.page-about {
  --about-ink-soft: rgba(20, 20, 20, 0.74);
  --about-panel-light: rgba(255, 255, 255, 0.62);
  --about-soft-shadow: 10px 10px 0 rgba(20, 20, 20, 0.04);
  background:
    linear-gradient(rgba(20, 20, 20, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 20, 20, 0.03) 1px, transparent 1px),
    var(--paper);
  background-size: 28px 28px;
  color: var(--ink);
  font-family: var(--font-base);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-about .breadcrumb {
  padding-top: 24px;
  margin-bottom: 0;
}

.page-about .about-hero {
  padding: clamp(28px, 5vw, 64px) 0 40px;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 36px;
}

.page-about .about-hero__main {
  position: relative;
}

.page-about .about-hero__annotation {
  display: inline-block;
  color: var(--muted);
  margin-bottom: 8px;
}

.page-about .about-hero .eyebrow {
  display: inline-block;
  color: var(--signal-blue);
  font-size: var(--fs-status);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.page-about .about-hero h1 {
  max-width: 11em;
  margin: 0 0 18px;
  font-family: var(--font-headline);
  font-size: var(--fs-hero);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
}

.page-about .about-hero__lead {
  max-width: 60ch;
  margin: 0 0 30px;
  font-size: 1.06rem;
  color: var(--about-ink-soft);
}

.page-about .about-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
}

.page-about .about-hero__stat {
  position: relative;
  flex: 1 1 96px;
  min-width: 0;
  padding-left: 16px;
}

.page-about .about-hero__stat::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  border-radius: 2px;
  background: var(--grad-data);
}

.page-about .about-hero__stat:nth-child(2)::before {
  background: linear-gradient(180deg, var(--orange), var(--gold));
}

.page-about .about-hero__stat:nth-child(3)::before {
  background: linear-gradient(180deg, var(--signal-purple), var(--cyan));
}

.page-about .about-hero__stat-num {
  display: block;
  font-family: var(--font-number);
  font-size: clamp(1.8rem, 6vw, 2.6rem);
  line-height: 1.05;
  letter-spacing: 0.01em;
}

.page-about .about-hero__stat-label {
  display: block;
  margin-top: 4px;
  font-size: var(--fs-status);
  color: var(--muted);
  letter-spacing: 0.08em;
}

.page-about .about-hero__index {
  position: relative;
  border: 1px solid var(--line);
  background: var(--about-panel-light);
  padding: 26px 22px 22px;
  box-shadow: var(--about-soft-shadow);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.page-about .about-hero__index::before {
  content: "FILE INDEX";
  position: absolute;
  top: -10px;
  right: 14px;
  padding: 2px 10px;
  background: var(--ink);
  color: var(--paper);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.page-about .about-hero__index-title {
  margin: 0 0 14px;
  font-family: var(--font-headline);
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.page-about .about-hero__index-list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
}

.page-about .about-hero__index-list li {
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero__index-list a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 4px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  transition: padding-left 0.2s ease, color 0.2s ease;
}

.page-about .about-hero__index-list a:hover,
.page-about .about-hero__index-list a:focus-visible {
  padding-left: 12px;
  color: var(--signal-blue);
}

.page-about .about-hero__index-code {
  border: 1px solid var(--signal-purple);
  padding: 2px 6px;
  font-family: var(--font-number);
  font-size: 0.75rem;
  color: var(--signal-purple);
  white-space: nowrap;
}

.page-about .about-files {
  padding-top: 12px;
}

.page-about .profile-file {
  position: relative;
  margin-bottom: 34px;
  border: 1px solid var(--line);
  background: var(--about-panel-light);
  padding: clamp(22px, 4vw, 38px);
  box-shadow: var(--about-soft-shadow);
}

.page-about .profile-file::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  height: 4px;
  background: var(--grad-data);
}

