/* =========================================================================
   Synthien UI · shared design system
   One source of truth for tokens, layout, components, and motion.
   Loaded by Archive, Directory, Console, and the marketing site.
   ========================================================================= */

:root {
  color-scheme: dark;

  /* Ink — warm graphite. Deliberately NOT blue-black. */
  --syn-ink-1000: #0a0b0c;
  --syn-ink-900:  #0d0e10;
  --syn-ink-850:  #111315;
  --syn-ink-800:  #15171a;
  --syn-ink-700:  #1b1e22;
  --syn-ink-600:  #23272c;

  /* Lines — bone-toned, not pure white. Keeps the warm undercurrent. */
  --syn-line:        rgba(236, 233, 226, 0.07);
  --syn-line-strong: rgba(236, 233, 226, 0.14);

  /* Text — bone white on graphite. High contrast but never bluish. */
  --syn-text:       #ece9e2;
  --syn-text-mute:  rgba(236, 233, 226, 0.72);
  --syn-text-dim:   rgba(236, 233, 226, 0.52);
  --syn-text-faint: rgba(236, 233, 226, 0.30);

  /* Accent — phosphor green. Single saturated colour, used with restraint. */
  --syn-acid:        #c7ff3d;
  --syn-acid-hot:    #d4ff5c;
  --syn-acid-deep:   #8fbf20;
  --syn-acid-soft:   rgba(199, 255, 61, 0.18);
  --syn-acid-faint:  rgba(199, 255, 61, 0.08);
  --syn-acid-glow:   0 0 24px rgba(199, 255, 61, 0.22);

  /* Legacy brand aliases — kept pointing at the new accent so older rules
     (btn-primary, eyebrow dash, card--glow etc.) inherit automatically. */
  --syn-brand-a:     #c7ff3d;
  --syn-brand-b:     #d4ff5c;
  --syn-brand:       #c7ff3d;
  --syn-brand-soft:  rgba(199, 255, 61, 0.12);
  --syn-brand-glow:  0 0 24px rgba(199, 255, 61, 0.22);

  /* Surface eyebrow tint — three subtle per-surface monotones, never as fill. */
  --syn-accent-archive:   #ece9e2;   /* bone       — reading / human */
  --syn-accent-directory: #c7ff3d;   /* phosphor   — identity / signal */
  --syn-accent-console:   #e0a05c;   /* ember      — operator / status */

  /* Status — semantic only. Muted so they don't compete with the accent. */
  --syn-ok:   #b6e04a;
  --syn-warn: #e0a05c;
  --syn-bad:  #e66b6b;
  --syn-idle: rgba(236, 233, 226, 0.28);

  /* Elevation */
  --syn-shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.42);
  --syn-shadow:      0 22px 64px rgba(0, 0, 0, 0.52);

  /* Radii — deliberately tight. Agency pages don't pillow everything. */
  --syn-radius-sm: 6px;
  --syn-radius:    10px;
  --syn-radius-lg: 14px;
  --syn-radius-xl: 20px;

  /* Layout */
  --syn-shell-width: 1240px;
  --syn-page-padding: clamp(18px, 3vw, 36px);
  --syn-measure: 62ch;
  --syn-measure-wide: 82ch;

  /* Motion */
  --syn-ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --syn-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --syn-dur-fast: 140ms;
  --syn-dur: 240ms;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

/* ---------- Body + background ---------- */
.syn-body {
  min-height: 100vh;
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  font-feature-settings: 'ss01' on, 'cv11' on, 'zero' on;
  color: var(--syn-text);
  background: var(--syn-ink-1000);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  position: relative;
  overflow-x: hidden;
}

/* Background is intentionally austere: a fixed grid and a faint horizontal
   scanline, nothing else. No drifting gradient blobs. The phosphor accent
   only appears where the product explicitly earns it (CTAs, signal strokes,
   the hero rule). */
.syn-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.syn-bg-grid {
  position: absolute;
  inset: -1px;
  background-image:
    linear-gradient(to right,  rgba(236, 233, 226, 0.028) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(236, 233, 226, 0.028) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% -10%,
    rgba(0, 0, 0, 0.95) 0%,
    rgba(0, 0, 0, 0.55) 48%,
    rgba(0, 0, 0, 0.15) 82%,
    transparent 100%);
}
.syn-bg-scanline {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 3px,
    rgba(236, 233, 226, 0.012) 3px,
    rgba(236, 233, 226, 0.012) 4px
  );
  mix-blend-mode: overlay;
  opacity: 0.6;
}

/* ---------- Topbar ----------
   Flat hairline bar, no rounded pill. Monospace nav labels for consistency
   with the rest of the editorial/instrument rhythm. */
.syn-topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 11, 12, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--syn-line);
}
.syn-topbar-inner {
  max-width: var(--syn-shell-width);
  margin: 0 auto;
  padding: 14px var(--syn-page-padding);
  display: grid;
  grid-template-columns: auto auto 1fr auto;
  align-items: center;
  gap: 18px;
}
.syn-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--syn-text);
  text-decoration: none;
  font-family: 'Instrument Serif', serif;
  font-weight: 400;
  letter-spacing: -0.01em;
  font-size: 1.2rem;
}
.syn-brand:hover { text-decoration: none; }
.syn-brand-mark { flex-shrink: 0; }
.syn-brand-label { white-space: nowrap; }

