.page-about {
  --about-hero-minh: 76vh;
  --about-card-hover: #1f3d30;
}

/* ===== HERO ===== */
.page-about .about-hero {
  position: relative;
  min-height: var(--about-hero-minh);
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-primary);
}

.page-about .about-hero__media {
  position: absolute;
  inset: 0;
  margin: 0;
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  -webkit-clip-path: polygon(0 0, 100% 0, 84% 100%, 0 100%);
  clip-path: polygon(0 0, 100% 0, 84% 100%, 0 100%);
}

.page-about .about-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(108deg, rgba(10, 92, 42, 0.94) 0%, rgba(13, 27, 20, 0.78) 56%, rgba(212, 175, 55, 0.24) 100%);
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 780px;
  margin: 0 auto;
  padding: 56px var(--gutter) 104px;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 28px;
  color: rgba(232, 236, 233, 0.78);
}

.page-about .about-hero .breadcrumb a {
  color: var(--color-gold);
}

.page-about .about-hero .breadcrumb a:hover {
  color: var(--color-text);
}

.page-about .about-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 18px;
  animation: about-fade 0.6s ease 0.2s both;
}

.page-about .about-hero__title {
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 8vw, 4.6rem);
  line-height: 1.2;
  color: var(--color-text);
  margin: 0 0 22px;
  letter-spacing: 0.04em;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
}

.page-about .hero-word {
  display: inline-block;
  opacity: 0;
  animation: about-word-in 0.55s ease forwards;
}

.page-about .hero-word:nth-child(1) { animation-delay: 0.32s; }
.page-about .hero-word:nth-child(2) { animation-delay: 0.42s; }
.page-about .hero-word:nth-child(3) { animation-delay: 0.52s; }
.page-about .hero-word:nth-child(4) { animation-delay: 0.62s; }
.page-about .hero-word:nth-child(5) { animation-delay: 0.72s; }
.page-about .hero-word:nth-child(6) { animation-delay: 0.82s; }
.page-about .hero-word:nth-child(7) { animation-delay: 0.92s; }
.page-about .hero-word:nth-child(8) { animation-delay: 1.02s; }
.page-about .hero-word:nth-child(9) { animation-delay: 1.12s; }

.page-about .about-hero__sub {
  max-width: 520px;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
  opacity: 0.9;
  margin-bottom: 30px;
  animation: about-fade 0.7s ease 1.25s both;
}

.page-about .about-hero__actions {
  animation: about-fade 0.7s ease 1.4s both;
}

.page-about .about-hero__actions .btn--solid {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: var(--color-bg);
}

.page-about .about-hero__actions .btn--solid:hover {
  background: var(--color-line);
  border-color: var(--color-line);
  color: var(--color-bg);
}

.page-about .about-hero__scroll {
  position: absolute;
  z-index: 2;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-text);
  text-decoration: none;
  opacity: 0.8;
  animation: about-fade 0.8s ease 1.7s both;
}

.page-about .about-hero__scroll:hover {
  opacity: 1;
  color: var(--color-gold);
}

.page-about .about-hero__scroll-line {
  display: block;
  width: 1px;
  height: 38px;
  background: linear-gradient(180deg, var(--color-gold), transparent);
}

.page-about .about-hero__scroll-text {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
}

@keyframes about-fade {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes about-word-in {
  from {
    opacity: 0;
    transform: translateY(12px) rotate(1.2deg);
  }
  to {
    opacity: 1;
    transform: translateY(0) rotate(0);
  }
}

/* ===== 品牌理念 ===== */
.page-about .about-philosophy__grid {
  display: grid;
  gap: 28px;
  margin-top: 48px;
}

.page-about .about-philosophy__item {
  border-top: 1px solid var(--color-line);
  padding-top: 20px;
  transition: padding-left 0.3s ease;
}

.page-about .about-philosophy__item:hover {
  padding-left: 12px;
}

.page-about .about-philosophy__item .index-label {
  display: inline-block;
  margin-bottom: 12px;
}

.page-about .about-philosophy__item h3 {
  font-family: var(--font-head);
  font-size: 1.35rem;
  color: var(--color-text);
  margin: 0 0 8px;
}

.page-about .about-philosophy__item p {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--color-muted);
  margin: 0;
}

@media (min-width: 768px) {
  .page-about .about-philosophy__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
  }
}

/* ===== 发展历程时间轴 ===== */
.page-about .about-timeline__banner {
  margin: 40px 0 48px;
}

.page-about .about-timeline__banner img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-timeline__items {
  position: relative;
  margin-left: 12px;
}

