.page-about {
  --about-neon: #00FF88;
  --about-orange: #FF6F00;
  --about-warn: #FF4D00;
  --about-space: #0F1A2F;
  --about-space-light: #1E2A4A;
  --about-space-soft: #2A3B6D;
  --about-text-dim: #B0C4DE;
  --about-line: 1px solid rgba(176, 196, 222, 0.16);
  --about-line-neon: 1px solid rgba(0, 255, 136, 0.2);
  background-color: var(--about-space);
  color: #FFFFFF;
  font-family: "Source Han Sans SC", "PingFang SC", sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}

.page-about .page-hero-about {
  position: relative;
  padding: 7rem 0 3.5rem;
  background:
    linear-gradient(135deg, rgba(30, 42, 74, 0.92) 0%, rgba(15, 26, 47, 0.98) 60%),
    repeating-linear-gradient(0deg, transparent 0 23px, rgba(0, 255, 136, 0.06) 24px);
  clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
  border-bottom: 1px solid var(--about-line-neon);
}

.page-about .hero-about-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.page-about .hero-about-copy h1 {
  font-family: "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(2.2rem, 5vw, 4.2rem);
  font-weight: 900;
  line-height: 1.16;
  margin: 0.8rem 0 1.2rem;
  letter-spacing: -0.01em;
  max-width: 14em;
}

.page-about .hero-about-copy .lead {
  font-size: 1.15rem;
  color: var(--about-text-dim);
  max-width: 46em;
  margin-bottom: 1.8rem;
}

.page-about .hero-about-panel {
  position: relative;
  background: var(--about-space-light);
  border: 1px solid rgba(0, 255, 136, 0.16);
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.page-about .hero-about-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 92px;
  height: 4px;
  background: linear-gradient(90deg, var(--about-neon) 0%, transparent 100%);
}

.page-about .hero-about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.2rem;
}

.page-about .hero-stat {
  padding: 0.8rem 0.2rem;
  border-bottom: 1px solid var(--about-line);
}

.page-about .hero-stat-num {
  display: block;
  font-family: "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  font-size: 1.9rem;
  font-weight: 900;
  color: var(--about-neon);
  letter-spacing: 0.02em;
}

.page-about .hero-stat-label {
  font-size: 0.85rem;
  color: var(--about-text-dim);
}

.page-about .vertical-note {
  writing-mode: vertical-rl;
  font-size: 0.8rem;
  letter-spacing: 0.38em;
  color: var(--about-orange);
  text-transform: uppercase;
  align-self: flex-end;
}

.page-about .mission-section {
  padding: 4.5rem 0;
  position: relative;
}

.page-about .mission-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.page-about .mission-copy h2 {
  font-family: "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 900;
  margin: 0.6rem 0 1.2rem;
  line-height: 1.2;
}

.page-about .mission-copy p {
  color: var(--about-text-dim);
  margin-bottom: 1rem;
  max-width: 48em;
}

.page-about .mission-points {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.6rem;
}

.page-about .mission-point {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--about-space-light);
  padding: 0.45rem 0.8rem;
  border-left: 3px solid var(--about-orange);
}

.page-about .mission-point-index {
  font-family: monospace;
  font-size: 0.8rem;
  color: var(--about-neon);
}

.page-about .mission-image-col {
  position: relative;
}

.page-about .brand-story-img,
.page-about .timeline-visual,
.page-about .partner-image-wrap img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--about-line);
}

.page-about .mission-note-card {
  position: relative;
  z-index: 2;
  background: var(--about-space-light);
  border-left: 4px solid var(--about-neon);
  padding: 1rem 1.2rem;
  margin-top: 1rem;
}

.page-about .mission-note-card .mono {
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--about-neon);
  letter-spacing: 0.2em;
}

.page-about .mission-note-card p {
  color: #FFFFFF;
  font-size: 0.92rem;
  margin: 0.35rem 0 0;
}

