:root {
  color-scheme: light;
  --bg:#F6F7F4;
  --bg-deep:#ECEFE7;
  --bg-panel:#FFFFFF;
  --bg-panel2:#ECEEE8;
  --border:#DCDFD6;
  --border-strong:#C3C8BC;
  --accent:#EE5A12;
  --accent-2:#DC4C0B;
  --accent-dark:#B8420A;
  --text:#15171C;
  --text-muted:#5E6470;
  --ink-soft:rgba(21,23,28,.68);
  --success:#2F8A4C;
  --warn:#C98A06;
  --error:#D23A2E;
  --on-dark:#FFFFFF;
  --violet:#6A4FDC;
  --strip-mid:#A057C4;
  --strip-end:#E07A45;
  --apricot:#F2A66F;
  --moss:#8AB26C;
  --lime:#D4E46C;
  --orchid:#E4A3DD;
  --lavender:#B9ABF0;
  --blue-soft:#8FA6F6;
  --apricot-pale:#F8CFAE;
  --lavender-pale:#D9D0F7;
  --blue-pale:#C1CEFA;
  --apricot-deep:#E58C50;
  --lavender-deep:#9C8BE4;
  --blue-deep:#728DEE;
  --lime-strip:#DDE892;
  --moss-strip:#A2C08A;
  --apricot-strip:#F5BC92;
  --orchid-strip:#EAB9E4;
  --flag-red:#D33A3F;
  --flag-blue:#2C3E8C;
  --flag-white:#FFFFFF;
  --flag-nl-red:#C8382F;
  --flag-nl-blue:#244690;
  --hl:rgba(255,255,255,.6);
  --hl-strong:rgba(255,255,255,.92);
  --hl-soft:rgba(255,255,255,.28);
  --strip-btn-line:rgba(255,255,255,.4);
  --strip-btn-fill:rgba(255,255,255,.12);
  --wash-violet:rgba(106,79,220,.075);
  --wash-orange:rgba(238,90,18,.045);
  --dot:rgba(21,23,28,.075);
  --mask-solid:#000;
  --clear:transparent;
  --px-sep:rgba(143,166,246,.24);
  --sh-orange:rgba(238,90,18,.10);
  --sh-orange-strong:rgba(238,90,18,.30);
  --sh-ink:rgba(21,23,28,.22);
  --sh-lav:rgba(124,104,224,.16);
  --sh-apricot:rgba(229,140,80,.12);
  --sh-moss:rgba(98,140,74,.12);
  --sh-lime:rgba(160,180,40,.12);
  --sh-orchid:rgba(200,110,190,.12);
  --veil:rgba(21,23,28,.38);
  --window-bg:#191D26;
  --window-bar:#292F3B;
  --window-line:#414958;
  --window-text:#EDF0F7;
  --window-muted:#B9C2D3;
  --window-key:#C7B6FB;
  --window-value:#D4E46C;
  --font-display:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --font-mono-cjk:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,"Noto Sans SC","PingFang SC","Microsoft YaHei",monospace;
  --r-sm:6px;
  --r-md:8px;
  --r-lg:10px;
  --r-pill:999px;
  --gutter:24px;
  --wrap:1248px;
  --reading:800px;
  --header-height:104px;
  --anchor-offset:120px;
  --toc-offset:80px;
  --toc-landing:156px;
  --space-1:8px;
  --space-2:16px;
  --space-3:24px;
  --space-4:32px;
  --space-5:48px;
  --space-6:64px;
  --text-xs:12px;
  --text-sm:14px;
  --text-base:16px;
  --text-lg:20px;
  --h1:clamp(52px,4.2vw + 12px,72px);
  --h2:clamp(26px,3vw,36px);
  --h3:22px;
  --weight-normal:400;
  --weight-medium:500;
  --weight-semibold:600;
  --weight-bold:700;
  --shadow-panel:inset 0 1px 0 var(--hl-strong),0 20px 48px -24px var(--sh-orange);
  --ease:cubic-bezier(.2,.7,.2,1);
  --duration:.35s;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:var(--anchor-offset);scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:var(--text-base);line-height:1.6;-webkit-font-smoothing:antialiased}
html.nav-open{overflow:hidden}
img{max-width:100%;height:auto;display:block}
svg{flex-shrink:0}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
a{color:inherit;text-underline-offset:4px}
button,a,summary{touch-action:manipulation}
button{border:0}
[hidden]{display:none!important}
:where(a,button,input,select,textarea,summary,[tabindex]):focus-visible{outline:2px solid var(--violet);outline-offset:3px}
