.page-about {
  --about-accent: #FF6B35;
  --about-accent-2: #FF3D2E;
  --about-gold: #F5C518;
  --about-line: rgba(230, 237, 243, 0.14);
  --about-ink: #E6EDF3;
  --about-ink-2: #9DB2C6;
  --about-bg-dark: #0B1A2E;
  --about-bg-panel: #10233F;
  --about-bg-card: #16304F;
  --about-speed-line: linear-gradient(135deg, #FF6B35 0%, #FF3D2E 100%);
  background: var(--about-bg-dark);
  color: var(--about-ink);
  overflow-x: hidden;
}

.page-about .content-wrap {
  max-width: 1440px;
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.page-about .breadcrumbs {
  max-width: 1440px;
  margin-inline: auto;
  padding: 1rem 1.25rem 0;
}

.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.875rem;
}

.page-about .breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.page-about .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--about-ink-2);
  font-family: var(--font-data, monospace);
}

.page-about .breadcrumb-link {
  color: var(--about-ink-2);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-about .breadcrumb-link:hover {
  color: var(--about-accent);
}

.page-about .breadcrumb-current {
  color: var(--about-ink);
  font-weight: 600;
}

.page-about .section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--about-accent);
  font-weight: 700;
  margin: 0 0 1rem;
}

.page-about .section-label::before {
  content: "";
  display: inline-block;
  width: 1.75rem;
  height: 2px;
  background: var(--about-speed-line);
  transform: skewX(-30deg);
}

.page-about .section-label::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--about-gold);
  border-radius: 50%;
}

.page-about .display-title {
  font-family: var(--font-head, "PingFang SC", "Microsoft YaHei", sans-serif);
  font-size: clamp(2.4rem, 8vw, 5.2rem);
  font-weight: 900;
  line-height: 1.08;
  margin: 0 0 1.25rem;
  letter-spacing: -0.02em;
}

.page-about .text-accent {
  background: var(--about-speed-line);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-style: normal;
  display: inline-block;
  padding-inline: 0.1em;
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  border-radius: 6px;
  font-family: var(--font-head, "PingFang SC", "Microsoft YaHei", sans-serif);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.3s ease, background 0.3s ease;
  border: 0;
  cursor: pointer;
}

.page-about .btn-fire {
  background: var(--about-speed-line);
  color: #fff;
  box-shadow: 0 10px 30px rgba(255, 107, 53, 0.35);
}

.page-about .btn-fire:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(255, 61, 46, 0.5);
}

.page-about .btn-ghost {
  background: transparent;
  color: var(--about-ink);
  border: 1px solid rgba(230, 237, 243, 0.35);
}

.page-about .btn-ghost:hover {
  border-color: var(--about-accent);
  color: var(--about-accent);
  transform: translateY(-2px);
}

.page-about .vertical-note {
  writing-mode: vertical-rl;
  font-family: var(--font-data, monospace);
  font-size: 0.75rem;
  letter-spacing: 0.35em;
  color: var(--about-ink-2);
  text-transform: uppercase;
}

.page-about .media {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--about-bg-panel);
}

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

.page-about .media--skew {
  clip-path: polygon(0 0, 100% 4%, 100% 100%, 0 92%);
}

.page-about .media--wide {
  clip-path: polygon(2% 0, 100% 0, 98% 100%, 0 100%);
}

.page-about .tag {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 1rem;
  background: var(--about-bg-card);
  border-left: 3px solid var(--about-accent);
  font-size: 0.82rem;
  color: var(--about-ink);
  border-radius: 0 4px 4px 0;
}

.page-about .tag--gold {
  border-left-color: var(--about-gold);
}

.page-about .section--alt {
  background: var(--about-bg-panel) no-repeat center / cover;
}

.page-about .section--texture {
  position: relative;
  background:
    radial-gradient(circle at 85% 20%, rgba(255, 107, 53, 0.12), transparent 40%),
    linear-gradient(180deg, var(--about-bg-dark) 0%, var(--about-bg-panel) 100%);
}

