:root{
  --bg:#FAF7F9;
  --bg-panel:#FFFFFF;
  --bg-panel-2:#F2ECF1;
  --bg-soft:#FBF8FB;
  --border:#E6DDE5;
  --divider:#F2ECF1;
  --accent:#561A6E;
  --accent-dark:#3A0E4C;
  --accent-mid:#6E2C8A;
  --lilac:#B48BD6;
  --lilac-soft:#EEE2F7;
  --lilac-faint:#F7F1FB;
  --text:#1D1420;
  --text-muted:#6B5F6E;
  --text-faint:#9A8F9D;
  --success:#1F9D6B;
  --success-hi:#3FC28C;
  --success-ring:rgba(31,157,107,.18);
  --warn:#E8A317;
  --error:#D9364F;
  --mono-deep:#76657F;
  --mono-mid:#B7A9BE;
  --mono-ink:#86778D;
  --veil:rgba(86,26,110,.055);
  --blob-rose:rgba(239,150,186,.40);
  --blob-cream:rgba(250,222,140,.46);
  --blob-lilac:rgba(180,139,214,.34);
  --hill-top:#F3EBF8;
  --hill-bottom:#EADFF2;
  --plate:rgba(180,139,214,.34);
  --tint-14:rgba(86,26,110,.14);
  --tint-12:rgba(86,26,110,.12);
  --tint-08:rgba(86,26,110,.08);
  --tint-05:rgba(86,26,110,.05);
  --hi-white:rgba(255,255,255,.9);
  --hi-dark:rgba(255,255,255,.2);
  --hi-dark-2:rgba(255,255,255,.12);
  --on-accent:#FFFFFF;
  --on-accent-2:rgba(255,255,255,.74);
  --on-accent-3:rgba(255,255,255,.14);
  --search-fill:rgba(180,139,214,.26);
  --knob-shadow:rgba(29,20,32,.22);
  --flag-red:#D22F3F;
  --flag-blue:#22357F;
  --flag-white:#FFFFFF;
  --bezel:#1D1420;
  --clear:transparent;
  --radius-xs:6px;
  --radius-sm:10px;
  --radius-md:14px;
  --radius-lg:18px;
  --radius-xl:22px;
  --radius-2xl:26px;
  --radius-pill:999px;
  --radius-round:50%;
  --font-display:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --gutter:24px;
  --wrap-width:1248px;
  --header-height:60px;
  --toc-offset:16px;
  --chapter-offset:96px;
  --shadow-card:0 18px 48px -24px var(--tint-12),inset 0 1px 0 var(--hi-white);
  --shadow-lift:0 26px 64px -26px var(--tint-14),inset 0 1px 0 var(--hi-white);
  --ease-out:cubic-bezier(.2,.7,.2,1);
  --fast:.15s;
  --reveal-time:.35s;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:76px;scroll-behavior:smooth}
body{margin:0;font-family:var(--font-body);color:var(--text);background:linear-gradient(180deg,var(--veil) 0,var(--clear) 560px) var(--bg);-webkit-font-smoothing:antialiased;line-height:1.5}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
button:disabled{cursor:not-allowed}
img{display:block;max-width:100%;height:auto}
svg{flex-shrink:0}
ul{list-style:none;margin:0;padding:0}
p{margin:0}
h1,h2,h3,h4{font-family:var(--font-display);text-wrap:balance;overflow-wrap:break-word}
h1{margin:14px 0 0;font-size:clamp(52px,4.8vw,64px);line-height:1.05;font-weight:900;letter-spacing:-.03em}
h2{margin:0 0 20px;font-size:clamp(28px,3vw,40px);line-height:1.2;letter-spacing:-.02em;font-weight:800}
h3{margin:0 0 12px;font-size:22px;line-height:1.35;font-weight:750}
:lang(zh-CN) h2,:lang(zh-TW) h2,:lang(ja) h2,:lang(ko) h2{letter-spacing:-.02em}
a,button,summary,[role="tab"]{-webkit-tap-highlight-color:var(--tint-08)}
:focus-visible{outline:2px solid var(--lilac);outline-offset:3px;border-radius:var(--radius-xs)}
[hidden]{display:none!important}
.wrap{width:100%;max-width:var(--wrap-width);padding-inline:var(--gutter);margin-inline:auto}
.sec{padding-top:80px;padding-bottom:80px}
.stack{display:grid;gap:24px}
.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-5{grid-template-columns:repeat(5,minmax(0,1fr))}
.grid>*{min-width:0}
.no-break{white-space:nowrap}
.muted{color:var(--text-muted)}
.mono-text{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.center{text-align:center}
.section-intro{max-width:760px;margin:0 auto 32px;text-align:center}
.section-intro p{color:var(--text-muted);font-size:18px;line-height:1.7}
.card,.panel{min-width:0;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-card);padding:28px}
.panel-soft{background:var(--bg-panel-2)}
.icon{width:24px;height:24px;display:inline-block;vertical-align:middle;flex-shrink:0}
.icon-line{fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:10px 30px;border:0;border-radius:var(--radius-md);font-size:16px;font-weight:700;letter-spacing:.01em;flex-shrink:0;white-space:nowrap;transition:transform var(--fast),background var(--fast),box-shadow var(--fast)}