/* Surface switch — flat pill row with a phosphor underline for active. */
.syn-switch {
  display: inline-flex;
  padding: 0;
  border-radius: 0;
  border: 0;
  background: transparent;
  gap: 0;
}
.syn-switch-item {
  padding: 10px 14px;
  border-radius: 0;
  color: var(--syn-text-dim);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.74rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--syn-dur-fast) var(--syn-ease),
              border-color var(--syn-dur-fast) var(--syn-ease);
}
.syn-switch-item:hover {
  color: var(--syn-text);
  background: transparent;
  text-decoration: none;
}
.syn-switch-item.is-active {
  background: transparent;
  color: var(--syn-text);
  border-bottom-color: var(--syn-acid);
  box-shadow: none;
}

.syn-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  justify-self: end;
}
.syn-nav a {
  padding: 10px 14px;
  border-radius: 0;
  color: var(--syn-text-dim);
  text-decoration: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.74rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  border-bottom: 1px solid transparent;
  transition: color var(--syn-dur-fast) var(--syn-ease),
              border-color var(--syn-dur-fast) var(--syn-ease);
}
.syn-nav a:hover {
  background: transparent;
  color: var(--syn-text);
  text-decoration: none;
}
.syn-nav a.is-active {
  color: var(--syn-text);
  background: transparent;
  box-shadow: none;
  border-bottom-color: var(--syn-acid);
}

.syn-topbar-actions { justify-self: end; }

.syn-session-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 14px 7px 10px;
  border-radius: var(--syn-radius-sm);
  border: 1px solid var(--syn-line);
  background: transparent;
  color: var(--syn-text);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
}
.syn-session-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--syn-acid);
  box-shadow: 0 0 0 2px rgba(199, 255, 61, 0.18);
}

/* ---------- Main ---------- */
.syn-main {
  position: relative;
  z-index: 1;
  max-width: var(--syn-shell-width);
  margin: 0 auto;
  padding: 32px var(--syn-page-padding) 88px;
}

/* ---------- Typography ----------
   Display pairing: Instrument Serif (distinctive editorial serif) for headings
   and marquee numbers, Inter for UI, JetBrains Mono for data. The serif is
   what lifts the page out of "AI SaaS dashboard" territory. */
h1, .h1, .syn-display {
  font-family: 'Instrument Serif', 'Times New Roman', serif;
  margin: 0;
  font-size: clamp(2.6rem, 6vw, 5.2rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  text-wrap: balance;
  font-weight: 400;
  font-feature-settings: 'liga' on, 'dlig' on;
}
h1 em, .h1 em, .syn-display em {
  font-style: italic;
  color: var(--syn-text-mute);
}
h2 {
  font-family: 'Instrument Serif', 'Times New Roman', serif;
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  letter-spacing: -0.015em;
  line-height: 1.1;
  text-wrap: balance;
  font-weight: 400;
}
h3 {
  font-family: 'Inter', ui-sans-serif, sans-serif;
  margin: 0 0 6px;
  font-size: 0.98rem;
  letter-spacing: 0;
  text-wrap: balance;
  font-weight: 600;
}
.syn-display-numeric {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(3rem, 7vw, 5.4rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: lining-nums tabular-nums;
}
p {
  margin: 6px 0;
  color: var(--syn-text-mute);
  line-height: 1.68;
  max-width: var(--syn-measure);
  text-wrap: pretty;
}
.muted { color: var(--syn-text-dim); }
.subtle { color: var(--syn-text-faint); font-size: 0.86rem; letter-spacing: 0.01em; }

/* Editorial eyebrow — monospace caps with a phosphor rule. Used as section
   marker, never as a "hot tag". */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--syn-text-mute);
  margin: 0 0 18px;
}
.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--syn-acid);
  opacity: 0.8;
}

/* Editorial rule — thin full-width section divider the page uses as rhythm. */
.syn-rule {
  display: block;
  width: 100%;
  height: 1px;
  margin: 44px 0 32px;
  background: var(--syn-line);
  border: 0;
}

/* Pull-quote — distinct serif block, works as a section break. */
.pull-quote {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-style: italic;
  line-height: 1.25;
  color: var(--syn-text);
  margin: 36px 0;
  padding-left: 20px;
  border-left: 1px solid var(--syn-acid);
  max-width: 34ch;
}
.pull-quote cite {
  display: block;
  margin-top: 14px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  font-style: normal;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--syn-text-faint);
}

a {
  color: var(--syn-text);
  text-decoration: underline;
  text-decoration-color: var(--syn-line-strong);
  text-underline-offset: 3px;
  transition: text-decoration-color var(--syn-dur-fast) var(--syn-ease),
              color var(--syn-dur-fast) var(--syn-ease);
}
a:hover {
  color: var(--syn-acid);
  text-decoration-color: var(--syn-acid);
}

