.page-about {
  --about-line: rgba(192, 192, 192, 0.32);
  --about-glow: rgba(30, 58, 138, 0.42);
  --about-orange-soft: rgba(255, 107, 53, 0.14);
  --about-card-bg: rgba(11, 29, 58, 0.72);
  color: var(--color-white);
  background:
    radial-gradient(circle at 16% 10%, rgba(30, 58, 138, 0.28), transparent 42%),
    radial-gradient(circle at 88% 40%, rgba(255, 107, 53, 0.08), transparent 30%),
    radial-gradient(circle at 48% 88%, rgba(30, 58, 138, 0.18), transparent 36%),
    linear-gradient(180deg, var(--color-abyss) 0%, var(--color-space) 40%, var(--color-abyss) 100%);
  overflow-x: hidden;
}

.page-about .container {
  width: 100%;
  max-width: calc(var(--container-width) + 48px);
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
  box-sizing: border-box;
}

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

.page-about .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 24px;
  padding-bottom: 8px;
  font-size: 13px;
  color: var(--color-silver);
}

.page-about .breadcrumbs a {
  color: var(--color-silver);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--color-orange);
}

.page-about .crumb-sep {
  color: var(--color-orange);
}

.page-about .section-kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-orange);
  margin: 0 0 12px;
}

.page-about .section-head {
  margin-bottom: 32px;
}

.page-about .section-head h2 {
  font-family: var(--font-head);
  font-size: clamp(26px, 5vw, 44px);
  line-height: 1.08;
  margin: 0;
  color: var(--color-white);
}

/* ---------- 英雄区 ---------- */

.page-about .about-hero {
  position: relative;
  padding: 40px 0 52px;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 36px;
  right: -40px;
  width: 240px;
  height: 240px;
  border: 1px solid var(--about-line);
  border-radius: 50%;
  z-index: 0;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: 88px;
  right: -8px;
  width: 140px;
  height: 140px;
  border: 1px dashed rgba(255, 107, 53, 0.4);
  border-radius: 50%;
  z-index: 0;
  pointer-events: none;
}

.page-about .hero-grid {
  position: relative;
  z-index: 1;
}

.page-about .hero-title {
  font-family: var(--font-head);
  font-size: clamp(38px, 8vw, 84px);
  line-height: 0.98;
  letter-spacing: 0.02em;
  margin: 16px 0 20px;
  color: var(--color-white);
}

.page-about .hero-title span {
  display: block;
  color: var(--color-orange);
  font-size: 0.82em;
  padding-left: 0.38em;
  margin-top: 0.08em;
  border-left: 5px solid var(--color-orange);
  line-height: 1.04;
}

.page-about .hero-lead {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.82);
  max-width: 640px;
  margin: 0 0 32px;
}

.page-about .hero-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.page-about .hero-stat {
  position: relative;
  padding: 18px 16px 16px;
  background: var(--about-card-bg);
  border-radius: 16px;
  border: 1px solid rgba(192, 192, 192, 0.16);
  overflow: hidden;
}

.page-about .hero-stat::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--color-orange);
  opacity: 0.9;
}

.page-about .hero-stat strong {
  display: block;
  font-family: var(--font-head);
  font-size: 28px;
  line-height: 1;
  color: var(--color-white);
}

.page-about .hero-stat span {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--color-silver);
  letter-spacing: 0.06em;
}

/* ---------- 品牌理念 ---------- */

.page-about .about-philosophy {
  padding: 56px 0;
}

.page-about .philosophy-layout {
  display: grid;
  gap: 24px;
}

.page-about .philosophy-statement.glass-panel {
  background: var(--color-glass);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(192, 192, 192, 0.18);
  border-radius: 22px;
  padding: 28px 24px;
}

.page-about .statement-lead {
  font-family: var(--font-head);
  font-size: 22px;
  line-height: 1.3;
  color: var(--color-white);
  margin: 0 0 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(192, 192, 192, 0.18);
}

