/* ===== 品牌坐标（/values/）页面专属样式 ===== */

.page-about {
  --about-rule: rgba(201, 210, 218, .16);
  --about-ghost: rgba(55, 224, 200, .09);
}

/* ---------- 通用排版约束 ---------- */
.page-about img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-about .media__frame {
  border: var(--line);
  background: var(--deep);
  overflow: hidden;
  border-radius: var(--radius);
}

.page-about .media__frame img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .media__caption {
  margin-top: var(--sp-2);
  font-size: .85rem;
  line-height: 1.7;
  color: var(--deep);
}

.page-about .section--night .section-title,
.page-about .section--deep .section-title {
  color: var(--warm);
}

.page-about .section--night .lede,
.page-about .section--deep .lede {
  color: var(--silver);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding-bottom: var(--sp-5);
  color: var(--warm);
  background:
    radial-gradient(120% 78% at 84% 0%, rgba(55, 224, 200, .16), transparent 60%),
    linear-gradient(180deg, var(--night) 0%, var(--polar) 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, var(--about-rule) 0 1px, transparent 1px 140px),
    repeating-linear-gradient(0deg, var(--about-rule) 0 1px, transparent 1px 140px);
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 2;
}

.page-about .about-hero__ghost {
  position: absolute;
  right: -1vw;
  bottom: -2vw;
  z-index: 1;
  font-size: clamp(6rem, 24vw, 17rem);
  font-weight: 900;
  line-height: .78;
  letter-spacing: .02em;
  color: var(--about-ghost);
  font-variant-numeric: tabular-nums;
  pointer-events: none;
  user-select: none;
}

.page-about .about-hero__coord {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-1) 10px;
  margin: var(--sp-3) 0 var(--sp-2);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--aurora);
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__slash {
  color: var(--mist);
}

.page-about .about-hero__title {
  margin: 0;
  max-width: 15em;
  font-size: clamp(2.1rem, 7vw, 4.4rem);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: .06em;
}

.page-about .about-hero__lede {
  margin: var(--sp-3) 0 0;
  max-width: 46em;
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  line-height: 1.85;
  color: var(--silver);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

/* 页内导航 */
.page-about .about-toc {
  margin-top: var(--sp-5);
  padding-top: var(--sp-3);
  border-top: var(--line-dark);
}

.page-about .about-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-1) var(--sp-3);
}

.page-about .about-toc__link {
  display: inline-flex;
  align-items: baseline;
  gap: var(--sp-1);
  padding: 6px 0;
  font-size: .95rem;
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  color: var(--aurora);
  border-bottom-color: var(--aurora);
}

.page-about .about-toc__no {
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--aurora);
  font-variant-numeric: tabular-nums;
}

/* ---------- 坐标的由来 ---------- */
.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
}

.page-about .about-origin__text p {
  margin: 0 0 1.2em;
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--deep);
}

.page-about .about-origin__text .section-title {
  margin-bottom: var(--sp-3);
}

.page-about .about-origin__points {
  list-style: none;
  margin: var(--sp-4) 0 0;
  padding: var(--sp-3) 0 0;
  border-top: var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
}

.page-about .about-origin__points li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: .9rem;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-about .about-origin__num {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 900;
  line-height: 1;
  color: var(--night);
  font-variant-numeric: tabular-nums;
}

.page-about .about-origin__media {
  margin: 0;
}

.page-about .about-origin__media .media__frame {
  box-shadow: var(--shadow-hard);
}

/* ---------- 三类使用者 ---------- */
.page-about .about-audience__list {
  list-style: none;
  margin: var(--sp-4) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
}

.page-about .about-card {
  position: relative;
  padding: var(--sp-3);
  background: var(--warm);
  border: var(--line);
  border-radius: var(--radius);
  color: var(--night);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-card:hover {
  border-color: var(--aurora);
  box-shadow: 6px 6px 0 var(--aurora);
}

.page-about .about-card__no {
  display: inline-block;
  margin-bottom: var(--sp-2);
  padding: 3px 9px;
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--night);
  background: var(--aurora);
  border-radius: var(--radius);
  font-variant-numeric: tabular-nums;
}

.page-about .about-card__title {
  margin: 0 0 var(--sp-2);
  font-size: clamp(1.08rem, 2.2vw, 1.32rem);
  line-height: 1.45;
  letter-spacing: .02em;
  color: var(--night);
}

.page-about .about-card__text {
  margin: 0 0 var(--sp-3);
  font-size: .96rem;
  line-height: 1.8;
  color: var(--deep);
}

.page-about .about-card__link {
  display: inline-block;
  font-size: .92rem;
  font-weight: 700;
  color: var(--night);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 2px solid var(--aurora);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-card__link:hover {
  color: var(--deep);
  border-bottom-color: var(--maple);
}

