:root{
  --bg:#EAEBF7;--bg-top:#F2F3FB;--bg-bottom:#E4E6F4;--panel:#F8F9FE;--panel-2:#DCDFF0;--canvas:#F1F2FA;
  --border:#CDD1E6;--border-soft:#DCDFEE;--rule:#D2D5E8;--accent:#0A93B5;--accent-dark:#076680;--accent-soft:#5DC7DF;--accent-wash:#DCF0F6;
  --text:#141A2E;--muted:#5A6180;--faint:#8A90AC;--success:#1F9D6A;--success-deep:#17845A;--success-wash:#D3EEE2;--warn:#C98A12;--error:#CC3B4A;
  --ink:#0E1530;--ink-2:#252F57;--white:#FFFFFF;--wash-a:#E6EDF8;--wash-b:#D9ECF5;--chip-idle:#E1E3F1;--chip-idle-edge:#D6D9EB;--butter-wash:#F7EDC4;
  --glow-sky:#BCD6F6;--glow-peach:#F8CBA8;--glow-pink:#F2C2DA;--glow-butter:#F6E6A6;
  --chip-sky-a:#8DC2EE;--chip-sky-b:#5B9FE0;--chip-peach-a:#F5B48B;--chip-peach-b:#E98E68;--chip-pink-a:#EDA7C9;--chip-pink-b:#D97DAA;
  --flag-red:#C8243B;--flag-blue:#22397F;--flag-navy:#16246B;--flag-white:#FFFFFF;--flag-black:#1B1B1F;--flag-gold:#F2C230;--flag-hk:#DE2910;--flag-sg:#E0283A;--flag-jp:#C8102E;
  --flag-ring:rgb(20 26 46 / .14);--tint-6:rgb(10 147 181 / .06);--tint-10:rgb(10 147 181 / .10);--tint-14:rgb(10 147 181 / .14);
  --ink-shadow:rgb(14 21 48 / .24);--ink-shadow-soft:rgb(14 21 48 / .18);--hl:rgb(255 255 255 / .9);--hl-soft:rgb(255 255 255 / .62);--hl-ink:rgb(255 255 255 / .16);
  --glass:rgb(248 249 254 / .55);--glass-strong:rgb(248 249 254 / .86);--dot:rgb(20 26 46 / .04);--dot-edge:rgb(14 21 48 / .12);--stripe:rgb(10 147 181 / .09);--stripe-soft:rgb(90 97 128 / .07);--clear:transparent;
  --font-display:"Inter","Noto Sans SC","PingFang SC","Hiragino Sans GB","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;
  --r-xl:28px;--r-lg:20px;--r-md:16px;--r-sm:12px;--r-xs:8px;--r-tiny:4px;--r-mini:6px;--r-round:50%;--r-pill:999px;
  --gutter:24px;--content:1200px;--reading:800px;--header-height:94px;--toc-offset:110px;--anchor-offset:184px;
  --shadow-panel:inset 0 1px 0 var(--white),0 18px 48px -24px var(--tint-14);
  --ease: cubic-bezier(.2,.7,.2,1);--fast:.2s;--reveal-time:.35s;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:110px}
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}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0;padding:0}
button:disabled{cursor:not-allowed}
img{display:block;max-width:100%;height:auto}
svg{flex-shrink:0}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3{font-family:var(--font-display);text-wrap:balance;overflow-wrap:break-word}
h1{font-size:clamp(52px,4.7vw,68px);line-height:1.12;font-weight:900;letter-spacing:-.02em}
h2{font-size:clamp(28px,3vw,40px);line-height:1.25;font-weight:800;letter-spacing:-.02em}
h3{font-size:22px;line-height:1.35;font-weight:750}
ul,ol{padding-left:1.4em}
p+ p{margin-top:16px}
:where(a,button,input,select,textarea,summary,[tabindex]):focus-visible{outline:2px solid var(--accent-dark);outline-offset:3px}
[hidden]{display:none!important}
.no-break{white-space:nowrap}
.wrap{width:100%;max-width:var(--content);margin-inline:auto;padding-inline:var(--gutter)}
.reading-wrap{width:100%;max-width:var(--reading);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-top:64px;padding-bottom:64px}
.section-heading{margin-bottom:28px}
.section-heading p{margin-top:12px;color:var(--muted)}
:where(.grid,.card-grid,.plan-grid,.platform-grid,.footer-grid)>*{min-width:0}
:where(main,article,section,nav,header,footer,div){min-width:0}
code{font-family:var(--font-mono);font-size:.88em;overflow-wrap:anywhere;background:var(--panel-2);border-radius:var(--r-tiny);padding:2px 5px}
pre{max-width:100%;overflow-x:auto;padding:20px;border:1px solid var(--border);border-radius:var(--r-sm);background:var(--panel);line-height:1.7}
pre code{padding:0;background:var(--clear);white-space:pre;overflow-wrap:normal}
.prose{overflow-wrap:anywhere}
.prose p,.prose li{line-height:1.9}
.prose h2{margin-top:48px;margin-bottom:20px}
.prose h3{margin-top:28px;margin-bottom:14px}
.prose a:not(.btn){color:var(--accent-dark);text-decoration:underline;text-underline-offset:3px}
.prose ul,.prose ol{margin-block:16px}
