/* ====== 品牌故事页专属样式 ====== */
.page-about {
  --about-speed: cubic-bezier(0.22, 1, 0.36, 1);
  overflow-x: clip;
}

/* —— 区块基础 —— */
.page-about .about-section {
  padding: 72px 24px;
}
.page-about .container {
  max-width: var(--container);
  margin-inline: auto;
  position: relative;
}
.page-about .section-head {
  margin-bottom: 44px;
}
.page-about .section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.14em;
}
.page-about .section-head h2 {
  margin-top: 10px;
  font-size: clamp(1.75rem, 3.4vw, 2.7rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.01em;
}
.page-about .section-desc {
  margin-top: 14px;
  font-size: 15px;
  line-height: 1.75;
  opacity: 0.72;
  max-width: 640px;
}

/* —— 浅色区块 —— */
.page-about .about-light-section {
  background: var(--c-light);
  color: var(--c-text-dark);
}
.page-about .about-light-section .section-head h2 {
  color: var(--c-text-dark);
}
.page-about .about-light-section .section-desc {
  color: var(--c-text-dark);
}

/* ====== 首屏 Hero ====== */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 100px 24px 88px;
  background: linear-gradient(135deg, #071428 0%, var(--c-bg) 55%, var(--c-bg-purple) 100%);
  isolation: isolate;
}
.page-about .about-hero::before {
  content: '';
  position: absolute;
  right: -12%;
  top: -24%;
  width: 56%;
  height: 140%;
  background: linear-gradient(135deg, rgba(0, 255, 156, 0.1), rgba(255, 106, 0, 0.05));
  transform: skewX(-18deg);
  z-index: -1;
}
.page-about .about-hero::after {
  content: '';
  position: absolute;
  right: 10%;
  bottom: -46%;
  width: 62%;
  height: 110%;
  background: linear-gradient(45deg, rgba(46, 26, 71, 0.85), transparent 72%);
  transform: skewX(14deg);
  z-index: -1;
}
.page-about .about-hero-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.page-about .about-hero-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  margin-top: 44px;
}
.page-about .about-hero-top .section-label {
  color: var(--c-green);
}
.page-about .about-hero h1 {
  margin-top: 36px;
  font-size: clamp(2.8rem, 8vw, 5.6rem);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--c-text-light);
}
.page-about .about-hero-lead {
  margin-top: 18px;
  max-width: 600px;
  font-size: clamp(1rem, 1.8vw, 1.3rem);
  line-height: 1.6;
  color: var(--c-text-light);
  opacity: 0.82;
}
.page-about .about-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 42px;
}
.page-about .hero-meta-item {
  padding: 16px 22px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(6px);
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 132px;
}
.page-about .hero-meta-label {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-light);
  opacity: 0.55;
}
.page-about .hero-meta-item strong {
  font-size: 22px;
  font-weight: 800;
  color: var(--c-green);
  line-height: 1;
}
.page-about .about-hero-scroll {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 52px;
  color: var(--c-text-light);
  text-decoration: none;
  font-size: 14px;
  opacity: 0.72;
  transition: gap 0.4s var(--about-speed), opacity 0.4s var(--about-speed);
}
.page-about .about-hero-scroll::after {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--c-green);
  transition: width 0.4s var(--about-speed);
}
.page-about .about-hero-scroll:hover {
  gap: 16px;
  opacity: 1;
}
.page-about .about-hero-scroll:hover::after {
  width: 48px;
}

/* ====== 01 品牌起源 ====== */
.page-about .about-origin {
  padding: 88px 24px;
}
.page-about .about-origin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}
.page-about .about-origin-copy p {
  margin-bottom: 16px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-text-dark);
  opacity: 0.88;
}
.page-about .about-origin-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.page-about .about-origin-visual {
  border-radius: var(--radius-lg);
  box-shadow: 0 18px 48px rgba(7, 20, 40, 0.18);
}
.page-about .about-origin-visual img,
.page-about .about-team-visual img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

/* ====== 02 发展里程碑 ====== */
.page-about .about-milestones {
  background: linear-gradient(160deg, var(--c-bg) 0%, var(--c-bg-purple) 100%);
  color: var(--c-text-light);
  padding: 88px 24px;
}
.page-about .about-milestones .container {
  max-width: 1180px;
}
.page-about .about-milestones .section-label {
  color: var(--c-orange);
}
.page-about .about-milestones h2 {
  color: var(--c-text-light);
}

