.page-about {
  --about-gold-line: linear-gradient(90deg, var(--hf-gold), var(--hf-neon));
  --about-gold-soft: rgba(212, 175, 55, 0.14);
  --about-rule: rgba(11, 61, 46, 0.12);
  background: var(--hf-white);
  color: var(--hf-gray-dark);
  overflow-x: hidden;
}

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

.page-about a:focus-visible,
.page-about button:focus-visible {
  outline: 2px solid var(--hf-gold);
  outline-offset: 2px;
}

/* ===== Hero ===== */
.page-about .about-hero {
  background: linear-gradient(140deg, var(--hf-green) 0%, var(--hf-green-dark) 100%);
  color: var(--hf-white);
  position: relative;
  overflow: hidden;
  padding: 64px 0 72px;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -90px;
  bottom: -90px;
  width: 260px;
  height: 260px;
  border: 1px solid rgba(212, 175, 55, 0.32);
  border-radius: 50%;
  box-shadow: 0 0 0 24px rgba(212, 175, 55, 0.06), 0 0 0 48px rgba(212, 175, 55, 0.03);
  pointer-events: none;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 44px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.page-about .about-hero__kicker {
  font-family: var(--hf-font-heading);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  font-size: 0.82rem;
  color: var(--hf-gold);
  margin: 0;
}

.page-about .about-hero h1 {
  font-family: var(--hf-font-heading);
  font-size: clamp(2.4rem, 8vw, 4.2rem);
  line-height: 1.05;
  color: var(--hf-white);
  margin: 14px 0 20px;
  letter-spacing: 0.01em;
}

.page-about .about-hero__lead {
  color: var(--hf-light);
  font-size: 1.06rem;
  line-height: 1.8;
  max-width: 640px;
  margin: 0;
}

.page-about .about-hero__meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin: 26px 0 0;
  padding: 0;
}

.page-about .about-hero__meta li {
  font-family: var(--hf-font-heading);
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--hf-light);
  border-left: 3px solid var(--hf-gold);
  padding-left: 10px;
}

.page-about .about-hero__visual svg {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid rgba(212, 175, 55, 0.28);
  border-radius: 8px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.25);
}

.page-about .about-hero__line {
  height: 3px;
  background: var(--about-gold-line);
  opacity: 0.85;
  margin-top: 64px;
}

/* ===== 为什么叫主场 ===== */
.page-about .about-why {
  background: var(--hf-white);
  padding: 72px 0;
}

.page-about .about-why__statement {
  font-family: var(--hf-font-heading);
  font-size: clamp(1.3rem, 3vw, 2rem);
  color: var(--hf-green);
  border-left: 4px solid var(--hf-gold);
  padding: 12px 0 12px 28px;
  margin: 36px 0 36px;
  max-width: 960px;
  background: linear-gradient(90deg, var(--about-gold-soft), transparent 78%);
}

.page-about .about-why__statement p {
  margin: 0;
  line-height: 1.4;
}

.page-about .about-why__grid {
  display: grid;
  gap: 36px;
}

.page-about .about-why__text p {
  margin-bottom: 1.1em;
  line-height: 1.85;
  color: var(--hf-gray-dark);
}

.page-about .about-why__principles {
  display: grid;
  gap: 20px;
}

.page-about .about-why__principle {
  position: relative;
  padding: 28px 24px 24px 28px;
  background: var(--hf-light);
  border: 1px solid var(--about-rule);
  border-radius: 4px;
  overflow: hidden;
}

.page-about .about-why__principle::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, transparent 50%, var(--hf-gold) 50%);
  opacity: 0.5;
}

.page-about .about-why__principle-num {
  position: absolute;
  top: 16px;
  right: 18px;
  font-family: var(--hf-font-heading);
  font-size: 3rem;
  line-height: 1;
  color: rgba(11, 61, 46, 0.1);
}

.page-about .about-why__principle h3 {
  font-family: var(--hf-font-heading);
  font-size: 1.5rem;
  color: var(--hf-green);
  margin: 0 0 8px;
}

.page-about .about-why__principle p {
  margin: 0;
  color: var(--hf-gray-mid);
  line-height: 1.75;
}

/* ===== 从新疆出发 ===== */
.page-about .about-origin {
  background: var(--hf-green-dark);
  color: var(--hf-light);
  position: relative;
  overflow: hidden;
  padding: 72px 0;
}

.page-about .about-origin__topo {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-about .about-origin__topo svg {
  width: 100%;
  height: 100%;
}

.page-about .about-origin .hf-container {
  position: relative;
  z-index: 1;
}

.page-about .about-origin .hf-section-title,
.page-about .about-honors .hf-section-title {
  color: var(--hf-white);
}

.page-about .about-origin .hf-section-sub,
.page-about .about-honors .hf-section-sub {
  color: rgba(232, 240, 236, 0.72);
}

.page-about .about-origin .hf-section-index,
.page-about .about-honors .hf-section-index {
  color: rgba(212, 175, 55, 0.4);
}

.page-about .about-origin__grid {
  display: grid;
  gap: 40px;
  align-items: center;
}

