.page-about {
  --about-accent: #F5C518;
  --about-orange: #FF7A1A;
  --about-gauge-size: 104px;
  position: relative;
  color: #F2F8F4;
  background-color: #0B2B1F;
  background-image:
    linear-gradient(rgba(30,75,59,.28) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30,75,59,.28) 1px, transparent 1px);
  background-size: 44px 44px;
  padding: 20px 16px 72px;
  overflow-x: hidden;
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

.page-about .about-crumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 28px;
  font-size: 13px;
  letter-spacing: .03em;
  color: #6F8F80;
}

.page-about .about-crumb a {
  color: #A8C3B5;
  text-decoration: none;
  transition: color 150ms cubic-bezier(.2,.7,.3,1);
}

.page-about .about-crumb a:hover {
  color: #F5C518;
}

.page-about .about-crumb .crumb-sep {
  color: #1E4B3B;
}

.page-about .about-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 40px;
  padding: 24px 20px;
  background: linear-gradient(135deg, #123D2D 0%, #071E16 100%);
  border: 1px solid rgba(30,75,59,.8);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  position: relative;
}

.page-about .about-hero::before {
  content: '';
  position: absolute;
  right: 12px;
  top: 12px;
  width: 72px;
  height: 72px;
  border: 1px dashed rgba(30,75,59,.6);
  border-radius: 50%;
}

.page-about .about-hero-text {
  position: relative;
  z-index: 1;
}

.page-about .about-hero h1 {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 12px 0 16px;
}

.page-about .about-hero-lead {
  font-size: 14px;
  line-height: 1.75;
  color: #A8C3B5;
  margin: 0 0 18px;
  max-width: 56ch;
}

.page-about .about-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.page-about .about-hero-code {
  font-family: 'Roboto Mono', 'SFMono', 'Cascadia Code', monospace;
  font-size: 11px;
  color: #6F8F80;
  letter-spacing: .04em;
  border-top: 1px dashed #1E4B3B;
  padding-top: 12px;
  margin-top: 4px;
}

.page-about .about-hero-figure {
  margin: 0;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid rgba(30,75,59,.8);
  background: #071E16;
}

.page-about .about-hero-img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  object-position: center;
  display: block;
}

.page-about .about-layout {
  display: block;
}

.page-about .about-index {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 44px;
  padding: 16px;
  background: rgba(7,30,22,.7);
  border: 1px solid rgba(30,75,59,.7);
  border-radius: 6px;
}

.page-about .about-index .tag-index {
  grid-column: 1 / -1;
  font-family: 'Roboto Mono', 'SFMono', 'Cascadia Code', monospace;
  font-size: 10px;
  letter-spacing: .12em;
  color: #6F8F80;
  text-transform: uppercase;
}

.page-about .about-index a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 10px;
  background: rgba(18,61,45,.7);
  border-left: 3px solid rgba(245,197,24,.7);
  text-decoration: none;
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-weight: 700;
  font-size: 13px;
  color: #F2F8F4;
  transition: border-color 150ms cubic-bezier(.2,.7,.3,1), background 150ms cubic-bezier(.2,.7,.3,1);
}

.page-about .about-index a:hover {
  border-left-color: #F5C518;
  background: rgba(18,61,45,.95);
}

.page-about .about-index a span {
  font-family: 'Roboto Mono', 'SFMono', 'Cascadia Code', monospace;
  font-size: 12px;
  font-weight: 700;
  color: #F5C518;
}

.page-about .about-content {
  min-width: 0;
}

.page-about .about-section {
  margin-bottom: 48px;
}

.page-about .about-section-head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(30,75,59,.8);
}

.page-about .about-section-num {
  font-family: 'Roboto Mono', 'SFMono', 'Cascadia Code', monospace;
  font-size: 18px;
  font-weight: 700;
  color: #F5C518;
  background: rgba(245,197,24,.1);
  border: 1px solid rgba(245,197,24,.3);
  padding: 6px 10px;
  flex-shrink: 0;
  line-height: 1;
}

