/* =========================================================================
   L3RA prototype — shared layout & components
   Built on colors_and_type.css. Black / white / zinc. Restrained enterprise.
   ========================================================================= */

/* =========================================================================
   Design tokens — all --l3-* custom properties
   (Inlined here; colors_and_type.css is not required as a separate file)
   ========================================================================= */
:root {
  /* Surface */
  --l3-paper:           #ffffff;
  --l3-paper-soft:      #f4f4f5;   /* zinc-100 */

  /* Ink scale */
  --l3-ink:             #18181b;   /* zinc-900 */
  --l3-ink-2:           #3f3f46;   /* zinc-700 */
  --l3-ink-3:           #71717a;   /* zinc-500 */
  --l3-ink-4:           #a1a1aa;   /* zinc-400 */
  --l3-ink-5:           #d4d4d8;   /* zinc-300 */

  /* Line/border */
  --l3-line:            #e4e4e7;   /* zinc-200 */
  --l3-line-strong:     #d4d4d8;   /* zinc-300 */

  /* Night (dark sections) */
  --l3-night:           #111111;
  --l3-night-2:         #1c1c1e;
  --l3-night-3:         #27272a;   /* zinc-800 */
  --l3-night-ink:       #f4f4f5;   /* zinc-100 */
  --l3-night-ink-2:     #a1a1aa;   /* zinc-400 */
  --l3-night-ink-3:     #71717a;   /* zinc-500 */
  --l3-night-line:      #3f3f46;   /* zinc-700 */

  /* Action (CTA) */
  --l3-action:          #18181b;
  --l3-action-fg:       #ffffff;
  --l3-action-hi:       #27272a;
  --l3-action-dark:     #ffffff;
  --l3-action-dark-fg:  #18181b;
  --l3-action-dark-hi:  #f4f4f5;

  /* Typography */
  --l3-font-sans:   Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --l3-font-mono:   "JetBrains Mono", Menlo, Consolas, "Courier New", monospace;
  --l3-tr-mono:     0.04em;

  /* Motion */
  --l3-dur-2:       0.15s;
  --l3-ease:        cubic-bezier(0.4, 0, 0.2, 1);

  /* Focus */
  --l3-focus-ring:  0 0 0 2px #ffffff, 0 0 0 4px #18181b;

  /* Status */
  --l3-status-ok:   #22c55e;
  --l3-status-warn: #f59e0b;

  /* Named zinc aliases */
  --l3-zinc-300:    #d4d4d8;
  --l3-zinc-700:    #3f3f46;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--l3-paper); color: var(--l3-ink);
  font-family: var(--l3-font-sans);
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
img { display: block; }

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 80px;
}

/* ---------- Topbar ---------- */
.topbar {
  border-bottom: 1px solid var(--l3-line);
  background: var(--l3-paper);
  position: sticky; top: 0; z-index: 20;
}
.topbar__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.topbar__nav { display: flex; gap: 36px; }
.topbar__nav a {
  font-size: 13.5px; font-weight: 500; color: var(--l3-ink-3);
  transition: color var(--l3-dur-2) var(--l3-ease);
}
.topbar__nav a:hover { color: var(--l3-ink); }
.topbar__nav a.is-active { color: var(--l3-ink); }
.topbar__cta {
  font-family: var(--l3-font-sans); font-size: 13px;
  color: var(--l3-ink-4);
  display: inline-flex; align-items: center; gap: 8px;
}
.topbar__cta::before {
  content: ""; display: inline-block; width: 5px; height: 5px;
  background: var(--l3-status-ok); border-radius: 999px;
}

/* ---------- Page header (per-page hero) ---------- */
.pagehead {
  padding: 96px 0 112px;
  border-bottom: 1px solid var(--l3-line);
}
.pagehead__eyebrow {
  font-family: var(--l3-font-sans);
  font-size: 13px; font-weight: 500;
  letter-spacing: -0.005em;
  color: var(--l3-ink-3);
  margin-bottom: 24px;
  display: inline-block;
}
.pagehead__layout {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 80px;
  align-items: start;
}
.pagehead__title {
  margin: 0;
  font-family: var(--l3-font-sans);
  font-weight: 600;
  font-size: 56px;
  line-height: 1.06;
  letter-spacing: -0.026em;
  color: var(--l3-ink);
  max-width: 18ch;
}
.pagehead__sub {
  margin: 0;
  font-size: 18px; line-height: 1.6; letter-spacing: -0.005em;
  color: var(--l3-ink-2);
  max-width: 46ch;
}

/* ---------- Section ---------- */
.sec {
  padding: 144px 0;
  border-top: 1px solid var(--l3-line);
}
.sec:first-of-type { border-top: 0; }
.sec--soft {
  background: var(--l3-paper-soft);
  border-top: 1px solid var(--l3-line);
}
.sec--dark {
  background: var(--l3-night);
  color: var(--l3-night-ink);
  border-top: 0;
}
.sec--dark .sec__title { color: var(--l3-night-ink); }
.sec--dark .sec__body { color: var(--l3-night-ink-2); }
.sec--dark .sec__eyebrow { color: var(--l3-night-ink-3); }
.sec--compact { padding: 96px 0; }

.sec__head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  align-items: start;
  margin-bottom: 64px;
  max-width: 760px;
}
.sec__eyebrow {
  font-family: var(--l3-font-sans);
  font-size: 13px; font-weight: 500;
  letter-spacing: -0.005em;
  color: var(--l3-ink-3);
  margin-bottom: 20px;
  display: inline-block;
}
.sec__title {
  margin: 0;
  font-family: var(--l3-font-sans);
  font-weight: 600;
  font-size: 40px;
  line-height: 1.12;
  letter-spacing: -0.022em;
  color: var(--l3-ink);
  max-width: 26ch;
}
.sec__body {
  margin: 28px 0 0;
  font-size: 17px; line-height: 1.65; letter-spacing: -0.005em;
  color: var(--l3-ink-2);
  max-width: 60ch;
}

/* ---------- Buttons ---------- */
.btn {
  font-family: var(--l3-font-sans); font-weight: 500;
  font-size: 14.5px; line-height: 1; padding: 14px 20px;
  border-radius: 6px; border: 1px solid transparent;
  display: inline-flex; align-items: center; gap: 10px;
  cursor: pointer;
  transition: background var(--l3-dur-2) var(--l3-ease),
              border-color var(--l3-dur-2) var(--l3-ease),
              color var(--l3-dur-2) var(--l3-ease);
}
.btn--primary {
  background: var(--l3-action); color: var(--l3-action-fg);
}
.btn--primary:hover  { background: var(--l3-action-hi); }
.btn--secondary {
  background: var(--l3-paper); color: var(--l3-ink);
  border-color: var(--l3-line-strong);
}
.btn--secondary:hover { border-color: var(--l3-ink); }
.btn--ondark.btn--primary {
  background: var(--l3-action-dark); color: var(--l3-action-dark-fg);
}
.btn--ondark.btn--primary:hover { background: var(--l3-action-dark-hi); }
.btn--ondark.btn--secondary {
  background: transparent; color: var(--l3-night-ink);
  border-color: var(--l3-night-line);
}
.btn--ondark.btn--secondary:hover { border-color: var(--l3-night-ink); }
.btn .arrow { transition: transform var(--l3-dur-2) var(--l3-ease); }
.btn:hover .arrow { transform: translateX(2px); }

/* ---------- Inline arrow link ---------- */
.arrowlink {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 14.5px; font-weight: 500;
  color: var(--l3-ink);
  border-bottom: 1px solid var(--l3-ink);
  padding-bottom: 4px;
  width: max-content;
  transition: gap var(--l3-dur-2) var(--l3-ease);
}
.arrowlink:hover { gap: 14px; }
.arrowlink--ondark {
  color: var(--l3-night-ink);
  border-bottom-color: var(--l3-night-ink);
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--l3-line);
  padding: 80px 0 64px;
  background: var(--l3-paper);
}
.footer__top {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 96px;
  align-items: start;
  margin-bottom: 80px;
}
.footer__title {
  margin: 0;
  font-family: var(--l3-font-sans);
  font-weight: 600;
  font-size: 36px;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--l3-ink);
  max-width: 16ch;
}
.footer__actions {
  display: flex; gap: 12px; align-items: center; flex-wrap: wrap;
  padding-top: 8px;
}
.footer__cols {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
  border-top: 1px solid var(--l3-line);
  padding-top: 48px;
}
.footer__col__label {
  font-family: var(--l3-font-sans);
  font-size: 13px; font-weight: 600;
  color: var(--l3-ink);
  margin-bottom: 18px;
}
.footer__col ul {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 10px;
}
.footer__col a {
  font-size: 14px; color: var(--l3-ink-2);
  transition: color var(--l3-dur-2) var(--l3-ease);
}
.footer__col a:hover { color: var(--l3-ink); }
.footer__base {
  display: flex; justify-content: space-between; align-items: center;
  border-top: 1px solid var(--l3-line);
  margin-top: 48px;
  padding-top: 32px;
  font-family: var(--l3-font-sans);
  font-size: 12.5px; color: var(--l3-ink-3);
}

/* =========================================================================
   Re-usable display elements
   ========================================================================= */

/* ---------- Numbered card grid ---------- */
.cardgrid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}
.cardgrid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.cardgrid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.card {
  background: var(--l3-paper);
  border: 1px solid var(--l3-line);
  border-radius: 8px;
  padding: 32px;
  display: grid; gap: 16px;
  align-content: start;
}
.card__num {
  font-family: var(--l3-font-sans);
  font-size: 12.5px; font-weight: 500;
  letter-spacing: -0.002em;
  color: var(--l3-ink-3);
}
.card__title {
  margin: 0;
  font-family: var(--l3-font-sans);
  font-size: 21px; font-weight: 600; letter-spacing: -0.013em;
  line-height: 1.22;
  color: var(--l3-ink);
}
.card__body {
  margin: 0;
  font-size: 15px; line-height: 1.6;
  color: var(--l3-ink-2);
  max-width: 40ch;
}
.card--dark {
  background: var(--l3-night-2);
  border-color: var(--l3-night-line);
}
.card--dark .card__num { color: var(--l3-night-ink-3); }
.card--dark .card__title { color: var(--l3-night-ink); }
.card--dark .card__body { color: var(--l3-night-ink-2); }

/* ---------- Horizontal steps ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(var(--cols, 4), minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--l3-line);
}
.step {
  padding: 32px 28px 36px 0;
  border-right: 1px solid var(--l3-line);
  display: grid; gap: 14px;
  align-content: start;
}
.step:last-child { border-right: 0; padding-right: 0; }
.step + .step { padding-left: 28px; }
.step__num {
  font-family: var(--l3-font-sans);
  font-size: 12.5px; font-weight: 500;
  color: var(--l3-ink-3);
}
.step__title {
  margin: 0;
  font-family: var(--l3-font-sans);
  font-size: 18px; font-weight: 600; letter-spacing: -0.012em;
  line-height: 1.28;
  color: var(--l3-ink);
  max-width: 18ch;
}
.step__body {
  margin: 0;
  font-size: 14px; line-height: 1.55;
  color: var(--l3-ink-2);
  max-width: 32ch;
}
.sec--dark .step { border-right-color: var(--l3-night-line); }
.sec--dark .steps { border-top-color: var(--l3-night-line); }
.sec--dark .step__num { color: var(--l3-night-ink-3); }
.sec--dark .step__title { color: var(--l3-night-ink); }
.sec--dark .step__body { color: var(--l3-night-ink-2); }

