:root{
  --navy-900:#0b1220;
  --navy-800:#0f1a2e;
  --navy-700:#13233f;
  --ink:#0f172a;
  --slate-600:#475569;
  --slate-500:#64748b;
  --slate-400:#94a3b8;
  --line:#e5e9f0;
  --bg:#ffffff;
  --bg-soft:#f7f9fc;
  --blue:#2563eb;
  --blue-dark:#1d4ed8;
  --blue-soft:#eef4ff;
  --green:#16a34a;
  --green-soft:#eefbf2;
  --red:#dc2626;
  --red-soft:#fef2f2;
  --radius:12px;
  --radius-lg:16px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.06),0 1px 3px rgba(15,23,42,.04);
  --shadow-md:0 4px 16px rgba(15,23,42,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
.mono{font-family:'JetBrains Mono',monospace}

/* ---------- Nav ---------- */
.nav{background:var(--navy-900);color:#fff;position:sticky;top:0;z-index:50;border-bottom:1px solid rgba(255,255,255,.06)}
.nav-inner{display:flex;align-items:center;gap:32px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px}
.brand .peng{width:30px;height:30px;display:grid;place-items:center;font-size:20px}
.nav-links{display:flex;gap:26px;margin-left:14px}
.nav-links a{color:#cbd5e1;font-size:15px;font-weight:500;transition:color .15s}
.nav-links a:hover{color:#fff}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:18px}
.nav-right .search-box{display:flex;align-items:center;gap:7px;color:#cbd5e1;font-size:14px}
.nav-right .search-box input{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);color:#fff;border-radius:8px;padding:7px 10px;font-family:inherit;font-size:13.5px;width:150px}
.nav-right .search-box input::placeholder{color:#8393a8}
.nav-right .signin{color:#e2e8f0;font-size:15px;font-weight:500}
.user-pill{display:flex;align-items:center;gap:10px;color:#e2e8f0;font-size:14px;background:none;border:none;cursor:pointer;font-family:inherit;padding:6px 4px}
.user-pill .avatar{width:28px;height:28px;border-radius:50%;background:var(--blue);display:grid;place-items:center;font-weight:700;font-size:13px;color:#fff}
.user-pill .chev{color:#8393a8;font-size:12px;transition:transform .15s}
.user-menu{position:relative}
.user-menu-dropdown{display:none;position:absolute;top:calc(100% + 8px);right:0;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 12px 28px rgba(15,23,42,.18);min-width:170px;padding:6px;z-index:50}
.user-menu-dropdown.open{display:block}
.user-menu-dropdown a,.user-menu-dropdown button{display:block;width:100%;text-align:left;padding:9px 12px;border-radius:7px;border:none;background:none;color:var(--slate-700,#1e293b);font-family:inherit;font-size:14px;font-weight:500;cursor:pointer}
.user-menu-dropdown a:hover,.user-menu-dropdown button:hover{background:var(--bg-soft)}
.btn{display:inline-flex;align-items:center;gap:8px;justify-content:center;border:none;cursor:pointer;font-family:inherit;font-weight:600;font-size:15px;padding:10px 18px;border-radius:9px;transition:transform .12s,background .15s,box-shadow .15s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-dark)}
.btn-green{background:var(--green);color:#fff}
.btn-green:hover{background:#128a3e}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.25)}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-danger{background:var(--red);color:#fff}
.btn-danger:hover{background:#b91c1c}
.btn-small{padding:6px 12px;font-size:13px;border-radius:7px}
.btn-outline{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn-outline:hover{background:var(--bg-soft)}
.btn[disabled]{opacity:.6;cursor:not-allowed}

