.page-about {
  display: block;
  background: var(--ink);
  color: var(--ivory);
  overflow-x: hidden;
}

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

.page-about .stat-num {
  font-family: var(--mono);
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--cyan);
}

.page-about .about-sec__head {
  max-width: 68ch;
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-about .about-sec__head .section-title {
  margin: 14px 0 0;
}

.page-about .about-sec__lede {
  margin: 16px 0 0;
  max-width: 52ch;
  color: var(--mist);
  line-height: 1.8;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-top: clamp(20px, 3vw, 40px);
  padding-bottom: clamp(34px, 5vw, 64px);
  overflow: hidden;
  background:
    radial-gradient(115% 85% at 90% -12%, rgba(108, 75, 255, 0.3) 0%, rgba(108, 75, 255, 0) 56%),
    radial-gradient(90% 70% at 2% 4%, rgba(53, 230, 210, 0.12) 0%, rgba(53, 230, 210, 0) 60%),
    var(--ink);
}

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

.page-about .about-hero__watermark {
  position: absolute;
  top: clamp(4px, 2vw, 28px);
  right: -3%;
  z-index: 0;
  margin: 0;
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(4.5rem, 17vw, 13rem);
  line-height: 0.78;
  letter-spacing: 0.08em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(154, 163, 199, 0.16);
  pointer-events: none;
  user-select: none;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 30px);
  margin-top: clamp(22px, 4vw, 44px);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--display);
  font-weight: 300;
  font-size: clamp(2.35rem, 7.4vw, 5rem);
  line-height: 1.05;
  letter-spacing: 0.015em;
  color: var(--ivory);
}

.page-about .about-hero__title > span {
  display: block;
}

.page-about .about-hero__title-accent {
  margin-left: clamp(0px, 2vw, 28px);
  color: var(--haze);
}

.page-about .about-hero__body .lede {
  margin: 0;
  max-width: 46ch;
  color: var(--ivory);
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.8;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
  margin: 30px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--ember);
}

.page-about .about-hero__facts > div {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}

.page-about .about-hero__facts dt {
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-about .about-hero__facts dd {
  margin: 0;
  font-family: var(--mono);
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  color: var(--cyan);
}

.page-about .about-hero__banner {
  position: relative;
  margin-top: clamp(28px, 5vw, 60px);
}

.page-about .about-hero__banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 2;
  object-fit: cover;
  border-radius: clamp(18px, 3vw, 30px) var(--radius-sm) clamp(18px, 3vw, 30px) var(--radius-sm);
}

.page-about .about-hero__banner::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: min(56%, 620px);
  height: 3px;
  background: linear-gradient(90deg, rgba(108, 75, 255, 0) 0%, var(--neon) 48%, var(--cyan) 100%);
  transform: skewX(-22deg);
  transform-origin: bottom right;
}

/* ---------- 三件事 ---------- */
.page-about .pledge-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--ember);
}

.page-about .pledge {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: clamp(20px, 3.2vw, 34px) 0;
  border-bottom: 1px solid var(--ember);
}

.page-about .pledge__num {
  font-family: var(--mono);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .pledge__title {
  margin: 0;
  font-size: clamp(1.25rem, 2.6vw, 1.75rem);
  font-weight: 500;
  color: var(--ivory);
}

.page-about .pledge__title::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 2px;
  margin-right: 12px;
  vertical-align: middle;
  background: var(--neon);
  transform: skewX(-24deg);
}

.page-about .pledge__body {
  margin: 0;
  max-width: 62ch;
  color: var(--mist);
  line-height: 1.8;
}

/* ---------- 服务对象 ---------- */
.page-about .audience-rows {
  border-top: 1px solid var(--ember);
}

.page-about .audience-row {
  padding: clamp(22px, 3.4vw, 38px) 0;
  border-bottom: 1px solid var(--ember);
}

.page-about .audience-row__role {
  margin: 0 0 10px;
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--gold);
}

