:root {
  --bg: #f5f5f7;
  --bg-soft: #ffffffcc;
  --text: #1d1d1f;
  --text-muted: #6e6e73;
  --line: #d2d2d7;
  --accent: #0071e3;
  --accent-soft: #86c5ff;
  --radius: 20px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "SF Pro Display", "PingFang SC", "Helvetica Neue", sans-serif;
  background: radial-gradient(circle at 20% 10%, #ffffff 0%, #f5f5f7 40%, #ececf0 100%);
  color: var(--text);
  scroll-behavior: smooth;
  min-height: 100%;
}

canvas#particles {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-shell {
  position: relative;
  z-index: 1;
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: rgba(250, 250, 252, 0.7);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
}

.logo {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.menu {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.menu a {
  text-decoration: none;
  color: var(--text-muted);
  padding: 8px 12px;
  border-radius: 12px;
  transition: 0.25s ease;
  font-size: 0.92rem;
}

.menu a:hover,
.menu a.active {
  color: var(--text);
  background: #ffffff;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 36px 20px 72px;
}

.hero {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 26px;
  align-items: center;
  margin-top: 10px;
}

.glass {
  background: var(--bg-soft);
  border: 1px solid rgba(255, 255, 255, 0.75);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
}

.hero-card {
  padding: 34px;
}

.kicker {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.86rem;
  margin-bottom: 10px;
}

h1,
h2,
h3 {
  margin: 0 0 14px;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(1.9rem, 4vw, 3.2rem);
  line-height: 1.08;
}

p {
  margin: 0;
  color: var(--text-muted);
  line-height: 1.7;
}

.actions {
  margin-top: 22px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  border: 0;
  border-radius: 999px;
  padding: 11px 18px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #3da2ff);
  box-shadow: 0 10px 22px rgba(0, 113, 227, 0.28);
}

.btn-secondary {
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line);
}

.video-wrap {
  overflow: hidden;
  position: relative;
}

video {
  width: 100%;
  display: block;
  border-radius: var(--radius);
}

.video-badge {
  position: absolute;
  left: 16px;
  top: 16px;
  background: rgba(255, 255, 255, 0.85);
  color: var(--text);
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.8);
}

.grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card {
  padding: 22px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.12);
}

.card h3 {
  font-size: 1.05rem;
}

.timeline {
  margin-top: 22px;
  display: grid;
  gap: 12px;
}

.t-item {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 14px;
  align-items: start;
  padding: 16px;
}

.tag {
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
  padding-top: 2px;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.footer {
  margin-top: 40px;
  text-align: center;
  color: #8a8a90;
  font-size: 0.9rem;
}

.page-title {
  padding: 26px;
  margin-bottom: 20px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.stat {
  padding: 18px;
  text-align: center;
}

.stat strong {
  display: block;
  font-size: 1.35rem;
  margin-bottom: 6px;
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .grid {
    grid-template-columns: 1fr 1fr;
  }

  .stats {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .grid,
  .stats {
    grid-template-columns: 1fr;
  }

  .nav-wrap {
    gap: 10px;
    flex-direction: column;
    align-items: flex-start;
  }

  .menu {
    width: 100%;
  }

  .menu a {
    flex: 1;
    text-align: center;
  }

  .hero-card,
  .page-title,
  .card {
    padding: 20px;
  }

  .t-item {
    grid-template-columns: 1fr;
  }
}