.page-about {
  --about-radius: var(--hth-radius-xl);
  --about-cream-line: rgba(27, 18, 12, .1);
  color: var(--hth-ink);
  background: var(--hth-cream);
  overflow-x: hidden;
}

/* ---------- 通用排版件 ---------- */
.page-about .about-kicker {
  margin: 0;
  font-family: var(--hth-font-mono);
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--hth-cyan-ink);
}

.page-about .about-kicker--light {
  color: var(--hth-cyan);
}

.page-about .about-h2 {
  margin: .35em 0 .5em;
  font-family: var(--hth-font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 5.2vw, 2.7rem);
  line-height: 1.14;
  letter-spacing: -.015em;
  color: var(--hth-navy);
}

.page-about .about-h2--light {
  color: var(--hth-white);
}

.page-about .about-sub {
  margin: 0;
  max-width: 66ch;
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(27, 18, 12, .74);
}

.page-about .about-section-head {
  margin-bottom: clamp(24px, 3.6vw, 44px);
}

.page-about .about-unit {
  margin-left: 3px;
  font-size: .62em;
  font-weight: 500;
  color: inherit;
  opacity: .72;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(18px, 3vw, 34px);
  padding-bottom: clamp(34px, 5vw, 62px);
  background:
    radial-gradient(120% 90% at 92% 0%, rgba(0, 229, 255, .12), transparent 58%),
    radial-gradient(80% 70% at 4% 100%, rgba(242, 193, 78, .14), transparent 62%),
    var(--hth-cream);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
  align-items: start;
  margin-top: clamp(16px, 2.6vw, 30px);
}

.page-about .about-hero__intro {
  position: relative;
  min-width: 0;
}

.page-about .about-hero__annot {
  display: none;
}

.page-about .about-hero__title {
  margin: .3em 0 .45em;
  font-family: var(--hth-font-display);
  font-weight: 900;
  font-size: clamp(2rem, 7.6vw, 3.7rem);
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--hth-navy);
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 44ch;
  font-size: 1.01rem;
  line-height: 1.88;
  color: rgba(27, 18, 12, .8);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 2.8vw, 30px);
}

.page-about .about-hero__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(20px, 2.8vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__nav a {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid rgba(10, 26, 58, .16);
  border-radius: var(--hth-radius-pill);
  background: var(--hth-white);
  color: var(--hth-navy);
  font-size: .82rem;
  text-decoration: none;
  transition: border-color .22s ease, color .22s ease, transform .22s ease;
}

.page-about .about-hero__nav a:hover {
  border-color: var(--hth-cyan);
  color: var(--hth-cyan-ink);
  transform: translateY(-2px);
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  min-width: 0;
  border-radius: var(--about-radius);
  overflow: hidden;
  background: var(--hth-navy);
  box-shadow: var(--hth-shadow-panel);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-image:
    linear-gradient(rgba(0, 229, 255, .16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, .16) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: .5;
  pointer-events: none;
}

.page-about .about-hero__caption {
  margin: 0;
  padding: 13px 18px;
  background: var(--hth-navy);
  color: rgba(255, 255, 255, .78);
  font-size: .82rem;
  line-height: 1.6;
  letter-spacing: .02em;
}

.page-about .about-hero__figures {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: rgba(255, 255, 255, .14);
}

.page-about .about-hero__figures > div {
  padding: 14px 12px 16px;
  background: var(--hth-navy);
}

.page-about .about-hero__figures dt {
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--hth-steel);
}

.page-about .about-hero__figures dd {
  margin: 7px 0 0;
  font-family: var(--hth-font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--hth-gold);
  line-height: 1.2;
}

/* ---------- 品牌定位 ---------- */
.page-about .about-position {
  padding-top: clamp(30px, 4.5vw, 56px);
}

.page-about .about-position__panel {
  position: relative;
  padding: clamp(26px, 4.6vw, 58px);
  border-radius: var(--about-radius);
  background:
    radial-gradient(90% 130% at 100% 0%, rgba(0, 229, 255, .18), transparent 56%),
    linear-gradient(158deg, var(--hth-navy), var(--hth-midnight));
  color: var(--hth-white);
  box-shadow: var(--hth-shadow-panel);
  overflow: hidden;
}

