:root{
  color-scheme:light;
  --bg:#F8F0E3;
  --bg-panel:#FFFBF4;
  --bg-panel-2:#F1E5D2;
  --border:#E4D5BE;
  --border-soft:rgba(228,213,190,.72);
  --accent:#7A3CF0;
  --accent-dark:#5523C4;
  --text:#2B211A;
  --text-muted:#6E5E50;
  --success:#2F8F5B;
  --success-ring:rgba(47,143,91,.16);
  --warn:#C98A14;
  --error:#C8432E;
  --ink:#3A2A20;
  --white:#FFFFFF;
  --violet-100:#F2ECFE;
  --violet-150:#E4D9FC;
  --violet-200:#D0BEF9;
  --violet-300:#B49CF3;
  --violet-400:#9878EA;
  --mist:#F8F5FF;
  --sky-100:#E6F1FC;
  --sky-200:#C9E0F7;
  --sky-300:#9FC6EE;
  --sky-400:#6EA5DE;
  --sakura-100:#FDE9F0;
  --sakura-200:#F8CEDD;
  --sakura-300:#F1A9C3;
  --sakura-400:#E7839F;
  --butter-100:#FDF4D8;
  --butter-200:#F8E4A6;
  --butter-300:#EFCB6B;
  --teal-300:#93DDD3;
  --flag-red:#D7303D;
  --flag-blue:#24408E;
  --flag-white:#FFFFFF;
  --sky-wash:#D6E8FA;
  --lilac-wash:#EFE6F6;
  --mist-sky:rgba(183,214,247,.95);
  --mist-sky-2:rgba(200,225,250,.7);
  --mist-lilac:rgba(229,216,252,.75);
  --mist-sakura:rgba(246,198,217,.82);
  --cloud:rgba(255,255,255,.8);
  --cloud-soft:rgba(255,255,255,.55);
  --panel-glass:rgba(255,251,244,.74);
  --topbar-bg:rgba(255,251,244,.9);
  --shadow-violet:rgba(122,60,240,.12);
  --shadow-violet-soft:rgba(122,60,240,.07);
  --shadow-violet-strong:rgba(85,35,196,.16);
  --shadow-cta:rgba(122,60,240,.42);
  --hl-white:rgba(255,255,255,.9);
  --btn-hl:rgba(255,255,255,.28);
  --ghost-border:rgba(43,33,26,.22);
  --dot:rgba(85,35,196,.06);
  --veil:rgba(43,33,26,.24);
  --mask-solid:#000;
  --clear:transparent;
  --font-display:Georgia,'Times New Roman','Songti SC','STSong','Noto Serif CJK SC','Source Han Serif SC','SimSun',serif;
  --font-body:'Inter','Noto Sans SC','Noto Sans JP','Noto Sans KR','PingFang SC','Hiragino Sans','Microsoft YaHei',system-ui,sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;
  --r-sm:8px;
  --r-md:10px;
  --r-lg:12px;
  --r-pill:999px;
  --r-round:50%;
  --gutter:48px;
  --page-width:1392px;
  --header-height:72px;
  --toc-offset:88px;
  --section-gap:80px;
  --paper-shadow:inset 0 1px 0 var(--hl-white),0 26px 52px -12px var(--shadow-violet),0 4px 10px var(--shadow-violet-soft);
  --paper-noise:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='p'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Cpath filter='url(%23p)' opacity='.65' d='M0 0h180v180H0z'/%3E%3C/svg%3E");
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:var(--toc-offset);scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;z-index:100;pointer-events:none;background-image:var(--paper-noise);opacity:.04;mix-blend-mode:multiply}
[hidden]{display:none!important}
img{display:block;max-width:100%;height:auto}
svg{vertical-align:middle;flex-shrink:0}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
button,a{-webkit-tap-highlight-color:var(--clear)}
button{color:inherit}
a{color:inherit;text-underline-offset:4px}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:var(--r-sm)}
h1,h2,h3{font-family:var(--font-display);font-weight:700;line-height:1.2;text-wrap:balance;overflow-wrap:break-word}
h1{font-size:clamp(52px,4.6vw,66px);letter-spacing:-.02em}
h2{font-size:clamp(28px,3vw,40px);margin:0 0 24px}
h3{font-size:24px;margin:0 0 16px}
p{margin:0 0 20px}
ul,ol{padding-left:1.4em}
code{font-family:var(--font-mono);font-size:.88em;overflow-wrap:anywhere}
pre{max-width:100%;overflow-x:auto;padding:24px;background:var(--bg-panel-2);border-radius:var(--r-md)}
pre code{overflow-wrap:normal;white-space:pre}
table{border-collapse:collapse}
th,td{text-align:left}
.wrap{width:100%;max-width:var(--page-width);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-top:var(--section-gap);padding-bottom:var(--section-gap)}
.stage,.decor-section{position:relative;overflow-x:clip;max-width:100%}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid>*,.hero-grid>*,.footer-grid>*,.help-section>*{min-width:0}
.stack>*+*{margin-top:24px}
.muted{color:var(--text-muted)}
.mono{font-family:var(--font-mono);font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.no-break{white-space:nowrap}
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.panel,.card{background:var(--bg-panel);border:1px solid var(--border-soft);border-radius:var(--r-lg);padding:32px;box-shadow:inset 0 1px 0 var(--hl-white)}
.panel-inset{background:var(--bg-panel-2);border-radius:var(--r-md);padding:24px}
.card-float{box-shadow:var(--paper-shadow)}
.prose{max-width:78ch}
