/* ===== 品牌价值页 · page-about ===== */

.page-about {
  --about-ink-soft: rgba(220, 233, 240, 0.78);
  --about-hair: rgba(14, 110, 140, 0.16);
}

/* —— 首屏 —— */
.page-about .about-hero {
  padding: clamp(18px, 3.5vw, 34px) 0 clamp(42px, 6vw, 72px);
  background:
    radial-gradient(120% 92% at 86% -14%, rgba(111, 182, 204, 0.28) 0%, rgba(111, 182, 204, 0) 60%),
    linear-gradient(180deg, var(--mq-frost) 0%, var(--mq-snow) 74%);
  border-bottom: 1px solid var(--mq-line-soft);
}

.page-about .about-hero .mq-breadcrumb {
  margin-bottom: clamp(20px, 3.6vw, 34px);
}

.page-about .about-hero__grid {
  row-gap: clamp(28px, 4vw, 44px);
  align-items: start;
}

.page-about .about-hero__intro .mq-h1 {
  margin-top: 10px;
  color: var(--mq-night);
}

.page-about .about-hero__intro .mq-lead {
  margin-top: 16px;
  max-width: 46ch;
  color: var(--mq-slate);
}

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

.page-about .about-hero__note {
  margin-top: 20px;
  color: var(--mq-ice);
  letter-spacing: 0.06em;
}

/* 现状面板 */
.page-about .about-hero__panel {
  border: 1px solid var(--mq-line-dark);
  border-radius: var(--mq-radius);
  background-image: var(--mq-grad-night);
  padding: clamp(20px, 3vw, 30px);
  box-shadow: var(--mq-shadow-2);
}

.page-about .about-panel__eyebrow {
  margin-bottom: 20px;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--mq-ice-pale);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-stat {
  display: grid;
  gap: 5px;
  padding-left: 12px;
  border-left: 1px solid var(--mq-line-dark);
}

.page-about .about-stat__num {
  font-size: clamp(1.35rem, 4.2vw, 1.9rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
  color: var(--mq-snow);
}

.page-about .about-stat__label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--mq-ice-pale);
}

/* —— 通用章节基调 —— */
.page-about .about-band {
  border-bottom: 1px solid var(--mq-line-soft);
}

.page-about .about-band__lead {
  margin-top: 14px;
  max-width: 58ch;
  color: var(--mq-slate);
}

.page-about .about-band .mq-h2 {
  color: var(--mq-night);
}

/* —— 时间线 —— */
.page-about .about-timeline {
  position: relative;
  margin-top: 34px;
  padding-left: 22px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--mq-signal) 0%, var(--mq-ice) 28%, var(--mq-line-soft) 100%);
}

.page-about .about-node {
  position: relative;
  padding-bottom: 36px;
}

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

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -18px;
  top: 9px;
  width: 14px;
  height: 2px;
  background: var(--mq-signal);
  transition: width 0.2s var(--mq-ease);
}

.page-about .about-node:hover::before,
.page-about .about-node:focus-within::before {
  width: 24px;
}

.page-about .about-node__year {
  font-size: 13px;
  letter-spacing: 0.12em;
  font-variant-numeric: tabular-nums;
  color: var(--mq-signal-deep);
}

.page-about .about-node__title {
  margin-top: 7px;
  font-size: clamp(1.15rem, 2.6vw, 1.5rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--mq-night);
}

.page-about .about-node__inner {
  display: grid;
  gap: 22px;
  margin-top: 14px;
}

.page-about .about-node__text {
  max-width: 60ch;
  color: var(--mq-slate);
  line-height: 1.75;
}

.page-about .about-node__points {
  display: grid;
  gap: 9px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-node__points li {
  position: relative;
  padding-left: 17px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--mq-slate);
}

.page-about .about-node__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 8px;
  height: 1px;
  background: var(--mq-ice-pale);
}

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

.page-about .about-figure .mq-figure__frame {
  border: 1px solid var(--mq-line);
  border-radius: var(--mq-radius);
  overflow: hidden;
  box-shadow: var(--mq-shadow-1);
}

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

.page-about .about-figure .mq-figure__cap {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mq-slate);
}

.page-about .about-figure--mid {
  margin-top: 30px;
}

/* —— 整理方法 —— */
.page-about .about-facts {
  display: grid;
  margin-top: 24px;
}

.page-about .about-fact {
  position: relative;
  padding: 18px 0 18px 20px;
  border-top: 1px solid var(--about-hair);
  transition: background-color 0.18s var(--mq-ease);
}

.page-about .about-fact:last-child {
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-fact::before {
  content: "";
  position: absolute;
  left: 0;
  top: 26px;
  width: 8px;
  height: 2px;
  background: var(--mq-line-dark);
  transition: width 0.18s var(--mq-ease), background-color 0.18s var(--mq-ease);
}

.page-about .about-fact:hover {
  background: rgba(220, 233, 240, 0.42);
}

.page-about .about-fact:hover::before {
  width: 16px;
  background: var(--mq-signal);
}

.page-about .about-fact__title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--mq-ice-deep);
}

.page-about .about-fact__text {
  margin-top: 8px;
  max-width: 62ch;
  color: var(--mq-slate);
  line-height: 1.75;
}

/* —— 团队与协作 —— */
.page-about .about-team {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  margin-top: 26px;
  padding: 22px 0 22px 18px;
  border-left: 2px solid var(--mq-signal);
  background: linear-gradient(90deg, rgba(220, 233, 240, 0.55) 0%, rgba(220, 233, 240, 0) 78%);
}

