/* Living workflow · horizontal nodes + active detail panel + cumulative chart */

.workflow {
  position: relative;
  border-radius: var(--r-2xl);
  padding: 36px 32px 32px;
  overflow: hidden;
  background:
    radial-gradient(80% 100% at 0% 0%,    color-mix(in srgb, var(--tier-a) 80%, transparent) 0%, transparent 60%),
    radial-gradient(80% 100% at 100% 100%, color-mix(in srgb, var(--tier-b) 70%, transparent) 0%, transparent 60%),
    radial-gradient(60% 80% at 60% 50%,    color-mix(in srgb, var(--tier-c) 50%, transparent) 0%, transparent 70%),
    linear-gradient(135deg, var(--bg) 0%, var(--bg-2) 100%);
  border: 1px solid rgba(255,255,255,0.75);
  box-shadow:
    0 1px 0 rgba(255,255,255,0.95) inset,
    0 24px 64px -20px var(--tier-glow),
    0 6px 18px -6px rgba(20,23,31,0.08);
}

/* Faint grid */
.workflow::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(20,23,31,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20,23,31,0.025) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 30%, transparent 80%);
  z-index: 0;
}
.workflow > * { position: relative; z-index: 1; }
.workflow .workflow-stage { z-index: 2; }

.workflow-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 28px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.workflow-head h2 { font-size: clamp(26px, 3vw, 38px); line-height: 1.1; }
.workflow-head .lede { font-size: 14.5px; }
.workflow-head h2 { color: var(--ink); max-width: 700px; }
.workflow-head .lede { color: var(--ink-3); max-width: 380px; }

.workflow-stage {
  position: relative;
  padding: 8px 0 0;
}

/* The track */
.workflow-track {
  position: absolute;
  left: 8%;
  right: 8%;
  top: 38px;
  height: 2px;
  background: linear-gradient(90deg,
    transparent,
    rgba(20,23,31,0.18) 6%,
    rgba(20,23,31,0.18) 94%,
    transparent
  );
  border-radius: 1px;
  z-index: 1;
  pointer-events: none;
}
.workflow-track-fill {
  position: absolute;
  left: 0; top: 0;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--tier-accent), var(--tier-accent-2, var(--tier-accent)));
  border-radius: 1px;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 16px var(--tier-glow);
}

.workflow-nodes {
  position: relative;
  display: flex;
  justify-content: space-between;
  padding: 0 0;
  z-index: 2;
  gap: 8px;
}

.wf-node {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  user-select: none;
  min-width: 0;
  padding-top: 60px;
}

.wf-node .step-num {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--ink-4);
  text-transform: uppercase;
  font-weight: 500;
}

.wf-node .dot-wrap {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: 48px; height: 48px;
  display: grid;
  place-items: center;
  z-index: 3;
}
.wf-node .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid rgba(20,23,31,0.20);
  position: relative;
  z-index: 3;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 8px rgba(20,23,31,0.10);
}
.wf-node .dot::after {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 1px solid rgba(20,23,31,0.06);
  transition: all 0.3s ease;
}

.wf-node:hover .dot,
.wf-node.active .dot {
  background: var(--tier-accent);
  border-color: var(--tier-accent);
  transform: scale(1.20);
  box-shadow:
    0 0 0 6px color-mix(in srgb, var(--tier-accent) 22%, transparent),
    0 8px 24px var(--tier-glow);
}
.wf-node:hover .dot::after,
.wf-node.active .dot::after {
  inset: -16px;
  border-color: color-mix(in srgb, var(--tier-accent) 35%, transparent);
}

.wf-node .step-label {
  margin-top: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  text-align: center;
  letter-spacing: -0.01em;
  line-height: 1.2;
  padding: 0 4px;
  min-height: 30px;
  transition: color 0.2s ease;
}
.wf-node.active .step-label { color: var(--ink); font-weight: 600; }

/* Tool logos preview */
.wf-node .step-tools {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-top: 6px;
  padding: 0 4px;
  height: 22px;
}
.wf-node .step-tools .tlogo-mini {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--paper);
  display: grid; place-items: center;
  margin-left: -6px;
  box-shadow: 0 2px 6px rgba(20,23,31,0.10);
  overflow: hidden;
  transition: transform 0.2s ease;
}
.wf-node .step-tools .tlogo-mini:first-child { margin-left: 0; }
.wf-node .step-tools .tlogo-mini .fb {
  font-family: var(--mono);
  font-size: 8px;
  font-weight: 600;
  color: var(--paper);
  width: 100%; height: 100%;
  display: grid; place-items: center;
  letter-spacing: -0.02em;
}
.wf-node:hover .step-tools .tlogo-mini { transform: translateY(-2px); }

