/* ===================================================================
   page-about – 品牌档案
   作用域：.page-about
   移动端优先 + 桌面媒体查询
   =================================================================== */
.page-about {
  --about-glow-color: rgba(240, 192, 64, 0.08);
  --about-card-bg: rgba(43, 15, 76, 0.65);
  --about-card-border: rgba(240, 192, 64, 0.25);
  --about-text-muted: #C8C0D0;

  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--bg-dark, #1A0A2E);
  color: var(--text-light, #FFFFFF);
  font-family: var(--font-body, 'Inter', sans-serif);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-about__breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem 0.6rem;
  padding: 1.2rem 1.5rem 0.4rem;
  font-size: 0.8rem;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  color: var(--mineral-gray, #7A7A7A);
}
.page-about__breadcrumb-link {
  color: var(--primary-gold, #F0C040);
  text-decoration: none;
  transition: opacity var(--transition, 0.3s ease);
}
.page-about__breadcrumb-link:hover {
  opacity: 0.75;
}
.page-about__breadcrumb-sep {
  color: var(--accent-neon, #00D4AA);
  font-size: 0.75rem;
}
.page-about__breadcrumb-current {
  color: var(--text-light, #FFFFFF);
  font-weight: 500;
}

/* ---------- 首屏 ---------- */
.page-about__hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 70vh;
  padding: 3rem 1.5rem;
  background: radial-gradient(ellipse at center, #3A1A5E 0%, #1A0A2E 70%, #0D0418 100%);
  overflow: hidden;
  text-align: center;
}
.page-about__hero-glow {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  z-index: 0;
}
.page-about__hero-glow-img {
  width: min(80vw, 400px);
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 50%;
  opacity: 0.2;
  mix-blend-mode: screen;
  filter: blur(28px) saturate(1.4);
  transform: scale(1.2);
}
.page-about__hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
}
.page-about__hero-crown {
  width: clamp(100px, 40vw, 180px);
  height: auto;
  filter: drop-shadow(0 0 30px rgba(240, 192, 64, 0.35));
  animation: page-about__crown-pulse 4s ease-in-out infinite alternate;
}
@media (prefers-reduced-motion: reduce) {
  .page-about__hero-crown {
    animation: none;
  }
}
@keyframes page-about__crown-pulse {
  0% { transform: scale(1); filter: drop-shadow(0 0 20px rgba(240, 192, 64, 0.25)); }
  100% { transform: scale(1.03); filter: drop-shadow(0 0 40px rgba(240, 192, 64, 0.5)); }
}
.page-about__hero-crown[data-animate="crown"] {
  /* JS 可在此添加旋转等增强动效，无 JS 时静默降级 */
  transition: transform 0.6s cubic-bezier(0.25, 0.1, 0.25, 1);
}
.page-about__hero-title {
  font-family: var(--font-heading, 'Playfair Display', serif);
  font-size: clamp(2.4rem, 10vw, 4.2rem);
  font-weight: 700;
  color: var(--primary-gold, #F0C040);
  letter-spacing: 0.08em;
  text-shadow: 0 0 40px rgba(240, 192, 64, 0.2);
  margin: 0;
  line-height: 1.15;
}
.page-about__hero-subtitle {
  font-size: clamp(0.9rem, 3vw, 1.3rem);
  font-weight: 400;
  color: var(--mineral-cream, #F5F0E8);
  letter-spacing: 0.4em;
  opacity: 0.85;
  margin: 0;
}

/* ---------- 通用 section 标题 ---------- */
.page-about__section-title {
  font-family: var(--font-heading, 'Playfair Display', serif);
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 700;
  color: var(--primary-gold, #F0C040);
  margin: 0 0 1.5rem;
  line-height: 1.2;
  letter-spacing: 0.02em;
  position: relative;
  display: inline-block;
}
.page-about__section-title::after {
  content: '';
  display: block;
  width: 60%;
  height: 3px;
  margin-top: 0.5rem;
  background: linear-gradient(90deg, var(--primary-gold, #F0C040), transparent);
  border-radius: 2px;
}