.prose p,.prose li{line-height:1.85}
.prose h2{margin-top:56px}
.prose h3{margin-top:32px}
.prose img{border-radius:var(--r-md)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:10px 22px;border:0;border-radius:var(--r-sm);font-family:var(--font-body);font-size:15.5px;font-weight:600;line-height:1.5;text-decoration:none;flex-shrink:0;white-space:nowrap;transition:transform .2s,background .2s,border-color .2s,box-shadow .2s}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--accent);color:var(--white);box-shadow:inset 0 1px 0 var(--btn-hl),0 12px 26px -10px var(--shadow-cta)}
.btn-primary:hover,.btn-primary.is-hover{background:var(--accent-dark);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost,.btn-secondary{background:var(--cloud-soft);color:var(--text);border:1.5px solid var(--ghost-border)}
.btn-ghost:hover,.btn-secondary:hover{background:var(--bg-panel);border-color:var(--text)}
.btn:disabled,.btn[aria-disabled="true"]{background:var(--bg-panel-2);color:var(--text-muted);box-shadow:none;cursor:not-allowed}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin:0 0 28px}
.badge{display:inline-flex;align-items:center;gap:10px;min-height:32px;max-width:100%;margin:0 0 28px;padding:4px 15px 4px 11px;border-radius:var(--r-pill);background:var(--cloud-soft);border:1px solid var(--hl-white);box-shadow:0 6px 18px -6px var(--shadow-violet);font-size:13px;color:var(--text-muted);overflow-wrap:anywhere}
.badge-dot{width:8px;height:8px;flex-shrink:0;border-radius:var(--r-round);background:var(--success);box-shadow:0 0 0 4px var(--success-ring)}
.tag{display:inline-block;max-width:100%;padding:4px 10px;background:var(--violet-100);color:var(--accent-dark);border-radius:var(--r-sm);font-size:12px;overflow-wrap:anywhere}
#site-header{position:relative;z-index:50}
.topbar{position:relative;z-index:53;background:var(--topbar-bg);border-bottom:1px solid var(--border-soft);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
.topbar-in{display:flex;align-items:center;gap:32px;min-height:var(--header-height);flex-wrap:nowrap}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);flex:none}
.brand img{width:34px;height:34px}
.brand-word{font-family:var(--font-display);font-weight:700;font-size:21px;letter-spacing:-.01em;white-space:nowrap}
.nav{flex:1;min-width:0}
.nav-list{display:flex;align-items:center;list-style:none;margin:0;padding:0;white-space:nowrap;gap:0}
.nav-list li{display:flex;align-items:center}
.nav-list>li+li::before{content:"·";color:var(--violet-300);font-weight:700;margin:0 7px}
.nav-list>li{flex-shrink:0}
.nav-more{position:relative;min-height:38px;z-index:61}
.nav-more-toggle{display:flex;align-items:center;gap:6px;min-height:38px;padding:6px 1px;border:0;background:var(--clear);font-size:14px;color:var(--text-muted);white-space:nowrap;cursor:pointer}
.nav-more-toggle::after{content:"⌄"}
.nav-more-panel{position:absolute;z-index:60;right:0;top:calc(100% + 12px);min-width:220px;max-width:calc(100vw - 32px);margin:0;padding:8px;list-style:none;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--r-md);box-shadow:var(--paper-shadow)}
.nav-more.is-open>.nav-more-panel{display:block;top:calc(100% + 12px);right:0}
.nav-list .nav-more-panel a{display:flex;width:100%;min-height:44px;padding:8px 12px}
.nav-more-panel li{display:block}
.nav-more-panel a{display:flex;width:100%;min-height:44px;padding:8px 12px;border-radius:var(--r-sm)}
.nav-more-panel a:hover{background:var(--violet-100);color:var(--accent-dark)}
.nav-list a{position:relative;display:inline-flex;align-items:center;min-height:32px;padding:6px 1px;font-size:14.5px;color:var(--text-muted);text-decoration:none;transition:color .2s}
.nav-list a:hover{color:var(--text)}
.nav-list a[aria-current="page"]{color:var(--text);font-weight:600}
.nav-list a[aria-current="page"]::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;border-radius:var(--r-sm);background:var(--violet-200)}
.topbar-act{display:flex;align-items:center;gap:10px;flex-shrink:0;margin-left:auto}
.language{position:relative}
.lang{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-width:44px;width:auto;min-height:38px;padding:6px 12px;border:0;border-radius:var(--r-sm);background:var(--clear);color:var(--text-muted);font-size:14px;white-space:nowrap}
.lang span{white-space:nowrap}
.lang:hover{background:var(--bg-panel-2)}