code, kbd, samp {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.86em;
  font-variant-numeric: tabular-nums;
  background: rgba(236, 233, 226, 0.04);
  border: 1px solid var(--syn-line);
  border-radius: 4px;
  padding: 1px 6px;
  color: var(--syn-text);
  overflow-wrap: anywhere;
  word-break: break-word;
}
pre {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  background: var(--syn-ink-900);
  border: 1px solid var(--syn-line);
  border-radius: var(--syn-radius);
  padding: 16px 18px;
  color: var(--syn-text-mute);
  font-size: 0.84rem;
  line-height: 1.6;
  overflow-x: auto;
}
pre code {
  background: transparent;
  border: 0;
  padding: 0;
  font-size: inherit;
}

ul.compact, ol.compact {
  padding-left: 20px;
  margin: 10px 0;
  line-height: 1.72;
  max-width: var(--syn-measure);
}
ul.compact li, ol.compact li {
  color: var(--syn-text-mute);
  margin-bottom: 4px;
}

/* ---------- Cards ----------
   Flat, square-ish, confident. Agency pages don't pillow everything in
   gradient fills — they use restraint and let typography + whitespace do
   the work. Cards now have one thin hairline border and a very subtle
   inner surface. */
.card, .syn-card {
  position: relative;
  background: rgba(236, 233, 226, 0.015);
  border: 1px solid var(--syn-line);
  border-radius: var(--syn-radius);
  padding: 24px;
  margin: 14px 0;
  min-width: 0;
  transition: transform var(--syn-dur) var(--syn-ease),
              border-color var(--syn-dur) var(--syn-ease),
              background var(--syn-dur) var(--syn-ease);
}
.card h1, .card h2, .card h3 { margin-top: 0; }
.card + .card { margin-top: 14px; }

a.card,
a.card:hover {
  text-decoration: none;
  color: inherit;
}
a.card:hover,
.card.is-interactive:hover {
  transform: translateY(-1px);
  border-color: var(--syn-acid);
  background: rgba(199, 255, 61, 0.03);
}

.card--flat {
  background: transparent;
  border: 1px solid var(--syn-line);
  box-shadow: none;
}

/* Hero is a full-bleed editorial band rather than a rounded pillow. Framed
   by a single top + bottom hairline, no radial fills. The only colour is
   the phosphor rule across the top. */
.card--hero, .hero-shell {
  position: relative;
  overflow: hidden;
  border-radius: 0;
  border: 0;
  border-top: 1px solid var(--syn-line);
  border-bottom: 1px solid var(--syn-line);
  padding: clamp(32px, 5vw, 64px) 0;
  margin: 0 0 32px;
  background: transparent;
  box-shadow: none;
}
.card--hero::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  width: 14vw;
  max-width: 220px;
  height: 2px;
  background: var(--syn-acid);
  box-shadow: var(--syn-acid-glow);
}
.card--hero > * { position: relative; z-index: 1; max-width: 100%; }

.card--glow {
  border-color: var(--syn-line-strong);
  background: rgba(199, 255, 61, 0.02);
}

/* ---------- Grids ---------- */
.grid, .section-grid, .split-grid, .stats-grid {
  display: grid;
  gap: 14px;
  margin: 14px 0;
  align-items: start;
}
.grid, .section-grid { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.split-grid         { grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr); }
.stats-grid         { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }

.info-rail { display: grid; gap: 12px; }
.rail-card {
  background: transparent;
  border: 1px solid var(--syn-line);
  border-radius: var(--syn-radius);
  padding: 18px 20px;
}
.list-card, .priority-card { background: transparent; border: 1px solid var(--syn-line); border-radius: var(--syn-radius); padding: 18px 20px; min-width: 0; }
.priority-card { border-left: 2px solid var(--syn-acid); }

/* Editorial metric — big serif number on a thin top rule. Feels like
   a print data block, not a dashboard tile. */
.metric {
  background: transparent;
  border: 0;
  border-top: 1px solid var(--syn-line);
  border-radius: 0;
  padding: 18px 0 0;
  min-width: 0;
}
.metric span {
  display: block;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  color: var(--syn-text-dim);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-weight: 500;
  margin-bottom: 10px;
}
.metric strong {
  display: block;
  font-family: 'Inter', system-ui, sans-serif;
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0;
  line-height: 1.4;
  color: var(--syn-text);
  font-variant-numeric: lining-nums tabular-nums;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.metric strong code,
.metric code {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--syn-text);
  background: transparent;
  padding: 0;
}
/* Big display numbers for marketing "data strip" contexts only. */
.data-strip .metric strong,
.metric--display strong {
  font-family: 'Instrument Serif', serif;
  font-weight: 400;
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.02em;
  line-height: 1;
}
.data-strip .metric strong code,
.metric--display strong code {
  font-family: 'Instrument Serif', serif;
  font-size: inherit;
  letter-spacing: -0.02em;
}

/* ---------- Pills / badges — square, restrained, mono ---------- */
.pill, .badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 4px;
  padding: 4px 10px;
  background: transparent;
  border: 1px solid var(--syn-line-strong);
  color: var(--syn-text);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 2px 4px 2px 0;
}
.pill--brand, .badge--brand {
  background: var(--syn-acid-faint);
  border-color: var(--syn-acid);
  color: var(--syn-acid-hot);
}

