.page-about {
  --about-primary: #0066FF;
  --about-accent: #9D00FF;
  --about-neon: #39FF14;
  --about-bg: #0B0F14;
  --about-bg-deep: #060A10;
  --about-panel: #131A24;
  --about-panel-light: #1A232F;
  --about-border: #2E3A4A;
  --about-text: #FFFFFF;
  --about-text-dim: #A0A8B4;
  --about-warn: #FF9500;
  --about-error: #FF3B30;
  --about-font-heading: -apple-system, BlinkMacSystemFont, "Segoe UI", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --about-font-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --about-font-mono: "Roboto Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --about-container: 1280px;
  --about-header-h: 60px;
  --about-space-sm: 8px;
  --about-space-md: 16px;
  --about-space-lg: 24px;
  --about-space-xl: 40px;
  --about-space-xxl: 64px;
  --about-ease-out: cubic-bezier(0.22, 1, 0.36, 1);

  background-color: var(--about-bg);
  color: var(--about-text);
  font-family: var(--about-font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

.page-about .container {
  width: 100%;
  max-width: var(--about-container);
  margin-inline: auto;
  padding-inline: var(--about-space-md);
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--about-space-sm);
  padding-block: var(--about-space-md);
  max-width: var(--about-container);
  margin-inline: auto;
  padding-inline: var(--about-space-md);
  border-bottom: 1px solid var(--about-border);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-about .breadcrumb a {
  color: var(--about-text-dim);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.page-about .breadcrumb-separator {
  color: var(--about-text-dim);
  opacity: 0.5;
}

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

.page-about .mono {
  font-family: var(--about-font-mono);
  letter-spacing: 0.02em;
}

.page-about .tag-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--about-space-sm);
  padding: 2px 12px;
  font-size: 12px;
  line-height: 1.6;
  border-radius: 0;
  white-space: nowrap;
}

.page-about .tag-chip--neon {
  border: 1px solid var(--about-accent);
  color: var(--about-accent);
  background: rgba(157, 0, 255, 0.08);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.page-about .tag-chip--tech {
  border: 1px solid var(--about-border);
  color: var(--about-text-dim);
  background: rgba(19, 26, 36, 0.6);
}
.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--about-space-sm);
  padding: 10px 24px;
  font-family: var(--about-font-heading);
  font-size: 14px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.06em;
  text-decoration: none;
  border-radius: 0;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.page-about .btn--primary {
  background: var(--about-primary);
  color: #FFFFFF;
  border-color: var(--about-primary);
}

.page-about .btn--primary:hover {
  background: transparent;
  color: var(--about-primary);
  box-shadow: 0 0 20px rgba(0, 102, 255, 0.3);
}

.page-about .btn--ghost {
  background: transparent;
  color: var(--about-text);
  border-color: var(--about-border);
}

.page-about .btn--ghost:hover {
  border-color: var(--about-primary);
  color: var(--about-primary);
}

.page-about .section-index {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--about-accent);
  text-transform: uppercase;
  margin-bottom: var(--about-space-sm);
}

.page-about .section-heading__label {
  font-size: 14px;
  color: var(--about-text-dim);
  margin-top: 4px;
  letter-spacing: 0.06em;
}
.page-about .img-frame {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background: var(--about-panel);
}

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

.page-about .img-frame--ratio-16x9 {
  aspect-ratio: 16 / 9;
}

.page-about .img-frame--ratio-16x9 img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .img-frame--ratio-4x3 {
  aspect-ratio: 4 / 3;
}

.page-about .img-frame--ratio-4x3 img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .img-frame--ratio-1x1 {
  aspect-ratio: 1 / 1;
}

.page-about .img-frame--ratio-1x1 img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .lattice-bg {
  position: relative;
  background:
    linear-gradient(to bottom, rgba(11, 15, 20, 0.9), rgba(11, 15, 20, 0.98)),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.02) 0px, rgba(255, 255, 255, 0.02) 1px, transparent 1px, transparent 4px),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.02) 0px, rgba(255, 255, 255, 0.02) 1px, transparent 1px, transparent 4px);
}

