.page-about {
  --about-hero-min-height: 85vh;
  --about-hero-text-gap: 0.25rem;
  --about-mission-mark-size: 6rem;
  --about-icon-size: 5rem;
  --about-card-shadow: 0 8px 32px rgba(0,0,0,0.10);
  --about-card-radius: 12px;
  --about-bubble-min-width: 160px;
  --about-transition-slow: 0.45s cubic-bezier(0.23, 1, 0.32, 1);

  display: block;
  width: 100%;
  background-color: var(--clr-light, #F5F5F5);
  color: var(--clr-text, #1A1A1A);
  font-family: var(--font-body, 'Microsoft YaHei', sans-serif);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ===== 面包屑 ===== */
.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.25rem;
  font-size: 0.8125rem;
  background: var(--clr-dark, #121212);
  color: var(--clr-text-on-dark, #E0E0E0);
  letter-spacing: 0.02em;
  position: relative;
  z-index: 2;
}
.page-about .breadcrumb-link {
  color: var(--clr-accent, #FF4500);
  text-decoration: none;
  transition: color var(--transition, 0.25s ease);
}
.page-about .breadcrumb-link:hover {
  color: var(--clr-accent-light, #FF6347);
  text-decoration: underline;
}
.page-about .breadcrumb-sep {
  color: var(--clr-silver, #C0C0C0);
  font-size: 1.1em;
  line-height: 1;
}
.page-about .breadcrumb-current {
  color: var(--clr-primary, #2E8B57);
  font-weight: 600;
}

/* ===== 首屏 Hero ===== */
.page-about .about-hero {
  position: relative;
  min-height: var(--about-hero-min-height);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--clr-dark, #121212);
}
.page-about .about-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  opacity: 0.55;
  z-index: 0;
}
.page-about .about-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(18,18,18,0.82) 0%, rgba(18,18,18,0.30) 60%, rgba(46,139,87,0.25) 100%);
  z-index: 1;
}
.page-about .about-hero-vertical {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--about-hero-text-gap);
  padding: 2rem 1.25rem;
  text-align: center;
}
.page-about .about-hero-brand {
  font-family: var(--font-head, Impact, sans-serif);
  font-size: clamp(2.8rem, 12vw, 7rem);
  font-weight: 700;
  line-height: 1.05;
  color: var(--clr-primary, #2E8B57);
  text-shadow: 0 0 20px rgba(46,139,87,0.50), 0 4px 12px rgba(0,0,0,0.60);
  margin: 0 0 0.4rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.page-about .about-hero-line {
  display: block;
  font-family: var(--font-head, Impact, sans-serif);
  font-weight: 700;
  line-height: 1.1;
  text-shadow: 0 2px 12px rgba(0,0,0,0.60);
  transition: transform var(--about-transition-slow);
}
.page-about .about-hero-line--1 {
  font-size: clamp(2rem, 7vw, 4.2rem);
  color: var(--clr-accent, #FF4500);
  letter-spacing: 0.06em;
}
.page-about .about-hero-line--2 {
  font-size: clamp(2.4rem, 9vw, 5.4rem);
  color: var(--clr-primary, #2E8B57);
  letter-spacing: 0.04em;
  text-shadow: 0 0 30px rgba(46,139,87,0.40), 0 2px 12px rgba(0,0,0,0.60);
}
.page-about .about-hero-line--3 {
  font-size: clamp(1rem, 3vw, 1.8rem);
  color: var(--clr-silver, #C0C0C0);
  font-weight: 400;
  letter-spacing: 0.3em;
  margin-top: 0.6rem;
  text-transform: uppercase;
}
.page-about .about-hero-sub {
  position: relative;
  z-index: 2;
  margin: 1.2rem 1.25rem 0;
  font-size: clamp(0.95rem, 1.8vw, 1.25rem);
  color: var(--clr-text-on-dark, #E0E0E0);
  text-align: center;
  max-width: 540px;
  font-weight: 400;
  letter-spacing: 0.04em;
  padding: 0.75rem 1.5rem;
  background: rgba(18,18,18,0.60);
  border-left: 4px solid var(--clr-accent, #FF4500);
  border-radius: 0 var(--radius, 4px) var(--radius, 4px) 0;
}