h1,h2,h3{font-family:var(--font-display);font-weight:var(--weight-bold);line-height:1.2;letter-spacing:-.02em;text-wrap:balance;overflow-wrap:break-word}
h1{font-size:var(--h1);line-height:1.12}
h2{font-size:var(--h2)}
h3{font-size:var(--h3)}
p{margin:0 0 var(--space-2)}
.no-break{white-space:nowrap}
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.reading-wrap{width:100%;max-width:var(--reading);margin-inline:auto;padding-inline:var(--gutter)}
.sec{padding-top:var(--space-6);padding-bottom:var(--space-6)}
.grid{display:grid;gap:var(--space-3);grid-template-columns:repeat(3,minmax(0,1fr))}
.grid>*,:where(article,section,main,aside,div){min-width:0}
.prose{overflow-wrap:break-word}
.prose h2{margin-top:var(--space-5)}
.prose h3{margin-top:var(--space-4)}
.prose p,.prose li{line-height:1.85}
.prose a{color:var(--accent-dark)}
code{font-family:var(--font-mono-cjk);overflow-wrap:anywhere}
pre{max-width:100%;overflow-x:auto;padding:var(--space-3);border-radius:var(--r-md);background:var(--window-bg);color:var(--window-text);font-family:var(--font-mono-cjk)}
pre code{overflow-wrap:normal;white-space:pre}
section[id]{scroll-margin-top:var(--anchor-offset)}
.muted{color:var(--text-muted)}
.kicker{font:var(--text-sm)/1.5 var(--font-mono-cjk);letter-spacing:.02em;margin:0 0 12px}
.panel,.card{padding:var(--space-3);border:1px solid var(--border);border-radius:var(--r-lg);background:var(--bg-panel);box-shadow:var(--shadow-panel)}
.decorated{position:relative;isolation:isolate;overflow-x:clip;max-width:100%}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:52px;padding:0 26px;border:1px solid var(--clear);border-radius:var(--r-md);font-size:var(--text-base);font-weight:var(--weight-semibold);text-decoration:none;white-space:nowrap;flex-shrink:0;transition:background .2s,border-color .2s,box-shadow .2s}
.btn svg{width:18px;height:18px;display:block}
.btn-primary{background:linear-gradient(180deg,var(--accent),var(--accent-2));color:var(--on-dark);box-shadow:inset 0 1px 0 var(--hl-soft),0 16px 30px -12px var(--sh-orange-strong)}
.btn-primary:hover{background:var(--accent-dark)}
.btn-primary:active{box-shadow:inset 0 2px 4px var(--sh-ink)}
.btn-ghost,.btn-secondary{background:var(--bg-panel);color:var(--text);border-color:var(--border-strong);box-shadow:inset 0 1px 0 var(--hl-strong)}
.btn-ghost:hover,.btn-secondary:hover{border-color:var(--text)}
.btn:disabled,.btn[aria-disabled="true"]{background:var(--bg-panel2);color:var(--text-muted);border-color:var(--border);box-shadow:none;cursor:not-allowed}
.btn-small{height:44px;padding-inline:18px;font-size:var(--text-sm)}
.cta-row{margin-top:28px;display:flex;justify-content:center;align-items:center;gap:12px;flex-wrap:wrap}
.statusbar{height:40px;background:linear-gradient(90deg,var(--violet),var(--strip-mid) 58%,var(--strip-end));color:var(--on-dark)}
.statusbar-inner{max-width:1360px;height:100%;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.status-arrow{width:28px;height:28px;flex:none;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--strip-btn-line);border-radius:var(--r-sm);background:var(--strip-btn-fill);padding:0}
.status-arrow svg{width:16px;height:16px;display:block}
.status-msg{margin:0;display:flex;align-items:center;justify-content:center;gap:14px;font-size:var(--text-sm);font-weight:var(--weight-medium);letter-spacing:.01em;white-space:nowrap}
