.page-about {
  --ab-line: rgba(33, 243, 255, 0.18);
  --ab-line-soft: rgba(143, 163, 184, 0.14);
  --ab-panel: #0e1524;
  --ab-cut: 14px;
  overflow-x: clip;
  background: var(--ink-void);
  color: var(--ice);
  font-family: var(--font-body);
}

.page-about [id] {
  scroll-margin-top: 6.5rem;
}

.page-about .index {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-about h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.65rem, 4.8vw, 3.1rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0.7rem 0 0;
  color: var(--ice);
}

.page-about h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.4;
  margin: 0 0 0.5rem;
  color: var(--ice);
}

/* ---------- 顶部上下文条 ---------- */
.page-about .about-topbar {
  border-bottom: 1px solid var(--ab-line-soft);
  background: linear-gradient(180deg, rgba(18, 24, 38, 0.92), rgba(7, 11, 18, 0.55));
}

.page-about .about-topbar__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem 1.5rem;
  padding: 0.85rem 0;
}

.page-about .about-toc__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-toc__link {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--steel);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  color: var(--neon-cyan);
  border-bottom-color: var(--neon-cyan);
}

/* ---------- 刊头 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(2.5rem, 7vw, 5rem) 0 clamp(3rem, 8vw, 5.5rem);
  background:
    radial-gradient(58% 78% at 80% 10%, rgba(139, 92, 255, 0.24), transparent 62%),
    radial-gradient(52% 62% at 4% 92%, rgba(255, 46, 154, 0.16), transparent 66%),
    var(--ink-void);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -18%;
  right: -12%;
  width: 44vw;
  height: 44vw;
  min-width: 240px;
  min-height: 240px;
  background: linear-gradient(140deg, rgba(33, 243, 255, 0.12), transparent 62%);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
  transform: rotate(7deg);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-about .about-hero__kicker {
  margin: 0;
  color: var(--neon-cyan);
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.05rem, 9.4vw, 5.8rem);
  line-height: 0.94;
  letter-spacing: -0.035em;
  margin: 0.55rem 0 0;
  color: var(--ice);
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--neon-magenta);
  text-shadow: 0 0 28px rgba(255, 46, 154, 0.5);
}

.page-about .about-hero__lede {
  max-width: 46ch;
  margin: 1.35rem 0 0;
  color: rgba(234, 246, 255, 0.78);
  font-size: clamp(0.95rem, 2.2vw, 1.06rem);
  line-height: 1.85;
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8.5rem, 1fr));
  gap: 1rem 1.25rem;
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
}

.page-about .about-hero__fact {
  border-left: 2px solid var(--neon-cyan);
  padding-left: 0.75rem;
}

.page-about .about-hero__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 4vw, 1.95rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--neon-cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__value small {
  font-size: 0.55em;
  font-weight: 400;
  margin-left: 0.25em;
  color: var(--steel);
}

.page-about .about-hero__label {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--steel);
}

.page-about .about-hero__visual {
  position: relative;
  margin: 0;
  border: 1px solid var(--ab-line);
  background: var(--ink-carbon);
  box-shadow: 0 0 46px rgba(33, 243, 255, 0.1);
}

.page-about .about-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(1.1) contrast(1.05);
}

.page-about .about-hero__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 0.45rem 0.8rem;
  background: rgba(7, 11, 18, 0.82);
  border-top: 1px solid var(--ab-line);
  border-right: 1px solid var(--ab-line);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  color: var(--neon-cyan);
}

/* ---------- 使命 ---------- */
.page-about .about-mission {
  padding: clamp(3rem, 8vw, 6rem) 0;
  background: linear-gradient(180deg, var(--ink-carbon), #0b111d 70%, var(--ink-carbon));
  border-top: 1px solid var(--ab-line-soft);
  border-bottom: 1px solid var(--ab-line-soft);
}

.page-about .about-mission__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3.5rem);
}

.page-about .about-mission__body p {
  margin: 0 0 1.1rem;
  max-width: 62ch;
  color: rgba(234, 246, 255, 0.8);
  font-size: 0.98rem;
  line-height: 1.85;
}

.page-about .about-mission__list {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.page-about .about-mission__list li {
  position: relative;
  padding-left: 1.4rem;
  font-size: 0.92rem;
  line-height: 1.8;
  color: rgba(234, 246, 255, 0.78);
}

