:root{
  --navy:#0a3264;--navy2:#104e89;--blue:#1768ad;--green:#18804f;--gold:#b67b16;
  --ink:#1f2b37;--muted:#6d7f90;--line:#d8e3ee;--bg:#f4f7fa;--white:#fff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Segoe UI",Tahoma,Arial,sans-serif}
a{text-decoration:none;color:inherit}
.topbar{height:92px;background:linear-gradient(90deg,#082a55,#0f4d88);color:#fff;position:sticky;top:0;z-index:50;box-shadow:0 3px 14px rgba(0,0,0,.14)}
.topbar-inner{max-width:1480px;height:100%;margin:auto;padding:7px 22px;position:relative;display:flex;align-items:center;justify-content:flex-start}
.brand{display:flex;align-items:center;justify-content:center;height:78px;min-width:250px;padding:4px 18px;border-radius:14px;transition:.2s;background:#fff}
.brand:hover{box-shadow:0 0 0 2px #ffffff38}
.brand img{display:block;width:218px;height:68px;object-fit:contain;object-position:center}
.home-link{position:absolute;right:22px;top:50%;transform:translateY(-50%);display:inline-flex;align-items:center;gap:9px;font-weight:800;color:#fff;padding:7px 4px 7px 10px}
.home-link:after{content:"";position:absolute;right:0;left:0;bottom:0;height:2px;background:#57d0c5;transform:scaleX(0);transform-origin:right;transition:.18s}
.home-link:hover:after{transform:scaleX(1)}
.home-icon{width:34px;height:34px;border-radius:9px;border:1px solid #ffffff55;background:#ffffff10;display:grid;place-items:center}
.home-icon svg{width:20px;height:20px}
.shell{max-width:1480px;margin:auto;padding:22px;display:grid;grid-template-columns:300px minmax(0,1fr);gap:22px;align-items:start}
.sidebar{background:#fff;border:1px solid var(--line);border-radius:17px;overflow:hidden;position:sticky;top:114px;box-shadow:0 4px 16px rgba(10,45,80,.05)}
.side-head{background:#fff;color:var(--navy);padding:18px;display:flex;align-items:center;gap:11px;border-bottom:1px solid var(--line)}
.side-head-icon{width:39px;height:39px;border-radius:10px;background:#edf5fb;color:var(--blue);display:grid;place-items:center;font-size:21px}
.side-head strong{font-size:21px}
.course-list{padding:12px}
.course-link{display:grid;grid-template-columns:42px 1fr;gap:10px;align-items:center;padding:12px;border-radius:11px;border:1px solid #dce6ef;font-weight:800;color:var(--navy);background:#fff;transition:.18s}
.course-link:hover,.course-link.active{background:linear-gradient(90deg,#0c5bae,#0a3f80);color:#fff;border-color:#0c5bae;box-shadow:0 5px 14px #0a326421}
.course-icon{width:38px;height:38px;border-radius:9px;background:#edf5fb;color:var(--blue);display:grid;place-items:center}.course-link.active .course-icon{background:#ffffff1a;color:#fff}
main{min-width:0}
.hero{min-height:330px;background:linear-gradient(135deg,#fff 0%,#eef6fb 100%);border:1px solid var(--line);border-radius:22px;padding:34px 38px;display:grid;grid-template-columns:1.15fr .85fr;gap:20px;align-items:center;box-shadow:0 6px 20px rgba(10,45,80,.05);overflow:hidden}
.hero h1{color:var(--navy);font-size:42px;margin:0 0 12px;line-height:1.25}.hero p{font-size:18px;color:var(--muted);line-height:1.95;margin:0;max-width:720px}
.visual{display:grid;place-items:center;min-height:245px;position:relative}.visual:before{content:"";position:absolute;width:245px;height:245px;border-radius:50%;background:linear-gradient(145deg,#e8f5f4,#eaf2fa)}
.monitor{position:relative;width:235px;height:156px;border:9px solid #0a3264;border-radius:17px;background:#fff;box-shadow:0 15px 25px #0a326421}.monitor:after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:-48px;width:96px;height:12px;background:#0a3264;border-radius:12px}.monitor:before{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:-40px;width:18px;height:38px;background:#0a3264}

