:root{
  --ink:#15202a;
  --muted:#63707d;
  --paper:#f7f8fa;
  --panel:#fff;
  --line:#dce2e8;
  --accent:#246bfd;
  --accent2:#7d9fff;
  --radius:22px;
  --shadow:0 24px 70px rgba(18,31,47,.12);
  --max:1180px;
  color-scheme:light
}
*{
  box-sizing:border-box
}
html{
  scroll-behavior:smooth
}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  line-height:1.72;
  -webkit-font-smoothing:antialiased
}
img{
  display:block;
  max-width:100%;
  height:auto
}
a{
  color:inherit;
  text-decoration:none
}
button{
  font:inherit
}
p{
  margin:.65em 0
}
h1,h2,h3{
  margin:0;
  line-height:1.16;
  letter-spacing:-.035em
}
h1{
  font-size:clamp(2.35rem,5.8vw,5.75rem)
}
h2{
  font-size:clamp(1.55rem,3.1vw,2.7rem)
}
h3{
  font-size:1.15rem
}
ul,ol{
  padding-left:1.25rem
}
.shell{
  width:min(calc(100% - 40px),var(--max));
  margin-inline:auto
}
.skip-link{
  position:fixed;
  left:12px;
  top:-80px;
  z-index:999;
  background:#fff;
  color:#111;
  padding:10px 14px;
  border-radius:8px
}
.skip-link:focus{
  top:12px
}
.mobile-toggle{
  display:none;
  border:1px solid var(--line);
  background:var(--panel);
  border-radius:999px;
  padding:9px 13px;
  color:inherit
}
.mobile-nav{
  display:none
}
.mobile-nav[hidden]{
  display:none
}
.eyebrow{
  text-transform:uppercase;
  letter-spacing:.18em;
  font-size:.72rem;
  font-weight:800;
  color:var(--accent)
}
.lead{
  font-size:clamp(1rem,1.4vw,1.2rem);
  color:var(--muted);
  max-width:68ch
}
.button{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:46px;
  padding:0 18px;
  border-radius:999px;
  font-weight:750;
  border:1px solid transparent;
  transition:.2s ease
}
.button:hover{
  transform:translateY(-2px)
}
.button-primary{
  background:var(--accent);
  color:#fff
}
.button-ghost{
  border-color:var(--line);
  background:color-mix(in srgb,var(--panel) 82%,transparent)
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:6px 10px;
  border-radius:999px;
  background:color-mix(in srgb,var(--accent) 10%,transparent);
  color:var(--accent);
  font-size:.78rem;
  font-weight:750
}
.site-header a:focus-visible,.site-footer a:focus-visible,.button:focus-visible,.mobile-toggle:focus-visible{
  outline:3px solid color-mix(in srgb,var(--accent) 45%,transparent);
  outline-offset:3px
}
.section-head{
  display:flex;
  align-items:end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:28px
}
.section-head p{
  max-width:55ch;
  color:var(--muted)
}
.card-link{
  font-weight:800;
  color:var(--accent)
}
.card-link::after{
  content:" →"
}
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  align-items:center;
  font-size:.84rem;
  color:var(--muted)
}
.breadcrumbs span{
  opacity:.55
}
.page-hero{
  padding:72px 0 40px
}
.page-hero h1{
  font-size:clamp(2.2rem,5vw,4.6rem);
  max-width:15ch;
  margin-top:16px
}
.page-hero .lead{
  margin-top:20px
}
.article-figure{
  margin:28px 0;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--panel)
}
.article-figure img{
  width:100%;
  aspect-ratio:16/8;
  object-fit:cover
}
.article-figure figcaption{
  padding:11px 15px;
  color:var(--muted);
  font-size:.82rem
}
.article-copy p{
  color:color-mix(in srgb,var(--ink) 80%,var(--muted));
  font-size:1.02rem
}
.article-copy h2{
  margin:42px 0 14px;
  font-size:clamp(1.35rem,2.7vw,2.15rem)
}
.article-copy table{
  width:100%;
