/* ===== 页面作用域：.page-about ===== */
.page-about {
  background: var(--paper-100);
  color: var(--ink-900);
}

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

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(110% 85% at 88% 4%, rgba(200, 150, 62, 0.22) 0%, rgba(200, 150, 62, 0) 58%),
    linear-gradient(158deg, var(--ink-900) 0%, var(--ink-700) 66%, var(--ink-900) 100%);
  color: var(--paper-100);
  padding-block: clamp(28px, 4.6vw, 64px) clamp(88px, 11vw, 148px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: clamp(44px, 7vw, 96px);
  background: var(--paper-100);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  pointer-events: none;
  z-index: 2;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -10%;
  top: 14%;
  width: 44%;
  height: 58%;
  border: 1px dashed rgba(227, 196, 138, 0.26);
  border-radius: 54% 40% 58% 44% / 44% 56% 42% 52%;
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 52px);
  align-items: start;
}

@media (min-width: 920px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

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

/* 面包屑反色 */
.page-about .about-hero .breadcrumb__list {
  color: rgba(247, 243, 234, 0.55);
}
.page-about .about-hero .breadcrumb__link {
  color: var(--gold-300);
}
.page-about .about-hero .breadcrumb__link:hover {
  color: var(--gold-500);
}
.page-about .about-hero .breadcrumb__sep,
.page-about .about-hero .breadcrumb__item {
  color: rgba(247, 243, 234, 0.55);
}

.page-about .about-code {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.09em;
  color: rgba(227, 196, 138, 0.72);
}

.page-about .about-code .num {
  color: var(--paper-100);
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(227, 196, 138, 0.5);
}

.page-about .about-hero h1 {
  margin: 16px 0 20px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(2.3rem, 6.4vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 34em;
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.3vw, 1.14rem);
  line-height: 1.9;
  color: rgba(247, 243, 234, 0.86);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: clamp(26px, 3vw, 40px) 0 0;
  padding: clamp(20px, 2.4vw, 28px) 0 0;
  border-top: 1px dashed rgba(227, 196, 138, 0.3);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 22px;
}

@media (min-width: 620px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-hero__fact-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 2.3vw, 1.85rem);
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--gold-300);
}

.page-about .about-hero__fact-label {
  display: block;
  margin-top: 7px;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: rgba(247, 243, 234, 0.58);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 36px);
}

/* 首屏图 */
.page-about .about-hero__media {
  margin: 0;
  min-width: 0;
}

@media (min-width: 920px) {
  .page-about .about-hero__media {
    margin-top: clamp(36px, 4vw, 64px);
    margin-right: calc(-1 * clamp(0px, 3.5vw, 48px));
  }
}

.page-about .about-hero__media .media-frame__inner {
  border: 1px solid rgba(227, 196, 138, 0.34);
  border-radius: var(--radius);
  background: rgba(247, 243, 234, 0.06);
}

.page-about .about-hero__media .media-frame__cap {
  color: rgba(247, 243, 234, 0.6);
}

/* ---------- 章节通用留白 ---------- */
.page-about .about-scope,
.page-about .about-history,
.page-about .about-flow,
.page-about .about-accuracy,
.page-about .about-team,
.page-about .about-partners,
.page-about .about-honors,
.page-about .about-cta {
  padding-block: clamp(48px, 6.6vw, 104px);
}

.page-about .about-accuracy {
  background: linear-gradient(180deg, var(--paper-200) 0%, var(--paper-100) 100%);
}

/* ---------- 章节 01 ---------- */
.page-about .about-scope__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 40px);
}

@media (min-width: 900px) {
  .page-about .about-scope__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

.page-about .about-scope__body p {
  margin: 0 0 16px;
  max-width: var(--measure);
  font-size: 1rem;
  line-height: 1.9;
  color: var(--ink-500);
}

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

.page-about .about-tracks {
  list-style: none;
  margin: clamp(28px, 3.6vw, 48px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: track;
  grid-template-columns: minmax(0, 1fr);
}

@media (min-width: 780px) {
  .page-about .about-tracks {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

.page-about .about-tracks__item {
  position: relative;
  margin: 0;
  padding: 20px 22px 20px 62px;
  background: var(--white);
  border: 1px solid rgba(47, 74, 110, 0.16);
  border-left: 3px solid var(--gold-500);
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.page-about .about-tracks__item:hover {
  border-color: rgba(200, 150, 62, 0.55);
  box-shadow: var(--shadow);
}

.page-about .about-tracks__item::before {
  counter-increment: track;
  content: "0" counter(track);
  position: absolute;
  left: 20px;
  top: 22px;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  letter-spacing: 0.06em;
  color: var(--gold-500);
}

.page-about .about-tracks__item h3 {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -0.005em;
  color: var(--ink-900);
}

.page-about .about-tracks__item p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.82;
  color: var(--ink-500);
}

/* ---------- 章节 02 时间轴 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: clamp(30px, 4vw, 56px) 0 0;
  padding: 0;
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 18px;
  padding-bottom: clamp(26px, 3.2vw, 42px);
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 20px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, rgba(200, 150, 62, 0.6), rgba(200, 150, 62, 0.08));
}