.page-about .section--texture::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  background-image:
    repeating-linear-gradient(90deg, transparent, transparent 3px, rgba(230, 237, 243, 0.03) 3px, rgba(230, 237, 243, 0.03) 4px),
    repeating-linear-gradient(0deg, transparent, transparent 7px, rgba(230, 237, 243, 0.02) 7px, rgba(230, 237, 243, 0.02) 8px);
}

.page-about .section--texture .content-wrap {
  position: relative;
  z-index: 1;
}

.page-about .grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.page-about .grid__item--span-5,
.page-about .grid__item--span-6,
.page-about .grid__item--span-7,
.page-about .grid__item--span-8 {
  grid-column: span 1;
}

.page-about__hero {
  padding: 3.5rem 0 4.5rem;
  position: relative;
}

.page-about__hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 65%;
  height: 100%;
  background: linear-gradient(115deg, transparent 20%, rgba(22, 48, 79, 0.5) 100%);
  clip-path: polygon(25% 0, 100% 0, 100% 100%, 45% 100%);
  z-index: 0;
}

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

.page-about__hero-copy {
  max-width: 760px;
}

.page-about__hero-lead {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--about-ink-2);
  max-width: 36rem;
  margin: 0 0 2rem;
}

.page-about__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.page-about__hero-side {
  display: flex;
  align-items: center;
  gap: 2rem;
  justify-content: flex-end;
}

.page-about__hero-badge {
  width: 152px;
  padding: 1.5rem 1.25rem;
  background: var(--about-speed-line);
  clip-path: polygon(8% 0, 100% 0, 100% 100%, 0 100%);
  box-shadow: 0 18px 50px rgba(255, 61, 46, 0.4);
  text-align: left;
  color: #fff;
  transform: rotate(-2deg);
}

.page-about__hero-badge-num {
  display: block;
  font-family: var(--font-data, monospace);
  font-size: 3rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
}

.page-about__hero-badge-label {
  display: block;
  margin-top: 0.6rem;
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.08em;
}

.page-about__origin {
  padding: 4.5rem 0;
}

.page-about__origin .grid {
  align-items: center;
}

.page-about__section-title {
  font-family: var(--font-head, "PingFang SC", "Microsoft YaHei", sans-serif);
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 900;
  line-height: 1.15;
  margin: 0 0 1.5rem;
  letter-spacing: -0.01em;
}

.page-about__body-text {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--about-ink-2);
  margin: 0 0 1.2rem;
}

.page-about__body-text:last-of-type {
  margin-bottom: 2rem;
}

.page-about__origin-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about__origin-media {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.page-about__figcaption {
  font-size: 0.8rem;
  color: var(--about-ink-2);
  letter-spacing: 0.03em;
  padding-left: 0.5rem;
  border-left: 3px solid var(--about-accent);
  margin-top: 0.5rem;
}

.page-about__milestones {
  padding: 4.5rem 0;
  background:
    linear-gradient(115deg, transparent 0%, rgba(16, 35, 63, 0.6) 24%, transparent 55%),
    radial-gradient(circle at 70% 80%, rgba(245, 197, 24, 0.08), transparent 45%);
}

.page-about__section-head {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  justify-content: space-between;
  margin-bottom: 3rem;
}

.page-about__section-note {
  font-size: 0.85rem;
  color: var(--about-ink-2);
  max-width: 24rem;
  line-height: 1.6;
  margin: 0;
}

.page-about__timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding-left: 1.25rem;
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--about-accent), var(--about-accent-2) 55%, var(--about-gold));
  border-radius: 2px;
}

.page-about__milestone {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  position: relative;
  padding: 1.25rem;
  background: rgba(16, 35, 63, 0.66);
  border: 1px solid var(--about-line);
  border-radius: 12px;
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.35s ease, box-shadow 0.35s ease;
}

