:root {
  --c-bg:#f5f4ef;
  --c-panel:#ffffff;
  --c-panel-2:#ecebe4;
  --c-border:#e2e0d8;
  --c-navy:#0d2b3e;
  --c-navy-deep:#061a26;
  --c-navy-lift:#15405a;
  --c-text:#0f2433;
  --c-muted:#5b6b75;
  --c-yellow:#f5c24c;
  --c-yellow-press:#eeb534;
  --c-coral:#e0785a;
  --c-coral-deep:#cf654a;
  --c-success:#2f8a5b;
  --c-warn:#c98a12;
  --c-error:#c4452f;
  --c-coral-tint:rgba(224,120,90,.13);
  --c-yellow-tint:rgba(245,194,76,.16);
  --c-success-tint:rgba(47,138,91,.16);
  --c-navy-tint:rgba(13,43,62,.06);
  --c-navy-mark:rgba(13,43,62,.09);
  --c-navy-soft:rgba(13,43,62,.62);
  --c-on-navy:rgba(255,255,255,.92);
  --c-on-navy-muted:rgba(255,255,255,.76);
  --c-on-navy-line:rgba(255,255,255,.22);
  --font-display:"Inter","Noto Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:"Inter","Noto Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --r-frame:28px;
  --r-card:22px;
  --r-memo:16px;
  --r-mark:10px;
  --r-pill:999px;
  --shadow-card:0 1px 2px rgba(13,43,62,.06),0 12px 32px rgba(13,43,62,.08);
  --shadow-sheet:0 1px 2px rgba(6,26,38,.20),0 24px 52px rgba(6,26,38,.36);
  --shadow-memo:0 1px 2px rgba(13,43,62,.14),0 16px 30px rgba(6,26,38,.30);
  --shadow-frame:0 2px 4px rgba(13,43,62,.08),0 40px 70px -28px rgba(13,43,62,.45);
  --shadow-cta:0 1px 2px rgba(13,43,62,.10),0 10px 22px rgba(201,138,18,.24);
  --focus-ring:0 0 0 3px rgba(245,194,76,.6);
  --head-h:76px;
  --row-h:62px;
  --gutter:clamp(20px,3.35vw,48px);
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html.nav-open{overflow:hidden}
body{margin:0;background:var(--c-bg);color:var(--c-text);font-family:var(--font-body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
button,input,select{font:inherit}
a{color:var(--c-navy)}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:none;box-shadow:var(--focus-ring)}
img,svg{max-width:100%}
svg{flex-shrink:0}
figure{margin:0}
h1,h2,h3{font-family:var(--font-display);color:var(--c-navy);line-height:1.2;text-wrap:balance}
h1{font-size:clamp(34px,3.5vw,48px);letter-spacing:-.02em;font-weight:800}
h2{font-size:clamp(26px,2.8vw,38px);letter-spacing:-.02em}
h3{font-size:clamp(20px,2vw,26px)}
code,pre{font-family:var(--font-mono)}
code{overflow-wrap:anywhere}
pre{max-width:100%;overflow-x:auto;white-space:pre;overflow-wrap:normal;padding:18px;border-radius:var(--r-memo);background:var(--c-navy-deep);color:var(--c-on-navy)}
pre code{overflow-wrap:normal}
[id]{scroll-margin-top:24px}
.wrap{width:100%;max-width:1200px;margin-inline:auto;padding-inline:var(--gutter)}
.wrap--reading{max-width:880px}
.section{padding-block:clamp(64px,7vw,112px)}
.section--white{background:var(--c-panel);color:var(--c-text)}
.section--gray{background:var(--c-panel-2);color:var(--c-text)}
.section--navy{background:var(--c-navy);color:var(--c-on-navy)}
.section--navy h2,.section--navy h3{color:var(--c-on-navy)}
.section--navy a:not(.btn):not(.store-button){color:var(--c-yellow)}
.eyebrow{margin:0;color:var(--c-coral-deep);font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase}
.section--navy .eyebrow{color:var(--c-yellow)}
.nowrap-word{white-space:nowrap}
.ico{fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.ico-fill{fill:currentColor}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:54px;padding:0 28px;border:1.5px solid transparent;border-radius:var(--r-pill);font-family:var(--font-display);font-size:16px;font-weight:700;text-align:center;text-decoration:none;cursor:pointer;transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.btn svg{width:18px;height:18px}
