/* ===== 品牌中心（/brand/）页面专属样式 ===== */
.page-about {
  --about-index-w: 172px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: calc(var(--nav-h) + 52px) 0 48px;
  overflow: hidden;
  background:
    radial-gradient(120% 92% at 10% 0%, rgba(183, 255, 60, .28) 0%, rgba(183, 255, 60, 0) 58%),
    linear-gradient(180deg, rgba(220, 235, 207, .88) 0%, rgba(244, 248, 241, 0) 84%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -10% -6%;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(var(--tilt), rgba(31, 77, 46, .07) 0 1px, transparent 1px 62px),
    repeating-linear-gradient(calc(var(--tilt) + 90deg), rgba(31, 77, 46, .07) 0 1px, transparent 1px 62px);
}

.page-about .about-hero .shell {
  position: relative;
  z-index: 1;
}

.page-about .hero-kicker {
  margin: 16px 0 0;
  color: var(--c-flesh);
  font-weight: 700;
  letter-spacing: .16em;
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  max-width: 19ch;
  font-size: clamp(27px, 5.4vw, 46px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--c-pith);
}

.page-about .hero-lede {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-about .hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 文档网格：窄索引 + 宽正文 ---------- */
.page-about .doc-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding: 12px 0 72px;
}

.page-about .side-index {
  border-top: 2px solid var(--c-pith);
  padding-top: 12px;
}

.page-about .side-index-label {
  margin: 0 0 10px;
  color: var(--c-mute);
  letter-spacing: .12em;
}

.page-about .index-nav {
  display: grid;
  gap: 2px;
}

.page-about .index-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 10px;
  border-left: 2px solid var(--line);
  font-size: 14px;
  color: var(--c-mute);
  text-decoration: none;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}

.page-about .index-link:hover {
  color: var(--c-pith);
  border-left-color: var(--c-flesh);
}

.page-about .index-link[data-active],
.page-about .index-link[aria-current="location"] {
  color: var(--c-pith);
  font-weight: 700;
  border-left-color: var(--c-flesh);
  background: var(--c-light);
  border-radius: 0 var(--r-xs) var(--r-xs) 0;
}

.page-about .doc-flow {
  min-width: 0;
}

/* ---------- 章节结构 ---------- */
.page-about .doc-section {
  padding: 36px 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--nav-h) + 20px);
}

.page-about .doc-section:first-child {
  border-top: none;
  padding-top: 8px;
}

.page-about .doc-section.is-band {
  position: relative;
  margin: 8px 0;
  padding: 30px 20px;
  border-top: none;
  border-radius: var(--r-lg);
  background: linear-gradient(140deg, rgba(220, 235, 207, .95) 0%, rgba(220, 235, 207, .55) 100%);
}

.page-about .section-head {
  margin-bottom: 18px;
}

.page-about .section-title {
  color: var(--c-pith);
  font-size: clamp(20px, 2.8vw, 27px);
  font-weight: 800;
  line-height: 1.3;
}

.page-about .prose p {
  margin: 0 0 14px;
  color: var(--ink-soft);
}

/* ---------- 服务对象 ---------- */
.page-about .who-list {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .who-item {
  position: relative;
  padding: 16px 18px 16px 22px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: #fff;
}

.page-about .who-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 4px;
  border-radius: var(--r-pill);
  background: var(--c-flesh);
}

.page-about .who-item p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-about .who-tag {
  font-size: 12px;
}

/* ---------- 内容生产流程 ---------- */
.page-about .flow-track {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .flow-step {
  position: relative;
  padding: 18px 16px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: #fff;
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.page-about .flow-idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: var(--r-pill);
  background: var(--c-pith);
  color: var(--c-signal);
  font-size: 12px;
  font-weight: 700;
}

.page-about .flow-name {
  margin: 12px 0 0;
  font-size: 17px;
  font-weight: 800;
  color: var(--c-pith);
}

