:root {
  --bg: #f4fbff;
  --bg-2: #eaf6ff;
  --text: #0f1f2f;
  --muted: #4c6276;
  --primary: #0088ff;
  --primary-2: #00b4d8;
  --accent: #19c37d;
  --card: #ffffff;
  --line: #c9dded;
  --shadow: 0 18px 40px rgba(6, 42, 75, 0.14);
  --radius: 14px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Manrope", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(0, 180, 216, 0.24), transparent 55%),
    radial-gradient(1000px 400px at 15% -15%, rgba(25, 195, 125, 0.18), transparent 55%),
    linear-gradient(180deg, var(--bg), #ffffff 40%, var(--bg-2) 100%);
  line-height: 1.45;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(244, 251, 255, 0.8);
  border-bottom: 1px solid rgba(201, 221, 237, 0.6);
}

.nav-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: var(--shadow);
}

.brand-text { font-size: 1rem; }
.nav-right { display: inline-flex; gap: 10px; }

.btn {
  border: 1px solid transparent;
  border-radius: 11px;
  font-family: inherit;
  font-weight: 700;
  letter-spacing: 0;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, background-color .18s ease;
}
.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  box-shadow: 0 12px 28px rgba(0, 136, 255, 0.28);
  padding: 11px 16px;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.85);
  border-color: var(--line);
  color: var(--text);
  padding: 11px 16px;
}

.btn-xl { font-size: 1rem; padding: 14px 18px; }
.btn-full { width: 100%; padding: 14px 16px; }

.hero {
  position: relative;
  min-height: 86vh;
  overflow: hidden;
}

.hero-video,
.hero-bg-layer,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-bg-layer {
  background: linear-gradient(120deg, rgba(7, 52, 88, 0.7), rgba(8, 91, 115, 0.58));
}

.hero-overlay {
  background: linear-gradient(180deg, rgba(4, 24, 38, 0.18), rgba(4, 24, 38, 0.72));
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 70px 16px 56px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 24px;
  align-items: end;
}

.eyebrow {
  margin: 0 0 10px;
  font-size: .78rem;
  text-transform: uppercase;
  font-weight: 700;
  color: #9de3ff;
}

.hero-copy h1 {
  margin: 0;
  font-family: "Sora", sans-serif;
  font-size: clamp(1.95rem, 3.6vw, 3.4rem);
  line-height: 1.08;
  color: #fff;
}

.hero-text {
  margin: 16px 0 0;
  max-width: 620px;
  color: #ddf1ff;
  font-size: clamp(1rem, 2vw, 1.17rem);
}

.hero-cta-row {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-stats {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-stats span {
  color: #d6efff;
  background: rgba(13, 56, 83, 0.55);
  border: 1px solid rgba(157, 227, 255, 0.33);
  border-radius: 999px;
  padding: 8px 12px;
  font-weight: 600;
  font-size: .88rem;
}

.price-panel {
  background: rgba(250, 254, 255, 0.96);
  border: 1px solid #b7dcf4;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}

.offer-tag {
  margin: 0;
  color: #1275d3;
  font-weight: 700;
  font-size: .84rem;
}
.offer-price {
  margin: 4px 0;
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
}
.offer-price .currency { font-size: 1.2rem; vertical-align: super; }
.offer-compare { margin: 8px 0; display: flex; align-items: center; gap: 10px; }
.old { text-decoration: line-through; color: #6a8094; }
.save {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: .8rem;
  background: #d8ffef;
  color: #056a43;
  font-weight: 700;
}
.offer-note { margin: 10px 0 16px; color: var(--muted); }

.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 62px 16px;
}

.section-head h2 {
  margin: 0;
  font-family: "Sora", sans-serif;
  font-size: clamp(1.55rem, 3vw, 2.3rem);
}

.section-trust { padding-top: 70px; }

.feature-grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
  box-shadow: 0 6px 18px rgba(14, 57, 92, 0.08);
}

.feature-card h3 { margin: 0; font-size: 1.05rem; }
.feature-card p { margin: 8px 0 0; color: var(--muted); font-size: .95rem; }

.course-grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.course-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}

.course-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 16px;
}

.module-tag { margin: 0 0 6px; color: #0d6ec3; font-weight: 700; font-size: .8rem; }
.course-top h3 { margin: 0; font-size: 1.08rem; }
.badge-locked {
  align-self: start;
  padding: 5px 9px;
  border-radius: 999px;
  background: #eef6ff;
  color: #2c5c86;
  border: 1px solid #c8ddf2;
  font-size: .75rem;
  font-weight: 700;
}