.page-about .about-section-title {
  min-width: 0;
}

.page-about .about-section-title .tag-index {
  font-family: 'Roboto Mono', 'SFMono', 'Cascadia Code', monospace;
  font-size: 10px;
  letter-spacing: .14em;
  color: #6F8F80;
  text-transform: uppercase;
  display: inline-block;
  margin-bottom: 6px;
}

.page-about .about-section-title h2 {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 6px;
  line-height: 1.2;
}

.page-about .about-section-title p {
  font-size: 13px;
  line-height: 1.7;
  color: #A8C3B5;
  margin: 0;
}

.page-about .about-gauges {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 22px;
}

.page-about .about-gauge-card {
  background: rgba(7,30,22,.65);
  border: 1px solid rgba(30,75,59,.7);
  border-radius: 6px;
  padding: 18px 8px 14px;
  text-align: center;
  min-width: 0;
}

.page-about .about-gauge {
  --ga: 288deg;
  width: 88px;
  height: 88px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: conic-gradient(#F5C518 0deg var(--ga), #1E4B3B var(--ga) 360deg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.page-about .about-gauge::before {
  content: '';
  position: absolute;
  inset: 9px;
  border-radius: 50%;
  background: #071E16;
}

.page-about .about-gauge--large {
  --ga: 288deg;
}

.page-about .about-gauge--mid {
  --ga: 270deg;
}

.page-about .about-gauge--full {
  --ga: 360deg;
}

.page-about .about-gauge-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.page-about .about-gauge-value {
  font-family: 'Roboto Mono', 'SFMono', 'Cascadia Code', monospace;
  font-size: 22px;
  font-weight: 700;
  color: #F2F8F4;
  line-height: 1;
}

.page-about .about-gauge-unit {
  font-size: 11px;
  color: #A8C3B5;
  font-family: 'Roboto Mono', 'SFMono', 'Cascadia Code', monospace;
}

.page-about .about-gauge-title {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 14px;
  font-weight: 700;
  margin: 0 0 4px;
}

.page-about .about-gauge-desc {
  font-size: 11px;
  line-height: 1.5;
  color: #6F8F80;
  margin: 0;
}

.page-about .about-mech-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 20px;
}

.page-about .about-indicator-list,
.page-about .about-update-flow {
  background: rgba(18,61,45,.7);
  border: 1px solid rgba(30,75,59,.8);
  border-radius: 6px;
  padding: 18px 16px;
}

.page-about .about-indicator-list h3,
.page-about .about-update-flow h3 {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 16px;
  font-weight: 800;
  margin: 0 0 14px;
}

.page-about .about-indicator-items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.page-about .about-indicator-items li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  padding: 8px 10px;
  background: rgba(7,30,22,.6);
  border: 1px solid rgba(30,75,59,.5);
  border-radius: 4px;
  transition: border-color 150ms cubic-bezier(.2,.7,.3,1), transform 150ms cubic-bezier(.2,.7,.3,1);
}

.page-about .about-indicator-items li:hover {
  border-color: #F5C518;
  transform: translateY(-1px);
}

.page-about .about-indicator-items li span {
  font-family: 'Roboto Mono', 'SFMono', 'Cascadia Code', monospace;
  font-size: 10px;
  color: #F5C518;
  opacity: .9;
}

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

.page-about .about-flow-list li {
  display: flex;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(30,75,59,.6);
}

.page-about .about-flow-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-about .about-flow-step {
  font-family: 'Roboto Mono', 'SFMono', 'Cascadia Code', monospace;
  font-size: 11px;
  font-weight: 700;
  color: #F5C518;
  background: rgba(245,197,24,.1);
  padding: 6px 8px;
  border-radius: 4px;
  height: fit-content;
  white-space: nowrap;
}

.page-about .about-flow-list strong {
  display: block;
  font-size: 13px;
  margin-bottom: 3px;
}

