.page-about {
  overflow-x: clip;
}

/* ===== Hero 首屏 ===== */
.page-about .about-hero {
  position: relative;
  background:
    radial-gradient(circle at 12% 18%, rgba(138, 43, 226, 0.22), transparent 36%),
    radial-gradient(circle at 88% 82%, rgba(255, 215, 0, 0.1), transparent 32%),
    linear-gradient(180deg, var(--bg-deep), var(--bg));
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(255, 215, 0, 0.22) 1px, transparent 1.6px),
    radial-gradient(circle, rgba(138, 43, 226, 0.28) 1px, transparent 1.6px);
  background-size: 64px 64px, 96px 96px;
  background-position: 0 0, 18px 36px;
  animation: about-drift 22s linear infinite;
  opacity: 0.5;
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: -6%;
  right: -6%;
  bottom: -18px;
  height: 42px;
  background: linear-gradient(96deg, var(--gold) 0%, var(--purple) 46%, rgba(255, 215, 0, 0.2) 78%, transparent 96%);
  transform: rotate(-1.5deg);
  opacity: 0.5;
  pointer-events: none;
  z-index: 0;
}

@keyframes about-drift {
  to {
    background-position: -128px 220px, -192px 210px;
  }
}

.page-about .about-hero__inner {
  max-width: var(--content-max);
  margin-inline: auto;
  padding: 52px var(--gutter) 76px;
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.page-about .about-hero__content {
  order: 1;
}

.page-about .about-hero__visual {
  order: 2;
  margin: 0;
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card), var(--glow-gold);
  transform: rotate(-1deg);
  transition: transform var(--ease), box-shadow var(--ease);
}

.page-about .about-hero__visual::before {
  content: "";
  position: absolute;
  right: 18px;
  bottom: 18px;
  width: 72px;
  height: 8px;
  background: linear-gradient(90deg, var(--orange), var(--gold));
  border-radius: 999px;
  box-shadow: 0 0 14px rgba(255, 107, 53, 0.4);
  z-index: 2;
}

.page-about .about-hero__visual:hover {
  transform: rotate(0deg) translateY(-4px);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.45), 0 0 30px rgba(255, 215, 0, 0.2);
}

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

.page-about .about-hero__content .breadcrumb {
  margin-bottom: 22px;
}

.page-about .about-hero__eyebrow {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
}

.page-about .about-hero__eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--gold);
  flex: 0 0 28px;
}

.page-about .about-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(30px, 4.2vw, 54px);
  line-height: 1.18;
  margin: 0 0 18px;
  color: var(--text);
  letter-spacing: 0.01em;
}

.page-about .about-hero__lead {
  font-size: 16px;
  line-height: 1.85;
  color: rgba(229, 231, 235, 0.82);
  max-width: 58ch;
  margin: 0 0 28px;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  max-width: 560px;
}

.page-about .about-hero__stat {
  padding: 16px;
  background: rgba(31, 34, 41, 0.6);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  position: relative;
}

.page-about .about-hero__stat::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 64px;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--purple));
  border-radius: 0 999px 999px 0;
}

.page-about .about-hero__stat dt {
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.page-about .about-hero__stat dd {
  font-family: var(--font-data);
  font-size: 26px;
  font-weight: 700;
  color: var(--gold);
  margin: 0;
  line-height: 1.2;
}

/* ===== 左右分屏主体 ===== */
.page-about .about-split {
  display: block;
  padding-block: 48px 72px;
}

.page-about .about-split__side {
  margin-bottom: 40px;
}

/* 品牌理念固定侧 */
.page-about .about-credo {
  background: linear-gradient(145deg, rgba(255, 215, 0, 0.06), rgba(138, 43, 226, 0.1));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}

.page-about .about-credo__index {
  font-family: var(--font-data);
  color: var(--orange);
  font-size: 13px;
  letter-spacing: 0.12em;
  margin: 0 0 10px;
}

.page-about .about-credo h2 {
  font-family: var(--font-head);
  font-size: 26px;
  color: var(--gold);
  margin: 0 0 12px;
}

.page-about .about-credo__text {
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
}

