/**
 * Material Page — MAC BLACK editorial Human Layer
 * Scope: body.page-material only
 * Visual system aligned with Homepage / Brand / Products
 */

body.page-material {
  --mat-display: clamp(2.25rem, 4.5vw, 3.25rem);
  --mat-title: clamp(1.5rem, 2.6vw, 2rem);
  --mat-emphasis: clamp(1.25rem, 2.2vw, 1.625rem);
  --mat-body: 0.9375rem;
  --mat-meta: 0.6875rem;
  --mat-metric: clamp(1.75rem, 3.5vw, 2.5rem);
  --mat-reading: 40.5rem;
  --mat-editorial: 70rem;
  --mat-immersive: 84rem;
  --mat-gutter: clamp(1.25rem, 3.5vw, 2.5rem);
  --mat-y-section: clamp(3.5rem, 7vw, 5.5rem);
  --mat-slot-bg: #e6e1d9;
  --mat-slot-ink: #2a2826;
  background: var(--color-bg);
}

body.page-material .mat-main {
  max-width: none;
  margin: 0;
  padding: 0 0 clamp(3rem, 6vw, 5rem);
}

body.page-material .mat-shell {
  width: 100%;
  max-width: calc(var(--mat-editorial) + 2 * var(--mat-gutter));
  margin-inline: auto;
  padding-inline: var(--mat-gutter);
  box-sizing: border-box;
}

body.page-material .mat-shell--immersive {
  max-width: calc(var(--mat-immersive) + 2 * var(--mat-gutter));
  margin-inline: auto;
}

body.page-material .mat-reading {
  max-width: var(--mat-reading);
}

/* —— Type —— */
body.page-material .mat-eyebrow {
  margin: 0 0 0.75rem;
  font-family: var(--font-en);
  font-size: var(--mat-meta);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  line-height: 1.4;
}

body.page-material .mat-display {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--mat-display);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: 0.03em;
}

body.page-material .mat-display-en {
  margin: 0.4rem 0 0;
  font-family: var(--font-en);
  font-size: clamp(0.875rem, 1.6vw, 1.125rem);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  word-break: break-word;
}

body.page-material .mat-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--mat-title);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: 0.03em;
}

body.page-material .mat-body {
  margin: 1rem 0 0;
  max-width: var(--mat-reading);
  font-family: var(--font-body);
  font-size: var(--mat-body);
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: 0.01em;
  color: var(--color-text);
}

body.page-material .mat-body + .mat-body {
  margin-top: 0.85rem;
}

body.page-material .mat-emphasis {
  margin: clamp(1.75rem, 3.5vw, 2.5rem) 0 0;
  max-width: 28rem;
  font-family: var(--font-display);
  font-size: var(--mat-emphasis);
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: 0.03em;
  color: var(--color-text);
}

body.page-material .mat-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.5rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

body.page-material .mat-meta-row li {
  margin: 0;
  font-family: var(--font-en);
  font-size: 0.625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-text-muted) 70%, var(--color-bg));
  line-height: 1.4;
}

body.page-material .mat-note {
  margin: 0.35rem 0 0;
  font-size: 0.75rem;
  line-height: 1.55;
  color: var(--color-text-muted);
  max-width: var(--mat-reading);
}

body.page-material .mat-layer-label {
  margin: 0 0 0.85rem;
  font-family: var(--font-en);
  font-size: 0.5625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--color-text-muted) 65%, var(--color-bg));
}

body.page-material .mat-action {
  margin: 1.75rem 0 0;
}

body.page-material .mat-action a {
  font-family: var(--font-en);
  font-size: var(--mat-meta);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.1em;
}

body.page-material .mat-action a:hover {
  color: var(--color-accent-metal);
  border-color: var(--color-accent-metal);
}

/* —— Sections —— */
body.page-material .mat-section {
  padding-block: var(--mat-y-section);
}

body.page-material .mat-section--hero {
  padding-top: clamp(1.5rem, 3vw, 2.5rem);
}

body.page-material .mat-section + .mat-section {
  border-top: 1px solid color-mix(in srgb, var(--color-border) 50%, var(--color-bg));
}

/* —— Media —— */
body.page-material .mat-media {
  margin-block: clamp(1.75rem, 3.5vw, 2.75rem);
  margin-inline: 0;
  display: block;
  background: var(--mat-slot-bg);
}

body.page-material .mat-media.mat-shell {
  margin-inline: auto;
}

body.page-material .mat-media-slot {
  display: flex;
  align-items: flex-end;
  box-sizing: border-box;
  width: 100%;
  min-height: 12rem;
  padding: clamp(0.9rem, 2vw, 1.4rem);
  border: 1px solid var(--color-border);
  background: var(--mat-slot-bg);
  overflow: hidden;
}

body.page-material .mat-media--hero .mat-media-slot,
body.page-material .mat-media--wide .mat-media-slot {
  aspect-ratio: 16 / 9;
  background: var(--mat-slot-ink);
  border-color: transparent;
  color: #efeae3;
}

body.page-material .mat-media--landscape .mat-media-slot {
  aspect-ratio: 3 / 2;
}

body.page-material .mat-media--square .mat-media-slot {
  aspect-ratio: 4 / 3;
}

body.page-material .mat-brief__row {
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  gap: 0.35rem 0.85rem;
  margin: 0 0 0.28rem;
  align-items: baseline;
}

