/* ============================================================
   品牌故事页面 · page-about 专属样式
   移动端优先，桌面端增强
   ============================================================ */
.page-about {
  --pa-bg: #0A1B2A;
  --pa-bg-2: #14304A;
  --pa-ink: #040A10;
  --pa-mist: #F8FAFC;
  --pa-line: #E2E8F0;
  --pa-orange: #FF6B35;
  --pa-orange-2: #FF9A76;
  --pa-cyan: #00E5FF;
  --pa-cyan-2: #80F2FF;
  --pa-green: #10B981;
  background: var(--pa-bg);
  color: var(--pa-mist);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-about img {
  max-width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

.page-about .container {
  width: min(1240px, 92vw);
  margin-inline: auto;
}

.page-about .section-label {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--pa-cyan);
  margin: 0 0 12px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.page-about .section-label::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--pa-orange);
  flex: none;
}

.page-about .lead-text {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(248, 250, 252, .78);
  max-width: 680px;
}

/* ---------- 首屏 hero ---------- */
.page-about .about-hero {
  position: relative;
  padding: 48px 0 56px;
  background:
    linear-gradient(150deg, rgba(20, 48, 74, .65) 0%, rgba(10, 27, 42, .88) 48%, rgba(4, 10, 16, .96) 100%),
    repeating-linear-gradient(45deg, rgba(0, 229, 255, .035) 0, rgba(0, 229, 255, .035) 1px, transparent 1px, transparent 14px);
  border-bottom: 1px solid rgba(0, 229, 255, .22);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -60px;
  top: 24px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 53, .22), transparent 70%);
  pointer-events: none;
}

.page-about .about-hero-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(226, 232, 240, .14);
}

.page-about .about-hero-code {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--pa-cyan);
  background: rgba(0, 229, 255, .08);
  padding: 6px 12px;
  border: 1px solid rgba(0, 229, 255, .28);
}

.page-about .about-hero-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: start;
  position: relative;
  z-index: 1;
}

.page-about .about-hero-copy h1 {
  font-family: var(--font-head);
  font-size: clamp(34px, 6.2vw, 58px);
  line-height: 1.08;
  letter-spacing: .015em;
  text-transform: uppercase;
  margin: 10px 0 22px;
  color: var(--pa-mist);
}

.page-about .about-hero-copy .lead-text {
  max-width: 640px;
}

/* hero 数据面板 */
.page-about .about-hero-panel {
  background: linear-gradient(180deg, rgba(20, 48, 74, .92), rgba(4, 10, 16, .94));
  border: 1px solid rgba(0, 229, 255, .28);
  clip-path: polygon(4% 0, 100% 0, 96% 100%, 0 100%);
  padding: 30px 24px 26px 34px;
  position: relative;
}

.page-about .about-hero-panel-head {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: rgba(248, 250, 252, .62);
  margin-bottom: 22px;
}

.page-about .about-hero-panel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--pa-orange);
  box-shadow: 0 0 12px rgba(255, 107, 53, .85);
}

.page-about .about-hero-panel-id {
  margin-left: auto;
  color: var(--pa-cyan);
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero-stat {
  padding: 14px 16px;
  background: rgba(248, 250, 252, .045);
  border-left: 3px solid var(--pa-orange);
}

.page-about .about-hero-stat:nth-child(4n + 2),
.page-about .about-hero-stat:nth-child(4n + 3) {
  border-left-color: var(--pa-cyan);
}

.page-about .about-hero-stat dt {
  font-size: 13px;
  color: rgba(248, 250, 252, .6);
  margin: 0 0 6px;
}

.page-about .about-hero-stat dd {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-about .about-hero-stat strong {
  font-family: var(--font-head);
  font-size: 34px;
  line-height: 1;
  color: var(--pa-mist);
}

.page-about .about-hero-stat span {
  font-size: 13px;
  color: var(--pa-cyan);
}

