.page-about {
  --about-line-soft: rgba(246, 247, 252, 0.12);
  --about-team-hover: #16305A;
  background: var(--color-bg);
  color: var(--color-text);
}

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

.page-about [id] {
  scroll-margin-top: 5rem;
}

/* ========== Hero / 品牌档案 ========== */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2rem, 6vw, 4.5rem) 0 clamp(2.5rem, 6vw, 5.5rem);
}

.page-about .about-hero__bgwrap {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.page-about .about-hero__bgwrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 30, 58, 0.72) 0%, rgba(11, 30, 58, 0.9) 100%);
}

.page-about .about-hero__bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.42;
}

.page-about .about-hero__layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem 3rem;
}

.page-about .about-hero__folio {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--font-display);
  color: var(--color-neon);
  border-bottom: 4px solid var(--color-neon);
  padding-bottom: 0.6rem;
  margin-bottom: 0.5rem;
}

.page-about .about-hero__folio-num {
  font-size: clamp(3rem, 15vw, 6rem);
  font-weight: 900;
  line-height: 0.9;
}

.page-about .about-hero__folio-word {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  line-height: 1.5;
  text-align: right;
  color: var(--color-text-dim);
}

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

.page-about .about-hero .breadcrumb {
  margin-bottom: 1.25rem;
  font-size: 0.85rem;
  color: var(--color-text-disabled);
}

.page-about .about-hero .breadcrumb a {
  color: var(--color-neon);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.page-about .about-hero .breadcrumb a:hover,
.page-about .about-hero .breadcrumb a:focus-visible {
  border-bottom-color: var(--color-neon);
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 6.5vw, 3.6rem);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: 0.01em;
  margin: 0.5rem 0 1.25rem;
  max-width: 18em;
  text-wrap: balance;
}

.page-about .about-hero__lede {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--color-text-dim);
  max-width: 62ch;
  margin: 0;
}

.page-about .about-hero__panel {
  margin-top: 1.5rem;
  background: rgba(10, 20, 40, 0.82);
  border-left: 6px solid var(--color-hot);
  padding: 1.15rem 1.35rem;
  max-width: 620px;
}

.page-about .about-hero__panel h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--color-hot);
  text-transform: uppercase;
}

.page-about .about-hero__panel p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--color-text-dim);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

@media (min-width: 900px) {
  .page-about .about-hero__layout {
    grid-template-columns: 220px minmax(0, 760px);
    align-items: start;
  }

  .page-about .about-hero__folio {
    flex-direction: column;
    align-items: flex-start;
    justify-content: space-between;
    min-height: 300px;
    border-bottom: 0;
    border-left: 4px solid var(--color-neon);
    padding-bottom: 0;
    padding-left: 1rem;
    margin-bottom: 0;
  }

  .page-about .about-hero__folio-num {
    font-size: 7.5rem;
  }

  .page-about .about-hero__folio-word {
    text-align: left;
  }
}

/* ========== 目录 ========== */
.page-about .about-toc {
  background: var(--color-surface);
  border-top: 4px solid var(--color-accent);
  border-bottom: 4px solid var(--color-accent);
}

.page-about .about-toc__kicker {
  margin: 0;
  padding: 1rem 0 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-disabled);
}

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

.page-about .about-toc__list a {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem 0;
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-toc__list a span {
  color: var(--color-neon);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  min-width: 1.7rem;
}

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

@media (min-width: 900px) {
  .page-about .about-toc__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0 3rem;
  }

  .page-about .about-toc__list li {
    border-left: 1px solid rgba(57, 255, 20, 0.22);
    padding-left: 1.25rem;
  }
}

/* ========== 发展历程 ========== */
.page-about .about-journey {
  position: relative;
  background: var(--color-bg-alt);
  padding: var(--space-section) 0;
}

.page-about .about-journey::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(57, 255, 20, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122, 11, 192, 0.12) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.page-about .about-journey .container {
  position: relative;
  z-index: 1;
}

.page-about .about-journey__intro {
  position: relative;
  margin-bottom: 2.5rem;
}

.page-about .about-journey__quotemark {
  position: absolute;
  top: -2rem;
  right: 0;
  z-index: 0;
  font-family: var(--font-display);
  font-size: 7rem;
  line-height: 1;
  color: rgba(122, 11, 192, 0.3);
  user-select: none;
}

.page-about .about-journey__intro .eyebrow,
.page-about .about-journey__intro h2,
.page-about .about-journey__lede {
  position: relative;
  z-index: 1;
}

.page-about .about-journey__intro h2 {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 6.5vw, 4.25rem);
  line-height: 1.05;
  margin: 0.25rem 0 0.85rem;
}

.page-about .about-journey__lede {
  color: var(--color-text-dim);
  font-size: 1rem;
  line-height: 1.75;
  max-width: 56ch;
  margin: 0;
}

.page-about .about-journey__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}

.page-about .about-journey__timeline {
  position: relative;
  padding-top: 0.25rem;
}

.page-about .about-journey__line {
  position: absolute;
  left: 23px;
  top: 0;
  width: 2px;
  height: 100%;
  z-index: 0;
}

