.page-about {
  --about-hero-grad: linear-gradient(135deg, #1B4D89 0%, #3A2D78 100%);
  --about-line-gold: rgba(212, 175, 55, 0.45);
  color: var(--deep-gray);
  background: var(--snow-white);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
}

.page-about .eyebrow {
  margin: 0 0 0.75rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.8125rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--warm-orange);
}

.page-about .page-title {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(2.5rem, 8vw, 4.25rem);
  line-height: 1.1;
  margin: 0 0 1.25rem;
  color: #fff;
  text-shadow: 0 2px 30px rgba(24, 51, 90, 0.3);
}

.page-about .page-intro {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: rgba(248, 250, 252, 0.88);
  max-width: 34em;
  margin: 0;
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: var(--about-hero-grad);
  padding: 4.5rem 0 3.25rem;
  color: #fff;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 85% 12%, rgba(107, 164, 184, 0.35) 0, transparent 28%),
    radial-gradient(circle at 12% 80%, rgba(212, 175, 55, 0.18) 0, transparent 24%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -5rem;
  bottom: -4rem;
  width: 26rem;
  height: 18rem;
  pointer-events: none;
  opacity: 0.24;
  background: linear-gradient(155deg, transparent 0%, transparent 42%, #7A2E3D 42.5%, #7A2E3D 58%, transparent 58.5%, transparent 72%, #0F4C5C 72.5%, #0F4C5C 100%);
  clip-path: polygon(20% 0, 100% 0, 100% 100%, 0 100%);
}

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

.page-about .about-hero__grid {
  display: grid;
  gap: 2.5rem;
  margin-top: 3.25rem;
}

.page-about .about-hero__index {
  background: rgba(248, 250, 252, 0.08);
  border: 1px solid rgba(248, 250, 252, 0.14);
  backdrop-filter: blur(4px);
  border-radius: 1.5rem;
  padding: 1.75rem 1.75rem 1.5rem;
  position: relative;
}

.page-about .about-hero__index::before {
  content: "";
  position: absolute;
  top: 0;
  left: 1.75rem;
  width: 2.5rem;
  height: 3px;
  background: var(--warm-orange);
  border-radius: 2px;
}

.page-about .about-hero__index-label {
  margin: 0 0 1rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(248, 250, 252, 0.65);
}

.page-about .about-hero__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}

.page-about .about-hero__item {
  border-bottom: 1px dashed rgba(248, 250, 252, 0.15);
}

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

.page-about .about-hero__item a {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.7rem 0.25rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
  text-decoration: none;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.page-about .about-hero__item a:hover,
.page-about .about-hero__item a:focus-visible {
  color: var(--warm-orange);
  padding-left: 0.5rem;
  outline: none;
}

.page-about .about-hero__num {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 0.8125rem;
  color: var(--warm-orange);
  letter-spacing: 0.06em;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 3rem 0 0;
  padding: 1.5rem 0 0;
  border-top: 1px solid rgba(248, 250, 252, 0.18);
}

.page-about .about-hero__stat {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.page-about .about-hero__stat-num {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1;
  color: #fff;
  margin: 0;
}

.page-about .about-hero__stat-label {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9375rem;
  color: rgba(248, 250, 252, 0.72);
}

/* 起源 */
.page-about .about-origin {
  background: var(--snow-white);
  padding: 4rem 0 3.75rem;
}

.page-about .about-origin h2,
.page-about .about-journey h2,
.page-about .about-philosophy h2,
.page-about .about-credentials h2,
.page-about .about-cta h2 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  line-height: 1.2;
  margin: 0 0 1.5rem;
  color: var(--deep-gray);
}

.page-about .about-origin__layout {
  display: grid;
  gap: 2.25rem;
  align-items: start;
  margin-top: 0.75rem;
}

.page-about .about-origin__lead {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--plateau-blue);
  margin: 0 0 1.25rem;
}

.page-about .about-origin__copy p {
  margin: 0 0 1.15rem;
  font-size: 1rem;
}

.page-about .about-origin__quote {
  margin: 1.75rem 0;
  padding: 1.5rem 1.5rem 1.4rem;
  background: linear-gradient(120deg, rgba(122, 46, 61, 0.08), rgba(122, 46, 61, 0.03));
  border-left: 4px solid var(--wine-red);
  border-radius: 0 1.25rem 1.25rem 0;
  position: relative;
  overflow: hidden;
}

