.page-about {
  --about-red: #FF2A2A;
  --about-black: #0A0A0A;
  --about-dark: #121212;
  --about-white: #F5F5F5;
  --about-silver: #C0C0C0;
  --about-blue: #00D4FF;
  --about-green: #2E8B77;
  --about-gray: #666666;
  --about-border: rgba(192, 192, 192, 0.2);
  background-color: var(--about-black);
  color: var(--about-white);
  overflow-x: hidden;
}

.page-about__crumbs {
  padding: 32px 0 0;
}

.page-about__crumbs .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--about-silver);
}

.page-about__crumbs .breadcrumbs a {
  color: var(--about-silver);
  text-decoration: none;
  transition: color 0.2s;
}

.page-about__crumbs .breadcrumbs a:hover {
  color: var(--about-red);
}

.page-about__crumbs .breadcrumbs [aria-current="page"] {
  color: var(--about-white);
}

.page-about__hero {
  position: relative;
  padding: 56px 0 72px;
  border-bottom: 1px solid var(--about-border);
  background:
    linear-gradient(100deg, transparent 22%, rgba(255, 42, 42, 0.08) 33%, transparent 44%),
    radial-gradient(circle at 90% -10%, rgba(0, 212, 255, 0.07), transparent 50%);
}

.page-about__hero-inner {
  display: grid;
  gap: 40px;
  align-items: end;
}

.page-about__hero-copy .eyebrow {
  margin-bottom: 14px;
  color: var(--about-red);
}

.page-about__hero-copy h1 {
  font-family: var(--header-font);
  font-size: clamp(40px, 8vw, 76px);
  font-weight: 900;
  font-style: italic;
  text-transform: uppercase;
  line-height: 0.95;
  margin: 0 0 18px;
  color: var(--about-white);
  letter-spacing: 0.02em;
}

.page-about__hero-copy h1::after {
  content: "";
  display: block;
  width: 64px;
  height: 6px;
  margin-top: 20px;
  background: var(--about-red);
}

.page-about__hero-lead {
  font-size: 16px;
  line-height: 1.75;
  color: var(--about-silver);
  max-width: 600px;
  margin: 0 0 30px;
}

.page-about__hero-index {
  border: 1px solid var(--about-border);
  background: rgba(18, 18, 18, 0.6);
  padding: 24px;
}

.page-about__hero-index > p {
  font-family: var(--header-font);
  font-size: 14px;
  font-weight: 700;
  font-style: italic;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--about-red);
  margin: 0 0 16px;
}

.page-about__hero-index ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about__hero-index li {
  border-top: 1px solid rgba(192, 192, 192, 0.14);
}

.page-about__hero-index li:first-child {
  border-top: 0;
}

.page-about__hero-index a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 4px;
  color: var(--about-white);
  text-decoration: none;
  font-size: 15px;
  transition: color 0.2s, background 0.2s;
}

.page-about__hero-index a:hover,
.page-about__hero-index a:focus-visible {
  color: var(--about-red);
  background: rgba(255, 42, 42, 0.04);
}

.page-about__hero-index span {
  font-family: var(--header-font);
  font-style: italic;
  font-size: 15px;
  color: var(--about-silver);
}

.page-about__section {
  padding: 64px 0;
}

.page-about__story {
  position: relative;
  overflow: hidden;
  padding: 72px 0;
}

.page-about__story::after {
  content: "ABOUT";
  position: absolute;
  right: -40px;
  top: 10px;
  font-family: var(--header-font);
  font-size: 180px;
  font-weight: 900;
  font-style: italic;
  line-height: 1;
  color: rgba(255, 42, 42, 0.04);
  pointer-events: none;
  z-index: 0;
}

.page-about__story-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
}

.page-about__story-copy .eyebrow {
  color: var(--about-red);
  margin-bottom: 12px;
}