  border-collapse:collapse;
  margin:20px 0
}
.article-copy th,.article-copy td{
  padding:13px;
  border:1px solid var(--line);
  text-align:left
}
.article-copy li+li{
  margin-top:8px
}
.article-note{
  margin:26px 0;
  padding:20px 22px;
  border-left:4px solid var(--accent);
  background:color-mix(in srgb,var(--accent) 7%,var(--panel));
  border-radius:0 16px 16px 0
}
.article-close{
  margin-top:42px;
  padding:24px;
  border-radius:var(--radius);
  background:var(--ink);
  color:#fff
}
.article-close p{
  color:rgba(255,255,255,.82)
}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
  margin-top:28px
}
.related-card{
  padding:19px;
  border:1px solid var(--line);
  border-radius:18px;
  background:var(--panel)
}
.related-card span{
  display:block;
  color:var(--accent);
  font-size:.74rem;
  font-weight:800;
  margin-bottom:8px
}
.info-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:28px;
  padding:30px 0 80px
}
.info-panel{
  padding:30px;
  border-radius:var(--radius);
  background:var(--panel);
  border:1px solid var(--line)
}
.info-panel h2{
  font-size:1.5rem;
  margin-bottom:14px
}
.policy-list{
  display:grid;
  gap:12px;
  padding:0;
  list-style:none
}
.policy-list li{
  padding:14px 0;
  border-bottom:1px solid var(--line)
}
.site-footer{
  margin-top:70px;
  padding:48px 0 26px;
  border-top:1px solid var(--line)
}
.footer-grid{
  display:grid;
  grid-template-columns:1.25fr repeat(2,.75fr);
  gap:28px
}
.footer-grid h2{
  font-size:1rem;
  margin-bottom:12px
}
.footer-grid a{
  display:block;
  color:var(--muted);
  margin:7px 0
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:20px;
  border-top:1px solid var(--line);
  margin-top:30px;
  padding-top:20px;
  color:var(--muted);
  font-size:.82rem
}
.error-page{
  min-height:70vh;
  display:grid;
  place-items:center;
  text-align:center;
  padding:70px 20px
}
.error-page strong{
  font-size:clamp(6rem,20vw,14rem);
  line-height:.8;
  color:color-mix(in srgb,var(--accent) 22%,transparent)
}
@media(max-width:820px){
  .shell{
    width:min(calc(100% - 28px),var(--max))
  }
  .desktop-nav{
    display:none!important
  }
  .mobile-toggle{
    display:inline-flex
  }
  .mobile-nav{
    position:absolute;
    left:14px;
    right:14px;
    top:calc(100% + 8px);
    z-index:40;
    padding:12px;
    border-radius:18px;
    background:var(--panel);
    border:1px solid var(--line);
    box-shadow:var(--shadow)
  }
  .mobile-nav:not([hidden]){
    display:grid
  }
  .mobile-nav a{
    padding:11px 12px;
    border-radius:10px
  }
  .mobile-nav a:hover{
    background:color-mix(in srgb,var(--accent) 8%,transparent)
  }
  .site-header{
    position:relative
  }
  .section-head{
    display:block
  }
  .related-grid,.info-grid,.footer-grid{
    grid-template-columns:1fr
  }
  .footer-bottom{
    display:block
  }
  .page-hero{
    padding-top:48px
  }
  .article-copy{
    font-size:.98rem
  }
}
@media(prefers-reduced-motion:reduce){
  *{
    scroll-behavior:auto!important;
    transition:none!important
  }
}
:root{
  --ink:#14243d;
  --muted:#687287;
  --paper:#f2eee4;
  --panel:#fffdf6;
  --line:#c9c2b2;
  --accent:#d07a1f;
  --accent2:#274e78;
  --radius:0;
  --shadow:10px 12px 0 rgba(20,36,61,.1)
}
body{
  background:repeating-linear-gradient(0deg,transparent 0 31px,rgba(20,36,61,.035) 32px),var(--paper)
