:root {
  --bg: #07111f;
  --surface: rgba(16, 27, 46, 0.88);
  --surface-soft: rgba(22, 36, 58, 0.82);
  --text: #f4f8ff;
  --muted: #a9b8cc;
  --primary: #4da3ff;
  --primary-dark: #1d6fdc;
  --accent: #00d4a6;
  --accent-gold: #f4c542;
  --border: rgba(255, 255, 255, 0.13);
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.32);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(77, 163, 255, 0.22), transparent 34%),
    radial-gradient(circle at top right, rgba(0, 212, 166, 0.14), transparent 28%),
    linear-gradient(180deg, #07111f, #0b1424 46%, #07111f);
  line-height: 1.55;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 75%);
}

a {
  color: var(--primary);
  text-decoration: none;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(7, 17, 31, 0.78);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.10);
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.28);
}

.navbar {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--text);
  padding: 8px 10px 8px 0;
  flex-shrink: 0;
}

.brand-logo {
  width: 58px;
  height: 58px;
  object-fit: contain;
  border-radius: 12px;
}

.brand strong {
  font-size: 1.22rem;
  line-height: 1;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-left: auto;
}

.nav-links a {
  color: var(--text);
  font-weight: 700;
  font-size: 0.88rem;
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--accent);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--surface);
  font-size: 1.35rem;
  border-radius: 12px;
  padding: 8px 12px;
  box-shadow: var(--shadow);
}

.hero {
  width: min(1180px, calc(100% - 32px));
  margin: 24px auto 24px;
  display: grid;
  grid-template-columns: minmax(0, 1.42fr) minmax(280px, 0.88fr);
  gap: 30px;
  align-items: center;
}

/* .hero-content h1,
.page-hero h1 {
  font-size: clamp(2.25rem, 5.6vw, 4.6rem);
  line-height: 1.08;
  margin: 10px 0 16px;
  letter-spacing: -0.045em;
} */

.hero-content h1 {
  font-size: clamp(1.3rem, 3.5vw, 3.5rem);
  line-height: 1.15;
  margin: 10px 0 16px;
  letter-spacing: -0.035em;
}

.hero-subtitle,
.page-hero p,
.section-heading p,
.split p,
.cta p,
.contact p,
.course-card p,
.resource-card p,
.plan-card p,
.process-card p,
.faq-answer p {
  color: var(--muted);
  font-size: clamp(0.94rem, 1vw, 1.02rem);
}

.eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 900;
  font-size: 0.78rem;
  margin: 0 0 8px;
}

.hero .eyebrow {
  font-size: 0.82rem;
}

.hero-actions,
.cta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 900;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

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

.btn.primary {
  color: #06111f;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  box-shadow: 0 12px 30px rgba(0, 212, 166, 0.25);
}

.btn.primary:hover {
  color: #06111f;
  box-shadow: 0 18px 40px rgba(77, 163, 255, 0.32);
}

.btn.secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border-color: var(--border);
}

.trust-row {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.trust-row span {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 7px 11px;
  border-radius: 999px;
  font-size: 0.86rem;
}

.hero-card,
.contact-card,
.course-card,
.resource-card,
.plan-card,
.process-card,
.page-hero,
.course-detail,
.stats div,
.offer-item {
  background: linear-gradient(180deg, rgba(255,255,255,0.09), rgba(255,255,255,0.04));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero-card {
  padding: 26px;
}

.hero-card h2 {
  margin: 0 0 12px;
  font-size: clamp(1.45rem, 2.3vw, 1.85rem);
  line-height: 1.12;
}

.hero-card .check-list li {
  margin: 5px 0;
  font-size: 0.94rem;
}

.hero-card .highlight {
  margin-top: 10px;
  font-size: 0.94rem;
}

.card-kicker,
.plan-label {
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.76rem;
  font-weight: 900;
  margin-top: 0;
}

.highlight {
  color: var(--accent-gold);
  font-weight: 900;
}

.check-list {
  list-style: none;
  padding-left: 0;
  margin: 12px 0;
}

.check-list li {
  position: relative;
  padding-left: 24px;
  margin: 7px 0;
  color: var(--muted);
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 900;
}

.stats {
  width: min(1180px, calc(100% - 32px));
  margin: 28px auto 48px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

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

.stats strong {
  display: block;
  font-size: 1.55rem;
  color: var(--primary);
  line-height: 1.05;
}

.stats span {
  color: var(--muted);
  font-size: 0.94rem;
}

.section,
.page-hero,
.course-detail {
  width: min(1180px, calc(100% - 32px));
  margin: 58px auto;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 24px;
}

.section-heading h2,
.split h2,
.cta h2,
.contact h2,
.course-detail h2 {
  font-size: clamp(1.75rem, 3.4vw, 2.65rem);
  line-height: 1.1;
  margin: 6px 0 10px;
  letter-spacing: -0.03em;
}

