.page-about {
  --about-max: 1240px;
  --about-line: rgba(11, 31, 58, 0.14);
  --about-orange: #FF6A3D;
  --about-deep: #0B1F3A;
  --about-mid: #16345A;
  --about-paper: #F4F7FB;
  --about-cream: #FAF6EF;
  --about-gold: #FFB300;
  --about-silver: #B8C4D0;
  --about-ink: #101828;
  --about-slate: #4A5A72;
  background:
    linear-gradient(135deg, transparent 0 20px, rgba(255, 106, 61, 0.12) 20px 22px, transparent 22px 100%);
  background-size: 48px 48px;
}

.page-about .container {
  width: min(100% - 32px, var(--about-max));
  margin-inline: auto;
}

.page-about .breadcrumb {
  padding-top: 88px;
}

.page-about .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 12px 0;
  font-family: "Roboto Mono", "SF Mono", "Consolas", monospace;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--about-slate);
  border-bottom: 1px solid var(--about-line);
}

.page-about .breadcrumb a {
  color: var(--about-blue, #2D6FB3);
  text-decoration: none;
}

.page-about .breadcrumb a:hover {
  color: var(--about-orange);
}

.page-about .breadcrumb li::after {
  content: "/";
  margin-left: 8px;
  color: var(--about-silver);
}

.page-about .breadcrumb li:last-child::after {
  content: none;
}

.page-about .about-hero {
  padding-block: 48px 80px;
  position: relative;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 28px;
  right: 0;
  width: 120px;
  height: 8px;
  background: var(--about-orange);
  transform: skewX(-24deg);
  opacity: 0.85;
}

.page-about .about-hero__inner {
  border-left: 4px solid var(--about-orange);
  padding-left: 24px;
  position: relative;
}

.page-about .about-hero__tag {
  margin: 0 0 14px;
  font-family: "Roboto Mono", "SF Mono", "Consolas", monospace;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--about-orange);
  text-transform: uppercase;
}

.page-about .about-hero__title {
  font-family: "Arial Black", "Impact", "Noto Sans SC", sans-serif;
  font-size: clamp(28px, 5vw, 48px);
  line-height: 1.14;
  letter-spacing: 0.01em;
  margin: 0 0 20px;
  color: var(--about-ink);
  max-width: 900px;
  text-wrap: balance;
}

.page-about .about-hero__lead {
  font-size: 16px;
  line-height: 1.8;
  color: var(--about-slate);
  max-width: 720px;
  margin: 0 0 28px;
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin: 0;
}

.page-about .stat-line {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  font-size: 14px;
  color: var(--about-slate);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.page-about .stat-number {
  font-family: "Roboto Mono", "SF Mono", "Consolas", monospace;
  font-size: 22px;
  font-weight: 700;
  color: var(--about-deep);
  background: linear-gradient(90deg, var(--about-orange) 0 3px, transparent 3px);
  padding-left: 10px;
}

.page-about .about-section {
  scroll-margin-top: 120px;
}

.page-about .about-section + .about-section {
  margin-top: 96px;
}

.page-about .section-tag {
  margin: 0 0 12px;
  font-family: "Roboto Mono", "SF Mono", "Consolas", monospace;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--about-orange);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-about .section-tag::after {
  content: "";
  height: 2px;
  flex: 1;
  max-width: 96px;
  background: repeating-linear-gradient(90deg, var(--about-orange) 0 8px, transparent 8px 14px);
}

.page-about .section-title {
  font-family: "Arial Black", "Impact", "Noto Sans SC", sans-serif;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.2;
  margin: 0 0 16px;
  color: var(--about-ink);
  letter-spacing: 0.01em;
}

.page-about .section-lead {
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-slate);
  margin: 0 0 28px;
  max-width: 720px;
}

.page-about .about-section__intro {
  position: relative;
  margin-bottom: 40px;
}

.page-about .about-origin__grid {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
  position: relative;
}

.page-about .about-origin__grid::before {
  content: "";
  position: absolute;
  left: -20px;
  right: -20px;
  top: 50%;
  height: 44px;
  background: linear-gradient(100deg, transparent 0%, rgba(255, 106, 61, 0.14) 44%, transparent 88%);
  transform: translateY(-50%);
  pointer-events: none;
}

