.page-about {
  --about-hair: 1px solid rgba(201, 162, 74, 0.32);
  --about-soft: 1px solid rgba(142, 155, 196, 0.2);
  background: var(--ind-base);
  color: var(--paper);
  overflow-x: clip;
}

.page-about .breadcrumb {
  padding-top: clamp(1.1rem, 2.6vw, 1.9rem);
}

.page-about .about-hero {
  position: relative;
  padding-bottom: clamp(2rem, 5vw, 3.5rem);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -18%;
  right: -14%;
  width: 52vw;
  height: 52vw;
  max-width: 640px;
  max-height: 640px;
  background: radial-gradient(circle at 50% 50%, rgba(201, 162, 74, 0.16), transparent 68%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: start;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.15rem, 6.2vw, 3.9rem);
  line-height: 1.14;
  letter-spacing: -0.015em;
  margin: 0.7rem 0 1.1rem;
  color: var(--paper);
}

.page-about .about-hero .lede {
  max-width: 54ch;
  color: rgba(244, 239, 228, 0.82);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.4rem;
  margin-top: clamp(1.4rem, 3vw, 2rem);
}

.page-about .about-hero__textlink {
  color: var(--mist);
  text-decoration: none;
  font-size: 0.9375rem;
  border-bottom: 1px solid rgba(142, 155, 196, 0.45);
  padding-bottom: 2px;
  transition: color 180ms var(--ease-out), border-color 180ms var(--ease-out);
}

.page-about .about-hero__textlink:hover,
.page-about .about-hero__textlink:focus-visible {
  color: var(--gold-hi);
  border-bottom-color: var(--gold);
}

.page-about .about-seal {
  position: relative;
  width: min(268px, 68vw);
  aspect-ratio: 1 / 1;
  margin: 0.4rem auto 0;
  transform: rotate(-6deg);
  border: 2px solid rgba(201, 162, 74, 0.55);
  border-radius: 4px;
  display: grid;
  place-items: center;
  background: linear-gradient(155deg, rgba(36, 53, 107, 0.92), rgba(16, 26, 56, 0.62));
  box-shadow: inset 0 0 0 1px rgba(232, 211, 160, 0.16), 0 28px 64px rgba(10, 15, 30, 0.55);
}

.page-about .about-seal::before {
  content: "";
  position: absolute;
  inset: 9px;
  border-radius: 50%;
  background: repeating-conic-gradient(from 0deg, rgba(201, 162, 74, 0.55) 0deg 0.9deg, transparent 0.9deg 9deg);
  -webkit-mask: radial-gradient(circle, transparent 61%, #000 62%);
  mask: radial-gradient(circle, transparent 61%, #000 62%);
  opacity: 0.85;
  pointer-events: none;
}

.page-about .about-seal::after {
  content: "";
  position: absolute;
  inset: 18px;
  border: 1px solid rgba(232, 211, 160, 0.34);
  pointer-events: none;
}

.page-about .about-seal__inner {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  gap: 0.15rem;
  text-align: center;
  color: var(--gold-hi);
}

.page-about .about-seal__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.32em;
  color: rgba(232, 211, 160, 0.78);
}

.page-about .about-seal__version {
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 6vw, 2.5rem);
  letter-spacing: 0.04em;
  color: var(--gold);
  line-height: 1;
}

.page-about .about-seal__label {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  letter-spacing: 0.24em;
  color: var(--paper);
}

.page-about .about-seal__meta {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: rgba(142, 155, 196, 0.9);
  margin-top: 0.35rem;
}

.page-about .about-head {
  max-width: 60ch;
}

.page-about .about-head .lede {
  color: rgba(244, 239, 228, 0.76);
}

.page-about .about-timeline__figure {
  margin-top: clamp(1.8rem, 4vw, 2.8rem);
}

.page-about .about-timeline__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 2.4rem);
  margin-top: clamp(2rem, 4vw, 3rem);
}

.page-about .about-years__eyebrow {
  margin-bottom: 0.5rem;
}

.page-about .about-years__list {
  list-style: none;
  margin: 0;
  padding: 0.1rem 0 0.6rem;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-years__link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  white-space: nowrap;
  padding: 0.45rem 0.85rem;
  border: var(--about-hair);
  border-radius: 999px;
  text-decoration: none;
  color: rgba(244, 239, 228, 0.8);
  font-size: 0.8125rem;
  transition: color 180ms var(--ease-out), border-color 180ms var(--ease-out), background 180ms var(--ease-out);
}

.page-about .about-years__link:hover,
.page-about .about-years__link:focus-visible {
  color: var(--ind-base);
  background: var(--gold);
  border-color: var(--gold);
}

.page-about .about-years__num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-about .about-years__link:hover .about-years__num,
.page-about .about-years__link:focus-visible .about-years__num {
  color: var(--ind-base);
}

.page-about .about-years__note {
  margin: 0.6rem 0 0;
  font-size: 0.8125rem;
  color: var(--mist);
}

.page-about .about-era-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-era {
  position: relative;
  padding-left: clamp(1rem, 3vw, 1.9rem);
  border-left: 1px solid rgba(201, 162, 74, 0.32);
  padding-bottom: clamp(1.4rem, 3vw, 2.4rem);
}