/* ---------- Hero ---------- */
.hero{background:radial-gradient(1200px 500px at 85% -10%,rgba(37,99,235,.35),transparent 60%),radial-gradient(900px 500px at 100% 40%,rgba(124,58,237,.22),transparent 55%),linear-gradient(180deg,var(--navy-900),var(--navy-800));color:#fff;padding:76px 0 64px;border-bottom:1px solid rgba(255,255,255,.05)}
.hero-grid{display:grid;grid-template-columns:1.05fr 1.1fr;gap:56px;align-items:center}
.hero h1{font-size:52px;line-height:1.08;font-weight:800;letter-spacing:-1.5px}
.hero h1 .accent{color:#3b82f6}
.hero p.lead{color:#c3cfe0;font-size:18px;margin:20px 0 30px;max-width:460px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.stats{display:flex;gap:40px;margin-top:40px;flex-wrap:wrap}
.stat .num{font-size:26px;font-weight:800}
.stat .lbl{color:var(--slate-400);font-size:13px;display:flex;align-items:center;gap:6px}

.terminal{background:#0a0e17;border:1px solid rgba(255,255,255,.1);border-radius:12px;box-shadow:0 30px 60px rgba(0,0,0,.45);overflow:hidden}
.term-bar{display:flex;align-items:center;gap:8px;padding:11px 14px;background:#161c28;border-bottom:1px solid rgba(255,255,255,.06)}
.dot{width:12px;height:12px;border-radius:50%}
.dot.r{background:#ff5f57}.dot.y{background:#febc2e}.dot.g{background:#28c840}
.term-title{margin-left:auto;margin-right:auto;color:#8b97a8;font-size:13px}
.term-body{padding:16px 18px;font-size:12.5px;line-height:1.5;color:#c9d4e3}
.green-t{color:#4ade80}.blue-t{color:#60a5fa}.yellow-t{color:#fbbf24}.pink-t{color:#f472b6}
.neo{display:grid;grid-template-columns:auto 1fr;gap:22px;margin-top:6px}
.logo-ascii{color:#e6b422;white-space:pre;font-size:11px;line-height:1.15}
.neo-info div{white-space:nowrap}
.neo-info .k{color:#60a5fa;font-weight:600}
.palette{display:flex;gap:4px;margin-top:12px}
.palette span{width:16px;height:16px;border-radius:3px}
.cursor{display:inline-block;width:8px;height:15px;background:#c9d4e3;vertical-align:middle;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* ---------- Sections ---------- */
section{padding:64px 0}
.section-head{text-align:center;max-width:620px;margin:0 auto 44px}
.section-head h2{font-size:32px;font-weight:800;letter-spacing:-.5px}
.section-head p{color:var(--slate-500);margin-top:10px;font-size:16px}

.why{background:#fff;padding-top:56px;padding-bottom:24px}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:34px}
.why-card .ic{width:44px;height:44px;border-radius:11px;display:grid;place-items:center;font-size:20px;margin-bottom:14px}
.ic.blue{background:var(--blue-soft)}.ic.amber{background:#fff5e6}.ic.violet{background:#f2ecff}.ic.rose{background:#ffeef0}
.why-card h3{font-size:17px;font-weight:700;margin-bottom:6px}
.why-card p{color:var(--slate-500);font-size:14px}

.audience{padding-top:28px}
.aud-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.aud{border-radius:var(--radius-lg);padding:30px 30px 32px;border:1px solid var(--line)}
.aud.students{background:var(--blue-soft);border-color:#dbe6ff}
.aud.pros{background:var(--green-soft);border-color:#d5f0de}
.aud h3{font-size:22px;font-weight:800;display:flex;align-items:center;gap:10px}
.aud.students h3{color:var(--blue-dark)}
.aud.pros h3{color:#15803d}
.aud p.sub{color:var(--slate-600);margin:10px 0 22px;font-size:15px}
.chips{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin-bottom:24px}
.chip{display:flex;flex-direction:column;align-items:center;gap:7px;font-size:11.5px;color:var(--slate-600);text-align:center}
.chip .cic{width:38px;height:38px;border-radius:10px;background:#fff;display:grid;place-items:center;font-size:16px;box-shadow:var(--shadow-sm)}

