:root {
  color-scheme: light;
  --bg:#F8EFDF;
  --bg-top:#FBF5EA;
  --bg-bottom:#F3E8D4;
  --panel:#FFFAF1;
  --panel-2:#EFE4D0;
  --paper-white:#FFFDF8;
  --border:#E2D4BC;
  --border-strong:#CDBB9C;
  --accent:#2D45B4;
  --accent-dark:#1F2F86;
  --accent-deep:#1E2A6E;
  --accent-mid:#7F92E8;
  --accent-soft:#A9B6F2;
  --accent-soft-line:rgba(169,182,242,.45);
  --accent-wash:rgba(45,69,180,.07);
  --accent-tint:rgba(169,182,242,.24);
  --accent-tint-2:rgba(169,182,242,.05);
  --accent-glow:rgba(169,182,242,.26);
  --text:#2A1F16;
  --text-muted:#6F6151;
  --ink:#1E160F;
  --ink-card:#2A2017;
  --on-dark:#F6EBD8;
  --on-dark-muted:rgba(246,235,216,.64);
  --on-dark-faint:rgba(246,235,216,.12);
  --on-blue:rgba(255,253,248,.92);
  --on-blue-muted:rgba(255,253,248,.62);
  --brass:#C8963E;
  --brass-hi:#E6C07A;
  --brass-lo:#8E6524;
  --success:#3E7D4F;
  --success-hi:#74AA82;
  --success-ring:rgba(62,125,79,.16);
  --warn:#B7791F;
  --error:#C2412D;
  --vinyl-1:#140E0A;
  --vinyl-2:#221810;
  --vinyl-3:#3A2B1E;
  --groove:rgba(246,235,216,.07);
  --sheen:rgba(255,250,241,.20);
  --sheen-2:rgba(255,250,241,.10);
  --flag-red:#D22F27;
  --flag-hk:#DE2910;
  --flag-white:#FFFFFF;
  --flag-blue:#2E3F8F;
  --flag-navy:#1E2B6A;
  --flag-ring:rgba(42,31,22,.16);
  --glass:rgba(42,31,22,.88);
  --glass-line:rgba(200,150,62,.34);
  --glass-hl:rgba(230,192,122,.30);
  --glass-line-soft:rgba(246,235,216,.12);
  --hl-top:rgba(255,255,255,.28);
  --hl-edge:rgba(255,255,255,.12);
  --veil:rgba(30,22,15,.45);
  --clear:transparent;
  --mask-solid:#000000;
  --shadow-accent:0 48px 96px -28px rgba(45,69,180,.12),0 24px 48px -26px rgba(31,47,134,.12);
  --shadow-soft:0 22px 44px -20px rgba(45,69,180,.16),0 4px 12px -6px rgba(42,31,22,.10);
  --shadow-pill:0 22px 48px -18px rgba(45,69,180,.22),0 2px 6px rgba(42,31,22,.05);
  --shadow-btn:0 10px 22px -10px rgba(45,69,180,.60);
  --shadow-glass:0 28px 56px -18px rgba(20,12,6,.50);
  --shadow-record:0 36px 64px -24px rgba(10,14,46,.62);
  --font-display:Georgia,'Times New Roman','Songti SC','STSong','Noto Serif CJK SC','Source Han Serif SC','Hiragino Mincho ProN','Yu Mincho','Nanum Myeongjo',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;
  --fs-micro:10px;
  --fs-caption:12px;
  --fs-small:13px;
  --fs-note:13.5px;
  --fs-ui:14px;
  --fs-nav:15px;
  --fs-body:16px;
  --fs-lead:20px;
  --fs-brand:23px;
  --fs-card:26px;
  --fs-h3:28px;
  --fs-h2:44px;
  --fs-h1:64px;
  --weight-regular:400;
  --weight-medium:500;
  --weight-strong:600;
  --lh-body:1.6;
  --lh-reading:1.85;
  --lh-heading:1.18;
  --tracking-heading:-.02em;
  --r-xs:6px;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:16px;
  --r-xl:20px;
  --r-cta-mobile:24px;
  --r-pill:999px;
  --r-circle:50%;
  --gutter:32px;
  --content-width:1344px;
  --reading-width:800px;
  --header-height:109px;
  --anchor-offset:125px;
  --toc-offset:16px;
  --toc-landing:96px;
  --ease-ui:cubic-bezier(.2,.65,.3,1);
  --time-ui:.2s;
  --time-reveal:.35s;
  --grain:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .16 0 0 0 0 .12 0 0 0 0 .09 0 0 0 .55 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:var(--anchor-offset)}
html.nav-open{overflow:hidden}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:var(--fs-body);line-height:var(--lh-body);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body::after{content:"";position:fixed;inset:0;pointer-events:none;z-index:100;background-image:var(--grain);opacity:.12;mix-blend-mode:multiply}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
button:disabled,[aria-disabled="true"]{cursor:not-allowed}
img{display:block;max-width:100%;height:auto}
svg{flex-shrink:0;max-width:100%}
ul,ol{list-style:none;margin:0;padding:0}
p,h1,h2,h3,h4,figure,blockquote{margin:0}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:var(--weight-regular);line-height:var(--lh-heading);text-wrap:balance;overflow-wrap:break-word}
