:root{
  color-scheme:light;
  --bg:#E6EBF4;--bg-panel:#F6F8FC;--bg-sunk:#D8E0EE;--border:#C6D0E1;
  --accent:#9A3B1E;--accent-dark:#73290F;--link:#2F5BB7;
  --text:#1A2030;--muted:#566177;--faint:#7D879B;
  --success:#2E8A5A;--warn:#B7791F;--error:#C42345;--surface:#FFFFFF;
  --hero-top:#EEF2F9;--hero-bottom:#DFE5F1;--bar-bg:#E9F0FB;
  --glow:rgba(154,59,30,.06);--glow-edge:rgba(154,59,30,0);
  --shadow-accent-12:rgba(154,59,30,.12);--shadow-accent-10:rgba(154,59,30,.10);
  --ink-shadow:rgba(26,32,48,.22);--veil:rgba(26,32,48,.25);
  --glass:rgba(255,255,255,.14);--glass-soft:rgba(255,255,255,.10);
  --glass-strong:rgba(255,255,255,.24);--glass-edge:rgba(255,255,255,.26);
  --glass-hi:rgba(255,255,255,.36);--sheen:rgba(255,255,255,.08);
  --panel-lit:rgba(255,255,255,.12);--panel-lit-2:rgba(255,255,255,.05);
  --panel-lit-0:rgba(255,255,255,0);--card-drop:rgba(58,16,4,.30);
  --dot-ring:rgba(255,255,255,.20);--on-accent:#FFFFFF;
  --on-accent-2:rgba(255,255,255,.80);--on-accent-3:rgba(255,255,255,.58);
  --line-on-accent:rgba(255,255,255,.14);--knob:#73290F;
  --flag-red:#B5463E;--flag-blue:#3A4E7E;--flag-white:#F6F8FC;
  --clear:transparent;
  --r-dot:2px;--r-xs:4px;--r-sm:8px;--r-md:10px;--r-lg:12px;--r-xl:24px;--r-round:50%;--r-switch:13px;--r-sheen:27px;
  --f-display:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --f-body:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --body-size:17px;--h1-size:64px;--h2-size:40px;--h3-size:28px;
  --gutter:32px;--content:1280px;--head-height:68px;--anchor-offset:88px;--toc-offset:96px;
  --ease:cubic-bezier(.2,.65,.3,1);--fast:.2s;--reveal-time:.35s;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:var(--anchor-offset);scroll-behavior:smooth}
html.nav-open{overflow:hidden}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--f-body);font-size:var(--body-size);line-height:1.75;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button{cursor:pointer;color:inherit}
button:disabled{cursor:not-allowed}
img{display:block;max-width:100%;height:auto}
svg{flex-shrink:0}
p,h1,h2,h3,h4,ul,ol,figure,blockquote{margin:0}
h1,h2,h3,h4{font-family:var(--f-display);font-weight:400;overflow-wrap:break-word;text-wrap:balance}
h1,.h1{font-size:var(--h1-size);line-height:1.1;letter-spacing:-.02em}
h2,.h2{font-size:var(--h2-size);line-height:1.25;letter-spacing:-.015em}
h3{font-size:var(--h3-size);line-height:1.3;letter-spacing:-.01em}
:focus-visible{outline:2px solid var(--link);outline-offset:3px;border-radius:var(--r-xs)}
[hidden]{display:none!important}
.wrap{width:100%;max-width:calc(var(--content) + var(--gutter)*2);padding-inline:var(--gutter);margin-inline:auto}
.wrap>* , :where(.grid,.feat-grid,.footer-grid,.head-row)>*{min-width:0}
.section{padding-top:80px;padding-bottom:80px}
.section-title{margin-bottom:32px}
.mono{font-family:var(--f-mono);font-variant-numeric:tabular-nums}
.muted{color:var(--muted)}
.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}
.svg-defs{position:absolute;width:0;height:0;overflow:hidden}
.text-link,.prose a{color:var(--link);text-decoration:underline;text-underline-offset:4px}
.text-link{display:inline-flex;align-items:center;min-height:24px}
.prose{max-width:840px;overflow-wrap:break-word}
.prose>*+*{margin-top:24px}
.prose h2{margin-top:56px}
.prose h3{margin-top:32px}
.prose li+li{margin-top:8px}
code{font-family:var(--f-mono);overflow-wrap:anywhere;font-size:.88em;background:var(--bg-sunk);border-radius:var(--r-xs);padding:2px 5px}
