:root{color-scheme:light;
  --paper:#F4F6F8;--sheet:#fff;--ink:#101820;--ink2:#333F4B;--mut:#5F6E7B;
  --rule:#D8DFE5;--acc:#0B5C96;--accs:#E6F0F7}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);
  font:400 16px/1.8 "IBM Plex Sans Arabic","Segoe UI",system-ui,sans-serif}
img{max-width:100%;height:auto;display:block}
a{color:var(--acc)}
a:focus-visible{outline:2px solid var(--acc);outline-offset:3px}
.mono{font-family:"IBM Plex Mono",monospace;font-size:.9em}
header{max-width:60rem;margin:0 auto;padding:2.6rem 1.25rem 1.6rem;text-align:center}
header img{width:110px;height:90px;object-fit:contain;margin:0 auto 1.2rem;mix-blend-mode:multiply}
h1{font-size:clamp(1.55rem,5vw,2.2rem);line-height:1.3;margin:0 0 .8rem;
  letter-spacing:-.025em;font-weight:700;text-wrap:balance}
header p{max-width:52ch;margin:0 auto;color:var(--ink2)}
.cards{max-width:60rem;margin:1.6rem auto 0;padding:0 1.25rem;display:grid;gap:1.1rem}
@media(min-width:52rem){.cards{grid-template-columns:repeat(3,1fr)}}
.c{background:var(--sheet);border:1px solid var(--rule);border-radius:6px;
  padding:1.5rem 1.4rem 1.3rem;text-decoration:none;color:inherit;display:flex;
  flex-direction:column;gap:.55rem;border-top:4px solid var(--acc)}
.c:hover{border-color:var(--acc);box-shadow:0 6px 22px -14px rgba(16,24,32,.45)}
.cb{border-top-color:#1C7A6B}.cc{border-top-color:#8A5A2B}
.k{font-family:"IBM Plex Mono",monospace;font-size:.72rem;letter-spacing:.14em;color:var(--mut)}
.c h2{margin:0;font-size:1.28rem;font-weight:700;letter-spacing:-.01em}
.c p{margin:0;font-size:.93rem;color:var(--ink2);line-height:1.7;flex:1}
.go{font-weight:600;color:var(--acc);font-size:.9rem;margin-top:.5rem;
  min-height:44px;display:flex;align-items:center}
.notes{max-width:60rem;margin:2.6rem auto 0;padding:0 1.25rem}
.notes h3{font-size:.8rem;letter-spacing:.06em;color:var(--mut);margin:0 0 .7rem;
  padding-bottom:.4rem;border-bottom:1px solid var(--rule)}
.notes ul{margin:0;padding-inline-start:1.1rem;display:grid;gap:.6rem}
.notes li{font-size:.92rem;line-height:1.75;color:var(--ink2);max-width:70ch}
.notes li::marker{color:var(--acc)}
footer{max-width:60rem;margin:2.6rem auto 0;padding:1.2rem 1.25rem 3rem;
  border-top:1px solid var(--rule)}
footer p{font-size:.83rem;color:var(--mut);margin:0}