/* ===== 品牌概况页专属样式 ===== */
.page-about {
  background: #F5F7FA;
  color: #0A1220;
}

.page-about__container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 1.5rem 1rem 4.5rem;
}

/* ----- 面包屑局部强化 ----- */
.page-about__breadcrumb {
  margin-bottom: 2rem;
}

.page-about__breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.875rem;
  color: #6B7280;
}

.page-about__breadcrumb a {
  color: #6B7280;
  text-decoration: none;
  transition: color 180ms cubic-bezier(0.4, 0, 0.2, 1);
}

.page-about__breadcrumb a:hover {
  color: #FF6B00;
}

.page-about__breadcrumb li + li::before {
  content: "/";
  margin-right: 0.4rem;
  color: #DCE3EC;
}

.page-about__breadcrumb span[aria-current="page"] {
  color: #122A5A;
  font-weight: 500;
}

/* ----- 品牌简介 ----- */
.page-about__intro {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.page-about__intro-copy .page-about__eyebrow {
  display: inline-block;
  margin: 0 0 0.625rem;
  padding: 0.3rem 0.75rem;
  background: rgba(255, 107, 0, 0.09);
  border-left: 3px solid #FF6B00;
  color: #0B1A3C;
  font-family: "Barlow Condensed", "Noto Sans SC", sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.page-about__intro-copy h1 {
  margin: 0 0 1.25rem;
  padding-left: 1rem;
  border-left: 4px solid #FF6B00;
  font-family: "Barlow Condensed", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: 0.02em;
  color: #0B1A3C;
}

.page-about__intro-copy p:not(.page-about__eyebrow) {
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: #0A1220;
}

.page-about__intro-copy .page-about__lead {
  font-size: 1.0625rem;
  font-weight: 500;
  color: #122A5A;
}

.page-about__intro-panel {
  position: relative;
  align-self: start;
  background: linear-gradient(145deg, #0B1A3C, #122A5A);
  color: #FFFFFF;
  padding: 1.75rem 1.5rem 2rem;
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}

.page-about__intro-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 56px;
  height: 4px;
  background: #FF6B00;
}

.page-about__intro-panel dl {
  margin: 0;
}

.page-about__intro-stat {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.875rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.page-about__intro-stat:last-child {
  border-bottom: 0;
}

.page-about__intro-stat dt {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.72);
}

.page-about__intro-stat .page-about__intro-num {
  margin: 0;
  color: #FF6B00;
  font-family: "DIN Alternate", "Roboto Mono", monospace;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

/* ----- 通用章节标题 ----- */
.page-about__section-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.page-about__section-head .page-about__section-num {
  font-family: "DIN Alternate", "Roboto Mono", monospace;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #FF6B00;
  background: rgba(255, 107, 0, 0.1);
  border: 1px solid rgba(255, 107, 0, 0.2);
  padding: 0.3rem 0.6rem;
}

.page-about__section-head h2 {
  margin: 0;
  font-family: "Barlow Condensed", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #0B1A3C;
}

/* ----- 发展里程碑 ----- */
.page-about__milestones {
  margin-bottom: 4rem;
}

.page-about__milestone-figure {
  margin: 0 0 0.75rem;
  border: 1px solid #DCE3EC;
  background: #FFFFFF;
  padding: 0.5rem;
}

.page-about__milestone-figure img,
.page-about__cap-figure img,
.page-about__compliance-shield img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-about__milestone-figure figcaption,
.page-about__cap-figure figcaption {
  padding: 0.625rem 0.25rem 0.25rem;
  font-size: 0.8125rem;
  color: #6B7280;
}

.page-about__timeline-rule {
  display: block;
  width: min(100%, 640px);
  height: auto;
  margin: 1rem auto 1.5rem;
}

.page-about__timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  top: 0.5rem;
  left: 0.375rem;
  bottom: 0.75rem;
  width: 2px;
  background: linear-gradient(to bottom, #FF6B00 0%, #DCE3EC 100%);
}

.page-about__tl-item {
  position: relative;
  padding-left: 1.75rem;
  padding-bottom: 1.5rem;
}

.page-about__tl-item:last-child {
  padding-bottom: 0;
}

.page-about__tl-dot {
  position: absolute;
  top: 0.45rem;
  left: 0.125rem;
  width: 0.875rem;
  height: 0.875rem;
  border-radius: 50%;
  background: #FF6B00;
  border: 3px solid #F5F7FA;
  box-shadow: 0 0 0 1px rgba(255, 107, 0, 0.8);
}

