.page-about {
  --about-cut: 14px;
  --about-hair: rgba(47, 227, 224, 0.35);
  background: var(--ink);
  color: var(--snow);
  overflow-x: hidden;
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--sp) + 40px) 0 clamp(30px, 5vw, 58px);
  background:
    radial-gradient(110% 90% at 88% -10%, rgba(166, 107, 255, 0.20), transparent 62%),
    radial-gradient(90% 80% at -10% 110%, rgba(47, 227, 224, 0.16), transparent 60%),
    var(--ink);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(0deg, rgba(237, 242, 255, 0.045) 0 1px, transparent 1px 7px);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -16%;
  bottom: -52%;
  width: 58%;
  height: 128%;
  transform: rotate(-14deg);
  background: linear-gradient(160deg, rgba(13, 58, 56, 0.85), rgba(11, 16, 48, 0));
  border-left: 1px solid rgba(47, 227, 224, 0.22);
  clip-path: polygon(16% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

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

.page-about .about-hero__kicker {
  margin: 22px 0 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.page-about .about-hero__lead {
  margin: 20px 0 0;
  max-width: 48ch;
  color: var(--fog);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
}

.page-about .about-hero__stats {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-hero__stat {
  background: rgba(11, 16, 48, 0.88);
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-hero__stat .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 700;
  color: var(--snow);
  letter-spacing: -0.01em;
}

.page-about .about-hero__stat .stat__value em {
  font-style: normal;
  font-size: 0.55em;
  color: var(--amber);
  margin-left: 2px;
}

.page-about .about-hero__stat .stat__label {
  font-size: 12px;
  line-height: 1.5;
  color: var(--fog);
}

/* ---------- Shell ---------- */
.page-about .about-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding-top: clamp(24px, 4vw, 48px);
  padding-bottom: var(--sp);
}

.page-about .about-rail {
  display: none;
}

.page-about .about-flow {
  display: grid;
  gap: 14px;
  min-width: 0;
}

/* ---------- Section band ---------- */
.page-about .about-sec {
  position: relative;
  scroll-margin-top: 96px;
  padding: clamp(26px, 4.5vw, 48px) clamp(18px, 3vw, 42px);
  background: var(--ink);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--about-cut)) 0, 100% var(--about-cut), 100% 100%, 0 100%);
}

.page-about .about-sec--teal {
  background: linear-gradient(150deg, var(--deep-teal), #0A2C2B 70%);
  border-color: rgba(47, 227, 224, 0.20);
}

.page-about .about-sec--panel {
  background: var(--panel);
  border-color: var(--line);
}

/* ---------- Chapter head ---------- */
.page-about .chapter {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 6px;
  align-items: start;
  margin: 0 0 26px;
}

.page-about .chapter__num {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(30px, 8vw, 58px);
  line-height: 0.85;
  color: var(--violet);
  letter-spacing: -0.02em;
}

.page-about .chapter__kicker {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--fog);
}

.page-about .chapter__title {
  grid-column: 2;
  grid-row: 2;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 3.6vw, 34px);
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--snow);
}

.page-about .chapter__rule {
  grid-column: 2;
  grid-row: 3;
  display: block;
  width: 48px;
  height: 2px;
  margin-top: 12px;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--about-hair);
}

/* ---------- Text ---------- */
.page-about .about-prose p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--snow);
  max-width: 42ch;
}

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

.page-about .about-sub {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.4;
  color: var(--cyan);
}

.page-about .about-note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--fog);
  max-width: 52ch;
}

.page-about .about-points {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-points li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--fog);
}

.page-about .about-points li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-about .about-points .mono {
  color: var(--snow);
  margin-right: 6px;
}

/* ---------- Figures ---------- */
.page-about .about-figure {
  margin: 26px 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--mist);
}

.page-about .about-figure--archive img {
  filter: saturate(0.5) contrast(1.05);
}

.page-about .about-figure--phone {
  max-width: 320px;
}

.page-about .about-figure--team img {
  max-height: 320px;
}

.page-about .media-frame__caption {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--fog);
}

/* ---------- Section 01 split ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
}

/* ---------- Milestones ---------- */
.page-about .ms-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-about .ms {
  position: relative;
  display: grid;
  gap: 7px;
  padding: 22px 0 22px 30px;
  border-top: 1px solid rgba(47, 227, 224, 0.18);
}

.page-about .ms:first-child {
  border-top: 0;
  padding-top: 6px;
}

.page-about .ms::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 30px;
  width: 9px;
  height: 9px;
  background: var(--violet);
  transform: rotate(45deg);
  box-shadow: 0 0 12px rgba(166, 107, 255, 0.6);
}

.page-about .ms:first-child::before {
  top: 14px;
}

.page-about .ms::after {
  content: "";
  position: absolute;
  left: 10px;
  top: 41px;
  bottom: -1px;
  width: 1px;
  background: rgba(47, 227, 224, 0.20);
}

.page-about .ms:first-child::after {
  top: 25px;
}

.page-about .ms:last-child::after {
  display: none;
}

.page-about .ms__era {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-about .ms__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 2.4vw, 21px);
  line-height: 1.35;
  color: var(--snow);
}

.page-about .ms__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--fog);
  max-width: 52ch;
}

/* ---------- Compare ---------- */
.page-about .about-compare {
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid rgba(47, 227, 224, 0.18);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
}

