/* ========== 品牌概况页 /profile/ ========== */
.page-about {
  background: var(--c-cream);
  color: var(--c-charcoal);
  font-family: var(--font-body);
  line-height: 1.75;
}

/* ---- 左右双栏骨架 ---- */
.page-about .about-stage {
  display: block;
}

.page-about .about-stage-side {
  position: relative;
  background:
    radial-gradient(circle at 88% 14%, rgba(201, 162, 39, 0.30) 0, transparent 42%),
    linear-gradient(160deg, var(--c-brown) 0%, #2b1c17 100%);
  color: var(--c-ivory);
  padding: 1.75rem 1.5rem 2.5rem;
  overflow: hidden;
}

.page-about .about-stage-side::after {
  content: "";
  position: absolute;
  right: -3.75rem;
  bottom: -3.75rem;
  width: 11rem;
  height: 11rem;
  border: 1px solid rgba(201, 162, 39, 0.35);
  transform: rotate(45deg);
  pointer-events: none;
}

.page-about .about-stage-main {
  padding: 1.75rem 1.25rem 3.5rem;
}

/* ---- 面包屑 ---- */
.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 2rem;
  font-size: 0.8rem;
}

.page-about .breadcrumb-link {
  color: var(--c-light-gold);
  text-decoration: none;
}

.page-about .breadcrumb-link:hover {
  color: var(--c-gold);
}

.page-about .breadcrumb-sep {
  color: rgba(255, 248, 231, 0.4);
}

.page-about .breadcrumb-current {
  color: var(--c-ivory);
  font-weight: 500;
}

/* ---- 侧栏品牌排版 ---- */
.page-about .about-eyebrow {
  color: var(--c-gold);
  letter-spacing: 0.12em;
  margin-bottom: 0.4rem;
}

.page-about .about-h1 {
  margin: 0.5rem 0 0.6rem;
}

.page-about .about-h1-main {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.75rem, 7vw, 5rem);
  line-height: 1.05;
  color: var(--c-ivory);
  letter-spacing: 0.02em;
}

.page-about .about-h1-sub {
  display: block;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: clamp(0.9rem, 1.4vw, 1.05rem);
  line-height: 1.6;
  color: var(--c-light-gold);
  margin-top: 0.6rem;
}

.page-about .about-slogan {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.24em;
  color: var(--c-gold);
  border-bottom: 1px solid rgba(201, 162, 39, 0.55);
  padding-bottom: 0.3rem;
  margin: 1.1rem 0 0.8rem;
}

.page-about .about-desc {
  max-width: 36ch;
  color: rgba(255, 248, 231, 0.82);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-top: 0.4rem;
}

.page-about .about-side-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  color: var(--c-ivory);
  text-decoration: none;
  border: 1px solid rgba(201, 162, 39, 0.55);
  padding: 0.65rem 1.1rem;
  font-size: 0.9rem;
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.page-about .about-side-link:hover {
  background: var(--c-gold);
  border-color: var(--c-gold);
  color: var(--c-brown);
}

/* ---- 铜钱装饰 ---- */
.page-about .about-coin {
  position: absolute;
  color: var(--c-gold);
  opacity: 0.2;
  pointer-events: none;
}

.page-about .about-coin--one {
  top: 6rem;
  right: -1.25rem;
  width: 5rem;
  height: 5rem;
}

.page-about .about-coin--two {
  bottom: 4rem;
  left: -1.25rem;
  width: 3.25rem;
  height: 3.25rem;
}

/* ---- 页内目录 ---- */
.page-about .about-toc {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--c-light-gold);
}

.page-about .about-toc-caption {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--c-deep-gold);
  margin-right: 0.3rem;
}

.page-about .about-toc-link {
  font-size: 0.82rem;
  color: var(--c-brown);
  text-decoration: none;
  border: 1px solid var(--c-light-gold);
  padding: 0.35rem 0.7rem;
  background: transparent;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-toc-link:hover,
.page-about .about-toc-link[data-active] {
  background: var(--c-gold);
  color: var(--c-ivory);
  border-color: var(--c-gold);
}

/* ---- 主视觉图 ---- */
.page-about .about-hero-figure {
  margin: 0 0 2.5rem;
  border: 1px solid var(--c-light-gold);
  background: var(--c-ivory);
  padding: 0.5rem;
}

.page-about .about-hero-img,
.page-about .about-journey-img,
.page-about .about-trust-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---- 章节通用 ---- */
.page-about .about-section {
  margin-bottom: 3.5rem;
}

.page-about .about-section-head {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.page-about .about-section-head .chapter-number {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--c-gold);
  letter-spacing: 0.05em;
}

.page-about .about-section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.7rem, 2.6vw, 2.4rem);
  line-height: 1.2;
  color: var(--c-brown);
  margin: 0;
}

.page-about .about-para {
  max-width: 65ch;
  margin: 0 0 0.9rem;
  line-height: 1.9;
}

/* ---- 关键数据 ---- */
.page-about .about-data {
  background: var(--c-ivory);
  border: 1px solid var(--c-light-gold);
  border-top: 4px solid var(--c-gold);
  padding: 1.5rem 1.25rem 1.75rem;
}

.page-about .about-data-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.875rem;
}

.page-about .about-data-cell {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.75rem 0.25rem;
}

.page-about .about-data-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.2rem, 3vw, 3rem);
  line-height: 1;
  color: var(--c-deep-gold);
}

