:root{
  --bg:#E8EBF9;
  --bg-panel:#F5F7FD;
  --bg-panel-2:#DCE2F3;
  --border:#C6CFE6;
  --accent:#2823CC;
  --accent-dark:#1B178F;
  --accent-2:#38B6F2;
  --text:#12163A;
  --text-muted:#5A6189;
  --success:#1C9A6C;
  --warn:#D9910F;
  --error:#D63B4B;
  --white:#FFFFFF;
  --black:#111111;
  --win:#141A3A;
  --win-2:#1A2049;
  --win-text:#E6E9F7;
  --win-muted:#8B92BF;
  --win-border:rgba(255,255,255,.08);
  --white-03:rgba(255,255,255,.03);
  --white-06:rgba(255,255,255,.06);
  --white-08:rgba(255,255,255,.08);
  --white-12:rgba(255,255,255,.12);
  --accent-06:rgba(40,35,204,.06);
  --accent-10:rgba(40,35,204,.10);
  --accent-12:rgba(40,35,204,.12);
  --accent-14:rgba(40,35,204,.14);
  --accent-20:rgba(40,35,204,.20);
  --accent-24:rgba(40,35,204,.24);
  --accent-30:rgba(40,35,204,.30);
  --accent-40:rgba(40,35,204,.40);
  --accent2-14:rgba(56,182,242,.14);
  --accent2-24:rgba(56,182,242,.24);
  --accent2-55:rgba(56,182,242,.55);
  --success-12:rgba(28,154,108,.12);
  --success-24:rgba(28,154,108,.24);
  --error-12:rgba(214,59,75,.12);
  --warn-12:rgba(217,145,15,.12);
  --dot:rgba(40,35,204,.13);
  --shadow-panel:0 28px 70px -28px var(--accent-24);
  --shadow-soft:0 16px 40px -24px var(--accent-30);
  --tl-r:#FF5F57;
  --tl-y:#FEBC2E;
  --tl-g:#28C840;
  --flag-red:#D8232A;
  --flag-blue:#1F3F94;
  --flag-white:#FFFFFF;
  --flag-gold:#F5C400;
  --flag-black:#111111;
  --flag-outline:rgba(18,22,58,.18);
  --font-display:'Inter','Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Hiragino Kaku Gothic ProN','Apple SD Gothic Neo','Malgun Gothic',sans-serif;
  --font-body:'Inter','Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Hiragino Kaku Gothic ProN','Apple SD Gothic Neo','Malgun Gothic',sans-serif;
  --font-mono:'JetBrains Mono','SF Mono',Menlo,Consolas,'Liberation Mono',monospace;
  --r-pill:999px;
  --r-xl:32px;
  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --r-xs:8px;
  --nav-h:68px;
  --container:1200px;
  --content:820px;
  --gutter:24px;
  --section-space:96px;
  --focus-width:2px;
  --toc-offset:132px;
}
*,
*::before,
*::after{
  box-sizing:border-box;
}
html{
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--nav-h) + 16px);
  -webkit-text-size-adjust:100%;
}
html.nav-open{
  overflow:hidden;
}
body{
  margin:0;
  min-width:320px;
  overflow-x:clip;
  color:var(--text);
  background-color:var(--bg);
  background-image:radial-gradient(var(--dot) 1px,transparent 1.4px);
  background-size:26px 26px;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
main,
section,
article,
aside,
header,
footer,
nav{
  min-width:0;
}
img,
video{
  display:block;
  max-width:100%;
  height:auto;
}
svg{
  display:block;
  flex-shrink:0;
}
button,
input,
select,
textarea{
  font:inherit;
}
button{
  color:inherit;
}
a{
  color:inherit;
  text-decoration:none;
}
p,
ul,
ol,
dl,
blockquote,
figure{
  margin-top:0;
}
ul,
ol{
  padding-left:1.25rem;
}
nav ul,
.clean-list{
  margin:0;
  padding:0;
  list-style:none;
}
h1,
h2,
h3,
h4{
  margin-top:0;
  color:var(--text);
  font-family:var(--font-display);
  text-wrap:balance;
}
h1{
  margin-bottom:24px;
  font-size:clamp(52px,5.4vw,68px);
  font-weight:900;
  line-height:1.1;
  letter-spacing:-.02em;
}
h2{
  margin-bottom:18px;
  font-size:clamp(32px,4vw,48px);
  font-weight:850;
  line-height:1.16;
  letter-spacing:-.018em;
}
h3{
