.page-about {
  --about-grid-line: rgba(22, 33, 46, 0.07);
  --about-dark-line: rgba(255, 255, 255, 0.12);
  --about-gold-soft: rgba(232, 185, 49, 0.16);
  --about-neon-soft: rgba(184, 255, 0, 0.14);
  --about-violet-soft: rgba(123, 94, 214, 0.12);
  --about-stat-font: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
}

.about-hero {
  position: relative;
  color: var(--paper);
  background: linear-gradient(135deg, var(--ink-deep), var(--ink));
  padding: clamp(1rem, 3vw, 2rem) 0 2rem;
  overflow: hidden;
}

.about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--about-dark-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-dark-line) 1px, transparent 1px);
  background-size: 42px 42px;
  opacity: 0.5;
  pointer-events: none;
}

.about-hero::after {
  content: "";
  position: absolute;
  right: -8rem;
  top: -10rem;
  width: 28rem;
  height: 28rem;
  background: radial-gradient(circle, var(--violet) 0%, transparent 68%);
  opacity: 0.42;
  pointer-events: none;
}

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

.about-hero .breadcrumb-item {
  color: rgba(245, 240, 230, 0.7);
}

.about-hero .breadcrumb-item[aria-current="page"] {
  color: var(--paper);
}

.about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding-top: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.about-hero__content {
  min-width: 0;
}

.about-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--neon);
  margin-bottom: 1.25rem;
}

.about-hero__eyebrow::before {
  content: "";
  width: 2.25rem;
  height: 2px;
  background: linear-gradient(90deg, var(--neon), transparent);
}

.about-hero__title {
  font-size: clamp(1.9rem, 4.6vw, 3rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  margin: 0 0 1.25rem;
  color: var(--white);
  text-wrap: balance;
}

.about-hero__lead {
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(245, 240, 230, 0.84);
  max-width: 36em;
  margin: 0 0 1.75rem;
}

.about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: center;
}

.about-hero__actions .btn-primary {
  background: var(--violet);
  border-color: var(--violet);
  color: var(--white);
}

.about-hero__actions .btn-primary:hover {
  background: var(--violet-bright);
  border-color: var(--violet-bright);
  box-shadow: 0 10px 20px rgba(123, 94, 214, 0.28);
}

.page-about .about-hero__actions .btn-ghost {
  color: var(--paper);
  border-color: rgba(245, 240, 230, 0.42);
  background: transparent;
}

.page-about .about-hero__actions .btn-ghost:hover {
  border-color: var(--paper);
  background: rgba(245, 240, 230, 0.08);
}

.about-hero__media {
  position: relative;
  margin: 0;
}

.about-hero__pic {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--violet-deep);
  border: 1px solid var(--about-dark-line);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.32);
}

.about-hero__pic img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  opacity: 0.92;
}

.about-hero__live {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.9rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--paper);
  background: rgba(13, 21, 32, 0.76);
  border-radius: 999px;
  backdrop-filter: blur(6px);
  border: 1px solid var(--about-dark-line);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 0 3px var(--about-neon-soft);
  display: inline-block;
  flex: 0 0 auto;
}

.about-hero__media figcaption {
  margin-top: 0.75rem;
  font-size: 0.82rem;
  color: rgba(245, 240, 230, 0.6);
  text-align: center;
  letter-spacing: 0.06em;
}

.about-hero__stats {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin: clamp(2rem, 4vw, 3rem) 0 0;
  background: var(--about-dark-line);
  border: 1px solid var(--about-dark-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.about-hero__stat {
  background: rgba(13, 21, 32, 0.72);
  padding: 1.15rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  transition: background 0.25s ease;
}

.about-hero__stat:hover {
  background: rgba(34, 44, 62, 0.82);
}

.about-hero__stat dt {
  font-family: var(--about-stat-font);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--neon);
  letter-spacing: -0.02em;
}

.about-hero__stat:nth-child(3) dt,
.about-hero__stat:nth-child(4) dt {
  color: var(--gold);
}

.about-hero__stat dd {
  margin: 0;
  font-size: 0.82rem;
  color: rgba(245, 240, 230, 0.66);
  letter-spacing: 0.05em;
}

.about-who {
  background: var(--paper);
  padding: clamp(3rem, 7vw, 6rem) 0;
}

.page-about .about-who .section-head {
  margin-bottom: 2.5rem;
}

.about-who__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem;
}

.about-who__text p {
  font-size: 0.98rem;
  line-height: 1.95;
  color: var(--ink-soft);
  margin: 0 0 1.2em;
}

.about-who__text p:last-child {
  margin-bottom: 0;
}

.about-who__features {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
}

.about-who__feature {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  box-shadow: 0 4px 12px rgba(13, 21, 32, 0.04);
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.about-who__feature:hover {
  border-color: var(--violet);
  box-shadow: 0 10px 24px var(--about-violet-soft);
  transform: translateY(-2px);
}

