:root {
  --bg: #0b0f17;
  --bg-alt: #0f1623;
  --panel: #131c2b;
  --panel-2: #18233650;
  --text: #e6edf6;
  --muted: #93a4bd;
  --border: #1f2c40;
  --accent: #4f9dff;
  --accent-2: #7c5cff;
  --green: #38d39f;
  --radius: 16px;
  --maxw: 1140px;
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.6);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 22px;
}

a { color: inherit; text-decoration: none; }

h1, h2, h3 { line-height: 1.15; margin: 0 0 .5em; letter-spacing: -0.02em; }

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .72rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 10px 25px -10px var(--accent);
}
.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); color: #fff; }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(11, 15, 23, 0.72);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand { display: inline-flex; align-items: center; gap: .55rem; font-weight: 800; font-size: 1.2rem; }
.brand-mark {
  font-family: "JetBrains Mono", monospace;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  padding: .15rem .4rem;
  border-radius: 8px;
  font-size: .9rem;
}
.nav-links { display: flex; align-items: center; gap: 1.5rem; }
.nav-links a { color: var(--muted); font-weight: 500; font-size: .95rem; transition: color .2s; }
.nav-links a:hover { color: var(--text); }
.nav-links .btn { color: var(--text); }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(900px 500px at 80% -10%, rgba(124, 92, 255, 0.18), transparent 60%),
    radial-gradient(800px 500px at 10% 10%, rgba(79, 157, 255, 0.16), transparent 55%);
  padding: 72px 0 0;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 48px;
  align-items: center;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .75rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 1rem;
}
.hero h1 { font-size: clamp(2.1rem, 4.4vw, 3.4rem); font-weight: 800; }
.lede { color: var(--muted); font-size: 1.08rem; max-width: 38ch; }
.lede strong { color: var(--text); font-weight: 600; }
.hero-cta { display: flex; gap: .8rem; margin: 1.6rem 0 2rem; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 2.2rem; list-style: none; padding: 0; margin: 0; }
.hero-stats li { display: flex; flex-direction: column; }
.hero-stats strong { font-size: 1.6rem; font-weight: 800; }
.hero-stats span { color: var(--muted); font-size: .85rem; }

/* Terminal */
.hero-terminal {
  background: #0a0e16;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.term-bar { display: flex; gap: .5rem; padding: .8rem 1rem; background: #0d1320; border-bottom: 1px solid var(--border); }
.term-bar span { width: 12px; height: 12px; border-radius: 50%; background: #2a3854; }
.term-bar span:nth-child(1) { background: #ff5f57; }
.term-bar span:nth-child(2) { background: #febc2e; }
.term-bar span:nth-child(3) { background: #28c840; }
.term-body {
  margin: 0;
  padding: 1.3rem 1.4rem;
  font-family: "JetBrains Mono", monospace;
  font-size: .9rem;
  line-height: 1.8;
  color: #c8d3e6;
  overflow-x: auto;
}
.term-body .c { color: var(--accent); }
.term-body .g { color: var(--green); }
.blink { animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* Marquee */
.marquee { margin-top: 60px; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); overflow: hidden; background: var(--bg-alt); }
.marquee-track { display: flex; gap: 1.5rem; white-space: nowrap; padding: 14px 0; width: max-content; animation: scroll 28s linear infinite; }
.marquee-track span { color: var(--muted); font-weight: 600; font-size: .95rem; }
.marquee-track span:nth-child(even) { color: var(--accent); }
@keyframes scroll { to { transform: translateX(-50%); } }

/* ---------- Sections ---------- */
.section { padding: 84px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { max-width: 640px; margin: 0 auto 48px; text-align: center; }
.section-head h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); font-weight: 800; }
.section-head p { color: var(--muted); margin: 0; }

.track-heading { grid-column: 1 / -1; margin: 56px 0 18px; font-size: 1.35rem; font-weight: 800; }
.card-grid + .track-heading:first-of-type { margin-top: 0; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.course-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform .18s ease, border-color .2s ease, box-shadow .25s ease;
}
.course-card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow); }
.course-card--wide { grid-column: span 3; display: grid; grid-template-columns: auto 1fr auto; gap: 24px; align-items: center; }
.course-card--wide .course-meta { justify-self: end; }
.course-icon { font-size: 1.8rem; margin-bottom: .6rem; }
.course-card h3 { font-size: 1.25rem; margin-bottom: .4rem; }
.course-card p { color: var(--muted); margin: 0 0 1rem; font-size: .96rem; }
.tags { display: flex; flex-wrap: wrap; gap: .4rem; list-style: none; padding: 0; margin: 0 0 1rem; }
.tags li { font-size: .72rem; font-weight: 600; color: var(--accent); background: var(--panel-2); border: 1px solid var(--border); padding: .2rem .6rem; border-radius: 999px; }
.course-meta { font-size: .82rem; color: var(--muted); font-weight: 600; }
.course-card--wide .course-icon, .course-card--wide p, .course-card--wide h3 { margin: 0; }

