.page-about {
  --about-soft-border: rgba(26, 29, 28, 0.08);
  --about-text-muted: #6E6E6A;
  --about-navy-soft: #354B55;
  --about-navy-shadow: rgba(26, 29, 28, 0.35);
  --about-card-radius: 8px;
  font-family: var(--phn-font-body);
  background: var(--phn-cream);
  color: var(--phn-ink);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-about .container {
  width: min(var(--phn-container), 100% - 40px);
  margin-inline: auto;
}

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

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--phn-font-heading);
  font-weight: 700;
  line-height: 1.2;
}

.page-about .section-title {
  font-size: clamp(26px, 4vw, 40px);
  margin: 8px 0 20px;
}

.page-about .section-title-index {
  font-family: var(--phn-font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--phn-orange);
  text-transform: uppercase;
  margin: 0 0 8px;
}

.page-about .data-chip {
  display: inline-block;
  font-family: var(--phn-font-mono);
  font-size: 12px;
  background: var(--phn-orange);
  color: #fff;
  padding: 2px 8px;
  border-radius: 3px;
}

.page-about .tag {
  display: inline-block;
  font-size: 13px;
  background: var(--phn-moss);
  color: #fff;
  padding: 3px 10px;
  border-radius: 999px;
}

.page-about .btn {
  display: inline-block;
  font-weight: 700;
  padding: 11px 24px;
  border-radius: 5px;
  text-decoration: none;
  transition: background .2s, transform .2s, box-shadow .2s;
}

.page-about .btn-primary {
  background: var(--phn-orange);
  color: #fff;
}

.page-about .btn-primary:hover {
  background: var(--phn-orange-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(242, 92, 5, 0.28);
}

/* ===== 面包屑 ===== */
.page-about .breadcrumb {
  background: var(--phn-stone);
  padding: 14px 0;
  border-bottom: 1px solid var(--about-soft-border);
}

.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .breadcrumb-item {
  font-size: 13px;
  color: var(--phn-gray);
}

.page-about .breadcrumb-item a {
  color: var(--phn-gray);
  text-decoration: none;
}

.page-about .breadcrumb-item a:hover {
  color: var(--phn-orange);
}

.page-about .breadcrumb-item + .breadcrumb-item::before {
  content: "//";
  margin-right: 6px;
  color: var(--phn-orange);
  font-family: var(--phn-font-mono);
}

.page-about .breadcrumb-item[aria-current="page"] {
  color: var(--phn-ink);
  font-weight: 700;
}

/* ===== 首屏 ===== */
.page-about .about-hero {
  position: relative;
  background: var(--phn-navy);
  color: var(--phn-cream);
  padding: 68px 0 84px;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  right: -8%;
  top: -20%;
  background: rgba(242, 92, 5, 0.22);
  clip-path: polygon(0 12%, 100% 0, 88% 100%, 12% 88%);
  transform: rotate(14deg);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: -6%;
  bottom: -28%;
  width: 60%;
  height: 180px;
  background: linear-gradient(100deg, transparent 40%, rgba(216, 213, 200, 0.14) 100%);
  transform: skewX(-18deg);
  pointer-events: none;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 36px;
  position: relative;
  z-index: 1;
}

.page-about .about-hero__kicker {
  font-family: var(--phn-font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--phn-stone);
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
}

.page-about .about-hero__title {
  font-size: clamp(36px, 6vw, 60px);
  line-height: 1.08;
  margin: 0 0 14px;
  text-transform: uppercase;
  letter-spacing: 0.01em;
}

.page-about .about-hero__subtitle {
  font-size: 15px;
  color: var(--phn-stone);
  letter-spacing: 0.16em;
  border-left: 4px solid var(--phn-orange);
  padding-left: 14px;
  margin: 0;
}

.page-about .about-hero__panel {
  background: rgba(43, 58, 66, 0.86);
  border-left: 4px solid var(--phn-orange);
  padding: 26px 22px;
  border-radius: 6px 0 0 6px;
}

.page-about .about-hero__lead {
  font-size: 16px;
  line-height: 1.8;
  color: var(--phn-cream);
  margin: 0 0 18px;
}

