.page-about {
  --about-content: var(--content-width);
  --about-gold: var(--color-gold);
  --about-gold-bright: var(--color-gold-bright);
  --about-gold-deep: var(--color-gold-deep);
  --about-primary: var(--color-primary);
  --about-red: var(--color-red);
  --about-light-gold: var(--color-light-gold);
  --about-silver: var(--color-silver);
  --about-mid: var(--color-mid);
  --about-blue: var(--color-blue);
  --about-dark: var(--color-dark);
  --about-font-heading: var(--font-heading);
  --about-font-body: var(--font-body);
  --about-font-accent: var(--font-accent);
  --about-radius-lg: var(--radius-lg);
  --about-radius-md: var(--radius-md);
  --about-radius-pill: var(--radius-pill);
  --about-shadow-md: var(--shadow-md);
  --about-shadow-lg: var(--shadow-lg);
  --about-shadow-gold: var(--shadow-gold);
  --about-ease: var(--ease);
  --about-dur: var(--dur-med);
  --about-grid-line: rgba(244, 180, 0, 0.14);
  background: var(--about-primary);
  color: #ffffff;
  overflow-x: clip;
  font-family: var(--about-font-body);
}
.page-about .about-container {
  width: min(100% - 2rem, var(--about-content));
  margin-inline: auto;
  position: relative;
}
.page-about .about-section-tag {
  display: inline-block;
  margin-bottom: var(--space-2);
}
.page-about .about-section-head {
  margin-bottom: var(--space-4);
}
.page-about .about-section-head h2 {
  font-family: var(--about-font-heading);
  font-size: clamp(1.75rem, 4.5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-2);
}
.page-about .about-section-head p {
  color: var(--about-mid);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 560px;
  margin: 0;
}
.page-about h2:focus-visible {
  outline: 2px solid var(--about-gold);
  outline-offset: 4px;
  border-radius: 4px;
}

