.page-about{
  --about-line-soft:rgba(44,62,80,.14);
  --about-line-deep:rgba(255,255,255,.16);
  --about-deep:#0F1B2D;
  --about-ink:#2C3E50;
  --about-ink-soft:#5A6B7A;
  --about-muted:rgba(44,62,80,.68);
}
.page-about .wrap{width:min(1200px,100% - 40px);margin-inline:auto}
.page-about .coverage-hero{
  background:var(--bg);
  position:relative;
  overflow:hidden;
  padding-top:calc(var(--header-h) + 36px);
  padding-bottom:52px;
}
.page-about .coverage-hero::before{
  content:"";
  position:absolute;
  width:220px;
  height:220px;
  right:-70px;
  top:110px;
  background-image:radial-gradient(circle,rgba(255,230,0,.30) 1px,transparent 1px);
  background-size:22px 22px;
  border-radius:50%;
  pointer-events:none;
}
.page-about .coverage-hero::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:10px;
  background:repeating-linear-gradient(90deg,var(--card-orange) 0 90px,var(--card-blue) 90px 180px,var(--card-rose) 180px 270px,var(--accent) 270px 360px);
  border-radius:10px 10px 0 0;
  opacity:.9;
}
.page-about .hero-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
}
.page-about .hero-copy h1{
  font-size:44px;
  font-weight:900;
  line-height:1.1;
  letter-spacing:-.03em;
  margin:10px 0 16px;
}
.page-about .hero-lead{
  font-size:16px;
  line-height:1.8;
  color:var(--about-ink);
  max-width:30em;
  margin:0 0 18px;
}
.page-about .hero-lead strong{
  font-size:1.3em;
  color:var(--about-deep);
  background:linear-gradient(transparent 60%,var(--accent) 60%);
  padding:0 2px;
}
.page-about .hero-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:22px;
}
.page-about .hero-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  font-weight:700;
  border-radius:999px;
  padding:6px 14px;
}
.page-about .hero-tag--dark{background:var(--about-deep);color:var(--white)}
.page-about .hero-tag--accent{background:var(--accent);color:var(--about-ink)}
.page-about .hero-tag--outline{border:2px solid var(--about-ink);color:var(--about-ink)}
.page-about .hero-button{margin-top:2px}
.page-about .button{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:var(--about-deep);
  color:var(--white);
  border:2px solid var(--about-deep);
  border-radius:999px;
  padding:10px 24px;
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  transition:transform .2s ease,background .2s;
}
.page-about .button:hover{
  transform:translateY(-2px);
  background:var(--accent);
  border-color:var(--accent);
  color:var(--about-ink);
}
.page-about .section--deep .button,.page-about .section--green .button{
  background:transparent;
  color:var(--white);
  border-color:rgba(255,255,255,.5);
}
.page-about .section--deep .button:hover,.page-about .section--green .button:hover{
  background:var(--accent);
  border-color:var(--accent);
  color:var(--about-ink);
}
.page-about .entry-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
}
.page-about .entry-card{
  display:block;
  position:relative;
  border-radius:var(--radius);
  padding:22px 20px 18px;
  text-decoration:none;
  color:var(--about-ink);
  box-shadow:var(--shadow-soft);
  transition:transform .24s ease,box-shadow .24s ease;
  min-height:150px;
}
.page-about .entry-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow);
}
.page-about .entry-card--orange{background:var(--card-orange)}
.page-about .entry-card--blue{background:var(--card-blue)}
.page-about .entry-card--rose{background:var(--card-rose);color:var(--white)}
.page-about .entry-card--sun{background:var(--accent)}
.page-about .entry-card__no{
  font-size:12px;
  font-weight:900;
  letter-spacing:.12em;
  opacity:.5;
}
.page-about .entry-card__title{
  font-size:22px;
  font-weight:900;
  margin:8px 0 4px;
}
.page-about .entry-card__description{
  font-size:13px;
  line-height:1.6;
  opacity:.75;
  margin:0;
}
.page-about .entry-card__count{
  display:block;
  font-size:34px;
  font-weight:900;
  line-height:1;
  margin-top:12px;
}
.page-about .entry-card__count em{
  font-style:normal;
  font-size:14px;
  font-weight:700;
  opacity:.65;
}
.page-about .entry-card .status-badge{
  position:absolute;
  top:14px;
  right:14px;
}
.page-about .index-strip{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:nowrap;
  overflow-x:auto;
  padding:10px 20px;
  background:var(--bg-deep);
  position:sticky;
  top:calc(var(--header-h) - 6px);
  z-index:30;
  border-top:3px solid var(--accent);
  scrollbar-width:none;
}
