@charset "utf-8";
/* about-hub.css (LAEYO Labs: blue + orange, light theme) */

.about-page{
  --about-bg: #f6f8fc;
  --about-panel: rgba(255,255,255,.82);
  --about-card: #ffffff;
  --about-border: rgba(15,23,42,.10);
  --about-text: #0f172a;
  --about-muted: rgba(15,23,42,.72);
  --about-faint: rgba(15,23,42,.56);
  --about-blue: #2563eb;
  --about-blue-2: #1d4ed8;
  --about-orange: #f97316;
  --about-orange-2: #ea580c;
  --about-shadow: 0 12px 22px rgba(15,23,42,.08);
  --about-shadow-sm: 0 8px 16px rgba(15,23,42,.06);
  --about-radius: 18px;
  --about-radius-lg: 22px;
  --about-gap: 16px;
  --about-gap-lg: 22px;
  --about-max: 1290px;

  color: var(--about-text);
  background:
    radial-gradient(1100px 520px at 14% -12%, rgba(37,99,235,.16), transparent 60%),
    radial-gradient(900px 520px at 92% -6%, rgba(249,115,22,.14), transparent 62%),
    var(--about-bg);
  padding-bottom: 48px;
}

.about-wrap{
  width: min(var(--about-max), calc(100% - 32px));
  margin: 0 auto;
}

.about-pad{ padding: 18px; }

/* Help anchor jumps account for sticky nav */
[data-about-section="1"]{ scroll-margin-top: 92px; }

.about-hero{ padding: 2px 0 18px; }

.about-hero-inner{
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 20px;
  align-items: start;
}

.about-kicker{
  display: inline-block;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--about-faint);
  margin: 0 0 10px;
}

.about-h1{
  font-size: clamp(30px, 3.2vw, 44px);
  line-height: 1.12;
  margin: 0 0 12px;
}

.about-subhead{
  margin: 0 0 16px;
  color: var(--about-muted);
  max-width: 62ch;
}

.about-hero-cta{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 14px 0 10px;
}

.about-hero-links{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 10px;
  color: var(--about-faint);
  font-size: 13px;
}

.about-dot{ opacity: .55; }

.about-link{
  color: var(--about-blue-2);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.about-link:hover{ border-bottom-color: rgba(29,78,216,.35); }
.about-link:focus-visible{
  outline: 3px solid rgba(249,115,22,.35);
  outline-offset: 2px;
  border-bottom-color: transparent;
}

.about-card{
  background: var(--about-card);
  border: 1px solid var(--about-border);
  border-radius: var(--about-radius);
  box-shadow: var(--about-shadow-sm);
}

.about-rail .about-card{
  background: linear-gradient(180deg, rgba(37,99,235,.08), rgba(255,255,255,1));
  border: 1px solid rgba(15,23,42,.10);
  border-radius: var(--about-radius-lg);
  box-shadow: var(--about-shadow);
}

.about-mini{
  margin: 0;
  font-size: 13px;
  color: var(--about-muted);
  line-height: 1.45;
}

.about-muted{ color: var(--about-muted); }

.about-h2{ font-size: 22px; margin: 0 0 6px; }
.about-h3{ font-size: 16px; margin: 0 0 8px; }

.about-sec{ margin: 22px 0; }
.about-sec-head{ margin: 0 0 12px; }
.about-lede{ margin: 0; color: var(--about-muted); max-width: 90ch; }

.about-divider{
  height: 1px;
  background: rgba(15,23,42,.10);
  margin: 14px 0;
}

.about-facts-head{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.about-facts-grid{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.about-fact{
  background: rgba(37,99,235,.06);
  border: 1px solid rgba(29,78,216,.14);
  border-radius: 14px;
  padding: 12px;
}
.about-fact-k{
  font-size: 12px;
  color: var(--about-faint);
  margin-bottom: 6px;
}
.about-fact-v{
  font-size: 14px;
  color: var(--about-text);
}

.about-badges{ display: flex; gap: 8px; flex-wrap: wrap; }
.about-badge{
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(249,115,22,.22);
  background: rgba(249,115,22,.10);
  color: var(--about-muted);
}

.about-btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 14px;
  border-radius: 14px;
  border: 1px solid rgba(15,23,42,.12);
  text-decoration: none;
  color: var(--about-text);
  cursor: pointer;
  user-select: none;
  background: rgba(255,255,255,.92);
  box-shadow: 0 6px 16px rgba(15,23,42,.06);
  transition: transform .12s ease, background .12s ease, border-color .12s ease, box-shadow .12s ease;
}
.about-btn:hover{
  transform: translateY(-1px);
  border-color: rgba(15,23,42,.18);
  box-shadow: 0 10px 22px rgba(15,23,42,.10);
}
.about-btn:focus-visible{
  outline: 3px solid rgba(249,115,22,.35);
  outline-offset: 2px;
}

