.page-about {
  --about-accent: #39FF14;
  --about-cyan: #00FFFF;
  --about-purple: #6A0DAD;
  --about-warn: #FF6B35;
  color-scheme: dark;
  background: #0A0A0A;
  color: #FFFFFF;
  font-family: var(--kx-font-body);
  overflow-x: hidden;
}

/* ---------------------------------- */
/* 首屏 Hero                          */
/* ---------------------------------- */
.about-hero {
  position: relative;
  padding: 7rem 0 3.5rem;
  background:
    linear-gradient(120deg, transparent 55%, rgba(106, 13, 173, 0.28) 140%),
    #0A0A0A;
  border-bottom: 3px solid #FFFFFF;
}

.about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.04) 0 1px, transparent 1px 48px);
  pointer-events: none;
}

.about-hero .kx-container {
  position: relative;
  z-index: 1;
}

.about-hero__layout {
  display: grid;
  gap: 2rem;
  margin-top: 2rem;
}

.about-hero__side {
  border-left: 3px solid var(--about-accent);
  padding-left: 1rem;
  align-self: start;
}

.about-hero__period {
  font-family: var(--kx-font-display);
  font-size: clamp(2rem, 8vw, 3.5rem);
  line-height: 0.95;
  margin: 1rem 0 0.5rem;
  color: var(--about-cyan);
  letter-spacing: 0.02em;
}

.about-hero__rule {
  display: block;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--about-accent), transparent);
  margin-top: 1rem;
}

.about-hero__main {
  max-width: 820px;
}

.about-hero__preface {
  display: inline-block;
  margin-bottom: 0.75rem;
  padding: 0.35rem 0.75rem;
  background: rgba(57, 255, 20, 0.12);
  border: 1px solid rgba(57, 255, 20, 0.35);
  color: var(--about-accent);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.about-hero__title-main {
  display: block;
  font-size: 1.6em;
}

.about-hero__title-sub {
  display: block;
  font-size: 0.58em;
  line-height: 1.1;
  color: #FFFFFF;
  border-top: 2px solid rgba(255, 255, 255, 0.6);
  margin-top: 0.3em;
  padding-top: 0.25em;
  letter-spacing: 0.05em;
  max-width: 9em;
}

.about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.75rem;
}

/* ---------------------------------- */
/* 时间线                             */
/* ---------------------------------- */
.about-timeline {
  position: relative;
  overflow: hidden;
  padding: 3.5rem 0 4rem;
  border-bottom: 3px solid #FFFFFF;
  background:
    linear-gradient(180deg, #0A0A0A 0%, rgba(106, 13, 173, 0.2) 50%, #0A0A0A 100%);
}

.about-timeline__visual {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.32;
}

.about-timeline__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.about-timeline::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

.about-timeline .kx-container {
  position: relative;
  z-index: 2;
}

.about-timeline__header {
  display: grid;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.about-timeline__heading h2 {
  margin-top: 0.35rem;
}

.about-timeline__intro {
  color: var(--kx-text-dim);
  max-width: 60ch;
  line-height: 1.7;
  border-left: 3px solid var(--about-cyan);
  padding-left: 1rem;
}

.about-timeline__axis {
  margin: 2rem 0 0;
  padding: 0.75rem;
  background: rgba(10, 10, 10, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: var(--kx-shadow-hard);
}

.about-timeline__axis svg {
  display: block;
  width: 100%;
  height: auto;
}

.about-timeline__list {
  margin-top: 2.5rem;
  display: grid;
  gap: 2rem;
}

.about-milestone {
  display: grid;
  gap: 0.85rem;
  position: relative;
  padding-left: 1.25rem;
  border-left: 3px solid var(--about-accent);
}

.about-milestone__year {
  font-family: var(--kx-font-display);
  font-size: clamp(2.75rem, 12vw, 4.5rem);
  line-height: 0.9;
  color: var(--about-accent);
  text-shadow: 4px 4px 0 rgba(0, 255, 255, 0.18);
  letter-spacing: 0.01em;
}

