.page-about {
  --about-orange: #FF6B35;
  --about-purple: #7B61FF;
  --about-line: rgba(160, 196, 232, 0.18);
  --about-bg-deep: rgba(11, 30, 54, 0.6);
  background: var(--lb-bg);
  color: var(--lb-text);
  overflow-x: hidden;
  padding-bottom: 0;
}

.page-about .breadcrumbs {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px 24px 0;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--lb-text-muted);
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-about .breadcrumbs a {
  color: var(--lb-text-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .breadcrumbs a:hover {
  color: var(--lb-accent);
  border-color: var(--lb-accent);
}

.page-about .breadcrumbs [aria-current="page"] {
  color: var(--lb-text);
  font-weight: 600;
}

/* ===== HERO ===== */
.page-about .about-hero {
  max-width: 1440px;
  margin: 0 auto;
  padding: 56px 24px 72px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  position: relative;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 24px;
  width: max(240px, 30vw);
  height: 64px;
  background: linear-gradient(100deg, transparent 30%, rgba(57, 255, 136, 0.14), transparent 70%);
  transform: skewX(-12deg);
  pointer-events: none;
}

.page-about .about-hero__copy h1 {
  font-family: var(--lb-font-headline);
  font-weight: 900;
  font-size: clamp(44px, 9vw, 108px);
  line-height: 0.98;
  margin: 16px 0 24px;
  letter-spacing: 0.02em;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-hero__copy h1 span:nth-child(1) {
  color: var(--lb-text);
}

.page-about .about-hero__copy h1 span:nth-child(2) {
  color: var(--lb-accent);
  -webkit-text-stroke: 1px rgba(57, 255, 136, 0.6);
  text-shadow: 8px 8px 0 rgba(57, 255, 136, 0.12);
}

.page-about .about-hero__copy h1 span:nth-child(3) {
  color: var(--lb-purple);
  margin-left: clamp(0px, 6vw, 80px);
}

.page-about .about-hero__lead {
  max-width: 560px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--lb-text-muted);
  border-left: 3px solid var(--lb-accent);
  padding-left: 18px;
  margin-top: 28px;
}

.page-about .about-hero__panel {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border: 1px solid var(--about-line);
  background: rgba(21, 42, 69, 0.62);
  position: relative;
  backdrop-filter: blur(2px);
}

.page-about .about-hero__stat {
  padding: 28px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-right: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
  position: relative;
  z-index: 1;
}

.page-about .about-hero__stat:nth-child(2n) {
  border-right: none;
}

.page-about .about-hero__stat:nth-child(n+3) {
  border-bottom: none;
}

.page-about .data-number-lg {
  font-family: var(--lb-font-data);
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  color: var(--lb-accent);
  line-height: 1;
}

.page-about .about-hero__stat-label {
  font-size: 13px;
  color: var(--lb-text-muted);
  letter-spacing: 0.08em;
}

.page-about .about-hero__glow {
  position: absolute;
  width: 120px;
  height: 120px;
  right: -40px;
  bottom: -40px;
  background: radial-gradient(circle, rgba(57, 255, 136, 0.22), transparent 70%);
  z-index: 0;
  pointer-events: none;
}

.page-about .about-hero__diag {
  position: absolute;
  top: -12px;
  left: -12px;
  width: 24px;
  height: 24px;
  border-top: 3px solid var(--about-purple);
  border-left: 3px solid var(--about-purple);
  z-index: 2;
  pointer-events: none;
}

.page-about .about-hero__stamp {
  position: absolute;
  top: 16px;
  right: 16px;
  display: none;
  writing-mode: vertical-rl;
  font-family: var(--lb-font-headline);
  font-weight: 900;
  font-size: 22px;
  line-height: 1.25;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 107, 53, 0.8);
  letter-spacing: 0.4em;
  opacity: 0.6;
  pointer-events: none;
}

/* ===== MISSION ===== */
.page-about .about-mission {
  max-width: 1440px;
  margin: 0 auto;
  padding: 80px 24px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  position: relative;
}

.page-about .about-mission::before {
  content: "使命";
  position: absolute;
  top: 20px;
  right: 16px;
  font-size: clamp(64px, 10vw, 140px);
  font-weight: 900;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(123, 97, 255, 0.22);
  pointer-events: none;
  z-index: 0;
}

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

.page-about .about-mission__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--about-line);
  filter: saturate(1.1) contrast(1.05);
}

