:root {
  --bg: #070b17;
  --bg-soft: #0f1730;
  --panel: rgba(19, 28, 48, 0.76);
  --text: #e6eeff;
  --muted: #9eb2d9;
  --stroke: rgba(133, 167, 255, 0.25);
  --accent: #5edbff;
  --accent-2: #8d76ff;
  --shadow: 0 18px 44px rgba(2, 7, 19, 0.5);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% -10%, #182c5a 0%, #070b17 44%, #05070f 100%);
  line-height: 1.6;
}

img {
  max-width: 100%;
  display: block;
}

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

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(133, 167, 255, 0.22);
  background: rgba(6, 10, 19, 0.8);
  -webkit-backdrop-filter: blur(11px);
  backdrop-filter: blur(11px);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 0;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.2px;
}

.brand-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.brand-logo-surface {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  border-radius: 10px;
  border: 1px solid rgba(133, 167, 255, 0.35);
  margin-top: 0.35rem;
}

.brand-logo-surface img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--stroke);
  border-radius: 10px;
  padding: 0.45rem 0.7rem;
  color: var(--text);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.main-nav a {
  color: var(--muted);
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--accent);
}

.hero {
  padding: 5.2rem 0 4.4rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 1.4rem;
  align-items: center;
}

.eyebrow {
  font-size: 0.75rem;
  letter-spacing: 1.7px;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--accent);
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0 0 0.6rem;
}

h1 {
  font-size: clamp(1.95rem, 5.2vw, 3.3rem);
}

h2 {
  font-size: clamp(1.45rem, 3.8vw, 2.3rem);
}

.lead {
  color: #d6e4ff;
  font-size: clamp(1rem, 2.3vw, 1.15rem);
}

.hero-media,
.panel {
  border-radius: 18px;
  border: 1px solid var(--stroke);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero-media {
  overflow: hidden;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  border: 1px solid transparent;
  padding: 0.7rem 1.05rem;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:focus-visible,
.main-nav a:focus-visible,
summary:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-primary {
  color: #061124;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
}

.btn-secondary {
  border-color: rgba(94, 219, 255, 0.4);
  background: rgba(94, 219, 255, 0.12);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(94, 219, 255, 0.22);
}

.section {
  padding: 4.7rem 0;
}

.section-head {
  margin-bottom: 1.35rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  border: 1px solid var(--stroke);
  border-radius: 16px;
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: 1rem;
}

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

.link-accent {
  color: var(--accent);
  font-weight: 600;
}

.split-section {
  background: linear-gradient(180deg, rgba(84, 130, 255, 0.08), rgba(94, 219, 255, 0.02));
  border-top: 1px solid rgba(133, 167, 255, 0.2);
  border-bottom: 1px solid rgba(133, 167, 255, 0.2);
}

.split-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 1.2rem;
}

.course-card {
  overflow: hidden;
  padding: 0;
}

.course-card img {
  width: 100%;
  height: 220px;
  object-fit: contain;
  object-position: center;
  background: rgba(8, 14, 28, 0.9);
  padding: 0.35rem;
}

.course-card .content {
  padding: 0.95rem;
}

.benefits {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.benefits li {
  border: 1px solid var(--stroke);
  background: rgba(17, 27, 47, 0.66);
  border-radius: 12px;
  padding: 0.8rem 0.9rem;
}

.faq-list {
  display: grid;
  gap: 0.75rem;
}

details {
  border: 1px solid var(--stroke);
  border-radius: 12px;
  background: rgba(17, 27, 47, 0.66);
  padding: 0.8rem 0.95rem;
}

summary {
  cursor: pointer;
  font-weight: 600;
}

details p {
  color: var(--muted);
  margin: 0.6rem 0 0;
}

.cta-section {
  text-align: center;
}

.cta-section p {
  color: var(--muted);
}

.timeline {
  display: grid;
  gap: 0.7rem;
  margin-top: 1rem;
}

.timeline-item {
  border: 1px solid var(--stroke);
  border-radius: 12px;
  background: rgba(17, 27, 47, 0.66);
  padding: 0.7rem 0.85rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 1rem;
}

form {
  display: grid;
  gap: 0.65rem;
}

label {
  font-weight: 600;
}

input,
textarea {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--stroke);
  background: rgba(13, 21, 39, 0.85);
  color: var(--text);
  padding: 0.62rem 0.75rem;
}

textarea {
  min-height: 120px;
}

.site-footer {
  margin-top: 2rem;
  border-top: 1px solid rgba(133, 167, 255, 0.2);
  background: rgba(7, 10, 18, 0.82);
}

.footer-grid {
  padding: 2.2rem 0;
  display: grid;
  grid-template-columns: 1.2fr repeat(3, 1fr);
  gap: 1.1rem;
}

.footer-grid h3 {
  font-size: 1rem;
}

.footer-grid p,
.footer-grid a {
  color: var(--muted);
  margin: 0 0 0.45rem;
}

.footer-grid .brand {
  color: var(--text);
  margin-bottom: 0.65rem;
}

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

  .cards,
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .mobile-nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: absolute;
    top: 64px;
    left: 4vw;
    right: 4vw;
    border: 1px solid var(--stroke);
    border-radius: 12px;
    background: rgba(7, 12, 21, 0.96);
    display: none;
    flex-direction: column;
    align-items: flex-start;
    padding: 0.8rem;
    gap: 0.7rem;
  }

  .main-nav.is-open {
    display: flex;
  }

  .cards,
  .footer-grid {
    grid-template-columns: 1fr;
  }
}