.about-milestone__card {
  background: var(--kx-surface);
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 1.5rem;
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.7);
  transition:
    border-color 200ms ease,
    box-shadow 200ms ease,
    transform 200ms ease;
}

.about-milestone:hover .about-milestone__card {
  border-color: var(--about-accent);
  box-shadow:
    0 0 24px rgba(57, 255, 20, 0.16),
    8px 8px 0 rgba(0, 0, 0, 0.5);
  transform: translateX(-2px);
}

.about-milestone__tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--about-cyan);
  border-bottom: 2px solid rgba(0, 255, 255, 0.4);
  padding-bottom: 0.3rem;
  margin-bottom: 0.6rem;
}

.about-milestone__card h3 {
  margin-bottom: 0.6rem;
}

.about-milestone__card p {
  color: var(--kx-text-dim);
  line-height: 1.7;
  font-size: 0.95rem;
  margin-bottom: 0.65rem;
}

.about-milestone__points {
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.4rem;
}

.about-milestone__points li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.9rem;
  color: #FFFFFF;
  line-height: 1.5;
}

.about-milestone__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 7px;
  height: 7px;
  background: var(--about-accent);
  transform: rotate(45deg);
}

/* ---------------------------------- */
/* 核心理念                           */
/* ---------------------------------- */
.about-principles {
  padding: 3.5rem 0 4rem;
  border-bottom: 3px solid #FFFFFF;
  background:
    linear-gradient(180deg, #0A0A0A 0%, #111111 100%);
}

.about-principles__header {
  max-width: 760px;
  margin-bottom: 2.5rem;
}

.about-principles__header h2 {
  margin: 0.35rem 0 0.8rem;
}

.about-principles__lede {
  color: var(--kx-text-dim);
  font-size: 1.05rem;
  line-height: 1.7;
  border-left: 3px solid var(--about-purple);
  padding-left: 1rem;
}

.about-principles__grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.about-principles__item {
  position: relative;
  border: 3px solid #FFFFFF;
  background:
    linear-gradient(135deg, #151515 0%, #0D0D0D 100%);
  padding: 1.75rem 1.5rem;
  overflow: hidden;
  transition:
    border-color 200ms ease,
    box-shadow 200ms ease;
}

.about-principles__item:hover {
  border-color: var(--about-accent);
  box-shadow: 0 0 26px rgba(57, 255, 20, 0.14);
}

.about-principles__item::after {
  content: "";
  position: absolute;
  right: -45px;
  top: -45px;
  width: 110px;
  height: 110px;
  background: rgba(106, 13, 173, 0.35);
  transform: rotate(12deg);
  pointer-events: none;
}

.about-principles__item--fast {
  box-shadow: inset 6px 0 0 var(--about-accent);
}

.about-principles__item--accurate {
  box-shadow: inset 6px 0 0 var(--about-cyan);
}

.about-principles__item--fresh {
  box-shadow: inset 6px 0 0 var(--about-purple);
}

.about-principles__no {
  display: block;
  font-family: var(--kx-font-display);
  font-size: 3.25rem;
  line-height: 1;
  color: rgba(255, 255, 255, 0.16);
  margin-bottom: 1rem;
}

.about-principles__item h3 {
  font-family: var(--kx-font-display);
  font-size: 2.75rem;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: 0.75rem;
}

.about-principles__metric {
  font-size: 1rem;
  color: var(--about-cyan);
  padding-top: 0.9rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.about-principles__metric b {
  font-family: var(--kx-font-display);
  font-size: 1.6em;
  color: #FFFFFF;
  letter-spacing: 0.03em;
}

.about-principles__item p:last-child {
  color: var(--kx-text-dim);
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: 0;
}

/* ---------------------------------- */
/* 数据规模                           */
/* ---------------------------------- */
.about-scale {
  position: relative;
  padding: 3.5rem 0 4rem;
  border-bottom: 3px solid #FFFFFF;
  background:
    radial-gradient(circle at 15% 10%, rgba(0, 255, 255, 0.08), transparent 32%),
    #0A0A0A;
}

