.page-about{
  --page-gutter: clamp(16px, 4vw, 32px);
  position: relative;
  background: var(--bg-night);
  color: var(--text-light);
  overflow-x: hidden;
}

/* 面包屑 */
.page-about .about-breadcrumb{
  padding-top: 22px;
}
.page-about .about-breadcrumb .breadcrumb{
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
}
.page-about .about-breadcrumb a{
  color: var(--accent-neon);
  text-decoration: none;
  transition: color .2s ease;
}
.page-about .about-breadcrumb a:hover{
  color: var(--accent-peach);
}

/* 首屏封面 */
.page-about .about-hero{
  position: relative;
  margin-top: 6px;
  padding: 36px 0 52px;
  border-top: 4px solid var(--line-wine);
  border-bottom: 2px solid var(--line-wine);
  background:
    radial-gradient(circle at 84% 8%, rgba(180,75,255,.22), transparent 42%),
    radial-gradient(circle at 8% 92%, rgba(255,51,92,.14), transparent 46%),
    repeating-linear-gradient(0deg, rgba(0,229,255,.026) 0, rgba(0,229,255,.026) 1px, transparent 1px, transparent 5px);
}
.page-about .about-hero::before{
  content: "ABOUT";
  position: absolute;
  top: 18px;
  right: -2%;
  z-index: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(82px, 18vw, 176px);
  line-height: 1;
  letter-spacing: .06em;
  color: rgba(180,75,255,.055);
  pointer-events: none;
  user-select: none;
}
.page-about .about-hero-grid{
  position: relative;
  z-index: 1;
}
.page-about .about-kicker{
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent-electric);
}
.page-about .about-kicker-line{
  display: inline-block;
  width: 36px;
  height: 2px;
  background: var(--grad-peach);
}
.page-about .about-title{
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-size: clamp(42px, 8vw, 76px);
  line-height: .95;
  letter-spacing: -.02em;
  text-transform: uppercase;
}
.page-about .about-title-sub{
  display: block;
  margin-top: 14px;
  font-size: .6em;
  line-height: 1.12;
  letter-spacing: 0;
  text-transform: none;
  color: var(--text-light);
}
.page-about .about-lede{
  margin: 0 0 22px;
  padding-left: 14px;
  border-left: 4px solid var(--accent-strawberry);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  color: rgba(242,239,255,.9);
  max-width: 62ch;
}
.page-about .about-hero-tags{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 首屏统计 */
.page-about .about-hero-stats{
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 30px;
}
.page-about .about-stat{
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 104px;
  padding: 16px 14px;
  background: var(--bg-panel);
  border: 1.5px solid var(--line-dim);
  box-shadow: var(--shadow-offset);
  transition: border-color .22s ease, transform .22s ease;
}
.page-about .about-stat:hover{
  border-color: var(--accent-electric);
  transform: translateY(-2px);
}
.page-about .about-stat--feature{
  grid-column: span 2;
  min-height: 128px;
  border-color: rgba(255,136,176,.52);
  background:
    linear-gradient(135deg, rgba(255,136,176,.20), rgba(255,51,92,.06)),
    var(--bg-panel);
  box-shadow: 8px 8px 0 rgba(255,51,92,.18);
}
.page-about .about-stat-num{
  font-family: var(--font-display);
  font-size: clamp(38px, 7vw, 58px);
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--text-light);
}
.page-about .about-stat--feature .about-stat-num{
  background: var(--grad-peach);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.page-about .about-stat--orange .about-stat-num{ color: var(--accent-orange); }
.page-about .about-stat--purple .about-stat-num{ color: var(--accent-neon); }
.page-about .about-stat--blue .about-stat-num{ color: var(--accent-electric); }
.page-about .about-stat-label{
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.page-about .about-hero-note{
  position: absolute;
  right: 0;
  top: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--accent-electric);
  opacity: .72;
  pointer-events: none;
}

/* 主从布局 */
.page-about .about-layout{
  padding-top: 40px;
  padding-bottom: 56px;
  display: grid;
  gap: 48px;
  grid-template-columns: minmax(0, 1fr);
}
.page-about .about-main-col,
.page-about .about-side-col{
  min-width: 0;
}