/* ---------- 发展历程 ---------- */
.page-about .about-history__lede {
  max-width: 40em;
}

.page-about .about-history__media {
  margin: var(--sp-4) 0 0;
}

.page-about .about-history .media__caption {
  color: var(--silver);
}

.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: var(--sp-5) 0 0;
  padding: 0;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--aurora) 0%, var(--glacier) 55%, rgba(126, 182, 224, 0) 100%);
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 48px;
  padding-bottom: var(--sp-4);
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 24px;
  height: 24px;
  background: var(--polar);
  border: 2px solid var(--aurora);
  box-shadow: 0 0 0 5px var(--deep);
  transition: background var(--dur) var(--ease);
}

.page-about .about-timeline__item:hover::before {
  background: var(--aurora);
}

.page-about .about-timeline__year {
  display: block;
  margin-bottom: 6px;
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: .14em;
  color: var(--aurora);
  font-variant-numeric: tabular-nums;
}

.page-about .about-timeline__title {
  margin: 0 0 var(--sp-1);
  font-size: clamp(1.05rem, 2.2vw, 1.28rem);
  letter-spacing: .03em;
  color: var(--warm);
}

.page-about .about-timeline__text {
  margin: 0;
  max-width: 54em;
  font-size: .96rem;
  line-height: 1.8;
  color: var(--silver);
}

.page-about .about-timeline__more {
  margin-top: var(--sp-2);
  padding-left: var(--sp-2);
  border-left: 2px solid var(--glacier);
}

.page-about .about-timeline__more summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-size: .88rem;
  letter-spacing: .08em;
  color: var(--glacier);
  list-style: none;
  transition: color var(--dur) var(--ease);
}

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

.page-about .about-timeline__more summary::before {
  content: "+";
  font-weight: 700;
  color: var(--aurora);
  font-variant-numeric: tabular-nums;
}

.page-about .about-timeline__more[open] summary::before {
  content: "−";
}

.page-about .about-timeline__more summary:hover {
  color: var(--aurora);
}

.page-about .about-timeline__more p {
  margin: var(--sp-2) 0 0;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--silver);
}

/* ---------- 团队与能力 ---------- */
.page-about .about-team__lede {
  max-width: 44em;
}

.page-about .about-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
  margin-top: var(--sp-4);
}

.page-about .about-team__media {
  margin: 0;
}

.page-about .about-team__media .media__frame {
  box-shadow: var(--shadow-hard);
}

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

.page-about .about-team__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-about .about-team__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-1);
  padding-bottom: var(--sp-2);
  border-bottom: var(--line);
}

.page-about .about-team__tab {
  cursor: pointer;
  padding: 8px 14px;
  font-size: .92rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--deep);
  background: transparent;
  border: 2px solid var(--silver);
  border-radius: var(--radius);
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-team__tab:hover {
  color: var(--night);
  border-color: var(--aurora);
}

.page-about .about-team__radio:focus-visible ~ .about-team__tabs .about-team__tab {
  outline: 2px dashed var(--aurora);
  outline-offset: 3px;
}

.page-about #about-team-product:checked ~ .about-team__tabs [for="about-team-product"],
.page-about #about-team-index:checked ~ .about-team__tabs [for="about-team-index"],
.page-about #about-team-success:checked ~ .about-team__tabs [for="about-team-success"],
.page-about #about-team-legal:checked ~ .about-team__tabs [for="about-team-legal"] {
  color: var(--frost);
  background: var(--night);
  border-color: var(--night);
}

.page-about .about-team__panels {
  margin-top: var(--sp-3);
  padding: var(--sp-3);
  background: var(--frost);
  border: var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
}

.page-about .about-team__panel {
  display: none;
}

.page-about #about-team-product:checked ~ .about-team__panels .about-team__panel--product,
.page-about #about-team-index:checked ~ .about-team__panels .about-team__panel--index,
.page-about #about-team-success:checked ~ .about-team__panels .about-team__panel--success,
.page-about #about-team-legal:checked ~ .about-team__panels .about-team__panel--legal {
  display: block;
}

.page-about .about-team__panel h3 {
  margin: 0 0 var(--sp-2);
  font-size: 1.15rem;
  letter-spacing: .04em;
  color: var(--night);
}

.page-about .about-team__panel p {
  margin: 0 0 var(--sp-2);
  font-size: .97rem;
  line-height: 1.85;
  color: var(--deep);
}

.page-about .about-team__panel p:last-child {
  margin-bottom: 0;
}

/* ---------- 行业分布 ---------- */
.page-about .about-eco__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
  margin-top: var(--sp-4);
}

.page-about .about-eco__stat {
  padding-left: var(--sp-3);
  border-left: 6px solid var(--aurora);
}