.page-about__story-copy h2,
.page-about__milestones-head h2,
.page-about__team-head h2,
.page-about__cert-head h2,
.page-about__partners-head h2 {
  font-family: var(--header-font);
  font-size: clamp(30px, 5vw, 48px);
  font-weight: 900;
  font-style: italic;
  text-transform: uppercase;
  line-height: 1;
  margin: 0 0 20px;
  letter-spacing: 0.02em;
}

.page-about__story-copy p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-silver);
  margin: 0 0 16px;
}

.page-about__story-copy a {
  color: var(--about-blue);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-about__story-copy a:hover {
  color: var(--about-white);
}

.page-about__story-media {
  margin: 0;
  position: relative;
  border: 1px solid var(--about-border);
  background: var(--about-dark);
  padding: 10px;
}

.page-about__story-media::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 40px;
  height: 40px;
  border-top: 3px solid var(--about-red);
  border-left: 3px solid var(--about-red);
  z-index: 1;
}

.page-about__story-media img,
.page-about__team-media img,
.page-about__honor-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}

.page-about__story-media img {
  filter: saturate(0.9) contrast(1.05);
}

.page-about__story-media figcaption,
.page-about__honor-media figcaption {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--about-silver);
  padding: 10px 4px 0;
}

.page-about__milestones {
  padding: 72px 0;
  background: linear-gradient(180deg, rgba(18, 18, 18, 0.5), transparent);
  border-block: 1px solid var(--about-border);
}

.page-about__milestones-head {
  text-align: center;
  max-width: 660px;
  margin: 0 auto 44px;
}

.page-about__milestones-head .eyebrow {
  color: var(--about-red);
  margin-bottom: 12px;
}

.page-about__milestones-head .section-desc,
.page-about__team-head .section-desc,
.page-about__cert-head .section-desc,
.page-about__partners-head .section-desc {
  font-size: 15px;
  line-height: 1.7;
  margin: 12px 0 0;
}

.page-about__milestones-head .section-desc {
  color: var(--about-silver);
}

.page-about__timeline {
  list-style: none;
  margin: 0 auto;
  padding: 0 0 0 28px;
  max-width: 720px;
  position: relative;
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 7px;
  width: 1px;
  background: linear-gradient(180deg, var(--about-red), var(--about-border) 15%, var(--about-border) 85%, var(--about-red));
}

.page-about__milestone {
  position: relative;
  padding-bottom: 44px;
}

.page-about__milestone:last-child {
  padding-bottom: 0;
}

.page-about__milestone-dot {
  position: absolute;
  top: 5px;
  left: 0;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--about-red);
  border: 3px solid var(--about-black);
  box-shadow: 0 0 0 1px var(--about-red), 0 0 20px rgba(255, 42, 42, 0.55);
}

.page-about__milestone-year {
  font-family: var(--header-font);
  font-size: 22px;
  font-weight: 900;
  font-style: italic;
  color: var(--about-red);
  letter-spacing: 0.06em;
  line-height: 1;
}

.page-about__milestone-card {
  margin-top: 10px;
  padding: 20px 18px;
  background: rgba(18, 18, 18, 0.75);
  border: 1px solid var(--about-border);
  border-left: 3px solid var(--about-red);
  transition: background 0.3s ease, border-color 0.3s ease;
}

.page-about__milestone-card h3 {
  font-family: var(--header-font);
  font-size: 20px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 8px;
  color: var(--about-white);
}

.page-about__milestone-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--about-silver);
  margin: 0;
}

.page-about__milestone:hover .page-about__milestone-card,
.page-about__milestone:focus-within .page-about__milestone-card {
  background: rgba(255, 42, 42, 0.05);
  border-color: rgba(255, 42, 42, 0.45);
}

.page-about__team {
  padding: 72px 0;
  background: var(--about-white);
  color: var(--about-black);
  border-block: 1px solid var(--about-border);
}

.page-about__team-head {
  max-width: 660px;
  margin-bottom: 40px;
}

.page-about__team-head .eyebrow,
.page-about__cert-head .eyebrow,
.page-about__partners-head .eyebrow {
  color: var(--about-red);
  margin-bottom: 12px;
}