/* ---------- Buttons — square, understated, one accent ---------- */
.btn, button.syn-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 10px 22px;
  border-radius: var(--syn-radius-sm);
  border: 1px solid var(--syn-line-strong);
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  cursor: pointer;
  text-decoration: none;
  transition: border-color var(--syn-dur-fast) var(--syn-ease),
              color var(--syn-dur-fast) var(--syn-ease),
              background var(--syn-dur-fast) var(--syn-ease);
  background: transparent;
  color: var(--syn-text);
  position: relative;
  overflow: hidden;
}
.btn:hover, button.syn-btn:hover {
  border-color: var(--syn-acid);
  color: var(--syn-acid);
  text-decoration: none;
}
.btn:focus-visible, button.syn-btn:focus-visible {
  outline: 2px solid var(--syn-acid);
  outline-offset: 2px;
}

/* Shared keyboard focus styles. We deliberately scope :focus-visible only,
   so mouse/touch interactions don't get a ring, but keyboard navigation
   always has a high-contrast indicator on the phosphor accent. */
a:focus-visible,
button:focus-visible,
[role="button"]:focus-visible,
[role="tab"]:focus-visible,
.syn-switch-item:focus-visible,
.syn-nav a:focus-visible,
.syn-brand:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--syn-acid);
  outline-offset: 3px;
  border-radius: 6px;
}

input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--syn-acid);
  outline-offset: 2px;
}

/* Honor reduced-motion preferences for the bg scanline + halos. */
@media (prefers-reduced-motion: reduce) {
  .syn-bg-scanline,
  .syn-topology-row.is-ok .syn-topology-dot-halo {
    animation: none !important;
  }
  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}
.btn-primary, button.syn-btn.syn-btn-primary {
  background: var(--syn-acid);
  color: var(--syn-ink-1000);
  border-color: var(--syn-acid);
  font-weight: 600;
}
.btn-primary:hover, button.syn-btn.syn-btn-primary:hover {
  background: var(--syn-acid-hot);
  color: var(--syn-ink-1000);
  border-color: var(--syn-acid-hot);
}
.btn-ghost {
  background: transparent;
  color: var(--syn-text-mute);
  border-color: var(--syn-line);
}

.action-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}
.action-links a, .action-links button {
  text-decoration: none;
  border: 1px solid var(--syn-line);
  background: transparent;
  padding: 8px 14px;
  border-radius: var(--syn-radius-sm);
  color: var(--syn-text-mute);
  font-size: 0.86rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color var(--syn-dur-fast) var(--syn-ease),
              color var(--syn-dur-fast) var(--syn-ease);
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  font-family: 'Inter', sans-serif;
}
.action-links a:hover, .action-links button:hover {
  border-color: var(--syn-acid);
  color: var(--syn-acid);
}
.action-links a.btn-primary, .action-links button.btn-primary {
  background: var(--syn-acid);
  color: var(--syn-ink-1000);
  border-color: var(--syn-acid);
  font-weight: 600;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }

/* ---------- Forms ---------- */
input[type=text], input[type=email], input[type=password], input[type=search], textarea, select {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--syn-radius-sm);
  border: 1px solid var(--syn-line-strong);
  background: var(--syn-ink-900);
  color: var(--syn-text);
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  transition: border-color var(--syn-dur-fast) var(--syn-ease),
              background var(--syn-dur-fast) var(--syn-ease);
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--syn-acid);
  background: var(--syn-ink-850);
  box-shadow: 0 0 0 1px var(--syn-acid);
}
input::placeholder, textarea::placeholder {
  color: var(--syn-text-faint);
}
textarea { min-height: 110px; resize: vertical; font-family: 'JetBrains Mono', monospace; font-size: 0.86rem; }
label {
  display: block;
  margin: 14px 0 6px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--syn-text-dim);
}
.checkbox { display: flex; align-items: center; gap: 12px; margin-top: 12px; }
.checkbox input { width: 16px; height: 16px; accent-color: var(--syn-acid); }

form button:not(.btn-ghost), button[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  margin-top: 14px;
  background: var(--syn-acid);
  color: var(--syn-ink-1000);
  border: 1px solid var(--syn-acid);
  border-radius: var(--syn-radius-sm);
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: background var(--syn-dur-fast) var(--syn-ease);
}
form button:hover:not(.btn-ghost) { background: var(--syn-acid-hot); }

/* ---------- Banners / status ---------- */
.banner {
  border-radius: var(--syn-radius);
  padding: 14px 18px;
  margin-bottom: 18px;
  font-size: 0.95rem;
  border: 1px solid var(--syn-line);
  background: rgba(255,255,255,0.02);
}
.banner-warn { background: rgba(255, 200, 112, 0.08); border-color: rgba(255,200,112,0.22); color: #ffd58a; }
.banner-info { background: rgba(124, 209, 255, 0.08); border-color: rgba(124,209,255,0.22); color: #bfe3ff; }
.banner-bad  { background: rgba(255, 138, 138, 0.08); border-color: rgba(255,138,138,0.22); color: #ffbcbc; }

