/* ===== 品牌档案页 · 页面专属样式 ===== */
.page-about {
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
}
.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}
.page-about a {
  transition: color 0.25s ease;
}

/* ---------- 面包屑 ---------- */
.page-about .about-hero .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 0 18px;
  font-size: 14px;
  max-width: calc(var(--container-w) + 96px);
  margin-inline: auto;
}
.page-about .about-hero .breadcrumbs a {
  color: var(--teal);
  text-decoration: none;
  font-weight: 600;
}
.page-about .about-hero .breadcrumbs a:hover {
  color: var(--brand-hover);
}
.page-about .about-hero .breadcrumbs [aria-current="page"] {
  color: var(--ink);
  font-weight: 600;
}
.page-about .breadcrumbs-sep {
  color: var(--line);
  pointer-events: none;
}

/* ---------- 首屏英雄区 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 72px 20px 64px;
  background:
    radial-gradient(circle at 82% 18%, rgba(255, 107, 53, 0.16), transparent 28%),
    linear-gradient(160deg, var(--paper) 0%, #FFF4EC 56%, var(--peach) 100%);
  border-bottom: 2px solid var(--line);
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 6px;
  background: linear-gradient(90deg, var(--brand) 0%, var(--gold) 46%, var(--teal) 100%);
}
.page-about .about-hero-grid {
  max-width: calc(var(--container-w) + 96px);
  margin-inline: auto;
  display: grid;
  gap: 36px;
  align-items: end;
}
.page-about .about-hero-main h1 {
  font-family: var(--font-head);
  font-size: clamp(46px, 7.5vw, 88px);
  line-height: 0.96;
  letter-spacing: 0.02em;
  margin: 10px 0 18px;
  text-shadow: 4px 4px 0 var(--line);
}
.page-about .about-hero-lead {
  max-width: 34em;
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink);
  margin: 0 0 20px;
}
.page-about .about-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-about .about-hero-panel {
  position: relative;
  background: var(--espresso);
  color: var(--paper);
  border: 2px solid var(--ink);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  box-shadow: 10px 10px 0 rgba(255, 107, 53, 0.32);
}
.page-about .about-hero-panel::after {
  content: "";
  position: absolute;
  right: 18px;
  top: -10px;
  width: 46px;
  height: 46px;
  background:
    linear-gradient(135deg, transparent 25%, var(--gold) 25% 50%, transparent 50% 75%, var(--gold) 75%);
  background-size: 12px 12px;
  opacity: 0.6;
  border-radius: 4px;
}
.page-about .about-hero-panel-mark {
  display: inline-block;
  background: var(--gold);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
}
.page-about .about-hero-panel-text {
  font-family: var(--font-head);
  font-size: 24px;
  line-height: 1.3;
  margin: 0 0 12px;
  color: var(--paper);
}
.page-about .about-hero-panel-text strong {
  color: var(--brand);
}
.page-about .about-hero-panel-note {
  font-size: 14px;
  line-height: 1.6;
  color: rgba(247, 243, 239, 0.72);
  margin: 0;
}

/* ---------- 章节共用元素 ---------- */
.page-about .about-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand-hover);
}
.page-about .about-eyebrow::before {
  content: "";
  width: 26px;
  height: 3px;
  background: currentColor;
  border-radius: 2px;
}
.page-about .about-section-title {
  font-family: var(--font-head);
  font-size: clamp(28px, 4.4vw, 44px);
  line-height: 1.1;
  margin: 0 0 18px;
  letter-spacing: 0.01em;
}

/* ---------- 品牌概况 ---------- */
.page-about .about-overview {
  max-width: var(--container-w);
  margin-inline: auto;
  padding: 68px 20px;
}
.page-about .about-overview-grid {
  display: grid;
  gap: 36px;
  align-items: center;
}
.page-about .about-lead-text {
  font-size: 18px;
  line-height: 1.75;
  margin: 0 0 14px;
}
.page-about .about-overview p {
  margin: 0 0 14px;
  line-height: 1.7;
}
.page-about .about-overview-list {
  list-style: none;
  margin: 18px 0 24px;
  padding: 0;
}
.page-about .about-overview-list li {
  position: relative;
  padding: 0 0 10px 26px;
  font-size: 15px;
  line-height: 1.6;
}
.page-about .about-overview-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 10px;
  height: 10px;
  background: var(--brand);
  transform: rotate(45deg);
  box-shadow: 2px 2px 0 var(--gold);
}
.page-about .about-overview-link a {
  color: var(--teal);
  font-weight: 600;
  text-underline-offset: 4px;
  text-decoration: underline;
}
.page-about .about-overview-link a:hover {
  color: var(--brand-hover);
}
.page-about .about-overview-art {
  margin: 0;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: 12px 12px 0 var(--line);
  background: var(--peach);
  padding: 10px 10px 6px;
}
.page-about .about-overview-art img {
  width: 100%;
  border-radius: calc(var(--radius) - 6px);
}
.page-about .about-overview-art figcaption {
  padding: 12px 4px 8px;
  font-size: 12px;
  color: var(--ink);
  letter-spacing: 0.05em;
}

