/* ===== 品牌中心 page-about ===== */
.page-about {
  --about-aside-w: 170px;
  padding-bottom: clamp(40px, 6vw, 88px);
}

.page-about .about-crumbbar {
  padding-top: clamp(14px, 2.4vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-top: clamp(18px, 3vw, 36px);
  isolation: isolate;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -8% -12% auto -12%;
  height: 620px;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58% 66% at 16% 4%, rgba(56, 242, 226, 0.16), transparent 70%),
    radial-gradient(52% 62% at 88% 10%, rgba(139, 92, 246, 0.2), transparent 72%);
}

.page-about .about-hero__frame {
  position: relative;
  border: 1px solid var(--line-700);
  border-radius: var(--radius);
  padding: clamp(20px, 3vw, 44px);
  background: linear-gradient(180deg, rgba(16, 26, 51, 0.86), rgba(10, 16, 36, 0.55));
  box-shadow: 0 24px 60px rgba(3, 7, 18, 0.55);
  overflow: hidden;
}

.page-about .about-hero__frame::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan-400) 22%, var(--violet-500) 62%, transparent);
  opacity: 0.6;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.2vw, 40px);
}

.page-about .about-hero__title {
  margin: 12px 0 0;
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  max-width: 22ch;
}

.page-about .about-hero__lead {
  margin: 18px 0 0;
  max-width: 60ch;
  color: var(--paper-100);
}

.page-about .about-hero__text {
  margin: 12px 0 0;
  max-width: 62ch;
  color: var(--mist-300);
  font-size: 15px;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 2.6vw, 30px);
}

/* 品牌档案卡 */
.page-about .about-file {
  position: relative;
  border: 1px solid var(--line-700);
  border-radius: var(--radius);
  padding: clamp(18px, 2.4vw, 26px);
  background: linear-gradient(180deg, #131F3C, #0E1730);
  box-shadow: 0 18px 40px rgba(4, 8, 20, 0.5);
}

.page-about .about-file::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 20px;
  width: 46px;
  height: 2px;
  background: var(--amber-400);
}

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

.page-about .about-file__list {
  margin: 16px 0 0;
  padding: 0;
}

.page-about .about-file__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--line-700);
  font-size: 14px;
}

.page-about .about-file__row:last-child {
  border-bottom: 0;
}

.page-about .about-file__row dt {
  margin: 0;
  color: var(--mist-300);
}

.page-about .about-file__row dd {
  margin: 0;
  color: var(--paper-100);
  text-align: right;
}

.page-about .about-file__note {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist-300);
}

/* 首屏数据条 */
.page-about .about-stats {
  list-style: none;
  margin: clamp(26px, 3.4vw, 40px) 0 0;
  padding: clamp(18px, 2.4vw, 28px) 0 0;
  border-top: 1px solid var(--line-700);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(14px, 2.2vw, 26px);
}

.page-about .about-stats__num {
  display: block;
  font-size: clamp(24px, 3.2vw, 36px);
  line-height: 1.1;
  color: var(--cyan-400);
}

.page-about .about-stats__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist-300);
}

/* ---------- 章节目录 ---------- */
.page-about .about-toc {
  margin-top: clamp(26px, 4vw, 46px);
}

.page-about .about-toc__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: clamp(10px, 1.8vw, 20px);
  overflow-x: auto;
  border-bottom: 1px solid var(--line-700);
  -webkit-overflow-scrolling: touch;
}

.page-about .about-toc__list::-webkit-scrollbar {
  height: 4px;
}

.page-about .about-toc__list::-webkit-scrollbar-thumb {
  background: var(--line-700);
  border-radius: 2px;
}

.page-about .about-toc__link {
  display: block;
  white-space: nowrap;
  padding: 8px 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist-300);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible,
.page-about .about-toc__link.is-active {
  color: var(--paper-100);
  border-bottom-color: var(--amber-400);
}

/* ---------- 章节通用 ---------- */
.page-about .about-chapter {
  padding: clamp(38px, 6vw, 84px) 0;
  border-top: 1px solid var(--line-700);
}

.page-about .about-chapter:first-of-type {
  border-top: 0;
}

.page-about .about-chapter__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.6vw, 30px);
}

.page-about .about-chapter__aside {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .about-chapter__no {
  font-size: clamp(38px, 5vw, 64px);
  line-height: 1;
  color: var(--line-700);
}

.page-about .about-chapter__label {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--mist-300);
}

.page-about .about-chapter__body > .zr-h2 {
  margin: 0 0 16px;
  font-size: clamp(24px, 3.2vw, 34px);
  line-height: 1.3;
}