.page-about .philosophy-statement p:not(.statement-lead) {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.8);
  margin: 0 0 14px;
}

.page-about .philosophy-statement p:last-child {
  margin-bottom: 0;
}

.page-about .philosophy-statement a {
  color: var(--color-orange);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .philosophy-statement a:hover,
.page-about .philosophy-statement a:focus-visible {
  color: #ff8b5f;
}

.page-about .philosophy-values {
  display: grid;
  gap: 12px;
}

.page-about .value-item {
  position: relative;
  padding: 20px 18px 18px 64px;
  background: rgba(30, 58, 138, 0.34);
  border-radius: 18px;
  border-left: 3px solid var(--color-orange);
  transition: background 0.25s ease;
}

.page-about .value-item:hover {
  background: rgba(30, 58, 138, 0.52);
}

.page-about .value-num {
  position: absolute;
  left: 16px;
  top: 16px;
  font-family: var(--font-head);
  font-size: 26px;
  color: var(--color-orange);
  line-height: 1;
}

.page-about .value-item h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--color-white);
}

.page-about .value-item p {
  font-size: 13px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.76);
  margin: 0;
}

/* ---------- 发展历程 ---------- */

.page-about .about-journey {
  padding: 56px 0;
  background: linear-gradient(180deg, rgba(10, 20, 40, 0.86), rgba(10, 20, 40, 0.4));
}

.page-about .journey-visual {
  border-radius: 20px;
  overflow: hidden;
  margin-bottom: 36px;
  position: relative;
}

.page-about .journey-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 29, 58, 0.1), rgba(10, 20, 40, 0.44));
  pointer-events: none;
}

.page-about .journey-visual img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .timeline {
  position: relative;
  padding-left: 52px;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-orange), var(--color-electric) 48%, var(--color-silver));
  opacity: 0.7;
}

.page-about .timeline-item {
  position: relative;
  margin-bottom: 28px;
}

.page-about .timeline-item:last-child {
  margin-bottom: 0;
}

.page-about .timeline-node {
  position: absolute;
  left: -52px;
  top: 0;
  width: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  z-index: 2;
}

.page-about .node-version {
  font-family: var(--font-head);
  font-size: 15px;
  color: var(--color-orange);
  white-space: nowrap;
  letter-spacing: 0.04em;
  background: var(--color-abyss);
  padding: 3px 7px;
  border-radius: 20px;
  border: 1px solid rgba(255, 107, 53, 0.42);
}

.page-about .node-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-orange);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.18);
  transition: transform 0.24s ease, box-shadow 0.24s ease;
}

.page-about .timeline-item:hover .node-dot,
.page-about .timeline-item:focus-within .node-dot {
  transform: scale(1.3);
  box-shadow: 0 0 0 8px rgba(255, 107, 53, 0.24);
}

.page-about .timeline-content.glass-panel {
  background: rgba(11, 29, 58, 0.76);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(192, 192, 192, 0.15);
  border-radius: 18px;
  padding: 22px 20px;
  transition: border-color 0.24s ease, transform 0.24s ease;
}

.page-about .timeline-item:hover .timeline-content {
  border-color: rgba(255, 107, 53, 0.42);
  transform: translateX(4px);
}

.page-about .timeline-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-orange);
  background: rgba(255, 107, 53, 0.12);
  border-radius: 20px;
  padding: 4px 12px;
  margin-bottom: 10px;
}

.page-about .timeline-content h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--color-white);
}

.page-about .timeline-content p {
  font-size: 13px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.78);
  margin: 0;
}

.page-about .journey-stats {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  margin-top: 32px;
}

.page-about .stat-block {
  text-align: center;
  padding: 18px 10px 14px;
  background: rgba(10, 20, 40, 0.72);
  border-radius: 16px;
  border: 1px solid rgba(192, 192, 192, 0.14);
}

.page-about .stat-block strong {
  display: block;
  font-family: var(--font-head);
  font-size: 26px;
  color: var(--color-orange);
  line-height: 1.1;
}