/* ---------- Vertical step list (numbered rows) ---------- */
.steplist {
  display: grid;
  border-top: 1px solid var(--l3-line);
}
.steplist__row {
  display: grid;
  grid-template-columns: 80px minmax(0, 4fr) minmax(0, 7fr);
  gap: 32px;
  padding: 32px 0;
  border-bottom: 1px solid var(--l3-line);
  align-items: start;
}
.steplist__num {
  font-family: var(--l3-font-sans);
  font-size: 13px; font-weight: 500;
  color: var(--l3-ink-3);
  padding-top: 6px;
}
.steplist__title {
  margin: 0;
  font-family: var(--l3-font-sans);
  font-size: 21px; font-weight: 600; letter-spacing: -0.013em;
  line-height: 1.24;
  color: var(--l3-ink);
  max-width: 22ch;
}
.steplist__body {
  margin: 0;
  font-size: 15.5px; line-height: 1.6;
  color: var(--l3-ink-2);
  max-width: 56ch;
}
.sec--dark .steplist { border-top-color: var(--l3-night-line); }
.sec--dark .steplist__row { border-bottom-color: var(--l3-night-line); }
.sec--dark .steplist__num { color: var(--l3-night-ink-3); }
.sec--dark .steplist__title { color: var(--l3-night-ink); }
.sec--dark .steplist__body { color: var(--l3-night-ink-2); }

/* ---------- Canonical flow ribbon (Form → Record → Workflow …) ---------- */
.flow {
  display: grid;
  grid-template-columns: repeat(var(--cols, 6), minmax(0, 1fr));
  border: 1px solid var(--l3-line);
  border-radius: 8px;
  background: var(--l3-paper);
  overflow: hidden;
}
.flow__node {
  padding: 24px 22px;
  border-right: 1px solid var(--l3-line);
  display: grid; gap: 10px;
  align-content: start;
  position: relative;
  background: var(--l3-paper);
}
.flow__node:last-child { border-right: 0; }
.flow__node:nth-child(even) { background: var(--l3-paper-soft); }
.flow__node__index {
  font-family: var(--l3-font-sans);
  font-size: 12px; font-weight: 500;
  color: var(--l3-ink-3);
}
.flow__node__name {
  font-family: var(--l3-font-sans);
  font-size: 16px; font-weight: 600; letter-spacing: -0.01em;
  color: var(--l3-ink);
}
.flow__node__meta {
  font-family: var(--l3-font-sans);
  font-size: 12.5px; color: var(--l3-ink-3);
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--l3-line);
  line-height: 1.45;
}
.flow__node--optional {
  background: transparent !important;
  border-left: 1px dashed var(--l3-line-strong);
}
.flow__node--optional .flow__node__name { color: var(--l3-ink-3); }
.sec--dark .flow {
  background: var(--l3-night-2);
  border-color: var(--l3-night-line);
}
.sec--dark .flow__node { background: var(--l3-night-2); border-right-color: var(--l3-night-line); }
.sec--dark .flow__node:nth-child(even) { background: var(--l3-night-3); }
.sec--dark .flow__node__name { color: var(--l3-night-ink); }
.sec--dark .flow__node__index { color: var(--l3-night-ink-3); }
.sec--dark .flow__node__meta {
  color: var(--l3-night-ink-3);
  border-top-color: var(--l3-night-line);
}

/* ---------- Layered architecture diagram ---------- */
.layers {
  display: grid;
  gap: 12px;
}
.layer {
  display: grid;
  grid-template-columns: 80px minmax(0, 4fr) minmax(0, 6fr);
  gap: 24px;
  padding: 28px;
  background: var(--l3-paper);
  border: 1px solid var(--l3-line);
  border-radius: 8px;
  align-items: start;
}
.layer__index {
  font-family: var(--l3-font-sans);
  font-size: 13px; font-weight: 500;
  color: var(--l3-ink-3);
  padding-top: 4px;
}
.layer__name {
  margin: 0;
  font-family: var(--l3-font-sans);
  font-size: 20px; font-weight: 600; letter-spacing: -0.012em;
  color: var(--l3-ink);
}
.layer__body {
  margin: 10px 0 0;
  font-size: 14.5px; line-height: 1.55; color: var(--l3-ink-2);
  max-width: 36ch;
}
.layer__examples {
  display: flex; flex-wrap: wrap; gap: 8px;
  align-self: start;
}
.layer__chip {
  font-family: var(--l3-font-sans);
  font-size: 12.5px; font-weight: 500;
  color: var(--l3-ink-2);
  border: 1px solid var(--l3-line);
  background: var(--l3-paper-soft);
  padding: 6px 12px;
  border-radius: 999px;
}

/* ---------- Definition list / spec rows ---------- */
.deflist {
  display: grid;
  border-top: 1px solid var(--l3-line);
}
.deflist__row {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  gap: 48px;
  padding: 28px 0;
  border-bottom: 1px solid var(--l3-line);
  align-items: start;
}
.deflist__k {
  font-family: var(--l3-font-sans);
  font-size: 14px; font-weight: 600;
  color: var(--l3-ink);
  padding-top: 4px;
}
.deflist__v {
  margin: 0;
  font-size: 16.5px; line-height: 1.55; letter-spacing: -0.005em;
  color: var(--l3-ink);
  max-width: 56ch;
}
.deflist__v strong { font-weight: 600; }
.sec--dark .deflist { border-top-color: var(--l3-night-line); }
.sec--dark .deflist__row { border-bottom-color: var(--l3-night-line); }
.sec--dark .deflist__k { color: var(--l3-night-ink-3); }
.sec--dark .deflist__v { color: var(--l3-night-ink); }

/* ---------- "Not what L3RA is" contrast block ---------- */
.contrast {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--l3-line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--l3-paper);
}
.contrast__cell {
  padding: 32px;
  border-right: 1px solid var(--l3-line);
  display: grid; gap: 12px; align-content: start;
}
.contrast__cell:last-child { border-right: 0; }
.contrast__cell__k {
  font-family: var(--l3-font-sans);
  font-size: 12.5px; font-weight: 500;
  color: var(--l3-ink-3);
}
.contrast__cell__not {
  font-family: var(--l3-font-sans);
  font-size: 16px; color: var(--l3-ink-3);
  text-decoration: line-through;
  text-decoration-color: var(--l3-zinc-300);
}
.contrast__cell__is {
  font-family: var(--l3-font-sans);
  font-size: 18px; font-weight: 600; letter-spacing: -0.012em;
  color: var(--l3-ink);
  line-height: 1.35;
}

/* ---------- Form ---------- */
.form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 24px;
}
.form__field {
  display: grid; gap: 8px;
}
.form__field--full { grid-column: 1 / -1; }
.form__label {
  font-family: var(--l3-font-sans);
  font-size: 13px; font-weight: 500;
  color: var(--l3-ink-2);
}
.form__input,
.form__select,
.form__textarea {
  font-family: var(--l3-font-sans);
  font-size: 15px; color: var(--l3-ink);
  background: var(--l3-paper);
  border: 1px solid var(--l3-line-strong);
  border-radius: 6px;
  padding: 12px 14px;
  height: 44px;
  outline: none;
  width: 100%;
  transition: border-color var(--l3-dur-2) var(--l3-ease), box-shadow var(--l3-dur-2) var(--l3-ease);
}
.form__textarea { height: auto; min-height: 140px; resize: vertical; }
.form__input::placeholder,
.form__textarea::placeholder { color: var(--l3-ink-5); }
.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  border-color: var(--l3-ink); box-shadow: var(--l3-focus-ring);
}
.form__hint {
  font-family: var(--l3-font-sans);
  font-size: 12.5px; color: var(--l3-ink-3);
}
.form__actions {
  grid-column: 1 / -1;
  display: flex; justify-content: space-between; align-items: center;
  border-top: 1px solid var(--l3-line);
  margin-top: 12px;
  padding-top: 24px;
  gap: 16px; flex-wrap: wrap;
}

/* ---------- Case card (anonymized) ---------- */
.case {
  background: var(--l3-paper);
  border: 1px solid var(--l3-line);
  border-radius: 8px;
  padding: 32px;
  display: grid; gap: 14px;
  align-content: start;
}
.case__tag {
  font-family: var(--l3-font-sans);
  font-size: 12.5px; font-weight: 500;
  color: var(--l3-ink-3);
}
.case__title {
  margin: 0;
  font-family: var(--l3-font-sans);
  font-size: 18px; font-weight: 600; letter-spacing: -0.01em;
  color: var(--l3-ink);
  line-height: 1.28;
}
.case__role {
  font-family: var(--l3-font-sans);
  font-size: 14px; color: var(--l3-ink-2);
  line-height: 1.55;
}
.case__outcome {
  font-family: var(--l3-font-sans);
  font-size: 14px; line-height: 1.55;
  color: var(--l3-ink-3);
  padding-top: 14px;
  border-top: 1px solid var(--l3-line);
  margin-top: 4px;
}

/* ---------- Tag pill ---------- */
.taglist { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-family: var(--l3-font-sans);
  font-size: 12.5px; font-weight: 500;
  color: var(--l3-ink-2);
  border: 1px solid var(--l3-line);
  background: var(--l3-paper);
  padding: 5px 12px;
  border-radius: 999px;
}
.sec--dark .tag {
  color: var(--l3-night-ink-2);
  background: var(--l3-night-3);
  border-color: var(--l3-night-line);
}

/* ---------- Inline meta strip ---------- */
.meta-strip {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  font-family: var(--l3-font-sans);
  font-size: 13px; color: var(--l3-ink-3);
}
.meta-strip .sep {
  width: 1px; height: 12px; background: var(--l3-line-strong);
}

/* ---------- Synthetic placeholder (wireframe-only) ---------- */
.synth {
  background: var(--l3-paper-soft);
  border: 1px solid var(--l3-line);
  border-radius: 8px;
  padding: 28px;
}
.synth__head {
  display: flex; justify-content: space-between; align-items: center;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--l3-line);
  margin-bottom: 20px;
  font-family: var(--l3-font-sans);
  font-size: 12.5px; color: var(--l3-ink-3);
}
.synth__rows {
  display: grid; gap: 10px;
}
.synth__row {
  display: grid;
  grid-template-columns: 90px 1fr 100px 80px;
  gap: 16px;
  background: var(--l3-paper);
  border: 1px solid var(--l3-line);
  border-radius: 6px;
  padding: 14px 16px;
  align-items: center;
  font-family: var(--l3-font-sans);
  font-size: 13.5px;
  color: var(--l3-ink-2);
}
.synth__row__id {
  font-family: var(--l3-font-mono);
  font-size: 12px; color: var(--l3-ink-4);
  letter-spacing: var(--l3-tr-mono);
}
.synth__row__label { color: var(--l3-ink); font-weight: 500; }
.synth__row__status {
  font-family: var(--l3-font-sans);
  font-size: 12.5px; font-weight: 500;
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--l3-ink-3);
}
.synth__row__status::before {
  content: ""; width: 6px; height: 6px; border-radius: 999px;
  background: var(--l3-ink-3);
}
.synth__row__status--ok { color: var(--l3-status-ok); }
.synth__row__status--ok::before { background: var(--l3-status-ok); }
.synth__row__status--warn { color: var(--l3-status-warn); }
.synth__row__status--warn::before { background: var(--l3-status-warn); }
.synth__row__status--info { color: var(--l3-zinc-700); }
.synth__row__status--info::before { background: var(--l3-zinc-700); }
.synth__row__role {
  font-family: var(--l3-font-sans);
  font-size: 12.5px; color: var(--l3-ink-3);
}
.synth__foot {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--l3-line);
  display: flex; justify-content: space-between;
  font-family: var(--l3-font-sans);
  font-size: 12.5px; color: var(--l3-ink-3);
}

/* ---------- Section close CTA strip ---------- */
.endstrip {
  display: flex; justify-content: space-between; align-items: center;
  gap: 32px;
  padding: 36px 40px;
  border: 1px solid var(--l3-line);
  border-radius: 8px;
  background: var(--l3-paper);
}
.endstrip__title {
  margin: 0;
  font-family: var(--l3-font-sans);
  font-size: 20px; font-weight: 600; letter-spacing: -0.012em;
  color: var(--l3-ink);
  max-width: 32ch;
}

/* =========================================================================
   Hero / pagehead upgrade — two-column layout with graphic placeholder
   ========================================================================= */

/* Upgrade pagehead to hero-scale vertical presence */
.pagehead {
  padding: 128px 0 148px;
}

/* Restructure layout: left = all content, right = graphic placeholder */
.pagehead__layout {
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: 64px;
  align-items: center;
}

