:root{
  --paper:#F4EFE4;
  --card:#FFF9EC;
  --ink:#0E1B2A;
  --ink-2:#27384C;
  --line:#C7CED6;
  --cyan:#00C2D1;
  --cyan-deep:#00707A;
  --orange:#FF6B2C;
  --orange-deep:#A83A0C;
  --green:#1F9D6A;
  --green-deep:#0E6B48;
  --violet:#6C5CE7;
  --violet-deep:#4A3BC4;
  --console:#07131F;
  --head-h:98px;
  --font-head:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono","Courier New",monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--head-h) + 16px)}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img,svg,video{max-width:100%}
h1,h2,h3,h4{font-family:var(--font-head);font-weight:800;line-height:1.25;letter-spacing:.01em}
h1{font-weight:900}
p{margin:0 0 1em}
a{color:inherit}
ul,ol{padding-left:1.25em}
button{font:inherit}
:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}

.wrap{width:min(1160px,100% - 40px);margin-inline:auto}
.wrap--narrow{width:min(760px,100% - 40px);margin-inline:auto}

.skip-link{
  position:absolute;left:12px;top:-70px;z-index:999;
  background:var(--ink);color:var(--paper);
  font-family:var(--font-mono);font-size:13px;letter-spacing:.08em;
  padding:12px 18px;border:2px solid var(--cyan);text-decoration:none;
  transition:top .2s ease;
}
.skip-link:focus{top:12px}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:80;
  background:var(--paper);
  border-bottom:3px solid var(--ink);
}
.cmdbar{background:var(--ink);color:#D7DFE7}
.cmdbar__in{
  display:flex;align-items:center;gap:20px;
  min-height:34px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
}
.cmdbar__brand{margin:0;color:#FFFFFF;font-weight:700;white-space:nowrap}
.cmdbar__hint{
  margin:0;flex:1;min-width:0;
  color:#96A7B6;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.cmdbar__code{margin:0 0 0 auto;color:var(--cyan);white-space:nowrap}

.navdock{position:relative;background:var(--paper)}
.navdock__in{display:flex;align-items:center;gap:18px;min-height:64px}

.brandmark{display:flex;align-items:center;gap:11px;text-decoration:none;color:inherit;flex:0 0 auto}
.brandmark__glyph{
  width:36px;height:36px;display:grid;place-items:center;
  background:var(--ink);color:var(--paper);
  font-family:var(--font-head);font-size:19px;font-weight:900;
  box-shadow:4px 4px 0 var(--cyan);
}
.brandmark__text{display:block}
.brandmark__name{display:block;font-family:var(--font-head);font-size:17px;font-weight:800;letter-spacing:.08em;line-height:1.2}
.brandmark__sub{display:block;font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;color:var(--ink-2);line-height:1.4}

.sitenav{margin-left:auto}
.sitenav__list{
  display:flex;align-items:center;gap:2px;
  margin:0;padding:0;list-style:none;
}
.sitenav__item{display:block}
.sitenav__link{
  display:flex;align-items:baseline;gap:6px;
  padding:9px 11px;
  color:var(--ink-2);text-decoration:none;
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border-bottom:3px solid transparent;
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.sitenav__link:hover{color:var(--ink);border-bottom-color:var(--cyan);background:rgba(0,194,209,.09)}
.sitenav__link[aria-current="page"]{color:var(--ink);border-bottom-color:var(--ink);background:rgba(0,194,209,.05)}
.sitenav__link[aria-current="page"] .sitenav__idx{color:var(--cyan-deep)}
.sitenav__idx{font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;color:var(--line)}

.navtoggle{
  display:none;margin-left:auto;align-items:center;gap:9px;
  padding:10px 14px;
  background:var(--ink);color:var(--paper);
  border:2px solid var(--ink);cursor:pointer;
  font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.1em;
}
.navtoggle__bars{display:grid;gap:4px}
.navtoggle__bars span{display:block;width:16px;height:2px;background:currentColor}
.navtoggle[aria-expanded="true"]{background:var(--cyan);color:var(--ink);border-color:var(--ink)}

.progress{height:3px;background:rgba(14,27,42,.14)}
.progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  transition:width .12s linear;
}

/* ---------- footer ---------- */
.site-foot{background:var(--console);color:#C3CEDA;margin-top:64px}
.footgrid{
  display:grid;grid-template-columns:1fr 1fr 1.35fr;gap:34px;
  padding:58px 0 44px;align-items:start;
}
.footcol{min-width:0}
.footcol__title{
  margin:0 0 16px;
  font-family:var(--font-mono);font-size:13px;font-weight:700;
  letter-spacing:.16em;color:#FFFFFF;
}
.footcol__tag{
  display:inline-block;margin:0 0 12px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;
  color:var(--console);background:var(--cyan);padding:3px 8px;
}
.footcol__note{margin:0 0 18px;font-size:14px;line-height:1.7;color:#A9B8C6}
.footcol--guide{
  background:var(--ink);
  border:3px solid var(--cyan);
  padding:22px 22px 24px;
  box-shadow:10px 10px 0 rgba(0,194,209,.2);
}
.footcol--guide .footcol__title{color:#FFFFFF;font-family:var(--font-head);font-size:17px;letter-spacing:.04em;margin-bottom:10px}
.footlinks{list-style:none;margin:0;padding:0;display:grid;gap:11px}
.footlink{
  display:inline-block;
  color:#9FB0C0;text-decoration:none;font-size:15px;
  border-bottom:1px solid transparent;padding-bottom:2px;
  transition:color .2s ease,border-color .2s ease;
}
.footlink:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