.page-about .about-origin__content p {
  color: rgba(232, 240, 236, 0.9);
  line-height: 1.85;
  margin-bottom: 1em;
  max-width: 62ch;
}

.page-about .about-origin__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 30px;
}

.page-about .about-origin__stat {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: 4px;
  padding: 16px;
}

.page-about .about-origin__stat dt {
  font-family: var(--hf-font-heading);
  font-size: 0.78rem;
  color: var(--hf-gold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.page-about .about-origin__stat dd {
  margin: 8px 0 0;
  font-family: var(--hf-font-heading);
  font-size: 2.2rem;
  color: var(--hf-white);
  line-height: 1;
}

.page-about .about-origin__figure {
  margin: 0;
  position: relative;
}

.page-about .about-origin__img-wrap {
  position: relative;
  padding: 12px 12px 20px;
  background: var(--hf-green);
  border: 1px solid rgba(212, 175, 55, 0.35);
  border-radius: 6px;
}

.page-about .about-origin__img-wrap::after {
  content: "";
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, transparent 50%, var(--hf-gold) 50%);
  opacity: 0.65;
}

.page-about .about-origin__img-wrap img {
  width: 100%;
  height: auto;
  display: block;
  clip-path: polygon(0 0, 100% 5%, 94% 100%, 0 94%);
}

.page-about .about-origin__figure figcaption {
  margin-top: 12px;
  font-size: 0.9rem;
  color: rgba(232, 240, 236, 0.7);
}

/* ===== 技术演进时间轴 ===== */
.page-about .about-timeline {
  background: #f7faf8;
  padding: 72px 0;
}

.page-about .about-timeline__layout {
  display: grid;
  gap: 32px;
}

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

.page-about .about-timeline__list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 34px;
  margin-bottom: 18px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 30px;
  bottom: -20px;
  width: 2px;
  background: linear-gradient(180deg, var(--hf-gold), var(--hf-gold-light) 70%, transparent 100%);
}

.page-about .about-timeline__item:last-child::before {
  display: none;
}

.page-about .about-timeline__node {
  position: absolute;
  left: 9px;
  top: 30px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--hf-green);
  border: 3px solid var(--hf-gold);
  transform: translateX(-50%);
  z-index: 1;
}

.page-about .about-timeline__head {
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-timeline__season {
  background: var(--hf-green);
  color: var(--hf-white);
  font-family: var(--hf-font-heading);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.8rem;
  padding: 6px 10px;
  border-left: 3px solid var(--hf-gold);
  align-self: center;
}

.page-about .about-timeline__trigger {
  flex: 1;
  min-width: 220px;
  background: var(--hf-white);
  color: var(--hf-gray-dark);
  border: 1px solid var(--about-rule);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  text-align: left;
  cursor: pointer;
  border-radius: 4px;
  transition: border-color 0.25s, background 0.25s, transform 0.25s;
}

.page-about .about-timeline__trigger:hover {
  border-color: var(--hf-gold);
  background: rgba(212, 175, 55, 0.08);
  transform: translateY(-1px);
}

.page-about .about-timeline__title {
  font-family: var(--hf-font-heading);
  font-size: 1.15rem;
  line-height: 1.2;
  color: var(--hf-green);
}

.page-about .about-timeline__toggle {
  font-family: var(--hf-font-heading);
  color: var(--hf-gold);
  font-size: 1.4rem;
  line-height: 1;
}

.page-about .about-timeline__content {
  background: var(--hf-white);
  border: 1px solid var(--about-rule);
  border-top: none;
  padding: 16px 18px;
  border-radius: 0 4px 4px 4px;
}

.page-about .about-timeline__content p {
  margin: 0;
  line-height: 1.8;
  color: var(--hf-gray-mid);
}

/* ===== 团队与组织 ===== */
.page-about .about-team {
  background: var(--hf-white);
  padding: 72px 0;
  overflow: hidden;
}

.page-about .about-team__root {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin: 30px 0 40px;
  background: var(--hf-light);
  border: 1px solid var(--about-rule);
  padding: 24px;
  border-radius: 6px;
}

.page-about .about-team__root-label {
  font-family: var(--hf-font-heading);
  letter-spacing: 0.2em;
  color: var(--hf-gold);
  text-transform: uppercase;
  font-size: 0.85rem;
}

.page-about .about-team__root-copy p {
  max-width: 560px;
  line-height: 1.8;
  color: var(--hf-gray-dark);
  margin: 10px 0 0;
}

.page-about .about-team__figure {
  margin: 0;
  border: 1px solid rgba(212, 175, 55, 0.4);
  padding: 8px;
  border-radius: 4px;
}

.page-about .about-team__figure img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 2px;
}

.page-about .about-team__branches {
  display: grid;
  gap: 22px;
}

.page-about .about-team__branch {
  background: var(--hf-white);
  border: 1px solid var(--about-rule);
  border-left: 4px solid var(--hf-gold);
  padding: 24px;
  border-radius: 4px;
  box-shadow: 0 8px 24px rgba(11, 61, 46, 0.05);
  transition: transform 0.3s, box-shadow 0.3s;
}

