/* GEOLiNK · /motherboards/ — shelf index
   Unique prefix: pg-mb- . No global class selectors in this file. */

/* ---- Hero: data-led shelf index ---- */
.pg-mb-hero {
  padding-block: clamp(40px, 5.5vw, 76px) clamp(34px, 4.5vw, 60px);
}
.pg-mb-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.pg-mb-hero-copy {
  max-width: 660px;
}
.pg-mb-hero-title {
  max-width: 15ch;
  text-align: left;
}
.pg-mb-hero-lead {
  margin-top: var(--space-4);
}
.pg-mb-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: var(--space-7);
  border-block: 1px solid var(--line);
  background: var(--line);
}
.pg-mb-stat {
  display: grid;
  gap: 3px;
  padding: 14px 12px 13px;
  background: var(--color-lab-white);
}
.pg-mb-stat:first-child {
  padding-left: 0;
  background: var(--color-lab-white);
}
.pg-mb-stat-value {
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: clamp(25px, 3vw, 38px);
  font-weight: 300;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.pg-mb-stat-label {
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  line-height: 1.4;
  text-transform: uppercase;
}
.pg-mb-hero-actions {
  justify-content: flex-start;
  margin-top: var(--space-6);
}
.pg-mb-hero-media {
  min-width: 0;
}
.pg-mb-hero-frame {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1 / 1;
  padding: clamp(22px, 4vw, 48px);
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    radial-gradient(70% 70% at 50% 46%, rgba(255, 255, 255, 0.96), transparent 70%),
    var(--gradient-ice);
  box-shadow: var(--shadow-raised);
}
.pg-mb-hero-frame::before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(255, 255, 255, 0.82);
  pointer-events: none;
}
.pg-mb-hero-frame::after {
  content: "";
  position: absolute;
  width: 76%;
  aspect-ratio: 1 / 1;
  border: 1px solid rgba(66, 126, 198, 0.28);
  border-radius: 50%;
  pointer-events: none;
}
.pg-mb-hero-frame img {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 20px 24px rgba(43, 52, 56, 0.18));
}
.pg-mb-measure {
  position: absolute;
  z-index: 3;
  padding: 3px 7px;
  border: 1px solid var(--line);
  background: rgba(247, 249, 250, 0.88);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.05em;
  line-height: 1.4;
  white-space: nowrap;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}
.pg-mb-measure--x {
  bottom: 9%;
  left: 50%;
  transform: translateX(-50%);
}
.pg-mb-measure--y {
  top: 50%;
  right: 4%;
  transform: translateY(-50%);
}
.pg-mb-frame-label {
  position: absolute;
  z-index: 3;
  bottom: 4%;
  left: 6%;
  color: var(--accent-ink);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---- Comparison matrix ---- */
.pg-mb-compare {
  background: var(--color-lab-white);
}
.pg-mb-head {
  margin-bottom: var(--space-6);
}
.pg-mb-matrix-wrap {
  overflow-x: auto;
}
.pg-mb-matrix {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: 13px;
}
.pg-mb-matrix caption {
  caption-side: top;
  padding-bottom: var(--space-3);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  text-align: left;
  text-transform: uppercase;
}
.pg-mb-matrix th {
  padding: 9px 16px 9px 0;
  border-bottom: 1px solid var(--line-strong);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-align: left;
  text-transform: uppercase;
  white-space: nowrap;
}
.pg-mb-matrix td {
  padding: 17px 16px 17px 0;
  border-bottom: 1px solid var(--line-soft);
  color: var(--text-secondary);
  line-height: 1.45;
  vertical-align: top;
}
.pg-mb-matrix tbody tr {
  transition: background-color var(--dur-fast) var(--ease-standard);
}
.pg-mb-matrix tbody tr:hover {
  background: rgba(66, 126, 198, 0.045);
}
.pg-mb-env {
  min-width: 190px;
}
.pg-mb-env strong {
  color: var(--ink);
  font-weight: 500;
}
.pg-mb-env-dim {
  display: block;
  margin-top: 3px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}
.pg-mb-glyph {
  display: inline-block;
  height: 14px;
  margin-right: 9px;
  border: 1px solid var(--accent-strong);
  background: rgba(66, 126, 198, 0.1);
  vertical-align: -2px;
}
.pg-mb-glyph--25 {
  width: 19.44px;
}
.pg-mb-glyph--35 {
  width: 20.04px;
}
.pg-mb-glyph--35w {
  width: 18.55px;
}
.pg-mb-glyph--itx,
.pg-mb-glyph--nano,
.pg-mb-glyph--nuc {
  width: 14px;
}
.pg-mb-count {
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 300;
  font-variant-numeric: tabular-nums;
}
.pg-mb-matrix-note {
  margin-top: var(--space-3);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.02em;
}

