.page-about {
  --about-line: rgba(247, 251, 255, 0.16);
  --about-line-dark: rgba(6, 43, 79, 0.14);
  position: relative;
  background: var(--ly-deep);
  color: var(--ly-foam);
  font-family: var(--ly-font-sans);
  overflow-x: clip;
}

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

.page-about .about-h2 {
  margin: 0;
  font-size: clamp(26px, 4.4vw, 44px);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: -0.01em;
}

.page-about .ly-eyebrow {
  margin: 0 0 14px;
}

/* ---------- 页面索引 ---------- */
.page-about .about-rail {
  display: none;
}

@media (min-width: 1560px) {
  .page-about .about-rail {
    position: fixed;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 30;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 14px 14px;
    border-radius: var(--ly-radius-m);
    background: rgba(2, 26, 48, 0.66);
    border: 1px solid rgba(247, 251, 255, 0.12);
    backdrop-filter: blur(6px);
  }

  .page-about .about-rail__link {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: 11px;
    letter-spacing: 0.1em;
    color: rgba(247, 251, 255, 0.6);
    text-decoration: none;
    white-space: nowrap;
    transition: color 0.2s var(--ly-ease);
  }

  .page-about .about-rail__link span {
    font-family: var(--ly-font-mono);
    font-weight: 700;
    color: var(--ly-electric);
  }

  .page-about .about-rail__link:hover {
    color: var(--ly-flame);
  }
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(34px, 6vw, 84px) 0 clamp(40px, 6vw, 72px);
  background:
    radial-gradient(120% 88% at 88% -10%, rgba(25, 211, 197, 0.18), transparent 58%),
    radial-gradient(92% 84% at -6% 24%, rgba(255, 107, 26, 0.2), transparent 62%),
    var(--ly-deep);
}

.page-about .about-hero__inner {
  display: grid;
  gap: 16px;
  padding-bottom: clamp(28px, 4vw, 52px);
}

.page-about .about-hero__crumb {
  margin-bottom: 6px;
}

.page-about .about-hero__title {
  margin: 0;
  font-size: clamp(38px, 8.4vw, 104px);
  font-weight: 200;
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--ly-foam);
  max-width: 18ch;
}

.page-about .about-hero__title span {
  display: block;
  color: var(--ly-flame);
}

.page-about .about-hero__lead {
  margin: 4px 0 0;
  max-width: 64ch;
  color: rgba(247, 251, 255, 0.82);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
  margin: 18px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--about-line);
}

.page-about .about-hero__facts div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-hero__facts dt {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(247, 251, 255, 0.55);
}

.page-about .about-hero__facts dd {
  margin: 0;
  font-family: var(--ly-font-mono);
  font-weight: 700;
  font-size: clamp(20px, 3vw, 28px);
  color: var(--ly-electric);
}

.page-about .about-hero__media {
  margin-top: clamp(20px, 4vw, 46px);
}

.page-about .about-hero__media .ly-media {
  border-radius: var(--ly-radius-l);
  overflow: hidden;
}

/* ---------- 品牌起点 ---------- */
.page-about .about-origin {
  position: relative;
  z-index: 2;
  margin-top: -clamp(20px, 3.4vw, 44px);
  padding: clamp(48px, 7vw, 100px) 0;
  background: var(--ly-foam);
  color: var(--ly-deep);
  border-radius: clamp(22px, 3.6vw, 46px) clamp(22px, 3.6vw, 46px) 0 0;
}

.page-about .about-origin .ly-eyebrow {
  color: var(--ly-compete);
}

.page-about .about-origin__grid {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
}

@media (min-width: 900px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(150px, 3fr) 9fr;
  }
}

.page-about .about-origin__side::after {
  content: "";
  display: block;
  margin-top: 26px;
  width: 10px;
  height: 138px;
  border-left: 1px solid var(--ly-flame);
  background: repeating-linear-gradient(180deg, var(--ly-reef) 0 1px, transparent 1px 14px);
}

.page-about .about-origin__body p {
  margin: 18px 0 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: #24405a;
  max-width: 68ch;
}

.page-about .about-origin__points {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

@media (min-width: 760px) {
  .page-about .about-origin__points {
    grid-template-columns: repeat(3, 1fr);
  }
}

.page-about .about-origin__points li {
  padding: 20px 18px;
  border-radius: var(--ly-radius-m);
  background: var(--ly-mist);
  border-left: 3px solid var(--ly-flame);
}

.page-about .about-origin__points li:nth-child(2) {
  border-left-color: var(--ly-electric);
}

.page-about .about-origin__points li:nth-child(3) {
  border-left-color: var(--ly-compete);
}

