-current="true"] { color: var(--text); border-left-color: var(--accent); }
.docs section { margin-bottom: 56px; display: grid; gap: 14px; }
.docs h2 { font: 600 24px var(--font-display); letter-spacing: -0.01em; display: flex; align-items: center; gap: 10px; }
.docs h2 .i { color: var(--text-3); width: 20px; height: 20px; }
.docs h3 { font: 600 16px var(--font-sans); margin-top: 8px; }
.docs p, .docs li { color: var(--text-2); font-size: 15px; margin: 0; }
.docs .tbl td { color: var(--text-2); }
.docs .tbl td:first-child { color: var(--text); }
.faq details { border-bottom: 1px solid var(--line); padding: 13px 0; }
.faq details:first-of-type { border-top: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 500; color: var(--text); list-style: none; display: flex; justify-content: space-between; gap: 16px; align-items: center; }
.faq summary .i { color: var(--text-3); transition: transform 0.15s; }
.faq details[open] summary .i { transform: rotate(90deg); }
.faq summary::-webkit-details-marker { display: none; }
.faq details p { margin-top: 10px; }

/* ---- footer ----------------------------------------------------------------------------- */
.ftr { border-top: 1px solid var(--line); padding-block: 40px 28px; }
.ftr-in { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.ftr-brand p { margin: 10px 0 0; font-size: 13.5px; color: var(--text-3); max-width: 34ch; }
.ftr-cols { display: flex; gap: 56px; flex-wrap: wrap; margin: 0; }
.ftr-cols dt { font: 500 11.5px var(--font-mono); letter-spacing: 0.04em; text-transform: uppercase; color: var(--text-3); margin-bottom: 10px; }
.ftr-cols dd { margin: 0 0 6px; }
.ftr-cols a { color: var(--text-2); font-size: 14px; }
.ftr-note { display: flex; align-items: center; gap: 8px; margin-top: 32px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 12.5px; color: var(--text-3); }

/* ---- engineering details: retain the existing manual layout and palette ----------------- */
.hero-intro { display: grid; grid-template-columns: minmax(0, 760px) minmax(260px, 1fr); gap: 48px; align-items: start; }
.scan-preview { min-width: 0; }
.scan-preview-head { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 14px; font: 12px/1.5 var(--font-mono); color: var(--text-2); }
.scan-preview-head > span, .scan-preview-head > a { flex: none; }
.scan-preview-head a { display: inline-flex; align-items: center; gap: 6px; color: var(--text-2); }
.scan-preview .term-cap { font-size: 11.5px; line-height: 1.7; }
/* The drawing lives inside the content: binary → observations → proof. */
.evidence-map { position: relative; min-width: 0; margin-top: 6px; padding: 0 0 16px 24px; background-image: radial-gradient(circle, var(--line-2) .7px, transparent .7px); background-size: 16px 16px; }
.evidence-map::before { content: ""; position: absolute; inset: 0 auto 0 0; border-left: 1px dashed var(--line-2); pointer-events: none; }
.evidence-map-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; color: var(--text-2); font: 12px/1.5 var(--font-mono); background: var(--bg); padding-bottom: 16px; }
.evidence-map-head .i { width: 15px; height: 15px; color: var(--text-3); }
.evidence-source { display: flex; align-items: center; justify-content: center; gap: 12px; margin-top: 12px; color: var(--text); font: 500 13px/1.5 var(--font-mono); }
.evidence-source > .i { width: 26px; height: 26px; color: var(--accent); }
.evidence-source small { display: block; color: var(--text-2); font: 11px/1.7 var(--font-mono); }
.evidence-branches { position: relative; display: flex; justify-content: space-around; margin: 30px 0 22px; border-top: 1px solid var(--line-3); color: var(--text-2); font: 10px/1.5 var(--font-mono); }
.evidence-branches::before { content: ""; position: absolute; bottom: 100%; left: 50%; height: 18px; border-left: 1px solid var(--line-3); }
.evidence-branches span { position: relative; padding-top: 12px; }
.evidence-branches span::before { content: ""; position: absolute; width: 5px; height: 5px; top: -3px; left: calc(50% - 3px); background: var(--bg); border: 1px solid var(--text-3); }
.evidence-steps { position: relative; list-style: none; margin: 0; padding: 0; }