.page-about .stat-block span {
  display: block;
  font-size: 11px;
  color: var(--color-silver);
  margin-top: 4px;
}

/* ---------- 核心能力 ---------- */

.page-about .about-capabilities {
  padding: 56px 0;
}

.page-about .capability-layout {
  display: grid;
  gap: 24px;
}

.page-about .capability-figure {
  margin: 0;
  border-radius: 20px;
  overflow: hidden;
  position: relative;
}

.page-about .capability-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 29, 58, 0.06), rgba(10, 20, 40, 0.42));
  pointer-events: none;
}

.page-about .capability-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .capability-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.page-about .capability-card {
  position: relative;
  padding: 18px 14px 14px;
  background: rgba(11, 29, 58, 0.66);
  border-radius: 18px;
  border-top: 2px solid var(--color-orange);
  transition: transform 0.22s ease, background 0.22s ease;
}

.page-about .capability-card:hover {
  transform: translateY(-4px);
  background: rgba(11, 29, 58, 0.88);
}

.page-about .cap-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.86), rgba(11, 29, 58, 0.92));
  border: 1px solid rgba(192, 192, 192, 0.3);
  position: relative;
  margin-bottom: 14px;
}

.page-about .cap-icon-mobile::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 18px;
  height: 26px;
  border-radius: 4px;
  border: 2px solid var(--color-orange);
}

.page-about .cap-icon-mobile::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 6px;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-silver);
}

.page-about .cap-icon-case::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 2px solid var(--color-orange);
  border-radius: 4px;
}

.page-about .cap-icon-case::after {
  content: "";
  position: absolute;
  inset: 13px 10px;
  border: 1px solid var(--color-silver);
  opacity: 0.5;
}

.page-about .cap-icon-service::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) rotate(45deg);
  width: 18px;
  height: 18px;
  border-radius: 4px;
  background: rgba(255, 107, 53, 0.88);
}

.page-about .cap-icon-service::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-space);
}

.page-about .cap-icon-team::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 20px;
  height: 22px;
  border-radius: 4px 4px 10px 10px;
  border: 2px solid var(--color-orange);
}

.page-about .cap-icon-team::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 14px;
  transform: translateX(-50%);
  width: 10px;
  height: 8px;
  border-radius: 50%;
  border-top: 2px solid var(--color-silver);
  opacity: 0.7;
}

.page-about .capability-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-white);
  margin: 0 0 6px;
}

.page-about .capability-card p {
  font-size: 12px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.72);
  margin: 0 0 10px;
}

.page-about .cap-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-orange);
  background: rgba(255, 107, 53, 0.12);
  padding: 3px 10px;
  border-radius: 20px;
}

/* ---------- 用户服务承诺 ---------- */

.page-about .about-service {
  padding: 56px 0;
  background: linear-gradient(180deg, rgba(10, 20, 40, 0.56), rgba(10, 20, 40, 0.88));
}

.page-about .service-layout {
  display: grid;
  gap: 24px;
}

.page-about .service-flow-panel.glass-panel {
  background: rgba(11, 29, 58, 0.8);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(192, 192, 192, 0.14);
  border-radius: 20px;
  padding: 26px 20px;
}

.page-about .service-flow-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-white);
  margin: 0 0 20px;
  text-align: center;
}

.page-about .service-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.page-about .flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  min-width: 82px;
}

.page-about .step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-orange);
  color: var(--color-abyss);
  font-family: var(--font-head);
  font-size: 17px;
  box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.2);
}

.page-about .flow-step p {
  font-size: 12px;
  line-height: 1.4;
  text-align: center;
  color: rgba(255, 255, 255, 0.82);
  margin: 0;
}

.page-about .flow-arrow {
  color: var(--color-orange);
  font-size: 20px;
  font-weight: 700;
}

.page-about .service-flow-note {
  font-size: 12px;
  color: var(--color-silver);
  text-align: center;
  margin: 0;
}