/* ===== 01 首屏分屏 ===== */
.page-about .about-hero {
  position: relative;
  padding: var(--space-4) 0 var(--space-6);
  background:
    radial-gradient(ellipse at 82% 18%, rgba(244, 180, 0, 0.18), transparent 52%),
    radial-gradient(ellipse at 8% 76%, rgba(27, 168, 212, 0.16), transparent 46%),
    linear-gradient(135deg, #0B1D3A 0%, #102A5C 62%, #0A1830 100%);
  overflow: hidden;
}
.page-about .about-hero-grid {
  display: grid;
  gap: var(--space-4);
  align-items: center;
}
.page-about .about-hero-copy {
  position: relative;
  z-index: 2;
}
.page-about .about-hero-copy .breadcrumb-list {
  background: rgba(11, 29, 58, 0.5);
  border: 1px solid var(--about-grid-line);
  border-radius: var(--radius-pill);
  padding: 0.5rem 1rem;
  width: fit-content;
  margin-bottom: var(--space-3);
}
.page-about .about-hero-copy .breadcrumb-item a {
  color: var(--about-gold-bright);
  text-decoration: none;
}
.page-about .about-hero-copy .breadcrumb-item a:hover {
  color: var(--about-gold);
  text-decoration: underline;
}
.page-about .about-eyebrow {
  display: inline-block;
  font-family: var(--about-font-accent);
  font-size: var(--fs-small);
  letter-spacing: 0.35em;
  color: var(--about-gold);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
  border-left: 2px solid var(--about-red);
  padding-left: 0.75rem;
}
.page-about .about-hero h1 {
  font-family: var(--about-font-heading);
  font-size: clamp(2.1rem, 6vw, 4.25rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin: 0 0 var(--space-3);
  max-width: 640px;
}
.page-about .about-h1-accent {
  display: block;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--about-gold);
  background: linear-gradient(90deg, var(--about-gold-bright), var(--about-gold));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.page-about .about-hero-lead {
  font-size: 1.05rem;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.82);
  max-width: 540px;
  margin: 0 0 var(--space-4);
}
.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.page-about .about-hero-actions .btn-outline {
  border-color: var(--about-gold);
  color: var(--about-gold);
  background: transparent;
}
.page-about .about-hero-actions .btn-outline:hover {
  background: rgba(244, 180, 0, 0.12);
}
.page-about .about-hero-visual {
  position: relative;
  z-index: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--about-shadow-lg);
  border: 1px solid rgba(244, 180, 0, 0.35);
}
.page-about .about-hero-img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 460px;
  object-fit: cover;
}
.page-about .about-hero-overlay {
  position: absolute;
  left: var(--space-2);
  bottom: var(--space-2);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  background: rgba(11, 29, 58, 0.62);
  border: 1px solid rgba(244, 180, 0, 0.42);
  min-width: 150px;
}
.page-about .about-hero-stat {
  display: block;
  font-family: var(--about-font-heading);
  font-size: 2.25rem;
  font-weight: 900;
  color: var(--about-gold);
  line-height: 1;
}
.page-about .stat-unit {
  font-size: 1rem;
  font-weight: 700;
  margin-left: 0.2rem;
  color: var(--about-gold-bright);
}
.page-about .about-hero-stat-label {
  display: block;
  font-size: var(--fs-small);
  color: rgba(255, 255, 255, 0.8);
  margin-top: 0.35rem;
}
.page-about .about-hero-chapter {
  position: absolute;
  right: -16px;
  bottom: -32px;
  font-family: var(--about-font-heading);
  font-size: 10rem;
  font-weight: 900;
  line-height: 0.8;
  color: transparent;
  -webkit-text-stroke: 2px rgba(244, 180, 0, 0.28);
  opacity: 0.5;
  pointer-events: none;
  z-index: 0;
}
.page-about .about-hero-note {
  position: absolute;
  right: var(--space-2);
  top: var(--space-4);
  z-index: 3;
  color: rgba(255, 255, 255, 0.52);
  font-family: var(--about-font-accent);
  font-size: var(--fs-tiny);
  letter-spacing: 0.18em;
  text-align: center;
}

/* ===== 02 品牌起源 ===== */
.page-about .about-origin {
  background: linear-gradient(180deg, #EDF2F8 0%, #F7F5EF 100%);
  color: var(--about-dark);
  position: relative;
}
.page-about .about-origin-grid {
  display: grid;
  gap: var(--space-4);
  padding-block: var(--space-5);
}
.page-about .about-origin-main h2 {
  font-family: var(--about-font-heading);
  font-size: clamp(1.7rem, 4vw, 2.75rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-3);
  color: var(--about-primary);
}
.page-about .about-origin-main p {
  font-size: 1rem;
  line-height: 1.9;
  color: #3d4554;
  margin: 0 0 var(--space-2);
}
.page-about .about-origin-main p:last-child {
  margin-bottom: 0;
}
.page-about .about-origin-aside {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(244, 180, 0, 0.35);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.page-about .about-origin-aside .vertical-note {
  color: var(--about-gold-deep);
}
.page-about .about-origin-fact {
  border-top: 1px solid var(--about-silver);
  padding-top: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.page-about .fact-num {
  font-family: var(--about-font-heading);
  font-size: 2.1rem;
  font-weight: 900;
  color: var(--about-primary);
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.page-about .fact-label {
  font-size: var(--fs-small);
  color: var(--about-mid);
}