pre{max-width:100%;overflow-x:auto;padding:24px;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--r-lg)}
pre code{background:var(--clear);padding:0;white-space:pre;overflow-wrap:normal}
.panel-card{padding:32px;border:1px solid var(--border);border-radius:var(--r-lg);background:var(--bg-panel);box-shadow:0 16px 40px -24px var(--shadow-accent-10)}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 24px;border-radius:var(--r-md);font-size:16px;font-weight:500;line-height:1.2;flex-shrink:0;white-space:nowrap;transition:transform var(--fast) var(--ease),box-shadow var(--fast) var(--ease),background-color var(--fast)}
.btn svg{width:16px;height:16px}
.btn-solid,.btn-primary{background:var(--text);color:var(--surface);border:1px solid var(--text);box-shadow:0 12px 24px -12px var(--ink-shadow)}
.btn-solid:hover,.btn-primary:hover,.btn.is-hover{transform:translateY(-1px);box-shadow:0 16px 28px -12px var(--ink-shadow)}
.btn:active,.btn.is-active{transform:translateY(1px)}
.btn-line,.btn-secondary{background:var(--surface);color:var(--text);border:1px solid var(--text)}
.btn-line:hover,.btn-secondary:hover{background:var(--bg-panel)}
.btn:disabled,.btn[aria-disabled="true"]{background:var(--bg-sunk);color:var(--muted);border:1px solid var(--border);box-shadow:none;transform:none}
.btn.is-focus{outline:2px solid var(--link);outline-offset:3px}
.notice{background:var(--bar-bg);border-bottom:1px solid var(--border)}
.notice-text{min-height:40px;display:flex;align-items:center;justify-content:center;gap:10px;font-size:14px;line-height:20px;padding:6px 16px;color:var(--text)}
.notice-link{display:inline-flex;align-items:center;gap:4px;min-height:24px;color:var(--link);font-weight:500;white-space:nowrap}
.notice-link svg{width:16px;height:16px;transition:transform var(--fast)}
.notice-link:hover svg{transform:translateX(3px)}
.top{position:relative;overflow-x:clip;max-width:100%;background:linear-gradient(180deg,var(--hero-top),var(--hero-bottom))}
.top::before{content:"";position:absolute;inset:-12% -12% 42% 50%;background:radial-gradient(closest-side,var(--glow) 0%,var(--glow) 35%,var(--glow-edge) 100%);pointer-events:none;z-index:0;animation:breathe 18s ease-in-out infinite;transform-origin:60% 40%}
@keyframes breathe{0%,100%{opacity:.7;transform:scale(1)}50%{opacity:1;transform:scale(1.06)}}
.site-head,#site-header{position:relative;z-index:50}
.head-row{display:flex;align-items:center;height:var(--head-height);gap:8px;flex-wrap:nowrap;position:relative;z-index:53}
.brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--f-display);font-size:20px;font-weight:600;letter-spacing:-.01em;line-height:1;flex-shrink:0}
.brand img{width:26px;height:26px;flex-shrink:0}
.brand-word{white-space:nowrap}
.nav{margin-left:36px;flex:1;min-width:0}
.nav-list{display:flex;align-items:center;list-style:none;margin:0;padding:0;gap:2px}
.nav-link{display:inline-flex;align-items:center;gap:6px;min-height:36px;padding:0 11px;border-radius:var(--r-sm);font-size:15px;line-height:1.3;color:var(--muted);white-space:nowrap;transition:color var(--fast),background-color var(--fast)}
.nav-link svg{width:16px;height:16px}
.nav-link:hover{color:var(--text);background:var(--bg-panel)}
.nav-link[aria-current="page"]{color:var(--text);font-weight:500}
.head-tools{margin-left:auto;display:flex;align-items:center;gap:12px;flex-shrink:0}
