/* ============================================================
   SUBSTRATE — "The Control Plane" identity
   Tokens + console apparatus. See SPEC.md.
   ============================================================ */

:root {
  --ground: #0D1220;
  --panel: #161D30;
  --panel-2: #1B2340;
  --grid: #232C45;
  --grid-faint: rgba(35, 44, 69, 0.5);
  --line-hi: #334063;
  --text: #E6EAF4;
  --text-2: #A9B3CB;
  --text-3: #7C88A6;
  --cyan: #56C8D8;
  --cyan-wash: rgba(86, 200, 216, 0.10);
  --amber: #E8A33D;
  --amber-wash: rgba(232, 163, 61, 0.10);
  --violet: #8F84D8;
  --ink: #0A101E;

  --font-display: "Archivo", "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  --wrap: 1160px;
  --radius: 2px;
}

/* ---------- base ---------- */

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

html { scroll-behavior: auto; }

body {
  margin: 0;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.6;
  background-color: var(--ground);
  background-image:
    linear-gradient(var(--grid-faint) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-faint) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; height: auto; }

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

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

::selection { background: var(--cyan); color: var(--ink); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-stretch: 112%;
  line-height: 1.1;
  margin: 0 0 0.5em;
  letter-spacing: 0.01em;
}

p { margin: 0 0 1em; }

.wrap {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: 24px;
}

.mono { font-family: var(--font-mono); }
.u-cyan { color: var(--cyan); }
.u-amber { color: var(--amber); }
.u-dim { color: var(--text-3); }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 16px; top: -48px;
  z-index: 50;
  background: var(--cyan);
  color: var(--ink);
  padding: 8px 14px;
  font-weight: 600;
  border-radius: var(--radius);
  transition: none;
}
.skip-link:focus-visible { top: 12px; text-decoration: none; }

/* ---------- status strip ---------- */

.statusbar {
  border-bottom: 1px solid var(--grid);
  background: rgba(13, 18, 32, 0.75);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-3);
}
.statusbar .wrap {
  display: flex;
  align-items: center;
  gap: 22px;
  min-height: 34px;
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: none;
}
.statusbar .wrap::-webkit-scrollbar { display: none; }
.statusbar strong { color: var(--text-2); font-weight: 500; }
.statusbar .spacer { flex: 1; }

.dot {
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  margin-right: 7px;
  vertical-align: 1px;
}
.dot--amber { background: var(--amber); }
.dot--idle { background: var(--text-3); }

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(13, 18, 32, 0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--grid);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 62px;
}

.brand {
  font-family: var(--font-display);
  font-stretch: 122%;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.08em;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 9px;
}
.brand:hover { text-decoration: none; }
.brand .brand-mark { flex: none; display: block; }

.nav-toggle {
  display: none;
  margin-left: auto;
  background: none;
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 8px 12px;
  cursor: pointer;
}
.nav-toggle:hover { border-color: var(--line-hi); }

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.site-nav a {
  color: var(--text-2);
  font-size: 14.5px;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: var(--radius);
}
.site-nav a:hover { color: var(--text); text-decoration: none; }
.site-nav a[aria-current="page"] {
  color: var(--cyan);
}
.site-nav .nav-cta {
  margin-left: 10px;
  color: var(--ink);
  background: var(--cyan);
  font-weight: 600;
}
.site-nav .nav-cta:hover { color: var(--ink); background: #6FD3E1; }

/* ---------- buttons ---------- */

.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  padding: 12px 22px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary { background: var(--cyan); color: var(--ink); }
.btn-primary:hover { background: #6FD3E1; text-decoration: none; }
.btn-ghost { border-color: var(--grid); color: var(--text); background: transparent; }
.btn-ghost:hover { border-color: var(--line-hi); text-decoration: none; }

/* ---------- panels ---------- */

.panel {
  background: var(--panel);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  padding: 26px;
}
.panel:hover { border-color: var(--line-hi); }
.panel--static:hover { border-color: var(--grid); }

.panel--tick { position: relative; }
.panel--tick::before,
.panel--tick::after {
  content: "";
  position: absolute;
  width: 10px; height: 10px;
  border: 0 solid var(--text-3);
  pointer-events: none;
}
.panel--tick::before {
  top: -1px; left: -1px;
  border-top-width: 2px; border-left-width: 2px;
}
.panel--tick::after {
  bottom: -1px; right: -1px;
  border-bottom-width: 2px; border-right-width: 2px;
}