  margin-bottom:12px;
  font-size:clamp(21px,2.4vw,28px);
  font-weight:800;
  line-height:1.25;
}
h4{
  margin-bottom:8px;
  font-size:18px;
  font-weight:750;
  line-height:1.35;
}
p{
  margin-bottom:1.15em;
}
strong{
  font-weight:750;
}
code,
kbd,
samp{
  font-family:var(--font-mono);
}
:not(pre)>code{
  padding:.16em .4em;
  overflow-wrap:anywhere;
  border:1px solid var(--border);
  border-radius:var(--r-xs);
  background:var(--bg-panel-2);
  color:var(--accent-dark);
  font-size:.9em;
}
pre{
  max-width:100%;
  margin:24px 0;
  padding:20px;
  overflow-x:auto;
  border:1px solid var(--win-border);
  border-radius:var(--r-md);
  background:var(--win);
  color:var(--win-text);
  font-family:var(--font-mono);
  font-size:14px;
  line-height:1.7;
  tab-size:2;
  -webkit-overflow-scrolling:touch;
}
pre code{
  white-space:pre;
}
hr{
  height:1px;
  margin:40px 0;
  border:0;
  background:var(--border);
}
::selection{
  background:var(--accent-20);
  color:var(--text);
}
a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[role="tab"]:focus-visible{
  outline:var(--focus-width) solid var(--accent);
  outline-offset:3px;
}
.sr-only,
.sr{
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;
  border:0;
}
.no-break{
  white-space:nowrap;
}
.wrap,
.container{
  width:100%;
  max-width:var(--container);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.content-wrap{
  width:100%;
  max-width:var(--content);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section,
.sec{
  position:relative;
  padding-top:var(--section-space);
  padding-bottom:var(--section-space);
  overflow-x:clip;
}
.section-head{
  max-width:760px;
  margin:0 auto 48px;
  text-align:center;
}
.section-head p{
  margin-bottom:0;
  color:var(--text-muted);
  font-size:18px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:30px;
  margin-bottom:16px;
  padding:4px 13px;
  border:1px solid var(--border);
  border-radius:var(--r-pill);
  background:var(--bg-panel);
  color:var(--text-muted);
  box-shadow:0 1px 0 var(--white) inset;
  font-size:13px;
  font-weight:700;
}
.eyebrow-dot{
  width:8px;
  height:8px;
  flex-shrink:0;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 3px var(--accent-14);
}
.lead{
  color:var(--text-muted);
  font-size:clamp(17px,2vw,20px);
  line-height:1.7;
}
.muted{
  color:var(--text-muted);
}
.mono{
  font-family:var(--font-mono);
}
.numeric,
[data-counter]{
  min-width:2.5ch;
  display:inline-block;
  font-variant-numeric:tabular-nums;
}
.card,
.panel{
  min-width:0;
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  background:var(--bg-panel);
  box-shadow:0 1px 0 var(--white) inset,var(--shadow-soft);
}
.card{
  padding:28px;
}
.panel{
  padding:32px;
}
.badge,
.chip,
.tag{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:7px;
  min-height:28px;
  max-width:100%;
  padding:4px 11px;
  overflow:hidden;
  border:1px solid var(--border);
  border-radius:var(--r-pill);
  background:var(--bg-panel);
  color:var(--text-muted);
  font-size:12px;
  font-weight:700;
  line-height:1.2;
}
.badge-accent{
  border-color:var(--accent-20);
  background:var(--accent-10);
  color:var(--accent);
}
.badge-success{
  border-color:var(--success-24);
  background:var(--success-12);
  color:var(--success);
}
.badge-warn{
  border-color:var(--warn-12);
  background:var(--warn-12);
  color:var(--warn);
