/* ===== 品牌故事 | page-about ===== */
.page-about {
  --about-clip: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
  --about-clip-sm: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  --about-timeline-line: rgba(0, 255, 102, 0.22);
  background-color: var(--c-bg-deep);
  color: var(--c-text);
  overflow-x: hidden;
}

/* —— 面包屑 —— */
.page-about .about-breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: calc(var(--header-h) + 26px);
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--c-text-dim);
}
.page-about .about-breadcrumb a {
  color: var(--c-info);
  text-decoration: none;
  transition: color var(--t-fast);
}
.page-about .about-breadcrumb a:hover {
  color: var(--c-accent);
}
.page-about .about-breadcrumb-sep {
  color: rgba(234, 234, 234, 0.3);
}
.page-about .about-breadcrumb [aria-current="page"] {
  color: var(--c-text-dim);
}

/* —— 首屏 —— */
.page-about .about-hero {
  position: relative;
  padding: 52px 0 72px;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, transparent 0%, rgba(0, 255, 102, 0.035) 42%, transparent 72%),
    linear-gradient(300deg, transparent 0%, rgba(255, 107, 0, 0.03) 60%, transparent 100%);
  pointer-events: none;
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 260px;
  height: 260px;
  background: repeating-linear-gradient(120deg, rgba(0, 255, 102, 0.05) 0 2px, transparent 2px 16px);
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}
.page-about .about-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}
@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: 7fr 5fr;
    gap: 56px;
  }
}
.page-about .about-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  color: var(--c-accent);
  margin-bottom: 18px;
  padding: 6px 14px;
  border: 1px solid var(--c-border-green);
  background: rgba(0, 255, 102, 0.06);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}
.page-about .about-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.7rem);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: 0.01em;
  margin: 0 0 20px;
  max-width: 720px;
}
.page-about .about-hero-lead {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--c-text-dim);
  max-width: 540px;
  margin-bottom: 28px;
}
.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 30px;
}
.page-about .about-hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-hero-facts li {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--c-text-dim);
  border: 1px solid var(--c-border);
  padding: 6px 12px;
  background: rgba(17, 34, 64, 0.6);
}

/* —— 首屏图表板 —— */
.page-about .about-hero-board {
  position: relative;
  padding: 20px;
  background:
    linear-gradient(transparent 93%, rgba(0, 255, 102, 0.05) 93%),
    linear-gradient(90deg, transparent 93%, rgba(0, 255, 102, 0.05) 93%),
    var(--c-bg-panel);
  background-size: 20px 20px, 20px 20px, auto;
  border: 1px solid var(--c-border);
  clip-path: var(--about-clip);
  overflow: hidden;
}
.page-about .about-hero-board::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 64px;
  height: 64px;
  background: var(--c-accent);
  opacity: 0.12;
  clip-path: polygon(0 0, 100% 0, 0 100%);
  pointer-events: none;
}
.page-about .about-hero-board::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 30%, rgba(0, 255, 102, 0.07) 48%, transparent 64%);
  transform: translateX(-110%);
  animation: about-board-scan 4.4s ease-in-out infinite;
  pointer-events: none;
}
@keyframes about-board-scan {
  0% { transform: translateX(-110%); }
  55% { transform: translateX(110%); }
  100% { transform: translateX(110%); }
}
.page-about .about-hero-svg {
  width: 100%;
  height: auto;
  display: block;
}
.page-about .about-chart-grid {
  stroke: rgba(234, 234, 234, 0.12);
  stroke-width: 1;
  stroke-dasharray: 4 6;
}
.page-about .about-chart-line {
  fill: none;
  stroke: var(--c-accent);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 0 6px rgba(0, 255, 102, 0.35));
  stroke-dasharray: 620;
  stroke-dashoffset: 620;
}
.page-about .about-chart-node {
  fill: var(--c-bg-deep);
  stroke: var(--c-accent);
  stroke-width: 3;
}
.page-about .about-chart-text {
  fill: var(--c-text-dim);
  font-family: var(--font-mono);
  font-size: 12px;
  text-anchor: middle;
}
.page-about .about-chart-badge {
  fill: var(--c-accent-orange);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  text-anchor: middle;
}
@media (prefers-reduced-motion: no-preference) {
  .page-about .about-chart-line {
    animation: about-chart-draw 2.2s var(--ease-out) forwards 0.4s;
  }
  .page-about .about-chart-node {
    animation: about-node-pop 0.4s var(--ease-out) forwards 1.6s;
    opacity: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .page-about .about-chart-line {
    stroke-dashoffset: 0;
  }
  .page-about .about-chart-node {
    opacity: 1;
  }
}
@keyframes about-chart-draw {
  to { stroke-dashoffset: 0; }
}
@keyframes about-node-pop {
  from { transform: scale(0.4); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* —— 章节头 —— */
.page-about .about-section-head {
  margin-bottom: 38px;
}
.page-about .about-section-head .section-kicker {
  color: var(--c-accent-orange);
}