.page-about .audience-row__want {
  margin: 0 0 12px;
  color: var(--mist);
  line-height: 1.8;
}

.page-about .audience-row__get {
  margin: 0;
  padding-left: 16px;
  border-left: 2px solid var(--neon);
  color: var(--ivory);
  line-height: 1.8;
}

/* ---------- 五个阶段 ---------- */
.page-about .stage-track {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 28px;
}

.page-about .stage-track::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold) 0%, rgba(242, 200, 121, 0.3) 46%, rgba(108, 75, 255, 0.42) 100%);
}

.page-about .stage {
  position: relative;
  padding: 0 0 clamp(24px, 3.6vw, 38px);
}

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

.page-about .stage::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 7px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--neon);
  box-shadow: 0 0 0 4px rgba(108, 75, 255, 0.14);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .stage:hover::before,
.page-about .stage:focus-within::before {
  background: var(--gold);
  border-color: var(--gold);
  transform: scale(1.18);
}

.page-about .stage__name {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 8px;
}

.page-about .stage__num {
  font-family: var(--mono);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .stage__label {
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  font-weight: 500;
  color: var(--ivory);
}

.page-about .stage__body {
  margin: 0;
  max-width: 58ch;
  color: var(--mist);
  line-height: 1.85;
}

/* ---------- 团队 ---------- */
.page-about .about-team__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 5vw, 56px);
}

.page-about .about-team__figure {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-about .ring {
  position: relative;
  width: clamp(180px, 46vw, 244px);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: conic-gradient(
    from -90deg,
    var(--neon) 0 27.1%,
    var(--cyan) 27.1% 34.7%,
    var(--gold) 34.7% 50%,
    var(--haze) 50% 70.3%,
    var(--ember) 70.3% 100%
  );
  box-shadow: 0 0 0 1px var(--ember), 0 30px 70px -34px rgba(108, 75, 255, 0.8);
}

.page-about .ring::before {
  content: "";
  position: absolute;
  inset: 21%;
  border-radius: 50%;
  background: var(--ink);
  box-shadow: inset 0 0 0 1px var(--ember);
}

.page-about .ring__center {
  position: absolute;
  inset: 21%;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  text-align: center;
}

.page-about .ring__center b {
  font-family: var(--mono);
  font-size: clamp(1.4rem, 4.4vw, 1.9rem);
  font-weight: 500;
  line-height: 1;
  color: var(--ivory);
}

.page-about .ring__center i {
  font-style: normal;
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-about .ring-legend {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  font-size: var(--fs-14);
  color: var(--mist);
}

.page-about .ring-legend li {
  display: flex;
  align-items: center;
  gap: 10px;
  line-height: 1.5;
}

.page-about .dot {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.page-about .dot--neon { background: var(--neon); }
.page-about .dot--cyan { background: var(--cyan); }
.page-about .dot--gold { background: var(--gold); }
.page-about .dot--haze { background: var(--haze); }
.page-about .dot--ember { background: var(--ember); }

.page-about .about-team__text .section-title {
  margin: 14px 0 18px;
}

.page-about .about-team__text p {
  margin: 0 0 16px;
  max-width: 62ch;
  color: var(--mist);
  line-height: 1.85;
}

.page-about .about-team__media {
  margin: 26px 0 0;
}

/* ---------- 海外业务 ---------- */
.page-about .about-global__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 56px);
}

.page-about .about-global__text .section-title {
  margin: 14px 0 18px;
}

.page-about .about-global__text p {
  margin: 0 0 16px;
  max-width: 60ch;
  color: var(--mist);
  line-height: 1.85;
}

.page-about .about-global__stats {
  list-style: none;
  margin: 26px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--ember);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 20px;
}

.page-about .about-global__stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-about .about-global__stats li span:last-child {
  font-size: var(--fs-14);
  color: var(--mist);
}

.page-about .about-global__media {
  margin: 0;
}

/* ---------- 服务标准 ---------- */
.page-about .about-standards__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
}

