/* Intralock site — layout and components.
   Depends on tokens.css. No external assets, no runtime framework. */

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { margin: 0; font-weight: 500; line-height: 1.12; }
p { margin: 0; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-strong); }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; }
::selection { background: var(--accent); color: var(--bg-deep); }

.hero-grid > *, .section-head > *, .steps > *, .split > *, .doc-layout > *, .iface-grid > *, .invariants > * { min-width: 0; }


:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: var(--bg-deep);
  padding: 0.6rem 1rem; z-index: 100;
}
.skip:focus { left: 1rem; top: 1rem; }

.wrap { width: min(var(--wrap), 100% - 3rem); margin-inline: auto; }
.mono { font-family: var(--font-mono); }
.muted { color: var(--muted); }
.faint { color: var(--faint); }
.small { font-size: var(--step--1); }
.center { text-align: center; }

/* ---------- header ---------- */

.site-header {
  position: sticky; top: 0; z-index: 40;
  height: var(--header-h);
  display: flex; align-items: center;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.site-header .wrap { display: flex; align-items: center; gap: var(--s-6); width: min(var(--wrap), 100% - 3rem); }

.brand { display: flex; align-items: center; gap: 0.65rem; color: var(--text-strong); text-decoration: none; }
.brand:hover { color: var(--text-strong); }
.brand .mark { width: 26px; height: 26px; color: var(--accent); flex: none; }
.brand .name {
  font-family: var(--font-display);
  font-weight: 600;
  font-stretch: 125%;
  font-size: 1.02rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.brand .tag {
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  border-left: 1px solid var(--line);
  padding-left: 0.6rem;
  margin-left: 0.15rem;
  align-self: center;
  line-height: 1.4;
}

.nav { margin-left: auto; display: flex; align-items: center; gap: 1.6rem; }
.nav a {
  color: var(--muted); text-decoration: none;
  font-size: 0.875rem; letter-spacing: 0.01em;
  padding: 0.35rem 0;
  border-bottom: 1px solid transparent;
  transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease);
}
.nav a:hover { color: var(--text); }
.nav a[aria-current="page"] { color: var(--text-strong); border-bottom-color: var(--accent); }

.header-tools { display: flex; align-items: center; gap: 0.5rem; }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px;
  background: transparent; border: 1px solid var(--line);
  border-radius: var(--radius); color: var(--muted);
  cursor: pointer;
}
.icon-btn:hover { color: var(--text); border-color: var(--line-strong); }
.icon-btn svg { width: 16px; height: 16px; }
.icon-btn .sun { display: block; }
.icon-btn .moon { display: none; }
:root[data-theme="light"] .icon-btn .sun { display: none; }
:root[data-theme="light"] .icon-btn .moon { display: block; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .icon-btn .sun { display: none; }
  :root:not([data-theme="dark"]) .icon-btn .moon { display: block; }
}

.nav-toggle { display: none; }

@media (max-width: 900px) {
  .brand .tag { display: none; }
  .nav {
    display: none;
    position: absolute; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg-deep);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem 1.5rem 1rem;
  }
  .nav[data-open="true"] { display: flex; }
  .nav a { padding: 0.7rem 0; border-bottom: 1px solid var(--line-soft); }
  .nav-toggle { display: inline-flex; }
}

/* ---------- hero ---------- */

.hero { padding: clamp(3.5rem, 8vw, 6.5rem) 0 clamp(3rem, 6vw, 5rem); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr); gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--faint);
  display: flex; align-items: center; gap: 0.6rem;
}
.eyebrow::before { content: ""; width: 18px; height: 1px; background: var(--accent); opacity: 0.8; }

.display {
  font-family: var(--font-display);
  font-weight: 600;
  font-stretch: 125%;
  font-size: var(--step-5);
  line-height: 1.02;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-strong);
  margin-top: 1.1rem;
  text-wrap: balance;
}
.display em { font-style: normal; color: var(--accent); }

