.page-about {
  --about-glow: 0 0 24px rgba(168, 85, 247, 0.55), 0 0 48px rgba(0, 229, 255, 0.18);
  --about-kicker-color: var(--neon-purple);
}

.page-about .section {
  position: relative;
  padding-block: 52px;
}

@media (min-width: 768px) {
  .page-about .section {
    padding-block: 78px;
  }
}

.page-about .about-head {
  padding-top: 44px;
  padding-bottom: 36px;
  overflow: hidden;
}

.page-about .about-head::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--rose), var(--neon-purple), var(--electric-blue));
}

.page-about .about-head::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(0deg, transparent 0 18px, rgba(255, 255, 255, 0.025) 18px 19px);
  pointer-events: none;
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  position: relative;
  z-index: 1;
}

.page-about .breadcrumb a {
  color: var(--electric-blue);
  text-decoration: none;
}

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

.page-about .breadcrumb-sep {
  color: var(--line-mid);
}

.page-about .about-head-grid {
  display: grid;
  gap: 26px;
  margin-top: 34px;
  position: relative;
  z-index: 1;
}

@media (min-width: 900px) {
  .page-about .about-head-grid {
    grid-template-columns: minmax(0, 2.1fr) minmax(260px, 0.9fr);
    align-items: start;
  }
}

.page-about .head-kicker {
  font-family: var(--font-heading);
  font-size: 13px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--electric-blue);
  margin: 0 0 14px;
}

.page-about .about-head-main h1 {
  font-family: var(--font-heading);
  font-size: clamp(40px, 7vw, 72px);
  line-height: 1.04;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  margin: 0 0 20px;
  text-shadow: var(--about-glow);
}

.page-about .head-lead {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-secondary);
  max-width: 64ch;
  margin: 0;
}

.page-about .head-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-head-note {
  position: relative;
  background: var(--warm-paper);
  color: var(--text-on-warm);
  padding: 24px 22px 22px;
  transform: rotate(1.4deg);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

.page-about .about-head-note p {
  font-size: 13px;
  line-height: 1.9;
  margin: 0;
}

.page-about .note-rot {
  display: inline-block;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--rose);
  position: absolute;
  top: 14px;
  right: -2px;
}

.page-about .page-toc {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 14px 16px;
  background: var(--bg-panel);
  border-inline-start: 3px solid var(--electric-blue);
  margin-bottom: 8px;
  position: relative;
}

.page-about .page-toc::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -4px;
  width: 96px;
  height: 4px;
  background: linear-gradient(90deg, transparent, var(--rose));
}

.page-about .toc-label {
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--rose);
  margin-inline-end: 8px;
}

.page-about .page-toc a {
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 5px 9px;
  border: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .page-toc a:hover {
  color: var(--electric-blue);
  border-color: var(--line-mid);
}

.page-about .section-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 13px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--neon-purple);
  margin: 0 0 12px;
}

@media (min-width: 768px) {
  .page-about .section-kicker {
    font-size: 14px;
  }
}

.page-about .kicker-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding-inline: 6px;
  background: var(--neon-purple);
  color: #ffffff;
  font-size: 12px;
  letter-spacing: 0.04em;
  transform: skewX(-8deg);
}

.page-about .section h2 {
  font-family: var(--font-heading);
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.2;
  color: var(--text-primary);
  margin: 0 0 16px;
  padding-inline-start: 14px;
  position: relative;
}

.page-about .section h2::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  background: linear-gradient(180deg, var(--rose), var(--neon-purple), var(--electric-blue));
}

.page-about .section h3 {
  font-family: var(--font-heading);
  font-size: 17px;
  line-height: 1.3;
  color: var(--text-primary);
  margin: 0 0 8px;
}

.page-about .origin-grid {
  display: grid;
  gap: 28px;
}

@media (min-width: 900px) {
  .page-about .origin-grid {
    grid-template-columns: 1.1fr 0.9fr 0.5fr;
    align-items: start;
  }
}

.page-about .origin-section::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 220px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--electric-blue), var(--rose));
}

.page-about .origin-text p {
  font-size: 14px;
  line-height: 1.95;
  color: var(--text-secondary);
  margin: 0 0 14px;
}

.page-about .origin-text p:first-of-type::first-letter {
  font-family: var(--font-heading);
  font-size: 42px;
  float: left;
  line-height: 0.9;
  color: var(--rose);
  margin: 6px 8px 0 0;
}