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

.page-about .about-era::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.35rem;
  width: 11px;
  height: 11px;
  margin-left: -6px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px var(--ind-base), 0 0 0 5px rgba(201, 162, 74, 0.5);
}

.page-about .about-era__card {
  background: var(--ind-deep);
  border: var(--about-soft);
  border-left: 2px solid rgba(201, 162, 74, 0.5);
  padding: clamp(1.1rem, 2.6vw, 1.9rem);
  box-shadow: 0 3px 0 rgba(244, 239, 228, 0.1), 0 6px 0 rgba(244, 239, 228, 0.05), 0 22px 48px rgba(10, 15, 30, 0.4);
}

.page-about .about-era__title {
  font-family: var(--font-sans);
  font-size: clamp(1.1rem, 2.4vw, 1.4rem);
  font-weight: 600;
  line-height: 1.4;
  margin: 0.35rem 0 0.7rem;
  color: var(--paper);
}

.page-about .about-era__before {
  margin: 0 0 0.6rem;
  color: rgba(244, 239, 228, 0.72);
  font-size: 0.9375rem;
  line-height: 1.75;
  padding-left: 1.5rem;
  position: relative;
}

.page-about .about-era__before::before {
  content: "困";
  position: absolute;
  left: 0;
  top: 0.1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--cinnabar);
}

.page-about .about-era__after {
  margin: 0;
  color: rgba(244, 239, 228, 0.88);
  font-size: 0.9375rem;
  line-height: 1.75;
  padding-left: 1.5rem;
  position: relative;
}

.page-about .about-era__after::before {
  content: "解";
  position: absolute;
  left: 0;
  top: 0.1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--jade);
}

.page-about .about-tiers .section-title {
  color: var(--ink);
}

.page-about .about-tiers .eyebrow {
  color: rgba(10, 15, 30, 0.55);
}

.page-about .about-tiers .lede {
  color: rgba(10, 15, 30, 0.75);
}

.page-about .about-tiers__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(1.6rem, 3.5vw, 2.4rem);
  background: rgba(10, 15, 30, 0.16);
  border: 1px solid rgba(10, 15, 30, 0.16);
}

.page-about .about-tier {
  padding: clamp(1.2rem, 3vw, 2rem);
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.page-about .about-tier--collect {
  background: rgba(79, 140, 134, 0.16);
  color: var(--ink);
}

.page-about .about-tier--cert {
  background: rgba(201, 162, 74, 0.28);
  color: var(--ink);
}

.page-about .about-tier--archive {
  background: var(--ind-base);
  color: var(--paper);
}

.page-about .about-tier__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: rgba(10, 15, 30, 0.55);
}

.page-about .about-tier--archive .about-tier__index {
  color: var(--gold);
}

.page-about .about-tier__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.page-about .about-tier--archive .about-tier__name {
  color: var(--gold-hi);
}

.page-about .about-tier__desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
}

.page-about .about-tier__list {
  list-style: none;
  margin: 0.2rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
  font-size: 0.875rem;
  line-height: 1.6;
}

.page-about .about-tier__list li {
  position: relative;
  padding-left: 1.1rem;
}

.page-about .about-tier__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.55;
}

.page-about .about-tiers__foot {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.4rem, 3vw, 2.2rem);
  margin-top: clamp(1.6rem, 3.5vw, 2.4rem);
  align-items: start;
}

.page-about .about-tiers__figure {
  margin: 0;
}

.page-about .about-tiers__note p {
  color: rgba(10, 15, 30, 0.82);
  font-size: 0.9375rem;
  line-height: 1.78;
  margin: 0.4rem 0 1.1rem;
}

.page-about .about-team__bars {
  margin-top: clamp(1.6rem, 3.5vw, 2.4rem);
  display: grid;
  gap: 0;
}

.page-about .about-bar {
  display: grid;
  gap: 0.5rem;
  padding: 1rem 0 1.1rem;
  border-top: var(--about-soft);
  transition: background 200ms var(--ease-out);
}

.page-about .about-bar:last-of-type {
  border-bottom: var(--about-soft);
}

.page-about .about-bar:hover {
  background: rgba(36, 53, 107, 0.32);
}

.page-about .about-bar__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.page-about .about-bar__name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--paper);
  letter-spacing: 0.02em;
}

.page-about .about-bar__num {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-about .about-bar__track {
  position: relative;
  height: 9px;
  background: rgba(142, 155, 196, 0.16);
  overflow: hidden;
}

.page-about .about-bar__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, rgba(201, 162, 74, 0.55), var(--gold-hi));
  transition: filter 200ms var(--ease-out);
}

.page-about .about-bar:hover .about-bar__fill {
  filter: brightness(1.15);
}

.page-about .about-bar__fill--editorial {
  width: 39%;
}

.page-about .about-bar__fill--review {
  width: 21%;
}

.page-about .about-bar__fill--tech {
  width: 21%;
}

.page-about .about-bar__fill--local {
  width: 18%;
}

.page-about .about-bar__desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(244, 239, 228, 0.72);
}