.paths{background:var(--bg-soft)}
.tabs{display:flex;gap:8px;justify-content:center;margin-bottom:34px}
.tab{padding:8px 20px;border-radius:8px;font-size:14px;font-weight:600;border:1px solid var(--line);background:#fff;color:var(--slate-600);cursor:pointer;transition:.15s}
.tab.active{background:var(--blue);color:#fff;border-color:var(--blue)}
.courses{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.course{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm);transition:transform .15s,box-shadow .15s}
.course:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.course .thumb{width:46px;height:46px;border-radius:10px;display:grid;place-items:center;font-size:22px;margin-bottom:14px}
.th-1{background:#0f172a}.th-2{background:#052e16}.th-3{background:#111827}.th-4{background:#0c4a6e}
.course h4{font-size:15.5px;font-weight:700}
.course .meta{color:var(--slate-500);font-size:12.5px;margin:4px 0 2px}
.course .level{font-size:12px;color:var(--slate-400);margin-bottom:14px}
.bar{height:6px;border-radius:99px;background:#eef1f6;overflow:hidden;margin-bottom:6px}
.bar>i{display:block;height:100%;border-radius:99px;background:var(--blue)}
.course .pct{font-size:12px;color:var(--slate-500);text-align:right;margin-bottom:14px}
.course .start{color:var(--blue);font-weight:600;font-size:14px;display:flex;align-items:center;gap:6px;background:none;border:none;cursor:pointer;font-family:inherit;padding:0}
.view-all{text-align:right;margin-top:22px}
.view-all a{color:var(--blue);font-weight:600;font-size:14px}
.empty-msg{color:var(--slate-500);text-align:center;padding:24px;grid-column:1/-1}

.enterprise{background:linear-gradient(180deg,var(--navy-900),var(--navy-800));color:#fff}
.ent-grid{display:grid;grid-template-columns:.85fr 1.4fr;gap:50px;align-items:center}
.enterprise h2{font-size:30px;font-weight:800;letter-spacing:-.5px;line-height:1.2}
.enterprise p{color:#aebacb;margin:16px 0 24px;font-size:15px}
.ent-icons{display:grid;grid-template-columns:repeat(3,1fr);gap:28px 24px}
.ent-item{text-align:center}
.ent-item .eic{font-size:26px;margin-bottom:10px}
.ent-item h5{font-size:14px;font-weight:700;margin-bottom:4px}
.ent-item p{color:#8ea0b6;font-size:12.5px;margin:0}

.distros-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.distro{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm);transition:transform .15s,box-shadow .15s}
.distro:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.distro .dlogo{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;margin-bottom:12px;font-size:24px}
.distro h4{font-size:15px;font-weight:700}
.distro p{color:var(--slate-500);font-size:12.5px;margin:4px 0 12px}
.distro a{color:var(--blue);font-size:13px;font-weight:600}
.center-link{text-align:center;margin-top:26px}
.center-link a{color:var(--blue);font-weight:600;font-size:14px}

.news{background:var(--bg-soft)}
.news-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.card .img{height:110px;background-size:cover;background-position:center}
.n1{background:linear-gradient(135deg,#1e3a8a,#2563eb)}
.n2{background:linear-gradient(135deg,#0f172a,#334155)}
.n3{background:linear-gradient(135deg,#155e75,#0891b2)}
.n4{background:linear-gradient(135deg,#4c1d95,#7c3aed)}
.n5{background:linear-gradient(135deg,#1e293b,#475569)}
.card .body{padding:14px}
.tag{font-size:10.5px;font-weight:700;letter-spacing:.5px;color:var(--blue)}
.card h4{font-size:14px;font-weight:700;margin:7px 0 8px;line-height:1.35}
.card .date{color:var(--slate-400);font-size:12px}

footer{background:var(--navy-900);color:#cbd5e1}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr;gap:40px;padding:52px 0 44px;border-bottom:1px solid rgba(255,255,255,.08)}
.foot-brand h4{color:#fff;font-size:18px;margin-bottom:6px;display:flex;align-items:center;gap:8px}
.foot-brand p{font-size:14px;max-width:340px;color:var(--slate-400)}
.newsletter{display:flex;gap:10px;margin-top:16px;max-width:420px}
.newsletter input{flex:1;padding:11px 14px;border-radius:8px;border:1px solid rgba(255,255,255,.15);background:rgba(255,255,255,.05);color:#fff;font-family:inherit;font-size:14px}
.newsletter input::placeholder{color:#7c8aa0}
.newsletter-msg{font-size:13px;margin-top:8px;min-height:16px}
.social{display:flex;gap:12px;margin-top:22px}
.social a{width:34px;height:34px;border-radius:8px;background:rgba(255,255,255,.08);display:grid;place-items:center;color:#cbd5e1;transition:.15s}
.social a:hover{background:var(--blue);color:#fff}
.foot-cols{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.foot-cols h6{color:#fff;font-size:13px;text-transform:uppercase;letter-spacing:.5px;margin-bottom:14px}
.foot-cols a{display:block;font-size:13.5px;color:var(--slate-400);margin-bottom:9px;transition:.15s}
.foot-cols a:hover{color:#fff}
.foot-bottom{padding:20px 0;font-size:13px;color:var(--slate-500)}

