.page-about {
  --about-pad: clamp(24px, 4vw, 72px);
  --about-h2: clamp(28px, 4vw, 48px);
  background: var(--c-paper);
  color: var(--c-graphite);
  line-height: 1.7;
}

.page-about .breadcrumbs {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 18px var(--about-pad) 0;
}

.page-about__h2 {
  font-family: var(--f-heading);
  font-size: var(--about-h2);
  line-height: 1.25;
  margin: 8px 0 0;
  color: inherit;
}

.page-about__section-index {
  font-family: var(--f-heading);
  font-size: 18px;
  color: var(--c-signal);
  letter-spacing: 0.06em;
  margin: 0;
}

.page-about__section-note {
  font-size: var(--fs-caption);
  color: var(--c-slate);
  line-height: 1.8;
  margin: 12px 0 0;
  max-width: 44ch;
}

.page-about__tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-paper);
}

.page-about__tag::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--c-signal);
  border-radius: 50%;
  flex: 0 0 auto;
}

.page-about__figure-note {
  font-size: var(--fs-caption);
  color: var(--c-slate);
  line-height: 1.7;
  margin-top: 10px;
}

.page-about > * {
  position: relative;
  z-index: 1;
}

.page-about__hero {
  position: relative;
  z-index: 0;
  background:
    radial-gradient(1200px 500px at 85% -10%, rgba(30, 90, 138, 0.55), transparent 60%),
    linear-gradient(135deg, var(--c-midnight) 0%, var(--c-navy) 100%);
  color: var(--c-paper);
  padding: 44px var(--about-pad) 72px;
  overflow: hidden;
}

.page-about__hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 32px;
  background: var(--c-paper);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  pointer-events: none;
}

.page-about__hero > * {
  position: relative;
  z-index: 1;
}

.page-about__hero h1 {
  font-family: var(--f-heading);
  font-size: clamp(30px, 6vw, 56px);
  line-height: 1.15;
  margin: 16px 0 20px;
  letter-spacing: -0.01em;
  color: var(--c-paper);
}

.page-about__h1-sub {
  display: block;
  font-size: 0.62em;
  color: var(--c-white-dim);
  margin-top: 8px;
  line-height: 1.4;
}

.page-about__lede {
  font-size: 17px;
  line-height: 1.85;
  color: var(--c-white-dim);
  max-width: 58ch;
  margin: 0;
}

.page-about__hero-figure {
  margin: 28px 0 0;
}

.page-about__hero-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.page-about__hero .page-about__figure-note {
  color: var(--c-white-faint);
}

.page-about__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about__hero .page-about__btn-ghost {
  border-color: rgba(247, 245, 240, 0.55);
  color: var(--c-paper);
}

.page-about__hero-right {
  margin-top: 48px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(247, 245, 240, 0.14);
  border-radius: var(--radius);
  padding: 26px 22px;
}

.page-about__hero-right::before {
  content: "";
  display: block;
  height: 4px;
  width: 48%;
  background: linear-gradient(90deg, var(--c-signal), transparent);
  transform: skewX(-20deg);
  margin-bottom: 20px;
}

.page-about__panel-label {
  font-size: var(--fs-caption);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-white-faint);
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(247, 245, 240, 0.12);
  margin: 0 0 20px;
}

.page-about__dial {
  position: relative;
  width: 168px;
  height: 168px;
  margin: 0 auto 24px;
}

.page-about__dial-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.page-about__dial-track {
  fill: none;
  stroke: rgba(247, 245, 240, 0.12);
  stroke-width: 6;
}

.page-about__dial-fill {
  fill: none;
  stroke: var(--c-signal);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-dasharray: 76 100;
}

.page-about__dial-copy {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.page-about__dial-value {
  font-family: var(--f-heading);
  font-size: 44px;
  color: var(--c-paper);
  line-height: 1;
}

.page-about__dial-unit {
  font-size: 18px;
  margin-left: 2px;
  color: var(--c-gold);
}

.page-about__dial-label {
  font-size: var(--fs-caption);
  color: var(--c-white-dim);
  margin-top: 6px;
}

.page-about__stat-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 20px;
  margin: 0;
}

.page-about__stat {
  padding: 14px 0 0;
  border-top: 1px solid rgba(247, 245, 240, 0.1);
}

.page-about__stat-term {
  font-size: var(--fs-caption);
  color: var(--c-white-faint);
  margin: 0;
}

.page-about__stat-value {
  font-family: var(--f-heading);
  font-size: 26px;
  color: var(--c-paper);
  margin-top: 4px;
}

.page-about__hero-note {
  margin-top: 24px;
  padding: 16px;
  background: rgba(255, 122, 0, 0.1);
  border-left: 2px solid var(--c-signal);
}

.page-about__hero-note p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-white-dim);
}

