.page-about {
  background: var(--night);
  color: var(--paper);
  overflow-x: hidden;
  padding-bottom: clamp(56px, 8vw, 112px);
}

.page-about .breadcrumbs {
  padding-top: clamp(16px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: clamp(28px, 5vw, 48px);
  align-items: start;
  padding-top: clamp(24px, 4vw, 48px);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-about .about-hero__copy {
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2.4vw, 24px);
}

.page-about .about-hero .display {
  margin: 0;
  font-size: clamp(2.2rem, 7vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -0.01em;
  max-width: 15em;
}

.page-about .about-hero .lead {
  margin: 0;
  max-width: 34em;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-about .about-stat .num {
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1;
}

.page-about .about-stat__label {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

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

.page-about .about-hero__media {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-about .about-hero__caption {
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
  padding-left: 14px;
  border-left: 2px solid var(--orange);
}

.page-about .about-photo {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-panel);
  background: var(--panel);
  border: 1px solid var(--line-soft);
}

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

.page-about .about-photo--hero {
  aspect-ratio: 4 / 3;
  border-radius: var(--r-card);
}

.page-about .about-photo--wide { aspect-ratio: 3 / 2; }
.page-about .about-photo--band {
  aspect-ratio: 2 / 1;
  border-radius: var(--r-card);
}

/* ---------- 章节外壳 ---------- */
.page-about .about-chapter {
  padding: clamp(48px, 8vw, 104px) 0;
  position: relative;
}

.page-about .about-chapter--board {
  background: var(--pine);
  border-radius: var(--r-panel) var(--r-panel) 0 0;
}

.page-about .about-chapter__inner {
  display: flex;
  flex-direction: column;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .about-chapter__head {
  display: flex;
  align-items: flex-start;
  gap: clamp(14px, 2.4vw, 26px);
}

.page-about .about-chapter__index {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--data-mid);
  transition: color 0.4s var(--ease);
}

.page-about [data-chapter][data-inview="true"] .about-chapter__index {
  color: var(--orange);
}

.page-about .about-chapter__head .h-serif {
  margin: 6px 0 0;
  font-size: clamp(1.6rem, 4.2vw, 2.7rem);
  line-height: 1.14;
}

.page-about .about-chapter__lead {
  margin: 0;
  max-width: 46em;
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  line-height: 1.8;
  color: var(--data-light);
}

/* ---------- 01 品牌来处 ---------- */
.page-about .about-name__body {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-about .about-name__prose {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-about .about-name__prose p {
  margin: 0;
  max-width: 40em;
  line-height: 1.85;
  color: var(--data-light);
}

.page-about .about-quote {
  margin: 8px 0 0;
  padding: 22px 24px;
  border-left: 3px solid var(--orange);
  background: var(--veil);
  border-radius: 0 var(--r-card) var(--r-card) 0;
}

.page-about .about-quote p {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  line-height: 1.5;
  color: var(--paper);
}

.page-about .about-quote cite {
  font-style: normal;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-about .about-name__aside {
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  align-self: start;
}

.page-about .about-aside__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-aside__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-about .about-aside__list a {
  display: block;
  padding: 10px 0;
  color: var(--paper);
  text-decoration: none;
  font-size: 15px;
  border-bottom: 1px solid var(--line-soft);
  transition: color 0.25s var(--ease), padding-left 0.25s var(--ease);
}

.page-about .about-aside__list li:last-child a { border-bottom: 0; }

.page-about .about-aside__list a:hover,
.page-about .about-aside__list a:focus-visible {
  color: var(--orange);
  padding-left: 6px;
}

/* ---------- 02 团队 ---------- */
.page-about .about-roles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .about-role {
  padding: 22px 22px 24px;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-card);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .about-role__tag {
  align-self: flex-start;
  font-size: 11px;
  letter-spacing: 0.18em;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--cyan);
}

.page-about .about-role__title {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.4;
  letter-spacing: 0.01em;
}

.page-about .about-role p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-process {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
}

.page-about .about-process__media {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .about-caption {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-process__text {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .about-process__text p {
  margin: 0;
  line-height: 1.85;
  color: var(--data-light);
  font-size: 15px;
}

.page-about .about-inline-link {
  align-self: flex-start;
  color: var(--cyan);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 0.04em;
  border-bottom: 1px solid currentColor;
  padding-bottom: 3px;
}

.page-about .about-inline-link:hover,
.page-about .about-inline-link:focus-visible { color: var(--orange); }