.about-who__feature-num {
  font-family: var(--about-stat-font);
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--violet);
  background: var(--violet-pale);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.55rem;
  line-height: 1;
  flex: 0 0 auto;
  letter-spacing: 0.04em;
}

.about-who__feature h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 0.3rem;
}

.about-who__feature p {
  font-size: 0.85rem;
  color: var(--ink-soft);
  line-height: 1.65;
  margin: 0;
}

.about-milestones {
  background: var(--grey-blue);
  padding: clamp(3rem, 7vw, 6rem) 0;
  position: relative;
  overflow: hidden;
}

.about-milestones::before {
  content: "";
  position: absolute;
  left: -6rem;
  top: 4rem;
  width: 14rem;
  height: 14rem;
  border-radius: 50%;
  background: var(--about-neon-soft);
  filter: blur(30px);
  pointer-events: none;
}

.page-about .about-milestones .section-head {
  position: relative;
  z-index: 2;
}

.about-milestones__banner {
  position: relative;
  z-index: 2;
  margin: 2.5rem 0 3rem;
}

.about-milestones__banner img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: 0 16px 36px rgba(13, 21, 32, 0.1);
}

.about-milestones__banner figcaption {
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-top: 0.7rem;
  text-align: right;
  letter-spacing: 0.08em;
}

.about-timeline {
  position: relative;
  z-index: 2;
  padding-left: 1.5rem;
  margin-left: 0.25rem;
}

.about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(
    to bottom,
    var(--violet) 0%,
    var(--violet-bright) 45%,
    var(--gold) 72%,
    var(--neon) 100%
  );
  opacity: 0.85;
  border-radius: 2px;
}

.about-timeline__step {
  position: relative;
  margin-bottom: 2rem;
  padding-left: 1.6rem;
}

.about-timeline__step:last-child {
  margin-bottom: 0;
}

.about-timeline__marker {
  position: absolute;
  left: -1.5rem;
  top: 0.8rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--violet);
  border: 3px solid var(--grey-blue);
  box-shadow: 0 0 0 2px var(--violet);
  z-index: 2;
  transition: background 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.about-timeline__marker--gold {
  background: var(--gold);
  box-shadow: 0 0 0 2px var(--gold);
}

.about-timeline__marker--neon {
  background: var(--neon);
  box-shadow: 0 0 0 2px var(--neon);
}

.about-timeline__step:hover .about-timeline__marker {
  transform: scale(1.2);
  background: var(--neon);
  box-shadow: 0 0 0 3px var(--neon);
}

.about-timeline__num {
  display: inline-block;
  font-family: var(--about-stat-font);
  font-weight: 800;
  font-size: 0.72rem;
  color: var(--violet);
  letter-spacing: 0.16em;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.28rem 0.65rem;
  margin-bottom: 0.45rem;
  line-height: 1;
}

.about-timeline__card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.35rem 1.5rem;
  box-shadow: 0 6px 16px rgba(13, 21, 32, 0.05);
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
  position: relative;
  overflow: hidden;
}

.about-timeline__card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--violet);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.about-timeline__card:hover {
  border-color: var(--violet);
  box-shadow: 0 14px 32px rgba(123, 94, 214, 0.14);
  transform: translateY(-3px);
}

.about-timeline__card:hover::after {
  opacity: 1;
}

.about-timeline__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 0.5rem;
  letter-spacing: -0.01em;
}

.about-timeline__desc {
  font-size: 0.88rem;
  color: var(--ink-soft);
  line-height: 1.8;
  margin: 0;
}

.about-timeline__card .btn--sm {
  margin-top: 1rem;
}

.page-about .about-timeline__card .btn-outline {
  color: var(--violet);
  border-color: rgba(123, 94, 214, 0.45);
  background: transparent;
}

.page-about .about-timeline__card .btn-outline:hover {
  border-color: var(--violet);
  background: var(--violet-pale);
}

.about-security {
  background: linear-gradient(145deg, var(--ink-deep), var(--ink));
  color: var(--paper);
  padding: clamp(3rem, 7vw, 6rem) 0;
  position: relative;
  overflow: hidden;
}

.about-security::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--about-dark-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-dark-line) 1px, transparent 1px);
  background-size: 52px 52px;
  opacity: 0.35;
  pointer-events: none;
}

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

.about-security__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
}

.about-security__heading {
  min-width: 0;
}

.about-security__title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  color: var(--white);
  margin: 0.75rem 0 1rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.about-security__lead {
  font-size: 0.95rem;
  line-height: 1.85;
  color: rgba(245, 240, 230, 0.74);
  margin: 0;
  max-width: 30em;
}

