/* ===== 品牌概况页 · 页面专属样式 ===== */
.page-about {
  --about-line: rgba(192, 192, 192, 0.22);
  --about-chip: rgba(201, 169, 97, 0.08);
  padding-bottom: 96px;
}

/* 面包屑 */
.page-about .breadcrumbs {
  padding-top: 24px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--c-silver);
}

.page-about .breadcrumbs a {
  color: var(--c-gold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-bottom-color 0.25s ease, color 0.25s ease;
}

.page-about .breadcrumbs a:hover {
  color: var(--c-gold-bright);
  border-bottom-color: var(--c-gold);
}

/* 锚点定位偏移 */
.page-about #milestones,
.page-about #qualifications,
.page-about #team {
  scroll-margin-top: 24px;
}

/* 首屏框景 */
.page-about .hero-frame {
  position: relative;
  margin-top: 20px;
  border: 1px solid var(--about-line);
  background:
    linear-gradient(135deg, var(--about-chip), transparent 46%),
    var(--c-dark);
  padding: 36px 22px 34px;
  clip-path: polygon(0 0, calc(100% - 32px) 0, 100% 32px, 100% 100%, 32px 100%, 0 calc(100% - 32px));
}

.page-about .hero-frame::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 44px;
  bottom: 44px;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-gold), rgba(201, 169, 97, 0.1));
  pointer-events: none;
}

.page-about .hero-frame::after {
  content: "";
  position: absolute;
  right: 18px;
  bottom: 18px;
  width: 7px;
  height: 7px;
  background: var(--c-gold);
  transform: rotate(45deg);
  pointer-events: none;
}

.page-about .hero-frame__meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding-left: 22px;
  padding-bottom: 14px;
  font-family: var(--ff-head);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-gold);
  text-transform: uppercase;
  border-bottom: 1px solid var(--about-line);
}

.page-about .hero-frame h1 {
  font-family: var(--ff-head);
  font-size: clamp(23px, 4.6vw, 38px);
  line-height: 1.3;
  letter-spacing: var(--ls-head);
  color: var(--c-cream);
  margin: 18px 0 14px;
  max-width: 720px;
}

.page-about .about-hero__lead {
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-silver);
  max-width: 660px;
  margin: 0 0 22px;
}

.page-about .about-hero__anchors {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.page-about .about-hero__anchors a {
  display: inline-block;
  padding: 6px 12px;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--c-silver);
  background: var(--c-black);
  border: 1px solid var(--about-line);
  text-decoration: none;
  clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
  transition: color 0.25s ease, border-color 0.25s ease;
}

.page-about .about-hero__anchors a:hover {
  color: var(--c-gold-bright);
  border-color: var(--c-gold);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* 关键数据 */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 40px;
}

.page-about .stat-block {
  position: relative;
  background: var(--c-dark);
  border-left: 2px solid var(--c-gold);
  padding: 22px 18px;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .stat-block:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.35);
}

.page-about .stat-block:first-child {
  border-left-color: var(--c-red);
}

.page-about .stat-num {
  display: block;
  font-family: var(--ff-head);
  font-size: 26px;
  line-height: 1.1;
  letter-spacing: var(--ls-head);
  color: var(--c-gold-bright);
}

.page-about .stat-block:first-child .stat-num {
  color: var(--c-cream);
}

.page-about .stat-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: var(--ls-body);
  color: var(--c-silver);
}

/* 章节头 */
.page-about .section-head {
  margin-top: 72px;
  margin-bottom: 32px;
  border-left: 3px solid var(--c-gold);
  padding-left: 16px;
}

.page-about .section-label {
  display: inline-block;
  font-family: var(--ff-head);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--c-red);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.page-about .section-title {
  font-family: var(--ff-head);
  font-size: 28px;
  line-height: 1.25;
  letter-spacing: var(--ls-head);
  color: var(--c-cream);
  margin: 0 0 8px;
}

.page-about .section-sub {
  font-size: 15px;
  line-height: 1.6;
  color: var(--c-silver);
  max-width: 560px;
  margin: 0;
}

/* 发展历程 */
.page-about .journey-grid {
  display: grid;
  gap: 36px;
}

.page-about .journey-visual {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--about-line);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
}