}
.btn{
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-width:44px;
  min-height:48px;
  padding:10px 22px;
  border:1px solid transparent;
  border-radius:var(--r-pill);
  cursor:pointer;
  font-size:15px;
  font-weight:750;
  line-height:1.2;
  transition:transform .16s ease,border-color .16s ease,background-color .16s ease,box-shadow .16s ease;
}
.btn svg{
  width:20px;
  height:20px;
}
.btn-primary{
  border-color:var(--text);
  background:var(--text);
  color:var(--bg-panel);
  box-shadow:0 14px 30px -12px var(--accent-40);
}
.btn-primary::after{
  content:"";
  position:absolute;
  right:14px;
  bottom:-1px;
  left:14px;
  height:3px;
  border-radius:var(--r-pill);
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
}
.btn-secondary{
  border-color:var(--border);
  background:var(--bg-panel);
  color:var(--text);
  box-shadow:0 1px 0 var(--white) inset;
}
.btn-ghost{
  border-color:var(--border);
  background:transparent;
  color:var(--text);
}
.btn-danger{
  border-color:var(--error);
  background:var(--error);
  color:var(--white);
}
.btn:disabled,
.btn.is-disabled{
  cursor:not-allowed;
  opacity:.55;
}
@media (hover:hover){
  .btn:not(:disabled):hover{
    transform:translateY(-1px);
  }
  .btn-secondary:hover,
  .btn-ghost:hover{
    border-color:var(--accent);
  }
}
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  border-bottom:1px solid var(--accent-10);
  background:var(--bg);
}
.header-inner{
  display:flex;
  align-items:center;
  min-height:var(--nav-h);
  gap:22px;
}
.site-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
  min-height:44px;
  font-family:var(--font-display);
  font-size:20px;
  font-weight:850;
  letter-spacing:-.01em;
}
.site-brand img{
  width:34px;
  height:34px;
}
.brand-local{
  color:var(--text-muted);
  font-size:14px;
  font-weight:650;
}
.desktop-nav{
  display:flex;
  align-items:center;
  gap:2px;
  margin-left:auto;
}
.desktop-nav a{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:7px;
  min-height:44px;
  padding:8px 11px;
  border-radius:var(--r-sm);
  color:var(--text-muted);
  font-size:14px;
  font-weight:650;
}
.desktop-nav a:hover,
.desktop-nav a.is-active{
  color:var(--text);
}
.desktop-nav a.is-active::after{
  content:"";
  position:absolute;
  right:11px;
  bottom:-1px;
  left:11px;
  height:3px;
  border-radius:var(--r-pill);
  background:var(--accent);
}
.nav-new{
  display:inline-flex;
  align-items:center;
  min-height:18px;
  padding:2px 6px;
  border-radius:var(--r-pill);
  background:var(--success-12);
  color:var(--success);
  font-size:10px;
  font-weight:800;
}
.nav-status-dot{
  width:6px;
  height:6px;
  flex-shrink:0;
  border-radius:50%;
  background:var(--accent-2);
  box-shadow:0 0 0 2px var(--accent2-24);
}
.header-tools{
  position:relative;
  display:flex;
  align-items:center;
  gap:8px;
  flex-shrink:0;
}
.lang-toggle,
.menu-toggle{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:44px;
  min-height:44px;
  padding:8px 10px;
  border:0;
  border-radius:var(--r-sm);
  background:transparent;
  color:var(--text-muted);
  cursor:pointer;
  font-size:14px;
  font-weight:700;
}
.lang-toggle svg,
.menu-toggle svg{
  width:18px;
  height:18px;
}
.lang-menu{
  position:absolute;
  top:calc(100% + 10px);
  right:0;
  z-index:96;
  display:none;
  width:176px;
  padding:8px;