.page-about .lattice-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(157, 0, 255, 0.08) 45%, transparent 70%);
  pointer-events: none;
}

.page-about .scrolly-section {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--about-ease-out), transform 0.7s var(--about-ease-out);
}

.page-about .scrolly-section[data-scrolly="visible"] {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .page-about .scrolly-section {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

.page-about .about-hero {
  position: relative;
  padding-block: 56px 72px;
  border-bottom: 1px solid var(--about-border);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - 35px));
}

.page-about .about-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
  gap: var(--about-space-xl);
}

.page-about .about-hero__main {
  max-width: 640px;
}

.page-about .about-hero__title {
  font-family: var(--about-font-heading);
  font-size: clamp(32px, 8vw, 56px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: 0.02em;
  margin: var(--about-space-md) 0 var(--about-space-md);
  text-transform: uppercase;
  color: var(--about-text);
}

.page-about .about-hero__title-accent {
  display: block;
  background: linear-gradient(90deg, var(--about-primary) 0%, var(--about-accent) 80%, var(--about-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-size: 0.38em;
  font-weight: 800;
  letter-spacing: 0.28em;
  margin-top: var(--about-space-sm);
}

.page-about .about-hero__lead {
  font-size: 16px;
  line-height: 1.75;
  color: var(--about-text-dim);
  max-width: 520px;
  margin-bottom: var(--about-space-lg);
}

.page-about .about-hero__meta {
  display: flex;
  flex-direction: column;
  gap: var(--about-space-lg);
  padding: var(--about-space-lg);
  background: linear-gradient(135deg, rgba(19, 26, 36, 0.6) 0%, rgba(0, 102, 255, 0.08) 100%);
  border-left: 2px solid var(--about-primary);
  position: relative;
}

.page-about .about-hero__meta::before {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, transparent 45%, rgba(157, 0, 255, 0.25) 45%, rgba(157, 0, 255, 0.25) 55%, transparent 55%);
  pointer-events: none;
}

.page-about .hero-facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-space-md);
}

.page-about .hero-facts__item {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.page-about .hero-facts__item dt {
  font-family: var(--about-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--about-accent);
  margin-bottom: 2px;
}

.page-about .hero-facts__item dd {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--about-text);
}

.page-about .about-intro {
  padding-block: var(--about-space-xxl) var(--about-space-xl);
}

.page-about .about-intro__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-space-xl);
}

.page-about .about-intro__text h2 {
  font-family: var(--about-font-heading);
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 800;
  line-height: 1.3;
  margin: var(--about-space-sm) 0 var(--about-space-md);
  letter-spacing: 0.01em;
}

.page-about .about-intro__text p {
  color: var(--about-text-dim);
  font-size: 15px;
  margin-bottom: var(--about-space-md);
}

.page-about .about-intro__aside {
  display: flex;
  flex-direction: column;
  gap: var(--about-space-sm);
  align-items: flex-start;
  padding: var(--about-space-lg);
  background: transparent;
  border-top: 1px solid var(--about-border);
}

.page-about .about-intro__aside-note {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 11px;
  color: var(--about-text-dim);
  letter-spacing: 0.08em;
  padding-bottom: var(--about-space-sm);
  border-bottom: 1px solid var(--about-border);
  width: 100%;
}

.page-about .about-milestone {
  padding-block: var(--about-space-xxl);
  background: linear-gradient(180deg, rgba(6, 10, 16, 0.4) 0%, rgba(13, 18, 26, 0.6) 100%);
}

.page-about .section-heading {
  margin-bottom: var(--about-space-xl);
}

.page-about .section-heading--row {
  display: flex;
  flex-direction: column;
  gap: var(--about-space-lg);
  align-items: flex-start;
}

.page-about .milestone-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-space-xl);
}

.page-about .milestone-visual {
  border-left: 4px solid var(--about-primary);
}

.page-about .milestone-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.page-about .milestone-item {
  position: relative;
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: var(--about-space-lg);
  padding: var(--about-space-lg) 0;
  border-bottom: 1px solid var(--about-border);
}

