/* Shared stylesheet for /guides/ pages. Tokens and masthead/footer mirror
   site/index.html so the guides read as part of the same site. Written in CSS
   logical properties, like the home page, so an Arabic edition can reuse it
   under dir="rtl". */
:root{
  --navy-900:#0B1733;--navy-800:#0F1D3D;--navy-700:#152A57;
  --ink:#0F172A;--slate:#475569;--muted:#94A3B8;--bg:#F1F5F9;
  --surface:#FFFFFF;--border:#E2E8F0;--blue:#2563EB;--blue-dark:#1D4ED8;
}
*{box-sizing:border-box;margin-block:0;margin-inline:0;padding-block:0;padding-inline:0}
body{background:var(--surface);color:var(--ink);font-family:Inter,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;line-height:1.66;-webkit-font-smoothing:antialiased}
a{color:var(--blue)}
.wrap{max-inline-size:820px;margin-inline:auto;padding-inline:32px}
@media(max-width:640px){.wrap{padding-inline:16px}}
.display{font-family:Archivo,Inter,sans-serif;font-weight:800;letter-spacing:-.03em;line-height:1.08}
.eyebrow{font-family:"IBM Plex Mono",monospace;font-size:11px;font-weight:500;letter-spacing:.16em;
  text-transform:uppercase;color:var(--blue)}

header{position:sticky;inset-block-start:0;z-index:50;background:rgba(11,23,51,.94);
  backdrop-filter:saturate(1.4) blur(10px);border-block-end:1px solid rgba(255,255,255,.09)}
header .wrap{max-inline-size:1120px}
.bar{display:flex;align-items:center;justify-content:space-between;block-size:66px}
.mark{font-family:Archivo,sans-serif;font-weight:800;font-size:20px;letter-spacing:-.025em;color:#fff;text-decoration:none}
.mark span{color:var(--blue)}
.mark img{display:block;block-size:40px;inline-size:auto}
.bar nav{display:flex;gap:24px;align-items:center}
.bar nav a{font-size:14.5px;font-weight:500;color:#B6C2D6;text-decoration:none}
.bar nav a:hover{color:#fff}
@media(max-width:760px){.bar nav a.hide-sm{display:none}}
.btn{display:inline-block;font-weight:600;font-size:14.5px;padding-block:10px;padding-inline:20px;border-radius:6px;
  text-decoration:none;background:var(--blue);color:#fff!important;border:1px solid var(--blue)}
.btn:hover{background:var(--blue-dark)}

main.guide{padding-block:48px 80px}
.crumbs{font-size:13.5px;color:var(--slate);margin-block-end:22px}
.crumbs a{color:var(--slate)}
.guide h1{font-size:clamp(30px,5vw,46px);margin-block:12px 14px}
.byline{font-size:14px;color:var(--slate);margin-block-end:22px}
.note{background:var(--bg);border-inline-start:3px solid var(--blue);border-radius:6px;
  padding-block:14px;padding-inline:18px;font-size:14.5px;color:var(--slate);margin-block-end:26px}
.guide section{margin-block-start:44px}
.guide h2{font-family:Archivo,sans-serif;font-size:clamp(22px,3.2vw,28px);letter-spacing:-.02em;
  line-height:1.2;margin-block-end:14px}
.guide h3{font-size:17px;font-weight:700;margin-block:22px 8px}
.guide p{margin-block-end:12px}
.guide ul,.guide ol{padding-inline-start:22px;margin-block-end:14px}
.guide li{margin-block-end:6px}
.guide table{inline-size:100%;border-collapse:collapse;font-size:15px;margin-block:8px 6px}
.guide th,.guide td{text-align:start;vertical-align:top;border-block-end:1px solid var(--border);
  padding-block:10px;padding-inline:10px 12px}
.guide th{font-size:12px;font-family:"IBM Plex Mono",monospace;letter-spacing:.06em;text-transform:uppercase;color:var(--slate)}
@media(max-width:640px){.guide table{font-size:14px}.guide th,.guide td{padding-inline:6px}}
details{border:1px solid var(--border);border-radius:8px;padding-block:12px;padding-inline:16px;margin-block-end:10px}
summary{font-weight:600;cursor:pointer}
details p{margin-block:10px 0;color:var(--slate)}

.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;margin-block-start:30px}
.card{display:flex;flex-direction:column;gap:6px;text-decoration:none;color:var(--ink);background:var(--surface);
  border:1px solid var(--border);border-inline-start:3px solid var(--blue);border-radius:8px;padding:18px}
.card:hover{border-color:var(--blue)}
.card strong{font-family:Archivo,sans-serif;font-size:19px}
.card span{font-size:14px;color:var(--slate)}
.card .rg{font-family:"IBM Plex Mono",monospace;font-size:10.5px;letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}

.related{list-style:none;padding:0;margin:14px 0 0;display:grid;gap:10px}
.related li{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:12px 16px}
.related a{font-weight:600}
.related span{color:var(--muted);font-size:13px;margin-inline-start:8px}

footer{background:var(--navy-900);color:#8FA0BC;padding-block:30px;font-size:14px}
footer .wrap{max-inline-size:1120px}
.foot{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
.foot a{color:#B6C2D6;text-decoration:none}
.foot a:hover{color:#fff}