.btn-solid,.btn-primary{background:var(--accent);color:var(--on-accent);box-shadow:0 14px 28px -12px var(--tint-14),inset 0 1px 0 var(--hi-dark)}
.btn-solid:hover,.btn-primary:hover,.btn-hover{background:var(--accent-dark);transform:translateY(-1px)}
.btn-line,.btn-secondary{background:var(--bg-panel);color:var(--accent);box-shadow:inset 0 0 0 1.5px var(--accent)}
.btn-line:hover,.btn-secondary:hover{background:var(--lilac-faint);transform:translateY(-1px)}
.btn:active,.btn-active{transform:translateY(1px)}
.btn:disabled{opacity:.55;transform:none}
.btn-focus{outline:2px solid var(--lilac);outline-offset:3px}
.btn-small{min-height:40px;padding:8px 18px;font-size:14px}
.cta-pair{display:flex;gap:14px;justify-content:center;margin-top:20px;flex-wrap:wrap}
.badge,.tag{display:inline-flex;align-items:center;gap:6px;min-height:24px;padding:3px 10px;border-radius:var(--radius-pill);background:var(--lilac-soft);color:var(--accent);font-size:12px;font-weight:700;max-width:100%;overflow:hidden;overflow-wrap:anywhere}
.badge-new{background:var(--bg-panel);color:var(--accent)}
.dot-ok{width:8px;height:8px;border-radius:var(--radius-round);flex-shrink:0;background:var(--success);box-shadow:0 0 0 3px var(--success-ring)}
.prose{max-width:840px;margin-inline:auto;line-height:1.85;overflow-wrap:break-word}
.prose p,.prose ul,.prose ol,.prose pre,.prose table,.prose blockquote{margin-block:18px}
.prose h2{margin-top:48px}
.prose h3{margin-top:32px}
.prose ul{list-style:disc;padding-left:24px}
.prose ol{padding-left:24px}
.prose a:not(.btn){color:var(--accent);text-decoration:underline;text-underline-offset:3px}
code{font-family:var(--font-mono);font-size:.9em;overflow-wrap:anywhere;background:var(--bg-panel-2);border-radius:var(--radius-xs);padding:2px 5px}
pre{max-width:100%;overflow-x:auto;padding:20px;border-radius:var(--radius-md);background:var(--bg-panel-2)}
pre code{padding:0;white-space:pre;overflow-wrap:normal}
.table-scroll{overflow-x:auto;max-width:100%;-webkit-overflow-scrolling:touch;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-panel)}
.data-table{width:100%;border-collapse:collapse;min-width:680px;font-size:14px;text-align:left}
.data-table th,.data-table td{padding:16px 20px;border-bottom:1px solid var(--divider);word-break:keep-all}
.data-table th{background:var(--bg-panel-2);font-weight:700;color:var(--text);white-space:nowrap}
.data-table td:first-child{color:var(--text);font-weight:600}
.data-table tr:last-child td{border-bottom:0}
.prose>.data-table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;max-width:100%;min-width:0}
#server-status{position:relative;display:block;min-width:0;max-width:100%;overflow:hidden;margin-top:24px;margin-bottom:32px}
#server-status>*{min-width:0;max-width:100%}
#server-status+*{margin-top:32px}
.reveal{transition:opacity var(--reveal-time) var(--ease-out),transform var(--reveal-time) var(--ease-out)}
.reveal.pending{opacity:0;transform:translateY(16px)}
.reveal.shown{opacity:1;transform:none}
.decor-region{position:relative;overflow-x:clip}
.tilt{transform:rotate(-.45deg)}
.topbar{position:relative;z-index:100}
.topbar-in{height:var(--header-height);display:flex;align-items:center;gap:28px;flex-wrap:nowrap;position:relative;z-index:103}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;min-height:36px}
.brand img{width:30px;height:30px}
.brand-word{font-family:var(--font-display);font-weight:800;font-size:19px;letter-spacing:-.02em;color:var(--text)}
.dotnav{flex:1;display:flex;justify-content:center;min-width:0}
.dotnav ul{display:flex;align-items:center;list-style:none;margin:0;padding:0;flex-wrap:nowrap}
.dotnav li{display:flex;align-items:center;white-space:nowrap}
.dotnav li+li::before{content:"·";margin:0 11px;color:var(--text-faint);font-weight:700}
.dotnav a{display:inline-flex;align-items:center;min-height:32px;font-size:14px;color:var(--text-muted);padding:6px 0;transition:color var(--fast)}
.dotnav a:hover,.dotnav a[aria-current="page"]{color:var(--accent)}
.dotnav a[aria-current="page"]{font-weight:600}
.topbar-act{display:flex;align-items:center;gap:16px;flex-shrink:0}
.lang-picker{position:relative}