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

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

.page-about .about-timeline__mark {
  width: 14px;
  height: 14px;
  margin: 6px auto 0;
  border-radius: 50%;
  background: var(--paper-100);
  border: 2px solid var(--gold-500);
  position: relative;
  z-index: 1;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.page-about .about-timeline__item:hover .about-timeline__mark,
.page-about .about-timeline__item:focus-within .about-timeline__mark {
  background: var(--signal);
  border-color: var(--signal);
  transform: scale(1.15);
}

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

.page-about .about-timeline__era {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.07em;
  color: var(--gold-500);
}

.page-about .about-timeline__title {
  margin: 0 0 10px;
  font-family: var(--font-heading);
  font-size: clamp(1.1rem, 1.9vw, 1.42rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-about .about-timeline__text {
  margin: 0;
  max-width: var(--measure);
  font-size: 0.96rem;
  line-height: 1.88;
  color: var(--ink-500);
}

.page-about .about-timeline__note {
  margin: 0;
  max-width: var(--measure);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--slate);
  border-left: 2px solid var(--gold-300);
  padding-left: 12px;
}

@media (min-width: 900px) {
  .page-about .about-timeline__note {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    padding-left: 0;
    border-left-width: 0;
    margin-top: 0;
    transition: max-height 220ms ease, opacity 200ms ease, padding-left 220ms ease, margin-top 220ms ease, border-left-width 220ms ease;
  }
  .page-about .about-timeline__item:hover .about-timeline__note,
  .page-about .about-timeline__item:focus-within .about-timeline__note {
    max-height: 7em;
    opacity: 1;
    padding-left: 12px;
    border-left-width: 2px;
    margin-top: 12px;
  }
}

/* ---------- 章节 03 流程 ---------- */
.page-about .about-flow__figure {
  margin: clamp(26px, 3.4vw, 44px) 0 clamp(28px, 3.6vw, 48px);
}

.page-about .about-flow__figure .media-frame__inner {
  border: 1px solid rgba(47, 74, 110, 0.18);
  border-radius: var(--radius);
  background: var(--paper-200);
}

.page-about .about-flow__tabs {
  margin-top: clamp(20px, 3vw, 34px);
}

.page-about .about-flow__tabs .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-flow__tabs .tabs__tab {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  padding: 10px 15px;
  border: 1px solid rgba(47, 74, 110, 0.22);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--ink-700);
  cursor: pointer;
  transition: border-color 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

.page-about .about-flow__tabs .tabs__tab:hover {
  border-color: var(--gold-500);
  color: var(--ink-900);
}

.page-about .about-flow__tabs .tabs__tab[aria-selected="true"] {
  border-color: var(--gold-500);
  color: var(--ink-900);
  box-shadow: inset 0 -3px 0 var(--gold-500);
}

.page-about .about-flow__panel {
  margin-top: 20px;
  padding: clamp(20px, 2.6vw, 32px);
  background: var(--paper-200);
  border-left: 4px solid var(--gold-500);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-about .about-flow__panel-title {
  margin: 0 0 12px;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink-900);
}

.page-about .about-flow__panel p {
  margin: 0;
  max-width: var(--measure);
  font-size: 0.96rem;
  line-height: 1.88;
  color: var(--ink-700);
}

.page-about .about-flow__code {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 18px;
  padding: 10px 14px;
  background: var(--white);
  border: 1px dashed var(--gold-500);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  color: var(--ink-900);
}

/* ---------- 章节 04 数据条 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(26px, 3.4vw, 46px);
  background: rgba(47, 74, 110, 0.2);
  border: 1px solid rgba(47, 74, 110, 0.2);
  border-radius: var(--radius);
  overflow: hidden;
}

@media (min-width: 820px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-stats__item {
  background: var(--paper-100);
  padding: clamp(18px, 2.2vw, 28px) clamp(16px, 2vw, 22px);
}

.page-about .about-stats__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-about .about-stats__value em {
  font-style: normal;
  margin-left: 4px;
  font-size: 0.5em;
  color: var(--gold-500);
}

.page-about .about-stats__value--verify {
  color: var(--verify);
}

.page-about .about-stats__label {
  display: block;
  margin-top: 9px;
  font-size: 0.82rem;
  line-height: 1.62;
  color: var(--slate);
}

.page-about .about-gates {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.6vw, 30px);
  margin-top: clamp(28px, 3.6vw, 46px);
}

@media (min-width: 780px) {
  .page-about .about-gates {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .about-gates__item {
  padding-top: 18px;
  border-top: 2px solid var(--ink-900);
}

.page-about .about-gates__tag {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--gold-500);
}

.page-about .about-gates__title {
  margin: 0 0 10px;
  font-family: var(--font-heading);
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--ink-900);
}

.page-about .about-gates__item p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.86;
  color: var(--ink-500);
}

/* ---------- 章节 05 团队 ---------- */
.page-about .about-team__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3vw, 40px);
  margin-top: clamp(28px, 3.6vw, 48px);
}

