.page-about {
  --about-line: rgba(0, 255, 136, 0.08);
  --about-line-orange: rgba(255, 77, 50, 0.06);
  --about-card: rgba(17, 42, 82, 0.72);
  --about-card-border: rgba(0, 255, 136, 0.14);
  background-color: var(--c-bg);
  color: var(--c-white);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: hidden;
  position: relative;
}

.page-about::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    repeating-linear-gradient(135deg, transparent 0, transparent 128px, rgba(0, 255, 136, 0.035) 128px, rgba(0, 255, 136, 0.035) 131px, transparent 131px, transparent 172px),
    repeating-linear-gradient(45deg, transparent 0, transparent 260px, rgba(255, 77, 50, 0.03) 260px, rgba(255, 77, 50, 0.03) 263px, transparent 263px, transparent 320px);
}

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

/* ========== Hero ========== */
.about-hero {
  position: relative;
  padding: 150px 0 64px;
  background:
    radial-gradient(ellipse at 82% 18%, rgba(0, 255, 136, 0.09) 0%, transparent 58%),
    linear-gradient(115deg, transparent 0%, transparent 65%, rgba(255, 77, 50, 0.05) 65%, rgba(255, 77, 50, 0.05) 67%, transparent 67%);
}

.about-hero__layout {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.about-hero__tagline {
  font-family: var(--font-data);
  font-size: 0.8125rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-neon);
  margin: 0 0 12px;
}

.about-hero__title {
  font-family: var(--font-head);
  font-size: clamp(1.75rem, 4vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  max-width: 760px;
}

.about-hero__lead {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--c-silver);
  max-width: 620px;
  margin: 0;
}

.about-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 8px;
}

.about-hero__stat {
  background: var(--about-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 20px 12px;
  text-align: center;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-top: 2px solid var(--c-neon);
}

.about-hero__stat-num {
  display: block;
  font-family: var(--font-data);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--c-neon);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.about-hero__stat-label {
  display: block;
  font-size: 0.75rem;
  color: var(--c-silver);
  margin-top: 4px;
}

/* ========== 共享区块头部 ========== */
.about-kicker {
  font-family: var(--font-data);
  font-size: 0.8125rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-orange);
  margin: 0 0 10px;
  font-weight: 700;
}

.about-section-title {
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 3.4vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 0 0 16px;
  max-width: 680px;
}

.about-section-text {
  margin: 0 0 14px;
  color: var(--c-silver);
  font-size: 0.9688rem;
  line-height: 1.85;
}

.about-section-lead {
  margin: 0;
  color: var(--c-silver);
  font-size: 1rem;
  max-width: 680px;
}

.about-section-head {
  margin-bottom: 48px;
}

/* ========== 品牌使命 ========== */
.about-mission {
  padding: 72px 0;
}

.about-mission__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

.about-mission__link {
  margin-top: 12px;
}

.about-mission__panel {
  background: var(--about-card);
  border: 1px solid var(--about-card-border);
  border-radius: var(--radius);
  overflow: hidden;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}

.about-mission__panel-head {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 14px 18px;
  background: rgba(0, 255, 136, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.about-mission__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--c-neon);
  display: inline-block;
}

.about-mission__dot--amber {
  background: var(--c-amber);
}

.about-mission__dot--orange {
  background: var(--c-orange);
}

.about-mission__panel-title {
  margin-left: 8px;
  font-family: var(--font-data);
  font-size: 0.8125rem;
  color: var(--c-white);
  letter-spacing: 0.06em;
}

.about-mission__panel-body {
  padding: 20px 18px 8px;
}

.about-mission__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
}

.about-mission__row:last-child {
  border-bottom: none;
}

.about-mission__row-label {
  color: var(--c-silver);
  font-size: 0.9rem;
}

.about-mission__row-value {
  font-family: var(--font-data);
  font-weight: 700;
  color: var(--c-neon);
  font-size: 1.1rem;
}

