/* ===== 品牌概况页专属样式 ===== */
.page-about {
  --hero-glow: rgba(255, 69, 0, 0.15);
  --card-tip-bg: rgba(10, 10, 10, 0.92);
  --accent-stripe: linear-gradient(135deg, var(--color-gold-bright), var(--color-fire));
  display: flex;
  flex-direction: column;
  gap: 0;
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  padding-bottom: var(--space-3xl);
  font-family: var(--font-body);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-md) var(--space-lg) 0;
  font-size: var(--size-small);
  color: var(--color-text-muted);
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}
.page-about .breadcrumb a {
  color: var(--color-gold-dark);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-about .breadcrumb a:hover {
  color: var(--color-gold-bright);
}
.page-about .breadcrumb-chevron {
  flex-shrink: 0;
  color: var(--color-gold-dark);
  opacity: 0.6;
}
.page-about .breadcrumb span {
  color: var(--color-text-secondary);
  font-weight: var(--fw-bold);
}

/* ---------- 英雄首屏 ---------- */
.page-about .hero {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl) var(--space-lg) var(--space-3xl);
  text-align: center;
  overflow: hidden;
  min-height: 60vh;
}
.page-about .hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
  max-width: 720px;
}
.page-about .hero-emblem {
  width: 80px;
  height: 80px;
  object-fit: contain;
  filter: drop-shadow(0 0 20px var(--hero-glow)) drop-shadow(0 0 40px rgba(184, 134, 11, 0.25));
  animation: emblem-pulse 3s ease-in-out infinite alternate;
}
@keyframes emblem-pulse {
  0% { filter: drop-shadow(0 0 20px var(--hero-glow)) drop-shadow(0 0 40px rgba(184, 134, 11, 0.2)); transform: scale(1); }
  100% { filter: drop-shadow(0 0 35px rgba(255, 69, 0, 0.3)) drop-shadow(0 0 60px rgba(255, 215, 0, 0.15)); transform: scale(1.03); }
}
.page-about .hero-title {
  font-family: var(--font-heading);
  font-weight: var(--fw-heading);
  font-size: clamp(2.8rem, 8vw, 5rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  background: var(--accent-stripe);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 60px var(--hero-glow);
  margin: 0;
}
.page-about .hero-subtitle {
  font-size: var(--size-h3);
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0;
  font-weight: var(--fw-body);
  letter-spacing: 0.02em;
}
.page-about .hero-cta {
  margin-top: var(--space-sm);
  font-size: var(--size-body);
  padding: var(--space-sm) var(--space-xl);
}
.page-about .hero-particles {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}
.page-about .particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--color-gold-bright);
  border-radius: 50%;
  opacity: 0.3;
  animation: particle-drift 6s ease-in-out infinite alternate;
}
.page-about .particle:nth-child(1) { top: 15%; left: 10%; animation-delay: 0s; animation-duration: 7s; }
.page-about .particle:nth-child(2) { top: 60%; right: 15%; animation-delay: 1.5s; animation-duration: 5s; width: 6px; height: 6px; background: var(--color-fire); }
.page-about .particle:nth-child(3) { bottom: 20%; left: 30%; animation-delay: 3s; animation-duration: 8s; width: 3px; height: 3px; background: var(--color-gold-dark); }
@keyframes particle-drift {
  0% { transform: translate(0, 0) scale(1); opacity: 0.2; }
  50% { opacity: 0.6; }
  100% { transform: translate(40px, -30px) scale(1.4); opacity: 0.1; }
}

/* ---------- 通用章节标题 ---------- */
.page-about .section-title {
  font-family: var(--font-heading);
  font-weight: var(--fw-heading);
  font-size: var(--size-h2);
  color: var(--color-gold-bright);
  margin: 0 0 var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  position: relative;
}
.page-about .section-title .title-accent {
  display: inline-block;
  width: 6px;
  height: 32px;
  background: var(--accent-stripe);
  clip-path: polygon(0 0, 100% 2px, 100% calc(100% - 2px), 0 100%);
  flex-shrink: 0;
}
.page-about .section-title--center {
  justify-content: center;
  text-align: center;
}
.page-about .section-title--center .title-accent {
  display: none;
}

