:root{
  --color-bg:#E9EEFB;
  --color-hero-top:#E4EAF9;
  --color-hero-bottom:#EEF2FC;
  --color-panel:#F7F9FE;
  --color-panel-2:#DDE4F5;
  --color-panel-3:#EEF1FC;
  --color-announcement:#E2E6FA;
  --color-header:rgba(247,249,254,.86);
  --color-border:#C9D3EA;
  --color-border-soft:#D9E0F1;
  --color-accent:#3A5BE0;
  --color-accent-dark:#2A45B8;
  --color-accent-soft:rgba(58,91,224,.10);
  --color-accent-shadow:rgba(58,91,224,.18);
  --color-text:#141A2E;
  --color-text-2:#1F2745;
  --color-muted:#55627F;
  --color-muted-2:#8A96B3;
  --color-success:#5BBF86;
  --color-success-soft:rgba(91,191,134,.14);
  --color-success-soft-2:rgba(91,191,134,.22);
  --color-forest:#155A3F;
  --color-warning:#E0A426;
  --color-error:#D9484B;
  --color-white:#FFFFFF;
  --color-white-glow:rgba(255,255,255,.92);
  --color-grid:rgba(58,91,224,.04);
  --color-ink-shadow:rgba(20,26,46,.42);
  --font-display:'Inter','Noto Sans SC','Noto Sans JP','Noto Sans KR','PingFang SC','Hiragino Sans','Microsoft YaHei',sans-serif;
  --font-body:'Inter','Noto Sans SC','Noto Sans JP','Noto Sans KR','PingFang SC','Hiragino Sans','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono','SFMono-Regular',Menlo,Consolas,'Liberation Mono',monospace;
  --radius-sm:8px;
  --radius-md:10px;
  --radius-lg:12px;
  --radius-xl:14px;
  --radius-2xl:24px;
  --radius-pill:999px;
  --gutter:24px;
  --header-height:64px;
  --section-space:96px;
  --shadow-panel:inset 0 1px 0 var(--color-white-glow),0 0 0 1px var(--color-border-soft),0 20px 44px -24px var(--color-accent-shadow);
  --shadow-window:inset 0 1px 0 var(--color-white-glow),0 0 0 1px var(--color-border),0 30px 60px -22px var(--color-accent-shadow),0 10px 24px -12px var(--color-accent-soft);
  --shadow-menu:0 0 0 1px var(--color-border-soft),0 20px 40px -16px var(--color-accent-shadow);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px;-webkit-text-size-adjust:100%}
html.nav-open{overflow:hidden}
body{margin:0;min-width:320px;font:400 17px/1.7 var(--font-body);color:var(--color-text);background-color:var(--color-bg);background-image:linear-gradient(var(--color-grid) 1px,transparent 1px),linear-gradient(90deg,var(--color-grid) 1px,transparent 1px);background-size:48px 48px;-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
img{height:auto}
button,input,select,textarea{font:inherit}
button{color:inherit}
a{color:inherit;text-decoration:none}
p,ul,ol,dl,blockquote,figure{margin-top:0}
ul[role="list"],.plain-list{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin-top:0;font-family:var(--font-display);font-weight:500;line-height:1.18;letter-spacing:-.02em;text-wrap:balance}
h1,.hero-title{font-size:clamp(52px,5.2vw,72px);line-height:1.1;letter-spacing:-.02em}
h2,.section-title{font-size:clamp(36px,4vw,52px)}
h3{font-size:24px}
p{color:var(--color-muted)}
code,kbd,samp{font-family:var(--font-mono)}
code{overflow-wrap:anywhere}
pre{max-width:100%;overflow:auto;padding:20px;border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-text);color:var(--color-panel)}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px}
::selection{background:var(--color-success-soft-2);color:var(--color-text)}
.wrap{width:100%;max-width:1208px;margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-top:var(--section-space);padding-bottom:var(--section-space)}
.section-head{max-width:760px;margin-bottom:40px}
.section-kicker{margin-bottom:10px;font:500 13px/1.4 var(--font-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--color-accent-dark)}
.section-lede{font-size:18px}