.page-about .about-credo__quote {
  margin: 20px 0;
  padding: 16px 18px;
  border-left: 3px solid var(--gold);
  background: rgba(255, 107, 53, 0.06);
  color: var(--text);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 15px;
  line-height: 1.75;
}

.page-about .about-credo__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
}

.page-about .about-credo__tags li {
  padding: 6px 14px;
  border: 1px solid var(--line-violet);
  border-radius: 999px;
  color: var(--gold);
  font-size: 13px;
  background: rgba(138, 43, 226, 0.08);
}

.page-about .about-credo__badges {
  display: grid;
  gap: 10px;
}

.page-about .about-credo__badge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: var(--bg-elev);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  font-size: 13px;
}

.page-about .about-credo__badge-key {
  font-family: var(--font-data);
  color: var(--orange);
  font-size: 12px;
  background: rgba(255, 107, 53, 0.1);
  border: 1px solid rgba(255, 107, 53, 0.25);
  border-radius: 4px;
  padding: 2px 8px;
  flex: 0 0 auto;
}

/* 右侧内容区 */
.page-about .about-section {
  padding-block: 48px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-section:first-child {
  padding-top: 0;
}

.page-about .about-section:last-child {
  border-bottom: 0;
}

.page-about .about-section__kicker {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--orange);
  margin: 0 0 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-about .about-section__kicker::after {
  content: "";
  flex: 0 0 72px;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

.page-about .about-section h2 {
  font-family: var(--font-head);
  font-size: clamp(26px, 3vw, 40px);
  color: var(--text);
  line-height: 1.25;
  margin: 0 0 16px;
}

.page-about .about-section h2::before {
  content: "";
  display: block;
  width: 36px;
  height: 5px;
  background: linear-gradient(90deg, var(--gold), var(--orange));
  border-radius: 999px;
  margin-bottom: 12px;
}

.page-about .about-section__lead,
.page-about .about-section__body {
  font-size: 15px;
  line-height: 1.85;
  color: rgba(229, 231, 235, 0.82);
  max-width: 62ch;
  margin: 0 0 12px;
}

.page-about .about-section__more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  font-size: 14px;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 215, 0, 0.35);
  padding-bottom: 2px;
  transition: border-color var(--ease), color var(--ease);
}

.page-about .about-section__more::after {
  content: "→";
  color: var(--orange);
}

.page-about .about-section__more:hover {
  color: var(--orange);
  border-color: var(--orange);
}

/* 品牌理念卡片 */
.page-about .about-philosophy__grid {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.page-about .about-philosophy__item {
  padding: 20px;
  background: var(--bg-elev);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: var(--radius);
  position: relative;
  transition: border-color var(--ease), transform var(--ease);
}

.page-about .about-philosophy__item::after {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

.page-about .about-philosophy__item:hover {
  border-color: var(--line-violet);
  transform: translateY(-3px);
}

.page-about .about-philosophy__num {
  font-family: var(--font-data);
  color: var(--gold);
  font-size: 13px;
}

.page-about .about-philosophy__item h3 {
  font-size: 16px;
  color: var(--text);
  margin: 6px 0 8px;
}

.page-about .about-philosophy__item p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
  margin: 0;
}

/* 发展历程时间轴 */
.page-about .about-timeline {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--gold), var(--purple) 60%, rgba(138, 43, 226, 0.08));
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 56px;
  margin-bottom: 28px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 6px;
  width: 18px;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--gold), var(--orange));
  box-shadow: 0 0 10px rgba(255, 215, 0, 0.45);
}

.page-about .about-timeline__item::after {
  content: "";
  position: absolute;
  left: 16px;
  top: 4px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
}

.page-about .about-timeline__year {
  font-family: var(--font-data);
  color: var(--gold);
  font-size: 14px;
  background: rgba(255, 215, 0, 0.07);
  border: 1px solid var(--line);
  padding: 4px 12px;
  border-radius: 999px;
}

.page-about .about-timeline__card {
  background: var(--bg-elev);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-left: 2px solid rgba(255, 215, 0, 0.35);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-top: 10px;
  transition: border-color var(--ease), background var(--ease);
}

.page-about .about-timeline__card:hover {
  border-left-color: var(--gold);
  background: var(--bg-elev-2);
}