/* ===== 03 发展里程碑 ===== */
.page-about .about-timeline-section {
  background:
    linear-gradient(rgba(244, 180, 0, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244, 180, 0, 0.035) 1px, transparent 1px),
    var(--about-primary);
  background-size: 48px 48px;
  padding-block: var(--space-5);
  position: relative;
}
.page-about .about-timeline-section .about-section-head h2 {
  color: #ffffff;
}
.page-about .about-timeline-section .about-section-head p {
  color: rgba(255, 255, 255, 0.62);
}
.page-about .about-timeline-wrap {
  display: grid;
  gap: var(--space-4);
}
.page-about .about-timeline {
  position: relative;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 20px;
  bottom: 20px;
  width: 2px;
  background: linear-gradient(180deg, var(--about-gold) 0%, var(--about-blue) 55%, var(--about-red) 100%);
  border-radius: var(--radius-pill);
}
.page-about .about-milestone {
  position: relative;
  margin-bottom: var(--space-3);
}
.page-about .about-milestone:last-child {
  margin-bottom: 0;
}
.page-about .about-milestone::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 28px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--about-gold);
  border: 2px solid var(--about-primary);
  box-shadow: 0 0 0 4px rgba(244, 180, 0, 0.28);
  z-index: 2;
}
.page-about .about-milestone summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr) 34px;
  gap: var(--space-2);
  align-items: start;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-2);
  margin-left: 30px;
  transition: background var(--about-dur) var(--about-ease), border-color var(--about-dur) var(--about-ease), box-shadow var(--about-dur) var(--about-ease);
}
.page-about .about-milestone summary::-webkit-details-marker {
  display: none;
}
.page-about .about-milestone summary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(244, 180, 0, 0.55);
  box-shadow: var(--about-shadow-md);
}
.page-about .milestone-year {
  font-family: var(--about-font-heading);
  font-size: 1.9rem;
  font-weight: 900;
  color: var(--about-gold);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.page-about .milestone-content h3 {
  font-family: var(--about-font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 0.5rem;
  line-height: 1.4;
}
.page-about .milestone-excerpt {
  font-size: var(--fs-small);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.66);
  margin: 0;
}
.page-about .milestone-toggle {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid var(--about-gold);
  color: var(--about-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 400;
  line-height: 1;
  transition: transform var(--about-dur) var(--about-ease), background var(--about-dur) var(--about-ease), color var(--about-dur) var(--about-ease);
}
.page-about .about-milestone[open] .milestone-toggle {
  transform: rotate(45deg);
  background: var(--about-gold);
  color: var(--about-primary);
}
.page-about .about-milestone .milestone-more {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  margin-left: 30px;
  transition: grid-template-rows var(--about-dur) var(--about-ease), opacity var(--about-dur) var(--about-ease), padding var(--about-dur) var(--about-ease);
}
.page-about .about-milestone .milestone-more > p {
  overflow: hidden;
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.72);
}
.page-about .about-milestone[open] .milestone-more {
  grid-template-rows: 1fr;
  opacity: 1;
  padding-top: var(--space-2);
}
.page-about .about-milestone[open] .milestone-more > p {
  padding-bottom: 0.25rem;
}
.page-about .about-timeline-side {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.page-about .about-timeline-img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(244, 180, 0, 0.3);
  box-shadow: var(--about-shadow-md);
}
.page-about .about-timeline-side-note {
  background: rgba(11, 29, 58, 0.6);
  border: 1px solid rgba(244, 180, 0, 0.28);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.page-about .about-timeline-side-note .vertical-note {
  color: var(--about-gold);
  font-size: var(--fs-tiny);
  letter-spacing: 0.18em;
}
.page-about .about-timeline-side-note p {
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.78);
}