h1{font-size:var(--fs-h1);letter-spacing:var(--tracking-heading);line-height:1.12}
h2{font-size:var(--fs-h2);letter-spacing:var(--tracking-heading)}
h3{font-size:var(--fs-h3)}
strong{font-weight:var(--weight-strong)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:var(--r-xs)}
[hidden]{display:none!important}
.no-break{white-space:nowrap}
.wrap{width:100%;max-width:var(--content-width);margin-inline:auto;padding-inline:var(--gutter)}
.reading-wrap{width:100%;max-width:var(--reading-width);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-top:72px;padding-bottom:80px}
.section-heading{margin-bottom:32px;max-width:24em}
.section-heading p{margin-top:16px;color:var(--text-muted)}
.grid-three{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid-five{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}
.grid-three>*,.grid-five>*,.hero-inner>*,.footer-grid>*{min-width:0}
.panel,.card{min-width:0;background:var(--panel);border:1px solid var(--border);border-radius:var(--r-md);padding:24px;box-shadow:inset 0 1px 0 var(--paper-white)}
.panel p,.card p{margin-top:12px;color:var(--text-muted)}
.muted{color:var(--text-muted)}
.mono{font-family:var(--font-mono);font-size:var(--fs-caption);font-variant-numeric:tabular-nums}
.kw{color:var(--accent)}
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.icon{display:block;width:24px;height:24px}
.btn,.btn-primary,.btn-ghost,.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;max-width:100%;padding:10px 22px;border:0;border-radius:var(--r-pill);font-family:var(--font-body);font-size:var(--fs-nav);font-weight:var(--weight-strong);line-height:1.4;flex-shrink:0;white-space:nowrap;transition:background var(--time-ui),color var(--time-ui),transform var(--time-ui),box-shadow var(--time-ui)}
.btn-primary{min-height:48px;padding:12px 22px 12px 24px;background:linear-gradient(180deg,var(--accent),var(--accent-dark));color:var(--paper-white);font-size:var(--fs-body);box-shadow:var(--shadow-btn),inset 0 1px 0 var(--hl-top)}
.btn-primary span{transition:transform var(--time-ui)}
.btn-primary:hover{transform:translateY(-1px)}
.btn-primary:hover span{transform:translateX(3px)}
.btn-primary:active{transform:translateY(0);background:var(--accent-dark)}
.btn-ghost,.btn-secondary{background:var(--clear);color:var(--text);box-shadow:inset 0 0 0 1.5px var(--border-strong)}
.btn-ghost:hover,.btn-secondary:hover{background:var(--panel);box-shadow:inset 0 0 0 1.5px var(--text)}
.btn-primary:disabled,.btn-primary[aria-disabled="true"]{background:var(--panel-2);color:var(--text-muted);box-shadow:inset 0 0 0 1px var(--border);transform:none}
.btn-ghost:disabled,.btn-secondary:disabled{color:var(--text-muted);background:var(--panel-2)}
.prose{min-width:0;line-height:var(--lh-reading);overflow-wrap:break-word}
.prose p,.prose ul,.prose ol,.prose blockquote,.prose pre,.prose table{margin-block:20px}
.prose h2{margin-top:56px;margin-bottom:24px}
.prose h3{margin-top:32px;margin-bottom:16px}
.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.prose ul{list-style:disc;padding-left:24px}
.prose ol{list-style:decimal;padding-left:26px}
.prose li+li{margin-top:8px}
code{font-family:var(--font-mono);font-size:.9em;overflow-wrap:anywhere;background:var(--panel-2);border-radius:var(--r-xs);padding:2px 5px}
pre{max-width:100%;min-width:0;overflow-x:auto;padding:20px;background:var(--ink);color:var(--on-dark);border-radius:var(--r-md)}
pre code{padding:0;background:var(--clear);white-space:pre;overflow-wrap:normal}
#server-status{position:relative;display:flow-root;width:100%;max-width:100%;min-width:0;overflow:hidden;margin-block:32px}
#server-status+*{margin-top:32px}
#server-status>*{min-width:0;max-width:100%}
.reveal{transition:opacity var(--time-reveal) var(--ease-ui),transform var(--time-reveal) var(--ease-ui)}
.reveal.pending{opacity:0;transform:translateY(16px)}