/* ---------- 分隔线 ---------- */
.page-about .section-divider {
  padding: var(--space-lg) 0;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
}
.page-about .section-divider svg {
  display: block;
  height: 32px;
}

/* ---------- "我们做什么" ---------- */
.page-about .section-do {
  padding: var(--space-2xl) var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}
.page-about .section-do-inner {
  display: flex;
  flex-direction: column;
}
.page-about .do-layout {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}
.page-about .do-textual {
  position: relative;
  display: flex;
  align-items: center;
  padding: var(--space-lg);
  background: var(--color-bg-card);
  border-radius: var(--radius-cut);
  clip-path: var(--clip-cut);
  min-height: 240px;
  overflow: hidden;
}
.page-about .do-textual-bg-wrap {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.12;
  overflow: hidden;
}
.page-about .do-textual-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.page-about .do-textual-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.page-about .do-textual-content p {
  margin: 0;
  font-size: var(--size-body);
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 640px;
}
.page-about .do-cards {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}
.page-about .do-cards .card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-lg);
  background: var(--color-gray-deep);
  border: 1px solid rgba(184, 134, 11, 0.25);
  border-radius: var(--radius-cut);
  clip-path: var(--clip-cut);
  transition: transform var(--transition-med), border-color var(--transition-med), box-shadow var(--transition-med);
  cursor: default;
}
.page-about .do-cards .card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 215, 0, 0.45);
  box-shadow: 0 8px 32px rgba(184, 134, 11, 0.12), 0 0 0 1px rgba(255, 215, 0, 0.08);
}
.page-about .card-icon {
  width: 52px;
  height: 52px;
  object-fit: contain;
  margin-bottom: var(--space-xs);
  filter: drop-shadow(0 0 8px rgba(255, 215, 0, 0.15));
}
.page-about .card-heading {
  font-family: var(--font-heading);
  font-weight: var(--fw-heading);
  font-size: var(--size-h3);
  color: var(--color-gold-bright);
  margin: 0;
}
.page-about .card-desc {
  margin: 0;
  font-size: var(--size-small);
  color: var(--color-text-secondary);
  line-height: 1.6;
}
/* 卡片悬停提示 */
.page-about .do-cards .card[data-tip]::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) scale(0.92);
  background: var(--card-tip-bg);
  color: var(--color-gold-bright);
  font-size: var(--size-small);
  font-weight: var(--fw-bold);
  padding: var(--space-xs) var(--space-md);
  border-radius: 4px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-med), transform var(--transition-med);
  border: 1px solid rgba(255, 215, 0, 0.2);
  z-index: 10;
}
.page-about .do-cards .card[data-tip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

/* ---------- "为什么选择火博" ---------- */
.page-about .section-why {
  padding: var(--space-2xl) var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
}
.page-about .section-why-inner {
  display: flex;
  flex-direction: column;
}
.page-about .why-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}
.page-about .why-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-lg);
  background: var(--color-gray-deep);
  border-left: 3px solid var(--color-gold-dark);
  border-radius: 0 var(--radius-cut) var(--radius-cut) 0;
  transition: border-color var(--transition-med), background var(--transition-med);
}
.page-about .why-item:hover {
  border-left-color: var(--color-fire);
  background: var(--color-bg-card);
}
.page-about .why-marker {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  margin-bottom: var(--space-xs);
}
.page-about .why-marker svg {
  display: block;
  width: 100%;
  height: 100%;
  animation: marker-pulse 2.5s ease-in-out infinite alternate;
}
@keyframes marker-pulse {
  0% { opacity: 0.7; transform: scale(1); }
  100% { opacity: 1; transform: scale(1.08); }
}
.page-about .why-heading {
  font-family: var(--font-heading);
  font-weight: var(--fw-heading);
  font-size: var(--size-h3);
  color: var(--color-white);
  margin: 0;
}
.page-about .why-desc {
  margin: 0;
  font-size: var(--size-body);
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* ---------- "品牌承诺" ---------- */
.page-about .section-commit {
  padding: var(--space-3xl) var(--space-lg) var(--space-xl);
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  box-sizing: border-box;
  text-align: center;
}
.page-about .section-commit-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xl);
}
.page-about .commit-content {
  max-width: 680px;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.page-about .commit-content p {
  margin: 0;
  font-size: var(--size-body);
  color: var(--color-text-secondary);
  line-height: 1.7;
}
.page-about .commit-trust {
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg-card);
  border: 1px solid rgba(184, 134, 11, 0.2);
  border-radius: var(--radius-cut);
  font-style: italic;
  color: var(--color-gold-dark) !important;
  font-size: var(--size-small) !important;
}
.page-about .commit-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
}