.page-about .journey-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 10, 10, 0.05), rgba(10, 10, 10, 0.55));
  pointer-events: none;
}

.page-about .journey-visual__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-about .journey-visual__curve {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.page-about .journey-visual__tag {
  position: absolute;
  left: 14px;
  bottom: 14px;
  z-index: 2;
  font-family: var(--ff-head);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-cream);
  background: rgba(10, 10, 10, 0.72);
  border: 1px solid rgba(201, 169, 97, 0.6);
  padding: 6px 10px;
  clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
}

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

.page-about .timeline::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 25px;
  width: 2px;
  transform: skewX(-18deg);
  background: linear-gradient(to bottom, var(--c-gold) 0%, var(--c-silver) 70%, rgba(192, 192, 192, 0.12) 100%);
}

.page-about .timeline-item {
  position: relative;
  padding-left: 68px;
  margin-bottom: 24px;
}

.page-about .timeline-item:last-child {
  margin-bottom: 0;
}

.page-about .timeline-item__year {
  position: absolute;
  left: 0;
  top: 12px;
  z-index: 2;
  min-width: 50px;
  padding: 6px 8px;
  text-align: center;
  font-family: var(--ff-head);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--c-gold-bright);
  background: var(--c-black);
  border: 1px solid var(--c-gold);
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  transition: background 0.3s ease, color 0.3s ease, transform 0.3s ease;
}

.page-about .timeline-item:hover .timeline-item__year {
  background: var(--c-gold);
  color: var(--c-black);
  transform: translateY(-2px);
}

.page-about .timeline-item__body {
  background: var(--c-dark);
  border: 1px solid var(--about-line);
  border-left: 2px solid var(--c-gold);
  padding: 18px 16px 16px;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-about .timeline-item:hover .timeline-item__body {
  border-color: rgba(201, 169, 97, 0.6);
  transform: translateX(4px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.32);
}

.page-about .timeline-item:last-child .timeline-item__body {
  background: linear-gradient(135deg, rgba(201, 169, 97, 0.14), var(--c-dark) 65%);
  border-left-color: var(--c-gold);
}

.page-about .timeline-item__body h3 {
  font-family: var(--ff-head);
  font-size: 17px;
  line-height: 1.35;
  letter-spacing: var(--ls-head);
  color: var(--c-cream);
  margin: 0 0 8px;
}

.page-about .timeline-item__body p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-silver);
  margin: 0;
}

/* 资质认证 */
.page-about .about-qualifications {
  margin-top: 72px;
  padding: 56px 0 48px;
  background:
    linear-gradient(120deg, var(--about-chip), transparent 48%),
    repeating-linear-gradient(45deg, rgba(201, 169, 97, 0.025) 0 1px, transparent 1px 14px),
    var(--c-black);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-qualifications .section-head {
  margin-top: 0;
}

.page-about .qualification-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-about .qualification-card {
  position: relative;
  padding: 26px 20px 20px;
  background: var(--c-dark);
  border: 1px solid var(--about-line);
  border-top: 2px solid var(--c-gold);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.page-about .qualification-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.4);
  border-color: rgba(201, 169, 97, 0.65);
}

.page-about .qualification-card:nth-child(3) {
  border-top-color: var(--c-red);
}

.page-about .qualification-card__index {
  position: absolute;
  top: 12px;
  right: 14px;
  font-family: var(--ff-head);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: rgba(192, 192, 192, 0.4);
}

.page-about .qualification-card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: 14px;
}

.page-about .qualification-card__icon svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-about .qualification-card h3 {
  font-family: var(--ff-head);
  font-size: 17px;
  line-height: 1.35;
  letter-spacing: var(--ls-head);
  color: var(--c-cream);
  margin: 0 0 8px;
}

.page-about .qualification-card p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--c-silver);
  margin: 0;
}

.page-about .qualification-wall {
  display: grid;
  gap: 20px;
  align-items: center;
  margin-top: 32px;
}

.page-about .qualification-wall img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--about-line);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
}

.page-about .qualification-wall__text {
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-silver);
  border-left: 2px solid var(--c-gold);
  padding-left: 16px;
  margin: 0;
}

/* 团队与组织 */
.page-about .team-layout {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-about .team-media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--about-line);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
}