.reveal.shown{opacity:1;transform:none}
.announce{background:var(--ink);color:var(--on-dark);font-size:var(--fs-note);letter-spacing:.01em}
.announce-in{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:4px 14px;min-height:36px;padding-top:6px;padding-bottom:6px;text-align:center}
.announce-in a{display:inline-flex;align-items:center;min-height:24px;color:var(--accent-soft);font-weight:var(--weight-strong)}
.announce-in a:hover{text-decoration:underline;text-underline-offset:3px}
#site-header{position:relative;z-index:40}
.topbar{position:relative;z-index:43;background:var(--bg-top);border-bottom:1px solid var(--border)}
.topbar-in{display:flex;align-items:center;flex-wrap:nowrap;gap:40px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;min-height:44px}
.brand-mark{display:block;width:34px;height:34px}
.brand-word{font-family:var(--font-display);font-size:var(--fs-brand);letter-spacing:-.01em;color:var(--text)}
.brand-sub{padding-left:10px;border-left:1px solid var(--border-strong);font-size:var(--fs-small);font-weight:var(--weight-regular);color:var(--text-muted)}
.mainnav{flex:1;min-width:0}
.mainnav>ul{display:flex;align-items:center;list-style:none;margin:0;padding:0;gap:2px}
.mainnav a,.more-btn{display:inline-flex;align-items:center;gap:6px;min-height:38px;padding:0 14px;border-radius:var(--r-pill);font-size:var(--fs-nav);color:var(--text);white-space:nowrap;transition:background var(--time-ui)}
.mainnav a:hover,.more-btn:hover{background:var(--panel-2)}
.mainnav a[aria-current="page"]{font-weight:var(--weight-strong)}
.mainnav a[aria-current="page"]::before{content:"";width:5px;height:5px;flex-shrink:0;border-radius:var(--r-circle);background:var(--text)}
.more{position:relative}
.more-btn{border:0;background:var(--clear);cursor:pointer;list-style:none}
.more-btn::-webkit-details-marker{display:none}
.more-btn svg{width:10px;height:10px;transition:transform var(--time-ui)}
.more[open] .more-btn svg{transform:rotate(180deg)}
.more:not([open]) .more-panel{display:none}
.more-panel{position:absolute;z-index:46;top:calc(100% + 10px);left:-8px;width:400px;max-width:calc(100vw - 40px);display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:12px;background:var(--panel);border-radius:var(--r-md);box-shadow:var(--shadow-soft),inset 0 0 0 1px var(--border)}
.more-h{padding:4px 10px 6px;font-size:var(--fs-caption);letter-spacing:.08em;color:var(--text-muted)}
.mainnav .more-panel a{display:flex;align-items:center;min-height:44px;padding:8px 10px;border-radius:var(--r-sm);font-size:var(--fs-ui)}
.topbar-tools{display:flex;align-items:center;gap:10px;margin-left:auto;flex-shrink:0}
.language{position:relative}
.lang{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-width:44px;width:auto;min-height:38px;padding:0 12px;border:0;border-radius:var(--r-pill);background:var(--clear);font-size:var(--fs-ui);color:var(--text-muted);cursor:pointer;white-space:nowrap}
.lang span{white-space:nowrap}
.lang:hover{background:var(--panel-2)}
.lang svg{width:15px;height:15px}
.lang-panel{position:absolute;z-index:47;right:0;top:calc(100% + 10px);width:176px;padding:8px;background:var(--panel);border:1px solid var(--border);border-radius:var(--r-md);box-shadow:var(--shadow-soft)}
.lang-panel a{display:flex;align-items:center;min-height:44px;padding:8px 12px;border-radius:var(--r-sm);font-size:var(--fs-ui)}
.lang-panel a:hover,.lang-panel a[aria-current="true"]{background:var(--panel-2);color:var(--accent-dark)}
.login{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:8px 22px;border-radius:var(--r-pill);box-shadow:inset 0 0 0 1.5px var(--text);font-size:var(--fs-nav);font-weight:var(--weight-strong);white-space:nowrap;color:var(--text);transition:background var(--time-ui),color var(--time-ui)}
.login:hover{background:var(--text);color:var(--bg-top)}