.panel-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
  margin: 0 0 14px;
}

/* ---------- section headers ---------- */

.section { padding: 72px 0; }

.sec-head {
  display: flex;
  align-items: baseline;
  gap: 18px;
  border-bottom: 1px solid var(--grid);
  padding-bottom: 14px;
  margin-bottom: 36px;
}
.sec-head .eyebrow { margin: 0; }
.sec-head .sec-ref {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-3);
  white-space: nowrap;
}

.eyebrow {
  font-family: var(--font-display);
  font-stretch: 120%;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 14px;
}
.eyebrow--amber { color: var(--amber); }

.display-xl {
  font-size: clamp(34px, 5.4vw, 58px);
  font-weight: 700;
  font-stretch: 118%;
  text-transform: uppercase;
  letter-spacing: 0.015em;
}
.display-l {
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 700;
  font-stretch: 115%;
}
.display-m {
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 600;
  font-stretch: 112%;
}

.lede {
  font-size: 19px;
  line-height: 1.65;
  color: var(--text-2);
  max-width: 56ch;
}

/* ---------- grids ---------- */

.grid-2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 22px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }

/* ---------- readouts / telemetry ---------- */

.readout-strip {
  border-block: 1px solid var(--grid);
  background: rgba(22, 29, 48, 0.6);
}
.readout-strip .wrap {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  padding-block: 26px;
}
.readout { border-left: 1px solid var(--grid); padding-left: 18px; }
.readout .value {
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 500;
  color: var(--text);
  display: block;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}
.readout .value .unit { font-size: 0.62em; color: var(--text-3); margin-left: 2px; }
.readout .label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
}

/* ---------- topology / legend ---------- */

.topology-panel { padding: 18px 18px 14px; }
.topology-panel svg { display: block; width: 100%; }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--text-3);
}
.legend .key {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.legend .swatch {
  display: inline-block;
  width: 18px; height: 0;
  border-top: 2px solid var(--cyan);
}
.legend .swatch--amber { border-top-style: dashed; border-top-color: var(--amber); }
.legend .swatch--drained { border-top-color: var(--text-3); opacity: 0.6; }

/* topology svg internals */
.t-edge { stroke: var(--cyan); stroke-width: 1.5; fill: none; opacity: 0.65; }
.t-edge--amber { stroke: var(--amber); stroke-dasharray: 6 5; opacity: 0.9; }
.t-edge--drained { stroke: var(--text-3); opacity: 0.3; }
.t-node circle.core { fill: var(--panel-2); stroke: var(--cyan); stroke-width: 1.5; }
.t-node.t-node--amber circle.core { stroke: var(--amber); }
.t-node circle.halo { fill: none; stroke: var(--cyan); stroke-width: 1; opacity: 0.28; }
.t-node.t-node--amber circle.halo { stroke: var(--amber); }
.t-node text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  fill: var(--text-2);
}
.t-breathe { transform-box: fill-box; transform-origin: center; }

.packet {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  position: absolute;
}
/* svg packets */
circle.pk { fill: var(--cyan); }
circle.pk--amber { fill: var(--amber); }
.pk-motion { offset-rotate: 0deg; }

/* ---------- feature panels ---------- */

.cap-panel h3 { margin-top: 4px; }
.cap-panel p { color: var(--text-2); font-size: 15.5px; margin-bottom: 0; }
.cap-panel .cap-diagram {
  margin: 0 0 16px;
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  background: var(--ground);
  padding: 10px;
}
.cap-panel .mono-note {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--grid);
}

/* ---------- decision timeline (amber apparatus) ---------- */

.timeline { border-left: 2px solid var(--grid); margin: 0; padding: 0 0 0 26px; list-style: none; }
.timeline li { position: relative; padding-bottom: 26px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: "";
  position: absolute;
  left: -33px; top: 6px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--ground);
  border: 2px solid var(--cyan);
}
.timeline li.is-decision::before { border-color: var(--amber); background: var(--amber); }
.timeline .t-time {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-3);
  display: block;
  margin-bottom: 2px;
}
.timeline .t-body { color: var(--text-2); font-size: 15.5px; }
.timeline li.is-decision .t-body { color: var(--text); }
.timeline .t-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
  border: 1px solid rgba(232, 163, 61, 0.45);
  background: var(--amber-wash);
  border-radius: var(--radius);
  padding: 1px 7px;
  margin-left: 8px;
  white-space: nowrap;
}