.lede {
  margin-top: 1.4rem;
  font-size: clamp(1.05rem, 1.5vw, 1.22rem);
  line-height: 1.6;
  color: var(--muted);
  max-width: 34em;
}

.cta-row { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }

.btn {
  display: inline-flex; align-items: center; gap: 0.55rem;
  padding: 0.72rem 1.15rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-size: 0.9rem; font-weight: 500;
  text-decoration: none;
  transition: background var(--fast) var(--ease), border-color var(--fast) var(--ease), transform var(--fast) var(--ease);
}
.btn svg { width: 15px; height: 15px; }
.btn-primary { background: var(--accent); color: var(--bg-deep); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); color: var(--bg-deep); }
.btn-ghost { border-color: var(--line-strong); color: var(--text); background: transparent; }
.btn-ghost:hover { border-color: var(--accent); color: var(--text-strong); background: var(--accent-wash); }

.status-line {
  margin-top: 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--faint);
  display: flex; align-items: center; gap: 0.5rem;
}
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--warn); flex: none; }
.dot.ok { background: var(--ok); }
.dot.bad { background: var(--danger); }

/* workspace specimen */
.specimen {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.specimen-head {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--line);
  background: var(--panel-sunken);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--faint);
}
.specimen-head .status { margin-left: auto; display: inline-flex; align-items: center; gap: 0.35rem; color: var(--ok); }
.specimen-body { padding: 1.1rem 1.15rem 1.25rem; }

.tree {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 2.05;
  color: var(--muted);
  white-space: nowrap;
  overflow-x: auto;
}
.tree .row { display: flex; align-items: center; gap: 0.5rem; }
.tree .row .path { color: var(--text); }
.tree .row .path.folder { color: var(--text-strong); }
.tree .row .meta { margin-left: auto; padding-left: 1rem; font-size: 0.66rem; letter-spacing: 0.04em; color: var(--faint); }
.tree .row .meta.ok { color: var(--ok); }
.tree .row .meta.review { color: var(--review); }
.tree .gl { color: var(--line-strong); user-select: none; }

.specimen-foot {
  border-top: 1px solid var(--line);
  padding: 0.65rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--faint);
  display: flex; gap: 1rem; flex-wrap: wrap;
}
.specimen-foot b { color: var(--muted); font-weight: 500; }

/* fact strip */
.facts {
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.facts div { padding: 1.1rem 1.25rem; border-right: 1px solid var(--line-soft); }
.facts div:last-child { border-right: 0; }
.facts dt { font-family: var(--font-mono); font-size: 0.64rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--faint); }
.facts dd { margin: 0.35rem 0 0; font-size: 0.95rem; color: var(--text); }

/* ---------- sections ---------- */

.section { padding: clamp(4rem, 8vw, 6.5rem) 0; border-top: 1px solid var(--line-soft); }
.section:first-of-type { border-top: 0; }

.section-head { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: 2rem; align-items: end; margin-bottom: clamp(2rem, 4vw, 3.25rem); }
.section-head h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-stretch: 125%;
  font-size: clamp(1.32rem, 2.3vw, 1.85rem);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-strong);
  margin-top: 0.75rem;
  text-wrap: balance;
}
.section-head .sub { color: var(--muted); font-size: 1.02rem; max-width: 40em; }

.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line-soft); border: 1px solid var(--line); }
.step { background: var(--bg); padding: 1.6rem 1.5rem 1.8rem; }
.step .n { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.14em; color: var(--accent); }
.step h3 { margin-top: 1.1rem; font-size: 1.12rem; color: var(--text-strong); font-weight: 500; }
.step p { margin-top: 0.6rem; color: var(--muted); font-size: 0.92rem; }
.step code { font-size: 0.8em; }