.page-about .flow-desc {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-about .flow-role {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line-strong);
  font-size: 12px;
  color: var(--c-mute);
  opacity: .82;
  transition: opacity .18s ease, color .18s ease;
}

@media (hover: hover) {
  .page-about .flow-step:hover {
    transform: translateY(-4px);
    border-color: var(--c-flesh);
    box-shadow: 0 12px 26px rgba(31, 77, 46, .13);
  }

  .page-about .flow-step:hover .flow-role {
    opacity: 1;
    color: var(--c-data);
  }
}

/* ---------- 覆盖与规模 ---------- */
.page-about .scale-band {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  border-radius: var(--r-md);
  overflow: hidden;
  background: rgba(122, 182, 72, .35);
}

.page-about .scale-cell {
  padding: 20px 16px;
  background: var(--c-pith);
  color: var(--c-frost);
}

.page-about .scale-num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(28px, 6vw, 42px);
  font-weight: 700;
  line-height: 1;
  color: var(--c-signal);
}

.page-about .scale-label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.55;
  color: rgba(244, 248, 241, .82);
}

.page-about .scale-body {
  display: grid;
  gap: 22px;
}

/* ---------- 图片容器 ---------- */
.page-about .about-figure {
  margin: 0;
}

.page-about .about-figure .media {
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-about .about-figure .media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .media-caption {
  margin: 10px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-mute);
}

/* ---------- 团队分工 ---------- */
.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-about .team-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .team-item {
  position: relative;
  padding: 16px 18px;
  border-radius: var(--r-md);
  background: var(--c-light);
}

.page-about .team-idx {
  display: inline-block;
  padding: 2px 9px;
  border-radius: var(--r-pill);
  background: var(--c-pith);
  color: var(--c-signal);
  font-size: 11px;
  letter-spacing: .08em;
}

.page-about .team-name {
  margin: 10px 0 0;
  font-size: 16px;
  font-weight: 800;
  color: var(--c-pith);
}

.page-about .team-item p {
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-soft);
}

/* ---------- 发展历程时间线 ---------- */
.page-about .time-wrap {
  position: relative;
  margin-top: 6px;
  padding: 28px 18px;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--c-pith);
}

.page-about .time-texture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .3;
  pointer-events: none;
}

.page-about .time-track {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
}

.page-about .time-track::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: var(--r-pill);
  background: linear-gradient(180deg, var(--c-signal) 0%, var(--c-flesh) 45%, rgba(122, 182, 72, .22) 100%);
}

.page-about .time-node {
  position: relative;
  padding-bottom: 12px;
}

.page-about .time-node:last-child {
  padding-bottom: 0;
}

.page-about .time-node::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 15px;
  width: 12px;
  height: 12px;
  border-radius: var(--r-pill);
  background: var(--c-pith);
  border: 2px solid var(--c-flesh);
}

.page-about .time-details summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  cursor: pointer;
  list-style: none;
  border-radius: var(--r-sm);
  border: 1px solid rgba(244, 248, 241, .18);
  background: rgba(244, 248, 241, .07);
  color: var(--c-frost);
  transition: background-color .18s ease, border-color .18s ease;
}

.page-about .time-details summary::-webkit-details-marker {
  display: none;
}

.page-about .time-details summary::marker {
  content: "";
}

@media (hover: hover) {
  .page-about .time-details summary:hover {
    background: rgba(183, 255, 60, .13);
    border-color: rgba(183, 255, 60, .5);
  }
}

.page-about .time-details[open] summary {
  background: rgba(183, 255, 60, .16);
  border-color: var(--c-signal);
}

.page-about .time-idx {
  color: var(--c-signal);
  font-size: 12px;
  letter-spacing: .06em;
}

.page-about .time-title {
  font-size: 15.5px;
  font-weight: 700;
}

.page-about .time-tag {
  margin-left: auto;
  padding: 2px 10px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(183, 255, 60, .5);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--c-signal);
}