/* Content column — groups title, sub, actions, meta */
.pagehead__content {
  display: grid;
  gap: 0;
  align-content: start;
}

.pagehead__sub {
  margin: 28px 0 0;
}

.pagehead__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 36px;
}

.pagehead__meta {
  margin-top: 28px;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  font-family: var(--l3-font-sans);
  font-size: 13px;
  color: var(--l3-ink-3);
}

.pagehead__meta .sep {
  width: 1px;
  height: 12px;
  background: var(--l3-line-strong);
}

/* Graphic column — reserved zone for future conceptual graphic */
.pagehead__graphic {
  display: flex;
  align-items: stretch;
  min-height: 400px;
}

/* The placeholder itself */
.pagehead__graphic-placeholder {
  width: 100%;
  min-height: 400px;
  border: 1px solid var(--l3-line);
  border-radius: 8px;
  background: var(--l3-paper-soft);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

/* Inner composition surfaces — quiet layered rectangles */
.gp-label {
  font-family: var(--l3-font-sans);
  font-size: 12px;
  font-weight: 500;
  color: var(--l3-ink-4);
  letter-spacing: -0.005em;
  position: absolute;
  bottom: 20px;
  left: 20px;
}

/* Shared inner placeholder surface */
.gp-surface {
  border: 1px solid var(--l3-line);
  border-radius: 6px;
  background: var(--l3-paper);
}

.gp-surface--soft {
  background: var(--l3-paper-soft);
}

/* Fragmented-to-controlled composition (Home) */
.gp-home {
  padding: 28px;
  gap: 20px;
  display: grid;
  grid-template-rows: 1fr auto 1fr;
  height: 100%;
}
.gp-home__cluster {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 8px;
}
.gp-home__cluster .gp-surface {
  min-height: 52px;
  opacity: 0.6;
}
.gp-home__cluster .gp-surface:nth-child(odd) {
  opacity: 0.45;
}
.gp-home__arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px 0;
  color: var(--l3-ink-4);
}
.gp-home__arrow svg {
  display: block;
}
.gp-home__layer {
  border: 1px solid var(--l3-line-strong);
  border-radius: 6px;
  background: var(--l3-paper);
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0;
  overflow: hidden;
}
.gp-home__layer-node {
  border-right: 1px solid var(--l3-line);
  padding: 14px 12px;
  min-height: 56px;
}
.gp-home__layer-node:last-child {
  border-right: 0;
}

/* Canonical flow skeleton (Product) */
.gp-flow {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: 100%;
}
.gp-flow__row {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 6px;
  flex: 1;
}
.gp-flow__node {
  border: 1px solid var(--l3-line);
  border-radius: 6px;
  background: var(--l3-paper);
  min-height: 64px;
  display: flex;
  flex-direction: column;
  padding: 10px 8px;
  gap: 6px;
}
.gp-flow__node:nth-child(even) {
  background: var(--l3-paper-soft);
}
.gp-flow__dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--l3-line-strong);
}
.gp-flow__bar {
  height: 4px;
  border-radius: 2px;
  background: var(--l3-line);
  width: 60%;
}
.gp-flow__bar--short { width: 40%; }
.gp-flow__connector {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0 4px;
}
.gp-flow__connector-line {
  flex: 1;
  height: 1px;
  background: var(--l3-line-strong);
}
.gp-flow__connector-arrow {
  color: var(--l3-ink-4);
  font-size: 10px;
}

/* Workflow path with gate markers (Control) */
.gp-control {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 0;
  height: 100%;
}
.gp-control__step {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--l3-line);
  align-items: start;
}
.gp-control__step:last-child { border-bottom: 0; }
.gp-control__line {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.gp-control__dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  border: 1px solid var(--l3-line-strong);
  background: var(--l3-paper);
  flex-shrink: 0;
  margin-top: 2px;
}
.gp-control__dot--active {
  background: var(--l3-ink-3);
  border-color: var(--l3-ink-3);
}
.gp-control__vline {
  width: 1px;
  flex: 1;
  min-height: 16px;
  background: var(--l3-line);
}
.gp-control__bar {
  height: 4px;
  border-radius: 2px;
  background: var(--l3-line);
  margin-top: 6px;
}
.gp-control__bar--short { width: 55%; }
.gp-control__bar--medium { width: 75%; }
.gp-control__bar--long { width: 90%; }
.gp-control__gate {
  display: inline-block;
  width: 36px;
  height: 16px;
  border: 1px solid var(--l3-line-strong);
  border-radius: 3px;
  background: var(--l3-paper-soft);
  margin-top: 8px;
}

/* Record block composition (Data & Access) */
.gp-data {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: 100%;
}
.gp-data__record {
  border: 1px solid var(--l3-line-strong);
  border-radius: 6px;
  background: var(--l3-paper);
  overflow: hidden;
  flex: 1;
}
.gp-data__record-head {
  padding: 12px 16px;
  border-bottom: 1px solid var(--l3-line);
  background: var(--l3-paper-soft);
  display: flex;
  gap: 8px;
  align-items: center;
}
.gp-data__record-dot {
  width: 6px; height: 6px;
  border-radius: 999px;
  background: var(--l3-line-strong);
}
.gp-data__record-bar {
  height: 4px; border-radius: 2px;
  background: var(--l3-line);
}
.gp-data__record-bar--wide { width: 80px; }
.gp-data__record-bar--short { width: 48px; }
.gp-data__fields {
  padding: 12px 16px;
  display: grid;
  gap: 8px;
}
.gp-data__field {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 12px;
  align-items: center;
}
.gp-data__field-k {
  height: 4px; border-radius: 2px;
  background: var(--l3-line);
}
.gp-data__field-v {
  height: 4px; border-radius: 2px;
  background: var(--l3-line-strong);
}
.gp-data__field-v--short { width: 60%; }
.gp-data__field-v--medium { width: 80%; }
.gp-data__views {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
}
.gp-data__view {
  border: 1px solid var(--l3-line);
  border-radius: 6px;
  background: var(--l3-paper);
  padding: 10px;
  display: grid;
  gap: 6px;
}
.gp-data__view-bar {
  height: 4px; border-radius: 2px;
  background: var(--l3-line);
}
.gp-data__view-bar--wide { width: 100%; }
.gp-data__view-bar--short { width: 60%; }

/* Scenario mini-flow (Use Cases) */
.gp-usecases {
  padding: 24px;
  display: grid;
  gap: 16px;
  height: 100%;
  align-content: start;
}
.gp-scenario {
  border: 1px solid var(--l3-line);
  border-radius: 6px;
  background: var(--l3-paper);
  padding: 14px 16px;
  display: grid;
  gap: 10px;
}
.gp-scenario__nodes {
  display: flex;
  align-items: center;
  gap: 4px;
}
.gp-scenario__node {
  width: 28px; height: 28px;
  border: 1px solid var(--l3-line);
  border-radius: 4px;
  background: var(--l3-paper-soft);
  flex-shrink: 0;
}
.gp-scenario__edge {
  flex: 1;
  height: 1px;
  background: var(--l3-line);
  min-width: 8px;
}
.gp-scenario__bars {
  display: grid;
  gap: 6px;
}
.gp-scenario__bar {
  height: 4px; border-radius: 2px;
  background: var(--l3-line);
}
.gp-scenario__bar--wide { width: 85%; }
.gp-scenario__bar--short { width: 55%; }

/* Demo: text-only journey (Demo) */
.gp-demo {
  padding: 28px;
  display: grid;
  gap: 0;
  height: 100%;
  align-content: start;
}
.gp-demo__row {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--l3-line);
  align-items: start;
}
.gp-demo__row:last-child { border-bottom: 0; }
.gp-demo__num {
  width: 20px; height: 20px;
  border: 1px solid var(--l3-line-strong);
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--l3-font-sans);
  font-size: 11px;
  font-weight: 500;
  color: var(--l3-ink-3);
  flex-shrink: 0;
}
.gp-demo__bars {
  display: grid;
  gap: 6px;
  padding-top: 2px;
}
.gp-demo__bar {
  height: 4px; border-radius: 2px;
  background: var(--l3-line);
}
.gp-demo__bar--wide { width: 80%; }
.gp-demo__bar--short { width: 50%; }

/* ---------- Responsive hero ---------- */
@media (max-width: 1024px) {
  .pagehead__layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .pagehead__graphic {
    min-height: 320px;
  }
  .pagehead__graphic-placeholder {
    min-height: 320px;
  }
}

@media (max-width: 640px) {
  .pagehead {
    padding: 72px 0 88px;
  }
  .pagehead__title {
    font-size: 40px;
  }
  .pagehead__graphic {
    min-height: 260px;
  }
  .pagehead__graphic-placeholder {
    min-height: 260px;
  }
  .container {
    padding: 0 24px;
  }
}

/* ============================================================
   GP-DATA: record + three view surfaces
   ============================================================ */
.gp-data {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.gp-data__record {
  border: 1px solid var(--l3-line);
  border-radius: 6px;
  overflow: hidden;
  background: var(--l3-paper);
}
.gp-data__record-header {
  height: 10px;
  background: var(--l3-line);
  border-bottom: 1px solid var(--l3-line);
}
.gp-data__record-fields {
  padding: 16px 20px;
  display: grid;
  gap: 10px;
}
.gp-data__field {
  height: 7px;
  border-radius: 3px;
  background: var(--l3-line);
  opacity: 0.7;
}
.gp-data__field--wide  { width: 72%; }
.gp-data__field--mid   { width: 50%; }
.gp-data__field--narrow { width: 34%; }
.gp-data__views {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.gp-data__view {
  border: 1px solid var(--l3-line);
  border-radius: 6px;
  overflow: hidden;
  background: var(--l3-paper);
}
.gp-data__view-bar {
  height: 8px;
  background: var(--l3-line);
  border-bottom: 1px solid var(--l3-line);
}
.gp-data__view-rows {
  padding: 10px 12px;
  display: grid;
  gap: 7px;
}
.gp-data__view-row {
  height: 5px;
  border-radius: 2px;
  background: var(--l3-line);
}
.gp-data__view-row--dim { opacity: 0.4; }

/* ============================================================
   GP-USECASES: three scenario mini-flows
   ============================================================ */
.gp-usecases {
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.gp-uc__scenarios {
  display: grid;
  gap: 28px;
}
.gp-uc__scenario {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--l3-line);
}
.gp-uc__scenario:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.gp-uc__nodes {
  display: flex;
  align-items: center;
  gap: 10px;
}
.gp-uc__node {
  width: 36px;
  height: 26px;
  border: 1px solid var(--l3-line);
  border-radius: 4px;
  background: var(--l3-paper);
  flex-shrink: 0;
}
.gp-uc__node--active {
  background: var(--l3-ink);
  border-color: var(--l3-ink);
}
.gp-uc__arrow {
  font-size: 11px;
  color: var(--l3-ink-4);
  flex-shrink: 0;
}
.gp-uc__label-bar {
  height: 6px;
  border-radius: 3px;
  background: var(--l3-line);
  width: 60%;
}
.gp-uc__label-bar--short {
  width: 40%;
}

/* ============================================================
   DEMO: trust strip
   ============================================================ */
.demo-hero__content {
  display: flex;
  flex-direction: column;
}
.demo-hero__trust {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--l3-line);
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  font-family: var(--l3-font-sans);
  font-size: 13px;
  color: var(--l3-ink-3);
}
.demo-hero__trust .sep {
  width: 1px;
  height: 11px;
  background: var(--l3-line-strong);
  flex-shrink: 0;
}

/* Demo eyebrow spacing (was inline style) */
.demo-hero__content .pagehead__eyebrow {
  margin-bottom: 24px;
}


/* =========================================================================
   L3RA Conceptual Graphic System — v2 Premium
   Product-explanatory editorial visuals for hero/pagehead zones.
   White / Black / Zinc only. No fake UI. No skeleton bars. No dashboards.
   ========================================================================= */

/* ---- Base container: fills placeholder zone ---- */
.l3-graphic {
  flex: 1;
  width: 100%;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}
/* Grid containers need explicit row-span to fill */
.gp-home > .l3-graphic {
  grid-row: 1 / -1;
  align-self: stretch;
}

