/* ===== 品牌介绍页 · 页面专属样式 ===== */
.page-about {
  --about-line: rgba(138, 106, 71, 0.34);
  --about-line-soft: rgba(138, 106, 71, 0.16);
  --about-panel: rgba(28, 69, 102, 0.42);
  --about-rail-w: 196px;
  padding-bottom: 48px;
}

/* ---------- 面包屑微调 ---------- */
.page-about .breadcrumbs {
  margin-top: 10px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: 30px;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 5.6vw, 52px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--paper);
  max-width: 17em;
  margin: 12px 0 0;
  text-wrap: balance;
}

.page-about .about-hero__lede {
  max-width: 42em;
  margin: 22px 0 0;
  color: var(--mist);
  font-size: 17px;
  line-height: 1.85;
}

.page-about .about-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
}

/* ---------- 主布局：左锚点 + 右叙事 ---------- */
.page-about .about-layout {
  display: grid;
  gap: 40px;
  margin-top: 46px;
}

@media (min-width: 1000px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: 64px;
    margin-top: 60px;
  }

  .page-about .about-rail {
    position: sticky;
    top: 108px;
    align-self: start;
  }
}

/* ---------- 左锚点 ---------- */
.page-about .about-rail__title {
  margin: 0 0 14px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--slate);
}

.page-about .about-rail__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--about-line-soft);
  border-radius: 999px;
  color: var(--slate);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease),
    background-color var(--dur-fast) var(--ease);
}

.page-about .about-rail__num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--copper);
}

@media (min-width: 1000px) {
  .page-about .about-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-about .about-rail__link {
    padding: 11px 12px;
    border: 0;
    border-left: 2px solid var(--about-line-soft);
    border-radius: 0;
    background: transparent;
  }

  .page-about .about-rail__link[aria-current="true"] {
    border-left-color: var(--gold);
    color: var(--gold-hi);
    background: rgba(200, 162, 74, 0.08);
  }

  .page-about .about-rail__link[aria-current="true"] .about-rail__num {
    color: var(--gold-hi);
  }
}

/* ---------- 章节节奏 ---------- */
.page-about .about-block {
  scroll-margin-top: 120px;
}

.page-about .about-block + .about-block {
  margin-top: 56px;
}

@media (min-width: 760px) {
  .page-about .about-block + .about-block {
    margin-top: 88px;
  }
}

.page-about .about-block__lede {
  max-width: 40em;
  margin: 18px 0 0;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.85;
}

/* ---------- 分段控件 ---------- */
.page-about .about-tabs {
  margin-top: 26px;
  padding: 8px;
  border: 1px solid var(--about-line-soft);
  border-radius: var(--radius-lg);
  background: linear-gradient(158deg, rgba(18, 48, 74, 0.86), rgba(11, 27, 43, 0.62));
}

.page-about .about-tabs .tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-about .about-tabs .tab {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--slate);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  padding: 11px 20px;
  border-radius: 999px;
  cursor: pointer;
  transition: color var(--dur-fast) var(--ease),
    background-color var(--dur-fast) var(--ease);
}

.page-about .about-tabs .tab[aria-selected="true"] {
  background: var(--gold);
  color: var(--ink-900);
}

.page-about .about-tabs .tabpanel {
  padding: 26px 18px 14px;
}

@media (min-width: 760px) {
  .page-about .about-tabs .tablist {
    padding: 4px;
  }

  .page-about .about-tabs .tabpanel {
    padding: 30px 26px 18px;
  }
}

.page-about .about-tabs__lead {
  margin: 0;
  max-width: 40em;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.85;
}

.page-about .about-mini-list {
  display: grid;
  gap: 12px;
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.page-about .about-mini-list li {
  position: relative;
  padding-left: 22px;
  color: var(--slate);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-mini-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 10px;
  height: 2px;
  border-radius: 2px;
  background: var(--gold);
}

.page-about .about-mini-list strong {
  color: var(--paper);
  font-weight: 500;
}

.page-about .about-tab-link {
  margin: 22px 0 0;
}

.page-about .about-tab-link a {
  display: inline-block;
  padding-bottom: 3px;
  border-bottom: 1px solid rgba(200, 162, 74, 0.45);
  color: var(--gold-hi);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: border-color var(--dur-fast) var(--ease);
}