/* ===== 容器 & 通用 ===== */
.page-about .container {
  max-width: var(--container-max, 1200px);
  margin: 0 auto;
  padding: 0 1.25rem;
}
.page-about .section-title {
  font-family: var(--font-head, Impact, sans-serif);
  font-size: clamp(1.8rem, 4.5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 1.5rem;
  color: var(--clr-dark, #121212);
  position: relative;
  display: inline-block;
}
.page-about .section-title::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 60%;
  height: 4px;
  background: linear-gradient(90deg, var(--clr-primary, #2E8B57), var(--clr-accent, #FF4500));
  border-radius: 2px;
}

/* ===== 初心区 ===== */
.page-about .about-mission {
  padding: 3.5rem 0 3rem;
  background: var(--clr-light, #F5F5F5);
}
.page-about .about-mission-inner {
  position: relative;
  max-width: 780px;
  margin: 0 auto;
  padding: 0 1rem;
}
.page-about .about-mission-mark {
  position: absolute;
  top: -1.2rem;
  left: -0.5rem;
  font-size: var(--about-mission-mark-size);
  font-family: var(--font-head, Impact, sans-serif);
  color: var(--clr-primary, #2E8B57);
  opacity: 0.18;
  line-height: 1;
  user-select: none;
  pointer-events: none;
}
.page-about .about-mission-body {
  margin-top: 0.5rem;
}
.page-about .about-mission-text {
  font-size: 1.0625rem;
  line-height: 1.75;
  margin: 0 0 1.2rem;
  color: var(--clr-text, #1A1A1A);
}
.page-about .about-mission-text strong {
  color: var(--clr-primary-dark, #1E6B3F);
  font-weight: 600;
}
.page-about .about-mission-dialect {
  display: inline-block;
  color: var(--clr-accent, #FF4500) !important;
  font-weight: 700 !important;
  font-size: 1.15em;
  padding: 0 0.15em;
}

/* ===== 服务区 ===== */
.page-about .about-services {
  padding: 3rem 0 3.5rem;
  background: var(--clr-dark, #121212);
}
.page-about .about-services .section-title {
  color: var(--clr-text-on-dark, #E0E0E0);
}
.page-about .about-services .section-title::after {
  background: linear-gradient(90deg, var(--clr-accent, #FF4500), var(--clr-silver, #C0C0C0));
}
.page-about .about-services-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: center;
}
.page-about .about-services-visual {
  flex-shrink: 0;
  width: 100%;
  max-width: 380px;
}
.page-about .about-services-img {
  width: 100%;
  height: auto;
  max-width: 380px;
  border-radius: var(--about-card-radius);
  box-shadow: 0 8px 32px rgba(0,0,0,0.40);
  display: block;
  border: 2px solid rgba(192,192,192,0.20);
}
.page-about .about-services-cards {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  width: 100%;
}
.page-about .about-service-card {
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(192,192,192,0.12);
  border-radius: var(--about-card-radius);
  padding: 1.5rem 1.5rem 1.75rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: transform var(--about-transition-slow), box-shadow var(--about-transition-slow), border-color var(--about-transition-slow);
  box-shadow: var(--about-card-shadow);
  transform: perspective(800px) rotateY(0deg);
  will-change: transform;
}
.page-about .about-service-card:hover,
.page-about .about-service-card:focus-within {
  transform: perspective(800px) rotateY(-4deg) translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.35);
  border-color: var(--clr-primary, #2E8B57);
}
.page-about .about-service-card[data-service="schedule"]:hover,
.page-about .about-service-card[data-service="schedule"]:focus-within {
  border-color: var(--clr-accent, #FF4500);
}
.page-about .about-service-card[data-service="replay"]:hover,
.page-about .about-service-card[data-service="replay"]:focus-within {
  border-color: var(--clr-silver, #C0C0C0);
}
.page-about .about-service-icon {
  width: var(--about-icon-size);
  height: var(--about-icon-size);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--clr-primary, #2E8B57) 0%, var(--clr-primary-dark, #1E6B3F) 100%);
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
  margin-bottom: 1rem;
  flex-shrink: 0;
  transition: transform var(--about-transition-slow);
}
.page-about .about-service-card:hover .about-service-icon {
  transform: scale(1.08) rotate(8deg);
}
.page-about .about-service-icon-num {
  font-family: var(--font-head, Impact, sans-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--clr-text-on-green, #FFFFFF);
  text-shadow: 0 1px 4px rgba(0,0,0,0.30);
}
.page-about .about-service-title {
  font-family: var(--font-head, Impact, sans-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--clr-text-on-dark, #E0E0E0);
  margin: 0 0 0.5rem;
  letter-spacing: 0.02em;
}
.page-about .about-service-desc {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: rgba(224,224,224,0.80);
  margin: 0 0 1.2rem;
  flex: 1;
}
.page-about .about-service-desc strong {
  color: var(--clr-primary, #2E8B57);
  font-weight: 600;
}
.page-about .about-service-highlight {
  color: var(--clr-accent, #FF4500) !important;
  font-weight: 700 !important;
}
.page-about .about-service-card .btn {
  align-self: flex-start;
  font-family: var(--font-body, 'Microsoft YaHei', sans-serif);
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 0.6rem 1.6rem;
  border: none;
  border-radius: var(--radius, 4px);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: background var(--transition, 0.25s ease), transform var(--transition, 0.25s ease);
}
.page-about .about-service-card .btn-primary {
  background: var(--clr-primary, #2E8B57);
  color: var(--clr-text-on-green, #FFFFFF);
}
.page-about .about-service-card .btn-primary:hover {
  background: var(--clr-primary-dark, #1E6B3F);
  transform: translateY(-2px);
}
.page-about .about-service-card .btn-primary:active {
  transform: translateY(0);
}

