/* ========== 品牌概况页专属样式 ========== */
.page-about {
  --about-cut-sm: 12px;
  --about-cut-lg: 18px;
  background: var(--color-deep);
}

/* ---------- 品牌定位区 ---------- */
.page-about__firm {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  display: flex;
  align-items: flex-end;
  min-height: 620px;
  padding-bottom: 56px;
}

.page-about__firm-art {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-about__firm-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}

.page-about__firm-shade {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(102deg, rgba(11, 19, 43, .96) 0%, rgba(11, 19, 43, .84) 38%, rgba(29, 53, 87, .58) 72%, rgba(230, 57, 70, .36) 100%);
}

.page-about__firm-layout {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding-top: 72px;
  padding-bottom: 56px;
}

.page-about__firm-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin: 0;
}

.page-about__firm-kicker::before {
  content: "";
  width: 30px;
  height: 3px;
  background: var(--color-red);
}

.page-about__firm-title {
  font-family: var(--font-heading);
  font-size: clamp(44px, 8vw, 88px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -.01em;
  color: var(--color-cream);
  margin: 16px 0 0;
}

.page-about__firm-lead {
  font-family: var(--font-heading);
  font-size: clamp(18px, 3vw, 26px);
  letter-spacing: .04em;
  color: var(--color-gold);
  margin: 4px 0 0;
}

.page-about__firm-copy {
  max-width: 640px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(241, 250, 238, .78);
  margin: 10px 0 0;
}

.page-about__firm-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
}

.page-about__firm-points li {
  position: relative;
  padding-left: 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-cream);
}

.page-about__firm-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 7px;
  height: 7px;
  transform: translateY(-50%) rotate(45deg);
  background: var(--color-red);
}

.page-about__firm-note {
  border-left: 2px solid var(--color-gold);
  padding: 8px 0 8px 16px;
  max-width: 260px;
}

.page-about__firm-note-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--color-smoke);
  margin: 0 0 10px;
}

.page-about__firm-note-copy {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-cream);
  margin: 0 0 14px;
}

.page-about__firm-note-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(244, 162, 97, .4);
  padding-bottom: 2px;
  transition: border-color .25s ease, color .25s ease;
}

.page-about__firm-note-link:hover {
  border-bottom-color: var(--color-gold);
  color: var(--color-cream);
}

.page-about__firm-stripe {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 34px;
  z-index: 3;
  background: repeating-linear-gradient(135deg, var(--color-red) 0 16px, transparent 16px 32px);
  opacity: .85;
  transform: skewY(-1deg);
  transform-origin: left bottom;
}

/* ---------- 发展历程时间线 ---------- */
.page-about__timeline {
  position: relative;
  margin-top: 44px;
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-gold) 0%, var(--color-red) 78%, transparent 100%);
  opacity: .38;
}

.page-about__milestone {
  position: relative;
  padding: 0 0 36px 44px;
}

.page-about__milestone:last-child {
  padding-bottom: 8px;
}

.page-about__milestone-dot {
  position: absolute;
  left: 0;
  top: 8px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-gold);
  box-shadow: 0 0 0 5px rgba(244, 162, 97, .18), 0 0 22px rgba(244, 162, 97, .5);
}

.page-about__milestone-dot::after {
  content: "";
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  border: 2px solid rgba(244, 162, 97, .35);
}

@media (prefers-reduced-motion: no-preference) {
  .page-about__milestone-dot {
    animation: page-about-dot-pulse 2.6s ease-out infinite;
  }
}

@keyframes page-about-dot-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(244, 162, 97, .5), 0 0 18px rgba(244, 162, 97, .4);
  }
  70% {
    box-shadow: 0 0 0 12px rgba(244, 162, 97, 0), 0 0 18px rgba(244, 162, 97, .4);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(244, 162, 97, 0), 0 0 18px rgba(244, 162, 97, .4);
  }
}