.about-scale__header {
  margin-bottom: 2rem;
}

.about-scale__header h2 {
  margin: 0.35rem 0 0.6rem;
}

.about-scale__intro {
  color: var(--kx-text-dim);
  max-width: 65ch;
  line-height: 1.7;
}

.about-scale__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 3px solid #FFFFFF;
  border-left: 3px solid #FFFFFF;
  margin-top: 2rem;
}

.about-scale__cell {
  position: relative;
  background: #101010;
  border-right: 3px solid #FFFFFF;
  border-bottom: 3px solid #FFFFFF;
  padding: 1.5rem 1.25rem;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition:
    background 200ms ease,
    box-shadow 200ms ease;
}

.about-scale__cell:hover {
  background: #161616;
  box-shadow: inset 0 0 22px rgba(57, 255, 20, 0.08);
}

.about-scale__cell--accent {
  background:
    linear-gradient(135deg, rgba(57, 255, 20, 0.12), transparent 60%),
    #101010;
}

.about-scale__num {
  font-family: var(--kx-font-display);
  font-size: clamp(2.5rem, 9vw, 5rem);
  line-height: 0.9;
  display: block;
  color: #FFFFFF;
  letter-spacing: 0.01em;
  text-shadow: 3px 3px 0 rgba(57, 255, 20, 0.25);
  margin-bottom: 0.5rem;
}

.about-scale__cell--accent .about-scale__num {
  color: var(--about-accent);
  text-shadow: 3px 3px 0 rgba(0, 255, 255, 0.22);
}

.about-scale__tag {
  display: block;
  color: var(--about-cyan);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.82rem;
  margin-bottom: 0.35rem;
}

.about-scale__cell p {
  font-size: 0.88rem;
  color: var(--kx-text-dim);
  line-height: 1.5;
  margin-bottom: 0;
}

.about-scale__honor {
  display: grid;
  gap: 2rem;
  margin-top: 3rem;
  align-items: center;
}

.about-scale__trophy {
  border: 3px solid #FFFFFF;
  background: linear-gradient(135deg, #151515, #0A0A0A);
  padding: 1rem;
  box-shadow: 10px 10px 0 rgba(57, 255, 20, 0.12);
  transform: rotate(-1deg);
}

.about-scale__trophy img {
  width: 100%;
  height: auto;
  max-width: 400px;
  display: block;
  margin: 0 auto;
}

.about-scale__note {
  background: rgba(255, 255, 255, 0.03);
  border-left: 4px solid var(--about-purple);
  padding: 1.5rem;
}

.about-scale__note-label {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--about-purple);
  display: inline-block;
  border-bottom: 2px solid var(--about-purple);
  padding-bottom: 0.3rem;
  margin-bottom: 0.7rem;
}

.about-scale__note h3 {
  font-family: var(--kx-font-display);
  font-size: 1.9rem;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  letter-spacing: 0.02em;
}

.about-scale__note p {
  color: var(--kx-text-dim);
  line-height: 1.75;
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}

/* ---------------------------------- */
/* 团队与责任                         */
/* ---------------------------------- */
.about-team {
  padding: 3.5rem 0 4rem;
  border-bottom: 3px solid #FFFFFF;
  background:
    linear-gradient(150deg, transparent 40%, rgba(0, 255, 255, 0.07) 130%),
    #0A0A0A;
}

.about-team__grid {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.about-team__media {
  border: 3px solid #FFFFFF;
  background: #111111;
  padding: 0.75rem;
  box-shadow: 12px 12px 0 rgba(0, 255, 255, 0.14);
  transform: rotate(1deg);
}

.about-team__media img {
  display: block;
  width: 100%;
  height: auto;
}

.about-team__content h2 {
  margin: 0.35rem 0 1rem;
}

.about-team__content > p {
  color: var(--kx-text-dim);
  line-height: 1.75;
  font-size: 0.98rem;
  max-width: 60ch;
}

.about-team__list {
  list-style: none;
  margin: 1.5rem 0;
  padding: 0;
}

.about-team__list li {
  position: relative;
  padding: 0.8rem 0 0.8rem 1.4rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  color: #FFFFFF;
  font-size: 0.95rem;
  line-height: 1.6;
}

