.page-about {
  --about-gold: #F5C242;
  --about-red: #D32F2F;
  --about-night: #0A0E27;
  --about-paper: #FFF7E6;
  --about-porcelain: #F8F9FA;
  --about-violet: #7B5EA7;
  --about-teal: #1A8A7A;
  --about-coral: #FF6B6B;
  --about-ink: #111111;
  --about-gutter: clamp(1.25rem, 3vw, 2.5rem);
  --about-max: 78rem;
  --about-radius-lg: 2rem;
  --about-radius-md: 1.25rem;
  --about-radius-pill: 999px;
  --about-shadow-soft: 0 0.75rem 2rem rgba(10, 14, 39, 0.08);
  --about-shadow-gold: 0 0 2rem rgba(245, 194, 66, 0.18);
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  background: var(--about-night);
  color: var(--about-ink);
  overflow-x: hidden;
}

.page-about *,
.page-about *::before,
.page-about *::after {
  box-sizing: border-box;
}

.page-about .content-wrap {
  width: 100%;
  max-width: var(--about-max);
  margin-inline: auto;
  padding-inline: var(--about-gutter);
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-block: 1rem 0;
  font-size: 0.875rem;
  color: rgba(248, 249, 250, 0.72);
  background: transparent;
}

.page-about .breadcrumb a {
  color: var(--about-gold);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--about-coral);
  text-decoration: underline;
  text-underline-offset: 0.25em;
}

.page-about .eyebrow {
  display: inline-block;
  margin: 0 0 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--about-gold);
}

.page-about .display-title {
  margin: 0;
  font-family: "STKaiti", "Kaiti SC", "KaiTi", "Songti SC", serif;
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: 0.02em;
}

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

.page-about .display-title--center {
  text-align: center;
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--about-radius-pill);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.2;
  text-decoration: none;
  text-align: center;
  transition: transform 0.3s ease, background-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
}

.page-about .btn--ghost {
  color: var(--about-gold);
  background: transparent;
  border: 2px solid currentColor;
}

.page-about .btn--red {
  color: #FFFFFF;
  background: var(--about-red);
  border: 2px solid var(--about-red);
}

.page-about .btn:hover,
.page-about .btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--about-shadow-gold);
}

.page-about .btn--ghost:hover,
.page-about .btn--ghost:focus-visible {
  background: rgba(245, 194, 66, 0.12);
}

.page-about .btn--red:hover,
.page-about .btn--red:focus-visible {
  background: #B71C1C;
  border-color: #B71C1C;
}

.page-about .tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: var(--about-radius-pill);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.page-about .tag--red {
  color: #FFFFFF;
  background: var(--about-red);
}

.page-about .tag--teal {
  color: #FFFFFF;
  background: var(--about-teal);
}

.page-about .section--night {
  background: var(--about-night);
  color: #EAEDF2;
}

.page-about .section--paper {
  background: var(--about-paper);
  color: var(--about-ink);
}

.page-about .section--porcelain {
  background: var(--about-porcelain);
  color: var(--about-ink);
}

.page-about .section {
  position: relative;
  padding-block: clamp(3rem, 7vw, 6rem);
}

.page-about .section::before {
  content: "";
  display: block;
  height: 1px;
  width: 100%;
  max-width: calc(var(--about-max) - 2 * var(--about-gutter));
  margin-inline: auto;
  background: linear-gradient(90deg, transparent, rgba(245, 194, 66, 0.65), transparent);
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
}

.page-about .cols-annotated {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  align-items: start;
}

.page-about .section-note {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: rgba(17, 17, 17, 0.72);
  letter-spacing: 0.08em;
}

.page-about .section-note .page-about__step-label {
  font-family: var(--font-display, "STKaiti", "Kaiti SC", serif);
  font-size: 2rem;
  color: var(--about-gold);
  line-height: 1;
}

.page-about .section--night .section-note {
  color: rgba(248, 249, 250, 0.6);
}

.page-about .section--night .section-note .page-about__step-label {
  color: var(--about-gold);
}

.page-about .section--porcelain .section-note .page-about__step-label {
  color: var(--about-violet);
}

.page-about .section--paper .section-note .page-about__step-label {
  color: var(--about-red);
}

.page-about__hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  align-items: center;
  position: relative;
  padding-block: 2.5rem 1rem;
}

.page-about__hero-art {
  display: none;
}

.page-about__hero-title {
  color: #FFFFFF;
  font-size: clamp(2.25rem, 7vw, 4.5rem);
  position: relative;
  z-index: 1;
}