.page-about__tl-card {
  background: #FFFFFF;
  border: 1px solid #DCE3EC;
  padding: 1.25rem;
  box-shadow: 0 8px 24px rgba(11, 26, 60, 0.06);
  transition: transform 180ms cubic-bezier(0.4, 0, 0.2, 1), border-color 180ms cubic-bezier(0.4, 0, 0.2, 1);
}

.page-about__tl-card:hover {
  transform: translateY(-2px);
  border-color: #FF6B00;
}

.page-about__tl-card .page-about__tl-meta {
  margin: 0 0 0.375rem;
  font-family: "DIN Alternate", "Roboto Mono", monospace;
  font-size: 0.8125rem;
  font-weight: 700;
  color: #FF6B00;
}

.page-about__tl-card h3 {
  margin: 0 0 0.75rem;
  font-family: "Barlow Condensed", "Noto Sans SC", sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: #0B1A3C;
}

.page-about__tl-card p:not(.page-about__tl-meta) {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: #6B7280;
}

/* ----- 数据能力与覆盖范围 ----- */
.page-about__capability {
  margin-bottom: 4rem;
}

.page-about__cap-board {
  display: grid;
  gap: 1.25rem;
}

.page-about__cap-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

.page-about__cap-card {
  position: relative;
  padding: 1.5rem 1.25rem;
  border: 1px solid #DCE3EC;
  background: #FFFFFF;
  overflow: hidden;
}

.page-about__cap-card--large {
  background:
    radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(145deg, #0B1A3C, #122A5A);
  background-size: 24px 24px, auto;
  color: #FFFFFF;
}

.page-about__cap-card--large h3 {
  color: #FFFFFF;
}

.page-about__cap-card--large p {
  color: rgba(255, 255, 255, 0.72);
}

.page-about__cap-card--standard {
  background:
    radial-gradient(#DCE3EC 1px, transparent 1px),
    #FFFFFF;
  background-size: 16px 16px, auto;
}

.page-about__cap-card--accent {
  background: linear-gradient(135deg, #FF6B00 0%, #FFB37A 100%);
  color: #0B1A3C;
  border-color: #FF6B00;
}

.page-about__cap-card--accent h3,
.page-about__cap-card--accent p {
  color: #0B1A3C;
}

.page-about__cap-num {
  display: block;
  margin-bottom: 0.75rem;
  font-family: "DIN Alternate", "Roboto Mono", monospace;
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1;
  color: #FF6B00;
  font-variant-numeric: tabular-nums;
}

.page-about__cap-card--large .page-about__cap-num {
  color: #FF6B00;
  font-size: 3rem;
  margin-bottom: 1.5rem;
}

.page-about__cap-card--accent .page-about__cap-num {
  color: #0B1A3C;
}

.page-about__cap-card h3 {
  margin: 0 0 0.5rem;
  font-family: "Barlow Condensed", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 1.25rem;
  line-height: 1.3;
  color: #0B1A3C;
}

.page-about__cap-card p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: #6B7280;
}

.page-about__cap-side {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.page-about__cap-figure {
  margin: 0;
  background: #FFFFFF;
  border: 1px solid #DCE3EC;
  padding: 0.5rem;
}

.page-about__cap-note {
  margin: 0;
  padding: 1rem 1.25rem;
  border-left: 3px solid #FF6B00;
  background: rgba(255, 179, 122, 0.14);
  font-size: 0.875rem;
  line-height: 1.7;
  color: #122A5A;
}

/* ----- 内容运营与合规承诺 ----- */
.page-about__compliance {
  margin-bottom: 4rem;
}

.page-about__compliance-panel {
  position: relative;
  display: grid;
  gap: 1.5rem;
  align-items: start;
  background:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(135deg, #0B1A3C 0%, #122A5A 100%);
  background-size: 32px 32px, 32px 32px, auto;
  color: #FFFFFF;
  padding: 2rem 1.5rem;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-about__compliance-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 64px;
  height: 4px;
  background: #FF6B00;
}

.page-about__compliance-shield {
  margin: 0;
  max-width: 180px;
  width: 100%;
}

.page-about__compliance-shield img {
  width: 100%;
  height: auto;
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.page-about__compliance-copy .page-about__compliance-lead {
  margin: 0 0 1rem;
  color: rgba(255, 255, 255, 0.88);
  font-size: 1rem;
  line-height: 1.75;
}