/* —— 垂直时间轴 —— */
.page-about .about-timeline {
  position: relative;
  margin-top: 48px;
  padding-left: 44px;
}
.page-about .about-timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 14px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-green) 0%, rgba(0, 255, 156, 0.08) 100%);
  opacity: 0.35;
}
.page-about .timeline-item {
  position: relative;
  margin-bottom: 32px;
}
.page-about .timeline-item:last-child {
  margin-bottom: 0;
}
.page-about .timeline-dot {
  position: absolute;
  left: 8px;
  top: 26px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-green);
  box-shadow: 0 0 0 6px rgba(0, 255, 156, 0.14), 0 0 18px rgba(0, 255, 156, 0.35);
}
.page-about .timeline-year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-orange);
  margin-bottom: 8px;
}
.page-about .timeline-content {
  padding: 20px 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--c-border);
  border-left: 2px solid var(--c-green);
  border-radius: var(--radius-md);
  backdrop-filter: blur(4px);
  transition: transform 0.45s var(--about-speed), background 0.45s var(--about-speed), border-color 0.45s var(--about-speed);
}
.page-about .timeline-content:hover,
.page-about .timeline-item:hover .timeline-content {
  transform: translateY(-4px);
  background: rgba(0, 255, 156, 0.06);
  border-color: rgba(0, 255, 156, 0.5);
}
.page-about .timeline-content h3 {
  font-size: 17px;
  font-weight: 800;
  color: var(--c-text-light);
  margin-bottom: 6px;
}
.page-about .timeline-content p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-light);
  opacity: 0.74;
}

/* —— 图表可视化 —— */
.page-about .about-chart {
  position: relative;
  margin-top: 56px;
  border-radius: var(--radius-lg);
  box-shadow: 0 22px 60px rgba(4, 10, 24, 0.45);
  overflow: hidden;
}
.page-about .about-chart img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}
.page-about .chart-note {
  position: absolute;
  z-index: 2;
  padding: 8px 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-text-light);
  background: rgba(10, 29, 58, 0.78);
  border: 1px solid rgba(0, 255, 156, 0.5);
  border-radius: 999px;
  backdrop-filter: blur(4px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}
.page-about .chart-note--a {
  left: 6%;
  top: 18%;
}
.page-about .chart-note--b {
  right: 6%;
  bottom: 24%;
  border-color: rgba(255, 106, 0, 0.6);
}

/* ====== 03 团队与文化 ====== */
.page-about .about-team {
  padding: 88px 24px;
}
.page-about .about-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}
.page-about .about-team-copy p {
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-text-dark);
  opacity: 0.86;
  margin-bottom: 20px;
}
.page-about .team-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.page-about .team-list li {
  position: relative;
  padding: 16px 18px 16px 48px;
  background: #ffffff;
  border: 1px solid rgba(28, 46, 74, 0.12);
  border-radius: var(--radius-sm);
  font-size: 14px;
  line-height: 1.68;
  color: var(--c-text-dark);
  box-shadow: 0 8px 24px rgba(28, 46, 74, 0.06);
}
.page-about .team-list li::before {
  content: '';
  position: absolute;
  left: 18px;
  top: 22px;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--c-green);
  transform: rotate(45deg);
}
.page-about .team-list strong {
  font-weight: 800;
}
.page-about .about-team-visual {
  border-radius: var(--radius-lg);
  box-shadow: 0 18px 48px rgba(7, 20, 40, 0.16);
}
.page-about .about-team-visual img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

/* —— 价值观卡片 —— */
.page-about .values-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 48px;
}
.page-about .values-grid .print-card {
  padding: 26px 24px;
  background: #ffffff;
  border: 1px solid rgba(28, 46, 74, 0.12);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 28px rgba(28, 46, 74, 0.06);
  transition: transform 0.45s var(--about-speed), box-shadow 0.45s var(--about-speed), border-color 0.45s var(--about-speed);
  position: relative;
  overflow: hidden;
}
.page-about .values-grid .print-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-overlay);
  opacity: 0;
  transition: opacity 0.45s var(--about-speed);
  pointer-events: none;
}
.page-about .values-grid .print-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 255, 156, 0.7);
  box-shadow: 0 16px 40px rgba(28, 46, 74, 0.12);
}
.page-about .values-grid .print-card:hover::after {
  opacity: 1;
}
.page-about .values-grid .print-card h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--c-text-dark);
  margin-top: 12px;
  margin-bottom: 8px;
}
.page-about .values-grid .print-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-dark);
  opacity: 0.74;
  position: relative;
  z-index: 1;
}

/* ====== 04 合作生态 ====== */
.page-about .about-ecosystem {
  background: linear-gradient(150deg, var(--c-bg-deep) 0%, var(--c-bg) 60%, var(--c-bg-purple) 100%);
  color: var(--c-text-light);
  padding: 88px 24px;
}
.page-about .about-ecosystem .section-label {
  color: var(--c-green);
}
.page-about .about-ecosystem h2 {
  color: var(--c-text-light);
}
.page-about .ecosystem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 36px;
}
.page-about .eco-category {
  position: relative;
  padding: 30px 28px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  transition: background 0.45s var(--about-speed), border-color 0.45s var(--about-speed), transform 0.45s var(--about-speed);
}
.page-about .eco-category:hover {
  background: rgba(0, 255, 156, 0.06);
  border-color: rgba(0, 255, 156, 0.45);
  transform: translateY(-4px);
}
.page-about .eco-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-orange);
  letter-spacing: 0.1em;
}
.page-about .eco-category h3 {
  font-size: 19px;
  font-weight: 800;
  color: var(--c-text-light);
  margin-top: 10px;
  margin-bottom: 8px;
}
.page-about .eco-category p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-light);
  opacity: 0.7;
}
.page-about .ecosystem-support {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  margin-top: 40px;
  padding: 26px 28px;
  background: rgba(0, 255, 156, 0.05);
  border-left: 3px solid var(--c-orange);
  border-radius: var(--radius-sm);
}
.page-about .ecosystem-support p {
  flex: 1;
  min-width: 260px;
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-light);
  opacity: 0.82;
}

