.page-about {
  overflow-x: hidden;
  padding-bottom: clamp(40px, 7vw, 96px);
}

.page-about > .sg-container:first-child {
  padding-top: 16px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(18px, 4vw, 44px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 40px);
  align-items: center;
}

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

.page-about .about-hero__copy h1 {
  margin: 10px 0 16px;
  font-family: var(--f-display);
  font-size: clamp(28px, 5.4vw, 54px);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: 0.045em;
  color: var(--c-star);
}

.page-about .about-hero__copy .sg-lead {
  max-width: 62ch;
}

.page-about .about-hero__keys {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__keys li {
  min-width: 0;
  padding-left: 12px;
  border-left: 1px solid var(--c-line-strong);
}

.page-about .about-hero__keys strong {
  display: block;
  font-family: var(--f-display);
  font-size: clamp(19px, 2.4vw, 26px);
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--c-electric);
}

.page-about .about-hero__keys span {
  display: block;
  margin-top: 2px;
  font-size: 13px;
  color: var(--c-dust);
}

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

.page-about .about-hero__viz {
  position: relative;
  width: min(100%, 440px);
  aspect-ratio: 1 / 1;
  margin-inline: auto;
  border: 1px solid var(--c-line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(circle at 50% 48%, rgba(124, 92, 255, 0.24), transparent 64%),
    var(--c-glass-soft);
  overflow: hidden;
}

.page-about .about-hero__viz svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-about .about-orbit {
  transform-origin: 200px 200px;
  animation: about-orbit-spin 52s linear infinite;
}

.page-about .about-orbit--b {
  animation-duration: 74s;
  animation-direction: reverse;
}

@keyframes about-orbit-spin {
  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-orbit {
    animation: none;
  }
}

@media (min-width: 600px) {
  .page-about .about-hero__keys {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(32px, 5vw, 72px);
  }
}

/* ---------- 图片容器 ---------- */
.page-about .about-shot {
  position: relative;
  margin: 0;
  min-width: 0;
}

.page-about .about-shot::after {
  content: "";
  position: absolute;
  left: 0;
  right: 14%;
  bottom: -12px;
  height: 1px;
  background: linear-gradient(90deg, var(--c-electric), rgba(70, 229, 255, 0));
}

.page-about .about-shot img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--c-line-strong);
  border-radius: var(--r-md);
  background: var(--c-window);
  object-fit: cover;
}

.page-about .about-shot figcaption {
  margin-top: 16px;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--c-dust);
}

/* ---------- 使命与定位 ---------- */
.page-about .about-mission__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

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

.page-about .about-mission__copy h2 {
  margin: 10px 0 18px;
}

.page-about .about-mission__copy p {
  max-width: var(--w-read);
  margin: 0 0 14px;
  color: var(--c-dust);
}

.page-about .about-mission__copy .sg-btn {
  margin-top: 10px;
}

@media (min-width: 900px) {
  .page-about .about-mission__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    gap: clamp(36px, 5vw, 72px);
  }

  .page-about .about-mission__grid > .about-shot {
    margin-top: 14px;
  }
}

/* ---------- 发展历程 ---------- */
.page-about .about-history .sg-lead {
  max-width: var(--w-read);
}

.page-about .about-shot--wide {
  margin: clamp(26px, 4vw, 40px) 0 0;
}

.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: clamp(26px, 3.2vw, 42px);
  margin: clamp(34px, 5vw, 56px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(
    180deg,
    var(--c-nebula) 0%,
    var(--c-electric) 46%,
    rgba(192, 204, 232, 0.14) 100%
  );
}

.page-about .about-timeline__item {
  position: relative;
  min-width: 0;
  padding-left: 34px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--c-void);
  border: 1px solid var(--c-electric);
  box-shadow: 0 0 0 4px rgba(70, 229, 255, 0.1);
}

.page-about .about-timeline__year {
  display: inline-block;
  margin-bottom: 14px;
  padding: 6px 16px;
  font-family: var(--f-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--c-void);
  background: var(--c-star);
  border: 1px solid var(--c-orbit);
  border-radius: var(--r-sm);
  box-shadow: 4px 4px 0 rgba(124, 92, 255, 0.42), 8px 8px 0 rgba(70, 229, 255, 0.18);
}