/* 章节公用 */
.page-about .about-section{
  margin-bottom: 48px;
}
.page-about .about-section-head{
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin-bottom: 20px;
}
.page-about .about-section-head .section-heading{
  margin: 0;
}
.page-about .section-annotate{
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--accent-neon);
  opacity: .8;
}
.page-about .about-para{
  margin: 0 0 18px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.72;
  color: rgba(242,239,255,.84);
}
.page-about .about-para:last-child{
  margin-bottom: 0;
}

/* 站务信条 */
.page-about .about-principles{
  display: grid;
  gap: 14px;
  margin: 24px 0 22px;
}
.page-about .about-principal{
  position: relative;
  padding: 20px 18px 18px 22px;
  background: var(--bg-panel);
  border: 1.5px solid var(--line-dim);
  border-left: 6px solid var(--accent-peach);
  box-shadow: var(--shadow-offset);
  transition: border-color .22s ease, box-shadow .22s ease;
}
.page-about .about-principal:nth-child(2){
  border-left-color: var(--accent-strawberry);
}
.page-about .about-principal:nth-child(3){
  border-left-color: var(--accent-electric);
}
.page-about .about-principal:hover{
  border-color: var(--accent-electric);
  box-shadow: 4px 4px 0 rgba(0,229,255,.14);
}
.page-about .about-principal-num{
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent-orange);
}
.page-about .about-principal h3{
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: .02em;
}
.page-about .about-principal p{
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-muted);
}

/* 图片块 */
.page-about .about-figure{
  margin: 24px 0;
  background: var(--bg-panel);
  border: 2px solid var(--line-wine);
  box-shadow: var(--shadow-offset);
}
.page-about .about-figure-img,
.page-about .about-team-photo-img{
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-figure figcaption{
  padding: 12px 14px;
  border-top: 1px solid var(--line-wine);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-muted);
}
.page-about .about-figure--wide .about-figure-img{
  aspect-ratio: 16 / 9;
}

/* 工作流程技能树 */
.page-about .workflow-tree{
  margin-top: 28px;
}
.page-about .workflow-node{
  position: relative;
  padding: 22px 18px 18px 24px;
  background: var(--bg-panel);
  border: 1.5px solid var(--line-dim);
  box-shadow: var(--shadow-offset);
  transition: border-color .22s ease, box-shadow .22s ease, transform .22s ease;
}
.page-about .workflow-node::before{
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--accent-neon), var(--accent-electric));
  opacity: .8;
}
.page-about .workflow-node:hover{
  border-color: var(--accent-electric);
  box-shadow: 4px 4px 0 rgba(0,229,255,.16);
  transform: translateX(2px);
}
.page-about .workflow-node-step{
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent-orange);
}
.page-about .workflow-node-title{
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 26px;
  letter-spacing: .02em;
}
.page-about .workflow-node-desc{
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-muted);
}
.page-about .workflow-node-meta{
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
}
.page-about .workflow-node-meta div{
  display: flex;
  gap: 6px;
}
.page-about .workflow-node-meta dt{
  color: var(--text-muted);
}
.page-about .workflow-node-meta dd{
  margin: 0;
  color: var(--text-light);
}
.page-about .workflow-arrow{
  position: relative;
  display: block;
  height: 30px;
  text-align: center;
  line-height: 30px;
  color: var(--accent-electric);
  font-family: var(--font-mono);
  font-size: 14px;
}
.page-about .workflow-arrow::before{
  content: "";
  position: absolute;
  top: 50%;
  left: 14%;
  right: 14%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-neon), var(--accent-electric));
  opacity: .42;
}

/* 维护脉络时间轴 */
.page-about .about-timeline{
  position: relative;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}
.page-about .about-timeline::before{
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--accent-peach), var(--accent-neon), var(--accent-electric));
  opacity: .7;
}
.page-about .about-milestone{
  position: relative;
  padding: 0 0 28px 30px;
}
.page-about .about-milestone:last-child{
  padding-bottom: 4px;
}
.page-about .about-milestone-point{
  position: absolute;
  left: 0;
  top: 4px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 3px solid var(--bg-night);
  background: var(--accent-peach);
  box-shadow: 0 0 0 2px var(--accent-peach), 0 0 12px rgba(255,136,176,.7);
  transition: background .2s ease, box-shadow .2s ease, transform .2s ease;
}
.page-about .about-milestone:hover .about-milestone-point{
  background: var(--accent-electric);
  box-shadow: 0 0 0 2px var(--accent-electric), 0 0 16px rgba(0,229,255,.7);
  transform: scale(1.28);
}
.page-about .about-milestone-body{
  padding: 8px 12px 10px 14px;
  border-left: 2px solid transparent;
  transition: border-color .2s ease, background .2s ease;
}
.page-about .about-milestone:hover .about-milestone-body{
  border-left-color: var(--accent-electric);
  background: rgba(0,229,255,.035);
}
.page-about .about-milestone-num{
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--accent-orange);
}
.page-about .about-milestone h3{
  margin: 5px 0 6px;
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: .02em;
  color: var(--text-light);
}
.page-about .about-milestone p{
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-muted);
}