.muted{color:var(--color-muted)}
.mono{font-family:var(--font-mono)}
.no-break{white-space:nowrap}
.grad-text{display:inline-block;background:linear-gradient(90deg,var(--color-accent),var(--color-success));background-clip:text;-webkit-background-clip:text;color:transparent}
.panel,.card{min-width:0;border:1px solid var(--color-border-soft);border-radius:var(--radius-xl);background:var(--color-panel);box-shadow:var(--shadow-panel)}
.card{padding:24px}
.badge,.tag,.chip{display:inline-flex;align-items:center;gap:8px;max-width:100%;min-height:28px;padding:4px 12px;border:1px solid var(--color-border);border-radius:var(--radius-pill);background:var(--color-panel);color:var(--color-muted);font-size:13px;line-height:1.3;overflow:hidden}
.badge-dot,.status-dot{width:8px;height:8px;flex:0 0 8px;border-radius:50%;background:var(--color-accent);box-shadow:0 0 0 3px var(--color-accent-soft)}
.status-dot.is-success{background:var(--color-success);box-shadow:0 0 0 3px var(--color-success-soft)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:10px 28px;border:1.5px solid transparent;border-radius:var(--radius-pill);font:500 16px/1 var(--font-body);cursor:pointer;transition:transform .15s ease,background-color .15s ease,box-shadow .15s ease}
.btn:hover{transform:translateY(-1px)}
.btn-primary{color:var(--color-white);background:linear-gradient(180deg,var(--color-text-2),var(--color-text));box-shadow:0 12px 26px -12px var(--color-ink-shadow)}
.btn-secondary{color:var(--color-accent-dark);border-color:var(--color-accent);background:var(--color-white)}
.btn-secondary:hover{background:var(--color-accent-soft)}
.btn-small{min-height:38px;padding:8px 18px;font-size:14px}
.announcement{background:var(--color-announcement);border-bottom:1px solid var(--color-border-soft)}
.announcement a{display:flex;align-items:center;justify-content:center;gap:8px;min-height:38px;padding-inline:var(--gutter);font-size:13.5px;text-align:center}
.site-head{position:relative;z-index:60;background:var(--color-header);border-bottom:1px solid var(--color-border-soft);backdrop-filter:blur(10px)}
.head-inner{display:flex;align-items:center;min-height:var(--header-height);gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand img{width:34px;height:34px}
.brand-name{font:600 19px/1 var(--font-display);letter-spacing:-.02em}
.brand-local{font-weight:500;color:var(--color-muted)}
.desktop-nav{display:flex;align-items:center;gap:4px}
.nav-link,.nav-more-button{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:38px;padding:8px 12px;border:0;border-radius:var(--radius-md);background:transparent;color:var(--color-muted);font:500 14px/1 var(--font-body);cursor:pointer}
.nav-link:hover,.nav-link.is-active,.nav-more-button:hover{color:var(--color-text);background:var(--color-accent-soft)}
.nav-more{position:relative}
.nav-dropdown,.language-menu{position:absolute;top:calc(100% + 8px);z-index:70;min-width:180px;padding:6px;border-radius:var(--radius-lg);background:var(--color-panel);box-shadow:var(--shadow-menu);opacity:0;visibility:hidden;transform:translateY(-4px);transition:.15s ease}
.nav-more:hover .nav-dropdown,.nav-more:focus-within .nav-dropdown,.language-picker.is-open .language-menu{opacity:1;visibility:visible;transform:none}
.nav-dropdown a,.language-menu a{display:flex;align-items:center;min-height:42px;padding:8px 12px;border-radius:var(--radius-sm);color:var(--color-muted);font-size:14px}
.nav-dropdown a:hover,.language-menu a:hover,.language-menu a[aria-current="true"]{background:var(--color-accent-soft);color:var(--color-text)}
