/* ===== 品牌故事 · 仅限 .page-about ===== */
.page-about {
  background: linear-gradient(180deg, var(--deep-navy) 0%, var(--deep-navy) 28%, var(--jewel-burgundy) 55%, var(--deep-navy) 82%, var(--deep-navy) 100%);
  color: var(--off-white);
}

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

.page-about p:not(.section-label) {
  line-height: 1.85;
  color: #C9D4E0;
}

.page-about h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.9rem, 5vw, 3.2rem);
  line-height: 1.12;
  color: var(--off-white);
  margin: 1rem 0 1.25rem;
}

.page-about h3 {
  font-size: 1.25rem;
  line-height: 1.4;
  color: var(--off-white);
  margin-bottom: 0.5rem;
}

/* Hero 框景 */
.page-about .about-hero {
  padding: 3rem 0 4.5rem;
}

.page-about .about-hero-window {
  position: relative;
  margin-top: 2rem;
  padding: 2rem 1.25rem 4rem;
  border: 1px solid rgba(245, 247, 250, 0.22);
  border-radius: var(--radius);
  background: linear-gradient(140deg, rgba(255, 107, 53, 0.08), transparent 42%, rgba(57, 255, 20, 0.05));
  overflow: hidden;
}

.page-about .about-hero-window::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--electric-orange) 0 16%, var(--neon-green) 16% 100%);
}

.page-about .about-hero-window::after {
  content: "";
  position: absolute;
  right: 1rem;
  top: 2.25rem;
  bottom: 2.25rem;
  width: 3px;
  background: repeating-linear-gradient(to bottom, rgba(57, 255, 20, 0.55) 0 6px, transparent 6px 12px);
  opacity: 0.65;
}

.page-about .about-hero h1 {
  position: relative;
  z-index: 1;
  font-family: var(--font-heading);
  font-size: clamp(2.3rem, 6vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: 0.01em;
  margin: 1.1rem 0 1.4rem;
}

.page-about .about-hero-lead {
  position: relative;
  z-index: 1;
  max-width: 42rem;
  font-size: 1.0625rem;
  margin-bottom: 2rem;
}

.page-about .about-hero-stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.85rem;
}

.page-about .about-hero-stat {
  padding: 0.95rem 1rem 0.9rem;
  background: rgba(11, 29, 58, 0.74);
  border: 1px solid rgba(245, 247, 250, 0.14);
  border-left: 3px solid var(--electric-orange);
  border-radius: 4px;
}

.page-about .about-hero-stat-num {
  font-family: var(--font-heading);
  font-size: 1.85rem;
  line-height: 1;
  color: var(--neon-green);
}

.page-about .about-hero-stat-unit {
  font-size: 0.9rem;
  color: var(--neon-green);
  margin-left: 0.15rem;
}

.page-about .about-hero-stat-label {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--muted-steel);
}

.page-about .about-hero-year {
  position: absolute;
  right: -2rem;
  bottom: -0.9rem;
  font-family: var(--font-heading);
  font-size: clamp(4.5rem, 14vw, 11rem);
  line-height: 0.8;
  white-space: nowrap;
  color: transparent;
  -webkit-text-stroke: 1px rgba(245, 247, 250, 0.16);
  opacity: 0.5;
  pointer-events: none;
  z-index: 0;
}

/* 滚动的开端 */
.page-about .about-intro {
  padding: 4rem 0;
}

.page-about .about-intro-inner {
  display: grid;
  gap: 2.5rem;
}

.page-about .about-intro-text p {
  margin: 1rem 0;
}

.page-about .about-intro-quote {
  border-left: 4px solid var(--neon-green);
  padding: 1.25rem 1.4rem;
  background: rgba(57, 255, 20, 0.06);
  align-self: start;
}

.page-about .about-intro-quote-text {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--off-white);
}

.page-about .about-intro-quote-src {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--muted-steel);
}

/* 时间轴 */
.page-about .about-timeline {
  padding: 4rem 0 4.5rem;
}

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

.page-about .about-timeline-sub {
  margin-top: 1rem;
}

.page-about .about-timeline-banner {
  display: block;
  width: 100%;
  max-width: 600px;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid rgba(245, 247, 250, 0.18);
  margin: 0 0 2.5rem;
}

.page-about .about-timeline-list {
  position: relative;
}

.page-about .about-timeline-list::before {
  content: "";
  position: absolute;
  top: 0.5rem;
  bottom: 0.5rem;
  left: 1.35rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--electric-orange), var(--jewel-teal), var(--neon-green));
  opacity: 0.55;
}

.page-about .about-timeline-item {
  position: relative;
  margin-bottom: 1rem;
  background: rgba(14, 23, 38, 0.62);
  border: 1px solid rgba(245, 247, 250, 0.14);
  border-radius: var(--radius);
  transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}

.page-about .about-timeline-item[open] {
  background: rgba(245, 247, 250, 0.07);
  border-color: rgba(57, 255, 20, 0.3);
}

.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: 1.38rem;
  top: 1.75rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--deep-navy);
  border: 2px solid var(--neon-green);
  transform: translateX(-50%);
  z-index: 1;
}

.page-about .about-timeline-item:hover {
  transform: translateX(6px);
  border-color: rgba(57, 255, 20, 0.32);
}

.page-about .about-timeline-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 1.1rem 1.25rem 1.1rem 3.4rem;
}