/* ====================== DETAIL PANEL ====================== */
.wf-detail {
  position: relative;
  margin-top: 32px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.95);
  border-radius: var(--r-xl);
  padding: 24px 28px 28px;
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  box-shadow:
    0 1px 0 rgba(255,255,255,0.95) inset,
    0 12px 36px -12px rgba(20,23,31,0.12);
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.wf-detail-head {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.wf-detail .col-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin-bottom: 8px;
  font-weight: 500;
}
.wf-detail h3 {
  color: var(--ink);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  line-height: 1.15;
}
.wf-detail .desc {
  font-size: 14px;
  color: var(--ink-3);
  line-height: 1.55;
  margin-bottom: 14px;
  max-width: 60ch;
}
.wf-detail .output-block {
  background: linear-gradient(135deg, color-mix(in srgb, var(--tier-accent) 14%, transparent), color-mix(in srgb, var(--tier-accent) 4%, transparent));
  border: 1px solid color-mix(in srgb, var(--tier-accent) 30%, transparent);
  border-radius: var(--r-md);
  padding: 10px 16px;
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.5;
  font-family: var(--mono);
  letter-spacing: -0.005em;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.wf-detail .output-block .arrow {
  color: var(--tier-accent);
  font-weight: 600;
  flex-shrink: 0;
}

/* ====================== DATA-FLOW DIAGRAM ====================== */
.wf-flow {
  background: rgba(255,255,255,0.55);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  overflow: hidden;
}
.wf-flow .flow-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-4);
  font-weight: 500;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line-2);
}
.wf-flow .flow-head .live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--tier-accent);
  font-weight: 500;
}
.wf-flow .flow-head .live::before {
  content: ""; width: 6px; height: 6px;
  border-radius: 50%; background: var(--tier-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--tier-accent) 25%, transparent);
  animation: wfPulse 1.6s ease-in-out infinite;
}
@keyframes wfPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(0.7); opacity: 0.6; }
}

/* Each row in the flow: tool ·chunk·> tool */
.flow-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  font-size: 12.5px;
}
.flow-tool {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 12px 8px 8px;
  font-weight: 500;
  color: var(--ink-2);
  cursor: help;
  transition: all 0.18s ease;
  min-width: 0;
}
.flow-tool:hover {
  border-color: var(--tier-accent);
  box-shadow: 0 4px 14px var(--tier-glow);
  transform: translateY(-1px);
}
.flow-tool.right { justify-self: end; }
.flow-tool .ftm {
  width: 24px; height: 24px;
  border-radius: 6px;
  display: grid; place-items: center;
  background: rgba(255,255,255,0.9);
  flex-shrink: 0;
}
.flow-tool .ftm .ti { display: block; }
.flow-tool .ftm .fb {
  width: 100%; height: 100%;
  display: grid; place-items: center;
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  color: var(--paper);
  border-radius: 6px;
  letter-spacing: -0.02em;
}
.flow-tool .ftn { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* The connecting wire with payload */
.flow-wire {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 110px;
}
.flow-wire .wire {
  flex: 1;
  height: 2px;
  background:
    linear-gradient(90deg,
      transparent,
      var(--tier-accent) 12%,
      var(--tier-accent) 88%,
      transparent
    );
  position: relative;
  border-radius: 1px;
}
.flow-wire .wire::before,
.flow-wire .wire::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--tier-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--tier-accent) 22%, transparent);
  transform: translateY(-50%);
}
.flow-wire .wire::before { left: 4px; }
.flow-wire .wire::after  { right: 4px; }

/* Payload bubble · animated traveling */
.flow-wire .payload {
  position: absolute;
  top: -10px;
  left: 0;
  font-family: var(--mono);
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--paper);
  background: var(--ink);
  padding: 3px 8px;
  border-radius: 999px;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(20,23,31,0.18);
  animation: payloadTravel 4s cubic-bezier(0.45, 0, 0.55, 1) infinite;
}
.flow-wire .payload.proto-api    { background: var(--tier-accent); }
.flow-wire .payload.proto-webhook{ background: var(--ink); }
.flow-wire .payload.proto-event  { background: var(--mint-deep, var(--lav-darker)); }
.flow-wire .payload.proto-sql    { background: var(--sky-deep, var(--lav-mid)); }
.flow-wire .payload.proto-llm    { background: var(--lavender-deep, var(--lav-strong)); }
@keyframes payloadTravel {
  0%   { left: 4%;  opacity: 0; }
  15%  { opacity: 1; }
  85%  { opacity: 1; }
  100% { left: 96%; opacity: 0; transform: translateX(-100%); }
}

/* ====================== PAYLOAD PREVIEW (bottom of flow) ====================== */
.wf-flow-bottom {
  margin-top: 12px;
  padding: 14px;
  background:
    linear-gradient(160deg, rgba(20,23,31,0.96), rgba(20,23,31,0.92));
  color: rgba(255,255,255,0.92);
  border-radius: var(--r-md);
  border: 1px solid rgba(255,255,255,0.06);
  position: relative;
  overflow: hidden;
}
.wf-flow-bottom::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 80% at 100% 0%, color-mix(in srgb, var(--tier-accent) 30%, transparent), transparent 60%);
  pointer-events: none;
  opacity: 0.5;
}
.wf-flow-bottom > * { position: relative; z-index: 1; }

.payload-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  margin-bottom: 10px;
}
.pp-live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--tier-accent-2, var(--tier-accent));
  font-weight: 500;
}
.pp-live i {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--tier-accent-2, var(--tier-accent));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--tier-accent) 25%, transparent);
  animation: wfPulse 1.6s ease-in-out infinite;
}