.page-about .origin-figure {
  margin: 0;
  transform: rotate(-1.2deg);
  box-shadow: 8px 8px 0 rgba(168, 85, 247, 0.22);
}

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

.page-about .figure-frame figcaption {
  margin-top: 10px;
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.page-about .origin-note {
  position: relative;
  background: var(--warm-paper);
  color: var(--text-on-warm);
  padding: 26px 22px 22px;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}

.page-about .origin-note::before {
  content: "※";
  position: absolute;
  top: 8px;
  right: 12px;
  color: var(--rose);
  font-size: 20px;
}

.page-about .note-label {
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--rose);
}

.page-about .origin-note p {
  font-family: var(--font-heading);
  font-size: 18px;
  line-height: 1.5;
  margin: 10px 0 0;
}

.page-about .origin-note .note-small {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: normal;
  line-height: 1.7;
  color: inherit;
  opacity: 0.72;
}

.page-about .origin-note .note-large {
  font-family: var(--font-heading);
  font-size: 36px;
  color: var(--rose);
  margin-top: 14px;
  line-height: 1;
}

.page-about .origin-note .note-large em {
  font-style: normal;
  font-size: 14px;
  font-family: var(--font-body);
  color: var(--text-on-warm);
  margin-inline-start: 6px;
}

.page-about .stats-section {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.12), rgba(0, 229, 255, 0.06)), var(--bg-panel);
  border-block: 1px solid var(--line-dark);
}

.page-about .stats-strip {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(150px, 1fr);
  gap: 12px;
  overflow-x: auto;
  padding-block: 26px;
  scroll-snap-type: x mandatory;
}

@media (min-width: 768px) {
  .page-about .stats-strip {
    grid-template-columns: repeat(5, 1fr);
    grid-auto-flow: row;
    grid-auto-columns: auto;
    overflow: visible;
  }
}

.page-about .stat-cell {
  position: relative;
  padding: 18px 16px 20px;
  background: var(--bg-panel-2);
  border-inline-start: 3px solid var(--electric-blue);
  scroll-snap-align: start;
}

.page-about .stat-cell::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--line-mid) 0 6px, transparent 6px 12px);
}

.page-about .stat-num {
  display: block;
  font-family: var(--font-heading);
  font-size: 40px;
  line-height: 1;
  color: var(--rose);
  letter-spacing: 0.01em;
}

.page-about .stat-label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-top: 9px;
}

.page-about .stat-unit {
  position: absolute;
  top: 22px;
  right: 12px;
  writing-mode: vertical-rl;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--electric-blue);
}

.page-about .section-head-row {
  display: grid;
  gap: 16px;
  margin-bottom: 32px;
}

@media (min-width: 900px) {
  .page-about .section-head-row {
    grid-template-columns: 1fr auto;
    align-items: end;
  }
}

.page-about .timeline-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .timeline-filter .filter-btn {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--line-mid);
  padding: 8px 14px;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-about .timeline-filter .filter-btn:hover,
.page-about .timeline-filter .filter-btn[data-active] {
  color: var(--electric-blue);
  border-color: var(--electric-blue);
  background: rgba(0, 229, 255, 0.08);
}

.page-about .timeline-wrap {
  display: grid;
  gap: 28px;
}

@media (min-width: 960px) {
  .page-about .timeline-wrap {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: start;
  }
}

.page-about .timeline-list {
  position: relative;
  padding-inline-start: 28px;
}

.page-about .timeline-list::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 4px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--neon-purple), var(--electric-blue), var(--rose));
}

.page-about .timeline-item {
  position: relative;
  margin-bottom: 20px;
}

.page-about .timeline-marker {
  position: absolute;
  left: -28px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--electric-blue);
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 0 2px var(--neon-purple), 0 0 14px rgba(0, 229, 255, 0.5);
  z-index: 1;
}

.page-about .timeline-year {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--rose);
  margin-bottom: 6px;
}

@media (min-width: 768px) {
  .page-about .timeline-year {
    font-size: 16px;
  }
}

.page-about .timeline-card {
  background: var(--bg-panel);
  border: 1px solid var(--line-dark);
  border-inline-start: 3px solid transparent;
  padding: 18px 18px 16px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-about .timeline-item:hover .timeline-card,
.page-about .timeline-item:focus-within .timeline-card {
  transform: translateX(6px);
  border-inline-start-color: var(--rose);
  box-shadow: 8px 8px 0 rgba(0, 229, 255, 0.12);
}