.page-about__compliance-list {
  margin: 0 0 1.25rem;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.page-about__compliance-list li {
  position: relative;
  padding: 0.875rem 1rem 0.875rem 1rem;
  background: rgba(255, 255, 255, 0.06);
  border-left: 3px solid #FF6B00;
  font-size: 0.875rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.86);
}

.page-about__compliance-list li strong {
  color: #FFFFFF;
  font-weight: 600;
}

.page-about__compliance-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.page-about__compliance-links a {
  color: #FFB37A;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 179, 122, 0.4);
  transition: color 180ms cubic-bezier(0.4, 0, 0.2, 1), border-color 180ms cubic-bezier(0.4, 0, 0.2, 1);
}

.page-about__compliance-links a:hover {
  color: #FF6B00;
  border-color: #FF6B00;
}

/* ----- 下一步导航 ----- */
.page-about__next {
  border-top: 1px solid #DCE3EC;
  padding-top: 1.75rem;
}

.page-about__next-label {
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  color: #6B7280;
}

.page-about__next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about__next .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  font-family: "Barlow Condensed", "Noto Sans SC", sans-serif;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 180ms cubic-bezier(0.4, 0, 0.2, 1), box-shadow 180ms cubic-bezier(0.4, 0, 0.2, 1), border-color 180ms cubic-bezier(0.4, 0, 0.2, 1);
}

.page-about__next .btn-primary {
  background: #FF6B00;
  color: #0B1A3C;
  border-color: #FF6B00;
}

.page-about__next .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 107, 0, 0.32);
}

.page-about__next .btn-outline {
  background: transparent;
  color: #0B1A3C;
  border-color: #DCE3EC;
}

.page-about__next .btn-outline:hover {
  border-color: #FF6B00;
  color: #FF6B00;
  transform: translateY(-2px);
}

/* ----- 媒体查询：平板及以上 ----- */
@media (min-width: 640px) {
  .page-about__container {
    padding: 2rem 1.5rem 5rem;
  }

  .page-about__intro-copy h1 {
    font-size: 2.5rem;
  }

  .page-about__cap-card {
    padding: 1.75rem 1.5rem;
  }

  .page-about__compliance-panel {
    padding: 2.5rem 2rem;
  }
}

@media (min-width: 768px) {
  .page-about__intro {
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
  }

  .page-about__cap-grid {
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 150px;
    gap: 1rem;
  }

  .page-about__cap-card--large {
    grid-column: 1 / 3;
    grid-row: 1 / 3;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
  }

  .page-about__cap-card--wide {
    grid-column: 3 / 5;
    grid-row: 1 / 2;
  }

  .page-about__cap-card--standard {
    grid-column: 3 / 5;
    grid-row: 2 / 3;
  }

  .page-about__cap-card--accent {
    grid-column: 1 / 5;
    grid-row: 3 / 4;
  }

  .page-about__compliance-panel {
    grid-template-columns: auto 1fr;
    gap: 2rem;
  }

  .page-about__compliance-shield {
    max-width: 200px;
  }
}

@media (min-width: 992px) {
  .page-about__cap-board {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    gap: 1.5rem;
  }

  .page-about__cap-side {
    gap: 1.25rem;
  }

  .page-about__cap-figure {
    flex: 1;
  }
}

@media (min-width: 1200px) {
  .page-about__container {
    padding-top: 2.5rem;
  }

  .page-about__intro-copy h1 {
    font-size: 2.75rem;
  }

  .page-about__section-head h2 {
    font-size: 2rem;
  }

  .page-about__timeline-rule {
    margin-bottom: 2rem;
  }

  .page-about__timeline {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 1.25rem;
  }

  .page-about__timeline::before {
    top: 0.45rem;
    left: 4px;
    width: calc(100% - 8px);
    height: 2px;
    background: linear-gradient(to right, #FF6B00 0%, #DCE3EC 90%);
  }

  .page-about__tl-item {
    padding: 2.25rem 0 0 0;
    padding-bottom: 0;
  }

  .page-about__tl-dot {
    top: 0.4rem;
    left: 0.125rem;
  }

  .page-about__tl-card {
    height: 100%;
  }

  .page-about__cap-card--large .page-about__cap-num {
    font-size: 3.5rem;
  }

  .page-about__cap-card--accent {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .page-about__compliance-panel {
    padding: 3rem 2.5rem;
  }
}