:root{
  color-scheme:light;
  --bg:#F7F0E3;--panel:#FFFCF6;--panel-top:#FFFEFA;--panel-2:#EFE5D3;--line:#E2D5BF;
  --accent:#5AA9DA;--accent-dark:#1F5F8A;--ink:#2A211A;--ink-2:#4A3D31;--muted:#6E6152;
  --ok:#3F8F5A;--warn:#D99A1E;--err:#C2412F;--sun:#F2B935;
  --sky:#D6E9F5;--sky-mid:#E7EEEB;--sand:#E8D6B8;--sand-hi:#F2E5CD;--sand-deep:#DAC3A0;
  --ochre:#D9B48F;--ochre-deep:#C69F79;--shade:#A9CBE2;--shade-hi:#C2DAEB;--shade-deep:#91B7D2;
  --haze:#C9DEEC;--roof:#FFF8EC;--win-sky:#E3EFF7;--win-sand:#C9DCE8;--win-ochre:#F0DDC5;
  --tree:#A7B9A0;--tree-deep:#8FA48B;--tree-lite:#BCCBB4;--quay:#DFCCAB;
  --water:#C8DDEA;--water-deep:#AECADC;--water-shadow:#9BBBD0;--ripple:#E8F1F7;
  --hull:#7E6C59;--hull-deep:#665645;--cloud:#FFFCF6;--cloud-shade:#EADCC4;
  --flag-red:#C93A2E;--flag-blue:#26487F;--flag-white:#FFFFFF;--flag-edge:rgba(42,33,26,.16);
  --glass:rgba(247,240,227,.72);--glass-line:rgba(226,213,191,.85);
  --frost:rgba(255,252,246,.6);--frost-strong:rgba(255,252,246,.82);--frost-line:rgba(255,255,255,.78);
  --chip-bg:rgba(90,169,218,.16);--chip-bg-hover:rgba(90,169,218,.26);--chip-line:rgba(90,169,218,.28);
  --hl:rgba(242,185,53,.52);--glow:rgba(255,252,246,.9);--hi:rgba(255,255,255,.95);
  --fade-panel:rgba(239,229,211,0);--veil:rgba(42,33,26,.28);--clear:transparent;
  --sh-bar:0 10px 28px -14px rgba(31,95,138,.22);
  --sh-card:0 1px 2px rgba(42,33,26,.05),0 24px 56px -12px rgba(90,169,218,.14),0 10px 24px -14px rgba(31,95,138,.14);
  --sh-ask:inset 0 1px 0 rgba(255,255,255,.95),0 0 0 6px rgba(255,252,246,.62),0 0 0 7px rgba(226,213,191,.55),0 34px 76px -16px rgba(31,95,138,.2),0 14px 30px -12px rgba(90,169,218,.14);
  --sh-ask-focus:inset 0 1px 0 rgba(255,255,255,.95),0 0 0 6px rgba(90,169,218,.22),0 0 0 7px rgba(90,169,218,.4),0 34px 76px -16px rgba(31,95,138,.22),0 14px 30px -12px rgba(90,169,218,.16);
  --sh-btn:inset 0 1px 0 rgba(255,255,255,.16),0 8px 18px -8px rgba(42,33,26,.45);
  --sh-tag:inset 0 1px 0 rgba(255,255,255,.95),0 12px 26px -10px rgba(31,95,138,.26),0 2px 6px -2px rgba(42,33,26,.1);
  --sh-badge:0 1px 3px rgba(42,33,26,.12);
  --flag-shadow:drop-shadow(0 1px 1px rgba(42,33,26,.12));
  --font-display:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --text-xs:12px;--text-sm:14px;--text-base:16px;--text-lead:20px;
  --text-h1:clamp(52px,4.7vw,68px);--text-h2:clamp(28px,3vw,40px);--text-h3:22px;
  --weight-body:400;--weight-medium:500;--weight-bold:700;--weight-display:800;
  --r-s:10px;--r-m:12px;--r-l:14px;--r-pill:999px;--r-focus:6px;--r-round:50%;--r-dot:2px;
  --gutter:24px;--wrap:1200px;--reading:800px;--section-space:88px;
  --header-edge:80px;--anchor-offset:104px;--toc-top:16px;--toc-offset:100px;
  --ease-out:cubic-bezier(.2,.7,.3,1);--speed:.2s;--grain-opacity:.03;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:var(--anchor-offset)}
body{margin:0;background:var(--bg);color:var(--ink);font:var(--weight-body) var(--text-base)/1.6 var(--font-body);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
[hidden]{display:none!important}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
button:disabled{cursor:not-allowed}
img{display:block;max-width:100%;height:auto}
svg{vertical-align:middle;flex-shrink:0}
p{margin:0}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:var(--weight-bold);line-height:1.2;text-wrap:balance;overflow-wrap:break-word}
h1{font-size:var(--text-h1);font-weight:var(--weight-display);line-height:1.12;letter-spacing:-.02em}
h2{font-size:var(--text-h2);letter-spacing:-.02em}
h3{font-size:var(--text-h3)}
ul,ol{padding-left:1.5em}
code{font-family:var(--font-mono);font-size:.9em;overflow-wrap:anywhere}
