HTML
<div class="tl15-scene">
<div class="tl15-wrap">
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<div class="tl15-icon" aria-hidden="true">◉</div>
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<span class="tl15-date">Jan 2022</span>
<span class="tl15-badge">Launch</span>
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<h3 class="tl15-title">Mission Alpha Initiated</h3>
<p class="tl15-body">Initial deployment of the orbital logistics platform. Four units synchronized across three continents within the first 72 hours of operation.</p>
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<div class="tl15-stat"><span class="tl15-stat-val">4</span><span class="tl15-stat-label">Units</span></div>
<div class="tl15-stat"><span class="tl15-stat-val">72h</span><span class="tl15-stat-label">Deploy</span></div>
<div class="tl15-stat"><span class="tl15-stat-val">99.2%</span><span class="tl15-stat-label">Uptime</span></div>
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</div>
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<div class="tl15-icon" aria-hidden="true">⚡</div>
<div class="tl15-meta">
<span class="tl15-date">Sep 2022</span>
<span class="tl15-badge">Upgrade</span>
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<h3 class="tl15-title">Propulsion Overhaul</h3>
<p class="tl15-body">Second-generation ion drives installed across the fleet, cutting fuel consumption by 38% and extending operational range by nearly 2,000km.</p>
<div class="tl15-stats">
<div class="tl15-stat"><span class="tl15-stat-val">−38%</span><span class="tl15-stat-label">Fuel</span></div>
<div class="tl15-stat"><span class="tl15-stat-val">+2k</span><span class="tl15-stat-label">km Range</span></div>
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</div>
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<div class="tl15-icon" aria-hidden="true">⚠</div>
<div class="tl15-meta">
<span class="tl15-date">Mar 2024</span>
<span class="tl15-badge">Critical</span>
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<h3 class="tl15-title">Communication Relay Failure</h3>
<p class="tl15-body">Ground station Echo suffered a 14-hour blackout. Autonomous recovery protocols activated; manual override restored full comms within 6 hours ahead of schedule.</p>
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<div class="tl15-stat"><span class="tl15-stat-val">14h</span><span class="tl15-stat-label">Outage</span></div>
<div class="tl15-stat"><span class="tl15-stat-val">6h</span><span class="tl15-stat-label">Recovery</span></div>
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</div>
<div class="tl15-item">
<div class="tl15-icon" aria-hidden="true">★</div>
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<span class="tl15-date">Nov 2025</span>
<span class="tl15-badge">Milestone</span>
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<h3 class="tl15-title">Global Coverage Achieved</h3>
<p class="tl15-body">The 24th satellite placed the network in geosynchronous alignment. Full polar coverage now enables sub-50ms latency for any point on Earth.</p>
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<div class="tl15-stat"><span class="tl15-stat-val">24</span><span class="tl15-stat-label">Satellites</span></div>
<div class="tl15-stat"><span class="tl15-stat-val"><50ms</span><span class="tl15-stat-label">Latency</span></div>
<div class="tl15-stat"><span class="tl15-stat-val">100%</span><span class="tl15-stat-label">Coverage</span></div>
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</div>
</div>
</div> CSS
.tl15-scene {
--tl15-bg: #08081a;
--tl15-accent: #7c3aed;
--tl15-accent-soft: #a78bfa;
background: var(--tl15-bg);
padding: 2.5rem 1.5rem;
font-family: 'Inter', system-ui, sans-serif;
}
.tl15-wrap {
max-width: 720px;
margin: 0 auto;
border-left: 1px solid rgba(124,58,237,0.3);
}
.tl15-item {
position: relative;
padding: 0 0 3rem 3rem;
}
.tl15-item:last-child { padding-bottom: 0; }
.tl15-item::before {
content: '';
position: absolute;
left: -1px;
top: 0;
height: 100%;
width: 1px;
background: linear-gradient(
to bottom,
rgba(124,58,237,0.8),
rgba(124,58,237,0.1)
);
}
.tl15-icon {
position: absolute;
left: -22px;
top: 0;
width: 44px;
height: 44px;
border-radius: 50%;
background: rgba(124,58,237,0.15);
border: 1px solid rgba(124,58,237,0.5);
display: flex;
align-items: center;
justify-content: center;
font-size: 16px;
color: var(--tl15-accent-soft);
box-shadow: 0 0 20px rgba(124,58,237,0.3);
}
.tl15-meta {
display: flex;
align-items: center;
gap: 0.75rem;
margin-bottom: 0.7rem;
}
.tl15-date {
font-family: ui-monospace, monospace;
font-size: 11px;
letter-spacing: 1.5px;
color: var(--tl15-accent);
text-transform: uppercase;
}
.tl15-badge {
font-family: ui-monospace, monospace;
font-size: 10px;
letter-spacing: 0.5px;
padding: 0.15rem 0.5rem;
background: rgba(124,58,237,0.15);
border: 1px solid rgba(124,58,237,0.3);
border-radius: 3px;
color: var(--tl15-accent-soft);
}
.tl15-title {
font-family: 'Inter', sans-serif;
font-size: 1.05rem;
font-weight: 700;
color: #fff;
margin: 0 0 0.5rem;
}
.tl15-body {
font-size: 13px;
color: rgba(255,255,255,0.45);
line-height: 1.7;
margin: 0 0 0.9rem;
}
.tl15-stats {
display: flex;
gap: 1.5rem;
flex-wrap: wrap;
}
.tl15-stat {
display: flex;
flex-direction: column;
gap: 0.15rem;
}
.tl15-stat-val {
font-family: ui-monospace, monospace;
font-size: 15px;
font-weight: 500;
color: var(--tl15-accent-soft);
}
.tl15-stat-label {
font-size: 10px;
color: rgba(255,255,255,0.3);
letter-spacing: 0.5px;
text-transform: uppercase;
}