/* 品牌概况 · 页面专属样式 */
.page-about {
  background: linear-gradient(180deg, var(--eui-bg) 0%, var(--eui-bg) 32%, rgba(75,0,130,.32) 62%, var(--eui-bg) 100%);
  color: var(--eui-body);
  overflow-x: clip;
}

/* Hero 品牌宣言 */
.page-about .about-hero {
  position: relative;
  padding: clamp(32px, 6vw, 72px) 0 clamp(48px, 7vw, 88px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -120px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(123,47,247,.35) 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
}

.page-about .about-hero__layout {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-about .about-hero__content {
  position: relative;
  z-index: 2;
}

.page-about .about-hero__content .eui-kicker {
  color: var(--eui-lime);
  letter-spacing: .16em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.page-about .about-hero__content h1 {
  font-weight: 900;
  font-size: clamp(2rem, 5.6vw, 4rem);
  line-height: 1.12;
  color: var(--eui-soft);
  margin: 0 0 12px;
  max-width: 12em;
}

.page-about .about-hero__content .eui-lede {
  font-size: clamp(1.1rem, 2.4vw, 1.6rem);
  font-weight: 300;
  color: var(--eui-purple-bright);
  letter-spacing: .05em;
  margin: 0 0 20px;
}

.page-about .about-hero__text {
  font-size: 1rem;
  line-height: 1.9;
  margin: 0 0 22px;
  max-width: 32em;
}

.page-about .about-hero__manifesto {
  font-weight: 900;
  font-size: clamp(1.2rem, 2.6vw, 1.6rem);
  color: var(--eui-gold);
  display: inline-block;
  padding: 2px 0;
  margin-bottom: 14px;
  border-bottom: 2px solid var(--eui-gold-line);
}

.page-about .about-hero__meta {
  font-size: .78rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: rgba(230,230,250,.48);
  margin: 0;
}

.page-about .about-hero__visual {
  position: relative;
  border-radius: 6px 24px 6px 24px;
  overflow: hidden;
  box-shadow: var(--eui-shadow);
}

.page-about .about-hero__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(11,16,38,.55), transparent 55%);
  pointer-events: none;
}

.page-about .about-hero__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

/* 发展里程碑 */
.page-about .about-milestone {
  padding: clamp(40px, 7vw, 88px) 0;
  position: relative;
}

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

.page-about .about-milestone__aside {
  border-left: 3px solid var(--eui-lime);
  padding-left: 18px;
}

.page-about .about-milestone__aside .eui-kicker {
  color: var(--eui-gold);
  letter-spacing: .18em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.page-about .about-milestone__aside h2 {
  font-weight: 900;
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  color: var(--eui-soft);
  line-height: 1.2;
  margin: 0 0 12px;
}

.page-about .about-milestone__note {
  color: rgba(230,230,250,.72);
  line-height: 1.75;
  margin-bottom: 20px;
}

.page-about .about-milestone__stat {
  background: rgba(123,47,247,.14);
  border: 1px solid var(--eui-line);
  border-radius: 6px 18px 6px 18px;
  padding: 18px 20px;
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-milestone__stat-num {
  font-weight: 900;
  font-size: 2.2rem;
  color: var(--eui-gold);
  line-height: 1;
  animation: page-about-stat .7s ease-out both;
}

.page-about .about-milestone__stat-label {
  font-size: .86rem;
  color: rgba(230,230,250,.72);
}

.page-about .about-milestone__timeline {
  position: relative;
}

.page-about .about-timeline__rail {
  position: absolute;
  left: 16px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  height: calc(100% - 24px);
  opacity: .75;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-timeline__item {
  position: relative;
  margin-left: 36px;
  background: rgba(248,248,255,.04);
  border: 1px solid rgba(123,47,247,.2);
  border-radius: 0 16px 0 16px;
  padding: 22px 24px;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.page-about .about-timeline__item:hover {
  transform: translateX(6px);
  border-color: rgba(57,255,20,.45);
  box-shadow: 0 14px 30px rgba(0,0,0,.3);
}

