/* ===== 页面专属：/about/ 品牌与数据团队 ===== */
.page-about{
  --about-bg: var(--deepest, #061020);
  --about-card: var(--deep-2, #102A43);
  --about-line: rgba(199,208,217,0.14);
  --about-orange-rgb: 255, 75, 30;
  --about-sky-rgb: 46, 156, 230;
  --about-mono: var(--font-mono, 'JetBrains Mono', Consolas, monospace);
  background: var(--about-bg);
  color: var(--light, #F6F8FC);
  overflow-x: hidden;
}

.page-about .container{
  width: min(100% - clamp(20px, 4vw, 48px), 1280px);
  margin-inline: auto;
}

.page-about .index-label{
  font-family: var(--about-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--silver, #C7D0D9);
}

.page-about .section-tag{
  font-family: var(--about-mono);
  font-size: clamp(0.75rem, 1.4vw, 0.875rem);
  color: var(--orange, #FF4B1E);
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.page-about .breadcrumbs{
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.8125rem;
  color: var(--silver, #C7D0D9);
}

.page-about .breadcrumbs a{
  color: var(--silver, #C7D0D9);
  text-decoration: none;
  transition: color var(--dur, 0.3s) var(--ease, cubic-bezier(0.4,0,0.2,1));
}

.page-about .breadcrumbs a:hover{
  color: var(--orange, #FF4B1E);
}

.page-about .breadcrumbs-current{
  color: var(--light, #F6F8FC);
  font-weight: 600;
}

.page-about .btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  background: var(--orange, #FF4B1E);
  color: #fff;
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  font-weight: 700;
  font-size: 0.9375rem;
  border-radius: var(--radius, 12px);
  box-shadow: 0 8px 24px rgba(var(--about-orange-rgb), 0.3);
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  border: 1px solid transparent;
}

.page-about .btn:hover{
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(var(--about-orange-rgb), 0.4);
}

.page-about .btn--ghost{
  background: transparent;
  border-color: rgba(var(--about-sky-rgb), 0.5);
  color: var(--sky, #2E9CE6);
  box-shadow: none;
}

.page-about .btn--ghost:hover{
  border-color: var(--sky, #2E9CE6);
  background: rgba(var(--about-sky-rgb), 0.08);
  box-shadow: none;
}

/* ===== 首屏 hero ===== */
.page-about .about-hero{
  position: relative;
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(3rem, 6vw, 5rem);
  overflow: hidden;
}

.page-about .about-hero__bg{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.22;
  z-index: 0;
}

.page-about .about-hero__shade{
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(100deg, rgba(6,16,32,0.96) 0%, rgba(11,28,52,0.82) 45%, rgba(16,42,67,0.45) 100%);
  pointer-events: none;
}

.page-about .about-hero .container{
  position: relative;
  z-index: 2;
}

.page-about .about-hero__grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.page-about .about-hero__meta{
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1rem;
}

.page-about .about-hero__content{
  max-width: 860px;
}

.page-about .about-hero h1{
  font-family: var(--font-head, 'Noto Sans CJK Black', sans-serif);
  font-size: clamp(1.8rem, 5.4vw, 3.4rem);
  font-weight: 900;
  line-height: 1.18;
  margin: 0 0 clamp(1.2rem, 3vw, 2rem);
  letter-spacing: -0.015em;
  color: var(--light, #F6F8FC);
}

.page-about .about-hero__lead{
  font-size: clamp(0.9375rem, 1.6vw, 1.0625rem);
  line-height: 1.8;
  color: var(--silver, #C7D0D9);
  max-width: 720px;
}

.page-about .about-hero__stats{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-top: clamp(1.5rem, 3.5vw, 2.5rem);
  max-width: 680px;
}

.page-about .stat-item{
  background: rgba(16,42,67,0.72);
  border: 1px solid var(--about-line);
  border-left: 3px solid var(--orange, #FF4B1E);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.page-about .stat-item__num{
  display: block;
  font-family: var(--about-mono);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 700;
  color: var(--light, #F6F8FC);
  line-height: 1.2;
}

.page-about .stat-item__label{
  display: block;
  font-size: 0.8125rem;
  color: var(--silver, #C7D0D9);
  margin-top: 0.375rem;
}

/* ===== 品牌缘起 ===== */
.page-about .about-origin{
  padding: clamp(3.5rem, 7vw, 6rem) 0;
  border-top: 1px solid var(--about-line);
}

.page-about .grid--asym{
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4vw, 3.5rem);
}

