:root{
  --c-bg:#FFFFFF;
  --c-surface:#FFFFFF;
  --c-panel:#F6F6F7;
  --c-panel-2:#EDEDEF;
  --c-line:#E3E3E6;
  --c-line-strong:#D2D3D8;
  --c-grid:#EEEEF1;
  --c-accent:#C4307A;
  --c-accent-dark:#93205A;
  --c-accent-soft:#FBEDF4;
  --c-on-accent:#FFFFFF;
  --c-text:#1C1D21;
  --c-muted:#6B6D76;
  --c-faint:#A3A5AD;
  --c-success:#1F9D63;
  --c-success-soft:#DDF2E7;
  --c-warn:#C98A0B;
  --c-warn-soft:#F7EBCF;
  --c-error:#D2382F;
  --c-neutral-soft:#ECECEF;
  --c-mask:#000000;
  --c-clear:transparent;
  --c-veil:rgba(28,29,33,.24);
  --pipe-edge:#D9DADF;
  --pipe-a:#E1E2E6;
  --pipe-b:#EAEAED;
  --pipe-c:#F3F3F5;
  --pipe-core:#F8F8F9;
  --pipe-shade:#CDCED4;
  --pipe-hl:#FFFFFF;
  --pipe-shadow:#1C1D21;
  --shadow-xs:0 1px 2px rgba(28,29,33,.05);
  --shadow-chip:0 1px 2px rgba(28,29,33,.04);
  --shadow-card:0 1px 2px rgba(28,29,33,.06),0 30px 64px -26px rgba(28,29,33,.20);
  --shadow-float:0 2px 6px rgba(28,29,33,.07),0 32px 64px -18px rgba(28,29,33,.28);
  --shadow-pop:0 1px 2px rgba(28,29,33,.06),0 12px 24px -12px rgba(28,29,33,.20);
  --shadow-knob:0 1px 2px rgba(28,29,33,.24);
  --shadow-accent:inset 0 1px 0 rgba(255,255,255,.20),0 1px 2px rgba(147,32,90,.30),0 14px 28px -12px rgba(196,48,122,.60);
  --r-container:28px;
  --r-card:20px;
  --r-float:16px;
  --r-tile:12px;
  --r-field:8px;
  --r-small:6px;
  --r-dot:50%;
  --r-pill:999px;
  --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;
  --text-xs:12px;
  --text-sm:14px;
  --text-base:16px;
  --text-lg:20px;
  --title-one:clamp(34px,3.05vw,44px);
  --title-two:clamp(26px,2.5vw,36px);
  --title-three:22px;
  --weight-normal:400;
  --weight-medium:500;
  --weight-semibold:600;
  --weight-bold:700;
  --weight-display:800;
  --gutter:clamp(20px,4.1667vw,60px);
  --reading-width:1120px;
  --nav-h:72px;
  --hero-h:790px;
  --space-section:96px;
  --ease-fast:200ms ease;
  --ease-reveal:650ms cubic-bezier(.2,.65,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
html,body{margin:0;padding:0}
body{background:var(--c-bg);color:var(--c-text);font-family:var(--font-body);font-size:var(--text-base);line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body,input,select,textarea,button{font-family:var(--font-body)}
a{color:inherit;text-decoration:none}
a,button,input,summary,select,textarea{-webkit-tap-highlight-color:var(--c-clear)}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
button{border:0}
img,svg{vertical-align:middle}
img{max-width:100%;height:auto}
button svg,a svg,.ico,.pf,.stat-dot,.eyebrow-dot{flex-shrink:0}
ul,ol{padding-left:1.5em}
h1,h2,h3,h4,p{margin-top:0}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--c-text);text-wrap:balance}
h1{font-size:var(--title-one);font-weight:var(--weight-display);line-height:1.16;letter-spacing:-.02em}
h2{font-size:var(--title-two);font-weight:var(--weight-display);line-height:1.25;letter-spacing:-.02em}
h3{font-size:var(--title-three);font-weight:var(--weight-bold);line-height:1.4}
p{margin-bottom:1.1em}
strong{font-weight:var(--weight-semibold)}
code,kbd,pre{font-family:var(--font-mono)}
code{overflow-wrap:anywhere}
pre{max-width:100%;min-width:0;overflow-x:auto;padding:20px;background:var(--c-panel);color:var(--c-text);border:1px solid var(--c-line);border-radius:var(--r-tile);font-size:var(--text-sm);line-height:1.8;tab-size:2}
pre code{overflow-wrap:normal;word-break:normal;white-space:pre}
:focus-visible{outline:2px solid var(--c-accent-dark);outline-offset:4px}
::selection{background:var(--c-accent-soft);color:var(--c-text)}
[hidden]{display:none!important}
.wrap{width:100%;max-width:calc(var(--reading-width) + var(--gutter)*2);margin-inline:auto;padding-inline:var(--gutter)}
.shell{width:100%;max-width:1440px;margin-inline:auto;padding-inline:var(--gutter)}
.header-shell{width:100%;max-width:min(100%,calc(1280px + var(--gutter)*2));margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-top:var(--space-section);padding-bottom:var(--space-section)}
.section-rule{border-top:1px solid var(--c-line)}
.section-heading{max-width:760px;margin-bottom:40px}
.section-heading p,.muted{color:var(--c-muted)}
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid>*,.hero-inner>*,.footer-grid>*,.topbar-inner>*,.panel-split>*{min-width:0}
