/* ==========================================================
   Page: about 品牌概况
   作用域限定 .page-about
   ========================================================== */
.page-about {
  background: var(--color-bg);
  color: var(--color-dark);
  overflow-x: hidden;
}

/* ---------- 首屏 Hero ---------- */
.page-about .about-hero {
  position: relative;
  background-color: var(--color-primary);
  background-image:
    linear-gradient(rgba(168, 192, 216, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(168, 192, 216, 0.08) 1px, transparent 1px),
    radial-gradient(circle at 82% 18%, rgba(182, 255, 60, 0.16), transparent 32%),
    radial-gradient(circle at 8% 88%, rgba(255, 107, 53, 0.22), transparent 36%);
  background-size: 48px 48px, 48px 48px, 100% 100%, 100% 100%;
  color: var(--color-bg);
  padding: 112px 0 88px;
  position: relative;
  z-index: 1;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 220px;
  height: 220px;
  background: var(--color-accent);
  border-radius: 40px;
  transform: rotate(18deg) translate(70px, -40px);
  opacity: 0.22;
  z-index: 0;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  bottom: -32px;
  left: 0;
  right: 0;
  height: 64px;
  background: var(--color-accent);
  transform: skewY(-2deg);
  opacity: 0.9;
  z-index: 1;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 48px;
}

.page-about .about-hero__overline {
  color: var(--color-highlight);
  letter-spacing: 0.22em;
  font-weight: 700;
  margin-bottom: 18px;
  display: inline-block;
}

.page-about .about-hero__title {
  color: var(--color-bg);
  font-size: 40px;
  line-height: 1.15;
  margin: 0 0 20px;
  letter-spacing: -0.01em;
}

.page-about .about-hero__lead {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-light-blue-2);
  max-width: 560px;
  margin: 0 0 32px;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-about .about-hero__actions .btn-outline {
  border-color: var(--color-light-blue);
  color: var(--color-light-blue);
}

.page-about .about-hero__actions .btn-outline:hover {
  background: rgba(168, 192, 216, 0.14);
  border-color: var(--color-highlight);
  color: var(--color-highlight);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.page-about .hero-stat {
  background: rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-medium);
  padding: 20px 18px;
  border-left: 4px solid var(--color-accent);
  backdrop-filter: blur(4px);
  transition: transform 0.2s ease, background 0.2s ease;
}

.page-about .hero-stat:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.12);
}

.page-about .hero-stat__number {
  display: block;
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-highlight);
}

.page-about .hero-stat__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--color-light-blue);
}

/* ---------- 通用编号 ---------- */
.page-about .section-index {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.page-about .section-index::after {
  content: "";
  display: inline-block;
  width: 48px;
  height: 4px;
  background: var(--color-accent);
  border-radius: var(--radius-pill);
  transform: skewX(-28deg);
}

/* ---------- 品牌使命与愿景 ---------- */
.page-about .mission-section {
  background: var(--color-bg);
}

.page-about .mission-layout {
  display: grid;
  gap: 36px;
}

.page-about .mission-left {
  padding-right: 24px;
}

.page-about .mission-right {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
}

.page-about .mission-copy {
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-dark);
  margin: 0;
}

.page-about .mission-points {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
  width: 100%;
}

.page-about .mission-points li {
  position: relative;
  padding: 18px 20px 18px 26px;
  background: #ffffff;
  border-radius: var(--radius-medium);
  box-shadow: 0 4px 14px rgba(11, 27, 61, 0.06);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-muted);
}

.page-about .mission-points li::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 24px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-highlight);
  box-shadow: 0 0 0 4px rgba(182, 255, 60, 0.25);
}

/* ---------- 发展历程 ---------- */
.page-about .timeline-section {
  background: var(--color-light-blue-2);
}

.page-about .timeline-header {
  max-width: 640px;
}

.page-about .timeline-banner {
  margin-top: 36px;
}

.page-about .timeline-banner__img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-card);
  object-fit: cover;
  box-shadow: var(--shadow-primary);
}

.page-about .timeline-banner .img-caption {
  margin-top: 10px;
}

.page-about .timeline-list {
  margin-top: 48px;
  display: grid;
  gap: 14px;
  position: relative;
}

.page-about .timeline-list::before {
  content: "";
  position: absolute;
  left: 26px;
  top: 16px;
  bottom: 16px;
  width: 3px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-highlight));
  border-radius: var(--radius-pill);
  opacity: 0.7;
}

