:root {
  --bg:#FAF4E8;
  --bg-panel:#FFFDF8;
  --bg-panel-2:#F1E8D6;
  --border:#E3D8C3;
  --border-strong:#D5C6AB;
  --accent:#4234D6;
  --accent-2:#6A5EEE;
  --accent-dark:#2C2199;
  --text:#2A2117;
  --text-muted:#6E6252;
  --text-faint:#978A76;
  --ink:#211A13;
  --on-ink:#FBF6EC;
  --on-ink-muted:rgb(251 246 236 / .64);
  --on-ink-line:rgb(251 246 236 / .24);
  --paper-top:#FCF8EF;
  --paper-bottom:#F3EBDB;
  --success:#2F8A4E;
  --warn:#B8740F;
  --error:#C23B2E;
  --accent-6:rgb(66 52 214 / .06);
  --accent-10:rgb(66 52 214 / .10);
  --accent-14:rgb(66 52 214 / .14);
  --accent-28:rgb(66 52 214 / .28);
  --trace-line:rgb(42 33 23 / .085);
  --trace-fill:rgb(42 33 23 / .04);
  --trace-dark:rgb(251 246 236 / .05);
  --hl:rgb(255 255 255 / .92);
  --hl-on-accent:rgb(255 255 255 / .30);
  --hl-on-ink:rgb(255 255 255 / .12);
  --panel-veil:rgb(255 253 248 / .74);
  --shade-soft:rgb(42 33 23 / .06);
  --shade-mid:rgb(42 33 23 / .12);
  --mask-on:#000;
  --mask-dim:rgb(0 0 0 / .16);
  --flag-red:#C8352B;
  --flag-white:#FFFDF8;
  --flag-blue:#1F3A7A;
  --flag-green:#2E7D4B;
  --flag-edge:rgb(42 33 23 / .16);
  --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","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
  --r:8px;
  --r-sm:6px;
  --r-pill:999px;
  --gutter:24px;
  --lift-main:inset 0 1px 0 var(--hl),0 1px 2px var(--shade-soft),0 14px 28px -14px var(--accent-10),0 36px 88px -24px var(--accent-14);
  --lift-side:inset 0 1px 0 var(--hl),0 2px 6px var(--shade-soft),0 24px 56px -22px var(--accent-10);
  --lift-chip:inset 0 1px 0 var(--hl),0 8px 20px -10px var(--shade-mid);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:104px}
html.nav-open{overflow:hidden}
body{margin:0;background:var(--paper-top);color:var(--text);font:16px/1.6 var(--font-body);-webkit-font-smoothing:antialiased;overflow-x:clip}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
a,button,summary,[role="tab"]{touch-action:manipulation}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:var(--r-sm)}
ul,ol,dl,dd,figure{margin:0;padding:0}
img,svg{max-width:100%}
svg{flex-shrink:0}
h1,h2,h3{font-family:var(--font-display);line-height:1.2;text-wrap:balance}
h1{font-size:clamp(52px,5vw,68px);font-weight:900;letter-spacing:-.03em;line-height:1.1}
h2{font-size:clamp(30px,3vw,46px);font-weight:800;letter-spacing:-.02em}
h3{font-size:22px}
p{margin-block:0 16px}
code,pre{font-family:var(--font-mono)}
:not(pre)>code{overflow-wrap:anywhere}
pre{max-width:100%;overflow-x:auto;padding:16px;background:var(--bg-panel-2);border-radius:var(--r)}
.no-break{white-space:nowrap}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.wrap{max-width:1248px;margin-inline:auto;padding-inline:var(--gutter);min-width:0}
.sec{padding-top:88px;padding-bottom:88px}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head p{color:var(--text-muted)}
.kicker{font:11px var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.panel{min-width:0;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--lift-side)}
.reveal{transition:opacity .55s ease,transform .55s ease}
.reveal.pending{opacity:0;transform:translateY(16px)}
.reveal.shown{opacity:1;transform:none}
#server-status{position:relative;display:block;overflow:hidden;max-width:100%;margin-bottom:24px}
#server-status + *{margin-top:24px}