.page-about .card-panel {
  border-radius: 0;
  border: 1px solid var(--about-line);
  background: var(--about-paper);
  box-shadow: 0 2px 12px rgba(11, 31, 58, 0.08);
}

.page-about .card-panel--dark {
  background: linear-gradient(135deg, var(--about-deep) 0%, var(--about-mid) 100%);
  border: none;
  color: #E7EDF5;
  padding: 28px 24px;
  position: relative;
  overflow: hidden;
}

.page-about .card-panel--dark::after {
  content: "";
  position: absolute;
  right: -24px;
  bottom: -24px;
  width: 96px;
  height: 96px;
  border: 2px solid rgba(255, 106, 61, 0.4);
  transform: rotate(12deg);
}

.page-about .about-origin__txt p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: #C9D4E2;
}

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

.page-about .about-origin__note {
  border-left: 3px solid var(--about-orange);
  padding-left: 14px;
  font-size: 14px;
  color: #E7EDF5 !important;
  font-weight: 500;
}

.page-about .img-frame {
  position: relative;
  overflow: hidden;
  margin: 0;
  background: var(--about-mid);
}

.page-about .img-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.page-about .img-frame:hover img {
  transform: scale(1.02);
}

.page-about .about-origin__img {
  border: 3px solid var(--about-deep);
  outline: 1px solid var(--about-line);
  outline-offset: 4px;
  min-height: 240px;
}

.page-about .img-frame--wide {
  aspect-ratio: 3 / 2;
}

.page-about .img-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}

.page-about .img-frame-caption {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 12px;
  margin: 0;
  padding: 8px 12px;
  background: rgba(11, 31, 58, 0.86);
  color: #F4F7FB;
  font-size: 13px;
  line-height: 1.6;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  border-left: 3px solid var(--about-orange);
}

.page-about .about-section--milestone {
  background:
    linear-gradient(120deg, transparent 0%, rgba(11, 31, 58, 0.04) 50%, transparent 100%);
  padding: 36px 20px 40px;
  border: 1px solid var(--about-line);
  border-left: 4px solid var(--about-deep);
}

.page-about .about-section--milestone .section-title {
  margin-bottom: 8px;
}

.page-about .about-section__split {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 32px;
}

.page-about .about-milestone__show {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: "Roboto Mono", "SF Mono", "Consolas", monospace;
  font-size: 13px;
  color: var(--about-slate);
  background: var(--about-paper);
  border: 1px solid var(--about-line);
  padding: 8px 14px;
}

.page-about .status-live {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #12B76A;
  position: relative;
  flex: 0 0 auto;
}

.page-about .status-live::before {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid rgba(18, 183, 106, 0.6);
  animation: aboutPulse 1.6s ease-out infinite;
}

@keyframes aboutPulse {
  0% {
    transform: scale(0.6);
    opacity: 1;
  }
  100% {
    transform: scale(1.6);
    opacity: 0;
  }
}

.page-about .about-milestone__timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
  grid-auto-flow: column;
  grid-auto-columns: minmax(240px, 1fr);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 12px;
  scrollbar-width: thin;
}

.page-about .about-milestone__item {
  background: #FFFFFF;
  border: 1px solid var(--about-line);
  padding: 22px 20px 24px;
  position: relative;
  scroll-snap-align: start;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  border-top: 3px solid var(--about-deep);
}

.page-about .about-milestone__item:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 20px rgba(11, 31, 58, 0.12);
}

.page-about .about-milestone__item::after {
  content: "";
  position: absolute;
  right: -8px;
  top: 50%;
  width: 16px;
  height: 16px;
  border-top: 3px solid var(--about-orange);
  border-right: 3px solid var(--about-orange);
  transform: translateY(-50%) rotate(45deg);
  background: transparent;
}

.page-about .about-milestone__item:last-child::after {
  content: none;
}

.page-about .about-milestone__num {
  display: inline-block;
  font-family: "Roboto Mono", "SF Mono", "Consolas", monospace;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--about-orange);
  background: rgba(255, 106, 61, 0.1);
  padding: 4px 10px;
  margin-bottom: 14px;
}

