.page-about {
  --about-line-white: rgba(255, 255, 255, 0.14);
  --about-line-ink: rgba(16, 24, 32, 0.14);

  font-family: var(--font-body);
  color: var(--ink);
  background: var(--light);
}

/* 分区标题增强 */
.page-about .section-title {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 12px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--deep-blue);
}

.page-about .section-title::before {
  content: attr(data-index);
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--orange);
  background: rgba(255, 107, 53, 0.12);
  padding: 4px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

/* ===== 封面区 ===== */
.page-about .about-hero {
  background-color: var(--deep-blue);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 26px 26px;
  color: var(--white);
  padding: 24px 0 52px;
  position: relative;
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -60px;
  top: 20px;
  width: 200px;
  height: 560px;
  background: linear-gradient(
    135deg,
    transparent 42%,
    rgba(255, 107, 53, 0.28) 42.5%,
    rgba(255, 107, 53, 0.28) 44%,
    transparent 44.5%,
    transparent 58%,
    rgba(0, 230, 118, 0.2) 58.5%,
    rgba(0, 230, 118, 0.2) 60%,
    transparent 60.5%
  );
  transform: rotate(12deg);
  pointer-events: none;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 32px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--about-line-white);
  position: relative;
  z-index: 1;
}

.page-about .about-hero .breadcrumb a {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s var(--ease);
}

.page-about .about-hero .breadcrumb a:hover {
  color: var(--orange);
}

.page-about .about-hero .breadcrumb-sep {
  color: rgba(255, 255, 255, 0.4);
  margin: 0 8px;
}

.page-about .about-hero .breadcrumb-current {
  color: var(--white);
  font-size: 14px;
  font-weight: 600;
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 40px;
  align-items: start;
}

.page-about .about-hero-kicker {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
  margin: 0 0 12px;
}

.page-about .about-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(32px, 5vw, 54px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  max-width: 720px;
}

.page-about .about-hero .page-lead {
  font-size: 16px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.78);
  max-width: 620px;
  margin-bottom: 28px;
}

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

.page-about .about-hero-est {
  margin: 16px 0 0;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.4);
}

/* 身份卡片 */
.page-about .about-id-card {
  background: linear-gradient(160deg, var(--indigo) 0%, #241a36 100%);
  border: 1px solid var(--about-line-white);
  border-radius: 0 14px 0 14px;
  padding: 24px 22px;
  position: relative;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.25);
}

.page-about .about-id-card::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 40px;
  height: 40px;
  border-right: 3px solid var(--green);
  border-bottom: 3px solid var(--green);
  border-radius: 0 0 12px 0;
}

.page-about .about-id-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--about-line-white);
}

.page-about .about-id-code {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.5);
}

.page-about .about-id-list {
  margin: 0;
  padding: 0;
}

.page-about .about-id-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--about-line-white);
}

.page-about .about-id-row:last-child {
  border-bottom: 0;
}

.page-about .about-id-row dt {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.62);
}

.page-about .about-id-row dd {
  margin: 0;
  font-family: var(--font-data);
  font-size: 16px;
  font-weight: 700;
  color: var(--green);
}

.page-about .about-id-note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--about-line-white);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.45);
}

/* ===== 品牌故事 ===== */
.page-about .about-story {
  background: var(--light);
  padding: 56px 0 64px;
  position: relative;
  overflow: hidden;
}

.page-about .about-story::after {
  content: "";
  display: block;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--orange) 0 30%,
    var(--indigo) 30% 60%,
    var(--deep-blue) 60% 100%
  );
}

.page-about .about-story-inner {
  display: grid;
  gap: 36px;
  padding-bottom: 48px;
}

.page-about .about-story .section-title {
  margin-bottom: 12px;
}

.page-about .about-story-lead {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin: 12px 0 16px;
  line-height: 1.6;
}

.page-about .about-story-text p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--gray);
  margin-bottom: 16px;
}

.page-about .about-story-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 28px 0 20px;
}