.page-about .about-chapter__body > .zr-text {
  margin: 0 0 14px;
  max-width: 68ch;
  color: var(--mist-300);
}

.page-about .about-subtitle {
  margin: clamp(26px, 3.4vw, 40px) 0 14px;
  font-size: clamp(18px, 2vw, 22px);
}

.page-about .about-link {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 242, 226, 0.4);
  transition: color var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.page-about .about-link:hover,
.page-about .about-link:focus-visible {
  color: var(--paper-100);
  border-bottom-color: var(--amber-400);
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: clamp(20px, 3vw, 32px) 0;
  border: 1px solid var(--line-700);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-800);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.02);
}

.page-about .about-figure--a img {
  aspect-ratio: 14 / 9;
}

.page-about .about-figure--c img {
  aspect-ratio: 3 / 2;
}

.page-about .about-figure .zr-media__cap {
  padding: 12px 16px;
  margin: 0;
  font-size: 13px;
  color: var(--mist-300);
  border-top: 1px solid var(--line-700);
  background: rgba(16, 26, 51, 0.7);
}

/* ---------- 01 起点三条 ---------- */
.page-about .about-tenets {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-700);
  border: 1px solid var(--line-700);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-tenets__item {
  padding: clamp(16px, 2.2vw, 24px);
  background: var(--ink-800);
}

.page-about .about-tenets__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-family: var(--font-head);
  color: var(--paper-100);
}

.page-about .about-tenets__title::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 10px;
  vertical-align: 2px;
  background: var(--amber-400);
}

.page-about .about-tenets__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist-300);
}

/* ---------- 02 时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0 0 0 clamp(18px, 3vw, 30px);
  border-left: 1px solid var(--line-700);
}

.page-about .about-node {
  position: relative;
  padding-bottom: clamp(18px, 2.6vw, 28px);
}

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

.page-about .about-node__dot {
  position: absolute;
  left: calc(-1 * clamp(18px, 3vw, 30px) - 5px);
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 1px solid var(--cyan-400);
  box-shadow: 0 0 0 4px rgba(56, 242, 226, 0.1);
}

.page-about .about-node__stamp {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist-300);
}

.page-about .about-node__box {
  border: 1px solid var(--line-700);
  border-radius: var(--radius);
  background: rgba(16, 26, 51, 0.72);
  transition: border-color var(--speed) var(--ease), background var(--speed) var(--ease);
}

.page-about .about-node__box:hover {
  border-color: rgba(56, 242, 226, 0.45);
}

.page-about .about-node__box[open] {
  background: rgba(19, 31, 60, 0.92);
  border-color: var(--line-700);
}

.page-about .about-node__summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 14px clamp(14px, 2vw, 20px);
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-node__name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(16px, 1.8vw, 19px);
  color: var(--paper-100);
}

.page-about .about-node__hint {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist-300);
  border-bottom: 1px solid var(--line-700);
}

.page-about .about-node__box[open] .about-node__hint {
  color: var(--amber-400);
  border-bottom-color: var(--amber-400);
}

.page-about .about-node__text {
  margin: 0;
  padding: 0 clamp(14px, 2vw, 20px) clamp(16px, 2vw, 20px);
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist-300);
  max-width: 66ch;
}

/* ---------- 03 团队与流程 ---------- */
.page-about .about-team {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(12px, 1.8vw, 18px);
}

.page-about .about-team__item {
  padding: clamp(16px, 2.2vw, 22px);
  border: 1px solid var(--line-700);
  border-left: 3px solid var(--violet-500);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: linear-gradient(90deg, rgba(139, 92, 246, 0.08), transparent 60%);
}

.page-about .about-team__num {
  display: block;
  font-size: clamp(26px, 3vw, 34px);
  line-height: 1;
  color: var(--paper-100);
}

.page-about .about-team__name {
  display: block;
  margin-top: 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  color: var(--cyan-400);
}

.page-about .about-team__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist-300);
}

.page-about .about-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line-700);
}

.page-about .about-flow__step {
  padding: clamp(14px, 2vw, 20px) 0 clamp(14px, 2vw, 20px) clamp(44px, 6vw, 62px);
  border-bottom: 1px solid var(--line-700);
  position: relative;
}

.page-about .about-flow__no {
  position: absolute;
  left: 0;
  top: clamp(16px, 2vw, 22px);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--amber-400);
}

.page-about .about-flow__title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  color: var(--paper-100);
}

.page-about .about-flow__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist-300);
  max-width: 62ch;
}