/* —— 发展里程碑 —— */
.page-about .about-milestones {
  position: relative;
  padding: 64px 0 72px;
  background: linear-gradient(180deg, var(--c-bg-deep) 0%, rgba(17, 34, 64, 0.42) 100%);
}
.page-about .about-timeline {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 52px;
}
.page-about .about-milestone {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: 22px 0 22px 26px;
  border-left: 2px solid var(--about-timeline-line);
}
.page-about .about-milestone::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 30px;
  width: 12px;
  height: 12px;
  background: var(--c-accent);
  border-radius: 50%;
  box-shadow: 0 0 14px rgba(0, 255, 102, 0.5);
}
.page-about .about-ms-side {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.page-about .about-ms-year,
.page-about .about-ms-period {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1;
  color: var(--c-accent);
  letter-spacing: 0.02em;
}
.page-about .about-ms-period {
  color: var(--c-text);
  font-size: 1.9rem;
}
.page-about .about-ms-tag {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--c-text-dim);
  padding: 4px 10px;
  background: rgba(0, 255, 102, 0.07);
  border-left: 2px solid var(--c-accent);
}
.page-about .about-ms-main {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.page-about .about-ms-text h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: 0.01em;
}
.page-about .about-ms-text p {
  font-size: 0.94rem;
  line-height: 1.66;
  color: var(--c-text-dim);
  margin: 0;
  max-width: 480px;
}
.page-about .about-ms-chart {
  align-self: flex-start;
  padding: 14px;
  background: rgba(0, 255, 102, 0.04);
  border: 1px solid rgba(0, 255, 102, 0.14);
  clip-path: var(--about-clip-sm);
}
.page-about .about-ms-svg {
  width: 120px;
  height: auto;
  display: block;
}
.page-about .about-ms-bars .ms-rect {
  fill: var(--c-accent);
  opacity: 0.72;
}
.page-about .about-ms-bars .ms-rect:last-child {
  opacity: 1;
}
.page-about .about-ms-hub .ms-hub-dot {
  fill: var(--c-accent);
  stroke: var(--c-bg-panel);
  stroke-width: 3;
}
.page-about .about-ms-hub .ms-hub-line {
  stroke: var(--c-info);
  stroke-width: 1.6;
  opacity: 0.65;
}
.page-about .about-ms-trend .ms-trend-line {
  fill: none;
  stroke: var(--c-accent);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.page-about .about-ms-trend .ms-trend-dot {
  fill: var(--c-accent-orange);
  stroke: var(--c-bg-panel);
  stroke-width: 2;
}
.page-about .about-ms-video .ms-video-box {
  fill: rgba(0, 255, 102, 0.05);
  stroke: var(--c-info);
  stroke-width: 1.8;
}
.page-about .about-ms-video .ms-video-play {
  fill: var(--c-accent);
}
@media (min-width: 768px) {
  .page-about .about-milestone {
    grid-template-columns: 220px 1fr;
    gap: 32px;
    padding-left: 36px;
  }
  .page-about .about-ms-main {
    flex-direction: row;
    align-items: center;
    gap: 28px;
  }
  .page-about .about-ms-text {
    flex: 1;
  }
  .page-about .about-ms-chart {
    flex: 0 0 150px;
  }
}

/* —— 起始注记 —— */
.page-about .about-origin {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: center;
  margin-top: 20px;
}
.page-about .about-origin-copy {
  padding: 24px 22px;
  border-left: 3px solid var(--c-accent-orange);
  background: rgba(255, 107, 0, 0.05);
}
.page-about .about-origin-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--c-accent-orange);
  letter-spacing: 0.18em;
}
.page-about .about-origin-copy p {
  margin: 10px 0 0;
  color: var(--c-text-dim);
  line-height: 1.72;
  font-size: 0.94rem;
}
.page-about .about-origin-img {
  margin: 0;
}
.page-about .about-origin-img img,
.page-about .about-cap-visual img,
.page-about .about-vision-media img {
  width: 100%;
  height: auto;
  display: block;
}
@media (min-width: 768px) {
  .page-about .about-origin {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 40px;
  }
}