.page-about__milestone::before {
  content: "";
  position: absolute;
  left: -1.25rem;
  top: 2rem;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--about-accent);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.2);
  z-index: 1;
  transform: translateX(-42%);
}

.page-about__milestone:hover,
.page-about__milestone:focus-visible {
  transform: translateX(6px);
  border-color: rgba(255, 107, 53, 0.6);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.3);
  outline: none;
}

.page-about__milestone-year {
  font-family: var(--font-data, monospace);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--about-accent);
  line-height: 1;
  transform: skewX(-6deg);
}

.page-about__milestone-card {
  position: relative;
}

.page-about__milestone-index {
  position: absolute;
  top: 0;
  right: 0;
  font-family: var(--font-data, monospace);
  font-size: 0.72rem;
  color: var(--about-ink-2);
  letter-spacing: 0.08em;
}

.page-about__milestone-title {
  font-family: var(--font-head, "PingFang SC", "Microsoft YaHei", sans-serif);
  font-size: 1.35rem;
  font-weight: 900;
  margin: 0 0 0.65rem;
}

.page-about__milestone-desc {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--about-ink-2);
  margin: 0;
  max-width: 34rem;
}

.page-about__data {
  padding: 4.5rem 0;
}

.page-about__data .grid {
  align-items: start;
}

.page-about__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin: 2rem 0 0;
}

.page-about__stat {
  padding: 1.5rem 1.25rem;
  background: rgba(16, 35, 63, 0.85);
  border: 1px solid var(--about-line);
  border-top: 3px solid var(--about-accent);
  border-radius: 10px;
  margin: 0;
}

.page-about__stat-label {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--about-ink-2);
  text-transform: uppercase;
  margin-bottom: 0.6rem;
  font-weight: 600;
}

.page-about__stat-value {
  font-family: var(--font-data, monospace);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--about-ink);
  line-height: 1;
  margin: 0 0 0.5rem;
}

.page-about__stat-value span {
  color: var(--about-accent);
}

.page-about__stat-unit {
  font-size: 0.8rem;
  color: var(--about-ink-2);
  line-height: 1.5;
  margin: 0;
}

.page-about__data-media {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.page-about__data-figure {
  margin: 0;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.4);
}

.page-about__data-figure img {
  min-height: 320px;
}

.page-about__data-link {
  align-self: flex-start;
}

.page-about__honor {
  padding: 4.5rem 0;
  position: relative;
}

.page-about__honor-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}

.page-about__seal {
  margin: 0;
  position: relative;
  text-align: center;
  max-width: 420px;
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.page-about__seal:hover,
.page-about__seal:focus-visible {
  transform: rotate(-3deg);
  outline: none;
}

.page-about__seal img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 16px;
  filter: saturate(0.9) contrast(1.1);
  box-shadow: var(--shadow, 0 20px 60px rgba(0, 0, 0, 0.35));
}

.page-about__seal-caption {
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.page-about__seal-title {
  font-family: var(--font-head, "PingFang SC", "Microsoft YaHei", sans-serif);
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--about-ink);
}

.page-about__seal-desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--about-ink-2);
  max-width: 30rem;
  margin-inline: auto;
}

.page-about__honor-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.page-about__honor-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 1.25rem;
  align-items: start;
  padding: 1.5rem 1.25rem;
  background: rgba(16, 35, 63, 0.66);
  border-left: 4px solid var(--about-gold);
  border-radius: 0 10px 10px 0;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.page-about__honor-item:hover {
  background: rgba(22, 48, 79, 0.9);
  border-left-color: var(--about-accent);
}

.page-about__honor-year {
  font-family: var(--font-data, monospace);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--about-gold);
  padding-top: 0.2rem;
  letter-spacing: 0.05em;
}

.page-about__honor-name {
  font-family: var(--font-head, "PingFang SC", "Microsoft YaHei", sans-serif);
  font-size: 1.05rem;
  font-weight: 900;
  margin: 0 0 0.5rem;
}

