body {
  margin: 0;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 17px;
  background: #0f172a;
  color: #f1f5f9;
  line-height: 1.65;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: auto;
}

.narrow {
  max-width: 750px;
}


/* ================= NAVIGATION ================= */

.nav {
  padding: 18px 0;
  background: #0f172a;
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-links {
  display: flex;
  align-items: center;
}

.nav a {
  color: #f1f5f9;
  margin-left: 28px;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}


/* ================= HERO ================= */

.hero {
  padding: 110px 0 10px 0;
  text-align: center;
}


/* ================= SECTIONS ================= */

.section {
  padding: 80px 0;
}

.section.light {
  background: #f1f5f9;
  color: #0f172a;
}

.section.dark {
  background: #0f172a;
  color: #f1f5f9;
}

.section h2 {
  text-align: center;
  margin-bottom: 50px;
}


/* ================= TIMELINE ================= */

.timeline {
  position: relative;
  max-width: 900px;
  margin: auto;
  padding: 40px 0;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  width: 2px;
  height: 100%;
  background: rgba(56, 189, 248, 0.25);
  transform: translateX(-50%);
}

.timeline-row {
  position: relative;
  width: 100%;
  margin: 80px 0;
  display: flex;
}

.timeline-row::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 20px;
  width: 14px;
  height: 14px;
  background: #0f172a;
  border: 3px solid #38bdf8;
  border-radius: 50%;
  transform: translateX(-50%);
}

.timeline-card {
  background: #1e293b;
  padding: 30px;
  border-radius: 14px;
  width: 42%;
  min-height: 180px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.35);
}

.timeline-card.left {
  margin-right: auto;
  text-align: right;
}

.timeline-card.right {
  margin-left: auto;
  text-align: left;
}

.timeline-card,
.timeline-card h3,
.timeline-card p,
.timeline-card span {
  color: #ffffff;
}


/* ================= FOOTER ================= */

.site-footer {
  padding: 60px 0 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}


/* Grid layout */

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 40px;
}


/* Left align */

.footer-col {
  text-align: left;
}


/* Navigation links */

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  text-decoration: none;
  color: #d1d5db;
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: #38bdf8;
}


/* ================= SOCIAL ICONS ================= */

.footer-social {
  display: flex;
  gap: 18px;
  margin-top: 10px;
}

.footer-social a {
  color: #cbd5f5;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s ease, transform 0.2s ease;
}

.footer-social a:hover {
  color: #38bdf8;
  transform: translateY(-2px);
}

.footer-social svg {
  width: 20px;
  height: 20px;
}


/* ================= FOOTER BOTTOM ================= */

.footer-bottom {
  text-align: center;
  padding: 25px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.9rem;
  color: #9ca3af;
}