<div class="tl22-wrap">
  <div class="tl22-track">
    <div class="tl22-station">
      <div class="tl22-top">ARCHIVED</div>
      <div class="tl22-node"></div>
      <div class="tl22-label">
        <div class="tl22-year">2019</div>
        <div class="tl22-name">REST API v1</div>
        <div class="tl22-sub">Deprecated</div>
      </div>
    </div>
    <div class="tl22-station">
      <div class="tl22-top">ARCHIVED</div>
      <div class="tl22-node"></div>
      <div class="tl22-label">
        <div class="tl22-year">2021</div>
        <div class="tl22-name">GraphQL Gateway</div>
        <div class="tl22-sub">Replaced 2024</div>
      </div>
    </div>
    <div class="tl22-station tl22-active">
      <div class="tl22-top">CURRENT</div>
      <div class="tl22-node"></div>
      <div class="tl22-label">
        <div class="tl22-year">2024</div>
        <div class="tl22-name">Edge Runtime</div>
        <div class="tl22-sub">Live · 99.98% uptime</div>
      </div>
    </div>
    <div class="tl22-station">
      <div class="tl22-top">PLANNED</div>
      <div class="tl22-node"></div>
      <div class="tl22-label">
        <div class="tl22-year">Q3 2026</div>
        <div class="tl22-name">WASM Runtime</div>
        <div class="tl22-sub">In development</div>
      </div>
    </div>
    <div class="tl22-station">
      <div class="tl22-top">CONCEPT</div>
      <div class="tl22-node"></div>
      <div class="tl22-label">
        <div class="tl22-year">2027+</div>
        <div class="tl22-name">Zero-latency Mesh</div>
        <div class="tl22-sub">Research phase</div>
      </div>
    </div>
  </div>
</div>

.tl22-wrap {
  background: #0d0f14;
  border-radius: 4px;
  padding: 2.5rem;
  overflow-x: auto;
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
}
.tl22-track {
  display: flex;
  align-items: flex-start;
  gap: 0;
  min-width: 700px;
  position: relative;
  padding-top: 3rem;
}
.tl22-track::before {
  content: '';
  position: absolute;
  top: calc(3rem + 16px);
  left: 0;
  right: 0;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    #1e2530 0px, #1e2530 8px,
    #2a3340 8px, #2a3340 12px
  );
}
.tl22-station {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}
.tl22-node {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #0d0f14;
  border: 3px solid #3a4a5c;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.tl22-node::after {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3a4a5c;
  transition: background 0.2s;
}
.tl22-active .tl22-node {
  border-color: #00e5ff;
  box-shadow: 0 0 20px rgba(0,229,255,0.3);
}
.tl22-active .tl22-node::after {
  background: #00e5ff;
  width: 10px;
  height: 10px;
}
.tl22-label {
  margin-top: 0.8rem;
  text-align: center;
}
.tl22-year {
  font-family: 'Space Mono', ui-monospace, monospace;
  font-size: 0.7rem;
  color: #3a4a5c;
  letter-spacing: 0.1em;
  margin-bottom: 0.2rem;
}
.tl22-active .tl22-year { color: #00e5ff; }
.tl22-name {
  font-family: 'Syne', 'Inter Tight', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  color: #8899aa;
  line-height: 1.3;
  max-width: 90px;
}
.tl22-active .tl22-name { color: #ccd6e0; }
.tl22-sub {
  font-family: 'DM Mono', ui-monospace, monospace;
  font-size: 0.55rem;
  color: #3a4a5c;
  margin-top: 0.2rem;
  max-width: 90px;
  line-height: 1.4;
}
.tl22-active .tl22-sub { color: #5a7a8c; }
.tl22-top {
  position: absolute;
  top: -3rem;
  font-family: 'DM Mono', ui-monospace, monospace;
  font-size: 0.55rem;
  color: #2a3340;
  letter-spacing: 0.1em;
  white-space: nowrap;
}
.tl22-active .tl22-top { color: #4a6070; }