.payload-rows {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--mono);
  font-size: 11.5px;
}
.payload-row {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 6px 0;
  border-bottom: 1px dashed rgba(255,255,255,0.06);
  position: relative;
  animation: payloadRowIn 0.35s ease both;
}
.payload-row:last-child { border-bottom: none; }
.payload-row:nth-child(2) { animation-delay: 0.08s; }
.payload-row:nth-child(3) { animation-delay: 0.16s; }
.payload-row:nth-child(4) { animation-delay: 0.24s; }
@keyframes payloadRowIn {
  from { opacity: 0; transform: translateX(-6px); }
  to   { opacity: 1; transform: translateX(0); }
}

.pp-proto {
  font-size: 9.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: center;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 500;
  background: rgba(255,255,255,0.10);
  color: rgba(255,255,255,0.85);
}
.pp-proto.pp-api     { background: var(--tier-accent); color: var(--paper); }
.pp-proto.pp-webhook { background: rgba(255,255,255,0.18); color: var(--paper); }
.pp-proto.pp-event   { background: var(--mint-deep);   color: var(--paper); }
.pp-proto.pp-sql     { background: var(--sky-deep);    color: var(--paper); }
.pp-proto.pp-llm     { background: var(--lavender-deep); color: var(--paper); }

.pp-line {
  font-size: 11.5px;
  color: rgba(255,255,255,0.85);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.pp-line b { font-weight: 500; color: var(--paper); }
.pp-line em {
  font-style: normal;
  color: var(--tier-accent-2, var(--tier-accent));
  margin: 0 6px;
  font-weight: 600;
}

.pp-pl {
  font-size: 10.5px;
  color: rgba(255,255,255,0.65);
  background: rgba(255,255,255,0.06);
  padding: 2px 8px;
  border-radius: 999px;
  white-space: nowrap;
}

.payload-result {
  margin-top: 10px;
  padding: 10px 12px;
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--tier-accent) 30%, transparent),
    color-mix(in srgb, var(--tier-accent-2, var(--tier-accent)) 18%, transparent));
  border: 1px solid color-mix(in srgb, var(--tier-accent) 40%, transparent);
  border-radius: 8px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--paper);
  display: flex;
  align-items: center;
  gap: 10px;
}
.pp-result-tag {
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 2px 7px;
  background: var(--paper);
  color: var(--ink);
  border-radius: 4px;
  font-weight: 600;
  flex-shrink: 0;
}

@media (max-width: 600px) {
  .payload-row { grid-template-columns: 56px 1fr; gap: 6px; }
  .payload-row .pp-pl { grid-column: 2; justify-self: start; }
}

/* multi-tool collapse · for steps with >2 tools we show a compact "fan" */
.flow-fan {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: stretch;
}
.flow-fan .flow-tool { width: 100%; justify-content: flex-start; }

@media (max-width: 1100px) {
  .wf-detail { padding: 20px 18px 22px; }
}
@media (max-width: 900px) {
  .workflow { padding: 36px 20px; }
  .workflow-track { display: none; }
  /* The sprawling dot rail read as unfinished: a huge empty left column, rows
     of dead space, grid lines showing through. The steps are now a tight stack
     of cards. Each wears its wheel-stage colour on the number chip, so the list
     and the wheel below it speak the same colour language, and the active step
     is the one card lit in its stage colour. */
  .workflow-nodes { flex-direction: column; gap: 9px; }
  .wf-node {
    --sc: #9F86EC;
    flex-direction: row; align-items: center; gap: 12px;
    width: 100%; margin: 0; padding: 12px 14px;
    background: #FCFAF7;
    border: 1.5px solid #FFFFFF; border-radius: 14px;
    box-shadow: 0 8px 18px -12px rgba(23, 42, 45, 0.18);
    text-align: left;
  }
  .wf-node--find  { --sc: #9F86EC; }
  .wf-node--reach { --sc: #6FA6E9; }
  .wf-node--run   { --sc: #3FCDAD; }
  .wf-node .dot-wrap { display: none; }
  .wf-node .step-num {
    position: static; transform: none; margin: 0;
    font-size: 10px; font-weight: 800; letter-spacing: 0.1em; line-height: 1;
    color: color-mix(in srgb, var(--sc) 72%, var(--ink));
    background: color-mix(in srgb, var(--sc) 14%, #FFFFFF);
    border: 1px solid color-mix(in srgb, var(--sc) 30%, #FFFFFF);
    padding: 7px 9px; border-radius: 9px; white-space: nowrap;
  }
  .wf-node .step-label { flex: 1; text-align: left; margin: 0; min-height: 0; font-size: 15px; }
  .wf-node .step-tools { justify-content: flex-end; margin: 0; }
  .wf-node.active {
    border-color: var(--sc);
    box-shadow: 0 14px 28px -14px color-mix(in srgb, var(--sc) 60%, rgba(23, 42, 45, 0.35));
  }
  .wf-node.active .step-num { background: var(--sc); border-color: var(--sc); color: #FFFFFF; }

  .flow-row { grid-template-columns: 1fr; }
  .flow-wire { transform: rotate(90deg); margin: 4px 0; }
  .flow-tool.right { justify-self: stretch; }
}

