/* ===== 品牌价值页 · 页面专属样式 ===== */
.page-about .container {
  padding-top: clamp(22px, 3.2vw, 48px);
  padding-bottom: clamp(48px, 7vw, 96px);
}

/* ---- 首屏 ---- */
.page-about .about-hero {
  display: grid;
  gap: clamp(24px, 3.6vw, 48px);
  padding-bottom: clamp(32px, 4.4vw, 64px);
  border-bottom: 1px solid var(--c-line);
}

.page-about .about-hero__text > * + * {
  margin-top: 16px;
}

.page-about .about-hero__lead {
  max-width: 62ch;
  color: var(--c-mute);
  font-size: 17px;
  line-height: 1.8;
}

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

.page-about .about-hero__viz {
  display: grid;
  gap: 16px;
  padding: clamp(20px, 2.6vw, 32px);
  border: 1px solid var(--c-line);
  background-color: var(--c-panel);
  background-image:
    linear-gradient(var(--c-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-line) 1px, transparent 1px);
  background-size: 28px 28px;
}

.page-about .viz-label {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-mute);
}

.page-about .viz-row {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
}

.page-about .viz-row__name {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-mute);
}

.page-about .viz-row__track {
  position: relative;
  display: block;
  height: 4px;
  background: var(--c-line);
}

.page-about .viz-row__track::after {
  content: "";
  position: absolute;
  right: 0;
  top: -4px;
  width: 1px;
  height: 12px;
  background: var(--c-line);
}

.page-about .viz-row__fill {
  display: block;
  height: 100%;
}

.page-about .viz-row--a .viz-row__fill {
  width: 100%;
  background: var(--c-lime);
}

.page-about .viz-row--b .viz-row__fill {
  width: 76%;
  background: var(--c-lime-deep);
}

.page-about .viz-row--c .viz-row__fill {
  width: 58%;
  background: var(--c-amber);
}

.page-about .viz-row--d .viz-row__fill {
  width: 40%;
  background: var(--c-lime);
}

.page-about .viz-foot {
  padding-top: 14px;
  border-top: 1px solid var(--c-line);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-mute);
}

@media (min-width: 920px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: center;
  }
}

/* ---- 区块骨架 ---- */
.page-about .about-block {
  padding-top: clamp(38px, 5.4vw, 78px);
}

.page-about .about-row {
  display: grid;
  gap: 14px;
}

.page-about .about-mark {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-about .about-mark__num {
  font-family: var(--f-mono);
  font-size: 20px;
  line-height: 1;
  letter-spacing: 0.05em;
  color: var(--c-lime);
}

.page-about .about-mark__label {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-mute);
}

.page-about .about-body > * + * {
  margin-top: clamp(16px, 2vw, 24px);
}

.page-about .about-body p {
  color: var(--c-mute);
  line-height: 1.8;
  max-width: 68ch;
}

.page-about .about-lead {
  color: var(--c-paper);
  font-size: 17px;
}

.page-about .about-body a {
  color: var(--c-lime);
  text-decoration: none;
  border-bottom: 1px solid var(--c-lime-deep);
}

.page-about .about-body a:hover,
.page-about .about-body a:focus-visible {
  color: var(--c-paper);
  border-bottom-color: var(--c-paper);
}

@media (min-width: 860px) {
  .page-about .about-row {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: clamp(24px, 3.6vw, 56px);
  }
  .page-about .about-mark {
    display: grid;
    gap: 8px;
    align-self: start;
    position: sticky;
    top: 28px;
    padding-top: 4px;
  }
}

/* ---- 01 服务对象 ---- */
.page-about .about-cols {
  display: grid;
  border-top: 1px solid var(--c-line);
}

.page-about .about-card {
  padding: clamp(20px, 2.4vw, 30px) clamp(18px, 2.2vw, 26px);
  border-bottom: 1px solid var(--c-line);
  background: var(--c-panel);
}

.page-about .about-card--alt {
  border-top: 2px solid var(--c-amber);
  background: var(--c-bg);
}

.page-about .about-card__title {
  margin-top: 12px;
  font-size: 20px;
  line-height: 1.4;
  color: var(--c-paper);
  letter-spacing: -0.01em;
}

.page-about .about-card p {
  margin-top: 10px;
  font-size: 15px;
}

@media (min-width: 720px) {
  .page-about .about-cols {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    border-left: 1px solid var(--c-line);
  }
  .page-about .about-card {
    border-right: 1px solid var(--c-line);
  }
}

/* ---- 02 四条主线 ---- */
.page-about .line-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--c-line);
}

.page-about .line-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-about .line-item__num {
  font-size: 15px;
  color: var(--c-lime);
  padding-top: 4px;
}

.page-about .line-item__title {
  font-size: 19px;
  line-height: 1.45;
  color: var(--c-paper);
  letter-spacing: -0.01em;
}

.page-about .line-item__text p {
  margin-top: 8px;
  font-size: 15px;
}

@media (min-width: 640px) {
  .page-about .line-item {
    grid-template-columns: 66px minmax(0, 1fr);
    gap: 24px;
  }
}

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

.page-about .about-figure--square {
  max-width: 520px;
}

.page-about .about-figure--banner {
  margin-bottom: clamp(24px, 3vw, 40px);
}

.page-about .media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

/* ---- 03 流程 ---- */
.page-about .about-split {
  display: grid;
  gap: 22px;
}

.page-about .flow-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--c-line);
}

