.page-about {
  --about-gold: var(--accent-gold);
  --about-orange: var(--accent-orange);
  --about-card-bg: rgba(26, 35, 64, 0.86);
  --about-card-bg-soft: rgba(42, 53, 82, 0.68);
  --about-border: rgba(61, 79, 122, 0.72);
  --about-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --about-head-font: "Noto Sans SC", "HarmonyOS Sans SC", "Source Han Sans SC", system-ui, sans-serif;
  --about-body-font: "Source Han Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
  position: relative;
  overflow-x: clip;
  background: var(--gradient-space);
  color: var(--text-high);
  line-height: 1.6;
}

/* ===== 区块通用标题 ===== */
.page-about .about-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  margin-bottom: clamp(28px, 4vw, 44px);
  padding-left: 2px;
}

.page-about .about-head__index {
  font-family: var(--about-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--about-gold);
  line-height: 1.4;
  padding-top: 0.35em;
  position: relative;
}

.page-about .about-head__index::after {
  content: "";
  display: block;
  width: 34px;
  height: 1px;
  margin-top: 8px;
  background: linear-gradient(90deg, var(--about-gold), transparent);
}

.page-about .about-head__title {
  margin: 0;
  font-family: var(--about-head-font);
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: 0.01em;
  line-height: 1.25;
}

.page-about .about-head__desc {
  margin: 4px 0 0;
  color: var(--text-medium);
  font-size: 0.94rem;
}

/* ===== 面包屑 ===== */
.page-about .about-breadcrumb {
  margin: 0 0 26px;
}

/* ===== 主视觉 ===== */
.page-about .about-hero {
  position: relative;
  padding: clamp(36px, 6vw, 72px) 0 0;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 16%, rgba(245, 183, 0, 0.08), transparent 34%),
    radial-gradient(circle at 86% 4%, rgba(255, 107, 53, 0.1), transparent 42%);
  pointer-events: none;
}

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

.page-about .about-hero__grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-about .about-hero__content {
  position: relative;
}

.page-about .about-hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 6px 14px;
  border: 1px solid var(--about-border);
  border-radius: 999px;
  background: rgba(42, 53, 82, 0.55);
  color: var(--text-medium);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
}

.page-about .about-hero__tag::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--about-gold);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--about-head-font);
  font-size: clamp(3.2rem, 9vw, 6.4rem);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: -0.01em;
}

.page-about .about-hero__accent {
  color: var(--about-gold);
}

.page-about .about-hero__lead {
  max-width: 34em;
  margin: 20px 0 0;
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  color: var(--text-medium);
  font-family: var(--about-body-font);
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 26px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid rgba(61, 79, 122, 0.45);
}

.page-about .about-hero__meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-about .about-hero__meta-num {
  font-family: var(--about-mono);
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  font-weight: 700;
  color: var(--text-high);
}

.page-about .about-hero__meta-label {
  font-size: 0.8rem;
  color: var(--text-medium);
  letter-spacing: 0.04em;
}

.page-about .about-hero__visual {
  position: relative;
  overflow: hidden;
  border-radius: 20px;
  box-shadow: 0 30px 60px rgba(4, 8, 22, 0.5);
}

.page-about .about-hero__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: inherit;
  pointer-events: none;
}

.page-about .about-hero__img {
  display: block;
  width: 100%;
  height: auto;
  min-height: 220px;
  object-fit: cover;
}

/* ===== 品牌故事 ===== */
.page-about .about-story {
  padding: clamp(56px, 9vw, 120px) 0;
}

.page-about .about-story::before {
  content: "";
  display: block;
  width: 60%;
  max-width: 320px;
  height: 3px;
  margin: 0 auto 0 0;
  background: linear-gradient(90deg, transparent, var(--about-gold), rgba(245, 183, 0, 0.15));
  opacity: 0.5;
}

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

.page-about .about-story__text {
  color: var(--text-high);
}

.page-about .about-story__lead {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--text-high);
  line-height: 1.5;
  margin: 0 0 14px;
}