.page-about .index-strip::-webkit-scrollbar{display:none}
.page-about .index-strip__label{
  color:var(--accent);
  font-size:12px;
  font-weight:900;
  letter-spacing:.12em;
  white-space:nowrap;
  margin-right:6px;
}
.page-about .index-pill{
  display:inline-block;
  color:rgba(255,255,255,.85);
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);
  border-radius:999px;
  padding:6px 14px;
  font-size:13px;
  font-weight:700;
  text-decoration:none;
  white-space:nowrap;
  transition:background .2s,color .2s;
}
.page-about .index-pill:hover{
  background:var(--accent);
  color:var(--about-ink);
}
.page-about .section{padding:56px 0}
.page-about .section-head{
  display:flex;
  align-items:flex-start;
  gap:16px;
  margin-bottom:34px;
}
.page-about .section-head__no{
  font-size:58px;
  line-height:.9;
  font-weight:900;
  letter-spacing:-.05em;
  color:var(--accent);
  -webkit-text-stroke:2px var(--about-ink);
  text-stroke:2px var(--about-ink);
  white-space:nowrap;
}
.page-about .section-head__text h2{
  font-size:26px;
  font-weight:900;
  line-height:1.2;
  margin:0 0 4px;
}
.page-about .section-head__hint{
  font-size:13px;
  color:var(--about-ink-soft);
  margin:0;
}
.page-about .section-head--light .section-head__no{
  color:transparent;
  -webkit-text-stroke-color:rgba(255,255,255,.55);
  text-stroke-color:rgba(255,255,255,.55);
}
.page-about .section-head--light h2{color:var(--white)}
.page-about .section-head--light .section-head__hint{color:rgba(255,255,255,.55)}
.page-about .scope-section{background:var(--bg)}
.page-about .scope-layout{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
}
.page-about .scope-main p{
  font-size:15px;
  line-height:1.85;
  color:var(--about-ink);
  margin:0 0 16px;
}
.page-about .scope-main p:first-child{font-size:17px}
.page-about .scope-main strong{
  color:var(--about-deep);
  font-size:1.12em;
  background:linear-gradient(transparent 62%,var(--accent) 62%);
}
.page-about .scope-stats{
  background:var(--card-orange);
  border-radius:var(--radius);
  padding:22px;
  box-shadow:var(--shadow-soft);
  position:relative;
}
.page-about .scope-stats::after{
  content:"";
  position:absolute;
  right:-8px;
  bottom:-8px;
  width:52px;
  height:52px;
  border-right:4px solid var(--card-rose);
  border-bottom:4px solid var(--card-rose);
  border-radius:0 0 14px 0;
}
.page-about .scope-stats__title{
  display:block;
  font-size:18px;
  font-weight:900;
  margin-bottom:14px;
}
.page-about .scope-stats__list{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:8px;
  margin:0;
}
.page-about .scope-stats__list div{
  background:rgba(255,255,255,.38);
  border:1px solid rgba(44,62,80,.14);
  border-radius:var(--radius-md);
  padding:10px 12px;
}
.page-about .scope-stats__list dt{
  font-size:12px;
  font-weight:700;
  opacity:.75;
}
.page-about .scope-stats__list dd{
  font-size:24px;
  font-weight:900;
  margin:2px 0 0;
}
.page-about .category-layout{
  display:grid;
  grid-template-columns:1fr;
  gap:30px;
  align-items:start;
}
.page-about .category-section{
  border-top:6px solid var(--card-orange);
  border-bottom:6px solid var(--card-blue);
}
.page-about .category-layout{
  background-image:radial-gradient(rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:20px 20px;
  border-radius:var(--radius);
}
.page-about .tree-canvas{
  background:rgba(255,255,255,.05);
  border:1px dashed rgba(255,255,255,.22);
  border-radius:var(--radius);
  padding:22px;
}
.page-about .tree-block{
  background:rgba(255,255,255,.04);
  border-radius:var(--radius-md);
  overflow:hidden;
}
.page-about .tree-block + .tree-block{margin-top:16px}
.page-about .tree-root{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:12px;
  padding:14px 16px;
  cursor:pointer;
  list-style:none;
  font-weight:700;
  color:var(--white);
}
.page-about .tree-root::-webkit-details-marker{display:none}
.page-about .tree-root__no{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  background:var(--card-orange);
  color:var(--about-ink);
  border-radius:50%;
  font-weight:900;
  font-size:16px;
  flex-shrink:0;
}
.page-about .tree-root--accent .tree-root__no{background:var(--card-blue)}
.page-about .tree-root__name{font-size:19px;font-weight:900}
.page-about .tree-root__count{
  font-size:13px;
  color:rgba(255,255,255,.75);
  background:rgba(255,255,255,.12);
  padding:4px 10px;
  border-radius:999px;
  margin-left:auto;
}
.page-about .tree-tags{