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

.page-about .about-hero__tags .tag {
  background: rgba(242, 92, 5, 0.18);
  border: 1px solid rgba(242, 92, 5, 0.36);
  color: #ffb380;
}

/* ===== 品牌故事 ===== */
.page-about .about-story {
  padding: 72px 0 40px;
  background: var(--phn-cream);
}

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

.page-about .about-story__content p {
  font-size: 16px;
  margin: 0 0 16px;
}

.page-about .about-story__action {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  margin-top: 28px;
}

.page-about .about-story__link {
  color: var(--phn-orange);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid rgba(242, 92, 5, 0.3);
  padding-bottom: 2px;
  transition: border-color .2s;
}

.page-about .about-story__link:hover {
  border-color: var(--phn-orange);
}

.page-about .about-story__figure {
  margin: 0;
  border-radius: 10px;
  overflow: hidden;
  background: var(--phn-stone);
  box-shadow: 0 16px 40px rgba(26, 29, 28, 0.12);
}

.page-about .about-story__figure img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-about .about-story__figure figcaption {
  font-size: 14px;
  color: var(--phn-gray);
  padding: 12px 16px;
  background: var(--phn-stone);
}

/* ===== 核心信念 ===== */
.page-about .about-belief {
  padding: 56px 0 72px;
  background: var(--phn-stone);
  position: relative;
}

.page-about .about-belief::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(42, 58, 66, 0.05) 0%, transparent 40%, rgba(196, 106, 74, 0.12) 100%);
  pointer-events: none;
}

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

.page-about .about-belief__grid {
  display: grid;
  gap: 18px;
  margin-top: 36px;
  position: relative;
  z-index: 1;
}

.page-about .about-belief__item {
  background: var(--phn-cream);
  border-radius: var(--about-card-radius);
  padding: 26px 22px;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  box-shadow: 0 6px 18px rgba(26, 29, 28, 0.08);
  transition: transform .3s, box-shadow .3s;
}

.page-about .about-belief__item:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(26, 29, 28, 0.14);
}

.page-about .about-belief__num {
  font-family: var(--phn-font-mono);
  font-size: 13px;
  color: var(--phn-orange);
  display: block;
  margin-bottom: 10px;
}

.page-about .about-belief__item h3 {
  font-size: 28px;
  margin: 0 0 12px;
  letter-spacing: 0.02em;
}

.page-about .about-belief__item--speed h3 {
  color: var(--phn-orange);
}

.page-about .about-belief__item--accuracy h3 {
  color: var(--phn-navy);
}

.page-about .about-belief__item--innovation h3 {
  color: var(--phn-terracotta);
}

.page-about .about-belief__item p {
  margin: 0 0 16px;
  font-size: 15px;
}

.page-about .about-belief__meta {
  font-family: var(--phn-font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--phn-gray);
  text-transform: uppercase;
}

/* ===== 时间线 ===== */
.page-about .about-timeline {
  padding: 72px 0 64px;
  background: var(--phn-cream);
}

.page-about .about-timeline__intro {
  font-size: 16px;
  color: var(--phn-gray);
  margin: 0 0 32px;
  max-width: 640px;
}

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

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--phn-orange) 0%, var(--phn-stone) 100%);
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 52px;
  margin-bottom: 32px;
}

.page-about .about-timeline__year {
  position: absolute;
  left: 0;
  top: 4px;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-about .about-timeline__year .data-chip {
  background: var(--phn-orange);
  font-size: 11px;
  padding: 4px 8px;
}

.page-about .about-timeline__card {
  background: var(--phn-cream);
  border: 1px solid var(--about-soft-border);
  border-left: 4px solid var(--phn-orange);
  padding: 20px 20px 18px;
  border-radius: 6px;
  box-shadow: 0 4px 14px rgba(26, 29, 28, 0.05);
  transition: border-color .25s;
}

.page-about .about-timeline__card:hover {
  border-left-color: var(--phn-moss);
}

.page-about .about-timeline__card h3 {
  font-size: 22px;
  margin: 0 0 8px;
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: 15px;
}