.btn--solid{background:var(--c-yellow);color:var(--c-navy);box-shadow:var(--shadow-cta)}
.btn--solid:hover{background:var(--c-yellow-press);color:var(--c-navy)}
.btn--line{border-color:var(--c-navy);background:transparent;color:var(--c-navy)}
.btn--line:hover{background:var(--c-navy);color:var(--c-panel)}
.btn--quiet{background:var(--c-panel-2);color:var(--c-navy)}
.btn--quiet:hover{background:var(--c-border)}
.btn:disabled{opacity:.55;cursor:not-allowed}
.card{min-width:0;padding:clamp(20px,3vw,32px);border:1px solid var(--c-border);border-radius:var(--r-card);background:var(--c-panel);color:var(--c-text);box-shadow:var(--shadow-card)}
.card h3{margin-top:0}
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card-grid>*{min-width:0}
.prose{min-width:0}
.prose p,.prose li{line-height:1.85}
.prose p{margin-block:1em}
.prose h2{margin-top:2.2em}
.prose h3{margin-top:1.7em}
.prose a{text-underline-offset:3px}
.prose img{height:auto}
.reveal{opacity:0;transform:translateY(14px);transition:opacity .65s var(--ease),transform .65s var(--ease)}
.reveal.shown{opacity:1;transform:none}
.masthead{position:relative;z-index:30;background:var(--c-bg)}
.masthead__inner{display:flex;align-items:center;gap:24px;width:100%;max-width:min(100%,calc(1280px + var(--gutter) * 2));height:var(--head-h);margin-inline:auto;padding-inline:var(--gutter)}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;color:var(--c-navy);text-decoration:none;border-radius:var(--r-mark)}
.brand__mark{display:block;width:38px;height:38px;flex:none;border:1px solid var(--c-border);border-radius:50%;background:var(--c-panel);box-shadow:var(--shadow-card)}
.brand__mark img{display:block;width:100%;height:100%;border-radius:50%}
.brand__text{display:flex;flex-direction:column;line-height:1.2}
.brand__name{font-family:var(--font-display);font-size:16px;font-weight:800;letter-spacing:-.01em}
.brand__sub{margin-top:2px;color:var(--c-muted);font-size:11.5px}
.topnav{min-width:0;margin-left:auto}
.topnav__list{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
.topnav__link{display:inline-flex;align-items:center;gap:7px;min-height:38px;padding:0 12px;border:1px solid transparent;border-radius:var(--r-pill);color:var(--c-muted);font-size:14.5px;font-weight:500;text-decoration:none;white-space:nowrap;transition:background-color .2s var(--ease),color .2s var(--ease)}
.topnav__link .ico{width:16px;height:16px}
.topnav__link:hover{color:var(--c-navy);background:var(--c-navy-tint)}
.topnav__link[aria-current="page"]{color:var(--c-navy);font-weight:600;background:var(--c-panel);border-color:var(--c-border);box-shadow:var(--shadow-card)}
.masthead__tools{position:relative;display:flex;align-items:center;gap:8px;flex-shrink:0}
.langpick{display:inline-flex;align-items:center;gap:8px;min-height:38px;padding:0 14px;border:1px solid var(--c-border);border-radius:var(--r-pill);background:transparent;color:var(--c-text);font-size:14px;cursor:pointer;white-space:nowrap}
.langpick .ico{width:16px;height:16px;color:var(--c-muted)}
.langpick__caret{font-size:11px;color:var(--c-muted)}
.langpick__short{display:none}
.langmenu{position:absolute;top:calc(100% + 10px);right:0;z-index:36;width:190px;margin:0;padding:8px;list-style:none;border:1px solid var(--c-border);border-radius:var(--r-memo);background:var(--c-panel);color:var(--c-text);box-shadow:var(--shadow-card)}
