.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(20px, 3.5vw, 36px) clamp(40px, 6vw, 80px);
  border-bottom: 1px solid var(--ink-700);
  background:
    radial-gradient(120% 90% at 6% -10%, rgba(57, 242, 208, 0.12), transparent 58%),
    radial-gradient(80% 70% at 100% 110%, rgba(255, 122, 47, 0.12), transparent 62%),
    var(--ink-900);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  left: 44%;
  right: -20%;
  top: 10%;
  bottom: -32%;
  background: linear-gradient(140deg, rgba(57, 242, 208, 0.10), rgba(255, 122, 47, 0.05));
  transform: skewX(-14deg);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  align-items: end;
}

.page-about .about-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(34px, 7vw, 74px);
  line-height: 1.04;
  letter-spacing: -0.01em;
  color: var(--paper);
  text-wrap: balance;
}

.page-about .about-hero__lead {
  margin: 20px 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.78;
  color: var(--mist);
}

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

.page-about .about-hero__aside {
  display: grid;
  gap: 10px;
}

.page-about .about-fact {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: baseline;
  gap: 4px 6px;
  padding: 14px 16px;
  background: var(--ink-800);
  border-left: 2px solid var(--cyan);
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .about-fact:hover {
  background: var(--ink-700);
  border-left-color: var(--orange);
}

.page-about .about-fact__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 34px);
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-fact__unit {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--mist);
}

.page-about .about-fact__label {
  grid-column: 1 / -1;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

.page-about .about-index {
  overflow-x: auto;
  border-bottom: 1px solid rgba(30, 74, 63, 0.8);
  background: rgba(18, 51, 43, 0.55);
  scrollbar-width: none;
}

.page-about .about-index::-webkit-scrollbar {
  display: none;
}

.page-about .about-index__list {
  display: flex;
  gap: clamp(16px, 3vw, 36px);
  margin: 0;
  padding: 0;
  list-style: none;
  white-space: nowrap;
}

.page-about .about-index__link {
  display: inline-block;
  padding: 14px 0 11px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible,
.page-about .about-index__link.is-active {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-about .about-section {
  padding-block: clamp(44px, 7vw, 88px);
  border-bottom: 1px solid rgba(30, 74, 63, 0.55);
}

.page-about .about-section:last-child {
  border-bottom: 0;
}

.page-about .about-origin {
  display: grid;
  gap: 20px;
  margin-top: 32px;
}

.page-about .about-origin__note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  letter-spacing: 0.16em;
  color: var(--yellow);
}

.page-about .about-origin__body p {
  max-width: 64ch;
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-origin__body p:last-of-type {
  margin-bottom: 0;
}

.page-about .about-origin__tags {
  margin-top: 22px;
}

.page-about .about-timeline {
  position: relative;
  margin: 34px 0 0;
  padding: 0 0 0 28px;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(57, 242, 208, 0.14) 68%, transparent);
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: 28px;
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 5px;
  width: 10px;
  height: 10px;
  border: 2px solid var(--cyan);
  background: var(--ink-900);
  transform: rotate(45deg);
}

.page-about .about-timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-about .about-timeline__card h3 {
  margin: 6px 0 8px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.25;
  color: var(--paper);
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-figure {
  margin: 36px 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--ink-700);
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-figure--wide img {
  max-height: 430px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-about .about-figure--team img {
  max-height: 420px;
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}

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

.page-about .about-figure--process img {
  max-height: 460px;
}

.page-about .about-roles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 30px;
}

.page-about .about-role {
  padding: 18px 16px 20px;
  border: 1px solid var(--ink-700);
  border-top: 2px solid var(--ink-700);
  background: var(--ink-800);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .about-role:hover {
  transform: translateY(-3px);
  border-top-color: var(--orange);
}

.page-about .about-role__fig {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 0;
}

.page-about .about-role__num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.6vw, 38px);
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-role__unit {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--mist);
}

.page-about .about-role__name {
  margin: 12px 0 6px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .about-role__desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--mist);
}

.page-about .about-process {
  display: grid;
  gap: 30px;
  margin-top: 32px;
}

.page-about .about-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.page-about .about-steps__item {
  position: relative;
  padding: 0 0 22px 46px;
  margin-bottom: 22px;
  border-bottom: 1px dashed rgba(30, 74, 63, 0.9);
}

.page-about .about-steps__item:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.page-about .about-steps__item::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-about .about-steps__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.2vw, 24px);
  color: var(--paper);
}

.page-about .about-steps__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-eco {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 32px;
}

.page-about .about-eco__item {
  padding: 20px 18px 22px;
  background: linear-gradient(150deg, rgba(57, 242, 208, 0.08), rgba(18, 51, 43, 0.9));
  border: 1px solid var(--ink-700);
  border-left: 3px solid var(--cyan);
}

.page-about .about-eco__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(38px, 5.4vw, 56px);
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-eco__label {
  margin: 10px 0 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper);
}

.page-about .about-eco__desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--mist);
}

.page-about .about-eco__note {
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid rgba(30, 74, 63, 0.8);
}

.page-about .about-eco__note p {
  max-width: 68ch;
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-about .about-eco__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 242, 208, 0.45);
}

.page-about .about-eco__note a:hover {
  color: var(--orange);
  border-bottom-color: rgba(255, 122, 47, 0.6);
}

.page-about .about-belief {
  position: relative;
  margin-top: 32px;
  padding: clamp(26px, 4.6vw, 52px);
  background: linear-gradient(125deg, var(--ink-800), var(--ink-900) 72%);
  border: 1px solid var(--ink-700);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

.page-about .about-belief blockquote {
  margin: 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.8vw, 40px);
  line-height: 1.3;
  color: var(--paper);
}

.page-about .about-belief__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 30px;
}

.page-about .about-belief__item h3 {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .about-belief__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-belief__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 30px 0 0;
}

@media (min-width: 620px) {
  .page-about .about-roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-belief__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }
}

@media (min-width: 760px) {
  .page-about .about-timeline__item {
    display: grid;
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 28px;
    align-items: start;
  }

  .page-about .about-timeline__year {
    padding-top: 2px;
  }

  .page-about .about-timeline__card h3 {
    margin-top: 0;
  }

  .page-about .about-eco {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(272px, 340px);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .about-origin {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-origin__note {
    writing-mode: vertical-rl;
    padding-left: 14px;
    border-left: 2px solid var(--ink-700);
  }

  .page-about .about-process {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
    gap: clamp(32px, 5vw, 56px);
    align-items: start;
  }
}

@media (min-width: 1040px) {
  .page-about .about-roles {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-belief__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-fact,
  .page-about .about-role,
  .page-about .about-index__link {
    transition: none;
  }

  .page-about .about-role:hover {
    transform: none;
  }
}