.about-team__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.25rem;
  width: 8px;
  height: 8px;
  background: var(--about-accent);
  box-shadow: 0 0 8px rgba(57, 255, 20, 0.5);
}

.about-team__bars {
  margin-top: 1.75rem;
  padding: 1.25rem;
  background: var(--kx-surface);
  border-left: 5px solid var(--about-accent);
  display: grid;
  gap: 1rem;
}

.about-team__bar-row {
  display: grid;
  grid-template-columns: 96px 1fr 48px;
  gap: 0.75rem;
  align-items: center;
  font-size: 0.85rem;
  color: var(--kx-text-dim);
}

.about-team__bar-row b {
  color: #FFFFFF;
  font-family: var(--kx-font-display);
  font-size: 1.15rem;
  letter-spacing: 0.03em;
}

.about-team__bar-track {
  height: 13px;
  background: #2A2A2A;
  overflow: hidden;
}

.about-team__bar-track span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--about-accent), var(--about-cyan));
}

.about-team__bar-track--cyan span {
  background: linear-gradient(90deg, var(--about-cyan), var(--about-purple));
}

/* ---------------------------------- */
/* 结尾 CTA                           */
/* ---------------------------------- */
.about-outro {
  padding: 3rem 0;
  background:
    linear-gradient(115deg, #6A0DAD 0%, rgba(26, 26, 26, 0.95) 55%, #0A0A0A 100%);
  border-bottom: 3px solid #FFFFFF;
}

.about-outro__inner {
  max-width: 760px;
}

.about-outro__inner h2 {
  font-family: var(--kx-font-display);
  font-size: clamp(1.9rem, 5vw, 3rem);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: 0.6rem;
}

.about-outro__inner p {
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.75;
  font-size: 0.98rem;
  max-width: 62ch;
  margin-bottom: 1.25rem;
}

.about-outro__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ---------------------------------- */
/* 桌面端适配                         */
/* ---------------------------------- */
@media (min-width: 768px) {
  .about-hero__layout {
    grid-template-columns: minmax(180px, 24%) 1fr;
    gap: 3rem;
    margin-top: 3rem;
  }

  .about-hero__side {
    position: sticky;
    top: 88px;
  }

  .about-hero__title-main {
    font-size: 1.75em;
  }

  .about-hero__title-sub {
    max-width: 12em;
  }

  .about-timeline__header {
    grid-template-columns: 1fr 380px;
    align-items: end;
    gap: 3rem;
  }

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

  .about-scale__honor {
    grid-template-columns: 0.85fr 1.4fr;
    gap: 3rem;
  }

  .about-team__grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 3rem;
  }
}

@media (min-width: 960px) {
  .about-hero {
    padding-bottom: 5rem;
  }

  .about-hero__main {
    padding-left: 2rem;
    border-left: 3px solid rgba(255, 255, 255, 0.2);
  }

  .about-timeline {
    padding-top: 4rem;
  }

  .about-timeline__list {
    margin-top: 3rem;
    position: relative;
  }

  .about-timeline__list::before {
    content: "";
    position: absolute;
    left: 262px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(180deg, var(--about-accent), var(--about-cyan) 70%, rgba(255, 255, 255, 0.12));
  }

  .about-milestone {
    grid-template-columns: 240px 1fr;
    column-gap: 2.5rem;
    padding-left: 0;
    border-left: 0;
    align-items: start;
  }

  .about-milestone__year {
    text-align: right;
    padding-right: 2.5rem;
    position: relative;
  }

  .about-milestone__year::after {
    content: "";
    position: absolute;
    right: -9px;
    top: 0.55em;
    width: 14px;
    height: 14px;
    background: #0A0A0A;
    border: 3px solid var(--about-accent);
    border-radius: 50%;
    box-shadow: 0 0 12px rgba(57, 255, 20, 0.45);
    z-index: 1;
  }

  .about-milestone--today .about-milestone__year::after {
    background: var(--about-accent);
  }

  .about-milestone__card {
    max-width: 820px;
  }

  .about-principles__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }

  .about-principles__item {
    padding: 2rem 1.75rem;
  }
}