.page-about {
  --page-h-hero: clamp(2.4rem, 7.2vw, 5.6rem);
  --page-max-copy: 640px;
  position: relative;
  background: var(--color-black);
  color: var(--color-white);
  overflow-x: hidden;
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  margin-bottom: var(--space-3);
  font-size: 0.85rem;
  color: var(--color-gray);
}

.page-about .breadcrumb__link {
  color: var(--color-silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.page-about .breadcrumb__link:hover {
  color: var(--color-green);
  border-bottom-color: var(--color-green);
}

.page-about .breadcrumb__item[aria-current="page"] {
  color: var(--color-green);
}

.page-about .breadcrumb__item + .breadcrumb__item::before {
  content: "／";
  margin-right: 4px;
  color: var(--color-gray);
}

.page-about .section {
  position: relative;
  padding: var(--space-5) 0;
}

.page-about .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.page-about .eyebrow {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin: 0 0 var(--space-2);
  padding: 5px 10px;
  border: var(--line-green);
  border-left-width: 3px;
  background: rgba(0, 255, 136, 0.06);
  color: var(--color-green);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
}

.page-about .section-head .eyebrow {
  margin-bottom: 0;
}

.page-about .section-title {
  margin: 0;
  font-family: var(--font-headline);
  font-size: clamp(1.8rem, 4.4vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: 0.02em;
}

.page-about .section-title__num {
  margin-right: 0.3em;
  color: var(--color-orange);
}

.page-about .paragraph {
  max-width: var(--page-max-copy);
  margin: 0 0 var(--space-3);
  color: var(--color-silver);
}

/* Hero */
.page-about__hero {
  position: relative;
  display: flex;
  align-items: stretch;
  min-height: 540px;
  padding: var(--space-4) 0;
  overflow: hidden;
}

.page-about__hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.page-about__hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(105deg, rgba(10, 11, 10, 0.97) 8%, rgba(10, 11, 10, 0.82) 45%, rgba(0, 255, 136, 0.08) 130%);
}

.page-about__sweep {
  position: absolute;
  z-index: 1;
  top: 16%;
  right: -8%;
  width: 72vw;
  height: 5px;
  background: linear-gradient(90deg, transparent, var(--color-green), transparent);
  transform: rotate(-16deg);
  pointer-events: none;
}

.page-about__sweep--orange {
  top: 26%;
  right: 4%;
  width: 30vw;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-orange), transparent);
  transform: rotate(-16deg);
}

.page-about__hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

.page-about__hero-inner .eyebrow {
  margin-bottom: var(--space-2);
}

.page-about__hero-title {
  max-width: 760px;
  margin: var(--space-2) 0;
  font-family: var(--font-headline);
  font-size: var(--page-h-hero);
  line-height: 1.08;
  letter-spacing: 0.02em;
  text-shadow: 0 4px 40px rgba(0, 255, 136, 0.18);
}

.page-about__hero-bar {
  margin: 0 0.18em;
  color: var(--color-green);
  font-family: var(--font-data);
  font-size: 0.92em;
}

.page-about__hero-lead {
  margin: 0 0 var(--space-2);
  padding-left: 12px;
  border-left: 3px solid var(--color-green);
  color: var(--color-orange);
  font-family: var(--font-headline);
  font-size: 1.15rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-about__hero-text {
  max-width: 600px;
  margin: 0 0 var(--space-4);
  color: var(--color-silver);
  font-size: 1rem;
}

.page-about__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.page-about__hero-note {
  position: absolute;
  top: 50%;
  right: 18px;
  z-index: 2;
  transform: translateY(-50%) rotate(180deg);
  writing-mode: vertical-rl;
  color: var(--color-gray);
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  pointer-events: none;
}

/* Mission */
.page-about__mission-grid {
  display: grid;
  gap: var(--space-4);
}

.page-about__mission-statement {
  margin: 0 0 var(--space-3);
  padding-left: var(--space-3);
  border-left: 4px solid var(--color-green);
  font-family: var(--font-headline);
  font-size: clamp(1.35rem, 3vw, 2.1rem);
  line-height: 1.35;
}

.page-about__mission-points {
  display: grid;
  gap: 10px;
  margin-top: var(--space-3);
}

.page-about__mission-point {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border: var(--line-silver);
  border-left: 3px solid var(--color-green);
  background: var(--color-gray-dark);
  color: var(--color-white);
  font-size: 0.92rem;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.page-about__mission-point:hover {
  border-left-color: var(--color-orange);
  background: #272727;
  transform: translateX(6px);
}