/* ====== 05 荣誉与认可 ====== */
.page-about .about-trust {
  background: var(--c-light);
  color: var(--c-text-dark);
  padding: 88px 24px;
}
.page-about .about-trust .section-head h2 {
  color: var(--c-text-dark);
}
.page-about .about-trust .section-desc {
  color: var(--c-text-dark);
  opacity: 0.65;
}
.page-about .trust-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 32px;
}
.page-about .trust-card {
  padding: 30px 22px;
  background: #ffffff;
  border: 1px solid rgba(28, 46, 74, 0.12);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 32px rgba(28, 46, 74, 0.07);
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform 0.45s var(--about-speed), box-shadow 0.45s var(--about-speed);
}
.page-about .trust-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 18px 44px rgba(28, 46, 74, 0.12);
}
.page-about .trust-card .stat-num {
  font-size: 34px;
  font-weight: 900;
  line-height: 1;
  color: var(--c-text-dark);
}
.page-about .trust-card .stat-num em {
  font-style: normal;
  font-family: var(--font-mono);
  font-weight: 800;
  color: var(--c-bg);
}
.page-about .trust-card p {
  font-size: 14px;
  color: var(--c-text-dark);
  opacity: 0.68;
  margin: 0;
}
.page-about .about-contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 44px;
}

/* ====== 继续探索 ====== */
.page-about .about-explore {
  background: linear-gradient(135deg, var(--c-bg-deep) 0%, var(--c-bg) 100%);
  color: var(--c-text-light);
  padding: 88px 24px;
}
.page-about .about-explore .section-label {
  color: var(--c-green);
}
.page-about .about-explore h2 {
  color: var(--c-text-light);
}
.page-about .explore-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 36px;
}
.page-about .explore-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 28px 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background 0.45s var(--about-speed), border-color 0.45s var(--about-speed), transform 0.45s var(--about-speed);
}
.page-about .explore-card:hover {
  background: rgba(0, 255, 156, 0.06);
  border-color: rgba(0, 255, 156, 0.5);
  transform: translateY(-4px);
}
.page-about .explore-card .nav-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-orange);
  letter-spacing: 0.1em;
}
.page-about .explore-card h3 {
  font-size: 19px;
  font-weight: 800;
  color: var(--c-text-light);
  margin: 4px 0 2px;
}
.page-about .explore-card p {
  font-size: 14px;
  line-height: 1.68;
  color: var(--c-text-light);
  opacity: 0.66;
  margin: 0;
}

/* ====== 平板与桌面 ====== */
@media (min-width: 640px) {
  .page-about .about-origin-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 48px;
  }
  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 48px;
  }
  .page-about .values-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .trust-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .page-about .explore-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-about .ecosystem-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .page-about .ecosystem-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-about .trust-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-about .explore-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  /* 桌面端时间轴：左右交错 */
  .page-about .about-timeline {
    padding-left: 0;
  }
  .page-about .about-timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }
  .page-about .timeline-item {
    width: calc(50% - 46px);
    margin-bottom: 44px;
  }
  .page-about .timeline-item:nth-child(odd) {
    margin-left: 0;
    margin-right: auto;
    text-align: right;
  }
  .page-about .timeline-item:nth-child(even) {
    margin-left: auto;
    margin-right: 0;
    text-align: left;
  }
  .page-about .timeline-dot {
    left: auto;
    right: -49px;
    top: 26px;
  }
  .page-about .timeline-item:nth-child(even) .timeline-dot {
    left: -49px;
    right: auto;
  }
  .page-about .timeline-content {
    border-left: none;
    border-top: 2px solid var(--c-green);
  }
  .page-about .timeline-item:nth-child(odd) .timeline-content {
    border-right: 2px solid var(--c-green);
    border-top: 1px solid var(--c-border);
    border-bottom: 1px solid var(--c-border);
    border-left: 1px solid var(--c-border);
  }
  .page-about .timeline-item:nth-child(even) .timeline-content {
    border-left: 2px solid var(--c-green);
    border-top: 1px solid var(--c-border);
    border-bottom: 1px solid var(--c-border);
    border-right: 1px solid var(--c-border);
  }
}

@media (min-width: 1200px) {
  .page-about .about-hero {
    padding: 128px 24px 112px;
  }
  .page-about .about-hero h1 {
    font-size: 5.8rem;
  }
  .page-about .about-section {
    padding: 108px 24px;
  }
}