/* ===== 品牌介绍专属样式 ===== */
.page-about {
  --about-hero-gap: 2rem;
  --about-card-radius: 12px;
  --about-transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  color: var(--clr-text-primary);
  background-color: var(--clr-secondary);
  overflow-x: hidden;
}

/* ----- 面包屑 ----- */
.page-about .breadcrumb {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 1rem var(--gap) 0;
}
.page-about .breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.8rem;
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--clr-text-secondary);
}
.page-about .breadcrumb a {
  color: var(--clr-accent);
  text-decoration: none;
  transition: color 0.2s;
}
.page-about .breadcrumb a:hover {
  color: var(--clr-primary);
  text-decoration: underline;
}
.page-about .breadcrumb [aria-current="page"] {
  color: var(--clr-text-primary);
  font-weight: 600;
}
.page-about .breadcrumb li:not(:last-child)::after {
  content: "›";
  margin-left: 0.4rem;
  color: var(--clr-text-secondary);
}

/* ----- 首屏分屏 ----- */
.page-about .about-hero {
  display: flex;
  flex-direction: column;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gap) 3rem;
  gap: var(--about-hero-gap);
}
.page-about .about-hero__text {
  flex: 0 0 auto;
  order: 2;
}
.page-about .about-hero__title {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  line-height: 1.1;
  color: var(--clr-text-primary);
  margin: 0 0 1.2rem;
  letter-spacing: 0.02em;
  text-shadow: 0 2px 12px rgba(255, 107, 53, 0.25);
}
.page-about .about-hero__desc {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--clr-text-secondary);
  max-width: 36em;
  margin: 0 0 1.8rem;
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.page-about .about-hero__actions .btn {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  padding: 0.75rem 2rem;
  border: 2px solid transparent;
  border-radius: 4px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--about-transition);
  cursor: pointer;
}
.page-about .about-hero__actions .btn--primary {
  background: var(--clr-primary);
  color: var(--clr-text-primary);
  border-color: var(--clr-primary);
}
.page-about .about-hero__actions .btn--primary:hover {
  background: var(--clr-primary-dark);
  border-color: var(--clr-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}
.page-about .about-hero__actions .btn:not(.btn--primary) {
  background: transparent;
  color: var(--clr-accent);
  border-color: var(--clr-accent);
}
.page-about .about-hero__actions .btn:not(.btn--primary):hover {
  background: rgba(0, 180, 216, 0.12);
  transform: translateY(-2px);
}

.page-about .about-hero__visual {
  flex: 0 0 auto;
  order: 1;
  position: relative;
}
.page-about .about-hero__image-wrap {
  position: relative;
  width: 100%;
  border-radius: var(--about-card-radius);
  overflow: hidden;
  background: var(--clr-neutral-dark);
  aspect-ratio: 4 / 3;
}
.page-about .about-hero__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}
.page-about .about-hero__image-wrap:hover .about-hero__image {
  transform: scale(1.04);
}
.page-about .about-hero__pattern {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0.85;
  animation: aboutPatternFlow 12s ease-in-out infinite alternate;
}

@keyframes aboutPatternFlow {
  0% { transform: translateX(-2%) translateY(0%); }
  100% { transform: translateX(2%) translateY(-2%); }
}

/* ----- 核心价值 ----- */
.page-about .about-values {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 3rem var(--gap) 4rem;
  position: relative;
}
.page-about .about-values::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-primary), var(--clr-accent), transparent);
  transform: translateX(-50%);
}
.page-about .about-values__heading {
  font-family: var(--font-heading);
  font-size: 2rem;
  text-align: center;
  color: var(--clr-text-primary);
  margin: 0 0 2.5rem;
  letter-spacing: 0.04em;
}
.page-about .about-values__grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.page-about .about-values__card {
  background: var(--clr-neutral-dark);
  border-radius: var(--about-card-radius);
  padding: 2rem 1.5rem;
  position: relative;
  overflow: hidden;
  transition: all var(--about-transition);
  border-left: 4px solid transparent;
  clip-path: polygon(0% 0%, 100% 0%, 98% 100%, 2% 100%);
}
.page-about .about-values__card--professional {
  border-left-color: var(--clr-accent);
  background: linear-gradient(135deg, rgba(0, 180, 216, 0.08), var(--clr-neutral-dark));
}
.page-about .about-values__card--passion {
  border-left-color: var(--clr-primary);
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.08), var(--clr-neutral-dark));
}
.page-about .about-values__card--reliable {
  border-left-color: var(--clr-accent2);
  background: linear-gradient(135deg, rgba(155, 89, 182, 0.08), var(--clr-neutral-dark));
}
.page-about .about-values__card:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
}
.page-about .about-values__icon {
  width: 64px;
  height: 64px;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-about .about-values__svg {
  width: 64px;
  height: 64px;
  display: block;
}
.page-about .about-values__img {
  width: 64px;
  height: 64px;
  object-fit: contain;
  border-radius: 8px;
  display: block;
}
.page-about .about-values__label {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  color: var(--clr-text-primary);
  margin: 0 0 0.5rem;
}
.page-about .about-values__desc {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--clr-text-secondary);
  margin: 0;
  max-width: 28em;
}
.page-about .about-values__card--professional .about-values__label { color: var(--clr-accent); }
.page-about .about-values__card--passion .about-values__label { color: var(--clr-primary); }
.page-about .about-values__card--reliable .about-values__label { color: var(--clr-accent2); }