.page-about .about-standards__aside p {
  margin: 16px 0 0;
  max-width: 40ch;
  color: var(--mist);
  line-height: 1.85;
}

.page-about .standard-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--ember);
}

.page-about .standard {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: clamp(18px, 3vw, 28px) 0;
  border-bottom: 1px solid var(--ember);
}

.page-about .standard__value {
  font-family: var(--mono);
  font-size: clamp(1.25rem, 2.6vw, 1.75rem);
  color: var(--cyan);
  letter-spacing: 0.01em;
}

.page-about .standard__title {
  margin: 0 0 6px;
  font-size: var(--fs-16);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ivory);
}

.page-about .standard__text p {
  margin: 0;
  max-width: 58ch;
  color: var(--mist);
  line-height: 1.8;
}

/* ---------- 下一步 ---------- */
.page-about .about-next__panel {
  padding: clamp(28px, 5vw, 56px);
  border-radius: var(--radius-lg);
}

.page-about .about-next__links {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: 1px solid var(--ember);
}

.page-about .about-next__links li {
  border-bottom: 1px solid var(--ember);
  min-width: 0;
}

.page-about .about-next__links a {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 0;
  color: inherit;
  text-decoration: none;
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-next__links a span {
  font-size: var(--fs-20);
  font-weight: 500;
  color: var(--ivory);
  transition: color var(--dur) var(--ease);
}

.page-about .about-next__links a em {
  font-style: normal;
  font-size: var(--fs-14);
  color: var(--mist);
  line-height: 1.6;
}

.page-about .about-next__links a:hover,
.page-about .about-next__links a:focus-visible {
  transform: translateX(6px);
}

.page-about .about-next__links a:hover span,
.page-about .about-next__links a:focus-visible span {
  color: var(--cyan);
}

.page-about .about-next__contact {
  margin: 28px 0 0;
  color: var(--mist);
  line-height: 1.7;
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 620px) {
  .page-about .about-global__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-about .standard {
    grid-template-columns: minmax(0, 180px) minmax(0, 1fr);
    gap: 0 32px;
    align-items: baseline;
  }
}

@media (min-width: 780px) {
  .page-about .about-next__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }
}

@media (min-width: 880px) {
  .page-about .stage {
    display: grid;
    grid-template-columns: minmax(0, 210px) minmax(0, 1fr);
    gap: 0 36px;
    align-items: baseline;
  }
  .page-about .stage__name {
    margin-bottom: 0;
  }
  .page-about .stage__body {
    max-width: 64ch;
  }
}

@media (min-width: 900px) {
  .page-about .pledge {
    grid-template-columns: 72px minmax(0, 30fr) minmax(0, 62fr);
    gap: 0 30px;
    align-items: start;
  }
  .page-about .audience-row {
    display: grid;
    grid-template-columns: minmax(0, 26fr) minmax(0, 36fr) minmax(0, 38fr);
    gap: 0 34px;
    align-items: start;
  }
  .page-about .audience-row__role,
  .page-about .audience-row__want {
    margin-bottom: 0;
  }
}

@media (min-width: 920px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 46fr) minmax(0, 54fr);
    gap: clamp(30px, 5vw, 76px);
    align-items: end;
  }
  .page-about .about-team__inner {
    grid-template-columns: minmax(0, 36fr) minmax(0, 64fr);
    align-items: start;
  }
  .page-about .about-team__figure {
    align-items: flex-start;
  }
  .page-about .about-global__inner {
    grid-template-columns: minmax(0, 58fr) minmax(0, 42fr);
    align-items: center;
  }
  .page-about .about-standards__inner {
    grid-template-columns: minmax(0, 34fr) minmax(0, 66fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .stage::before,
  .page-about .about-next__links a,
  .page-about .about-next__links a span {
    transition: none;
  }
  .page-about .stage:hover::before,
  .page-about .stage:focus-within::before {
    transform: none;
  }
  .page-about .about-next__links a:hover,
  .page-about .about-next__links a:focus-visible {
    transform: none;
  }
}