.page-about .timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  background: var(--color-bg);
  border-radius: var(--radius-card);
  padding: 24px 22px;
  transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.page-about .timeline-item:hover {
  background: #ffffff;
  transform: translateY(-3px);
  box-shadow: var(--shadow-primary-hover);
}

.page-about .timeline-item__num {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--color-accent);
  line-height: 1.3;
  position: relative;
  z-index: 1;
}

.page-about .timeline-item__num::after {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 14px;
  height: 14px;
  background: var(--color-bg);
  border: 3px solid var(--color-accent);
  border-radius: 4px;
  transform: rotate(45deg);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.page-about .timeline-item:hover .timeline-item__num::after {
  opacity: 1;
}

.page-about .timeline-item__year {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
}

.page-about .timeline-item__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-muted);
}

/* ---------- 技术与研发 ---------- */
.page-about .tech-section {
  background: var(--color-bg);
}

.page-about .tech-layout {
  display: grid;
  gap: 40px;
}

.page-about .tech-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-about .tech-list {
  list-style: none;
  padding: 0;
  margin: 28px 0 32px;
  display: grid;
  gap: 16px;
  width: 100%;
}

.page-about .tech-list li {
  background: #ffffff;
  border-radius: var(--radius-medium);
  padding: 22px 24px;
  box-shadow: 0 4px 14px rgba(11, 27, 61, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-about .tech-list li:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-primary-hover);
}

.page-about .tech-list strong {
  display: block;
  position: relative;
  padding-left: 18px;
  font-size: 17px;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.page-about .tech-list strong::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 5px;
  height: 18px;
  background: var(--color-accent);
  border-radius: 4px;
  transform: skewX(-14deg);
}

.page-about .tech-list span {
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-muted);
  display: block;
}

.page-about .tech-media {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-about .tech-media__img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-card);
  object-fit: cover;
  box-shadow: var(--shadow-primary);
}

.page-about .tech-radar {
  width: 100%;
  max-width: 420px;
  height: auto;
  align-self: center;
  background: #ffffff;
  border-radius: var(--radius-card);
  padding: 16px;
  box-shadow: 0 6px 18px rgba(11, 27, 61, 0.08);
}

.page-about .tech-radar .radar-label {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  fill: var(--color-muted);
}

/* ---------- 数据与生态合作 ---------- */
.page-about .ecosystem-section {
  background: var(--color-primary);
  color: var(--color-bg);
}

.page-about .ecosystem-section .section-title {
  color: var(--color-bg);
}

.page-about .ecosystem-section .section-subtitle {
  color: var(--color-light-blue);
}

.page-about .ecosystem-section .section-index {
  color: var(--color-highlight);
}

.page-about .ecosystem-section .section-index::after {
  background: var(--color-highlight);
}

.page-about .ecosystem-layout {
  display: grid;
  gap: 40px;
  margin-top: 40px;
}

.page-about .ecosystem-media__img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-card);
  object-fit: cover;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.page-about .ecosystem-media .img-caption {
  color: var(--color-light-blue);
  margin-top: 10px;
}

.page-about .ecosystem-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.page-about .eco-stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.page-about .eco-stat {
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-medium);
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-bottom: 3px solid var(--color-accent);
  transition: transform 0.2s ease, background 0.2s ease;
}

.page-about .eco-stat:hover {
  transform: translateY(-3px);
  background: rgba(255, 255, 255, 0.1);
}

.page-about .eco-stat .data-number {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 700;
  color: var(--color-highlight);
  line-height: 1.1;
}

.page-about .eco-stat span:last-child {
  font-size: 14px;
  color: var(--color-light-blue);
}

.page-about .ecosystem-copy {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-light-blue-2);
}

.page-about .eco-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .eco-tags .chip {
  background: rgba(182, 255, 60, 0.1);
  color: var(--color-highlight);
  border-radius: var(--radius-pill);
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
}

/* ---------- 团队规模 ---------- */
.page-about .team-section {
  background: var(--color-bg);
}

.page-about .team-layout {
  display: grid;
  gap: 36px;
}

.page-about .team-copy {
  padding-right: 20px;
}

.page-about .team-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 20px;
}

.page-about .team-number-block {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-about .team-number {
  font-family: var(--font-display);
  font-size: 88px;
  font-weight: 700;
  line-height: 0.95;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .team-label {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-muted);
}

