/* ===== 页面作用域：.page-about ===== */
.page-about {
  --about-line: rgba(199, 208, 204, 0.16);
  --about-shadow: 0 18px 42px rgba(0, 0, 0, 0.38);
  position: relative;
  background:
    radial-gradient(circle at 88% 6%, rgba(180, 74, 255, 0.14) 0%, transparent 22%),
    radial-gradient(circle at 10% 72%, rgba(255, 107, 43, 0.07) 0%, transparent 24%),
    linear-gradient(160deg, #071512 0%, #0B3D2E 52%, #071512 100%);
  color: var(--color-moon);
  overflow-x: clip;
}

.page-about #brand-positioning,
.page-about #journey,
.page-about #data-principles,
.page-about #verification,
.page-about #team {
  scroll-margin-top: 5.5rem;
}

/* ===== 面包屑微调 ===== */
.page-about .breadcrumbs {
  padding-top: 1.5rem;
  padding-bottom: 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: rgba(242, 245, 243, 0.6);
}

/* ===== 01 品牌定位 / Hero ===== */
.page-about .about-hero {
  position: relative;
  padding-top: clamp(2.5rem, 6vw, 5rem);
  padding-bottom: 1.25rem;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, transparent 0 78%, rgba(180, 74, 255, 0.07) 78% 80%, transparent 80% 100%),
    linear-gradient(115deg, transparent 0 88%, rgba(255, 107, 43, 0.08) 88% 90%, transparent 90% 100%);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.page-about .about-hero__copy {
  min-width: 0;
}

.page-about .about-hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0 0 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-orange);
}

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

.page-about .about-hero__eyebrow::after {
  content: "";
  width: 56px;
  height: 1px;
  background: linear-gradient(90deg, var(--color-orange), transparent);
}

.page-about .about-hero h1 {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5.6vw, 4.1rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--color-moon);
}

.page-about .about-hero__title-accent {
  display: block;
  color: var(--color-orange);
}

.page-about .about-hero__lead {
  max-width: 46em;
  margin: 0 0 2rem;
  font-size: 1.0625rem;
  line-height: 1.9;
  color: rgba(242, 245, 243, 0.82);
}

.page-about .about-hero__lead span {
  color: var(--color-moon);
  font-weight: 500;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 0 0 2rem;
}

.page-about .about-hero__stat {
  padding: 1rem 0.875rem;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-sm);
  background: rgba(11, 61, 46, 0.36);
}

.page-about .about-hero__stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-orange);
}

.page-about .about-hero__stat-num em {
  font-style: normal;
  font-size: 0.72em;
  color: var(--color-silver);
}

.page-about .about-hero__stat-label {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.8125rem;
  color: rgba(242, 245, 243, 0.7);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
}

.page-about .about-hero__emblem {
  position: relative;
  justify-self: center;
  width: 100%;
  max-width: 380px;
  margin: 0;
  padding: 0.875rem;
  background: linear-gradient(145deg, rgba(199, 208, 204, 0.12), rgba(7, 21, 18, 0.2));
  border: 1px solid rgba(199, 208, 204, 0.24);
  box-shadow: var(--about-shadow);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
  transition: filter var(--duration-base) var(--ease-out);
}

.page-about .about-hero__emblem:hover {
  filter: drop-shadow(0 0 22px rgba(180, 74, 255, 0.28));
}

.page-about .about-hero__emblem::after {
  content: "";
  position: absolute;
  inset: 0.45rem;
  border: 1px solid rgba(255, 107, 43, 0.18);
  clip-path: inherit;
  pointer-events: none;
}

.page-about .about-hero__emblem-img {
  display: block;
  width: 100%;
  height: auto;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-about .about-hero__emblem-caption {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.875rem 0.5rem 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-silver);
}

.page-about .about-hero__section-nav {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
  margin-top: 3rem;
  padding-top: 1rem;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
  border-top: 1px solid rgba(199, 208, 204, 0.12);
}

.page-about .about-hero__section-nav a {
  position: relative;
  padding: 0.4rem 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: rgba(242, 245, 243, 0.58);
  transition: color var(--duration-fast) var(--ease-out);
}

.page-about .about-hero__section-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--color-lime);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-base) var(--ease-out);
}

.page-about .about-hero__section-nav a:hover,
.page-about .about-hero__section-nav a.is-active {
  color: var(--color-moon);
}

.page-about .about-hero__section-nav a:hover::after,
.page-about .about-hero__section-nav a.is-active::after {
  transform: scaleX(1);
}

/* ===== 共用章节头 ===== */
.page-about .about-section-head {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  align-items: baseline;
  margin-bottom: 2.5rem;
}

.page-about .about-section-head__index {
  flex-basis: 100%;
  display: inline-flex;
  gap: 0.75rem;
  align-items: center;
  margin: 0 0 0.25rem;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--color-orange);
}

.page-about .about-section-head__index span {
  color: var(--color-silver);
}

.page-about .about-section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.2vw, 2.45rem);
  font-weight: 700;
  line-height: 1.2;
}