.page-about .about-position__head {
  max-width: 62ch;
}

.page-about .about-position__lede {
  margin: 0;
  font-size: 1rem;
  line-height: 1.88;
  color: rgba(255, 255, 255, .78);
}

.page-about .about-position__grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(24px, 3.4vw, 38px);
}

.page-about .about-card {
  padding: 22px 20px 24px;
  border: 1px solid rgba(0, 229, 255, .18);
  border-radius: var(--hth-radius-lg);
  background: rgba(255, 255, 255, .055);
  transition: transform .26s ease, background .26s ease, border-color .26s ease;
}

.page-about .about-card:hover {
  transform: translateY(-4px);
  background: rgba(0, 229, 255, .1);
  border-color: rgba(0, 229, 255, .38);
}

.page-about .about-card__num {
  margin: 0 0 12px;
  font-family: var(--hth-font-mono);
  font-size: .84rem;
  letter-spacing: .14em;
  color: var(--hth-cyan);
}

.page-about .about-card h3 {
  margin: 0 0 10px;
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--hth-white);
}

.page-about .about-card p:last-child {
  margin: 0;
  font-size: .9rem;
  line-height: 1.82;
  color: rgba(255, 255, 255, .76);
}

/* ---------- 时间线 ---------- */
.page-about .about-history {
  background: var(--hth-cream);
}

.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 19px;
  width: 2px;
  background: linear-gradient(180deg, var(--hth-gold), var(--hth-cyan) 52%, rgba(138, 155, 181, .3));
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 clamp(18px, 2.8vw, 30px) 58px;
}

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

.page-about .about-timeline__marker {
  position: absolute;
  left: 0;
  top: 8px;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 2px solid rgba(242, 193, 78, .5);
  border-radius: 50%;
  background: var(--hth-navy);
  color: var(--hth-gold);
  font-family: var(--hth-font-mono);
  font-size: .74rem;
  letter-spacing: .04em;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}

.page-about .about-timeline__item:hover .about-timeline__marker {
  transform: rotate(8deg) scale(1.06);
  border-color: var(--hth-cyan);
  box-shadow: 0 0 0 7px rgba(0, 229, 255, .12);
}

.page-about .about-timeline__panel {
  padding: 18px 20px 20px;
  border: 1px solid var(--about-cream-line);
  border-radius: var(--hth-radius-lg);
  background: var(--hth-white);
  box-shadow: var(--hth-shadow-soft);
  transition: transform .26s ease, box-shadow .26s ease;
}

.page-about .about-timeline__item:hover .about-timeline__panel {
  transform: translateY(-3px);
  box-shadow: 0 24px 46px -26px rgba(10, 26, 58, .5);
}

.page-about .about-timeline__phase {
  margin: 0 0 8px;
  font-family: var(--hth-font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--hth-cyan-ink);
}

.page-about .about-timeline__panel h3 {
  margin: 0 0 10px;
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--hth-navy);
  line-height: 1.42;
}

.page-about .about-timeline__panel p:last-child {
  margin: 0;
  font-size: .9rem;
  line-height: 1.84;
  color: rgba(27, 18, 12, .72);
}

.page-about .about-timeline__item--current .about-timeline__panel {
  background: linear-gradient(150deg, var(--hth-navy), var(--hth-midnight));
  border-color: transparent;
  box-shadow: 0 28px 56px -28px rgba(10, 26, 58, .68);
}

.page-about .about-timeline__item--current .about-timeline__phase {
  color: var(--hth-lime);
}

.page-about .about-timeline__item--current .about-timeline__panel h3 {
  color: var(--hth-white);
}

.page-about .about-timeline__item--current .about-timeline__panel p:last-child {
  color: rgba(255, 255, 255, .78);
}

.page-about .about-timeline__item--current .about-timeline__marker {
  background: var(--hth-gold);
  border-color: var(--hth-gold);
  color: var(--hth-navy);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background:
    radial-gradient(70% 110% at 10% 0%, rgba(0, 229, 255, .15), transparent 60%),
    radial-gradient(60% 90% at 100% 100%, rgba(242, 193, 78, .12), transparent 62%),
    var(--hth-navy);
  color: var(--hth-white);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(24px, 4vw, 50px);
  align-items: center;
}