/* ===== 方言区 ===== */
.page-about .about-dialect {
  padding: 3rem 0 3.5rem;
  background: var(--clr-light, #F5F5F5);
}
.page-about .about-dialect-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  align-items: center;
}
.page-about .about-dialect-bubbles {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  width: 100%;
}
.page-about .dialect-bubble {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  min-width: var(--about-bubble-min-width);
  padding: 1rem 1.25rem 0.85rem;
  background: var(--clr-dark, #121212);
  border-radius: 20px 20px 20px 4px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  cursor: pointer;
  position: relative;
  transition: transform var(--transition, 0.25s ease), box-shadow var(--transition, 0.25s ease);
  user-select: none;
}
.page-about .dialect-bubble:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 12px 36px rgba(0,0,0,0.18);
}
.page-about .dialect-bubble:focus-visible {
  outline: 3px solid var(--clr-accent, #FF4500);
  outline-offset: 4px;
}
.page-about .dialect-bubble-word {
  font-family: var(--font-head, Impact, sans-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--clr-primary, #2E8B57);
  line-height: 1.2;
}
.page-about .dialect-bubble:nth-child(2) .dialect-bubble-word { color: var(--clr-accent, #FF4500); }
.page-about .dialect-bubble:nth-child(3) .dialect-bubble-word { color: var(--clr-silver, #C0C0C0); }
.page-about .dialect-bubble:nth-child(4) .dialect-bubble-word { color: var(--clr-accent-light, #FF6347); }
.page-about .dialect-bubble-meaning {
  font-size: 0.8125rem;
  color: rgba(224,224,224,0.60);
  font-weight: 400;
}
.page-about .dialect-bubble-sound {
  position: absolute;
  top: -6px;
  right: -6px;
  width: 24px;
  height: 24px;
  background: var(--clr-accent, #FF4500);
  color: #fff;
  font-size: 0.75rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(255,69,0,0.40);
  opacity: 0;
  transform: scale(0.5);
  transition: opacity var(--transition, 0.25s ease), transform var(--transition, 0.25s ease);
}
.page-about .dialect-bubble:hover .dialect-bubble-sound {
  opacity: 1;
  transform: scale(1);
}
.page-about .about-dialect-visual {
  flex-shrink: 0;
  width: 100%;
  max-width: 340px;
}
.page-about .about-dialect-img {
  width: 100%;
  height: auto;
  max-width: 340px;
  border-radius: var(--about-card-radius);
  box-shadow: 0 8px 28px rgba(0,0,0,0.12);
  display: block;
  border: 2px solid var(--clr-primary, #2E8B57);
}
.page-about .about-dialect-footer {
  margin: 2rem auto 0;
  max-width: 600px;
  text-align: center;
  font-size: 0.9375rem;
  color: var(--clr-text, #1A1A1A);
  background: rgba(46,139,87,0.08);
  padding: 0.8rem 1.5rem;
  border-radius: var(--radius, 4px);
  border-left: 4px solid var(--clr-primary, #2E8B57);
  line-height: 1.6;
}