.page-about .about-timeline__card .tag {
  margin-top: 12px;
  background: var(--phn-orange);
  color: #fff;
  font-size: 12px;
}

/* ===== 数据实力 ===== */
.page-about .about-stats {
  padding: 64px 0;
  background: var(--phn-stone);
}

.page-about .about-stats__header {
  margin-bottom: 32px;
}

.page-about .about-stats__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.page-about .about-stat-card {
  background: var(--phn-cream);
  border-radius: var(--about-card-radius);
  padding: 20px 16px;
  min-height: 132px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 4px 14px rgba(26, 29, 28, 0.06);
  transition: transform .25s, box-shadow .25s;
}

.page-about .about-stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 26px rgba(26, 29, 28, 0.12);
}

.page-about .about-stat-card__num {
  font-family: var(--phn-font-mono);
  font-size: 34px;
  font-weight: 700;
  color: var(--phn-orange);
  line-height: 1.1;
  transition: color .25s;
}

.page-about .about-stat-card:hover .about-stat-card__num {
  color: var(--phn-orange-dark);
}

.page-about .about-stat-card__label {
  font-size: 14px;
  color: var(--phn-ink);
  font-weight: 600;
  margin-top: 8px;
}

.page-about .about-stat-card__more {
  font-size: 13px;
  color: var(--phn-gray);
  margin-top: 6px;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height .35s, opacity .35s;
}

.page-about .about-stat-card:hover .about-stat-card__more {
  max-height: 90px;
  opacity: 1;
}

.page-about .about-stats__figure {
  margin: 28px 0 0;
  border-radius: 10px;
  overflow: hidden;
  background: var(--phn-cream);
}

.page-about .about-stats__figure img {
  aspect-ratio: 8 / 5;
  object-fit: cover;
  width: 100%;
}

.page-about .about-stats__figure figcaption {
  font-size: 13px;
  color: var(--phn-gray);
  padding: 10px 14px;
  background: var(--phn-cream);
}

.page-about .about-stats__note {
  font-size: 15px;
  color: var(--phn-ink);
  background: var(--phn-cream);
  border-left: 4px solid var(--phn-moss);
  padding: 16px 18px;
  border-radius: 0 6px 6px 0;
  margin: 20px 0 0;
  box-shadow: 0 4px 14px rgba(26, 29, 28, 0.05);
}

/* ===== 本地化 ===== */
.page-about .about-local {
  background: var(--phn-navy);
  color: var(--phn-cream);
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}

.page-about .about-local::before {
  content: "";
  position: absolute;
  top: -20px;
  right: -60px;
  width: 200px;
  height: 200px;
  border: 2px solid rgba(212, 175, 55, 0.22);
  border-radius: 50%;
  transform: skewX(-8deg);
}

.page-about .about-local__grid {
  display: grid;
  gap: 36px;
  position: relative;
  z-index: 1;
}

.page-about .about-local .section-title-index {
  color: var(--phn-gold);
}

.page-about .about-local__content h2 {
  color: var(--phn-cream);
}

.page-about .about-local__content p {
  font-size: 15px;
  color: rgba(247, 242, 233, 0.88);
  margin: 0 0 16px;
}

.page-about .about-local__list {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
}

.page-about .about-local__list li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  color: rgba(247, 242, 233, 0.9);
}

.page-about .about-local__list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--phn-orange);
  font-family: var(--phn-font-mono);
}

.page-about .about-local__figure {
  margin: 0;
  border-radius: 10px;
  overflow: hidden;
  background: var(--phn-navy-soft);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.page-about .about-local__figure img {
  aspect-ratio: 8 / 5;
  object-fit: cover;
  width: 100%;
}

.page-about .about-local__figure figcaption {
  font-family: var(--phn-font-mono);
  font-size: 12px;
  color: var(--phn-stone);
  padding: 10px 14px;
  background: rgba(43, 58, 66, 0.7);
}

/* ===== 延伸阅读 ===== */
.page-about .about-outreach {
  padding: 56px 0 72px;
  background: var(--phn-cream);
}

.page-about .about-outreach__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-outreach__link {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  background: var(--phn-stone);
  border-radius: 8px;
  padding: 20px 18px;
  text-decoration: none;
  color: var(--phn-ink);
  border: 1px solid transparent;
  transition: border-color .25s, background .25s, transform .25s;
}