.page-about .about-story__text p {
  margin: 0 0 16px;
  color: var(--text-medium);
  font-family: var(--about-body-font);
}

.page-about .about-story__btn {
  margin-top: 8px;
}

.page-about .about-story__timeline {
  position: relative;
  padding-left: 2px;
}

.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: 20px;
  padding-left: 24px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 7px;
  width: 2px;
  background: linear-gradient(180deg, var(--about-gold), var(--border-starlight), transparent);
  opacity: 0.8;
}

.page-about .about-timeline__item {
  position: relative;
}

.page-about .about-timeline__dot {
  position: absolute;
  top: 22px;
  left: -23px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--about-gold);
  box-shadow: 0 0 0 3px rgba(245, 183, 0, 0.18), 0 0 18px rgba(245, 183, 0, 0.5);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .about-timeline__item:hover .about-timeline__dot,
.page-about .about-timeline__item:focus-within .about-timeline__dot {
  transform: scale(1.25);
  box-shadow: 0 0 0 5px rgba(245, 183, 0, 0.2), 0 0 24px rgba(245, 183, 0, 0.7);
}

.page-about .about-timeline__card {
  padding: 18px 20px;
  background: var(--about-card-bg);
  border: 1px solid var(--about-border);
  border-radius: 14px;
  transition: transform 0.28s ease, border-color 0.28s ease, background 0.28s ease;
}

.page-about .about-timeline__item:hover .about-timeline__card,
.page-about .about-timeline__item:focus-within .about-timeline__card {
  transform: translateY(-3px);
  border-color: var(--about-gold);
  background: rgba(34, 46, 80, 0.92);
}

.page-about .about-timeline__tag {
  display: inline-block;
  font-family: var(--about-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--about-gold);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.page-about .about-timeline__card h3 {
  margin: 0 0 6px;
  font-family: var(--about-head-font);
  font-size: 1.04rem;
  font-weight: 700;
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-medium);
}

/* ===== 数据覆盖 ===== */
.page-about .about-data {
  position: relative;
  padding: clamp(56px, 9vw, 120px) 0;
  background:
    radial-gradient(circle at 78% 18%, rgba(255, 107, 53, 0.12), transparent 26%),
    linear-gradient(180deg, #111a32 0%, #0c1330 68%, #0b1026 100%);
  border-top: 1px solid rgba(61, 79, 122, 0.32);
  border-bottom: 1px solid rgba(61, 79, 122, 0.32);
}

.page-about .about-data__panel {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-about .about-data__chart {
  display: flex;
  justify-content: center;
}

.page-about .about-rings {
  width: min(360px, 80vw);
  height: auto;
}

.page-about .about-rings__ring {
  fill: none;
  stroke-width: 1.8;
  transform-origin: center;
}

.page-about .about-rings__ring--outer {
  stroke: rgba(245, 183, 0, 0.26);
  stroke-dasharray: 5 8;
  animation: about-ring-spin 60s linear infinite;
}

.page-about .about-rings__ring--mid {
  stroke: rgba(255, 107, 53, 0.38);
  stroke-dasharray: 70 30 14 16;
  animation: about-ring-spin-reverse 42s linear infinite;
}

.page-about .about-rings__ring--inner {
  stroke: rgba(198, 208, 227, 0.36);
  stroke-dasharray: 6 10;
  animation: about-ring-spin 32s linear infinite;
}

.page-about .about-rings__core {
  fill: rgba(245, 183, 0, 0.1);
  stroke: rgba(245, 183, 0, 0.6);
  stroke-width: 1.4;
}

.page-about .about-rings__main {
  font-family: var(--about-mono);
  font-size: 26px;
  font-weight: 700;
  fill: var(--text-high);
  letter-spacing: 0.02em;
}

.page-about .about-rings__sub {
  font-family: var(--about-body-font);
  font-size: 11px;
  fill: var(--text-medium);
  letter-spacing: 0.12em;
}

