:root {
  --bg: #0b1224;
  --surface: #111a33;
  --panel: #162040;
  --text: #e8eefc;
  --muted: #93a0c2;
  --accent: #2563eb;
  --accent-bright: #3b82f6;
  --accent-dim: rgba(37, 99, 235, 0.2);
  --line: rgba(232, 238, 252, 0.1);
  --display: "Lexend", system-ui, sans-serif;
  --body: "Source Sans 3", "Source Sans Pro", system-ui, sans-serif;
  --max: 1100px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.wrap { width: min(100% - 2rem, var(--max)); margin-inline: auto; }

.header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(11, 18, 36, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease;
}
.header.is-scrolled { border-bottom-color: var(--line); }
.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.95rem 0;
}
.mark {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}
.nav { display: flex; gap: 1.35rem; }
.nav a { color: var(--muted); font-weight: 600; font-size: 0.92rem; }
.nav a:hover { color: var(--text); }
.menu-btn {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line);
  background: transparent;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}
.menu-btn span { display: block; width: 18px; height: 1px; background: var(--text); }

.hero {
  display: grid;
  grid-template-columns: 1.25fr 0.85fr;
  gap: 2rem;
  align-items: center;
  padding: 3.5rem 0 4rem;
}
.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-bright);
  margin-bottom: 1rem;
  animation: rise 0.75s ease both;
}
.hero h1 {
  font-family: var(--display);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  animation: rise 0.75s ease 0.08s both;
}
.lede {
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 34rem;
  margin-bottom: 1.75rem;
  animation: rise 0.75s ease 0.14s both;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  animation: rise 0.75s ease 0.2s both;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  border: none;
  border-radius: 0.55rem;
  padding: 0.9rem 1.3rem;
  cursor: pointer;
  font: inherit;
  transition: transform 0.2s ease, background 0.2s ease;
}
.btn:hover { transform: translateY(-1px); background: var(--accent-bright); }
.link {
  color: var(--muted);
  font-weight: 600;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.1rem;
}
.link:hover { color: var(--text); border-color: var(--accent); }

.hero-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1.5rem 1.35rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
  animation: rise 0.75s ease 0.16s both;
}
.card-label {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
}
.card-date {
  font-family: var(--display);
  font-size: 2.8rem;
  letter-spacing: -0.03em;
  color: var(--accent-bright);
  line-height: 1.1;
  margin: 0.25rem 0;
}
.card-meta { color: var(--muted); margin-bottom: 1rem; }
.hero-card ul { list-style: none; display: grid; gap: 0.5rem; }
.hero-card li {
  padding: 0.55rem 0.75rem;
  background: var(--surface);
  border-radius: 0.45rem;
  font-weight: 600;
  font-size: 0.92rem;
}

.section { padding: 3.5rem 0; }
.section-head { margin-bottom: 2rem; max-width: 30rem; }
.section-head h2 {
  font-family: var(--display);
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  letter-spacing: -0.02em;
}

.timeline {
  list-style: none;
  display: grid;
  gap: 0;
  border-left: 2px solid var(--line);
  margin-left: 0.5rem;
}
.timeline li {
  position: relative;
  padding: 0 0 1.75rem 1.5rem;
}
.timeline li::before {
  content: "";
  position: absolute;
  left: -0.45rem;
  top: 0.35rem;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-dim);
}
.week {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-bright);
  margin-bottom: 0.35rem;
}
.timeline h3 {
  font-family: var(--display);
  font-size: 1.25rem;
  margin-bottom: 0.35rem;
}
.timeline p { color: var(--muted); max-width: 36rem; }

.cohort {
  background: var(--surface);
  border-block: 1px solid var(--line);
  padding: 3.5rem 0;
}
.cohort-inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 2rem;
  align-items: center;
}
.cohort h2 {
  font-family: var(--display);
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  margin-bottom: 0.75rem;
}
.cohort p { color: var(--muted); }
.cohort-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}
.cohort-stats div {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  padding: 1.1rem 0.9rem;
  text-align: center;
}
.cohort-stats strong {
  display: block;
  font-family: var(--display);
  font-size: 1.7rem;
  color: var(--accent-bright);
  margin-bottom: 0.25rem;
}
.cohort-stats span { color: var(--muted); font-size: 0.82rem; font-weight: 600; }

.cert {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}
.cert-visual {
  background:
    linear-gradient(145deg, var(--accent-dim), transparent 50%),
    var(--panel);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 2.5rem 1.75rem;
  text-align: center;
}
.cert-visual p:first-child {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
}
.cert-name {
  font-family: var(--display);
  font-size: 2rem;
  margin: 1rem 0 0.5rem;
  color: var(--text);
}
.cert-course { color: var(--accent-bright); font-weight: 600; }
.cert h2 {
  font-family: var(--display);
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  margin-bottom: 0.75rem;
}
.cert p { color: var(--muted); }

.apply-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
}
.apply-panel h2 {
  font-family: var(--display);
  font-size: clamp(1.7rem, 3.5vw, 2.2rem);
  margin-bottom: 1.25rem;
}
.form { display: grid; gap: 0.9rem; max-width: 30rem; }
.form label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--muted);
}
.form input, .form textarea, .form select {
  width: 100%;
  padding: 0.85rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}
.form input:focus, .form textarea:focus, .form select:focus {
  outline: none;
  border-color: var(--accent);
}
.form-note { color: var(--accent-bright); font-size: 0.9rem; }

.footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1.5rem 0 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}
.footer a { color: var(--accent-bright); }

@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 860px) {
  .menu-btn { display: flex; }
  .nav {
    position: fixed;
    inset: 58px 0 auto;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    padding: 1.1rem 1.25rem 1.35rem;
    gap: 0.85rem;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s ease, opacity 0.25s ease;
  }
  .nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .hero, .cohort-inner, .cert { grid-template-columns: 1fr; }
  .cohort-stats { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}