/* ARVETEHA USEFUL MATERIALS 20260716-1 */
:root {
  --materials-ink: #17212b;
  --materials-soft: #556274;
  --materials-muted: #6f7a8b;
  --materials-line: #dfe5ee;
  --materials-lavender: #f3f0ff;
  --materials-lavender-strong: #e5dfff;
  --materials-blue: #5c78dc;
  --materials-blue-dark: #405dbf;
  --materials-blue-soft: #eef3ff;
  --materials-gray-soft: #f7f9fc;
  --materials-white: #ffffff;
  --materials-success-soft: #eef9f4;
  --materials-warning-soft: #fff7ed;
  --materials-shadow: 0 16px 42px rgba(31, 46, 76, 0.08);
  --materials-container: 1160px;
  --materials-reading: 780px;
}

.materials-page {
  margin: 0;
  min-width: 320px;
  background: var(--materials-white);
  color: var(--materials-ink);
  font-family: Inter, sans-serif;
  font-size: 15px;
  line-height: 1.48;
  -webkit-font-smoothing: antialiased;
}

.materials-page *,
.materials-page *::before,
.materials-page *::after,
.kkk-materials *,
.kkk-materials *::before,
.kkk-materials *::after {
  box-sizing: border-box;
}

.materials-page .container,
.kkk-materials .container {
  width: min(var(--materials-container), calc(100% - 48px));
  margin-inline: auto;
}

.materials-progress {
  position: fixed;
  z-index: 110;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--materials-blue);
}

.materials-button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 4px;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.materials-button:hover {
  transform: translateY(-1px);
}

.materials-button--primary {
  border-color: var(--materials-blue);
  background: var(--materials-blue);
  color: #ffffff;
}

.materials-button--primary:hover {
  border-color: var(--materials-blue-dark);
  background: var(--materials-blue-dark);
}

.materials-button--secondary {
  border-color: var(--materials-line);
  background: #f5f7fb;
  color: var(--materials-ink);
}

.materials-button--secondary:hover {
  border-color: #cdd6e4;
  background: #eef2f8;
}

.material-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--materials-line);
  background:
    radial-gradient(circle at 86% 8%, rgba(229, 223, 255, 0.88), transparent 31%),
    linear-gradient(180deg, #ffffff 0%, #fafbff 100%);
}

.material-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(330px, 0.85fr);
  gap: 72px;
  align-items: center;
  padding-top: 72px;
  padding-bottom: 72px;
}

.material-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 25px;
  color: var(--materials-muted);
  font-size: 13px;
}

.material-breadcrumbs a {
  color: inherit;
  text-decoration: none;
}

.material-breadcrumbs a:hover {
  color: var(--materials-blue-dark);
  text-decoration: underline;
}

.material-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.material-meta span,
.materials-card__meta span {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 4px 9px;
  border: 1px solid #ddd8fb;
  border-radius: 3px;
  background: var(--materials-lavender);
  color: #584d9e;
  font-size: 12px;
  font-weight: 700;
}

.material-meta span:nth-child(n+2),
.materials-card__meta span:nth-child(n+2) {
  border-color: var(--materials-line);
  background: #ffffff;
  color: var(--materials-muted);
}

.material-hero h1 {
  max-width: 790px;
  margin: 0;
  color: var(--materials-ink);
  font-size: clamp(32px, 4vw, 46px);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 1.06;
}

.material-lead {
  display: grid;
  gap: 12px;
  max-width: 760px;
  margin-top: 24px;
}

.material-lead p {
  margin: 0;
  color: var(--materials-soft);
  font-size: 18px;
  line-height: 1.66;
}

.material-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}


.material-hero__image {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(111, 99, 217, 0.16);
  border-radius: 30px;
  background: #ffffff;
  box-shadow: 0 28px 72px rgba(25, 38, 72, 0.14);
}

.material-hero__image::before {
  content: "";
  position: absolute;
  inset: 16px;
  z-index: 2;
  pointer-events: none;
  border: 1px solid rgba(255, 255, 255, 0.64);
  border-radius: 22px;
}