.page-about .service-promises {
  display: grid;
  gap: 12px;
}

.page-about .promise-item {
  padding: 18px 18px 16px;
  background: rgba(11, 29, 58, 0.64);
  border-radius: 16px;
  border-left: 3px solid var(--color-orange);
}

.page-about .promise-item strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 6px;
}

.page-about .promise-item p {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.76);
  margin: 0;
}

/* ---------- 合作生态 ---------- */

.page-about .about-ecosystem {
  padding: 56px 0;
}

.page-about .ecosystem-layout {
  display: grid;
  gap: 24px;
}

.page-about .ecosystem-lead {
  font-size: 15px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.88);
  margin: 0 0 14px;
}

.page-about .ecosystem-info > p {
  font-size: 13px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.76);
  margin: 0 0 20px;
}

.page-about .ecosystem-info a {
  color: var(--color-orange);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .ecosystem-stats {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
  margin-top: 4px;
}

.page-about .eco-stat {
  text-align: center;
  padding: 16px 8px 12px;
  background: rgba(30, 58, 138, 0.36);
  border-radius: 16px;
  border: 1px solid rgba(192, 192, 192, 0.14);
}

.page-about .eco-stat strong {
  display: block;
  font-family: var(--font-head);
  font-size: 24px;
  color: var(--color-orange);
  line-height: 1.1;
}

.page-about .eco-stat span {
  display: block;
  font-size: 11px;
  color: var(--color-silver);
  margin-top: 4px;
}

.page-about .ecosystem-figure {
  margin: 0;
  border-radius: 20px;
  overflow: hidden;
  position: relative;
}

.page-about .ecosystem-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 29, 58, 0.08), rgba(10, 20, 40, 0.46));
  pointer-events: none;
}

.page-about .ecosystem-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- CTA ---------- */

.page-about .about-cta {
  padding: 40px 0 72px;
}

.page-about .cta-panel.glass-panel {
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.55), rgba(11, 29, 58, 0.88));
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 107, 53, 0.32);
  border-radius: 24px;
  padding: 36px 24px;
  text-align: center;
}

.page-about .cta-panel h2 {
  font-family: var(--font-head);
  font-size: 24px;
  line-height: 1.2;
  color: var(--color-white);
  margin: 0 0 12px;
}

.page-about .cta-panel p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.78);
  margin: 0 0 24px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.page-about .cta-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 40px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
}

.page-about .btn-primary {
  background: var(--color-orange);
  color: var(--color-abyss);
  box-shadow: 0 4px 18px rgba(255, 107, 53, 0.32);
}

.page-about .btn-ghost {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.28);
}

.page-about .btn:hover,
.page-about .btn:focus-visible {
  transform: translateY(-2px);
}

/* ---------- 桌面端增强 ---------- */

@media (min-width: 768px) {
  .page-about .hero-title {
    font-size: clamp(56px, 9vw, 96px);
  }

  .page-about .hero-lead {
    font-size: 17px;
    max-width: 720px;
  }

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

  .page-about .philosophy-layout {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }

  .page-about .philosophy-statement.glass-panel {
    padding: 36px 32px;
  }

  .page-about .statement-lead {
    font-size: 26px;
  }

  .page-about .philosophy-values {
    gap: 14px;
  }

  .page-about .capability-layout {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: center;
  }

  .page-about .capability-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .page-about .capability-card {
    padding: 22px 18px 16px;
  }

  .page-about .service-layout {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .page-about .ecosystem-layout {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
  }

  .page-about .cta-panel.glass-panel {
    padding: 48px 40px;
  }

  .page-about .cta-panel h2 {
    font-size: 32px;
  }
}

@media (min-width: 1080px) {
  .page-about .timeline {
    padding-left: 96px;
  }

  .page-about .timeline::before {
    left: 26px;
  }

  .page-about .timeline-node {
    left: -96px;
    width: 56px;
  }

  .page-about .timeline-content.glass-panel {
    padding: 26px 28px;
  }

  .page-about .station-wrap {
    max-width: 190px;
  }
}