.page-about__honor-desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--about-ink-2);
  margin: 0;
}

.page-about__cta {
  padding: 3rem 0 5rem;
}

.page-about__cta-panel {
  position: relative;
  padding: 2.5rem 1.5rem;
  background: rgba(16, 35, 63, 0.7);
  border: 1px solid rgba(230, 237, 243, 0.16);
  border-top: 4px solid var(--about-accent);
  border-radius: 16px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  align-items: center;
  overflow: hidden;
}

.page-about__cta-panel::after {
  content: "";
  position: absolute;
  top: -70px;
  right: -70px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.25), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.page-about__cta-title {
  font-family: var(--font-head, "PingFang SC", "Microsoft YaHei", sans-serif);
  font-size: clamp(1.4rem, 3.6vw, 2.2rem);
  font-weight: 900;
  line-height: 1.2;
  margin: 0;
  max-width: 42rem;
}

.page-about__cta-text {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--about-ink-2);
  max-width: 34rem;
  margin: 0;
}

.page-about__cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  justify-content: center;
}

@media (min-width: 720px) {
  .page-about .content-wrap {
    padding-inline: 2rem;
  }

  .page-about .breadcrumbs {
    padding-inline: 2rem;
  }

  .page-about .grid__item--span-5 {
    grid-column: span 5;
  }

  .page-about .grid__item--span-6 {
    grid-column: span 6;
  }

  .page-about .grid__item--span-7 {
    grid-column: span 7;
  }

  .page-about .grid__item--span-8 {
    grid-column: span 8;
  }

  .page-about .grid {
    grid-template-columns: repeat(12, 1fr);
    gap: 2.5rem;
  }

  .page-about .grid:has(.grid__item--span-5) .grid__item--span-5 + .grid__item--span-6,
  .page-about .grid:has(.grid__item--span-6) .grid__item--span-6 + .grid__item--span-6 {
    grid-column: span 6;
  }

  .page-about__hero {
    padding: 5.5rem 0 6.5rem;
  }

  .page-about__hero-inner {
    grid-template-columns: 7fr 5fr;
    gap: 2rem;
  }

  .page-about__hero-side {
    flex-direction: row;
    justify-content: flex-end;
  }

  .page-about__section-head {
    flex-direction: row;
    align-items: flex-end;
  }

  .page-about__timeline {
    padding-left: 4rem;
  }

  .page-about__timeline::before {
    left: 1.2rem;
  }

  .page-about__milestone {
    grid-template-columns: 130px 1fr;
    align-items: start;
    gap: 1.5rem;
  }

  .page-about__milestone::before {
    left: -4rem;
  }

  .page-about__milestone-year {
    font-size: 2.6rem;
  }

  .page-about__stats {
    gap: 1rem;
  }

  .page-about__honor-grid {
    grid-template-columns: 5fr 7fr;
    gap: 4rem;
  }

  .page-about__cta-panel {
    padding: 3.5rem 2.5rem;
  }
}

@media (min-width: 1080px) {
  .page-about .content-wrap {
    padding-inline: 2.5rem;
  }

  .page-about .breadcrumbs {
    padding-inline: 2.5rem;
  }

  .page-about__hero-inner {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: 3rem;
  }

  .page-about__hero-title {
    max-width: 17em;
  }

  .page-about__timeline {
    gap: 1.5rem;
  }

  .page-about__milestone {
    grid-template-columns: 160px 1fr;
  }

  .page-about__milestone-desc {
    max-width: 42rem;
  }

  .page-about__data .grid {
    grid-template-columns: repeat(12, 1fr);
    gap: 4rem;
  }

  .page-about__data .grid__item--span-6:first-child {
    grid-column: 1 / span 6;
  }

  .page-about__data .grid__item--span-6:last-child {
    grid-column: 7 / span 6;
  }

  .page-about__honor-grid {
    grid-template-columns: 5fr 7fr;
    gap: 5rem;
  }

  .page-about__seal {
    position: sticky;
    top: 7rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}