.page-about__milestone-card {
  clip-path: polygon(0 0, calc(100% - var(--about-cut-sm)) 0, 100% var(--about-cut-sm), 100% 100%, 0 100%);
  background: rgba(29, 53, 87, .62);
  box-shadow: inset 0 0 0 1px rgba(241, 250, 238, .08), 0 12px 30px rgba(11, 19, 43, .3);
  padding: 22px 22px 24px;
  transition: transform .3s ease, background .3s ease, box-shadow .3s ease;
}

.page-about__milestone-card:hover {
  transform: translateX(4px);
  background: rgba(29, 53, 87, .85);
  box-shadow: inset 0 0 0 1px rgba(244, 162, 97, .35), 0 14px 36px rgba(11, 19, 43, .4);
}

.page-about__milestone-card h3 {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--color-cream);
  margin: 14px 0 8px;
}

.page-about__milestone-card p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-smoke);
  margin: 0;
}

.page-about__journey-figure {
  margin: 40px 0 0 auto;
  max-width: 680px;
  border-left: 6px solid var(--color-red);
  background: rgba(11, 19, 43, .42);
  padding: 0 0 14px 14px;
}

.page-about__journey-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about__journey-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--color-smoke);
}

/* ---------- 数据服务能力 ---------- */
.page-about__metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 40px 0 46px;
}

.page-about__metric {
  position: relative;
  min-height: 118px;
  padding: 20px 14px 18px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  clip-path: polygon(0 0, calc(100% - var(--about-cut-sm)) 0, 100% var(--about-cut-sm), 100% 100%, 0 100%);
}

.page-about__metric--red {
  background: var(--color-red);
}

.page-about__metric--gold {
  background: var(--color-gold);
}

.page-about__metric--blue {
  background: var(--color-blue);
}

.page-about__metric--deep {
  background: var(--color-deep);
  box-shadow: inset 0 0 0 1px rgba(230, 57, 70, .5);
}

.page-about__metric-num {
  font-family: var(--font-heading);
  font-size: clamp(28px, 5vw, 46px);
  font-weight: 700;
  line-height: 1;
  display: block;
}

.page-about__metric--gold .page-about__metric-num {
  color: var(--color-deep);
}

.page-about__metric--red .page-about__metric-num,
.page-about__metric--blue .page-about__metric-num,
.page-about__metric--deep .page-about__metric-num {
  color: var(--color-cream);
}

.page-about__metric-label {
  margin-top: 8px;
  font-size: 13px;
  font-weight: 500;
  opacity: .78;
}

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

.page-about__cap-card {
  position: relative;
  min-height: 220px;
  padding: 30px 24px 28px;
  display: flex;
  flex-direction: column;
  background: rgba(29, 53, 87, .78);
  clip-path: polygon(0 0, calc(100% - var(--about-cut-sm)) 0, 100% var(--about-cut-sm), 100% 100%, 0 100%);
  box-shadow: inset 0 0 0 1px rgba(241, 250, 238, .08);
  transition: background .3s ease, box-shadow .3s ease;
}

.page-about__cap-card:hover {
  background: rgba(29, 53, 87, .94);
  box-shadow: inset 0 0 0 1px rgba(244, 162, 97, .35);
}

.page-about__cap-index {
  font-family: var(--font-heading);
  font-size: 32px;
  line-height: 1;
  color: var(--color-red);
  opacity: .85;
}

.page-about__cap-card h3 {
  font-family: var(--font-heading);
  font-size: 19px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-cream);
  margin: 18px 0 10px;
}

.page-about__cap-card p {
  font-size: 14px;
  line-height: 1.72;
  color: var(--color-smoke);
  margin: 0;
}

/* ---------- 团队与资质 ---------- */
.page-about__trust-layout {
  display: grid;
  gap: 40px;
  margin-top: 44px;
}

.page-about__trust-main h3 {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 600;
  color: var(--color-cream);
  margin: 0 0 14px;
}

