/* AI 따라하기 Lab product page — scoped on .lab-page */

.lab-page {
  background: var(--navy-darker);
  padding-top: var(--header-h);
}

.lab-page .site-header {
  position: fixed;
  background: rgba(6, 21, 45, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.lab-page .header-inner {
  justify-content: space-between;
}

.lab-page .logo--sr {
  position: static;
  width: auto;
  height: auto;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
  font-weight: 700;
  font-size: 1.05rem;
}

.lab-back {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: clamp(1.5rem, 4vw, 2rem);
  transition: color 0.2s;
}

.lab-back:hover,
.lab-back:focus-visible {
  color: var(--accent);
}

.lab-hero {
  padding-block: clamp(2rem, 6vw, 3rem) clamp(3.5rem, 10vw, 5rem);
}

.lab-hero-grid {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.lab-eyebrow {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1rem;
}

.lab-hero h1 {
  font-size: clamp(1.875rem, 6.5vw, 2.625rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0 0 1.25rem;
}

.lab-lead {
  font-size: clamp(1.375rem, 4.5vw, 1.75rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.02em;
  margin: 0 0 1.25rem;
  color: var(--text);
}

.lab-sub {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin: 0 0 1.75rem;
  max-width: 36rem;
}

.lab-hero-visual {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 16 / 9;
  background: var(--navy-card);
}

.lab-hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@media (min-width: 900px) {
  .lab-hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: clamp(2rem, 5vw, 3.5rem);
  }

  .lab-hero-visual {
    order: 2;
  }

  .lab-hero-copy {
    order: 1;
  }
}

.lab-section {
  padding-block: clamp(3.5rem, 10vw, 5.5rem);
}

.lab-section--alt {
  background: var(--navy-deep);
}

.lab-section-head {
  max-width: 36rem;
  margin-bottom: clamp(1.75rem, 5vw, 2.5rem);
}

.lab-section-head .section-label {
  margin-bottom: 0.65rem;
}

.lab-section-head .section-title {
  margin-bottom: 0;
}

.lab-prose {
  max-width: 36rem;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--text-muted);
}

.lab-prose p {
  margin: 0 0 1.15rem;
}

.lab-prose p:last-child {
  margin-bottom: 0;
}

.lab-emphasis {
  margin-top: 2rem;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--accent);
}

.lab-days {
  display: grid;
  gap: 0.875rem;
}

@media (min-width: 560px) {
  .lab-days {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .lab-days {
    grid-template-columns: repeat(4, 1fr);
  }
}

.lab-day {
  background: var(--navy-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem 1.15rem;
}

.lab-day-link {
  display: block;
  color: inherit;
  transition: border-color 0.2s, transform 0.2s var(--ease);
}

.lab-day-link:hover {
  border-color: rgba(255, 255, 255, 0.14);
  transform: translateY(-1px);
}

.lab-day-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.lab-section-preview {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin: -0.25rem 0 0.75rem;
}

.lab-day-num {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin: 0 0 0.5rem;
}

.lab-day p {
  font-size: 0.875rem;
  line-height: 1.45;
  font-weight: 600;
  color: var(--text);
  margin: 0;
}

.lab-section-more {
  margin-top: 1.75rem;
}

.lab-examples {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 36rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.lab-examples li {
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-muted);
}

.lab-examples strong {
  font-weight: 600;
  color: var(--text);
}

.lab-audience {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 40rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.lab-audience li {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.lab-audience li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}

.lab-status-block {
  max-width: 36rem;
}

.lab-status-block .lab-eyebrow {
  margin-bottom: 0.75rem;
}

.lab-status-block .section-title {
  font-size: clamp(1.375rem, 4vw, 1.75rem);
  margin-bottom: 1.25rem;
}

.lab-status-block .btn-text {
  margin-top: 1.25rem;
}

.lab-bottom-cta {
  padding-block: clamp(4rem, 12vw, 6rem);
  text-align: center;
  border-top: 1px solid var(--border);
}

.lab-bottom-cta h2 {
  font-size: clamp(1.375rem, 4.5vw, 1.875rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.02em;
  max-width: 20rem;
  margin: 0 auto 1.5rem;
}

.lab-bottom-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.lab-bottom-actions .lab-back {
  margin-bottom: 0;
}