:root {
  --navy: #0d1b4a;
  --blue: #1565c0;
  --sky: #2196f3;
  --light: #64b5f6;
  --rose: #e91e63;
  --ink: #1f2d49;
  --muted: #5f6f8f;
  --bg: #f4f9ff;
  --paper: #ffffff;
  --radius: 14px;
  --shadow: 0 10px 28px rgba(13, 27, 74, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Montserrat", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 0%, rgba(100, 181, 246, 0.25), transparent 40%),
    radial-gradient(circle at 85% 20%, rgba(233, 30, 99, 0.09), transparent 35%),
    linear-gradient(180deg, #f7fbff, #eaf4ff);
  line-height: 1.6;
}

body.course-owner {
  --accent: #1565c0;
  --accent-2: #2196f3;
}

body.course-pro {
  --accent: #0d1b4a;
  --accent-2: #e91e63;
}

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

a {
  color: inherit;
}

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

.skip-link {
  position: absolute;
  left: -999px;
  top: -999px;
}

.skip-link:focus {
  left: 12px;
  top: 12px;
  background: #000;
  color: #fff;
  padding: 8px 12px;
  border-radius: 8px;
  z-index: 9999;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(13, 27, 74, 0.1);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
}

.brand {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  text-decoration: none;
  font-weight: 700;
}

.brand img {
  width: 44px;
  height: 44px;
  object-fit: cover;
  border-radius: 9px;
}

.brand span {
  color: var(--navy);
}

.header-nav {
  display: flex;
  gap: 14px;
  font-size: 0.94rem;
}

.header-nav a {
  text-decoration: none;
  color: var(--muted);
}

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

.hero {
  padding: 56px 0 30px;
}

.hero-grid {
  display: grid;
  gap: 18px;
}

.kicker {
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 1.2px;
  font-size: 0.74rem;
  color: var(--accent);
}

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 5vw, 3rem);
  line-height: 1.12;
  color: var(--navy);
}

.subhead {
  color: var(--muted);
  max-width: 70ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: var(--shadow);
}

.btn-ghost {
  border-color: rgba(13, 27, 74, 0.22);
  color: var(--navy);
  background: rgba(255, 255, 255, 0.75);
}

.btn:focus-visible {
  outline: 3px solid rgba(33, 150, 243, 0.45);
  outline-offset: 2px;
}

.notice {
  margin-top: 10px;
  color: #944d00;
  background: #fff4de;
  border: 1px solid #ffd08f;
  border-radius: 10px;
  padding: 10px 12px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.stat-card {
  background: var(--paper);
  border-radius: 12px;
  padding: 12px;
  box-shadow: var(--shadow);
}

.stat-card strong {
  display: block;
  color: var(--navy);
  font-size: 1.15rem;
}

.section {
  padding: 28px 0;
}

.section h2 {
  margin: 0 0 12px;
  color: var(--navy);
  font-size: clamp(1.35rem, 3.2vw, 2rem);
}

.card {
  background: var(--paper);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.list {
  margin: 0;
  padding-left: 18px;
}

.list li + li {
  margin-top: 8px;
}

.offer-box {
  border: 1px solid rgba(13, 27, 74, 0.12);
}

.price-line {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  border-bottom: 1px dashed rgba(13, 27, 74, 0.14);
  padding: 8px 0;
}

.price-line:last-child {
  border-bottom: 0;
}

.faq details {
  border: 1px solid rgba(13, 27, 74, 0.12);
  border-radius: 10px;
  background: #fff;
  padding: 10px 12px;
}

.faq details + details {
  margin-top: 10px;
}

.faq summary {
  font-weight: 700;
  cursor: pointer;
}

.legal {
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer {
  margin-top: 32px;
  padding: 20px 0 32px;
  border-top: 1px solid rgba(13, 27, 74, 0.1);
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (min-width: 768px) {
  .stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}