.page-about .about-origin__quote::before {
  content: "“";
  position: absolute;
  right: 1.25rem;
  bottom: -1.25rem;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 6rem;
  line-height: 1;
  color: rgba(122, 46, 61, 0.12);
}

.page-about .about-origin__quote p {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--wine-red);
  margin: 0 0 0.6rem;
}

.page-about .about-origin__quote cite {
  font-style: normal;
  font-size: 0.875rem;
  color: rgba(45, 55, 72, 0.6);
  letter-spacing: 0.04em;
}

.page-about .about-origin__media {
  position: relative;
}

.page-about .about-origin__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: 1.5rem;
  object-fit: cover;
  box-shadow: 0 1.5rem 3rem rgba(27, 77, 137, 0.14);
}

.page-about .about-origin__caption {
  margin: 0.75rem 0 0;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.8125rem;
  color: rgba(45, 55, 72, 0.62);
  line-height: 1.5;
}

.page-about .about-origin__media::after {
  content: "";
  position: absolute;
  z-index: -1;
  width: 6rem;
  height: 6rem;
  right: -1.25rem;
  top: -1.25rem;
  background: var(--warm-orange);
  border-radius: 1.25rem;
  transform: rotate(8deg);
  opacity: 0.28;
}

/* 时间线 */
.page-about .about-journey {
  background: var(--deep-teal);
  padding: 4rem 0 3.75rem;
  color: rgba(248, 250, 252, 0.88);
  position: relative;
  overflow: hidden;
}

.page-about .about-journey::before {
  content: "";
  position: absolute;
  top: -8rem;
  left: -4rem;
  width: 22rem;
  height: 22rem;
  border-radius: 50%;
  background: rgba(27, 77, 137, 0.3);
  pointer-events: none;
}

.page-about .about-journey h2 {
  color: #fff;
}

.page-about .about-journey__head {
  display: grid;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.page-about .about-journey__summary {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 1rem;
  color: rgba(248, 250, 252, 0.7);
  max-width: 28em;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0.25rem 0 0;
  position: relative;
  max-width: 68rem;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 0.5rem;
  bottom: 0.5rem;
  left: 1.75rem;
  width: 2px;
  background: linear-gradient(180deg, var(--warm-orange) 0%, rgba(212, 175, 55, 0.7) 50%, rgba(107, 164, 184, 0.5) 100%);
}

.page-about .about-timeline__item {
  position: relative;
  margin: 0 0 2.25rem;
  padding: 0 0 0 4.375rem;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 1.4375rem;
  top: 0.4375rem;
  width: 0.6875rem;
  height: 0.6875rem;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 0.3125rem rgba(212, 175, 55, 0.2);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.page-about .about-timeline__item:hover::before,
.page-about .about-timeline__item:focus-within::before {
  transform: scale(1.3);
  box-shadow: 0 0 0 0.5rem rgba(212, 175, 55, 0.3);
}

.page-about .about-timeline__year {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 2rem;
  line-height: 1;
  color: var(--warm-orange);
  margin-bottom: 0.4rem;
  letter-spacing: 0.02em;
  transition: transform var(--transition-fast);
}

.page-about .about-timeline__item:hover .about-timeline__year {
  transform: translateX(0.25rem);
}

.page-about .about-timeline__content h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  line-height: 1.4;
  color: #fff;
  margin: 0 0 0.5rem;
}

.page-about .about-timeline__content p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: rgba(248, 250, 252, 0.78);
  max-width: 42em;
}

.page-about .about-journey__media {
  margin-top: 2rem;
}

.page-about .about-journey__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: 1.5rem;
  object-fit: cover;
  box-shadow: 0 1.75rem 3.5rem rgba(6, 26, 34, 0.5);
}

/* 服务理念 */
.page-about .about-philosophy {
  background: var(--snow-white);
  padding: 4rem 0 3.75rem;
}

.page-about .about-philosophy__head {
  max-width: 42rem;
  margin-bottom: 2.5rem;
}

.page-about .about-philosophy__lead {
  margin: 0;
  font-size: 1rem;
  color: rgba(45, 55, 72, 0.74);
}