@media (min-width: 1040px) {
  .page-about .about-team__layout {
    grid-template-columns: minmax(0, 1fr) minmax(236px, 300px);
    align-items: start;
  }
}

.page-about .about-team__cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  min-width: 0;
}

@media (min-width: 700px) {
  .page-about .about-team__cards {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }
  .page-about .about-team__card--index {
    grid-column: span 7;
  }
  .page-about .about-team__card--verify {
    grid-column: span 5;
  }
  .page-about .about-team__card--tech {
    grid-column: span 5;
  }
  .page-about .about-team__card--care {
    grid-column: span 7;
  }
}

.page-about .about-team__card {
  background: var(--white);
  border: 1px solid rgba(47, 74, 110, 0.16);
  border-radius: var(--radius);
  padding: clamp(20px, 2.4vw, 28px);
  box-shadow: var(--shadow);
  transition: border-color 160ms ease;
}

.page-about .about-team__card:hover {
  border-color: var(--gold-500);
}

.page-about .about-team__card--deep {
  background: var(--paper-200);
}

.page-about .about-team__count {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 3.4vw, 2.2rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--gold-500);
}

.page-about .about-team__count small {
  margin-left: 6px;
  font-family: var(--font-heading);
  font-size: 0.42em;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--ink-500);
}

.page-about .about-team__role {
  margin: 14px 0 10px;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink-900);
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.82;
  color: var(--ink-500);
}

.page-about .about-team__aside {
  display: grid;
  gap: 18px;
  align-content: start;
  min-width: 0;
}

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

.page-about .about-team__figure .media-frame__inner {
  border: 1px solid rgba(47, 74, 110, 0.18);
  border-radius: var(--radius);
  background: var(--paper-200);
}

.page-about .about-note {
  margin: 0;
  padding: 14px 0 14px 16px;
  border-left: 3px solid var(--gold-300);
  background: linear-gradient(90deg, rgba(227, 196, 138, 0.2), rgba(227, 196, 138, 0) 78%);
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.94rem;
  line-height: 1.82;
  color: var(--ink-700);
}

/* ---------- 章节 06 合作 ---------- */
.page-about .about-partners__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin-top: clamp(26px, 3.4vw, 44px);
}

@media (min-width: 800px) {
  .page-about .about-partners__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .about-partners__card {
  background: var(--white);
  border: 1px solid rgba(47, 74, 110, 0.18);
  border-radius: var(--radius);
  padding: clamp(22px, 2.6vw, 32px);
  transition: border-color 160ms ease;
}

.page-about .about-partners__card:hover {
  border-color: var(--gold-500);
}

.page-about .about-partners__card--tech {
  background: var(--ink-900);
  border-color: transparent;
  color: var(--paper-100);
}

.page-about .about-partners__num {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 3.8vw, 2.7rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--gold-500);
}

.page-about .about-partners__card--tech .about-partners__num {
  color: var(--gold-300);
}

.page-about .about-partners__card h3 {
  margin: 0 0 12px;
  font-family: var(--font-heading);
  font-size: 1.14rem;
  font-weight: 700;
  color: var(--ink-900);
}

.page-about .about-partners__card--tech h3 {
  color: var(--white);
}

.page-about .about-partners__card p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.86;
  color: var(--ink-500);
}

.page-about .about-partners__card--tech p {
  color: rgba(247, 243, 234, 0.78);
}

/* ---------- 章节 07 资质 ---------- */
.page-about .about-honors {
  background: var(--ink-900);
  color: var(--paper-100);
}

.page-about .about-honors .section__title {
  color: var(--white);
}

.page-about .about-honors .section__lead {
  color: rgba(247, 243, 234, 0.7);
}

.page-about .about-honors .section__eyebrow {
  color: var(--gold-300);
}

.page-about .about-honors__list {
  list-style: none;
  margin: clamp(28px, 3.6vw, 48px) 0 0;
  padding: 0;
  border-top: 1px solid rgba(227, 196, 138, 0.24);
}

.page-about .about-honors__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(227, 196, 138, 0.24);
}

@media (min-width: 720px) {
  .page-about .about-honors__item {
    grid-template-columns: minmax(0, 140px) minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
    padding: 22px 0;
  }
}

.page-about .about-honors__year {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  letter-spacing: 0.06em;
  color: var(--gold-300);
}

.page-about .about-honors__text {
  margin: 0;
  max-width: 46em;
  font-size: 0.97rem;
  line-height: 1.86;
  color: rgba(247, 243, 234, 0.82);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  padding: clamp(26px, 3.4vw, 46px);
  background: var(--white);
  border: 1px dashed var(--gold-500);
  border-radius: var(--radius);
}

@media (min-width: 860px) {
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: center;
  }
}

.page-about .about-cta__title {
  margin: 0 0 12px;
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--ink-900);
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 40em;
  font-size: 0.96rem;
  line-height: 1.88;
  color: var(--ink-500);
}

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

/* ---------- 降级动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}