.page-about .about-origin__points h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--ly-deep);
}

.page-about .about-origin__points p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ly-reef);
}

/* ---------- 发展历程 ---------- */
.page-about .about-journey {
  position: relative;
  margin-top: clamp(34px, 6vw, 80px);
  padding: clamp(52px, 8vw, 112px) 0;
  border-radius: clamp(22px, 3.6vw, 46px);
  overflow: hidden;
  background: linear-gradient(178deg, var(--ly-deep) 0%, var(--ly-ink) 72%);
}

.page-about .about-journey__bg {
  position: absolute;
  inset: 0;
  opacity: 0.18;
  pointer-events: none;
}

.page-about .about-journey__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.page-about .about-journey__lead {
  margin: 16px 0 0;
  max-width: 62ch;
  color: rgba(247, 251, 255, 0.78);
}

.page-about .about-timeline {
  list-style: none;
  margin: clamp(32px, 5vw, 56px) 0 0;
  padding: 0;
  display: grid;
  gap: 34px;
}

.page-about .about-node {
  position: relative;
  padding: 24px 22px 24px 36px;
  border-radius: var(--ly-radius-l);
  background: rgba(11, 74, 122, 0.5);
  border: 1px solid var(--about-line);
  transition: border-color 0.22s var(--ly-ease), transform 0.22s var(--ly-ease);
}

.page-about .about-node:hover {
  border-color: var(--ly-flame);
  transform: translateY(-4px);
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 30px;
  width: 3px;
  height: 38px;
  border-radius: 3px;
  background: var(--ly-flame);
}

.page-about .about-node:nth-child(2)::before {
  background: var(--ly-electric);
}

.page-about .about-node:nth-child(3)::before {
  background: var(--ly-sunset);
}

.page-about .about-node:nth-child(4)::before {
  background: var(--ly-foam);
}

.page-about .about-node + .about-node::after {
  content: "";
  position: absolute;
  left: 17px;
  top: -30px;
  width: 1px;
  height: 28px;
  background: linear-gradient(180deg, rgba(25, 211, 197, 0), rgba(25, 211, 197, 0.72));
}

.page-about .about-node__stage {
  margin: 0 0 10px;
  font-family: var(--ly-font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ly-flame);
}

.page-about .about-node h3 {
  margin: 0 0 10px;
  font-size: clamp(19px, 2.6vw, 26px);
  font-weight: 600;
  color: var(--ly-foam);
}

.page-about .about-node p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(247, 251, 255, 0.76);
  max-width: 60ch;
}

@media (min-width: 900px) {
  .page-about .about-timeline {
    grid-template-columns: repeat(12, 1fr);
    column-gap: 24px;
    row-gap: 40px;
  }

  .page-about .about-node {
    grid-column: 1 / span 7;
  }

  .page-about .about-node:nth-child(even) {
    grid-column: 6 / span 7;
  }

  .page-about .about-node:nth-child(3) {
    grid-column: 2 / span 6;
  }

  .page-about .about-node + .about-node::after {
    top: -36px;
    height: 34px;
  }
}

/* ---------- 内容体系 ---------- */
.page-about .about-capability {
  margin-top: clamp(34px, 6vw, 80px);
  padding: clamp(52px, 8vw, 112px) 0;
  background: var(--ly-foam);
  color: var(--ly-deep);
  border-radius: clamp(22px, 3.6vw, 46px);
}

.page-about .about-capability .ly-eyebrow {
  color: var(--ly-compete);
}

.page-about .about-capability__lead {
  margin: 16px 0 0;
  max-width: 62ch;
  color: #24405a;
}

.page-about .about-capability__grid {
  display: grid;
  gap: clamp(30px, 5vw, 58px);
  margin-top: clamp(28px, 4vw, 48px);
}

@media (min-width: 960px) {
  .page-about .about-capability__grid {
    grid-template-columns: 7fr 5fr;
    align-items: center;
  }
}

.page-about .about-lines {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-lines li {
  padding: 20px 22px;
  border-radius: var(--ly-radius-m);
  background: linear-gradient(118deg, var(--ly-mist) 0%, rgba(220, 234, 245, 0.28) 100%);
  border: 1px solid rgba(6, 43, 79, 0.08);
}

.page-about .about-lines h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--ly-deep);
}

.page-about .about-lines p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--ly-reef);
}

.page-about .about-ring-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.page-about .about-ring {
  position: relative;
  width: min(250px, 66vw);
  aspect-ratio: 1 / 1;
}

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

.page-about .about-ring__core {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: var(--ly-font-mono);
  font-weight: 700;
  font-size: clamp(32px, 6vw, 44px);
  line-height: 1;
  color: var(--ly-deep);
}

