/* ===== 品牌档案页 · 专属样式 ===== */
.page-about {
  background-color: var(--navy);
  color: var(--off-white);
  overflow-x: hidden;
}

.page-about .about-section {
  padding: 3.5rem 0;
}

/* ---------- 首屏英雄区 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 1.5rem 0 3rem;
  border-bottom: 1px solid rgba(212, 175, 55, 0.25);
  background:
    linear-gradient(135deg, rgba(212, 175, 55, 0.12) 0%, transparent 42%),
    var(--navy);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--gold) 0 18px, transparent 18px 26px);
  opacity: 0.5;
  pointer-events: none;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 2.5rem;
  padding-top: 2rem;
}

.page-about .about-hero__lead {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--muted);
  margin: 1.25rem 0 1.75rem;
  max-width: 56ch;
}

.page-about .about-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-about .about-hero__console {
  background: var(--steel);
  border: 2px solid var(--gold);
  box-shadow: var(--shadow-hard);
  position: relative;
}

.page-about .about-hero__console::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--gold) 50%, transparent 50%);
  z-index: 2;
  pointer-events: none;
}

.page-about .about-hero__console-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1rem;
  border-bottom: 1px solid rgba(212, 175, 55, 0.3);
  font-family: var(--font-data);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .about-hero__console-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 8px rgba(57, 255, 20, 0.6);
}

.page-about .about-hero__console-version {
  margin-left: auto;
  color: var(--gold);
  font-weight: 700;
}

.page-about .about-hero__console-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.page-about .about-hero__console-cell {
  padding: 1.25rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  border-right: 1px solid rgba(212, 175, 55, 0.15);
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
}

.page-about .about-hero__console-cell:nth-child(2n) {
  border-right: none;
}

.page-about .about-hero__console-cell:nth-last-child(-n+2) {
  border-bottom: none;
}

.page-about .about-hero__console-num {
  font-family: var(--font-data);
  font-size: clamp(1.4rem, 5vw, 2.4rem);
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
}

.page-about .about-hero__console-desc {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-transform: uppercase;
}

/* ---------- 品牌沿革时间线 ---------- */
.page-about .about-timeline {
  position: relative;
}

.page-about .about-timeline__rail {
  position: relative;
  margin-top: 2.5rem;
  padding-left: 2.5rem;
}

.page-about .about-timeline__rail::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--gold) 0%, var(--purple) 55%, var(--neon) 100%);
  opacity: 0.8;
}

.page-about .about-timeline__item {
  position: relative;
  margin-bottom: 2.5rem;
}

.page-about .about-timeline__year {
  margin-bottom: 0.75rem;
  position: relative;
  z-index: 2;
}

.page-about .about-timeline__year::before {
  content: "";
  position: absolute;
  left: -2.5rem;
  top: 50%;
  width: 14px;
  height: 14px;
  transform: translateY(-50%);
  background: var(--navy);
  border: 3px solid var(--gold);
  border-radius: 50%;
  box-sizing: border-box;
}

.page-about .about-timeline__year span {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: var(--gold);
  background: rgba(212, 175, 55, 0.1);
  border: 1px solid rgba(212, 175, 55, 0.35);
  padding: 0.3rem 1rem;
  line-height: 1.2;
  transition: background 200ms ease-out, color 200ms ease-out;
}

.page-about .about-timeline__card {
  background: var(--steel);
  border: 1px solid rgba(212, 175, 55, 0.28);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.3);
  padding: 1.5rem;
  position: relative;
  z-index: 1;
  transition: border-color 200ms ease-out, transform 200ms ease-out;
}

.page-about .about-timeline__card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 3rem;
  height: 3rem;
  background: linear-gradient(135deg, transparent 50%, rgba(212, 175, 55, 0.14) 50%);
  pointer-events: none;
}

.page-about .about-timeline__item:hover .about-timeline__card {
  border-color: rgba(212, 175, 55, 0.65);
  transform: translateX(2px);
}

.page-about .about-timeline__card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.75rem;
}

.page-about .about-timeline__card-head h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.02em;
  flex: 1 1 auto;
}

.page-about .about-timeline__card p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 1rem;
}

.page-about .about-timeline__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.page-about .about-timeline__facts li {
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--off-white);
  background: rgba(106, 90, 205, 0.18);
  border: 1px solid rgba(106, 90, 205, 0.35);
  padding: 0.3rem 0.7rem;
  display: inline-block;
}