.notice-rail{display:flex;align-items:center;justify-content:center;gap:16px;min-height:40px;padding:4px 24px;background:var(--ink);color:var(--on-ink);font-size:14px;font-weight:500;letter-spacing:.01em;text-align:center}
.notice-rail__sep{width:1px;height:16px;background:var(--on-ink-line);flex:none}
.notice-rail__link{display:inline-flex;align-items:center;gap:6px;font-weight:600;min-height:24px}
.notice-rail__link span{color:var(--on-ink-muted);font-size:11px}
.masthead{padding:12px 24px 0;position:relative;z-index:30}
.masthead-bar{max-width:1200px;margin:0 auto;min-height:56px;display:flex;align-items:center;padding:0 8px 0 16px;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--r);box-shadow:inset 0 1px 0 var(--hl),0 8px 22px -14px var(--shade-mid)}
.brandmark{display:flex;align-items:center;gap:8px;font-family:var(--font-display);font-weight:800;font-size:18px;letter-spacing:-.02em;white-space:nowrap}
.brandmark img{width:24px;height:24px;flex:none}
.brandmark__local{font-weight:500;color:var(--text-muted)}
.masthead-divider{width:1px;height:24px;background:var(--border);margin:0 8px 0 16px;flex:none}
.tabnav{min-width:0}
.tabnav ul{display:flex;align-items:center;list-style:none;margin:0;padding:0}
.tabnav a{position:relative;display:flex;align-items:center;min-height:54px;padding:0 12px;font-size:14.5px;font-weight:500;color:var(--text-muted);white-space:nowrap;transition:color .15s ease}
.tabnav a:hover{color:var(--text)}
.tabnav a::after{content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;border-radius:2px 2px 0 0;background:transparent}
.tabnav a:hover::after{background:var(--border-strong)}
.tabnav a[aria-current="page"]{color:var(--text);font-weight:600}
.tabnav a[aria-current="page"]::after{background:linear-gradient(90deg,var(--accent),var(--accent-2))}
.masthead-tools{margin-left:auto;display:flex;align-items:center;gap:8px}
.lang-box{position:relative}
.lang-pick{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:36px;min-width:44px;width:auto;padding:0 10px;border:0;background:transparent;border-radius:var(--r-sm);font-size:14px;color:var(--text-muted);white-space:nowrap}
.lang-pick:hover{background:var(--bg-panel-2);color:var(--text)}
.lang-menu{position:absolute;right:0;top:calc(100% + 8px);min-width:154px;padding:6px;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--lift-side);z-index:35}
.lang-menu[hidden],.mobile-drawer[hidden],.nav-veil[hidden]{display:none}
.lang-menu a{display:flex;align-items:center;min-height:40px;padding:8px 10px;border-radius:var(--r-sm);white-space:nowrap}
.lang-menu a:hover,.mobile-drawer a:hover{background:var(--bg-panel-2)}
.lang-menu a[aria-current="true"]{color:var(--accent);font-weight:700}
.login-btn{display:inline-flex;align-items:center;justify-content:center;min-height:36px;padding:0 18px;border-radius:var(--r-sm);background:var(--text);color:var(--on-ink);font-size:14px;font-weight:600;white-space:nowrap;box-shadow:inset 0 1px 0 var(--hl-on-ink),0 4px 10px -6px var(--shade-mid)}
.login-btn:hover{background:var(--ink)}
.menu-toggle{display:none;align-items:center;justify-content:center;min-width:44px;min-height:44px;background:transparent;border:0;border-radius:var(--r-sm)}
.menu-toggle svg{width:22px;height:22px}
.mobile-drawer{display:none}
.nav-veil{position:fixed;inset:0;background:var(--shade-mid);z-index:20}
.site-footer{margin-top:72px;background:var(--ink);color:var(--on-ink);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.4fr;gap:48px}