.page-about .timeline-section {
  padding: 4.5rem 0;
  position: relative;
  background: linear-gradient(180deg, var(--about-space) 0%, #0B1424 70%, var(--about-space) 100%);
}

.page-about .timeline-section .section-meta,
.page-about .scale-section .section-meta,
.page-about .tech-section .section-meta,
.page-about .partner-section .section-meta,
.page-about .recog-section .section-meta,
.page-about .cta-section .section-meta {
  font-family: monospace;
  font-size: 0.8rem;
  color: var(--about-orange);
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.page-about .timeline-section h2,
.page-about .scale-section h2,
.page-about .tech-section h2,
.page-about .partner-section h2,
.page-about .recog-section h2,
.page-about .cta-section h2 {
  font-family: "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(1.7rem, 3.6vw, 2.8rem);
  font-weight: 900;
  margin: 0.4rem 0 1rem;
  line-height: 1.2;
}

.page-about .timeline-section .lead,
.page-about .partner-section .lead {
  color: var(--about-text-dim);
  max-width: 40em;
}

.page-about .timeline-wrap {
  position: relative;
  max-width: 1120px;
  margin: 2rem auto 0;
  padding: 0 1.5rem;
}

.page-about .timeline-rail {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  position: relative;
}

.page-about .timeline-rail::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 0;
  bottom: 0;
  width: 2px;
  border-left: 2px dashed rgba(0, 255, 136, 0.35);
}

.page-about .timeline-node {
  position: relative;
  padding-left: 2.2rem;
  margin-bottom: 2.2rem;
}

.page-about .timeline-node:last-child {
  margin-bottom: 0;
}

.page-about .timeline-dot {
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 16px;
  height: 16px;
  background: var(--about-orange);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-about .timeline-card {
  background: var(--about-space-light);
  border: 1px solid var(--about-line);
  padding: 1.2rem 1.4rem;
  position: relative;
  transition: border-color 0.28s ease;
}

.page-about .timeline-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 48px;
  height: 3px;
  background: linear-gradient(270deg, var(--about-orange), transparent);
}

.page-about .timeline-card:hover {
  border-color: rgba(0, 255, 136, 0.35);
}

.page-about .timeline-phase {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--about-neon);
  margin-bottom: 0.2rem;
  background: rgba(0, 255, 136, 0.08);
  padding: 0.1rem 0.5rem;
}

.page-about .timeline-card h3 {
  font-family: "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0.45rem 0 0.35rem;
}

.page-about .timeline-card p {
  color: var(--about-text-dim);
  font-size: 0.92rem;
  margin: 0;
}

.page-about .scale-section {
  padding: 4.5rem 0;
  position: relative;
  background: var(--about-space-light);
}

.page-about .scale-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
  max-width: 1280px;
  margin: 2rem auto 0;
  padding: 0 1.5rem;
}

.page-about .scale-card {
  background: var(--about-space);
  border: 1px solid var(--about-line);
  padding: 1.6rem 1.4rem;
  position: relative;
}

.page-about .scale-card--neon {
  border-top: 4px solid var(--about-neon);
}

.page-about .scale-card--orange {
  border-top: 4px solid var(--about-orange);
}

.page-about .scale-num {
  display: block;
  font-family: "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--about-neon);
  line-height: 1;
}

.page-about .scale-card--orange .scale-num {
  color: var(--about-orange);
}

.page-about .scale-label {
  display: block;
  font-size: 0.92rem;
  color: #FFFFFF;
  margin: 0.5rem 0 0.8rem;
}

.page-about .scale-bar {
  height: 6px;
  background: #0B1424;
  margin-bottom: 1rem;
  overflow: hidden;
}

.page-about .scale-bar span {
  display: block;
  height: 6px;
  background: linear-gradient(90deg, transparent, var(--about-neon));
}