.about-security__content {
  min-width: 0;
}

.about-security__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.8rem;
}

.about-security__list li {
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid var(--about-dark-line);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  font-size: 0.88rem;
  line-height: 1.75;
  color: rgba(245, 240, 230, 0.82);
  backdrop-filter: blur(6px);
  transition: border-color 0.25s ease, background 0.25s ease;
}

.about-security__list li:hover {
  border-color: rgba(184, 255, 0, 0.4);
  background: rgba(184, 255, 0, 0.05);
}

.about-security__list strong {
  color: var(--neon);
  font-weight: 700;
  margin-right: 0.3em;
}

.about-security__figure {
  position: relative;
  margin: 0;
}

.about-security__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--about-dark-line);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.3);
}

.about-security__figure figcaption {
  font-size: 0.82rem;
  color: rgba(245, 240, 230, 0.55);
  margin-top: 0.7rem;
  text-align: center;
  letter-spacing: 0.08em;
}

.about-security__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--about-dark-line);
  border: 1px solid var(--about-dark-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.about-security__stat {
  background: rgba(255, 255, 255, 0.06);
  padding: 1.3rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  text-align: center;
  backdrop-filter: blur(6px);
  transition: background 0.25s ease;
}

.about-security__stat:hover {
  background: rgba(255, 255, 255, 0.1);
}

.about-security__stat-value {
  font-family: var(--about-stat-font);
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--neon);
  letter-spacing: -0.02em;
  line-height: 1;
}

.about-security__stat:nth-child(2) .about-security__stat-value {
  color: var(--gold);
}

.about-security__stat:nth-child(3) .about-security__stat-value {
  color: var(--violet-bright);
}

.about-security__stat-label {
  font-size: 0.8rem;
  color: rgba(245, 240, 230, 0.62);
  letter-spacing: 0.04em;
}

.about-team {
  background: var(--paper);
  padding: clamp(3rem, 7vw, 6rem) 0;
}

.about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem;
}

.about-team__intro p {
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--ink-soft);
  margin: 0 0 1.2em;
}

.about-team__principles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.9rem;
}

.about-team__principle {
  position: relative;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.3rem 1.4rem 1.3rem 1.4rem;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
  overflow: hidden;
}

.about-team__principle::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--violet), var(--gold));
  opacity: 0;
  transition: opacity 0.25s ease;
}

.about-team__principle:hover {
  border-color: var(--gold);
  box-shadow: 0 12px 28px rgba(232, 185, 49, 0.12);
  transform: translateY(-2px);
}

.about-team__principle:hover::before {
  opacity: 1;
}

.about-team__principle-num {
  font-family: var(--about-stat-font);
  font-weight: 800;
  font-size: 0.82rem;
  color: var(--gold);
  letter-spacing: 0.12em;
  display: inline-block;
  background: var(--about-gold-soft);
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.6rem;
  line-height: 1;
  margin-bottom: 0.7rem;
}

.about-team__principle h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 0.4rem;
}

.about-team__principle p {
  font-size: 0.86rem;
  color: var(--ink-soft);
  line-height: 1.7;
  margin: 0;
}

.about-team__cta {
  margin-top: 3rem;
  padding: 2rem;
  background: var(--ink);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  align-items: flex-start;
  color: var(--paper);
  border: 1px solid var(--about-dark-line);
}

.about-team__cta p {
  font-size: 1rem;
  line-height: 1.8;
  margin: 0;
  color: rgba(245, 240, 230, 0.82);
}

.about-team__cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.page-about .about-team__cta .btn-outline {
  color: var(--paper);
  border-color: rgba(245, 240, 230, 0.36);
}

.page-about .about-team__cta .btn-outline:hover {
  border-color: var(--neon);
  color: var(--neon);
}

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

.page-about .about-team__cta .btn-primary:hover {
  background: var(--violet-bright);
  border-color: var(--violet-bright);
}

@media (min-width: 640px) {
  .about-hero__stats {
    grid-template-columns: repeat(4, 1fr);
  }

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

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

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

@media (min-width: 900px) {
  .about-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 3rem;
  }

  .about-who__grid {
    grid-template-columns: 7fr 5fr;
    gap: 3.5rem;
    align-items: start;
  }

  .about-security__grid {
    grid-template-columns: repeat(12, 1fr);
    gap: 1.5rem;
    align-items: stretch;
  }

  .about-security__heading {
    grid-column: span 5;
    align-self: center;
  }

  .about-security__content {
    grid-column: span 7;
    align-self: center;
  }

  .about-security__figure {
    grid-column: span 5;
    grid-row: span 2;
  }

  .about-security__stats {
    grid-column: span 7;
  }

  .about-team__grid {
    grid-template-columns: 4fr 8fr;
    gap: 3.5rem;
    align-items: start;
  }

  .about-team__cta {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .about-team__cta p {
    max-width: 32em;
  }
}