.page-about .profile-file__head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding-bottom: 16px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.page-about .profile-file__code {
  font-family: var(--font-number);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  padding: 4px 8px;
  color: var(--signal-blue);
  border: 1px solid currentColor;
  white-space: nowrap;
  line-height: 1.4;
}

.page-about .profile-file__heading h2 {
  margin: 0 0 2px;
  font-family: var(--font-headline);
  font-size: var(--fs-section-title);
  font-weight: 800;
  line-height: 1.25;
}

.page-about .profile-file__sub {
  font-size: var(--fs-status);
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-about .profile-file__body > p {
  max-width: 68ch;
  margin-top: 0;
}

.page-about .profile-file--dark {
  background: var(--ink);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: none;
  color: var(--paper);
}

.page-about .profile-file--dark::before {
  background: linear-gradient(90deg, var(--orange), var(--gold));
}

.page-about .profile-file--dark .profile-file__head {
  border-bottom-color: rgba(255, 255, 255, 0.14);
}

.page-about .profile-file--dark .profile-file__code {
  color: var(--gold);
  border-color: currentColor;
}

.page-about .profile-file--dark .profile-file__sub {
  color: rgba(245, 240, 232, 0.66);
}

.page-about .profile-file--dark .profile-file__body > p {
  color: rgba(245, 240, 232, 0.82);
}

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

.page-about .about-brand-note {
  margin: 20px 0 8px;
  font-weight: 700;
}

.page-about .about-brand-tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .about-brand-tags li {
  padding: 10px 14px 10px 18px;
  border-left: 3px solid var(--signal-blue);
  background: rgba(65, 88, 208, 0.06);
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.5;
}

.page-about .about-brand-tags li:nth-child(2) {
  border-left-color: var(--signal-purple);
  background: rgba(139, 92, 246, 0.06);
}

.page-about .about-brand-tags li:nth-child(3) {
  border-left-color: var(--orange);
  background: rgba(255, 90, 54, 0.06);
}

.page-about .about-brand-tags li:nth-child(4) {
  border-left-color: var(--gold);
  background: rgba(242, 176, 30, 0.08);
}

.page-about .coverage-map {
  position: relative;
  overflow: hidden;
  cursor: crosshair;
  outline-offset: 4px;
}

.page-about .coverage-map__pin {
  position: absolute;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(20, 20, 20, 0.78);
  color: var(--paper);
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(20, 20, 20, 0.22);
  pointer-events: none;
}

.page-about .coverage-map__pin b {
  display: none;
  color: var(--gold);
  font-weight: 700;
}

.page-about .coverage-map:hover .coverage-map__pin,
.page-about .coverage-map:focus .coverage-map__pin {
  background: var(--ink);
}

.page-about .coverage-map:hover .coverage-map__pin b,
.page-about .coverage-map:focus .coverage-map__pin b {
  display: inline;
}

.page-about .about-figure {
  margin: 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-about .about-figure figcaption {
  margin-top: 8px;
  font-size: var(--fs-status);
  color: var(--muted);
  letter-spacing: 0.04em;
}

.page-about .profile-file--dark .about-figure img {
  border-color: rgba(255, 255, 255, 0.14);
}

.page-about .profile-file--dark .about-figure figcaption {
  color: rgba(245, 240, 232, 0.6);
}

.page-about .coverage-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 24px 0 20px;
}

.page-about .coverage-grid__item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 16px 14px;
  border: 1px solid var(--line);
  background: rgba(65, 88, 208, 0.05);
}

.page-about .coverage-grid__item strong {
  font-family: var(--font-number);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  line-height: 1;
  color: var(--signal-blue);
}

.page-about .coverage-grid__item span {
  font-size: var(--fs-status);
  color: var(--muted);
}

.page-about .coverage-org {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .coverage-org li {
  position: relative;
  padding: 10px 14px 10px 36px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.4);
  font-size: 0.94rem;
}

.page-about .coverage-org li::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--grad-data);
}

.page-about .coverage-org li:nth-child(2)::before {
  background: var(--orange);
}