.status-px{width:5px;height:5px;background:var(--on-dark);flex:none}
.topnav{background:var(--bg-panel);border-bottom:1px solid var(--border);position:relative;z-index:42}
.topnav-inner{max-width:1360px;height:64px;margin:0 auto;padding:0 24px;display:flex;align-items:center;gap:32px;flex-wrap:nowrap}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:none;min-height:44px}
.brand-mark{width:32px;height:32px;border-radius:var(--r-md);flex:none;box-shadow:inset 0 1px 0 var(--hl),0 6px 14px -6px var(--sh-orange-strong)}
.brand-word{font-family:var(--font-display);font-weight:var(--weight-bold);font-size:19px;letter-spacing:-.02em;color:var(--text);white-space:nowrap}
.mainnav{flex:1;min-width:0}
.mainnav ul{display:flex;align-items:center;list-style:none;margin:0;padding:0;gap:2px}
.mainnav a{display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 10px;border-radius:var(--r-sm);font-size:var(--text-sm);font-weight:var(--weight-medium);color:var(--text-muted);text-decoration:none;white-space:nowrap}
.mainnav a svg{width:16px;height:16px;flex:none;display:block}
.mainnav a:hover,.mainnav a[aria-current="page"]{color:var(--text);background:var(--bg-panel2)}
.nav-tools{display:flex;align-items:center;gap:10px;flex:none;margin-left:auto}
.lang-wrap{position:relative}
.lang{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:36px;min-width:44px;width:auto;padding:0 12px;border:1px solid var(--border);border-radius:var(--r-sm);background:var(--bg-panel);font-size:var(--text-sm);color:var(--text-muted)}
.lang-text{white-space:nowrap}
.lang svg{width:16px;height:16px;display:block}
.lang-panel{position:absolute;right:0;top:calc(100% + 10px);width:180px;z-index:60;padding:8px;border:1px solid var(--border);border-radius:var(--r-md);background:var(--bg-panel);box-shadow:var(--shadow-panel)}
.lang-panel a{display:flex;align-items:center;min-height:44px;padding:8px 12px;text-decoration:none;border-radius:var(--r-sm)}
.lang-panel a:hover,.lang-panel a[aria-current="true"]{background:var(--bg-panel2)}
.login{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:38px;padding:0 18px;border-radius:var(--r-md);background:var(--text);color:var(--on-dark);font-size:var(--text-sm);font-weight:var(--weight-semibold);text-decoration:none;box-shadow:inset 0 1px 0 var(--hl-soft);white-space:nowrap}
.login svg{width:16px;height:16px;display:block}
.login:hover{background:var(--accent-dark)}
.menu-toggle{display:none;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:10px;border:1px solid var(--border);border-radius:var(--r-sm);background:var(--bg-panel)}
.menu-toggle svg{width:22px;height:22px;display:block}
.menu-drawer{position:fixed;top:var(--header-height);left:0;right:0;z-index:41;height:calc(100dvh - var(--header-height));max-height:calc(100dvh - var(--header-height));overflow-y:auto;overscroll-behavior:contain;background:var(--bg-panel);padding:16px var(--gutter) 40px}
.menu-drawer ul{list-style:none;padding:0;margin:0}
.menu-drawer a{display:flex;align-items:center;gap:12px;width:100%;min-height:48px;padding:12px 16px;text-decoration:none;border-radius:var(--r-sm)}
.menu-drawer svg{width:18px;height:18px}
.menu-drawer a:hover,.menu-drawer a[aria-current]{background:var(--bg-panel2)}