.lang{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:none;border:0;padding:6px 2px;min-height:36px;width:auto;white-space:nowrap;font-size:13.5px;color:var(--text-muted);cursor:pointer}
.lang svg{width:15px;height:15px;display:block}
.lang-label{white-space:nowrap}
.lang-caret{font-size:11px;color:var(--text-faint)}
.lang-panel{position:absolute;right:0;top:calc(100% + 8px);z-index:110;min-width:176px;padding:8px;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-lift)}
.lang-panel a{display:flex;align-items:center;width:100%;min-height:44px;padding:10px 12px;border-radius:var(--radius-sm);font-size:14px}
.lang-panel a:hover,.lang-panel a[aria-current="true"]{background:var(--lilac-faint);color:var(--accent)}
.login{display:inline-flex;align-items:center;justify-content:center;height:36px;padding:0 18px;border-radius:var(--radius-sm);background:var(--accent);color:var(--on-accent);font-size:14px;font-weight:600;box-shadow:0 6px 16px -6px var(--tint-14);transition:background var(--fast)}
.login:hover{background:var(--accent-dark)}
.menu-toggle{display:none;min-width:44px;min-height:44px;align-items:center;justify-content:center;border:0;background:var(--clear);color:var(--accent);border-radius:var(--radius-sm)}
.menu-toggle svg{width:22px;height:22px}
.menu-drawer{position:fixed;z-index:102;top:var(--header-height);left:0;right: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:16px var(--gutter) 32px;border-top:1px solid var(--border)}
.menu-drawer a{display:flex;align-items:center;width:100%;min-height:44px;padding:12px 16px;border-radius:var(--radius-sm)}
.menu-drawer a:hover,.menu-drawer a[aria-current="page"]{background:var(--lilac-faint);color:var(--accent)}
.drawer-languages{margin-top:16px;padding-top:16px;border-top:1px solid var(--border)}
html.nav-open{overflow:hidden}
.site-footer{padding-top:56px;padding-bottom:28px;background:var(--bg-panel-2);border-top:1px solid var(--border)}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:48px}
.footer-brand p{margin-top:16px;max-width:360px;color:var(--text-muted);font-size:14px;line-height:1.8}
.footer-heading{font-size:14px;font-weight:800;margin:0 0 12px}
.footer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 16px}
.footer-links a,.footer-languages a,.footer-legal a{display:inline-flex;align-items:center;min-height:28px;font-size:13px;color:var(--text-muted)}
.footer-links a:hover,.footer-languages a:hover,.footer-legal a:hover{color:var(--accent)}
.footer-languages{display:flex;flex-wrap:wrap;gap:8px 24px;padding-top:28px;padding-bottom:24px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;border-top:1px solid var(--border);padding-top:20px;font-size:12px;color:var(--text-muted)}
.footer-legal{display:flex;gap:20px;flex-wrap:wrap}
@media(min-width:1101px){
  html.nav-open{overflow:auto}
  .menu-drawer{display:none}
}
@media(max-width:1200px) and (min-width:1101px){
  .topbar-in{gap:18px}
  .dotnav li+li::before{margin-inline:7px}
  .topbar-act{gap:12px}
}
@media(max-width:1100px){
  .dotnav{display:none}
  .topbar-act{margin-left:auto;gap:12px}
  .menu-toggle{display:inline-flex}
}
@media(max-width:768px){
  h1{font-size:clamp(28px,6.5vw,40px);line-height:1.12;letter-spacing:-.02em}
  .sec{padding-top:56px;padding-bottom:56px}
  .grid-3{grid-template-columns:1fr}
  .grid-5{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:640px){
  :root{--gutter:16px}
  .no-break{white-space:normal}
  .tilt,[data-tilt]{transform:none}
  .decor-region{max-width:100%;overflow-x:clip}
  .topbar-in{gap:8px}
  .brand{gap:6px}
  .brand-word{font-size:17px}
  .brand img{width:26px;height:26px}
  .topbar-act{margin-left:auto;gap:6px}
  .lang{font-size:12px;gap:4px}
  .lang svg{display:none}
  .login{padding-inline:12px;font-size:13px}
  .card,.panel{padding:22px}
  .footer-grid{gap:28px 20px}
  .footer-links{grid-template-columns:1fr}
}
@media(max-width:360px){
  .topbar-act{gap:3px}
  .brand-word{font-size:16px}
  .brand img{width:24px;height:24px}
  .lang{font-size:11px}
  .login{padding-inline:10px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:0s!important;animation-duration:0s!important}
  .reveal,.reveal.pending{opacity:1;transform:none}
}