/* ---------- 品牌理念 ---------- */
.page-about__mission {
  padding: 4rem 1.5rem;
  background: var(--mineral-cream, #F5F0E8);
  color: var(--text-dark, #1A1A1A);
}
.page-about__mission .page-about__section-title {
  color: var(--primary-deep-purple, #2B0F4C);
}
.page-about__mission .page-about__section-title::after {
  background: linear-gradient(90deg, var(--primary-deep-purple, #2B0F4C), transparent);
}
.page-about__mission-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 1120px;
  margin: 0 auto;
}
.page-about__mission-image {
  flex: 0 0 auto;
  display: flex;
  justify-content: center;
}
.page-about__mission-img {
  width: 100%;
  max-width: 500px;
  height: auto;
  aspect-ratio: 500 / 300;
  object-fit: cover;
  border-radius: var(--radius, 16px);
  box-shadow: var(--shadow, 0 8px 24px rgba(0,0,0,0.3));
}
.page-about__mission-text {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  font-size: 1rem;
  line-height: 1.7;
}
.page-about__mission-text p {
  margin: 0;
}
.page-about__mission-text p:first-of-type {
  font-weight: 600;
  font-size: 1.08rem;
}

/* ---------- 平台优势 ---------- */
.page-about__advantages {
  padding: 4rem 1.5rem;
  background: var(--bg-dark, #1A0A2E);
}
.page-about__advantages .page-about__section-title {
  margin-bottom: 2rem;
}
.page-about__advantages-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 1120px;
  margin: 0 auto;
}
.page-about__advantage-card {
  background: var(--about-card-bg);
  border: 1px solid var(--about-card-border);
  border-radius: var(--radius, 16px);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  transition: transform var(--transition, 0.3s ease), box-shadow var(--transition, 0.3s ease);
  backdrop-filter: blur(4px);
}
.page-about__advantage-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
  border-color: var(--primary-gold, #F0C040);
}
.page-about__advantage-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 0.2rem;
}
.page-about__advantage-icon svg {
  width: 100%;
  height: 100%;
}
.page-about__advantage-title {
  font-family: var(--font-heading, 'Playfair Display', serif);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--primary-gold, #F0C040);
  margin: 0;
}
.page-about__advantage-desc {
  font-size: 0.92rem;
  color: var(--about-text-muted);
  line-height: 1.6;
  margin: 0;
}
.page-about__advantage-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-neon, #00D4AA);
  text-decoration: none;
  margin-top: 0.4rem;
  transition: gap var(--transition, 0.3s ease), color var(--transition, 0.3s ease);
}
.page-about__advantage-link:hover {
  gap: 0.6rem;
  color: var(--primary-gold, #F0C040);
}

/* ---------- 联系与位置 ---------- */
.page-about__contact {
  padding: 4rem 1.5rem;
  background: var(--mineral-cream, #F5F0E8);
  color: var(--text-dark, #1A1A1A);
}
.page-about__contact .page-about__section-title {
  color: var(--primary-deep-purple, #2B0F4C);
}
.page-about__contact .page-about__section-title::after {
  background: linear-gradient(90deg, var(--primary-deep-purple, #2B0F4C), transparent);
}
.page-about__contact-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 1120px;
  margin: 0 auto;
}
.page-about__contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
  flex: 1;
}

/* ---- 翻转卡片 ---- */
.page-about__flip-card {
  perspective: 1000px;
  width: 100%;
  max-width: 380px;
  min-height: 180px;
  cursor: default;
}
.page-about__flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 180px;
  transition: transform 0.6s cubic-bezier(0.25, 0.1, 0.25, 1);
  transform-style: preserve-3d;
}
.page-about__flip-card:hover .page-about__flip-card-inner,
.page-about__flip-card:focus-within .page-about__flip-card-inner {
  transform: rotateY(180deg);
}
@media (hover: none) {
  .page-about__flip-card-inner {
    transform: none !important;
  }
  .page-about__flip-card-back {
    display: none;
  }
}
.page-about__flip-card-front,
.page-about__flip-card-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: var(--radius, 16px);
  padding: 1.8rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.8rem;
}
.page-about__flip-card-front {
  background: linear-gradient(135deg, #2B0F4C, #3A1A5E);
  border: 1px solid var(--about-card-border);
  color: var(--text-light, #FFFFFF);
}
.page-about__flip-card-back {
  background: linear-gradient(135deg, #1A0A2E, #2B0F4C);
  border: 1px solid var(--primary-gold, #F0C040);
  color: var(--text-light, #FFFFFF);
  transform: rotateY(180deg);
  align-items: center;
  text-align: center;
}
.page-about__flip-label {
  font-size: 0.75rem;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--primary-gold, #F0C040);
  opacity: 0.8;
}
.page-about__flip-address {
  font-style: normal;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--mineral-cream, #F5F0E8);
}
.page-about__flip-hint {
  font-size: 0.75rem;
  color: var(--mineral-gray, #7A7A7A);
  opacity: 0.7;
}
.page-about__flip-map-placeholder {
  width: 100%;
  max-width: 140px;
}
.page-about__flip-map-placeholder svg {
  width: 100%;
  height: auto;
}

