/* ==========================================================
   华体汇中心 · 品牌价值页（/values/）页面专属样式
   作用域：.page-about
   ========================================================== */

.page-about {
  --ab-cut: 18px;
  --ab-cut-sm: 8px;
}

/* ---------- 首屏 ---------- */

.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--off);
  padding: clamp(22px, 4vw, 44px) 0 clamp(40px, 6vw, 78px);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(36, 64, 90, 0.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(36, 64, 90, 0.6) 1px, transparent 1px);
  background-size: 76px 76px;
  opacity: 0.34;
  pointer-events: none;
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  top: -180px;
  right: -140px;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(53, 224, 208, 0.16), transparent 68%);
  pointer-events: none;
}

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

.page-about .ab-hero__grid {
  display: grid;
  gap: 28px;
  margin-top: clamp(18px, 3vw, 30px);
}

@media (min-width: 940px) {
  .page-about .ab-hero__grid {
    grid-template-columns: 1.45fr 1fr;
    align-items: end;
    gap: 56px;
  }
}

.page-about .ab-hero .display {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  font-size: clamp(28px, 5.6vw, 56px);
  margin: 14px 0 0;
  max-width: 22ch;
  color: var(--off);
}

.page-about .ab-hero .eyebrow {
  color: var(--cyan);
}

.page-about .ab-hero .lede {
  font-family: var(--font-serif);
  font-size: clamp(15px, 1.8vw, 18px);
  line-height: 1.85;
  color: var(--off-soft);
  margin: 20px 0 0;
  max-width: 40em;
}

.page-about .ab-hero__panel {
  background: var(--navy-700);
  border: 1px solid var(--line-blue);
  clip-path: polygon(0 0, calc(100% - var(--ab-cut)) 0, 100% var(--ab-cut), 100% 100%, var(--ab-cut) 100%, 0 calc(100% - var(--ab-cut)));
  padding: 20px 20px 24px;
}

.page-about .ab-hero__panel-title {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gray);
  text-transform: uppercase;
}

.page-about .ab-hero__stats {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 18px;
}

.page-about .ab-hero__stat {
  border-top: 1px solid var(--line-blue);
  padding-top: 10px;
  min-width: 0;
}

.page-about .ab-hero__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(21px, 3.4vw, 28px);
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-about .ab-hero__label {
  display: block;
  margin-top: 5px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--gray);
}

/* ---------- 缘起 ---------- */

.page-about .ab-origin {
  background: var(--off);
  color: var(--ink);
  padding: clamp(44px, 7vw, 92px) 0;
  background-image: radial-gradient(rgba(110, 118, 129, 0.22) 1px, transparent 1px);
  background-size: 22px 22px;
}

.page-about .ab-origin__grid {
  display: grid;
  gap: 26px;
}

@media (min-width: 900px) {
  .page-about .ab-origin__grid {
    grid-template-columns: 1.6fr 1fr;
    gap: 52px;
    align-items: start;
  }
}

.page-about .ab-origin .eyebrow {
  color: var(--clay);
}

.page-about .ab-origin .h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.015em;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.24;
  color: var(--ink);
}

.page-about .ab-origin .body {
  font-size: 16px;
  line-height: 1.78;
  color: #26313d;
  margin: 16px 0 0;
  max-width: 44em;
}

.page-about .ab-origin__aside {
  background: var(--ink);
  color: var(--off);
  padding: 22px 22px 26px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ab-cut)), calc(100% - var(--ab-cut)) 100%, 0 100%);
  border-left: 3px solid var(--clay);
}

.page-about .ab-origin__aside-tag {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-about .ab-origin__aside .body {
  color: var(--off-soft);
  font-size: 15px;
  margin-top: 12px;
}

/* ---------- 服务理念 ---------- */

.page-about .ab-principles {
  background: linear-gradient(155deg, var(--navy-700) 0%, var(--ink) 62%, var(--ink-deep) 100%);
  color: var(--off);
  padding: clamp(44px, 7vw, 92px) 0;
}

.page-about .ab-principles .eyebrow {
  color: var(--amber);
}

.page-about .ab-principles .h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.015em;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.24;
  color: var(--off);
}

.page-about .ab-principles__list {
  display: grid;
  gap: 1px;
  background: var(--line-blue);
  border: 1px solid var(--line-blue);
  margin-top: 32px;
}

@media (min-width: 880px) {
  .page-about .ab-principles__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .ab-principle {
  position: relative;
  background: var(--ink);
  padding: 26px 22px 32px;
  overflow: hidden;
}

.page-about .ab-principle::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s ease;
}

.page-about .ab-principle:hover::after,
.page-about .ab-principle.is-visible::after {
  transform: scaleX(1);
}

.page-about .ab-principle__idx {
  display: block;
  font-size: clamp(30px, 5vw, 44px);
  line-height: 1;
  color: var(--clay);
  letter-spacing: 0.02em;
}

.page-about .ab-principle .h3 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.35;
  color: var(--off);
}

.page-about .ab-principle .body {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--off-soft);
}