.page-about .about-team__num {
  font-size: clamp(2.4rem, 7vw, 3.4rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
  color: var(--mq-ice);
}

.page-about .about-team__title {
  font-size: 17px;
  font-weight: 700;
  color: var(--mq-night);
}

.page-about .about-team__text {
  margin-top: 8px;
  max-width: 60ch;
  color: var(--mq-slate);
  line-height: 1.75;
}

.page-about .about-partners {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

.page-about .about-partner {
  padding: 22px 20px;
  border: 1px solid var(--mq-line);
  border-radius: var(--mq-radius);
  background: var(--mq-snow);
  box-shadow: var(--mq-shadow-1);
  transition: transform 0.2s var(--mq-ease), box-shadow 0.2s var(--mq-ease);
}

.page-about .about-partner:hover {
  transform: translateY(-2px);
  box-shadow: var(--mq-shadow-2);
}

.page-about .about-partner__num {
  font-size: 13px;
  letter-spacing: 0.12em;
  font-variant-numeric: tabular-nums;
  color: var(--mq-ice);
}

.page-about .about-partner__title {
  margin-top: 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--mq-night);
}

.page-about .about-partner__text {
  margin-top: 8px;
  color: var(--mq-slate);
  line-height: 1.75;
  font-size: 15px;
}

/* —— 年度修订 —— */
.page-about .about-cycle {
  display: grid;
  gap: 0;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-about .about-cycle__item {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 14px;
  padding: 15px 0;
  border-top: 1px solid var(--about-hair);
  align-items: baseline;
}

.page-about .about-cycle__item:last-child {
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-cycle__season {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--mq-signal-deep);
}

.page-about .about-cycle__text {
  color: var(--mq-slate);
  line-height: 1.7;
}

.page-about .about-note {
  margin-top: 24px;
  padding: 16px 18px;
  border-left: 1px solid var(--mq-ice-pale);
  background: rgba(111, 182, 204, 0.08);
  color: var(--mq-slate);
  line-height: 1.75;
  font-size: 15px;
}

/* —— 黑龙江根脉 —— */
.page-about .about-region {
  position: relative;
  background-image: var(--mq-grad-night);
  overflow: hidden;
}

.page-about .about-region__head .mq-h2 {
  color: var(--mq-snow);
}

.page-about .about-region__eyebrow {
  color: var(--mq-ice-pale);
}

.page-about .about-region__text {
  margin-top: 16px;
  max-width: 62ch;
  color: var(--about-ink-soft);
  line-height: 1.8;
}

.page-about .about-region__grid {
  margin-top: 34px;
  row-gap: 22px;
}

.page-about .about-region__fact {
  padding-top: 16px;
  border-top: 1px solid var(--mq-line-dark);
}

.page-about .about-region__fact-num {
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
  color: var(--mq-snow);
}

.page-about .about-region__fact-num span {
  margin-left: 0.15em;
  font-size: 0.42em;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--mq-ice-pale);
}

.page-about .about-region__fact-label {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mq-ice-pale);
}

.page-about .about-figure--region {
  margin-top: 38px;
}

.page-about .about-figure--region .mq-figure__frame {
  border-color: var(--mq-line-dark);
}

.page-about .about-figure--region .mq-figure__cap {
  color: var(--mq-ice-pale);
}

/* —— 接下来 —— */
.page-about .about-next-section {
  background: linear-gradient(180deg, var(--mq-snow) 0%, var(--mq-frost) 100%);
}

.page-about .about-next__head {
  max-width: 62ch;
}

.page-about .about-next {
  display: grid;
  gap: 16px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-next__item {
  display: flex;
}

.page-about .about-next__link {
  display: grid;
  gap: 8px;
  width: 100%;
  padding: 24px 22px;
  border: 1px solid var(--mq-line);
  border-radius: var(--mq-radius);
  background: var(--mq-snow);
  box-shadow: var(--mq-shadow-1);
  text-decoration: none;
  transition: transform 0.2s var(--mq-ease), box-shadow 0.2s var(--mq-ease), border-color 0.2s var(--mq-ease);
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  transform: translateY(-2px);
  border-color: var(--mq-ice-pale);
  box-shadow: var(--mq-shadow-2);
}

.page-about .about-next__kicker {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--mq-ice);
}

.page-about .about-next__title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--mq-night);
}

.page-about .about-next__desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--mq-slate);
}

.page-about .about-next__back {
  margin-top: 28px;
}

/* —— 响应式 —— */
@media (min-width: 720px) {
  .page-about .about-partners {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 860px) {
  .page-about .about-node--split .about-node__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr);
    gap: 36px;
    align-items: start;
  }

  .page-about .about-team {
    padding-right: 24px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-timeline {
    padding-left: 28px;
  }

  .page-about .about-node::before {
    left: -24px;
  }

  .page-about .about-node:hover::before,
  .page-about .about-node:focus-within::before {
    width: 28px;
  }
}

@media (max-width: 640px) {
  .page-about .about-stats {
    gap: 18px 12px;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .page-about .about-team__num {
    font-size: 2.2rem;
  }

  .page-about .about-cycle__item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .page-about .about-hero__actions .mq-btn {
    width: 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-node::before,
  .page-about .about-fact,
  .page-about .about-fact::before,
  .page-about .about-partner,
  .page-about .about-next__link {
    transition: none;
  }

  .page-about .about-partner:hover,
  .page-about .about-next__link:hover {
    transform: none;
  }
}