.page-about .timeline-preview {
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin: 0;
}

.page-about .timeline-detail {
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin: 10px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line-mid);
}

@media (hover: hover) {
  .page-about .timeline-detail {
    display: none;
  }

  .page-about .timeline-item:hover .timeline-detail,
  .page-about .timeline-item:focus-within .timeline-detail {
    display: block;
  }
}

.page-about .timeline-figure {
  margin: 0;
}

.page-about .timeline-figure img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  transform: rotate(1.5deg);
  box-shadow: 6px 6px 0 rgba(255, 46, 136, 0.2);
}

@media (min-width: 960px) {
  .page-about .timeline-figure {
    position: sticky;
    top: 24px;
  }
}

@media (max-width: 959px) {
  .page-about .timeline-figure {
    max-width: 420px;
  }

  .page-about .timeline-wrap {
    justify-items: center;
  }
}

.page-about .cert-section {
  background: linear-gradient(200deg, rgba(0, 229, 255, 0.1), transparent 42%), var(--bg-panel);
  border-block: 1px solid var(--line-dark);
}

.page-about .cert-layout {
  display: grid;
  gap: 24px;
}

@media (min-width: 900px) {
  .page-about .cert-layout {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .page-about .cert-note {
    grid-column: 1 / -1;
    max-width: 680px;
  }
}

.page-about .cert-intro p {
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-secondary);
  margin: 0;
  max-width: 60ch;
}

.page-about .cert-tags {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .cert-tag {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-panel-2);
  padding: 22px 20px;
  position: relative;
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.page-about .cert-tag::after {
  content: "";
  position: absolute;
  right: -20px;
  top: -20px;
  width: 60px;
  height: 60px;
  background: var(--neon-purple);
  opacity: 0.16;
  transform: rotate(45deg);
}

.page-about .cert-tag:nth-child(2)::after {
  background: var(--electric-blue);
}

.page-about .cert-tag:nth-child(3)::after {
  background: var(--rose);
}

.page-about .cert-index {
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--electric-blue);
  border: 1px solid var(--line-mid);
  min-width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-shadow: 0 0 10px rgba(0, 229, 255, 0.35);
}

.page-about .cert-name {
  font-family: var(--font-heading);
  font-size: 16px;
  color: var(--text-primary);
}

.page-about .cert-note {
  background: var(--warm-paper);
  color: var(--text-on-warm);
  padding: 18px 22px;
  font-size: 14px;
  line-height: 1.85;
  border-inline-start: 4px solid var(--rose);
}

.page-about .cert-note p {
  margin: 0;
}

.page-about .team-grid {
  display: grid;
  gap: 28px;
}

@media (min-width: 900px) {
  .page-about .team-grid {
    grid-template-columns: 1fr 0.85fr;
    align-items: start;
  }
}

.page-about .team-text > p {
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-secondary);
  margin: 0 0 20px;
  max-width: 62ch;
}

.page-about .team-roles {
  display: grid;
  gap: 16px;
}

@media (min-width: 700px) and (max-width: 899px) {
  .page-about .team-roles {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1200px) {
  .page-about .team-roles {
    grid-template-columns: 1fr 1fr;
  }
}

.page-about .role-cell {
  background: var(--bg-panel);
  border: 1px solid var(--line-dark);
  border-top: 3px solid var(--neon-purple);
  padding: 20px 18px;
}

.page-about .role-cell:nth-child(2) {
  border-top-color: var(--electric-blue);
}

.page-about .role-num {
  display: block;
  font-family: var(--font-heading);
  font-size: 44px;
  line-height: 1;
  color: var(--neon-purple);
}

.page-about .role-cell:nth-child(2) .role-num {
  color: var(--electric-blue);
}

.page-about .role-name {
  display: block;
  font-family: var(--font-heading);
  font-size: 16px;
  color: var(--text-primary);
  margin-top: 8px;
}

.page-about .role-cell p {
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin: 8px 0 0;
}

.page-about .team-figure {
  margin: 0;
}

.page-about .team-figure img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  transform: rotate(1deg);
  box-shadow: 8px 8px 0 rgba(168, 85, 247, 0.18);
}