/* ---------- Features ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.feature h3 { font-size: 1.05rem; }
.feature p { color: var(--muted); margin: 0; font-size: .94rem; }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; list-style: none; padding: 0; margin: 0; counter-reset: step; }
.steps li { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; position: relative; }
.step-n { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 50%; font-weight: 800; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; margin-bottom: .8rem; }
.steps h3 { font-size: 1.05rem; }
.steps p { color: var(--muted); margin: 0; font-size: .92rem; }

/* ---------- Pricing ---------- */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.price-card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 26px; display: flex; flex-direction: column; position: relative; }
.price-card--featured { border-color: var(--accent); box-shadow: var(--shadow); transform: translateY(-6px); }
.badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; font-size: .72rem; font-weight: 700; padding: .25rem .8rem; border-radius: 999px; }
.price { font-size: 2.6rem; font-weight: 800; margin: .3rem 0 1rem; }
.price span { font-size: 1.3rem; vertical-align: super; color: var(--muted); }
.price small { font-size: .9rem; font-weight: 500; color: var(--muted); }
.price-card ul { list-style: none; padding: 0; margin: 0 0 1.6rem; flex: 1; }
.price-card li { padding: .45rem 0; border-bottom: 1px solid var(--border); color: var(--muted); font-size: .95rem; }
.price-card li::before { content: "✓ "; color: var(--green); font-weight: 700; }

/* ---------- Enroll ---------- */
.enroll { background: linear-gradient(135deg, rgba(79,157,255,0.08), rgba(124,92,255,0.08)); }
.enroll-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.enroll-copy h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
.enroll-copy p { color: var(--muted); }
.enroll-points { list-style: none; padding: 0; margin: 1.2rem 0 0; }
.enroll-points li { padding: .35rem 0; color: var(--text); }
.enroll-form { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.enroll-form label { display: block; font-size: .85rem; font-weight: 600; color: var(--muted); margin-bottom: 1rem; }
.enroll-form input, .enroll-form select, .enroll-form textarea {
  width: 100%;
  margin-top: .35rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: .7rem .8rem;
  color: var(--text);
  font: inherit;
  font-size: .95rem;
}
.enroll-form input:focus, .enroll-form select:focus, .enroll-form textarea:focus { outline: none; border-color: var(--accent); }
.form-note { font-size: .8rem; color: var(--muted); text-align: center; margin: .9rem 0 0; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-alt); padding: 48px 0 28px; }
.footer-grid { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.footer-tag { color: var(--muted); margin: .6rem 0 0; font-size: .92rem; }
.site-footer nav { display: flex; gap: 1.4rem; flex-wrap: wrap; }
.site-footer nav a { color: var(--muted); font-size: .92rem; }
.site-footer nav a:hover { color: var(--text); }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 22px; color: var(--muted); font-size: .82rem; }

/* ---------- Consulting ---------- */
.consulting-card-wrap {
  display: grid;
  grid-template-columns: 1fr;
}
.consulting-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform .18s ease, border-color .2s ease, box-shadow .25s ease;
}
.consulting-card:hover { transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow); }
.consulting-header {
  display: flex;
  align-items: center;
  gap: 14px;
}
.consulting-header .course-icon { margin-bottom: 0; }
.consulting-header h3 { margin-bottom: .25rem; }

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .hero-grid, .enroll-grid { grid-template-columns: 1fr; }
  .hero-terminal { order: -1; }
  .card-grid, .feature-grid, .price-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .course-card--wide { grid-column: span 2; grid-template-columns: 1fr; }
  .course-card--wide .course-meta { justify-self: start; }
}
@media (max-width: 640px) {
  .nav-links {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; gap: .4rem;
    background: var(--bg-alt); border-bottom: 1px solid var(--border);
    padding: 1rem 22px; display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: .4rem 0; }
  .nav-toggle { display: block; }
  .card-grid, .feature-grid, .price-grid, .steps { grid-template-columns: 1fr; }
  .course-card--wide { grid-column: span 1; }
  .price-card--featured { transform: none; }
  .hero-stats { gap: 1.4rem; }
}