@keyframes about-ring-spin {
  to { transform: rotate(360deg); }
}

@keyframes about-ring-spin-reverse {
  to { transform: rotate(-360deg); }
}

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

.page-about .about-data__stat {
  padding: 20px 16px;
  border: 1px solid var(--about-border);
  border-radius: 14px;
  background: rgba(26, 35, 64, 0.72);
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color 0.28s ease, transform 0.28s ease;
}

.page-about .about-data__stat:hover {
  border-color: var(--about-gold);
  transform: translateY(-2px);
}

.page-about .about-data__stat-num {
  font-family: var(--about-mono);
  font-size: clamp(1.3rem, 2.4vw, 1.8rem);
  font-weight: 700;
  color: var(--about-gold);
}

.page-about .about-data__stat-label {
  font-size: 0.84rem;
  color: var(--text-medium);
}

.page-about .about-data__visual {
  position: relative;
  overflow: hidden;
  margin-top: 6px;
  border-radius: 16px;
  border: 1px solid var(--about-border);
}

.page-about .about-data__img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 300px;
  object-fit: cover;
  opacity: 0.62;
}

.page-about .about-data__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11, 16, 38, 0.88) 0%, rgba(11, 16, 38, 0.42) 68%, rgba(11, 16, 38, 0.16) 100%);
  pointer-events: none;
}

.page-about .about-data__visual-note {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 14px;
  margin: 0;
  z-index: 1;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-high);
  line-height: 1.5;
}

.page-about .about-data__desc {
  margin: 22px 0 0;
  padding: 16px 18px;
  border-left: 3px solid var(--about-gold);
  background: rgba(42, 53, 82, 0.45);
  border-radius: 0 12px 12px 0;
  color: var(--text-medium);
  font-size: 0.94rem;
}

/* ===== 内容生产流程 ===== */
.page-about .about-process {
  padding: clamp(56px, 9vw, 120px) 0;
}

.page-about .about-process__grid {
  display: grid;
  gap: 18px;
}

.page-about .about-process__step {
  position: relative;
  padding: 24px 20px 20px;
  background:
    linear-gradient(180deg, rgba(42, 53, 82, 0.55), rgba(26, 35, 64, 0.82));
  border: 1px solid var(--about-border);
  border-radius: 16px;
  transition: transform 0.28s ease, border-color 0.28s ease;
}

.page-about .about-process__step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 20px;
  right: 20px;
  height: 1px;
  background: linear-gradient(90deg, var(--about-gold), transparent);
  opacity: 0.45;
}

.page-about .about-process__step:hover {
  transform: translateY(-4px);
  border-color: rgba(245, 183, 0, 0.72);
}

.page-about .about-process__num {
  display: block;
  font-family: var(--about-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--about-orange);
  margin-bottom: 10px;
}

.page-about .about-process__step h3 {
  margin: 0 0 8px;
  font-family: var(--about-head-font);
  font-size: 1.1rem;
  font-weight: 700;
}

.page-about .about-process__step p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-medium);
}

/* ===== 团队价值观 ===== */
.page-about .about-values {
  padding: clamp(56px, 9vw, 120px) 0;
  background:
    radial-gradient(circle at 14% 72%, rgba(245, 183, 0, 0.1), transparent 30%),
    radial-gradient(circle at 88% 32%, rgba(255, 107, 53, 0.1), transparent 34%);
}

.page-about .about-values__grid {
  display: grid;
  gap: 16px;
}

.page-about .about-value-card {
  position: relative;
  padding: 24px 20px;
  background: var(--about-card-bg-soft);
  border: 1px solid var(--about-border);
  border-radius: 16px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: border-color 0.28s ease, transform 0.28s ease, background 0.28s ease;
}

.page-about .about-value-card::after {
  content: "";
  position: absolute;
  left: 20px;
  top: 20px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245, 183, 0, 0.18), transparent 70%);
  pointer-events: none;
}

.page-about .about-value-card:hover {
  transform: translateY(-4px);
  border-color: var(--about-gold);
  background: rgba(42, 53, 82, 0.84);
}

.page-about .about-value-card__icon {
  width: 44px;
  height: 44px;
  color: var(--about-gold);
  margin-bottom: 14px;
}