.material-hero__image img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.material-hero__image figcaption {
  padding: 13px 18px 16px;
  color: #657089;
  font-size: 13px;
  line-height: 1.55;
  background: #ffffff;
}

.materials-card--with-image {
  overflow: hidden;
  padding: 0;
}

.materials-card__image {
  display: block;
  overflow: hidden;
  background: #f5f3ff;
  text-decoration: none;
}

.materials-card__image img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 220ms ease;
}

.materials-card:hover .materials-card__image img {
  transform: scale(1.025);
}

.materials-card__body {
  padding: 26px;
}

.kkk-materials .materials-card__body {
  padding: 22px;
}

.material-image--wide {
  max-width: none;
}
.credit-visual {
  position: relative;
  min-height: 420px;
}

.credit-visual::before {
  position: absolute;
  inset: 20px 0 0 30px;
  border: 1px solid #dcd7fb;
  border-radius: 7px;
  background: linear-gradient(145deg, var(--materials-lavender), #eef4ff);
  content: "";
}

.credit-visual__sheet {
  position: absolute;
  z-index: 2;
  top: 55px;
  left: 0;
  width: min(360px, 88%);
  padding: 28px;
  border: 1px solid var(--materials-line);
  border-radius: 5px;
  background: #ffffff;
  box-shadow: var(--materials-shadow);
  transform: rotate(-2deg);
}

.credit-visual__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 30px;
}

.credit-visual__label {
  color: #5a4fa1;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.credit-visual__top strong {
  color: var(--materials-soft);
  font-size: 13px;
}

.credit-visual__line {
  width: 78%;
  height: 9px;
  margin-bottom: 12px;
  border-radius: 2px;
  background: #edf0f5;
}

.credit-visual__line--wide { width: 100%; }
.credit-visual__line--short { width: 55%; }

.credit-visual__amount {
  margin-top: 34px;
  padding-top: 19px;
  border-top: 1px solid var(--materials-line);
  color: #c34242;
  font-size: 29px;
  font-weight: 800;
  text-align: right;
}

.credit-visual__reference {
  position: absolute;
  z-index: 3;
  right: 4px;
  bottom: 40px;
  width: 240px;
  padding: 18px;
  border: 1px solid #ccd8f5;
  border-radius: 4px;
  background: var(--materials-blue-soft);
  box-shadow: 0 12px 30px rgba(42, 67, 115, 0.1);
}

.credit-visual__reference span {
  display: block;
  margin-bottom: 5px;
  color: var(--materials-muted);
  font-size: 12px;
}

.credit-visual__reference strong {
  color: var(--materials-blue-dark);
  font-size: 15px;
}

.material-layout {
  display: grid;
  grid-template-columns: 240px minmax(0, var(--materials-reading));
  gap: 60px;
  align-items: start;
  justify-content: center;
  padding-top: 72px;
  padding-bottom: 92px;
}

.material-toc {
  position: sticky;
  top: 96px;
  padding: 20px;
  border: 1px solid var(--materials-line);
  border-radius: 4px;
  background: var(--materials-gray-soft);
}

.material-toc > strong {
  display: block;
  margin-bottom: 12px;
  color: var(--materials-ink);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.material-toc nav {
  display: grid;
  gap: 3px;
}

.material-toc a {
  display: block;
  padding: 8px 9px;
  border-left: 3px solid transparent;
  color: var(--materials-muted);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
}

.material-toc a:hover,
.material-toc a.active {
  border-left-color: var(--materials-blue);
  background: #ffffff;
  color: var(--materials-blue-dark);
}

.material-section {
  padding: 8px 0 54px;
  scroll-margin-top: 100px;
}

.material-section + .material-section {
  padding-top: 52px;
  border-top: 1px solid var(--materials-line);
}

.material-section h2 {
  position: relative;
  margin: 0 0 22px;
  padding-left: 18px;
  color: #6f63d9;
  font-size: clamp(27px, 3vw, 34px);
  font-weight: 780;
  letter-spacing: -0.035em;
  line-height: 1.1;
}