.page-about__mission-point .data-font {
  min-width: 22px;
  color: var(--color-green);
  font-weight: 700;
  font-size: 0.95rem;
}

.page-about__mission-aside {
  padding: var(--space-3);
  border-left: 3px solid var(--color-orange);
}

.page-about__mission-aside .card__title {
  margin: 0 0 var(--space-2);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-about__mission-list {
  display: grid;
  gap: 10px;
  margin: 0 0 var(--space-3);
  padding: 0;
  list-style: none;
}

.page-about__mission-list li {
  position: relative;
  padding-left: 20px;
  color: var(--color-silver);
  font-size: 0.92rem;
  line-height: 1.5;
}

.page-about__mission-list li::before {
  content: "";
  position: absolute;
  top: 0.48em;
  left: 0;
  width: 8px;
  height: 8px;
  background: var(--color-orange);
  transform: rotate(45deg);
}

.page-about__mission-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* Timeline */
.page-about__timeline {
  position: relative;
  margin: 0;
  padding: 8px 0 0 34px;
  list-style: none;
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 13px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-green) 0%, rgba(0, 255, 136, 0.4) 45%, rgba(192, 192, 192, 0.15) 100%);
}

.page-about__timeline-item {
  position: relative;
  padding-bottom: var(--space-4);
}

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

.page-about__timeline-item::before {
  content: "";
  position: absolute;
  top: 8px;
  left: -26px;
  width: 12px;
  height: 12px;
  border: 3px solid var(--color-green);
  border-radius: 50%;
  background: var(--color-black);
  box-shadow: 0 0 0 5px rgba(0, 255, 136, 0.14);
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.page-about__timeline-item:hover::before {
  border-color: var(--color-orange);
  box-shadow: 0 0 0 9px rgba(255, 107, 0, 0.16);
  transform: scale(1.12);
}

.page-about__timeline-year {
  margin: 0 0 6px;
  color: var(--color-green);
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1;
}

.page-about__timeline-body {
  padding: var(--space-3);
  border: var(--line-silver);
  border-left: 2px solid var(--color-green);
  border-radius: var(--radius);
  background: var(--color-gray-dark);
  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.3);
  transition: border-color 0.25s, background 0.25s, box-shadow 0.25s, transform 0.25s;
}

.page-about__timeline-item:hover .page-about__timeline-body {
  border-left-color: var(--color-orange);
  background: #242724;
  box-shadow: var(--shadow-panel);
  transform: translateX(5px);
}

.page-about__timeline-title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-headline);
  font-size: 1.08rem;
  letter-spacing: 0.04em;
}

.page-about__timeline-desc {
  margin: 0 0 var(--space-2);
  color: var(--color-silver);
  font-size: 0.9rem;
  line-height: 1.65;
}

.page-about__timeline-body .tag {
  font-size: 0.7rem;
}

/* Data capability */
.page-about__cap-grid {
  display: grid;
  gap: var(--space-4);
}

.page-about__cap-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.page-about__stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
}

.page-about .stat {
  position: relative;
  padding: var(--space-3) var(--space-2) var(--space-2);
  overflow: hidden;
  border: var(--line-silver);
  border-radius: var(--radius);
  background: var(--color-gray-dark);
  transition: border-color 0.25s, background 0.25s, transform 0.25s, box-shadow 0.25s;
}

.page-about .stat::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: var(--color-green);
  transition: background 0.25s;
}

.page-about .stat:hover {
  border-color: rgba(0, 255, 136, 0.45);
  background: #242724;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(0, 255, 136, 0.08);
  transform: translateY(-3px);
}

.page-about .stat:hover::before {
  background: var(--color-orange);
}

.page-about .stat__value {
  display: block;
  color: var(--color-green);
  font-family: var(--font-data);
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  font-weight: 700;
  line-height: 1.15;
}

.page-about .stat__label {
  display: block;
  margin-top: 6px;
  color: var(--color-gray);
  font-size: 0.84rem;
  letter-spacing: 0.06em;
}

.page-about__gauge {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: var(--space-2) var(--space-3);
  border: var(--line-green);
  border-radius: var(--radius);
  background: #0d100d;
}

.page-about__gauge svg {
  display: block;
  flex: 0 0 auto;
}

.page-about__gauge-arc {
  animation: page-about-gauge-arc 3.2s ease-in-out infinite;
}