.page-about .scale-card--orange .scale-bar span {
  background: linear-gradient(90deg, transparent, var(--about-orange));
}

.page-about .scale-card p {
  color: var(--about-text-dim);
  font-size: 0.86rem;
  margin: 0;
}

.page-about .tech-section {
  padding: 4.5rem 0;
}

.page-about .tech-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.page-about .tech-copy h2,
.page-about .tech-copy p {
  max-width: 42em;
}

.page-about .tech-copy > p {
  color: var(--about-text-dim);
}

.page-about .tech-list {
  list-style: none;
  margin: 1.8rem 0 0;
  padding: 0;
}

.page-about .tech-list li {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 0.8rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .tech-list li:first-child {
  border-top: 1px solid var(--about-line);
}

.page-about .tech-index {
  font-family: monospace;
  font-size: 0.8rem;
  color: var(--about-neon);
  background: rgba(0, 255, 136, 0.06);
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  clip-path: polygon(25% 0, 100% 0, 100% 75%, 75% 100%, 0 100%, 0 25%);
}

.page-about .tech-list h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 0.3rem;
}

.page-about .tech-list p {
  color: var(--about-text-dim);
  font-size: 0.88rem;
  margin: 0;
}

.page-about .tech-panel {
  position: relative;
  background: var(--about-space-light);
  border: 1px solid var(--about-line-neon);
  padding: 2rem 1.6rem;
  display: grid;
  gap: 1.2rem;
  align-content: start;
}

.page-about .tech-panel .vertical-note {
  align-self: flex-start;
  color: var(--about-neon);
}

.page-about .tech-panel-block {
  border-bottom: 1px solid var(--about-line);
  padding-bottom: 0.8rem;
  display: flex;
  flex-direction: column;
}

.page-about .tech-panel-block:last-child {
  border-bottom: none;
}

.page-about .tech-panel-block .mono {
  font-size: 0.78rem;
  color: var(--about-text-dim);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.page-about .tech-panel-block strong {
  font-family: "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--about-orange);
  line-height: 1.4;
}

.page-about .partner-section {
  padding: 4.5rem 0;
  position: relative;
  background: #0B1424;
}

.page-about .partner-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: 1280px;
  margin: 2rem auto 0;
  padding: 0 1.5rem;
}

.page-about .partner-logo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.8rem;
}

.page-about .partner-logo-item {
  background: var(--about-space-light);
  border: 1px solid var(--about-line);
  padding: 1.1rem 0.8rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  transition: border-color 0.25s ease;
}

.page-about .partner-logo-item:hover {
  border-color: rgba(0, 255, 136, 0.4);
}

.page-about .partner-logo-mark {
  width: 2.8rem;
  height: 2.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--about-orange);
  color: #FFFFFF;
  font-weight: 900;
  letter-spacing: 0.08em;
  clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
}

.page-about .partner-logo-name {
  font-size: 0.8rem;
  color: var(--about-text-dim);
  text-align: center;
}

.page-about .partner-note p {
  color: var(--about-text-dim);
  margin-bottom: 1.2rem;
  max-width: 32em;
}

.page-about .partner-image-wrap {
  max-width: 1280px;
  margin: 2rem auto 0;
  padding: 0 1.5rem;
}

.page-about .recog-section {
  padding: 4.5rem 0;
}

.page-about .recog-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.page-about .recog-list {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .recog-item {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 0.9rem;
  background: var(--about-space-light);
  border-left: 4px solid transparent;
  padding: 1.2rem 1.2rem;
}

.page-about .recog-item:nth-child(1) {
  border-left-color: var(--about-neon);
}

.page-about .recog-item:nth-child(2) {
  border-left-color: var(--about-orange);
}

.page-about .recog-item:nth-child(3) {
  border-left-color: var(--about-neon);
}

.page-about .recog-icon {
  font-size: 1rem;
  color: var(--about-neon);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border: 1px solid rgba(0, 255, 136, 0.32);
  clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
}