/* ---------- 04 场景 ---------- */
.page-about .about-scenes {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 20px);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-scene {
  border: 1px solid var(--line-700);
  border-radius: var(--radius);
  background: var(--ink-800);
  padding: clamp(16px, 2.2vw, 22px);
  transition: transform var(--speed) var(--ease), border-color var(--speed) var(--ease), box-shadow var(--speed) var(--ease);
}

.page-about .about-scene:hover {
  transform: translateY(-3px);
  border-color: rgba(56, 242, 226, 0.4);
  box-shadow: 0 14px 30px rgba(3, 7, 18, 0.5);
}

.page-about .about-scene .zr-card__index {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist-300);
}

.page-about .about-scene .zr-card__title {
  margin: 0 0 10px;
  font-size: clamp(17px, 1.9vw, 20px);
  line-height: 1.4;
  color: var(--paper-100);
}

.page-about .about-scene .zr-card__body {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist-300);
}

.page-about .about-scene .zr-card__foot {
  margin: 0;
  font-size: 14px;
}

.page-about .about-note {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 14px clamp(14px, 2vw, 20px);
  border-left: 3px solid var(--amber-400);
  background: rgba(245, 184, 76, 0.07);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist-300);
}

/* ---------- 05 协作与荣誉 ---------- */
.page-about .about-partners {
  list-style: none;
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(12px, 1.8vw, 18px);
}

.page-about .about-partners__item {
  padding: clamp(16px, 2.2vw, 22px);
  border: 1px solid var(--line-700);
  border-radius: var(--radius);
  background: rgba(16, 26, 51, 0.6);
}

.page-about .about-partners__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  color: var(--paper-100);
}

.page-about .about-partners__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist-300);
}

.page-about .about-honors {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(12px, 1.8vw, 18px);
}

.page-about .about-honors__item {
  padding: clamp(16px, 2.2vw, 22px);
  border: 1px solid var(--line-700);
  border-radius: var(--radius);
  background: linear-gradient(140deg, rgba(56, 242, 226, 0.08), rgba(16, 26, 51, 0.9) 55%);
}

.page-about .about-honors__year {
  margin: 0;
  font-size: 22px;
  line-height: 1;
  color: var(--cyan-400);
}

.page-about .about-honors__name {
  margin: 10px 0 6px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  color: var(--paper-100);
}

.page-about .about-honors__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist-300);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  margin-top: clamp(34px, 5vw, 66px);
  border-top: 1px solid var(--line-700);
  border-bottom: 1px solid var(--line-700);
  background: linear-gradient(120deg, rgba(139, 92, 246, 0.14), rgba(56, 242, 226, 0.06) 55%, transparent);
}

.page-about .about-cta__inner {
  padding: clamp(28px, 4.4vw, 56px) 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.6vw, 32px);
}

.page-about .about-cta__text > .zr-h2 {
  margin: 10px 0 14px;
  font-size: clamp(22px, 2.8vw, 30px);
  line-height: 1.3;
}

.page-about .about-cta__text > .zr-text {
  margin: 0;
  max-width: 60ch;
  color: var(--mist-300);
}

.page-about .about-cta__copy {
  margin: 14px 0 0;
  font-size: 14px;
  color: var(--mist-300);
}

.page-about .about-copy {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--paper-100);
  background: transparent;
  border: 1px dashed var(--line-700);
  border-radius: var(--radius);
  padding: 4px 10px;
  cursor: pointer;
  transition: border-color var(--speed) var(--ease), color var(--speed) var(--ease);
}

.page-about .about-copy:hover,
.page-about .about-copy:focus-visible {
  border-color: var(--amber-400);
  color: var(--amber-400);
}

.page-about .about-copy[data-copied="true"] {
  border-color: var(--ok-400);
  color: var(--ok-400);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-tenets {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .about-partners,
  .page-about .about-honors {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-scenes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border-top: 1px solid var(--line-700);
  }

  .page-about .about-flow__step:nth-child(2n) {
    padding-right: clamp(14px, 2vw, 26px);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.9fr);
    gap: clamp(30px, 4.5vw, 60px);
    align-items: start;
  }

  .page-about .about-chapter__grid {
    grid-template-columns: var(--about-aside-w) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 64px);
  }

  .page-about .about-chapter__aside {
    display: block;
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-about .about-chapter__no {
    display: block;
    font-size: clamp(52px, 5.4vw, 76px);
  }

  .page-about .about-chapter__label {
    display: block;
    margin-top: 12px;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(240px, 0.8fr);
    align-items: center;
    gap: clamp(24px, 4vw, 56px);
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-scene,
  .page-about .about-node__box,
  .page-about .about-toc__link,
  .page-about .about-link,
  .page-about .about-copy {
    transition: none;
  }

  .page-about .about-scene:hover {
    transform: none;
  }
}