pre{max-width:100%;overflow-x:auto;padding:20px;background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-s)}
pre code{overflow-wrap:normal;white-space:pre}
:focus-visible{outline:2px solid var(--accent-dark);outline-offset:3px;border-radius:var(--r-focus)}
::selection{background:var(--chip-bg-hover);color:var(--ink)}
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.reading-wrap{max-width:var(--reading);margin-inline:auto;padding-inline:var(--gutter)}
.sec{padding-top:var(--section-space);padding-bottom:var(--section-space)}
.grid{display:grid;gap:24px}
.grid>*{min-width:0}
.row{display:flex;align-items:center;flex-wrap:wrap;gap:12px}
.row>*{min-width:0}
.stack>*+*{margin-top:20px}
.muted{color:var(--muted)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.lead{font-size:var(--text-lead);color:var(--muted)}
.no-break{white-space:nowrap}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;margin:-1px}
.skip{position:absolute;left:16px;top:-80px;z-index:100;padding:10px 16px;border-radius:var(--r-s);background:var(--ink);color:var(--panel);font-weight:var(--weight-bold)}
.skip:focus{top:16px}
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.grain{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:60;opacity:var(--grain-opacity);mix-blend-mode:multiply}
.decor-section{position:relative;isolation:isolate;overflow-x:clip}
.card,.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--sh-card);padding:28px;min-width:0}
.panel--inset{background:var(--chip-bg);box-shadow:inset 0 1px 0 var(--hi)}
.section-head{margin-bottom:32px}
.section-head h2{margin:12px 0}
.prose{overflow-wrap:break-word;min-width:0}
.prose p,.prose ul,.prose ol,.prose pre,.prose table,.prose blockquote{margin-top:20px;margin-bottom:20px}
.prose h2{margin-top:56px;margin-bottom:24px}
.prose h3{margin-top:32px;margin-bottom:16px}
.prose a:not(.btn){color:var(--accent-dark);text-decoration:underline;text-underline-offset:4px}
.prose li+li{margin-top:8px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;border:1px solid var(--clear);border-radius:var(--r-pill);font-size:15px;font-weight:600;letter-spacing:-.005em;white-space:nowrap;flex-shrink:0;transition:transform var(--speed) var(--ease-out),box-shadow var(--speed) var(--ease-out),border-color var(--speed),background-color var(--speed)}
.btn--solid,.btn-primary{background:var(--ink);color:var(--panel);box-shadow:var(--sh-btn)}
.btn--solid:hover,.btn-primary:hover{transform:translateY(-1px)}
.btn--solid:active,.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn--ghost,.btn-secondary{background:var(--panel);color:var(--ink);border-color:var(--line)}
.btn--ghost:hover,.btn-secondary:hover{border-color:var(--accent);background:var(--panel-top)}
.btn--sm{min-height:40px;padding-inline:16px;font-size:14.5px}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.55;transform:none;box-shadow:none;pointer-events:none}
.arr{display:inline-block;transition:transform var(--speed)}
.btn:hover .arr{transform:translateX(3px)}
.btn svg{width:18px;height:18px}
.icon{width:20px;height:20px}
.ico-s{fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
#site-header{position:relative;z-index:50;min-height:var(--header-edge)}
.topbar{position:absolute;top:16px;left:0;right:0;z-index:50;padding-inline:24px}
.bar{position:relative;z-index:52;max-width:1200px;margin:0 auto;height:64px;display:flex;flex-wrap:nowrap;align-items:center;gap:16px;padding:0 12px 0 18px;background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--r-l);backdrop-filter:blur(14px) saturate(1.15);-webkit-backdrop-filter:blur(14px) saturate(1.15);box-shadow:var(--sh-bar)}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;font-family:var(--font-display);font-weight:800;font-size:19px;letter-spacing:-.015em;color:var(--ink);white-space:nowrap;min-height:40px}
