.page-about {
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .about-section {
  padding: 64px 0;
}

.page-about .section-head {
  margin-bottom: 36px;
}

.page-about .section-head h2,
.page-about .about-cta h2 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.22;
  margin: 10px 0 0;
}

.page-about .section-head h2 {
  font-size: clamp(26px, 4vw, 38px);
  color: var(--paper-hi);
}

.page-about .section-head .lede {
  margin: 14px 0 0;
  max-width: 62ch;
  color: rgba(244, 241, 234, 0.74);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: 26px 0 58px;
  background:
    radial-gradient(120% 82% at 88% -8%, rgba(200, 164, 92, 0.17), transparent 58%),
    linear-gradient(172deg, var(--ink-950) 0%, var(--ink-800) 60%, var(--ink-900) 100%);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 28px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-about .about-hero-grid {
  display: grid;
  gap: 32px;
  align-items: start;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 5.4vw, 58px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.022em;
  margin: 14px 0 0;
  color: var(--paper-hi);
}

.page-about .about-hero .lede {
  margin: 20px 0 0;
  max-width: 54ch;
  font-size: 17px;
  line-height: 1.85;
  color: rgba(244, 241, 234, 0.82);
}

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

.page-about .about-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.page-about .about-jump a {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
  text-decoration: none;
  padding: 7px 14px;
  border-radius: var(--pill);
  border: 1px solid var(--line-soft);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-jump a:hover,
.page-about .about-jump a:focus-visible {
  color: var(--gold-soft);
  border-color: rgba(200, 164, 92, 0.45);
}

.page-about .about-hero-media {
  border-radius: var(--radius-xl);
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--ink-950);
  box-shadow: 0 34px 76px -48px rgba(0, 0, 0, 0.95);
}

.page-about .about-hero-media img,
.page-about .about-history-media img,
.page-about .about-cat-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-about .about-stats {
  margin-top: 46px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-about .about-stat {
  background: linear-gradient(180deg, var(--ink-900), var(--ink-950));
  padding: 22px 20px;
}

.page-about .about-stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--gold-soft);
}

.page-about .about-stat-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* ---------- 品牌源起 ---------- */

.page-about .about-origin {
  background: var(--paper);
  color: var(--char);
}

.page-about .about-origin-grid {
  display: grid;
  gap: 26px;
  align-items: start;
}

.page-about .about-origin .eyebrow {
  color: var(--red);
}

.page-about .about-origin h2 {
  font-family: var(--font-display);
  font-size: clamp(25px, 4vw, 36px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.015em;
  margin: 10px 0 0;
  color: var(--char);
}

.page-about .about-origin p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-700);
}

.page-about .about-origin .lede {
  font-size: 17.5px;
  line-height: 1.8;
  color: var(--char);
}

.page-about .about-points {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-about .about-points li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0 4px;
  border-top: 1px solid rgba(20, 24, 28, 0.14);
}

.page-about .about-points .num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--red);
  padding-top: 4px;
}

.page-about .about-points h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 6px;
  color: var(--char);
}

.page-about .about-points p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-600);
}

/* ---------- 发展历程 ---------- */

.page-about .about-history {
  background:
    radial-gradient(88% 62% at 8% 0%, rgba(47, 111, 98, 0.18), transparent 62%),
    linear-gradient(180deg, var(--ink-800), var(--ink-900));
  border-bottom: 1px solid var(--line);
}

.page-about .about-history-grid {
  display: grid;
  gap: 40px;
  align-items: start;
}

.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 6px 0 0;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 14px;
  bottom: 20px;
  width: 1px;
  background: linear-gradient(180deg, rgba(200, 164, 92, 0.8), rgba(200, 164, 92, 0.06));
}

.page-about .about-timeline-item {
  position: relative;
  padding: 0 0 34px 32px;
}

.page-about .about-timeline-item:last-child {
  padding-bottom: 4px;
}

.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  border: 1px solid var(--gold);
  background: var(--ink-800);
  box-shadow: 0 0 0 4px rgba(200, 164, 92, 0.1);
}

.page-about .about-timeline-year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .about-timeline-item h3 {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 23px);
  font-weight: 700;
  letter-spacing: -0.012em;
  line-height: 1.35;
  margin: 8px 0 10px;
  color: var(--paper-hi);
}

.page-about .about-timeline-item p {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(244, 241, 234, 0.74);
}

.page-about .about-history-aside {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(5, 13, 22, 0.62);
  overflow: hidden;
}

.page-about .about-history-media {
  border-radius: 0;
  overflow: hidden;
}

.page-about .about-history-note {
  margin: 0;
  padding: 18px 20px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
  border-top: 1px solid var(--line);
}

/* ---------- 内容体系 ---------- */

.page-about .about-categories {
  background: var(--paper-hi);
  color: var(--char);
}

.page-about .about-categories-top {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-about .about-cat-media {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(11, 27, 43, 0.12);
  background: var(--ink-900);
  overflow: hidden;
}