/* ===== 04 服务理念 ===== */
.page-about .about-values {
  background: linear-gradient(135deg, #F7E7A6 0%, #F4B400 45%, #E8A400 100%);
  color: var(--about-primary);
  padding-block: var(--space-5);
  position: relative;
  overflow: hidden;
}
.page-about .about-values::before {
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
  pointer-events: none;
}
.page-about .about-values-head {
  position: relative;
  z-index: 1;
  margin-bottom: var(--space-4);
}
.page-about .about-values-head h2 {
  font-family: var(--about-font-heading);
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-2);
  color: var(--about-primary);
}
.page-about .about-values-head p {
  color: rgba(11, 29, 58, 0.76);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 560px;
  margin: 0;
}
.page-about .about-values-grid {
  display: grid;
  gap: var(--space-3);
  position: relative;
  z-index: 1;
}
.page-about .about-value-card {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--about-shadow-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform var(--about-dur) var(--about-ease), box-shadow var(--about-dur) var(--about-ease);
}
.page-about .about-value-card:hover {
  transform: translateY(-6px) rotate(0.4deg);
  box-shadow: var(--about-shadow-lg);
}
.page-about .value-no {
  font-family: var(--about-font-accent);
  font-size: var(--fs-tiny);
  letter-spacing: 0.25em;
  color: var(--about-gold-deep);
  display: block;
  margin-bottom: var(--space-1);
}
.page-about .about-value-card h3 {
  font-family: var(--about-font-heading);
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--about-primary);
  margin: 0 0 var(--space-1);
}
.page-about .about-value-card p {
  font-size: var(--fs-small);
  line-height: 1.8;
  color: rgba(11, 29, 58, 0.82);
  margin: 0;
}
.page-about .about-values-visual {
  margin-top: var(--space-4);
  position: relative;
  z-index: 1;
  text-align: center;
}
.page-about .about-values-visual img {
  display: block;
  width: 100%;
  max-width: 600px;
  height: auto;
  max-height: 380px;
  object-fit: cover;
  margin-inline: auto;
  border-radius: var(--radius-lg);
  border: 4px solid rgba(255, 255, 255, 0.7);
  box-shadow: var(--about-shadow-gold);
}

/* ===== 05 荣誉与认可 ===== */
.page-about .about-honors {
  background:
    radial-gradient(ellipse at 20% 80%, rgba(27, 168, 212, 0.13), transparent 50%),
    radial-gradient(ellipse at 90% 20%, rgba(244, 180, 0, 0.14), transparent 44%),
    var(--about-primary);
  padding-block: var(--space-5);
}
.page-about .about-honors .about-section-head h2 {
  color: #ffffff;
}
.page-about .about-honors .about-section-head p {
  color: rgba(255, 255, 255, 0.62);
}
.page-about .about-honors-grid {
  display: grid;
  gap: var(--space-3);
  position: relative;
  z-index: 1;
}
.page-about .about-honor-card {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(244, 180, 0, 0.22);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-3);
  text-align: center;
  transition: border-color var(--about-dur) var(--about-ease), transform var(--about-dur) var(--about-ease), background var(--about-dur) var(--about-ease);
}
.page-about .about-honor-card:hover {
  border-color: var(--about-gold);
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-6px);
}
.page-about .honor-medal {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: conic-gradient(from 210deg, var(--about-gold-bright), var(--about-gold), var(--about-gold-deep), var(--about-gold-bright));
  box-shadow: var(--about-shadow-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-3);
  position: relative;
}
.page-about .honor-medal::before {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 1px dashed rgba(244, 180, 0, 0.5);
  animation: about-medal-spin 14s linear infinite;
}
@keyframes about-medal-spin {
  to {
    transform: rotate(360deg);
  }
}
.page-about .honor-medal-icon {
  font-size: 2.1rem;
  color: var(--about-primary);
  line-height: 1;
}
.page-about .about-honor-card h3 {
  font-family: var(--about-font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 0.4rem;
  line-height: 1.4;
}
.page-about .about-honor-card p {
  font-size: var(--fs-small);
  color: rgba(255, 255, 255, 0.62);
  margin: 0;
  line-height: 1.6;
}
.page-about .about-honor-note {
  margin-top: var(--space-4);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(244, 180, 0, 0.3);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-2);
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}
.page-about .about-honor-note .vertical-note {
  color: var(--about-gold);
  font-size: var(--fs-tiny);
  letter-spacing: 0.16em;
}
.page-about .about-honor-note p {
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.84);
  font-style: italic;
}