.page-about .about-hero-foot {
  margin-top: 20px;
  padding-top: 14px;
  border-top: 1px dashed rgba(226, 232, 240, .2);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--pa-orange-2);
}

/* ---------- 通用 section ---------- */
.page-about .about-section {
  padding: 72px 0;
  position: relative;
}

.page-about .about-section:nth-of-type(even) {
  background: linear-gradient(180deg, rgba(20, 48, 74, .22), rgba(4, 10, 16, .4));
}

.page-about .about-section-head {
  margin-bottom: 44px;
  position: relative;
}

.page-about .about-section-head h2 {
  font-family: var(--font-head);
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.15;
  margin: 0 0 14px;
  color: var(--pa-mist);
  text-transform: uppercase;
}

/* ---------- 01 品牌缘起 ---------- */
.page-about .about-origin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

.page-about .about-origin-media {
  position: relative;
  max-width: 560px;
}

.page-about .about-origin-img {
  width: 100%;
  border-radius: 4px 24px 4px 24px;
  border: 1px solid rgba(0, 229, 255, .24);
  box-shadow: 0 16px 40px rgba(4, 10, 16, .55);
  aspect-ratio: 3 / 2;
}

.page-about .about-origin-badge {
  position: absolute;
  right: -12px;
  bottom: -18px;
  background: var(--pa-orange);
  color: #fff;
  padding: 18px 20px;
  clip-path: polygon(6% 0, 100% 0, 94% 100%, 0 100%);
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  box-shadow: 0 10px 28px rgba(255, 107, 53, .38);
}

.page-about .about-origin-badge-year {
  font-family: var(--font-head);
  font-size: 30px;
}

.page-about .about-origin-badge-text {
  font-size: 13px;
  letter-spacing: .1em;
  opacity: .92;
}

.page-about .about-origin-copy h2 {
  font-family: var(--font-head);
  font-size: clamp(26px, 3.6vw, 38px);
  line-height: 1.16;
  margin: 0 0 16px;
  color: var(--pa-mist);
  text-transform: uppercase;
}

.page-about .about-origin-lead {
  font-size: 18px;
  font-weight: 600;
  color: var(--pa-cyan-2);
  margin: 0 0 16px;
}

.page-about .about-origin-copy p:not(.about-origin-lead) {
  font-size: 15px;
  color: rgba(248, 250, 252, .72);
  margin: 0 0 18px;
}

.page-about .about-origin-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-origin-list li {
  position: relative;
  padding: 10px 14px 10px 30px;
  background: rgba(20, 48, 74, .5);
  border-left: 3px solid var(--pa-cyan);
  font-size: 14px;
  color: rgba(248, 250, 252, .86);
}

.page-about .about-origin-list li::before {
  content: "▸";
  position: absolute;
  left: 12px;
  color: var(--pa-orange);
}

/* ---------- 02 发展历程 时间轴 ---------- */
.page-about .about-timeline {
  position: relative;
  padding: 8px 0 0;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--pa-cyan) 12%, var(--pa-orange) 82%, transparent);
}

.page-about .timeline-item {
  position: relative;
  padding: 0 0 36px 48px;
}

.page-about .timeline-item:last-child {
  padding-bottom: 8px;
}

.page-about .timeline-marker {
  position: absolute;
  left: 3px;
  top: 4px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--pa-cyan);
  border: 4px solid var(--pa-bg);
  box-shadow: 0 0 0 1px var(--pa-cyan), 0 0 14px rgba(0, 229, 255, .6);
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-about .timeline-marker span {
  font-family: var(--font-mono);
  font-size: 8px;
  font-weight: 700;
  color: var(--pa-bg);
}