.status-ok, .health-ok { color: var(--syn-ok); font-weight: 700; }
.status-bad, .health-bad { color: var(--syn-bad); font-weight: 700; }
.status-warn { color: var(--syn-warn); font-weight: 700; }

/* ---------- Footer ---------- */
.syn-footer {
  position: relative;
  z-index: 1;
  max-width: var(--syn-shell-width);
  margin: 40px auto 0;
  padding: 28px var(--syn-page-padding);
  border-top: 1px solid var(--syn-line);
  color: var(--syn-text-faint);
  font-size: 0.84rem;
  text-align: center;
}

/* =========================================================================
   Mesh visualization — instrument panel, phosphor strokes, no halos.
   ========================================================================= */
.syn-mesh { display: block; }
.mesh-edge {
  transition: stroke-opacity var(--syn-dur) var(--syn-ease);
}
.mesh-node-dot {
  fill: var(--syn-text);
}
.mesh-node.is-core .mesh-node-dot {
  fill: var(--syn-acid);
  filter: drop-shadow(0 0 8px rgba(199,255,61,0.6));
}
.mesh-node-halo {
  fill: var(--syn-acid);
  opacity: 0.18;
  transform-origin: center;
  transform-box: fill-box;
}
.mesh-node.is-pulsing .mesh-node-halo {
  animation: syn-node-pulse 3.2s var(--syn-ease-out) infinite;
}
.mesh-node.is-core.is-pulsing .mesh-node-halo {
  animation-duration: 2.6s;
}
@keyframes syn-node-pulse {
  0%   { opacity: 0.08; transform: scale(0.76); }
  50%  { opacity: 0.34; transform: scale(1.12); }
  100% { opacity: 0.08; transform: scale(0.76); }
}

/* =========================================================================
   Topology rail (Archive)
   ========================================================================= */
.syn-topology-rail { padding: 12px; }
.syn-topology { display: block; }
.syn-topology-label {
  fill: var(--syn-text-mute);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}
.syn-topology-edge {
  stroke: url(#syn-topo-grad);
  stroke-width: 1.5;
  stroke-opacity: 0.35;
  stroke-dasharray: 2 3;
}
.syn-topology-dot         { fill: var(--syn-idle); }
.syn-topology-dot-halo    { fill: var(--syn-idle); opacity: 0.14; }
.syn-topology-row.is-ok   .syn-topology-dot { fill: var(--syn-ok); }
.syn-topology-row.is-ok   .syn-topology-dot-halo { fill: var(--syn-ok); opacity: 0.28; animation: syn-topo-pulse 2.4s infinite; }
.syn-topology-row.is-warn .syn-topology-dot { fill: var(--syn-warn); }
.syn-topology-row.is-warn .syn-topology-dot-halo { fill: var(--syn-warn); opacity: 0.22; }
.syn-topology-row.is-bad  .syn-topology-dot { fill: var(--syn-bad); }
.syn-topology-row.is-bad  .syn-topology-dot-halo { fill: var(--syn-bad); opacity: 0.24; }
.syn-topology-empty {
  color: var(--syn-text-faint);
  font-size: 0.84rem;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
}
@keyframes syn-topo-pulse {
  0%   { transform: scale(1); opacity: 0.34; transform-origin: center; }
  50%  { transform: scale(1.25); opacity: 0.12; }
  100% { transform: scale(1); opacity: 0.34; }
}

/* =========================================================================
   Readiness rings (Console)
   ========================================================================= */
.syn-readiness { display: block; }
.syn-ring-track {
  fill: none;
  stroke: rgba(236, 233, 226, 0.06);
  stroke-width: 4;
}
.syn-ring {
  fill: none;
  stroke-width: 4;
  stroke-linecap: butt;
  stroke-dashoffset: 100;
  animation: syn-ring-draw 1100ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: calc(var(--syn-ring-i, 0) * 140ms);
}
@keyframes syn-ring-draw {
  to { stroke-dashoffset: calc(100 - var(--syn-ring-target, 0)); }
}
@media (prefers-reduced-motion: reduce) {
  .syn-ring {
    animation: none;
    stroke-dashoffset: calc(100 - var(--syn-ring-target, 0));
  }
}
.syn-ring-ok   { stroke: var(--syn-acid); }
.syn-ring-warn { stroke: var(--syn-warn); }
.syn-ring-bad  { stroke: var(--syn-bad); }
.syn-ring-idle { stroke: var(--syn-idle); }
.syn-ring-count {
  font-family: 'Instrument Serif', serif;
  font-size: 54px;
  font-weight: 400;
  letter-spacing: -0.02em;
  fill: var(--syn-text);
}
.syn-ring-count-total {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 10px;
  fill: var(--syn-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.16em;
}
.syn-ring-legend text {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 11px;
  fill: var(--syn-text-mute);
  letter-spacing: 0.02em;
}
.syn-ring-legend circle { fill: var(--syn-idle); }
.syn-ring-legend.is-ok circle   { fill: var(--syn-ok); }
.syn-ring-legend.is-warn circle { fill: var(--syn-warn); }
.syn-ring-legend.is-bad circle  { fill: var(--syn-bad); }

