:root{
  --bg:#F8F5F1;
  --bg-panel:#FFFFFF;
  --bg-panel-2:#F1ECE6;
  --border:#E6DED6;
  --accent:#CF3F67;
  --accent-dark:#A12A4D;
  --text:#1E1A18;
  --text-muted:#6E655F;
  --text-faint:#8A807A;
  --success:#2F8F5B;
  --warn:#C98A1A;
  --error:#C8372D;
  --white:#FFFFFF;
  --peach:#F6E3D8;
  --peach-soft:#F7ECE5;
  --peach-deep:#F2D6C6;
  --accent-soft:rgba(207,63,103,.07);
  --accent-ring:rgba(207,63,103,.24);
  --accent-line:rgba(207,63,103,.06);
  --veil:rgba(255,255,255,.62);
  --veil-strong:rgba(255,255,255,.86);
  --ink-line:rgba(30,26,24,.18);
  --capsule:rgba(42,37,34,.88);
  --on-dark:#FFFFFF;
  --on-dark-muted:rgba(255,255,255,.68);
  --glass-edge:rgba(255,255,255,.42);
  --mesh-blue:#8EB8EA;
  --mesh-sky:#B5DBF1;
  --mesh-pink:#F2B3C7;
  --mesh-peach:#F8CBAA;
  --mesh-yellow:#F6DC8C;
  --dot-red:#EC6B60;
  --dot-yellow:#F3BE52;
  --dot-green:#63C25A;
  --flag-red:#D52B3E;
  --flag-white:#FFFFFF;
  --flag-blue:#2E3F8F;
  --flag-navy:#16296B;
  --clear:transparent;
  --shadow-rose:0 24px 60px rgba(207,63,103,.10);
  --shadow-rose-sm:0 16px 40px rgba(207,63,103,.10);
  --shadow-ink:0 10px 24px rgba(30,26,24,.18);
  --shadow-capsule:0 14px 30px rgba(42,37,34,.26);
  --shadow-soft:0 6px 18px rgba(30,26,24,.05);
  --capsule-edge:inset 0 1px 0 rgba(255,255,255,.10);
  --edge-hair:0 0 0 1px rgba(214,202,191,.55);
  --edge-light:inset 0 0 0 1px rgba(255,255,255,.95);
  --edge-top:inset 0 1px 0 rgba(255,255,255,.9);
  --flag-ring:0 0 0 1px rgba(30,26,24,.10);
  --r-window:28px;
  --r-panel:24px;
  --r-card:18px;
  --r-row:12px;
  --r-capsule:14px;
  --r-small:6px;
  --r-mark:9px;
  --r-flag:3px;
  --r-round:50%;
  --r-pill:999px;
  --font-display:"Iowan Old Style","Charter","Palatino Linotype",Georgia,"Songti SC","STSong","Noto Serif CJK SC","SimSun",serif;
  --font-body:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans","Yu Gothic","Apple SD Gothic Neo","Malgun Gothic","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  --gutter:32px;
  --page-width:1264px;
  --reading-width:820px;
  --head-height:72px;
  --anchor-offset:88px;
  --toc-offset:80px;
  --section-offset:152px;
  --space-section:80px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --duration:.2s;
}
*,*::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:15px;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
a{color:inherit;text-underline-offset:.2em}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
button:disabled{cursor:not-allowed}
img{max-width:100%;height:auto;display:block}
svg{flex-shrink:0}
[hidden]{display:none!important}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:var(--r-small)}
h1,h2,h3,h4,p,ul,ol,blockquote{margin-top:0}
h1,h2,h3{display:block;overflow-wrap:break-word;text-wrap:balance}
h1{font-family:var(--font-display);font-size:clamp(52px,5vw,72px);font-weight:400;line-height:1.12;letter-spacing:-.02em}
h2{font-family:var(--font-display);font-size:40px;font-weight:400;line-height:1.2;letter-spacing:-.02em}
h3{font-size:22px;line-height:1.4;font-weight:600}
p{margin-bottom:1.2em}
code{font-family:var(--font-mono);font-size:.9em;overflow-wrap:anywhere;word-break:break-word}
pre{max-width:100%;overflow-x:auto;padding:20px;border:1px solid var(--border);border-radius:var(--r-card);background:var(--bg-panel-2)}
pre code{overflow-wrap:normal;word-break:normal;white-space:pre}
table{border-collapse:collapse}
th,td{word-break:keep-all}
summary{cursor:pointer}
.no-break{white-space:nowrap}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.skip{position:absolute;left:16px;top:-64px;z-index:100;padding:8px 16px;border-radius:var(--r-pill);background:var(--text);color:var(--white);text-decoration:none;font-size:14px}
.skip:focus{top:12px}
.shell,.wrap{width:100%;max-width:var(--page-width);margin-inline:auto;padding-inline:var(--gutter)}
.reading-wrap{width:100%;max-width:var(--reading-width);margin-inline:auto;padding-inline:var(--gutter)}
.sec{padding-top:var(--space-section);padding-bottom:var(--space-section)}
.page{position:relative;overflow-x:clip;max-width:100%}