.muted{color:var(--muted)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:9px 20px;border-radius:var(--r-sm);font-size:15px;font-weight:600;letter-spacing:-.005em;flex-shrink:0;white-space:nowrap;transition:transform var(--fast),box-shadow var(--fast)}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-go,.btn-primary{color:var(--white);background:linear-gradient(180deg,var(--ink-2),var(--ink));box-shadow:inset 0 1px 0 var(--hl-ink),0 0 0 1px var(--ink),0 10px 22px -10px var(--ink-shadow)}
.btn-plan,.btn-secondary{color:var(--text);background:var(--panel);box-shadow:inset 0 0 0 1px var(--border),inset 0 1px 0 var(--white),0 4px 12px -8px var(--tint-14)}
.btn:disabled,.btn[aria-disabled="true"]{color:var(--muted);background:var(--panel-2);box-shadow:inset 0 0 0 1px var(--border);transform:none}
.btn[aria-disabled="true"]{pointer-events:none}
.btn-small{min-height:36px;padding:6px 14px;font-size:14px}
.btn-demo-hover{transform:translateY(-1px);box-shadow:inset 0 1px 0 var(--hl-ink),0 0 0 1px var(--ink),0 14px 24px -8px var(--ink-shadow)}
.btn-demo-focus{outline:2px solid var(--accent-dark);outline-offset:3px}
.card,.panel{padding:24px;background:var(--panel);border:1px solid var(--border-soft);border-radius:var(--r-lg);box-shadow:var(--shadow-panel)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.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}
.decorated-section{position:relative;overflow-x:clip}
#server-status{position:relative;display:block;min-height:120px;width:100%;max-width:100%;overflow:hidden;margin-block:24px}
#server-status>*{max-width:100%;min-width:0}
#server-status+*{margin-top:24px}
.strip-note{display:flex;align-items:center;justify-content:center;min-height:34px;padding:6px 16px;font-size:13px;font-weight:500;text-align:center;background:repeating-linear-gradient(135deg,var(--stripe) 0 3px,var(--clear) 3px 11px),linear-gradient(90deg,var(--wash-a),var(--wash-b) 50%,var(--wash-a));border-bottom:1px solid var(--rule)}
.strip-note a{display:inline-flex;align-items:center;gap:8px;min-height:22px}
.strip-note a:hover{color:var(--accent-dark)}
.dotsep{color:var(--faint)}
#site-header{position:sticky;top:0;z-index:50}
.topbar{position:relative;z-index:53;height:60px;background:var(--glass-strong);border-bottom:1px solid var(--rule);backdrop-filter:blur(12px)}
.topbar-in{max-width:var(--content);height:100%;margin:0 auto;padding:0 var(--gutter);display:flex;align-items:center;gap:24px;flex-wrap:nowrap}
.brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:800;font-size:19px;letter-spacing:-.02em;white-space:nowrap;flex-shrink:0}
.brand img{width:30px;height:30px}
.brand-local{font-size:.85em;font-weight:500;color:var(--muted)}
.route-nav{margin:0 auto;flex:1;min-width:0}
.route-nav ul{display:flex;align-items:center;justify-content:center;list-style:none;margin:0;padding:0}
.route-nav li{display:flex;align-items:center;font-size:14.5px;color:var(--muted);white-space:nowrap}
.route-nav li+li::before{content:"·";margin:0 13px;color:var(--faint)}
.route-nav a{padding:6px 1px;min-height:32px;display:inline-flex;align-items:center}
.route-nav a:hover{color:var(--text)}
.route-nav a[aria-current="page"]{color:var(--text);font-weight:650;box-shadow:inset 0 -2px 0 var(--text)}
.top-tools{display:flex;align-items:center;gap:16px;flex-shrink:0}
.lang-wrap{position:relative}
.lang{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:36px;min-width:24px;width:auto;font-size:14px;color:var(--muted);white-space:nowrap}
.lang span{white-space:nowrap}
.lang:hover{color:var(--text)}
.lang-panel{position:absolute;right:0;top:calc(100% + 10px);z-index:60;min-width:168px;padding:6px;border-radius:var(--r-sm);background:var(--panel);border:1px solid var(--border);box-shadow:var(--shadow-panel)}
.lang-panel a{display:flex;align-items:center;min-height:40px;padding:8px 12px;border-radius:var(--r-xs)}
.lang-panel a:hover,.lang-panel a[aria-current="true"]{background:var(--accent-wash);color:var(--accent-dark)}
.signin{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:36px;padding:0 14px;border-radius:var(--r-xs);font-size:14px;font-weight:600;background:var(--panel);box-shadow:inset 0 0 0 1px var(--border),inset 0 1px 0 var(--white),0 4px 12px -8px var(--tint-14);white-space:nowrap}