/* ===== 桌面端查询 ===== */
@media (min-width: 768px) {
  .page-about .breadcrumb {
    padding: 1rem 2rem;
    font-size: 0.875rem;
  }
  .page-about .about-hero-vertical {
    gap: 0.35rem;
    padding: 3rem 2rem;
  }
  .page-about .about-hero-sub {
    margin-top: 1.8rem;
    font-size: 1.2rem;
    padding: 0.85rem 2rem;
  }
  .page-about .about-mission {
    padding: 4.5rem 0 4rem;
  }
  .page-about .about-mission-inner {
    padding: 0 2rem;
  }
  .page-about .about-mission-mark {
    left: -1.2rem;
    top: -1.8rem;
  }
  .page-about .about-mission-text {
    font-size: 1.125rem;
  }
  .page-about .about-services {
    padding: 4rem 0 4.5rem;
  }
  .page-about .about-services-layout {
    flex-direction: row;
    align-items: flex-start;
    gap: 2.5rem;
  }
  .page-about .about-services-visual {
    max-width: 320px;
    flex-shrink: 0;
    position: sticky;
    top: 6rem;
  }
  .page-about .about-services-img {
    max-width: 320px;
  }
  .page-about .about-services-cards {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
  }
  .page-about .about-service-card {
    padding: 1.5rem 1.25rem 1.5rem;
  }
  .page-about .about-service-card:last-child {
    grid-column: 1 / -1;
    max-width: 60%;
    margin: 0 auto;
  }
  .page-about .about-service-title {
    font-size: 1.2rem;
  }
  .page-about .about-dialect {
    padding: 4rem 0 4.5rem;
  }
  .page-about .about-dialect-layout {
    flex-direction: row;
    align-items: center;
    gap: 2.5rem;
  }
  .page-about .about-dialect-bubbles {
    flex: 1;
    justify-content: flex-start;
    order: 1;
  }
  .page-about .about-dialect-visual {
    max-width: 300px;
    order: 2;
  }
  .page-about .about-dialect-img {
    max-width: 300px;
  }
  .page-about .dialect-bubble {
    min-width: 140px;
  }
  .page-about .about-dialect-footer {
    font-size: 1rem;
    padding: 1rem 2rem;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero-vertical {
    gap: 0.5rem;
  }
  .page-about .about-services-visual {
    max-width: 380px;
  }
  .page-about .about-services-img {
    max-width: 380px;
  }
  .page-about .about-services-cards {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.5rem;
  }
  .page-about .about-service-card:last-child {
    grid-column: auto;
    max-width: 100%;
    margin: 0;
  }
  .page-about .about-dialect-visual {
    max-width: 340px;
  }
  .page-about .about-dialect-img {
    max-width: 340px;
  }
  .page-about .dialect-bubble {
    min-width: 160px;
    padding: 1.25rem 1.5rem 1rem;
  }
}

/* ===== 容器内边距微调（桌面） ===== */
@media (min-width: 1200px) {
  .page-about .container {
    padding: 0 2rem;
  }
  .page-about .about-hero-sub {
    max-width: 640px;
  }
}