.page-about__trust-main h3:not(:first-child) {
  margin-top: 34px;
}

.page-about__trust-main p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-smoke);
  margin: 0;
}

.page-about__trust-hint {
  border-left: 3px solid var(--color-gold);
  padding: 12px 16px;
  margin-top: 28px !important;
  background: rgba(244, 162, 97, .08);
  color: var(--color-cream) !important;
  font-size: 13px !important;
}

.page-about__trust-certs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  align-content: start;
}

.page-about__cert {
  background: rgba(11, 19, 43, .55);
  border: 1px solid rgba(241, 250, 238, .1);
  padding: 22px 16px 18px;
  margin: 0;
  text-align: center;
  transition: border-color .3s ease, transform .3s ease, background .3s ease;
}

.page-about__cert:hover {
  border-color: var(--color-gold);
  background: rgba(11, 19, 43, .8);
  transform: translateY(-4px);
}

.page-about__cert-emblem {
  width: 92px;
  height: 92px;
  margin: 0 auto 14px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--color-blue);
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-about__cert-emblem img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about__cert-emblem--audit {
  background: var(--color-gold);
  font-size: 42px;
  line-height: 1;
  color: var(--color-deep);
}

.page-about__cert-check {
  font-weight: 900;
}

.page-about__cert figcaption {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about__cert figcaption strong {
  font-family: var(--font-heading);
  font-size: 18px;
  letter-spacing: .06em;
  color: var(--color-cream);
}

.page-about__cert figcaption span {
  font-size: 12px;
  line-height: 1.5;
  color: var(--color-smoke);
}

/* ---------- 底部CTA ---------- */
.page-about__closing {
  position: relative;
  margin-top: 80px;
  padding: 72px 0 80px;
  background:
    repeating-linear-gradient(135deg, rgba(230, 57, 70, .16) 0 2px, transparent 2px 20px),
    linear-gradient(140deg, var(--color-deep) 12%, var(--color-blue) 100%);
  border-top: 3px solid rgba(244, 162, 97, .4);
}

.page-about__closing-inner {
  text-align: center;
  max-width: 720px;
}

.page-about__closing-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin: 0 0 12px;
}

.page-about__closing h2 {
  font-family: var(--font-heading);
  font-size: clamp(30px, 5vw, 48px);
  font-weight: 700;
  color: var(--color-cream);
  margin: 0 0 16px;
}

.page-about__closing-inner > p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--color-smoke);
  margin: 0 0 28px;
}

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

/* ---------- 响应式增强 ---------- */
@media (max-width: 400px) {
  .page-about__metrics {
    grid-template-columns: 1fr;
  }
  .page-about__trust-certs {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 768px) {
  .page-about__firm {
    min-height: 660px;
  }
  .page-about__firm-layout {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
    gap: 48px;
    padding-top: 100px;
    padding-bottom: 72px;
  }
  .page-about__firm-main {
    flex: 1 1 auto;
    padding-right: 40px;
  }
  .page-about__firm-note {
    flex: 0 0 220px;
    margin-bottom: 6px;
  }
  .page-about__metrics {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
  .page-about__metric {
    min-height: 142px;
    padding: 28px 20px 24px;
  }
  .page-about__cap-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
  .page-about__trust-layout {
    grid-template-columns: 1.3fr 1fr;
    gap: 60px;
  }
  .page-about__journey-figure {
    margin-top: 56px;
  }
}

@media (min-width: 992px) {
  .page-about__milestone-card {
    clip-path: polygon(0 0, calc(100% - var(--about-cut-lg)) 0, 100% var(--about-cut-lg), 100% 100%, 0 100%);
    padding: 24px 26px 26px;
  }
  .page-about__cap-card {
    clip-path: polygon(0 0, calc(100% - var(--about-cut-lg)) 0, 100% var(--about-cut-lg), 100% 100%, 0 100%);
  }
  .page-about__closing {
    padding: 88px 0 96px;
  }
}