/* page-about 专属样式 —— 品牌概况页面 */
.page-about {
  --c-accent: #d4a843;
  --c-brand: #1a4a3a;
  --c-bg: #ffffff;
  --c-bg-light: #f2f2f2;
  --c-border: #b3b3b3;
  --c-dark: #333333;
  --c-text: #1a1a1a;
  --c-text-secondary: #4a4a4a;
  --font-mono: 'DM Mono', 'JetBrains Mono', monospace;
  --font-body: 'Noto Sans SC', 'PingFang SC', sans-serif;
  --radius-large: 16px;
  --radius-capsule: 999px;
  --nav-height: 60px;
  --max-width: 1440px;
  display: block;
}

/* 面包屑 */
.page-about__breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--c-text-secondary);
  margin-bottom: 0.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}
.page-about__breadcrumb a {
  color: var(--c-brand);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-about__breadcrumb a:hover {
  color: var(--c-accent);
}
.page-about__breadcrumb-sep {
  margin: 0 0.25rem;
  color: var(--c-border);
}

/* Hero 框景区 */
.page-about__hero {
  position: relative;
  border: 2px solid var(--c-brand);
  border-radius: var(--radius-large);
  overflow: hidden;
  margin-bottom: 2rem;
  background: var(--c-bg);
}
.page-about__hero-bg {
  position: relative;
  width: 100%;
  height: auto;
  max-height: 35vh;
  overflow: hidden;
}
.page-about__hero-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  max-height: 35vh;
}
.page-about__hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 74, 58, 0.65) 0%, rgba(26, 74, 58, 0.2) 100%);
  pointer-events: none;
}
.page-about__hero-content {
  padding: 1.5rem 1.25rem;
  position: relative;
  z-index: 2;
}
.page-about__hero-title {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.6rem, 2.8vw, 2.8rem);
  color: var(--c-text);
  margin: 0.5rem 0 0.75rem;
  line-height: 1.25;
}
.page-about__hero-desc {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--c-text-secondary);
  max-width: 65ch;
  line-height: 1.6;
}

/* 左右分屏 */
.page-about__split {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-bottom: 2rem;
}

/* 左侧控制台 */
.page-about__console {
  background: var(--c-brand);
  border-radius: var(--radius-large);
  padding: 1.5rem 1.25rem;
  color: #fff;
  position: relative;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.page-about__console-panel {
  position: relative;
  z-index: 2;
}
.page-about__console-heading {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0 0 1rem;
  color: var(--c-accent);
  letter-spacing: 0.02em;
}
.page-about__console-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.page-about__console-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  padding-bottom: 0.5rem;
}
.page-about__console-label {
  font-family: var(--font-body);
  font-size: 0.9rem;
  opacity: 0.8;
}
.page-about__console-value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--c-accent);
}
.page-about__console-value--animate {
  animation: pulseConsoleValue 3s ease-in-out infinite;
}
@keyframes pulseConsoleValue {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.75; transform: scale(1.02); }
}
.page-about__console-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.15);
  margin: 0.75rem 0;
}
.page-about__console-note {
  font-family: var(--font-body);
  font-size: 0.85rem;
  opacity: 0.75;
  line-height: 1.5;
}
.page-about__console-bg {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 120px;
  height: auto;
  opacity: 0.25;
  pointer-events: none;
  border-radius: 0 0 var(--radius-large) 0;
  object-fit: cover;
}

/* 右侧内容区 */
.page-about__content {
  flex: 1;
}
.page-about__section {
  margin-bottom: 2.5rem;
}
.page-about__section-heading {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.35rem, 2vw, 2rem);
  color: var(--c-brand);
  margin: 0 0 1rem;
  border-left: 4px solid var(--c-accent);
  padding-left: 0.75rem;
}
.page-about__section-text {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--c-text);
  margin: 0 0 0.75rem;
  max-width: 70ch;
}
.page-about__features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 1rem;
}
.page-about__feature-card {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--c-bg-light);
  border-radius: var(--radius-large);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: default;
}
.page-about__feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(26, 74, 58, 0.08);
}
.page-about__feature-icon {
  flex-shrink: 0;
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border-radius: var(--radius-large);
  border: 1px solid var(--c-border);
}
.page-about__feature-icon svg {
  width: 80px;
  height: 80px;
  display: block;
}
.page-about__feature-body {
  flex: 1;
}
.page-about__feature-title {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0 0 0.5rem;
  color: var(--c-brand);
  cursor: pointer;
  position: relative;
  padding-right: 1.5rem;
}
.page-about__feature-title::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 0;
  font-weight: 700;
  color: var(--c-accent);
  transition: transform 0.2s;
}
.is-expanded .page-about__feature-title::after {
  content: "–";
  transform: rotate(0deg);
}
.page-about__feature-desc {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--c-text-secondary);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, margin 0.25s ease;
  margin: 0;
}
.is-expanded .page-about__feature-desc {
  max-height: 300px;
  margin-top: 0.5rem;
}
.page-about__features-cta {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--c-text-secondary);
  margin-top: 0.75rem;
}
.page-about__features-cta a {
  color: var(--c-brand);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-about__features-cta a:hover {
  color: var(--c-accent);
}

/* 为什么选择 */
.page-about__reasons {
  list-style: none;
  padding: 0;
  margin: 0 0 0.75rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.page-about__reason-item {
  display: flex;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--c-bg-light);
  border-radius: var(--radius-large);
  align-items: flex-start;
  border-left: 3px solid var(--c-accent);
}
.page-about__reason-icon {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--c-accent);
  width: 2rem;
  flex-shrink: 0;
  text-align: center;
}
.page-about__reason-text {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--c-text);
  line-height: 1.6;
}
.page-about__reason-text strong {
  color: var(--c-brand);
}
.page-about__reasons-cta {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--c-text-secondary);
  margin-top: 0.75rem;
}
.page-about__reasons-cta a {
  color: var(--c-brand);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-about__reasons-cta a:hover {
  color: var(--c-accent);
}

/* 信任条 */
.page-about__trust-bar {
  background: var(--c-brand);
  border-radius: var(--radius-large);
  padding: 1.5rem 1.25rem;
  text-align: center;
  margin-top: 1rem;
}
.page-about__trust-text {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 1rem;
  color: var(--c-accent);
  margin: 0;
  line-height: 1.5;
}

/* 桌面版样式 */
@media (min-width: 768px) {
  .page-about__hero-content {
    padding: 2rem 2.5rem;
  }
  .page-about__hero-title {
    font-size: clamp(2rem, 3vw, 3.2rem);
  }
  .page-about__hero-desc {
    font-size: 1.1rem;
  }
  .page-about__split {
    flex-direction: row;
  }
  .page-about__console {
    width: 32%;
    min-width: 260px;
    max-width: 340px;
    flex-shrink: 0;
    padding: 2rem 1.5rem;
  }
  .page-about__console-bg {
    width: 180px;
  }
  .page-about__content {
    width: 68%;
  }
  .page-about__features {
    grid-template-columns: 1fr 1fr;
  }
  .page-about__reasons {
    grid-template-columns: 1fr 1fr;
  }
  .page-about__reason-item {
    padding: 1.25rem;
  }
  .page-about__trust-bar {
    padding: 2rem 3rem;
  }
  .page-about__trust-text {
    font-size: 1.1rem;
  }
}

@media (min-width: 1200px) {
  .page-about__console {
    max-width: 380px;
    padding: 2.5rem 2rem;
  }
  .page-about__features {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  .page-about__feature-card {
    padding: 1.5rem;
  }
}