.page-about .about-timeline__dot {
  position: absolute;
  left: -26px;
  top: 26px;
  width: 12px;
  height: 12px;
  background: var(--eui-lime);
  border-radius: 50%;
  box-shadow: 0 0 16px rgba(57,255,20,.85);
  animation: page-about-dot 2.4s ease-in-out infinite alternate;
}

.page-about .about-timeline__item:nth-child(1) .about-timeline__dot { animation-delay: .1s; }
.page-about .about-timeline__item:nth-child(2) .about-timeline__dot { animation-delay: .55s; }
.page-about .about-timeline__item:nth-child(3) .about-timeline__dot { animation-delay: 1s; }
.page-about .about-timeline__item:nth-child(4) .about-timeline__dot { animation-delay: 1.45s; }

.page-about .about-timeline__year {
  display: inline-block;
  font-weight: 900;
  font-size: .82rem;
  letter-spacing: .16em;
  color: var(--eui-gold);
  background: rgba(255,215,0,.08);
  border: 1px solid var(--eui-gold-line);
  border-radius: 999px;
  padding: 4px 12px;
  margin-bottom: 10px;
}

.page-about .about-timeline__title {
  font-weight: 900;
  font-size: 1.15rem;
  color: var(--eui-soft);
  margin: 0 0 8px;
}

.page-about .about-timeline__desc {
  line-height: 1.75;
  color: rgba(230,230,250,.72);
  font-size: .92rem;
  margin: 0;
}

/* 资质与认证 */
.page-about .about-credential {
  padding: clamp(40px, 7vw, 88px) 0;
  background: linear-gradient(180deg, transparent 0%, rgba(75,0,130,.26) 18%, rgba(75,0,130,.26) 82%, transparent 100%);
}

.page-about .about-credential__header {
  max-width: 40rem;
  margin-bottom: 28px;
  padding-left: 18px;
  border-left: 3px solid var(--eui-gold);
}

.page-about .about-credential__header .eui-kicker {
  color: var(--eui-lime);
  letter-spacing: .18em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.page-about .about-credential__header h2 {
  font-weight: 900;
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  color: var(--eui-soft);
  line-height: 1.2;
  margin: 0 0 10px;
}

.page-about .about-credential__header .eui-lede {
  font-weight: 300;
  color: rgba(230,230,250,.72);
  margin: 0;
}

.page-about .about-credential__grid {
  display: grid;
  gap: 16px;
}

.page-about .about-credential__card {
  position: relative;
  background: linear-gradient(135deg, rgba(75,0,130,.4), rgba(11,16,38,.78));
  border: 1px solid var(--eui-line);
  border-radius: 4px 18px 4px 18px;
  padding: 26px 22px 22px;
  overflow: hidden;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.page-about .about-credential__card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, transparent 32%, rgba(123,47,247,.16) 100%);
  border-bottom-left-radius: 18px;
  pointer-events: none;
}

.page-about .about-credential__num {
  position: absolute;
  top: 14px;
  left: 16px;
  font-weight: 900;
  font-size: .82rem;
  color: rgba(230,230,250,.42);
  letter-spacing: .14em;
}

.page-about .about-credential__icon {
  width: 52px;
  height: 52px;
  display: block;
  margin: 8px 0 16px;
}

.page-about .about-credential__card h3 {
  font-weight: 900;
  font-size: 1.05rem;
  color: var(--eui-soft);
  margin: 0 0 10px;
}

.page-about .about-credential__summary {
  font-size: .92rem;
  line-height: 1.7;
  margin: 0 0 6px;
}

.page-about .about-credential__detail {
  border-top: 1px dashed var(--eui-line-strong);
  padding-top: 10px;
  margin-top: 8px;
  font-size: .84rem;
  line-height: 1.65;
  color: rgba(230,230,250,.62);
}

.page-about .about-credential__card:hover,
.page-about .about-credential__card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(57,255,20,.45);
  box-shadow: 0 12px 28px rgba(0,0,0,.32);
}

.page-about .about-credential__card:hover .about-credential__icon {
  filter: drop-shadow(0 0 10px rgba(57,255,20,.55));
}

