.page-about {
  --sec-gap: clamp(64px, 8vw, 120px);
  --label-w: 300px;
  position: relative;
  overflow-x: hidden;
}

.page-about .num {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

/* ============ HERO ============ */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(88px, 12vw, 152px) 0 clamp(52px, 7vw, 88px);
  background: var(--ink);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: -20%;
  right: -24%;
  width: 88%;
  height: 132%;
  background: linear-gradient(148deg, var(--grad-from), var(--grad-to) 76%);
  opacity: 0.42;
  clip-path: polygon(16% 0, 100% 0, 100% 84%, 0 100%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--hair) 1px, transparent 1px),
    linear-gradient(to bottom, var(--hair) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 76%);
  mask-image: linear-gradient(180deg, #000, transparent 76%);
  pointer-events: none;
}

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

.page-about .about-hero .breadcrumb {
  margin-bottom: clamp(28px, 4vw, 52px);
}

.page-about .about-hero h1 {
  font-family: var(--font-narrow);
  font-weight: 300;
  font-size: clamp(34px, 6vw, 88px);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--mist);
  margin: 16px 0 0;
  max-width: 17ch;
  transform: rotate(-1deg);
  transform-origin: left bottom;
}

.page-about .about-hero__lede {
  margin: clamp(20px, 3vw, 34px) 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--slate);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(32px, 5vw, 56px) 0 0;
  max-width: 760px;
  list-style: none;
  padding: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-m);
  overflow: hidden;
  background: var(--line-soft);
}

.page-about .about-hero__fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px;
  background: rgba(10, 21, 34, 0.78);
}

.page-about .about-hero__fact-num {
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1;
  color: var(--neon);
  letter-spacing: -0.01em;
}

.page-about .about-hero__fact-label {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--slate);
}

/* ============ SECTION SHELL ============ */
.page-about .about-sec {
  padding: clamp(48px, 6vw, 84px) 0;
}

.page-about .about-sec__inner {
  display: grid;
  gap: clamp(24px, 3.5vw, 44px);
}

.page-about .about-sec__label {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .about-sec__num {
  display: block;
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(54px, 8vw, 104px);
  line-height: 0.82;
  letter-spacing: -0.04em;
  color: rgba(79, 182, 200, 0.16);
  margin-bottom: 6px;
  user-select: none;
}

.page-about .about-sec__title {
  font-family: var(--font-narrow);
  font-weight: 300;
  font-size: clamp(24px, 3.4vw, 42px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--mist);
  margin: 4px 0 0;
  max-width: 18ch;
}

.page-about .about-sec__body {
  display: flex;
  flex-direction: column;
  gap: clamp(24px, 3vw, 40px);
  min-width: 0;
}

/* ============ INTRO NOTE ============ */
.page-about .about-note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px 26px;
  padding: 20px 22px;
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--neon);
  border-radius: 0 var(--r-m) var(--r-m) 0;
  background: linear-gradient(100deg, rgba(46, 124, 140, 0.16), rgba(16, 33, 47, 0.5) 62%);
}

.page-about .about-note__line {
  margin: 0;
  flex: 1 1 280px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--mist);
}

/* ============ TEAM RING ============ */
.page-about .about-team {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
}

.page-about .about-team__chart {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(22px, 3vw, 32px);
}

.page-about .about-ring__chart {
  position: relative;
  width: min(268px, 68vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: conic-gradient(
    var(--neon) 0 39.3%,
    var(--aqua) 39.3% 59%,
    var(--heat) 59% 73.8%,
    var(--alert) 73.8% 78.7%,
    var(--jade) 78.7% 100%
  );
  box-shadow: 0 0 0 1px var(--line-soft), 0 24px 60px -28px rgba(79, 182, 200, 0.5);
  flex: 0 0 auto;
}

.page-about .about-ring__chart::after {
  content: "";
  position: absolute;
  inset: 26%;
  border-radius: 50%;
  background: var(--ink);
  box-shadow: inset 0 0 0 1px var(--line);
}