.about-btn-primary{
  background: var(--about-blue);
  border-color: var(--about-blue);
  color: #fff;
  box-shadow: 0 10px 22px rgba(37,99,235,.22);
}
.about-btn-primary:hover{
  background: var(--about-blue-2);
  border-color: var(--about-blue-2);
}

.about-btn-secondary{
  background: rgba(255,255,255,.95);
  border-color: rgba(37,99,235,.35);
  color: var(--about-blue-2);
}
.about-btn-secondary:hover{ background: rgba(37,99,235,.06); }

.about-btn-ghost{
  background: transparent;
  border-color: rgba(15,23,42,.12);
}
.about-btn-ghost:hover{ background: rgba(15,23,42,.04); }

.about-btn-sm{
  padding: 9px 12px;
  border-radius: 12px;
  font-size: 13px;
}

.about-nav{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: rgba(255,255,255,.86);
  border-top: 1px solid rgba(15,23,42,.08);
  border-bottom: 1px solid rgba(15,23,42,.08);
}

.about-nav-inner{
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
}

.about-brand{
  color: var(--about-text);
  text-decoration: none;
  font-weight: 650;
  border-bottom: 1px solid transparent;
}
.about-brand:hover{ border-bottom-color: rgba(29,78,216,.35); }
.about-brand:focus-visible{
  outline: 3px solid rgba(249,115,22,.35);
  outline-offset: 2px;
}

.about-nav-left{
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.about-nav-sep{ color: var(--about-faint); }
.about-nav-title{
  color: var(--about-muted);
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.about-nav-links{
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.about-nav-a{
  color: var(--about-muted);
  text-decoration: none;
  font-size: 13px;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  transition: background .12s ease, color .12s ease, border-color .12s ease;
}
.about-nav-a:hover{
  color: var(--about-blue-2);
  background: rgba(37,99,235,.06);
  border-color: rgba(29,78,216,.16);
}
.about-nav-a.is-active{
  color: var(--about-blue-2);
  background: rgba(37,99,235,.10);
  border-color: rgba(29,78,216,.22);
}
.about-nav-a:focus-visible{
  outline: 3px solid rgba(249,115,22,.35);
  outline-offset: 2px;
}

.about-nav-jump{ display: none; }
.about-select{
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(15,23,42,.12);
  background: rgba(255,255,255,.92);
  color: var(--about-text);
}

.about-layout{
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 18px;
  padding-top: 18px;
}

.about-main{ min-width: 0; }
.about-side{ min-width: 0; }

.about-sticky{
  position: sticky;
  top: 66px; /* accounts for sticky nav height */
}

.about-grid2{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--about-gap);
}
.about-grid3{
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--about-gap);
}
.about-gap-lg{ gap: var(--about-gap-lg); }

.about-prose p{
  margin: 0 0 10px;
  color: var(--about-muted);
  line-height: 1.8;
}
.about-prose a{
  color: #0f172ab8;
}
.about-prose strong{ color: var(--about-text); }

.about-list{
  margin: 0;
  padding-left: 18px;
  color: var(--about-muted);
  line-height: 1.55;
}
.about-list li{ margin: 6px 0; }

.about-kv-k{
  font-size: 12px;
  color: var(--about-faint);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin: 0 0 8px;
}

.about-actions{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.about-media-box{
  border-radius: 18px;
  border: 1px dashed rgba(29,78,216,.22);
  background: rgba(37,99,235,.04);
  min-height: 220px;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.about-mf li{margin-bottom:10px}
.about-media-placeholder{ text-align: center; color: var(--about-faint); }
.about-media-tag{
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(29,78,216,.20);
  background: rgba(37,99,235,.06);
  margin-bottom: 8px;
}
.about-media-text{ font-size: 13px; }
.about-timeline li{margin-bottom:15px}
.about-timeline{ list-style: none; padding: 0; margin: 0; }
.about-tl-item{
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(15,23,42,.08);
}
.about-tl-item:last-child{ border-bottom: 0; }
.about-tl-year{ font-weight: 650; color: var(--about-text); }
.about-tl-body{ color: var(--about-muted); line-height: 1.5; }

.about-steps{ margin: 0; padding-left: 18px; color: var(--about-muted); line-height: 1.55; }
.about-steps li{ margin: 8px 0; }
.about-steps-lg li{ margin: 10px 0; }

.about-docs{ display: grid; gap: 10px; margin-top: 6px; }
.about-doc{
  border: 1px solid rgba(15,23,42,.10);
  border-radius: 14px;
  padding: 12px;
  background: rgba(37,99,235,.04);
}
.about-doc-k{ font-size: 12px; color: var(--about-faint); margin-bottom: 6px; }
.about-doc-v{ color: var(--about-muted); line-height: 1.45; }