.page-about .about-journey__line line {
  stroke: var(--color-neon);
  stroke-width: 2;
  stroke-dasharray: 6 4;
}

.page-about .about-journey__list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  z-index: 1;
}

.page-about .about-journey__item {
  position: relative;
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 0 1.25rem;
  padding: 0 0 2.25rem;
}

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

.page-about .about-journey__item::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 6px;
  width: 14px;
  height: 14px;
  border: 2px solid var(--color-neon);
  border-radius: 50%;
  background: var(--color-bg-alt);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.page-about .about-journey__item:hover::before,
.page-about .about-journey__item:focus-within::before {
  background: var(--color-neon);
  box-shadow: 0 0 0 6px rgba(57, 255, 20, 0.2);
}

.page-about .about-journey__stage {
  position: relative;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  font-weight: 900;
  line-height: 1;
  color: var(--color-text);
  text-shadow: 2px 2px 0 var(--color-accent);
  letter-spacing: 0.02em;
}

.page-about .about-journey__stage::after {
  content: attr(data-stage-note);
  position: absolute;
  left: 0;
  bottom: 110%;
  width: 190px;
  background: var(--color-bg);
  border: 1px solid var(--color-neon);
  padding: 0.55rem 0.7rem;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 0;
  text-shadow: none;
  color: var(--color-text);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.18s ease, transform 0.18s ease;
  pointer-events: none;
  z-index: 12;
}

.page-about .about-journey__stage:hover::after,
.page-about .about-journey__item:focus-within .about-journey__stage::after {
  opacity: 1;
  transform: translateY(0);
}

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

.page-about .about-journey__body h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  margin: 0 0 0.5rem;
}

.page-about .about-journey__body > p {
  margin: 0 0 0.5rem;
  color: var(--color-text-dim);
  line-height: 1.7;
  font-size: 0.98rem;
  max-width: 62ch;
}

.page-about .about-journey__note {
  border-left: 2px solid rgba(122, 11, 192, 0.7);
  padding-left: 0.75rem;
  margin-top: 0.5rem;
}

.page-about .about-journey__note summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--color-neon);
}

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

.page-about .about-journey__note summary::before {
  content: "＋";
  margin-right: 0.5rem;
  color: var(--color-accent);
}

.page-about .about-journey__note[open] summary::before {
  content: "－";
}

.page-about .about-journey__note p {
  margin-top: 0.6rem;
  margin-bottom: 0;
  font-size: 0.9rem;
  color: var(--color-text-dim);
  line-height: 1.7;
}

.page-about .about-journey__figure {
  margin: 0;
  padding: 1rem;
  background: var(--color-surface);
  border: 1px solid rgba(57, 255, 20, 0.42);
  box-shadow: var(--shadow-card);
}

.page-about .about-journey__figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .about-journey__figure figcaption {
  margin-top: 0.8rem;
  font-size: 0.82rem;
  color: var(--color-text-dim);
  line-height: 1.6;
}

@media (min-width: 768px) {
  .page-about .about-journey__item {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 0 2rem;
  }

  .page-about .about-journey__stage {
    font-size: 3.2rem;
  }
}

@media (min-width: 900px) {
  .page-about .about-journey__layout {
    grid-template-columns: minmax(0, 1.5fr) minmax(240px, 0.7fr);
    gap: 3rem;
  }

  .page-about .about-journey__side {
    position: sticky;
    top: 2rem;
  }
}

/* ========== 服务能力 ========== */
.page-about .about-capacity {
  position: relative;
  overflow: hidden;
  padding: var(--space-section) 0;
}

.page-about .about-capacity::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(rgba(57, 255, 20, 0.06) 1px, transparent 1px);
  background-size: 100% 32px;
  opacity: 0.45;
  pointer-events: none;
}

.page-about .about-capacity .container {
  position: relative;
  z-index: 1;
}

.page-about .about-capacity__heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.page-about .about-capacity__numeral {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 900;
  line-height: 0.9;
  color: rgba(122, 11, 192, 0.55);
  text-shadow: 2px 2px 0 rgba(57, 255, 20, 0.22);
}

.page-about .about-capacity__heading h2 {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 6.5vw, 4.25rem);
  line-height: 1.05;
  margin: 0.25rem 0 0.6rem;
}

.page-about .about-capacity__lede {
  color: var(--color-text-dim);
  line-height: 1.75;
  max-width: 56ch;
  margin: 0;
}

.page-about .about-capacity__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(122, 11, 192, 0.4);
  border: 2px solid var(--color-accent);
  margin-bottom: 2rem;
}

.page-about .about-capacity__stat {
  background: var(--color-surface);
  padding: 1.4rem 1.25rem;
}

.page-about .about-capacity__figure {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  margin: 0 0 0.75rem;
}

.page-about .about-capacity__num {
  font-family: var(--font-mono);
  font-size: clamp(2.4rem, 7vw, 4rem);
  font-weight: 800;
  line-height: 1;
  color: var(--color-neon);
  text-decoration: underline;
  text-decoration-thickness: 3px;
  text-decoration-color: var(--color-neon);
  text-underline-offset: 6px;
}