/* ---------- quote ---------- */

.quote-panel { padding: 40px; }
.quote-panel blockquote {
  margin: 0;
  font-family: var(--font-display);
  font-stretch: 108%;
  font-weight: 500;
  font-size: clamp(20px, 2.6vw, 27px);
  line-height: 1.35;
}
.quote-panel figcaption {
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-3);
}

/* ---------- features page ---------- */

.feature-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 44px;
  align-items: start;
}
.feature-index {
  position: sticky;
  top: 96px;
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 18px;
}
.feature-index ol {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  gap: 2px;
}
.feature-index a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  color: var(--text-2);
  font-size: 14px;
  padding: 7px 8px;
  border-radius: var(--radius);
}
.feature-index a:hover { color: var(--text); text-decoration: none; background: var(--panel-2); }
.feature-index .idx {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-3);
}
.feature-block { margin-bottom: 26px; scroll-margin-top: 110px; }
.feature-block .feature-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 12px;
}
.feature-block .feature-head .idx {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-3);
}
.feature-block h2 { margin: 0; }
.feature-cols {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 26px;
  align-items: center;
}
.feature-cols .fig {
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  background: var(--ground);
  padding: 14px;
  margin: 0;
}
.feature-cols .fig figcaption {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 10px;
}
.spec-list { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 9px; }
.spec-list li {
  display: flex;
  gap: 12px;
  font-size: 15px;
  color: var(--text-2);
  align-items: baseline;
  min-width: 0;
}
.spec-list li > span { min-width: 0; }
.spec-list a { overflow-wrap: anywhere; }
.spec-list li::before {
  content: "▸";
  color: var(--cyan);
  font-size: 12px;
  flex: none;
}
.spec-list li.attn::before { content: "▲"; color: var(--amber); }

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

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
}
.data-table th {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 500;
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line-hi);
}
.data-table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--grid);
  color: var(--text-2);
}
.data-table td:first-child { color: var(--text); }
.data-table .num { font-family: var(--font-mono); font-size: 13.5px; }
.table-scroll { overflow-x: auto; }

/* ---------- pricing ---------- */

.tiers {
  display: grid;
  grid-template-columns: repeat(var(--tier-count, 3), minmax(0, 1fr));
  gap: 22px;
  align-items: stretch;
}
.tier { display: flex; flex-direction: column; }
.tier--lead { border-color: var(--line-hi); background: var(--panel-2); }
.tier .tier-name {
  font-family: var(--font-display);
  font-stretch: 120%;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 15px;
  margin: 0 0 4px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.tier .tier-tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--amber);
  border: 1px solid rgba(232, 163, 61, 0.45);
  background: var(--amber-wash);
  border-radius: var(--radius);
  padding: 1px 7px;
  font-weight: 400;
}
.tier .tier-for { color: var(--text-3); font-size: 13.5px; margin-bottom: 18px; }
.tier .price {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 500;
  line-height: 1;
  margin-bottom: 2px;
  font-variant-numeric: tabular-nums;
}
.tier .price .per { font-size: 13px; color: var(--text-3); }
.tier .price-note {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  margin-bottom: 20px;
}
.tier ul {
  list-style: none;
  margin: 0 0 24px;
  padding: 18px 0 0;
  border-top: 1px solid var(--grid);
  display: grid;
  gap: 9px;
  font-size: 14.5px;
  color: var(--text-2);
}
.tier ul li { display: flex; gap: 10px; align-items: baseline; }
.tier ul li::before { content: "▸"; color: var(--cyan); font-size: 11px; flex: none; }
.tier .btn { margin-top: auto; text-align: center; }