/* ====================== TOOL LOGO CHIPS ====================== */
.tlogo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px 6px 6px;
  border-radius: 999px;
  background: rgba(255,255,255,0.9);
  border: 1px solid rgba(20,23,31,0.08);
  font-size: 12.5px;
  color: var(--ink-2);
  font-weight: 500;
  letter-spacing: -0.005em;
  transition: all 0.18s ease;
  cursor: help;
  position: relative;
}
.tlogo:hover {
  background: var(--paper);
  border-color: var(--tier-accent);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px var(--tier-glow);
  color: var(--ink);
}
.tlogo-mark {
  width: 22px; height: 22px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: var(--paper);
  flex-shrink: 0;
  overflow: hidden;
}
.tlogo-fallback {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  color: var(--paper);
  width: 22px; height: 22px;
  display: grid; place-items: center;
  letter-spacing: -0.02em;
}
.tlogo-name { white-space: nowrap; }

.tlogo-dark {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.92);
  backdrop-filter: blur(8px);
}
.tlogo-dark .tlogo-mark { background: rgba(255,255,255,0.95); }

/* ====================== Bento ====================== */
.bento {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
  grid-auto-rows: minmax(180px, auto);
}
.bento-cell {
  background: rgba(255,255,255,0.78);
  border: 1px solid rgba(255,255,255,0.9);
  backdrop-filter: blur(16px) saturate(1.3);
  -webkit-backdrop-filter: blur(16px) saturate(1.3);
  border-radius: var(--r-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: all 0.25s ease;
  overflow: hidden;
  box-shadow: 0 1px 0 rgba(255,255,255,0.9) inset, 0 4px 16px rgba(20,23,31,0.04);
}
.bento-cell:hover {
  transform: translateY(-3px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.9) inset, 0 16px 40px -8px rgba(20,23,31,0.14);
}
.bento-cell.span-2 { grid-column: span 2; }
.bento-cell.span-3 { grid-column: span 3; }
.bento-cell.span-4 { grid-column: span 4; }
.bento-cell.row-2 { grid-row: span 2; }
.bento-cell.feature {
  background: linear-gradient(135deg, var(--ink) 0%, var(--ink-deep) 100%);
  color: var(--paper);
  border-color: rgba(255,255,255,0.08);
  position: relative;
  overflow: hidden;
}
.bento-cell.feature::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 80% at 100% 100%, var(--tier-glow) 0%, transparent 60%);
  pointer-events: none;
}
.bento-cell.feature > * { position: relative; z-index: 1; }
.bento-cell.feature h3 { color: var(--paper); }
.bento-cell.feature .desc { color: rgba(250, 247, 241, 0.72); }
.bento-cell .num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-4);
  margin-bottom: 18px;
  font-weight: 500;
}
.bento-cell.feature .num { color: rgba(250, 247, 241, 0.5); }
.bento-cell h3 {
  font-size: 19px;
  font-weight: 500;
  letter-spacing: -0.015em;
  margin-bottom: 10px;
  line-height: 1.25;
}
.bento-cell .desc {
  font-size: 14px;
  color: var(--ink-3);
  line-height: 1.55;
}

@media (max-width: 1000px) {
  .bento { grid-template-columns: repeat(2, 1fr); }
  .bento-cell.span-2, .bento-cell.span-3, .bento-cell.span-4 { grid-column: span 2; }
}
@media (max-width: 600px) {
  .bento { grid-template-columns: 1fr; }
  .bento-cell.span-2, .bento-cell.span-3, .bento-cell.span-4 { grid-column: span 1; }
}

/* Sidebar+detail (Demand Gen) */
.cap-sidebar {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 48px;
  align-items: start;
}
.cap-sidebar .rail {
  position: sticky;
  top: 88px;
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--line);
}
.cap-sidebar .rail button {
  text-align: left;
  background: transparent;
  border: none;
  padding: 14px 20px;
  cursor: pointer;
  font-family: var(--sans);
  font-size: 15px;
  color: var(--ink-3);
  border-left: 2px solid transparent;
  margin-left: -1px;
  transition: all 0.18s ease;
  letter-spacing: -0.005em;
  display: flex;
  align-items: center;
  gap: 12px;
}
.cap-sidebar .rail button:hover { color: var(--ink); }
.cap-sidebar .rail button.active {
  border-left-color: var(--tier-accent);
  color: var(--ink);
  font-weight: 500;
}
.cap-sidebar .rail button .idx {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-4);
  width: 28px;
  flex-shrink: 0;
}
.cap-sidebar .detail {
  background: rgba(255,255,255,0.78);
  border: 1px solid rgba(255,255,255,0.95);
  backdrop-filter: blur(16px);
  border-radius: var(--r-xl);
  padding: 40px;
  min-height: 460px;
  box-shadow: 0 1px 0 rgba(255,255,255,0.9) inset, 0 8px 24px rgba(20,23,31,0.06);
}
.cap-sidebar .detail h3 {
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin-bottom: 16px;
}
.cap-sidebar .detail .desc {
  font-size: 16px;
  color: var(--ink-3);
  line-height: 1.6;
  max-width: 60ch;
  margin-bottom: 32px;
}
.cap-sidebar .detail .preview {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(255,255,255,0.7);
  padding: 24px;
  margin-bottom: 24px;
}
@media (max-width: 900px) {
  .cap-sidebar { grid-template-columns: 1fr; }
  .cap-sidebar .rail { position: static; flex-direction: row; overflow-x: auto; border-left: none; border-bottom: 1px solid var(--line); }
  .cap-sidebar .rail button { white-space: nowrap; border-left: none; border-bottom: 2px solid transparent; }
  .cap-sidebar .rail button.active { border-bottom-color: var(--tier-accent); border-left: none; }
  .cap-sidebar .detail { padding: 28px; }
}