.evidence-steps::before { content: ""; position: absolute; right: 10px; top: 22px; bottom: 22px; border-left: 1px dashed var(--line-3); pointer-events: none; }
.evidence-step { position: relative; display: grid; grid-template-columns: 22px 16px 1fr 8px; align-items: center; gap: 10px; width: 100%; min-height: 44px; padding: 9px 7px 9px 0; border: 0; border-radius: 0; background: transparent; text-align: left; color: var(--text-2); font: 12px/1.4 var(--font-mono); cursor: pointer; transition: color 180ms ease-out, background-color 180ms ease-out; }
.evidence-index { color: var(--text-3); font-size: 10px; }
.evidence-step > .i { width: 15px; height: 15px; }
.evidence-node { position: relative; width: 7px; height: 7px; border: 1px solid var(--text-3); background: var(--bg); border-radius: 50%; }
.evidence-step[aria-pressed="true"] { color: var(--accent); background: var(--accent-bg); }
.evidence-step[aria-pressed="true"] .evidence-node { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-bg); }
.evidence-step[aria-pressed="true"] .evidence-index { color: var(--accent); }
.evidence-detail { position: relative; min-height: 125px; margin-top: 18px; padding-top: 16px; border-top: 1px dashed var(--line-3); background: var(--bg); }
.evidence-detail::before { content: ""; position: absolute; right: 10px; bottom: 100%; height: 18px; border-left: 1px dashed var(--line-3); }
.evidence-detail-title { display: block; color: var(--text); font: 500 12px/1.5 var(--font-mono); }
.evidence-detail p { margin: 8px 0 0; color: var(--text-2); font: 13px/1.6 var(--font-sans); }
.evidence-more { display: inline-flex; align-items: center; gap: 8px; color: var(--text-2); font: 11px/1.5 var(--font-mono); background: var(--bg); }
/* Expose the reading grid through the gutter, and connect real pipeline steps. */
@media (min-width: 1041px) {
  .sect-grid { position: relative; }
  .sect-grid::before { content: ""; position: absolute; top: 0; bottom: 0; left: 284px; border-left: 1px dashed var(--line); pointer-events: none; }
  .sect-side h2 { position: relative; }
  .sect-side h2::after { content: ""; position: absolute; top: 13px; left: calc(100% + 19px); width: 9px; height: 9px; border: 1px solid var(--line-3); background: var(--bg); transform: rotate(45deg); }
}
.pipe { counter-reset: evidence; border: 0; border-radius: 0; background: transparent; gap: 0; }
.pipe li { counter-increment: evidence; border: 0; padding: 28px 12px 12px 0; background: transparent; }
.pipe li::before { content: "0" counter(evidence); position: absolute; left: 0; top: 0; background: var(--bg); padding-right: 10px; color: var(--text-2); font: 11px/1.5 var(--font-mono); z-index: 1; }
.pipe li::after { inset: 8px 0 auto 0; width: auto; height: 0; border: 0; border-top: 1px dashed var(--line-3); border-radius: 0; background: none; transform: none; z-index: 0; }
.pipe li:last-child::after { display: block; }
.pipe li > .i { transition: color 180ms ease-out, transform 180ms ease-out; }
.pipe li:hover > .i { color: var(--accent-2); transform: translateY(-2px); }
.pipe li:hover::after { border-color: var(--accent); }
.walk-step { transition: background-color 180ms ease-out; }
.walk-step:hover .walk-note { background: var(--accent-bg); }
.walk-step:hover .ln { color: var(--accent); }
.cmd, .codebox .code, .check-input { transition: border-color 160ms ease-out; }
.cmd:focus-within, .codebox:focus-within .code, .check-input:focus-within { border-color: var(--accent); }
.btn, .hdr-btn, .copy, .tabs-bar button, .examples button { transition: background-color 160ms ease-out, border-color 160ms ease-out, color 160ms ease-out, transform 120ms ease-out; }
.btn:active, .hdr-btn:active, .copy:active, .examples button:active { transform: translateY(1px); }
.tbl tbody td { transition: background-color 140ms ease-out; }
.tbl tbody tr:focus-within td { background: var(--accent-bg); }
.tabs-bar button[aria-selected="true"] { background: var(--accent-bg); }
.diagram { background-image: radial-gradient(circle, var(--line-2) .75px, transparent .75px); background-size: 20px 20px; }