.invariants { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); }
.invariant { display: grid; grid-template-columns: 3.2rem 1fr; gap: 1rem; padding: 1.5rem 1.4rem 1.6rem 0; border-bottom: 1px solid var(--line-soft); }
.invariant:nth-child(odd) { padding-right: 2rem; border-right: 1px solid var(--line-soft); }
.invariant:nth-child(even) { padding-left: 2rem; }
.invariant .i {
  font-family: var(--font-display);
  font-size: 1.5rem; color: var(--faint);
  line-height: 1;
}
.invariant h3 { font-size: 0.98rem; color: var(--text-strong); font-weight: 600; }
.invariant p { margin-top: 0.35rem; color: var(--muted); font-size: 0.9rem; }

.iface-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.iface {
  border: 1px solid var(--line); background: var(--panel);
  border-radius: var(--radius); padding: 1.35rem 1.35rem 1.15rem;
  transition: border-color var(--fast) var(--ease), background var(--fast) var(--ease);
}
.iface:hover { border-color: var(--line-strong); background: var(--panel-raised); }
.iface .tag { font-family: var(--font-mono); font-size: 0.64rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); }
.iface h3 { margin-top: 0.8rem; font-size: 1.05rem; color: var(--text-strong); }
.iface p { margin-top: 0.4rem; color: var(--muted); font-size: 0.88rem; }
.iface pre { margin-top: 1rem; padding: 0.65rem 0.75rem; background: var(--panel-sunken); border: 1px solid var(--line-soft); border-radius: 4px; font-family: var(--font-mono); font-size: 0.7rem; color: var(--muted); overflow-x: auto; }
.iface pre b { color: var(--text); font-weight: 500; }

.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.prose p { color: var(--muted); margin-top: 1rem; }
.prose p:first-child { margin-top: 0; }
.prose h3 { margin-top: 2rem; font-size: 1.05rem; color: var(--text-strong); }
.prose ul { margin: 1rem 0 0; padding-left: 1.1rem; color: var(--muted); }
.prose li { margin-top: 0.5rem; }
.prose li::marker { color: var(--faint); }

.panel {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}
.panel h3 { font-size: 0.95rem; color: var(--text-strong); }
.panel + .panel { margin-top: 1rem; }

.arch {
  border: 1px solid var(--line); background: var(--panel);
  border-radius: var(--radius-lg); padding: 1.4rem;
  font-family: var(--font-mono); font-size: 0.74rem; color: var(--muted);
  overflow-x: auto;
}
.arch .band { display: flex; gap: 0.5rem; align-items: stretch; margin-top: 0.5rem; flex-wrap: wrap; }
.arch .box { flex: 1 1 0; min-width: 120px; border: 1px solid var(--line-strong); padding: 0.65rem 0.7rem; border-radius: 3px; background: var(--panel-sunken); }
.arch .box.accent { border-color: var(--accent-dim); color: var(--text); }
.arch .box b { display: block; color: var(--text-strong); font-weight: 500; margin-bottom: 0.2rem; }
.arch .arrow { align-self: center; color: var(--faint); padding: 0 0.2rem; }
.arch .cap { color: var(--faint); font-size: 0.66rem; letter-spacing: 0.08em; text-transform: uppercase; margin-top: 1rem; }

/* ---------- tables ---------- */

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table.data { width: 100%; border-collapse: collapse; font-size: 0.86rem; }
table.data th, table.data td { text-align: left; padding: 0.68rem 0.9rem; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
table.data th {
  font-family: var(--font-mono); font-size: 0.64rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--faint); font-weight: 500; background: var(--panel-sunken);
  border-bottom: 1px solid var(--line);
}
table.data tr:last-child td { border-bottom: 0; }
table.data td:first-child { color: var(--text-strong); }
table.data code { font-size: 0.82em; }
table.data tr:hover td { background: var(--accent-wash); }

