:root {
  --knowledge-ink: #172126;
  --knowledge-muted: #54636a;
  --knowledge-line: #dce5e8;
  --knowledge-soft: #f3f7f8;
  --knowledge-accent: #0f7a86;
  --knowledge-accent-dark: #09545d;
}

.knowledge-page {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.5rem 0 4rem;
  color: var(--knowledge-ink);
  font-family: Inter, Arial, sans-serif;
}

.knowledge-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
  margin-bottom: 1.5rem;
  color: var(--knowledge-muted);
  font-size: 0.88rem;
}

.knowledge-breadcrumb a {
  color: var(--knowledge-accent-dark);
}

.knowledge-hero {
  padding: clamp(1.6rem, 4vw, 3.2rem);
  border: 1px solid var(--knowledge-line);
  border-radius: 22px;
  background: linear-gradient(135deg, #fff 0%, var(--knowledge-soft) 100%);
}

.knowledge-eyebrow {
  margin: 0 0 0.65rem;
  color: var(--knowledge-accent-dark);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.knowledge-hero h1 {
  max-width: 860px;
  margin: 0;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.05;
}

.knowledge-intro {
  max-width: 820px;
  margin: 1.3rem 0 0;
  color: var(--knowledge-muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 1.65;
}

.knowledge-use-case {
  max-width: 820px;
  margin: 1rem 0 0;
  line-height: 1.6;
}

.knowledge-main-benefit {
  max-width: 820px;
  margin: 1rem 0 0;
  padding-left: 1rem;
  border-left: 4px solid var(--knowledge-accent);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.6;
}

.knowledge-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.knowledge-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.7rem 1rem;
  border: 1px solid var(--knowledge-accent);
  border-radius: 999px;
  color: var(--knowledge-accent-dark);
  font-weight: 700;
  text-decoration: none;
}

.knowledge-button-primary {
  background: var(--knowledge-accent);
  color: #fff;
}

.prototype-notice {
  display: grid;
  gap: 0.3rem;
  margin: 1rem 0 2rem;
  padding: 1rem 1.2rem;
  border-left: 4px solid var(--knowledge-accent);
  background: #eef9fa;
  color: #26474c;
}

.commerce-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  gap: clamp(1rem, 3vw, 2rem);
  align-items: start;
  margin: 2rem 0;
}

.commerce-gallery,
.commerce-purchase {
  min-width: 0;
  border: 1px solid var(--knowledge-line);
  border-radius: 18px;
  background: #fff;
}

.commerce-gallery {
  padding: 1rem;
}

.commerce-main-frame {
  display: grid;
  place-items: center;
  min-height: 420px;
  overflow: hidden;
  border-radius: 14px;
  background: var(--knowledge-soft);
}

.commerce-main-media {
  display: block;
  width: 100%;
  max-height: 620px;
  object-fit: contain;
}

.commerce-thumbnails {
  display: flex;
  gap: 0.6rem;
  margin-top: 0.8rem;
  padding-bottom: 0.25rem;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
}

.commerce-thumb {
  position: relative;
  flex: 0 0 74px;
  width: 74px;
  height: 74px;
  padding: 3px;
  overflow: hidden;
  border: 2px solid transparent;
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
}

.commerce-thumb:hover,
.commerce-thumb:focus-visible,
.commerce-thumb.is-active {
  border-color: var(--knowledge-accent);
}

.commerce-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 6px;
}

.commerce-thumb span {
  position: absolute;
  inset: auto 3px 3px;
  padding: 0.15rem;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.72);
  color: #fff;
  font-size: 0.66rem;
  text-align: center;
}

.commerce-purchase {
  position: sticky;
  top: 1rem;
  padding: clamp(1.2rem, 3vw, 1.8rem);
}

.commerce-purchase h2 {
  margin: 0 0 1rem;
  font-size: 1.35rem;
}

.commerce-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  min-height: 1.4rem;
}

.commerce-badge {
  display: inline-block;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  background: #e9f1f3;
  color: #294b51;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.commerce-badge-offer {
  background: #fee2e2;
  color: #9f1239;
}

.commerce-price {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-items: baseline;
  margin: 1rem 0 0.4rem;
  font-size: 1.85rem;
}

.commerce-price-old {
  color: #7b898e;
  font-size: 1rem;
  text-decoration: line-through;
}

.commerce-stock {
  margin: 0 0 1.2rem;
  color: #17603a;
  font-weight: 700;
}

.commerce-stock.is-out {
  color: #b42318;
}

.commerce-field {
  display: grid;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.commerce-field label {
  font-weight: 700;
}

.commerce-field select,
.commerce-field input {
  width: 100%;
  min-height: 44px;
  padding: 0.65rem 0.75rem;
  border: 1px solid #b8c6ca;
  border-radius: 9px;
  background: #fff;
  color: var(--knowledge-ink);
  font: inherit;
  box-sizing: border-box;
}

.commerce-quantity {
  display: grid;
  grid-template-columns: 44px minmax(70px, 1fr) 44px;
  gap: 0.4rem;
}

.commerce-quantity button {
  min-width: 44px;
  min-height: 44px;
  border: 1px solid #b8c6ca;
  border-radius: 9px;
  background: var(--knowledge-soft);
  color: var(--knowledge-ink);
  font-size: 1.25rem;
  cursor: pointer;
}

.commerce-quantity input {
  text-align: center;
}

.commerce-add-button {
  width: 100%;
  min-height: 48px;
  border: 0;
  border-radius: 999px;
  background: var(--knowledge-accent);
  color: #fff;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.commerce-add-button:hover,
.commerce-add-button:focus-visible {
  background: var(--knowledge-accent-dark);
}