.page-about .about-timeline-item summary::-webkit-details-marker {
  display: none;
}

.page-about .about-timeline-item summary::after {
  content: "+";
  margin-left: auto;
  align-self: center;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  line-height: 1;
  color: var(--electric-orange);
}

.page-about .about-timeline-item[open] summary::after {
  content: "–";
}

.page-about .about-timeline-year {
  font-family: var(--font-heading);
  font-size: 1.55rem;
  line-height: 1;
  color: var(--neon-green);
  min-width: 3.6rem;
}

.page-about .about-timeline-title {
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--off-white);
}

.page-about .about-timeline-desc {
  padding: 0.25rem 1.5rem 1.35rem 3.4rem;
}

/* 覆盖全景 */
.page-about .about-coverage {
  padding: 4.5rem 0;
}

.page-about .about-coverage-grid {
  display: grid;
  gap: 2.5rem;
}

.page-about .about-coverage-list {
  list-style: none;
  margin: 1.5rem 0 2rem;
  padding: 0;
}

.page-about .about-coverage-list li {
  position: relative;
  padding: 0.7rem 0 0.7rem 1.7rem;
  border-bottom: 1px solid rgba(245, 247, 250, 0.1);
  color: #C9D4E0;
  font-size: 0.95rem;
}

.page-about .about-coverage-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.15rem;
  width: 8px;
  height: 8px;
  background: var(--electric-orange);
  transform: rotate(45deg);
}

.page-about .about-coverage-chart img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 5;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid rgba(245, 247, 250, 0.16);
  background: rgba(14, 23, 38, 0.5);
}

/* 团队与坚守 */
.page-about .about-team {
  padding: 4.5rem 0;
}

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

.page-about .about-team-rules {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin: 2rem 0;
}

.page-about .about-team-rule {
  padding: 1rem 0.75rem;
  text-align: center;
  background: rgba(57, 255, 20, 0.05);
  border: 1px solid rgba(57, 255, 20, 0.22);
  border-radius: var(--radius);
}

.page-about .about-team-rule-num {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.8rem;
  line-height: 1;
  color: var(--neon-green);
}

.page-about .about-team-rule-text {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--muted-steel);
}

.page-about .about-team-grid {
  display: grid;
  gap: 1.25rem;
}

.page-about .about-team-card {
  display: grid;
  gap: 1.25rem;
  padding: 1.5rem;
  background: rgba(14, 23, 38, 0.55);
  border: 1px solid rgba(245, 247, 250, 0.12);
  border-radius: var(--radius);
}

.page-about .about-team-card img {
  display: block;
  width: min(300px, 100%);
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid rgba(57, 255, 20, 0.35);
  margin: 0 auto;
}

/* 口碑与责任 */
.page-about .about-honor {
  padding: 4.5rem 0 5.5rem;
}

.page-about .about-honor-head {
  margin-bottom: 2rem;
}

.page-about .about-honor-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 0 0 2rem;
}

.page-about .about-honor-item {
  padding: 1.35rem 1rem 1.25rem;
  text-align: center;
  background: rgba(255, 107, 53, 0.07);
  border: 1px solid rgba(255, 107, 53, 0.24);
  border-top: 3px solid var(--electric-orange);
  border-radius: 4px;
}

.page-about .about-honor-num {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.5rem;
  line-height: 1;
  color: var(--off-white);
}

.page-about .about-honor-label {
  display: block;
  margin-top: 0.55rem;
  font-size: 0.82rem;
  color: var(--muted-steel);
}

.page-about .about-honor-text {
  max-width: 48rem;
  margin-bottom: 2rem;
}

.page-about .about-honor-text p {
  margin: 1rem 0;
}

.page-about .about-honor-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* 桌面端 */
@media (min-width: 960px) {
  .page-about section {
    padding: 5.5rem 0;
  }

  .page-about .about-hero {
    padding: 4rem 0 6rem;
  }

  .page-about .about-hero-window {
    padding: 3rem 3.5rem 5rem;
  }

  .page-about .about-hero-stats {
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
  }

  .page-about .about-intro-inner {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3rem;
  }

  .page-about .about-timeline-head {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: end;
    gap: 2rem;
  }

  .page-about .about-timeline-head .section-label {
    margin-bottom: 0;
  }

  .page-about .about-timeline-head h2 {
    margin: 0;
  }

  .page-about .about-timeline-sub {
    grid-column: 1 / -1;
    max-width: 36rem;
    margin-top: 0;
  }

  .page-about .about-timeline-banner {
    margin-bottom: 3rem;
  }

  .page-about .about-timeline-list {
    max-width: 860px;
  }

  .page-about .about-timeline-list::before {
    left: 2.4rem;
  }

  .page-about .about-timeline-item::before {
    left: 2.4rem;
    top: 2.1rem;
  }

  .page-about .about-timeline-item summary {
    padding: 1.4rem 1.5rem 1.4rem 5.4rem;
  }

  .page-about .about-timeline-year {
    font-size: 2.2rem;
    min-width: 4.6rem;
  }

  .page-about .about-timeline-desc {
    padding: 0.25rem 1.5rem 1.5rem 5.4rem;
  }

  .page-about .about-coverage-grid {
    grid-template-columns: 0.85fr 1.4fr;
    align-items: center;
    gap: 3rem;
  }

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

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

  .page-about .about-honor-item {
    padding: 1.8rem 1.25rem;
  }
}