/* ---- 联系方式列表 ---- */
.page-about__contact-details {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.page-about__contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.8rem 1rem;
  background: rgba(43, 15, 76, 0.06);
  border-radius: 12px;
}
.page-about__contact-label {
  font-size: 0.75rem;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary-deep-purple, #2B0F4C);
  opacity: 0.7;
}
.page-about__contact-value {
  font-size: 0.95rem;
  color: var(--text-dark, #1A1A1A);
}
.page-about__contact-value a {
  color: var(--primary-deep-purple, #2B0F4C);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: var(--primary-gold, #F0C040);
  transition: color var(--transition, 0.3s ease);
}
.page-about__contact-value a:hover {
  color: var(--accent-neon, #00D4AA);
}
.page-about__contact-item--note .page-about__contact-value {
  font-size: 0.88rem;
}

/* ---- 联系装饰图 ---- */
.page-about__contact-image {
  display: flex;
  justify-content: center;
  align-items: center;
}
.page-about__contact-img {
  width: min(60vw, 200px);
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(240, 192, 64, 0.1), transparent);
  padding: 0.5rem;
}

/* ===================================================================
   桌面端媒体查询 ( ≥768px )
   =================================================================== */
@media (min-width: 768px) {
  .page-about__breadcrumb {
    padding: 1.5rem 2.5rem 0.6rem;
    font-size: 0.85rem;
  }

  /* 首屏 */
  .page-about__hero {
    min-height: 65vh;
    padding: 4rem 2.5rem;
  }
  .page-about__hero-crown {
    width: 180px;
  }

  /* 品牌理念 — 两列 */
  .page-about__mission {
    padding: 5rem 2.5rem;
  }
  .page-about__mission-content {
    flex-direction: row;
    align-items: center;
    gap: 3rem;
  }
  .page-about__mission-image {
    flex: 1 1 45%;
  }
  .page-about__mission-img {
    max-width: 100%;
  }
  .page-about__mission-text {
    flex: 1 1 50%;
    font-size: 1.05rem;
  }

  /* 平台优势 — 三列网格 */
  .page-about__advantages {
    padding: 5rem 2.5rem;
  }
  .page-about__advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
  .page-about__advantage-card {
    padding: 2.2rem 1.8rem;
  }

  /* 联系与位置 — 两列 */
  .page-about__contact {
    padding: 5rem 2.5rem;
  }
  .page-about__contact-content {
    flex-direction: row;
    align-items: flex-start;
    gap: 3rem;
  }
  .page-about__contact-info {
    flex: 1 1 60%;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 2rem;
  }
  .page-about__flip-card {
    flex: 0 0 280px;
  }
  .page-about__contact-details {
    flex: 1 1 200px;
  }
  .page-about__contact-image {
    flex: 0 0 180px;
    align-self: center;
  }
}

/* 大桌面 ( ≥1024px ) 微调 */
@media (min-width: 1024px) {
  .page-about__mission {
    padding: 6rem 3rem;
  }
  .page-about__advantages {
    padding: 6rem 3rem;
  }
  .page-about__advantages-grid {
    gap: 2.5rem;
  }
  .page-about__contact {
    padding: 6rem 3rem;
  }
  .page-about__flip-card {
    max-width: 360px;
  }
}

/* 极窄屏防护 ( ≤360px ) */
@media (max-width: 360px) {
  .page-about__hero {
    padding: 2rem 1rem;
  }
  .page-about__hero-title {
    font-size: 1.8rem;
  }
  .page-about__mission,
  .page-about__advantages,
  .page-about__contact {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  .page-about__advantage-card {
    padding: 1.2rem 1rem;
  }
  .page-about__flip-card-front,
  .page-about__flip-card-back {
    padding: 1.2rem 1rem;
  }
}