.page-about .about-philosophy__grid {
  display: grid;
  gap: 1.25rem;
  align-items: stretch;
}

.page-about .about-philosophy__card {
  position: relative;
  background: #fff;
  border: 1px solid var(--fog-gray);
  border-radius: 1.5rem;
  padding: 1.875rem 1.75rem 1.75rem;
  box-shadow: 0 0.5rem 1.5rem rgba(27, 77, 137, 0.05);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-fast);
}

.page-about .about-philosophy__card:hover {
  transform: translateY(-0.375rem);
  box-shadow: 0 1.25rem 2.5rem rgba(27, 77, 137, 0.1);
}

.page-about .about-philosophy__card--security {
  border-top: 4px solid var(--deep-teal);
}

.page-about .about-philosophy__card--convenience {
  border-top: 4px solid var(--warm-orange);
}

.page-about .about-philosophy__card--local {
  border-top: 4px solid var(--wine-red);
}

.page-about .about-philosophy__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  margin-bottom: 1.25rem;
  background: rgba(107, 164, 184, 0.14);
  color: var(--plateau-blue);
}

.page-about .about-philosophy__icon svg {
  width: 1.5rem;
  height: 1.5rem;
}

.page-about .about-philosophy__card--convenience .about-philosophy__icon {
  background: rgba(255, 140, 66, 0.15);
  color: #c26d2f;
}

.page-about .about-philosophy__card--local .about-philosophy__icon {
  background: rgba(122, 46, 61, 0.1);
  color: var(--wine-red);
}

.page-about .about-philosophy__card h3 {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.375rem;
  margin: 0 0 0.75rem;
  color: var(--deep-gray);
}

.page-about .about-philosophy__card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: rgba(45, 55, 72, 0.76);
}

.page-about .about-philosophy__media {
  display: grid;
  gap: 1.25rem;
  background: #fff;
  border: 1px solid var(--fog-gray);
  border-radius: 1.5rem;
  padding: 1.25rem;
  box-shadow: 0 0.5rem 1.5rem rgba(27, 77, 137, 0.05);
}

.page-about .about-philosophy__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: 1rem;
  object-fit: cover;
}

.page-about .about-philosophy__note {
  padding: 0 0.25rem 0.25rem;
}

.page-about .about-philosophy__note p {
  margin: 0 0 0.75rem;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(45, 55, 72, 0.72);
}

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

/* 资质荣誉 */
.page-about .about-credentials {
  background: linear-gradient(150deg, #3A2D78 0%, #1B4D89 100%);
  color: rgba(248, 250, 252, 0.85);
  padding: 4.25rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.page-about .about-credentials::before {
  content: "";
  position: absolute;
  top: 2rem;
  right: -6rem;
  width: 18rem;
  height: 18rem;
  border-radius: 50%;
  background: rgba(212, 175, 55, 0.08);
  pointer-events: none;
}

.page-about .about-credentials h2 {
  color: #fff;
}

.page-about .about-credentials__head {
  max-width: 42rem;
  margin-bottom: 2.5rem;
}

.page-about .about-credentials__head p:last-child {
  margin: 0;
  color: rgba(248, 250, 252, 0.75);
}

.page-about .about-credentials__grid {
  display: grid;
  gap: 1.25rem;
}

.page-about .about-credentials__item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  background: rgba(248, 250, 252, 0.07);
  border: 1px solid rgba(248, 250, 252, 0.12);
  border-radius: 1.25rem;
  padding: 1.5rem;
  transition: background var(--transition-fast), transform var(--transition-base);
}

.page-about .about-credentials__item:hover {
  background: rgba(248, 250, 252, 0.11);
  transform: translateY(-0.25rem);
}

.page-about .about-credentials__badge {
  flex: 0 0 3.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 3.25rem;
  border-radius: 0.875rem;
  background: linear-gradient(135deg, #D4AF37 0%, #a8842a 100%);
  color: #3A2D2D;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 0.9375rem;
  letter-spacing: 0.04em;
  box-shadow: 0 0.25rem 0.75rem rgba(212, 175, 55, 0.25);
}

.page-about .about-credentials__body h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1.4;
  color: #fff;
  margin: 0 0 0.5rem;
}

.page-about .about-credentials__body p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: rgba(248, 250, 252, 0.74);
}