.page-about .about-timeline__item:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 3rem;
  bottom: -1.5rem;
  width: 70px;
  height: 5px;
  background: repeating-linear-gradient(-45deg, var(--gold) 0 4px, transparent 4px 8px);
  opacity: 0.35;
  z-index: 3;
  pointer-events: none;
}

.page-about .about-timeline__figure {
  margin: 2.5rem 0 0;
  border: 1px solid rgba(212, 175, 55, 0.3);
  background: var(--steel);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.3);
  padding: 0.75rem;
}

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

.page-about .about-timeline__figure figcaption {
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--muted);
  padding: 0.75rem 0.25rem 0.25rem;
  letter-spacing: 0.04em;
}

/* ---------- 数据能力概况 ---------- */
.page-about .about-data {
  background: linear-gradient(180deg, var(--navy) 0%, #0D2550 100%);
  border-top: 1px solid rgba(212, 175, 55, 0.2);
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

.page-about .about-data__layout {
  display: grid;
  gap: 2.5rem;
  margin-top: 2rem;
}

.page-about .about-data__lead {
  color: var(--muted);
  font-size: 1.0625rem;
  line-height: 1.8;
  margin-bottom: 2rem;
}

.page-about .about-data__metrics {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  margin-bottom: 2.25rem;
}

.page-about .about-data__metric-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.4rem;
}

.page-about .about-data__metric-head > span:first-child {
  font-size: 0.875rem;
  color: var(--off-white);
  font-weight: 500;
}

.page-about .about-data__metric-num {
  font-family: var(--font-data);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--gold);
}

.page-about .about-data__bar {
  height: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(212, 175, 55, 0.15);
}

.page-about .about-data__bar-fill {
  display: block;
  height: 100%;
  width: 85%;
  background: linear-gradient(90deg, var(--gold), var(--purple));
}

.page-about .about-data__bar-fill--full {
  width: 100%;
}

.page-about .about-data__bar-fill--half {
  width: 65%;
}

.page-about .about-data__checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.page-about .about-data__checklist li {
  display: flex;
  gap: 0.8rem;
  align-items: flex-start;
  background: rgba(31, 42, 68, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 1rem 1.1rem;
}

.page-about .about-data__checklist p {
  margin: 0;
  font-size: 0.925rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-data__checklist strong {
  color: var(--off-white);
  font-weight: 600;
}

.page-about .about-data__checkicon {
  flex: 0 0 auto;
  width: 1.25rem;
  height: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--neon);
  color: var(--neon);
  font-family: var(--font-data);
  font-size: 0.7rem;
}

.page-about .about-data__side {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.page-about .about-data__figure {
  margin: 0;
  border: 1px solid rgba(212, 175, 55, 0.28);
  padding: 0.65rem;
  background: var(--steel);
  box-shadow: var(--shadow-hard);
}

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

.page-about .about-data__figure figcaption {
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--muted);
  padding: 0.65rem 0.25rem 0.25rem;
  letter-spacing: 0.04em;
}

.page-about .about-data__teamcard {
  border: 1px solid rgba(212, 175, 55, 0.35);
  background: var(--steel);
  text-align: center;
  padding: 1.5rem 1rem;
  position: relative;
  box-shadow: var(--shadow-hard);
}

.page-about .about-data__teamcard::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--gold), var(--purple), var(--neon));
}

.page-about .about-data__teamlabel {
  font-family: var(--font-data);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .about-data__teamnum {
  display: block;
  font-family: var(--font-heading);
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.2;
  color: var(--gold);
}

.page-about .about-data__teamnum span {
  font-size: 2rem;
  color: var(--neon);
}

.page-about .about-data__teamdesc {
  display: block;
  font-size: 0.8125rem;
  color: var(--muted);
  margin-top: 0.4rem;
}

/* ---------- 安全与合规 ---------- */
.page-about .about-security {
  background: radial-gradient(circle at 85% 15%, rgba(212, 175, 55, 0.06) 0%, transparent 40%);
}

.page-about .about-security__grid {
  display: grid;
  gap: 2.5rem;
  margin-top: 2rem;
}

.page-about .about-security__figure {
  margin: 0;
  border: 1px solid rgba(212, 175, 55, 0.25);
  padding: 0.65rem;
  background: var(--steel);
  box-shadow: var(--shadow-hard);
}