#courses .section-heading h2,
#teaching-plans .section-heading h2,
#learning-plans h2 {
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  line-height: 1.13;
  max-width: 760px;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  align-items: stretch;
}

.course-card,
.resource-card,
.plan-card,
.process-card {
  padding: 21px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.course-card:hover,
.plan-card:hover,
.resource-card:hover,
.process-card:hover {
  transform: translateY(-6px);
  border-color: rgba(77, 163, 255, 0.55);
}

.course-card h3,
.resource-card h3,
.plan-card h3,
.process-card h3 {
  font-size: 1.22rem;
  line-height: 1.18;
  margin: 11px 0 3px;
}

.course-card a {
  margin-top: auto;
  padding-top: 14px;
  font-weight: 900;
  display: inline-flex;
  align-items: center;
  width: fit-content;
}

.plan-card .btn {
  margin-top: auto;
  align-self: flex-start;
}

.course-number {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 13px;
  background: linear-gradient(135deg, rgba(77,163,255,0.25), rgba(0,212,166,0.22));
  color: var(--accent);
  font-weight: 900;
  border: 1px solid rgba(255,255,255,0.14);
}

.grade {
  color: var(--accent);
  font-weight: 900;
  margin-top: 0;
}

.split {
  display: grid;
  grid-template-columns: 0.86fr 1.14fr;
  gap: 28px;
  align-items: center;
}

.process-grid,
.resource-grid,
.plan-grid {
  display: grid;
  gap: 16px;
}

.process-grid {
  grid-template-columns: repeat(2, 1fr);
}

.resource-grid {
  grid-template-columns: repeat(3, 1fr);
}

.plan-grid {
  grid-template-columns: repeat(4, 1fr);
}

.process-card span {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: rgba(0, 212, 166, 0.15);
  color: var(--accent);
  font-weight: 900;
}

.plan-card.popular {
  border-color: rgba(244, 197, 66, 0.55);
  box-shadow: 0 22px 70px rgba(244, 197, 66, 0.12);
}

.offer-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.offer-item {
  padding: 18px;
  font-weight: 900;
}

.cta {
  width: min(1180px, calc(100% - 32px));
  margin: 58px auto;
  background:
    radial-gradient(circle at top left, rgba(0,212,166,0.35), transparent 32%),
    linear-gradient(135deg, #0d1b2e, #123e74);
  color: white;
  border-radius: var(--radius);
  padding: 30px;
  justify-content: space-between;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.cta p,
.cta .eyebrow {
  color: rgba(255,255,255,0.82);
}

.cta .btn.primary {
  background: white;
  color: var(--primary-dark);
}

.contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.contact-card {
  padding: 24px;
}

.footer {
  text-align: center;
  color: var(--muted);
  border-top: 1px solid var(--border);
  padding: 28px 16px;
  background: rgba(0, 0, 0, 0.18);
}

.page-hero {
  padding: 40px;
}

.course-detail {
  padding: 30px;
}

.course-detail-heading {
  display: flex;
  align-items: center;
  gap: 16px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 16px;
  margin-bottom: 22px;
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
}

.detail-grid.three-col {
  grid-template-columns: repeat(3, 1fr);
}

.course-detail ul {
  padding-left: 20px;
  color: var(--muted);
}

.faq-list {
  max-width: 900px;
}

.faq-item {
  width: 100%;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  border-radius: 18px;
  padding: 16px 18px;
  margin-top: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 900;
  text-align: left;
}

.faq-item strong {
  color: var(--accent);
  font-size: 1.25rem;
}

.faq-answer {
  display: none;
  padding: 2px 18px 12px;
}

.faq-answer.open {
  display: block;
}

@media (max-width: 1120px) {
  .nav-links {
    gap: 10px;
  }

  .nav-links a {
    font-size: 0.82rem;
  }
}

@media (max-width: 1080px) {
  .course-grid,
  .plan-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .resource-grid,
  .detail-grid.three-col {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .hero,
  .split,
  .contact,
  .detail-grid,
  .detail-grid.three-col {
    grid-template-columns: 1fr;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .nav-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    top: 78px;
    left: 16px;
    right: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    background: rgba(16, 27, 46, 0.98);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 16px;
    box-shadow: var(--shadow);
  }

  .nav-links.open {
    display: flex;
  }
}

@media (max-width: 620px) {
  .course-grid,
  .stats,
  .offer-grid,
  .process-grid,
  .resource-grid,
  .plan-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    margin-top: 28px;
  }

  .section,
  .page-hero,
  .course-detail,
  .cta {
    margin: 42px auto;
  }

  .page-hero,
  .course-detail,
  .cta,
  .hero-card {
    padding: 22px;
  }

  .hero-content h1,
  .page-hero h1 {
    font-size: clamp(2rem, 11vw, 3.05rem);
  }

  .brand-logo {
    width: 52px;
    height: 52px;
  }

  .brand strong {
    font-size: 1.02rem;
  }
}