/* =========================================================================
   Shared premium graphic elements
   ========================================================================= */

/* Readable label: 12px bold, primary content label */
.l3-gfx__label {
  font-family: var(--l3-font-sans);
  font-size: 12px;
  font-weight: 600;
  color: var(--l3-ink);
  line-height: 1.25;
  white-space: nowrap;
  display: block;
}
/* Sub label: 10px medium, supporting context */
.l3-gfx__label--sub {
  font-size: 10px;
  font-weight: 500;
  color: var(--l3-ink-3);
}
/* Meta label: 9px uppercase, category/eyebrow */
.l3-gfx__label--meta {
  font-size: 9px;
  font-weight: 500;
  color: var(--l3-ink-4);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* Zone: bounded structural region */
.l3-gfx__zone {
  border: 1px solid var(--l3-line-strong);
  border-radius: 5px;
  background: var(--l3-paper);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}
.l3-gfx__zone--strong {
  border-width: 1.5px;
  border-color: var(--l3-ink-2);
}
.l3-gfx__zone--soft {
  background: var(--l3-paper-soft);
  border-color: var(--l3-line);
}
.l3-gfx__zone--gate {
  border-color: var(--l3-ink-3);
  background: var(--l3-paper-soft);
}

/* Zone head: top strip with label */
.l3-gfx__zone-head {
  padding: 7px 12px;
  border-bottom: 1px solid var(--l3-line);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.l3-gfx__zone-body {
  flex: 1;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 0;
}

/* Field row: key text + value line */
.l3-gfx__field {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 0;
  border-bottom: 1px solid var(--l3-line);
}
.l3-gfx__field:last-child { border-bottom: 0; }
.l3-gfx__field-key {
  font-family: var(--l3-font-sans);
  font-size: 10px;
  font-weight: 500;
  color: var(--l3-ink-4);
  flex-shrink: 0;
  width: 52px;
}
.l3-gfx__field-val {
  flex: 1;
  height: 1px;
  background: var(--l3-line-strong);
}
.l3-gfx__field-val--short { max-width: 36%; }
.l3-gfx__field-val--med   { max-width: 58%; }
.l3-gfx__field-val--long  { max-width: 82%; }

/* Flow step node */
.l3-gfx__node {
  border: 1px solid var(--l3-line-strong);
  border-radius: 4px;
  background: var(--l3-paper);
  padding: 8px 11px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex-shrink: 0;
}
.l3-gfx__node--gate {
  border-color: var(--l3-ink-3);
  background: var(--l3-paper-soft);
}
.l3-gfx__node--strong {
  border-color: var(--l3-ink-2);
  border-width: 1.5px;
}

/* Flow connector line */
.l3-gfx__path {
  height: 1px;
  background: var(--l3-line-strong);
  align-self: center;
  flex-shrink: 0;
}
.l3-gfx__path--v {
  width: 1px;
  height: auto;
  flex: 1;
  min-height: 8px;
  align-self: center;
}
.l3-gfx__path--flex { flex: 1; min-width: 6px; }

/* Marker dot */
.l3-gfx__dot {
  width: 6px; height: 6px;
  border-radius: 999px;
  background: var(--l3-ink-4);
  flex-shrink: 0;
}
.l3-gfx__dot--filled { background: var(--l3-ink-2); }
.l3-gfx__dot--open {
  background: var(--l3-paper);
  border: 1px solid var(--l3-line-strong);
}

/* Horizontal rule */
.l3-gfx__rule { width: 100%; height: 1px; background: var(--l3-line); flex-shrink: 0; }
.l3-gfx__rule--v { width: 1px; height: 100%; background: var(--l3-line); flex-shrink: 0; }
.l3-gfx__rule--strong { background: var(--l3-line-strong); }

/* =========================================================================
   HOME — "Fragments to layer" horizontal split composition
   ========================================================================= */
.l3-graphic--home {
  flex-direction: row;
  padding: 0;
}

/* Left: disconnected tool fragments */
.l3-gfx-home__before {
  width: 44%;
  padding: 28px 18px 28px 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  flex-shrink: 0;
}
.l3-gfx-home__before-label {
  font-family: var(--l3-font-sans);
  font-size: 9px;
  font-weight: 500;
  color: var(--l3-ink-5);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding-bottom: 10px;
}
/* Each fragment: distinct height/indent, intentional arrangement */
.l3-gfx-home__frag {
  border: 1px solid var(--l3-line);
  border-radius: 4px;
  background: var(--l3-paper);
  flex-shrink: 0;
}
.l3-gfx-home__frag--a { height: 32px; opacity: 0.65; }
.l3-gfx-home__frag--b { height: 20px; opacity: 0.40; margin-left: 14px; }
.l3-gfx-home__frag--c { height: 40px; opacity: 0.55; }
.l3-gfx-home__frag--d { height: 24px; opacity: 0.30; margin-left: 22px; }
.l3-gfx-home__frag--e { height: 34px; opacity: 0.50; margin-left: 8px; margin-right: 10px; }

/* Center divider */
.l3-gfx-home__divide {
  width: 1px;
  background: var(--l3-line-strong);
  align-self: stretch;
  margin: 24px 0;
  flex-shrink: 0;
}

/* Right: controlled operational layer */
.l3-gfx-home__after {
  flex: 1;
  padding: 28px 28px 28px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  justify-content: center;
}
.l3-gfx-home__after-head {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.l3-gfx-home__after-title {
  font-family: var(--l3-font-sans);
  font-size: 12px;
  font-weight: 600;
  color: var(--l3-ink);
  display: block;
}
.l3-gfx-home__after-sub {
  font-family: var(--l3-font-sans);
  font-size: 10px;
  font-weight: 500;
  color: var(--l3-ink-4);
  display: block;
}
/* The operational layer frame: dominant element */
.l3-gfx-home__layer {
  border: 1.5px solid var(--l3-ink-2);
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  flex-direction: row;
}
.l3-gfx-home__layer-col {
  flex: 1;
  padding: 13px 10px 14px;
  border-right: 1px solid var(--l3-line);
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.l3-gfx-home__layer-col:last-child { border-right: 0; }
.l3-gfx-home__col-name {
  font-family: var(--l3-font-sans);
  font-size: 11px;
  font-weight: 600;
  color: var(--l3-ink);
  display: block;
}
.l3-gfx-home__col-role {
  font-family: var(--l3-font-sans);
  font-size: 9px;
  font-weight: 500;
  color: var(--l3-ink-4);
  display: block;
}

/* =========================================================================
   PRODUCT — "System layers" architectural diagram
   ========================================================================= */
.l3-graphic--product {
  padding: 28px;
}
.l3-gfx-product__frame {
  flex: 1;
  border: 1.5px solid var(--l3-ink-2);
  border-radius: 6px;
  background: var(--l3-paper);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
}
.l3-gfx-product__frame-head {
  padding: 9px 16px;
  border-bottom: 1px solid var(--l3-line);
  background: var(--l3-paper-soft);
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.l3-gfx-product__layers {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
/* Each layer: horizontal band inside the frame */
.l3-gfx-product__layer {
  flex: 1;
  display: flex;
  flex-direction: row;
  border-bottom: 1px solid var(--l3-line);
  min-height: 0;
}
.l3-gfx-product__layer:last-child { border-bottom: 0; }
.l3-gfx-product__layer--core {
  flex: 1.5;  /* core layer gets more vertical space */
  background: var(--l3-paper);
}
.l3-gfx-product__layer--soft {
  background: var(--l3-paper-soft);
}
/* Left label column */
.l3-gfx-product__layer-tag {
  width: 90px;
  flex-shrink: 0;
  border-right: 1px solid var(--l3-line);
  padding: 14px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  justify-content: center;
}
.l3-gfx-product__layer-name {
  font-family: var(--l3-font-sans);
  font-size: 11px;
  font-weight: 600;
  color: var(--l3-ink);
  display: block;
}
.l3-gfx-product__layer-desc {
  font-family: var(--l3-font-sans);
  font-size: 9px;
  font-weight: 500;
  color: var(--l3-ink-4);
  display: block;
}
/* Right content column: nodes in a row */
.l3-gfx-product__layer-content {
  flex: 1;
  padding: 12px 14px;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0;
}
.l3-gfx-product__layer-node {
  border: 1px solid var(--l3-line-strong);
  border-radius: 4px;
  background: var(--l3-paper);
  padding: 7px 11px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex-shrink: 0;
}
.l3-gfx-product__layer--core .l3-gfx-product__layer-node {
  border-color: var(--l3-ink-3);
}
.l3-gfx-product__node-name {
  font-family: var(--l3-font-sans);
  font-size: 11px;
  font-weight: 600;
  color: var(--l3-ink);
  display: block;
}
.l3-gfx-product__node-sub {
  font-family: var(--l3-font-sans);
  font-size: 9px;
  font-weight: 500;
  color: var(--l3-ink-4);
  display: block;
}
.l3-gfx-product__node-path {
  height: 1px;
  background: var(--l3-line-strong);
  flex-shrink: 0;
  align-self: center;
}
.l3-gfx-product__node-path--flex { flex: 1; min-width: 8px; }

/* =========================================================================
   CONTROL — "Workflow checkpoint path" horizontal diagram
   ========================================================================= */
.l3-graphic--control {
  padding: 28px;
  justify-content: center;
}
.l3-gfx-control__diagram {
  display: flex;
  flex-direction: column;
  gap: 20px;
  flex: 1;
  justify-content: center;
}
/* Top: horizontal flow path */
.l3-gfx-control__flow {
  display: flex;
  flex-direction: row;
  align-items: stretch;
}
.l3-gfx-control__step {
  flex: 1;
  border: 1px solid var(--l3-line-strong);
  border-radius: 5px;
  background: var(--l3-paper);
  padding: 12px 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}
.l3-gfx-control__step--gate {
  border-color: var(--l3-ink-2);
  border-width: 1.5px;
  background: var(--l3-paper-soft);
}
.l3-gfx-control__step-num {
  font-family: var(--l3-font-sans);
  font-size: 9px;
  font-weight: 500;
  color: var(--l3-ink-5);
  display: block;
}
.l3-gfx-control__step-name {
  font-family: var(--l3-font-sans);
  font-size: 11px;
  font-weight: 600;
  color: var(--l3-ink);
  display: block;
}
.l3-gfx-control__step-role {
  font-family: var(--l3-font-sans);
  font-size: 9px;
  font-weight: 500;
  color: var(--l3-ink-4);
  display: block;
  margin-top: 2px;
}
.l3-gfx-control__arrow {
  width: 10px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: center;
}
.l3-gfx-control__arrow svg { display: block; }
/* Bottom: activity trace */
.l3-gfx-control__trace {
  display: flex;
  flex-direction: row;
  align-items: center;
  padding: 0 4px;
}
.l3-gfx-control__trace-dot {
  width: 5px; height: 5px;
  border-radius: 999px;
  background: var(--l3-ink-5);
  flex-shrink: 0;
}
.l3-gfx-control__trace-dot--filled { background: var(--l3-ink-4); }
.l3-gfx-control__trace-line {
  flex: 1;
  height: 1px;
  background: var(--l3-line);
}
.l3-gfx-control__trace-label {
  font-family: var(--l3-font-sans);
  font-size: 9px;
  font-weight: 500;
  color: var(--l3-ink-5);
  margin-left: 8px;
  white-space: nowrap;
}