.section-title{margin:27px 0 12px;display:flex;align-items:center;gap:13px;color:var(--navy);font-size:25px;font-weight:900}.section-title:after{content:"";height:2px;background:#dbe6ef;flex:1}
.course-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;display:grid;grid-template-columns:86px 1fr auto;gap:18px;align-items:center;box-shadow:0 4px 14px rgba(10,45,80,.04)}
.bigicon{width:82px;height:82px;border-radius:19px;background:#edf5fb;color:var(--blue);display:grid;place-items:center}.course-card h2{margin:0;color:var(--navy);font-size:27px}.course-card p{margin:6px 0 0;color:var(--muted);line-height:1.8}.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.tag{padding:5px 10px;border:1px solid #cdddeb;border-radius:999px;background:#f7fafc;color:var(--navy);font-size:13px;font-weight:800}.openbtn{background:var(--navy);color:#fff;padding:11px 17px;border-radius:10px;font-weight:900;white-space:nowrap}.openbtn:hover{background:var(--navy2)}
.footer{margin-top:28px;padding:21px 8px 7px;color:#6c7e8e;font-size:13px;text-align:center;display:flex;justify-content:center;gap:18px;flex-wrap:wrap;border-top:1px solid #dfe7ee}
.algo-icon{width:58px;height:58px;display:block}.course-icon .algo-icon{width:27px;height:27px}.bigicon .algo-icon{width:56px;height:56px}
@media(max-width:980px){.home-link{right:14px}.home-link span:last-child{display:none}.brand img{width:185px}.shell{grid-template-columns:1fr}.sidebar{position:static}.hero{grid-template-columns:1fr}.visual{display:none}.course-card{grid-template-columns:72px 1fr}.openbtn{grid-column:1/-1;text-align:center}}
@media(max-width:600px){.topbar{height:80px}.brand{height:66px;min-width:205px;padding:3px 10px}.brand img{width:172px;height:56px}.home-icon{width:32px;height:32px}.shell{padding:12px}.hero{padding:24px}.hero h1{font-size:33px}.hero p{font-size:16px}.course-card{grid-template-columns:1fr;text-align:center}.bigicon{margin:auto}.tags{justify-content:center}}

.monitor-logo{height:100%;display:flex;align-items:center;justify-content:center;padding:9px;background:#fff;border-radius:7px;overflow:hidden}
.monitor-logo img{display:block;max-width:100%;max-height:100%;object-fit:contain}

/* S2 GATE identity refinements */
.home-icon{border-radius:10px;background:#ffffff0d}
.home-icon svg{width:19px;height:19px}
.footer{margin-top:30px;padding:18px 8px 7px;background:transparent;color:#6c7e8e;border-top:1px solid #dfe7ee;border-radius:0;font-size:13px;box-shadow:none}


/* v60 — ضبط صورة شعار الصفحة الرئيسية على الشاشات الصغيرة */
@media (max-width:980px){
  .hero{grid-template-columns:1fr!important}
  .visual{display:grid!important;min-height:205px!important;margin-top:6px!important}
  .visual:before{width:190px!important;height:190px!important}
  .monitor{width:210px!important;height:140px!important;border-width:8px!important}
  .monitor-logo{width:100%!important;height:100%!important;padding:10px!important;overflow:hidden!important}
  .monitor-logo img{width:auto!important;height:auto!important;max-width:100%!important;max-height:100%!important;object-fit:contain!important;object-position:center!important}
}
@media (max-width:600px){
  .hero{padding:22px 18px!important;gap:10px!important}
  .visual{min-height:185px!important}
  .visual:before{width:165px!important;height:165px!important}
  .monitor{width:185px!important;height:123px!important;border-width:7px!important}
  .monitor:after{bottom:-38px!important;width:80px!important;height:10px!important}
  .monitor:before{bottom:-32px!important;width:16px!important;height:31px!important}
  .monitor-logo{padding:8px!important}
}