.commerce-add-button:disabled,
.commerce-quantity button:disabled,
.commerce-field input:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.commerce-cart-status {
  min-height: 1.4rem;
  margin: 0.75rem 0 0;
  color: #17603a;
  font-weight: 700;
}

.commerce-cart-status.is-error {
  color: #b42318;
}

.commerce-flow-note {
  margin: 0.8rem 0 0;
  color: var(--knowledge-muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.knowledge-section {
  padding: 2rem 0;
  border-bottom: 1px solid var(--knowledge-line);
}

.knowledge-section h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
}

.knowledge-section-lead {
  max-width: 820px;
  margin: -0.25rem 0 1.25rem;
  color: var(--knowledge-muted);
  font-size: 1.02rem;
  line-height: 1.65;
}

.knowledge-choice {
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid #cfe3e6;
  border-radius: 18px;
  background: linear-gradient(145deg, #f5fbfc 0%, #fff 72%);
}

.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.knowledge-grid-compact {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.knowledge-grid-included {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.knowledge-grid-trust {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.knowledge-choice .knowledge-card,
.knowledge-trust .knowledge-card {
  position: relative;
  padding-top: 1.65rem;
}

.knowledge-choice .knowledge-card::before,
.knowledge-trust .knowledge-card::before {
  position: absolute;
  top: 0.8rem;
  left: 1.25rem;
  width: 2rem;
  height: 3px;
  border-radius: 99px;
  background: var(--knowledge-accent);
  content: "";
}

.knowledge-audience-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.knowledge-audience-list li {
  padding: 0.65rem 0.95rem;
  border: 1px solid #c8dcdf;
  border-radius: 999px;
  background: #fff;
  color: var(--knowledge-accent-dark);
  font-weight: 700;
}

.knowledge-trust {
  border-bottom: 0;
}

.knowledge-card {
  padding: 1.25rem;
  border: 1px solid var(--knowledge-line);
  border-radius: 14px;
  background: #fff;
}

.knowledge-card h3 {
  margin: 0 0 0.65rem;
  font-size: 1.08rem;
}

.knowledge-card p {
  margin: 0;
  color: var(--knowledge-muted);
  line-height: 1.55;
}

.knowledge-card a {
  color: var(--knowledge-accent-dark);
}

.related-card img {
  width: 100%;
  height: 180px;
  margin-bottom: 1rem;
  border-radius: 10px;
  background: var(--knowledge-soft);
  object-fit: contain;
}

.related-price {
  display: block;
  margin-top: 0.7rem;
  color: var(--knowledge-ink);
  font-size: 1.1rem;
}

.knowledge-contact {
  padding: clamp(1.4rem, 4vw, 2.4rem);
  border: 0;
  border-radius: 18px;
  background: var(--knowledge-soft);
}

.knowledge-contact p {
  max-width: 760px;
  color: var(--knowledge-muted);
  line-height: 1.6;
}

.debug-audit {
  margin-top: 2rem;
  padding: 1.5rem;
  border: 2px dashed #945f0b;
  border-radius: 14px;
  background: #fff9eb;
}

.debug-kicker {
  margin: 0 0 0.4rem;
  color: #764b08;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.debug-audit h2,
.debug-audit h3 {
  margin-top: 1.2rem;
}

.debug-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.debug-summary div {
  padding: 0.8rem;
  border-radius: 8px;
  background: #fff;
}

.debug-summary dt {
  color: var(--knowledge-muted);
  font-size: 0.78rem;
}

.debug-summary dd {
  margin: 0.25rem 0 0;
  font-weight: 800;
}

.knowledge-table-wrap {
  overflow-x: auto;
}

.knowledge-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}

.knowledge-table th,
.knowledge-table td {
  padding: 0.85rem;
  border: 1px solid var(--knowledge-line);
  text-align: left;
  vertical-align: top;
}

.knowledge-table thead th {
  background: var(--knowledge-soft);
}

.knowledge-status {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: #edf1f2;
  color: #44545a;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.72rem;
}

.knowledge-limitations ul {
  display: grid;
  gap: 0.7rem;
  padding-left: 1.3rem;
}

.knowledge-faq {
  margin-bottom: 0.75rem;
  padding: 1rem;
  border: 1px solid var(--knowledge-line);
  border-radius: 12px;
}

.knowledge-faq summary {
  cursor: pointer;
  font-weight: 700;
}

.knowledge-faq p {
  margin: 0.8rem 0 0;
  color: var(--knowledge-muted);
  line-height: 1.6;
}

@media (max-width: 1000px) and (min-width: 721px) {
  .knowledge-grid-compact,
  .knowledge-grid-included,
  .knowledge-grid-trust {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .knowledge-page {
    width: min(100% - 1rem, 1120px);
    padding-top: 1rem;
  }

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

  .knowledge-choice {
    padding: 1.25rem;
  }

  .knowledge-audience-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .knowledge-audience-list li {
    display: grid;
    place-items: center;
    min-height: 44px;
    padding: 0.5rem;
    border-radius: 12px;
    text-align: center;
  }

  .commerce-layout {
    grid-template-columns: 1fr;
  }

  .commerce-main-frame {
    min-height: 280px;
  }

  .commerce-purchase {
    position: static;
  }

  .knowledge-hero {
    border-radius: 16px;
  }

  .knowledge-actions,
  .knowledge-button {
    width: 100%;
  }

  .debug-summary {
    grid-template-columns: 1fr;
  }
}