/* Itemized list (legacy · replaced) */
.cap-list { border-top: 1px solid var(--line); }
.cap-list-item {
  display: grid;
  grid-template-columns: 80px 1.2fr 2fr 80px;
  gap: 32px;
  align-items: start;
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  transition: background 0.15s ease;
}
.cap-list-item:hover { background: rgba(255,255,255,0.4); }
.cap-list-item .idx {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-4);
  letter-spacing: 0.05em;
  padding-top: 4px;
}
.cap-list-item h3 {
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.2;
}
.cap-list-item .desc {
  font-size: 15px;
  color: var(--ink-3);
  line-height: 1.55;
}
.cap-list-item .arrow {
  font-family: var(--mono);
  color: var(--ink-4);
  font-size: 18px;
  text-align: right;
  padding-top: 4px;
  transition: all 0.2s ease;
}
.cap-list-item:hover .arrow { color: var(--tier-accent); transform: translateX(4px); }
@media (max-width: 900px) {
  .cap-list-item { grid-template-columns: 40px 1fr; }
  .cap-list-item .desc { grid-column: 2; }
  .cap-list-item .arrow { display: none; }
}

/* ====================== Before/After v2 · vivid ====================== */
.ba-frame {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 16px;
  align-items: stretch;
  position: relative;
}
.ba-side {
  border-radius: var(--r-2xl);
  padding: 40px 36px;
  min-height: 420px;
  position: relative;
  overflow: hidden;
}
.ba-side.before {
  background: var(--color-brown-100);
  border: 1px solid var(--color-blue-50);
}
.ba-side.after {
  background: var(--color-violet-200);
  border: 1px solid var(--color-violet-400);
  box-shadow: 0 16px 40px -20px color-mix(in srgb, var(--color-purple-500) 28%, transparent);
}
.ba-side .ba-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.ba-side.before .ba-tag { background: rgba(20,23,31,0.06); color: var(--ink-3); }
.ba-side.after  .ba-tag { background: var(--ink); color: var(--paper); }
.ba-side .ba-tag::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
}
.ba-side.before .ba-tag::before { background: var(--ink-4); }
.ba-side.after  .ba-tag::before { background: var(--tier-accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--tier-accent) 30%, transparent); }
.ba-side h4 {
  font-family: var(--sans);
  font-size: clamp(22px, 2.4vw, 28px);
  letter-spacing: -0.02em;
  font-weight: 500;
  line-height: 1.15;
  margin-bottom: 24px;
  color: var(--ink);
}
.ba-side.before h4 { color: var(--ink-3); }
.ba-row-v2 {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  font-size: 15px;
  line-height: 1.45;
  border-bottom: 1px dashed rgba(20,23,31,0.10);
  color: var(--ink-2);
}
.ba-row-v2:last-child { border-bottom: none; }
.ba-row-v2 .icon {
  width: 22px; height: 22px;
  border-radius: 50%;
  flex-shrink: 0;
  display: grid; place-items: center;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  margin-top: 1px;
}
.ba-side.before .ba-row-v2 { color: var(--ink-3); }
.ba-side.before .ba-row-v2 .icon { background: rgba(20,23,31,0.08); color: var(--ink-4); }
.ba-side.before .ba-row-v2 .icon::before { content: "✕"; }
.ba-side.after  .ba-row-v2 { color: var(--color-text); font-weight: 500; }
.ba-side.after  .ba-row-v2 .icon { background: var(--color-purple-500); color: var(--color-base); box-shadow: 0 4px 10px color-mix(in srgb, var(--color-purple-500) 30%, transparent); }
.ba-side.after  .ba-row-v2 .icon::before { content: "✓"; }
.ba-side.after  .ba-tag { background: var(--color-purple-700); color: var(--color-base); }
.ba-side.after  .ba-tag::before { background: var(--color-violet-500); box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-violet-500) 35%, transparent); }
.ba-side.after  h4 { color: var(--color-text); }
.ba-side.before .ba-row-v2 { color: var(--color-blue-300); }
.ba-divider {
  width: auto;
  min-width: 0;
  display: grid;
  place-items: center;
  position: relative;
  align-self: center;
}
.ba-divider .arrow-pill {
  background: var(--color-text);
  color: var(--color-base);
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  position: relative;
  z-index: 2;
  box-shadow: 0 8px 20px rgba(20,23,31,0.18);
  position: relative;
  z-index: 2;
}
.ba-divider::before {
  content: "";
  position: absolute;
  top: 50%; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--ink-4), var(--tier-accent));
  opacity: 0.4;
}
@media (max-width: 900px) {
  .ba-frame { grid-template-columns: 1fr; }
  .ba-divider { width: auto; padding: 16px 0; }
  .ba-divider::before { display: none; }
}