.page-about .about-timeline__card h3 {
  font-size: 17px;
  color: var(--text);
  margin: 0 0 6px;
}

.page-about .about-timeline__card p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.75;
  margin: 0;
}

/* 图文错位插图 */
.page-about .about-timeline__figure,
.page-about .about-tech__figure {
  margin: 32px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elev);
  box-shadow: var(--shadow-card);
}

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

.page-about .about-timeline__figure figcaption,
.page-about .about-tech__figure figcaption {
  font-size: 13px;
  color: var(--text-dim);
  padding: 12px 16px;
  border-top: 1px solid var(--line);
}

/* 技术实力 */
.page-about .about-tech__grid {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.page-about .about-tech-card {
  background: linear-gradient(160deg, rgba(138, 43, 226, 0.08), rgba(255, 215, 0, 0.03));
  border: 1px solid var(--line-violet);
  border-radius: var(--radius);
  padding: 22px;
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.page-about .about-tech-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold);
  box-shadow: var(--glow-violet);
}

.page-about .about-tech-card__icon {
  width: 42px;
  height: 42px;
  margin-bottom: 14px;
}

.page-about .about-tech-card__icon svg {
  width: 100%;
  height: 100%;
}

.page-about .about-tech-card h3 {
  font-size: 16px;
  color: var(--text);
  margin: 0 0 8px;
}

.page-about .about-tech-card p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
  margin: 0;
}

/* 团队与文化 */
.page-about .about-culture__grid {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.page-about .about-culture-item {
  background: rgba(255, 215, 0, 0.04);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color var(--ease), background var(--ease);
}

.page-about .about-culture-item:hover {
  border-color: var(--line-violet);
  background: var(--bg-elev);
}

.page-about .about-culture-item__icon {
  width: 40px;
  height: 40px;
}

.page-about .about-culture-item__icon svg {
  width: 100%;
  height: 100%;
}

.page-about .about-culture-item h3 {
  font-size: 16px;
  color: var(--text);
  margin: 14px 0 8px;
}

.page-about .about-culture-item p {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.7;
  margin: 0;
}

/* 资质与合规 */
.page-about .about-compliance__list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-compliance__list li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px 20px;
  background: rgba(31, 34, 41, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: var(--radius);
  transition: border-color var(--ease), transform var(--ease);
}

.page-about .about-compliance__list li:hover {
  border-color: var(--line-violet);
  transform: translateX(3px);
}

.page-about .about-compliance__mark {
  flex: 0 0 14px;
  width: 14px;
  height: 14px;
  margin-top: 4px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--gold), var(--purple));
  box-shadow: 0 0 12px rgba(255, 215, 0, 0.3);
}

.page-about .about-compliance__list strong {
  font-size: 16px;
  color: var(--text);
}

.page-about .about-compliance__list p {
  margin: 6px 0 0;
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
}

.page-about .about-compliance__cta {
  margin-top: 28px;
  padding: 22px 24px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.08), rgba(138, 43, 226, 0.14));
  border: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}

.page-about .about-compliance__cta p {
  flex: 1 1 100%;
  margin: 0;
  color: var(--text);
  font-size: 15px;
  line-height: 1.8;
}

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

/* ===== 响应式断点 ===== */
@media (min-width: 640px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

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

  .page-about .about-compliance__cta p {
    flex: 1 1 auto;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__inner {
    display: grid;
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: center;
    gap: clamp(40px, 6vw, 80px);
    padding: 72px var(--gutter) 108px;
    min-height: min(680px, calc(100vh - var(--header-h)));
  }

  .page-about .about-hero__content {
    order: 2;
  }

  .page-about .about-hero__visual {
    order: 1;
  }
}

@media (min-width: 1000px) {
  .page-about .about-split {
    display: grid;
    grid-template-columns: 340px minmax(0, 1fr);
    gap: clamp(48px, 6vw, 96px);
    align-items: start;
    padding-block: 72px 96px;
  }

  .page-about .about-split__side {
    position: sticky;
    top: calc(var(--header-h) + 32px);
    margin-bottom: 0;
  }
}

@media (min-width: 1200px) {
  .page-about .about-culture__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}