}
.bulletin-top{
  background:var(--ink);
  color:#fff;
  padding:8px 0;
  font:700 .72rem ui-monospace,monospace;
  letter-spacing:.1em
}
.bulletin-top .shell{
  display:flex;
  justify-content:space-between
}
.bulletin-header{
  padding:26px 0 0
}
.bulletin-mast{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:end;
  border-bottom:4px solid var(--ink);
  padding-bottom:20px
}
.bulletin-brand{
  font-family:"Arial Black","PingFang SC",sans-serif;
  font-size:clamp(1.7rem,4vw,3rem);
  letter-spacing:-.05em
}
.bulletin-edition{
  text-align:center;
  font:700 .72rem ui-monospace,monospace
}
.bulletin-mast .mobile-toggle{
  justify-self:end
}
.bulletin-nav{
  border-bottom:1px solid var(--ink)
}
.bulletin-nav .desktop-nav{
  display:flex;
  gap:0
}
.bulletin-nav a{
  padding:11px 16px;
  border-right:1px solid var(--ink);
  font-weight:750;
  font-size:.84rem
}
.bulletin-hero{
  padding:62px 0 46px;
  display:grid;
  grid-template-columns:150px 1fr 280px;
  gap:30px
}
.bulletin-index{
  border-right:1px solid var(--ink);
  font:800 .76rem ui-monospace,monospace
}
.bulletin-index span{
  display:block;
  margin-bottom:22px
}
.bulletin-hero h1{
  font-family:"Arial Black","PingFang SC",sans-serif
}
.bulletin-hero .lead{
  margin-top:22px
}
.bulletin-stamp{
  border:3px double var(--accent);
  color:var(--accent);
  display:grid;
  place-items:center;
  text-align:center;
  min-height:180px;
  transform:rotate(2deg);
  font-weight:900
}
.bulletin-board{
  padding:50px 0
}
.bulletin-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:2px solid var(--ink);
  border-left:1px solid var(--ink)
}
.bulletin-card{
  padding:24px;
  border-right:1px solid var(--ink);
  border-bottom:1px solid var(--ink);
  background:rgba(255,253,246,.78)
}
.bulletin-card b{
  font:900 2.5rem ui-monospace,monospace;
  color:var(--accent)
}
.bulletin-card h2{
  font-size:1.35rem;
  margin:15px 0
}
.maintenance-ledger{
  padding:60px 0 90px
}
.ledger-row{
  display:grid;
  grid-template-columns:90px 1fr 2fr auto;
  gap:22px;
  border-top:1px solid var(--ink);
  padding:22px 0;
  align-items:start
}
.ledger-row:last-child{
  border-bottom:1px solid var(--ink)
}
.ledger-row b{
  font:900 .78rem ui-monospace,monospace;
  color:var(--accent)
}
.ledger-row p{
  color:var(--muted);
  margin:0
}
.bulletin-page{
  padding-bottom:90px
}
.notice-sheet{
  background:var(--panel);
  border:1px solid var(--ink);
  box-shadow:var(--shadow);
  padding:clamp(24px,6vw,64px);
  max-width:980px;
  margin:auto
}
.notice-head{
  display:grid;
  grid-template-columns:100px 1fr;
  gap:26px;
  border-bottom:4px double var(--ink);
  padding-bottom:24px
}
.notice-code{
  font:900 2.2rem ui-monospace,monospace;
  color:var(--accent)
}
.notice-sheet .article-figure{
  border-radius:0
}
.notice-sheet .article-copy h2{
  border-top:1px solid var(--ink);
  padding-top:20px
}
@media(max-width:900px){
  .bulletin-hero{
    grid-template-columns:1fr
  }
  .bulletin-index{
    border-right:0;
    border-bottom:1px solid var(--ink);
    display:flex;
    gap:20px
  }
  .bulletin-stamp{
    max-width:260px
  }
  .bulletin-grid{
    grid-template-columns:1fr 1fr
  }
  .ledger-row{
    grid-template-columns:70px 1fr
  }
  .ledger-row p,.ledger-row .card-link{
    grid-column:2
  }
  .notice-head{
    grid-template-columns:1fr
