.page-about {
  --about-rule: rgba(46, 74, 60, 0.6);
  --about-rule-soft: rgba(46, 74, 60, 0.35);
  --about-text: rgba(238, 243, 240, 0.78);
  --about-text-dim: rgba(238, 243, 240, 0.6);
  position: relative;
  display: block;
}

.page-about .page-about__top {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  pointer-events: none;
}

.page-about .breadcrumbs {
  font-family: var(--font-data);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--about-text-dim);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.page-about .breadcrumbs a {
  color: var(--about-text-dim);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

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

.page-about .breadcrumbs__sep {
  color: var(--line);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: clamp(26px, 5vw, 52px) 0 clamp(40px, 6vw, 76px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(115% 85% at 84% 8%, rgba(31, 92, 58, 0.42), transparent 60%),
    radial-gradient(70% 60% at 6% 96%, rgba(60, 242, 198, 0.06), transparent 65%),
    linear-gradient(180deg, #07160f 0%, #07160f 72%, #0a1c13 100%);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  margin-top: clamp(22px, 3.5vw, 38px);
  align-items: start;
}

.page-about .about-hero .eyebrow {
  font-family: var(--font-editorial);
  font-size: clamp(0.82rem, 1.4vw, 0.95rem);
  letter-spacing: 0.14em;
  color: var(--orange);
  margin: 0;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.95rem, 6vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--chalk);
  margin: 14px 0 0;
}

.page-about .about-hero__intro {
  margin: 20px 0 0;
  max-width: 34em;
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.55vw, 1.12rem);
  line-height: 1.85;
  color: var(--about-text);
}

.page-about .about-hero__intro--sub {
  margin-top: 12px;
  font-size: clamp(0.92rem, 1.35vw, 1rem);
  color: var(--about-text-dim);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

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

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

.page-about .about-hero__figure .figure__media {
  border: 1px solid var(--about-rule);
  overflow: hidden;
}

.page-about .figure__caption {
  margin-top: 12px;
  font-family: var(--font-body);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--about-text-dim);
}

.page-about .about-hero__strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 20px;
  margin-top: clamp(34px, 5vw, 58px);
  padding-top: 22px;
  border-top: 1px solid var(--about-rule);
}

.page-about .about-hero__strip .data-strip__item {
  display: block;
}

.page-about .about-hero__strip .data-strip__num {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.7rem, 3.6vw, 2.5rem);
  line-height: 1;
  letter-spacing: -0.015em;
  color: var(--chalk);
}

.page-about .about-hero__strip .data-strip__num--accent {
  color: var(--orange);
}

.page-about .about-hero__strip .data-strip__label {
  display: block;
  margin-top: 9px;
  font-family: var(--font-body);
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--about-text-dim);
}

/* ---------- 通用章节 ---------- */

.page-about .about-section {
  padding: clamp(48px, 7.5vw, 100px) 0;
  border-top: 1px solid var(--about-rule-soft);
}

.page-about .about-section:first-of-type {
  border-top: none;
}

.page-about .chapter {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--about-rule);
}

.page-about .chapter__num {
  font-family: var(--font-data);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: var(--orange);
  padding-top: 0.45em;
}

.page-about .chapter .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.45rem, 3.4vw, 2.25rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--chalk);
}

.page-about .chapter .section-lead {
  margin: 14px 0 0;
  max-width: 46em;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--about-text);
}

/* ---------- 01 品牌故事 ---------- */

.page-about .story-grid {
  display: grid;
  gap: 34px;
  margin-top: clamp(28px, 4vw, 46px);
}

.page-about .story-lede {
  margin: 0 0 26px;
  padding-left: 18px;
  border-left: 2px solid var(--orange);
  font-family: var(--font-editorial);
  font-size: clamp(1.1rem, 2.2vw, 1.42rem);
  line-height: 1.78;
  color: var(--chalk);
}

.page-about .story-body p {
  margin: 0 0 18px;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.9;
  color: var(--about-text);
}

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

.page-about .story-notes {
  border-top: 1px solid var(--about-rule);
}

.page-about .story-note {
  border-bottom: 1px solid var(--about-rule);
}

.page-about .story-note summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 17px 38px 17px 0;
  font-family: var(--font-body);
  font-size: 0.96rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--chalk);
}

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

.page-about .story-note summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-data);
  font-size: 1.1rem;
  color: var(--orange);
  transition: color var(--dur) var(--ease);
}

.page-about .story-note[open] summary::after {
  content: "–";
  color: var(--cyan);
}

.page-about .story-note summary:hover,
.page-about .story-note summary:focus-visible {
  color: var(--cyan);
}

.page-about .story-note__body {
  padding: 0 0 20px;
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--about-text-dim);
}

/* ---------- 02 团队 ---------- */

.page-about .team-figure {
  margin: clamp(28px, 4vw, 44px) 0 0;
}

.page-about .team-figure .figure__media {
  border: 1px solid var(--about-rule);
  overflow: hidden;
}

.page-about .team-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(26px, 3.5vw, 38px);
}

.page-about .filter-btn {
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  padding: 9px 15px;
  border: 1px solid var(--about-rule);
  border-radius: 2px;
  background: rgba(18, 59, 39, 0.45);
  color: var(--about-text-dim);
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .filter-btn:hover,
.page-about .filter-btn:focus-visible {
  color: var(--chalk);
  border-color: var(--turf);
}

.page-about .filter-btn[aria-pressed="true"] {
  background: var(--orange);
  border-color: var(--orange);
  color: #06110c;
}

.page-about .team-grid {
  display: grid;
  gap: 1px;
  margin-top: 26px;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
}