.page-about .about-capacity__unit {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--color-text-dim);
}

.page-about .about-capacity__stat h3 {
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin: 0 0 0.4rem;
}

.page-about .about-capacity__stat > p:last-child {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--color-text-dim);
}

.page-about .about-capacity__feature {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  align-items: stretch;
  margin-top: 2.5rem;
}

.page-about .about-capacity__feature img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 1px solid rgba(57, 255, 20, 0.4);
  box-shadow: var(--shadow-card);
}

.page-about .about-capacity__promise {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  background: var(--color-bg-alt);
  border: 2px solid var(--color-neon);
  padding: 1.6rem;
  overflow: hidden;
}

.page-about .about-capacity__promise::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--color-hot) 50%, transparent 50%);
  opacity: 0.92;
}

.page-about .about-capacity__promise h3 {
  font-size: 1.2rem;
  line-height: 1.4;
  margin: 0.9rem 0 0.5rem;
  padding-right: 2rem;
}

.page-about .about-capacity__promise p {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--color-text-dim);
  margin: 0 0 1rem;
}

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

@media (min-width: 900px) {
  .page-about .about-capacity__heading {
    grid-template-columns: 180px minmax(0, 1fr);
    align-items: end;
    gap: 1rem 2rem;
    margin-bottom: 2.5rem;
  }

  .page-about .about-capacity__feature {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.9fr);
    gap: 2rem;
  }
}

@media (min-width: 1000px) {
  .page-about .about-capacity__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ========== 内容目录 ========== */
.page-about .about-directory {
  position: relative;
  overflow: hidden;
  background: var(--color-bg-alt);
  padding: var(--space-section) 0;
}

.page-about .about-directory::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(135deg, transparent 0 22px, rgba(122, 11, 192, 0.13) 22px 24px);
  pointer-events: none;
}

.page-about .about-directory .container {
  position: relative;
  z-index: 1;
}

.page-about .about-directory__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.page-about .about-directory__card {
  position: relative;
  background: var(--color-surface);
  border-top: 6px solid var(--color-accent);
  border-left: 1px solid rgba(57, 255, 20, 0.4);
  padding: 1.8rem 1.5rem 1.6rem;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-about .about-directory__card:nth-child(2) {
  border-top-color: var(--color-neon);
}

.page-about .about-directory__card:nth-child(3) {
  border-top-color: var(--color-hot);
}

.page-about .about-directory__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 44px rgba(0, 0, 0, 0.35);
}

.page-about .about-directory__code {
  position: absolute;
  right: 1rem;
  top: 0.8rem;
  font-family: var(--font-display);
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1;
  color: rgba(246, 247, 252, 0.1);
  pointer-events: none;
}

.page-about .about-directory__card h3 {
  font-size: 1.12rem;
  line-height: 1.45;
  margin: 0 0 0.6rem;
  max-width: 90%;
}

.page-about .about-directory__card > p {
  font-size: 0.9rem;
  color: var(--color-text-dim);
  line-height: 1.7;
  margin: 0 0 1rem;
}

.page-about .about-directory__card ul {
  margin: 0 0 1.2rem;
  padding: 0;
  list-style: none;
}

.page-about .about-directory__card li {
  position: relative;
  padding: 0.3rem 0 0.3rem 1.1rem;
  font-size: 0.88rem;
  color: var(--color-text-dim);
  line-height: 1.65;
}

.page-about .about-directory__card li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--color-neon);
}

.page-about .about-directory__link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  padding-bottom: 0.25rem;
  border-bottom: 2px solid var(--color-accent);
  color: var(--color-text);
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

@media (min-width: 900px) {
  .page-about .about-directory__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem;
  }
}

/* ========== 团队与协作 ========== */
.page-about .about-team {
  position: relative;
  padding: var(--space-section) 0;
}

.page-about .about-team::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 8px;
  background: linear-gradient(90deg, var(--color-neon) 0 25%, var(--color-accent) 25% 60%, var(--color-hot) 60% 100%);
}

.page-about .about-team__lede {
  margin: 1.2rem 0 2.25rem;
  color: var(--color-text-dim);
  line-height: 1.75;
  font-size: 1rem;
  max-width: 66ch;
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
}

.page-about .about-team__card {
  position: relative;
  background: var(--color-surface);
  border-left: 6px solid var(--color-accent);
  border-bottom: 1px solid rgba(57, 255, 20, 0.3);
  padding: 1.8rem 1.5rem 1.5rem;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-about .about-team__card:nth-child(2) {
  border-left-color: var(--color-neon);
}

.page-about .about-team__card:nth-child(3) {
  border-left-color: var(--color-hot);
}

.page-about .about-team__card:hover,
.page-about .about-team__card:focus-within {
  transform: translateY(-4px);
  border-left-color: var(--color-neon);
  background: var(--about-team-hover);
}

.page-about .about-team__role {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--color-neon);
}

.page-about .about-team__card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  margin: 0.6rem 0 0.7rem;
}

.page-about .about-team__card p {
  margin: 0;
  color: var(--color-text-dim);
  line-height: 1.75;
  font-size: 0.92rem;
}

@media (min-width: 900px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem;
  }
}