.page-about .about-aside{
  align-self: start;
  padding-top: 0.5rem;
}

.page-about .about-aside__title{
  font-family: var(--font-head, 'Noto Sans CJK Black', sans-serif);
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  line-height: 1.25;
  margin: 0.75rem 0 0;
  font-weight: 900;
}

.page-about .title-accent{
  color: var(--orange, #FF4B1E);
}

.page-about .about-origin__body{
  display: grid;
  gap: 1.25rem;
  color: var(--silver, #C7D0D9);
  line-height: 1.85;
  font-size: 1rem;
}

.page-about .about-origin__note{
  margin-top: 1rem;
  padding: 1.25rem;
  background: rgba(11,28,52,0.5);
  border-left: 3px solid rgba(var(--about-sky-rgb), 0.6);
  border-radius: 0 10px 10px 0;
  display: grid;
  gap: 0.5rem;
}

.page-about .about-origin__note p{
  margin: 0;
  font-size: 0.9375rem;
  color: var(--silver, #C7D0D9);
}

/* ===== 数据团队 ===== */
.page-about .about-team{
  padding: clamp(3.5rem, 7vw, 6rem) 0;
  background: var(--about-card);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-team__head{
  display: grid;
  gap: 1.5rem;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.page-about .about-team__head h2,
.page-about .about-honor__head h2{
  font-family: var(--font-head, 'Noto Sans CJK Black', sans-serif);
  font-size: clamp(1.6rem, 3.8vw, 2.4rem);
  line-height: 1.25;
  font-weight: 900;
  margin: 0.25rem 0 0;
}

.page-about .about-team__intro{
  max-width: 640px;
  color: var(--silver, #C7D0D9);
  line-height: 1.8;
  font-size: 0.9375rem;
  margin: 0;
}

.page-about .about-personnel__chart{
  display: grid;
  gap: 1.2rem;
  padding: 1.5rem;
  background: rgba(6,16,32,0.5);
  border-radius: var(--radius, 12px);
  border: 1px solid var(--about-line);
}

.page-about .chart-row{
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  align-items: center;
  gap: 0.75rem;
}

.page-about .chart-row__label{
  font-size: 0.8125rem;
  color: var(--silver, #C7D0D9);
  font-weight: 600;
}

.page-about .chart-row__bar{
  position: relative;
  display: block;
  height: 2.25rem;
  background: rgba(199,208,217,0.1);
  border-radius: 4px;
  overflow: hidden;
  min-width: 80px;
  transition: filter 0.25s ease;
}

.page-about .chart-row__bar:hover{
  filter: brightness(1.2);
}

.page-about .chart-row__bar::before{
  content: "";
  position: absolute;
  inset: 0;
  transform-origin: left center;
}

.page-about .chart-row__bar--eu{
  background: linear-gradient(90deg, rgba(255,75,30,0.05), rgba(255,75,30,0.14));
}

.page-about .chart-row__bar--eu::before{
  width: 50%;
  background: linear-gradient(90deg, var(--orange, #FF4B1E), rgba(255,75,30,0.65));
}

.page-about .chart-row__bar--asia{
  background: linear-gradient(90deg, rgba(46,156,230,0.05), rgba(46,156,230,0.14));
}

.page-about .chart-row__bar--asia::before{
  width: 33.33%;
  background: linear-gradient(90deg, var(--sky, #2E9CE6), rgba(46,156,230,0.65));
}

.page-about .chart-row__bar--rule{
  background: linear-gradient(90deg, rgba(199,208,217,0.05), rgba(199,208,217,0.12));
}

.page-about .chart-row__bar--rule::before{
  width: 16.66%;
  background: linear-gradient(90deg, var(--silver, #C7D0D9), rgba(199,208,217,0.6));
}

.page-about .chart-row__value{
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  height: 100%;
  padding-left: 0.75rem;
  font-family: var(--about-mono);
  font-size: 0.8125rem;
  color: var(--light, #F6F8FC);
  font-weight: 700;
}

.page-about .about-personnel__tip{
  font-size: 0.75rem;
  color: rgba(199,208,217,0.7);
  margin: 0.75rem 0 0;
}

.page-about .about-team__list{
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.25rem);
}

.page-about .team-block{
  padding: 0 0 1.5rem 1.25rem;
  border-left: 1px solid rgba(199,208,217,0.18);
  position: relative;
}

.page-about .team-block::before{
  content: "";
  position: absolute;
  left: -4px;
  top: 6px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange, #FF4B1E);
  box-shadow: 0 0 12px rgba(var(--about-orange-rgb), 0.5);
}