.about-mission__panel-foot {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: rgba(0, 255, 136, 0.04);
}

.about-mission__status {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-neon);
  animation: about-pulse 2s ease-in-out infinite;
}

.about-mission__status-text {
  font-size: 0.75rem;
  color: var(--c-silver);
}

@keyframes about-pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 255, 136, 0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(0, 255, 136, 0); }
}

/* ========== 发展历程 / 时间线 ========== */
.about-history {
  padding: 72px 0;
  background-color: rgba(10, 27, 58, 0.6);
}

.about-history__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: start;
}

.about-history__timeline {
  position: relative;
  padding: 0;
}

.about-history__timeline::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-neon), rgba(0, 255, 136, 0.12));
  border-radius: 2px;
}

.about-timeline__item {
  position: relative;
  padding-left: 48px;
  padding-bottom: 44px;
}

.about-timeline__item:last-child {
  padding-bottom: 0;
}

.about-timeline__item::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-neon);
  box-shadow: 0 0 0 5px rgba(0, 255, 136, 0.15);
  z-index: 1;
}

.about-timeline__year {
  display: block;
  font-family: var(--font-data);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--c-neon);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
  line-height: 1.2;
}

.about-timeline__content {
  background: var(--about-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 20px 22px;
  border-left: 3px solid var(--c-neon);
}

.about-timeline__content h3 {
  font-family: var(--font-head);
  font-size: 1.125rem;
  margin: 0 0 6px;
  color: var(--c-white);
}

.about-timeline__content p {
  font-size: 0.9063rem;
  color: var(--c-silver);
  margin: 0;
  line-height: 1.75;
}

.about-history__visual {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
}

.about-history__img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
}

.about-history__deco {
  position: absolute;
  bottom: 26px;
  left: 20px;
  font-family: var(--font-data);
  font-size: 4.25rem;
  font-weight: 700;
  color: rgba(0, 255, 136, 0.9);
  line-height: 1;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}

.about-history__deco-label {
  position: absolute;
  bottom: 18px;
  left: 20px;
  margin-top: 60px;
  font-size: 0.75rem;
  color: var(--c-white);
  background: rgba(10, 27, 58, 0.75);
  padding: 4px 10px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

/* ========== 技术优势 ========== */
.about-tech {
  padding: 72px 0;
}

.about-tech__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: start;
}

.about-tech__content {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.about-tech__card {
  display: flex;
  gap: 18px;
  background: var(--about-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 22px 20px;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.about-tech__card:hover {
  transform: translateX(6px);
  border-color: var(--about-card-border);
}

.about-tech__num {
  font-family: var(--font-data);
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-orange);
  background: rgba(255, 77, 50, 0.1);
  border-radius: 8px;
  padding: 4px 8px;
  height: fit-content;
  line-height: 1.4;
  flex-shrink: 0;
}

.about-tech__card-body h3 {
  font-family: var(--font-head);
  font-size: 1.0625rem;
  margin: 0 0 6px;
  color: var(--c-white);
}

.about-tech__card-body p {
  font-size: 0.9063rem;
  color: var(--c-silver);
  margin: 0;
  line-height: 1.75;
}

.about-tech__visual {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
}

.about-tech__img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
}

.about-tech__overlay {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(10, 27, 58, 0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--about-card-border);
  border-radius: 12px;
  padding: 12px 16px;
  text-align: center;
}

.about-tech__overlay-num {
  display: block;
  font-family: var(--font-data);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-neon);
  line-height: 1.2;
}

.about-tech__overlay-label {
  display: block;
  font-size: 0.6875rem;
  color: var(--c-silver);
  letter-spacing: 0.08em;
}

/* ========== 市场覆盖 ========== */
.about-coverage {
  padding: 72px 0;
  background-color: rgba(10, 27, 58, 0.6);
}

.about-coverage__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

.about-coverage__chart {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
}

.about-coverage__img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
}

.about-coverage__badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(0, 255, 136, 0.9);
  border-radius: 14px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.about-coverage__badge-num {
  font-family: var(--font-data);
  font-size: 2rem;
  font-weight: 700;
  color: var(--c-bg);
  line-height: 1;
}