.langmenu[hidden]{display:none}
.langmenu a{display:block;min-height:44px;padding:9px 12px;border-radius:var(--r-mark);color:var(--c-text);text-decoration:none}
.langmenu a:hover,.langmenu a[aria-current="true"]{background:var(--c-panel-2);color:var(--c-navy)}
.menu-toggle{display:none;align-items:center;justify-content:center;min-width:44px;min-height:44px;border:1px solid var(--c-border);border-radius:var(--r-mark);background:var(--c-panel);color:var(--c-navy);cursor:pointer}
.menu-toggle svg{width:22px;height:22px}
.mobile-nav{display:none}
.site-footer{background:var(--c-navy-deep);color:var(--c-on-navy)}
.site-footer__inner{max-width:calc(1280px + var(--gutter) * 2);margin-inline:auto;padding:72px var(--gutter) 24px}
.site-footer__grid{display:grid;grid-template-columns:1.3fr 1fr 1.4fr .8fr;gap:36px}
.site-footer .brand{color:var(--c-on-navy)}
.site-footer .brand__sub{color:var(--c-on-navy-muted)}
.site-footer__intro{max-width:29em;color:var(--c-on-navy-muted);font-size:14px}
.site-footer h2{margin:0 0 15px;color:var(--c-on-navy);font-size:14px}
.site-footer ul{margin:0;padding:0;list-style:none}
.site-footer li+li{margin-top:8px}
.site-footer a:not(.brand){color:var(--c-on-navy-muted);font-size:14px;text-decoration:none}
.site-footer a:hover{text-decoration:underline;text-underline-offset:4px;color:var(--c-on-navy)}
.site-footer__bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:54px;padding-top:22px;border-top:1px solid var(--c-on-navy-line);color:var(--c-on-navy-muted);font-size:13px}
@media(max-width:1200px){
  .topnav{display:none}
  .masthead__tools{margin-left:auto}
  .menu-toggle{display:inline-flex}
  .mobile-nav{position:absolute;top:100%;right:0;left:0;z-index:31;display:block;max-height:calc(100dvh - var(--head-h));overflow-y:auto;overscroll-behavior:contain;padding:12px var(--gutter) 24px;border-top:1px solid var(--c-border);background:var(--c-panel);color:var(--c-text);box-shadow:var(--shadow-card)}
  .mobile-nav[hidden]{display:none}
  .mobile-nav ul{list-style:none;margin:0;padding:0}
  .mobile-nav a{display:flex;align-items:center;gap:12px;width:100%;min-height:48px;padding:10px 14px;border-radius:var(--r-mark);color:var(--c-text);text-decoration:none}
  .mobile-nav a:hover,.mobile-nav a[aria-current="page"]{background:var(--c-panel-2);color:var(--c-navy)}
  .mobile-nav .ico{width:18px;height:18px}
  .mobile-nav__languages{margin-top:14px;padding-top:14px;border-top:1px solid var(--c-border)}
  .mobile-nav__languages strong{display:block;padding:4px 14px;color:var(--c-muted);font-size:13px}
}
@media(max-width:768px){
  h1{font-size:clamp(24px,6vw,30px)}
  .card-grid,.site-footer__grid{grid-template-columns:1fr}
  .site-footer__grid{gap:28px}
  .section{padding-block:64px}
}
@media(max-width:640px){
  :root{--gutter:20px}
  .masthead__inner{gap:10px}
  .masthead .brand{min-width:0;flex:1}
  .masthead .brand__text{min-width:0}
  .masthead .brand__sub{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .brand__name{font-size:14px}
  .brand__sub{font-size:10px}
  .langpick{padding-inline:10px}
  .langpick__full{display:none}
  .langpick__short{display:inline}
  .tilt,[class*="tilt-"]{transform:none}
  .site-footer__inner{padding-top:54px}
}
@media(max-width:360px){
  :root{--gutter:16px}
  .brand__mark{width:34px;height:34px}
  .brand{gap:7px}
  .langpick{gap:4px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .btn,.topnav__link{transition:none}
}