.page-about .team-block h3{
  font-family: var(--about-mono);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  margin: 0.375rem 0 0.5rem;
  color: var(--light, #F6F8FC);
}

.page-about .team-block p{
  color: var(--silver, #C7D0D9);
  line-height: 1.8;
  font-size: 0.9375rem;
  margin: 0;
  max-width: 660px;
}

.page-about .about-team__img{
  width: 100%;
  height: auto;
  max-height: 380px;
  object-fit: cover;
  border-radius: var(--radius, 12px);
  border: 1px solid var(--about-line);
}

/* ===== 时间线 / 发展历程 ===== */
.page-about .about-journey{
  padding: clamp(3.5rem, 7vw, 6rem) 0;
  background: var(--about-bg);
}

.page-about .about-journey__layout{
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  position: relative;
}

.page-about .about-journey__index{
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
}

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

.page-about .year-index__link{
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.5rem 0.875rem;
  border: 1px solid var(--about-line);
  border-radius: 999px;
  color: var(--silver, #C7D0D9);
  text-decoration: none;
  font-size: 0.8125rem;
  transition: all 0.25s ease;
  background: rgba(16,42,67,0.4);
  white-space: nowrap;
}

.page-about .year-index__link:hover{
  border-color: var(--orange, #FF4B1E);
  color: var(--light, #F6F8FC);
}

.page-about .about-journey__texture{
  display: none;
}

.page-about .about-journey__timeline{
  position: relative;
  display: grid;
  gap: 2.5rem;
  padding-left: 0;
}

.page-about .about-journey__timeline::before{
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--orange, #FF4B1E) 0%, rgba(255,75,30,0.3) 40%, var(--sky, #2E9CE6) 100%);
}

.page-about .mile{
  position: relative;
  padding-left: 1.75rem;
}

.page-about .mile::before{
  content: "";
  position: absolute;
  left: -5px;
  top: 0.75rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--deepest, #061020);
  border: 3px solid var(--orange, #FF4B1E);
  z-index: 1;
  box-shadow: 0 0 0 4px rgba(var(--about-orange-rgb), 0.15);
}

.page-about .mile__marker{
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.page-about .mile__marker .index-label{
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--orange, #FF4B1E);
}

.page-about .mile__marker h2{
  font-family: var(--font-head, 'Noto Sans CJK Black', sans-serif);
  font-size: clamp(1.2rem, 2.6vw, 1.7rem);
  font-weight: 800;
  margin: 0;
  color: var(--light, #F6F8FC);
}

.page-about .mile p{
  color: var(--silver, #C7D0D9);
  line-height: 1.85;
  font-size: 0.9375rem;
  max-width: 720px;
  margin: 0;
}

/* ===== 认证与荣誉 ===== */
.page-about .about-honor{
  padding: clamp(3.5rem, 7vw, 6rem) 0;
  background: var(--about-card);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-honor__head{
  display: grid;
  gap: 1.25rem;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.page-about .about-honor__sub{
  max-width: 560px;
  color: var(--silver, #C7D0D9);
  line-height: 1.7;
  margin: 0;
  font-size: 0.9375rem;
}

.page-about .about-honor__grid{
  gap: 1.25rem;
}

.page-about .about-honor__grid .grid--2{
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-about .honor-card{
  display: grid;
  gap: 1rem;
  padding: 1.5rem;
  background: rgba(6,16,32,0.42);
  border: 1px solid var(--about-line);
  border-radius: 12px;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.page-about .honor-card:hover{
  transform: translateY(-3px);
  border-color: rgba(var(--about-orange-rgb), 0.45);
}

.page-about .honor-card__shield{
  width: 48px;
  height: 56px;
  color: var(--orange, #FF4B1E);
}

.page-about .honor-card:nth-child(2) .honor-card__shield{
  color: var(--sky, #2E9CE6);
}

.page-about .honor-card:nth-child(3) .honor-card__shield{
  color: var(--acid, #E6FF3F);
}

.page-about .honor-card:nth-child(4) .honor-card__shield{
  color: var(--orange-light, #FFB3A1);
}

.page-about .honor-card__body{
  display: grid;
  gap: 0.375rem;
}

.page-about .honor-card__body h3{
  font-family: var(--font-head, 'Noto Sans CJK Black', sans-serif);
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 800;
  margin: 0.375rem 0;
  color: var(--light, #F6F8FC);
}

.page-about .honor-card__body p{
  color: var(--silver, #C7D0D9);
  line-height: 1.75;
  font-size: 0.875rem;
  margin: 0;
}