.footmeta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px 26px;
  padding:22px 0 36px;
  border-top:1px solid rgba(199,206,214,.22);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.05em;
  color:#8B9BAB;
}
.footmeta__contact{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px}
.footmeta__addr{margin:0;color:#8B9BAB}
.footmeta__legal{margin:0 0 0 auto}
.footmeta__year{margin:0}

.copyfield{
  display:inline-flex;align-items:center;gap:9px;
  background:transparent;cursor:pointer;
  border:1px dashed rgba(199,206,214,.45);
  padding:6px 10px;color:#C3CEDA;
  font-family:var(--font-mono);font-size:12px;
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.copyfield__key{color:#7E8FA0}
.copyfield__val{color:#E7EEF5}
.copyfield:hover{border-color:var(--cyan);color:var(--cyan)}
.copyfield:hover .copyfield__val{color:var(--cyan)}
.copyfield[data-copied]{
  border-style:solid;border-color:var(--green);background:rgba(31,157,106,.16);
}
.copyfield[data-copied] .copyfield__key{color:#7FE0B4}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  padding:11px 18px;
  font-family:var(--font-mono);font-size:13px;font-weight:700;letter-spacing:.08em;
  text-decoration:none;cursor:pointer;
  background:var(--card);color:var(--ink);
  border:2px solid var(--ink);
  transition:transform .16s ease,box-shadow .16s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink)}
.btn--solid{background:var(--ink);color:var(--paper)}
.btn--solid:hover{box-shadow:6px 6px 0 var(--cyan)}
.btn--ghost{background:transparent;color:var(--cyan);border-color:var(--cyan)}
.btn--ghost:hover{background:rgba(0,194,209,.12);box-shadow:6px 6px 0 rgba(0,194,209,.35)}

/* ---------- breadcrumb ---------- */
.crumbs{margin:24px 0 0}
.crumbs__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:9px;
  margin:0;padding:0;list-style:none;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--ink-2);
}
.crumbs__list li{display:flex;align-items:center;gap:9px}
.crumbs__list li + li::before{content:"/";color:var(--line)}
.crumbs__list a{color:var(--ink-2);text-decoration:none;border-bottom:1px solid var(--line)}
.crumbs__list a:hover{color:var(--ink);border-bottom-color:var(--cyan)}
.crumbs__list [aria-current="page"]{color:var(--cyan-deep)}

/* ---------- sections ---------- */
.section{padding:64px 0}
.section--tight{padding:42px 0}
.section--paper{background:var(--paper)}
.section--card{background:var(--card);border-top:2px solid var(--ink);border-bottom:2px solid var(--ink)}
.section--ink{background:var(--ink);color:var(--paper)}
.section--console{background:var(--console);color:#C3CEDA}
.section--ink .section-lead,.section--console .section-lead{color:#A9B8C6}
.section--ink .kicker,.section--console .kicker{color:var(--cyan)}

.kicker{
  display:flex;align-items:center;gap:10px;
  margin:0 0 12px;
  font-family:var(--font-mono);font-size:12px;font-weight:700;
  letter-spacing:.2em;color:var(--cyan-deep);
}
.kicker::before{content:"";width:24px;height:2px;background:currentColor;display:block}
.section-title{margin:0 0 14px;font-size:clamp(26px,3.4vw,38px);font-weight:900;line-height:1.2}
.section-lead{margin:0;max-width:64ch;font-size:16px;color:var(--ink-2)}

.prose{max-width:72ch}
.prose h2{font-size:clamp(22px,2.6vw,28px);margin:38px 0 12px;font-weight:800}
.prose h3{font-size:19px;margin:26px 0 8px;font-weight:800}
.prose p{margin:0 0 16px}
.prose ul,.prose ol{margin:0 0 18px;padding-left:1.3em}
.prose li{margin-bottom:8px}
.prose a{color:var(--ink);text-decoration:none;border-bottom:2px solid var(--cyan)}
.prose a:hover{border-bottom-color:var(--ink)}
.prose strong{font-weight:800}

/* ---------- grid ---------- */
.grid{display:grid;gap:20px}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--asym{grid-template-columns:repeat(12,minmax(0,1fr));gap:22px}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-9{grid-column:span 9}
.col-12{grid-column:span 12}

