.page-about {
  --about-card-bg: rgba(20, 44, 67, 0.68);
}

/* ===== 首屏：品牌定位 ===== */
.page-about .about-hero {
  position: relative;
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 3rem;
  overflow: hidden;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, transparent 0%, transparent 40%, rgba(0, 227, 154, 0.05) 40%, rgba(0, 227, 154, 0.05) 42%, transparent 42%, transparent 100%),
    linear-gradient(115deg, transparent 0%, transparent 62%, rgba(255, 122, 47, 0.04) 62%, rgba(255, 122, 47, 0.04) 64%, transparent 64%, transparent 100%),
    radial-gradient(circle at 85% 20%, rgba(0, 227, 154, 0.07), transparent 45%);
  pointer-events: none;
}
.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2rem;
  margin-top: 2rem;
}
.page-about .about-hero__lead {
  max-width: 48rem;
  margin: 1.25rem 0 0;
  color: var(--text-secondary);
  font-size: 1.075rem;
  line-height: 1.75;
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-top: 2rem;
}
.page-about .about-hero__aside {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.page-about .about-hero__aside-item {
  padding: 1.25rem 1.375rem;
  background: rgba(11, 27, 42, 0.72);
}
.page-about .about-hero__aside-label {
  display: block;
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.375rem;
}
.page-about .about-hero__aside-item strong {
  display: block;
  color: var(--text);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.4;
}
.page-about .about-hero__wave {
  height: 4px;
  margin-top: 3rem;
  background: linear-gradient(90deg, transparent, var(--kinetic-green), var(--voltage-orange), transparent);
  opacity: 0.7;
}

/* ===== 发展里程碑 ===== */
.page-about .about-milestones {
  padding: var(--section-pad) 0;
}
.page-about .about-milestones__head h2,
.page-about .about-capabilities__head h2,
.page-about .about-shooting__content h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  line-height: 1.2;
  margin: 0.625rem 0 1rem;
}
.page-about .about-milestones__intro,
.page-about .about-capabilities__intro,
.page-about .about-shooting__intro {
  color: var(--text-secondary);
  line-height: 1.7;
}
.page-about .about-milestones__body {
  display: grid;
  gap: 2.5rem;
  margin-top: 3rem;
}
.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: 1.5rem;
  border-left: 2px solid rgba(0, 227, 154, 0.2);
  padding-left: 2rem;
}
.page-about .about-timeline__item {
  position: relative;
  padding: 1.5rem;
  background: var(--about-card-bg);
  border: 1px solid var(--line);
}
.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-2rem - 6px);
  top: 1.625rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--kinetic-green);
  box-shadow: 0 0 0 4px rgba(0, 227, 154, 0.14);
}
.page-about .about-timeline__marker {
  display: inline-block;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--voltage-orange);
  border: 1px solid var(--line-orange);
  padding: 0.25rem 0.625rem;
  margin-bottom: 0.75rem;
}
.page-about .about-timeline__card h3 {
  font-size: 1.25rem;
  margin: 0 0 0.5rem;
}
.page-about .about-timeline__card p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.7;
}
.page-about .about-milestones__figure {
  margin: 0;
  border: 1px solid var(--line);
}
.page-about .about-milestones__figure img {
  width: 100%;
  height: auto;
  display: block;
}