.page-about .about-ring__center {
  position: absolute;
  z-index: 2;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  pointer-events: none;
}

.page-about .about-ring__center b {
  font-size: clamp(30px, 6vw, 40px);
  line-height: 1;
  color: var(--mist);
}

.page-about .about-ring__center small {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--slate);
}

.page-about .about-ring__legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  width: 100%;
}

.page-about .about-ring__item {
  display: grid;
  grid-template-columns: 10px 1fr auto;
  grid-template-areas:
    "dot role count"
    ". duty duty";
  align-items: center;
  gap: 4px 10px;
  padding: 12px 14px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-s);
  background: var(--ink-2);
  transition: border-color 150ms var(--ease), transform 150ms var(--ease);
}

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

.page-about .about-ring__item i {
  grid-area: dot;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--slate);
}

.page-about .about-ring__item--edit i { background: var(--neon); }
.page-about .about-ring__item--eng i { background: var(--aqua); }
.page-about .about-ring__item--video i { background: var(--heat); }
.page-about .about-ring__item--check i { background: var(--alert); }
.page-about .about-ring__item--ops i { background: var(--jade); }

.page-about .about-ring__role {
  grid-area: role;
  font-size: 15px;
  color: var(--mist);
}

.page-about .about-ring__count {
  grid-area: count;
  font-size: 18px;
  color: var(--neon);
}

.page-about .about-ring__duty {
  grid-area: duty;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--slate);
}

.page-about .about-team__figure {
  margin: 0;
  border-radius: var(--r-l);
  overflow: hidden;
}

.page-about .about-team__figure img,
.page-about .about-source__figure img,
.page-about .about-city img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ============ FLOW ============ */
.page-about .about-scale {
  display: block;
  width: 100%;
  height: 34px;
  margin-bottom: -8px;
  opacity: 0.9;
}

.page-about .about-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-flow__node {
  position: relative;
  padding: 20px 20px 20px 22px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-m);
  background: var(--ink-2);
  overflow: hidden;
}

.page-about .about-flow__node::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 42px;
  height: 2px;
  background: linear-gradient(90deg, var(--neon), transparent);
}

.page-about .about-flow__time {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--neon);
  border: 1px solid rgba(200, 255, 77, 0.35);
  border-radius: var(--pill);
  padding: 3px 10px;
}

.page-about .about-flow__name {
  margin: 12px 0 6px;
  font-size: 17px;
  font-weight: 600;
  color: var(--mist);
}

.page-about .about-flow__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

/* ============ SOURCE ============ */
.page-about .about-source__figure {
  margin: 0;
  border-radius: var(--r-l);
  overflow: hidden;
}

.page-about .about-source__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-source__card {
  padding: 20px;
  border-radius: var(--r-m);
  border: 1px solid var(--line-soft);
  background: linear-gradient(140deg, rgba(46, 124, 140, 0.16), rgba(16, 33, 47, 0.7));
}

.page-about .about-source__k {
  display: block;
  font-size: 26px;
  line-height: 1;
  color: var(--aqua);
  margin-bottom: 10px;
}

.page-about .about-source__card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--mist);
}

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

/* ============ FOUR LINES ============ */
.page-about .about-lines {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: lines;
}

.page-about .about-lines__item {
  position: relative;
  padding: 22px 20px 20px;
  border-radius: var(--r-m);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--jade);
  background: var(--ink-2);
  transition: border-left-color 150ms var(--ease), transform 150ms var(--ease);
}

.page-about .about-lines__item:hover {
  border-left-color: var(--neon);
  transform: translateY(-2px);
}

.page-about .about-lines__idx {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--slate);
}

.page-about .about-lines__title {
  margin: 10px 0 10px;
  font-family: var(--font-narrow);
  font-weight: 400;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--mist);
}

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

.page-about .about-lines__link {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--aqua);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 182, 200, 0.35);
  padding-bottom: 2px;
  transition: color 150ms var(--ease), border-color 150ms var(--ease);
}

.page-about .about-lines__link:hover {
  color: var(--neon);
  border-color: var(--neon);
}