.page-about .milestone-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 28px;
  height: 2px;
  background: linear-gradient(90deg, var(--about-primary), transparent);
}

.page-about .milestone-item__year {
  font-size: 14px;
  font-weight: 700;
  color: var(--about-primary);
  line-height: 1.4;
  padding-top: 2px;
}

.page-about .milestone-item__body h3 {
  font-family: var(--about-font-heading);
  font-size: 18px;
  font-weight: 800;
  margin: 0 0 var(--about-space-sm);
  letter-spacing: 0.01em;
}

.page-about .milestone-item__body p {
  margin: 0;
  font-size: 14px;
  color: var(--about-text-dim);
  line-height: 1.7;
}

.page-about .about-cert {
  padding-block: var(--about-space-xxl);
}

.page-about .cert-badge-img {
  max-width: 300px;
  margin-top: var(--about-space-md);
}

.page-about .cert-list {
  list-style: none;
  margin: var(--about-space-lg) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-space-md);
}

.page-about .cert-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  align-items: start;
  gap: var(--about-space-md);
  padding: var(--about-space-lg);
  background: var(--about-panel);
  border-left: 3px solid var(--about-primary);
  transition: background-color 0.3s ease, transform 0.3s var(--about-ease-out);
}

.page-about .cert-item:hover {
  background: var(--about-panel-light);
  transform: translateX(4px);
}

.page-about .cert-item__icon {
  font-size: 12px;
  font-weight: 700;
  color: var(--about-accent);
  background: rgba(157, 0, 255, 0.08);
  border: 1px solid rgba(157, 0, 255, 0.35);
  padding: 10px 6px;
  text-align: center;
  letter-spacing: 0.1em;
}

.page-about .cert-item h3 {
  font-size: 17px;
  font-weight: 800;
  margin: 0 0 4px;
}

.page-about .cert-item p {
  margin: 0;
  font-size: 14px;
  color: var(--about-text-dim);
}

.page-about .cert-note {
  margin-top: var(--about-space-lg);
  font-size: 13px;
  color: var(--about-text-dim);
  border-top: 1px solid var(--about-border);
  padding-top: var(--about-space-md);
}

.page-about .cert-note a {
  color: var(--about-primary);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 102, 255, 0.4);
}

.page-about .cert-note a:hover {
  color: var(--about-text);
  border-bottom-color: var(--about-text);
}

.page-about .about-team {
  padding-block: var(--about-space-xxl);
  background: linear-gradient(90deg, rgba(6, 10, 16, 0.6) 0%, rgba(19, 26, 36, 0.4) 100%);
  border-top: 1px solid var(--about-border);
  border-bottom: 1px solid var(--about-border);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-space-xl);
  align-items: center;
}

.page-about .about-team__content .section-heading__label {
  margin-bottom: var(--about-space-md);
}

.page-about .about-team__content h2 {
  font-family: var(--about-font-heading);
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 800;
  line-height: 1.3;
  margin: 0 0 var(--about-space-md);
}

.page-about .about-team__content p {
  font-size: 15px;
  color: var(--about-text-dim);
  line-height: 1.7;
  margin-bottom: var(--about-space-md);
}

.page-about .about-team__content .btn {
  margin-top: var(--about-space-sm);
}

.page-about .about-team__visual {
  border: 1px solid var(--about-border);
  border-left: 4px solid var(--about-accent);
}

.page-about .about-eco {
  padding-block: var(--about-space-xxl);
}

.page-about .eco-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-space-md);
}

.page-about .eco-card {
  padding: var(--about-space-lg);
  background: var(--about-panel);
  border: 1px solid var(--about-border);
  position: relative;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-about .eco-card:hover {
  border-color: var(--about-primary);
  box-shadow: 0 0 0 1px rgba(0, 102, 255, 0.3);
}

.page-about .eco-card__num {
  font-size: 13px;
  color: var(--about-accent);
  letter-spacing: 0.1em;
  font-weight: 700;
}

