/* 品牌介绍页专属样式——限定在 .page-about 作用域内 */
.page-about {
  /* 变量定义 */
  --panel-bg: #FFFFFF;
  --panel-hover-bg: color-mix(in srgb, var(--color-gold) 10%, var(--color-bg));
  --progress-height: 6px;
  --progress-radius: 3px;
  --panel-radius: 4px;
  --gap: 2rem;
}

/* ===== 首屏 Hero ===== */
.page-about .about-hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: var(--color-navy-dark);
}

.page-about .hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.page-about .hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,32,39,0.85) 0%, rgba(32,58,67,0.6) 100%);
  z-index: 1;
}

.page-about .hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 3rem 1.5rem;
  max-width: 800px;
  width: 100%;
}

.page-about .breadcrumb {
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: center;
}

.page-about .breadcrumb ol {
  list-style: none;
  display: flex;
  gap: 0.5rem;
  padding: 0;
  margin: 0;
  font-family: var(--font-small);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-ash);
}

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

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

.page-about .breadcrumb li[aria-current="page"] {
  color: var(--color-white);
}

.page-about .hero-title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(2.5rem, 8vw, 5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--color-white);
  margin: 0 0 0.5rem;
}

.page-about .hero-subtitle {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-ash);
  margin: 0 0 1rem;
}

.page-about .hero-subtitle .text-gold {
  color: var(--color-gold);
  font-weight: 600;
}

.page-about .hero-desc {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-ash);
  max-width: 550px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}

.page-about .hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.page-about .hero-actions .btn {
  font-size: 0.9rem;
}

/* ===== 切角面板区 ===== */
.page-about .about-panels {
  padding: 4rem 0;
  background-color: var(--color-bg);
}

.page-about .panels-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-about .panel {
  background-color: var(--panel-bg);
  clip-path: polygon(0% 0%, calc(100% - 12px) 0%, 100% 12px, 100% 100%, 12px 100%, 0% calc(100% - 12px));
  padding: 2rem 1.5rem;
  transition: background-color var(--transition), box-shadow var(--transition);
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.page-about .panel:hover {
  background-color: var(--panel-hover-bg);
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

.page-about .panel-title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--color-navy);
  margin: 0 0 1rem;
  letter-spacing: -0.01em;
}

.page-about .panel-text {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  margin: 0 0 1.2rem;
}

.page-about .panel .btn--small {
  font-size: 0.8rem;
  padding: 0.5rem 1rem;
}

/* 数据面板 - 图文flex */
.page-about .panel-content-flex {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.page-about .panel-content-reverse {
  flex-direction: column;
}

.page-about .panel-text-block {
  flex: 1;
}

.page-about .panel-image-wrapper {
  flex: 0 0 auto;
  max-width: 100%;
}

.page-about .panel-image-wrapper img {
  width: 100%;
  height: auto;
  max-width: 400px;
  display: block;
  border-radius: var(--panel-radius);
  object-fit: cover;
}

/* ===== 数据指标条 ===== */
.page-about .data-metrics {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-top: 0.5rem;
}

.page-about .metric {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.page-about .metric-label {
  font-family: var(--font-small);
  font-weight: 300;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text);
  min-width: 100px;
}

.page-about .progress-bar {
  flex: 1;
  height: var(--progress-height);
  background-color: var(--color-ash);
  border-radius: var(--progress-radius);
  overflow: hidden;
  min-width: 100px;
}

.page-about .progress-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--color-navy), var(--color-gold));
  border-radius: var(--progress-radius);
  animation: barGrow 1.8s ease-out forwards;
  transform-origin: left;
}

@keyframes barGrow {
  from { width: 0%; }
  to { width: var(--fill, 85%); }
}

/* 各条不同目标通过内联 style 的 width 实现，但要覆盖 animation 的 to 值 */
.page-about .progress-fill {
  animation-name: barGrow;
  animation-fill-mode: forwards;
}

/* 由于 animation to 不能灵活设置，使用初始 width 为0，靠 animation 设定最终宽度比较困难，这里改用 transition 方法更可控 */
/* 重新实现：使用 transition 配合 JS? 但我们用 CSS 动画并指定子类 */
.page-about .metric:nth-child(1) .progress-fill { --fill: 85%; }
.page-about .metric:nth-child(2) .progress-fill { --fill: 92%; }
.page-about .metric:nth-child(3) .progress-fill { --fill: 78%; }

@keyframes barGrow {
  from { width: 0%; }
  to { width: var(--fill); }
}

/* ===== 响应式 桌面端 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    min-height: 80vh;
  }

  .page-about .hero-content {
    padding: 4rem 2rem;
  }

  .page-about .panels-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .page-about .panel {
    padding: 2.5rem;
  }

  .page-about .panel-content-flex {
    flex-direction: row;
    align-items: flex-start;
  }

  .page-about .panel-content-reverse {
    flex-direction: row-reverse;
  }

  .page-about .panel-text-block {
    flex: 1;
  }

  .page-about .panel-image-wrapper {
    flex: 0 0 45%;
    max-width: 45%;
  }

  .page-about .panel-image-wrapper img {
    max-width: 100%;
  }

  .page-about .data-metrics {
    padding-top: 1rem;
  }

  .page-about .breadcrumb {
    justify-content: flex-start;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    min-height: 90vh;
  }

  .page-about .panel {
    padding: 3rem;
  }
}