.about-coverage__badge-text {
  font-size: 0.75rem;
  color: rgba(10, 27, 58, 0.85);
  line-height: 1.4;
  font-weight: 700;
}

.about-coverage__info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-coverage__item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--about-card);
  border-radius: var(--radius);
  padding: 20px 22px;
  border-left: 3px solid var(--c-orange);
}

.about-coverage__item-value {
  font-family: var(--font-data);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--c-neon);
  line-height: 1.2;
  flex-shrink: 0;
  min-width: 76px;
}

.about-coverage__item-text {
  margin: 0;
  font-size: 0.9063rem;
  color: var(--c-silver);
  line-height: 1.75;
}

.about-coverage__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.about-coverage__tag {
  font-family: var(--font-body);
  font-size: 0.8438rem;
  color: var(--c-white);
  background: rgba(0, 255, 136, 0.12);
  border: 1px solid rgba(0, 255, 136, 0.25);
  border-radius: 999px;
  padding: 6px 14px;
}

.about-coverage__tag--more {
  background: rgba(255, 77, 50, 0.14);
  border-color: rgba(255, 77, 50, 0.3);
  color: var(--c-orange);
  font-family: var(--font-data);
}

/* ========== CTA ========== */
.about-cta {
  padding: 80px 0;
}

.about-cta__inner {
  background: linear-gradient(108deg, var(--c-card) 0%, rgba(17, 42, 82, 0.55) 55%, rgba(0, 255, 136, 0.08) 100%);
  border-radius: calc(var(--radius) + 6px);
  padding: 48px 28px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
  overflow: hidden;
}

.about-cta__inner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-neon), var(--c-orange));
}

.about-cta__title {
  font-family: var(--font-head);
  font-size: clamp(1.375rem, 3vw, 2rem);
  line-height: 1.25;
  margin: 0 0 12px;
  color: var(--c-white);
}

.about-cta__text {
  font-size: 1rem;
  color: var(--c-silver);
  max-width: 480px;
  margin: 0 auto 28px;
}

.about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

.about-cta__btn {
  min-width: 132px;
}

/* ========== 桌面 / 平板 媒体查询 ========== */
@media (min-width: 768px) {
  .about-hero {
    padding: 186px 0 80px;
  }

  .about-hero__layout {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
    gap: 40px;
  }

  .about-hero__copy {
    flex: 1 1 auto;
  }

  .about-hero__stats {
    flex: 0 0 auto;
    grid-template-columns: repeat(3, 1fr);
    margin-top: 0;
    gap: 10px;
  }

  .about-hero__stat {
    min-width: 132px;
    padding: 24px 16px;
  }

  .about-mission,
  .about-history,
  .about-tech,
  .about-coverage {
    padding: 96px 0;
  }

  .about-mission__layout {
    grid-template-columns: 1fr 0.85fr;
    gap: 56px;
  }

  .about-history__layout {
    grid-template-columns: 1fr 0.7fr;
    gap: 48px;
  }

  .about-history__visual {
    position: sticky;
    top: calc(var(--header-h) + 32px);
  }

  .about-tech__layout {
    grid-template-columns: 1fr 0.85fr;
    gap: 48px;
    align-items: center;
  }

  .about-coverage__layout {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
  }

  .about-cta {
    padding: 96px 0;
  }

  .about-cta__inner {
    padding: 60px 48px;
  }
}

@media (min-width: 1024px) {
  .about-timeline__item {
    padding-left: 56px;
  }

  .about-timeline__year {
    font-size: 1.625rem;
  }

  .about-timeline__content {
    padding: 24px 28px;
  }

  .about-tech__content {
    gap: 22px;
  }

  .about-coverage__item-value {
    font-size: 2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .about-mission__status {
    animation: none;
  }

  .about-tech__card {
    transition: none;
  }
}