.page-about .recog-item h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 0.3rem;
}

.page-about .recog-item p {
  color: var(--about-text-dim);
  font-size: 0.88rem;
  margin: 0;
}

.page-about .cta-section {
  padding: 4rem 0;
}

.page-about .cta-block {
  max-width: 1120px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
  background:
    linear-gradient(120deg, rgba(0, 255, 136, 0.1) 0%, rgba(15, 26, 47, 0.95) 55%),
    var(--about-space-light);
  border: 1px solid var(--about-line);
  clip-path: polygon(0 0, 100% 4%, 100% 96%, 0 100%);
}

.page-about .cta-block h2 {
  margin: 0.4rem 0 0.8rem;
}

.page-about .cta-block p {
  color: var(--about-text-dim);
  max-width: 32em;
  margin-bottom: 1.6rem;
}

.page-about .cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.5rem;
  font-family: "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.page-about .btn-accent {
  background: transparent;
  border-color: var(--about-neon);
  color: var(--about-neon);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 50%, calc(100% - 14px) 100%, 0 100%, 14px 50%);
  padding-left: 1.8rem;
  padding-right: 1.8rem;
}

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

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

.page-about .btn-outline {
  clip-path: none;
}

.page-about .section-pad {
  padding: 4.5rem 0;
}

.page-about .mono {
  font-family: monospace;
}

.page-about .container {
  max-width: 1440px;
  margin: 0 auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.page-about .section-meta {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--about-orange);
  margin-bottom: 0.3rem;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
}

.page-about .will-reveal {
  opacity: 0;
  transform: translateY(18px);
}

.page-about .is-revealed {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

@media (min-width: 720px) {
  .page-about .hero-about-inner {
    grid-template-columns: 1.4fr 0.9fr;
    gap: 2.8rem;
    align-items: end;
  }

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

  .page-about .mission-inner {
    grid-template-columns: 1fr 0.9fr;
    gap: 3rem;
    align-items: start;
  }

  .page-about .timeline-rail::before {
    left: 11px;
  }

  .page-about .timeline-node {
    padding-left: 3rem;
  }

  .page-about .timeline-dot {
    width: 24px;
    height: 24px;
  }

  .page-about .timeline-card {
    padding: 1.4rem 1.8rem;
  }

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

  .page-about .tech-inner {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3rem;
    align-items: start;
  }

  .page-about .partner-layout {
    grid-template-columns: 1.05fr 0.8fr;
    gap: 2.5rem;
    align-items: start;
  }

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

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

  .page-about .recog-item:nth-child(3) {
    grid-column: span 2;
  }
}

@media (min-width: 1024px) {
  .page-about .page-hero-about {
    padding: 8.5rem 0 5rem;
  }

  .page-about .hero-about-inner {
    grid-template-columns: 1.35fr 1fr;
    gap: 4rem;
  }

  .page-about .hero-about-copy h1 {
    font-size: clamp(2.8rem, 4.6vw, 4.4rem);
  }

  .page-about .hero-about-panel {
    padding: 2.2rem;
  }

  .page-about .hero-about-stats {
    gap: 1.6rem;
  }

  .page-about .hero-stat-num {
    font-size: 2.4rem;
  }

  .page-about .timeline-wrap {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 3.5rem;
    align-items: start;
  }

  .page-about .timeline-rail {
    margin-top: 0;
    grid-column: 2;
  }

  .page-about .timeline-visual {
    grid-column: 1;
    grid-row: 1;
    position: sticky;
    top: 6rem;
  }

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

  .page-about .tech-panel {
    position: sticky;
    top: 6rem;
  }

  .page-about .partner-note {
    padding-top: 1rem;
  }

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

  .page-about .recog-item:nth-child(3) {
    grid-column: span 1;
  }

  .page-about .cta-block {
    padding: 4rem 3rem;
  }
}