.nowrap{white-space:nowrap}
.stack>*+*{margin-top:20px}
.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.ico{width:16px;height:16px;flex:none;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.ico-s{width:12px;height:12px}
.pf{width:15px;height:15px;flex:none;color:var(--c-text)}
.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}
.skip-link{position:fixed;top:8px;left:16px;z-index:100;transform:translateY(-160%);padding:10px 18px;border-radius:var(--r-pill);background:var(--c-text);color:var(--c-bg)}
.skip-link:focus{transform:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding:12px 26px;border:1px solid var(--c-clear);border-radius:var(--r-pill);font-family:var(--font-display);font-size:var(--text-base);font-weight:var(--weight-bold);letter-spacing:-.01em;line-height:1.5;text-align:center;transition:background-color var(--ease-fast),transform var(--ease-fast),box-shadow var(--ease-fast),border-color var(--ease-fast)}
.btn .ico{width:18px;height:18px;stroke-width:2}
.btn-primary{background:var(--c-accent);color:var(--c-on-accent);box-shadow:var(--shadow-accent)}
.btn-primary:hover,.btn-primary.is-hover{background:var(--c-accent-dark);color:var(--c-on-accent);transform:translateY(-1px)}
.btn-secondary{background:var(--c-panel);color:var(--c-text);border-color:var(--c-line)}
.btn-secondary .ico{color:var(--c-muted)}
.btn-secondary:hover,.btn-secondary.is-hover{background:var(--c-panel-2);color:var(--c-text);transform:translateY(-1px)}
.btn:active,.btn.is-pressed{transform:translateY(1px);box-shadow:var(--shadow-xs)}
.btn:disabled,.btn[aria-disabled="true"]{background:var(--c-panel-2);color:var(--c-muted);border-color:var(--c-line);box-shadow:none;cursor:not-allowed;transform:none}
.btn-small{min-height:44px;padding:10px 20px;font-size:var(--text-sm)}
.btn.is-focus{outline:2px solid var(--c-accent-dark);outline-offset:4px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.text-link{font-weight:var(--weight-semibold);text-decoration:underline;text-underline-offset:4px}
.text-link:hover{color:var(--c-accent-dark)}
.card{padding:28px;background:var(--c-surface);color:var(--c-text);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--shadow-card)}
.panel{padding:36px;background:var(--c-panel);color:var(--c-text);border:1px solid var(--c-line);border-radius:var(--r-container)}
.panel-secondary{background:var(--c-panel-2);color:var(--c-text)}
.card p:last-child,.panel p:last-child{margin-bottom:0}
.prose{max-width:780px;min-width:0;line-height:1.9}
.prose h2{margin-top:2.2em;margin-bottom:.8em}
.prose h3{margin-top:1.7em;margin-bottom:.7em}
.prose a:not(.btn){text-decoration:underline;text-underline-offset:4px}
.prose li+li{margin-top:.5em}
.prose :not(pre)>code{padding:.12em .35em;border-radius:var(--r-small);background:var(--c-panel);color:var(--c-text)}
.prose img{border-radius:var(--r-tile)}
.reveal{opacity:1;transform:none}
.reveal-ready .reveal:not(.shown){opacity:0;transform:translateY(16px)}
.reveal-ready .reveal{transition:opacity var(--ease-reveal),transform var(--ease-reveal)}
.reveal.shown{opacity:1;transform:none}
.decorated,.stage{position:relative;overflow-x:clip;isolation:isolate}
.topbar{position:relative;z-index:40;height:var(--nav-h);background:var(--c-bg);color:var(--c-text);border-bottom:1px solid var(--c-grid)}
.topbar-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:32px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:28px;height:28px;flex:none}
.brand-name{font-family:var(--font-display);font-weight:var(--weight-display);font-size:17px;letter-spacing:-.02em;color:var(--c-text)}
.desktop-nav{min-width:0;margin-left:auto}
.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:8px;min-height:38px;padding:7px 14px;border-radius:var(--r-pill);font-size:14.5px;font-weight:var(--weight-medium);color:var(--c-text);transition:background-color var(--ease-fast),color var(--ease-fast)}
.nav-link .ico{color:var(--c-muted)}
.nav-link:hover{background:var(--c-panel);color:var(--c-text)}
.nav-link.is-active{color:var(--c-accent);background:var(--c-accent-soft);font-weight:var(--weight-semibold)}