.page-about .about-data-unit {
  font-size: 1rem;
  margin-left: 0.2rem;
  color: var(--c-deep-gold);
}

.page-about .about-data-label {
  font-weight: 500;
  color: var(--c-brown);
}

.page-about .about-data-note {
  font-size: 0.8rem;
  color: var(--c-deep-gold);
}

.page-about .about-data-tip {
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--c-light-gold);
  font-size: 0.85rem;
  color: var(--c-brown);
}

/* ---- 发展脉络 ---- */
.page-about .about-journey-figure {
  margin: 1.5rem 0 2rem;
  border: 1px solid var(--c-light-gold);
  background: var(--c-ivory);
  padding: 0.5rem;
}

.page-about .about-timeline {
  position: relative;
  margin-top: 2rem;
  padding-left: 2.25rem;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 0.375rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-gold) 0%, var(--c-light-gold) 100%);
}

.page-about .about-timeline-item {
  position: relative;
  margin-bottom: 1.75rem;
}

.page-about .about-timeline-dot {
  position: absolute;
  left: -2.25rem;
  top: 0.35rem;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--c-cream);
  border: 2px solid var(--c-gold);
}

.page-about .about-timeline-card {
  transition: background 0.25s ease, border-color 0.25s ease, padding 0.25s ease;
}

.page-about .about-timeline-year {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--c-gold);
  letter-spacing: 0.06em;
  margin-bottom: 0.3rem;
}

.page-about .about-timeline-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--c-brown);
  margin: 0 0 0.35rem;
}

.page-about .about-timeline-card p {
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--c-charcoal);
  margin: 0;
  max-width: 60ch;
}

.page-about .about-timeline-item:hover .about-timeline-card {
  background: var(--c-ivory);
  border-left: 2px solid var(--c-gold);
  padding-left: 1rem;
}

/* ---- 会员适配明细体系 ---- */
.page-about .about-membership-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.875rem;
  margin-top: 1.5rem;
}

.page-about .about-feature-card {
  background: var(--c-ivory);
  border: 1px solid var(--c-light-gold);
  border-top: 3px solid var(--c-light-gold);
  padding: 1.5rem;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-about .about-feature-card:hover {
  transform: translateY(-3px);
  border-color: var(--c-gold);
  box-shadow: 0 12px 28px rgba(62, 39, 35, 0.07);
}

.page-about .about-feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--c-brown);
  margin: 0 0 0.4rem;
}

.page-about .about-feature-card p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--c-charcoal);
  margin: 0;
}

/* ---- 合作与资质 ---- */
.page-about .about-trust-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 1.75rem;
}

.page-about .about-trust-figure {
  margin: 0;
  border: 1px solid var(--c-light-gold);
  background: var(--c-ivory);
  padding: 0.5rem;
}

.page-about .about-trust-cells {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.875rem;
}

.page-about .about-trust-cell {
  background: var(--c-ivory);
  border-top: 2px solid var(--c-gold);
  padding: 1.25rem 1rem;
  transition: background 0.25s ease, box-shadow 0.25s ease;
}

.page-about .about-trust-cell:hover {
  background: var(--c-cream);
  box-shadow: 0 8px 20px rgba(62, 39, 35, 0.06);
}

.page-about .about-trust-num,
.page-about .about-trust-icon {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2rem;
  line-height: 1;
  color: var(--c-deep-gold);
  margin-bottom: 0.5rem;
}

.page-about .about-trust-icon {
  display: inline-block;
  font-size: 1rem;
  letter-spacing: 0.08em;
  border: 1px solid var(--c-gold);
  padding: 0.4rem 0.6rem;
}

.page-about .about-trust-name {
  font-weight: 500;
  color: var(--c-brown);
  margin: 0 0 0.35rem;
}

.page-about .about-trust-desc {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--c-charcoal);
  margin: 0;
}

.page-about .about-trust-note {
  max-width: 65ch;
  margin-top: 2rem;
  padding-left: 0.85rem;
  border-left: 3px solid var(--c-gold);
  font-size: 0.85rem;
  color: var(--c-deep-gold);
}

.page-about .about-trust-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

/* ---- 平板增强：数据条、会员卡两列 ---- */
@media (min-width: 768px) {
  .page-about .about-stage-main {
    padding: 2.5rem 2.5rem 4.5rem;
  }

  .page-about .about-data-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--c-light-gold);
    border: 1px solid var(--c-light-gold);
  }

  .page-about .about-data-cell {
    background: var(--c-ivory);
    padding: 1.4rem 1.25rem;
  }

  .page-about .about-membership-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .page-about .about-trust-cells {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
}

/* ---- 桌面：左侧固定品牌墙 ---- */
@media (min-width: 1024px) {
  .page-about .about-stage {
    display: grid;
    grid-template-columns: minmax(380px, 42vw) 1fr;
    align-items: stretch;
  }

  .page-about .about-stage-side {
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 3rem;
    overflow-y: auto;
  }

  .page-about .about-stage-main {
    padding: 3rem clamp(2.25rem, 4vw, 4.5rem) 5rem;
  }

  .page-about .about-data-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-coin--one {
    top: 7rem;
  }
}

/* ---- 大屏桌面：证书网格强化 ---- */
@media (min-width: 1200px) {
  .page-about .about-trust-grid {
    grid-template-columns: minmax(260px, 340px) 1fr;
    align-items: center;
  }
}