.page-about .about-flow-list p {
  margin: 0;
  font-size: 12px;
  line-height: 1.55;
  color: #A8C3B5;
}

.page-about .about-process-figure {
  margin: 20px 0 0;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid rgba(30,75,59,.7);
  background: #071E16;
}

.page-about .about-process-img,
.page-about .about-timeline-img {
  width: 100%;
  height: auto;
  display: block;
}

.page-about .about-coverage-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-coverage-main {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.page-about .about-coverage-stat {
  background: rgba(18,61,45,.7);
  border: 1px solid rgba(30,75,59,.8);
  border-radius: 6px;
  padding: 22px 10px;
  text-align: center;
  min-width: 0;
}

.page-about .about-stat-value {
  display: block;
  font-family: 'Roboto Mono', 'SFMono', 'Cascadia Code', monospace;
  font-size: 24px;
  font-weight: 700;
  color: #F5C518;
  margin-bottom: 4px;
  line-height: 1.1;
}

.page-about .about-stat-label {
  font-size: 11px;
  color: #A8C3B5;
  display: block;
}

.page-about .about-coverage-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-about .about-coverage-region,
.page-about .about-coverage-cats {
  background: rgba(7,30,22,.7);
  border: 1px solid rgba(30,75,59,.7);
  border-radius: 6px;
  padding: 18px 16px;
}

.page-about .about-coverage-region h3,
.page-about .about-coverage-cats h3 {
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 8px;
}

.page-about .about-coverage-region p {
  font-size: 13px;
  line-height: 1.65;
  color: #A8C3B5;
  margin: 0 0 12px;
}

.page-about .about-code-line {
  font-family: 'Roboto Mono', 'SFMono', 'Cascadia Code', monospace;
  font-size: 10px;
  letter-spacing: .05em;
  color: #6F8F80;
  border-top: 1px dashed #1E4B3B;
  padding-top: 10px;
}

.page-about .about-coverage-cats ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-coverage-cats li {
  font-size: 12px;
  padding: 6px 12px;
  background: rgba(18,61,45,.8);
  border: 1px solid rgba(30,75,59,.7);
  border-radius: 20px;
  color: #A8C3B5;
}

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

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

.page-about .about-timeline-item {
  position: relative;
  padding-left: 28px;
  padding-bottom: 26px;
  border-left: 2px solid #1E4B3B;
}

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

.page-about .about-timeline-item::before {
  content: '';
  position: absolute;
  left: -7px;
  top: 2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #0B2B1F;
  border: 3px solid #F5C518;
}

.page-about .about-timeline-year {
  font-family: 'Roboto Mono', 'SFMono', 'Cascadia Code', monospace;
  font-size: 22px;
  font-weight: 700;
  color: #F5C518;
  display: block;
  margin-bottom: 8px;
  line-height: 1;
}

.page-about .about-timeline-card {
  background: rgba(18,61,45,.75);
  border: 1px solid rgba(30,75,59,.8);
  border-radius: 6px;
  padding: 16px;
  transition: border-color 150ms cubic-bezier(.2,.7,.3,1), transform 150ms cubic-bezier(.2,.7,.3,1);
}

.page-about .about-timeline-card:hover {
  border-color: rgba(245,197,24,.6);
  transform: translateY(-1px);
}

.page-about .about-timeline-card h3 {
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 6px;
}

.page-about .about-timeline-card p {
  margin: 0;
  font-size: 12px;
  line-height: 1.6;
  color: #A8C3B5;
}

.page-about .about-timeline-figure {
  margin: 0;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid rgba(30,75,59,.7);
  background: #071E16;
}

.page-about .about-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 26px;
}

.page-about .about-team-card {
  background: rgba(18,61,45,.75);
  border: 1px solid rgba(30,75,59,.8);
  border-radius: 6px;
  padding: 22px 20px;
  position: relative;
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  transition: border-color 150ms cubic-bezier(.2,.7,.3,1), transform 150ms cubic-bezier(.2,.7,.3,1);
}