body.page-material .mat-brief__k {
  font-family: var(--font-en);
  font-size: 0.5625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.7;
  line-height: 1.3;
}

body.page-material .mat-brief__v {
  font-family: var(--font-body);
  font-size: 0.75rem;
  line-height: 1.4;
  opacity: 0.92;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

body.page-material .mat-media--hero .mat-brief__k,
body.page-material .mat-media--hero .mat-brief__v,
body.page-material .mat-media--wide .mat-brief__k,
body.page-material .mat-media--wide .mat-brief__v {
  color: #efeae3;
}

body.page-material .mat-media:has(> img) .mat-media-slot,
body.page-material .mat-media-slot:has(> img) {
  display: none;
}

body.page-material .mat-media img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* —— Metrics —— */
body.page-material .mat-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2rem) clamp(1rem, 2vw, 1.75rem);
  margin: clamp(2rem, 4vw, 3rem) 0 0;
  padding: clamp(1.25rem, 2.5vw, 1.75rem) 0 0;
  border-top: 1px solid color-mix(in srgb, var(--color-border) 55%, var(--color-bg));
  list-style: none;
}

@media (min-width: 56rem) {
  body.page-material .mat-metrics--primary {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  body.page-material .mat-metrics--secondary {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

body.page-material .mat-metrics--secondary {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  padding-top: clamp(1.25rem, 2.5vw, 1.75rem);
  border-top: 1px solid color-mix(in srgb, var(--color-border) 40%, var(--color-bg));
}

body.page-material .mat-metric {
  margin: 0;
  min-width: 0;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

body.page-material .mat-metric__value {
  display: block;
  font-family: var(--font-en);
  font-size: var(--mat-metric);
  font-weight: 400;
  letter-spacing: 0.04em;
  line-height: 1.1;
  color: var(--color-text);
}

body.page-material .mat-metric__unit {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--font-en);
  font-size: var(--mat-meta);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

body.page-material .mat-metric__label {
  display: block;
  margin-top: 0.45rem;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--color-text-muted);
}

body.page-material .mat-evidence {
  margin: clamp(1.5rem, 3vw, 2rem) 0 0;
  max-width: 36rem;
  font-size: 0.75rem;
  line-height: 1.7;
  color: color-mix(in srgb, var(--color-text-muted) 85%, var(--color-bg));
}

body.page-material .mat-evidence p {
  margin: 0 0 0.35rem;
  max-width: none;
}

/* —— Precision —— */
body.page-material .mat-precision-grid {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  margin-top: clamp(2rem, 4vw, 3rem);
}

@media (min-width: 48rem) {
  body.page-material .mat-precision-grid {
    grid-template-columns: 1.35fr 0.85fr;
    align-items: start;
  }
}

body.page-material .mat-practice-nums {
  display: grid;
  gap: clamp(1.25rem, 2.5vw, 1.75rem);
  margin: clamp(1.75rem, 3.5vw, 2.5rem) 0 0;
  padding: 0;
  list-style: none;
  max-width: 28rem;
}

body.page-material .mat-practice-nums li {
  margin: 0;
  padding-top: 0.85rem;
  border-top: 1px solid color-mix(in srgb, var(--color-border) 50%, var(--color-bg));
}

body.page-material .mat-practice-nums .mat-metric__value {
  font-size: clamp(2rem, 4vw, 2.75rem);
}

/* —— Surface compare —— */
body.page-material .mat-surface-pair {
  display: grid;
  gap: clamp(2rem, 4vw, 3rem);
  margin-top: clamp(2rem, 4vw, 3rem);
}

@media (min-width: 48rem) {
  body.page-material .mat-surface-pair {
    grid-template-columns: 1fr 1fr;
    gap: clamp(1.5rem, 3vw, 2.5rem);
  }
}

body.page-material .mat-surface-card {
  margin: 0;
  min-width: 0;
}

body.page-material .mat-surface-card .mat-media {
  margin-top: 0;
  margin-bottom: 1rem;
}

body.page-material .mat-surface-card__en {
  margin: 0;
  font-family: var(--font-en);
  font-size: var(--mat-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

body.page-material .mat-surface-card__zh {
  margin: 0.35rem 0 0;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

body.page-material .mat-surface-card .mat-body {
  margin-top: 0.75rem;
  max-width: 22rem;
  color: var(--color-text-muted);
}

/* —— References —— */
body.page-material .mat-section--refs {
  padding-block: clamp(2rem, 4vw, 3rem);
}

body.page-material .mat-refs {
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.75rem;
  line-height: 1.7;
  color: color-mix(in srgb, var(--color-text-muted) 80%, var(--color-bg));
}

body.page-material .mat-refs a {
  color: inherit;
  text-underline-offset: 0.15em;
}

body.page-material .mat-refs a:hover {
  color: var(--color-text);
}

/* —— Footer —— */
body.page-material .mat-footer {
  max-width: none;
  margin: 0;
  padding: clamp(2rem, 4vw, 3rem) 0;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--mat-meta);
  letter-spacing: 0.06em;
}

body.page-material .mat-footer p {
  margin: 0;
  max-width: none;
}