/* ===== 品牌故事页专属样式 ===== */
.page-about {
  --about-grid: rgba(160, 176, 192, 0.09);
  --about-lime-soft: rgba(57, 255, 20, 0.14);
  --about-orange-soft: rgba(255, 107, 53, 0.14);
  background: var(--c-ink);
  color: var(--c-white);
  overflow-x: hidden;
}

.page-about [data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.page-about [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- 首屏 ---------- */
.page-about__hero {
  position: relative;
  padding: 28px 0 56px;
  background:
    radial-gradient(620px 400px at 94% 0%, var(--about-lime-soft) 0%, transparent 62%),
    linear-gradient(150deg, var(--c-deep) 0%, var(--c-ink) 74%);
  isolation: isolate;
}

.page-about__hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--about-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to right, transparent 0%, #000 46%, #000 78%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, #000 46%, #000 78%, transparent 100%);
}

.page-about__hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background: repeating-linear-gradient(-45deg, var(--c-lime) 0 14px, var(--c-orange) 14px 28px);
  z-index: 2;
}

.page-about__hero .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 26px;
  color: var(--c-muted);
  font-size: 14px;
}

.page-about__hero .breadcrumb a {
  color: var(--c-muted);
  text-decoration: none;
  transition: color 0.3s var(--ease);
}

.page-about__hero .breadcrumb a:hover {
  color: var(--c-lime);
}

.page-about__hero .breadcrumb__sep {
  opacity: 0.5;
}

.page-about__hero .breadcrumb [aria-current="page"] {
  color: var(--c-white);
}

.page-about__hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  align-items: center;
}

.page-about__hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-lime);
  margin-bottom: 16px;
}

.page-about__hero-tag::before {
  content: "";
  flex-shrink: 0;
  width: 30px;
  height: 2px;
  background: var(--c-lime);
  box-shadow: 0 0 12px var(--c-lime);
}

.page-about .page-title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(34px, 7vw, 62px);
  line-height: 1.06;
  letter-spacing: 0.02em;
  color: var(--c-white);
  margin: 0;
}

.page-about .page-title__sub {
  display: block;
  margin-top: 12px;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 14px;
  letter-spacing: 0.32em;
  color: var(--c-muted);
}

.page-about .page-lead {
  max-width: 56ch;
  margin: 18px 0 0;
  color: var(--c-muted);
  font-size: 16px;
  line-height: 1.82;
}

.page-about__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about__hero-media {
  position: relative;
  transform: rotate(-0.6deg);
}

.page-about__hero-img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 6px 26px 6px 26px;
  box-shadow: var(--shadow);
}

.page-about__hero-badge {
  position: absolute;
  right: 14px;
  bottom: 18px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: rgba(6, 13, 24, 0.92);
  border: 1px solid rgba(57, 255, 20, 0.45);
  border-radius: 4px 14px 4px 14px;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.45);
  color: var(--c-muted);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-about__hero-badge strong {
  color: var(--c-lime);
  font-size: 16px;
}

.page-about__hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-lime);
  animation: page-about__pulse 1.8s ease-out infinite;
}

@keyframes page-about__pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(57, 255, 20, 0.45);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(57, 255, 20, 0);
  }
}

.page-about__hero-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid rgba(160, 176, 192, 0.16);
}

.page-about__strip-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-left: 12px;
  border-left: 3px solid var(--c-orange);
}

.page-about__strip-num {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 26px;
  line-height: 1.2;
  color: var(--c-white);
}

.page-about__strip-label {
  font-size: 13px;
  color: var(--c-muted);
}

/* ---------- 章节标题 ---------- */
.page-about__section-head {
  position: relative;
  max-width: 720px;
  margin-bottom: 36px;
  padding-left: 20px;
}

.page-about__section-head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 4px;
  background: linear-gradient(var(--c-lime) 0 48%, var(--c-orange) 48%);
}

.page-about .meta-label {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--c-lime);
  margin: 0;
}

.page-about__section-head .section-title {
  font-family: var(--font-head);
  font-size: clamp(30px, 4.6vw, 44px);
  line-height: 1.12;
  letter-spacing: 0.03em;
  margin: 8px 0 12px;
  color: var(--c-white);
}

.page-about__section-head .section-lead {
  margin: 0;
  color: var(--c-muted);
  font-size: 16px;
  line-height: 1.75;
}

/* ---------- 品牌使命 ---------- */
.page-about__mission {
  position: relative;
  padding: 64px 0;
  background: linear-gradient(180deg, var(--c-ink) 0%, var(--c-deep) 100%);
}

.page-about__mission::before {
  content: "08";
  position: absolute;
  right: 3%;
  top: 40px;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 110px;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(57, 255, 20, 0.16);
  pointer-events: none;
}

.page-about__mission-layout {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
}

.page-about__mission-copy p {
  margin: 0 0 14px;
  color: rgba(255, 255, 255, 0.86);
  line-height: 1.86;
  font-size: 16px;
}

