.page-about {
  --about-stripe: repeating-linear-gradient(45deg, rgba(0, 229, 195, .1) 0 1px, transparent 1px 8px);
  --about-text: rgba(242, 251, 247, .87);
  --about-text-soft: rgba(242, 251, 247, .62);
}

.page-about .about-hero {
  padding: 26px 0 14px;
  position: relative;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  right: -10%;
  top: -40px;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(0, 229, 195, .16), transparent 68%);
  pointer-events: none;
}

.page-about .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 20px;
}

.page-about .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-about .about-hero h1 {
  margin: 12px 0 0;
  font-size: clamp(28px, 6.4vw, 52px);
  line-height: 1.12;
  letter-spacing: -.015em;
  max-width: 16em;
  color: var(--white);
}

.page-about .about-hero__lead {
  margin: 16px 0 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--about-text);
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 7px 15px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: rgba(15, 87, 65, .34);
  font-size: 13px;
  color: var(--muted);
  white-space: nowrap;
}

.page-about .about-hero__facts b {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--cyan);
}

.page-about .about-hero__figure {
  margin: 0;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--about-stripe), linear-gradient(150deg, rgba(15, 87, 65, .9), rgba(7, 31, 24, .95));
  overflow: hidden;
  position: relative;
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  opacity: .92;
}

.page-about .about-doc {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 18px 0 72px;
}

.page-about .about-toc__title {
  margin: 0 0 12px;
  color: var(--muted);
}

.page-about .about-toc__list {
  list-style: none;
  margin: 0;
  padding: 0 0 12px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-toc__list li {
  flex: 0 0 auto;
}

.page-about .about-toc__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  min-height: 40px;
  border: 1px solid var(--line-soft);
  border-radius: var(--pill);
  background: rgba(7, 31, 24, .5);
  color: var(--about-text-soft);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.page-about .about-toc__list a:hover,
.page-about .about-toc__list a:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(0, 229, 195, .08);
}

.page-about .about-toc__list a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-about .about-toc__list a[aria-current] {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(0, 229, 195, .1);
}

.page-about .about-sec {
  padding: 34px 0 38px;
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: 24px;
}

.page-about .about-sec:first-child {
  border-top: 1px solid var(--line-soft);
  padding-top: 20px;
}

.page-about .about-sec__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
}

.page-about .about-sec__head .idx {
  color: var(--cyan);
  opacity: .8;
}

.page-about .about-sec__head h2 {
  margin: 0;
  font-size: clamp(21px, 4.4vw, 30px);
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-about .about-sec__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-about .about-text p {
  margin: 0 0 1.1em;
  max-width: 660px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--about-text);
}

.page-about .about-text p:last-child {
  margin-bottom: 0;
}

.page-about .about-text a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 195, .4);
  transition: border-color var(--ease), color var(--ease);
}

.page-about .about-text a:hover,
.page-about .about-text a:focus-visible {
  color: var(--cyan-hi);
  border-bottom-color: var(--cyan-hi);
}

.page-about .about-sec__aside {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  align-content: start;
}

.page-about .note-card {
  position: relative;
  overflow: hidden;
  padding: 16px 18px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: linear-gradient(158deg, rgba(15, 87, 65, .92), rgba(7, 31, 24, .88));
  transition: transform var(--ease), border-color var(--ease);
}

.page-about .note-card:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
}

.page-about .note-card::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -70px;
  width: 170px;
  height: 170px;
  background: var(--about-stripe);
  opacity: .6;
  pointer-events: none;
}

.page-about .note-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 5vw, 32px);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-about .note-card--orange .note-card__num {
  color: var(--orange);
}

.page-about .note-card__label {
  margin: 6px 0 0;
  color: var(--muted);
}

.page-about .note-card__text {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--about-text-soft);
}

.page-about .phases {
  position: relative;
  list-style: none;
  margin: 6px 0 22px;
  padding: 0 0 0 30px;
}

.page-about .phases::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), rgba(0, 229, 195, .1));
  box-shadow: 0 0 10px rgba(0, 229, 195, .38);
}

.page-about .phase {
  position: relative;
  padding: 0 0 26px;
}

.page-about .phase:last-child {
  padding-bottom: 4px;
}

.page-about .phase::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 4px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 229, 195, .14), 0 0 12px rgba(0, 229, 195, .55);
  transition: box-shadow var(--ease), background var(--ease);
}

.page-about .phase:hover::before {
  background: var(--cyan-hi);
  box-shadow: 0 0 0 5px rgba(0, 229, 195, .2), 0 0 18px rgba(0, 229, 195, .8);
}

.page-about .phase .label {
  margin: 0 0 4px;
  color: var(--muted);
}

.page-about .phase h3 {
  margin: 0 0 6px;
  font-size: 17px;
  line-height: 1.4;
  color: var(--white);
}

.page-about .phase p:not(.label) {
  margin: 0;
  max-width: 620px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-text);
}

.page-about .team-bars {
  list-style: none;
  margin: 4px 0 22px;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .team-bars li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 10px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(15, 87, 65, .3);
  transition: border-color var(--ease), transform var(--ease);
}

.page-about .team-bars li:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-about .team-bars__name {
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
}

.page-about .team-bars__num {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cyan);
}