/* ====================== Stack chips (real logos) ====================== */
.stack-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  align-items: start;   /* each chip sizes independently */
}
.stack-chip {
  position: relative;
  border: 1px solid var(--color-blue-50);
  background: var(--color-base);
  border-radius: var(--r-md);
  padding: 18px 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: stretch;
  transition:
    border-color 0.22s ease,
    border-radius 0.22s ease,
    box-shadow 0.22s ease;
  z-index: 1;
}
.stack-chip:hover {
  border-color: var(--page-accent, var(--color-violet-500));
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  box-shadow: 0 16px 40px -16px color-mix(in srgb, var(--page-accent, var(--color-violet-500)) 38%, transparent);
  z-index: 20;
}
.stack-chip-head { display: flex; flex-direction: column; gap: 8px; align-items: flex-start; }
.stack-chip .icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: var(--color-base);
  display: grid; place-items: center;
  border: 1px solid var(--color-blue-50);
  overflow: hidden;
}
.stack-chip .icon .fb {
  width: 100%; height: 100%;
  display: grid; place-items: center;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-base);
  letter-spacing: -0.02em;
}
.stack-chip .name {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--color-text);
}
.stack-chip .cat {
  font-family: var(--font-sans);
  font-size: 10.5px;
  color: var(--color-blue-300);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 500;
}

/* Hover-reveal block · absolutely positioned below the card so it overlays
   the next row instead of pushing the grid wider/taller. The card and the
   extra share matching borders so they read as one continuous unit. */
.stack-chip-extra {
  position: absolute;
  top: calc(100% - 1px);    /* overlap the card's bottom border */
  left: -1px;
  right: -1px;
  background: var(--color-base);
  border: 1px solid transparent;
  border-top: 1px dashed transparent;
  border-radius: 0 0 var(--r-md) var(--r-md);
  padding: 0 16px;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  z-index: 19;
  pointer-events: none;
  transition: max-height 0.28s ease, opacity 0.20s ease, padding 0.28s ease;
}
.stack-chip:hover .stack-chip-extra {
  max-height: 320px;
  opacity: 1;
  padding: 14px 16px 18px;
  border-color: var(--page-accent, var(--color-violet-500));
  border-top-color: var(--color-blue-50);
  pointer-events: auto;
  box-shadow: 0 16px 40px -16px color-mix(in srgb, var(--page-accent, var(--color-violet-500)) 38%, transparent);
}
.stack-chip-desc {
  margin: 0 0 12px;
  font-family: var(--font-sans);
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--color-blue-400);
}
.stack-chip-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  align-self: flex-start;
  padding: 8px 14px;
  border-radius: var(--radius-button);
  background: var(--color-cta);
  color: var(--color-base);
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0;
  text-decoration: none;
  transition: background 0.18s ease, padding 0.18s ease, gap 0.18s ease;
}
.stack-chip-cta:hover {
  background: var(--page-accent, var(--color-violet-500));
  color: var(--color-text);
  padding: 8px 12px;
  gap: 8px;
}
.stack-chip-arrow { transition: transform 0.18s ease; }
.stack-chip-cta:hover .stack-chip-arrow { transform: translateX(2px); }
@media (max-width: 900px) { .stack-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 500px) { .stack-grid { grid-template-columns: repeat(2, 1fr); } }


/* Icon-as-mask */
.ti {
  display: inline-block;
  width: var(--ti-size, 16px);
  height: var(--ti-size, 16px);
  background-color: var(--ti-color, currentColor);
  -webkit-mask: var(--ti-url) center / contain no-repeat;
          mask: var(--ti-url) center / contain no-repeat;
}

/* ====================== CUMULATIVE · SINGLE GROWING TREE ====================== */
/* One continuous trunk runs down the center. Each step branches outward
   from the trunk (fork bar → flow columns → merge bar) and rejoins it.
   Only the description text alternates left/right. */

.wf-cumulative {
  display: flex;
  justify-content: center;
}
.cum-chart {
  width: 100%;
  background: rgba(255,255,255,0.5);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 20px 24px 24px;
}
.cum-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-4);
  font-weight: 500;
  padding-bottom: 14px;
  border-bottom: 1px dashed color-mix(in srgb, var(--tier-accent) 22%, transparent);
  margin-bottom: 16px;
}
.cum-head .cum-tag { color: var(--ink-3); }
.cum-head .cum-live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--tier-accent);
}
.cum-head .cum-live i {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--tier-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--tier-accent) 25%, transparent);
  animation: wfPulse 1.6s ease-in-out infinite;
}

/* The trunk container · a single vertical spine running through every step */
.cum-trunk {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0;
}
/* The trunk: a dotted vertical guide that runs through every step */
.cum-trunk::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 18px;
  bottom: 18px;
  width: 0;
  border-left: 2px dotted color-mix(in srgb, var(--color-purple-500) 60%, transparent);
  transform: translateX(-50%);
  z-index: 0;
}

/* One row in the trunk: text on alternating side, tree always centered */
.trunk-step {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr minmax(280px, 460px) 1fr;
  gap: 0 24px;
  align-items: center;
  padding: 6px 0;
  animation: cumIn 0.32s ease both;
}
.trunk-step .tree-section { grid-column: 2; }
.trunk-step.text-right .trunk-text { grid-column: 3; text-align: left; }
.trunk-step.text-left .trunk-text  { grid-column: 1; text-align: right; }
@keyframes cumIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.trunk-text {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0 12px;
}
.trunk-text-head {
  display: flex;
  align-items: center;
  gap: 10px;
}
.trunk-step.text-right .trunk-text-head { justify-content: flex-start; }
.trunk-step.text-left  .trunk-text-head { justify-content: flex-end; }