/* ---------- 发展历程 ---------- */
.page-about .about-journey {
  background: linear-gradient(180deg, var(--peach) 0%, #FFF4EC 100%);
  border-block: 2px solid var(--line);
  padding: 68px 20px 76px;
}
.page-about .about-journey-layout {
  max-width: var(--container-w);
  margin-inline: auto;
  display: grid;
  gap: 40px;
}
.page-about .about-journey-intro {
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  margin: 0;
}
.page-about .about-journey-figure {
  margin: 22px 0 0;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper);
}
.page-about .about-journey-figure img {
  width: 100%;
}
.page-about .about-journey-figure figcaption {
  padding: 10px 14px;
  font-size: 12px;
  color: var(--ink);
  border-top: 1px solid var(--line);
}
.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 4px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--brand) 0%, var(--gold) 58%, var(--teal) 100%);
}
.page-about .about-timeline-item {
  position: relative;
  margin: 0 0 26px;
  padding-left: 42px;
}
.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 18px;
  height: 18px;
  background: var(--paper);
  border: 4px solid var(--brand);
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--peach);
}
.page-about .about-timeline-card {
  position: relative;
  background: var(--paper);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  padding: 20px 20px 18px;
  box-shadow: 7px 7px 0 rgba(44, 44, 44, 0.08);
  transition: transform 0.25s var(--ease-snap), box-shadow 0.25s var(--ease-snap);
}
.page-about .about-timeline-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 10px 10px 0 var(--line);
}
.page-about .about-timeline-index {
  position: absolute;
  right: 18px;
  top: -13px;
  font-family: var(--font-head);
  font-size: 34px;
  line-height: 1;
  color: var(--peach);
  -webkit-text-stroke: 1.5px var(--brand);
  pointer-events: none;
}
.page-about .about-timeline-year {
  display: inline-block;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gold-dark);
  background: #FFFBF5;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  padding: 3px 12px;
  margin-bottom: 8px;
}
.page-about .about-timeline-card h3 {
  font-family: var(--font-head);
  font-size: 20px;
  letter-spacing: 0.02em;
  line-height: 1.3;
  margin: 0 0 8px;
}
.page-about .about-timeline-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink);
}

/* ---------- 服务能力 ---------- */
.page-about .about-capability {
  background: var(--espresso);
  color: var(--paper);
  padding: 76px 20px;
  position: relative;
  overflow: hidden;
}
.page-about .about-capability::before {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.35), transparent 70%);
}
.page-about .about-capability-inner {
  max-width: var(--container-w);
  margin-inline: auto;
  position: relative;
}
.page-about .about-capability .about-section-title {
  color: var(--paper);
}
.page-about .about-capability .about-eyebrow {
  color: var(--brand);
}
.page-about .about-capability .about-section-head > p:not(.about-eyebrow) {
  color: rgba(247, 243, 239, 0.72);
  max-width: 580px;
  margin: 0 0 32px;
}
.page-about .about-stats-grid {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}
.page-about .about-stat-card {
  position: relative;
  background: rgba(247, 243, 239, 0.04);
  border: 1px solid rgba(255, 107, 53, 0.55);
  border-radius: var(--radius);
  padding: 26px 22px 22px;
  overflow: hidden;
}
.page-about .about-stat-card::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--brand), var(--gold));
  opacity: 0.8;
}
.page-about .about-stat-num {
  display: block;
  font-family: var(--font-head);
  font-size: clamp(40px, 5.5vw, 58px);
  line-height: 1;
  color: var(--gold);
}
.page-about .about-stat-suffix {
  font-size: 0.5em;
  color: var(--brand);
  margin-left: 4px;
  vertical-align: super;
}
.page-about .about-stat-label {
  display: block;
  margin-top: 12px;
  font-size: 14px;
  color: var(--paper);
  opacity: 0.85;
}
.page-about .about-capability-bottom {
  display: grid;
  gap: 28px;
  margin-top: 52px;
}
.page-about .about-chart-card {
  margin: 0;
  background: var(--paper);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}
.page-about .about-chart-card img {
  width: 100%;
}
.page-about .about-chart-card figcaption {
  padding: 10px 14px;
  font-size: 12px;
  border-top: 1px solid var(--line);
  color: var(--ink);
}
.page-about .about-capability-notes {
  background: rgba(255, 215, 0, 0.07);
  border-left: 4px solid var(--gold);
  padding: 22px 22px 8px;
  border-radius: 0 var(--radius) var(--radius) 0;
}
.page-about .about-capability-notes h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 20px;
  color: var(--paper);
}
.page-about .about-capability-notes p {
  margin: 0 0 12px;
  color: rgba(247, 243, 239, 0.78);
  font-size: 15px;
  line-height: 1.65;
}
.page-about .about-capability-notes ul {
  margin: 0 0 10px;
  padding: 0;
  list-style: none;
}
.page-about .about-capability-notes li {
  position: relative;
  padding: 4px 0 4px 24px;
  font-size: 14px;
  color: var(--paper);
}
.page-about .about-capability-notes li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 12px;
  width: 8px;
  height: 8px;
  background: var(--gold);
  transform: rotate(45deg);
}