/* ===== 06 底部行动区 ===== */
.page-about .about-cta {
  background: linear-gradient(180deg, #09162E 0%, #0B1D3A 100%);
  text-align: center;
  padding-block: var(--space-5);
  position: relative;
  overflow: hidden;
}
.page-about .about-cta::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -80%;
  transform: translateX(-50%);
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(244, 180, 0, 0.24), transparent 70%);
  pointer-events: none;
}
.page-about .about-cta h2 {
  position: relative;
  font-family: var(--about-font-heading);
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  line-height: 1.25;
  color: #ffffff;
  margin: 0 0 var(--space-4);
  max-width: 640px;
  margin-inline: auto;
}
.page-about .about-cta-links {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
}
.page-about .about-cta-links .btn-primary {
  background: var(--about-gold);
  color: var(--about-primary);
}
.page-about .about-cta-links .btn-outline {
  border-color: rgba(244, 180, 0, 0.6);
  color: var(--about-gold);
}
.page-about .about-cta-links .btn-outline:hover {
  background: rgba(244, 180, 0, 0.12);
}

/* ===== 响应式：平板 ===== */
@media (min-width: 640px) {
  .page-about .about-hero-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-about .about-hero-chapter {
    font-size: 14rem;
    right: -10px;
    bottom: -50px;
  }
  .page-about .about-values-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .about-honors-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .about-honor-note {
    max-width: 720px;
    margin-inline: auto;
    padding: var(--space-3) var(--space-4);
  }
  .page-about .about-milestone summary {
    grid-template-columns: 96px minmax(0, 1fr) 34px;
  }
}

/* ===== 响应式：桌面 ===== */
@media (min-width: 1024px) {
  .page-about .about-hero {
    min-height: 620px;
    display: flex;
    align-items: center;
    padding-block: var(--space-6);
  }
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: var(--space-5);
  }
  .page-about .about-hero-lead {
    font-size: 1.12rem;
  }
  .page-about .about-hero-img {
    max-height: 560px;
  }
  .page-about .about-origin-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.5fr);
    gap: var(--space-5);
  }
  .page-about .about-origin-main p {
    font-size: 1.02rem;
  }
  .page-about .about-origin-aside {
    padding: var(--space-5) var(--space-4);
  }
  .page-about .about-timeline-wrap {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: var(--space-5);
  }
  .page-about .about-timeline {
    padding-right: var(--space-2);
  }
  .page-about .about-timeline::before {
    left: 15px;
  }
  .page-about .about-milestone::before {
    left: 9px;
  }
  .page-about .about-milestone summary {
    grid-template-columns: 168px minmax(0, 1fr) 40px;
    padding: var(--space-4);
    margin-left: 36px;
  }
  .page-about .about-milestone .milestone-more {
    margin-left: 36px;
  }
  .page-about .milestone-year {
    font-size: 3.3rem;
  }
  .page-about .milestone-content h3 {
    font-size: 1.2rem;
  }
  .page-about .about-timeline-side-note {
    flex-direction: column;
    align-items: flex-start;
  }
  .page-about .about-timeline-img {
    max-height: 340px;
  }
  .page-about .about-honor-card {
    padding: var(--space-5) var(--space-4);
  }
  .page-about .about-cta-links {
    flex-wrap: nowrap;
    justify-content: center;
  }
  .page-about .about-value-card:hover {
    transform: translateY(-8px) rotate(0.5deg);
  }
}

/* ===== 横屏安全 ===== */
@media screen and (min-width: 768px) and (max-height: 520px) {
  .page-about .about-hero {
    min-height: auto;
  }
}

/* ===== 无障碍：减少动效 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-about .honor-medal::before {
    animation: none;
  }
  .page-about .about-value-card,
  .page-about .about-honor-card {
    transition: none;
  }
  .page-about .about-milestone .milestone-more {
    transition: none;
  }
}