/* ---------- 03 时间线 ---------- */
.page-about .about-band {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .about-timeline {
  margin: 0;
  padding: 0;
  list-style: none;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(to bottom, var(--line) 0%, var(--line) 82%, transparent 100%);
}

.page-about .about-node {
  position: relative;
  padding: 0 0 clamp(28px, 4vw, 44px) 44px;
}

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

.page-about .about-node__dot {
  position: absolute;
  left: 0;
  top: 2px;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--night);
  color: var(--data-mid);
  transition: color 0.4s var(--ease);
}

.page-about .about-node--current .about-node__dot { color: var(--orange); }

.page-about .about-node__body { display: flex; flex-direction: column; gap: 8px; }

.page-about .about-node__year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-about .about-node__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.4vw, 1.55rem);
  line-height: 1.35;
  color: var(--paper);
}

.page-about .about-node__body p:not(.about-node__year) {
  margin: 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 04 生态 ---------- */
.page-about .about-eco {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .about-eco__copy {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-about .about-eco__copy p {
  margin: 0;
  max-width: 40em;
  line-height: 1.85;
  color: var(--data-light);
  font-size: 15px;
}

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

.page-about .about-eco__figures li {
  padding: 18px 16px;
  background: var(--veil);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-card);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-eco__figures .num {
  font-size: clamp(1.6rem, 3.4vw, 2.2rem);
  line-height: 1;
}

.page-about .about-eco__cap {
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
}

.page-about .about-eco__note {
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  max-width: 52em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 05 服务 ---------- */
.page-about .about-pledges {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-about .about-pledge {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 16px;
  row-gap: 8px;
  padding: 22px 22px 24px;
  border-radius: var(--r-card);
  border: 1px solid var(--line-soft);
  background: linear-gradient(160deg, var(--panel) 0%, var(--night) 100%);
}

.page-about .about-pledge__no {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--orange);
  padding-top: 4px;
}

.page-about .about-pledge__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
  line-height: 1.4;
}

.page-about .about-pledge p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-pledge a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-about .about-pledge a:hover,
.page-about .about-pledge a:focus-visible { color: var(--orange); }

/* ---------- 收尾入口 ---------- */
.page-about .about-next {
  padding-top: clamp(20px, 4vw, 48px);
}

.page-about .about-next__title {
  margin: 0 0 clamp(20px, 3vw, 32px);
  font-size: clamp(1.4rem, 3.4vw, 2.1rem);
  line-height: 1.2;
}

.page-about .about-next__links {
  display: grid;
  gap: 12px;
}

.page-about .about-next__card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 22px 24px;
  border-radius: var(--r-card);
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--paper);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease), background 0.3s var(--ease);
}

.page-about .about-next__card:hover,
.page-about .about-next__card:focus-visible {
  border-color: var(--orange);
  background: var(--veil);
  transform: translateY(-3px);
}

.page-about .about-next__kicker {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-next__label {
  font-size: 15px;
  line-height: 1.6;
  color: var(--data-light);
}

/* ---------- 显现动效 ---------- */
@keyframes aboutRise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-about [data-reveal][data-inview="true"] {
  animation: aboutRise 0.6s var(--ease) both;
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal][data-inview="true"] { animation: none; }
  .page-about .about-next__card { transition: none; }
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-about .about-stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-about .about-roles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-about .about-next__links { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 860px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(36px, 5vw, 76px);
  }

  .page-about .about-hero__media { margin-top: clamp(24px, 4vw, 64px); }
  .page-about .about-photo--hero { aspect-ratio: 5 / 6; border-radius: var(--r-panel); }
  .page-about .about-stats { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .page-about .about-name__body { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); }
  .page-about .about-process { grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); }
  .page-about .about-eco { grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); }
  .page-about .about-eco__figures { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-about .about-pledges { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-about .about-pledge { grid-template-columns: minmax(0, 1fr); row-gap: 12px; }
  .page-about .about-pledge__no { grid-row: auto; padding-top: 0; }

  .page-about .about-timeline::before { left: 128px; }
  .page-about .about-node {
    display: grid;
    grid-template-columns: 96px minmax(0, 1fr);
    column-gap: 56px;
    padding-left: 0;
    padding-right: 0;
  }
  .page-about .about-node__dot { left: 116px; }
  .page-about .about-node__body { grid-column: 2; }
  .page-about .about-node__year { padding-top: 4px; text-align: right; grid-column: 1; }
  .page-about .about-node > .about-node__body { grid-column: 2; }
}

@media (min-width: 1200px) {
  .page-about .about-roles { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}