/* ---------- 按钮变体（作用域内） ---------- */
.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: var(--fw-bold);
  font-size: var(--size-body);
  padding: var(--space-sm) var(--space-lg);
  border: none;
  border-radius: var(--radius-cut);
  clip-path: var(--clip-cut);
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  line-height: 1.4;
}
.page-about .btn:hover {
  transform: translateY(-2px);
}
.page-about .btn-primary {
  background: var(--color-gold-bright);
  color: var(--color-bg);
}
.page-about .btn-primary:hover {
  box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
}
.page-about .btn-accent {
  background: var(--color-fire);
  color: var(--color-white);
}
.page-about .btn-accent:hover {
  box-shadow: 0 4px 20px rgba(255, 69, 0, 0.35);
}

/* ===== 桌面端 >=1024px ===== */
@media (min-width: 1024px) {
  .page-about .hero {
    min-height: 70vh;
    padding: var(--space-3xl) var(--space-2xl) var(--space-3xl);
  }
  .page-about .hero-emblem {
    width: 100px;
    height: 100px;
  }
  .page-about .hero-title {
    font-size: clamp(4rem, 7vw, 6rem);
  }
  .page-about .hero-subtitle {
    font-size: var(--size-h2);
  }

  .page-about .do-layout {
    flex-direction: row;
    align-items: stretch;
    gap: var(--space-2xl);
  }
  .page-about .do-textual {
    flex: 1 1 48%;
    min-height: 320px;
    padding: var(--space-xl);
  }
  .page-about .do-textual-content p {
    font-size: 1.05rem;
  }
  .page-about .do-cards {
    flex: 1 1 48%;
    flex-direction: row;
    gap: var(--space-md);
  }
  .page-about .do-cards .card {
    flex: 1;
    justify-content: flex-start;
    padding: var(--space-lg) var(--space-md);
  }
  .page-about .card-icon {
    width: 56px;
    height: 56px;
  }

  .page-about .why-grid {
    flex-direction: row;
    gap: var(--space-xl);
  }
  .page-about .why-item {
    flex: 1;
    padding: var(--space-xl) var(--space-lg);
  }

  .page-about .section-commit {
    padding: var(--space-3xl) var(--space-2xl) var(--space-2xl);
  }
  .page-about .commit-content {
    max-width: 760px;
  }
}

/* ===== 超窄屏保险 ===== */
@media (max-width: 420px) {
  .page-about .hero {
    padding: var(--space-xl) var(--space-md) var(--space-2xl);
    min-height: 50vh;
  }
  .page-about .hero-title {
    font-size: 2.2rem;
  }
  .page-about .do-textual {
    padding: var(--space-md);
  }
  .page-about .do-cards .card {
    padding: var(--space-md);
  }
  .page-about .card-icon {
    width: 44px;
    height: 44px;
  }
  .page-about .why-item {
    padding: var(--space-md);
  }
  .page-about .commit-trust {
    padding: var(--space-sm) var(--space-md);
  }
}