.lang-picker{position:relative}
.lang{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:var(--clear);border-radius:var(--r-sm);font-size:14px;line-height:1;color:var(--muted)}
.lang svg{width:16px;height:16px}
.lang-text{white-space:nowrap}
.lang:hover{background:var(--bg-panel);color:var(--text)}
.lang-panel{position:absolute;right:0;top:calc(100% + 8px);z-index:60;min-width:176px;padding:8px;border:1px solid var(--border);border-radius:var(--r-lg);background:var(--bg-panel);box-shadow:0 20px 40px -16px var(--ink-shadow)}
.lang-panel a{display:flex;align-items:center;min-height:44px;padding:8px 12px;border-radius:var(--r-sm);font-size:14px}
.lang-panel a:hover,.lang-panel a[aria-current]{background:var(--bg-sunk)}
.btn-login{display:inline-flex;align-items:center;justify-content:center;min-height:38px;padding:0 18px;border:1px solid var(--text);border-radius:var(--r-sm);background:var(--surface);font-size:15px;font-weight:500;line-height:1;white-space:nowrap;transition:background-color var(--fast),color var(--fast)}
.btn-login:hover{background:var(--text);color:var(--surface)}
.menu-toggle{display:none;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:8px;border:1px solid var(--border);border-radius:var(--r-sm);background:var(--bg-panel)}
.menu-toggle svg{width:20px;height:20px}
.menu-drawer{position:fixed;top:var(--head-height);right:0;bottom:0;left:0;height:calc(100dvh - var(--head-height));max-height:calc(100dvh - var(--head-height));padding:16px var(--gutter) 32px;background:var(--bg-panel);z-index:52;overflow-y:auto;overscroll-behavior:contain}
.menu-drawer a{display:flex;align-items:center;gap:10px;width:100%;min-height:48px;padding:12px 16px;border-bottom:1px solid var(--border);font-size:16px}
.menu-drawer a svg{width:18px;height:18px}
.drawer-languages{display:block;margin-top:24px}
.menu-veil{position:fixed;inset:var(--head-height) 0 0;background:var(--veil);z-index:51}
.hero{position:relative;z-index:1;padding-top:28px}
.hero-copy{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;text-align:center}
.badge{display:inline-flex;align-items:center;gap:10px;min-height:28px;padding:4px 12px;border:1px solid var(--border);border-radius:var(--r-sm);background:var(--bg-panel);font-size:13px;line-height:1.3;color:var(--muted);max-width:100%;overflow-wrap:anywhere}
.hero-copy>.badge{margin-bottom:16px}
.badge-mark{width:7px;height:7px;border-radius:var(--r-dot);background:var(--accent);flex-shrink:0}
.badge-sep{width:1px;height:12px;background:var(--border);flex-shrink:0}
.badge .mono{font-size:12px;letter-spacing:.02em;color:var(--text)}
.h1-line{display:block}
.h1-em{font-style:normal;color:var(--accent)}
@supports (background-clip:text){.h1-em{background:linear-gradient(120deg,var(--accent) 10%,var(--accent-dark) 90%);background-clip:text;color:var(--clear)}}
.lede{margin-top:16px;max-width:880px;font-size:20px;line-height:1.5;color:var(--muted)}
.lede strong{font-weight:500;color:var(--text)}
.cta-row{display:flex;flex-wrap:wrap;gap:16px;margin-top:24px}
.trust{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 22px;margin-top:20px;padding:0;list-style:none;font-size:15px;line-height:22px;color:var(--muted)}
.trust li{display:inline-flex;align-items:center;gap:6px}
.trust svg{width:14px;height:14px;color:var(--text)}
.marks{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:10px 24px;margin-top:12px;min-height:28px}