.page-about .about-eco__num {
  display: block;
  font-size: clamp(3rem, 12vw, 6.2rem);
  font-weight: 900;
  line-height: .9;
  letter-spacing: .02em;
  color: var(--warm);
  font-variant-numeric: tabular-nums;
}

.page-about .about-eco__unit {
  display: block;
  margin-top: var(--sp-1);
  font-size: .9rem;
  letter-spacing: .12em;
  color: var(--glacier);
}

.page-about .about-bar {
  display: grid;
  grid-template-columns: 6.6em minmax(0, 1fr) 3.4em;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) 0;
  border-bottom: 1px solid rgba(201, 210, 218, .18);
}

.page-about .about-bar:first-child {
  border-top: 1px solid rgba(201, 210, 218, .18);
}

.page-about .about-bar__label {
  font-size: .9rem;
  color: var(--silver);
}

.page-about .about-bar__track {
  display: block;
  height: 10px;
  background: rgba(201, 210, 218, .12);
  border: 1px solid rgba(201, 210, 218, .24);
}

.page-about .about-bar__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--aurora) 0%, var(--glacier) 100%);
}

.page-about .about-bar__fill--27 { width: 27%; }
.page-about .about-bar__fill--22 { width: 22%; }
.page-about .about-bar__fill--19 { width: 19%; }
.page-about .about-bar__fill--rest { width: 32%; background: var(--silver); }

.page-about .about-bar__val {
  text-align: right;
  font-size: .94rem;
  font-weight: 700;
  color: var(--warm);
  font-variant-numeric: tabular-nums;
}

.page-about .about-eco__note {
  margin-top: var(--sp-4);
  padding-top: var(--sp-3);
  border-top: var(--line-dark);
  font-size: .98rem;
  line-height: 1.85;
  color: var(--silver);
}

/* ---------- 服务承诺 ---------- */
.page-about .about-promise__list {
  list-style: none;
  margin: var(--sp-4) 0 0;
  padding: 0;
  border-top: var(--line);
}

.page-about .about-promise__item {
  display: grid;
  gap: var(--sp-1);
  padding: var(--sp-3) 0;
  border-bottom: var(--line);
}

.page-about .about-promise__title {
  margin: 0;
  font-size: 1.1rem;
  letter-spacing: .06em;
  color: var(--night);
}

.page-about .about-promise__title::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 2px;
  margin-right: 10px;
  vertical-align: middle;
  background: var(--aurora);
}

.page-about .about-promise__item p {
  margin: 0;
  font-size: .98rem;
  line-height: 1.85;
  color: var(--deep);
}

.page-about .about-promise__cta {
  margin: var(--sp-4) 0 0;
  padding: var(--sp-3);
  font-size: .98rem;
  line-height: 1.8;
  color: var(--deep);
  background: var(--frost);
  border-left: 6px solid var(--maple);
}

.page-about .about-promise__cta a {
  color: var(--night);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--maple);
  transition: color var(--dur) var(--ease);
}

.page-about .about-promise__cta a:hover {
  color: var(--maple);
}

/* ---------- 收尾 ---------- */
.page-about .about-close {
  position: relative;
  overflow: hidden;
  padding: var(--sp-5) 0 var(--sp-6);
  color: var(--warm);
  background: var(--polar);
}

.page-about .about-close::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(135deg, rgba(55, 224, 200, .07) 0 2px, transparent 2px 26px);
}

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

.page-about .about-close__title {
  margin: 0;
  font-size: clamp(1.6rem, 4.5vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: .06em;
}

.page-about .about-close__text {
  margin: var(--sp-2) 0 0;
  max-width: 46em;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-about .about-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-toc__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-about .about-promise__item {
    grid-template-columns: minmax(0, 3fr) minmax(0, 7fr);
    gap: var(--sp-4);
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-about .about-audience__list {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    align-items: start;
  }

  .page-about .about-audience__item:nth-child(1) {
    grid-column: 1 / 6;
  }

  .page-about .about-audience__item:nth-child(2) {
    grid-column: 7 / 13;
  }

  .page-about .about-audience__item:nth-child(3) {
    grid-column: 5 / 11;
    margin-top: var(--sp-3);
  }

  .page-about .about-eco__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: var(--sp-5);
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: var(--sp-5);
    align-items: start;
  }

  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--sp-5);
    align-items: start;
  }

  .page-about .about-timeline__item {
    padding-left: 72px;
  }

  .page-about .about-timeline::before {
    left: 17px;
  }

  .page-about .about-timeline__item::before {
    left: 6px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-toc__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-card,
  .page-about .about-toc__link,
  .page-about .about-card__link,
  .page-about .about-team__tab,
  .page-about .about-timeline__item::before,
  .page-about .about-timeline__more summary,
  .page-about .about-promise__cta a {
    transition: none;
  }

  .page-about .about-card:hover {
    box-shadow: none;
  }
}