/* =========================================================================
   DATA & ACCESS — "Record object with context surfaces"
   ========================================================================= */
.l3-graphic--data {
  padding: 28px;
  flex-direction: row;
  gap: 14px;
}
/* Left: dominant structured record card */
.l3-gfx-data__record {
  flex: 0 0 54%;
  border: 1.5px solid var(--l3-ink-2);
  border-top-width: 3px;
  border-radius: 6px;
  background: var(--l3-paper);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  align-self: flex-start;
}
.l3-gfx-data__record-head {
  padding: 12px 14px 10px;
  border-bottom: 1px solid var(--l3-line);
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex-shrink: 0;
}
.l3-gfx-data__record-title {
  font-family: var(--l3-font-sans);
  font-size: 12px;
  font-weight: 600;
  color: var(--l3-ink);
  display: block;
}
.l3-gfx-data__record-type {
  font-family: var(--l3-font-sans);
  font-size: 9px;
  font-weight: 500;
  color: var(--l3-ink-4);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  display: block;
}
.l3-gfx-data__record-fields {
  padding: 10px 14px 14px;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.l3-gfx-data__field {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
  border-bottom: 1px solid var(--l3-line);
}
.l3-gfx-data__field:last-child { border-bottom: 0; }
.l3-gfx-data__field-key {
  font-family: var(--l3-font-sans);
  font-size: 10px;
  font-weight: 500;
  color: var(--l3-ink-4);
  flex-shrink: 0;
  width: 52px;
}
.l3-gfx-data__field-val {
  height: 1px;
  background: var(--l3-line-strong);
}
.l3-gfx-data__field-val--s { width: 38%; }
.l3-gfx-data__field-val--m { width: 55%; }
.l3-gfx-data__field-val--l { width: 72%; }

/* Right: context surfaces stacked vertically */
.l3-gfx-data__surfaces {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-self: flex-start;
  width: 100%;
}
.l3-gfx-data__surface {
  border: 1px solid var(--l3-line-strong);
  border-radius: 5px;
  background: var(--l3-paper);
  overflow: hidden;
}
.l3-gfx-data__surface-head {
  padding: 7px 11px;
  border-bottom: 1px solid var(--l3-line);
  background: var(--l3-paper-soft);
}
.l3-gfx-data__surface-name {
  font-family: var(--l3-font-sans);
  font-size: 10px;
  font-weight: 600;
  color: var(--l3-ink-2);
  display: block;
}
.l3-gfx-data__surface-body {
  padding: 8px 11px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.l3-gfx-data__surface-row {
  height: 1px;
  background: var(--l3-line);
}
.l3-gfx-data__surface-row--s { width: 45%; }
.l3-gfx-data__surface-row--m { width: 68%; }
.l3-gfx-data__surface-row--l { width: 88%; }

/* =========================================================================
   USE CASES — "Four scenario flows" 2×2 editorial grid
   ========================================================================= */
.l3-graphic--usecases {
  padding: 28px;
}
.l3-gfx-uc__grid {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 10px;
  min-height: 0;
}
.l3-gfx-uc__scenario {
  border: 1px solid var(--l3-line-strong);
  border-radius: 5px;
  background: var(--l3-paper);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
}
.l3-gfx-uc__scenario-head {
  padding: 9px 12px;
  border-bottom: 1px solid var(--l3-line);
  background: var(--l3-paper-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}
.l3-gfx-uc__scenario-name {
  font-family: var(--l3-font-sans);
  font-size: 11px;
  font-weight: 600;
  color: var(--l3-ink);
  display: block;
}
.l3-gfx-uc__scenario-tag {
  font-family: var(--l3-font-sans);
  font-size: 9px;
  font-weight: 500;
  color: var(--l3-ink-4);
  display: block;
}
.l3-gfx-uc__scenario-body {
  flex: 1;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  justify-content: center;
  min-height: 0;
}
/* Horizontal mini-flow inside each scenario */
.l3-gfx-uc__flow {
  display: flex;
  flex-direction: row;
  align-items: center;
}
.l3-gfx-uc__flow-step {
  border: 1px solid var(--l3-line-strong);
  border-radius: 3px;
  background: var(--l3-paper);
  padding: 5px 8px;
  flex-shrink: 0;
}
.l3-gfx-uc__flow-step--gate {
  border-color: var(--l3-ink-3);
  background: var(--l3-paper-soft);
}
.l3-gfx-uc__flow-step-name {
  font-family: var(--l3-font-sans);
  font-size: 10px;
  font-weight: 600;
  color: var(--l3-ink-2);
  display: block;
  white-space: nowrap;
}
.l3-gfx-uc__flow-arrow {
  flex: 1;
  height: 1px;
  background: var(--l3-line-strong);
  min-width: 6px;
}
.l3-gfx-uc__outcome {
  font-family: var(--l3-font-sans);
  font-size: 9px;
  font-weight: 500;
  color: var(--l3-ink-4);
  display: block;
}

/* =========================================================================
   Responsive adjustments
   ========================================================================= */
@media (max-width: 1024px) {
  .l3-gfx-home__before { width: 42%; padding: 20px 14px 20px 20px; }
  .l3-gfx-home__after  { padding: 20px 20px 20px 14px; }
  .l3-graphic--product { padding: 20px; }
  .l3-graphic--control { padding: 20px; }
  .l3-graphic--data    { padding: 20px; }
  .l3-graphic--usecases { padding: 20px; }
  .l3-gfx-product__layer-tag { width: 78px; }
}
@media (max-width: 768px) {
  .l3-graphic--home { flex-direction: column; }
  .l3-gfx-home__before { width: 100%; flex-direction: row; padding: 16px 16px 8px; gap: 6px; }
  .l3-gfx-home__frag { height: 28px; flex: 1; margin: 0 !important; }
  .l3-gfx-home__before-label { display: none; }
  .l3-gfx-home__divide { width: 100%; height: 1px; margin: 0 16px; align-self: auto; }
  .l3-gfx-home__after  { padding: 12px 16px 16px; gap: 10px; }
  .l3-graphic--data { flex-direction: column; }
  .l3-gfx-data__record { flex: none; width: 100%; }
  .l3-gfx-data__surfaces { flex-direction: row; }
  .l3-gfx-control__step-role { display: none; }
}
@media (max-width: 640px) {
  .l3-gfx-uc__grid { grid-template-columns: 1fr; grid-template-rows: repeat(4, 1fr); }
  .l3-gfx__label { font-size: 11px; }
  .l3-gfx-control__flow { gap: 0; }
  .l3-gfx-control__arrow { width: 8px; }
}


/* ==========================================================================
   L3RA ADDITIONS — single clean block, no duplicates
   All classes here are new; no base class is redefined.
   ========================================================================== */


/* ── 1. Scroll-reveal ─────────────────────────────────────────────────── */

@media (prefers-reduced-motion: no-preference) {
  [data-reveal] {
    opacity: 0; transform: translateY(18px);
    transition: opacity .52s cubic-bezier(.22,.68,0,1.2),
                transform .52s cubic-bezier(.22,.68,0,1.2);
  }
  [data-reveal].is-visible { opacity: 1; transform: none; }

  [data-stagger] > * {
    opacity: 0; transform: translateY(12px);
    transition: opacity .42s cubic-bezier(.22,.68,0,1.2),
                transform .42s cubic-bezier(.22,.68,0,1.2);
  }
  [data-stagger].is-visible > * { opacity: 1; transform: none; }
  [data-stagger].is-visible > *:nth-child(1) { transition-delay:   0ms; }
  [data-stagger].is-visible > *:nth-child(2) { transition-delay:  60ms; }
  [data-stagger].is-visible > *:nth-child(3) { transition-delay: 120ms; }
  [data-stagger].is-visible > *:nth-child(4) { transition-delay: 180ms; }
  [data-stagger].is-visible > *:nth-child(5) { transition-delay: 240ms; }
  [data-stagger].is-visible > *:nth-child(6) { transition-delay: 300ms; }
  [data-stagger].is-visible > *:nth-child(7) { transition-delay: 360ms; }

  .steplist[data-stagger] > .steplist__row { transform: translateY(8px); }
  .steplist[data-stagger].is-visible > .steplist__row { transform: none; }
  .steplist[data-stagger].is-visible > .steplist__row:nth-child(1) { transition-delay:   0ms; }
  .steplist[data-stagger].is-visible > .steplist__row:nth-child(2) { transition-delay:  50ms; }
  .steplist[data-stagger].is-visible > .steplist__row:nth-child(3) { transition-delay: 100ms; }
  .steplist[data-stagger].is-visible > .steplist__row:nth-child(4) { transition-delay: 150ms; }
  .steplist[data-stagger].is-visible > .steplist__row:nth-child(5) { transition-delay: 200ms; }
  .steplist[data-stagger].is-visible > .steplist__row:nth-child(6) { transition-delay: 250ms; }
  .steplist[data-stagger].is-visible > .steplist__row:nth-child(7) { transition-delay: 300ms; }
}
@media (prefers-reduced-motion: reduce) {
  [data-reveal], [data-stagger] > * { opacity: 1; transform: none; transition: none; }
}


/* ── 2. Topbar scroll shadow ──────────────────────────────────────────── */

.topbar { transition: box-shadow .2s ease; }
.topbar.is-scrolled {
  box-shadow: 0 1px 0 var(--l3-line), 0 2px 12px rgba(0,0,0,.06);
}


/* ── 3. Hover states (extend base classes, no redefinition) ───────────── */

.card {
  transition: border-color var(--l3-dur-2) var(--l3-ease),
              box-shadow   var(--l3-dur-2) var(--l3-ease);
}
.card:hover {
  border-color: var(--l3-line-strong);
  box-shadow: 0 2px 10px rgba(0,0,0,.055);
}
.card--dark:hover {
  border-color: var(--l3-zinc-700);
  box-shadow: 0 2px 10px rgba(0,0,0,.25);
}

.layer { transition: border-color var(--l3-dur-2) var(--l3-ease); }
.layer:hover { border-color: var(--l3-line-strong); }

.deflist__row { transition: background var(--l3-dur-2) var(--l3-ease); }
.deflist__row:hover { background: var(--l3-paper-soft); }

.synth__row {
  transition: background var(--l3-dur-2) var(--l3-ease),
              border-color var(--l3-dur-2) var(--l3-ease);
}
.synth__row:hover {
  background: var(--l3-paper-soft);
  border-color: var(--l3-line-strong);
}

.flow__node { transition: background var(--l3-dur-2) var(--l3-ease); }
.flow__node:hover { background: var(--l3-paper-soft) !important; }

.case {
  transition: border-color var(--l3-dur-2) var(--l3-ease),
              box-shadow   var(--l3-dur-2) var(--l3-ease);
}
.case:hover { border-color: var(--l3-line-strong); box-shadow: 0 2px 8px rgba(0,0,0,.05); }

.footer__col li { transition: transform var(--l3-dur-2) var(--l3-ease); }
.footer__col li:hover { transform: translateX(2px); }

.capabilities__row { transition: background var(--l3-dur-2) var(--l3-ease); }
.capabilities__row:hover { background: var(--l3-paper); }

.btn--primary:active,
.btn--secondary:active { transform: translateY(1px); }

.arrowlink svg { transition: transform var(--l3-dur-2) var(--l3-ease); }
.arrowlink:hover svg { transform: translateX(4px); }

.l3-gfx-home__layer-col { transition: background .15s ease; }
.l3-gfx-home__layer-col:hover { background: var(--l3-paper-soft); }
.l3-gfx-control__step { transition: border-color .15s ease; }
.l3-gfx-control__step:hover { border-color: var(--l3-line-strong); }
.l3-gfx-uc__scenario { transition: border-color .15s ease; }
.l3-gfx-uc__scenario:hover { border-color: var(--l3-line-strong); }


/* ── 4. Route cards (base styles — not in site_new.css) ──────────────── */

.routecards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.routecards .routecard:last-child { grid-column: 1 / -1; }

.routecard {
  display: flex;
  flex-direction: column;
  padding: 32px;
  background: var(--l3-paper);
  border: 1px solid var(--l3-line);
  border-radius: 10px;
  text-decoration: none;
  color: inherit;
  transition: border-color var(--l3-dur-2) var(--l3-ease),
              box-shadow   var(--l3-dur-2) var(--l3-ease);
}
.routecard:hover {
  border-color: var(--l3-line-strong);
  box-shadow: 0 2px 10px rgba(0,0,0,.055);
}
.routecard__title {
  margin: 0 0 12px;
  font-family: var(--l3-font-sans);
  font-size: 20px; font-weight: 600;
  letter-spacing: -0.014em; line-height: 1.24;
  color: var(--l3-ink);
}
.routecard__body {
  margin: 0 0 28px;
  font-size: 15px; line-height: 1.62;
  color: var(--l3-ink-2); max-width: 46ch; flex: 1;
}
.routecard__cta {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13.5px; font-weight: 500; color: var(--l3-ink-3);
  margin-top: auto;
  transition: color var(--l3-dur-2) var(--l3-ease);
}
.routecard:hover .routecard__cta { color: var(--l3-ink); }
.routecard__cta svg { transition: transform var(--l3-dur-2) var(--l3-ease); }
.routecard:hover .routecard__cta svg { transform: translateX(3px); }