.cum-num {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--paper);
  border: 1.5px solid color-mix(in srgb, var(--tier-accent) 30%, transparent);
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 600;
  color: var(--tier-accent);
  flex-shrink: 0;
}
.trunk-step.current .cum-num {
  background: var(--tier-accent);
  color: var(--paper);
  border-color: var(--tier-accent);
  box-shadow: 0 4px 14px var(--tier-glow);
}
.cum-step {
  font-size: 16px;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 0;
}
.cum-desc {
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ink-3);
  margin: 0;
}
.cum-now, .cum-prev {
  display: inline-block;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 500;
}
.trunk-step.text-right .cum-now,
.trunk-step.text-right .cum-prev { align-self: flex-start; }
.trunk-step.text-left .cum-now,
.trunk-step.text-left .cum-prev { align-self: flex-end; }
.cum-now {
  background: var(--tier-accent);
  color: var(--paper);
  box-shadow: 0 2px 8px var(--tier-glow);
}
.cum-prev {
  background: rgba(20,23,31,0.06);
  color: var(--ink-4);
}

/* Tree section · the per-step branching that grows from the trunk */
.tree-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 2;
}
/* Past steps stay fully visible · no fade */
.trunk-step.past .tree-section { opacity: 1; filter: none; }

/* Root pill · sits ON the trunk line at the top of each step */
.trunk-root {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px;
  background: var(--paper);
  border: 1.5px solid color-mix(in srgb, var(--tier-accent) 38%, transparent);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.01em;
  box-shadow: 0 4px 14px var(--tier-glow);
  position: relative;
  z-index: 2;
}
.trunk-step.current .trunk-root {
  background: linear-gradient(135deg, var(--tier-accent), var(--tier-accent-2));
  color: var(--paper);
  border-color: transparent;
}
.trunk-root-num {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--tier-accent);
  background: rgba(0,0,0,0.04);
  padding: 2px 7px;
  border-radius: 4px;
  font-weight: 600;
}
.trunk-step.current .trunk-root-num {
  color: var(--paper);
  background: rgba(255,255,255,0.18);
}
.trunk-root-name { font-weight: 500; }

/* Vertical drop from root → fork bar (dotted, with traveling dot) */
.trunk-fork {
  position: relative;
  width: 0;
  height: 10px;
  border-left: 2px dotted color-mix(in srgb, var(--color-purple-500) 55%, transparent);
}
.trunk-fork::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-purple-500);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-purple-500) 25%, transparent);
  transform: translateX(-50%);
  animation: forkPacket 3.6s cubic-bezier(0.4,0,0.2,1) infinite;
  pointer-events: none;
}
@keyframes forkPacket {
  0%   { top: 0%;   opacity: 0; }
  10%  { opacity: 1; }
  25%  { top: 100%; opacity: 1; }
  30%, 100% { opacity: 0; }
}

/* Fork bar + columns + merge bar */
.trunk-cols {
  position: relative;
  display: grid;
  gap: 10px;
  width: 100%;
  padding: 10px 0;
}
.trunk-cols[data-cols="1"] { grid-template-columns: 1fr; }
.trunk-cols[data-cols="2"] { grid-template-columns: repeat(2, 1fr); }
.trunk-cols[data-cols="3"] { grid-template-columns: repeat(3, 1fr); }
.trunk-cols[data-cols="4"] { grid-template-columns: repeat(4, 1fr); }

/* Top fork bar · dotted */
.trunk-cols[data-cols="2"]::before,
.trunk-cols[data-cols="3"]::before,
.trunk-cols[data-cols="4"]::before {
  content: "";
  position: absolute;
  top: 0;
  height: 0;
  border-top: 2px dotted color-mix(in srgb, var(--color-purple-500) 55%, transparent);
}
.trunk-cols[data-cols="2"]::before { left: 25%;     right: 25%; }
.trunk-cols[data-cols="3"]::before { left: 16.67%;  right: 16.67%; }
.trunk-cols[data-cols="4"]::before { left: 12.5%;   right: 12.5%; }

/* Bottom merge bar · dotted */
.trunk-cols[data-cols="2"]::after,
.trunk-cols[data-cols="3"]::after,
.trunk-cols[data-cols="4"]::after {
  content: "";
  position: absolute;
  bottom: 0;
  height: 0;
  border-top: 2px dotted color-mix(in srgb, var(--color-purple-500) 55%, transparent);
}
.trunk-cols[data-cols="2"]::after { left: 25%;     right: 25%; }
.trunk-cols[data-cols="3"]::after { left: 16.67%;  right: 16.67%; }
.trunk-cols[data-cols="4"]::after { left: 12.5%;   right: 12.5%; }