/* ----- 地域特色 ----- */
.page-about .about-region {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 2rem var(--gap) 4rem;
  position: relative;
}
.page-about .about-region::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--clr-accent2), var(--clr-primary), transparent);
  transform: translateX(-50%);
}
.page-about .about-region__heading {
  font-family: var(--font-heading);
  font-size: 2rem;
  text-align: center;
  color: var(--clr-text-primary);
  margin: 0 0 2rem;
  letter-spacing: 0.04em;
}
.page-about .about-region__content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.page-about .about-region__media {
  position: relative;
}
.page-about .about-region__image-wrap {
  border-radius: var(--about-card-radius);
  overflow: hidden;
  background: var(--clr-neutral-dark);
  aspect-ratio: 4 / 3;
  position: relative;
}
.page-about .about-region__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}
.page-about .about-region__image-wrap:hover .about-region__image {
  transform: scale(1.04);
}
.page-about .about-region__pattern {
  position: absolute;
  bottom: -10%;
  left: 0;
  width: 100%;
  height: auto;
  pointer-events: none;
  opacity: 0.6;
  mix-blend-mode: screen;
  animation: aboutRegionFlow 10s ease-in-out infinite alternate;
}
@keyframes aboutRegionFlow {
  0% { transform: translateX(-3%) scale(1.02); }
  100% { transform: translateX(3%) scale(1); }
}
.page-about .about-region__text {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--clr-text-secondary);
}
.page-about .about-region__text p {
  margin: 0 0 1.2rem;
}
.page-about .about-region__btn {
  margin-top: 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  padding: 0.7rem 2rem;
  background: var(--clr-primary);
  color: var(--clr-text-primary);
  border: 2px solid var(--clr-primary);
  border-radius: 4px;
  text-decoration: none;
  transition: all var(--about-transition);
}
.page-about .about-region__btn:hover {
  background: var(--clr-primary-dark);
  border-color: var(--clr-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.35);
}

/* ----- 动画基础 (渐进增强) ----- */
.page-about [data-animate="fade-in"] {
  opacity: 0;
  animation: aboutFadeIn 0.8s ease forwards;
}
.page-about [data-animate="fade-in"]:nth-child(2) {
  animation-delay: 0.15s;
}
.page-about [data-animate="fade-in"]:nth-child(3) {
  animation-delay: 0.3s;
}
@keyframes aboutFadeIn {
  to { opacity: 1; }
}

.page-about [data-animate="slide-up"] {
  opacity: 0;
  transform: translateY(24px);
  animation: aboutSlideUp 0.6s ease forwards;
}
.page-about [data-animate="slide-up"]:nth-child(2) {
  animation-delay: 0.1s;
}
.page-about [data-animate="slide-up"]:nth-child(3) {
  animation-delay: 0.2s;
}
@keyframes aboutSlideUp {
  to { opacity: 1; transform: translateY(0); }
}

.page-about [data-animate="stagger"] > * {
  opacity: 0;
  transform: translateY(20px);
  animation: aboutStaggerItem 0.5s ease forwards;
}
.page-about [data-animate="stagger"] > *:nth-child(1) { animation-delay: 0.05s; }
.page-about [data-animate="stagger"] > *:nth-child(2) { animation-delay: 0.15s; }
.page-about [data-animate="stagger"] > *:nth-child(3) { animation-delay: 0.25s; }
@keyframes aboutStaggerItem {
  to { opacity: 1; transform: translateY(0); }
}

/* ===== 桌面端 (≥768px) ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    flex-direction: row;
    align-items: center;
    padding-top: 1.5rem;
    padding-bottom: 4rem;
  }
  .page-about .about-hero__text {
    flex: 1 1 45%;
    order: 1;
    padding-right: 2rem;
  }
  .page-about .about-hero__visual {
    flex: 1 1 55%;
    order: 2;
  }
  .page-about .about-hero__title {
    font-size: 3.6rem;
  }
  .page-about .about-hero__desc {
    font-size: 1.15rem;
  }
  .page-about .about-hero__image-wrap {
    aspect-ratio: 4 / 3;
    max-height: 70vh;
  }

  .page-about .about-values__grid {
    flex-direction: row;
    gap: 1.8rem;
  }
  .page-about .about-values__card {
    flex: 1 1 0;
    padding: 2.5rem 2rem;
  }
  .page-about .about-values__heading {
    font-size: 2.4rem;
    margin-bottom: 3rem;
  }

  .page-about .about-region__content {
    flex-direction: row;
    align-items: center;
    gap: 3rem;
  }
  .page-about .about-region__media {
    flex: 1 1 50%;
  }
  .page-about .about-region__text {
    flex: 1 1 50%;
    font-size: 1.05rem;
  }
  .page-about .about-region__heading {
    font-size: 2.4rem;
    margin-bottom: 2.5rem;
  }
  .page-about .about-region__image-wrap {
    aspect-ratio: 4 / 3;
  }
  .page-about .about-region__pattern {
    bottom: -6%;
  }
}

/* ===== 大桌面端 (≥1024px) ===== */
@media (min-width: 1024px) {
  .page-about .about-hero__title {
    font-size: 4.2rem;
  }
  .page-about .about-hero__desc {
    font-size: 1.2rem;
  }
  .page-about .about-values__card {
    padding: 3rem 2.5rem;
  }
  .page-about .about-values__icon {
    width: 80px;
    height: 80px;
    margin-bottom: 1.2rem;
  }
  .page-about .about-values__svg {
    width: 80px;
    height: 80px;
  }
  .page-about .about-values__img {
    width: 80px;
    height: 80px;
  }
  .page-about .about-values__label {
    font-size: 1.8rem;
  }
  .page-about .about-values__desc {
    font-size: 1rem;
  }
  .page-about .about-region__text {
    font-size: 1.1rem;
  }
}