/* =========================================================================
   Identity card (Directory /a/<id>)
   ========================================================================= */
.syn-id-hero {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  margin-bottom: 18px;
}
.syn-identicon {
  border-radius: var(--syn-radius-sm);
  box-shadow: inset 0 0 0 1px var(--syn-line-strong);
  background: var(--syn-ink-900);
}
.syn-identicon-cell {
  opacity: 0;
  transform-origin: center;
  transform-box: fill-box;
  transform: scale(0.6);
  animation: syn-identicon-cell-fade 480ms cubic-bezier(0.2, 0.8, 0.3, 1) forwards;
  animation-delay: var(--syn-cell-delay, 0ms);
}
@keyframes syn-identicon-cell-fade {
  0% { opacity: 0; transform: scale(0.4); }
  60% { opacity: 1; }
  100% { opacity: 1; transform: scale(1); }
}
@media (prefers-reduced-motion: reduce) {
  .syn-identicon-cell {
    opacity: 1;
    transform: none;
    animation: none;
  }
}
.syn-id-meta { min-width: 0; }
.syn-id-handle {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.86rem;
  color: var(--syn-text-dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 10px;
  overflow-wrap: anywhere;
}
.syn-id-name {
  font-family: 'Instrument Serif', serif;
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  margin: 0;
  font-weight: 400;
}
.syn-id-description {
  color: var(--syn-text-mute);
  line-height: 1.65;
  margin-top: 10px;
  max-width: 48ch;
}
.syn-id-qr-wrap {
  display: grid;
  gap: 8px;
  justify-items: center;
}
.syn-qr {
  border-radius: var(--syn-radius-sm);
  border: 1px solid var(--syn-line);
  background: var(--syn-ink-900);
  padding: 6px;
}
.syn-id-qr-caption {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.7rem;
  color: var(--syn-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

/* Fingerprint chip — square, mono, no pill. */
.syn-fp-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px;
  border-radius: var(--syn-radius-sm);
  border: 1px solid var(--syn-line-strong);
  background: transparent;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--syn-text);
}
.syn-fp-chip.is-verified {
  border-color: var(--syn-acid);
  background: var(--syn-acid-faint);
  color: var(--syn-acid-hot);
}
.syn-fp-chip.is-verified .syn-fp-check { color: var(--syn-acid); }
.syn-fp-check-ring {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: syn-fp-ring-draw 700ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: 80ms;
  opacity: 0;
}
.syn-fp-check-tick {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: syn-fp-tick-draw 380ms cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: 540ms;
}
@keyframes syn-fp-ring-draw {
  0% { stroke-dashoffset: 100; opacity: 0; }
  10% { opacity: 1; }
  100% { stroke-dashoffset: 0; opacity: 1; }
}
@keyframes syn-fp-tick-draw {
  to { stroke-dashoffset: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .syn-fp-check-ring,
  .syn-fp-check-tick {
    stroke-dashoffset: 0;
    opacity: 1;
    animation: none;
  }
}
.syn-fp-chip.is-unverified {
  color: var(--syn-warn);
  border-color: rgba(224, 160, 92, 0.4);
  background: rgba(224, 160, 92, 0.06);
}
.syn-fp-chip.is-unverified .syn-fp-warn { color: var(--syn-warn); }

/* Signature strip */
.syn-sig-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}
.syn-sig-group {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.8rem;
  padding: 3px 8px;
  border-radius: 4px;
  background: transparent;
  border: 1px solid var(--syn-line);
  color: var(--syn-text-mute);
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
}

/* =========================================================================
   Surface tint (per-surface accent — extremely subtle)
   ========================================================================= */
[data-surface='archive']   .eyebrow { color: var(--syn-accent-archive); }
[data-surface='directory'] .eyebrow { color: var(--syn-accent-directory); }
[data-surface='console']   .eyebrow { color: var(--syn-accent-console); }

/* =========================================================================
   Responsive
   ========================================================================= */
@media (max-width: 1024px) {
  .syn-topbar-inner {
    grid-template-columns: auto 1fr auto;
    gap: 12px;
  }
  .syn-switch { display: none; }
  .syn-nav {
    justify-self: start;
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    max-width: 100%;
  }
  .syn-nav::-webkit-scrollbar { display: none; }
  .syn-nav a {
    white-space: nowrap;
    padding: 10px 10px;
    letter-spacing: 0.1em;
  }
}
@media (max-width: 900px) {
  .split-grid { grid-template-columns: 1fr; }
  .syn-id-hero { grid-template-columns: auto 1fr; }
  .syn-id-qr-wrap { grid-column: 1 / -1; justify-self: start; }
}
@media (max-width: 640px) {
  .syn-topbar-inner { grid-template-columns: auto 1fr; }
  .syn-nav { display: none; }
  .hero-actions, .action-links { flex-direction: column; align-items: stretch; }
  .syn-id-hero { grid-template-columns: 1fr; }
}

/* =========================================================================
   Motion & accessibility
   ========================================================================= */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .mesh-node.is-pulsing .mesh-node-halo { animation: none !important; opacity: 0.3; }
  .syn-topology-row.is-ok .syn-topology-dot-halo { animation: none !important; }
  a.card:hover, .card.is-interactive:hover { transform: none !important; }
}