.page-about .about-categories .eyebrow {
  color: var(--red);
}

.page-about .about-categories h2 {
  font-family: var(--font-display);
  font-size: clamp(25px, 4vw, 36px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.015em;
  margin: 10px 0 0;
  color: var(--char);
}

.page-about .about-categories p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-700);
}

.page-about .about-categories .lede {
  margin-top: 16px;
  font-size: 17.5px;
  line-height: 1.8;
  color: var(--char);
}

.page-about .about-categories .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 40px 0 24px;
}

.page-about .about-categories .filter-btn {
  font-family: var(--font-body);
  font-size: 14px;
  letter-spacing: 0.03em;
  padding: 9px 18px;
  border-radius: var(--pill);
  border: 1px solid rgba(11, 27, 43, 0.2);
  background: transparent;
  color: var(--ink-600);
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-categories .filter-btn:hover {
  border-color: var(--red);
  color: var(--red);
}

.page-about .about-categories .filter-btn.is-active {
  background: var(--ink-800);
  border-color: var(--ink-800);
  color: var(--gold-soft);
}

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

.page-about .about-cat {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 22px 22px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(200, 164, 92, 0.26);
  background: linear-gradient(165deg, var(--ink-800), var(--ink-950));
  color: var(--paper);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-cat:hover {
  transform: translateY(-4px);
  border-color: rgba(200, 164, 92, 0.55);
}

.page-about .about-cat-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .about-cat h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.012em;
  margin: 0;
  color: var(--paper-hi);
}

.page-about .about-cat h3 a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about .about-cat h3 a:hover,
.page-about .about-cat h3 a:focus-visible {
  color: var(--gold-soft);
  border-color: var(--gold);
}

.page-about .about-cat p {
  margin: 0;
  flex: 1;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(244, 241, 234, 0.74);
}

/* ---------- 团队与运营 ---------- */

.page-about .about-team {
  background: var(--ink-900);
}

.page-about .about-team-grid {
  display: grid;
  gap: 34px;
  align-items: start;
}

.page-about .about-team-intro h2 {
  font-family: var(--font-display);
  font-size: clamp(25px, 4vw, 36px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.015em;
  margin: 10px 0 18px;
  color: var(--paper-hi);
}

.page-about .about-team-intro p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(244, 241, 234, 0.76);
}

.page-about .about-rhythm {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-rhythm li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 18px 2px;
  border-bottom: 1px solid var(--line-soft);
  transition: background var(--dur) var(--ease);
}

.page-about .about-rhythm li:hover {
  background: rgba(200, 164, 92, 0.05);
}

.page-about .about-rhythm-term {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .about-rhythm-desc {
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 241, 234, 0.78);
}

/* ---------- 服务与合作 ---------- */

.page-about .about-partner {
  background: linear-gradient(160deg, var(--ink-950), var(--ink-800) 68%, var(--ink-900));
  border-top: 1px solid var(--line);
}

.page-about .about-partner-grid {
  display: grid;
  gap: 34px;
  align-items: center;
}

.page-about .about-partner-intro h2 {
  font-family: var(--font-display);
  font-size: clamp(25px, 4vw, 36px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.015em;
  margin: 10px 0 18px;
  color: var(--paper-hi);
}

.page-about .about-partner-intro p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(244, 241, 234, 0.76);
}

.page-about .about-partner-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-partner-stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .about-partner-stat {
  padding: 22px 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: rgba(5, 13, 22, 0.58);
}

.page-about .about-partner-stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.2vw, 30px);
  font-weight: 800;
  letter-spacing: -0.012em;
  color: var(--gold-soft);
}

.page-about .about-partner-stat span {
  display: block;
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 收尾 ---------- */

.page-about .about-cta {
  background: var(--ink-950);
  border-top: 1px solid var(--line);
}

.page-about .about-cta-inner {
  display: grid;
  gap: 24px;
  align-items: center;
}

.page-about .about-cta h2 {
  font-size: clamp(24px, 3.6vw, 34px);
  color: var(--paper-hi);
}

.page-about .about-cta p {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 241, 234, 0.76);
}

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

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .about-rhythm li {
    grid-template-columns: 90px minmax(0, 1fr);
    gap: 18px;
    padding: 18px 6px;
  }

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

@media (min-width: 720px) {
  .page-about .about-cat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about .about-cta-inner {
    grid-template-columns: minmax(0, 1.35fr) auto;
    gap: 48px;
  }
}

@media (min-width: 900px) {
  .page-about .about-section {
    padding: 96px 0;
  }

  .page-about .about-origin-grid {
    grid-template-columns: minmax(0, 0.62fr) minmax(0, 1.38fr);
    gap: 64px;
  }

  .page-about .about-origin-aside {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
}

@media (min-width: 920px) {
  .page-about .about-hero {
    padding: 34px 0 76px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 56px;
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-about .about-categories-top {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: 56px;
  }

  .page-about .about-partner-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.95fr);
    gap: 60px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-history-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.75fr);
    gap: 60px;
  }

  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: 64px;
  }
}

@media (min-width: 1120px) {
  .page-about .about-cat-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-cat,
  .page-about .about-jump a,
  .page-about .about-cat h3 a {
    transition: none;
  }

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