.material-section h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.18em;
  width: 6px;
  height: 0.95em;
  border-radius: 999px;
  background: linear-gradient(180deg, #cfc7ff 0%, #9a8ef7 100%);
}

.material-section h3 {
  margin: 0;
  color: var(--materials-ink);
  font-size: clamp(20px, 2.2vw, 24px);
  line-height: 1.25;
}

.material-section > p {
  margin: 0 0 18px;
  color: var(--materials-soft);
  font-size: 17px;
  line-height: 1.76;
}

.material-section a {
  color: var(--materials-blue-dark);
}

.material-list,
.material-numbered {
  display: grid;
  gap: 11px;
  margin: 22px 0 28px;
  padding-left: 26px;
  color: var(--materials-soft);
  font-size: 16px;
  line-height: 1.65;
}

.material-list li::marker,
.material-numbered li::marker {
  color: var(--materials-blue);
  font-weight: 800;
}

.material-callout {
  margin: 28px 0;
  padding: 22px 24px;
  border: 1px solid #ccd8f5;
  border-left: 4px solid var(--materials-blue);
  border-radius: 4px;
  background: var(--materials-blue-soft);
}

.material-callout--warning {
  border-color: #f0d3af;
  border-left-color: #d98a2d;
  background: var(--materials-warning-soft);
}

.material-callout--success {
  border-color: #cde9da;
  border-left-color: #4b9a73;
  background: var(--materials-success-soft);
}

.material-callout strong {
  display: block;
  margin-bottom: 7px;
  color: var(--materials-ink);
  font-size: 16px;
}

.material-callout p {
  margin: 0;
  color: var(--materials-soft);
  font-size: 15px;
  line-height: 1.65;
}

.credit-example {
  margin: 30px 0;
  overflow: hidden;
  border: 1px solid var(--materials-line);
  border-radius: 5px;
  background: #ffffff;
  box-shadow: var(--materials-shadow);
}

.credit-example__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 25px;
  border-bottom: 1px solid var(--materials-line);
  background: var(--materials-lavender);
}

.credit-example__header span {
  display: block;
  margin-bottom: 5px;
  color: #6257a5;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.credit-example__header h3 {
  font-size: 23px;
}

.credit-example__header > strong {
  color: #bd3f3f;
  font-size: 25px;
}

.credit-example__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: 20px 25px;
  border-bottom: 1px solid var(--materials-line);
}

.credit-example__meta div {
  padding: 8px 16px 8px 0;
}

.credit-example__meta dt {
  margin-bottom: 4px;
  color: var(--materials-muted);
  font-size: 12px;
}

.credit-example__meta dd {
  margin: 0;
  color: var(--materials-ink);
  font-size: 14px;
  font-weight: 650;
}

.credit-example__table-wrap,
.material-table-wrap {
  overflow-x: auto;
}

.credit-example__table,
.material-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 620px;
}

.credit-example__table th,
.credit-example__table td,
.material-table th,
.material-table td {
  padding: 13px 15px;
  border-right: 1px solid var(--materials-line);
  border-bottom: 1px solid var(--materials-line);
  color: var(--materials-soft);
  font-size: 13px;
  text-align: left;
  vertical-align: top;
}

.credit-example__table th,
.material-table th {
  background: #f7f8fb;
  color: var(--materials-ink);
  font-weight: 750;
}

.credit-example__totals {
  display: grid;
  justify-content: end;
  padding: 20px 25px 24px;
}

.credit-example__totals > div {
  display: grid;
  grid-template-columns: 180px 120px;
  gap: 18px;
  padding: 7px 0;
  color: var(--materials-soft);
  font-size: 14px;
}

.credit-example__totals strong {
  text-align: right;
}

.credit-example__totals .is-emphasis {
  margin-top: 7px;
  padding-top: 14px;
  border-top: 1px solid var(--materials-line);
  color: var(--materials-ink);
  font-size: 16px;
}

