:root {
  --bg: #0f172a;
  --panel: #111827;
  --accent: #22d3ee;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --card: #1e293b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at 20% 20%, rgba(34,211,238,0.08), transparent 25%),
              radial-gradient(circle at 80% 0%, rgba(94,234,212,0.08), transparent 20%),
              var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--accent);
}

header {
  background: linear-gradient(135deg, rgba(34,211,238,0.1), rgba(94,234,212,0.08));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 48px 20px 32px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

header::after,
header::before {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.14;
}

header::before {
  background: #22d3ee;
  top: -140px;
  left: -60px;
}

header::after {
  background: #60a5fa;
  bottom: -140px;
  right: -60px;
}

header h1 {
  margin: 0 0 12px;
  font-size: clamp(32px, 4vw, 46px);
  letter-spacing: -0.02em;
}

header p {
  margin: 0 auto;
  max-width: 860px;
  color: var(--muted);
  font-size: 18px;
}

nav {
  position: sticky;
  top: 0;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  z-index: 10;
}

.navbar {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  gap: 14px;
}

.navbar strong {
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.nav-links a {
  color: var(--text);
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  font-size: 14px;
}

.nav-links a:hover,
.nav-links a.active {
  border-color: rgba(34, 211, 238, 0.4);
  background: rgba(34, 211, 238, 0.12);
  color: #e0f2fe;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 20px 72px;
}

section {
  margin-bottom: 48px;
}

h2 {
  font-size: 24px;
  margin-bottom: 16px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

h2 span.icon {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: rgba(34, 211, 238, 0.14);
  color: var(--accent);
  font-weight: 700;
}

.panel {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 14px;
  padding: 16px 18px;
  height: 100%;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-top: 16px;
}

figure {
  margin: 0;
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

figure img,
figure svg {
  width: 100%;
  display: block;
  max-height: 360px;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.02);
  padding: 10px;
}

figure figcaption {
  padding: 12px 14px 14px;
  color: var(--muted);
  font-size: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.timeline {
  position: relative;
  padding-left: 16px;
  border-left: 2px dashed rgba(255, 255, 255, 0.08);
  display: grid;
  gap: 18px;
}

.timeline-step {
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 14px 16px;
  position: relative;
}

.timeline-step::before {
  content: "";
  position: absolute;
  left: -18px;
  top: 18px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.15);
}

.footer-note {
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  margin-top: 40px;
}

.badge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin: 20px 0 10px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: rgba(34, 211, 238, 0.1);
  border-radius: 12px;
  border: 1px solid rgba(34, 211, 238, 0.2);
  color: #e0f2fe;
  font-size: 14px;
}

.badge span {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 9px;
  background: rgba(34, 211, 238, 0.16);
  font-weight: 700;
}

.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  padding: 12px 14px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text);
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-2px);
}

@media (max-width: 640px) {
  .navbar {
    flex-direction: column;
    align-items: flex-start;
  }

  nav {
    position: sticky;
  }
}