/* ===== 服务能力 ===== */
.page-about .about-capabilities {
  position: relative;
  padding: var(--section-pad) 0;
  overflow: hidden;
}
.page-about .about-capabilities__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-about .about-capabilities__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.22;
}
.page-about .about-capabilities__bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--bg) 0%, rgba(11, 27, 42, 0.65) 50%, var(--bg) 100%);
}
.page-about .about-capabilities > .container {
  position: relative;
  z-index: 1;
}
.page-about .about-capabilities__head {
  max-width: 52rem;
}
.page-about .about-capabilities__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: 2.5rem 0;
}
.page-about .about-capabilities__stats .stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  background: rgba(11, 27, 42, 0.78);
  text-align: center;
}
.page-about .about-capabilities__stats .stat__value {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.875rem, 4vw, 2.75rem);
  line-height: 1.1;
  color: var(--kinetic-green);
}
.page-about .about-capabilities__stats .stat__label {
  margin-top: 0.5rem;
  font-family: var(--font-data);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}
.page-about .about-capabilities__grid {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 2rem;
}
.page-about .about-capabilities__grid .card {
  display: block;
  padding: 1.5rem;
  background: var(--about-card-bg);
  border: 1px solid var(--line);
  text-decoration: none;
  transition: transform var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
.page-about .about-capabilities__grid .card:hover {
  transform: translateY(-4px);
  border-color: var(--line-green);
  box-shadow: var(--shadow-deep);
}
.page-about .about-capabilities__grid .card__title {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}
.page-about .about-capabilities__grid .card__text {
  display: block;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 0.75rem;
}
.page-about .about-capabilities__grid .card__meta {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 0.8125rem;
  color: var(--kinetic-green);
}
.page-about .about-capabilities__trust {
  border-top: 1px solid var(--line);
  padding-top: 1.5rem;
}
.page-about .about-capabilities__trust p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ===== 射门统计对照 ===== */
.page-about .about-shooting {
  padding: var(--section-pad) 0;
  background: linear-gradient(180deg, transparent 0%, rgba(20, 44, 67, 0.35) 100%);
}
.page-about .about-shooting__grid {
  display: grid;
  gap: 2.5rem;
}
.page-about .about-shooting__points {
  list-style: none;
  margin: 1.5rem 0 2rem;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}
.page-about .about-shooting__points li {
  position: relative;
  padding-left: 1.375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.page-about .about-shooting__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5625rem;
  width: 6px;
  height: 6px;
  background: var(--kinetic-green);
  transform: rotate(45deg);
}
.page-about .about-shooting__visual {
  display: grid;
  gap: 1.5rem;
}
.page-about .about-shooting__chart {
  display: grid;
  gap: 1.5rem;
  padding: 1.5rem;
  background: rgba(11, 27, 42, 0.72);
  border: 1px solid var(--line);
}
.page-about .about-shooting__chart-team {
  display: grid;
  gap: 0.75rem;
}
.page-about .about-shooting__chart-name {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.0625rem;
  margin-bottom: 0.25rem;
}
.page-about .about-shooting__chart-name::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}
.page-about .about-shooting__chart-row {
  display: grid;
  grid-template-columns: 3rem 1fr 2.25rem;
  align-items: center;
  gap: 0.625rem;
}
.page-about .about-shooting__chart-label {
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}
.page-about .about-shooting__bar {
  height: 0.625rem;
  background: rgba(255, 255, 255, 0.07);
  overflow: hidden;
}
.page-about .about-shooting__bar-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--kinetic-green), rgba(0, 227, 154, 0.4));
}
.page-about .about-shooting__bar-fill--ghost {
  background: linear-gradient(90deg, var(--voltage-orange), rgba(255, 122, 47, 0.35));
}
.page-about .about-shooting__chart-num {
  font-family: var(--font-data);
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--text);
  text-align: right;
}
.page-about .about-shooting__figure {
  margin: 0;
  border: 1px solid var(--line);
}
.page-about .about-shooting__figure img {
  width: 100%;
  height: auto;
  display: block;
}

/* ===== 信任与CTA ===== */
.page-about .about-cta {
  padding: var(--section-pad) 0;
}
.page-about .about-cta__panel {
  background: linear-gradient(135deg, rgba(0, 227, 154, 0.06), rgba(255, 122, 47, 0.04));
  border: 1px solid var(--line-green);
  padding: clamp(2rem, 5vw, 3.5rem);
}
.page-about .about-cta__text {
  max-width: 46rem;
  margin: 1rem 0 2rem;
  color: var(--text-secondary);
  font-size: 1.0625rem;
  line-height: 1.7;
}
.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
}

/* ===== 桌面端布局 ===== */
@media (min-width: 768px) {
  .page-about .about-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 3rem;
    align-items: stretch;
  }
  .page-about .about-milestones__body {
    grid-template-columns: 7fr 5fr;
    gap: 3rem;
    align-items: start;
  }
  .page-about .about-milestones__figure {
    position: sticky;
    top: 8rem;
  }
  .page-about .about-capabilities__stats {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-about .about-capabilities__grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .about-shooting__grid {
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-about .about-capabilities__head {
    max-width: 60%;
  }
}