.brand img{width:34px;height:34px}
.desktop-nav{display:flex;flex:1;min-width:0;justify-content:center}
.links{display:flex;align-items:center;list-style:none;margin:0;padding:0;gap:2px}
.links a,.more summary{display:inline-flex;align-items:center;gap:4px;min-height:38px;padding:0 13px;border-radius:var(--r-s);font-size:15px;font-weight:500;color:var(--ink-2);white-space:nowrap;transition:background-color var(--speed),color var(--speed)}
.links a:hover,.more summary:hover{background:var(--frost-strong);color:var(--ink)}
.links a[aria-current="page"],.more summary.is-current{background:var(--panel);color:var(--ink);box-shadow:var(--sh-badge)}
.more{position:relative}
.more summary{list-style:none;cursor:pointer}
.more summary::-webkit-details-marker{display:none}
.more summary svg{width:14px;height:14px;transition:transform var(--speed)}
.more[open] summary svg{transform:rotate(180deg)}
.more-menu{position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%);width:380px;display:grid;grid-template-columns:1fr 1fr;gap:6px 14px;padding:16px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--sh-card);z-index:54}
.more-group{min-width:0}
.more-group h3{margin:0 0 6px;padding:0 10px;font-family:var(--font-mono);font-size:12px;font-weight:500;letter-spacing:.04em;color:var(--muted)}
.more-group a{display:block;min-height:44px;height:auto;padding:8px 10px;border-radius:var(--r-s)}
.more-group a:hover{background:var(--panel-2)}
.more-group b{display:block;font-size:14.5px;font-weight:600;color:var(--ink)}
.more-group span{display:block;font-size:12.5px;line-height:1.45;color:var(--muted);font-weight:400;white-space:normal}
.bar-end{display:flex;align-items:center;gap:6px;flex-shrink:0;margin-left:auto}
.language{position:relative}
.lang{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;min-width:44px;width:auto;padding:0 10px;border-radius:var(--r-s);font-size:14px;color:var(--muted);white-space:nowrap}
.lang span{white-space:nowrap}
.lang:hover{background:var(--frost-strong);color:var(--ink)}
.lang svg{width:16px;height:16px}
.lang-panel{position:absolute;top:calc(100% + 12px);right:0;width:190px;padding:8px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-m);box-shadow:var(--sh-card);z-index:55}
.lang-panel a{display:flex;align-items:center;min-height:44px;padding:8px 12px;border-radius:var(--r-s)}
.lang-panel a:hover,.lang-panel a[aria-current="true"]{background:var(--panel-2);color:var(--accent-dark)}
.menu-toggle{display:none;align-items:center;justify-content:center;min-width:44px;min-height:44px;border-radius:var(--r-s);color:var(--ink)}
.menu-toggle:hover{background:var(--frost-strong)}
.menu-toggle svg{width:22px;height:22px}
.nav-drawer{position:fixed;top:var(--header-edge);right:12px;left:12px;height:calc(100dvh - var(--header-edge) - 12px);max-height:calc(100dvh - var(--header-edge) - 12px);padding:16px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--sh-card);overflow-y:auto;overscroll-behavior:contain;z-index:49}
.nav-drawer a{display:flex;align-items:center;width:100%;min-height:44px;padding:10px 14px;border-radius:var(--r-s);color:var(--ink-2)}
.nav-drawer a:hover,.nav-drawer a[aria-current]{background:var(--panel-2);color:var(--accent-dark)}
.drawer-label{display:block;padding:16px 14px 6px;color:var(--muted);font-size:var(--text-sm);border-top:1px solid var(--line);margin-top:12px}
.nav-veil{position:fixed;inset:var(--header-edge) 0 0;background:var(--veil);z-index:48}
