:root{
  color-scheme:light;
  --bg:#DCEBF7; --surface:#F2F8FD; --surface-2:#C8DDEE; --line:#A9C8DF;
  --text:#0D2B3E; --muted:#2F4E64; --faint:#466378;
  --brass:#163E66; --brass-hover:#0E2F50; --teal:#0E5A70; --plum:#94475F;
  --ok:#2C6B40; --warn:#8E4E10; --crit:#AA3A30;
  --display:"IBM Plex Serif","IBM Plex Sans",system-ui,serif;
  --body:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Consolas,monospace;
  --wrap:1160px;
}
html[lang="fa"]{
  --display:"Vazirmatn",system-ui,sans-serif;
  --body:"Vazirmatn",system-ui,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono","Vazirmatn",ui-monospace,monospace;
}
html[lang="fa"] body{line-height:1.8}
html[lang="fa"] :is(.h-display,.h-section,.tagline){letter-spacing:0}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth;scroll-padding-top:84px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--muted);font-family:var(--body);font-size:16px;line-height:1.625}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3{color:var(--text);text-wrap:balance}
a{color:var(--brass)}
a:hover{color:var(--brass-hover)}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px;border-radius:4px}
img{max-width:100%}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}
.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:24px}
@media (max-width:600px){.wrap{padding-inline:16px}}
.skip{position:absolute;inset-inline-start:-9999px}
.skip:focus{inset-inline-start:16px;top:16px;background:var(--surface);color:var(--text);padding:8px 12px;z-index:10}

/* header */
.site-head{position:sticky;top:0;z-index:5;background:rgba(220,235,247,.88);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);text-decoration:none;direction:ltr}
.brand img{display:block;width:auto}
.brand .sym{height:40px}
.brand .wm{height:17px}
.site-foot .brand .sym{height:56px}
.site-foot .brand .wm{height:22px}
@media (max-width:400px){.site-head .brand .wm{display:none}}
.site-nav{display:flex;gap:28px;margin-inline-start:auto;font-size:14px}
.site-nav a{color:var(--muted);text-decoration:none;padding-block:10px;white-space:nowrap}
.site-nav a:hover{color:var(--text)}
.nav-toggle{display:none;font:600 14px/1 var(--body);color:var(--text);background:transparent;border:1px solid var(--line);border-radius:8px;padding:0 14px;min-height:44px;cursor:pointer}
.nav-toggle[aria-expanded="true"]{background:var(--surface-2);border-color:var(--muted)}
@media (max-width:1180px){
  .site-nav{display:none}
  .site-nav.open{display:flex;flex-direction:column;gap:0;position:absolute;top:68px;inset-inline:0;margin:0;padding:8px 16px 16px;background:var(--bg);border-bottom:1px solid var(--line);font-size:16px}
  .site-nav.open a{display:flex;align-items:center;min-height:48px;border-bottom:1px solid var(--line)}
  .site-nav.open a:last-child{border-bottom:0}
  .nav-toggle{display:inline-flex;align-items:center}
}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:600 15px/1 var(--body);padding:14px 22px;border-radius:10px;text-decoration:none;border:1px solid transparent;cursor:pointer;transition:background .15s,border-color .15s}
.btn{position:relative;overflow:hidden;isolation:isolate}
.btn::after{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(115deg,transparent 20%,rgba(255,255,255,.5) 48%,transparent 76%);transform:translateX(-130%);transition:transform .65s ease}
.btn:hover::after{transform:translateX(130%)}
.btn-quiet::after{background:linear-gradient(115deg,transparent 20%,rgba(22,62,102,.22) 48%,transparent 76%)}
@media (prefers-reduced-motion:reduce){.btn::after{display:none}}
.btn-primary{background:var(--brass);color:#FFFFFF}
.btn-primary:hover{background:var(--brass-hover);color:#FFFFFF}
.btn-quiet{background:transparent;color:var(--text);border-color:var(--line)}
.btn-quiet:hover{border-color:var(--muted);color:var(--text)}
.btn-sm{padding:10px 16px;font-size:14px}
@media (max-width:1180px){.site-head .btn-sm{margin-inline-start:auto}}
@media (max-width:860px){.btn-sm{min-height:44px}}
@media (max-width:520px){.site-head .btn-sm{display:none}.site-head .lang{margin-inline-start:auto}}
.login-link{display:inline-flex;align-items:center;min-height:44px;padding-inline:6px;color:var(--text);text-decoration:none;font-size:14px;font-weight:600;white-space:nowrap}
.login-link:hover{color:var(--brass-hover)}
@media (max-width:520px){.site-head .login-link{margin-inline-start:auto}.site-head .login-link~.lang{margin-inline-start:0}}
.lang{display:inline-flex;align-items:center;color:var(--muted);text-decoration:none;font-size:14px;font-weight:600;padding:8px 10px;border:1px solid var(--line);border-radius:8px;line-height:1}
@media (max-width:860px){.lang{min-height:44px;padding-inline:14px}}
.lang:hover{color:var(--text);border-color:var(--muted)}
.lang[lang="fa"]{font-family:"Vazirmatn",var(--body)}
.lang[lang="en"]{font-family:"IBM Plex Sans",system-ui,sans-serif}

/* shared type */
.h-display{font-family:var(--display);font-weight:600;font-size:clamp(30px,4.2vw,40px);line-height:1.2;letter-spacing:-.01em}
.h-section{font-family:var(--display);font-weight:600;font-size:clamp(24px,3vw,32px);line-height:1.25;letter-spacing:-.005em}
.lede{font-size:18px;line-height:1.6;max-width:56ch}
.section{padding-block:104px;border-top:1px solid var(--line)}
@media (max-width:700px){.section{padding-block:72px}}
.section-head{display:grid;gap:14px;max-width:62ch;margin-bottom:48px}

/* status pills */
.pill{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;padding-block:3px;padding-inline:8px 10px;border-radius:999px;white-space:nowrap}
.pill svg{width:14px;height:14px;flex:none}
.pill.ok{color:var(--ok);background:rgba(44,107,64,.14)}
.pill.warn{color:var(--warn);background:rgba(142,78,16,.15)}
.pill.crit{color:var(--crit);background:rgba(170,58,48,.15)}

/* footer */
.site-foot{border-top:1px solid var(--line);padding-block:48px;font-size:14px}
.site-foot .wrap{display:flex;flex-wrap:wrap;gap:24px 48px;justify-content:space-between;align-items:flex-start}
.site-foot .tag{font-family:var(--display);color:var(--text);font-weight:600;font-size:16px;margin-top:10px}
.site-foot nav{display:flex;flex-wrap:wrap;gap:12px 28px}
.site-foot nav a{color:var(--muted);text-decoration:none;display:inline-flex;align-items:center;min-height:32px}
@media (max-width:860px){.site-foot nav a{min-height:44px}}
.site-foot nav a:hover{color:var(--text)}
.site-foot small{display:block;color:var(--faint);font-size:13px;margin-top:8px;max-width:48ch}

/* draft placeholders the founder must fill before launch */
.todo{background:rgba(142,78,16,.18);color:var(--warn);border:1px dashed rgba(142,78,16,.6);border-radius:4px;padding:0 6px;font-family:var(--mono);font-size:.85em}