/* ============ ECO ============ */
.page-about .about-eco {
  display: grid;
  gap: 12px;
}

.page-about .about-eco__col {
  padding: 22px 20px;
  border-radius: var(--r-m);
  border: 1px solid var(--line-soft);
  background: var(--ink-2);
}

.page-about .about-eco__col .eyebrow {
  margin: 0;
}

.page-about .about-eco__title {
  margin: 10px 0 10px;
  font-size: 19px;
  font-weight: 600;
  color: var(--mist);
}

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

.page-about .about-eco__cta {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .about-eco__cta a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 255, 77, 0.4);
}

.page-about .about-eco__cta a:hover {
  color: var(--aqua);
  border-color: var(--aqua);
}

/* ============ CITY FIGURE ============ */
.page-about .about-city {
  margin: 0;
  border-radius: var(--r-l);
  overflow: hidden;
}

/* ============ YEARS ============ */
.page-about .about-years {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  position: relative;
}

.page-about .about-years::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 13px;
  width: 1px;
  background: linear-gradient(180deg, var(--neon), var(--aqua) 40%, var(--jade) 80%, transparent);
}

.page-about .about-years__item {
  position: relative;
  padding: 0 0 28px 44px;
}

.page-about .about-years__item::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--neon);
  transition: background 150ms var(--ease), transform 150ms var(--ease);
}

.page-about .about-years__item:hover::before {
  background: var(--neon);
  transform: scale(1.15);
}

.page-about .about-years__year {
  display: block;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--aqua);
}

.page-about .about-years__title {
  margin: 10px 0 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--mist);
}

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

/* ============ VOW ============ */
.page-about .about-vow {
  position: relative;
  margin-top: clamp(48px, 6vw, 84px);
  padding: clamp(56px, 8vw, 108px) 0;
  background: linear-gradient(160deg, rgba(46, 124, 140, 0.2), var(--ink) 58%);
  border-top: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-about .about-vow__inner {
  position: relative;
  max-width: 760px;
}

.page-about .about-vow__num {
  position: absolute;
  top: -46px;
  right: 0;
  font-family: var(--font-data);
  font-size: clamp(96px, 18vw, 210px);
  font-weight: 700;
  line-height: 0.8;
  color: rgba(79, 182, 200, 0.09);
  pointer-events: none;
  user-select: none;
}

.page-about .about-vow__title {
  position: relative;
  margin: 14px 0 22px;
  font-family: var(--font-narrow);
  font-weight: 300;
  font-size: clamp(26px, 4.4vw, 54px);
  line-height: 1.14;
  letter-spacing: -0.025em;
  color: var(--mist);
  max-width: 20ch;
}

.page-about .about-vow__prose p {
  color: var(--slate);
}

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

/* ============ RESPONSIVE ============ */
@media (min-width: 560px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-source__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-lines {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-eco {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about .about-team {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: center;
  }

  .page-about .about-team__chart {
    align-items: stretch;
  }

  .page-about .about-ring__chart {
    margin-inline: auto;
  }

  .page-about .about-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .page-about .about-sec__inner {
    grid-template-columns: var(--label-w) minmax(0, 1fr);
    column-gap: clamp(36px, 4.5vw, 76px);
    align-items: start;
  }

  .page-about .about-sec__label {
    position: sticky;
    top: calc(var(--bar-h) + 32px);
  }

  .page-about .about-sec__title {
    font-size: clamp(22px, 2.2vw, 32px);
  }

  .page-about .about-years {
    padding-left: 6px;
  }
}

@media (min-width: 1200px) {
  .page-about .about-hero h1 {
    max-width: 15ch;
  }

  .page-about .about-lines {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-lines__item {
    padding: 26px 22px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-ring__item,
  .page-about .about-lines__item,
  .page-about .about-years__item::before {
    transition: none;
  }

  .page-about .about-ring__item:hover,
  .page-about .about-lines__item:hover {
    transform: none;
  }

  .page-about .about-years__item:hover::before {
    transform: none;
  }
}