.page-about .about-milestone__item h3 {
  font-size: 18px;
  line-height: 1.4;
  margin: 0 0 10px;
  color: var(--about-ink);
  font-family: "Arial Black", "Impact", "Noto Sans SC", sans-serif;
  letter-spacing: 0.02em;
}

.page-about .about-milestone__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-slate);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-bottom: 36px;
}

.page-about .about-team__hex {
  background: var(--about-paper);
  border: 1px solid var(--about-line);
  border-radius: 0;
  position: relative;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  clip-path: polygon(4% 0, 100% 0, 96% 100%, 0 100%, 0 8%);
}

.page-about .about-team__hex:hover {
  border-color: var(--about-orange);
  box-shadow: 0 8px 18px rgba(11, 31, 58, 0.1);
}

.page-about .about-team__hex summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 18px 20px 24px;
  font-family: "Arial Black", "Impact", "Noto Sans SC", sans-serif;
  font-size: 18px;
  color: var(--about-ink);
  position: relative;
  user-select: none;
}

.page-about .about-team__hex summary::-webkit-details-marker {
  display: none;
}

.page-about .about-team__hex summary::after {
  content: "+";
  margin-left: auto;
  font-family: "Roboto Mono", "SF Mono", "Consolas", monospace;
  font-size: 24px;
  line-height: 1;
  font-weight: 400;
  color: var(--about-orange);
  transition: transform 0.2s ease;
}

.page-about .about-team__hex[open] summary::after {
  content: "–";
  transform: rotate(180deg);
}

.page-about .about-team__index {
  font-family: "Roboto Mono", "SF Mono", "Consolas", monospace;
  font-size: 13px;
  font-weight: 700;
  color: var(--about-orange);
  background: rgba(255, 106, 61, 0.12);
  padding: 4px 8px;
  letter-spacing: 0.04em;
}

.page-about .about-team__detail {
  padding: 0 20px 20px 62px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-slate);
  border-top: 1px dashed var(--about-line);
  margin: 0 16px 0 24px;
  padding-left: 0;
}

.page-about .about-team__detail p {
  margin: 12px 0 0;
  padding-top: 12px;
}

.page-about .about-team__img {
  border: 3px solid var(--about-deep);
  outline: 1px solid var(--about-line);
  outline-offset: 4px;
  aspect-ratio: 3 / 2;
}

.page-about .about-cert__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-about .about-cert__card {
  background: #FFFFFF;
  border: 1px solid var(--about-line);
  padding: 28px 22px;
  position: relative;
  transition: box-shadow 0.2s ease;
}

.page-about .about-cert__card:hover {
  box-shadow: 0 10px 24px rgba(11, 31, 58, 0.1);
}

.page-about .about-cert__icon {
  display: inline-flex;
  width: 64px;
  height: 64px;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.page-about .about-cert__card h3 {
  font-size: 18px;
  line-height: 1.4;
  margin: 0 0 12px;
  color: var(--about-ink);
  font-family: "Arial Black", "Impact", "Noto Sans SC", sans-serif;
}

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

.page-about .about-cert__card--orange {
  background: var(--about-orange);
  border: none;
  color: #FFFFFF;
}

.page-about .about-cert__card--orange h3,
.page-about .about-cert__card--orange p {
  color: #FFFFFF;
}

.page-about .about-cert__card--orange .img-frame {
  aspect-ratio: 1 / 1;
  margin-bottom: 18px;
  border: 2px solid rgba(255, 255, 255, 0.55);
}

.page-about .about-cert__card--orange .about-cert__icon {
  background: rgba(255, 255, 255, 0.16);
}

.page-about .about-service__banner {
  background: linear-gradient(100deg, var(--about-deep) 0%, #0D2445 55%, var(--about-mid) 100%);
  padding: 40px 24px;
  display: grid;
  gap: 36px;
  position: relative;
  overflow: hidden;
}

.page-about .about-service__banner::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 180px;
  height: 100%;
  background: repeating-linear-gradient(-45deg, rgba(255, 106, 61, 0.18) 0 18px, transparent 18px 36px);
  pointer-events: none;
}

.page-about .about-service__banner .section-tag {
  color: var(--about-orange);
}