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

.page-about .team-media__tag {
  position: absolute;
  right: 12px;
  bottom: 12px;
  z-index: 2;
  font-family: var(--ff-head);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-gold-bright);
  background: rgba(10, 10, 10, 0.78);
  border: 1px solid rgba(201, 169, 97, 0.55);
  padding: 6px 10px;
  clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
}

.page-about .team-content {
  display: grid;
  gap: 14px;
}

.page-about .team-fact {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--c-dark);
  border: 1px solid var(--about-line);
  border-left: 2px solid var(--c-gold);
  padding: 18px 16px;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.page-about .team-fact:hover {
  transform: translateX(4px);
  border-color: rgba(201, 169, 97, 0.6);
}

.page-about .team-fact__num {
  flex-shrink: 0;
  min-width: 56px;
  font-family: var(--ff-head);
  font-size: 26px;
  line-height: 1.15;
  letter-spacing: var(--ls-head);
  color: var(--c-gold-bright);
}

.page-about .team-fact__body h3 {
  font-family: var(--ff-head);
  font-size: 15px;
  line-height: 1.4;
  letter-spacing: var(--ls-head);
  color: var(--c-cream);
  margin: 2px 0 6px;
}

.page-about .team-fact__body p {
  font-size: 14px;
  line-height: 1.62;
  color: var(--c-silver);
  margin: 0;
}

.page-about .team-roles {
  display: grid;
  gap: 10px;
  margin-top: 6px;
}

.page-about .team-role {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--c-dark);
  border: 1px solid var(--about-line);
  border-left: 2px solid var(--c-gold);
  padding: 10px 14px;
  transition: border-color 0.25s ease;
}

.page-about .team-role:hover {
  border-color: rgba(201, 169, 97, 0.6);
}

.page-about .team-role__code {
  flex-shrink: 0;
  min-width: 40px;
  font-family: var(--ff-head);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--c-gold-bright);
}

.page-about .team-role__desc {
  font-size: 13px;
  line-height: 1.5;
  color: var(--c-silver);
}

/* 底部 CTA */
.page-about .about-cta {
  margin-top: 72px;
}

.page-about .about-cta__inner {
  position: relative;
  background:
    linear-gradient(135deg, rgba(201, 169, 97, 0.1), transparent 55%),
    var(--c-dark);
  border: 1px solid var(--about-line);
  padding: 40px 22px;
  text-align: center;
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
}

.page-about .about-cta__inner::after {
  content: "";
  position: absolute;
  bottom: 14px;
  left: 14px;
  width: 52px;
  height: 2px;
  transform: skewX(-20deg);
  background: var(--c-gold);
}

.page-about .about-cta__inner h2 {
  font-family: var(--ff-head);
  font-size: 24px;
  line-height: 1.3;
  letter-spacing: var(--ls-head);
  color: var(--c-cream);
  margin: 0 0 12px;
}

.page-about .about-cta__inner p {
  font-size: 15px;
  line-height: 1.65;
  color: var(--c-silver);
  max-width: 520px;
  margin: 0 auto 26px;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

/* ===== 平板端适配 ===== */
@media (min-width: 768px) {
  .page-about .hero-frame {
    padding: 52px 40px 46px;
  }

  .page-about .about-hero__lead {
    font-size: 17px;
  }

  .page-about .about-stats {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 56px;
  }

  .page-about .stat-num {
    font-size: 30px;
  }

  .page-about .section-head {
    margin-top: 88px;
  }

  .page-about .section-title {
    font-size: 32px;
  }

  .page-about .journey-grid {
    grid-template-columns: 5fr 7fr;
    gap: 44px;
    align-items: start;
  }

  .page-about .journey-visual {
    position: sticky;
    top: 24px;
  }

  .page-about .timeline-item {
    padding-left: 80px;
  }

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

  .page-about .qualification-wall {
    grid-template-columns: 5fr 7fr;
    gap: 36px;
    margin-top: 40px;
  }

  .page-about .team-layout {
    grid-template-columns: 5fr 7fr;
    gap: 44px;
  }

  .page-about .about-cta__inner {
    padding: 52px 40px 48px;
  }
}

/* ===== 桌面端适配 ===== */
@media (min-width: 1024px) {
  .page-about .qualification-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}