.credit-example__totals .is-emphasis strong {
  color: #bd3f3f;
}

.material-comparison {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 28px 0;
}

.material-comparison__card {
  padding: 22px;
  border: 1px solid var(--materials-line);
  border-radius: 4px;
  background: #ffffff;
}

.material-comparison__card:first-child {
  background: var(--materials-blue-soft);
}

.material-comparison__card:last-child {
  background: var(--materials-lavender);
}

.material-comparison__card > span {
  display: block;
  margin-bottom: 7px;
  color: var(--materials-muted);
  font-size: 12px;
  font-weight: 750;
  text-transform: uppercase;
}

.material-comparison__card h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.material-comparison__card p {
  margin: 0 0 15px;
  color: var(--materials-soft);
  line-height: 1.6;
}

.material-comparison__card strong {
  color: var(--materials-blue-dark);
  font-size: 14px;
}

.material-faq details {
  border-top: 1px solid var(--materials-line);
}

.material-faq details:last-child {
  border-bottom: 1px solid var(--materials-line);
}

.material-faq summary {
  padding: 17px 0;
  color: var(--materials-ink);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
}

.material-faq details p {
  margin: 0 0 18px;
  color: var(--materials-soft);
  font-size: 15px;
  line-height: 1.65;
}

.material-sources ul {
  display: grid;
  gap: 9px;
  margin: 0;
  padding-left: 20px;
}

.material-sources p {
  margin-top: 18px;
  color: var(--materials-muted);
  font-size: 13px;
}


.material-image {
  margin: 30px 0 36px;
  overflow: hidden;
  border: 1px solid var(--materials-line);
  border-radius: 24px;
  background: #ffffff;
  box-shadow: 0 18px 48px rgba(20, 32, 57, 0.08);
}

.material-image img {
  display: block;
  width: 100%;
  height: auto;
  background: #f8f9fd;
}

.material-image figcaption {
  padding: 14px 18px 16px;
  color: #6c7387;
  font-size: 14px;
  line-height: 1.55;
  background: linear-gradient(180deg, rgba(243, 240, 255, 0.65) 0%, rgba(255,255,255,1) 100%);
}

.material-image--compact {
  max-width: 860px;
}

.material-cta {
  padding: 0 0 92px;
}

.material-cta__card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: center;
  padding: 42px;
  border: 1px solid #d8d3f7;
  border-radius: 5px;
  background: linear-gradient(135deg, var(--materials-lavender), var(--materials-blue-soft));
}

.material-cta__card > div > span,
.materials-eyebrow {
  display: block;
  margin-bottom: 9px;
  color: #5b509f;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.material-cta h2 {
  margin: 0;
  color: var(--materials-ink);
  font-size: clamp(27px, 4vw, 40px);
  letter-spacing: -0.035em;
}

.material-cta p {
  max-width: 720px;
  margin: 12px 0 0;
  color: var(--materials-soft);
  line-height: 1.65;
}

.materials-library-hero {
  padding: 72px 0 58px;
  border-bottom: 1px solid var(--materials-line);
  background: linear-gradient(180deg, #ffffff, #fafbff);
}

.materials-library-hero h1 {
  max-width: 850px;
  margin: 0;
  font-size: clamp(36px, 5vw, 58px);
  letter-spacing: -0.045em;
  line-height: 1.07;
}

.materials-library-hero p {
  max-width: 760px;
  margin: 20px 0 0;
  color: var(--materials-soft);
  font-size: 18px;
  line-height: 1.65;
}

.materials-library-section {
  padding: 64px 0 96px;
}

.materials-library-grid,
.kkk-materials__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.materials-card {
  display: flex;
  min-height: 260px;
  flex-direction: column;
  padding: 26px;
  border: 1px solid var(--materials-line);
  border-radius: 4px;
  background: #ffffff;
  box-shadow: 0 10px 28px rgba(31, 46, 76, 0.05);
}

.materials-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 18px;
}

.materials-card h2,
.materials-card h3 {
  margin: 0;
  color: var(--materials-ink);
  font-size: 23px;
  line-height: 1.25;
}