/* ---------- 发展历程 ---------- */

.page-about .ab-milestones {
  background: var(--off);
  color: var(--ink);
  padding: clamp(44px, 7vw, 92px) 0;
}

.page-about .ab-milestones .eyebrow {
  color: var(--clay);
}

.page-about .ab-milestones .h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.015em;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.24;
  color: var(--ink);
}

.page-about .ab-milestones .section-head .body {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: #26313d;
  max-width: 46em;
}

.page-about .ab-milestone-fig {
  margin: clamp(26px, 4vw, 40px) 0 0;
}

.page-about .ab-milestone-fig .figure__media {
  border: 1px solid var(--line-blue);
  background: var(--ink);
}

.page-about .ab-milestone-fig .figure__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gray);
}

.page-about .ab-timeline {
  margin-top: clamp(28px, 4vw, 44px);
}

.page-about .ab-timeline__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding-bottom: 20px;
}

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

@media (min-width: 760px) {
  .page-about .ab-timeline__item {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 26px;
    padding-bottom: 28px;
  }
}

.page-about .ab-timeline__rail {
  position: relative;
  display: flex;
  justify-content: center;
}

.page-about .ab-timeline__rail::before {
  content: "";
  position: absolute;
  top: 24px;
  bottom: -28px;
  left: 50%;
  width: 1px;
  background: var(--line-blue);
  transform: translateX(-50%);
}

.page-about .ab-timeline__item:last-child .ab-timeline__rail::before {
  display: none;
}

.page-about .ab-timeline__node {
  position: relative;
  z-index: 1;
  display: block;
  width: 12px;
  height: 12px;
  margin-top: 7px;
  border-radius: 50%;
  background: var(--clay);
  box-shadow: 0 0 0 4px var(--off);
}

.page-about .ab-timeline__node--now {
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border-radius: 0;
  background: var(--cyan);
  box-shadow: none;
  clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 6px, 100% 100%, 6px 100%, 0 calc(100% - 6px));
}

.page-about .ab-timeline__card {
  padding: 18px 20px 22px;
}

.page-about .ab-timeline__card--dark {
  background: var(--ink);
  color: var(--off);
  clip-path: polygon(0 0, calc(100% - var(--ab-cut)) 0, 100% var(--ab-cut), 100% 100%, 0 100%);
}

.page-about .ab-timeline__card--light {
  background: #ffffff;
  color: var(--ink);
  border: 1px solid var(--off-soft);
  border-left: 3px solid var(--clay);
}

.page-about .ab-timeline__card--now {
  border-left-color: var(--cyan);
  box-shadow: 0 10px 28px rgba(14, 27, 42, 0.09);
}

.page-about .ab-timeline__tag {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-about .ab-timeline__card--dark .ab-timeline__tag {
  color: var(--amber);
}

.page-about .ab-timeline__card--light .ab-timeline__tag {
  color: var(--clay);
}

.page-about .ab-timeline__card--now .ab-timeline__tag {
  color: var(--moss);
}

.page-about .ab-timeline__card .h3 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 2.1vw, 21px);
  line-height: 1.36;
}

.page-about .ab-timeline__card--dark .h3 {
  color: var(--off);
}

.page-about .ab-timeline__card--light .h3 {
  color: var(--ink);
}

.page-about .ab-timeline__card .body {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.78;
  max-width: 46em;
}

.page-about .ab-timeline__card--dark .body {
  color: var(--off-soft);
}

.page-about .ab-timeline__card--light .body {
  color: #26313d;
}

/* ---------- 团队与质控 ---------- */

.page-about .ab-team {
  background: var(--ink);
  color: var(--off);
  padding: clamp(44px, 7vw, 92px) 0;
  position: relative;
  overflow: hidden;
}

.page-about .ab-team::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    -45deg,
    rgba(36, 64, 90, 0.42) 0 1px,
    transparent 1px 16px
  );
  opacity: 0.5;
  pointer-events: none;
}

.page-about .ab-team .container {
  position: relative;
  z-index: 1;
}

.page-about .ab-team .eyebrow {
  color: var(--cyan);
}

.page-about .ab-team .h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.015em;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.24;
  color: var(--off);
}

.page-about .ab-team .section-head .body {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--off-soft);
  max-width: 46em;
}

.page-about .ab-team__roles {
  display: grid;
  gap: 1px;
  background: var(--line-blue);
  border: 1px solid var(--line-blue);
  margin-top: 32px;
}

@media (min-width: 640px) {
  .page-about .ab-team__roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .page-about .ab-team__roles {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .ab-role {
  background: var(--navy-700);
  padding: 22px 20px 26px;
}

.page-about .ab-role__num {
  display: block;
  font-size: clamp(26px, 4vw, 36px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-about .ab-role .h4 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.01em;
  color: var(--off);
}

.page-about .ab-role .body {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--off-soft);
}

.page-about .ab-quality {
  margin-top: clamp(34px, 5vw, 54px);
  display: grid;
  gap: 26px;
}

@media (min-width: 940px) {
  .page-about .ab-quality {
    grid-template-columns: 1.05fr 1fr;
    gap: 46px;
    align-items: start;
  }
}