/* ---------- FAQ ---------- */

.faq { display: grid; gap: 10px; max-width: 780px; }
.faq details {
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  background: var(--panel);
}
.faq details[open] { border-color: var(--line-hi); }
.faq summary {
  cursor: pointer;
  padding: 16px 20px;
  font-weight: 600;
  font-size: 15.5px;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 12px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before {
  content: "+";
  font-family: var(--font-mono);
  color: var(--cyan);
  flex: none;
}
.faq details[open] summary::before { content: "−"; }
.faq .faq-body { padding: 0 20px 18px 42px; color: var(--text-2); font-size: 15px; }
.faq .faq-body p:last-child { margin-bottom: 0; }

/* ---------- about ---------- */

.principles { counter-reset: rule; }
.principles .panel { position: relative; }
.principles .rule-no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.12em;
  display: block;
  margin-bottom: 10px;
}
.changelog { list-style: none; margin: 0; padding: 0; }
.changelog li {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 22px;
  padding: 18px 0;
  border-bottom: 1px solid var(--grid);
}
.changelog .cl-date {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-3);
  padding-top: 2px;
}
.changelog .cl-body strong { display: block; margin-bottom: 3px; }
.changelog .cl-body p { color: var(--text-2); font-size: 15px; margin: 0; }

.team-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.team-card .t-avatar {
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  background: var(--ground);
  margin-bottom: 14px;
  display: block;
}
.team-card h3 { font-size: 17px; margin-bottom: 2px; }
.team-card .t-role {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 8px;
}
.team-card p { color: var(--text-2); font-size: 14.5px; margin: 0; }

/* ---------- blog ---------- */

.post-rows { display: grid; }
.post-row {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr) 200px;
  gap: 26px;
  padding: 26px 8px;
  border-bottom: 1px solid var(--grid);
  align-items: baseline;
}
.post-row:hover { background: rgba(22, 29, 48, 0.5); }
.post-row .p-date {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-3);
}
.post-row h2, .post-row h3 { font-size: 20px; margin: 0 0 6px; }
.post-row h2 a, .post-row h3 a { color: var(--text); }
.post-row h2 a:hover, .post-row h3 a:hover { color: var(--cyan); text-decoration: none; }
.post-row p { color: var(--text-2); font-size: 15px; margin: 0; }
.post-row .p-meta {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-3);
  text-align: right;
}
.post-row .p-meta .p-tag { color: var(--cyan); display: block; margin-bottom: 3px; }
.post-row.is-featured { border-top: 1px solid var(--line-hi); }

/* ---------- article ---------- */

.article-head { max-width: 820px; }
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-3);
  border-block: 1px solid var(--grid);
  padding-block: 12px;
  margin: 26px 0 40px;
}
.article { max-width: 68ch; }
.article p { color: var(--text-2); }
.article h2 {
  font-size: 22px;
  margin: 1.9em 0 0.6em;
}
.article strong { color: var(--text); }
.article .drop { color: var(--text); font-size: 18.5px; }
.pullquote {
  border-left: 2px solid var(--amber);
  margin: 2em 0;
  padding: 4px 0 4px 22px;
  font-family: var(--font-display);
  font-stretch: 108%;
  font-size: 21px;
  line-height: 1.4;
  color: var(--text);
}
figure.telemetry {
  margin: 2em 0;
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 18px;
}
figure.telemetry pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-2);
  overflow-x: auto;
}
figure.telemetry .hl-amber { color: var(--amber); }
figure.telemetry .hl-cyan { color: var(--cyan); }
figure.telemetry figcaption {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-top: 12px;
}
.post-nav {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  border-top: 1px solid var(--grid);
  padding-top: 26px;
  margin-top: 56px;
  font-size: 14.5px;
}

/* .p-tag and .mono-note reused outside their originally-scoped ancestors
   (.post-row .p-meta / .cap-panel) by family-builder-platform-blog.ts's
   article-head and sources line — unscoped variants so they render styled
   in that context too. */
.article-meta .p-tag { color: var(--cyan); }
.article .mono-note {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  margin: 1.5em 0 0;
}

/* ---------- contact ---------- */

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 26px;
  align-items: start;
}
.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 7px;
}
.field input, .field select, .field textarea {
  width: 100%;
  background: var(--ground);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 11px 13px;
}
.field input:hover, .field select:hover, .field textarea:hover { border-color: var(--line-hi); }
.field textarea { resize: vertical; min-height: 120px; }
.field .hint { font-size: 13px; color: var(--text-3); margin: 6px 0 0; }