.page-about__gauge-needle {
  transform-box: view-box;
  transform-origin: 80px 78px;
  animation: page-about-needle 3.2s ease-in-out infinite alternate;
}

.page-about__gauge-label {
  margin: 0;
  color: var(--color-gray);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  line-height: 1.5;
}

@keyframes page-about-needle {
  from {
    transform: rotate(-12deg);
  }
  to {
    transform: rotate(8deg);
  }
}

@keyframes page-about-gauge-arc {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.55;
  }
}

.page-about__version {
  padding: var(--space-3);
  border: var(--line-green);
  border-left: 3px solid var(--color-orange);
  border-radius: var(--radius);
  background: #121512;
}

.page-about__version-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-about__version-text {
  margin: 0;
  color: var(--color-silver);
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-about__cap-chart {
  margin: 0;
}

.page-about__cap-chart img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--line-silver);
  border-radius: var(--radius);
  box-shadow: var(--shadow-panel);
}

.page-about__cap-chart figcaption {
  margin-top: var(--space-2);
  color: var(--color-gray);
  font-family: var(--font-data);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* Team */
.page-about__team-grid {
  display: grid;
  gap: var(--space-4);
}

.page-about__team-rows {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.page-about__team-row {
  padding: var(--space-3);
  border: var(--line-silver);
  border-radius: var(--radius);
  background: var(--color-gray-dark);
  transition: border-color 0.2s, transform 0.2s;
}

.page-about__team-row:hover {
  border-color: rgba(255, 107, 0, 0.5);
  transform: translateY(-3px);
}

.page-about__team-row-value {
  display: block;
  color: var(--color-orange);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
}

.page-about__team-row-label {
  display: block;
  margin-top: 6px;
  color: var(--color-gray);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}

.page-about__team-values {
  display: grid;
  gap: 10px;
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
}

.page-about__team-values li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  color: var(--color-silver);
  font-size: 0.92rem;
  line-height: 1.5;
}

.page-about__team-values .data-font {
  min-width: 20px;
  color: var(--color-green);
  font-weight: 700;
}

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

.page-about__team-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--line-silver);
  border-radius: var(--radius);
  box-shadow: var(--shadow-panel);
}

.page-about__team-figure figcaption {
  margin-top: 10px;
  color: var(--color-gray);
  font-family: var(--font-data);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* Closing */
.page-about__closing {
  padding: var(--space-5) 0;
}

.page-about__closing-band {
  position: relative;
  overflow: hidden;
  padding: var(--space-5) var(--space-3);
  border: var(--line-green);
  border-radius: var(--radius);
  background: linear-gradient(125deg, #0e110e 0%, #151915 55%, #0d100d 100%);
}

.page-about__closing-band::after {
  content: "";
  position: absolute;
  top: -65%;
  right: -12%;
  width: 45%;
  height: 200%;
  background: linear-gradient(105deg, transparent, rgba(0, 255, 136, 0.12), transparent);
  transform: rotate(14deg);
  pointer-events: none;
}

.page-about__closing-band .section-title,
.page-about__closing-band .paragraph,
.page-about__closing-links {
  position: relative;
  z-index: 1;
}

.page-about__closing-band .section-title {
  margin-bottom: var(--space-2);
}

.page-about__closing-band .paragraph {
  max-width: 560px;
  margin-bottom: var(--space-4);
}

.page-about__closing-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

@media (min-width: 768px) {
  .page-about__hero {
    min-height: 620px;
  }

  .page-about__mission-grid {
    grid-template-columns: 1.4fr 0.6fr;
    align-items: start;
    gap: var(--space-5);
  }

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

  .page-about__timeline {
    padding: 12px 0 0 0;
  }

  .page-about__timeline::before {
    left: 219px;
  }

  .page-about__timeline-item {
    display: grid;
    grid-template-columns: 220px 1fr;
    column-gap: var(--space-4);
    padding-bottom: var(--space-5);
  }

  .page-about__timeline-item::before {
    top: 14px;
    left: 214px;
  }

  .page-about__timeline-year {
    margin: 0;
    padding-top: 8px;
    text-align: right;
    font-size: 1.6rem;
  }

  .page-about__cap-grid {
    grid-template-columns: 1fr 1.08fr;
    align-items: stretch;
    gap: var(--space-5);
  }

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

  .page-about__team-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
    gap: var(--space-5);
  }

  .page-about__closing-band {
    padding: var(--space-5) var(--space-5);
  }
}