.page-about .about-team__foot {
  margin: clamp(1.2rem, 3vw, 1.8rem) 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--mist);
  max-width: 62ch;
}

.page-about .about-local .section-title {
  color: var(--ink);
}

.page-about .about-local .eyebrow {
  color: rgba(10, 15, 30, 0.55);
}

.page-about .about-local .lede {
  color: rgba(10, 15, 30, 0.75);
}

.page-about .about-local__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 3rem);
  align-items: start;
}

.page-about .about-local__figure {
  margin: 0;
}

.page-about .about-local__cities {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: clamp(1.1rem, 2.5vw, 1.6rem) 0;
  padding: 0;
}

.page-about .about-local__cities li {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  padding: 0.35rem 0.75rem;
  border: 1px solid rgba(79, 140, 134, 0.5);
  color: rgba(10, 15, 30, 0.8);
  background: rgba(79, 140, 134, 0.1);
}

.page-about .about-local__items {
  margin: 0 0 1rem;
  display: grid;
  gap: 0.9rem;
}

.page-about .about-local__items div {
  border-left: 2px solid rgba(201, 162, 74, 0.75);
  padding-left: 0.9rem;
}

.page-about .about-local__items dt {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--ink);
  margin-bottom: 0.2rem;
}

.page-about .about-local__items dd {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(10, 15, 30, 0.72);
}

.page-about .about-local__more {
  font-size: 0.875rem;
  line-height: 1.75;
  color: rgba(10, 15, 30, 0.68);
  margin: 0 0 1.2rem;
}

.page-about .about-habits__list {
  list-style: none;
  margin: clamp(1.6rem, 3.5vw, 2.4rem) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(142, 155, 196, 0.18);
  border: 1px solid rgba(142, 155, 196, 0.18);
}

.page-about .about-habits__list li {
  background: var(--ind-base);
  padding: clamp(1.1rem, 3vw, 1.9rem);
  display: grid;
  gap: 0.55rem;
}

.page-about .about-habits__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-about .about-habits__list h3 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(1.05rem, 2.4vw, 1.3rem);
  font-weight: 600;
  line-height: 1.45;
  color: var(--paper);
}

.page-about .about-habits__list p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: rgba(244, 239, 228, 0.74);
}

.page-about .about-cta {
  position: relative;
  padding-bottom: clamp(2.4rem, 6vw, 4rem);
}

.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.4rem, 3.5vw, 2.4rem);
  align-items: start;
  border: var(--about-hair);
  padding: clamp(1.4rem, 4vw, 2.8rem);
  background: linear-gradient(140deg, rgba(36, 53, 107, 0.62), rgba(22, 34, 74, 0.35));
}

.page-about .about-cta__body .lede {
  color: rgba(244, 239, 228, 0.78);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

@media (min-width: 720px) {
  .page-about .about-tiers__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-about .about-tier--cert {
    grid-column: span 2;
  }

  .page-about .about-local__items {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 1rem 1.4rem;
  }

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

  .page-about .about-habits__list li:last-child {
    grid-column: span 2;
  }

  .page-about .about-tiers__foot {
    grid-template-columns: minmax(0, 4fr) minmax(0, 5fr);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-about .about-seal {
    margin-top: 1.5rem;
  }

  .page-about .about-local__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    align-items: center;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 960px) {
  .page-about .about-timeline__layout {
    grid-template-columns: minmax(0, 2fr) minmax(0, 10fr);
    gap: clamp(2rem, 4vw, 3.4rem);
  }

  .page-about .about-years {
    position: sticky;
    top: 5.5rem;
    align-self: start;
  }

  .page-about .about-years__list {
    flex-direction: column;
    overflow: visible;
    gap: 0;
    padding: 0;
    border-left: 1px solid rgba(201, 162, 74, 0.25);
  }

  .page-about .about-years__link {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    margin-left: -1px;
    padding: 0.55rem 0 0.55rem 0.95rem;
    white-space: normal;
    align-items: flex-start;
    flex-direction: column;
    gap: 0.12rem;
  }

  .page-about .about-years__link:hover,
  .page-about .about-years__link:focus-visible {
    background: transparent;
    color: var(--gold-hi);
    border-left-color: var(--gold);
  }

  .page-about .about-years__link:hover .about-years__num,
  .page-about .about-years__link:focus-visible .about-years__num {
    color: var(--gold);
  }

  .page-about .about-years__name {
    font-size: 0.8125rem;
    color: var(--mist);
  }

  .page-about .about-era:nth-child(odd) .about-era__card {
    max-width: 64%;
  }

  .page-about .about-era:nth-child(even) .about-era__card {
    max-width: 86%;
    margin-left: auto;
  }

  .page-about .about-tiers__grid {
    grid-template-columns: 2fr 3fr 2fr;
  }

  .page-about .about-tier--cert {
    grid-column: auto;
  }

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

  .page-about .about-habits__list li:last-child {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-seal {
    transform: none;
  }

  .page-about .about-years__link,
  .page-about .about-bar__fill,
  .page-about .about-hero__textlink {
    transition: none;
  }
}