/* =========================================================================
   Natural search surface (/query, /commons, /workspaces)
   ========================================================================= */
.syn-search { margin: 0; }
.syn-search-field {
  display: flex;
  align-items: stretch;
  gap: 0;
  border: 1px solid var(--syn-line-strong);
  border-radius: var(--syn-radius-sm);
  background: var(--syn-ink-900);
  transition: border-color var(--syn-dur-fast) var(--syn-ease),
              box-shadow var(--syn-dur-fast) var(--syn-ease);
}
.syn-search-field:focus-within {
  border-color: var(--syn-acid);
  box-shadow: 0 0 0 1px var(--syn-acid);
}
.syn-search-field svg {
  flex-shrink: 0;
  margin-left: 16px;
  margin-right: 4px;
  align-self: center;
  color: var(--syn-text-dim);
}
.syn-search-field input[type="search"],
.syn-search-field input[type="text"] {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  border-radius: 0;
  padding: 14px 10px;
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  color: var(--syn-text);
  box-shadow: none;
}
.syn-search-field input[type="search"]:focus,
.syn-search-field input[type="text"]:focus {
  outline: none;
  background: transparent;
  border: 0;
  box-shadow: none;
}
.syn-search-prefix {
  align-self: center;
  padding: 0 0 0 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  color: var(--syn-text-dim);
  user-select: none;
}
.syn-search-field [data-action] + [data-action] {
  margin-left: 0;
  border-left: 1px solid var(--syn-line);
}
.syn-search-field .btn,
.syn-search-field button[type="submit"] {
  flex-shrink: 0;
  margin: 4px 4px 4px 0;
  border-radius: calc(var(--syn-radius-sm) - 2px);
  min-height: auto;
  padding: 9px 20px;
}

.syn-tier-row {
  display: inline-flex;
  margin: 18px 0 0;
  border: 1px solid var(--syn-line);
  border-radius: var(--syn-radius-sm);
  overflow: hidden;
  font-family: 'JetBrains Mono', monospace;
}
.syn-tier-option {
  padding: 9px 18px;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--syn-text-dim);
  cursor: pointer;
  border-right: 1px solid var(--syn-line);
  transition: background var(--syn-dur-fast) var(--syn-ease),
              color var(--syn-dur-fast) var(--syn-ease);
}
.syn-tier-option:last-child { border-right: 0; }
.syn-tier-option input { display: none; }
.syn-tier-option:hover { color: var(--syn-text); }
.syn-tier-option.is-selected {
  background: var(--syn-acid-faint);
  color: var(--syn-acid-hot);
}

.syn-search-status {
  margin: 20px 0 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

/* ============================================================================
   Key-value list — label over mono value, hairline separated.
   Used on profile cards for URLs, fingerprints, endpoints.
   ============================================================================ */
.syn-kv-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.syn-kv-list > li {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-top: 1px solid var(--syn-line);
  min-width: 0;
}
.syn-kv-list > li:first-child { border-top: 0; padding-top: 4px; }
.syn-kv-label {
  display: block;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--syn-text-dim);
  font-weight: 500;
}
.syn-kv-value {
  display: block;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.85rem;
  color: var(--syn-text);
  background: transparent;
  padding: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
  line-height: 1.5;
}
.syn-kv-value.syn-kv-muted,
.syn-kv-muted {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.88rem;
  color: var(--syn-text-dim);
  font-style: italic;
}
.syn-kv-hint {
  display: block;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.8rem;
  color: var(--syn-text-dim);
  line-height: 1.5;
  margin-top: 4px;
  max-width: 60ch;
}
.syn-search-results {
  display: grid;
  gap: 0;
  margin-top: 4px;
}
.syn-result {
  border-top: 1px solid var(--syn-line);
  padding: 22px 0;
}
.syn-result:last-child { border-bottom: 1px solid var(--syn-line); }
.syn-result-head {
  display: flex;
  justify-content: space-between;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--syn-text-dim);
  margin-bottom: 12px;
}
.syn-result-type { color: var(--syn-acid); }
.syn-result-body {
  font-family: 'Instrument Serif', serif;
  font-size: 1.25rem;
  line-height: 1.35;
  color: var(--syn-text);
  margin: 0 0 12px;
  max-width: 64ch;
  font-weight: 400;
}
.syn-result-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.syn-empty {
  padding: 28px 0;
  color: var(--syn-text-faint);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  text-align: left;
  letter-spacing: 0.04em;
}

.syn-timeline {
  list-style: none;
  padding: 0;
  margin: 4px 0 0;
  display: grid;
  gap: 0;
}
.syn-timeline-item {
  border-top: 1px solid var(--syn-line);
  padding: 20px 0;
}
.syn-timeline-item:last-child { border-bottom: 1px solid var(--syn-line); }
.syn-timeline-item header {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--syn-text-dim);
  margin-bottom: 10px;
}
.syn-timeline-kind { color: var(--syn-acid); }
.syn-timeline-item p {
  font-family: 'Instrument Serif', serif;
  font-size: 1.15rem;
  line-height: 1.4;
  color: var(--syn-text);
  margin: 0 0 8px;
  max-width: 60ch;
}
.syn-timeline-foot {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.74rem;
  color: var(--syn-text-dim);
  letter-spacing: 0.06em;
}