.materials-card h2 a,
.materials-card h3 a {
  color: inherit;
  text-decoration: none;
}

.materials-card h2 a:hover,
.materials-card h3 a:hover {
  color: var(--materials-blue-dark);
}

.materials-card > p {
  margin: 14px 0 22px;
  color: var(--materials-soft);
  line-height: 1.62;
}

.materials-card__link {
  margin-top: auto;
  color: var(--materials-blue-dark);
  font-size: 14px;
  font-weight: 750;
  text-decoration: none;
}

.kkk-materials {
  padding: 72px 0;
  border-top: 1px solid var(--materials-line);
  border-bottom: 1px solid var(--materials-line);
  background: #fafbfe;
}

.kkk-materials__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: end;
  margin-bottom: 30px;
}

.kkk-materials__head h2 {
  margin: 5px 0 12px;
  color: var(--materials-ink);
  font-size: clamp(28px, 4vw, 42px);
  letter-spacing: -0.035em;
}

.kkk-materials__head p {
  max-width: 720px;
  margin: 0;
  color: var(--materials-soft);
  font-size: 16px;
  line-height: 1.65;
}

.materials-page .footer {
  border-top: 1px solid var(--materials-line);
  background: #ffffff;
}

.materials-page .footer-top {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  padding: 44px 0 28px;
}

.materials-page .footer-brand p {
  max-width: 560px;
  margin: 14px 0 0;
  color: var(--materials-muted);
  font-size: 14px;
  line-height: 1.6;
}

.materials-page .footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 18px;
}

.materials-page .footer-links a {
  color: var(--materials-soft);
  font-size: 13px;
  text-decoration: none;
}

.materials-page .footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 0 28px;
  border-top: 1px solid var(--materials-line);
  color: var(--materials-muted);
  font-size: 12px;
}

@media (max-width: 980px) {
  .material-hero__grid {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .credit-visual {
    max-width: 560px;
    min-height: 380px;
  }

  .material-layout {
    grid-template-columns: minmax(0, var(--materials-reading));
    gap: 32px;
  }

  .material-toc {
    position: static;
  }

  .material-toc nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .materials-page .container,
  .kkk-materials .container {
    width: min(100% - 30px, var(--materials-container));
  }

  .material-hero__grid,
  .materials-library-hero {
    padding-top: 46px;
    padding-bottom: 46px;
  }

  .material-hero h1,
  .materials-library-hero h1 {
    font-size: clamp(28px, 8vw, 36px);
  }

  .material-lead p,
  .materials-library-hero p {
    font-size: 16px;
  }

  .credit-visual {
    min-height: 330px;
  }

  .credit-visual__sheet {
    top: 35px;
    padding: 21px;
  }

  .credit-visual__reference {
    right: 0;
    bottom: 18px;
    width: 205px;
  }

  .material-layout {
    padding-top: 44px;
    padding-bottom: 64px;
  }

  .material-toc nav {
    grid-template-columns: 1fr;
  }

  .material-section {
    padding-bottom: 42px;
  }

  .material-section + .material-section {
    padding-top: 42px;
  }

  .material-section h2 {
    font-size: 26px;
  }

  .material-section h3 {
    font-size: 21px;
  }

  .material-section > p {
    font-size: 16px;
  }

  .credit-example__header,
  .material-cta__card,
  .kkk-materials__head,
  .materials-page .footer-top {
    grid-template-columns: 1fr;
  }

  .credit-example__header {
    display: grid;
  }

  .credit-example__meta,
  .material-comparison,
  .materials-library-grid,
  .kkk-materials__grid {
    grid-template-columns: 1fr;
  }

  .credit-example__totals {
    justify-content: stretch;
  }

  .credit-example__totals > div {
    grid-template-columns: 1fr auto;
  }

  .material-cta {
    padding-bottom: 64px;
  }

  .material-cta__card {
    padding: 28px;
  }

  .materials-page .footer-links {
    justify-content: flex-start;
  }

  .materials-page .footer-bottom {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* ARVETEHA BLOG INDEX — Stage B3 2026-09-17 */
.materials-blog-page {
  background: #f7f9fc;
}