.page-about .about-team__figure {
  margin: 0;
  min-width: 0;
  border-radius: var(--hth-radius-lg);
  overflow: hidden;
  background: var(--hth-midnight);
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-team__lede {
  margin: 0;
  max-width: 58ch;
  font-size: .98rem;
  line-height: 1.88;
  color: rgba(255, 255, 255, .78);
}

.page-about .about-team__list {
  display: grid;
  gap: 12px;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-team__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 15px 18px;
  border-left: 3px solid var(--hth-cyan);
  border-radius: var(--hth-radius-md);
  background: rgba(255, 255, 255, .05);
}

.page-about .about-team__count {
  font-family: var(--hth-font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--hth-lime);
}

.page-about .about-team__list h3 {
  margin: 0 0 6px;
  font-size: .96rem;
  font-weight: 700;
  color: var(--hth-white);
}

.page-about .about-team__list p {
  margin: 0;
  font-size: .87rem;
  line-height: 1.78;
  color: rgba(255, 255, 255, .72);
}

/* ---------- 合作与荣誉 ---------- */
.page-about .about-partners {
  background: var(--hth-white);
}

.page-about .about-partners__grid {
  display: grid;
  gap: clamp(24px, 3.6vw, 44px);
  align-items: start;
}

.page-about .about-partners__panel {
  padding: clamp(22px, 3.2vw, 34px);
  border: 1px solid var(--about-cream-line);
  border-radius: var(--hth-radius-lg);
  background: var(--hth-cream);
}

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

.page-about .about-partners__list li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px dashed rgba(27, 18, 12, .16);
}

.page-about .about-partners__list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .about-partners__num {
  font-family: var(--hth-font-mono);
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1;
  color: var(--hth-navy);
}

.page-about .about-partners__label {
  font-size: .92rem;
  color: rgba(27, 18, 12, .74);
}

.page-about .about-partners__note {
  margin: 18px 0 0;
  font-size: .88rem;
  line-height: 1.82;
  color: rgba(27, 18, 12, .68);
}

.page-about .about-badges {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-badge {
  padding: 20px 14px 22px;
  border: 1px solid var(--about-cream-line);
  border-radius: var(--hth-radius-lg);
  background: var(--hth-cream);
  text-align: center;
  transition: transform .28s ease, border-color .28s ease;
}

.page-about .about-badge:hover {
  transform: translateY(-4px);
  border-color: rgba(242, 193, 78, .7);
}

.page-about .about-badge__svg {
  display: block;
  width: 70px;
  height: 70px;
  margin: 0 auto 12px;
  transition: transform .4s cubic-bezier(.22, .75, .3, 1);
}

.page-about .about-badge:hover .about-badge__svg {
  transform: rotate(8deg) scale(1.05);
}

.page-about .about-badge__no {
  margin: 0 0 6px;
  font-family: var(--hth-font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--hth-cyan-ink);
}

.page-about .about-badge__txt {
  margin: 0;
  font-size: .84rem;
  line-height: 1.7;
  color: rgba(27, 18, 12, .74);
}

/* ---------- 使用场景 ---------- */
.page-about .about-scenarios {
  background: var(--hth-cream);
}

.page-about .about-scenarios__grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 42px);
  align-items: start;
}

.page-about .about-scenarios__figure {
  margin: 0;
  min-width: 0;
  border-radius: var(--hth-radius-lg);
  overflow: hidden;
  background: var(--hth-navy);
}

.page-about .about-scenarios__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

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

.page-about .about-scenarios__list li {
  padding: 16px 18px;
  border-radius: var(--hth-radius-md);
  background: var(--hth-white);
  border: 1px solid var(--about-cream-line);
  border-left: 3px solid var(--hth-gold);
  transition: border-left-color .24s ease, transform .24s ease;
}

.page-about .about-scenarios__list li:hover {
  border-left-color: var(--hth-cyan);
  transform: translateX(4px);
}

.page-about .about-scenarios__tag {
  margin: 0 0 7px;
  font-family: var(--hth-font-mono);
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--hth-navy);
}

.page-about .about-scenarios__txt {
  margin: 0;
  font-size: .89rem;
  line-height: 1.82;
  color: rgba(27, 18, 12, .74);
}