  border:1px solid var(--border);
  border-radius:var(--r-md);
  background:var(--bg-panel);
  box-shadow:var(--shadow-panel);
}
.lang-menu.is-open{
  display:block;
}
.lang-menu a{
  display:flex;
  align-items:center;
  width:100%;
  min-height:42px;
  padding:8px 10px;
  border-radius:var(--r-xs);
  color:var(--text-muted);
  font-size:14px;
  font-weight:650;
}
.lang-menu a:hover,
.lang-menu a[aria-current="true"]{
  background:var(--bg-panel-2);
  color:var(--text);
}
.login-link{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:40px;
  padding:8px 18px;
  border:1px solid var(--border);
  border-radius:var(--r-pill);
  background:var(--bg-panel);
  color:var(--text);
  box-shadow:0 1px 0 var(--white) inset;
  font-size:14px;
  font-weight:750;
}
.login-link:hover{
  border-color:var(--accent);
}
.menu-toggle{
  display:none;
}
.mobile-drawer{
  position:fixed;
  top:var(--nav-h);
  right:0;
  left:0;
  z-index:94;
  display:none;
  max-height:calc(100dvh - var(--nav-h));
  padding:12px var(--gutter) 24px;
  overflow-y:auto;
  overscroll-behavior:contain;
  border-top:1px solid var(--border);
  background:var(--bg-panel);
}
.mobile-drawer.is-open{
  display:block;
}
.mobile-drawer ul{
  margin:0;
  padding:0;
  list-style:none;
}
.mobile-drawer a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  width:100%;
  min-height:48px;
  padding:11px 12px;
  border-bottom:1px solid var(--border);
  color:var(--text);
  font-weight:700;
}
.mobile-drawer a.is-active{
  color:var(--accent);
}
.mobile-languages{
  margin-top:14px;
}
.mobile-languages strong{
  display:block;
  padding:8px 12px;
  color:var(--text-muted);
  font-size:12px;
}
.nav-veil{
  position:fixed;
  inset:var(--nav-h) 0 0;
  z-index:70;
  display:none;
  border:0;
  background:var(--accent-20);
}
.nav-veil.is-open{
  display:block;
}
.site-footer{
  margin-top:var(--section-space);
  overflow-x:clip;
  border-top:1px solid var(--win-border);
  background:var(--win);
  color:var(--win-text);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.25fr 1fr 1.35fr;
  gap:56px;
  padding-top:64px;
  padding-bottom:48px;
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:16px;
  font-family:var(--font-display);
  font-size:21px;
  font-weight:850;
}
.footer-brand img{
  width:36px;
  height:36px;
}
.footer-intro{
  max-width:360px;
  color:var(--win-muted);
  font-size:14px;
}
.footer-title{
  margin-bottom:16px;
  color:var(--win-text);
  font-size:13px;
  font-weight:800;
  letter-spacing:.05em;
}
.footer-links{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:7px 18px;
}
.footer-links a,
.footer-language a{
  display:inline-flex;
  align-items:center;
  min-height:32px;
  color:var(--win-muted);
  font-size:14px;
}
.footer-links a:hover,
.footer-language a:hover{
  color:var(--win-text);
}
.footer-keywords{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.footer-keywords a{
  display:inline-flex;
  align-items:center;
  min-height:30px;
  max-width:100%;
  padding:4px 10px;
  overflow:hidden;
  border:1px solid var(--win-border);
  border-radius:var(--r-pill);
  background:var(--white-03);
  color:var(--win-muted);
  font-size:12px;
}
.footer-language{
  display:flex;
  flex-wrap:wrap;
  gap:8px 16px;
  margin-top:22px;
}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding-top:22px;
  padding-bottom:24px;