/* ---------- code ---------- */

.code { margin: 1.25rem 0 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel-sunken); overflow: hidden; }
.code-head {
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.5rem 0.8rem;
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--font-mono); font-size: 0.68rem; color: var(--faint);
}
.code-head .lang { color: var(--accent); }
.code-head button {
  margin-left: auto; background: transparent; border: 1px solid var(--line);
  color: var(--faint); font-family: var(--font-mono); font-size: 0.64rem;
  padding: 0.2rem 0.45rem; border-radius: 2px; cursor: pointer;
}
.code-head button:hover { color: var(--text); border-color: var(--line-strong); }
.code pre {
  margin: 0; padding: 0.95rem 1rem; overflow-x: auto;
  font-family: var(--font-mono); font-size: 0.78rem; line-height: 1.7;
  color: var(--text);
}
.code pre .c { color: var(--faint); }
.code pre .k { color: var(--accent); }
.code pre .s { color: var(--ok); }
.code pre .n { color: var(--warn); }

code { font-family: var(--font-mono); font-size: 0.86em; color: var(--text-strong); background: var(--panel-sunken); padding: 0.1em 0.3em; border-radius: 2px; border: 1px solid var(--line-soft); }
.code code { background: none; border: 0; padding: 0; }

/* ---------- callouts ---------- */

.note {
  border-left: 2px solid var(--accent);
  background: var(--accent-wash);
  padding: 0.9rem 1.1rem;
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 1.5rem;
}
.note.warn { border-color: var(--warn); background: transparent; border: 1px solid var(--line); border-left: 2px solid var(--warn); }
.note b { color: var(--text-strong); font-weight: 600; }

/* ---------- docs ---------- */

.doc-layout { display: grid; grid-template-columns: 210px minmax(0, 1fr); gap: clamp(2rem, 5vw, 4rem); padding: clamp(2.5rem, 5vw, 4rem) 0 5rem; }
.doc-side { position: sticky; top: calc(var(--header-h) + 2rem); align-self: start; }
.doc-side .label { font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--faint); }
.doc-side nav { margin-top: 0.75rem; display: flex; flex-direction: column; }
.doc-side a { color: var(--muted); text-decoration: none; font-size: 0.88rem; padding: 0.35rem 0; border-left: 1px solid var(--line); padding-left: 0.85rem; }
.doc-side a:hover { color: var(--text); }
.doc-side a[aria-current="page"] { color: var(--text-strong); border-left-color: var(--accent); }

.doc-body { max-width: 72ch; }
.doc-body h1 { font-family: var(--font-display); font-weight: 600; font-stretch: 125%; font-size: clamp(1.7rem, 3.2vw, 2.3rem); letter-spacing: 0.05em; text-transform: uppercase; color: var(--text-strong); margin-top: 0.6rem; }
.doc-body .kicker { margin-bottom: 0.5rem; }
.doc-body h2 { margin-top: 3rem; font-family: var(--font-display); font-weight: 600; font-stretch: 125%; font-size: 1.02rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-strong); padding-top: 0.4rem; border-top: 1px solid var(--line-soft); }
.doc-body h3 { margin-top: 2rem; font-size: 1.02rem; color: var(--text-strong); font-weight: 600; }
.doc-body p { margin-top: 1rem; color: var(--muted); }
.doc-body ul, .doc-body ol { margin: 1rem 0 0; padding-left: 1.15rem; color: var(--muted); }
.doc-body li { margin-top: 0.45rem; }
.doc-body li::marker { color: var(--faint); }
.doc-body strong { color: var(--text-strong); font-weight: 600; }
.doc-body .lead { font-size: 1.08rem; color: var(--text); }

.pager { display: flex; justify-content: space-between; gap: 1rem; margin-top: 4rem; padding-top: 1.5rem; border-top: 1px solid var(--line); font-size: 0.88rem; }
.pager a { text-decoration: none; }

