.page-about {
  --about-tilt: -1.2deg;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 26px 0 60px;
  background:
    radial-gradient(90% 70% at 100% 0%, rgba(45, 156, 219, .16), transparent 58%),
    radial-gradient(80% 60% at 0% 100%, rgba(200, 16, 46, .2), transparent 62%),
    var(--ink);
  color: var(--paper);
  overflow: hidden;
}

.page-about .about-hero .crumbs {
  color: var(--grey);
}

.page-about .about-hero .crumbs a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 237, 228, .28);
}

.page-about .about-hero .crumbs a:hover,
.page-about .about-hero .crumbs a:focus-visible {
  color: var(--red-bright);
  border-bottom-color: var(--red-bright);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 32px;
  align-items: center;
  margin-top: 24px;
}

.page-about .about-hero__eyebrow {
  color: var(--amber);
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 7.4vw, 4.1rem);
  line-height: 1.1;
  letter-spacing: -.005em;
  margin: 14px 0 18px;
  color: var(--paper-2);
}

.page-about .about-hero__intro {
  max-width: 34em;
  color: rgba(242, 237, 228, .78);
  margin: 0 0 26px;
}

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

/* 首屏视觉：灯带 + 数据节点 */
.page-about .about-hero__visual {
  position: relative;
  min-height: 230px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-dark);
  background: linear-gradient(158deg, var(--ink-2), var(--ink) 72%);
  overflow: hidden;
  transform: rotate(var(--about-tilt));
  box-shadow: var(--shadow-2);
}

.page-about .about-hero__glow {
  position: absolute;
  inset: -30% -10% 40% 30%;
  background: radial-gradient(60% 60% at 50% 50%, rgba(200, 16, 46, .55), transparent 68%);
  filter: blur(6px);
}

.page-about .about-hero__lines {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(90deg, rgba(242, 237, 228, .07) 0 1px, transparent 1px 42px),
    repeating-linear-gradient(0deg, rgba(242, 237, 228, .045) 0 1px, transparent 1px 42px);
  transform: skewY(-4deg) scale(1.1);
  transform-origin: left center;
}

.page-about .about-hero__node {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 0 rgba(74, 222, 128, .55);
  animation: about-pulse 2.6s ease-out infinite;
}

.page-about .about-hero__node--1 {
  top: 26%;
  left: 22%;
}

.page-about .about-hero__node--2 {
  top: 58%;
  left: 54%;
  background: var(--blue);
  box-shadow: 0 0 0 0 rgba(45, 156, 219, .55);
  animation-delay: .9s;
}

.page-about .about-hero__node--3 {
  top: 40%;
  left: 80%;
  background: var(--red-bright);
  box-shadow: 0 0 0 0 rgba(230, 57, 70, .5);
  animation-delay: 1.7s;
}

.page-about .about-hero__stamp {
  position: absolute;
  right: 18px;
  bottom: 16px;
  font-size: .78rem;
  letter-spacing: .14em;
  color: var(--amber);
  border-top: 1px solid rgba(242, 183, 5, .4);
  padding-top: 6px;
}

@keyframes about-pulse {
  0% { box-shadow: 0 0 0 0 currentColor; opacity: 1; }
  70% { box-shadow: 0 0 0 14px transparent; opacity: .8; }
  100% { box-shadow: 0 0 0 0 transparent; opacity: 1; }
}

/* 首屏数字条 */
.page-about .about-hero__stats {
  list-style: none;
  margin: 40px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line-dark);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 16px;
}

.page-about .about-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-about .about-stat__num {
  font-size: clamp(1.35rem, 4.4vw, 1.85rem);
  font-weight: 600;
  color: var(--paper-2);
  letter-spacing: -.01em;
}

.page-about .about-stat__label {
  font-size: .84rem;
  color: var(--grey);
}

/* ---------- 通用标题组 ---------- */
.page-about .about-story h2,
.page-about .about-team h2,
.page-about .about-history h2,
.page-about .about-eco h2,
.page-about .about-principles h2,
.page-about .about-cta h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 5vw, 2.6rem);
  line-height: 1.16;
  margin: 10px 0 14px;
}