.page-about .team-ratio {
  width: 100%;
}

.page-about .team-ratio__bar {
  height: 30px;
  background: var(--color-light-blue-2);
  border-radius: var(--radius-pill);
  overflow: hidden;
}

.page-about .team-ratio__fill {
  display: flex;
  align-items: center;
  height: 100%;
  min-width: 150px;
  padding: 0 16px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-accent), #ff8a5c);
  color: #ffffff;
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.page-about .team-ratio__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin-top: 10px;
  font-size: 13px;
  color: var(--color-muted);
}

.page-about .team-ratio__legend span {
  position: relative;
  padding-left: 14px;
}

.page-about .team-ratio__legend span::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

.page-about .team-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-muted);
}

/* ---------- 资质与荣誉 ---------- */
.page-about .honors-section {
  background: var(--color-dark);
  color: var(--color-bg);
}

.page-about .honors-section .section-title {
  color: var(--color-bg);
}

.page-about .honors-section .section-subtitle {
  color: var(--color-light-blue);
}

.page-about .honors-section .section-index {
  color: var(--color-highlight);
}

.page-about .honors-section .section-index::after {
  background: var(--color-highlight);
}

.page-about .honors-grid {
  display: grid;
  gap: 20px;
  margin-top: 40px;
}

.page-about .honor-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-card);
  background: rgba(255, 255, 255, 0.05);
  padding: 32px 28px;
  transition: background 0.25s ease, transform 0.25s ease;
}

.page-about .honor-card::before {
  content: "";
  position: absolute;
  right: -34px;
  top: -34px;
  width: 96px;
  height: 96px;
  border-radius: 24px;
  background: var(--color-highlight);
  opacity: 0.08;
  transform: rotate(22deg);
}

.page-about .honor-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
}

.page-about .honor-card__code {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-highlight);
  background: rgba(182, 255, 60, 0.1);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  margin-bottom: 16px;
}

.page-about .honor-card h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
  color: var(--color-bg);
}

.page-about .honor-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-light-blue);
}

/* ---------- 底部引导 ---------- */
.page-about .about-cta-section {
  background: var(--color-bg);
}

.page-about .about-cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 24px;
  border-radius: var(--radius-card);
  border-left: 6px solid var(--color-accent);
  background: var(--color-light-blue-2);
  padding: 36px 32px;
}

.page-about .about-cta__title {
  margin: 0;
  font-size: 24px;
  font-weight: 800;
  color: var(--color-primary);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 平板及以上栅格 ---------- */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 132px 0 104px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: 1.2fr 0.9fr;
    gap: 56px;
    align-items: center;
  }

  .page-about .about-hero__title {
    font-size: 52px;
  }

  .page-about .about-hero__stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .page-about .mission-layout {
    grid-template-columns: 0.9fr 1.2fr;
    gap: 56px;
  }

  .page-about .timeline-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    align-items: start;
  }

  .page-about .timeline-list::before {
    left: auto;
    right: 50%;
    width: 3px;
    transform: translateX(1px);
  }

  .page-about .timeline-item:first-child,
  .page-about .timeline-item:nth-child(even) {
    margin-right: 0;
  }

  .page-about .timeline-item {
    grid-template-columns: 64px 1fr;
    padding: 28px 26px;
  }

  .page-about .tech-layout {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 56px;
    align-items: start;
  }

  .page-about .ecosystem-layout {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
  }

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

  .page-about .team-layout {
    grid-template-columns: 0.8fr 1.2fr;
    gap: 56px;
  }

  .page-about .honors-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .page-about .about-cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 40px 44px;
  }
}

/* ---------- 桌面优化 ---------- */
@media (min-width: 1024px) {
  .page-about .about-hero {
    padding: 148px 0 116px;
  }

  .page-about .about-hero__title {
    font-size: 60px;
  }

  .page-about .about-hero__lead {
    font-size: 18px;
  }

  .page-about .hero-stat {
    padding: 24px 22px;
  }

  .page-about .hero-stat__number {
    font-size: 40px;
  }

  .page-about .mission-points {
    gap: 16px;
  }

  .page-about .timeline-list {
    gap: 24px;
  }

  .page-about .tech-radar {
    max-width: 440px;
  }

  .page-about .eco-stat {
    padding: 26px 22px;
  }

  .page-about .honor-card {
    padding: 36px 32px;
  }
}