/* ---------- footer ---------- */

.site-footer { border-top: 1px solid var(--line); padding: 3.5rem 0 2rem; background: var(--bg-deep); }
.foot-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 2rem; }
.foot-grid h4 { font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--faint); font-weight: 500; }
.foot-grid ul { list-style: none; margin: 0.8rem 0 0; padding: 0; }
.foot-grid li { margin-top: 0.45rem; }
.foot-grid a { color: var(--muted); text-decoration: none; font-size: 0.88rem; }
.foot-grid a:hover { color: var(--text); }
.foot-brand p { margin-top: 0.8rem; color: var(--faint); font-size: 0.85rem; max-width: 30em; }
.foot-bottom { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; margin-top: 2.5rem; padding-top: 1.25rem; border-top: 1px solid var(--line-soft); font-family: var(--font-mono); font-size: 0.68rem; color: var(--faint); }

/* ---------- misc ---------- */

.badge {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-family: var(--font-mono); font-size: 0.64rem; letter-spacing: 0.1em; text-transform: uppercase;
  border: 1px solid var(--line-strong); color: var(--muted);
  padding: 0.22rem 0.5rem; border-radius: 2px;
}
.badge.accent { border-color: var(--accent-dim); color: var(--accent); }

.kv { display: grid; grid-template-columns: 10rem 1fr; gap: 0.35rem 1rem; font-size: 0.9rem; }
.kv dt { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--faint); padding-top: 0.2rem; }
.kv dd { margin: 0; color: var(--muted); }

.cta-band { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: clamp(3rem, 6vw, 4.5rem) 0; }
.cta-band .inner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; flex-wrap: wrap; }
.cta-band h2 { font-family: var(--font-display); font-weight: 600; font-stretch: 125%; font-size: clamp(1.3rem, 2.4vw, 1.8rem); letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-strong); }
.cta-band p { color: var(--muted); margin-top: 0.5rem; max-width: 42em; }

.center-page { min-height: 60vh; display: grid; place-items: center; text-align: center; padding: 5rem 1rem; }
.center-page h1 { font-family: var(--font-display); font-size: clamp(2.5rem, 6vw, 4rem); color: var(--text-strong); }
.center-page p { color: var(--muted); margin-top: 1rem; }

@media (max-width: 900px) {
  .hero-grid, .split, .section-head { grid-template-columns: minmax(0, 1fr); }
  .section-head { align-items: start; }
  .facts { grid-template-columns: repeat(2, 1fr); }
  .facts div:nth-child(2) { border-right: 0; }
  .facts div:nth-child(3), .facts div:nth-child(4) { border-top: 1px solid var(--line-soft); }
  .steps { grid-template-columns: minmax(0, 1fr); }
  .iface-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .invariants { grid-template-columns: 1fr; }
  .invariant:nth-child(odd) { padding-right: 0; border-right: 0; }
  .invariant:nth-child(even) { padding-left: 0; }
  .doc-layout { grid-template-columns: minmax(0, 1fr); padding-top: 2rem; }
  .doc-side { position: static; }
  .doc-side nav { flex-direction: row; flex-wrap: wrap; gap: 0.25rem 1.25rem; }
  .doc-side a { border-left: 0; padding-left: 0; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .wrap { width: min(var(--wrap), 100% - 2rem); }
  .iface-grid { grid-template-columns: minmax(0, 1fr); }
  .facts { grid-template-columns: 1fr; }
  .facts div { border-right: 0; border-top: 1px solid var(--line-soft); }
  .facts div:first-child { border-top: 0; }
  .foot-grid { grid-template-columns: 1fr; }
  .kv { grid-template-columns: 1fr; }
}

/* ---------- faq ---------- */

.faq { margin-top: 1rem; }
.faq details { border-top: 1px solid var(--line); padding: 1.15rem 0; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none;
  display: flex; justify-content: space-between; align-items: baseline; gap: 1.5rem;
  color: var(--text-strong); font-weight: 500; font-size: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--font-mono); color: var(--accent); font-size: 1.1rem; }
.faq details[open] summary::after { content: "−"; }
.faq .answer { margin-top: 0.8rem; color: var(--muted); max-width: 72ch; }
.faq .answer p + p { margin-top: 0.7rem; }

@media (max-width: 720px) {
  .header-tools .hide-sm { display: none; }
}