/* ---------- 品牌故事 ---------- */
.page-about .about-story__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-story__body p {
  max-width: 36em;
}

.page-about .about-story__media,
.page-about .about-team__media {
  margin: 0;
}

.page-about .about-quote {
  margin: 26px 0 0;
  padding: 20px 22px;
  background: var(--paper-2);
  border-left: 6px solid var(--red);
  border-radius: var(--r-sm);
  box-shadow: var(--shadow-1);
}

.page-about .about-quote__text {
  margin: 0;
  font-size: 1.06rem;
  line-height: 1.7;
  color: var(--ink);
}

/* ---------- 团队 ---------- */
.page-about .about-team__lead {
  max-width: 40em;
  color: rgba(242, 237, 228, .76);
}

.page-about .about-team__grid {
  margin-top: 30px;
  align-items: start;
}

.page-about .about-team__roles {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-role {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num name"
    "num desc";
  gap: 2px 16px;
  padding: 14px 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--line-dark);
  background: linear-gradient(140deg, rgba(31, 37, 46, .9), rgba(11, 13, 16, .6));
}

.page-about .about-role__num {
  grid-area: num;
  align-self: center;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--amber);
}

.page-about .about-role__name {
  grid-area: name;
  font-weight: 600;
  color: var(--paper-2);
}

.page-about .about-role__desc {
  grid-area: desc;
  font-size: .88rem;
  color: var(--grey);
  line-height: 1.6;
}

.page-about .about-team__note {
  max-width: 36em;
  padding-left: 18px;
  border-left: 3px solid var(--blue);
  color: rgba(242, 237, 228, .72);
  font-size: .94rem;
}

/* ---------- 历程 ---------- */
.page-about .about-history__lead {
  max-width: 42em;
}

.page-about .about-history__media {
  margin: 28px 0 32px;
}

.page-about .about-timeline .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.page-about .about-timeline .tabs__tab {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .04em;
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid var(--line-light);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}

.page-about .about-timeline .tabs__tab:hover {
  border-color: var(--red);
  color: var(--red);
}

.page-about .about-timeline .tabs__tab[aria-selected="true"] {
  background: var(--red);
  border-color: var(--red);
  color: var(--paper-2);
}

.page-about .about-timeline .tabs__tab:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

.page-about .about-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-timeline__entry {
  position: relative;
  padding: 2px 0 26px 30px;
  border-left: 2px solid var(--line-light);
}

.page-about .about-timeline__entry::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 4px rgba(200, 16, 46, .14);
}

.page-about .about-timeline__entry:last-child {
  border-left-color: transparent;
  padding-bottom: 6px;
}

.page-about .about-timeline__ver {
  display: inline-block;
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--paper-2);
  background: var(--ink);
  border-radius: 999px;
  padding: 3px 12px;
  margin-bottom: 8px;
}

.page-about .about-timeline__title {
  font-size: 1.06rem;
  font-weight: 600;
  margin: 0 0 6px;
  color: var(--ink);
}

.page-about .about-timeline__desc {
  margin: 0;
  max-width: 40em;
  font-size: .94rem;
  color: rgba(11, 13, 16, .72);
}

/* ---------- 生态与荣誉 ---------- */
.page-about .about-eco__lead {
  max-width: 42em;
  color: rgba(242, 237, 228, .76);
}

.page-about .about-eco__track {
  list-style: none;
  margin: 30px 0 0;
  padding: 4px 0 16px;
  display: flex;
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-eco__track:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 4px;
}

.page-about .about-eco__card {
  flex: 0 0 78%;
  scroll-snap-align: start;
  padding: 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--line-dark);
  background: linear-gradient(150deg, rgba(31, 37, 46, .95), rgba(11, 13, 16, .72));
  transform: rotate(calc(var(--about-tilt) * .5));
  transition: transform .28s ease, border-color .28s ease;
}

.page-about .about-eco__card:hover {
  transform: rotate(0deg) translateY(-4px);
  border-color: rgba(45, 156, 219, .5);
}

.page-about .about-eco__num {
  display: block;
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--blue);
  margin-bottom: 8px;
}