@media (max-width: 800px) {
  .routecards { grid-template-columns: 1fr; }
  .routecards .routecard:last-child { grid-column: auto; }
}


/* ── 5. Closestrip (dark CTA block — not in site_new.css) ────────────── */

.closestrip {
  background: var(--l3-night);
  border-radius: 10px;
  padding: 64px 72px;
  display: grid;
  grid-template-columns: minmax(0,1fr) auto;
  gap: 48px;
  align-items: center;
}
.closestrip__title {
  margin: 0;
  font-family: var(--l3-font-sans);
  font-size: 32px; font-weight: 600;
  letter-spacing: -0.02em; line-height: 1.18;
  color: var(--l3-night-ink); max-width: 24ch;
}
.closestrip__actions { display: flex; gap: 12px; flex-wrap: wrap; flex-shrink: 0; }

@media (max-width: 960px) {
  .closestrip { padding: 48px 40px; grid-template-columns: 1fr; gap: 28px; }
  .closestrip__title { font-size: 26px; }
}
@media (max-width: 640px) {
  .closestrip { padding: 36px 28px; }
  .closestrip__title { font-size: 22px; }
}


/* ── 6. Demo-hero layout + form card (not in site_new.css) ───────────── */

.demo-hero__layout {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 80px;
  align-items: start;
  padding: 96px 0 112px;
}
.demo-hero__title {
  margin: 0;
  font-family: var(--l3-font-sans);
  font-weight: 700; font-size: 52px;
  line-height: 1.06; letter-spacing: -0.026em;
  color: var(--l3-ink);
}
.demo-hero__sub {
  margin: 26px 0 0;
  font-size: 17px; line-height: 1.65;
  color: var(--l3-ink-2); max-width: 44ch;
}
.demo-hero__expect {
  margin-top: 40px;
  border-top: 1px solid var(--l3-line);
}
.demo-hero__expect__row {
  display: flex; align-items: flex-start; gap: 18px;
  padding: 18px 0; border-bottom: 1px solid var(--l3-line);
  font-size: 15px; line-height: 1.6; color: var(--l3-ink-2);
}
.demo-hero__expect__row__k {
  font-size: 12.5px; font-weight: 500;
  color: var(--l3-ink-3); flex-shrink: 0;
  padding-top: 2px; min-width: 24px;
}

.demo-form {
  background: var(--l3-paper);
  border: 1px solid var(--l3-line);
  border-radius: 10px;
  padding: 40px 44px;
  position: sticky;
  top: 88px;
}
.demo-form__label {
  display: block;
  font-size: 12.5px; font-weight: 500;
  color: var(--l3-ink-3); margin-bottom: 12px;
}
.demo-form__heading {
  margin: 0 0 30px;
  font-family: var(--l3-font-sans);
  font-size: 22px; font-weight: 600;
  letter-spacing: -0.013em; line-height: 1.28;
  color: var(--l3-ink);
}

@media (max-width: 960px) {
  .demo-hero__layout { grid-template-columns: 1fr; gap: 48px; padding: 72px 0 88px; }
  .demo-form { position: static; }
}
@media (max-width: 640px) {
  .demo-hero__title { font-size: 38px; }
}


/* ── 7. Mechanism cards 2×2 (not in site_new.css) ─────────────────────── */

.mech-grid-2x2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(12px, 1.5vw, 16px);
  margin-top: clamp(48px, 6vw, 72px);
}
.mech-card {
  background: var(--l3-paper);
  border-radius: 12px; overflow: hidden;
  display: flex; flex-direction: column;
  border: 1px solid var(--l3-line);
  transition: border-color var(--l3-dur-2) var(--l3-ease),
              box-shadow   var(--l3-dur-2) var(--l3-ease);
}
.mech-card:hover {
  border-color: var(--l3-line-strong);
  box-shadow: 0 2px 10px rgba(0,0,0,.055);
}
.mech-visual {
  aspect-ratio: 16 / 9;
  background: var(--l3-paper-soft);
  position: relative; overflow: hidden;
  border-bottom: 1px solid var(--l3-line);
}
.mech-visual-inner {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  padding: clamp(16px, 4%, 32px);
}
.mech-body {
  padding: clamp(20px, 3%, 28px);
  display: flex; flex-direction: column; gap: 8px; flex: 1;
}
.mech-num {
  font-size: 11px; font-weight: 500;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--l3-ink-3); margin-bottom: 2px;
}
.mech-card h3 {
  margin: 0;
  font-family: var(--l3-font-sans);
  font-size: clamp(16px, 1.4vw, 19px); font-weight: 600;
  letter-spacing: -0.012em; line-height: 1.24; color: var(--l3-ink);
}
.mech-card p {
  margin: 0;
  font-size: 14.5px; line-height: 1.6; color: var(--l3-ink-2);
}
.mech-skel     { background: var(--l3-line); border-radius: 4px; flex-shrink: 0; }
.mech-skel.sm  { height: 10px; opacity: .6; }
.mech-skel.md  { height: 18px; }
.mech-skel.row { width: 100%; }
.mech-skel.w80 { width: 80%; }
.mech-skel.w60 { width: 60%; }
.mech-skel.w40 { width: 40%; }
.mech-sk-col   { display: flex; flex-direction: column; gap: 7px; width: 100%; }
.mech-sk-row   { display: flex; gap: 7px; width: 100%; }
.mech-skel-node {
  height: 32px; flex: 1;
  border: 1px solid var(--l3-line-strong);
  border-radius: 6px; background: var(--l3-paper);
}
.mech-skel-node.soft { background: var(--l3-paper-soft); border-color: var(--l3-line); }
.mech-skel-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--l3-line-strong); flex-shrink: 0;
}
.mech-note {
  margin-top: clamp(24px, 3vw, 36px);
  padding: 18px 22px;
  background: var(--l3-paper-soft);
  border: 1px solid var(--l3-line); border-radius: 8px;
  font-size: 14px; color: var(--l3-ink-2); line-height: 1.65;
}
.mech-note strong { color: var(--l3-ink); font-weight: 600; }

@media (max-width: 840px) {
  .mech-grid-2x2 { grid-template-columns: 1fr; }
}



/* ── 8. Use case article (not in site_new.css) ────────────────────────── */

.usecase {
  border-top: 1px solid var(--l3-line);
  padding: 56px 0;
}
.usecase:last-of-type { border-bottom: 1px solid var(--l3-line); }

/* Head: index+title left, problem right */
.usecase__head {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
  margin-bottom: 40px;
}
.usecase__index {
  font-family: var(--l3-font-sans);
  font-size: 13px; font-weight: 500;
  color: var(--l3-ink-3);
  margin-bottom: 12px;
}
.usecase__title {
  margin: 0;
  font-family: var(--l3-font-sans);
  font-size: clamp(22px, 2.2vw, 28px); font-weight: 600;
  letter-spacing: -0.016em; line-height: 1.2;
  color: var(--l3-ink);
}
.usecase__problem {
  margin: 0;
  font-size: 16.5px; line-height: 1.65;
  color: var(--l3-ink-2);
  padding-top: 6px;
}

/* Body: rows of key → value */
.usecase__body {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--l3-line);
}
.usecase__row {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: clamp(20px, 3vw, 48px);
  padding: 24px 0;
  border-bottom: 1px solid var(--l3-line);
  align-items: start;
}
.usecase__row__k {
  font-family: var(--l3-font-sans);
  font-size: 13px; font-weight: 500;
  color: var(--l3-ink-3);
  padding-top: 4px;
}
.usecase__row__v {
  margin: 0;
  font-size: 15.5px; line-height: 1.62;
  color: var(--l3-ink-2);
}

/* CTA row */
.usecase__cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0 0;
  flex-wrap: wrap;
}
.usecase__cta__lbl {
  font-family: var(--l3-font-sans);
  font-size: 13px; color: var(--l3-ink-3);
}

@media (max-width: 840px) {
  .usecase__head { grid-template-columns: 1fr; gap: 16px; }
  .usecase__row  { grid-template-columns: 100px 1fr; gap: 16px; }
}
@media (max-width: 640px) {
  .usecase__row  { grid-template-columns: 1fr; gap: 8px; }
  .usecase__cta  { flex-direction: column; align-items: flex-start; }
}



/* ── Footer divider fix — remove redundant border on .footer__cols ── */
.footer__cols {
  border-top: none;
  padding-top: 0;
}


/* ── Footer plain li text — match link size ── */
.footer__col ul li {
  font-size: 14px;
  color: var(--l3-ink-2);
  line-height: 1.5;
}


/* ── Synth rows — table feel instead of floating cards ── */
.synth__rows {
  gap: 0;
  border: 1px solid var(--l3-line);
  border-radius: 6px;
  overflow: hidden;
}
.synth__row {
  border: none;
  border-bottom: 1px solid var(--l3-line);
  border-radius: 0;
  padding: 13px 16px;
}
.synth__row:last-child { border-bottom: none; }


/* ── 9. Infotiles — control.html governance block ────────────────────── */

.infotiles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 16px;
  margin-top: clamp(48px, 6vw, 72px);
}

.infotile {
  background: var(--l3-paper);
  border: 1px solid var(--l3-line);
  border-radius: 10px;
  padding: 28px 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color var(--l3-dur-2) var(--l3-ease);
}
.infotile:hover { border-color: var(--l3-line-strong); }
.infotile--soft { background: var(--l3-paper-soft); }

.infotile__label {
  font-size: 11px; font-weight: 500;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--l3-ink-3);
}
.infotile__title {
  font-family: var(--l3-font-sans);
  font-size: 18px; font-weight: 600;
  letter-spacing: -0.012em; line-height: 1.24;
  color: var(--l3-ink);
  margin-bottom: 4px;
}
.infotile__body {
  font-size: 14px; line-height: 1.62;
  color: var(--l3-ink-2);
}

/* Permission rows */
.infotile__perms { display: flex; flex-direction: column; gap: 8px; }
.infotile__perm-row {
  display: flex; align-items: center; gap: 10px;
  font-size: 13.5px;
}
.infotile__perm-role {
  font-weight: 500; color: var(--l3-ink);
  min-width: 72px; flex-shrink: 0;
}
.infotile__perm-bar {
  flex: 1; height: 1px;
  background: var(--l3-line-strong);
}
.infotile__perm-tag {
  font-size: 12px; font-weight: 500;
  color: var(--l3-ink-3);
  background: var(--l3-paper-soft);
  border: 1px solid var(--l3-line);
  padding: 3px 9px; border-radius: 4px;
  white-space: nowrap;
}

/* Chain nodes */
.infotile__chain {
  display: flex; align-items: center; gap: 0;
  flex-wrap: wrap;
}
.infotile__chain-node {
  font-size: 12.5px; font-weight: 500;
  color: var(--l3-ink);
  background: var(--l3-paper);
  border: 1px solid var(--l3-line-strong);
  padding: 5px 11px; border-radius: 5px;
  flex-shrink: 0;
}
.infotile__chain-arrow {
  flex: 1; height: 1px;
  background: var(--l3-line-strong);
  min-width: 12px; max-width: 28px;
}

/* State rows */
.infotile__states { display: flex; flex-direction: column; gap: 10px; }
.infotile__state-row {
  display: flex; align-items: center; gap: 10px;
  font-size: 13.5px; color: var(--l3-ink-2);
}
.infotile__state-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--l3-paper);
  border: 1.5px solid var(--l3-line-strong);
  flex-shrink: 0;
}
.infotile__state-dot--active {
  background: var(--l3-ink-2);
  border-color: var(--l3-ink-2);
}
.infotile__state-dot--done {
  background: var(--l3-ink-4);
  border-color: var(--l3-ink-4);
}
.infotile__state-owner {
  font-weight: 500; color: var(--l3-ink);
  margin-left: 4px;
}