.about-evi{
  display: block;
  color: inherit;
  text-decoration: none;
  transition: transform .12s ease, border-color .12s ease, background .12s ease, box-shadow .12s ease;
}
.about-evi:hover{
  transform: translateY(-2px);
  border-color: rgba(29,78,216,.22);
  background: rgba(37,99,235,.06);
  box-shadow: var(--about-shadow-sm);
}
.about-evi:focus-visible{ outline: 3px solid rgba(249,115,22,.35); outline-offset: 2px; }

.about-evi-tag{
  display: inline-block;
  font-size: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(249,115,22,.22);
  background: rgba(249,115,22,.10);
  color: rgba(15,23,42,.72);
  margin-bottom: 10px;
}

.about-mt{ margin-top: 14px; }

.about-links{ margin: 0; padding-left: 18px; line-height: 1.55; color: var(--about-muted); }
.about-links li{ margin: 8px 0; }

.about-sr-only{
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;
  border:0;
}

/* Responsive */
@media (max-width: 980px){
  .about-hero-inner{ grid-template-columns: 1fr; }
  .about-layout{ grid-template-columns: 1fr; }
  .about-sticky{ position: static; top: auto; }
  .about-nav-inner{ grid-template-columns: 1fr auto auto; }
  .about-nav-links{ display: none; }
  .about-nav-jump{ display: block; }
}
@media (max-width: 680px){
  .about-grid2{ grid-template-columns: 1fr; }
  .about-grid3{ grid-template-columns: 1fr; }
  .about-tl-item{ grid-template-columns: 72px 1fr; }
}

/* Minor helpers */
.about-nav-cta{ display: flex; gap: 8px; justify-content: flex-end; flex-wrap: wrap; }

/* === Sticky nav harden + fixed fallback === */
.about-nav{
  position: -webkit-sticky;
  position: sticky;
}

/* JS fallback: when sticky is broken by theme wrappers, force fixed */
.about-nav.is-fixed{
  position: fixed !important;
  left: 0;
  right: 0;
  top: var(--about-fixed-top, 0px);
  z-index: 9999;
}

/* Spacer to prevent layout jump when nav becomes fixed */
.about-nav-spacer{
  display: none;
}
.about-nav-spacer.is-on{
  display: block;
}
.about-page .p-sum-crumbs{
  width: 100%;
  margin: 0;
  padding: 10px 0; /* vertical spacing only */
}

.about-page .p-sum-crumbs .all-sp-container{
  width: min(1290px, calc(100% - 48px)); /* 1200 + 左右各24px */
  margin: 0 auto;                        /* center container */
  padding: 0;                            /* keep clean */
  box-sizing: border-box;
}

/* Optional: slightly soften the breadcrumb line without affecting link colors */
.about-page .p-sum-crumbs{
  font-size: 13px;
  line-height: 1.4;
}


/* Video block (About Hub) */
.about-video{
  position: relative;
  width: 100%;
  aspect-ratio: 9 / 16;
  border-radius: 18px;
  overflow: hidden;
  background: rgba(15,23,42,.06);
}

.about-video__el{
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
}

.about-video__btn{
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%,-50%);
  width: 64px;
  height: 64px;
  border: 0;
  border-radius: 999px;
  background: rgba(0,0,0,.55);
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
}

.about-video.is-playing .about-video__btn{
  opacity: 0;
  pointer-events: none;
}
.about-video.is-fallback .about-video__btn{display:none;}
.about-video__btn{ z-index: 2; }
.about-video__el{ z-index: 1; }

/* 回退到原生 controls 时，隐藏自定义按钮，避免挡住控件 */
.about-video.is-fallback .about-video__btn{ display:none; }
/* About Hub video button fixes */
.about-video__btn{
  display: grid;
  place-items: center;
  z-index: 2;
}
.about-video__el{
  position: relative; /* make z-index meaningful in some browsers */
  z-index: 1;
}

/* triangle play icon */
.about-video__btn::before{
  content: "";
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 16px;
  border-color: transparent transparent transparent rgba(255,255,255,.95);
  transform: translateX(2px);
}

/* show pause icon when playing (two bars) */
.about-video.is-playing .about-video__btn::before{
  width: 16px;
  height: 16px;
  border: 0;
  background:
    linear-gradient(90deg, rgba(255,255,255,.95) 0 40%, transparent 40% 60%, rgba(255,255,255,.95) 60% 100%);
  transform: none;
}

/* when we fall back to native controls, don't cover them */
.about-video.is-fallback .about-video__btn{
  display: none;
}