.video-container {
  position: relative;
  background: #08141f;
  aspect-ratio: 16 / 9;
}

.video-container video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 20, 31, 0.2), rgba(8, 20, 31, 0.8));
  display: grid;
  place-items: center;
  text-align: center;
  padding: 18px;
}

.overlay-content h4 { margin: 0; color: #fff; }
.overlay-content p { margin: 8px 0 14px; color: #d8ecff; }

.unlock-btn { padding: 10px 14px; }

.watermark {
  position: absolute;
  left: 8px;
  bottom: 8px;
  background: rgba(7, 19, 30, 0.72);
  color: #d8ebff;
  border-radius: 8px;
  font-size: .72rem;
  padding: 5px 7px;
}

.course-desc {
  margin: 0;
  padding: 14px 16px 18px;
  color: var(--muted);
}

.section-cta { padding-top: 8px; }

.cta-shell {
  background: linear-gradient(135deg, #e6f6ff, #f1fffb);
  border: 1px solid #bfe2f2;
  border-radius: 14px;
  padding: 22px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
}

.cta-shell h2 { margin: 0; font-family: "Sora", sans-serif; }
.cta-text { margin: 10px 0 0; color: var(--muted); }
.cta-actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: flex-end; }

.popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(3, 22, 37, 0.62);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 80;
}

.popup-overlay.active { display: flex; }

.popup {
  width: min(100%, 420px);
  background: #fff;
  border-radius: 12px;
  border: 1px solid var(--line);
  padding: 18px;
  position: relative;
}

.popup-close {
  position: absolute;
  right: 10px;
  top: 10px;
  border: 0;
  background: transparent;
  font-size: 1.1rem;
  cursor: pointer;
}

.popup-header h3 { margin: 0; }
.popup-header p { margin: 8px 0 0; color: var(--muted); }
.popup-form { margin-top: 14px; }
.popup-form label { display: block; margin-bottom: 8px; font-weight: 600; }
.popup-form input {
  width: 100%;
  border: 1px solid #bdd6e8;
  border-radius: 10px;
  padding: 11px 12px;
  font: inherit;
}

.popup-btn {
  margin-top: 12px;
  width: 100%;
  border: 0;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  font: inherit;
  font-weight: 700;
  padding: 12px;
  cursor: pointer;
}

.error-msg,
.success-msg {
  margin-top: 10px;
  display: none;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: .9rem;
}
.error-msg.show { display: block; background: #ffe6e6; color: #8d1f1f; }
.success-msg.show { display: block; background: #e8fff1; color: #13683f; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%) translateY(14px);
  opacity: 0;
  background: #0f2538;
  color: #d9eeff;
  border: 1px solid #2e5d82;
  border-radius: 10px;
  padding: 10px 12px;
  z-index: 99;
  transition: transform .25s ease, opacity .25s ease;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { background: #3f1111; border-color: #8d2a2a; color: #ffdede; }

.site-footer {
  border-top: 1px solid #cde1ef;
  background: #f4fbff;
  padding: 32px 16px 20px;
}

.footer-main,
.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.brand-footer { margin-bottom: 8px; }
.footer-note { margin: 0; color: var(--muted); max-width: 500px; }
.footer-links { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.footer-links a { color: #235b89; text-decoration: none; font-weight: 600; }
.footer-links a:hover { text-decoration: underline; }
.footer-bottom {
  margin-top: 20px;
  border-top: 1px solid #d8e8f3;
  padding-top: 14px;
  color: #557187;
  font-size: .92rem;
}

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: #fff;
  animation: spin .9s linear infinite;
  vertical-align: text-bottom;
}

@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; align-items: start; }
  .price-panel { max-width: 400px; }
  .feature-grid,
  .course-grid { grid-template-columns: 1fr 1fr; }
  .cta-shell { grid-template-columns: 1fr; }
  .cta-actions { justify-content: flex-start; }
}

@media (max-width: 700px) {
  .brand-text { display: none; }
  .nav-wrap { padding: 10px 12px; }
  .btn { font-size: .86rem; padding: 10px 12px; }
  .hero { min-height: 78vh; }
  .hero-inner { padding: 58px 12px 34px; }
  .hero-copy h1 { font-size: clamp(1.75rem, 9vw, 2.35rem); }
  .hero-text { font-size: .97rem; }
  .hero-cta-row,
  .cta-actions { flex-direction: column; }
  .hero-cta-row .btn,
  .cta-actions .btn { width: 100%; }
  .feature-grid,
  .course-grid { grid-template-columns: 1fr; }
  .section { padding: 52px 12px; }
}