.page-about__mission-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about__mission-list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 15px;
  color: var(--c-muted);
  line-height: 1.7;
}

.page-about__mission-step {
  flex-shrink: 0;
  min-width: 68px;
  padding: 3px 8px;
  text-align: center;
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-ink);
  background: var(--c-lime);
  border-radius: 3px 10px 3px 10px;
}

.page-about__mission-principles {
  display: grid;
  gap: 14px;
}

.page-about__principle-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: center;
  padding: 20px 22px;
  background: linear-gradient(150deg, var(--c-panel) 0%, var(--c-ink) 100%);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 6px 18px 6px 18px;
  position: relative;
  overflow: hidden;
}

.page-about__principle-card::after {
  content: "";
  position: absolute;
  right: -22px;
  top: -22px;
  transform: rotate(45deg);
  width: 60px;
  height: 60px;
  background: rgba(57, 255, 20, 0.06);
}

.page-about__principle-card p {
  margin: 0;
  color: var(--c-muted);
  font-size: 15px;
  line-height: 1.7;
}

.page-about .data-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 52px;
  padding: 5px 10px;
  background: var(--c-lime);
  color: var(--c-ink);
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  border-radius: 3px 12px 3px 12px;
  white-space: nowrap;
}

.page-about .data-chip--orange {
  background: var(--c-orange);
}

.page-about .data-chip--line {
  background: transparent;
  color: var(--c-lime);
  border: 1px solid var(--c-lime);
}

/* ---------- 发展里程碑 ---------- */
.page-about__milestones {
  position: relative;
  padding: 64px 0 72px;
  background: linear-gradient(180deg, var(--c-deep) 0%, var(--c-ink) 100%);
}

.page-about__timeline {
  position: relative;
}

.page-about__timeline-track {
  position: absolute;
  top: 8px;
  bottom: 46px;
  left: 29px;
  width: 2px;
  background: repeating-linear-gradient(to bottom, var(--c-lime) 0 7px, transparent 7px 15px);
  opacity: 0.65;
}

.page-about__timeline-arrow {
  position: absolute;
  left: 21px;
  bottom: 24px;
  width: 16px;
  height: 16px;
  filter: drop-shadow(0 2px 6px rgba(255, 107, 53, 0.55));
}

.page-about__milestone {
  position: relative;
  display: grid;
  grid-template-columns: 60px 18px 1fr;
  margin-bottom: 28px;
}

.page-about__milestone-year {
  grid-column: 1;
  align-self: start;
  justify-self: end;
  padding-top: 6px;
  text-align: right;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 30px;
  line-height: 1;
  color: var(--c-lime);
  text-shadow: 0 0 14px rgba(57, 255, 20, 0.35);
}

.page-about__milestone-card {
  grid-column: 3;
  position: relative;
  padding: 20px 20px 22px;
  background: linear-gradient(150deg, rgba(30, 42, 58, 0.96) 0%, rgba(6, 13, 24, 0.96) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px 20px 6px 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease);
}

.page-about__milestone-card:hover {
  transform: translateY(-3px);
  border-color: rgba(57, 255, 20, 0.35);
}

.page-about__milestone-card::before {
  content: "";
  position: absolute;
  top: 26px;
  left: -54px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-orange);
  border: 2px solid var(--c-ink);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.2);
}

.page-about__milestone-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 24px;
  letter-spacing: 0.02em;
  color: var(--c-white);
}

.page-about__milestone-card p {
  margin: 0;
  color: var(--c-muted);
  font-size: 15px;
  line-height: 1.72;
}

.page-about__milestone-tag {
  display: inline-block;
  margin-top: 12px;
  padding: 4px 10px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-orange);
  border: 1px solid rgba(255, 107, 53, 0.45);
  border-radius: 3px 10px 3px 10px;
}

.page-about__timeline-image {
  display: grid;
  gap: 18px;
  align-items: center;
  margin-top: 44px;
  padding: 18px;
  background: var(--c-panel);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 8px 22px 8px 22px;
}

.page-about__timeline-img {
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: cover;
  border-radius: 4px 16px 4px 16px;
}

.page-about__timeline-image p {
  margin: 0;
  padding-left: 14px;
  border-left: 3px solid var(--c-orange);
  color: var(--c-muted);
  font-size: 14px;
  line-height: 1.8;
}

.page-about__timeline-image strong {
  color: var(--c-lime);
  font-family: var(--font-data);
  font-weight: 700;
}

/* ---------- 技术实力 ---------- */
.page-about__tech {
  padding: 64px 0;
}

.page-about__tech-grid {
  display: grid;
  gap: 30px;
}

.page-about__tech-metrics {
  display: grid;
  gap: 14px;
}

.page-about__tech-card {
  position: relative;
  padding: 24px 22px;
  background: linear-gradient(150deg, var(--c-deep) 0%, var(--c-ink) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px 20px 8px 20px;
  overflow: hidden;
}

.page-about__tech-card::after {
  content: "";
  position: absolute;
  right: -30px;
  top: -30px;
  width: 64px;
  height: 64px;
  transform: rotate(45deg);
  background: var(--about-lime-soft);
}