.page-about .about-section-head > p {
  flex-basis: 100%;
  max-width: 56em;
  margin: 0.25rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(242, 245, 243, 0.72);
}

.page-about .about-section-head--compact {
  margin-bottom: 1.5rem;
}

/* ===== 02 发展历程 ===== */
.page-about .about-timeline {
  position: relative;
  padding: clamp(3rem, 6vw, 5.5rem) 0 clamp(3.5rem, 7vw, 6rem);
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 6rem;
  right: 0;
  width: clamp(120px, 28vw, 360px);
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(180, 74, 255, 0.34));
}

.page-about .about-timeline__track {
  position: relative;
  display: grid;
  gap: 1.9rem;
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 5.25rem minmax(0, 1fr);
  gap: 0 1rem;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 5.25rem;
  top: 0.5rem;
  bottom: -1.6rem;
  width: 2px;
  background: linear-gradient(to bottom, rgba(198, 244, 58, 0.4), rgba(199, 208, 204, 0.08));
}

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

.page-about .about-timeline__year {
  position: relative;
  padding-top: 1.35rem;
  padding-right: 1.25rem;
  text-align: right;
}

.page-about .about-timeline__year-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-lime);
  white-space: nowrap;
}

.page-about .about-timeline__year-tag {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: rgba(242, 245, 243, 0.48);
}

.page-about .about-timeline__year::after {
  content: "";
  position: absolute;
  top: 1.55rem;
  right: 0;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--color-lime);
  box-shadow: 0 0 0 4px rgba(198, 244, 58, 0.14);
  transform: translateX(50%);
}

.page-about .about-timeline__panel {
  position: relative;
  padding: 1.5rem 1.35rem 1.6rem;
  background: linear-gradient(140deg, rgba(11, 61, 46, 0.88), rgba(7, 21, 18, 0.94));
  border: 1px solid var(--about-line);
  border-radius: var(--radius-sm);
  box-shadow: var(--about-shadow);
  transition: transform var(--duration-base) var(--ease-out), border-color var(--duration-base) var(--ease-out);
}

.page-about .about-timeline__panel::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 12px;
  right: -5px;
  bottom: -5px;
  background: rgba(199, 208, 204, 0.045);
  border: 1px solid rgba(199, 208, 204, 0.08);
  border-radius: var(--radius-sm);
  z-index: -1;
}

.page-about .about-timeline__item:hover .about-timeline__panel {
  transform: translateY(-2px);
  border-color: rgba(255, 107, 43, 0.3);
}

.page-about .about-timeline__panel-tag {
  display: inline-block;
  margin-bottom: 0.8rem;
  padding: 0.2rem 0.5rem;
  border: 1px solid rgba(255, 107, 43, 0.32);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--color-orange);
}

.page-about .about-timeline__panel h3 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2vw, 1.55rem);
  font-weight: 700;
}

.page-about .about-timeline__panel p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.82;
  color: rgba(242, 245, 243, 0.76);
}

/* ===== 03 数据与内容原则 ===== */
.page-about .about-principles {
  position: relative;
  padding: clamp(3rem, 6vw, 5rem) 0 clamp(3.5rem, 7vw, 5.5rem);
}

.page-about .about-map {
  margin: 0 0 2.75rem;
}

.page-about .about-map__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-md);
  background:
    linear-gradient(rgba(199, 208, 204, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(199, 208, 204, 0.05) 1px, transparent 1px);
  background-size: 32px 32px;
}

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

.page-about .about-map__caption {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: rgba(242, 245, 243, 0.7);
}

.page-about .about-map__dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--color-lime);
  animation: about-pulse 2.4s ease-out infinite;
}

@keyframes about-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(198, 244, 58, 0.55); }
  50% { box-shadow: 0 0 0 6px rgba(198, 244, 58, 0); }
}

.page-about .about-principles__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.page-about .about-principles__rule {
  position: relative;
  padding: 1.5rem 1.5rem 1.75rem 3.25rem;
  overflow: hidden;
  background: rgba(11, 61, 46, 0.38);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-sm);
}

.page-about .about-principles__rule::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--color-orange), transparent 72%);
}

.page-about .about-principles__rule-num {
  position: absolute;
  left: 1rem;
  top: 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-orange);
}

.page-about .about-principles__rule h3 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
}

.page-about .about-principles__rule p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.82;
  color: rgba(242, 245, 243, 0.74);
}

.page-about .about-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0 0 2.5rem;
  border: 1px solid var(--about-line);
  background: rgba(199, 208, 204, 0.14);
}

.page-about .about-metrics__item {
  padding: 1.5rem 1.15rem;
  background: #071512;
}

.page-about .about-metrics__num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 2.9rem);
  font-weight: 700;
  line-height: 1;
  color: var(--color-orange);
}

.page-about .about-metrics__num span,
.page-about .about-metrics__num small {
  font-size: 0.62em;
  font-weight: 600;
}

.page-about .about-metrics__note {
  display: block;
  margin-top: 0.55rem;
  font-size: 0.8125rem;
  color: rgba(242, 245, 243, 0.68);
}

.page-about .about-chart {
  margin: 0;
}

.page-about .about-chart__frame {
  overflow: hidden;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-sm);
}

