:root {
  --page-bg: #fcfcf9;
  --surface: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #d4af37;
  --accent-soft: #fff3d5;
  --border: rgba(0, 0, 0, 0.06);
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--page-bg);
  color: var(--text);
  line-height: 1.6;
}

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

.container {
  width: min(100% - 2rem, 1200px);
  margin: 0 auto;
}

.course-hero {
  min-height: 64vh;
  padding: 100px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at 95% 10%, rgba(212, 175, 55, 0.2), transparent 32%),
              linear-gradient(180deg, #0f1526 0%, #111623 100%);
}

.course-hero::before,
.course-hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.course-hero::before {
  width: 420px;
  height: 420px;
  top: -100px;
  right: -90px;
  background: rgba(212, 175, 55, 0.18);
  filter: blur(120px);
}

.course-hero::after {
  width: 240px;
  height: 240px;
  bottom: -60px;
  left: -40px;
  background: rgba(255, 255, 255, 0.08);
  filter: blur(55px);
}

.course-hero .container {
  position: relative;
  z-index: 1;
}

.course-hero h1 {
  color: #fff;
  font-size: clamp(2.2rem, 4.7vw, 3.7rem);
  line-height: 1.08;
  font-weight: 800;
}

.course-hero .lead {
  color: rgba(255, 255, 255, 0.88);
  font-size: 1.08rem;
  font-weight: 300;
}

.hero-copy {
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.85rem;
  margin-top: 1.75rem;
}

.hero-badge {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: #fff;
  padding: 0.75rem 1.1rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
}

.btn-warning {
  border: none;
  box-shadow: 0 10px 20px rgba(245, 158, 11, 0.2);
}

.course-hero .btn-outline-light {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.75);
}

.course-hero .btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.section-intro,
.cta-copy {
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.feature-card,
.course-info-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.feature-card:hover,
.course-info-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.feature-card {
  padding: 1.5rem;
  height: 100%;
}

.feature-card .icon-circle {
  width: 72px;
  height: 72px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #000000 0%,#5f5d5d 100%);
  color: #bbb6b6;
  border-radius: 24px;
  margin-bottom: 1rem;
  font-size: 1.4rem;
}

.course-info-card {
  padding: 1.5rem;
  height: 100%;
}

.course-info-card i {
  color: var(--accent);
}

.course-info-card p,
.course-info-card ul,
.feature-card p,
.text-muted {
  color: var(--muted);
}

.accordion-item {
  border: none;
}

.accordion-button {
  border-radius: 18px;
  background: #fff;
  color: #111;
  font-weight: 600;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.05);
}

.accordion-button.collapsed {
  background: #f8f8f8;
}

.accordion-button:not(.collapsed) {
  background: var(--accent-soft);
}

.accordion-body {
  background: #fff;
  color: #4a4a4a;
}

.course-cta {
  background: linear-gradient(135deg, #0b0d18 0%, #151b31 100%);
}

@media (max-width: 991px) {
  .course-hero {
    min-height: auto;
    padding: 80px 0;
  }
}

@media (max-width: 767px) {
  .course-hero {
    padding: 72px 0;
  }

  .hero-badges {
    gap: 0.6rem;
  }

  .hero-badge {
    width: 100%;
    justify-content: center;
  }

  .feature-card,
  .course-info-card {
    border-radius: 22px;
  }

  .btn-warning,
  .course-hero .btn-outline-light {
    width: 100%;
    margin-bottom: 0.75rem;
  }

  .btn-lg {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}

@media (max-width: 575px) {
  .container {
    width: min(100% - 1rem, 1200px);
  }

  .course-hero {
    padding: 60px 0;
  }

  .course-hero h1 {
    font-size: 2rem;
  }
}