.nav-link.is-active .ico{color:var(--c-accent)}
.header-tools{display:flex;align-items:center;gap:14px;flex-shrink:0}
.nav-sep{width:1px;height:20px;background:var(--c-line);color:var(--c-text)}
.lang-box{position:relative}
.lang{display:inline-flex;align-items:center;gap:7px;min-height:36px;padding:7px 13px 7px 12px;border-radius:var(--r-pill);background:var(--c-surface);color:var(--c-text);border:1px solid var(--c-line);font-size:var(--text-sm);font-weight:var(--weight-medium);cursor:pointer;box-shadow:var(--shadow-chip)}
.lang .ico,.lang-caret{color:var(--c-muted)}
.lang-caret{font-size:11px}
.lang-short{display:none}
.language-menu{position:absolute;right:0;top:calc(100% + 12px);width:190px;margin:0;padding:6px;list-style:none;border:1px solid var(--c-line);border-radius:var(--r-float);background:var(--c-surface);color:var(--c-text);box-shadow:var(--shadow-float)}
.language-menu a{display:flex;align-items:center;justify-content:space-between;min-height:44px;padding:10px 12px;border-radius:var(--r-field)}
.language-menu a:hover,.language-menu a[aria-current]{background:var(--c-panel);color:var(--c-text)}
.menu-toggle{display:none;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:10px;border:1px solid var(--c-line);border-radius:var(--r-pill);background:var(--c-surface);color:var(--c-text)}
.menu-toggle .ico{width:20px;height:20px}
.mobile-drawer{position:absolute;inset:var(--nav-h) 0 auto;max-height:calc(100dvh - var(--nav-h));overflow-y:auto;overscroll-behavior:contain;padding:16px var(--gutter) 24px;background:var(--c-surface);color:var(--c-text);border-bottom:1px solid var(--c-line);box-shadow:var(--shadow-float);z-index:2}
.mobile-drawer ul{list-style:none;margin:0;padding:0}
.mobile-drawer a{display:flex;width:100%;align-items:center;gap:12px;min-height:48px;padding:12px 16px;border-radius:var(--r-field)}
.drawer-languages{margin-top:16px;border-top:1px solid var(--c-line);padding-top:12px}
.drawer-languages p{margin:0;padding:8px 16px;font-size:var(--text-sm);color:var(--c-muted)}
.nav-veil{position:fixed;inset:var(--nav-h) 0 0;z-index:30;background:var(--c-veil);color:var(--c-text);border:0}
html.nav-open{overflow:hidden}
.site-footer{border-top:1px solid var(--c-line);padding-top:64px;padding-bottom:30px;background:var(--c-bg);color:var(--c-text)}
.footer-grid{display:grid;grid-template-columns:1.4fr .7fr 1.3fr .7fr;gap:40px}
.footer-brand p{margin-top:20px;max-width:29em;color:var(--c-muted);font-size:var(--text-sm)}
.footer-title{font-size:var(--text-sm);font-weight:var(--weight-bold);margin-bottom:16px}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links a{display:inline-block;padding:6px 0;font-size:var(--text-sm);color:var(--c-muted)}
.footer-links a:hover{color:var(--c-text);text-decoration:underline;text-underline-offset:4px}
.footer-links a[aria-current]{color:var(--c-text);font-weight:var(--weight-semibold)}
.footer-bottom{margin-top:48px;padding-top:24px;border-top:1px solid var(--c-line);font-size:var(--text-xs);color:var(--c-muted)}
@media(min-width:1201px){
  .mobile-drawer,.nav-veil{display:none!important}
}
@media(max-width:1200px){
  .desktop-nav,.nav-sep{display:none}
  .header-tools{margin-left:auto}
  .menu-toggle{display:inline-flex}
  .topbar-inner{gap:16px}
}
@media(max-width:900px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:768px){
  :root{--title-one:clamp(24px,6.6vw,30px);--title-two:26px;--space-section:64px}
}
@media(max-width:640px){
  :root{--gutter:20px}
  .grid-2,.grid-3,.grid-4,.footer-grid{grid-template-columns:minmax(0,1fr)}
  .brand-name{font-size:14px}
  .brand{gap:7px}
  .brand-mark{width:24px;height:24px}
  .header-tools{gap:8px;margin-left:auto}
  .topbar-inner{gap:8px}
  .lang-full{display:none}
  .lang-short{display:inline}
  .lang{padding-inline:10px;min-height:40px}
  .lang .ico{display:none}
  .card{padding:22px}
  .panel{padding:24px}
  .btn{min-height:48px;padding:11px 20px;font-size:15px}
  .tilt,.float-route,.float-dns,[data-tilt]{transform:none!important}
  .footer-grid{gap:28px}
  .footer-bottom{margin-top:32px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal-ready .reveal:not(.shown){opacity:1;transform:none}
}