.page-about .about-eco__name {
  font-size: 1.02rem;
  margin: 0 0 8px;
  color: var(--paper-2);
}

.page-about .about-eco__desc {
  margin: 0;
  font-size: .88rem;
  line-height: 1.68;
  color: var(--grey);
}

.page-about .about-honors {
  margin-top: 40px;
  padding-top: 26px;
  border-top: 1px solid var(--line-dark);
}

.page-about .about-honors__title {
  color: var(--amber);
  margin: 0 0 16px;
}

.page-about .about-honor-strip {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-honor {
  flex: 1 1 240px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line-dark);
  background: rgba(250, 247, 240, .05);
  transition: border-color .24s ease, background-color .24s ease;
}

.page-about .about-honor:hover,
.page-about .about-honor:focus-within {
  border-color: rgba(242, 183, 5, .6);
  background: rgba(250, 247, 240, .09);
}

.page-about .about-honor__year {
  font-size: .76rem;
  letter-spacing: .12em;
  color: var(--amber);
}

.page-about .about-honor__name {
  font-weight: 600;
  color: var(--paper-2);
  line-height: 1.5;
}

.page-about .about-honor__note {
  font-size: .84rem;
  line-height: 1.62;
  color: var(--grey);
  transition: color .24s ease;
}

.page-about .about-honor:hover .about-honor__note,
.page-about .about-honor:focus-within .about-honor__note {
  color: rgba(242, 237, 228, .9);
}

/* ---------- 原则 ---------- */
.page-about .about-principles__lead {
  max-width: 42em;
  color: rgba(11, 13, 16, .72);
}

.page-about .about-principles__grid {
  margin-top: 30px;
  display: grid;
  gap: 16px;
}

.page-about .about-principle {
  position: relative;
  padding: 24px 22px 22px;
  border-radius: var(--r-md);
  background: var(--paper-2);
  border: 1px solid var(--line-light);
  overflow: hidden;
}

.page-about .about-principle::after {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(45, 156, 219, .14), transparent 70%);
}

.page-about .about-principle__idx {
  display: inline-block;
  font-size: .76rem;
  letter-spacing: .16em;
  color: var(--red);
  border: 1px solid rgba(200, 16, 46, .3);
  border-radius: 4px;
  padding: 2px 8px;
  margin-bottom: 12px;
}

.page-about .about-principle__title {
  font-size: 1.14rem;
  margin: 0 0 8px;
  color: var(--ink);
}

.page-about .about-principle__desc {
  margin: 0;
  font-size: .92rem;
  line-height: 1.72;
  color: rgba(11, 13, 16, .74);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  background:
    radial-gradient(70% 100% at 100% 0%, rgba(200, 16, 46, .28), transparent 62%),
    var(--ink);
  color: var(--paper);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 22px;
  align-items: center;
}

.page-about .about-cta h2 {
  color: var(--paper-2);
  margin-bottom: 10px;
}

.page-about .about-cta__text p {
  margin: 0;
  max-width: 36em;
  color: rgba(242, 237, 228, .76);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px 24px;
  }

  .page-about .about-principles__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-eco__card {
    flex: 0 0 320px;
  }

  .page-about .about-cta__inner {
    grid-template-columns: 1.4fr auto;
    justify-content: space-between;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 34px 0 78px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1.05fr .95fr;
    gap: 54px;
    margin-top: 38px;
  }

  .page-about .about-hero__visual {
    min-height: 360px;
  }

  .page-about .about-hero__stats {
    margin-top: 52px;
  }

  .page-about .about-story__grid {
    grid-template-columns: .92fr 1.08fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .about-story__media {
    margin-top: 26px;
  }

  .page-about .about-team__grid {
    grid-template-columns: 1.08fr .92fr;
    gap: 46px;
  }

  .page-about .about-principles__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-history__media {
    margin: 34px 0 40px;
  }
}

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

  .page-about .about-eco__card,
  .page-about .about-honor,
  .page-about .about-honor__note,
  .page-about .about-timeline .tabs__tab {
    transition: none;
  }

  .page-about .about-eco__card:hover {
    transform: rotate(calc(var(--about-tilt) * .5));
  }
}