.page-about .eco-card h3 {
  font-size: 18px;
  font-weight: 800;
  margin: var(--about-space-sm) 0 var(--about-space-sm);
}

.page-about .eco-card p {
  margin: 0;
  font-size: 14px;
  color: var(--about-text-dim);
  line-height: 1.7;
}

.page-about .about-award {
  padding-block: var(--about-space-xxl);
  background: var(--about-bg-deep);
  border-top: 1px solid var(--about-border);
}

.page-about .award-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-space-md);
}

.page-about .award-item {
  padding: var(--about-space-lg);
  background: rgba(19, 26, 36, 0.5);
  border-top: 2px solid var(--about-primary);
  display: flex;
  flex-direction: column;
  gap: var(--about-space-sm);
  transition: background-color 0.3s ease, transform 0.3s var(--about-ease-out);
}

.page-about .award-item:hover {
  background: rgba(19, 26, 36, 0.9);
  transform: translateY(-4px);
}

.page-about .award-item__stat {
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(90deg, var(--about-text) 20%, var(--about-primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-family: var(--about-font-mono);
  letter-spacing: -0.02em;
}

.page-about .award-item h3 {
  font-size: 16px;
  font-weight: 800;
  margin: 0;
}

.page-about .award-item p {
  margin: 0;
  font-size: 14px;
  color: var(--about-text-dim);
  line-height: 1.6;
}

.page-about .award-footnote {
  margin-top: var(--about-space-lg);
  font-size: 14px;
  color: var(--about-text-dim);
  border-top: 1px solid var(--about-border);
  padding-top: var(--about-space-md);
}

.page-about .award-footnote a {
  color: var(--about-primary);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 102, 255, 0.4);
}

.page-about .award-footnote a:hover {
  color: var(--about-text);
  border-bottom-color: var(--about-text);
}

@media (min-width: 768px) {
  .page-about .container {
    padding-inline: var(--about-space-lg);
  }

  .page-about .breadcrumb {
    padding-inline: var(--about-space-lg);
  }

  .page-about .about-hero {
    padding-block: 72px 96px;
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - 55px));
  }

  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
    gap: var(--about-space-xl);
  }

  .page-about .about-hero__meta {
    margin-top: 80px;
  }

  .page-about .about-intro__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(240px, 0.4fr);
    gap: var(--about-space-xl);
  }

  .page-about .about-intro__aside {
    border-top: none;
    border-left: 1px solid var(--about-border);
    padding-top: 0;
    padding-left: var(--about-space-lg);
    margin-top: 52px;
  }

  .page-about .hero-facts {
    grid-template-columns: 1fr 1fr;
    column-gap: var(--about-space-lg);
  }

  .page-about .about-hero__title {
    font-size: clamp(40px, 6vw, 68px);
  }

  .page-about .section-heading--row {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }

  .page-about .cert-badge-img {
    margin-top: 0;
    max-width: 260px;
  }

  .page-about .milestone-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .milestone-visual {
    position: sticky;
    top: 80px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.7fr);
    gap: var(--about-space-xxl);
  }

  .page-about .about-team__visual {
    order: 2;
  }

  .page-about .eco-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--about-space-md);
  }

  .page-about .award-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--about-space-md);
  }

  .page-about .cert-list {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--about-space-md);
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero__inner {
    gap: var(--about-space-xxl);
  }

  .page-about .about-hero__title {
    letter-spacing: 0.01em;
  }

  .page-about .milestone-item {
    grid-template-columns: 100px 1fr;
    gap: var(--about-space-xl);
  }

  .page-about .milestone-item__year {
    font-size: 16px;
  }
}

@media (max-width: 767px) {
  .page-about .about-hero {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 calc(100% - 24px));
  }

  .page-about .about-hero__meta .btn {
    width: 100%;
  }

  .page-about .cert-badge-img {
    width: 100%;
    max-width: 100%;
  }

  .page-about .about-team__visual {
    order: -1;
  }

  .page-about .milestone-visual {
    margin-bottom: var(--about-space-sm);
  }
}