/* Advanced-disclosure (engineers only). Closed by default, monospace cap. */
.syn-advanced {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--syn-line);
}
.syn-advanced[open] { padding-bottom: 8px; }
.syn-advanced summary {
  cursor: pointer;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--syn-text-dim);
  list-style: none;
  user-select: none;
  transition: color var(--syn-dur-fast) var(--syn-ease);
}
.syn-advanced summary::-webkit-details-marker { display: none; }
.syn-advanced summary::before {
  content: '+ ';
  color: var(--syn-acid);
  margin-right: 6px;
}
.syn-advanced[open] summary::before { content: '\u2212 '; }
.syn-advanced summary:hover { color: var(--syn-text); }

.syn-dot-acid {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--syn-acid);
  box-shadow: 0 0 0 2px rgba(199, 255, 61, 0.16);
  display: inline-block;
}

/* =========================================================================
   Orbit / signal hero (replaces the generic mesh visualization)
   ========================================================================= */
.syn-orbit {
  display: block;
  width: 100%;
  height: auto;
  color: var(--syn-text);
}
.syn-orbit-core-ring { stroke-opacity: 0.55; }
.syn-orbit-core-dot  { fill: var(--syn-acid); }
.syn-orbit-marker circle { fill-opacity: 0.85; }
.syn-orbit-pulse {
  fill: var(--syn-acid);
  filter: drop-shadow(0 0 6px rgba(199, 255, 61, 0.65));
  opacity: 0;
}
.syn-orbit-pulse.is-animated {
  animation: syn-orbit-pulse 4.8s var(--syn-ease-out) infinite;
}
@keyframes syn-orbit-pulse {
  0%   { opacity: 0;   transform: scale(0.6); transform-origin: center; transform-box: fill-box; }
  20%  { opacity: 1;   transform: scale(1.0); }
  60%  { opacity: 0.3; transform: scale(1.6); }
  100% { opacity: 0;   transform: scale(2.0); }
}

/* =========================================================================
   Waveform identity fingerprint (replaces the identicon)
   ========================================================================= */
.syn-waveform-block {
  display: grid;
  gap: 8px;
  padding: 18px 20px;
  border: 1px solid var(--syn-line);
  border-radius: var(--syn-radius-sm);
  background: var(--syn-ink-900);
}
.syn-waveform {
  display: block;
  color: var(--syn-acid);
  width: 100%;
  height: 96px;
}
.syn-waveform-caption {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}
.syn-waveform-label { color: var(--syn-text-dim); }
.syn-waveform-sublabel { color: var(--syn-text-faint); }

/* =========================================================================
   Editorial section + layout helpers
   ========================================================================= */
.section {
  padding: clamp(32px, 5vw, 64px) 0;
  border-top: 1px solid var(--syn-line);
}
.section:first-of-type { border-top: 0; }
.section-head {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(0, 2fr);
  gap: clamp(16px, 3vw, 48px);
  margin-bottom: 32px;
  align-items: end;
}
.section-head-meta {
  display: grid;
  gap: 10px;
}
.section-head h2 {
  margin: 0;
}
.section-head-intro {
  color: var(--syn-text-mute);
  max-width: 52ch;
}
@media (max-width: 760px) {
  .section-head { grid-template-columns: 1fr; align-items: start; }
}

.numbered-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  grid-auto-rows: 1fr;
  gap: 0;
  align-items: stretch;
  counter-reset: syn-step;
}
.numbered-steps > .step {
  counter-increment: syn-step;
  padding: 28px 24px;
  border: 1px solid var(--syn-line);
  border-left: 0;
  position: relative;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: 100%;
}
.numbered-steps > .step:first-child { border-left: 1px solid var(--syn-line); }
.numbered-steps > .step::before {
  content: counter(syn-step, decimal-leading-zero);
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--syn-acid);
  margin-bottom: 18px;
}
.numbered-steps h3 {
  font-family: 'Instrument Serif', serif;
  font-weight: 400;
  font-size: 1.4rem;
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin: 0 0 8px;
}
@media (max-width: 640px) {
  .numbered-steps > .step { border-left: 1px solid var(--syn-line); border-top: 0; }
  .numbered-steps > .step:first-child { border-top: 1px solid var(--syn-line); }
}

/* Data strip — a row of editorial metrics divided by hairlines. */
.data-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  border-top: 1px solid var(--syn-line);
  border-bottom: 1px solid var(--syn-line);
}
.data-strip .metric {
  padding: 24px;
  border-top: 0;
  border-right: 1px solid var(--syn-line);
}
.data-strip .metric:last-child { border-right: 0; }
@media (max-width: 640px) {
  .data-strip .metric { border-right: 0; border-bottom: 1px solid var(--syn-line); }
  .data-strip .metric:last-child { border-bottom: 0; }
}

/* Utility */
.stack   { display: grid; gap: 12px; }
.hide-sm { }
@media (max-width: 640px) { .hide-sm { display: none !important; } }
.meta-row { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
p, li, strong, a, code, pre { overflow-wrap: anywhere; word-break: break-word; }