/* Each col: vertical drops to/from the bars */
.trunk-col {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.trunk-cols[data-cols="2"] .trunk-col::before,
.trunk-cols[data-cols="3"] .trunk-col::before,
.trunk-cols[data-cols="4"] .trunk-col::before,
.trunk-cols[data-cols="2"] .trunk-col::after,
.trunk-cols[data-cols="3"] .trunk-col::after,
.trunk-cols[data-cols="4"] .trunk-col::after {
  content: "";
  position: absolute;
  left: 50%;
  width: 0;
  height: 12px;
  border-left: 2px dotted color-mix(in srgb, var(--color-purple-500) 55%, transparent);
  transform: translateX(-50%);
}
.trunk-cols[data-cols="2"] .trunk-col::before,
.trunk-cols[data-cols="3"] .trunk-col::before,
.trunk-cols[data-cols="4"] .trunk-col::before { top: -10px; height: 10px; }
.trunk-cols[data-cols="2"] .trunk-col::after,
.trunk-cols[data-cols="3"] .trunk-col::after,
.trunk-cols[data-cols="4"] .trunk-col::after { bottom: -10px; height: 10px; }

/* Single-column step: collapse fork/merge bars to a straight wire */
.trunk-cols[data-cols="1"] {
  padding: 0;
  margin: 4px 0;
}

/* Merge dot · sits on the trunk below each step's branches.
   Pulses in sync with the column packets re-converging. */
.trunk-merge {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--color-purple-500);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-purple-500) 22%, transparent);
  margin-top: 4px;
  position: relative;
  z-index: 2;
  animation: mergePulse 3.6s cubic-bezier(0.4,0,0.2,1) infinite;
}
@keyframes mergePulse {
  0%, 50% { transform: scale(1); box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-purple-500) 22%, transparent); }
  62%     { transform: scale(1.5); box-shadow: 0 0 0 8px color-mix(in srgb, var(--color-purple-500) 30%, transparent); }
  85%, 100% { transform: scale(1); box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-purple-500) 22%, transparent); }
}
.trunk-step.current .trunk-merge {
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-purple-500) 32%, transparent);
}

/* Tree node · boxed tool with logo + name */
.tree-node {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--paper);
  border: 1px solid var(--line-2);
  border-radius: 10px;
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-2);
  box-shadow: 0 2px 6px rgba(20,23,31,0.04);
  width: 100%;
  justify-content: center;
  cursor: help;
  transition: border-color 0.18s ease, transform 0.18s ease;
  position: relative;
}
.tree-node:hover {
  border-color: var(--tier-accent);
  transform: translateY(-1px);
}
.tree-node .tn-mark {
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--paper);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.tree-node .tn-mark .fb {
  width: 100%; height: 100%;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 8.5px;
  font-weight: 700;
  color: var(--paper);
  border-radius: 50%;
}
.tree-node .tn-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Vertical wire between from and to nodes · dotted with two pulsing end-caps */
.tree-wire {
  position: relative;
  width: 0;
  height: 30px;
  border-left: 2px dotted color-mix(in srgb, var(--color-purple-500) 60%, transparent);
  align-self: center;
}
.tree-wire::before, .tree-wire::after {
  content: "";
  position: absolute;
  left: 50%;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--color-purple-500);
  transform: translateX(-50%);
  animation: capPulse 1.6s ease-in-out infinite;
}
.tree-wire::before { top: -3px; }
.tree-wire::after  { bottom: -3px; background: var(--color-orange-500); animation-delay: 0.8s; }
@keyframes capPulse {
  0%, 100% { box-shadow: 0 0 0 0 transparent; transform: translateX(-50%) scale(1); }
  50%      { box-shadow: 0 0 0 5px color-mix(in srgb, var(--color-purple-500) 22%, transparent); transform: translateX(-50%) scale(1.25); }
}

/* Animated payload · runs on EVERY tier, every column */
.tree-payload {
  position: absolute;
  left: 50%;
  top: 0;
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--paper);
  background: var(--ink);
  padding: 2px 8px;
  border-radius: 999px;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(20,23,31,0.18);
  transform: translate(-50%, -50%);
  animation: treePayloadTravel 3.6s cubic-bezier(0.45, 0, 0.55, 1) infinite;
  pointer-events: none;
}
.tree-payload.proto-api     { background: var(--tier-accent); }
.tree-payload.proto-webhook { background: var(--ink); }
.tree-payload.proto-event   { background: var(--mint-deep, var(--lav-darker)); }
.tree-payload.proto-sql     { background: var(--sky-deep, var(--lav-mid)); }
.tree-payload.proto-llm     { background: var(--lavender-deep, var(--lav-strong)); }
@keyframes treePayloadTravel {
  0%   { top: 0%;   opacity: 0; }
  15%  { opacity: 1; }
  85%  { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

@media (max-width: 900px) {
  .trunk-step {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 14px 0;
  }
  .trunk-step .tree-section { grid-column: 1; }
  .trunk-step.text-right .trunk-text,
  .trunk-step.text-left  .trunk-text {
    grid-column: 1;
    text-align: left;
    padding: 0;
  }
  .trunk-step.text-right .trunk-text-head,
  .trunk-step.text-left  .trunk-text-head { justify-content: flex-start; }
  .trunk-step.text-right .cum-now,
  .trunk-step.text-right .cum-prev,
  .trunk-step.text-left  .cum-now,
  .trunk-step.text-left  .cum-prev { align-self: flex-start; }
  .cum-trunk::before { display: none; }
}
@media (max-width: 600px) {
  .trunk-cols[data-cols="3"],
  .trunk-cols[data-cols="4"] { grid-template-columns: repeat(2, 1fr); }
  .trunk-cols::before,
  .trunk-cols::after { display: none; }
  .trunk-col::before,
  .trunk-col::after { display: none; }
}