/* 侧栏反馈卡 */
.page-about .about-callout{
  margin-top: 40px;
  padding: 28px 22px 26px;
  background:
    linear-gradient(135deg, rgba(255,51,92,.16), rgba(180,75,255,.08)),
    var(--bg-panel);
  border: 2px solid var(--accent-peach);
  box-shadow: 8px 8px 0 rgba(255,51,92,.16);
  text-align: center;
}
.page-about .about-callout-title{
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 27px;
  line-height: 1.1;
  color: var(--accent-peach);
}
.page-about .about-callout > p{
  margin: 0 auto 18px;
  max-width: 30ch;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-muted);
}
.page-about .about-callout-actions{
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

/* 团队与支持 */
.page-about .about-team-section{
  position: relative;
  padding: 44px 0 56px;
  border-top: 4px solid var(--line-wine);
  background:
    radial-gradient(circle at 78% 28%, rgba(255,51,92,.14), transparent 44%),
    var(--bg-panel);
  overflow: hidden;
}
.page-about .about-team-section::after{
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, rgba(0,229,255,.02) 0, rgba(0,229,255,.02) 1px, transparent 1px, transparent 7px);
  pointer-events: none;
}
.page-about .about-team-section .container{
  position: relative;
  z-index: 1;
}
.page-about .about-team-grid{
  display: grid;
  gap: 34px;
  margin-top: 32px;
}
.page-about .about-team-photo{
  position: relative;
  margin: 0;
  border: 3px solid var(--accent-peach);
  box-shadow: 12px 12px 0 rgba(0,0,0,.32);
}
.page-about .about-team-photo::after{
  content: "";
  position: absolute;
  right: -11px;
  bottom: -11px;
  width: 42%;
  height: 42%;
  border-right: 3px solid var(--accent-electric);
  border-bottom: 3px solid var(--accent-electric);
  pointer-events: none;
}
.page-about .about-team-photo-img{
  width: 100%;
}
.page-about .about-team-photo figcaption{
  padding: 11px 13px;
  background: var(--bg-night);
  border-top: 3px solid var(--line-wine);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-muted);
}
.page-about .about-team-subtitle{
  margin: 22px 0 10px;
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: .04em;
  color: var(--accent-orange);
}
.page-about .about-contact-list{
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  border-top: 2px solid var(--line-wine);
}
.page-about .about-contact-list li{
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 14px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line-dim);
}
.page-about .about-contact-list > li > span:first-child{
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--accent-orange);
}
.page-about .about-contact-text{
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
  color: var(--text-light);
  word-break: break-all;
}
.page-about .about-support-note{
  margin: 14px 0 0;
  padding: 12px 14px;
  border: 1.5px dashed var(--line-wine);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-muted);
}

/* 响应式 */
@media (min-width: 720px){
  .page-about .about-principles{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-principal:first-child{
    grid-column: span 2;
  }
  .page-about .about-creed .about-figure{
    float: right;
    width: 44%;
    margin: 8px 0 24px 24px;
  }
  .page-about .about-figure--wide{
    float: none;
    width: 100%;
  }
}

@media (min-width: 920px){
  .page-about .about-hero{
    padding: 48px 0 60px;
  }
  .page-about .about-hero-grid{
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
    gap: clamp(28px, 5vw, 64px);
    align-items: end;
  }
  .page-about .about-hero-stats{
    margin-top: 0;
  }
  .page-about .about-layout{
    grid-template-columns: minmax(0, 1.18fr) minmax(0, .82fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }
  .page-about .about-team-grid{
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    gap: 48px;
    align-items: center;
  }
}

@media (min-width: 1200px){
  .page-about .about-hero-grid{
    gap: 80px;
  }
  .page-about .about-layout{
    gap: 72px;
  }
  .page-about .about-team-grid{
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
  }
}