.page-about .about-mission__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 0.7rem;
  height: 2px;
  background: var(--neon-magenta);
}

.page-about .about-mission__list strong {
  display: inline-block;
  margin-right: 0.5rem;
  color: var(--ice);
  font-weight: 700;
}

/* ---------- 分区标题组 ---------- */
.page-about .about-sec-head {
  margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .about-sec-head__lede {
  margin: 1rem 0 0;
  max-width: 56ch;
  color: var(--steel);
  font-size: 0.92rem;
  line-height: 1.8;
}

/* ---------- 生产工序 ---------- */
.page-about .about-produce {
  padding: clamp(3rem, 8vw, 6rem) 0;
  background: var(--ink-void);
}

.page-about .proc {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--ab-line-soft);
  border: 1px solid var(--ab-line-soft);
}

.page-about .proc__item {
  background: var(--ink-void);
  padding: 1.5rem 1.25rem 1.6rem;
  transition: background var(--dur) var(--ease-out);
}

.page-about .proc__item:hover {
  background: var(--ab-panel);
}

.page-about .proc__no {
  display: block;
  color: var(--volt-purple);
  margin-bottom: 0.75rem;
}

.page-about .proc__title {
  color: var(--neon-cyan);
}

.page-about .proc__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--steel);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  padding: clamp(3rem, 8vw, 6rem) 0;
  background:
    radial-gradient(70% 40% at 15% 0%, rgba(139, 92, 255, 0.18), transparent 60%),
    var(--ink-carbon);
  border-top: 1px solid var(--ab-line-soft);
}

.page-about .about-timeline__head {
  display: grid;
  gap: 1.5rem;
  align-items: end;
}

.page-about .about-timeline__art {
  margin: 0;
  position: relative;
  border: 1px solid var(--ab-line);
  background: var(--ink-void);
}

.page-about .about-timeline__art img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  opacity: 0.85;
}

.page-about .about-timeline__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  padding: 0.45rem 0.75rem;
  background: rgba(7, 11, 18, 0.84);
  border-top: 1px solid var(--ab-line);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.06em;
  color: var(--steel);
}

.page-about .about-timeline__filter,
.page-about .about-team__filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--ab-line-soft);
}

.page-about .about-timeline__status,
.page-about .about-team__status {
  width: 100%;
  margin: 0.35rem 0 0;
  color: var(--volt-lime);
  font-size: 0.66rem;
}

.page-about .tl {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
}

.page-about .tl__item {
  display: grid;
  grid-template-columns: 3.2rem minmax(0, 1fr);
  gap: 0.35rem 0.9rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--ab-line-soft);
}

.page-about .tl__year {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.35rem, 3.6vw, 3rem);
  line-height: 1;
  letter-spacing: -0.05em;
  color: rgba(33, 243, 255, 0.42);
  -webkit-text-stroke: 1px rgba(33, 243, 255, 0.75);
  overflow-wrap: anywhere;
}

.page-about .tl__body {
  border-left: 1px solid var(--ab-line);
  padding-left: 1rem;
  min-width: 0;
}

.page-about .tl__meta {
  margin: 0 0 0.45rem;
  color: var(--volt-purple);
  font-size: 0.66rem;
}

.page-about .tl__body p:last-child {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--steel);
}

/* ---------- 团队与协作 ---------- */
.page-about .about-team {
  padding: clamp(3rem, 8vw, 6rem) 0;
  background: var(--ink-void);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  align-items: center;
}

.page-about .about-team__intro p {
  margin: 1rem 0 0;
  max-width: 58ch;
  font-size: 0.95rem;
  line-height: 1.85;
  color: rgba(234, 246, 255, 0.78);
}

.page-about .about-team__figure {
  margin: 0;
  border: 1px solid var(--ab-line);
  background: var(--ink-carbon);
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
}

.page-about .about-team__cap {
  display: block;
  padding: 0.6rem 0.85rem;
  border-top: 1px solid var(--ab-line);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.05em;
  color: var(--steel);
}

.page-about .about-team__eco {
  margin-top: clamp(2rem, 5vw, 3rem);
}

.page-about .eco {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--ab-line-soft);
}