.page-about__tech-card .data-number {
  display: inline-block;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 38px;
  line-height: 1;
  color: var(--c-lime);
}

.page-about__tech-card .data-chip {
  margin-left: 10px;
  vertical-align: 5px;
}

.page-about__tech-card p {
  margin: 10px 0 0;
  color: var(--c-muted);
  font-size: 15px;
  line-height: 1.72;
}

.page-about__tech-visual {
  position: relative;
}

.page-about__tech-img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: cover;
  border-radius: 6px 22px 6px 22px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  box-shadow: var(--shadow);
}

.page-about__tech-note {
  position: relative;
  margin-top: 16px;
  padding: 20px 22px;
  background: var(--c-panel);
  border-left: 4px solid var(--c-lime);
  border-radius: 4px 16px 4px 16px;
}

.page-about__tech-note h3 {
  margin: 6px 0 8px;
  font-family: var(--font-head);
  font-size: 24px;
  color: var(--c-white);
}

.page-about__tech-note p {
  margin: 0;
  color: var(--c-muted);
  font-size: 14px;
  line-height: 1.78;
}

.page-about__tech-note .meta-label {
  color: var(--c-lime);
}

/* ---------- 服务规模 ---------- */
.page-about__scale {
  position: relative;
  padding: 64px 0 80px;
  background: linear-gradient(180deg, var(--c-ink) 0%, var(--c-deep) 100%);
}

.page-about__scale-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about__scale-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 22px 18px;
  background: rgba(30, 42, 58, 0.66);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 5px 18px 5px 18px;
  overflow: hidden;
}

.page-about__scale-card::after {
  content: "";
  position: absolute;
  bottom: 0;
  right: 0;
  width: 46px;
  height: 46px;
  border-left: 2px solid rgba(255, 107, 53, 0.28);
  transform: skewX(-28deg);
  transform-origin: right bottom;
}

.page-about__scale-num {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 38px;
  line-height: 1;
  color: var(--c-lime);
}

.page-about__scale-label {
  font-family: var(--font-head);
  font-size: 18px;
  letter-spacing: 0.04em;
  color: var(--c-white);
  margin-top: 4px;
}

.page-about__scale-desc {
  font-size: 13px;
  line-height: 1.55;
  color: var(--c-muted);
  margin-top: 4px;
}

/* ---------- 结语 ---------- */
.page-about__closing {
  padding: 60px 0 84px;
}

.page-about__closing-panel {
  position: relative;
  padding: 40px 24px 44px;
  text-align: center;
  background:
    linear-gradient(135deg, rgba(57, 255, 20, 0.08) 0%, transparent 48%),
    var(--c-deep);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 10px 28px 10px 28px;
  overflow: hidden;
}

.page-about__closing-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: repeating-linear-gradient(-45deg, var(--c-orange) 0 16px, var(--c-lime) 16px 32px);
}

.page-about__closing-panel h2 {
  font-family: var(--font-head);
  font-size: clamp(26px, 4vw, 38px);
  margin: 0 0 12px;
  color: var(--c-white);
}

.page-about__closing-panel p {
  max-width: 62ch;
  margin: 0 auto 24px;
  color: var(--c-muted);
  line-height: 1.8;
  font-size: 15px;
}

.page-about__closing-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about__hero-strip {
    grid-template-columns: repeat(4, 1fr);
  }

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

  .page-about__timeline-image {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

@media (min-width: 900px) {
  .page-about__hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 48px;
  }

  .page-about__mission-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 48px;
  }

  .page-about__tech-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 48px;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-about__hero {
    padding: 44px 0 72px;
  }

  .page-about__hero-strip {
    margin-top: 52px;
  }

  .page-about__timeline {
    padding-top: 10px;
  }

  .page-about__timeline-track {
    left: 50%;
    transform: translateX(-50%);
    top: 10px;
    bottom: 52px;
  }

  .page-about__timeline-arrow {
    left: calc(50% - 8px);
    bottom: 28px;
  }

  .page-about__milestone {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 140px minmax(0, 1fr);
    margin-bottom: 56px;
  }

  .page-about__milestone-year {
    grid-column: 2;
    grid-row: 1;
    justify-self: center;
    align-self: start;
    font-size: 36px;
    padding-top: 10px;
    text-align: center;
  }

  .page-about__milestone-card {
    grid-column: 3;
    grid-row: 1;
    max-width: 460px;
  }

  .page-about__milestone-card::before {
    left: -76px;
    top: 30px;
  }

  .page-about__milestone:nth-child(even) .page-about__milestone-card {
    grid-column: 1;
    grid-row: 1;
    justify-self: end;
  }

  .page-about__milestone:nth-child(even) .page-about__milestone-card::before {
    left: auto;
    right: -76px;
  }

  .page-about__milestone:last-child {
    margin-bottom: 0;
  }

  .page-about__milestone-tag {
    margin-top: 16px;
  }
}