/* demo-hero section wrapper — was missing */
.demo-hero {
  border-bottom: 1px solid var(--l3-line);
}

@media (max-width: 900px) {
  .infotiles { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 580px) {
  .infotiles { grid-template-columns: 1fr; }
}







/* ── Use case cards — each scenario is a distinct contained block ── */

.usecase {
  border: 1px solid var(--l3-line);
  border-radius: 10px;
  padding: 0;
  margin-bottom: 20px;
  overflow: hidden;
}
.usecase:last-of-type { margin-bottom: 0; border-bottom: 1px solid var(--l3-line); }

.usecase__head {
  padding: 40px 40px 36px;
  border-bottom: 1px solid var(--l3-line);
  background: var(--l3-paper-soft);
  margin-bottom: 0;
}

.usecase__body {
  border-top: none;
}

.usecase__row {
  padding: 28px 40px;
  border-bottom: 1px solid var(--l3-line);
  border-top: none;
}
.usecase__row + .usecase__row { border-top: none; }
.usecase__row:last-of-type { border-bottom: none; }

.usecase__row__k {
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--l3-ink-4); padding-top: 2px;
}

.usecase__cta {
  padding: 24px 40px;
  border-top: 1px solid var(--l3-line);
  background: var(--l3-paper-soft);
  margin-top: 0;
}



/* =========================================================================
   Design System Normalisation — targeted spec corrections
   Source: 16_L3RA_WEBSITE_MASTER_CONTEXT.md Section 6
   Spec: card gutters min 24px · card padding 28–32px · sections 120–160px
   ========================================================================= */

/* Section padding: 144px → 120px (lower bound of 120–160px spec) */
.sec          { padding: 120px 0; }
.sec--compact { padding: 88px 0; }

/* Card gutters: all grids to minimum 24px */
.routecards       { gap: 24px; }
.mech-grid-2x2    { gap: 24px; }
.infotiles        { gap: 24px; }
.usecase          { margin-bottom: 24px; }

/* Mechanism card body: consistent 28px padding (spec: 28–32px) */
.mech-body { padding: 24px 28px 28px; }

/* Infotile: symmetric padding */
.infotile { padding: 28px; }

/* Usecase row key column: wider for readability */
.usecase__row {
  grid-template-columns: 160px minmax(0, 1fr);
}

/* Sec head gap: tighten slightly for dense content pages */
.sec__head { margin-bottom: 56px; }

/* Eyebrow labels: normalise tracking — slight positive for readability */
.sec__eyebrow,
.pagehead__eyebrow {
  letter-spacing: 0.01em;
}



/* =========================================================================
   Visual refinements — section separators · background · routecards
   ========================================================================= */

/* 1. Softer section separators — rely on bg contrast, not hard borders */
.sec        { border-top: 1px solid rgba(0,0,0,.05); }
.sec--soft  { border-top: none; }
.sec--dark  { border-top: none; }

/* 2. Lighter paper-soft — more breathing, less gray pressure */
:root { --l3-paper-soft: #f7f7f8; }

/* 3. Routecards — 3 columns, no full-width orphan on last card */
.routecards {
  grid-template-columns: repeat(3, 1fr);
}
.routecards .routecard:last-child {
  grid-column: auto;
}

/* 4. Routecard icon */
.routecard__icon {
  font-size: 22px;
  color: var(--l3-ink-3);
  display: block;
  margin-bottom: 18px;
  transition: color var(--l3-dur-2) var(--l3-ease);
}
.routecard:hover .routecard__icon {
  color: var(--l3-ink);
}



/* =========================================================================
   Refinement pass — routing, flow ribbon, visual anchors
   ========================================================================= */

/* ── Routecards 2×2 variant ─────────────────────────────────────────── */
.routecards--2x2 {
  grid-template-columns: 1fr 1fr;
}
.routecards--2x2 .routecard:last-child {
  grid-column: auto;
}

/* ── Route CTA strip — separate from navigation cards ──────────────── */
.routecta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  margin-top: 20px;
  padding: 28px 32px;
  background: var(--l3-paper-soft);
  border: 1px solid var(--l3-line);
  border-radius: 10px;
}
.routecta__text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.routecta__label {
  font-family: var(--l3-font-sans);
  font-size: 14px;
  font-weight: 600;
  color: var(--l3-ink);
  margin: 0;
}
.routecta__body {
  font-size: 14px;
  color: var(--l3-ink-3);
  line-height: 1.55;
  margin: 0;
  max-width: 52ch;
}
@media (max-width: 720px) {
  .routecta { flex-direction: column; align-items: flex-start; gap: 20px; }
}

/* ── Canonical flow ribbon ──────────────────────────────────────────── */
.flow-ribbon {
  display: flex;
  align-items: center;
  gap: 0;
  margin: 32px 0 0;
  padding: 14px 20px;
  background: var(--l3-paper-soft);
  border: 1px solid var(--l3-line);
  border-radius: 8px;
  overflow-x: auto;
}
.flow-ribbon__node {
  font-family: var(--l3-font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--l3-ink-2);
  padding: 5px 12px;
  background: var(--l3-paper);
  border: 1px solid var(--l3-line-strong);
  border-radius: 5px;
  white-space: nowrap;
  flex-shrink: 0;
}
.flow-ribbon__arrow {
  font-size: 13px;
  color: var(--l3-ink-4);
  padding: 0 10px;
  flex-shrink: 0;
}

/* ── Layer card icon ────────────────────────────────────────────────── */
.layer__index i {
  opacity: 0.7;
}



/* ── Logo text mark ── */
.topbar__logo {
  font-family: var(--l3-font-sans);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--l3-ink);
  text-decoration: none;
}


/* ── Dark section deflist — override light hover background ── */
.sec--dark .deflist__row:hover {
  background: rgba(255, 255, 255, 0.04);
}
.sec--dark .deflist__row {
  border-bottom-color: var(--l3-night-line);
}

/* ── Infotiles section — reduce bottom padding when it's the last content block ── */
.sec:has(.infotiles) {
  padding-bottom: 88px;
}



/* ==========================================================================
   RESPONSIVE — full coverage
   Breakpoints: 1024px (tablet) · 768px (small tablet) · 640px (mobile)
   Rule: preserve desktop. Stack cleanly to 1-col on mobile.
   ========================================================================== */

/* ── 1024px — Tablet ───────────────────────────────────────────────────── */
@media (max-width: 1024px) {

  /* Container */
  .container { padding: 0 48px; }

  /* Section rhythm */
  .sec         { padding: 96px 0; }
  .sec--compact{ padding: 72px 0; }

  /* Heading sizes */
  .pagehead__title { font-size: 48px; }
  .sec__title      { font-size: 34px; }

  /* Card grids */
  .cardgrid-4 { grid-template-columns: 1fr 1fr; }
  .cardgrid-3 { grid-template-columns: 1fr 1fr; }

  /* Product layers: 3×2 → 2-col */
  .layers { gap: 12px; }

  /* Contrast block */
  .contrast { grid-template-columns: 1fr 1fr; }
  .contrast__cell:last-child { grid-column: 1 / -1; }

  /* Steps horizontal — allow wrap */
  .steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }

  /* Deflist: loosen gap */
  .deflist__row { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 32px; }

  /* Routecards 2×2 stays 2-col down to 768px */

  /* Usecase head */
  .usecase__head { gap: 32px; }
  .usecase__row  { grid-template-columns: 140px minmax(0,1fr); gap: 24px; }

}

/* ── 768px — Small tablet ───────────────────────────────────────────────── */
@media (max-width: 768px) {

  /* Container */
  .container { padding: 0 32px; }

  /* Topbar — hide nav links and trust text, keep logo */
  .topbar__nav { display: none; }
  .topbar__cta { display: none; }
  .topbar__inner { height: 60px; }

  /* Section rhythm */
  .sec         { padding: 80px 0; }
  .sec--compact{ padding: 60px 0; }
  .sec__head   { margin-bottom: 40px; }

  /* Heading */
  .pagehead__title { font-size: 40px; }
  .sec__title      { font-size: 30px; }
  .sec__body       { font-size: 16px; }

  /* Card grids → 1-col */
  .cardgrid-4 { grid-template-columns: 1fr; }
  .cardgrid-3 { grid-template-columns: 1fr; }
  .cardgrid-2 { grid-template-columns: 1fr; }

  /* Product layers → 1-col */
  .layers { gap: 10px; }

  /* Contrast → 1-col */
  .contrast { grid-template-columns: 1fr; }
  .contrast__cell:last-child { grid-column: auto; }
  .contrast__cell { border-right: none; border-bottom: 1px solid var(--l3-line); }
  .contrast__cell:last-child { border-bottom: none; }

  /* Steps → 2-col */
  .steps { grid-template-columns: 1fr 1fr; }
  .step:nth-child(2n) { border-right: none; }

  /* Deflist → stack */
  .deflist__row {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .deflist__k { font-size: 13px; padding-top: 0; }

  /* Steplist rows → simplify grid */
  .steplist__row {
    grid-template-columns: 56px minmax(0,1fr);
    gap: 16px;
  }
  .steplist__body { grid-column: 2; }

  /* Flow — horizontal scroll on small screens */
  .flow { overflow-x: auto; }

  /* Routecards 2×2 → 1-col */
  .routecards--2x2 { grid-template-columns: 1fr; }
  .routecards       { grid-template-columns: 1fr; }

  /* Mechanism cards → 1-col */
  .mech-grid-2x2 { grid-template-columns: 1fr; }

  /* Infotiles → 1-col */
  .infotiles { grid-template-columns: 1fr; }

  /* Usecase */
  .usecase__head { grid-template-columns: 1fr; gap: 16px; }
  .usecase__row  { grid-template-columns: 1fr; gap: 12px; padding: 24px 0; }
  .usecase__row__k { font-size: 10px; }
  .usecase__head  { padding: 28px 24px 24px; }
  .usecase__row   { padding: 24px; }
  .usecase__cta   { padding: 20px 24px; }

  /* Demo layout */
  .demo-hero__layout { padding: 64px 0 72px; }

  /* Footer */
  .footer__cols {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .footer { padding: 56px 0 48px; }

  /* Synth rows — hide last two columns */
  .synth__row {
    grid-template-columns: 80px 1fr auto;
    gap: 12px;
  }
  .synth__row__role { display: none; }

  /* Closestrip → stack */
  .closestrip { padding: 40px 32px; }

  /* Routecta → stack */
  .routecta { flex-direction: column; gap: 16px; }

}

/* ── 640px — Mobile ─────────────────────────────────────────────────────── */
@media (max-width: 640px) {

  /* Container */
  .container { padding: 0 20px; }

  /* Section rhythm */
  .sec         { padding: 64px 0; }
  .sec--compact{ padding: 48px 0; }
  .sec__head   { margin-bottom: 32px; }

  /* Hero */
  .pagehead { padding: 56px 0 72px; }
  .pagehead__title { font-size: 34px; letter-spacing: -0.02em; }
  .pagehead__sub   { font-size: 16px; }
  .pagehead__actions { flex-direction: column; align-items: flex-start; gap: 10px; }

  /* Section headings */
  .sec__title { font-size: 26px; }
  .sec__body  { font-size: 15px; }

  /* Typography */
  .pagehead__eyebrow { font-size: 11px; }
  .sec__eyebrow      { font-size: 11px; }

  /* Buttons full-width on mobile */
  .pagehead__actions .btn { width: 100%; justify-content: center; }

  /* Steps → 1-col */
  .steps { grid-template-columns: 1fr; }
  .step  { border-right: none; padding-right: 0; padding-left: 0; }
  .step + .step { padding-left: 0; border-top: 1px solid var(--l3-line); }