  padding:0 16px 16px 62px;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.page-about .tree-tag{
  background:rgba(255,255,255,.08);
  color:rgba(255,255,255,.9);
  border:1px solid rgba(255,255,255,.18);
  border-radius:8px;
  padding:6px 12px;
  font-size:13px;
  font-weight:500;
  transition:background .2s;
}
.page-about .tree-tag:hover{background:rgba(255,255,255,.16)}
.page-about .tree-standalone{
  margin-top:16px;
  background:var(--card-rose);
  border-radius:var(--radius-md);
  padding:14px 16px;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.page-about .tree-standalone__label{
  font-size:12px;
  font-weight:900;
  letter-spacing:.12em;
  opacity:.8;
  color:var(--white);
}
.page-about .tree-standalone__items{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.page-about .tree-standalone__item{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  background:rgba(255,255,255,.22);
  color:var(--white);
  border-radius:999px;
  padding:8px 18px;
  text-decoration:none;
  font-weight:700;
  font-size:14px;
  transition:background .2s,color .2s;
}
.page-about .tree-standalone__item strong{font-size:18px}
.page-about .tree-standalone__item:hover{
  background:var(--accent);
  color:var(--about-ink);
}
.page-about .tree-figure,.page-about .batch-figure,.page-about .device-figure{
  margin:0;
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
}
.page-about .tree-figure img,.page-about .batch-figure img,.page-about .device-figure img{
  display:block;
  width:100%;
  height:auto;
  object-fit:cover;
}
.page-about .media__caption{
  font-size:12px;
  text-align:center;
  padding:7px 12px;
  color:var(--white);
  background:rgba(15,27,45,.72);
}
.page-about .batch-layout{
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
}
.page-about .batch-section{
  border-top:6px solid var(--card-blue);
  border-bottom:6px solid var(--accent);
  background-image:radial-gradient(rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:24px 24px;
}
.page-about .batch-timeline{
  position:relative;
  display:flex;
  flex-direction:column;
}
.page-about .batch-timeline::before{
  content:"";
  position:absolute;
  left:6px;
  top:10px;
  bottom:10px;
  width:3px;
  background:rgba(255,255,255,.22);
  border-radius:3px;
}
.page-about .timeline-item{
  display:grid;
  grid-template-columns:14px 1fr;
  gap:18px;
  padding-bottom:18px;
  position:relative;
}
.page-about .timeline-item__marker{
  width:14px;
  height:14px;
  border-radius:50%;
  background:var(--accent);
  border:3px solid rgba(255,255,255,.35);
  margin-top:20px;
  box-shadow:0 0 0 2px var(--accent);
}
.page-about .timeline-item--current .timeline-item__marker{
  background:var(--success);
  box-shadow:0 0 0 3px var(--accent);
}
.page-about .timeline-item__body{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-md);
  padding:14px 16px;
}
.page-about .timeline-item__tag{
  display:inline-block;
  font-size:12px;
  font-weight:900;
  color:var(--bg-green);
  background:var(--accent);
  border-radius:999px;
  padding:3px 10px;
  margin-bottom:8px;
}
.page-about .timeline-item__body h3{
  font-size:17px;
  font-weight:900;
  margin:0 0 6px;
  color:var(--white);
}
.page-about .timeline-item__body p{
  font-size:14px;
  line-height:1.65;
  opacity:.85;
  color:var(--white);
  margin:0 0 10px;
}
.page-about .batch-rules{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:10px;
}
.page-about .rule-card{
  border-radius:var(--radius-md);
  padding:18px 12px;
  text-align:center;
  color:var(--about-ink);
  box-shadow:var(--shadow-soft);
}
.page-about .rule-card--sun{background:var(--accent)}
.page-about .rule-card--orange{background:var(--card-orange)}
.page-about .rule-card--blue{background:var(--card-blue)}
.page-about .rule-card__num{
  display:block;
  font-size:23px;
  font-weight:900;
  line-height:1.2;
}
.page-about .rule-card__label{
  display:block;
  font-size:12px;
  font-weight:700;
  opacity:.75;
  margin-top:5px;
}
.page-about .batch-links{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.page-about .search-section{background:var(--bg)}
.page-about .method-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
}
.page-about .method-card{
  border-radius:var(--radius);
  padding:22px;
  color:var(--about-ink);
  box-shadow:var(--shadow-soft);
  position:relative;
  transition:transform .22s ease;
}
.page-about .method-card:hover{transform:translateY(-4px)}