.page-about .about-stat {
  border-left: 3px solid var(--orange);
  padding-left: 12px;
}

.page-about .about-stat-num {
  display: block;
  font-family: var(--font-data);
  font-size: 26px;
  font-weight: 700;
  color: var(--deep-blue);
  line-height: 1.2;
}

.page-about .about-stat-label {
  font-size: 12px;
  color: var(--gray);
  margin-top: 4px;
}

.page-about .about-story-more {
  margin-top: 8px;
}

.page-about .about-story-more a {
  color: var(--deep-blue);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
  padding-bottom: 2px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-story-more a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-about .about-story-media {
  margin: 0;
  position: relative;
}

.page-about .about-story-media::before {
  content: "";
  position: absolute;
  top: -12px;
  right: -12px;
  width: 96px;
  height: 96px;
  background: linear-gradient(135deg, transparent 49%, var(--orange) 49% 51%, transparent 51%);
  z-index: 0;
}

.page-about .about-story-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  border-radius: 0 16px 0 16px;
  border: 1px solid var(--about-line-ink);
  position: relative;
  z-index: 1;
  filter: saturate(0.9) contrast(1.05);
}

.page-about .about-story-media figcaption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--gray);
  text-align: right;
  padding-right: 20px;
}

/* ===== 发展里程碑 ===== */
.page-about .about-milestones {
  background-color: var(--deep-blue);
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--white);
  padding: 56px 0 64px;
  position: relative;
}

.page-about .about-milestones::after {
  content: "MILESTONE / 2020 — 2025";
  position: absolute;
  right: 20px;
  bottom: 12px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.28);
}

.page-about .about-milestone-head {
  display: grid;
  gap: 8px;
  margin-bottom: 28px;
}

.page-about .about-milestones .section-title {
  color: var(--white);
  margin: 0;
}

.page-about .about-milestones .section-title::before {
  background: rgba(0, 230, 118, 0.14);
  color: var(--green);
}

.page-about .about-milestone-lead {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
  max-width: 480px;
}

.page-about .about-milestone-banner {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 1;
  object-fit: cover;
  display: block;
  border-radius: 0 12px 0 12px;
  margin-bottom: 40px;
  opacity: 0.85;
}

/* 时间线 */
.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--green) 0%, var(--orange) 100%);
  opacity: 0.5;
}

.page-about .about-tl-item {
  position: relative;
  padding-left: 36px;
  margin-bottom: 32px;
}

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

.page-about .about-tl-dot {
  position: absolute;
  left: 0;
  top: 18px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--deep-blue);
  border: 3px solid var(--green);
  box-shadow: 0 0 0 4px rgba(0, 230, 118, 0.12);
  transition: transform 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .about-tl-item:hover .about-tl-dot {
  transform: scale(1.35);
  background: var(--green);
}

.page-about .about-tl-content {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-left: 3px solid var(--green);
  border-radius: 0 12px 0 12px;
  padding: 16px 18px;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-tl-item:hover .about-tl-content {
  background: rgba(255, 255, 255, 0.08);
  border-left-color: var(--orange);
}

.page-about .about-tl-year {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--green);
  background: rgba(0, 230, 118, 0.12);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 8px;
}

.page-about .about-tl-content h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  margin: 0 0 8px;
  color: var(--white);
  letter-spacing: -0.01em;
}

.page-about .about-tl-content p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.72);
}

.page-about .about-tl-link {
  margin-top: 10px;
}

.page-about .about-tl-link a {
  color: var(--orange);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--orange);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .about-tl-link a:hover {
  color: var(--white);
  border-bottom-color: var(--white);
}

/* ===== 核心服务能力 ===== */
.page-about .about-capabilities {
  background: var(--white);
  padding: 56px 0 64px;
}

.page-about .about-caps-head {
  margin-bottom: 28px;
}

.page-about .about-caps-head .section-title {
  color: var(--deep-blue);
  margin-bottom: 10px;
}

.page-about .about-caps-lead {
  margin: 0;
  font-size: 16px;
  color: var(--gray);
  max-width: 560px;
}