.page-about .team-bars__track {
  grid-column: 1 / -1;
  height: 8px;
  border-radius: var(--pill);
  background: rgba(159, 189, 178, .16);
  overflow: hidden;
}

.page-about .team-bars__fill {
  display: block;
  height: 100%;
  border-radius: var(--pill);
  background: linear-gradient(90deg, var(--cyan), var(--cyan-hi));
}

.page-about .team-bars li:nth-child(1) .team-bars__fill { width: 43%; }
.page-about .team-bars li:nth-child(2) .team-bars__fill {
  width: 36%;
  background: linear-gradient(90deg, var(--orange), #ff9d6b);
}
.page-about .team-bars li:nth-child(3) .team-bars__fill {
  width: 21%;
  background: linear-gradient(90deg, var(--amber), #ffe0a0);
}

.page-about .team-bars__note {
  grid-column: 1 / -1;
  font-size: 13px;
  line-height: 1.7;
  color: var(--about-text-soft);
  transition: color var(--ease);
}

.page-about .team-bars li:hover .team-bars__note {
  color: var(--cyan-hi);
}

.page-about .steps {
  list-style: none;
  margin: 4px 0 22px;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .step {
  padding: 16px 18px;
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius-sm);
  background: rgba(7, 31, 24, .55);
  transition: border-color var(--ease), transform var(--ease);
}

.page-about .step:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
}

.page-about .step__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
  margin-bottom: 6px;
}

.page-about .step h3 {
  margin: 0 0 6px;
  font-size: 16px;
  line-height: 1.4;
  color: var(--white);
}

.page-about .step p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--about-text-soft);
}

.page-about .qa-list {
  margin: 4px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .qa-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .qa-row dt {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-about .qa-row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-text);
}

.page-about .place-grid {
  margin: 4px 0 22px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.page-about .place-item {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(15, 87, 65, .28);
  min-width: 0;
}

.page-about .place-item dt {
  color: var(--muted);
  margin-bottom: 6px;
}

.page-about .place-item dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-about .place-item dd a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 195, .4);
}

.page-about .place-item dd a:hover,
.page-about .place-item dd a:focus-visible {
  color: var(--cyan-hi);
  border-bottom-color: var(--cyan-hi);
}

.page-about .about-figure {
  margin: 22px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--about-stripe), rgba(7, 31, 24, .7);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  opacity: .92;
}

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

.page-about .about-figure--side img {
  aspect-ratio: 10 / 7;
}

.page-about .about-figure__cap {
  padding: 9px 14px 11px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  border-top: 1px solid var(--line-soft);
}

@media (min-width: 640px) {
  .page-about .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .qa-row {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-top: 34px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 1fr);
    align-items: end;
    gap: 40px;
  }

  .page-about .about-doc {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 48px;
    padding-top: 26px;
  }

  .page-about .about-toc {
    position: sticky;
    top: 20px;
    align-self: start;
  }

  .page-about .about-toc__title {
    margin-bottom: 14px;
  }

  .page-about .about-toc__list {
    display: block;
    overflow: visible;
    padding: 0 0 0 26px;
    position: relative;
  }

  .page-about .about-toc__list::before {
    content: "";
    position: absolute;
    left: 5px;
    top: 8px;
    bottom: 10px;
    width: 1px;
    background: linear-gradient(180deg, rgba(0, 229, 195, .5), rgba(0, 229, 195, .06));
  }

  .page-about .about-toc__list li {
    position: relative;
    padding: 0;
    margin: 0 0 4px;
  }

  .page-about .about-toc__list a {
    display: flex;
    padding: 9px 0 9px 2px;
    min-height: 0;
    border: 0;
    border-radius: 0;
    background: none;
    font-size: 13.5px;
    line-height: 1.5;
    white-space: normal;
  }

  .page-about .about-toc__list a::before {
    content: "";
    position: absolute;
    left: -26px;
    top: 14px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 1px solid var(--line-soft);
    background: var(--field);
    transition: background var(--ease), box-shadow var(--ease), border-color var(--ease);
  }

  .page-about .about-toc__list a:hover,
  .page-about .about-toc__list a:focus-visible {
    background: none;
    border: 0;
  }

  .page-about .about-toc__list a[aria-current] {
    background: none;
    border: 0;
  }

  .page-about .about-toc__list a[aria-current]::before {
    background: var(--cyan);
    border-color: var(--cyan);
    box-shadow: 0 0 10px rgba(0, 229, 195, .8);
  }

  .page-about .about-sec {
    padding: 42px 0 46px;
  }

  .page-about .about-sec:first-child {
    padding-top: 8px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-sec__body {
    grid-template-columns: minmax(0, 660px) 268px;
    gap: 34px;
    align-items: start;
  }

  .page-about .about-sec__aside {
    padding-top: 4px;
  }

  .page-about .phases {
    padding-left: 34px;
  }

  .page-about .phase::before {
    left: -34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .note-card,
  .page-about .team-bars li,
  .page-about .step,
  .page-about .phase::before {
    transition: none;
  }

  .page-about .note-card:hover,
  .page-about .team-bars li:hover,
  .page-about .step:hover {
    transform: none;
  }
}
<<<END>>>