.page-about {
  --about-hero-min-height: 72vh;
  --about-gap: 2.5rem;
  --about-card-radius: 14px;
  --about-panel-width: 320px;
  --about-transition-speed: 0.6s;
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: var(--spacing-lg, 1.6);
  background: var(--color-primary);
  overflow-x: hidden;
}

/* ===== 面包屑 ===== */
.page-about .about-breadcrumb {
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  padding: 1.2rem var(--spacing-md, 1rem) 0;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--color-neutral-light);
  letter-spacing: 0.02em;
}

.page-about .about-breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.25s;
}

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

.page-about .about-breadcrumb__sep {
  margin: 0 0.4rem;
  color: var(--color-neutral-light);
}

.page-about .about-breadcrumb__current {
  color: var(--color-heading);
}

/* ===== 首屏英雄 ===== */
.page-about .about-hero {
  position: relative;
  min-height: var(--about-hero-min-height);
  display: flex;
  align-items: center;
  background: var(--color-primary);
  overflow: hidden;
  padding: 2rem var(--spacing-md, 1rem) 3rem;
}

.page-about .about-hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 54%;
  height: 100%;
  background: var(--color-panel-bg);
  clip-path: polygon(18% 0, 100% 0, 100% 100%, 0% 100%);
  z-index: 0;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    65deg,
    transparent,
    transparent 40px,
    rgba(57, 255, 20, 0.025) 40px,
    rgba(57, 255, 20, 0.025) 41px
  );
  z-index: 0;
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: var(--about-gap);
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  width: 100%;
  align-items: center;
}

.page-about .about-hero__text {
  flex: 1 1 100%;
  text-align: center;
}

.page-about .about-hero__label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  padding: 0.3rem 1rem;
  margin-bottom: 1.2rem;
  background: rgba(57, 255, 20, 0.06);
}

.page-about .about-hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 8vw, 4.4rem);
  line-height: 1.08;
  color: var(--color-heading);
  margin: 0 0 1rem;
  letter-spacing: 0.01em;
  text-shadow: 0 2px 20px rgba(57, 255, 20, 0.12);
}

.page-about .about-hero__desc {
  font-size: 1.05rem;
  max-width: 540px;
  margin: 0 auto 1.6rem;
  color: var(--color-text);
  opacity: 0.92;
}

.page-about .about-hero__cta {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  padding: 0.75rem 2rem;
  background: var(--color-accent);
  color: var(--color-primary);
  border: none;
  border-radius: 4px;
  text-decoration: none;
  transition: transform 0.25s, box-shadow 0.25s;
  box-shadow: 0 0 20px rgba(57, 255, 20, 0.25);
}

.page-about .about-hero__cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 32px rgba(57, 255, 20, 0.45);
}

.page-about .about-hero__visual {
  flex: 1 1 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  max-width: 800px;
  width: 100%;
}

.page-about .about-hero__img {
  width: 100%;
  height: auto;
  max-width: 800px;
  object-fit: cover;
  border-radius: var(--about-card-radius);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(57, 255, 20, 0.15);
}

/* ===== 通用区块标签 ===== */
.page-about .about-section__tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  display: inline-block;
  margin-bottom: 0.3rem;
  opacity: 0.7;
}

.page-about .about-section__heading {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  line-height: 1.15;
  color: var(--color-heading);
  margin: 0 0 1.2rem;
  letter-spacing: 0.01em;
}

/* ===== 品牌定位 ===== */
.page-about .about-mission {
  padding: 3.5rem var(--spacing-md, 1rem);
  background: var(--color-panel-bg);
  position: relative;
}

.page-about .about-mission__inner {
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--about-gap);
  align-items: center;
}

.page-about .about-mission__content {
  flex: 1 1 100%;
}

.page-about .about-mission__text {
  font-size: 1rem;
  margin: 0 0 0.8rem;
  max-width: 600px;
  color: var(--color-text);
}

.page-about .about-mission__link {
  display: inline-block;
  margin-top: 0.8rem;
  font-size: 0.95rem;
  padding: 0.6rem 1.6rem;
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
  border-radius: 4px;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.25s, color 0.25s;
}