.page-about__hero-title::after {
  content: "";
  display: inline-block;
  width: 0.45em;
  height: 0.45em;
  border-radius: var(--about-radius-pill);
  background: var(--about-gold);
  margin-left: 0.2em;
  vertical-align: super;
  box-shadow: 0 0 0.8rem rgba(245, 194, 66, 0.65);
}

.page-about__hero-lead {
  margin: 1.25rem 0 2rem;
  max-width: 32rem;
  font-size: 1.05rem;
  line-height: 1.75;
  color: rgba(248, 249, 250, 0.82);
}

.page-about__hero-btn {
  margin-bottom: 1rem;
}

.page-about__hero-aside {
  display: flex;
  flex-direction: row;
  gap: 1rem;
  align-items: center;
  position: absolute;
  top: 1rem;
  right: var(--about-gutter);
  writing-mode: horizontal-tb;
}

.page-about__aside-line {
  font-family: "STKaiti", "Kaiti SC", serif;
  font-size: 0.75rem;
  color: rgba(245, 194, 66, 0.7);
  letter-spacing: 0.35em;
  text-transform: uppercase;
  border: 1px solid rgba(245, 194, 66, 0.35);
  border-radius: var(--about-radius-pill);
  padding: 0.25rem 0.65rem;
  background: rgba(10, 14, 39, 0.55);
}

.page-about__origin-main {
  display: grid;
  gap: 1.5rem;
}

.page-about__block-title {
  font-size: clamp(1.9rem, 4vw, 3rem);
  margin-bottom: 1.25rem;
}

.page-about__block-title--gold {
  color: var(--about-gold);
}

.page-about__origin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  align-items: start;
}

.page-about__origin-copy {
  display: grid;
  gap: 1rem;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--about-ink);
}

.page-about__image-card {
  margin: 0;
  border-radius: var(--about-radius-lg);
  overflow: hidden;
  background: #FFFFFF;
  border: 1px solid rgba(245, 194, 66, 0.35);
  box-shadow: var(--about-shadow-soft);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about__image-card:hover,
.page-about__image-card:focus-within {
  transform: translateY(-3px);
  box-shadow: var(--about-shadow-gold);
}

.page-about__image-card img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-about__image-card figcaption {
  padding: 0.9rem 1.1rem;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: rgba(17, 17, 17, 0.66);
  background: rgba(255, 247, 230, 0.72);
}

.page-about__image-card--dark {
  border-color: rgba(245, 194, 66, 0.28);
  background: rgba(10, 14, 39, 0.85);
}

.page-about__image-card--dark figcaption {
  color: rgba(248, 249, 250, 0.72);
  background: rgba(10, 14, 39, 0.9);
}

.page-about__image-card--wide img {
  object-fit: cover;
}

.page-about__timeline-section {
  overflow: hidden;
}

.page-about__timeline-section::after {
  content: "";
  position: absolute;
  right: -8rem;
  top: 4rem;
  width: 22rem;
  height: 22rem;
  border-radius: var(--about-radius-pill);
  background: radial-gradient(circle, rgba(245, 194, 66, 0.12) 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
}

.page-about__timeline-head {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1.25rem;
  max-width: 44rem;
  margin-bottom: 2.5rem;
}

.page-about__timeline-intro {
  margin: 0;
  font-size: 1rem;
  line-height: 1.75;
  color: rgba(248, 249, 250, 0.78);
  max-width: 34rem;
}

.page-about__timeline {
  position: relative;
  display: grid;
  gap: 2rem;
  padding-left: 1.5rem;
  margin: 0;
  list-style: none;
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  left: 0.375rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 3px;
  border-radius: var(--about-radius-pill);
  background: linear-gradient(180deg, rgba(245, 194, 66, 0.9), rgba(245, 194, 66, 0.35), rgba(26, 138, 122, 0.5));
}

.page-about__timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  padding: 1.5rem;
  background: rgba(10, 14, 39, 0.72);
  border: 1px solid rgba(245, 194, 66, 0.25);
  border-radius: var(--about-radius-lg);
  transition: background-color 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}

.page-about__timeline-item:hover,
.page-about__timeline-item:focus-within {
  background: rgba(15, 20, 48, 0.95);
  border-color: rgba(245, 194, 66, 0.65);
  transform: translateY(-2px);
}

.page-about__timeline-item--current {
  background: linear-gradient(150deg, rgba(245, 194, 66, 0.12), rgba(211, 47, 47, 0.08));
  border-color: rgba(245, 194, 66, 0.55);
}