.page-about .about-tab-link a:hover {
  border-color: var(--gold-hi);
}

/* ---------- 品牌主张 ---------- */
.page-about .about-claim {
  margin-top: 26px;
}

.page-about .about-claim__lead {
  max-width: 40em;
}

.page-about .about-claim__lead p {
  margin: 0;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.85;
}

.page-about .about-claim__lead p + p {
  margin-top: 16px;
}

.page-about .about-practices {
  display: grid;
  gap: 28px;
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
}

@media (min-width: 720px) {
  .page-about .about-practices {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
  }
}

.page-about .about-practice {
  padding-top: 20px;
  border-top: 1px solid var(--about-line);
}

.page-about .about-practice__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .about-practice__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-practice p {
  margin: 0;
  color: var(--slate);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-quote {
  margin: 44px 0 0;
  padding: 24px 26px;
  border-left: 2px solid var(--gold);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: var(--about-panel);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.4vw, 22px);
  line-height: 1.6;
  color: var(--gold-hi);
  max-width: 32em;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: 36px;
  list-style: none;
  margin: 44px 0 0;
  padding: 0 0 0 28px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, rgba(138, 106, 71, 0.75), rgba(138, 106, 71, 0.12));
}

.page-about .about-timeline__item {
  position: relative;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 5px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--copper);
  transition: background-color var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease);
}

.page-about .about-timeline__item:hover::before {
  background: var(--gold);
  border-color: var(--gold-hi);
}

.page-about .about-timeline__year {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-about .about-timeline__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-timeline__desc {
  margin: 0;
  max-width: 38em;
  color: var(--slate);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-timeline__hint {
  display: inline-block;
  margin: 12px 0 0;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(63, 127, 122, 0.16);
  color: var(--teal);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  transition: background-color var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease);
}

.page-about .about-timeline__item:hover .about-timeline__hint {
  background: rgba(200, 162, 74, 0.16);
  color: var(--gold-hi);
}

/* ---------- 双端结构 ---------- */
.page-about .about-twin {
  display: grid;
  gap: 18px;
  margin-top: 34px;
}

@media (min-width: 900px) {
  .page-about .about-twin {
    grid-template-columns: minmax(0, 1fr) minmax(190px, 0.68fr) minmax(0, 1fr);
    gap: 22px;
    align-items: stretch;
  }
}

.page-about .about-twin__panel {
  padding: 26px 24px 24px;
  border: 1px solid var(--about-line-soft);
  border-radius: var(--radius-lg);
  background: var(--about-panel);
}

.page-about .about-twin__head {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--paper);
}

.page-about .about-twin__panel > p {
  margin: 0;
  color: var(--slate);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-twin__list {
  display: grid;
  gap: 10px;
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
}

.page-about .about-twin__list li {
  position: relative;
  padding-left: 18px;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.7;
}

.page-about .about-twin__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  border: 1px solid var(--copper);
}

.page-about .about-twin__core {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  padding: 26px 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(165deg, rgba(200, 162, 74, 0.16), rgba(11, 27, 43, 0.85));
  border: 1px solid rgba(200, 162, 74, 0.3);
  text-align: center;
}

.page-about .about-twin__core-label {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--gold-hi);
}

.page-about .about-twin__stat {
  margin: 0;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.6;
}

.page-about .about-twin__num {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 6vw, 46px);
  line-height: 1.05;
  letter-spacing: -0.01em;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.page-about .about-twin__core-foot {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--slate);
}

/* ---------- 团队与协作 ---------- */
.page-about .about-team {
  display: grid;
  gap: 28px;
  margin-top: 30px;
}

@media (min-width: 820px) {
  .page-about .about-team {
    grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
    gap: 42px;
    align-items: start;
  }
}

.page-about .about-team__list {
  display: grid;
  gap: 22px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-team__item {
  padding-left: 20px;
  border-left: 2px solid var(--about-line);
}

.page-about .about-team__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--paper);
}