.page-about__origin {
  padding: 64px var(--about-pad) 72px;
}

.page-about__origin-left {
  margin-bottom: 36px;
}

.page-about__slash {
  margin-top: 20px;
  height: 8px;
  width: 64px;
  background: var(--c-signal);
  clip-path: polygon(0 0, 100% 0, 100% 40%, 0 100%);
}

.page-about__origin-right {
  max-width: 720px;
}

.page-about__lead {
  font-size: 22px;
  line-height: 1.85;
  margin: 0;
  color: var(--c-graphite);
}

.page-about__lead strong {
  color: var(--c-navy);
  font-weight: 700;
}

.page-about__body {
  margin-top: 20px;
  line-height: 1.9;
  color: var(--c-slate);
  font-size: 16px;
}

.page-about__beliefs {
  margin-top: 36px;
  display: grid;
  gap: 16px;
}

.page-about__belief {
  padding: 22px 20px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-left: 2px solid var(--c-signal);
  border-radius: var(--radius);
}

.page-about__belief-num {
  font-family: var(--f-heading);
  color: var(--c-gold);
  font-size: 15px;
}

.page-about__belief h3 {
  font-size: 18px;
  margin: 8px 0 6px;
  color: var(--c-graphite);
}

.page-about__belief p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-slate);
  margin: 0;
}

.page-about__milestones {
  position: relative;
  background:
    radial-gradient(800px 400px at 100% 100%, rgba(30, 90, 138, 0.5), transparent 60%),
    linear-gradient(180deg, var(--c-midnight) 0%, var(--c-navy) 100%);
  color: var(--c-paper);
  padding: 72px var(--about-pad) 92px;
  overflow: hidden;
}

.page-about__milestones::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 32px;
  background: var(--c-paper);
  clip-path: polygon(0 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about__milestones > * {
  position: relative;
  z-index: 1;
}

.page-about__milestones .page-about__h2 {
  color: var(--c-paper);
}

.page-about__milestones .page-about__section-note {
  color: var(--c-white-dim);
}

.page-about__mile-left {
  max-width: 360px;
}

.page-about__mile-figure {
  margin: 28px 0 0;
}

.page-about__mile-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(247, 245, 240, 0.14);
  border-radius: var(--radius);
}

.page-about__milestones .page-about__figure-note {
  color: var(--c-white-faint);
}

.page-about__credentials {
  margin-top: 24px;
  padding: 20px;
  border: 1px solid rgba(247, 245, 240, 0.14);
  background: rgba(18, 58, 92, 0.5);
  border-radius: var(--radius);
}

.page-about__credentials-title {
  font-size: 16px;
  color: var(--c-gold);
  margin: 0 0 12px;
  letter-spacing: 0.05em;
}

.page-about__credential-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about__credential-list li {
  padding-left: 16px;
  position: relative;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-white-dim);
}

.page-about__credential-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 6px;
  height: 6px;
  background: var(--c-signal);
  transform: rotate(45deg);
}

.page-about__team-note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--c-white-faint);
}

.page-about__timeline {
  list-style: none;
  margin: 48px 0 0;
  padding: 0;
  position: relative;
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: rgba(247, 245, 240, 0.25);
}

.page-about__timeline-item {
  position: relative;
  padding-left: 36px;
  margin-bottom: 20px;
}

.page-about__timeline-dot {
  position: absolute;
  left: 2px;
  top: 24px;
  width: 11px;
  height: 11px;
  background: var(--c-signal);
  border: 2px solid var(--c-midnight);
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(247, 245, 240, 0.18);
}

.page-about__timeline-card {
  background: rgba(247, 245, 240, 0.04);
  border: 1px solid rgba(247, 245, 240, 0.14);
  border-radius: var(--radius);
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.page-about__timeline-card:hover {
  background: rgba(247, 245, 240, 0.07);
  border-color: rgba(255, 122, 0, 0.6);
}

.page-about__timeline-summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 18px 18px;
  cursor: pointer;
  list-style: none;
}

.page-about__timeline-summary::-webkit-details-marker {
  display: none;
}

.page-about__timeline-summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-size: 18px;
  color: var(--c-signal);
  line-height: 1;
  align-self: center;
}

.page-about__timeline-card[open] .page-about__timeline-summary::after {
  content: "–";
}

.page-about__year {
  font-family: var(--f-heading);
  color: var(--c-gold);
  font-size: 15px;
  letter-spacing: 0.04em;
  border: 1px solid rgba(201, 169, 97, 0.5);
  padding: 2px 8px;
  border-radius: var(--radius);
  white-space: nowrap;
  flex: 0 0 auto;
}

.page-about__timeline-title {
  font-size: 17px;
  color: var(--c-paper);
  line-height: 1.45;
  font-weight: 600;
  margin: 0;
}

.page-about__timeline-card[open] .page-about__timeline-summary {
  border-bottom: 1px solid rgba(247, 245, 240, 0.12);
}