.materials-blog-hero {
  position: relative;
  overflow: hidden;
  padding: 62px 0 18px;
  border-bottom: 1px solid var(--materials-line);
  background:
    radial-gradient(circle at 82% 18%, rgba(224, 218, 255, 0.72), transparent 30%),
    radial-gradient(circle at 15% 0%, rgba(223, 234, 255, 0.72), transparent 28%),
    linear-gradient(180deg, #ffffff 0%, #f8f9ff 100%);
}

.materials-blog-hero__inner {
  position: relative;
  z-index: 1;
}

.materials-blog-hero__title-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: center;
  margin-top: 2px;
}

.materials-blog-hero h1 {
  max-width: 820px;
  margin: 0;
  color: var(--materials-ink);
  font-size: clamp(36px, 4.2vw, 54px);
  font-weight: 800;
  letter-spacing: -0.048em;
  line-height: 1.05;
}

.materials-blog-hero__cta-button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 22px;
  border: 1px solid #0f9f91;
  border-radius: 14px;
  background: linear-gradient(135deg, #13b8a6 0%, #0f9f91 100%);
  box-shadow: 0 12px 28px rgba(15, 159, 145, 0.22);
  color: #ffffff;
  font-size: 15px;
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.materials-blog-hero__cta-button:hover,
.materials-blog-hero__cta-button:focus-visible {
  background: linear-gradient(135deg, #0fae9d 0%, #0c8d81 100%);
  box-shadow: 0 15px 32px rgba(15, 159, 145, 0.27);
  color: #ffffff;
  outline: none;
  transform: translateY(-1px);
}

.materials-blog-hero__cta-button span:last-child {
  font-size: 18px;
  line-height: 1;
  transition: transform 0.18s ease;
}

.materials-blog-hero__cta-button:hover span:last-child,
.materials-blog-hero__cta-button:focus-visible span:last-child {
  transform: translateX(3px);
}

.materials-blog-hero p {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--materials-soft);
  font-size: 18px;
  line-height: 1.7;
}

.materials-blog-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.materials-blog-hero__meta > span,
.materials-blog-count {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  padding: 6px 12px;
  border: 1px solid #dce3ef;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.84);
  color: var(--materials-muted);
  font-size: 13px;
  font-weight: 650;
}

.materials-blog-hero__meta strong {
  margin-right: 5px;
  color: var(--materials-ink);
}

.materials-blog-featured-section {
  padding: 26px 0 34px;
}

.materials-blog-section-kicker {
  margin-bottom: 14px;
  color: #6257a5;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.materials-blog-featured {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  overflow: hidden;
  border: 1px solid #dce2ec;
  border-radius: 22px;
  background: #ffffff;
  box-shadow: 0 22px 58px rgba(31, 46, 76, 0.09);
}

.materials-blog-featured__image {
  display: block;
  min-height: 430px;
  overflow: hidden;
  background: #f0effb;
}

.materials-blog-featured__image img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 430px;
  object-fit: cover;
  transition: transform 260ms ease;
}

.materials-blog-featured:hover .materials-blog-featured__image img {
  transform: scale(1.018);
}

.materials-blog-featured__body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(32px, 5vw, 58px);
}

.materials-blog-featured__body h2 {
  margin: 0;
  color: var(--materials-ink);
  font-size: clamp(28px, 3.5vw, 43px);
  letter-spacing: -0.04em;
  line-height: 1.08;
}

.materials-blog-featured__body h2 a,
.materials-blog-card h3 a {
  color: inherit;
  text-decoration: none;
}

.materials-blog-featured__body h2 a:hover,
.materials-blog-card h3 a:hover {
  color: var(--materials-blue-dark);
}

.materials-blog-featured__body > p {
  margin: 20px 0 24px;
  color: var(--materials-soft);
  font-size: 16px;
  line-height: 1.7;
}