main{position:relative;z-index:1}
.grid{display:grid;gap:24px}
.grid>*{min-width:0}
.grid-three{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-five{grid-template-columns:repeat(5,minmax(0,1fr))}
.panel,.card{min-width:0;background:var(--bg-panel);border-radius:var(--r-panel);box-shadow:var(--edge-light),var(--shadow-rose-sm)}
.panel{padding:32px}
.card{padding:24px}
.section-head{text-align:center;margin-bottom:40px}
.section-head h2{margin-bottom:12px}
.section-head p{max-width:680px;margin-inline:auto;color:var(--text-muted)}
.mono{font-family:var(--font-mono)}
.muted{color:var(--text-muted)}
.prose{min-width:0;overflow-wrap:anywhere;line-height:1.85}
.prose h2{margin-top:2em;margin-bottom:.7em;font-size:32px}
.prose h3{margin-top:1.6em}
.prose li+li{margin-top:8px}
.prose a{color:var(--text);text-decoration-thickness:1px}
.prose :not(pre)>code{background:var(--bg-panel-2);padding:2px 5px;border-radius:var(--r-small)}
.prose ol{padding-left:1.6em}
.prose blockquote{margin-inline:0;padding:20px 24px;border-left:3px solid var(--accent);background:var(--accent-soft);border-radius:var(--r-row)}
.decor-zone{position:relative;overflow-x:clip;max-width:100%}
#server-status{position:relative;display:block;min-width:0;max-width:100%;overflow:hidden;margin-block:32px}
#server-status+*{margin-top:32px}
#server-status>*{min-width:0;max-width:100%}
.reveal{transition:opacity .55s var(--ease),transform .55s var(--ease)}
.reveal.pending{opacity:0;transform:translateY(16px)}
.reveal.shown{opacity:1;transform:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:52px;min-height:44px;max-width:100%;border-radius:var(--r-pill);font-size:16px;font-weight:500;text-decoration:none;white-space:nowrap;flex-shrink:0;transition:transform var(--duration) var(--ease),background-color var(--duration) var(--ease),box-shadow var(--duration) var(--ease)}
.btn svg{width:20px;height:20px;flex:none}
.btn-primary{padding:0 28px 0 22px;background:var(--text);color:var(--white);box-shadow:var(--shadow-ink),var(--capsule-edge)}
.prose .btn-primary{color:var(--white)}
.btn-primary:hover{transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--shadow-soft)}
.btn-ghost,.btn-secondary{padding:0 26px;background:var(--veil);color:var(--text);box-shadow:inset 0 0 0 1px var(--ink-line)}
.btn-ghost:hover,.btn-secondary:hover{background:var(--white)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;transform:none;box-shadow:none;pointer-events:none}
.btn-small{height:44px;font-size:14px;padding-inline:20px}
.cta-row{margin-top:28px;display:flex;justify-content:center;flex-wrap:wrap;gap:12px}
.site-head,#site-header{position:relative;z-index:50;min-height:var(--head-height)}
.head-row{height:var(--head-height);display:flex;align-items:center;gap:24px;position:relative}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);flex:none;min-height:32px}
.brand-mark{width:32px;height:32px;flex:none;border-radius:var(--r-mark);box-shadow:var(--shadow-rose-sm)}
.brand-word{font-family:var(--font-display);font-size:23px;letter-spacing:-.01em;line-height:1}
.main-nav{margin:0 auto}
.main-nav ul{display:flex;align-items:center;list-style:none;margin:0;padding:0;gap:2px}
.main-nav a{display:inline-flex;align-items:center;gap:6px;padding:8px 11px;border-radius:var(--r-pill);font-size:14px;color:var(--text-muted);text-decoration:none;min-height:36px;transition:color var(--duration) var(--ease),background-color var(--duration) var(--ease)}
.main-nav a svg{width:16px;height:16px;flex:none}
.main-nav a:hover{color:var(--text);background:var(--veil)}
.main-nav a[aria-current="page"]{color:var(--text);background:var(--veil-strong);box-shadow:var(--edge-hair)}
.head-tools{display:flex;align-items:center;gap:14px;flex:none}
.lang-wrap{position:relative}
.lang{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-width:44px;min-height:44px;width:auto;font-size:14px;color:var(--text-muted);padding:6px 4px}
.lang span{white-space:nowrap}
.lang svg{width:15px;height:15px;flex:none}
.lang:hover{color:var(--text)}
.divider{width:1px;height:18px;background:var(--border)}