/* ---------- index card ---------- */
.idx-card{
  display:flex;flex-direction:column;gap:9px;
  background:var(--card);
  border:2px solid var(--ink);
  padding:20px;
  box-shadow:7px 7px 0 var(--line);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.idx-card:hover{border-color:var(--ink);box-shadow:7px 7px 0 var(--ink);transform:translate(-2px,-2px)}
.idx-card__idx{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--ink-2)}
.idx-card__title{margin:0;font-size:18px;font-weight:800;line-height:1.35}
.idx-card__text{margin:0;font-size:15px;color:var(--ink-2)}
.idx-card__title a{text-decoration:none;color:inherit}
.idx-card__title a:hover{color:var(--cyan-deep)}

/* ---------- tags & status ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.12em;
  padding:4px 9px;border:1px solid currentColor;
  color:var(--ink-2);
}
.tag--cyan{color:var(--cyan-deep);border-color:var(--cyan);background:rgba(0,194,209,.14)}
.tag--orange{color:var(--orange-deep);border-color:var(--orange);background:rgba(255,107,44,.14)}
.tag--green{color:var(--green-deep);border-color:var(--green);background:rgba(31,157,106,.14)}
.tag--violet{color:var(--violet-deep);border-color:var(--violet);background:rgba(108,92,231,.14)}
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--green);vertical-align:middle}

/* ---------- media ---------- */
.media{
  position:relative;
  background:var(--card);
  border:3px solid var(--ink);
  box-shadow:10px 10px 0 var(--line);
  overflow:hidden;
}
.media img,.media svg,.media video{display:block;width:100%;height:100%;object-fit:cover}
.media__stage{
  width:100%;aspect-ratio:4/3;
  display:grid;place-items:center;text-align:center;padding:18px;
  color:var(--ink-2);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:100% 30px,30px 100%;
  background-color:var(--card);
}
.media--wide .media__stage{aspect-ratio:16/9}
.media--tall .media__stage{aspect-ratio:3/4}
.media__cap{
  border-top:2px solid var(--ink);
  background:var(--ink);color:var(--paper);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  padding:9px 13px;
}

/* ---------- reveal ---------- */
html.js-ready [data-reveal]{opacity:0;transform:translateY(16px)}
html.js-ready [data-reveal].is-in{
  opacity:1;transform:none;
  transition:opacity .55s ease,transform .55s cubic-bezier(.2,.7,.3,1);
  transition-delay:var(--reveal-delay,0ms);
}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .footgrid{grid-template-columns:1fr 1fr;gap:30px}
  .footcol--guide{grid-column:span 2}
}
@media (max-width:960px){
  :root{--head-h:67px}
  .cmdbar__in{min-height:30px;font-size:11px;gap:12px}
  .cmdbar__hint{display:none}
  .navdock__in{min-height:60px;gap:12px}
  .navtoggle{display:inline-flex}
  .sitenav{
    display:none;
    position:absolute;left:0;right:0;top:100%;
    margin-left:0;
    background:var(--card);
    border-bottom:3px solid var(--ink);
    box-shadow:0 14px 24px rgba(7,19,31,.18);
    max-height:calc(100vh - var(--head-h));
    overflow-y:auto;
  }
  .sitenav[data-open]{display:block}
  .sitenav__list{flex-direction:column;align-items:stretch;gap:0}
  .sitenav__item{border-bottom:1px solid var(--line)}
  .sitenav__item:last-child{border-bottom:0}
  .sitenav__link{
    border-bottom:0;border-left:4px solid transparent;
    padding:15px 22px;font-size:16px;
  }
  .sitenav__link:hover{background:rgba(0,194,209,.09);border-left-color:var(--cyan)}
  .sitenav__link[aria-current="page"]{
    background:rgba(0,194,209,.13);
    border-left-color:var(--cyan);
  }
  .grid--asym{grid-template-columns:repeat(6,minmax(0,1fr))}
  .col-4,.col-5,.col-6,.col-7,.col-8,.col-9{grid-column:span 6}
}
@media (max-width:760px){
  .section{padding:48px 0}
  .section--tight{padding:34px 0}
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
  .footgrid{grid-template-columns:minmax(0,1fr);padding:44px 0 32px}
  .footcol--guide{grid-column:auto}
  .footmeta{flex-direction:column;align-items:flex-start;gap:16px}
  .footmeta__legal{margin:0}
  .media{box-shadow:6px 6px 0 var(--line)}
}
@media (max-width:600px){
  .wrap,.wrap--narrow{width:min(1160px,100% - 28px)}
  .cmdbar__brand{font-size:10px;letter-spacing:.04em}
  .cmdbar__code{font-size:10px}
  .brandmark__glyph{width:32px;height:32px;font-size:17px;box-shadow:3px 3px 0 var(--cyan)}
  .brandmark__name{font-size:15px}
  .brandmark__sub{font-size:9px;letter-spacing:.14em}
  .btn{padding:10px 15px;font-size:12px}
  .idx-card{padding:16px;box-shadow:5px 5px 0 var(--line)}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  html.js-ready [data-reveal]{opacity:1;transform:none}
  html.js-ready [data-reveal].is-in{transition:none}
  .btn:hover{transform:none}
  .idx-card:hover{transform:none}
  .progress__bar{transition:none}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
}