.materials-blog-read-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  color: var(--materials-blue-dark);
  font-size: 14px;
  font-weight: 750;
  text-decoration: none;
}

.materials-blog-read-link span {
  transition: transform 160ms ease;
}

.materials-blog-read-link:hover span {
  transform: translateX(3px);
}

.materials-blog-all-section {
  padding: 44px 0 104px;
}

.materials-blog-section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 28px;
}

.materials-blog-section-head .materials-blog-section-kicker {
  margin-bottom: 8px;
}

.materials-blog-section-head h2 {
  margin: 0;
  color: var(--materials-ink);
  font-size: clamp(30px, 4vw, 44px);
  letter-spacing: -0.04em;
  line-height: 1.08;
}

.materials-blog-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.materials-blog-card {
  display: flex;
  min-width: 0;
  min-height: 100%;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid #dfe5ee;
  border-radius: 16px;
  background: #ffffff;
  box-shadow: 0 10px 30px rgba(31, 46, 76, 0.055);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.materials-blog-card:hover {
  transform: translateY(-3px);
  border-color: #d1d8e6;
  box-shadow: 0 18px 42px rgba(31, 46, 76, 0.09);
}

.materials-blog-card__image {
  display: block;
  overflow: hidden;
  background: #f2f1fb;
}

.materials-blog-card__image img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 240ms ease;
}

.materials-blog-card:hover .materials-blog-card__image img {
  transform: scale(1.025);
}

.materials-blog-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 23px 23px 24px;
}

.materials-blog-card__body .materials-card__meta {
  margin-bottom: 15px;
}

.materials-blog-card h3 {
  margin: 0;
  color: var(--materials-ink);
  font-size: 20px;
  letter-spacing: -0.022em;
  line-height: 1.28;
}

.materials-blog-card__body > p {
  display: -webkit-box;
  margin: 13px 0 22px;
  overflow: hidden;
  color: var(--materials-soft);
  font-size: 14px;
  line-height: 1.62;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

@media (max-width: 1020px) {
  .materials-blog-featured {
    grid-template-columns: 1fr 1fr;
  }

  .materials-blog-featured__image,
  .materials-blog-featured__image img {
    min-height: 390px;
  }

  .materials-blog-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .materials-blog-hero {
    padding: 46px 0 18px;
  }

  .materials-blog-hero__title-row {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .materials-blog-hero h1 {
    font-size: clamp(32px, 9.5vw, 42px);
    line-height: 1.07;
  }

  .materials-blog-hero__cta-button {
    width: 100%;
    min-height: 48px;
  }

  .materials-blog-hero p {
    font-size: 16px;
  }

  .materials-blog-featured-section {
    padding-top: 26px;
  }

  .materials-blog-featured {
    grid-template-columns: 1fr;
    border-radius: 16px;
  }

  .materials-blog-featured__image,
  .materials-blog-featured__image img {
    min-height: 0;
    aspect-ratio: 16 / 9;
  }

  .materials-blog-featured__body {
    padding: 26px 24px 29px;
  }

  .materials-blog-featured__body h2 {
    font-size: 30px;
  }

  .materials-blog-all-section {
    padding-top: 32px;
    padding-bottom: 72px;
  }

  .materials-blog-section-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

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

  .materials-blog-card__body {
    padding: 21px 20px 22px;
  }
}

/* Related reading: shared ET / RU / EN article footer */
.material-related {
  padding: 24px 0 72px;
  background: #ffffff;
}

.material-related__head {
  margin-bottom: 24px;
}

.material-related__head > span {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--materials-blue-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.material-related__head h2 {
  margin: 0;
  color: var(--materials-ink);
  font-size: clamp(28px, 3.3vw, 38px);
  line-height: 1.1;
  letter-spacing: -0.035em;
}

.material-related__grid .materials-blog-card {
  min-height: 100%;
}

@media (max-width: 760px) {
  .material-related {
    padding: 14px 0 54px;
  }

  .material-related__head {
    margin-bottom: 18px;
  }

  .material-related__head h2 {
    font-size: 28px;
  }
}