.page-about {
  --about-grid-line: rgba(78, 205, 196, 0.07);
  --about-card-text: #121212;
  background-color: var(--color-page-bg);
  color: var(--color-text-primary);
}

.page-about .container {
  max-width: var(--max-width);
}

.page-about .breadcrumb {
  padding-top: 18px;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.page-about .breadcrumb a {
  color: var(--color-card-cyan);
  text-decoration: none;
  border-bottom: 1px dotted var(--color-card-cyan);
}

.page-about .breadcrumb a:hover {
  color: var(--color-card-yellow);
  border-bottom-color: var(--color-card-yellow);
}

.page-about .about-hero {
  padding-bottom: 32px;
  border-bottom: 2px solid var(--color-border);
}

.page-about .about-hero__eyebrow {
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--color-card-cyan);
  text-transform: uppercase;
  margin: 0 0 10px;
}

.page-about .about-hero__title {
  font-family: var(--font-headings);
  font-size: 32px;
  line-height: 1.12;
  margin: 0 0 14px;
  max-width: 960px;
  letter-spacing: 0.02em;
}

.page-about .about-hero__desc {
  font-size: 15px;
  line-height: 1.65;
  color: var(--color-text-secondary);
  max-width: 880px;
  margin: 0 0 16px;
}

.page-about .about-hero__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero__meta-line {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-text-primary);
  background: var(--color-section-bg-a);
  border: 1px solid var(--color-border);
  padding: 6px 12px;
  border-radius: 4px;
}

.page-about .section {
  padding: 44px 0;
}

.page-about .about-section-head {
  margin-bottom: 26px;
  border-left: 4px solid var(--color-card-orange);
  padding-left: 16px;
}

.page-about .about-section-index {
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--color-card-cyan);
  margin: 0 0 6px;
}

.page-about .about-section-title {
  font-family: var(--font-headings);
  font-size: 26px;
  line-height: 1.15;
  margin: 0;
}

.page-about .about-section-lead {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin: 8px 0 0;
  max-width: 740px;
}

.page-about .about-stats {
  background-image:
    linear-gradient(var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid-line) 1px, transparent 1px);
  background-size: 28px 28px;
  background-position: center top;
}

.page-about .about-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.page-about .about-stat-card {
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 16px 14px;
  min-height: 128px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-about .about-stat-card:hover {
  transform: translateY(-4px) rotate(-1deg);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.55);
}

.page-about .about-stat-card--cyan {
  background: var(--color-card-cyan);
  color: var(--about-card-text);
}

.page-about .about-stat-card--orange {
  background: var(--color-card-orange);
  color: var(--about-card-text);
}

.page-about .about-stat-card--yellow {
  background: var(--color-card-yellow);
  color: var(--about-card-text);
}

.page-about .about-stat-card--deep {
  background: var(--color-section-bg-b);
  color: var(--color-text-primary);
  border-color: var(--color-card-cyan);
}

.page-about .about-stat-card__num {
  font-family: var(--font-headings);
  font-size: 40px;
  line-height: 1;
  letter-spacing: 0.01em;
}

.page-about .about-stat-card__label {
  font-family: var(--font-headings);
  font-size: 16px;
  margin-top: 12px;
}

.page-about .about-stat-card__note {
  font-size: 12px;
  line-height: 1.4;
  margin-top: 4px;
  opacity: 0.82;
}

.page-about .about-stats-extra {
  display: grid;
  gap: 22px;
  margin-top: 30px;
}

.page-about .about-media {
  margin: 0;
  padding: 10px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  background: rgba(18, 18, 18, 0.55);
  box-shadow: var(--shadow);
}

.page-about .about-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 4px;
}

.page-about .about-media figcaption {
  margin-top: 8px;
  font-size: 13px;
  color: var(--color-text-secondary);
  text-align: center;
}

.page-about .about-dist {
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-section-bg-a);
  padding: 16px;
  box-shadow: var(--shadow);
}

.page-about .about-dist__title {
  font-family: var(--font-headings);
  font-size: 17px;
  margin: 0 0 12px;
  color: var(--color-card-yellow);
}

.page-about .about-dist .data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin-bottom: 14px;
}

.page-about .about-dist .data-table th,
.page-about .about-dist .data-table td {
  border: 1px solid var(--color-border);
  padding: 8px 10px;
  text-align: left;
}