.mark-group{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px 16px;padding:0;list-style:none}
.mark-label{font-size:12.5px;line-height:1;letter-spacing:.04em;color:var(--faint)}
.mark{display:inline-flex;align-items:center;gap:6px;font-size:14px;line-height:28px;color:var(--muted)}
.pf{width:18px;height:18px;color:var(--text)}
.fl{width:20px;height:20px;overflow:hidden;border-radius:var(--r-xs)}
.mark-div{width:1px;height:18px;background:var(--border)}
.fr{fill:var(--flag-red)}.fw{fill:var(--flag-white)}.fb{fill:var(--flag-blue)}
.fsw{fill:none;stroke:var(--flag-white)}.fsr{fill:none;stroke:var(--flag-red)}
.fe{fill:none;stroke:var(--border)}
.site-footer{padding-top:64px;padding-bottom:32px;background:var(--bg-sunk);border-top:1px solid var(--border)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px}
.footer-brand p{max-width:360px;margin-top:20px;color:var(--muted);font-size:15px}
.footer-heading{font-size:16px;font-weight:500;margin-bottom:16px}
.footer-links{list-style:none;padding:0;display:grid;gap:8px}
.footer-links a,.footer-languages a,.footer-legal a{display:inline-flex;align-items:center;min-height:28px;font-size:14px;color:var(--muted)}
.footer-links a:hover,.footer-languages a:hover,.footer-legal a:hover{color:var(--text);text-decoration:underline;text-underline-offset:4px}
.footer-languages{display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:40px}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-top:24px;padding-top:24px;border-top:1px solid var(--border);font-size:13px;color:var(--muted)}
.footer-legal{display:flex;flex-wrap:wrap;gap:16px}
.reveal{transition:opacity var(--reveal-time) var(--ease),transform var(--reveal-time) var(--ease)}
.reveal.pending{opacity:0;transform:translateY(16px)}
.reveal.shown{opacity:1;transform:none}
#server-status{display:block;position:static;max-width:100%;min-width:0;overflow:hidden;margin-top:32px;margin-bottom:32px}
#server-status+*{margin-top:32px}
#server-status :where(.grid,[class*="grid"]){min-width:0;max-width:100%}
#server-status :where(.grid,[class*="grid"])>*{min-width:0}
@media(max-width:1240px){.nav{margin-left:16px}.nav-link{padding-inline:8px;font-size:14px}.head-tools{gap:8px}}
@media(max-width:1120px){.nav{display:none}.menu-toggle{display:inline-flex}.head-tools{margin-left:auto}}
@media(min-width:1121px){.menu-drawer,.menu-veil{display:none!important}}
@media(max-width:768px){
  :root{--gutter:16px;--h1-size:38px;--h2-size:30px;--h3-size:24px}
  .section{padding-top:56px;padding-bottom:56px}
  .hero{padding-top:20px}.h1{line-height:1.15}
  .lede{font-size:17px;line-height:1.65}
  .cta-row{justify-content:center}.mark-div{display:none}
  .grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .panel-card{padding:24px}
  .top::before{max-width:100%}
}
@media(max-width:640px){
  .no-break{white-space:normal}
  .lang-text{display:none}
  .notice-text{font-size:13px;flex-wrap:wrap;gap:0 8px}
  .head-tools{margin-left:auto;gap:4px}
  .brand{font-size:18px;gap:6px}.brand img{width:24px;height:24px}
  .btn-login{padding-inline:12px;font-size:14px}
  .lang{padding-inline:6px}
  .tilt,[data-tilt]{transform:none}
}
@media(max-width:360px){.brand{font-size:16px}.head-row{gap:4px}.btn-login{padding-inline:10px}.head-tools{gap:2px}}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .top::before{animation:none}
  *,*::before,*::after{transition-duration:0s!important}
  .reveal,.reveal.pending{opacity:1;transform:none}
}