.page-about .about-value-card h3 {
  margin: 0 0 8px;
  font-family: var(--about-head-font);
  font-size: 1.08rem;
  font-weight: 700;
}

.page-about .about-value-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-medium);
}

.page-about .about-values__visual {
  position: relative;
  overflow: hidden;
  margin-top: 22px;
  border-radius: 18px;
  border: 1px solid var(--about-border);
}

.page-about .about-values__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  min-height: 180px;
}

.page-about .about-values__visual-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
  background: linear-gradient(180deg, transparent, rgba(11, 16, 38, 0.86));
  z-index: 1;
}

.page-about .about-values__visual-mark {
  font-family: var(--about-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--about-gold);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.page-about .about-values__visual-overlay p {
  margin: 0;
  color: var(--text-high);
  font-size: 0.95rem;
  max-width: 30em;
}

/* ===== 服务承诺 ===== */
.page-about .about-commit {
  position: relative;
  padding: clamp(56px, 9vw, 120px) 0;
}

.page-about .about-commit::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--about-gold), transparent);
  opacity: 0.7;
}

.page-about .about-commit__inner {
  position: relative;
  padding: clamp(28px, 5vw, 56px) clamp(20px, 4vw, 48px);
  background:
    radial-gradient(circle at 92% 12%, rgba(255, 107, 53, 0.16), transparent 40%),
    radial-gradient(circle at 6% 90%, rgba(245, 183, 0, 0.1), transparent 42%),
    linear-gradient(135deg, rgba(26, 35, 64, 0.95), rgba(11, 16, 38, 0.94));
  border: 1px solid var(--about-border);
  border-radius: 22px;
  overflow: hidden;
}

.page-about .about-commit__inner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--about-gold), var(--about-orange));
}

.page-about .about-commit__index {
  font-family: var(--about-mono);
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  color: var(--about-gold);
}

.page-about .about-commit__content h2 {
  margin: 10px 0 8px;
  font-family: var(--about-head-font);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
}

.page-about .about-commit__lead {
  margin: 0 0 18px;
  color: var(--text-medium);
  font-size: 1rem;
}

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

.page-about .about-commit__list li {
  position: relative;
  padding-left: 26px;
  color: var(--text-high);
  font-size: 0.96rem;
}

.page-about .about-commit__list li::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 0.58em;
  width: 10px;
  height: 10px;
  border: 2px solid var(--about-gold);
  border-radius: 50%;
  background: transparent;
}

.page-about .about-commit__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

/* ===== 桌面端增强 ===== */
@media (min-width: 48rem) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .about-hero__meta {
    gap: 28px 36px;
  }

  .page-about .about-story__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: clamp(36px, 6vw, 80px);
    align-items: start;
  }

  .page-about .about-data__panel {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: clamp(28px, 5vw, 56px);
  }

  .page-about .about-data__visual-note {
    max-width: 46%;
  }

  .page-about .about-process__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
  }

  .page-about .about-values__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .page-about .about-commit__inner {
    padding: 48px 56px;
  }

  .page-about .about-commit__list {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 64rem) {
  .page-about .about-head {
    gap: 22px;
  }

  .page-about .about-process__grid {
    grid-template-columns: repeat(4, 1fr);
    align-items: stretch;
  }

  .page-about .about-process__step:nth-child(2) {
    transform: translateY(18px);
  }

  .page-about .about-process__step:nth-child(3) {
    transform: translateY(-6px);
  }

  .page-about .about-process__step:nth-child(4) {
    transform: translateY(12px);
  }

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

  .page-about .about-values__visual-overlay {
    padding: 28px 32px;
  }

  .page-about .about-values__visual-overlay p {
    font-size: 1rem;
  }

  .page-about .about-rings {
    width: 400px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-rings__ring,
  .page-about .about-rings__ring--outer,
  .page-about .about-rings__ring--mid,
  .page-about .about-rings__ring--inner {
    animation: none;
  }

  .page-about .about-timeline__card,
  .page-about .about-process__step,
  .page-about .about-value-card,
  .page-about .about-data__stat {
    transition: none;
  }
}