.head-tools{display:flex;align-items:center;gap:8px;margin-left:auto}
.language-picker{position:relative}
.language-menu{right:0}
.language-button,.menu-button{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:8px 12px;border:1px solid var(--color-border);border-radius:var(--radius-pill);background:var(--color-panel);color:var(--color-muted);cursor:pointer}
.menu-button{display:none;padding:8px}
.menu-button svg,.language-button svg{width:18px;height:18px}
.login-button{display:inline-flex;align-items:center;justify-content:center;min-height:38px;padding:8px 18px;border:1.5px solid var(--color-accent);border-radius:var(--radius-pill);background:var(--color-white);color:var(--color-accent-dark);font:500 14px/1 var(--font-body)}
.mobile-nav{display:none}
.mobile-nav a{display:flex;width:100%;align-items:center;min-height:48px;padding:11px 16px;border-radius:var(--radius-md)}
.site-footer{margin-top:80px;padding-top:64px;background:var(--color-text);color:var(--color-panel)}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1.4fr 1fr;gap:40px}
.footer-brand p,.site-footer a{color:var(--color-muted-2)}
.footer-brand .brand-name,.footer-title{color:var(--color-panel)}
.footer-title{margin-bottom:16px;font-size:14px;letter-spacing:.04em}
.footer-links{display:grid;gap:8px}
.footer-links a{min-height:28px}
.footer-links a:hover{color:var(--color-white)}
.footer-bottom{display:flex;justify-content:space-between;gap:24px;margin-top:48px;padding:20px 0;border-top:1px solid var(--color-text-2);font-size:13px;color:var(--color-muted-2)}
.footer-legal{display:flex;flex-wrap:wrap;gap:18px}
.reveal{transition:opacity .6s ease,transform .6s ease}
.reveal.pending{opacity:0;transform:translateY(16px)}
.reveal.shown{opacity:1;transform:none}
.decor-layer{pointer-events:none}
#server-status{position:relative;display:block;overflow:hidden;margin-bottom:32px}
#server-status + *{margin-top:0}
.prose{min-width:0}
.prose p,.prose li{max-width:76ch}
.prose h2,.prose h3{scroll-margin-top:96px}
.prose a:not(.btn){color:var(--color-accent-dark);text-decoration:underline;text-underline-offset:3px}
.prose blockquote{padding:18px 20px;border-left:4px solid var(--color-accent);background:var(--color-panel-3)}
@media (max-width:900px){
  .desktop-nav{display:none}
  .menu-button{display:inline-flex}
  .head-tools{margin-left:auto}
  .mobile-nav{position:absolute;top:100%;left:var(--gutter);right:var(--gutter);z-index:80;max-height:calc(100dvh - var(--header-height));overflow-y:auto;overscroll-behavior:contain;padding:10px;border:1px solid var(--color-border);border-radius:var(--radius-xl);background:var(--color-panel);box-shadow:var(--shadow-menu)}
  .mobile-nav.is-open{display:block}
  .mobile-nav .mobile-language{border-top:1px solid var(--color-border-soft);margin-top:8px;padding-top:8px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  h1,.hero-title{font-size:clamp(28px,9vw,40px)}
  h2,.section-title{font-size:34px}
  .section{padding-top:72px;padding-bottom:72px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:640px){
  :root{--gutter:16px;--section-space:64px}
  .no-break{white-space:normal}
  .tilt,.tilt-card,[class*="tilt"]{transform:none}
  .decor-layer{max-width:100%}
  .language-button span{display:none}
  .login-button{padding-inline:13px}
  .head-inner{gap:8px}
  .footer-grid{grid-template-columns:1fr}
  .btn{width:100%}
  .card{padding:20px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{scroll-behavior:auto!important;transition:none!important}
  .reveal,.reveal.pending{opacity:1;transform:none}
}