.page-about .timeline-card {
  background: linear-gradient(135deg, rgba(20, 48, 74, .85), rgba(4, 10, 16, .9));
  border: 1px solid rgba(226, 232, 240, .12);
  border-radius: 4px 18px 4px 18px;
  padding: 22px 24px;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.page-about .timeline-card:hover {
  transform: translateX(4px) rotate(-.4deg);
  border-color: rgba(0, 229, 255, .45);
  box-shadow: 0 12px 30px rgba(4, 10, 16, .45);
}

.page-about .timeline-card h3 {
  font-family: var(--font-head);
  font-size: 22px;
  line-height: 1.2;
  color: var(--pa-orange);
  margin: 0 0 8px;
  text-transform: uppercase;
}

.page-about .timeline-card p {
  font-size: 14px;
  color: rgba(248, 250, 252, .74);
  margin: 0;
}

/* ---------- 03 服务理念 ---------- */
.page-about .about-philosophy-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
  align-items: start;
}

.page-about .about-philosophy-copy h2 {
  font-family: var(--font-head);
  font-size: clamp(26px, 3.6vw, 38px);
  line-height: 1.16;
  margin: 0 0 14px;
  color: var(--pa-mist);
  text-transform: uppercase;
}

.page-about .philosophy-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .philosophy-item {
  display: flex;
  gap: 18px;
  padding: 20px 18px;
  background: rgba(248, 250, 252, .03);
  border: 1px solid rgba(226, 232, 240, .08);
  border-left: 4px solid var(--pa-cyan);
  border-radius: 2px 14px 2px 14px;
  transition: background .25s ease;
}

.page-about .philosophy-item:hover {
  background: rgba(20, 48, 74, .6);
}

.page-about .philosophy-num {
  font-family: var(--font-head);
  font-size: 26px;
  color: var(--pa-orange);
  flex: none;
  line-height: 1;
}

.page-about .philosophy-content h3 {
  font-family: var(--font-head);
  font-size: 20px;
  color: var(--pa-mist);
  margin: 0 0 6px;
  text-transform: uppercase;
  letter-spacing: .02em;
}

.page-about .philosophy-content p {
  font-size: 14px;
  color: rgba(248, 250, 252, .72);
  margin: 0;
}

.page-about .about-philosophy-media {
  position: relative;
  max-width: 480px;
}

.page-about .about-philosophy-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 50% 6px 50% 6px;
  border: 1px solid rgba(255, 107, 53, .35);
  box-shadow: 0 18px 44px rgba(4, 10, 16, .55);
}

.page-about .about-philosophy-quote {
  position: relative;
  margin-top: -42px;
  margin-left: 16px;
  background: var(--pa-orange);
  color: #fff;
  padding: 20px 24px 20px 32px;
  clip-path: polygon(2% 0, 100% 0, 98% 100%, 0 100%);
  max-width: 340px;
  box-shadow: 0 10px 26px rgba(255, 107, 53, .3);
}

.page-about .about-philosophy-quote blockquote {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
}

/* ---------- 04 数据能力 ---------- */
.page-about .about-capability-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
  margin-bottom: 36px;
}

.page-about .about-capability-chart {
  background: linear-gradient(160deg, rgba(20, 48, 74, .7), rgba(4, 10, 16, .88));
  border: 1px solid rgba(0, 229, 255, .18);
  border-radius: 6px 28px 6px 28px;
  padding: 24px 12px;
}

.page-about .radar-svg {
  width: 100%;
  max-width: 400px;
  height: auto;
  margin-inline: auto;
  display: block;
}

.page-about .radar-ring {
  fill: none;
  stroke: rgba(0, 229, 255, .16);
  stroke-width: 1;
}

.page-about .radar-axis {
  stroke: rgba(226, 232, 240, .16);
  stroke-width: 1;
}

.page-about .radar-data {
  fill: rgba(0, 229, 255, .22);
  stroke: var(--pa-cyan);
  stroke-width: 2;
}

.page-about .radar-dot {
  fill: var(--pa-orange);
}

.page-about .radar-label {
  fill: rgba(248, 250, 252, .78);
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
}