.page-about .about-mission__media::before {
  content: "";
  position: absolute;
  top: 16px;
  bottom: -16px;
  right: -16px;
  width: 30%;
  background: linear-gradient(140deg, rgba(57, 255, 136, 0.2), rgba(123, 97, 255, 0.16));
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  z-index: -1;
}

.page-about .about-mission__media-note {
  position: absolute;
  bottom: 18px;
  left: 18px;
  background: rgba(11, 30, 54, 0.8);
  border-left: 3px solid var(--lb-accent);
  padding: 8px 14px;
  font-family: var(--lb-font-data);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--lb-accent);
}

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

.page-about .about-mission__body h2,
.page-about .about-milestone__head h2,
.page-about .about-scale h2,
.page-about .about-team__intro h2 {
  font-family: var(--lb-font-headline);
  font-weight: 900;
  font-size: clamp(30px, 5vw, 56px);
  line-height: 1.1;
  margin: 10px 0 24px;
  position: relative;
}

.page-about .about-mission__body h2::after,
.page-about .about-milestone__head h2::after,
.page-about .about-scale h2::after,
.page-about .about-team__intro h2::after {
  content: "";
  display: block;
  width: 48px;
  height: 4px;
  background: var(--about-orange);
  margin-top: 14px;
  clip-path: polygon(0 0, 100% 0, 85% 100%, 0 100%);
}

.page-about .about-mission__body p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--lb-text-muted);
  margin-bottom: 20px;
}

.page-about .about-mission__body p:first-of-type {
  font-size: 18px;
  color: var(--lb-text);
}

.page-about .about-mission__quote {
  margin: 32px 0 0;
  padding: 24px 24px 24px 32px;
  border-left: 4px solid var(--lb-accent);
  background: linear-gradient(90deg, rgba(57, 255, 136, 0.08), transparent);
  font-family: var(--lb-font-headline);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.5;
  color: var(--lb-text);
}

/* ===== MILESTONE ===== */
.page-about .about-milestone {
  max-width: 1440px;
  margin: 0 auto;
  padding: 64px 24px 80px;
  position: relative;
}

.page-about .about-milestone::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 60%;
  width: 40%;
  background: linear-gradient(90deg, transparent, rgba(57, 255, 136, 0.03));
  border-left: 1px dashed rgba(123, 97, 255, 0.3);
  pointer-events: none;
}

.page-about .about-milestone__head {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 40px;
  position: relative;
  z-index: 1;
}

.page-about .about-milestone__note {
  max-width: 400px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--lb-text-muted);
}

.page-about .about-milestone__track {
  position: relative;
  z-index: 1;
  overflow-x: auto;
  padding-bottom: 12px;
  scrollbar-width: thin;
  scrollbar-color: var(--lb-accent) var(--lb-bg-card);
  -webkit-overflow-scrolling: touch;
}

.page-about .about-milestone__track::-webkit-scrollbar {
  height: 6px;
}

.page-about .about-milestone__track::-webkit-scrollbar-thumb {
  background: var(--lb-accent);
  border-radius: 0;
}

.page-about .milestone-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 24px;
  min-width: max-content;
  position: relative;
}

.page-about .milestone-list::before {
  content: "";
  position: absolute;
  top: 52px;
  left: 24px;
  right: 24px;
  height: 3px;
  background: linear-gradient(90deg, var(--lb-accent) 0%, var(--lb-purple) 55%, var(--about-orange) 100%);
  transform: skewY(-3deg);
  opacity: 0.8;
}

.page-about .milestone-item {
  width: 240px;
  flex-shrink: 0;
  padding-top: 84px;
  position: relative;
}

.page-about .milestone-item__marker {
  position: absolute;
  top: 0;
  left: 0;
  width: 84px;
  height: 64px;
  background: var(--lb-bg-card);
  border: 1px solid var(--lb-accent);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-about .milestone-item__marker span {
  font-family: var(--lb-font-data);
  font-weight: 700;
  font-size: 22px;
  color: var(--lb-accent);
}

.page-about .milestone-item__marker::after {
  content: "";
  position: absolute;
  right: -8px;
  top: 20px;
  width: 16px;
  height: 16px;
  background: var(--lb-bg);
  border: 3px solid var(--about-purple);
  border-radius: 50%;
}