.page-about .about-mission__link:hover {
  background: var(--color-accent);
  color: var(--color-primary);
}

.page-about .about-mission__visual {
  flex: 1 1 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  max-width: var(--about-panel-width);
}

.page-about .data-mini-panel {
  width: 100%;
  background: rgba(10, 31, 61, 0.7);
  border-radius: var(--about-card-radius);
  border: 1px solid var(--color-neutral-light);
  padding: 1.2rem 1.2rem 0.9rem;
  backdrop-filter: blur(6px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}

.page-about .data-mini-panel__header {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--color-neutral-light);
}

.page-about .data-mini-panel__dot {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.page-about .data-mini-panel__dot--accent {
  background: var(--color-accent);
}

.page-about .data-mini-panel__dot--orange {
  background: var(--color-secondary-accent);
}

.page-about .data-mini-panel__dot--neutral {
  background: var(--color-neutral-light);
}

.page-about .data-mini-panel__body {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-bottom: 0.8rem;
}

.page-about .data-mini-panel__row {
  height: 10px;
  background: linear-gradient(90deg, var(--color-accent) 0%, rgba(57, 255, 20, 0.2) 100%);
  border-radius: 3px;
  opacity: 0.7;
  transition: opacity 0.3s;
}

.page-about .data-mini-panel__row:nth-child(odd) {
  background: linear-gradient(90deg, var(--color-secondary-accent) 0%, rgba(255, 107, 53, 0.2) 100%);
}

.page-about .data-mini-panel__footer {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding-top: 0.5rem;
  border-top: 1px solid rgba(42, 63, 95, 0.5);
}

.page-about .data-mini-panel__pulse {
  display: block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: about-pulse 1.6s ease-in-out infinite;
}

@keyframes about-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.75); }
}

.page-about .data-mini-panel__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--color-neutral-light);
  text-transform: uppercase;
}

/* ===== 技术优势 ===== */
.page-about .about-tech {
  padding: 3.5rem var(--spacing-md, 1rem);
  background: var(--color-primary);
}

.page-about .about-tech__inner {
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--about-gap);
  align-items: center;
}

.page-about .about-tech__visual {
  flex: 1 1 100%;
  display: flex;
  justify-content: center;
  width: 100%;
  max-width: 620px;
}

.page-about .about-tech__img {
  width: 100%;
  height: auto;
  max-width: 600px;
  object-fit: cover;
  border-radius: var(--about-card-radius);
  box-shadow: 0 8px 36px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(57, 255, 20, 0.1);
}

.page-about .about-tech__content {
  flex: 1 1 100%;
}

.page-about .about-tech__text {
  font-size: 1rem;
  margin: 0 0 0.8rem;
  max-width: 600px;
  color: var(--color-text);
}

.page-about .about-tech__link {
  display: inline-block;
  margin-top: 0.8rem;
  font-size: 0.95rem;
  padding: 0.7rem 1.8rem;
  background: var(--color-accent);
  color: var(--color-primary);
  border: none;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.25s, box-shadow 0.25s;
  box-shadow: 0 0 16px rgba(57, 255, 20, 0.2);
}

.page-about .about-tech__link:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 28px rgba(57, 255, 20, 0.4);
}

/* ===== 专家内容体系 ===== */
.page-about .about-experts {
  padding: 3.5rem var(--spacing-md, 1rem);
  background: var(--color-panel-bg);
  position: relative;
}

.page-about .about-experts::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  opacity: 0.3;
}

.page-about .about-experts__inner {
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  text-align: center;
}

.page-about .about-experts__text {
  font-size: 1rem;
  margin: 0 auto 0.8rem;
  max-width: 660px;
  color: var(--color-text);
}

.page-about .about-experts__link {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.95rem;
  padding: 0.6rem 1.6rem;
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
  border-radius: 4px;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.25s, color 0.25s;
}

.page-about .about-experts__link:hover {
  background: var(--color-accent);
  color: var(--color-primary);
}