html.nav-open{overflow:hidden}
.site-footer{border-top:1px solid var(--line);background:var(--panel-2);padding-top:56px;padding-bottom:24px}
.footer-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:40px}
.footer-grid>*{min-width:0}
.footer-brand p{margin-top:16px;max-width:32em;color:var(--muted)}
.footer-heading{font-size:var(--text-sm);font-weight:700;margin:0 0 12px}
.footer-links{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:4px 12px}
.footer-links a,.footer-langs a,.footer-bottom a{display:inline-flex;align-items:center;min-height:32px;font-size:var(--text-sm)}
.footer-links a:hover,.footer-langs a:hover,.footer-bottom a:hover{color:var(--accent-dark);text-decoration:underline;text-underline-offset:4px}
.footer-langs{display:flex;flex-wrap:wrap;gap:4px 20px;margin-top:32px;padding-top:20px;border-top:1px solid var(--line)}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:20px;font-size:var(--text-sm);color:var(--muted)}
.footer-legal{display:flex;gap:20px;flex-wrap:wrap}
.reveal{transition:opacity .35s var(--ease-out),transform .35s var(--ease-out)}
.reveal.pending{opacity:0;transform:translateY(16px)}
.reveal.shown{opacity:1;transform:none}
#server-status{position:relative;display:block;min-width:0;max-width:100%;overflow:hidden;margin-block:24px}
#server-status>*{min-width:0;max-width:100%}
#server-status+*{margin-top:32px}
#server-status .server-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:16px}
.f-sand{fill:var(--sand)}.f-sandd{fill:var(--sand-deep)}.f-och{fill:var(--ochre)}.f-ochd{fill:var(--ochre-deep)}
.f-shade{fill:var(--shade)}.f-shaded{fill:var(--shade-deep)}.f-haze{fill:var(--haze)}.f-roof{fill:var(--roof)}
.f-wsky{fill:var(--win-sky)}.f-wsand{fill:var(--win-sand)}.f-woch{fill:var(--win-ochre)}
.f-tree{fill:var(--tree)}.f-treed{fill:var(--tree-deep)}.f-treel{fill:var(--tree-lite)}
.f-quay{fill:var(--quay)}.f-hull{fill:var(--hull)}.f-hulld{fill:var(--hull-deep)}
.f-cloud{fill:var(--cloud)}.f-cloudsh{fill:var(--cloud-shade)}.f-ripple{fill:var(--ripple)}.f-wshadow{fill:var(--water-shadow)}
.f-panel{fill:var(--panel)}.f-adark{fill:var(--accent-dark)}
.st-sand-hi{stop-color:var(--sand-hi)}.st-sand{stop-color:var(--sand)}
.st-shade-hi{stop-color:var(--shade-hi)}.st-shade{stop-color:var(--shade)}
.fl-red{fill:var(--flag-red)}.fl-blue{fill:var(--flag-blue)}.fl-white{fill:var(--flag-white)}
.fl-ws{fill:none;stroke:var(--flag-white)}.fl-rs{fill:none;stroke:var(--flag-red)}
.fl-edge{fill:none;stroke:var(--flag-edge);stroke-width:1}
@media(max-width:1100px){
  .bar{gap:10px}.links a,.more summary{padding-inline:10px}
}
@media(max-width:1000px){
  .desktop-nav{display:none}.menu-toggle{display:inline-flex}.bar-end{margin-left:auto}
}
@media(max-width:768px){
  :root{--gutter:20px;--section-space:56px;--header-edge:70px;--anchor-offset:88px}
  h1{font-size:34px}
  .topbar{top:12px;padding-inline:12px}
  .bar{height:58px;padding:0 8px 0 14px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:1/-1}
  .card,.panel{padding:22px}
}
@media(max-width:640px){
  :root{--gutter:16px}
  .no-break{white-space:normal}
  .lang span{display:none}
  .bar{gap:6px;padding-left:10px}
  .brand{font-size:17px;gap:7px}
  .brand img{width:30px;height:30px}
  .bar-end{gap:2px;margin-left:auto}
  .bar-end .btn{font-size:13px;min-height:40px;padding-inline:12px}
  .tilt,[data-tilt]{transform:none!important}
  .decor-section,[data-hero-visual]{max-width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-brand{grid-column:auto}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal,.reveal.pending{opacity:1;transform:none}
}