.page-about .about-dist .data-table thead th {
  background: var(--color-section-bg-b);
  color: var(--color-card-cyan);
  font-family: var(--font-headings);
  font-size: 14px;
}

.page-about .about-dist .data-table tfoot th {
  background: var(--color-section-bg-b);
  color: var(--color-card-yellow);
  border-top: 2px solid var(--color-card-orange);
}

.page-about .about-dist .data-table tbody tr:hover {
  background: rgba(78, 205, 196, 0.08);
}

.page-about .about-cats-layout {
  display: grid;
  gap: 28px;
}

.page-about .about-media--tree {
  align-self: start;
}

.page-about .about-faq .faq-panel {
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  background: rgba(18, 18, 18, 0.6);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.35);
  margin-bottom: 14px;
  overflow: hidden;
}

.page-about .about-faq .faq-panel summary {
  list-style: none;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 14px 16px;
  cursor: pointer;
  background: var(--color-section-bg-b);
  border-bottom: 2px solid transparent;
  transition: background 0.2s ease;
}

.page-about .about-faq .faq-panel summary:hover {
  background: rgba(46, 59, 46, 0.75);
}

.page-about .about-faq .faq-panel summary::-webkit-details-marker {
  display: none;
}

.page-about .about-faq .faq-panel details[open] summary {
  border-bottom-color: var(--color-border);
}

.page-about .about-faq .faq-panel summary::after {
  content: "+";
  font-family: var(--font-headings);
  font-size: 24px;
  line-height: 1;
  color: var(--color-card-yellow);
  margin-left: auto;
}

.page-about .about-faq .faq-panel details[open] summary::after {
  content: "−";
  color: var(--color-accent-red);
}

.page-about .about-faq__num {
  font-family: var(--font-headings);
  font-size: 18px;
  color: var(--color-card-cyan);
  background: rgba(18, 18, 18, 0.4);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.page-about .about-faq__title {
  font-family: var(--font-headings);
  font-size: 17px;
  color: var(--color-text-primary);
}

.page-about .about-faq__count {
  font-size: 13px;
  color: var(--color-card-yellow);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 2px 8px;
}

.page-about .about-faq .faq-panel__content {
  padding: 16px;
  border-top: 1px solid transparent;
}

.page-about .about-faq .faq-panel__content p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--color-text-secondary);
  margin: 0 0 12px;
}

.page-about .about-faq__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-faq__tags li {
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: rgba(18, 18, 18, 0.4);
  padding: 4px 10px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.page-about .about-flow-layout {
  display: grid;
  gap: 26px;
  align-items: start;
}

.page-about .about-flow-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-flow-step {
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  background: rgba(18, 18, 18, 0.6);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.35);
  padding: 14px 16px;
  display: flex;
  gap: 14px;
  transition: transform 0.2s ease;
}

.page-about .about-flow-step:hover {
  transform: translateX(4px);
}

.page-about .about-flow-step__num {
  font-family: var(--font-headings);
  font-size: 22px;
  line-height: 1.1;
  color: var(--color-card-cyan);
  min-width: 34px;
}

.page-about .about-flow-step__body h3 {
  font-family: var(--font-headings);
  font-size: 16px;
  margin: 0 0 4px;
  color: var(--color-card-yellow);
}

.page-about .about-flow-step__body p {
  font-size: 14px;
  line-height: 1.5;
  margin: 0;
  color: var(--color-text-secondary);
}

.page-about .about-media--wide {
  max-width: 560px;
}

.page-about .about-methods {
  background-image:
    linear-gradient(var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid-line) 1px, transparent 1px);
  background-size: 28px 28px;
  background-position: center top;
}

.page-about .about-method-grid {
  display: grid;
  gap: 16px;
}

.page-about .about-method {
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  background: rgba(18, 18, 18, 0.72);
  padding: 20px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 190px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-about .about-method:hover {
  transform: translateY(-4px) rotate(0.5deg);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.55);
}

.page-about .about-method__icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-headings);
  font-size: 20px;
  color: #121212;
  border-radius: var(--radius);
  border: 2px solid #121212;
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.4);
}