.page-about__timeline-body {
  padding: 0 18px;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base), padding var(--transition-base);
}

.page-about__timeline-card[open] .page-about__timeline-body {
  padding: 4px 18px 18px;
  max-height: 320px;
}

.page-about__timeline-body p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-white-dim);
}

.page-about__timeline-tags {
  font-size: 12px;
  color: var(--c-white-faint);
  border-top: 1px dashed rgba(247, 245, 240, 0.14);
  padding-top: 10px;
  margin-top: 4px;
}

.page-about__architecture {
  padding: 72px var(--about-pad);
}

.page-about__arch-left {
  max-width: 640px;
}

.page-about__steps {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
}

.page-about__step {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-about__step:first-child {
  border-top: 1px solid var(--c-line);
}

.page-about__step-num {
  flex: 0 0 36px;
  height: 36px;
  border: 1px solid var(--c-navy);
  color: var(--c-navy);
  font-family: var(--f-heading);
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.page-about__step-copy h3 {
  font-size: 18px;
  margin: 0 0 6px;
  color: var(--c-graphite);
}

.page-about__step-copy p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-slate);
  margin: 0;
}

.page-about__arch-right {
  margin-top: 36px;
}

.page-about__arch-figure {
  margin: 0 0 16px;
}

.page-about__arch-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.page-about__arch-note {
  background: var(--c-midnight);
  color: var(--c-white-dim);
  padding: 18px;
  border-left: 2px solid var(--c-gold);
  border-radius: var(--radius);
}

.page-about__arch-note p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
}

.page-about__arch-note a {
  color: var(--c-signal);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-about__commitments {
  padding: 72px var(--about-pad);
  background: #fff;
  border-top: 1px solid var(--c-line);
}

.page-about__commit-head {
  max-width: 680px;
}

.page-about__commit-grid {
  display: grid;
  gap: 16px;
  margin-top: 36px;
}

.page-about__commit-card {
  padding: 24px;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}

.page-about__commit-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, transparent 50%, var(--c-signal) 50%);
  opacity: 0.8;
}

.page-about__commit-num {
  font-family: var(--f-heading);
  color: var(--c-gold);
  font-size: 15px;
}

.page-about__commit-card h3 {
  font-size: 18px;
  margin: 8px 0 8px;
  color: var(--c-graphite);
}

.page-about__commit-card p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-slate);
  margin: 0;
}

.page-about__commit-card a {
  color: var(--c-navy);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-about__trust {
  margin: 36px 0 0;
  padding: 24px 24px 24px 28px;
  border-left: 3px solid var(--c-gold);
  background: var(--c-paper);
  font-family: var(--f-heading);
  font-size: 18px;
  line-height: 1.85;
  color: var(--c-graphite);
  border-radius: var(--radius);
}

.page-about__commit-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

@media (min-width: 900px) {
  .page-about__hero {
    display: grid;
    grid-template-columns: 1.25fr 0.75fr;
    gap: 56px;
    align-items: start;
    padding: 80px var(--about-pad) 110px;
    max-width: var(--container-wide);
    margin: 0 auto;
  }

  .page-about__hero-left h1 {
    font-size: var(--fs-heading-lg);
  }

  .page-about__hero-right {
    margin-top: 0;
    position: sticky;
    top: 120px;
  }

  .page-about__origin {
    display: grid;
    grid-template-columns: 0.8fr 1.6fr;
    gap: 72px;
    padding: 96px var(--about-pad);
    max-width: var(--container-wide);
    margin: 0 auto;
  }

  .page-about__origin-left {
    position: sticky;
    top: 120px;
    align-self: start;
    margin-bottom: 0;
  }

  .page-about__beliefs {
    grid-template-columns: 1fr 1fr;
  }

  .page-about__milestones {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 72px;
    padding: 120px var(--about-pad);
    max-width: var(--container-wide);
    margin: 0 auto;
  }

  .page-about__mile-left {
    position: sticky;
    top: 120px;
    align-self: start;
    max-width: 360px;
  }

  .page-about__timeline {
    margin-top: 24px;
  }

  .page-about__architecture {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 64px;
    padding: 96px var(--about-pad);
    max-width: var(--container-wide);
    margin: 0 auto;
    align-items: start;
  }

  .page-about__arch-right {
    margin-top: 0;
    position: sticky;
    top: 120px;
  }

  .page-about__commitments {
    padding: 96px var(--about-pad);
    max-width: var(--container-wide);
    margin: 0 auto;
  }

  .page-about__commit-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1440px) {
  .page-about__hero {
    grid-template-columns: 720px 400px;
    justify-content: center;
  }

  .page-about__origin {
    grid-template-columns: 300px 620px;
    justify-content: center;
  }

  .page-about__milestones {
    grid-template-columns: 340px 560px;
    justify-content: center;
  }

  .page-about__architecture {
    grid-template-columns: 560px 480px;
    justify-content: center;
  }
}