.page-about .about-caps-grid {
  display: grid;
  gap: 20px;
  margin-bottom: 40px;
}

.page-about .about-cap-item {
  background: var(--light);
  border: 1px solid var(--about-line-ink);
  padding: 26px 22px;
  position: relative;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-about .about-cap-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(10, 37, 64, 0.1);
}

.page-about .about-cap-num {
  display: block;
  font-family: var(--font-data);
  font-size: 30px;
  font-weight: 700;
  color: var(--orange);
  line-height: 1;
  margin-bottom: 14px;
}

.page-about .about-cap-item h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  margin: 0 0 10px;
  color: var(--deep-blue);
  line-height: 1.4;
}

.page-about .about-cap-desc {
  margin: 0 0 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.6;
}

.page-about .about-cap-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.page-about .about-cap-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--gray);
}

.page-about .about-cap-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  background: var(--green);
  transform: rotate(45deg);
}

.page-about .about-caps-figure {
  margin: 0 auto;
  max-width: 720px;
}

.page-about .about-caps-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
  border-radius: 0 18px 0 18px;
  border: 1px solid var(--about-line-ink);
}

.page-about .about-caps-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--gray);
  text-align: center;
}

/* ===== 数据安全与合规 ===== */
.page-about .about-compliance {
  background: var(--light);
  padding: 56px 0 64px;
}

.page-about .about-compliance > .container > .section-title {
  margin-bottom: 10px;
}

.page-about .about-compliance-lead {
  margin: 0 0 28px;
  font-size: 16px;
  color: var(--gray);
  max-width: 560px;
}

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

.page-about .about-compliance-panel {
  background: var(--white);
  border: 1px solid var(--about-line-ink);
  border-left: 4px solid var(--teal);
  border-radius: 0 12px 0 12px;
  padding: 28px 24px;
}

.page-about .about-compliance-panel h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  margin: 0 0 12px;
  color: var(--deep-blue);
}

.page-about .about-compliance-panel p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
  margin: 0 0 16px;
}

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

.page-about .about-compliance-links li {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.6;
}

.page-about .about-compliance-links a {
  color: var(--deep-blue);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
  padding-bottom: 1px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-compliance-links a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-about .about-compliance-trust {
  margin: 36px 0 0;
  padding-top: 20px;
  border-top: 1px dashed var(--about-line-ink);
  font-size: 13px;
  color: var(--gray);
  text-align: center;
}

/* ===== 桌面端断点 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 32px 0 64px;
  }

  .page-about .about-hero-inner {
    grid-template-columns: 1fr 320px;
    gap: 60px;
    align-items: center;
  }

  .page-about .about-story-inner {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
    align-items: center;
    padding-bottom: 56px;
  }

  .page-about .about-story-text {
    order: 1;
  }

  .page-about .about-story-media {
    order: 2;
  }

  .page-about .about-caps-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-about .about-compliance-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
}

@media (min-width: 992px) {
  .page-about .about-timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .about-tl-item {
    width: 50%;
    padding-left: 0;
    padding-right: 40px;
    margin-bottom: 28px;
  }

  .page-about .about-tl-item:nth-child(even) {
    margin-left: 50%;
    padding-right: 0;
    padding-left: 40px;
  }

  .page-about .about-tl-dot {
    left: auto;
    right: -8px;
  }

  .page-about .about-tl-item:nth-child(even) .about-tl-dot {
    left: -8px;
    right: auto;
  }

  .page-about .about-tl-item:nth-child(even) .about-tl-content {
    border-left: 0;
    border-right: 3px solid var(--green);
  }

  .page-about .about-tl-item:nth-child(even):hover .about-tl-content {
    border-right-color: var(--orange);
  }

  .page-about .about-tl-item:hover .about-tl-content {
    border-left-color: var(--orange);
  }

  .page-about .about-tl-item:nth-child(even):hover .about-tl-content {
    border-right-color: var(--orange);
  }
}