.page-about__timeline-marker {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.page-about__timeline-dot {
  width: 0.9rem;
  height: 0.9rem;
  border-radius: var(--about-radius-pill);
  background: var(--about-gold);
  box-shadow: 0 0 0 0.3rem rgba(245, 194, 66, 0.25);
  flex-shrink: 0;
}

.page-about__timeline-version {
  font-family: "STKaiti", "Kaiti SC", serif;
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--about-gold);
}

.page-about__timeline-content {
  display: grid;
  gap: 0.65rem;
}

.page-about__timeline-content h3 {
  margin: 0;
  font-size: 1.3rem;
  color: #FFFFFF;
}

.page-about__timeline-content p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(248, 249, 250, 0.76);
}

.page-about__timeline-footer {
  margin-top: 2rem;
  text-align: center;
}

.page-about__values-main {
  padding-bottom: 0.5rem;
}

.page-about__values-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 2.25rem;
}

.page-about__value-card {
  padding: 1.75rem 1.5rem;
  border-radius: var(--about-radius-lg);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(245, 194, 66, 0.4);
  background: var(--about-paper);
  box-shadow: var(--about-shadow-soft);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about__value-card::after {
  content: "";
  position: absolute;
  right: -2.5rem;
  bottom: -2.5rem;
  width: 7rem;
  height: 7rem;
  border-radius: var(--about-radius-pill);
  background: radial-gradient(circle, rgba(211, 47, 47, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.page-about__value-card:hover,
.page-about__value-card:focus-within {
  transform: translateY(-3px);
  box-shadow: var(--about-shadow-gold);
}

.page-about__value-number {
  font-size: 2.25rem;
  font-family: "STKaiti", "Kaiti SC", serif;
  color: var(--about-red);
  opacity: 0.85;
  line-height: 1;
}

.page-about__value-card h3 {
  margin: 0.75rem 0 0.5rem;
  font-size: 1.35rem;
  color: var(--about-ink);
}

.page-about__value-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(17, 17, 17, 0.78);
}

.page-about__values-media {
  margin-top: 2.25rem;
  max-width: 44rem;
}

.page-about__coverage-head {
  margin-bottom: 2rem;
  max-width: 34rem;
}

.page-about__coverage-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

.page-about__coverage-copy {
  display: grid;
  gap: 1rem;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(248, 249, 250, 0.82);
  max-width: 38rem;
}

.page-about__coverage-copy p {
  margin: 0;
}

.page-about__coverage-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
}

.page-about__stat {
  flex: 1 1 8.5rem;
  display: grid;
  gap: 0.25rem;
  padding: 1.25rem 1rem;
  background: rgba(245, 194, 66, 0.1);
  border: 1px solid rgba(245, 194, 66, 0.3);
  border-radius: var(--about-radius-md);
  text-align: center;
}

.page-about__stat-num {
  font-family: "DIN Alternate", "Roboto Mono", Menlo, monospace;
  font-size: 2rem;
  font-weight: 700;
  color: var(--about-gold);
  line-height: 1.1;
}

.page-about__stat-label {
  font-size: 0.8125rem;
  color: rgba(248, 249, 250, 0.68);
}

.page-about__coverage-cities {
  margin-top: 2.25rem;
  padding-top: 1.75rem;
  border-top: 1px solid rgba(245, 194, 66, 0.3);
}

.page-about__coverage-cities h3 {
  margin: 0 0 1rem;
  font-size: 1rem;
  color: var(--about-gold);
  letter-spacing: 0.08em;
}

.page-about__city-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about__city-list li {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  color: rgba(248, 249, 250, 0.72);
  background: rgba(10, 14, 39, 0.65);
  border: 1px solid rgba(245, 194, 66, 0.24);
  border-radius: var(--about-radius-pill);
  padding: 0.4rem 0.85rem;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.page-about__city-list li:hover,
.page-about__city-list li:focus-within {
  background: rgba(245, 194, 66, 0.15);
  color: #FFFFFF;
  border-color: rgba(245, 194, 66, 0.55);
}

.page-about__city-dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: var(--about-radius-pill);
  background: var(--about-gold);
  box-shadow: 0 0 0.4rem rgba(245, 194, 66, 0.5);
}

.page-about__credential-main {
  display: grid;
  gap: 1.25rem;
}

.page-about__credential-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 0.75rem;
}