.page-about .flow-item {
  position: relative;
  padding: 18px 0 18px 20px;
  border-bottom: 1px solid var(--c-line);
}

.page-about .flow-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 28px;
  width: 10px;
  height: 1px;
  background: var(--c-lime);
}

.page-about .flow-item__title {
  font-size: 17px;
  line-height: 1.5;
  color: var(--c-paper);
}

.page-about .flow-item p {
  margin-top: 8px;
  font-size: 15px;
}

@media (min-width: 820px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }
}

/* ---- 横向能力条 ---- */
.page-about .about-capacity {
  padding-top: clamp(38px, 5.4vw, 78px);
}

.page-about .cap-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--c-line);
  border-left: 1px solid var(--c-line);
}

.page-about .cap-item {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 20px 16px 24px;
  border-right: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
  background: var(--c-panel);
}

.page-about .cap-item__num {
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1;
  color: var(--c-lime);
}

.page-about .cap-item__num--amber {
  color: var(--c-amber);
}

.page-about .cap-item__label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-mute);
}

@media (min-width: 900px) {
  .page-about .cap-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

/* ---- 04 发展历程 ---- */
.page-about .timeline {
  display: grid;
  gap: 22px;
}

.page-about .timeline__index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .timeline__index a {
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-mute);
  text-decoration: none;
  padding: 8px 12px;
  border: 1px solid var(--c-line);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .timeline__index a:hover,
.page-about .timeline__index a:focus-visible {
  color: var(--c-lime);
  border-color: var(--c-lime);
}

.page-about .timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--c-line);
}

.page-about .timeline__node {
  position: relative;
  padding: 22px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-about .timeline__year {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--c-amber);
}

.page-about .timeline__title {
  margin-top: 8px;
  font-size: 20px;
  line-height: 1.4;
  color: var(--c-paper);
  letter-spacing: -0.01em;
}

.page-about .timeline__node p {
  margin-top: 8px;
  font-size: 15px;
}

.page-about .timeline__tip {
  display: block;
  max-width: 52ch;
  margin-top: 12px;
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-lime);
  border-left: 2px solid var(--c-lime);
  background: rgba(201, 255, 63, 0.06);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.24s var(--ease), transform 0.24s var(--ease);
}

@media (min-width: 760px) {
  .page-about .timeline {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 34px;
    align-items: start;
  }
  .page-about .timeline__index {
    flex-direction: column;
    gap: 0;
    position: sticky;
    top: 28px;
    border-left: 1px solid var(--c-line);
  }
  .page-about .timeline__index a {
    border: 0;
    border-left: 2px solid transparent;
    margin-left: -1px;
    padding: 9px 0 9px 14px;
  }
  .page-about .timeline__node:hover .timeline__tip,
  .page-about .timeline__node:focus-within .timeline__tip {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 759px) {
  .page-about .timeline__tip {
    opacity: 1;
    transform: none;
  }
}

/* ---- 05 团队 ---- */
.page-about .team-grid {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--c-line);
}

.page-about .team-cell {
  padding: 20px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-about .team-cell__title {
  font-size: 17px;
  line-height: 1.5;
  color: var(--c-paper);
}

.page-about .team-cell p {
  margin-top: 8px;
  font-size: 15px;
}

@media (min-width: 900px) {
  .page-about .team-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) minmax(0, 1fr);
    border-left: 1px solid var(--c-line);
  }
  .page-about .team-cell {
    padding: 22px 22px 26px;
    border-right: 1px solid var(--c-line);
  }
}

/* ---- 06 合作 ---- */
.page-about .partner-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--c-line);
}

.page-about .partner-item {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-about .partner-item__num {
  font-size: 22px;
  line-height: 1;
  color: var(--c-amber);
}

.page-about .partner-item__text {
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-mute);
}

/* ---- 页尾跳转 ---- */
.page-about .about-next {
  margin-top: clamp(44px, 6vw, 88px);
  padding-top: clamp(28px, 3.6vw, 44px);
  border-top: 1px solid var(--c-line);
}

.page-about .next-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--c-line);
}

.page-about .next-link {
  display: grid;
  gap: 6px;
  padding: 18px 20px 18px 22px;
  border-bottom: 1px solid var(--c-line);
  border-left: 2px solid transparent;
  text-decoration: none;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-about .next-link__name {
  font-family: var(--f-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--c-lime);
}

.page-about .next-link__desc {
  font-size: 16px;
  line-height: 1.6;
  color: var(--c-paper);
}

.page-about .next-link:hover,
.page-about .next-link:focus-visible {
  border-left-color: var(--c-lime);
  background: var(--c-panel);
}

@media (min-width: 880px) {
  .page-about .next-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-left: 1px solid var(--c-line);
  }
  .page-about .next-link {
    padding: 24px 22px 28px;
    border-left: 0;
    border-right: 1px solid var(--c-line);
  }
  .page-about .next-link:hover,
  .page-about .next-link:focus-visible {
    border-left: 0;
    box-shadow: inset 0 2px 0 0 var(--c-lime);
  }
}

/* ---- 动效降级 ---- */
@media (prefers-reduced-motion: reduce) {
  .page-about .timeline__tip,
  .page-about .next-link,
  .page-about .timeline__index a {
    transition: none;
  }
  .page-about .timeline__node:hover .timeline__tip,
  .page-about .timeline__node:focus-within .timeline__tip {
    transform: none;
  }
}