.page-about__team-head h2,
.page-about__partners-head h2 {
  color: var(--about-black);
}

.page-about__team-head .section-desc,
.page-about__partners-head .section-desc {
  color: var(--about-gray);
}

.page-about__team-grid {
  display: grid;
  gap: 32px;
  align-items: center;
}

.page-about__team-media {
  margin: 0;
  padding: 8px;
  border: 1px solid rgba(10, 10, 10, 0.2);
  background: #FFFFFF;
}

.page-about__team-media img {
  filter: grayscale(0.15) contrast(1.08);
}

.page-about__team-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.page-about__stat {
  border: 1px solid rgba(10, 10, 10, 0.16);
  background: #FFFFFF;
  padding: 22px 16px;
  text-align: center;
}

.page-about__stat .data-number {
  display: block;
  font-family: var(--header-font);
  font-size: 34px;
  font-style: italic;
  font-weight: 900;
  line-height: 1;
  color: var(--about-red);
}

.page-about__stat .data-label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--about-gray);
  margin-top: 8px;
}

.page-about__team-desc h3 {
  font-family: var(--header-font);
  font-size: 22px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 12px;
  color: var(--about-black);
}

.page-about__team-desc p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-gray);
  margin: 0 0 14px;
}

.page-about__cert {
  padding: 72px 0;
}

.page-about__cert-head {
  max-width: 660px;
  margin-bottom: 24px;
}

.page-about__cert-head .section-desc {
  color: var(--about-silver);
}

.page-about__cert-filter,
.page-about__partners-filter {
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.page-about__cert-filter .tag,
.page-about__partners-filter .tag {
  appearance: none;
  background: transparent;
  border: 1px solid var(--about-border);
  color: var(--about-silver);
  padding: 8px 16px;
  font-size: 13px;
  letter-spacing: 0.05em;
  font-family: var(--body-font);
  line-height: 1.4;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.page-about__cert-filter .tag:hover,
.page-about__cert-filter .tag:focus-visible,
.page-about__partners-filter .tag:hover,
.page-about__partners-filter .tag:focus-visible {
  border-color: var(--about-red);
  color: var(--about-white);
}

.page-about__cert-filter .tag.is-active,
.page-about__partners-filter .tag.is-active {
  background: var(--about-red);
  border-color: var(--about-red);
  color: #FFFFFF;
  font-weight: 600;
}

.page-about__cert-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about__cert-card {
  padding: 26px 22px;
  border: 1px solid var(--about-border);
  border-top: 3px solid var(--about-red);
  background: rgba(18, 18, 18, 0.85);
}

.page-about__cert-card h3 {
  font-family: var(--header-font);
  font-size: 20px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 10px;
  color: var(--about-white);
}

.page-about__cert-card p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-silver);
  margin: 0;
}

.page-about__cert-note {
  margin: 28px 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--about-blue);
  background: rgba(0, 212, 255, 0.06);
  font-size: 13px;
  line-height: 1.7;
  color: var(--about-silver);
}

.page-about__partners {
  padding: 72px 0;
  background: var(--about-white);
  color: var(--about-black);
  border-top: 1px solid var(--about-border);
}

.page-about__partners-head {
  max-width: 660px;
}

.page-about__partners-filter {
  margin-top: 24px;
}

.page-about__partners-filter .tag {
  border-color: rgba(10, 10, 10, 0.2);
  color: var(--about-black);
}

.page-about__partners-filter .tag:hover,
.page-about__partners-filter .tag:focus-visible {
  border-color: var(--about-red);
  color: var(--about-black);
}

.page-about__partners-filter .tag.is-active {
  background: var(--about-red);
  border-color: var(--about-red);
  color: #FFFFFF;
}

.page-about__partner-grid {
  list-style: none;
  margin: 24px 0 40px;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about__partner-card {
  padding: 24px 22px;
  background: #FFFFFF;
  border: 1px solid rgba(10, 10, 10, 0.14);
  border-bottom: 3px solid var(--about-silver);
}