/* ---- Six form-factor cards ---- */
.pg-mb-ff-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}
.pg-mb-ffcard {
  border-radius: 0;
}
.pg-mb-ffcard-media {
  display: grid;
  place-items: center;
  aspect-ratio: 1 / 1;
  padding: clamp(16px, 2.6vw, 30px);
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(70% 70% at 50% 45%, rgba(255, 255, 255, 0.96), transparent 70%),
    var(--gradient-ice);
}
.pg-mb-ffcard-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 12px 16px rgba(43, 52, 56, 0.14));
  transition: transform var(--dur-slow) var(--ease-out);
}
.pg-mb-ffcard:hover .pg-mb-ffcard-media img {
  transform: scale(1.018);
}
.pg-mb-ffcard-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-5);
}
.pg-mb-ffcard-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}
.pg-mb-ffcard-index {
  color: var(--accent-ink);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
}
.pg-mb-ffcard-body h3 {
  margin: var(--space-1) 0 0;
  font-size: 20px;
}
.pg-mb-ffcard-dim {
  color: var(--text-secondary);
  font-size: 12px;
}
.pg-mb-ffcard-body p {
  font-size: 13px;
  line-height: 1.55;
}
.pg-mb-ffcard-link {
  align-self: flex-start;
  margin-top: var(--space-3);
  border-bottom: 1px solid currentColor;
  color: var(--accent-ink);
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---- 28-model index ---- */
.pg-mb-index-section {
  background: linear-gradient(180deg, var(--color-lab-white) 0%, var(--color-ice-deep) 100%);
}
.pg-mb-index-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.55);
  box-shadow: var(--shadow-raised);
}
.pg-mb-index {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: 12px;
}
.pg-mb-index caption {
  caption-side: top;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  text-align: left;
  text-transform: uppercase;
}
.pg-mb-index thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  background: var(--color-ice-deep);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.09em;
  text-align: left;
  text-transform: uppercase;
  white-space: nowrap;
}
.pg-mb-index tbody th,
.pg-mb-index tbody td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--text-secondary);
  font-weight: 400;
  text-align: left;
  vertical-align: middle;
}
.pg-mb-index tbody th {
  position: sticky;
  left: 0;
  z-index: 1;
  background: var(--color-lab-white);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11.5px;
  white-space: nowrap;
}
.pg-mb-index tbody th a {
  color: var(--ink);
  text-decoration: none;
}
.pg-mb-index tbody th a:hover {
  color: var(--accent-ink);
}
.pg-mb-index tbody td:nth-child(2) {
  color: var(--accent-ink);
  font-family: var(--font-mono);
}
.pg-mb-index tbody tr:hover td,
.pg-mb-index tbody tr:hover th {
  background: var(--color-ice-soft);
}
.pg-mb-index-note {
  margin-top: var(--space-4);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
}

/* ---- Index group rows ---- */
.pg-mb-index tbody .pg-mb-group th {
  position: static;
  left: auto;
  padding: 20px 12px 8px;
  border-bottom: 1px solid var(--line-soft);
  background: transparent;
  color: var(--accent-ink);
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.pg-mb-index tbody .pg-mb-group:first-child th {
  padding-top: 10px;
}

/* ---- Six cuts ---- */
.pg-mb-cuts {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}
.pg-mb-cut {
  padding: 18px 16px 6px 0;
  border-right: 1px solid var(--line-soft);
}
.pg-mb-cut:last-child {
  border-right: 0;
}
.pg-mb-cut h3 {
  margin: var(--space-3) 0 var(--space-1);
  font-size: 15px;
}
.pg-mb-cut p {
  color: var(--text-secondary);
  font-size: 12px;
  line-height: 1.5;
}

/* ---- Selection method ---- */
.pg-mb-method-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}
.pg-mb-method-copy h2 {
  max-width: 18ch;
}
.pg-mb-method-copy > p {
  margin-top: var(--space-4);
  color: var(--text-secondary);
}
.pg-mb-method-list {
  margin: var(--space-6) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: pg-mb-cut;
}
.pg-mb-method-list li {
  position: relative;
  padding: 13px 0 13px 44px;
  border-top: 1px solid var(--line-soft);
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.55;
  counter-increment: pg-mb-cut;
}
.pg-mb-method-list li::before {
  content: counter(pg-mb-cut, decimal-leading-zero);
  position: absolute;
  top: 16px;
  left: 0;
  color: var(--accent-ink);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}
.pg-mb-method-list strong {
  color: var(--ink);
  font-weight: 500;
}
.pg-mb-method-media {
  margin: 0;
}
.pg-mb-method-media img {
  display: block;
  width: 100%;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  border: 1px solid var(--line);
  filter: saturate(0.82) contrast(1.02);
}
.pg-mb-method-media figcaption {
  margin-top: var(--space-2);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.04em;
  line-height: 1.5;
}
.pg-mb-shortlist {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-6);
}
.pg-mb-short-item {
  display: grid;
  gap: 6px;
  text-decoration: none;
}
.pg-mb-short-item img {
  width: 100%;
  aspect-ratio: 1 / 1;
  padding: 6px;
  object-fit: contain;
  border: 1px solid var(--line-soft);
  background: var(--color-ice-soft);
}
.pg-mb-short-item span {
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.06em;
}
.pg-mb-short-item:hover span {
  color: var(--accent-ink);
}

