/* ===== 品牌总览页 · page-about ===== */

.page-about {
  --about-surface: var(--ink-panel);
  --about-hairline: rgba(56, 73, 92, 0.55);
  --about-c1: #2FE0D0;
  --about-c2: #FF7A29;
  --about-c3: #9BF2EA;
  --about-c4: #3DD68C;
}

/* --- 面包屑 --- */
.page-about .breadcrumb {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 20px var(--gutter) 0;
  font-size: var(--fs-14);
  color: var(--muted);
}
.page-about .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.page-about .breadcrumb li + li::before {
  content: "/";
  color: var(--line);
}
.page-about .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}
.page-about .breadcrumb [aria-current="page"] {
  color: var(--paper);
}

/* --- 首屏 --- */
.page-about .about-hero {
  padding-top: clamp(22px, 3.6vw, 44px);
  padding-bottom: clamp(28px, 4vw, 52px);
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-size: var(--fs-44);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--paper);
  margin: 14px 0 18px;
  max-width: 24ch;
}

.page-about .about-hero .lede {
  max-width: 62ch;
  color: var(--paper);
}

.page-about .about-hero-media {
  margin-top: clamp(22px, 3.4vw, 38px);
  border: 1px solid var(--about-hairline);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-deep);
  box-shadow: var(--shadow-panel);
}
.page-about .about-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* --- 等宽统计条 --- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(112px, 1fr));
  gap: 1px;
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  background: var(--about-hairline);
  border: 1px solid var(--about-hairline);
  border-radius: var(--radius);
  overflow: hidden;
}
.page-about .about-stats li {
  background: var(--about-surface);
  padding: 15px 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.page-about .about-stat-num {
  font-family: var(--font-mono);
  font-size: var(--fs-30);
  font-weight: 600;
  line-height: 1.05;
  color: var(--cyan);
  letter-spacing: -0.01em;
}
.page-about .about-stat-label {
  font-size: var(--fs-12);
  color: var(--muted);
  letter-spacing: 0.02em;
}

/* --- 通用章节 --- */
.page-about .about-section {
  padding-top: clamp(34px, 5vw, 60px);
  padding-bottom: clamp(34px, 5vw, 60px);
}
.page-about .about-section + .about-section {
  border-top: 1px solid var(--about-hairline);
}

.page-about h2 {
  font-family: var(--font-display);
  font-size: var(--fs-30);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 6px 0 0;
}

/* --- 横向历程刻度带 --- */
.page-about .about-timeline {
  display: flex;
  gap: 0;
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0 0 16px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}
.page-about .about-timeline::-webkit-scrollbar {
  height: 6px;
}
.page-about .about-timeline::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 999px;
}

.page-about .about-tl-node {
  position: relative;
  flex: 0 0 min(76vw, 262px);
  padding: 28px 24px 0 0;
  border-top: 1px solid var(--about-hairline);
  scroll-snap-align: start;
}
.page-about .about-tl-node::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--about-c1);
  box-shadow: 0 0 0 4px rgba(47, 224, 208, 0.14);
}
.page-about .about-tl-node:last-child::before {
  background: var(--about-c2);
  box-shadow: 0 0 0 4px rgba(255, 122, 41, 0.16);
}
.page-about .about-tl-mark {
  display: block;
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 10px;
}
.page-about .about-tl-node:last-child .about-tl-mark {
  color: var(--orange);
}
.page-about .about-tl-node h3 {
  font-size: var(--fs-17);
  font-weight: 700;
  color: var(--paper);
  margin: 0 0 8px;
  line-height: 1.4;
}
.page-about .about-tl-node p {
  font-size: var(--fs-14);
  line-height: 1.72;
  color: var(--muted);
  margin: 0;
  max-width: 34ch;
}

/* --- 四大内容板块 --- */
.page-about .about-blocks {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 20px);
  margin-top: clamp(22px, 3vw, 32px);
}
.page-about .about-block {
  position: relative;
  background: var(--about-surface);
  border: 1px solid var(--about-hairline);
  border-radius: var(--radius);
  padding: clamp(20px, 2.4vw, 26px);
  box-shadow: var(--shadow-panel);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.page-about .about-block-num {
  position: absolute;
  top: 10px;
  right: 14px;
  font-size: 42px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  pointer-events: none;
  user-select: none;
}
.page-about .about-block--a .about-block-num { color: rgba(47, 224, 208, 0.20); }
.page-about .about-block--b .about-block-num { color: rgba(255, 122, 41, 0.20); }
.page-about .about-block--c .about-block-num { color: rgba(155, 242, 234, 0.18); }
.page-about .about-block--d .about-block-num { color: rgba(61, 214, 140, 0.18); }

.page-about .about-block--a:hover { border-color: var(--about-c1); box-shadow: var(--shadow-hover); }
.page-about .about-block--b:hover { border-color: var(--about-c2); box-shadow: var(--shadow-hover); }
.page-about .about-block--c:hover { border-color: var(--about-c3); box-shadow: var(--shadow-hover); }
.page-about .about-block--d:hover { border-color: var(--about-c4); box-shadow: var(--shadow-hover); }