.page-about__partner-card[data-filter-value="data"] {
  border-bottom-color: var(--about-blue);
}

.page-about__partner-card[data-filter-value="media"] {
  border-bottom-color: var(--about-green);
}

.page-about__partner-card[data-filter-value="honor"] {
  border-bottom-color: var(--about-red);
}

.page-about__partner-card h3 {
  font-family: var(--header-font);
  font-size: 20px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 10px;
  color: var(--about-black);
}

.page-about__partner-card p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-gray);
  margin: 0;
}

.page-about__honor-media {
  margin: 40px 0 0;
  position: relative;
  padding: 8px;
  border: 1px solid rgba(10, 10, 10, 0.14);
  background: #FFFFFF;
}

.page-about__honor-media::before {
  content: "";
  position: absolute;
  bottom: -1px;
  right: -1px;
  width: 48px;
  height: 48px;
  border-bottom: 3px solid var(--about-red);
  border-right: 3px solid var(--about-red);
}

.page-about__honor-media img {
  filter: grayscale(0.3) contrast(1.05);
}

.page-about__honor-media figcaption {
  color: var(--about-gray);
}

.page-about__footer-cta {
  padding: 72px 0 88px;
  background:
    linear-gradient(120deg, rgba(255, 42, 42, 0.16), transparent 60%),
    var(--about-black);
}

.page-about__footer-cta-inner {
  text-align: center;
}

.page-about__footer-cta h2 {
  font-family: var(--header-font);
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 900;
  font-style: italic;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 12px;
}

.page-about__footer-cta p {
  color: var(--about-silver);
  font-size: 15px;
  line-height: 1.7;
  margin: 0 0 28px;
}

.page-about__footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

@media (min-width: 768px) {
  .page-about__section {
    padding: 88px 0;
  }

  .page-about__story {
    padding: 96px 0;
  }

  .page-about__story-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 48px;
    align-items: center;
  }

  .page-about__milestones {
    padding: 96px 0;
  }

  .page-about__timeline {
    max-width: 980px;
    padding-left: 0;
  }

  .page-about__timeline::before {
    left: 50%;
    transform: translateX(-0.5px);
  }

  .page-about__milestone {
    width: 50%;
    padding-bottom: 64px;
    padding-left: 40px;
    margin-left: auto;
  }

  .page-about__milestone:nth-child(odd) {
    margin-left: 0;
    padding-left: 0;
    padding-right: 40px;
    text-align: right;
  }

  .page-about__milestone-dot {
    left: -7px;
  }

  .page-about__milestone:nth-child(odd) .page-about__milestone-dot {
    left: auto;
    right: -7px;
  }

  .page-about__milestone-card {
    margin-top: 12px;
  }

  .page-about__milestone:nth-child(odd) .page-about__milestone-card {
    border-left: 1px solid var(--about-border);
    border-right: 3px solid var(--about-red);
  }

  .page-about__milestone:hover .page-about__milestone-card,
  .page-about__milestone:focus-within .page-about__milestone-card {
    background: rgba(255, 42, 42, 0.05);
    border-color: rgba(255, 42, 42, 0.45);
  }

  .page-about__milestone:nth-child(odd):hover .page-about__milestone-card,
  .page-about__milestone:nth-child(odd):focus-within .page-about__milestone-card {
    border-color: rgba(255, 42, 42, 0.45);
  }

  .page-about__team,
  .page-about__cert,
  .page-about__partners {
    padding: 96px 0;
  }

  .page-about__cert-list,
  .page-about__partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 900px) {
  .page-about__hero-inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
    gap: 64px;
  }

  .page-about__team-grid {
    grid-template-columns: 0.85fr 0.65fr 1.1fr;
    gap: 36px;
  }

  .page-about__team-stats {
    gap: 16px;
  }
}

@media (min-width: 1024px) {
  .page-about__story-grid {
    gap: 68px;
  }
}