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

.page-about .about-security__items {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.page-about .about-security__item {
  display: grid;
  grid-template-columns: 2.8rem 1fr;
  gap: 1rem;
  align-items: flex-start;
  border-left: 3px solid var(--gold);
  padding: 0.9rem 1rem 0.9rem 1.25rem;
  background: rgba(31, 42, 68, 0.5);
  transition: background 200ms ease-out;
}

.page-about .about-security__item:hover {
  background: rgba(31, 42, 68, 0.8);
}

.page-about .about-security__badge {
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--navy);
  background: var(--gold);
  width: 2.2rem;
  height: 2.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-about .about-security__item h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--off-white);
  letter-spacing: 0.02em;
}

.page-about .about-security__item p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-security__item a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-security__notice {
  margin: 2rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
  border: 1px dashed rgba(212, 175, 55, 0.3);
  border-left: 3px solid var(--red);
  padding: 0.9rem 1rem;
}

/* ---------- 合作与荣誉 ---------- */
.page-about .about-honors {
  background: repeating-linear-gradient(45deg, transparent 0 18px, rgba(212, 175, 55, 0.02) 18px 36px);
}

.page-about .about-honors__grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 2rem;
}

.page-about .about-honors__card {
  background: var(--cream);
  color: var(--brown-black);
  border: 2px solid var(--gold);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.45);
  padding: 1.75rem 1.5rem;
  position: relative;
  transition: transform 200ms ease-out, box-shadow 200ms ease-out;
}

.page-about .about-honors__card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.5);
}

.page-about .about-honors__card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 2.5rem;
  height: 2.5rem;
  background: linear-gradient(135deg, transparent 50%, rgba(212, 175, 55, 0.25) 50%);
  pointer-events: none;
}

.page-about .about-honors__card h3 {
  margin: 0 0 0.3rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--brown-black);
}

.page-about .about-honors__num {
  font-family: var(--font-editorial);
  font-size: 2.75rem;
  font-weight: 700;
  color: var(--brown-black);
  line-height: 1.15;
  margin: 0.5rem 0 0.75rem;
  border-bottom: 3px solid var(--red);
  display: inline-block;
  padding-bottom: 0.25rem;
}

.page-about .about-honors__card > p:last-child {
  font-size: 0.875rem;
  line-height: 1.75;
  color: #4A3521;
  margin: 0;
}

.page-about .about-honors__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 2rem;
}

/* ---------- CTA 区块 ---------- */
.page-about .about-cta {
  padding-bottom: 4rem;
}

.page-about .about-cta__inner {
  border: 2px solid var(--gold);
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.08), transparent 70%);
  padding: 2.5rem 1.5rem;
  text-align: center;
  position: relative;
}

.page-about .about-cta__inner h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 800;
  color: var(--gold);
  margin: 0.75rem 0;
  letter-spacing: 0.02em;
}

.page-about .about-cta__inner p {
  color: var(--muted);
  max-width: 52ch;
  margin: 0 auto 1.5rem;
  line-height: 1.8;
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

/* ---------- 响应式增强 ---------- */
@media (min-width: 768px) {
  .page-about .about-honors__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 860px) {
  .page-about .about-timeline__rail {
    padding-left: 280px;
  }

  .page-about .about-timeline__rail::before {
    left: 230px;
    width: 3px;
  }

  .page-about .about-timeline__item {
    margin-bottom: 3.5rem;
  }

  .page-about .about-timeline__year {
    position: absolute;
    left: -280px;
    top: 0;
    width: 220px;
    text-align: right;
    margin: 0;
  }

  .page-about .about-timeline__year::before {
    left: auto;
    right: -11px;
    top: 50%;
    width: 16px;
    height: 16px;
    transform: translateY(-50%) rotate(45deg);
    background: var(--navy);
    border: 3px solid var(--gold);
    border-radius: 0;
  }

  .page-about .about-timeline__year span {
    display: block;
    background: transparent;
    border: none;
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1;
    padding: 0;
    color: var(--gold);
    opacity: 0.55;
    transition: opacity 200ms ease-out;
  }

  .page-about .about-timeline__item:hover .about-timeline__year span {
    opacity: 1;
  }

  .page-about .about-timeline__item:not(:last-child)::after {
    left: 8rem;
    bottom: -1.75rem;
    width: 110px;
    height: 6px;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 2rem 0 4rem;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3.5rem;
    align-items: center;
  }

  .page-about .about-data__layout {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3.5rem;
    align-items: start;
  }

  .page-about .about-security__grid {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 3.5rem;
    align-items: center;
  }
}