.page-about .team-note {
  background: var(--warm-paper);
  color: var(--text-on-warm);
  padding: 18px 20px;
  font-size: 13px;
  line-height: 1.85;
  position: relative;
}

@media (min-width: 900px) {
  .page-about .team-note {
    margin-top: 20px;
  }
}

.page-about .team-note::before {
  content: "◈";
  position: absolute;
  top: 10px;
  right: 14px;
  color: var(--rose);
  font-size: 18px;
}

.page-about .team-note p {
  margin: 0;
}

.page-about .partner-lead {
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-secondary);
  max-width: 62ch;
  margin: 0 0 28px;
}

.page-about .partner-grid {
  display: grid;
  gap: 16px;
}

@media (min-width: 640px) {
  .page-about .partner-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1100px) {
  .page-about .partner-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.page-about .partner-card {
  background: var(--bg-panel);
  border: 1px solid var(--line-dark);
  padding: 24px 20px 20px;
  position: relative;
  transition: transform 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
}

.page-about .partner-card:hover {
  transform: translateY(-6px);
  border-color: var(--neon-purple);
  background: var(--bg-panel-2);
}

.page-about .partner-index {
  position: absolute;
  top: 12px;
  right: 14px;
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--line-mid);
}

.page-about .partner-card p {
  font-size: 12px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0;
}

.page-about .honor-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.page-about .honor-tag {
  font-family: var(--font-heading);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--electric-blue);
  border: 1px solid var(--line-mid);
  padding: 10px 18px;
  transform: skewX(-6deg);
  background: rgba(0, 229, 255, 0.06);
}

.page-about .philosophy-section {
  background: linear-gradient(140deg, rgba(168, 85, 247, 0.2), rgba(255, 46, 136, 0.12) 55%, rgba(0, 229, 255, 0.16)), var(--bg-primary);
  border-block: 1px solid var(--line-dark);
  overflow: hidden;
}

.page-about .philosophy-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(168, 85, 247, 0.2), rgba(0, 229, 255, 0.12) 48%, rgba(255, 46, 136, 0.16));
  opacity: calc(0.4 + var(--progress, 0) * 0.6);
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.page-about .philosophy-section::after {
  content: "";
  position: absolute;
  inset-inline-start: -10%;
  top: 0;
  width: 120%;
  height: 100%;
  background: repeating-linear-gradient(100deg, transparent 0 32px, rgba(255, 255, 255, 0.03) 32px 33px);
  pointer-events: none;
}

.page-about .philosophy-inner {
  position: relative;
  z-index: 1;
}

.page-about .philosophy-statement {
  font-size: 16px;
  line-height: 2;
  color: var(--text-primary);
  max-width: 68ch;
  margin: 0 0 36px;
  border-inline-start: 3px solid var(--electric-blue);
  padding-inline-start: 20px;
}

.page-about .philosophy-cols {
  display: grid;
  gap: 16px;
}

@media (min-width: 760px) {
  .page-about .philosophy-cols {
    grid-template-columns: repeat(3, 1fr);
  }
}

.page-about .philosophy-item {
  background: rgba(22, 22, 30, 0.88);
  border: 1px solid var(--line-dark);
  padding: 22px 20px;
}

.page-about .ph-item-num {
  display: block;
  font-family: var(--font-heading);
  font-size: 30px;
  line-height: 1;
  color: var(--rose);
  opacity: 0.85;
}

.page-about .philosophy-item p {
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin: 0;
}

.page-about .page-index {
  padding-block: 48px 64px;
  background: var(--bg-panel);
  border-top: 1px solid var(--line-dark);
}

.page-about .index-title {
  font-family: var(--font-heading);
  font-size: 14px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin: 0 0 24px;
}

.page-about .index-links {
  display: grid;
  gap: 12px;
}

@media (min-width: 800px) {
  .page-about .index-links {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1100px) {
  .page-about .index-links {
    grid-template-columns: repeat(5, 1fr);
  }
}

.page-about .index-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px;
  background: var(--bg-panel-2);
  border: 1px solid var(--line-dark);
  text-decoration: none;
  position: relative;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-about .index-link:hover {
  border-color: var(--electric-blue);
  transform: translateY(-4px);
}

.page-about .index-link .link-num {
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--rose);
}

.page-about .index-link .link-name {
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--text-primary);
}

.page-about .index-link .link-desc {
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.page-about {
  --progress: 1;
}