.page-about .about-outreach__link:hover {
  border-color: var(--phn-orange);
  background: var(--phn-cream);
  transform: translateX(6px);
}

.page-about .about-outreach__index {
  font-family: var(--phn-font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--phn-orange);
}

.page-about .about-outreach__name {
  font-size: 17px;
  font-weight: 700;
  color: var(--phn-ink);
}

.page-about .about-outreach__desc {
  font-size: 14px;
  color: var(--phn-gray);
  border-left: 2px solid var(--phn-stone);
  padding-left: 10px;
  margin-left: 4px;
}

/* ===== 屏幕 ≥ 600px ===== */
@media (min-width: 600px) {
  .page-about .container {
    width: min(var(--phn-container), 100% - 48px);
  }

  .page-about .about-stats__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

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

  .page-about .about-outreach__link {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .page-about .about-outreach__desc {
    border-left: none;
    padding-left: 0;
    margin-left: 0;
  }

  .page-about .about-timeline__list::before {
    left: 16px;
  }

  .page-about .about-timeline__item {
    padding-left: 56px;
  }

  .page-about .about-timeline__year {
    width: 34px;
  }
}

/* ===== 屏幕 ≥ 960px ===== */
@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 86px 0 108px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: end;
    gap: 48px;
  }

  .page-about .about-hero__content {
    padding-bottom: 8px;
  }

  .page-about .about-hero__title {
    font-size: clamp(48px, 6vw, 68px);
  }

  .page-about .about-hero__panel {
    padding: 30px 28px;
  }

  .page-about .about-hero__lead {
    font-size: 17px;
  }

  .page-about .about-story {
    padding: 96px 0 64px;
  }

  .page-about .about-story__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 52px;
    align-items: center;
  }

  .page-about .about-belief__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }

  .page-about .about-belief__item {
    padding: 34px 28px;
  }

  .page-about .about-belief__item h3 {
    font-size: 32px;
  }

  .page-about .about-timeline__list {
    padding-left: 0;
  }

  .page-about .about-timeline__list::before {
    left: 50%;
    width: 2px;
  }

  .page-about .about-timeline__item {
    width: 50%;
    padding-left: 56px;
  }

  .page-about .about-timeline__item:nth-child(odd) {
    left: 0;
    padding-right: 66px;
    padding-left: 0;
  }

  .page-about .about-timeline__item:nth-child(even) {
    left: 50%;
  }

  .page-about .about-timeline__year {
    left: auto;
    right: -17px;
    width: 34px;
    height: 34px;
  }

  .page-about .about-timeline__item:nth-child(odd) .about-timeline__year {
    left: auto;
    right: -17px;
  }

  .page-about .about-timeline__item:nth-child(even) .about-timeline__year {
    left: -17px;
    right: auto;
  }

  .page-about .about-timeline__card {
    padding: 24px;
  }

  .page-about .about-stats {
    padding: 88px 0;
  }

  .page-about .about-stats__grid {
    gap: 20px;
  }

  .page-about .about-stat-card {
    padding: 26px 22px;
  }

  .page-about .about-stat-card__num {
    font-size: 40px;
  }

  .page-about .about-stats__figure {
    margin-top: 40px;
  }

  .page-about .about-stats__note {
    margin-top: 24px;
    padding: 20px 24px;
  }

  .page-about .about-local__grid {
    grid-template-columns: 1fr 0.92fr;
    gap: 56px;
    align-items: center;
  }

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

  .page-about .about-outreach__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
  }

  .page-about .about-outreach__link {
    min-height: 150px;
    justify-content: flex-start;
  }

  .page-about .about-outreach__link:hover {
    transform: translateY(-4px) translateX(0);
  }
}

/* ===== 屏幕 ≥ 1280px ===== */
@media (min-width: 1280px) {
  .page-about .about-story__grid {
    gap: 72px;
  }

  .page-about .about-local__grid {
    gap: 80px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1.05fr 0.95fr;
  }
}

.page-about {
  --phn-navy-soft: transparent;
}