.lang-panel{position:absolute;z-index:60;right:0;top:calc(100% + 12px);width:180px;padding:8px;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--r-md);box-shadow:var(--paper-shadow)}
.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(--violet-100);color:var(--accent-dark)}
.btn-login{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:38px;padding:6px 18px;border-radius:var(--r-sm);border:1px solid var(--violet-200);background:var(--violet-100);color:var(--accent-dark);font-size:14px;font-weight:600;text-decoration:none;white-space:nowrap;box-shadow:inset 0 1px 0 var(--hl-white)}
.btn-login:hover{background:var(--violet-150);border-color:var(--violet-300)}
.menu-toggle{display:none;align-items:center;justify-content:center;flex-direction:column;gap:4px;min-width:44px;min-height:44px;padding:10px;border:1px solid var(--border);border-radius:var(--r-sm);background:var(--bg-panel);color:var(--ink)}
.menu-line{display:block;width:20px;height:2px;background:currentColor;border-radius:var(--r-sm)}
.nav-drawer{display:none;position:fixed;z-index:52;top:var(--header-height);right:0;left:0;height:calc(100dvh - var(--header-height));max-height:calc(100dvh - var(--header-height));overflow-y:auto;overscroll-behavior:contain;background:var(--bg-panel);padding:20px var(--gutter) 32px}
.drawer-list{list-style:none;margin:0;padding:0}
.nav-drawer a{display:flex;align-items:center;width:100%;min-height:44px;padding:12px 14px;text-decoration:none;border-bottom:1px solid var(--border-soft)}
.nav-drawer a[aria-current="page"],.nav-drawer a:hover{background:var(--violet-100);color:var(--accent-dark)}
.drawer-languages{display:grid;margin-top:24px;border-top:1px solid var(--border)}
.nav-veil{position:fixed;z-index:51;inset:var(--header-height) 0 0;border:0;background:var(--veil)}
html.nav-open{overflow:hidden}
.footer{background:var(--bg-panel-2);border-top:1px solid var(--border);padding-top:56px;padding-bottom:32px}
.footer-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:48px}
.footer-brand p{max-width:30em;margin-top:20px;color:var(--text-muted);font-size:14px}
.footer-title{font-family:var(--font-body);font-size:15px;margin:0 0 16px}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 20px;list-style:none;padding:0;margin:0}
.footer-links a{display:inline-flex;align-items:center;min-height:28px;font-size:14px;color:var(--text-muted)}
.footer-languages{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:32px}
.footer-languages a{display:inline-flex;align-items:center;min-height:28px;font-size:13px}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-top:24px;padding-top:24px;border-top:1px solid var(--border);font-size:13px;color:var(--text-muted)}
.footer-legal{display:flex;flex-wrap:wrap;gap:20px}
.footer-legal a{display:inline-flex;align-items:center;min-height:28px}
.reveal{transition:opacity .35s ease,transform .35s ease}
.reveal.pending{opacity:0;transform:translateY(16px)}
.reveal.shown{opacity:1;transform:none}
#server-status{display:block;position:relative;min-width:0;max-width:100%;overflow:hidden;margin-top:24px;margin-bottom:32px}
#server-status+*{margin-top:32px}
@media(max-width:1240px){
  .nav-list a{font-size:13.5px}
  .nav-list>li+li::before{margin:0 7px}
  .topbar-in{gap:22px}
}
@media(max-width:1180px){
  .topbar-in{gap:14px}
  .nav-list>li+li::before{margin:0 5px}
  .lang{padding-inline:8px}
}
@media(max-width:1100px){
  .nav{display:none}
  .topbar-act{margin-left:auto}
  .menu-toggle{display:flex}
  .nav-drawer:not([hidden]){display:block}
}
@media(max-width:768px){
  :root{--gutter:24px;--section-gap:48px}
  h1{font-size:clamp(28px,5vw,40px)}
  .grid,.footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{gap:28px}
  .panel,.card{padding:24px}
}
@media(max-width:640px){
  :root{--gutter:20px}
  .no-break{white-space:normal}
  .tilt,[data-tilt]{transform:none}
  .decor-section{max-width:100%;overflow-x:clip}
  .topbar-in{gap:8px}
  .brand{gap:6px}
  .brand img{width:28px;height:28px}
  .brand-word{font-size:18px}
  .topbar-act{gap:4px;margin-left:auto}
  .lang{font-size:12px;padding-inline:6px}
  .btn-login{font-size:13px;padding-inline:10px}
  .footer-bottom{display:block}
  .footer-legal{margin-top:12px}
  .prose h2{margin-top:40px}
}
@media(max-width:359px){
  :root{--gutter:16px}
  .brand-word{font-size:16px}
  .brand img{width:24px;height:24px}
  .lang{font-size:11px;padding-inline:4px}
  .btn-login{padding-inline:8px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal,.reveal.pending{opacity:1;transform:none}
}