/* —— 数据能力 —— */
.page-about .about-capability {
  position: relative;
  padding: 72px 0;
  background: linear-gradient(140deg, rgba(17, 34, 64, 0.5), transparent 72%);
}
.page-about .about-cap-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 44px;
}
@media (min-width: 768px) {
  .page-about .about-cap-stats {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
}
.page-about .about-cap-stat {
  padding: 22px 16px;
  border: 1px solid var(--c-border);
  background: var(--c-bg-panel);
  clip-path: var(--about-clip-sm);
  transition: transform var(--t-mid), border-color var(--t-fast);
}
.page-about .about-cap-stat:hover {
  transform: translate(-4px, 4px);
  border-color: var(--c-border-green);
}
.page-about .about-cap-stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  font-weight: 800;
  color: var(--c-accent);
  line-height: 1.15;
}
.page-about .about-cap-stat-label {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--c-text-dim);
}
.page-about .about-cap-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: stretch;
}
@media (min-width: 900px) {
  .page-about .about-cap-body {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 40px;
  }
}
.page-about .about-cap-visual {
  margin: 0;
  align-self: stretch;
}
.page-about .about-cap-visual img {
  height: 100%;
  object-fit: cover;
  min-height: 280px;
  clip-path: var(--about-clip);
}
.page-about .about-cap-points {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.page-about .about-cap-point {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  padding: 16px 14px;
  background: var(--c-bg-panel);
  border: 1px solid var(--c-border);
  clip-path: var(--about-clip-sm);
  transition: transform var(--t-mid), border-color var(--t-fast);
}
.page-about .about-cap-point:hover {
  transform: translate(4px, -4px);
  border-color: var(--c-border-green);
}
.page-about .about-cap-point-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--c-accent);
  line-height: 1.5;
}
.page-about .about-cap-point h3 {
  margin: 0 0 5px;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
}
.page-about .about-cap-point p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.62;
  color: var(--c-text-dim);
}

/* —— 团队与协作 —— */
.page-about .about-team {
  padding: 72px 0;
}
.page-about .about-team-grid {
  gap: 16px;
  margin-bottom: 28px;
}
.page-about .about-team-card {
  position: relative;
  padding: 26px 22px;
  border: 1px solid var(--c-border);
  background: var(--c-bg-panel);
  clip-path: var(--about-clip-sm);
  transition: transform var(--t-mid), border-color var(--t-fast);
}
.page-about .about-team-card::after {
  content: "";
  position: absolute;
  right: 8px;
  top: 8px;
  width: 30px;
  height: 30px;
  background: linear-gradient(135deg, transparent 58%, rgba(255, 107, 0, 0.18) 58%);
  pointer-events: none;
}
.page-about .about-team-card:hover {
  transform: translate(-4px, 4px);
  border-color: var(--c-border-orange);
}
.page-about .about-team-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--c-accent-orange);
  margin-bottom: 12px;
}
.page-about .about-team-card h3 {
  font-family: var(--font-display);
  font-size: 1.28rem;
  font-weight: 700;
  margin: 0 0 8px;
}
.page-about .about-team-card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--c-text-dim);
}
.page-about .about-team-note {
  margin: 0;
  padding: 18px 20px;
  border-left: 3px solid var(--c-accent);
  background: rgba(0, 255, 102, 0.05);
  color: var(--c-text-dim);
  font-size: 0.92rem;
  line-height: 1.72;
}

/* —— 品牌愿景 —— */
.page-about .about-vision {
  padding: 72px 0 96px;
  background: linear-gradient(180deg, transparent, rgba(17, 34, 64, 0.45));
}
.page-about .about-vision-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}
@media (min-width: 900px) {
  .page-about .about-vision-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
  }
}
.page-about .about-vision-media {
  margin: 0;
}
.page-about .about-vision-media img {
  clip-path: var(--about-clip);
  transition: transform var(--t-mid);
}
.page-about .about-vision-media:hover img {
  transform: scale(1.015);
}
.page-about .about-vision-content h3 {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 700;
  margin: 0 0 12px;
}
.page-about .about-vision-content > p {
  margin: 0 0 24px;
  color: var(--c-text-dim);
  line-height: 1.7;
  font-size: 0.95rem;
}
.page-about .about-vision-list {
  list-style: none;
  margin: 0 0 30px;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.page-about .about-vision-list li {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 12px;
  align-items: baseline;
  font-size: 0.92rem;
  line-height: 1.5;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(234, 234, 234, 0.14);
}
.page-about .about-vision-marker {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--c-accent-orange);
}
.page-about .about-vision-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* —— 通用可见性 —— */
@media (prefers-reduced-motion: no-preference) {
  .page-about .about-cap-stat,
  .page-about .about-cap-point,
  .page-about .about-team-card {
    transition: transform var(--t-mid), border-color var(--t-fast);
  }
}
@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}