.hero {
  align-items: center;
  display: grid;
  gap: clamp(2.5rem, 7vw, 7rem);
  grid-template-columns: 1.1fr 0.9fr;
  min-height: 590px;
  padding: 4.5rem 0;
}
.hero h1 {
  margin-bottom: 1.35rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}
.hero-preview {
  background: var(--navy);
  border: 8px solid #e6eef7;
  border-radius: 18px;
  box-shadow: 0 24px 55px rgba(16, 42, 67, 0.2);
  color: #d9e8f7;
  overflow: hidden;
  transform: rotate(2deg);
}
.preview-top {
  align-items: center;
  background: #0e315c;
  color: #a8c7ea;
  display: flex;
  font:
    0.73rem ui-monospace,
    monospace;
  justify-content: space-between;
  padding: 0.75rem 1rem;
}
.dot-set {
  display: flex;
  gap: 0.35rem;
}
.dot-set i {
  background: #7595b9;
  border-radius: 50%;
  height: 7px;
  width: 7px;
}
.preview-code {
  display: grid;
  font:
    0.81rem/2.1 ui-monospace,
    monospace;
  padding: 1.6rem 1.45rem 1.1rem;
}
.preview-code b {
  color: #83d8ff;
  font-weight: 500;
}
.active-code {
  background: rgba(91, 210, 255, 0.16);
  border-left: 2px solid #5bd2ff;
  color: #fff;
  padding-left: 0.45rem;
}
.preview-bars {
  align-items: end;
  border-top: 1px solid #20466f;
  display: flex;
  gap: 0.7rem;
  height: 145px;
  justify-content: center;
  padding: 1rem 1.6rem 0;
}
.preview-bars i {
  background: #5bd2ff;
  border-radius: 4px 4px 0 0;
  height: var(--h);
  width: 13%;
}
.preview-bars i:nth-child(2) {
  background: #c5a4ff;
}
.preview-bars i:nth-child(3) {
  background: #ffd45d;
}
.preview-bars i:nth-child(4) {
  background: #ff8d82;
}
.preview-bars i:nth-child(5) {
  background: #5ce19b;
}
.trust-strip {
  border-block: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding: 1.45rem 0;
}
.trust-strip div {
  border-right: 1px solid var(--line);
  display: grid;
  gap: 0.2rem;
  padding-left: 1.5rem;
}
.trust-strip div:first-child {
  padding-left: 0;
}
.trust-strip div:last-child {
  border: 0;
}
.trust-strip strong {
  font-size: 0.95rem;
}
.trust-strip span {
  color: var(--muted);
  font-size: 0.84rem;
}
.lessons {
  padding: 7rem 0;
}
.section-head {
  align-items: end;
  display: flex;
  justify-content: space-between;
  margin-bottom: 2rem;
}
.section-head h2 {
  margin-bottom: 0;
}
.section-head > p {
  color: var(--muted);
  line-height: 1.5;
  margin: 0;
  max-width: 335px;
}
.lesson-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, 1fr);
}
.lesson-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  min-height: 260px;
  padding: 1.4rem;
  text-decoration: none;
  transition:
    box-shadow 0.2s,
    transform 0.2s;
}
.lesson-card.featured {
  background: var(--navy);
  border-color: var(--navy);
  color: #fff;
}
.lesson-card.featured:hover {
  box-shadow: 0 15px 30px rgba(8, 31, 59, 0.22);
  transform: translateY(-4px);
}
.lesson-card.live-card {
  background: var(--surface);
  color: var(--ink);
}
.lesson-card.live-card:hover {
  border-color: var(--brand);
  box-shadow: 0 15px 30px rgba(16, 42, 67, 0.12);
  transform: translateY(-4px);
}
.lesson-card.live-card p {
  color: var(--muted);
}
.lesson-card.live-card .lesson-tag {
  color: var(--brand);
}
.lesson-card h3 {
  font-size: 1.5rem;
  margin: 1.5rem 0 0.55rem;
}
.lesson-card p {
  color: #a9c0da;
  line-height: 1.55;
}
.lesson-card.upcoming {
  background: var(--surface);
  color: #829ab1;
}
.lesson-card.upcoming h3 {
  color: var(--ink);
}
.lesson-tag {
  color: #72d5ff;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}
.upcoming .lesson-tag {
  color: var(--brand);
}
.lesson-link,
.upcoming > span:last-child {
  font-size: 0.85rem;
  font-weight: 800;
  margin-top: auto;
}
.lesson-link b {
  font-size: 1.1rem;
  margin-left: 0.35rem;
}
.method {
  background: var(--soft);
  border-radius: var(--radius);
  display: grid;
  gap: 3rem;
  grid-template-columns: 0.85fr 1.15fr;
  margin-bottom: 1rem;
  padding: clamp(2rem, 5vw, 4rem);
}
.method h2 {
  margin-bottom: 0;
}
.method ol {
  list-style: none;
  margin: 0;
  padding: 0;
}
.method li {
  border-bottom: 1px solid #cbd8e5;
  display: grid;
  gap: 1.2rem;
  grid-template-columns: 32px 1fr;
  padding: 1rem 0;
}
.method li:first-child {
  padding-top: 0;
}
.method li:last-child {
  border: 0;
  padding-bottom: 0;
}
.method li > b {
  color: var(--brand);
  font:
    0.78rem ui-monospace,
    monospace;
  padding-top: 0.15rem;
}
.method h3 {
  margin: 0 0 0.25rem;
}
.method li p {
  color: var(--muted);
  margin: 0;
}
@media (max-width: 800px) {
  .hero,
  .method {
    grid-template-columns: 1fr;
  }
  .hero {
    padding: 3rem 0 4rem;
  }
  .hero-preview {
    margin: 0 auto;
    max-width: 440px;
    width: 100%;
  }
  .lesson-grid {
    grid-template-columns: 1fr;
  }
  .lesson-card {
    min-height: 210px;
  }
  .section-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 1rem;
  }
  .trust-strip {
    gap: 1rem;
  }
  .trust-strip div {
    padding-left: 0.75rem;
  }
}
.@media (max-width: 500px) {
  .trust-strip {
    grid-template-columns: 1fr;
  }
  .trust-strip div,
  .trust-strip div:first-child {
    border-bottom: 1px solid var(--line);
    border-right: 0;
    padding: 0.6rem 0;
  }
  .trust-strip div:last-child {
    border: 0;
  }
}