.page-about .time-body {
  padding: 12px 14px 4px 14px;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(244, 248, 241, .88);
}

.page-about .time-body p {
  margin: 0;
}

/* ---------- 长期习惯 ---------- */
.page-about .keep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .keep-item {
  padding: 20px 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: #fff;
}

.page-about .keep-mark {
  display: block;
  width: 34px;
  height: 4px;
  border-radius: var(--r-pill);
  background: var(--c-brown);
}

.page-about .keep-name {
  margin: 14px 0 0;
  font-size: 16px;
  font-weight: 800;
  color: var(--c-pith);
}

.page-about .keep-item p {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-about .keep-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--c-data);
  text-decoration: none;
  border-bottom: 1px dashed var(--c-data);
}

.page-about .keep-link:hover {
  color: var(--c-pith);
  border-bottom-color: var(--c-pith);
}

/* ---------- 结尾导航带 ---------- */
.page-about .about-next {
  margin-top: 34px;
  padding: 26px 20px;
  border-radius: var(--r-lg);
  background: linear-gradient(100deg, var(--c-pith) 0%, #2A6340 60%, #35744A 100%);
}

.page-about .next-title {
  margin: 0 0 14px;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .08em;
  color: var(--c-signal);
}

.page-about .next-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .next-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 16px;
  border-radius: var(--r-pill);
  background: rgba(244, 248, 241, .1);
  color: var(--c-frost);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: background-color .18s ease, color .18s ease;
}

.page-about .next-list a .idx {
  color: var(--c-signal);
}

.page-about .next-list a:hover {
  background: var(--c-signal);
  color: var(--c-pith);
}

.page-about .next-list a:hover .idx {
  color: var(--c-pith);
}

/* ---------- 窄屏微调 ---------- */
@media (max-width: 480px) {
  .page-about .about-hero {
    padding-top: calc(var(--nav-h) + 36px);
  }

  .page-about .doc-section.is-band {
    padding: 26px 15px;
  }

  .page-about .scale-cell {
    padding: 16px 13px;
  }

  .page-about .time-wrap {
    padding: 22px 14px;
  }

  .page-about .time-track {
    padding-left: 22px;
  }

  .page-about .time-node::before {
    left: -21px;
    width: 10px;
    height: 10px;
  }

  .page-about .hero-links .btn {
    flex: 1 1 auto;
    text-align: center;
  }
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 760px) {
  .page-about .flow-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .flow-step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 33px;
    right: -9px;
    width: 6px;
    height: 6px;
    border-radius: var(--r-pill);
    background: var(--c-signal);
    box-shadow: 0 0 0 3px rgba(183, 255, 60, .32);
  }

  .page-about .scale-band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-bottom: 26px;
  }

  .page-about .scale-body {
    grid-template-columns: minmax(0, 1fr) minmax(0, .78fr);
    align-items: start;
    gap: 28px;
  }

  .page-about .team-grid {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1fr);
    align-items: start;
    gap: 26px;
  }

  .page-about .keep-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .next-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .next-list a {
    justify-content: flex-start;
    gap: 10px;
  }
}

/* ---------- 桌面：索引列吸顶 ---------- */
@media (min-width: 960px) {
  .page-about .doc-grid {
    grid-template-columns: var(--about-index-w) minmax(0, 1fr);
    gap: 56px;
    padding-bottom: 96px;
  }

  .page-about .side-index {
    position: sticky;
    top: calc(var(--nav-h) + 28px);
    align-self: start;
    max-height: calc(100vh - var(--nav-h) - 56px);
    overflow: auto;
  }

  .page-about .doc-section {
    padding: 44px 0;
  }

  .page-about .doc-section.is-band {
    padding: 36px 30px;
    margin: 14px 0;
  }

  .page-about .about-hero h1 {
    margin-top: 16px;
  }

  .page-about .time-wrap {
    padding: 34px 30px;
  }

  .page-about .about-next {
    padding: 30px 28px;
  }
}
<<<END>>>