.login{display:inline-flex;align-items:center;justify-content:center;height:40px;min-height:40px;padding:0 20px;border-radius:var(--r-pill);border:1px solid var(--text);background:var(--veil);color:var(--text);font-size:14.5px;font-weight:500;text-decoration:none;white-space:nowrap;transition:background-color var(--duration) var(--ease)}
.login:hover{background:var(--white)}
.lang-menu{position:absolute;right:0;top:calc(100% + 8px);width:190px;max-width:calc(100vw - 32px);padding:8px;list-style:none;margin:0;border-radius:var(--r-card);background:var(--bg-panel);box-shadow:var(--edge-hair),var(--shadow-rose-sm);z-index:55}
.lang-menu a{display:flex;align-items:center;min-height:44px;padding:8px 12px;border-radius:var(--r-row);text-decoration:none}
.lang-menu a:hover,.lang-menu a[aria-current="true"]{background:var(--bg-panel-2)}
.menu-toggle{display:none;align-items:center;justify-content:center;min-width:44px;min-height:44px;border-radius:var(--r-round)}
.menu-toggle svg{width:22px;height:22px}
.mobile-drawer{display:none}
html.nav-open{overflow:hidden}
.site-footer{position:relative;z-index:1;border-top:1px solid var(--border);background:linear-gradient(180deg,var(--bg),var(--peach-soft));padding-top:56px;padding-bottom:32px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-grid>*{min-width:0}
.footer-brand p{margin-top:20px;max-width:320px;color:var(--text-muted);font-size:14px}
.footer-title{font-size:14px;font-weight:600;margin-bottom:16px}
.footer-links{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.footer-links a{display:inline-flex;align-items:center;min-height:28px;padding-block:2px;font-size:14px;color:var(--text-muted);text-decoration:none;overflow-wrap:anywhere}
.footer-links a:hover{color:var(--text)}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;font-size:13px;color:var(--text-muted)}
.footer-bottom p{margin:0}
.legal-links{display:flex;flex-wrap:wrap;gap:12px 20px}
.legal-links a{display:inline-flex;align-items:center;min-height:28px;text-decoration:none}
@media(max-width:1100px){
  .main-nav a{padding:8px 9px}
  .main-nav .nav-text{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
  .footer-grid{gap:24px}
}
@media(max-width:900px){
  .grid-five{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media(max-width:768px){
  h1{font-size:clamp(28px,6vw,40px)}
  h2{font-size:30px}
  .main-nav,.divider{display:none}
  .head-row{gap:8px;justify-content:space-between}
  .head-tools{margin-left:auto;gap:6px}
  .menu-toggle{display:inline-flex}
  .lang-label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
  .mobile-drawer{position:absolute;left:0;right:0;top:var(--head-height);background:var(--bg-panel);padding:16px var(--gutter) 24px;box-shadow:var(--shadow-rose);max-height:calc(100dvh - var(--head-height));overflow-y:auto;overscroll-behavior:contain;z-index:54}
  .mobile-drawer.is-open{display:block}
  .mobile-drawer ul{list-style:none;padding:0;margin:0}
  .mobile-drawer a{display:flex;width:100%;align-items:center;gap:12px;min-height:44px;padding:12px 16px;text-decoration:none;border-radius:var(--r-row)}
  .mobile-drawer a svg{width:18px;height:18px}
  .mobile-drawer a:hover,.mobile-drawer a[aria-current]{background:var(--bg-panel-2)}
  .drawer-languages{border-top:1px solid var(--border);margin-top:16px!important;padding-top:12px!important}
  .grid-three{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:640px){
  :root{--gutter:20px;--space-section:56px}
  .no-break{white-space:normal}
  .tilt,.float-devices{transform:none}
  .decor-zone,.page{max-width:100%}
  .panel{padding:24px}
  .grid-five{grid-template-columns:repeat(2,minmax(0,1fr))}
  .brand-word{font-size:21px}
  .login{padding-inline:14px}
  .head-tools{gap:2px}
  .footer-grid{gap:28px 20px}
  .prose h2{font-size:28px}
}
@media(max-width:360px){
  :root{--gutter:16px}
  .brand{gap:7px}
  .brand-word{font-size:20px}
  .login{padding-inline:12px}
  .grid-five{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
  .reveal,.reveal.pending{opacity:1;transform:none}
}