.page-about .about-team-card:hover {
  border-color: rgba(245,197,24,.55);
  transform: translateY(-2px);
}

.page-about .about-team-card::after {
  content: '';
  position: absolute;
  right: -22px;
  bottom: -22px;
  width: 84px;
  height: 84px;
  border: 1px solid rgba(30,75,59,.4);
  transform: rotate(45deg);
  pointer-events: none;
}

.page-about .about-team-code {
  font-family: 'Roboto Mono', 'SFMono', 'Cascadia Code', monospace;
  font-size: 10px;
  letter-spacing: .14em;
  color: #F5C518;
  text-transform: uppercase;
  background: rgba(245,197,24,.08);
  padding: 4px 8px;
  border-radius: 3px;
}

.page-about .about-team-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin: 14px 0 8px;
}

.page-about .about-team-card p {
  font-size: 13px;
  line-height: 1.65;
  color: #A8C3B5;
  margin: 0;
}

.page-about .about-contact-box {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 28px;
}

.page-about .about-contact-col {
  background: rgba(7,30,22,.75);
  border: 1px solid rgba(30,75,59,.8);
  border-radius: 6px;
  padding: 20px 18px;
}

.page-about .about-contact-col h3 {
  font-size: 16px;
  font-weight: 700;
  margin: 10px 0 10px;
}

.page-about .about-contact-col p {
  font-size: 13px;
  line-height: 1.6;
  color: #A8C3B5;
  margin: 0 0 8px;
}

.page-about .about-contact-col .chamfer-btn {
  margin-top: 10px;
}

.page-about .about-further-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  padding: 18px 0 4px;
  border-top: 1px solid rgba(30,75,59,.7);
}

.page-about .about-further-links div {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-further-links a {
  color: #A8C3B5;
  background: rgba(18,61,45,.7);
  border: 1px solid #1E4B3B;
  border-radius: 4px;
  padding: 8px 14px;
  font-size: 13px;
  text-decoration: none;
  transition: color 150ms cubic-bezier(.2,.7,.3,1), border-color 150ms cubic-bezier(.2,.7,.3,1);
}

.page-about .about-further-links a:hover {
  color: #F2F8F4;
  border-color: #F5C518;
}

@media (min-width: 720px) {
  .page-about {
    padding: 28px 28px 88px;
  }

  .page-about .about-hero {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: center;
    padding: 40px 36px;
    margin-bottom: 48px;
  }

  .page-about .about-hero h1 {
    font-size: 38px;
  }

  .page-about .about-hero-lead {
    font-size: 15px;
  }

  .page-about .about-hero-img {
    height: 320px;
  }

  .page-about .about-index {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-mech-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

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

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

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

  .page-about .about-timeline-layout {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-about {
    padding: 40px 48px 104px;
  }

  .page-about .about-hero {
    grid-template-columns: 1.1fr 0.9fr;
    padding: 52px 48px;
  }

  .page-about .about-hero h1 {
    font-size: 44px;
  }

  .page-about .about-hero-figure {
    height: 420px;
  }

  .page-about .about-hero-img {
    height: 420px;
    object-fit: cover;
  }

  .page-about .about-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: 24px;
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 20px 16px;
  }

  .page-about .about-index .tag-index {
    margin-bottom: 12px;
  }

  .page-about .about-index a {
    background: transparent;
    border-left: 3px solid transparent;
    border-bottom: 1px solid rgba(30,75,59,.6);
    border-radius: 0;
    padding: 14px 8px;
    font-size: 13px;
  }

  .page-about .about-index a:hover {
    background: rgba(18,61,45,.5);
    border-left-color: #F5C518;
  }
}

@media (min-width: 1280px) {
  .page-about {
    padding-left: 64px;
    padding-right: 64px;
  }

  .page-about .about-hero {
    padding: 64px 56px;
  }

  .page-about .about-hero h1 {
    font-size: 48px;
  }

  .page-about .about-section {
    margin-bottom: 64px;
  }
}