:root {
  color: #f7f1e5;
  background: #0e0b06;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 0 0, rgba(182, 129, 31, .12), transparent 30rem),
    #0e0b06;
}

.page { max-width: 820px; margin: 0 auto; padding: 28px 20px 56px; }

.hero, .lesson, .next {
  border: 1px solid rgba(210, 164, 76, .18);
  border-radius: 16px;
  background: #15110a;
  overflow: hidden;
}

.hero { position: relative; padding: 32px; }

.brand {
  color: #d8ac4f;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .16em;
}

.eyebrow, .step {
  color: #b98428;
  font-weight: 800;
  font-size: 11px;
  letter-spacing: .15em;
}

h1, h2, p { margin: 0; }

h1 {
  max-width: 630px;
  margin-top: 28px;
  font-size: clamp(38px, 8vw, 68px);
  line-height: .98;
  letter-spacing: -.065em;
}

h1 span { color: #d8ac4f; }

.lead {
  max-width: 560px;
  margin-top: 24px;
  color: #b9afa0;
  font-size: clamp(16px, 2.6vw, 19px);
  line-height: 1.48;
}

.lesson { margin-top: 12px; padding: 24px; }

.lesson-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.duration { color: #a99f91; font-size: 14px; }

.video-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(210, 164, 76, .25);
  border-radius: 10px;
  background: #080603;
}

iframe { width: 100%; height: 100%; border: 0; }

.next {
  margin-top: 12px;
  padding: 32px;
  background: #1a140a;
}

h2 {
  max-width: 620px;
  margin-top: 16px;
  font-size: clamp(26px, 5vw, 45px);
  line-height: 1.02;
  letter-spacing: -.05em;
}

.return-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(100%, 420px);
  margin-top: 28px;
  padding: 17px 20px;
  border-radius: 9px;
  color: #161006;
  background: #d8ac4f;
  font-size: 17px;
  font-weight: 850;
  text-decoration: none;
  transition: transform .18s ease, background .18s ease;
}

.return-button:hover { background: #e6bd6c; transform: translateY(-2px); }
.return-button span { font-size: 24px; line-height: .7; }
.hint { margin-top: 12px; color: #a99f91; font-size: 13px; }

@media (max-width: 560px) {
  .page { padding: 12px 12px 36px; }
  .hero { padding: 28px 22px; border-radius: 13px; }
  .lesson { padding: 20px 16px; border-radius: 13px; }
  .next { padding: 26px 22px; border-radius: 13px; }
  .lesson-head { align-items: flex-start; flex-direction: column; gap: 7px; }
}