.page-about .about-team__item p {
  margin: 0;
  color: var(--slate);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-team__note {
  margin: 26px 0 0;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: rgba(215, 225, 234, 0.08);
  color: var(--mist);
  font-size: 14px;
  line-height: 1.8;
}

/* ---------- 服务与联络 ---------- */
.page-about .about-reach {
  display: grid;
  gap: 28px;
  margin-top: 28px;
}

@media (min-width: 860px) {
  .page-about .about-reach {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 44px;
    align-items: start;
  }
}

.page-about .about-reach__body p {
  margin: 0;
  max-width: 38em;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-about .about-reach__body p + p {
  margin-top: 14px;
}

.page-about .about-reach__contact {
  display: grid;
  gap: 0;
  margin: 26px 0 0;
  border-top: 1px solid var(--about-line-soft);
}

.page-about .about-reach__row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--about-line-soft);
}

@media (min-width: 560px) {
  .page-about .about-reach__row {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

.page-about .about-reach__row dt {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--slate);
}

.page-about .about-reach__row dd {
  margin: 0;
  color: var(--paper);
  font-size: 15px;
  line-height: 1.7;
  word-break: break-word;
}

.page-about .about-reach__more {
  margin: 22px 0 0;
}

.page-about .about-reach__more a {
  display: inline-block;
  padding-bottom: 3px;
  border-bottom: 1px solid rgba(200, 162, 74, 0.45);
  color: var(--gold-hi);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: border-color var(--dur-fast) var(--ease);
}

.page-about .about-reach__more a:hover {
  border-color: var(--gold-hi);
}

/* ---------- 阶段成果 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 32px;
}

.page-about .about-stat {
  padding: 24px 22px 22px;
  border: 1px solid var(--about-line-soft);
  border-radius: var(--radius-lg);
  background: var(--about-panel);
}

.page-about .about-stat--hero {
  background: linear-gradient(158deg, rgba(200, 162, 74, 0.2), rgba(11, 27, 43, 0.88));
  border-color: rgba(200, 162, 74, 0.32);
}

.page-about .about-stat__num {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 5.4vw, 42px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.page-about .about-stat--hero .about-stat__num {
  color: var(--gold-hi);
}

.page-about .about-stat__label {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--paper);
}

.page-about .about-stat__foot {
  margin: 7px 0 0;
  color: var(--slate);
  font-size: 13.5px;
  line-height: 1.7;
}

@media (min-width: 760px) {
  .page-about .about-stats {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-stat--hero {
    grid-column: span 3;
  }

  .page-about .about-stat {
    grid-column: span 3;
  }

  .page-about .about-stat:not(.about-stat--hero) {
    grid-column: span 3;
  }

  .page-about .about-stat:nth-child(n + 3) {
    grid-column: span 2;
  }
}

.page-about .about-cadence {
  margin-top: 26px;
  padding: 26px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-line-soft);
  background: rgba(215, 225, 234, 0.06);
}

.page-about .about-cadence__label {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .about-cadence__text {
  margin: 0;
  max-width: 40em;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.85;
}

.page-about .about-cadence__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  margin: 20px 0 0;
}

.page-about .about-cadence__links a {
  display: inline-block;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--about-line);
  color: var(--gold-hi);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: border-color var(--dur-fast) var(--ease);
}

.page-about .about-cadence__links a:hover {
  border-color: var(--gold-hi);
}

/* ---------- 窄屏收口 ---------- */
@media (max-width: 560px) {
  .page-about .about-tabs {
    padding: 6px;
    border-radius: var(--radius-md);
  }

  .page-about .about-tabs .tabpanel {
    padding: 20px 12px 10px;
  }

  .page-about .about-quote {
    padding: 20px 18px;
    margin-top: 34px;
  }

  .page-about .about-stat {
    padding: 20px 18px 18px;
  }

  .page-about .about-cadence {
    padding: 22px 18px;
  }

  .page-about .about-twin__panel,
  .page-about .about-twin__core {
    padding: 22px 18px;
  }
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-rail__link,
  .page-about .about-tabs .tab,
  .page-about .about-timeline__item::before,
  .page-about .about-timeline__hint,
  .page-about .about-tab-link a,
  .page-about .about-reach__more a,
  .page-about .about-cadence__links a {
    transition: none;
  }
}