  /* Steplist → hide number col */
  .steplist__row { grid-template-columns: 1fr; gap: 8px; }
  .steplist__num { display: none; }
  .steplist__body { grid-column: auto; }
  .steplist__title { font-size: 18px; }
  .steplist__body  { font-size: 14px; }

  /* Synth rows → 2 cols only */
  .synth__row {
    grid-template-columns: 72px 1fr;
    gap: 10px;
  }
  .synth__row__status { display: none; }
  .synth__row__role   { display: none; }

  /* Flow ribbon → scroll */
  .flow-ribbon { padding: 10px 14px; gap: 0; }
  .flow-ribbon__node { font-size: 12px; padding: 4px 9px; }
  .flow-ribbon__arrow { padding: 0 6px; font-size: 12px; }

  /* Usecase */
  .usecase { margin-bottom: 16px; }
  .usecase__title { font-size: 20px; }
  .usecase__problem { font-size: 15px; }

  /* Form → 1-col */
  .form { grid-template-columns: 1fr; }
  .form__field--full { grid-column: auto; }
  .form__actions { flex-direction: column; align-items: stretch; }
  .form__actions .btn { width: 100%; justify-content: center; }

  /* Demo hero */
  .demo-hero__layout { padding: 48px 0 56px; }
  .demo-hero__title  { font-size: 32px; }
  .demo-hero__sub    { font-size: 15px; }

  /* Demo form */
  .demo-form { padding: 24px 20px; position: static; }

  /* Footer → 1-col */
  .footer__cols { grid-template-columns: 1fr; gap: 24px; }
  .footer__base { flex-direction: column; gap: 8px; align-items: flex-start; }
  .footer { padding: 48px 0 40px; }

  /* Routecard */
  .routecard { padding: 24px; }
  .routecards--2x2 { gap: 12px; }

  /* Mech cards */
  .mech-body { padding: 18px 20px 22px; }

  /* Infotiles */
  .infotiles { gap: 12px; }
  .infotile  { padding: 22px; }

  /* Closestrip */
  .closestrip { padding: 28px 20px; }
  .closestrip__title { font-size: 20px; }

  /* Endstrip → stack */
  .endstrip { flex-direction: column; align-items: flex-start; gap: 20px; padding: 24px 20px; }

  /* Layers grid */
  .layers { gap: 8px; }
  .layer  { padding: 20px; }
  .layer__name { font-size: 17px; }

  /* Deflist */
  .deflist__row { padding: 20px 0; }

  /* Card padding */
  .card { padding: 22px; }

  /* Topbar */
  .topbar__inner { height: 56px; }
  .topbar__logo  { font-size: 16px; }

}

/* =========================================================================
   MOTION & ANIMATION SYSTEM
   Scroll reveal, hover interactions, visual placeholder hints
   Enterprise-focused, calm, controlled
   ========================================================================= */

/* Global animation setup */
@media (prefers-reduced-motion: no-preference) {
  :root {
    --l3-dur-reveal: 0.6s;
    --l3-dur-stagger: 0.08s;
    --l3-dur-hover: 0.2s;
    --l3-dur-flow: 0.5s;
    --l3-ease-reveal: cubic-bezier(0.4, 0, 0.2, 1);
    --l3-ease-hover: cubic-bezier(0.4, 0, 0.2, 1);
  }

  /* Scroll reveal base state */
  [data-reveal],
  .sec__head,
  .card,
  .routecard,
  .usecase,
  .case,
  .layer,
  .mech-card,
  .flow,
  .steplist__row,
  .form,
  .demo-form,
  .endstrip,
  .closestrip {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity var(--l3-dur-reveal) var(--l3-ease-reveal),
                transform var(--l3-dur-reveal) var(--l3-ease-reveal);
  }

  /* Reveal state when in viewport */
  [data-in-view="true"],
  [data-reveal][data-in-view="true"] {
    opacity: 1;
    transform: translateY(0);
  }

  /* Staggered reveal */
  [data-stagger-index] {
    transition-delay: calc(var(--l3-stagger-delay, 80ms) * var(--l3-stagger-index, 0));
  }

  [data-stagger-index][data-in-view="true"] {
    opacity: 1;
    transform: translateY(0);
  }

  /* Flow diagrams - sequential node reveal */
  .flow__node {
    opacity: 0;
    transform: translateY(12px);
  }

  .flow__node[data-in-view="true"] {
    opacity: 1;
    transform: translateY(0);
    transition-delay: calc(var(--l3-dur-flow) * var(--l3-flow-index, 0) / 6);
  }

  /* Adjust flow transition timing */
  .flow__node {
    transition: opacity calc(var(--l3-dur-flow) / 1.5) var(--l3-ease-reveal),
                transform calc(var(--l3-dur-flow) / 1.5) var(--l3-ease-reveal);
  }

  /* Visual placeholder subtle animation hints */
  .pagehead__graphic-placeholder {
    position: relative;
  }

  .l3-gfx-home__frag {
    opacity: 0.85;
    transition: opacity 0.8s var(--l3-ease-reveal) 0.2s;
  }

  .pagehead__graphic-placeholder[data-in-view="true"] .l3-gfx-home__frag {
    opacity: 1;
  }

  /* Workflow path animation */
  .l3-gfx-control__step {
    opacity: 0.7;
    transition: opacity 0.6s var(--l3-ease-reveal);
  }

  .pagehead__graphic-placeholder[data-in-view="true"] .l3-gfx-control__step {
    opacity: 1;
  }

  .l3-gfx-control__step--gate {
    transition: opacity 0.6s var(--l3-ease-reveal);
  }

  /* Record field reveal */
  .l3-gfx-data__field {
    opacity: 0.6;
    transition: opacity 0.5s var(--l3-ease-reveal);
  }

  .pagehead__graphic-placeholder[data-in-view="true"] .l3-gfx-data__field {
    opacity: 1;
  }

  /* Activity timeline dots */
  .l3-gfx-control__trace-dot {
    opacity: 0.4;
    transition: opacity 0.5s var(--l3-ease-reveal);
  }

  .pagehead__graphic-placeholder[data-in-view="true"] .l3-gfx-control__trace-dot {
    opacity: 1;
  }

  /* Hover interactions - delicate, enterprise */
  .card:hover,
  .routecard:hover,
  .usecase:hover,
  .case:hover,
  .layer:hover,
  .mech-card:hover {
    transform: translateY(-2px);
    transition: all var(--l3-dur-hover) var(--l3-ease-hover);
  }

  .card,
  .routecard,
  .usecase,
  .case,
  .layer,
  .mech-card {
    transition: transform var(--l3-dur-hover) var(--l3-ease-hover),
                background-color var(--l3-dur-hover) var(--l3-ease-hover),
                border-color var(--l3-dur-hover) var(--l3-ease-hover);
  }

  /* Card border subtle change on hover */
  .card {
    border: 1px solid var(--l3-line);
  }

  .card:hover {
    border-color: var(--l3-line-strong);
  }

  /* Button hover states */
  .btn {
    transition: background-color var(--l3-dur-hover) var(--l3-ease-hover),
                color var(--l3-dur-hover) var(--l3-ease-hover),
                border-color var(--l3-dur-hover) var(--l3-ease-hover);
  }

  /* Routecard - arrow hint on hover */
  .routecard__cta {
    transition: transform var(--l3-dur-hover) var(--l3-ease-hover),
                opacity var(--l3-dur-hover) var(--l3-ease-hover);
  }

  .routecard:hover .routecard__cta svg {
    transform: translateX(2px);
  }

  .routecard__cta svg {
    transition: transform var(--l3-dur-hover) var(--l3-ease-hover);
  }

  /* Footer link hover */
  .footer a {
    transition: color var(--l3-dur-hover) var(--l3-ease-hover);
  }

  .footer a:hover {
    color: var(--l3-ink);
  }

  /* Form input focus polish */
  .form__input,
  .form__textarea {
    transition: border-color var(--l3-dur-hover) var(--l3-ease-hover),
                background-color var(--l3-dur-hover) var(--l3-ease-hover),
                box-shadow var(--l3-dur-hover) var(--l3-ease-hover);
  }

  .form__input:focus,
  .form__textarea:focus {
    outline: none;
    border-color: var(--l3-ink-2);
    background-color: var(--l3-paper);
  }

  /* Layer card hover - subtle background */
  .layer {
    transition: background-color var(--l3-dur-hover) var(--l3-ease-hover);
  }

  .layer:hover {
    background-color: rgba(0, 0, 0, 0.02);
  }

  /* Mech card hover */
  .mech-card {
    transition: transform var(--l3-dur-hover) var(--l3-ease-hover),
                box-shadow var(--l3-dur-hover) var(--l3-ease-hover);
  }

  /* Case study hover */
  .case {
    transition: transform var(--l3-dur-hover) var(--l3-ease-hover),
                background-color var(--l3-dur-hover) var(--l3-ease-hover);
  }

  .case:hover {
    background-color: var(--l3-paper-soft);
  }

  /* Contrast cells - subtle interaction */
  .contrast__cell {
    transition: background-color var(--l3-dur-hover) var(--l3-ease-hover),
                transform var(--l3-dur-hover) var(--l3-ease-hover);
  }

  .contrast__cell:hover {
    transform: translateY(-1px);
  }

  /* Arrow link hover */
  .arrowlink {
    transition: color var(--l3-dur-hover) var(--l3-ease-hover);
  }

  .arrowlink:hover svg {
    transform: translateX(2px);
    transition: transform var(--l3-dur-hover) var(--l3-ease-hover);
  }

  /* Tag hover */
  .tag {
    transition: background-color var(--l3-dur-hover) var(--l3-ease-hover),
                border-color var(--l3-dur-hover) var(--l3-ease-hover);
  }

  /* Step list row reveal */
  .steplist__row {
    opacity: 0;
    transform: translateY(20px);
  }

  .steplist__row[data-in-view="true"] {
    opacity: 1;
    transform: translateY(0);
    transition: opacity var(--l3-dur-reveal) var(--l3-ease-reveal),
                transform var(--l3-dur-reveal) var(--l3-ease-reveal);
  }

  .steplist__row:nth-child(2) {
    transition-delay: 0.08s;
  }
  .steplist__row:nth-child(3) {
    transition-delay: 0.16s;
  }
  .steplist__row:nth-child(4) {
    transition-delay: 0.24s;
  }
  .steplist__row:nth-child(5) {
    transition-delay: 0.32s;
  }

  /* Use case mini-flow animation */
  .usecase__row {
    opacity: 0;
    transform: translateY(12px);
  }

  .usecase[data-in-view="true"] .usecase__row {
    opacity: 1;
    transform: translateY(0);
    transition: opacity var(--l3-dur-reveal) var(--l3-ease-reveal),
                transform var(--l3-dur-reveal) var(--l3-ease-reveal);
  }

  .usecase__row:nth-child(2) {
    transition-delay: 0.12s;
  }
  .usecase__row:nth-child(3) {
    transition-delay: 0.24s;
  }
  .usecase__row:nth-child(4) {
    transition-delay: 0.36s;
  }

}

/* =========================================================================
   REDUCED MOTION SUPPORT
   Disable animations for users with prefers-reduced-motion
   ========================================================================= */

@media (prefers-reduced-motion: reduce) {
  [data-reveal],
  .sec__head,
  .card,
  .routecard,
  .usecase,
  .case,
  .layer,
  .mech-card,
  .flow,
  .steplist__row,
  .form,
  .demo-form,
  .endstrip,
  .closestrip {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .card:hover,
  .routecard:hover,
  .usecase:hover,
  .case:hover,
  .layer:hover,
  .mech-card:hover {
    transform: none;
  }

  .routecard:hover .routecard__cta svg,
  .arrowlink:hover svg {
    transform: none;
  }

  /* Keep only color/opacity changes, no motion */
  .btn,
  .footer a,
  .form__input,
  .form__textarea,
  .layer,
  .case,
  .contrast__cell,
  .tag {
    transition: color var(--l3-dur-hover) var(--l3-ease-hover),
                background-color var(--l3-dur-hover) var(--l3-ease-hover),
                border-color var(--l3-dur-hover) var(--l3-ease-hover);
  }
}