.page-about .team-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--ink);
  transition: background var(--dur) var(--ease);
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  background: rgba(18, 59, 39, 0.6);
}

.page-about .team-card.is-filtered-in {
  animation: aboutFadeIn 0.34s var(--ease) both;
}

@keyframes aboutFadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-about .team-card__idx {
  font-family: var(--font-data);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .team-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.18rem;
  line-height: 1.3;
  letter-spacing: 0;
  color: var(--chalk);
}

.page-about .team-card__text {
  margin: 0;
  flex: 1 1 auto;
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.82;
  color: var(--about-text);
}

.page-about .team-card__meta {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--about-rule-soft);
  font-family: var(--font-data);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

/* ---------- 03 校对流程 ---------- */

.page-about .process-grid {
  display: grid;
  gap: 32px;
  margin-top: clamp(28px, 4vw, 46px);
  align-items: start;
}

.page-about .process-figure {
  margin: 0;
}

.page-about .process-figure .figure__media {
  border: 1px solid var(--about-rule);
  background: rgba(18, 59, 39, 0.35);
  overflow: hidden;
}

.page-about .process-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: process;
}

.page-about .process-step {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 22px 0;
  border-top: 1px solid var(--about-rule);
}

.page-about .process-step:last-child {
  border-bottom: 1px solid var(--about-rule);
}

.page-about .process-step__idx {
  font-family: var(--font-data);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .process-step__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.14rem;
  line-height: 1.3;
  color: var(--chalk);
}

.page-about .process-step__body p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--about-text);
}

/* ---------- 04 协作生态 ---------- */

.page-about .partner-grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(28px, 4vw, 46px);
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
}

.page-about .partner-card {
  padding: clamp(22px, 2.8vw, 32px);
  background: var(--ink);
  transition: background var(--dur) var(--ease);
}

.page-about .partner-card:hover {
  background: rgba(18, 59, 39, 0.6);
}

.page-about .partner-card__num {
  display: block;
  font-family: var(--font-data);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--board);
}

.page-about .partner-card__title {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.06rem;
  line-height: 1.35;
  color: var(--chalk);
}

.page-about .partner-card p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.82;
  color: var(--about-text-dim);
}

/* ---------- 05 版本时间线 ---------- */

.page-about .year-rail {
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
}

.page-about .year-rail__item {
  display: grid;
  gap: 6px;
  padding: 20px 0;
  border-top: 1px solid var(--about-rule);
  transition: background var(--dur) var(--ease);
}

.page-about .year-rail__item:last-child {
  border-bottom: 1px solid var(--about-rule);
}

.page-about .year-rail__year {
  font-family: var(--font-data);
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  color: var(--orange);
  transition: color var(--dur) var(--ease);
}

.page-about .year-rail__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.12rem;
  line-height: 1.35;
  color: var(--chalk);
}

.page-about .year-rail__text {
  margin: 0 0 12px;
  font-family: var(--font-body);
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--about-text);
}

.page-about .year-rail__tag {
  display: inline-block;
  padding: 5px 11px;
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--paper);
  background: rgba(232, 223, 200, 0.09);
  border: 1px solid rgba(232, 223, 200, 0.22);
  border-radius: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

/* ---------- 06 收束 ---------- */

.page-about .about-section--join {
  border-top: 1px solid var(--about-rule);
  background: linear-gradient(180deg, rgba(18, 59, 39, 0.4) 0%, rgba(7, 22, 15, 0) 100%);
}

.page-about .join-band {
  display: grid;
  gap: 30px;
  padding: clamp(28px, 4vw, 44px) 0 0;
}

.page-about .join-band .eyebrow {
  font-family: var(--font-data);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
  margin: 0;
}

.page-about .join-band h2 {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.6vw, 2.3rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--chalk);
}

.page-about .join-band__lead p {
  margin: 0;
  max-width: 42em;
  font-family: var(--font-body);
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--about-text);
}

.page-about .join-band__links {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
}

.page-about .join-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  background: var(--ink);
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about .join-link__idx {
  font-family: var(--font-data);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-about .join-link__label {
  font-family: var(--font-body);
  font-size: 0.96rem;
  font-weight: 500;
  color: var(--chalk);
}

.page-about .join-link:hover,
.page-about .join-link:focus-visible {
  background: rgba(31, 92, 58, 0.55);
}

.page-about .join-link:hover .join-link__label,
.page-about .join-link:focus-visible .join-link__label {
  color: var(--cyan);
}

.page-about .back-top {
  margin: 32px 0 0;
  text-align: right;
}

.page-about .back-top a {
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--about-text-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .back-top a:hover,
.page-about .back-top a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-about .join-band__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

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

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

  .page-about .process-step {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }

  .page-about .process-step__idx {
    padding-top: 0.35em;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: clamp(32px, 4.5vw, 68px);
  }

  .page-about .chapter {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 30px;
    padding-bottom: 34px;
  }

  .page-about .story-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(34px, 5vw, 76px);
  }

  .page-about .process-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(34px, 5vw, 76px);
  }

  .page-about .year-rail__item {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 38px;
    align-items: baseline;
    padding: 26px 0;
  }

  .page-about .year-rail__year {
    font-size: 1.42rem;
  }

  .page-about .year-rail__item:hover {
    background: rgba(18, 59, 39, 0.42);
  }

  .page-about .year-rail__item:hover .year-rail__year {
    color: var(--cyan);
  }

  .page-about .year-rail__item:hover .year-rail__tag {
    color: var(--cyan);
    border-color: rgba(60, 242, 198, 0.45);
  }

  .page-about .join-band {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: clamp(34px, 5vw, 72px);
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-about .team-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .partner-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}
</PAGE_CSS>>>