.page-about .about-ring__core small {
  display: block;
  margin-top: 8px;
  font-family: var(--ly-font-sans);
  font-weight: 400;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ly-reef);
}

.page-about .about-ring__legend {
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
  display: grid;
  gap: 10px 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-about .about-ring__legend li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ly-deep);
}

.page-about .about-ring__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex: none;
}

.page-about .about-ring__pct {
  margin-left: auto;
  font-family: var(--ly-font-mono);
  font-weight: 700;
  color: var(--ly-compete);
}

/* ---------- 团队与协作 ---------- */
.page-about .about-team {
  padding: clamp(52px, 8vw, 112px) 0;
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

@media (min-width: 960px) {
  .page-about .about-team__grid {
    grid-template-columns: 6fr 6fr;
    align-items: center;
  }
}

.page-about .about-team__lead {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(247, 251, 255, 0.78);
  max-width: 60ch;
}

.page-about .about-teams {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

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

.page-about .about-teams li {
  padding: 18px 18px;
  border-radius: var(--ly-radius-m);
  background: rgba(11, 74, 122, 0.42);
  border: 1px solid var(--about-line);
}

.page-about .about-teams h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--ly-electric);
}

.page-about .about-teams p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(247, 251, 255, 0.74);
}

.page-about .about-team__eco {
  margin: 24px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--ly-flame);
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(247, 251, 255, 0.72);
  max-width: 62ch;
}

.page-about .about-team__media .ly-media {
  border-radius: var(--ly-radius-l);
  overflow: hidden;
}

/* ---------- 服务范围 ---------- */
.page-about .about-scale {
  margin: clamp(28px, 5vw, 64px) 0;
  padding: clamp(52px, 8vw, 112px) 0;
  border-radius: clamp(22px, 3.6vw, 46px);
  background: linear-gradient(158deg, var(--ly-compete) 0%, var(--ly-deep) 62%, var(--ly-ink) 100%);
}

.page-about .about-scale__grid {
  margin: clamp(28px, 4vw, 48px) 0 0;
  display: grid;
  gap: 18px;
}

@media (min-width: 700px) {
  .page-about .about-scale__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1060px) {
  .page-about .about-scale__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.page-about .about-scale__item {
  padding: 24px 22px;
  border-radius: var(--ly-radius-l);
  background: rgba(247, 251, 255, 0.06);
  border: 1px solid var(--about-line);
  transition: border-color 0.22s var(--ly-ease), transform 0.22s var(--ly-ease);
}

.page-about .about-scale__item:hover {
  border-color: var(--ly-flame);
  transform: translateY(-4px);
}

.page-about .about-scale__item dt {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ly-electric);
}

.page-about .about-scale__item dd {
  margin: 12px 0 10px;
  font-family: var(--ly-font-mono);
  font-weight: 700;
  font-size: clamp(34px, 5.4vw, 54px);
  line-height: 1;
  color: var(--ly-foam);
}

.page-about .about-unit {
  margin-left: 6px;
  font-family: var(--ly-font-sans);
  font-weight: 500;
  font-size: 0.4em;
  color: var(--ly-sunset);
}

.page-about .about-scale__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(247, 251, 255, 0.7);
}

/* ---------- 品牌承诺 ---------- */
.page-about .about-promise {
  position: relative;
  padding: clamp(52px, 8vw, 108px) 0 clamp(64px, 9vw, 124px);
  background:
    radial-gradient(86% 120% at 10% 108%, rgba(255, 107, 26, 0.28), transparent 62%),
    radial-gradient(70% 100% at 96% 0%, rgba(25, 211, 197, 0.14), transparent 60%),
    var(--ly-deep);
}

.page-about .about-promise__motto {
  position: relative;
  display: inline-block;
  margin: 22px 0 0;
  padding-bottom: 14px;
  font-size: clamp(21px, 3.4vw, 34px);
  font-weight: 300;
  line-height: 1.34;
  color: var(--ly-foam);
  max-width: 24ch;
  cursor: default;
}

.page-about .about-promise__motto::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--ly-flame) 0 10px, transparent 10px 18px);
  transform: scaleX(0.22);
  transform-origin: left center;
  transition: transform 0.42s var(--ly-ease);
}

.page-about .about-promise__motto:hover::after {
  transform: scaleX(1);
}

.page-about .about-promise__text {
  margin: 22px 0 0;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.82;
  color: rgba(247, 251, 255, 0.78);
}

.page-about .about-promise__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-node,
  .page-about .about-scale__item,
  .page-about .about-promise__motto::after {
    transition: none;
  }
}
</style>