.page-about .about-credential__card:hover .about-credential__icon path,
.page-about .about-credential__card:hover .about-credential__icon rect,
.page-about .about-credential__card:hover .about-credential__icon circle {
  stroke: var(--eui-lime);
}

/* 服务能力与本地化 */
.page-about .about-service {
  padding: clamp(40px, 7vw, 88px) 0;
}

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

.page-about .about-service__content {
  position: relative;
  padding-left: 20px;
  border-left: 3px solid var(--eui-purple);
}

.page-about .about-service__content .eui-kicker {
  color: var(--eui-gold);
  letter-spacing: .18em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.page-about .about-service__content h2 {
  font-weight: 900;
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  color: var(--eui-soft);
  line-height: 1.2;
  margin: 0 0 14px;
}

.page-about .about-service__lead {
  line-height: 1.85;
  margin-bottom: 18px;
}

.page-about .about-service__list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-service__list li {
  position: relative;
  padding-left: 22px;
  line-height: 1.7;
  color: rgba(230,230,250,.86);
}

.page-about .about-service__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 9px;
  height: 9px;
  background: var(--eui-lime);
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}

.page-about .about-service__cities {
  line-height: 1.8;
  margin-bottom: 20px;
  color: rgba(230,230,250,.76);
  font-size: .95rem;
  max-width: 36rem;
}

.page-about .about-service__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-service__visual {
  position: relative;
  border-radius: 6px 24px 6px 24px;
  overflow: hidden;
  box-shadow: var(--eui-shadow);
}

.page-about .about-service__visual img,
.page-about .about-service__local-map img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-service__stats {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.page-about .about-service__stat {
  background: rgba(255,215,0,.06);
  border: 1px solid var(--eui-gold-line);
  border-radius: 6px 16px 6px 16px;
  padding: 18px 20px;
}

.page-about .about-service__stat-num {
  display: block;
  font-weight: 900;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  color: var(--eui-gold);
  line-height: 1;
  margin-bottom: 6px;
}

.page-about .about-service__stat-label {
  font-size: .86rem;
  color: rgba(230,230,250,.72);
}

.page-about .about-service__local {
  margin-top: 40px;
  display: grid;
  gap: 24px;
  background: rgba(80,0,36,.36);
  border: 1px solid rgba(255,215,0,.16);
  border-radius: 6px 24px 6px 24px;
  padding: clamp(22px, 5vw, 42px);
}

.page-about .about-service__local-map {
  border-radius: 12px;
  overflow: hidden;
}

.page-about .about-service__local-info h3 {
  font-weight: 900;
  font-size: 1.3rem;
  color: var(--eui-gold);
  margin: 0 0 10px;
}

.page-about .about-service__local-info p {
  line-height: 1.8;
  margin-bottom: 8px;
  color: rgba(230,230,250,.82);
}

.page-about .about-service__local-info a {
  color: var(--eui-purple-bright);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--eui-line-strong);
}

.page-about .about-service__local-info a:hover {
  color: var(--eui-lime);
}

/* 动效 */
@keyframes page-about-rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes page-about-stat {
  from { opacity: 0; transform: scale(.86); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes page-about-dot {
  from { box-shadow: 0 0 10px rgba(57,255,20,.55); }
  to { box-shadow: 0 0 24px rgba(57,255,20,.95); }
}

.page-about .about-hero__content {
  animation: page-about-rise .65s ease-out both;
}

.page-about .about-hero__visual {
  animation: page-about-rise .75s ease-out .12s both;
}

/* 桌面端栅格与节奏 */
@media (min-width: 960px) {
  .page-about .about-hero__layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    column-gap: clamp(32px, 6vw, 72px);
  }

  .page-about .about-hero__text {
    max-width: 34em;
  }

  .page-about .about-milestone__layout {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    column-gap: clamp(28px, 5vw, 64px);
  }

  .page-about .about-credential__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-service__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    column-gap: clamp(28px, 5vw, 64px);
  }

  .page-about .about-service__content {
    padding-left: 24px;
  }

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

  .page-about .about-service__local {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    column-gap: 36px;
    align-items: center;
  }
}