.page-about .milestone-item__card {
  background: rgba(21, 42, 69, 0.7);
  border: 1px solid var(--about-line);
  padding: 24px 20px 28px;
  min-height: 220px;
  position: relative;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.page-about .milestone-item__card:hover {
  background: rgba(21, 42, 69, 0.95);
  border-color: rgba(57, 255, 136, 0.5);
}

.page-about .milestone-item__card::before {
  content: attr(data-index);
  position: absolute;
  top: -14px;
  right: 12px;
  font-family: var(--lb-font-headline);
  font-weight: 900;
  font-size: 40px;
  color: transparent;
  -webkit-text-stroke: 1px rgba(123, 97, 255, 0.4);
  pointer-events: none;
}

.page-about .milestone-item__card h3 {
  font-family: var(--lb-font-headline);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.4;
  margin: 0 0 14px;
  color: var(--lb-text);
}

.page-about .milestone-item__card p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--lb-text-muted);
  margin: 0;
}

.page-about .about-milestone__media {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 48px;
  position: relative;
  z-index: 1;
}

.page-about .about-milestone__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--about-line);
}

.page-about .about-milestone__media-caption {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 16px;
  background: rgba(21, 42, 69, 0.55);
  border-left: 3px solid var(--about-orange);
}

.page-about .about-milestone__media-caption .data-number {
  font-family: var(--lb-font-data);
  font-weight: 700;
  font-size: 22px;
  color: var(--lb-accent);
}

.page-about .about-milestone__media-caption span:last-child {
  margin-left: auto;
  font-size: 13px;
  color: var(--lb-text-muted);
}

/* ===== SCALE ===== */
.page-about .about-scale {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

.page-about .about-scale__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .about-scale__cell {
  background: rgba(11, 30, 54, 0.92);
  padding: 36px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
}

.page-about .about-scale__cell:nth-child(3n+1) {
  border-bottom: 3px solid var(--lb-accent);
}

.page-about .about-scale__cell:nth-child(3n+2) {
  border-bottom: 3px solid var(--about-purple);
}

.page-about .about-scale__cell:nth-child(3n+3) {
  border-bottom: 3px solid var(--about-orange);
}

.page-about .about-scale__num {
  font-family: var(--lb-font-data);
  font-weight: 700;
  font-size: clamp(34px, 5vw, 48px);
  line-height: 1;
  color: var(--lb-accent);
  letter-spacing: -0.02em;
}

.page-about .about-scale__desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--lb-text-muted);
  max-width: 220px;
}

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

.page-about .about-scale__cell--wide p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--lb-text-muted);
  margin: 0;
  max-width: 720px;
}

/* ===== TEAM ===== */
.page-about .about-team {
  max-width: 1440px;
  margin: 0 auto;
  padding: 80px 24px 96px;
  position: relative;
}

.page-about .about-team::before {
  content: "TEAM";
  position: absolute;
  top: 40px;
  left: 40px;
  font-family: var(--lb-font-headline);
  font-weight: 900;
  font-size: clamp(80px, 12vw, 180px);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(57, 255, 136, 0.1);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-team__intro {
  position: relative;
  z-index: 1;
  max-width: 680px;
}

.page-about .about-team__intro > p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--lb-text-muted);
}

.page-about .about-team__card-group {
  margin: 40px 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  position: relative;
  z-index: 1;
}

.page-about .about-team__card {
  background: linear-gradient(135deg, rgba(21, 42, 69, 0.9), rgba(11, 30, 54, 0.95));
  border: 1px solid var(--about-line);
  padding: 32px 28px;
  position: relative;
}

.page-about .about-team__card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: repeating-linear-gradient(90deg, var(--lb-accent) 0 12px, transparent 12px 24px);
}

.page-about .about-team__card:nth-child(2)::before {
  background: repeating-linear-gradient(90deg, var(--about-purple) 0 12px, transparent 12px 24px);
}

.page-about .about-team__card:nth-child(3)::before {
  background: repeating-linear-gradient(90deg, var(--about-orange) 0 12px, transparent 12px 24px);
}

.page-about .about-team__card-index {
  font-family: var(--lb-font-data);
  font-size: 14px;
  font-weight: 700;
  color: var(--lb-accent);
  letter-spacing: 0.1em;
}

.page-about .about-team__card h3 {
  font-family: var(--lb-font-headline);
  font-weight: 800;
  font-size: 22px;
  margin: 12px 0 14px;
  color: var(--lb-text);
}