.menu-toggle{display:none;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:10px;border:1px solid var(--border-strong);border-radius:var(--r-pill);background:var(--clear)}
.menu-toggle svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}
.mobile-drawer{position:fixed;z-index:42;top:var(--header-height);right:0;width:min(400px,100%);height:calc(100dvh - var(--header-height));max-height:calc(100dvh - var(--header-height));padding:20px var(--gutter) 32px;background:var(--panel);border-left:1px solid var(--border);overflow-y:auto;overscroll-behavior:contain}
.mobile-drawer a{display:flex;align-items:center;width:100%;min-height:46px;padding:10px 14px;border-radius:var(--r-sm);font-size:var(--fs-nav)}
.mobile-drawer a:hover,.mobile-drawer a[aria-current="page"]{background:var(--panel-2);color:var(--accent-dark)}
.drawer-languages{margin-top:20px;padding-top:16px;border-top:1px solid var(--border)}
.nav-veil{position:fixed;z-index:41;inset:var(--header-height) 0 0;border:0;background:var(--veil);width:100%;height:calc(100dvh - var(--header-height));cursor:pointer}
.site-footer{background:var(--panel-2);border-top:1px solid var(--border)}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:48px;padding-top:56px;padding-bottom:40px}
.footer-brand p{max-width:28em;margin-top:20px;color:var(--text-muted);font-size:var(--fs-ui)}
.footer-title{font-family:var(--font-body);font-size:var(--fs-small);font-weight:var(--weight-strong);margin-bottom:16px;letter-spacing:.04em}
.footer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 16px}
.footer-links a,.footer-languages a,.footer-legal a{display:inline-flex;align-items:center;min-height:28px;font-size:var(--fs-ui)}
.footer-links a:hover,.footer-languages a:hover,.footer-legal a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.footer-languages{display:flex;flex-wrap:wrap;gap:8px 20px;padding-top:20px;padding-bottom:20px;border-top:1px solid var(--border-strong)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px 24px;padding-top:20px;padding-bottom:24px;border-top:1px solid var(--border-strong);font-size:var(--fs-small);color:var(--text-muted)}
.footer-legal{display:flex;flex-wrap:wrap;gap:12px 20px}
@media(min-width:861px){.mobile-drawer,.nav-veil,.menu-toggle{display:none!important}}
@media(max-width:1200px){:root{--fs-h1:56px}.topbar-in{gap:28px}.mainnav a,.more-btn{padding-inline:10px}}
@media(max-width:1080px){:root{--fs-h1:48px}.brand-sub{display:none}.topbar-in{gap:18px}}
@media(max-width:960px){.grid-five{grid-template-columns:repeat(3,minmax(0,1fr))}.footer-grid{gap:32px;grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}
@media(max-width:860px){.mainnav{display:none}.menu-toggle{display:inline-flex}.topbar-tools{margin-left:auto}.topbar-in{gap:12px}}
@media(max-width:768px){:root{--fs-h1:40px;--fs-h2:32px;--fs-h3:25px}.section{padding-top:48px;padding-bottom:56px}.grid-three{grid-template-columns:1fr}.grid-five{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){
  :root{--gutter:20px;--fs-h1:36px}
  .no-break{white-space:normal}
  .announce{font-size:var(--fs-caption)}
  .topbar-tools{gap:6px;margin-left:auto}
  .topbar-in{gap:8px}
  .login{padding-inline:14px;font-size:var(--fs-ui)}
  .lang{padding-inline:8px}
  .lang span{font-size:var(--fs-caption)}
  .brand-word{font-size:var(--fs-lead)}
  .brand-mark{width:30px;height:30px}
  .brand{gap:7px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-brand{grid-column:auto}
  .tilt,.tilt-card,[data-tilt]{transform:none}
  .hero,.stage,.decoration{max-width:100%;overflow-x:clip}
}
@media(max-width:380px){
  :root{--gutter:16px}
  .brand-word{font-size:var(--fs-body)}
  .brand-mark{width:27px;height:27px}
  .topbar-tools{gap:4px}
  .login{padding-inline:10px}
  .lang{padding-inline:6px}
  .lang span{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
  .grid-five{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal,.reveal.pending,.reveal.shown{opacity:1;transform:none}
}