.page-about .capability-flow {
  display: grid;
  gap: 14px;
}

.page-about .capability-flow-step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 18px;
  background: rgba(248, 250, 252, .03);
  border-left: 3px solid var(--pa-cyan);
  border-radius: 2px 12px 2px 12px;
  position: relative;
}

.page-about .capability-flow-step:nth-child(odd) {
  border-left-color: var(--pa-orange);
  transform: rotate(-.2deg);
}

.page-about .capability-flow-step:nth-child(even) {
  transform: rotate(.2deg);
}

.page-about .capability-flow-num {
  font-family: var(--font-head);
  font-size: 22px;
  color: var(--pa-orange);
  flex: none;
  line-height: 1;
}

.page-about .capability-flow-step p {
  font-size: 14px;
  color: rgba(248, 250, 252, .76);
  margin: 0;
}

.page-about .capability-flow-step p strong {
  color: var(--pa-cyan-2);
  font-weight: 600;
  display: block;
  font-size: 15px;
  margin-bottom: 2px;
}

.page-about .about-capability-media {
  position: relative;
  max-width: 1200px;
  border-radius: 4px 22px 4px 22px;
  overflow: hidden;
  border: 1px solid rgba(0, 229, 255, .2);
}

.page-about .about-capability-img {
  width: 100%;
  aspect-ratio: 16 / 9;
}

.page-about .about-capability-media-overlay {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to top, rgba(4, 10, 16, .92), transparent);
  padding: 30px 24px 18px;
  pointer-events: none;
}

.page-about .about-capability-media-overlay p {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--pa-cyan-2);
  letter-spacing: .04em;
}

/* ---------- 05 合作生态 ---------- */
.page-about .about-eco-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-about .about-eco-card {
  position: relative;
  background: linear-gradient(145deg, rgba(20, 48, 74, .78), rgba(4, 10, 16, .85));
  border: 1px solid rgba(226, 232, 240, .1);
  border-radius: 4px 20px 4px 20px;
  padding: 28px 24px 24px 28px;
  overflow: hidden;
  transition: transform .25s ease, border-color .25s ease;
}

.page-about .about-eco-card::after {
  content: "";
  position: absolute;
  right: -24px;
  bottom: -24px;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 53, .18), transparent 70%);
}

.page-about .about-eco-card:hover {
  transform: translateY(-4px) rotate(-.4deg);
  border-color: rgba(255, 107, 53, .4);
}

.page-about .about-eco-card:nth-child(even) {
  border-radius: 20px 4px 20px 4px;
}

.page-about .about-eco-card:nth-child(even)::after {
  background: radial-gradient(circle, rgba(0, 229, 255, .16), transparent 70%);
}

.page-about .about-eco-num {
  font-family: var(--font-head);
  font-size: 52px;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--pa-cyan);
  display: block;
  margin-bottom: 14px;
}

.page-about .about-eco-card h3 {
  font-family: var(--font-head);
  font-size: 21px;
  color: var(--pa-orange);
  margin: 0 0 8px;
  text-transform: uppercase;
}

.page-about .about-eco-card p {
  font-size: 14px;
  color: rgba(248, 250, 252, .72);
  margin: 0;
}

/* ---------- 底部 next ---------- */
.page-about .about-next {
  padding: 72px 0 88px;
  background:
    linear-gradient(135deg, rgba(255, 107, 53, .16), rgba(0, 229, 255, .06)),
    radial-gradient(circle at 80% 20%, rgba(255, 107, 53, .18), transparent 40%),
    var(--pa-bg);
  border-top: 1px solid rgba(0, 229, 255, .2);
}

.page-about .about-next-inner {
  position: relative;
  padding: 40px 30px;
  background: rgba(4, 10, 16, .55);
  border: 1px solid rgba(255, 107, 53, .3);
  border-radius: 4px 24px 4px 24px;
  overflow: hidden;
}