.page-about .about-team__card p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--lb-text-muted);
  margin: 0;
}

.page-about .about-team__media {
  margin: 48px 0 40px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  position: relative;
  z-index: 1;
}

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--about-line);
  transform: skewY(0deg);
}

.page-about .about-team__media::before {
  content: "";
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 60%;
  background: radial-gradient(ellipse, rgba(57, 255, 136, 0.12), transparent 70%);
  z-index: -1;
}

.page-about .about-team__media-note {
  font-family: var(--lb-font-data);
  font-size: 14px;
  letter-spacing: 0.22em;
  color: var(--lb-accent);
  text-align: center;
  text-transform: uppercase;
  padding: 12px 0;
  border-top: 1px dashed var(--about-line);
  border-bottom: 1px dashed var(--about-line);
}

.page-about .about-team__links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  position: relative;
  z-index: 1;
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  font-family: var(--lb-font-body);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease, transform 0.2s ease;
  cursor: pointer;
}

.page-about .btn:hover {
  transform: translateY(-2px);
}

.page-about .btn-primary {
  background: var(--lb-accent);
  color: var(--lb-bg);
  border: 2px solid var(--lb-accent);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}

.page-about .btn-primary:hover {
  background: transparent;
  color: var(--lb-accent);
}

.page-about .btn-ghost {
  background: transparent;
  color: var(--lb-text-muted);
  border: 2px solid var(--about-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}

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

/* ===== MEDIA QUERIES ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
    min-height: calc(100vh - 140px);
    align-items: center;
    padding: 72px 32px 80px;
  }

  .page-about .about-hero__stamp {
    display: block;
    top: 16px;
    right: 24px;
  }

  .page-about .about-hero__panel {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about .about-mission {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    padding: 100px 32px;
  }

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

  .page-about .about-milestone {
    padding: 80px 32px 96px;
  }

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

  .page-about .about-milestone__note {
    text-align: right;
    margin-bottom: 10px;
  }

  .page-about .about-milestone__track {
    padding: 8px 0 20px;
  }

  .page-about .milestone-item {
    width: 280px;
  }

  .page-about .about-milestone__media {
    grid-template-columns: 1fr 260px;
    align-items: stretch;
  }

  .page-about .about-milestone__media img {
    aspect-ratio: auto;
    height: 100%;
    max-height: 320px;
  }

  .page-about .about-milestone__media-caption {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
  }

  .page-about .about-milestone__media-caption span:last-child {
    margin-left: 0;
  }

  .page-about .about-scale {
    padding: 0 32px 100px;
  }

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

  .page-about .about-scale__cell {
    padding: 44px 32px;
  }

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

  .page-about .about-team {
    padding: 100px 32px 120px;
  }

  .page-about .about-team__card-group {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-about .about-team__media {
    grid-template-columns: minmax(0, 2fr) minmax(240px, 1fr);
    align-items: center;
  }

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

  .page-about .about-team__media-note {
    border-top: none;
    border-bottom: none;
    border-left: 3px solid var(--lb-accent);
    text-align: left;
    padding: 20px;
  }
}

@media (min-width: 1200px) {
  .page-about .breadcrumbs {
    padding-left: 40px;
    padding-right: 40px;
  }

  .page-about .about-hero {
    padding: 72px 48px 88px;
  }

  .page-about .about-mission {
    padding: 120px 48px;
  }

  .page-about .about-milestone {
    padding: 96px 48px 112px;
  }

  .page-about .about-milestone__track {
    overflow: visible;
  }

  .page-about .milestone-list {
    min-width: 0;
    justify-content: space-between;
  }

  .page-about .milestone-item {
    width: calc((100% - 120px) / 6);
  }

  .page-about .about-scale {
    padding: 0 48px 120px;
  }

  .page-about .about-team {
    padding: 120px 48px 140px;
  }
}

@media (min-width: 1440px) {
  .page-about .about-hero {
    padding-left: 64px;
    padding-right: 64px;
  }

  .page-about .about-mission {
    padding-left: 64px;
    padding-right: 64px;
  }

  .page-about .about-milestone {
    padding-left: 64px;
    padding-right: 64px;
  }

  .page-about .about-scale {
    padding-left: 64px;
    padding-right: 64px;
  }

  .page-about .about-team {
    padding-left: 64px;
    padding-right: 64px;
  }
}

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