.page-about .about-team__branch:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(11, 61, 46, 0.09);
}

.page-about .about-team__branch-num {
  font-family: var(--hf-font-heading);
  font-size: 2.2rem;
  line-height: 1;
  color: rgba(11, 61, 46, 0.12);
  display: block;
  margin-bottom: 10px;
}

.page-about .about-team__branch h3 {
  margin: 0 0 8px;
  font-family: var(--hf-font-heading);
  font-size: 1.4rem;
  color: var(--hf-green);
}

.page-about .about-team__branch p {
  margin: 0;
  color: var(--hf-gray-mid);
  line-height: 1.75;
}

/* ===== 荣誉与认可 ===== */
.page-about .about-honors {
  background: linear-gradient(150deg, var(--hf-green) 0%, var(--hf-green-dark) 100%);
  color: var(--hf-white);
  padding: 72px 0;
  position: relative;
}

.page-about .about-honors__grid {
  display: grid;
  gap: 22px;
  margin-top: 30px;
}

.page-about .about-honors__card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(212, 175, 55, 0.22);
  border-radius: 6px;
  transition: background 0.3s, border-color 0.3s, transform 0.3s;
}

.page-about .about-honors__card:hover,
.page-about .about-honors__card:focus-visible {
  background: rgba(212, 175, 55, 0.1);
  border-color: var(--hf-gold);
  transform: translateY(-4px);
}

.page-about .about-honors__card-inner {
  padding: 22px;
}

.page-about .about-honors__num {
  font-family: var(--hf-font-heading);
  font-size: 2.6rem;
  line-height: 1;
  color: rgba(212, 175, 55, 0.4);
  display: block;
  margin-bottom: 12px;
}

.page-about .about-honors__card h3 {
  margin: 0 0 8px;
  font-family: var(--hf-font-heading);
  font-size: 1.35rem;
  color: var(--hf-white);
}

.page-about .about-honors__summary {
  font-size: 0.9rem;
  color: var(--hf-gold);
  margin: 0 0 10px;
}

.page-about .about-honors__detail p {
  margin: 0;
  color: rgba(232, 240, 236, 0.8);
  line-height: 1.75;
  font-size: 0.98rem;
}

@media (hover: hover) {
  .page-about .about-honors__detail {
    display: none;
  }

  .page-about .about-honors__card:hover .about-honors__detail,
  .page-about .about-honors__card:focus-visible .about-honors__detail,
  .page-about .about-honors__card:focus-within .about-honors__detail {
    display: block;
  }
}

/* ===== 收尾 CTA ===== */
.page-about .about-cta {
  background: linear-gradient(135deg, var(--hf-green), var(--hf-green-dark));
  color: var(--hf-white);
  padding: 62px 0;
  text-align: center;
  border-top: 3px solid var(--hf-gold);
}

.page-about .about-cta h2 {
  font-family: var(--hf-font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  margin: 0 0 16px;
  color: var(--hf-white);
}

.page-about .about-cta p {
  max-width: 640px;
  margin: 0 auto;
  color: rgba(232, 240, 236, 0.85);
  line-height: 1.8;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  margin-top: 28px;
}

/* ===== 平板与桌面 ===== */
@media (min-width: 640px) {
  .page-about .about-why__principles {
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 96px 0;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
  }

  .page-about .about-hero__line {
    margin-top: 96px;
  }

  .page-about .about-why {
    padding: 96px 0;
  }

  .page-about .about-why__grid {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }

  .page-about .about-origin {
    padding: 96px 0;
  }

  .page-about .about-origin__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 56px;
  }

  .page-about .about-timeline {
    padding: 96px 0;
  }

  .page-about .about-timeline__layout {
    grid-template-columns: 280px 1fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .about-timeline__aside {
    display: block;
    position: sticky;
    top: 30px;
  }

  .page-about .about-timeline__aside img {
    width: 100%;
    height: auto;
    object-fit: cover;
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 4px;
  }

  .page-about .about-team {
    padding: 96px 0;
  }

  .page-about .about-team__root {
    flex-direction: row;
    align-items: center;
    gap: 32px;
  }

  .page-about .about-team__figure {
    flex: 0 0 300px;
  }

  .page-about .about-team__branches {
    gap: 18px;
  }

  .page-about .about-team__branch--2 {
    margin-left: 7%;
  }

  .page-about .about-team__branch--3 {
    margin-left: 14%;
  }

  .page-about .about-team__branch--4 {
    margin-left: 21%;
  }

  .page-about .about-team__branch--5 {
    margin-left: 28%;
  }

  .page-about .about-honors {
    padding: 96px 0;
  }

  .page-about .about-honors__grid {
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
  }

  .page-about .about-honors__card {
    grid-column: span 2;
  }

  .page-about .about-honors__card:nth-child(4) {
    grid-column: 2 / span 2;
  }

  .page-about .about-honors__card:nth-child(5) {
    grid-column: 4 / span 2;
  }

  .page-about .about-cta {
    padding: 84px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition: none !important;
    animation: none !important;
  }

  .page-about .about-hero__visual svg {
    transform: none;
  }
}