/* ---------- 视觉与气场 ---------- */
.page-about .about-visual {
  background: var(--hth-navy);
  color: var(--hth-white);
}

.page-about .about-visual__panel {
  display: grid;
  gap: clamp(24px, 3.6vw, 46px);
  align-items: center;
}

.page-about .about-visual__text p {
  margin: 0 0 14px;
  max-width: 56ch;
  font-size: .96rem;
  line-height: 1.88;
  color: rgba(255, 255, 255, .78);
}

.page-about .about-visual__text p:last-child {
  margin-bottom: 0;
}

.page-about .about-visual__court {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--about-radius);
  overflow: hidden;
  background:
    radial-gradient(58% 52% at 22% 16%, rgba(0, 229, 255, .34), transparent 62%),
    radial-gradient(54% 58% at 82% 26%, rgba(242, 193, 78, .26), transparent 60%),
    repeating-linear-gradient(100deg, rgba(255, 255, 255, .05) 0 20px, transparent 20px 42px),
    linear-gradient(168deg, #0e2549, #050f24);
  border: 1px solid rgba(0, 229, 255, .2);
}

.page-about .about-visual__glow {
  position: absolute;
  left: 8%;
  top: 6%;
  width: 46%;
  height: 34%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 255, .5), transparent 68%);
  filter: blur(6px);
}

.page-about .about-visual__arc {
  position: absolute;
  left: 50%;
  bottom: -34%;
  width: 76%;
  aspect-ratio: 1 / 1;
  transform: translateX(-50%);
  border: 2px dashed rgba(166, 255, 61, .5);
  border-radius: 50%;
}

.page-about .about-visual__stripe {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 34%;
  background:
    repeating-linear-gradient(90deg, rgba(255, 255, 255, .12) 0 3px, transparent 3px 26px),
    linear-gradient(180deg, transparent, rgba(0, 229, 255, .16));
}

/* ---------- 结尾引导 ---------- */
.page-about .about-cta {
  padding-top: clamp(34px, 5vw, 62px);
}

.page-about .about-cta__panel {
  display: grid;
  gap: clamp(18px, 2.6vw, 32px);
  padding: clamp(26px, 4.2vw, 52px);
  border-radius: var(--about-radius);
  background:
    radial-gradient(80% 120% at 0% 0%, rgba(0, 229, 255, .16), transparent 60%),
    linear-gradient(140deg, var(--hth-white), var(--hth-cream));
  border: 1px solid var(--about-cream-line);
  box-shadow: var(--hth-shadow-soft);
}

.page-about .about-cta__text p {
  margin: 0;
  max-width: 64ch;
  font-size: .96rem;
  line-height: 1.86;
  color: rgba(27, 18, 12, .74);
}

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

/* ---------- 渐显 ---------- */
.page-about [data-reveal].is-visible {
  animation: about-reveal .55s cubic-bezier(.22, .75, .3, 1) both;
}

@keyframes about-reveal {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-position__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-timeline__item {
    padding-left: 74px;
  }

  .page-about .about-timeline::before {
    left: 22px;
  }

  .page-about .about-timeline__marker {
    width: 46px;
    height: 46px;
    font-size: .8rem;
  }

  .page-about .about-timeline__panel {
    padding: 22px 26px 24px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 5.2fr) minmax(0, 5.8fr);
    gap: clamp(30px, 4vw, 56px);
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  }

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }

  .page-about .about-scenarios__grid {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
  }

  .page-about .about-visual__panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, .9fr);
  }

  .page-about .about-cta__panel {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-about .about-hero__grid {
    grid-template-columns: 30px minmax(0, 5fr) minmax(0, 5.6fr);
  }

  .page-about .about-hero__annot {
    display: block;
    writing-mode: vertical-rl;
    margin: 0;
    font-family: var(--hth-font-mono);
    font-size: .68rem;
    letter-spacing: .3em;
    color: var(--hth-steel);
  }

  .page-about .about-hero__figures dd {
    font-size: 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal].is-visible {
    animation: none;
  }

  .page-about .about-card,
  .page-about .about-badge,
  .page-about .about-badge__svg,
  .page-about .about-timeline__marker,
  .page-about .about-timeline__panel,
  .page-about .about-scenarios__list li {
    transition: none;
  }
}