.signin:hover{box-shadow:inset 0 0 0 1px var(--text)}
.menu-toggle{display:none;align-items:center;justify-content:center;flex-direction:column;gap:4px;min-width:44px;min-height:44px;border-radius:var(--r-xs)}
.menu-line{display:block;width:20px;height:2px;background:currentColor;border-radius:var(--r-pill)}
.mobile-drawer{display:none;position:fixed;top:var(--header-height);right:0;left:0;z-index:52;height:calc(100dvh - var(--header-height));max-height:calc(100dvh - var(--header-height));overflow-y:auto;overscroll-behavior:contain;padding:16px var(--gutter) 32px;background:var(--panel)}
.mobile-drawer a{display:flex;align-items:center;width:100%;min-height:44px;padding:12px 16px;border-bottom:1px solid var(--border-soft)}
.mobile-drawer a[aria-current]{color:var(--accent-dark);font-weight:650}
.drawer-languages{margin-top:20px;padding-top:12px;border-top:1px solid var(--border)}
.nav-veil{position:fixed;inset:var(--header-height) 0 0;z-index:51;background:var(--ink-shadow)}
html.nav-open{overflow:hidden}
html.nav-open .menu-toggle{background:var(--panel-2)}
.site-footer{background:var(--panel-2);border-top:1px solid var(--rule);padding-top:48px;padding-bottom:24px}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1.25fr;gap:40px}
.footer-brand p{max-width:300px;margin-top:16px;font-size:14px;color:var(--muted)}
.footer-heading{font-size:14px;font-weight:700;margin-bottom:12px}
.footer-links{list-style:none;margin:0;padding:0;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:14px}
.footer-links a:hover,.footer-languages a:hover,.footer-legal a:hover{color:var(--accent-dark);text-decoration:underline}
.footer-languages{display:flex;flex-wrap:wrap;gap:8px 24px;padding-block:24px;margin-top:24px;border-top:1px solid var(--border)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;padding-top:16px;border-top:1px solid var(--border);font-size:13px;color:var(--muted)}
.footer-legal{display:flex;flex-wrap:wrap;gap:8px 18px}
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.fl-w{fill:var(--flag-white)}.fl-r{fill:var(--flag-red)}.fl-b{fill:var(--flag-blue)}.fl-n{fill:var(--flag-navy)}.fl-k{fill:var(--flag-black)}.fl-g{fill:var(--flag-gold)}.fl-hk{fill:var(--flag-hk)}.fl-sg{fill:var(--flag-sg)}.fl-jp{fill:var(--flag-jp)}
.flag{position:relative;display:inline-block;flex-shrink:0;border-radius:var(--r-tiny);overflow:hidden;line-height:0}
.flag svg{display:block;width:24px;height:16px}
.flag::after{content:"";position:absolute;inset:0;border-radius:inherit;box-shadow:inset 0 0 0 1px var(--flag-ring);pointer-events:none}
.flag--lg{border-radius:var(--r-mini)}
.flag--lg svg{width:32px;height:22px}
@media(min-width:769px){.mobile-drawer,.nav-veil{display:none!important}}
@media(max-width:1100px){.route-nav li+li::before{margin-inline:9px}.topbar-in{gap:16px}.top-tools{gap:12px}}
@media(max-width:960px) and (min-width:769px){.route-nav li{font-size:13px}.route-nav li+li::before{margin-inline:6px}.brand{font-size:17px}.top-tools{gap:8px}.lang{font-size:12px}}
@media(max-width:768px){
  :root{--gutter:16px}
  h1{font-size:36px;line-height:1.15}
  h2{font-size:28px}
  .section{padding-top:40px;padding-bottom:40px}
  .route-nav{display:none}
  .topbar-in{gap:10px}
  .top-tools{margin-left:auto;gap:8px}
  .menu-toggle{display:flex}
  .mobile-drawer:not([hidden]){display:block}
  .brand{font-size:17px;gap:7px}
  .lang{font-size:12px;gap:4px}
  .signin{padding-inline:10px}
  .card-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:640px){
  .no-break{white-space:normal}
  .tilt,[data-tilt]{transform:none}
  .decorated-section{max-width:100%}
  .card,.panel{padding:20px}
}
@media(max-width:359px){
  .topbar-in{gap:6px}
  .brand{font-size:15px;gap:5px}
  .brand img{width:25px;height:25px}
  .top-tools{gap:4px}
  .lang{font-size:11px}
  .signin{font-size:12px;padding-inline:8px}
  .footer-grid{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .reveal,.reveal.pending{opacity:1;transform:none}
}