.page-about .about-block h3 {
  position: relative;
  font-size: var(--fs-22);
  font-weight: 700;
  color: var(--paper);
  margin: 0 0 12px;
  padding-left: 14px;
  line-height: 1.3;
}
.page-about .about-block h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  border-radius: 2px;
  background: currentColor;
}
.page-about .about-block--a h3 { color: var(--about-c1); }
.page-about .about-block--b h3 { color: var(--about-c2); }
.page-about .about-block--c h3 { color: var(--about-c3); }
.page-about .about-block--d h3 { color: var(--about-c4); }

.page-about .about-block p {
  font-size: var(--fs-17);
  line-height: 1.75;
  color: var(--paper);
  margin: 0;
  max-width: 52ch;
}
.page-about .about-block-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--about-hairline);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.page-about .about-block-list li {
  position: relative;
  padding-left: 16px;
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--muted);
}
.page-about .about-block-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 1px;
  background: var(--muted);
}

/* --- 图文分栏 --- */
.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  align-items: center;
  margin-top: clamp(22px, 3vw, 32px);
}
.page-about .about-split-body p {
  font-size: var(--fs-17);
  line-height: 1.78;
  color: var(--paper);
  margin: 0 0 1.1em;
  max-width: 56ch;
}
.page-about .about-split-body p:last-of-type {
  margin-bottom: 0;
}

.page-about .about-figure {
  margin: 0;
  border: 1px solid var(--about-hairline);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-deep);
  box-shadow: var(--shadow-panel);
}
.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}
.page-about .about-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--about-hairline);
  background: var(--about-surface);
  margin: 0;
}

.page-about .about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}
.page-about .about-tags li {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.02em;
  color: var(--cyan-soft);
  background: rgba(47, 224, 208, 0.08);
  border: 1px solid rgba(47, 224, 208, 0.28);
  border-radius: 999px;
  padding: 5px 13px;
  white-space: nowrap;
}

/* --- 主段落 + 旁注 --- */
.page-about .about-cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(22px, 3vw, 32px);
  align-items: start;
}
.page-about .about-cols .prose p {
  font-size: var(--fs-17);
  line-height: 1.78;
  color: var(--paper);
}
.page-about .about-aside {
  background: rgba(47, 224, 208, 0.07);
  border: 1px solid var(--about-hairline);
  border-left: 2px solid var(--cyan);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 20px 22px;
}
.page-about .about-aside-title {
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 14px;
}
.page-about .about-aside-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.page-about .about-aside-list li {
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--paper);
  padding-left: 15px;
  position: relative;
}
.page-about .about-aside-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan);
}

/* --- 信任条目 --- */
.page-about .about-honors {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.4vw, 26px);
  margin: clamp(22px, 3vw, 32px) 0 0;
}
.page-about .about-honor {
  padding: 2px 0 2px 18px;
  border-left: 1px solid var(--about-hairline);
  position: relative;
}
.page-about .about-honor::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 2px;
  width: 1px;
  height: 22px;
  background: var(--cyan);
}
.page-about .about-honor dt {
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--paper);
  margin-bottom: 8px;
}
.page-about .about-honor dd {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--muted);
  max-width: 34ch;
}

.page-about .about-tail-note {
  margin: clamp(24px, 3.4vw, 36px) 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--about-hairline);
  max-width: 68ch;
  line-height: 1.75;
}

/* --- 结尾引导 --- */
.page-about .about-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  align-items: center;
  background: var(--about-surface);
  border: 1px solid var(--about-hairline);
  border-radius: var(--radius);
  padding: clamp(22px, 3vw, 34px);
  box-shadow: var(--shadow-panel);
}
.page-about .about-cta h2 {
  font-size: var(--fs-22);
  margin: 0 0 10px;
}
.page-about .about-cta-copy p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--muted);
  max-width: 52ch;
}
.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-about .about-cta-actions .btn {
  text-decoration: none;
}

/* --- 聚焦可达性 --- */
.page-about a:focus-visible,
.page-about .about-block:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ===== 响应式 ===== */
@media (min-width: 700px) {
  .page-about .about-blocks {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-honors {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-hero-media img {
    aspect-ratio: 2 / 1;
  }
  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

@media (min-width: 900px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  }
  .page-about .about-split--media-first {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  }
  .page-about .about-cols {
    grid-template-columns: minmax(0, 1.9fr) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }
  .page-about .about-honors {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-about .about-tl-node {
    flex-basis: 300px;
    padding-right: 32px;
  }
  .page-about .about-tl-node p {
    max-width: 30ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-block,
  .page-about .breadcrumb a {
    transition: none;
  }
  .page-about .about-timeline {
    scroll-behavior: auto;
  }
}
<<<END>>>