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

.page-about .about-timeline__body h3 {
  margin: 0 0 8px;
  font-family: var(--f-display);
  font-size: clamp(17px, 2.1vw, 21px);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--c-star);
}

.page-about .about-timeline__body p {
  max-width: var(--w-read);
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-dust);
}

@media (min-width: 880px) {
  .page-about .about-timeline__item {
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 26px;
    align-items: start;
    padding-left: 46px;
  }

  .page-about .about-timeline__year {
    margin-bottom: 0;
    text-align: center;
  }
}

/* ---------- 团队分工 ---------- */
.page-about .about-team__tabs {
  margin-top: clamp(26px, 4vw, 42px);
}

.page-about .about-team__panel h3 {
  margin: 0 0 10px;
  font-family: var(--f-display);
  font-size: clamp(18px, 2.3vw, 23px);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--c-star);
}

.page-about .about-team__panel p {
  max-width: 68ch;
  margin: 0 0 18px;
  color: var(--c-dust);
}

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

.page-about .about-team__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-star);
}

.page-about .about-team__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border: 1px solid var(--c-amber);
  transform: rotate(45deg);
}

/* ---------- 服务节奏 ---------- */
.page-about .about-promise__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  margin-top: clamp(26px, 4vw, 44px);
}

.page-about .about-promise__item {
  position: relative;
  padding: 24px 20px 22px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(16, 26, 51, 0.74), rgba(5, 7, 14, 0.5));
}

.page-about .about-promise__item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--c-amber), rgba(255, 198, 92, 0));
}

.page-about .about-promise__num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--c-electric);
}

.page-about .about-promise__item h3 {
  margin: 0 0 8px;
  font-family: var(--f-display);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--c-star);
}

.page-about .about-promise__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-dust);
}

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

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

/* ---------- 内容生态 ---------- */
.page-about .about-eco__grid {
  display: grid;
  gap: clamp(26px, 4vw, 56px);
  align-items: center;
}

.page-about .about-eco__grid > div {
  min-width: 0;
}

.page-about .about-eco__grid h2 {
  margin: 10px 0 18px;
}

.page-about .about-eco__grid p {
  max-width: var(--w-read);
  margin: 0 0 14px;
  color: var(--c-dust);
}

.page-about .about-eco__grid .sg-btn {
  margin-top: 10px;
}

.page-about .about-eco__figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-eco__figures li {
  min-width: 0;
  padding: 18px 16px;
  border: 1px solid var(--c-line-strong);
  border-radius: var(--r-md);
  background: var(--c-glass-soft);
}

.page-about .about-eco__figures strong {
  display: block;
  font-family: var(--f-display);
  font-size: clamp(21px, 3vw, 30px);
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--c-amber);
}

.page-about .about-eco__figures span {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--c-dust);
}

@media (min-width: 900px) {
  .page-about .about-eco__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  }
}

/* ---------- 联系我们 ---------- */
.page-about .about-contact__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-about .about-contact__grid > div {
  min-width: 0;
}

.page-about .about-contact__grid h2 {
  margin: 10px 0 18px;
}

.page-about .about-contact__grid p {
  max-width: var(--w-read);
  margin: 0;
  color: var(--c-dust);
}

.page-about .about-contact__list {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-contact__list li {
  display: grid;
  gap: 5px;
  padding: 14px 16px;
  border-left: 2px solid var(--c-nebula);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: var(--c-glass-soft);
}

.page-about .about-contact__list span {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-dust);
}

.page-about .about-contact__list strong {
  font-size: 15px;
  font-weight: 500;
  color: var(--c-star);
  word-break: break-word;
}

@media (min-width: 900px) {
  .page-about .about-contact__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.8fr);
  }

  .page-about .about-contact__grid .about-shot {
    margin-top: 18px;
  }
}

@media (max-width: 420px) {
  .page-about .about-hero__keys,
  .page-about .about-eco__figures {
    grid-template-columns: 1fr;
  }
}