  }
  .bulletin-nav{
    display:none
  }
}
@media(max-width:560px){
  .bulletin-grid{
    grid-template-columns:1fr
  }
  .bulletin-mast{
    grid-template-columns:1fr auto
  }
  .bulletin-edition{
    display:none
  }
}
.home-expanded{
  padding-top:22px
}
.home-expanded section,.home-expanded aside{
  scroll-margin-top:90px
}
.home-expanded h2{
  max-width:20ch
}
.home-expanded h3{
  letter-spacing:-.02em
}
.home-expanded p,.home-expanded li{
  color:var(--muted)
}
.software-topic{
  margin-top:24px;
  padding-top:18px;
  border-top:1px solid var(--line)
}
.software-topic h3{
  font-size:1.05rem;
  margin-bottom:7px
}
.software-topic p{
  margin:0
}
.software-topic strong{
  color:var(--ink)
}
.home-expanded details summary{
  cursor:pointer;
  font-weight:800;
  list-style:none
}
.home-expanded details summary::-webkit-details-marker{
  display:none
}
.home-expanded details summary::after{
  content:"＋";
  float:right;
  color:var(--accent)
}
.home-expanded details[open] summary::after{
  content:"－"
}
.home-expanded details p{
  margin:12px 0 0
}
.bulletin-product-notice{
  display:grid;
  grid-template-columns:180px 1fr;
  gap:35px;
  padding:70px 0;
  border-top:3px solid var(--ink);
  border-bottom:1px solid var(--ink)
}
.bulletin-product-notice .notice-code{
  font:800 .78rem ui-monospace,monospace;
  color:var(--accent)
}
.bulletin-definition{
  columns:2
}
.bulletin-definition .eyebrow,.bulletin-definition h2{
  column-span:all
}
.bulletin-definition h2{
  margin:10px 0 20px
}
.bulletin-capability-ledger{
  padding:65px 0
}
.bulletin-capability{
  display:grid;
  grid-template-columns:90px 220px 1fr;
  padding:20px 0;
  border-top:1px solid var(--ink)
}
.bulletin-capability b{
  color:var(--accent)
}
.bulletin-capability p{
  margin:0
}
.bulletin-procedure{
  background:var(--ink);
  color:#fff;
  padding:65px 0
}
.bulletin-procedure>.shell{
  display:grid;
  grid-template-columns:.8fr 1.2fr;
  gap:50px
}
.bulletin-procedure h2{
  margin:10px 0 22px
}
.bulletin-scene,.bulletin-step{
  padding:19px 0;
  border-top:1px solid rgba(255,255,255,.28)
}
.bulletin-scene b,.bulletin-step b{
  color:#ef9c3d
}
.bulletin-scene p,.bulletin-step p{
  color:#cdd6e2
}
.bulletin-bottom{
  display:grid;
  grid-template-columns:.72fr 1.28fr;
  gap:45px;
  padding:75px 0
}
.bulletin-boundary{
  border:2px solid var(--accent);
  padding:28px;
  align-self:start
}
.bulletin-boundary h2{
  font-size:1.5rem
}
.bulletin-bottom>section>h2{
  margin:10px 0 22px
}
.bulletin-faq-row{
  display:grid;
  grid-template-columns:75px 220px 1fr;
  padding:18px 0;
  border-top:1px solid var(--ink)
}
.bulletin-faq-row span{
  font:700 .72rem ui-monospace,monospace;
  color:var(--accent)
}
.bulletin-faq-row p{
  margin:0
}
@media(max-width:820px){
  .bulletin-product-notice,.bulletin-procedure>.shell,.bulletin-bottom{
    grid-template-columns:1fr
  }
  .bulletin-definition{
    columns:1
  }
  .bulletin-capability,.bulletin-faq-row{
    grid-template-columns:62px 1fr
  }
  .bulletin-capability p,.bulletin-faq-row p{
    grid-column:2
  }
}
.legal-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px;
  padding-bottom:28px
}
.legal-support{
  padding:22px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--panel)
}
@media(max-width:760px){
  .legal-grid{
    grid-template-columns:1fr
  }
}