/* ---- True-scale drawing ---- */
.pg-mb-scale-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
.pg-mb-scale-copy h2 {
  max-width: 16ch;
}
.pg-mb-scale-copy > p {
  margin-top: var(--space-4);
  color: var(--text-secondary);
}
.pg-mb-scale-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: var(--space-6) 0 0;
  border: 1px solid var(--line);
  background: var(--line);
}
.pg-mb-scale-list div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  padding: 10px 12px;
  background: var(--color-white);
}
.pg-mb-scale-list dt {
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.04em;
}
.pg-mb-scale-list dd {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-variant-numeric: tabular-nums;
}
.pg-mb-scale-figure {
  margin: 0;
  padding: clamp(18px, 3vw, 32px);
  border: 1px solid var(--line);
  background-color: var(--color-white);
  background-image:
    linear-gradient(to right, rgba(205, 217, 222, 0.5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(205, 217, 222, 0.5) 1px, transparent 1px);
  background-size: 5px 5px;
  box-shadow: var(--shadow-raised);
}
.pg-mb-scale-svg {
  display: block;
  margin-inline: auto;
  overflow: visible;
}
.pg-mb-scale-figure figcaption {
  margin-top: var(--space-3);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 9px;
  line-height: 1.5;
}

/* ---- Documents ---- */
.pg-mb-docs-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
.pg-mb-doc-status {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.pg-mb-doc-status caption {
  caption-side: top;
  padding-bottom: var(--space-3);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.07em;
  text-align: left;
  text-transform: uppercase;
}
.pg-mb-doc-status th,
.pg-mb-doc-status td {
  padding: 13px 12px 13px 0;
  border-top: 1px solid var(--line-soft);
  text-align: left;
  vertical-align: baseline;
}
.pg-mb-doc-status th {
  width: 30%;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.pg-mb-doc-status td {
  color: var(--text-secondary);
}
.pg-mb-doc-status td strong {
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 300;
}
.pg-mb-doc-state {
  color: var(--accent-ink);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.07em;
  text-align: right;
  text-transform: uppercase;
  white-space: nowrap;
}
.pg-mb-doc-state--req {
  color: var(--text-secondary);
}
.pg-mb-docs-note {
  margin: var(--space-5) 0;
  color: var(--text-secondary);
  font-size: 13px;
}
.pg-mb-docs-figure {
  margin: 0;
  padding: clamp(16px, 2.6vw, 28px);
  border: 1px solid var(--line);
  background: var(--gradient-ice);
}
.pg-mb-docs-figure img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
}
.pg-mb-docs-figure figcaption {
  margin-top: var(--space-2);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 9px;
  line-height: 1.5;
}
.pg-mb-doc-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-8);
}
.pg-mb-doc-card {
  display: grid;
  gap: 5px;
  padding: 10px;
  border: 1px solid var(--line-soft);
  background: rgba(255, 255, 255, 0.62);
  text-decoration: none;
  transition:
    border-color var(--dur-fast) var(--ease-standard),
    transform var(--dur-fast) var(--ease-standard);
}
.pg-mb-doc-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-line-strong);
}
.pg-mb-doc-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
}
.pg-mb-doc-card strong {
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 400;
  letter-spacing: 0.02em;
}

/* ---- CTA ---- */
.pg-mb-cta {
  border-top: 1px solid var(--line);
  background:
    radial-gradient(700px 320px at 20% 40%, rgba(66, 126, 198, 0.08), transparent 70%),
    var(--color-ice-deep);
}
.pg-mb-cta-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
.pg-mb-cta-copy h2 {
  max-width: 15ch;
}
.pg-mb-cta-copy > p {
  margin-top: var(--space-4);
  color: var(--text-secondary);
}
.pg-mb-cta-media {
  margin: 0;
}
.pg-mb-cta-media img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--line);
  filter: saturate(0.82) contrast(1.02);
}
.pg-mb-cta-media figcaption {
  margin-top: var(--space-2);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 9px;
}

/* ---- Responsive ---- */
@media (max-width: 980px) {
  .pg-mb-hero-grid,
  .pg-mb-method-grid,
  .pg-mb-scale-grid,
  .pg-mb-docs-grid,
  .pg-mb-cta-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .pg-mb-ff-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .pg-mb-cuts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .pg-mb-cut:nth-child(3n) {
    border-right: 0;
  }
  .pg-mb-doc-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .pg-mb-hero-media {
    max-width: 520px;
  }
}
@media (max-width: 620px) {
  .pg-mb-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .pg-mb-stat:first-child {
    padding-left: 12px;
  }
  .pg-mb-ff-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .pg-mb-cuts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .pg-mb-cut {
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }
  .pg-mb-doc-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .pg-mb-shortlist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .pg-mb-scale-list {
    grid-template-columns: minmax(0, 1fr);
  }
}
@media (prefers-reduced-motion: reduce) {
  .pg-mb-ffcard-media img,
  .pg-mb-doc-card {
    transition: none;
  }
}