.page-about .ab-quality__intro {
  grid-column: 1;
}

.page-about .ab-quality__intro .h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.35;
  color: var(--off);
}

.page-about .ab-quality__intro .body {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--off-soft);
  max-width: 42em;
}

.page-about .ab-flow {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}

.page-about .ab-flow__step {
  border: 1px solid var(--line-blue);
  background: rgba(22, 41, 61, 0.86);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.page-about .ab-flow__step summary {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  cursor: pointer;
  list-style: none;
  color: var(--off);
}

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

.page-about .ab-flow__step summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-about .ab-flow__idx {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--clay);
}

.page-about .ab-flow__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.01em;
}

.page-about .ab-flow__hint {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gray);
  white-space: nowrap;
}

.page-about .ab-flow__step[open] {
  border-color: var(--cyan);
}

.page-about .ab-flow__step[open] .ab-flow__hint {
  color: var(--cyan);
}

.page-about .ab-flow__items {
  margin: 0;
  padding: 0 18px 18px 44px;
  list-style: none;
}

.page-about .ab-flow__items li {
  position: relative;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--off-soft);
  padding: 5px 0;
}

.page-about .ab-flow__items li::before {
  content: "";
  position: absolute;
  left: -18px;
  top: 15px;
  width: 8px;
  height: 8px;
  background: var(--cyan);
  clip-path: polygon(0 0, calc(100% - 3px) 0, 100% 3px, 100% 100%, 0 100%);
}

.page-about .ab-quality__fig {
  grid-column: 1 / -1;
  margin: 0;
}

@media (min-width: 940px) {
  .page-about .ab-quality__fig {
    grid-column: 2;
    grid-row: 1 / span 2;
    margin-top: 0;
  }
}

.page-about .ab-quality__fig .figure__media {
  border: 1px solid var(--line-blue);
  background: var(--ink-deep);
}

.page-about .ab-quality__fig .figure__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gray);
}

/* ---------- 覆盖与协作 ---------- */

.page-about .ab-coverage {
  background: var(--off);
  color: var(--ink);
  padding: clamp(44px, 7vw, 92px) 0;
}

.page-about .ab-coverage__grid {
  display: grid;
  gap: 30px;
}

@media (min-width: 960px) {
  .page-about .ab-coverage__grid {
    grid-template-columns: 1.2fr 1fr;
    gap: 54px;
    align-items: start;
  }
}

.page-about .ab-coverage .eyebrow {
  color: var(--clay);
}

.page-about .ab-coverage .h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.015em;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.24;
  color: var(--ink);
}

.page-about .ab-coverage .body {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: #26313d;
  max-width: 44em;
}

.page-about .ab-coverage__facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--off-soft);
  border: 1px solid var(--off-soft);
}

.page-about .ab-coverage__facts li {
  background: var(--off);
  padding: 16px 14px 18px;
  min-width: 0;
}

.page-about .ab-fact__num {
  display: block;
  font-size: clamp(24px, 3.4vw, 32px);
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-about .ab-fact__unit {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--gray);
  margin-left: 3px;
}

.page-about .ab-fact__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.55;
  color: #47535f;
}

.page-about .ab-coverage__fig {
  margin: 0;
}

.page-about .ab-coverage__fig .figure__media {
  border: 1px solid var(--line-blue);
  background: var(--navy-700);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ab-cut)), calc(100% - var(--ab-cut)) 100%, 0 100%);
}

.page-about .ab-coverage__fig .figure__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gray);
}

/* ---------- 下一步 ---------- */

.page-about .ab-next {
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-deep) 100%);
  color: var(--off);
  padding: clamp(44px, 7vw, 92px) 0 clamp(50px, 8vw, 104px);
}

.page-about .ab-next .eyebrow {
  color: var(--amber);
}

.page-about .ab-next .h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.015em;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.24;
  color: var(--off);
}

.page-about .ab-next__grid {
  display: grid;
  gap: 1px;
  background: var(--line-blue);
  border: 1px solid var(--line-blue);
  margin-top: 32px;
}

@media (min-width: 700px) {
  .page-about .ab-next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .ab-next__item {
  background: var(--ink);
  padding: 24px 22px 28px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-about .ab-next__item .h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 0.01em;
  color: var(--off);
}

.page-about .ab-next__item .body {
  margin: 10px 0 20px;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--off-soft);
  flex: 1 1 auto;
}

.page-about .ab-next__item .btn {
  margin-top: auto;
}

/* ---------- 图片通用兜底 ---------- */

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

/* ---------- 减少动效偏好 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-principle::after {
    transition: none;
  }
  .page-about .ab-principle.is-visible::after {
    transform: scaleX(1);
  }
}

/* ---------- 窄屏兜底 ---------- */

@media (max-width: 420px) {
  .page-about .ab-hero__stats,
  .page-about .ab-coverage__facts {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-about .ab-flow__step summary {
    grid-template-columns: 32px minmax(0, 1fr);
    row-gap: 4px;
  }

  .page-about .ab-flow__hint {
    grid-column: 2;
    white-space: normal;
  }
}

.page-about * {
  min-width: 0;
}