.page-about .about-compare__text p {
  max-width: 46ch;
}

/* ---------- Scale grid ---------- */
.page-about .scale-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .scale-cell {
  padding: 18px 15px 20px;
  background: rgba(21, 26, 46, 0.85);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--about-cut)) 0, 100% var(--about-cut), 100% 100%, 0 100%);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-about .scale-cell:hover,
.page-about .scale-cell:focus-within {
  border-color: var(--cyan);
  background: rgba(30, 37, 66, 0.92);
  box-shadow: 0 0 22px rgba(47, 227, 224, 0.14);
}

.page-about .scale-cell__value {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1;
  color: var(--snow);
  letter-spacing: -0.02em;
}

.page-about .scale-cell__value span {
  font-size: 0.5em;
  color: var(--cyan);
  margin-left: 3px;
  vertical-align: 0.18em;
}

.page-about .scale-cell__label {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--fog);
}

/* ---------- Growth chart ---------- */
.page-about .growth-wrap {
  margin-top: 34px;
  padding: 22px 16px 12px;
  background: rgba(11, 16, 48, 0.6);
  border: 1px solid var(--line);
  overflow-x: auto;
}

.page-about .growth {
  display: block;
  width: 100%;
  min-width: 460px;
  height: auto;
}

/* ---------- Team ---------- */
.page-about .team-grid {
  margin-top: 26px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-about .team-card {
  padding: 20px 18px 22px;
  background: var(--ink);
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-about .team-card:hover {
  border-color: var(--cyan);
}

.page-about .team-card__count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-about .team-card__name {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.3;
  color: var(--snow);
}

.page-about .team-card__desc {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--fog);
}

/* ---------- Flow ---------- */
.page-about .flow {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  counter-reset: none;
}

.page-about .flow__step {
  position: relative;
  padding: 18px 18px 20px;
  background: rgba(11, 16, 48, 0.55);
  border: 1px solid rgba(47, 227, 224, 0.22);
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-about .flow__step:hover {
  border-color: var(--cyan);
  background: rgba(11, 16, 48, 0.85);
}

.page-about .flow__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-about .flow__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.35;
  color: var(--snow);
}

.page-about .flow__body {
  margin: 9px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--fog);
}

/* ---------- Next links ---------- */
.page-about .about-next {
  margin-top: 38px;
  padding-top: 30px;
  border-top: 1px solid rgba(47, 227, 224, 0.22);
}

.page-about .about-next__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 3.2vw, 28px);
  line-height: 1.3;
  color: var(--snow);
}

.page-about .about-next__lead {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--fog);
  max-width: 46ch;
}

.page-about .about-next__links {
  margin-top: 20px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-about .about-next__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 16px;
  border: 1px solid var(--line);
  color: var(--snow);
  text-decoration: none;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  border-color: var(--cyan);
  background: rgba(30, 37, 66, 0.7);
}

.page-about .about-next__link--primary {
  border-color: var(--amber);
  background: rgba(74, 27, 46, 0.5);
}

.page-about .about-next__link--primary:hover,
.page-about .about-next__link--primary:focus-visible {
  border-color: var(--amber);
  background: rgba(74, 27, 46, 0.75);
}

.page-about .about-next__link-k {
  flex: none;
  min-width: 44px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-about .about-next__link--primary .about-next__link-k {
  color: var(--amber);
}

.page-about .about-next__link-t {
  font-size: 15px;
  line-height: 1.5;
}

/* ---------- Desktop ---------- */
@media (min-width: 720px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 34px;
    align-items: start;
  }

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

  .page-about .ms {
    grid-template-columns: 128px minmax(0, 1fr);
    column-gap: 26px;
    padding-left: 34px;
  }

  .page-about .ms__era {
    grid-column: 1;
    grid-row: 1;
    padding-top: 3px;
  }

  .page-about .ms__title {
    grid-column: 2;
    grid-row: 1;
  }

  .page-about .ms__body {
    grid-column: 2;
    grid-row: 2;
  }

  .page-about .about-compare {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 34px;
    align-items: start;
  }

  .page-about .about-compare .about-figure {
    margin-top: 0;
  }

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

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

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

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

  .page-about .about-next__link--primary {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1000px) {
  .page-about .about-shell {
    grid-template-columns: 188px minmax(0, 1fr);
    column-gap: 46px;
    align-items: start;
  }

  .page-about .about-rail {
    display: block;
    position: sticky;
    top: 104px;
    padding-left: 18px;
    border-left: 1px solid var(--line);
  }

  .page-about .about-rail__title {
    margin: 0 0 16px;
    font-size: 12px;
    letter-spacing: 0.18em;
    color: var(--fog);
  }

  .page-about .about-rail__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 2px;
  }

  .page-about .about-rail__link {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 9px 10px 9px 12px;
    color: var(--fog);
    text-decoration: none;
    border-left: 2px solid transparent;
    transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
  }

  .page-about .about-rail__link:hover,
  .page-about .about-rail__link:focus-visible {
    color: var(--snow);
    border-left-color: var(--cyan);
    background: rgba(30, 37, 66, 0.55);
  }

  .page-about .about-rail__num {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--violet);
  }

  .page-about .about-rail__label {
    font-size: 13px;
    line-height: 1.4;
  }

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

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

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

  .page-about .about-next__link--primary {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: 0ms !important;
  }
}