.page-about .about-next-inner::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  background: linear-gradient(to bottom, var(--pa-cyan), var(--pa-orange));
}

.page-about .about-next h2 {
  font-family: var(--font-head);
  font-size: clamp(26px, 3.6vw, 36px);
  color: var(--pa-mist);
  margin: 0 0 10px;
  text-transform: uppercase;
}

.page-about .about-next-intro {
  font-size: 15px;
  color: rgba(248, 250, 252, .72);
  margin: 0 0 24px;
  max-width: 560px;
}

.page-about .about-next-links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-about .about-next-link {
  display: block;
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--pa-mist);
  background: rgba(20, 48, 74, .6);
  text-decoration: none;
  border-left: 3px solid var(--pa-cyan);
  clip-path: polygon(0 0, 100% 0, calc(100% - 12px) 100%, 0 100%);
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}

.page-about .about-next-link:hover {
  background: var(--pa-orange);
  border-left-color: var(--pa-orange-2);
  color: #fff;
}

/* ============================================================
   桌面端增强
   ============================================================ */
@media (min-width: 768px) {

  /* hero 双栏 */
  .page-about .about-hero {
    padding: 64px 0 72px;
  }

  .page-about .about-hero-layout {
    grid-template-columns: minmax(0, 1.2fr) minmax(320px, .8fr);
    gap: 56px;
  }

  /* 品牌缘起双栏 */
  .page-about .about-origin-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 64px;
  }

  .page-about .about-origin-media {
    max-width: 560px;
  }

  .page-about .about-origin-badge {
    right: -24px;
    bottom: -24px;
  }

  /* 时间轴中心线 + 交替卡片 */
  .page-about .about-timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .timeline-item {
    width: 50%;
    padding: 0 56px 52px 0;
    padding-left: 0;
  }

  .page-about .timeline-item:nth-child(even) {
    margin-left: 50%;
    padding: 0 0 52px 56px;
  }

  .page-about .timeline-item:last-child {
    padding-bottom: 8px;
  }

  .page-about .timeline-marker {
    left: auto;
    right: -13px;
    width: 26px;
    height: 26px;
  }

  .page-about .timeline-item:nth-child(even) .timeline-marker {
    left: -13px;
    right: auto;
  }

  .page-about .timeline-card {
    padding: 24px 30px;
  }

  .page-about .timeline-card:hover {
    transform: translateY(-3px) rotate(0deg);
  }

  /* 晚段节奏放宽松 */
  .page-about .timeline-item:nth-child(5),
  .page-about .timeline-item:nth-child(6),
  .page-about .timeline-item:nth-child(7) {
    margin-top: 12px;
  }

  /* 服务理念双栏 */
  .page-about .about-philosophy-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(320px, .8fr);
    gap: 64px;
  }

  .page-about .about-philosophy-media {
    max-width: 440px;
    margin-top: 60px;
  }

  /* 数据能力双栏 */
  .page-about .about-capability-grid {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: 48px;
  }

  /* 合作生态 2×2 交错 */
  .page-about .about-eco-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .page-about .about-eco-card:nth-child(2) {
    transform: translateY(24px) rotate(.3deg);
  }

  .page-about .about-eco-card:nth-child(3) {
    transform: translateY(12px) rotate(-.3deg);
  }

  .page-about .about-eco-card:nth-child(2):hover,
  .page-about .about-eco-card:nth-child(3):hover {
    transform: translateY(18px) rotate(0deg);
  }

  /* 底部导航 2 列 */
  .page-about .about-next-links {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .page-about .about-next-inner {
    padding: 48px 44px;
  }
}

/* ============================================================
   动效降级
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition: none !important;
    animation: none !important;
  }

  .page-about .about-eco-card,
  .page-about .about-eco-card:nth-child(2),
  .page-about .about-eco-card:nth-child(3) {
    transform: none;
  }

  .page-about .timeline-card:hover {
    transform: none;
  }
}