.page-about .about-honor__note{
  margin-top: 2rem;
  padding: 1.25rem 1.5rem;
  border-left: 3px solid rgba(var(--about-sky-rgb), 0.6);
  background: rgba(11,28,52,0.5);
  border-radius: 0 12px 12px 0;
  display: grid;
  gap: 0.5rem;
}

.page-about .about-honor__note p{
  margin: 0;
  color: var(--silver, #C7D0D9);
  line-height: 1.8;
  font-size: 0.9375rem;
  max-width: 760px;
}

/* ===== 联系横幅 ===== */
.page-about .about-contact-band{
  padding: clamp(3rem, 6vw, 5rem) 0;
}

.page-about .about-contact-band__inner{
  display: grid;
  gap: 2rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background: linear-gradient(120deg, rgba(16,42,67,0.9), rgba(6,16,32,0.9));
  border: 1px solid var(--about-line);
  border-radius: 16px;
  position: relative;
  overflow: hidden;
}

.page-about .about-contact-band__inner::after{
  content: "";
  position: absolute;
  right: -3rem;
  top: -3rem;
  width: 10rem;
  height: 10rem;
  border-radius: 50%;
  background: rgba(var(--about-orange-rgb), 0.1);
  filter: blur(40px);
}

.page-about .about-contact-band__text{
  position: relative;
  z-index: 1;
  display: grid;
  gap: 0.75rem;
}

.page-about .about-contact-band__text h2{
  font-family: var(--font-head, 'Noto Sans CJK Black', sans-serif);
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  font-weight: 900;
  margin: 0;
  color: var(--light, #F6F8FC);
  line-height: 1.3;
}

.page-about .about-contact-band__text p{
  margin: 0;
  color: var(--silver, #C7D0D9);
  line-height: 1.75;
  font-size: 0.9375rem;
  max-width: 640px;
}

.page-about .about-contact-band__action{
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  position: relative;
  z-index: 1;
  align-items: center;
}

/* ===== 响应式：桌面端 ===== */
@media (min-width: 768px){
  .page-about .about-hero__grid{
    grid-template-columns: 200px 1fr;
    gap: clamp(2rem, 4vw, 4rem);
  }

  .page-about .about-hero__stats{
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .grid--asym{
    grid-template-columns: 1fr 3fr;
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-about .about-team__head{
    grid-template-columns: 1fr 1fr;
    align-items: end;
  }

  .page-about .about-team__intro{
    justify-self: end;
  }

  .page-about .about-journey__layout{
    grid-template-columns: 260px 1fr;
    gap: clamp(2rem, 5vw, 4.5rem);
  }

  .page-about .about-journey__index{
    position: sticky;
    top: 96px;
    align-self: start;
    height: fit-content;
    margin-bottom: 0;
  }

  .page-about .year-index{
    flex-direction: column;
    gap: 0.375rem;
    border-left: 2px solid var(--about-line);
    margin-left: 0;
  }

  .page-about .year-index__link{
    border: none;
    background: transparent;
    border-radius: 0 8px 8px 0;
    padding: 0.5625rem 1rem;
    border-left: 2px solid transparent;
    margin-left: -2px;
    white-space: normal;
  }

  .page-about .year-index__link:hover{
    border-left-color: rgba(var(--about-orange-rgb), 0.5);
    background: rgba(255,75,30,0.08);
  }

  .page-about .about-journey__texture{
    display: block;
    width: 100%;
    max-width: 260px;
    height: auto;
    margin-top: 2rem;
    object-fit: cover;
    border-radius: 12px;
    opacity: 0.5;
    border: 1px solid var(--about-line);
  }

  .page-about .about-honor__head{
    grid-template-columns: 1fr 1fr;
    align-items: end;
  }

  .page-about .about-honor__sub{
    justify-self: end;
  }

  .page-about .about-honor__grid{
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about .about-contact-band__inner{
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (min-width: 1024px){
  .page-about .about-team__list{
    grid-template-columns: 1fr 1fr;
    gap: 0 2.5rem;
  }

  .page-about .team-block:nth-child(3){
    grid-column: 1 / -1;
  }

  .page-about .about-team__img{
    grid-column: 1 / -1;
    max-height: 420px;
  }

  .page-about .about-journey__timeline{
    gap: 3.5rem;
  }
}

/* 防止窄屏横向溢出 */
.page-about .about-hero__bg{
  max-width: none;
}

.page-about a[data-chapter-link].is-active{
  background: rgba(255,75,30,0.15);
  border-left-color: var(--orange, #FF4B1E);
  color: var(--light, #F6F8FC);
}

.page-about .is-active .index-label{
  color: var(--orange, #FF4B1E);
}