.drawer-languages{border-top:1px solid var(--border);margin-top:16px;padding-top:16px}
.menu-veil{position:fixed;inset:var(--header-height) 0 0;z-index:40;background:var(--veil)}
.site-footer{background:var(--bg-panel2);border-top:1px solid var(--border);padding-top:48px;padding-bottom:24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
.footer-brand p{color:var(--text-muted);max-width:360px;margin-top:16px}
.footer-title{font-size:var(--text-sm);font-family:var(--font-mono-cjk);margin:0 0 12px}
.footer-links{display:flex;flex-wrap:wrap;gap:4px 20px;list-style:none;padding:0;margin:0}
.footer-links li{flex:1 0 40%}
.footer-links a,.footer-languages a,.footer-legal a{display:inline-flex;align-items:center;min-height:32px;font-size:var(--text-sm);text-decoration:none}
.footer-links a:hover,.footer-languages a:hover,.footer-legal a:hover{text-decoration:underline}
.footer-languages{display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:32px;padding-top:20px;border-top:1px solid var(--border)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-top:20px;font-size:var(--text-xs);color:var(--text-muted)}
.footer-bottom p{margin:0}
.footer-legal{display:flex;gap:20px;flex-wrap:wrap}
.reveal{transition:opacity var(--duration) var(--ease),transform var(--duration) var(--ease)}
.reveal.pending{opacity:0;transform:translateY(16px)}
.reveal.shown{opacity:1;transform:none}
#server-status{display:block;position:static;overflow:hidden;max-width:100%;margin:24px 0;min-height:1px}
#server-status+*{margin-top:var(--space-3)}
#server-status :where(.grid,[class*="grid"]){grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr))}
@media(max-width:1320px){
  .topnav-inner{gap:18px}
  .mainnav a{padding-inline:7px;gap:4px;font-size:13px}
}
@media(max-width:1200px){
  .topnav-inner{gap:16px}
  .mainnav ul{gap:4px}
  .mainnav a{padding-inline:5px}
  .lang{padding-inline:8px}
}
@media(max-width:1100px){
  .mainnav{display:none}
  .menu-toggle{display:inline-flex}
  .nav-tools{margin-left:auto}
  .topnav-inner{justify-content:space-between}
}
@media(min-width:1101px){
  .menu-drawer,.menu-veil{display:none!important}
}
@media(max-width:768px){
  :root{--h1:clamp(28px,6vw,40px);--space-6:48px}
  .grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1/-1}
  .topnav-inner{padding-inline:16px;gap:12px}
  .lang-text{display:none}
  .lang{padding:0 10px;height:38px}
  .nav-tools{gap:8px}
}
@media(max-width:640px){
  :root{--gutter:16px}
  .no-break{white-space:normal}
  .tilt,[data-tilt]{transform:none}
  .decorated{max-width:100%;overflow-x:clip}
  .statusbar-inner{padding-inline:12px;gap:8px}
  .status-msg{flex:1;min-width:0;flex-wrap:wrap;white-space:normal;font-size:var(--text-xs);line-height:1.4;gap:0 8px}
  .status-msg .status-px,.status-extra{display:none}
  .footer-grid{grid-template-columns:1fr}
  .footer-brand{grid-column:auto}
  .brand{gap:7px}
  .brand-word{font-size:17px}
  .brand-mark{width:28px;height:28px}
  .login{padding-inline:12px}
}
@media(max-width:360px){
  .topnav-inner{gap:8px}
  .nav-tools{gap:4px}
  .login{padding-inline:10px}
  .login svg{display:none}
  .brand-word{font-size:16px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal,.reveal.pending,.reveal.shown{opacity:1;transform:none;transition:none}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}