/* CTA */
.page-about .about-cta {
  background: var(--snow-white);
  padding: 4rem 0;
}

.page-about .about-cta__inner {
  display: grid;
  gap: 1.75rem;
  align-items: center;
  background: #fff;
  border: 1px solid var(--fog-gray);
  border-radius: 1.75rem;
  padding: 2.25rem 1.75rem;
  box-shadow: 0 0.75rem 2rem rgba(27, 77, 137, 0.08);
  position: relative;
  overflow: hidden;
}

.page-about .about-cta__inner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--plateau-blue), var(--warm-orange), var(--wine-red), var(--gold), var(--deep-teal));
}

.page-about .about-cta h2 {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.625rem, 3.5vw, 2.25rem);
  line-height: 1.25;
  margin: 0;
  color: var(--deep-gray);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
}

.page-about .about-cta__actions .btn {
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  border-radius: 999px;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}

.page-about .about-cta__actions .btn:hover,
.page-about .about-cta__actions .btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 0.5rem 1.25rem rgba(27, 77, 137, 0.18);
}

.page-about .about-cta__actions .btn--primary {
  background: var(--plateau-blue);
  color: #fff;
}

.page-about .about-cta__actions .btn--ghost {
  background: transparent;
  color: var(--plateau-blue);
  border: 1px solid rgba(27, 77, 137, 0.4);
}

.page-about .about-cta__actions .btn--accent {
  background: var(--warm-orange);
  color: #fff;
}

/* 媒体查询 768px */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 5rem 0 4rem;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1.3fr 0.7fr;
    gap: 3.5rem;
    align-items: end;
    margin-top: 3.5rem;
  }

  .page-about .about-hero__stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3.5rem;
  }

  .page-about .about-origin__layout {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
  }

  .page-about .about-journey__head {
    grid-template-columns: 1fr 1fr;
    align-items: end;
    gap: 2rem;
  }

  .page-about .about-journey__summary {
    justify-self: end;
    text-align: right;
  }

  .page-about .about-philosophy__grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }

  .page-about .about-philosophy__card--local {
    grid-column: 1 / -1;
  }

  .page-about .about-philosophy__media {
    grid-column: 1 / -1;
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .page-about .about-credentials__grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }

  .page-about .about-cta__inner {
    grid-template-columns: 1fr auto;
    gap: 2rem;
    padding: 2.5rem 2.5rem;
  }
}

/* 媒体查询 1080px */
@media (min-width: 1080px) {
  .page-about .about-origin,
  .page-about .about-journey,
  .page-about .about-philosophy,
  .page-about .about-credentials {
    padding: 6rem 0;
  }

  .page-about .about-origin__layout {
    grid-template-columns: 1fr 0.8fr;
    gap: 4rem;
  }

  .page-about .about-timeline {
    padding: 0 2rem;
  }

  .page-about .about-timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .about-timeline__item {
    width: 50%;
    padding: 0 3.5rem 0 0;
    margin-bottom: 2.75rem;
  }

  .page-about .about-timeline__item:nth-child(even) {
    margin-left: 50%;
    padding: 0 0 0 3.5rem;
  }

  .page-about .about-timeline__item:nth-child(odd) {
    margin-right: 50%;
    text-align: right;
  }

  .page-about .about-timeline__item::before {
    left: auto;
    right: -0.34375rem;
    top: 0.5rem;
  }

  .page-about .about-timeline__item:nth-child(even)::before {
    left: -0.34375rem;
    right: auto;
  }

  .page-about .about-timeline__year:hover {
    transform: translateX(-0.25rem);
  }

  .page-about .about-timeline__item:nth-child(odd):hover .about-timeline__year,
  .page-about .about-timeline__item:nth-child(odd) .about-timeline__year {
    transform: translateX(0.25rem);
  }

  .page-about .about-timeline__content p {
    margin-left: auto;
  }

  .page-about .about-philosophy__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-philosophy__card--local {
    grid-column: auto;
  }

  .page-about .about-philosophy__card {
    padding: 2rem 1.75rem;
  }

  .page-about .about-philosophy__media {
    grid-column: 1 / -1;
    grid-template-columns: 1.1fr 1fr;
    gap: 2rem;
    padding: 1.5rem;
  }

  .page-about .about-cta__inner {
    padding: 3rem 3.5rem;
  }
}