/* ===== 底部轨迹装饰 ===== */
.page-about .about-trajectory {
  padding: 2rem var(--spacing-md, 1rem) 3rem;
  background: var(--color-primary);
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-about .about-trajectory__img {
  width: 100%;
  height: auto;
  max-width: 400px;
  object-fit: contain;
  opacity: 0.55;
  transition: opacity 0.4s;
}

.page-about .about-trajectory__img:hover {
  opacity: 0.85;
}

/* ===== 滚动渐入效果（渐进增强） ===== */
.page-about [data-scroll-reveal] {
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--about-transition-speed) ease, transform var(--about-transition-speed) ease;
}

/* ===== 加载动画（首屏） ===== */
.page-about [data-animate] {
  opacity: 0;
  animation: about-fade-up 0.7s ease forwards;
}

.page-about [data-animate="label"] { animation-delay: 0.1s; }
.page-about [data-animate="title"] { animation-delay: 0.25s; }
.page-about [data-animate="desc"] { animation-delay: 0.4s; }
.page-about [data-animate="cta"] { animation-delay: 0.55s; }
.page-about [data-animate="chart"] { animation-delay: 0.35s; }

@keyframes about-fade-up {
  0% {
    opacity: 0;
    transform: translateY(24px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== 桌面端媒体查询 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 2.5rem var(--spacing-lg, 2rem) 4rem;
  }

  .page-about .about-hero__inner {
    flex-direction: row;
    align-items: center;
    gap: 3rem;
  }

  .page-about .about-hero__text {
    flex: 1 1 48%;
    text-align: left;
  }

  .page-about .about-hero__desc {
    margin: 0 0 1.6rem;
  }

  .page-about .about-hero__visual {
    flex: 1 1 48%;
    max-width: 50%;
  }

  .page-about .about-mission {
    padding: 4.5rem var(--spacing-lg, 2rem);
  }

  .page-about .about-mission__inner {
    flex-direction: row;
    align-items: center;
    gap: 3rem;
  }

  .page-about .about-mission__content {
    flex: 1 1 55%;
  }

  .page-about .about-mission__visual {
    flex: 1 1 40%;
    max-width: var(--about-panel-width);
  }

  .page-about .about-tech {
    padding: 4.5rem var(--spacing-lg, 2rem);
  }

  .page-about .about-tech__inner {
    flex-direction: row;
    align-items: center;
    gap: 3rem;
  }

  .page-about .about-tech__visual {
    flex: 1 1 48%;
    max-width: 50%;
    order: 0;
  }

  .page-about .about-tech__content {
    flex: 1 1 48%;
    order: 1;
  }

  .page-about .about-experts {
    padding: 4.5rem var(--spacing-lg, 2rem);
  }

  .page-about .about-experts__inner {
    max-width: 780px;
  }

  .page-about .about-trajectory {
    padding: 2.5rem var(--spacing-lg, 2rem) 4rem;
  }

  .page-about .about-section__heading {
    font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    padding: 3rem var(--spacing-xl, 3rem) 5rem;
  }

  .page-about .about-hero__inner {
    gap: 4rem;
  }

  .page-about .about-hero__title {
    font-size: clamp(3rem, 6vw, 4.8rem);
  }

  .page-about .about-hero__desc {
    font-size: 1.15rem;
    max-width: 580px;
  }
}

/* ===== 窄屏安全 ===== */
@media (max-width: 480px) {
  .page-about .about-hero__title {
    font-size: 1.8rem;
  }

  .page-about .about-hero__desc {
    font-size: 0.95rem;
  }

  .page-about .about-hero__cta,
  .page-about .about-tech__link,
  .page-about .about-mission__link,
  .page-about .about-experts__link {
    font-size: 0.85rem;
    padding: 0.55rem 1.2rem;
  }

  .page-about .about-section__heading {
    font-size: 1.4rem;
  }

  .page-about .about-mission,
  .page-about .about-tech,
  .page-about .about-experts {
    padding: 2.5rem var(--spacing-sm, 0.5rem);
  }

  .page-about .data-mini-panel {
    padding: 0.9rem 0.9rem 0.7rem;
  }
}