.page-about .method-card--orange{background:var(--card-orange)}
.page-about .method-card--blue{background:var(--card-blue)}
.page-about .method-card--rose{background:var(--card-rose);color:var(--white)}
.page-about .method-card--sun{background:var(--accent)}
.page-about .method-card__no{
  font-size:13px;
  font-weight:900;
  opacity:.45;
  letter-spacing:.1em;
}
.page-about .method-card h3{
  font-size:20px;
  font-weight:900;
  margin:8px 0 8px;
}
.page-about .method-card p{
  font-size:14px;
  line-height:1.7;
  opacity:.8;
  margin:0;
}
.page-about .path-strip{
  margin-top:28px;
  background:var(--bg-deep);
  border-radius:var(--radius);
  color:var(--white);
  padding:20px 22px;
}
.page-about .path-strip h3{
  font-size:16px;
  font-weight:900;
  margin:0 0 14px;
  color:var(--accent);
}
.page-about .path-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  grid-template-columns:1fr;
  gap:10px;
}
.page-about .path-list li{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px;
  font-size:14px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  border-radius:8px;
  padding:10px 14px;
}
.page-about .path-list a{
  color:var(--white);
  text-decoration:none;
  font-weight:700;
  transition:color .2s;
}
.page-about .path-list a:hover{color:var(--accent)}
.page-about .path-list .path-list__arrow{color:var(--accent)}
.page-about .path-list li > span:last-child{
  color:rgba(255,255,255,.65);
}
.page-about .device-section{
  border-top:6px solid var(--accent);
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:28px 28px;
}
.page-about .device-layout{
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
  align-items:start;
}
.page-about .table-wrap{
  overflow-x:auto;
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius);
}
.page-about .device-table{
  width:100%;
  min-width:560px;
  border-collapse:collapse;
  background:rgba(255,255,255,.03);
}
.page-about .device-table th{
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:.08em;
  text-align:left;
  padding:12px 16px;
  color:var(--accent);
  border-bottom:2px solid rgba(255,255,255,.18);
}
.page-about .device-table td{
  padding:11px 16px;
  font-size:14px;
  border-bottom:1px solid rgba(255,255,255,.07);
  color:var(--white);
}
.page-about .device-table tr:last-child td{border-bottom:0}
.page-about .device-table tr:hover td{background:rgba(255,255,255,.06)}
.page-about .badge-dot{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:700;
  font-size:13px;
}
.page-about .badge-dot::before{
  content:"";
  width:8px;
  height:8px;
  border-radius:50%;
  background:currentColor;
}
.page-about .badge-dot--ok{color:#7bed9f}
.page-about .badge-dot--old{color:#ff6b81}
.page-about .device-side{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}
.page-about .version-note{
  background:var(--card-blue);
  color:var(--about-ink);
  border-radius:var(--radius);
  padding:20px 22px;
  box-shadow:var(--shadow);
}
.page-about .version-note__badge{
  display:inline-block;
  font-size:12px;
  font-weight:900;
  color:var(--white);
  background:var(--about-deep);
  border-radius:999px;
  padding:3px 10px;
  margin-bottom:10px;
}
.page-about .version-note__num{
  display:block;
  font-size:40px;
  font-weight:900;
  line-height:1;
}
.page-about .version-note p{
  font-size:14px;
  line-height:1.65;
  opacity:.8;
  margin:10px 0 0;
}
@media (min-width:768px){
  .page-about .entry-grid{grid-template-columns:repeat(2,1fr)}
  .page-about .scope-layout{grid-template-columns:minmax(0,1.2fr) minmax(0,1fr)}
  .page-about .category-layout{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr)}
  .page-about .method-grid{grid-template-columns:repeat(2,1fr)}
  .page-about .path-list{grid-template-columns:repeat(2,1fr)}
  .page-about .device-side{grid-template-columns:1fr 1fr}
  .page-about .batch-rules{grid-template-columns:repeat(3,1fr)}
}
@media (min-width:1024px){
  .page-about .hero-inner{
    grid-template-columns:minmax(0,.85fr) minmax(0,1.2fr);
    gap:48px;
  }
  .page-about .hero-copy h1{font-size:54px}
  .page-about .entry-grid{gap:20px}
  .page-about .method-grid{grid-template-columns:repeat(4,1fr)}
  .page-about .device-layout{grid-template-columns:minmax(0,1.25fr) minmax(0,.85fr)}
  .page-about .device-side{grid-template-columns:1fr}
  .page-about .scope-stats__list{grid-template-columns:repeat(3,1fr)}
  .page-about .index-strip{padding:12px 24px}
}