.section-anchor { display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 28px; flex: none; margin-left: 6px; vertical-align: middle; color: var(--text-3); font: 400 15px var(--font-mono); text-decoration: none !important; opacity: 0; transition: opacity 140ms ease-out, color 140ms ease-out; }
.sect-side h2:hover .section-anchor, .docs h2:hover .section-anchor, .section-anchor:focus-visible { opacity: 1; }
.section-anchor:hover { color: var(--accent); }
.cmd { position: relative; }
.copy-feedback { position: absolute; z-index: 2; right: 0; bottom: calc(100% + 8px); display: block; width: max-content; max-width: min(340px, 100%); padding: 6px 10px; border: 1px solid var(--line-2); border-radius: var(--radius-sm); background: var(--bg-2); font: 12px/1.5 var(--font-mono); color: var(--text); pointer-events: none; }
.copy-feedback:empty { display: none; }
@media (hover: hover) {
  .cmd:hover, .codebox:hover .code { border-color: var(--line-3); }
  .cmd:focus-within, .codebox:focus-within .code { border-color: var(--accent); }
}
@media (hover: none) { .section-anchor { opacity: 1; } }
@media (max-width: 1040px) {
  .hero-intro { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .evidence-map { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); column-gap: 32px; padding: 20px 0 0; border-top: 1px solid var(--line); }
  .evidence-map::before { display: none; }
  .evidence-map-head { grid-column: 1 / -1; }
  .evidence-source { grid-column: 1; grid-row: 2; justify-content: start; margin: 0 0 20px; }
  .evidence-branches { display: none; }
  .evidence-steps { grid-column: 1; grid-row: 3 / 5; }
  .evidence-detail { grid-column: 2; grid-row: 2 / 4; margin: 0; }
  .evidence-detail::before { display: none; }
  .evidence-more { grid-column: 2; align-self: end; }
}
@media (max-width: 720px) {
  .scan-preview-head { gap: 10px; font-size: 11px; }
  .evidence-map { column-gap: 18px; }
  .evidence-step { grid-template-columns: 14px 1fr; gap: 8px; font-size: 11px; }
  .evidence-index, .evidence-node, .evidence-steps::before { display: none; }
  .evidence-detail p { font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) { .btn:active, .hdr-btn:active, .copy:active, .examples button:active, .pipe li:hover > .i { transform: none; } }
@media print { .section-anchor { display: none; } }

/* ---- responsive ------------------------------------------------------------------------ */
@media (max-width: 1040px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .sect-grid { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .sect-side { position: static; }
  .pipe { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .pipe li:nth-child(3n) { border-right: 0; }
  .pipe li:nth-child(-n+3) { border-bottom: 1px solid var(--line); }
  .pipe li:nth-child(3n)::after { display: none; }
  .pipe li:nth-child(n) { border: 0; }
  .walk-step { grid-template-columns: minmax(0, 1fr); }
  .walk-step pre { border-right: 0; border-bottom: 1px solid var(--line); }
  .check-grid, .cols-2, .compare { grid-template-columns: minmax(0, 1fr); }
  .docs-grid { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .toc { position: static; flex-direction: row; flex-wrap: wrap; gap: 4px; }
  .toc .label { display: none; }
  .toc a { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 4px 8px; font-size: 13px; }
}
@media (max-width: 720px) {
  .hdr-nav { display: none; }
  .hdr-gh span { display: none; }
  .hdr-nav-m { display: flex; gap: 2px; overflow-x: auto; padding-bottom: 6px; scrollbar-width: none; }
  .hdr-nav-m a { white-space: nowrap; font-size: 13.5px; }
  .hero { padding-block: 32px 48px; }
  .sect { padding-block: 44px; }
  .pipe { grid-template-columns: minmax(0, 1fr); }
  .pipe li { border-right: 0; border-bottom: 1px solid var(--line); }
  .pipe li:last-child { border-bottom: 0; }
  .pipe li::after { display: none; }
  .pipe li { padding: 0 0 24px 36px; }
  .pipe li:nth-child(n)::after { display: block; inset: 22px auto 0 7px; height: auto; width: 0; border: 0; border-left: 1px dashed var(--line-3); }
  .pipe li:last-child::after { display: none; }
  .ev li { grid-template-columns: 18px minmax(0, 1fr); }
  .ev .kd { display: none; }
  .ftr-cols { gap: 32px; }
}

.sect-main.prose { display: block; }
.sect-main.prose > .panel { margin: 18px 0; }