.page-about .timeline-item {
  position: relative;
  padding-left: 32px;
  padding-bottom: 44px;
  border-left: 1px solid rgba(197, 168, 94, 0.4);
}

.page-about .timeline-item:last-child {
  border-left-color: transparent;
}

.page-about .timeline-item__marker {
  position: absolute;
  left: -5px;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-gold);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.16);
}

.page-about .timeline-item--current .timeline-item__marker {
  background: var(--color-ok);
  box-shadow: 0 0 0 4px rgba(136, 201, 161, 0.18);
}

.page-about .timeline-item__year {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--color-gold);
  margin-bottom: 6px;
}

.page-about .timeline-item__content h3 {
  font-family: var(--font-head);
  font-size: 1.15rem;
  color: var(--color-text);
  margin: 0 0 8px;
}

.page-about .timeline-item__content p {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--color-muted);
  margin: 0;
}

@media (min-width: 900px) {
  .page-about .about-timeline__items {
    margin-left: 0;
  }

  .page-about .about-timeline__items::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 1px;
    transform: translateX(-50%);
    background: linear-gradient(180deg, transparent, var(--color-line) 8%, var(--color-line) 92%, transparent);
  }

  .page-about .timeline-item {
    display: grid;
    grid-template-columns: 1fr 80px 1fr;
    align-items: start;
    border-left: none;
    padding-left: 0;
    padding-bottom: 52px;
  }

  .page-about .timeline-item__marker {
    grid-column: 2;
    grid-row: 1;
    left: auto;
    top: 8px;
    justify-self: center;
  }

  .page-about .timeline-item__year {
    grid-column: 1;
    grid-row: 1;
    text-align: right;
    padding-right: 32px;
    margin-bottom: 0;
  }

  .page-about .timeline-item__content {
    grid-column: 3;
    grid-row: 1;
    padding-left: 32px;
  }

  .page-about .timeline-item:nth-child(even) .timeline-item__year {
    grid-column: 3;
    text-align: left;
    padding-right: 0;
    padding-left: 32px;
  }

  .page-about .timeline-item:nth-child(even) .timeline-item__content {
    grid-column: 1;
    text-align: right;
    padding-left: 0;
    padding-right: 32px;
  }
}

/* ===== 团队与维护 ===== */
.page-about .about-team__layout {
  display: grid;
  gap: 32px;
  margin-top: 48px;
}

.page-about .about-team__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(197, 168, 94, 0.35);
}

.page-about .about-team__media::after {
  content: "";
  position: absolute;
  left: 12px;
  top: 12px;
  width: 28px;
  height: 28px;
  border-top: 2px solid var(--color-gold);
  border-left: 2px solid var(--color-gold);
  pointer-events: none;
}

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-team__content p {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--color-muted);
  margin: 0 0 14px;
}

.page-about .about-team__stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px 20px;
  margin: 28px 0 0;
  padding: 24px 0 0;
  border-top: 1px solid rgba(197, 168, 94, 0.32);
}

.page-about .about-team__stats li {
  display: flex;
  flex-direction: column;
}

.page-about .about-team__num {
  font-family: var(--font-head);
  font-size: 2rem;
  line-height: 1.15;
  color: var(--color-gold);
}

.page-about .about-team__unit {
  font-size: 1.05rem;
  color: var(--color-muted);
}

.page-about .about-team__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--color-muted);
  margin-top: 6px;
}

@media (min-width: 900px) {
  .page-about .about-team__layout {
    grid-template-columns: 5fr 7fr;
    align-items: center;
    gap: 56px;
  }

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

/* ===== 合规与独立 ===== */
.page-about .about-compliance__grid {
  display: grid;
  gap: 28px;
  margin-top: 48px;
}

.page-about .about-compliance__item {
  background: var(--color-card);
  padding: 32px 28px;
  border-top: 1px solid var(--color-line);
  transition: background 0.3s ease, border-color 0.3s ease;
}

.page-about .about-compliance__item:hover {
  background: var(--about-card-hover);
  border-top-color: var(--color-gold);
}

.page-about .about-compliance__item h3 {
  font-family: var(--font-head);
  font-size: 1.22rem;
  color: var(--color-text);
  margin: 0 0 12px;
}

.page-about .about-compliance__item p {
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--color-muted);
  margin: 0 0 12px;
}

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

.page-about .about-compliance__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

@media (min-width: 900px) {
  .page-about .about-compliance__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===== 下一步导航 ===== */
.page-about .about-next__inner {
  text-align: center;
  border-top: 1px solid var(--color-line);
  padding-top: 56px;
}

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

.page-about .about-next__links .btn {
  margin: 0;
}