.page-about .coverage-org li:nth-child(3)::before {
  background: var(--gold);
}

.page-about .coverage-org li:nth-child(4)::before {
  background: var(--cyan);
}

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

.page-about .about-process {
  list-style: none;
  margin: 24px 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-process li {
  display: grid;
  grid-template-columns: 42px 96px 1fr;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  border-radius: 6px;
}

.page-about .about-process li > span:first-child {
  font-family: var(--font-number);
  font-size: 1.2rem;
  color: var(--orange);
}

.page-about .about-process li strong {
  font-weight: 700;
  font-size: 1rem;
}

.page-about .about-process li em {
  font-style: normal;
  font-size: 0.88rem;
  color: rgba(245, 240, 232, 0.66);
}

.page-about .value-grid {
  display: grid;
  gap: 14px;
}

.page-about .value-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.5);
  padding: 20px 18px;
}

.page-about .value-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--grad-data);
}

.page-about .value-card:nth-child(2)::before {
  background: linear-gradient(90deg, var(--gold), var(--orange));
}

.page-about .value-card:nth-child(3)::before {
  background: linear-gradient(90deg, var(--signal-purple), var(--cyan));
}

.page-about .value-card .file-label {
  display: inline-block;
  margin-bottom: 10px;
}

.page-about .value-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-headline);
  font-size: 1.06rem;
  line-height: 1.3;
}

.page-about .value-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--about-ink-soft);
}

.page-about .profile-file__more {
  margin-top: 22px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.page-about .profile-file__more summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  cursor: pointer;
  font-size: var(--fs-status);
  font-weight: 700;
  color: var(--signal-blue);
  letter-spacing: 0.06em;
  user-select: none;
  list-style: none;
}

.page-about .profile-file__more summary::-webkit-details-marker {
  display: none;
}

.page-about .profile-file__more summary::after {
  content: "+";
  color: var(--orange);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1;
}

.page-about .profile-file__more[open] summary::after {
  content: "–";
}

.page-about .profile-file__more p {
  margin: 10px 0 0;
  max-width: 68ch;
  font-size: 0.92rem;
  color: var(--about-ink-soft);
}

.page-about .profile-file--dark .profile-file__more {
  border-top-color: rgba(255, 255, 255, 0.16);
}

.page-about .profile-file--dark .profile-file__more summary {
  color: var(--cyan);
}

.page-about .profile-file--dark .profile-file__more summary::after {
  color: var(--gold);
}

.page-about .profile-file--dark .profile-file__more p {
  color: rgba(245, 240, 232, 0.78);
}

.page-about .about-colophon {
  margin-top: 8px;
  padding: clamp(32px, 6vw, 64px) 0;
  border-top: 1px solid var(--line);
}

.page-about .about-colophon__grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-about .about-figure--tall img {
  max-height: 460px;
}

.page-about .about-colophon__content p {
  max-width: 60ch;
  margin: 0;
  font-size: 1.05rem;
  line-height: 2;
}

.page-about .about-colophon__content strong {
  color: var(--signal-blue);
  font-weight: 700;
}

.page-about .about-colophon__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

@media (min-width: 640px) {
  .page-about .coverage-grid {
    grid-template-columns: repeat(4, 1fr);
  }

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

  .page-about .about-process li {
    grid-template-columns: 48px 110px 1fr;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-bottom: 52px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 48px;
    align-items: start;
  }

  .page-about .about-hero__main {
    min-height: 340px;
  }

  .page-about .about-hero__stats {
    flex-wrap: nowrap;
    gap: 28px;
  }

  .page-about .about-brand-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
    align-items: center;
  }

  .page-about .about-mechanism-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    align-items: center;
  }

  .page-about .about-colophon__grid {
    grid-template-columns: 320px minmax(0, 1fr);
    gap: 48px;
  }

  .page-about .profile-file {
    margin-bottom: 44px;
  }
}