  border-top:1px solid var(--win-border);
  color:var(--win-muted);
  font-size:13px;
}
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  gap:18px;
}
.footer-legal a{
  min-height:24px;
}
.prose{
  min-width:0;
  color:var(--text);
}
.prose h2{
  margin-top:64px;
}
.prose h3{
  margin-top:38px;
}
.prose p,
.prose li{
  color:var(--text-muted);
}
.prose a:not(.btn){
  color:var(--accent);
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:3px;
}
.prose blockquote{
  margin:28px 0;
}
.prose img{
  margin:28px auto;
  border-radius:var(--r-md);
}
.prose ol.steps{
  padding:0;
  list-style:none;
  counter-reset:steps;
}
.prose ol.steps>li{
  position:relative;
  min-height:44px;
  padding-left:54px;
  counter-increment:steps;
}
.prose ol.steps>li::before{
  content:counter(steps);
  position:absolute;
  top:0;
  left:0;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:50%;
  background:var(--accent);
  color:var(--white);
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:800;
}
.reveal{
  transition:opacity .55s ease,transform .55s ease;
}
.reveal.pending{
  opacity:0;
  transform:translateY(16px);
}
.reveal.shown{
  opacity:1;
  transform:none;
}
.tilt,
.tilt-card{
  transform:rotate(.35deg);
}
#server-status{
  position:relative;
  display:block;
  width:100%;
  max-width:100%;
  margin-bottom:32px;
  overflow:hidden;
}
body:has(.toc-tabs) section[id]{
  scroll-margin-top:var(--toc-offset);
}
@media (max-width:1080px){
  .desktop-nav a{
    padding-inline:8px;
    font-size:13px;
  }
  .footer-grid{
    gap:32px;
  }
}
@media (max-width:920px){
  .desktop-nav,
  .header-tools>.lang-toggle,
  .header-tools>.lang-menu{
    display:none;
  }
  .header-tools{
    margin-left:auto;
  }
  .menu-toggle{
    display:inline-flex;
  }
  .footer-grid{
    grid-template-columns:1fr 1fr;
  }
  .footer-brand-col{
    grid-column:1 / -1;
  }
}
@media (max-width:768px){
  :root{
    --nav-h:60px;
    --section-space:72px;
    --toc-offset:118px;
  }
  h1{
    font-size:clamp(32px,9.8vw,40px);
    line-height:1.12;
    letter-spacing:-.018em;
  }
  h2{
    font-size:clamp(28px,7.5vw,36px);
  }
  .section-head{
    margin-bottom:36px;
  }
  .section-head p,
  .lead{
    font-size:16px;
  }
  .panel,
  .card{
    padding:22px;
  }
  .footer-grid{
    grid-template-columns:1fr;
    padding-top:48px;
  }
  .footer-brand-col{
    grid-column:auto;
  }
  .footer-bottom{
    align-items:flex-start;
    flex-direction:column;
  }
}
@media (max-width:640px){
  :root{
    --gutter:16px;
    --section-space:60px;
  }
  .no-break{
    white-space:normal;
  }
  .tilt,
  .tilt-card{
    transform:none;
  }
  .site-brand{
    font-size:18px;
  }
  .site-brand img{
    width:31px;
    height:31px;
  }
  .login-link{
    padding-inline:14px;
  }
  .mobile-drawer{
    max-width:100%;
  }
  .footer-links{
    grid-template-columns:1fr;
  }
}
@media (max-width:390px){
  .site-brand{
    gap:7px;
  }
  .header-inner{
    gap:8px;
  }
  .login-link{
    padding-inline:12px;
    font-size:13px;
  }
}
@media (prefers-reduced-motion:reduce){
  html{
    scroll-behavior:auto;
  }
  *,
  *::before,
  *::after{
    scroll-behavior:auto!important;
    transition-duration:0s!important;
    animation-duration:0s!important;
    animation-iteration-count:1!important;
  }
  .reveal,
  .reveal.pending{
    opacity:1;
    transform:none;
  }
}