/* ---------- 资质与认证 ---------- */
.page-about .about-cert {
  padding: 76px 20px;
  background: var(--paper);
}
.page-about .about-cert-inner {
  max-width: var(--container-w);
  margin-inline: auto;
}
.page-about .about-cert-grid {
  display: grid;
  gap: 22px;
  margin-top: 34px;
  counter-reset: aboutCert;
}
.page-about .about-cert-card {
  position: relative;
  background: linear-gradient(180deg, var(--paper) 0%, #FFFBF5 100%);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  padding: 30px 24px 24px;
  box-shadow: 8px 8px 0 rgba(255, 107, 53, 0.16);
  counter-increment: aboutCert;
}
.page-about .about-cert-card::after {
  content: counter(aboutCert, decimal-leading-zero);
  position: absolute;
  top: -10px;
  right: 16px;
  font-family: var(--font-head);
  font-size: 42px;
  color: var(--peach);
  -webkit-text-stroke: 1.2px var(--brand);
  opacity: 0.9;
  pointer-events: none;
}
.page-about .about-cert-card h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 22px;
  letter-spacing: 0.02em;
}
.page-about .about-cert-value {
  display: inline-block;
  margin-top: 10px;
  font-family: var(--font-head);
  font-size: 34px;
  line-height: 1.1;
  color: var(--brand-hover);
  background: var(--peach);
  border: 1px dashed var(--brand);
  border-radius: var(--radius-sm);
  padding: 4px 14px;
}
.page-about .about-cert-card p:last-child {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink);
}
.page-about .about-cert-card a {
  color: var(--teal);
  font-weight: 600;
  text-underline-offset: 3px;
}
.page-about .about-cert-card a:hover {
  color: var(--brand-hover);
}
.page-about .about-cert-bottom {
  margin-top: 48px;
  background: var(--peach);
  border: 2px solid var(--ink);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  display: grid;
  gap: 22px;
}
.page-about .about-cert-bottom h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 22px;
}
.page-about .about-cert-bottom p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.7;
}
.page-about .about-device-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-about .about-device-tags span {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
}
.page-about .about-cert-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

/* ---------- 底部咨询区 ---------- */
.page-about .about-connect {
  background: var(--brand);
  color: var(--ink);
  padding: 64px 20px;
}
.page-about .about-connect-inner {
  max-width: var(--container-w);
  margin-inline: auto;
  display: grid;
  gap: 30px;
}
.page-about .about-connect .about-section-title {
  color: var(--ink);
}
.page-about .about-connect .about-eyebrow {
  color: var(--espresso);
}
.page-about .about-connect-inner > div:first-child p:last-child {
  font-size: 16px;
  line-height: 1.7;
  opacity: 0.78;
  max-width: 440px;
  margin: 0;
}
.page-about .about-connect-channels {
  display: grid;
  gap: 12px;
}
.page-about .about-connect-item {
  display: block;
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  padding: 14px 18px;
  border-radius: var(--radius);
  box-shadow: 6px 6px 0 rgba(44, 44, 44, 0.12);
  transition: background 0.25s ease, transform 0.25s ease;
}
.page-about .about-connect-item:hover {
  background: var(--espresso);
  transform: translate(2px, 2px);
}
.page-about .about-connect-note {
  font-size: 13px;
  line-height: 1.6;
  opacity: 0.7;
  margin: 4px 0 0;
}

/* ---------- 响应式升级 ---------- */
@media (min-width: 720px) {
  .page-about .about-stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-about .about-cert-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .about-connect-inner {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-about .about-hero {
    padding: 104px 32px 96px;
  }
  .page-about .about-hero-grid {
    grid-template-columns: 1.25fr 0.75fr;
    gap: 60px;
  }
  .page-about .about-hero-panel {
    padding: 34px 32px;
  }
  .page-about .about-hero-panel-text {
    font-size: 28px;
  }
  .page-about .about-overview {
    padding: 88px 32px;
  }
  .page-about .about-overview-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 56px;
  }
  .page-about .about-journey {
    padding: 88px 32px 96px;
  }
  .page-about .about-journey-layout {
    grid-template-columns: 0.72fr 1.28fr;
    gap: 56px;
  }
  .page-about .about-journey-head {
    position: sticky;
    top: 120px;
    align-self: start;
  }
  .page-about .about-capability {
    padding: 92px 32px;
  }
  .page-about .about-capability-bottom {
    grid-template-columns: 1.3fr 0.7fr;
    gap: 36px;
  }
  .page-about .about-cert {
    padding: 92px 32px;
  }
  .page-about .about-cert-bottom {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
  .page-about .about-connect {
    padding: 80px 32px;
  }
}