.instructions-page {
  --instructions-bg: #fbf7f1;
  --instructions-surface: #fffaf4;
  --instructions-text: #4b3025;
  --instructions-muted: #806f64;
  --instructions-line: rgba(91, 61, 47, 0.18);
  --instructions-accent: #704b3c;
  margin: 0;
  background: var(--instructions-bg);
  color: var(--instructions-text);
}

.instructions-page main {
  overflow: hidden;
}

.instructions-hero {
  padding: clamp(150px, 15vw, 220px) 0 clamp(76px, 9vw, 132px);
  border-bottom: 1px solid var(--instructions-line);
  background:
    radial-gradient(circle at 78% 20%, rgba(203, 173, 143, 0.25), transparent 27%),
    linear-gradient(135deg, #fffaf4 0%, #f6eee4 100%);
}

.instructions-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: clamp(40px, 9vw, 140px);
  align-items: end;
}

.instructions-hero h1 {
  max-width: 920px;
  margin: 0;
  font-size: clamp(54px, 7.5vw, 116px);
  font-weight: 600;
  line-height: 0.88;
  letter-spacing: -0.065em;
  color: var(--instructions-text);
}

.instructions-hero p {
  max-width: 540px;
  margin: 0 0 4px;
  color: var(--instructions-muted);
  font-size: clamp(17px, 1.35vw, 21px);
  line-height: 1.72;
}

.instructions-guides,
.instructions-certificates {
  padding: clamp(78px, 9vw, 136px) 0;
}

.instructions-layout,
.certificates-layout {
  display: grid;
  grid-template-columns: minmax(250px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(48px, 9vw, 138px);
  align-items: start;
}

.instructions-section-heading {
  position: sticky;
  top: 120px;
}

.instructions-section-heading h2,
.materials-intro h2 {
  margin: 0;
  font-size: clamp(38px, 4.8vw, 72px);
  font-weight: 600;
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.instructions-accordion {
  border-top: 1px solid var(--instructions-line);
}

.instruction-item {
  border-bottom: 1px solid var(--instructions-line);
}

.instruction-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 92px;
  padding: 26px 0;
  color: var(--instructions-text);
  cursor: pointer;
  list-style: none;
  font-size: clamp(20px, 2vw, 29px);
  font-weight: 700;
  line-height: 1.25;
}

.instruction-item summary::-webkit-details-marker {
  display: none;
}

.instruction-item summary svg {
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 0.25s ease;
}

.instruction-item[open] summary svg {
  transform: rotate(180deg);
}

.instruction-content {
  padding: 0 56px 34px 0;
  color: var(--instructions-muted);
  font-size: 16px;
  line-height: 1.75;
}

.instruction-content ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding-left: 22px;
}

.instruction-content p {
  margin: 18px 0 0;
}

.instruction-content strong {
  color: var(--instructions-text);
}

.instructions-materials {
  padding: clamp(80px, 10vw, 148px) 0;
  background: var(--instructions-accent);
  color: #fffaf4;
}

.materials-intro {
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(48px, 9vw, 138px);
  align-items: start;
  margin-bottom: clamp(54px, 7vw, 96px);
}

.materials-intro p {
  max-width: 760px;
  margin: 0;
  color: rgba(255, 250, 244, 0.72);
  font-size: clamp(18px, 1.8vw, 26px);
  line-height: 1.55;
}

.materials-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid rgba(255, 250, 244, 0.22);
}

.material-item {
  padding: clamp(34px, 4vw, 58px) clamp(22px, 4vw, 58px) clamp(34px, 4vw, 58px) 0;
  border-bottom: 1px solid rgba(255, 250, 244, 0.22);
}

.material-item:nth-child(odd) {
  border-right: 1px solid rgba(255, 250, 244, 0.22);
}

.material-item:nth-child(even) {
  padding-left: clamp(22px, 4vw, 58px);
}

.material-item h3 {
  margin: 0 0 22px;
  font-size: clamp(23px, 2.1vw, 32px);
  line-height: 1.18;
}

.material-item p {
  max-width: 680px;
  margin: 0;
  color: rgba(255, 250, 244, 0.72);
  line-height: 1.75;
}

.material-item p + p {
  margin-top: 16px;
}

.certificate-list {
  border-top: 1px solid var(--instructions-line);
}

.certificate-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 78px;
  padding: 20px 4px;
  border-bottom: 1px solid var(--instructions-line);
  color: var(--instructions-text);
  font-size: clamp(16px, 1.45vw, 21px);
  font-weight: 700;
  text-decoration: none;
  transition: color 0.2s ease, padding 0.2s ease;
}

.certificate-list a:hover {
  padding-left: 10px;
  color: #9d6952;
}

.certificate-list a span:last-child {
  color: var(--instructions-muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

@media (max-width: 820px) {
  .instructions-hero-inner,
  .instructions-layout,
  .certificates-layout,
  .materials-intro {
    grid-template-columns: 1fr;
  }

  .instructions-hero-inner,
  .instructions-layout,
  .certificates-layout,
  .materials-intro {
    gap: 36px;
  }

  .instructions-section-heading {
    position: static;
  }

  .materials-grid {
    grid-template-columns: 1fr;
  }

  .material-item,
  .material-item:nth-child(even) {
    padding: 34px 0;
    border-right: 0;
  }
}

@media (max-width: 560px) {
  .instructions-hero {
    padding-top: 126px;
  }

  .instructions-hero h1 {
    font-size: clamp(45px, 14vw, 64px);
  }

  .instruction-item summary {
    min-height: 78px;
    padding: 22px 0;
    font-size: 19px;
  }

  .instruction-item summary svg {
    width: 24px;
    height: 24px;
  }

  .instruction-content {
    padding-right: 0;
    font-size: 15px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .instruction-item summary svg,
  .certificate-list a {
    transition: none;
  }
}