.page-about__credential-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  align-items: center;
  padding: 1.1rem 1.25rem;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(211, 47, 47, 0.2);
  border-radius: var(--about-radius-md);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-about__credential-item:hover,
.page-about__credential-item:focus-within {
  border-color: rgba(211, 47, 47, 0.6);
  box-shadow: var(--about-shadow-soft);
}

.page-about__credential-item p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--about-ink);
}

.page-about__credential-note {
  margin: 0.5rem 0 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: rgba(17, 17, 17, 0.7);
  border-left: 3px solid var(--about-gold);
  padding-left: 1rem;
}

.page-about__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 0.5rem;
}

@media (min-width: 48rem) {
  .page-about .cols-annotated {
    grid-template-columns: 9rem 1fr;
    gap: 2rem;
  }

  .page-about .section-note {
    position: sticky;
    top: 2rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.15rem;
  }

  .page-about__hero-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    min-height: clamp(22rem, 55vh, 34rem);
    padding-block: 3rem 2rem;
  }

  .page-about__hero-text {
    grid-column: 1 / 2;
  }

  .page-about__hero-aside {
    grid-column: 2 / 3;
    flex-direction: column;
    align-items: flex-end;
    position: static;
    writing-mode: vertical-rl;
  }

  .page-about__aside-line {
    writing-mode: vertical-rl;
    letter-spacing: 0.5em;
  }

  .page-about__hero-art {
    display: block;
    position: absolute;
    right: 8%;
    bottom: 4%;
    width: 14rem;
    height: 14rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--about-radius-pill);
    background: radial-gradient(circle, rgba(245, 194, 66, 0.15) 0%, transparent 68%);
    font-family: "STKaiti", "Kaiti SC", serif;
    font-size: 3.5rem;
    color: rgba(245, 194, 66, 0.5);
    transform: rotate(-8deg);
    pointer-events: none;
    z-index: 0;
  }

  .page-about__hero-ring {
    position: absolute;
    width: 10rem;
    height: 10rem;
    border: 2px dashed rgba(245, 194, 66, 0.4);
    border-radius: var(--about-radius-pill);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.25rem;
    color: rgba(245, 194, 66, 0.8);
    animation: page-about-drift 8s ease-in-out infinite;
  }

  .page-about__hero-fish,
  .page-about__hero-wave {
    position: absolute;
    font-size: 1rem;
    color: rgba(255, 107, 107, 0.7);
    animation: page-about-swim 5s ease-in-out infinite;
  }

  .page-about__hero-fish {
    top: 1rem;
    left: 0.25rem;
  }

  .page-about__hero-wave {
    bottom: 1.5rem;
    right: 0.25rem;
    color: rgba(26, 138, 122, 0.6);
  }

  @keyframes page-about-drift {
    0%, 100% { transform: rotate(-6deg); }
    50% { transform: rotate(6deg); }
  }

  @keyframes page-about-swim {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-0.5rem); }
  }

  .page-about__origin-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2.25rem;
    align-items: start;
  }

  .page-about__timeline-section {
    padding-block: clamp(4rem, 8vw, 7rem);
  }

  .page-about__timeline {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    padding-left: 0;
  }

  .page-about__timeline::before {
    left: auto;
    right: 50%;
    top: 1.5rem;
    bottom: 1.5rem;
    transform: translateX(50%);
    width: 3px;
  }

  .page-about__timeline-item {
    padding: 1.75rem;
  }

  .page-about__timeline-item:nth-child(odd) {
    margin-right: 0.75rem;
    grid-column: 1 / 2;
  }

  .page-about__timeline-item:nth-child(even) {
    margin-top: 2.5rem;
    margin-left: 0.75rem;
    grid-column: 2 / 3;
  }

  .page-about__timeline-item:first-child {
    margin-left: 0.75rem;
  }

  .page-about__timeline-item:last-child {
    grid-column: 1 / -1;
    max-width: 50%;
    margin-inline: auto;
  }

  .page-about__timeline-footer {
    margin-top: 2.75rem;
  }

  .page-about__values-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 2.5rem;
  }

  .page-about__excellence-card {
    padding: 2rem 1.75rem;
  }

  .page-about__coverage-layout {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2.5rem;
  }

  .page-about__coverage-copy {
    max-width: none;
  }

  .page-about__credential-list {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
  }

  .page-about__credential-item {
    padding: 1.15rem 1.35rem;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .page-about .section {
    scroll-margin-top: 2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    animation-duration: 0.001s !important;
    transition-duration: 0.001s !important;
  }
}