.page-about .about-method__icon--cyan { background: var(--color-card-cyan); }
.page-about .about-method__icon--yellow { background: var(--color-card-yellow); }
.page-about .about-method__icon--orange { background: var(--color-card-orange); }
.page-about .about-method__icon--magenta { background: var(--color-tag-magenta); }
.page-about .about-method__icon--purple { background: var(--color-tag-purple); }
.page-about .about-method__icon--green { background: var(--color-status-green); }

.page-about .about-method__title {
  font-family: var(--font-headings);
  font-size: 17px;
  margin: 0;
}

.page-about .about-method__text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin: 0;
  flex: 1;
}

.page-about .about-method__hint {
  font-size: 12px;
  color: var(--color-card-cyan);
  border-left: 2px solid var(--color-card-cyan);
  padding-left: 8px;
}

.page-about .about-demo-panel {
  grid-column: 1 / -1;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius);
  background: var(--color-section-bg-a);
  padding: 20px;
  display: grid;
  gap: 22px;
  box-shadow: var(--shadow);
}

.page-about .about-demo-block__title {
  font-family: var(--font-headings);
  font-size: 16px;
  margin: 0 0 12px;
  color: var(--color-card-orange);
}

.page-about .about-tag-demo {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-version-bar {
  border: 2px solid var(--color-border);
  background: rgba(18, 18, 18, 0.6);
  padding: 8px;
  border-radius: var(--radius);
  margin-bottom: 12px;
}

.page-about .about-version-bar span {
  display: inline-block;
  padding: 6px 16px;
  border: 2px solid transparent;
  border-radius: 4px;
  margin-right: 8px;
  font-family: var(--font-headings);
  font-size: 18px;
  color: var(--color-text-secondary);
  background: rgba(18, 18, 18, 0.5);
}

.page-about .about-version-bar span[aria-current="true"] {
  background: var(--color-card-yellow);
  color: #121212;
  border-color: var(--color-accent-red);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.4);
}

.page-about .about-demo-block__text {
  font-size: 14px;
  line-height: 1.55;
  color: var(--color-text-secondary);
  margin: 0 0 12px;
}

.page-about .about-guide {
  color: var(--color-text-primary);
}

.page-about .about-guide-inner {
  display: grid;
  gap: 18px;
}

.page-about .about-guide-block {
  background: rgba(18, 18, 18, 0.65);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}

.page-about .about-guide-block .about-section-title {
  font-size: 19px;
  color: var(--color-card-yellow);
}

.page-about .about-guide-block p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin: 12px 0 0;
}

.page-about .about-status-legend {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-status-legend li {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-primary);
}

.page-about .about-guide-links {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .about-guide-links a {
  color: var(--color-card-cyan);
  text-decoration: underline dotted;
  text-underline-offset: 3px;
  font-size: 14px;
}

.page-about .about-guide-links a:hover {
  color: var(--color-card-yellow);
}

.page-about .btn {
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: 10px 16px;
  font-family: var(--font-body);
  font-size: 14px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.page-about .btn--primary {
  background: var(--color-card-orange);
  color: #121212;
  border-color: #121212;
  font-weight: 700;
}

.page-about .btn--secondary {
  background: var(--color-section-bg-b);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.page-about .btn:hover {
  transform: translateY(-2px);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.4);
}

.page-about .btn--block {
  width: 100%;
}

@media (min-width: 700px) {
  .page-about .about-stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-stats-grid .about-stat-card:nth-child(3n) {
    transform: translateY(6px);
  }

  .page-about .about-stats-grid .about-stat-card:nth-child(3n):hover {
    transform: translateY(2px) rotate(-1deg);
  }

  .page-about .about-stats-extra {
    grid-template-columns: minmax(240px, 420px) 1fr;
    align-items: stretch;
  }

  .page-about .about-method-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .page-about .about-cats-layout {
    grid-template-columns: 300px 1fr;
  }

  .page-about .about-flow-layout {
    grid-template-columns: 1fr minmax(300px, 460px);
    align-items: center;
  }

  .page-about .about-method-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-demo-panel {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .about-guide-inner {
    grid-template-columns: 1fr 1fr 1.2fr;
  }

  .page-about .about-hero__title {
    font-size: 40px;
  }
}

@media (min-width: 1200px) {
  .page-about .about-section-title {
    font-size: 30px;
  }

  .page-about .about-stat-card {
    min-height: 140px;
  }

  .page-about .about-stat-card__num {
    font-size: 46px;
  }
}