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

.page-about .about-chart__caption {
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: rgba(242, 245, 243, 0.68);
}

/* ===== 04 品牌认证标识 ===== */
.page-about .about-verification {
  position: relative;
  padding: clamp(3rem, 6vw, 5rem) 0;
}

.page-about .about-verification__panel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
  align-items: center;
  padding: clamp(1.75rem, 4vw, 3rem);
  background:
    linear-gradient(120deg, rgba(180, 74, 255, 0.16), transparent 34%),
    linear-gradient(150deg, rgba(11, 61, 46, 0.92), rgba(7, 21, 18, 0.96));
  border: 1px solid rgba(180, 74, 255, 0.26);
  border-radius: var(--radius-md);
  box-shadow: var(--about-shadow);
}

.page-about .about-verification__panel::after {
  content: "";
  position: absolute;
  top: 8px;
  left: 8px;
  right: 8px;
  bottom: 8px;
  border: 1px solid rgba(199, 208, 204, 0.12);
  border-radius: calc(var(--radius-md) - 2px);
  pointer-events: none;
}

.page-about .about-verification__badge-wrap {
  position: relative;
  display: flex;
  justify-content: center;
  z-index: 1;
}

.page-about .about-verification__badge {
  width: min(240px, 72%);
  height: auto;
  transition: transform var(--duration-base) var(--ease-out), filter var(--duration-base) var(--ease-out);
}

.page-about .about-verification__badge:hover {
  transform: rotate(-3deg) scale(1.02);
  filter: drop-shadow(0 0 20px rgba(180, 74, 255, 0.35));
}

.page-about .about-verification__badge .about-verification__arc {
  transition: opacity var(--duration-base) var(--ease-out);
}

.page-about .about-verification__badge:hover .about-verification__arc {
  opacity: 0.72;
}

.page-about .about-verification__content {
  position: relative;
  z-index: 1;
  min-width: 0;
}

.page-about .about-verification__desc {
  margin: 0 0 1.6rem;
  line-height: 1.88;
  color: rgba(242, 245, 243, 0.84);
}

.page-about .about-verification__list {
  display: grid;
  gap: 0.875rem;
  margin: 0 0 1.75rem;
  padding: 0;
  list-style: none;
}

.page-about .about-verification__list li {
  display: grid;
  grid-template-columns: 1.6rem minmax(0, 1fr);
  gap: 0.75rem;
  align-items: start;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: rgba(242, 245, 243, 0.78);
}

.page-about .about-verification__list-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.6rem;
  height: 1.6rem;
  margin-top: 0.2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-purple);
  border: 1px solid rgba(180, 74, 255, 0.4);
  border-radius: 50%;
}

.page-about .about-verification__action {
  margin-top: 0.5rem;
}

/* ===== 05 团队与联系方式 ===== */
.page-about .about-team {
  padding: clamp(2.5rem, 5vw, 4.5rem) 0 4.5rem;
}

.page-about .about-team__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2.5rem;
}

.page-about .about-team__desc {
  max-width: 56em;
  margin: 0;
  line-height: 1.9;
  color: rgba(242, 245, 243, 0.78);
}

.page-about .about-team__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 2rem;
}

.page-about .about-team__facts div {
  padding: 1.25rem 1rem;
  font-size: 0.875rem;
  line-height: 1.4;
  color: rgba(242, 245, 243, 0.7);
  background: rgba(11, 61, 46, 0.3);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-sm);
}

.page-about .about-team__facts span {
  display: block;
  margin-bottom: 0.2rem;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-weight: 700;
  color: var(--color-orange);
}

.page-about .about-team__aside {
  align-self: start;
  padding: 2rem;
  background: linear-gradient(135deg, rgba(255, 107, 43, 0.13), rgba(11, 61, 46, 0.72));
  border: 1px solid rgba(255, 107, 43, 0.28);
  border-radius: var(--radius-md);
}

.page-about .about-team__aside-title {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
}

.page-about .about-team__aside-text {
  margin: 0 0 1.4rem;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(242, 245, 243, 0.76);
}

/* ===== 桌面增强 ===== */
@media (min-width: 768px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.8fr);
    gap: 3rem;
  }

  .page-about .about-hero__emblem {
    max-width: 360px;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 7rem minmax(0, 1fr);
    gap: 0 2rem;
  }

  .page-about .about-timeline__item::before {
    left: 7rem;
  }

  .page-about .about-timeline__year {
    padding-right: 2rem;
  }

  .page-about .about-timeline__year-num {
    font-size: 1.75rem;
  }

  .page-about .about-timeline__year::after {
    width: 0.9rem;
    height: 0.9rem;
    top: 1.8rem;
  }

  .page-about .about-metrics__item {
    padding: 1.75rem 1.25rem;
  }
}

@media (min-width: 960px) {
  .page-about .about-principles__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
  }

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

  .page-about .about-verification__panel {
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 3rem;
  }

  .page-about .about-team__inner {
    grid-template-columns: minmax(0, 1fr) 380px;
    gap: 3rem;
    align-items: start;
  }
}