.footer-brand p{max-width:310px;color:var(--on-ink-muted);margin-top:16px}
.site-footer .brandmark{color:var(--on-ink)}
.site-footer h2{font:600 14px var(--font-body);margin:0 0 16px}
.footer-links,.footer-terms,.footer-languages{display:flex;flex-wrap:wrap;gap:6px 18px;list-style:none;padding:0;margin:0}
.footer-links a,.footer-terms a,.footer-languages a{display:inline-flex;align-items:center;min-height:28px;color:var(--on-ink-muted);font-size:13px}
.footer-links a:hover,.footer-terms a:hover,.footer-languages a:hover{color:var(--on-ink)}
.footer-bottom{border-top:1px solid var(--on-ink-line);margin-top:48px;padding-top:22px;padding-bottom:30px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:var(--on-ink-muted)}
.btn-prime,.btn-quiet,.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 26px;border-radius:var(--r);font-size:16px;font-weight:600;white-space:nowrap;flex-shrink:0;transition:transform .18s ease}
.btn-prime{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:var(--bg-panel);box-shadow:inset 0 1px 0 var(--hl-on-accent),0 2px 4px var(--accent-14),0 14px 30px -10px var(--accent-28)}
.btn-quiet,.btn-secondary{background:var(--bg-panel);border:1px solid var(--border-strong);color:var(--text);box-shadow:inset 0 1px 0 var(--hl),0 2px 5px var(--shade-soft)}
.btn-prime:hover,.btn-quiet:hover,.btn-secondary:hover{transform:translateY(-1px)}
.btn-prime__arrow{font-size:12px}
.prose{min-width:0;max-width:780px}
.prose p,.prose li{line-height:1.85}
.prose a:not([class]){color:var(--accent);text-decoration:underline;text-underline-offset:3px}
@media(max-width:1180px){
  .masthead{padding-inline:16px}
  .masthead-bar{flex-wrap:wrap;padding:8px 8px 0 16px}
  .masthead-divider{display:none}
  .tabnav{order:3;width:100%;overflow-x:auto;border-top:1px solid var(--border);margin-top:8px}
  .tabnav a{min-height:46px}
}
@media(max-width:768px){
  h1{font-size:clamp(28px,7vw,40px);letter-spacing:-.02em}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:640px){
  :root{--gutter:16px}
  .no-break{white-space:normal}
  .notice-rail{gap:10px;padding-inline:12px;font-size:12.5px}
  .masthead{padding:10px 12px 0}
  .masthead-bar{flex-wrap:nowrap;padding:4px 6px 4px 12px}
  .tabnav{display:none}
  .masthead-tools{margin-left:auto;gap:2px}
  .lang-pick span{display:none}
  .menu-toggle{display:inline-flex}
  .mobile-drawer{position:absolute;top:calc(100% + 4px);left:12px;right:12px;z-index:31;display:block;max-height:calc(100dvh - 110px);overflow-y:auto;overscroll-behavior:contain;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--lift-main);padding:8px}
  .mobile-drawer ul{list-style:none;margin:0;padding:0}
  .mobile-drawer a{display:flex;align-items:center;width:100%;min-height:44px;padding:10px 14px;border-radius:var(--r-sm)}
  .mobile-drawer a[aria-current="page"]{color:var(--accent);font-weight:700;background:var(--accent-6)}
  .drawer-languages{border-top:1px solid var(--border);margin-top:8px;padding-top:8px}
  .drawer-languages a[aria-current="true"]{color:var(--accent)}
  .sec{padding-top:64px;padding-bottom:64px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-brand{grid-column:auto}
  .tilt{transform:none}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal,.reveal.pending{opacity:1;transform:none;transition:none}
  .btn-prime,.btn-quiet,.btn-secondary,.tabnav a{transition:none}
}