.page-about .about-service__banner .section-title {
  color: #FFFFFF;
}

.page-about .about-service__banner p {
  color: #C9D4E2;
}

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

.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #FFFFFF;
  background: var(--about-orange);
  border: 2px solid var(--about-orange);
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
  clip-path: polygon(0 0, 100% 0, 100% 70%, calc(100% - 12px) 100%, 0 100%);
}

.page-about .btn:hover {
  background: #E04F21;
  border-color: #E04F21;
}

.page-about .btn--outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.75);
  color: #FFFFFF;
}

.page-about .btn--outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #FFFFFF;
}

.page-about .btn--paper {
  background: #F4F7FB;
  border-color: #F4F7FB;
  color: var(--about-deep);
}

.page-about .btn--paper:hover {
  background: #FFFFFF;
}

.page-about .about-service__aside {
  background: rgba(255, 255, 255, 0.06);
  border-left: 3px solid var(--about-orange);
  padding: 22px 20px;
}

.page-about .about-service__aside-label {
  font-family: "Roboto Mono", "SF Mono", "Consolas", monospace;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--about-gold);
}

.page-about .index-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-about .index-list-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.page-about .index-list-item:last-child {
  border-bottom: none;
}

.page-about .index-list-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 6px;
  color: #E7EDF5;
  text-decoration: none;
  transition: background 0.2s ease;
}

.page-about .index-list-link:hover {
  background: rgba(255, 106, 61, 0.14);
}

.page-about .index-list-num {
  font-family: "Roboto Mono", "SF Mono", "Consolas", monospace;
  font-size: 13px;
  font-weight: 700;
  color: var(--about-orange);
  flex: 0 0 auto;
}

.page-about .index-list-text {
  font-size: 15px;
  line-height: 1.5;
  color: #E7EDF5;
}

.page-about .index-list-link:hover .index-list-text {
  color: #FFFFFF;
}

@media (min-width: 640px) {
  .page-about .about-origin__grid {
    grid-template-columns: 7fr 5fr;
    align-items: stretch;
  }

  .page-about .about-origin__txt {
    padding: 36px 30px;
  }

  .page-about .about-origin__img {
    min-height: auto;
  }

  .page-about .about-team__grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .about-team__hex--wide {
    grid-column: 1 / -1;
  }

  .page-about .about-cert__grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .about-cert__card--orange {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 20px;
    align-items: center;
  }

  .page-about .about-cert__card--orange .img-frame {
    grid-row: span 2;
    margin-bottom: 0;
  }

  .page-about .about-cert__card--orange p {
    grid-column: 2;
  }

  .page-about .about-cert__card--orange h3 {
    grid-column: 2;
    grid-row: 1;
    align-self: end;
  }

  .page-about .about-service__banner {
    grid-template-columns: 3fr 2fr;
    padding: 48px 36px;
  }
}

@media (min-width: 920px) {
  .page-about .about-section__intro {
    max-width: 780px;
  }

  .page-about .about-milestone__timeline {
    grid-auto-columns: minmax(220px, 1fr);
  }

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

  .page-about .about-cert__card--orange {
    grid-column: auto;
    grid-row: span 2;
    display: block;
  }

  .page-about .about-cert__card--orange .img-frame {
    margin-bottom: 18px;
  }

  .page-about .about-cert__card--orange p {
    grid-column: auto;
    grid-row: auto;
  }

  .page-about .about-cert__card--orange h3 {
    grid-column: auto;
    grid-row: auto;
    align-self: auto;
  }

  .page-about .about-cert__card--orange h3 {
    margin-top: 18px;
  }

  .page-about .about-team__hex--wide {
    grid-column: auto;
  }

  .page-about .about-team__hex:nth-child(3) {
    grid-column: 1 / -1;
  }

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

@media (min-width: 1160px) {
  .page-about .about-hero {
    padding-top: 64px;
    padding-bottom: 96px;
  }

  .page-about .about-hero::before {
    width: 220px;
    height: 10px;
  }

  .page-about .about-hero__inner {
    padding-left: 36px;
  }

  .page-about .about-service__banner {
    grid-template-columns: 7fr 3fr;
    padding: 56px 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .status-live::before {
    animation: none;
  }

  .page-about .img-frame:hover img {
    transform: none;
  }

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

.page-about {
  --about-blue: currentColor;
}