.endpoint-list { list-style: none; margin: 0; padding: 0; font-family: var(--font-mono); font-size: 13.5px; }
.endpoint-list li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 2px;
  border-bottom: 1px solid var(--grid);
  color: var(--text-2);
}
.endpoint-list li:last-child { border-bottom: 0; }
.endpoint-list .ep-region { color: var(--text); width: 4ch; flex: none; }
.endpoint-list .ep-fill {
  flex: 1;
  border-bottom: 1px dotted var(--grid);
  transform: translateY(-4px);
}
.endpoint-list .ep-ms { font-variant-numeric: tabular-nums; }
.endpoint-list .ep-ms.attn { color: var(--amber); }

.form-result {
  border: 1px solid rgba(86, 200, 216, 0.45);
  background: var(--cyan-wash);
  border-radius: var(--radius);
  padding: 18px 20px;
  font-size: 15px;
}
.form-result .mono { font-size: 12.5px; color: var(--text-3); display: block; margin-top: 6px; }

/* ---------- 404 traceroute ---------- */

.notfound {
  min-height: 60vh;
  display: grid;
  align-content: start;
  gap: 40px;
  padding-top: 64px;
}
.trace {
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  display: grid;
  gap: 2px;
}
.trace li {
  display: flex;
  gap: 18px;
  padding: 8px 2px;
  color: var(--text-2);
  align-items: baseline;
}
.trace .hop-no { color: var(--text-3); width: 2ch; text-align: right; flex: none; }
.trace .hop-host { min-width: 24ch; }
.trace .hop-ms { color: var(--text-3); font-variant-numeric: tabular-nums; }
.trace li.ok .hop-host { color: var(--cyan); }
.trace li.dead { color: var(--amber); }
.trace li.dead .hop-host { color: var(--amber); }
.nf-code {
  font-family: var(--font-display);
  font-stretch: 125%;
  font-weight: 700;
  font-size: clamp(64px, 12vw, 128px);
  line-height: 1;
  letter-spacing: 0.04em;
  margin: 0;
}

/* ---------- CTA band ---------- */

.cta-band {
  border-block: 1px solid var(--grid);
  background: var(--panel);
}
.cta-band .wrap {
  padding-block: 56px;
  display: grid;
  gap: 20px;
  justify-items: start;
}
.cta-band .display-l { margin: 0; max-width: 22ch; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; }

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

.site-footer {
  border-top: 1px solid var(--grid);
  background: rgba(13, 18, 32, 0.85);
  margin-top: 72px;
  font-size: 14px;
}
.site-footer .wrap {
  padding-block: 48px 36px;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: 36px;
}
.site-footer h3 {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 14px;
}
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.site-footer a { color: var(--text-2); }
.site-footer a:hover { color: var(--text); }
.footer-brand p { color: var(--text-3); font-size: 13.5px; max-width: 30ch; }
.footer-meta {
  border-top: 1px solid var(--grid);
}
.footer-meta .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  align-items: center;
  padding-block: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
}
.footer-meta .spacer { flex: 1; }

/* ---------- hero (home) ---------- */

.hero { padding: 76px 0 64px; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 44px;
  align-items: center;
}
.hero h1 { margin-bottom: 20px; }
.hero .lede { margin-bottom: 30px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.hero-actions .mono-aside {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-3);
}

/* ---------- responsive ---------- */

@media (max-width: 980px) {
  .hero-grid, .feature-cols, .contact-layout { grid-template-columns: minmax(0, 1fr); }
  .grid-3, .team-grid, .tiers { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .feature-layout { grid-template-columns: minmax(0, 1fr); }
  .feature-index { position: static; }
  .site-footer .wrap { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .readout-strip .wrap { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .post-row { grid-template-columns: 120px minmax(0, 1fr); }
  .post-row .p-meta { grid-column: 2; text-align: left; display: flex; gap: 14px; }
  .post-row .p-meta .p-tag { margin-bottom: 0; }
}