.page-about .eco__item {
  background: var(--ink-void);
  padding: 1.35rem 1.1rem 1.5rem;
  border-left: 2px solid transparent;
  transition: border-color var(--dur) var(--ease-out), background var(--dur) var(--ease-out);
}

.page-about .eco__item:hover {
  border-left-color: var(--neon-magenta);
  background: var(--ab-panel);
}

.page-about .eco__num {
  display: block;
  color: var(--volt-lime);
  margin-bottom: 0.6rem;
}

.page-about .eco__title {
  color: var(--ice);
}

.page-about .eco__text {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.78;
  color: var(--steel);
}

/* ---------- 荣誉 ---------- */
.page-about .about-honor {
  padding: clamp(3rem, 8vw, 6rem) 0;
  background: linear-gradient(180deg, #180c22, var(--ink-void) 78%);
  border-top: 1px solid rgba(255, 46, 154, 0.22);
}

.page-about .about-honor h2 {
  color: #ffe6f4;
}

.page-about .honor {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(255, 46, 154, 0.2);
}

.page-about .honor__item {
  background: var(--ink-void);
  padding: 1.5rem 1.15rem;
}

.page-about .honor__year {
  display: block;
  color: var(--neon-magenta);
  margin-bottom: 0.65rem;
  letter-spacing: 0.12em;
}

.page-about .honor__title {
  font-size: 1.02rem;
  color: var(--ice);
}

.page-about .honor__note {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--steel);
}

/* ---------- 为什么选择 ---------- */
.page-about .about-why {
  padding: clamp(3rem, 8vw, 6rem) 0;
  background: var(--ink-carbon);
}

.page-about .why {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

.page-about .why__item {
  position: relative;
  padding: 1.35rem 1.1rem 1.4rem;
  border: 1px solid var(--ab-line-soft);
  border-left: 3px solid var(--neon-cyan);
  background: linear-gradient(135deg, rgba(33, 243, 255, 0.06), transparent 62%);
}

.page-about .why__no {
  color: var(--neon-cyan);
}

.page-about .why__title {
  margin-top: 0.5rem;
}

.page-about .why__text {
  margin: 0 0 0.9rem;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--steel);
}

.page-about .why__link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--neon-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(33, 243, 255, 0.4);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out);
}

.page-about .why__link:hover,
.page-about .why__link:focus-visible {
  color: var(--neon-magenta);
  border-bottom-color: var(--neon-magenta);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  padding: clamp(2.5rem, 6vw, 4rem) 0;
  background:
    linear-gradient(115deg, rgba(255, 46, 154, 0.18), transparent 55%),
    var(--ink-slate);
  border-top: 1px solid rgba(255, 46, 154, 0.28);
}

.page-about .about-cta__inner {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
  align-items: flex-start;
}

.page-about .about-cta__copy h2 {
  margin: 0;
  font-size: clamp(1.4rem, 4vw, 2.2rem);
}

.page-about .about-cta__copy p {
  margin: 0.85rem 0 0;
  max-width: 52ch;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--steel);
}

.page-about .about-cta__btn {
  white-space: nowrap;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .proc {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

  .page-about .tl__item {
    grid-template-columns: 5rem minmax(0, 1fr);
    gap: 0.5rem 1.25rem;
    padding: 1.85rem 0;
  }

  .page-about .about-cta__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.14fr 0.86fr;
    align-items: end;
  }

  .page-about .about-mission__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: start;
  }

  .page-about .about-mission__head {
    position: sticky;
    top: 6.5rem;
  }

  .page-about .about-timeline__head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 20rem);
    gap: 2.5rem;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  }

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

  .page-about .tl__item {
    grid-template-columns: 8.5rem minmax(0, 1fr);
    gap: 1rem 2rem;
    padding: 2.2rem 0;
  }

  .page-about .tl__body {
    padding-left: 1.75rem;
  }

  .page-about .about-toc__list {
    gap: 0.4rem 1.6rem;
  }
}

@media (min-width: 1200px) {
  .page-about .about-hero__title {
    letter-spacing: -0.045em;
  }

  .page-about .proc__item {
    padding: 2rem 1.75rem 2.1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: 0.01ms !important;
  }
}