@media (max-width: 820px) {
  .nav-toggle { display: inline-block; }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--ground);
    border-bottom: 1px solid var(--grid);
    padding: 10px 24px 18px;
    gap: 2px;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 11px 10px; font-size: 16px; }
  .site-nav .nav-cta { margin-left: 0; margin-top: 8px; text-align: center; }
}

@media (max-width: 560px) {
  .grid-3, .grid-2, .team-grid, .tiers { grid-template-columns: minmax(0, 1fr); }
  .readout-strip .wrap { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .section { padding: 52px 0; }
  .hero { padding: 52px 0 44px; }
  .changelog li { grid-template-columns: 1fr; gap: 4px; }
  .post-row { grid-template-columns: minmax(0, 1fr); gap: 6px; padding-inline: 2px; }
  .sec-head { flex-wrap: wrap; gap: 8px; }
  .sec-head .sec-ref { margin-left: 0; width: 100%; }
  .quote-panel { padding: 26px; }
  .trace .hop-host { min-width: 0; }
  .site-footer .wrap { grid-template-columns: 1fr; }
}

/* ============================================================
   MOTION — everything animated lives below this line,
   gated on prefers-reduced-motion. Reduced-motion users get
   final states (packets sit mid-edge via static offset-distance
   set inline per packet).
   ============================================================ */

@media (prefers-reduced-motion: no-preference) {

  @keyframes flow {
    from { offset-distance: 0%; }
    to { offset-distance: 100%; }
  }
  @keyframes breathe {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.045); }
  }
  @keyframes dash-drift {
    to { stroke-dashoffset: -22; }
  }
  @keyframes halo-pulse {
    0%, 100% { opacity: 0.28; }
    50% { opacity: 0.08; }
  }

  .pk-motion { animation: flow var(--pk-dur, 5.5s) linear infinite; animation-delay: var(--pk-delay, 0s); }
  .t-breathe { animation: breathe 5s ease-in-out infinite; animation-delay: var(--br-delay, 0s); }
  .t-edge--amber { animation: dash-drift 1.6s linear infinite; }
  .t-node circle.halo { animation: halo-pulse 5s ease-in-out infinite; animation-delay: var(--br-delay, 0s); }

  /* load cascade — armed only when JS confirms motion (html.motion-ok),
     so no-JS users always see content */
  .motion-ok [data-cascade] > * {
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.55s ease, transform 0.55s ease;
  }
  .motion-ok [data-cascade] > *.in {
    opacity: 1;
    transform: none;
  }

  .trace li { transition: opacity 0.3s ease; }
  .motion-ok .trace.pending li { opacity: 0; }
  .motion-ok .trace li.shown { opacity: 1; }
}

.nav__item--dropdown { position: relative; }
.nav__dropdown-trigger { background: none; border: none; font: inherit; color: inherit; cursor: pointer; padding: 0; display: inline-flex; align-items: center; gap: .35em; }
.nav__dropdown-caret { width: .6em; height: .6em; transition: transform .15s ease; }
.nav__dropdown-trigger[aria-expanded="true"] .nav__dropdown-caret { transform: rotate(180deg); }
.nav__dropdown-trigger[aria-current="page"] { font-weight: 600; }
.nav__dropdown-panel { position: absolute; top: calc(100% + 14px); left: 50%; transform: translateX(-50%); display: grid; grid-auto-flow: column; gap: 32px; padding: 24px; background: var(--menu-bg, #fff); color: var(--menu-text, #111); border: 1px solid var(--menu-border, rgba(0,0,0,.08)); border-radius: var(--menu-radius, 10px); box-shadow: 0 12px 32px rgba(0,0,0,.14); min-width: 480px; z-index: 200; }
.nav__dropdown-panel[hidden] { display: none; }
.nav__dropdown-heading { font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; opacity: .6; margin-bottom: 10px; }
.nav__dropdown-group ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.nav__dropdown-group a { display: block; text-decoration: none; color: inherit; font-size: .92rem; }
.nav__dropdown-group a:hover { opacity: .7; }
.nav__dropdown-desc { display: block; font-size: .8rem; opacity: .6; margin-top: 2px; }
@media (max-width: 760px) {
  .nav__dropdown-panel { position: static; transform: none; min-width: 0; grid-auto-flow: row; box-shadow: none; border: none; padding: 12px 0 12px 16px; }
}