/* ---------- Auth pages ---------- */
.auth-shell{min-height:calc(100vh - 68px);display:flex;align-items:center;justify-content:center;background:var(--bg-soft);padding:40px 20px}
.auth-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:36px;max-width:400px;width:100%}
.auth-card h1{font-size:24px;font-weight:800;margin-bottom:6px}
.auth-card p.sub{color:var(--slate-500);font-size:14px;margin-bottom:24px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--slate-600)}
.field input,.field select,.field textarea{width:100%;padding:10px 12px;border-radius:8px;border:1px solid var(--line);font-family:inherit;font-size:14px;color:var(--ink)}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--blue-soft);border-color:var(--blue)}
.auth-card .btn{width:100%;margin-top:6px}
.auth-alt{margin-top:18px;text-align:center;font-size:13.5px;color:var(--slate-500)}
.auth-alt a{color:var(--blue);font-weight:600}
.form-msg{font-size:13.5px;border-radius:8px;padding:10px 12px;margin-bottom:16px;display:none}
.form-msg.show{display:block}
.form-msg.error{background:var(--red-soft);color:var(--red)}
.form-msg.success{background:var(--green-soft);color:#15803d}

/* ---------- Admin ---------- */
.admin-shell{display:flex;min-height:calc(100vh - 68px)}
.admin-side{width:220px;background:var(--navy-900);color:#cbd5e1;padding:24px 0;flex-shrink:0}
.admin-side a{display:block;padding:11px 24px;font-size:14.5px;font-weight:500;color:#cbd5e1;border-left:3px solid transparent}
.admin-side a:hover{background:rgba(255,255,255,.05);color:#fff}
.admin-side a.active{color:#fff;border-left-color:var(--blue);background:rgba(37,99,235,.12)}
.admin-main{flex:1;padding:32px 36px;background:var(--bg-soft)}
.admin-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;flex-wrap:wrap;gap:12px}
.admin-head h1{font-size:24px;font-weight:800}
.stat-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-bottom:30px}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-sm)}
.stat-card .n{font-size:26px;font-weight:800}
.stat-card .l{color:var(--slate-500);font-size:13px;margin-top:4px}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden;margin-bottom:24px}
.panel-head{padding:16px 20px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}
.panel-head h3{font-size:16px;font-weight:700}
table{width:100%;border-collapse:collapse}
table th{text-align:left;font-size:12px;text-transform:uppercase;letter-spacing:.4px;color:var(--slate-500);padding:10px 20px;background:var(--bg-soft);border-bottom:1px solid var(--line)}
table td{padding:12px 20px;font-size:14px;border-bottom:1px solid var(--line);vertical-align:middle}
table tr:last-child td{border-bottom:none}
.badge{display:inline-block;padding:3px 9px;border-radius:99px;font-size:11.5px;font-weight:700}
.badge.admin{background:var(--blue-soft);color:var(--blue-dark)}
.badge.user{background:#f1f5f9;color:var(--slate-600)}
.row-actions{display:flex;gap:8px}
.modal-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.5);display:none;align-items:center;justify-content:center;z-index:100;padding:20px}
.modal-backdrop.show{display:flex}
.modal{background:#fff;border-radius:var(--radius-lg);padding:28px;max-width:460px;width:100%;max-height:90vh;overflow:auto}
.modal.wide{max-width:760px}
.modal h3{font-size:18px;font-weight:800;margin-bottom:18px}
.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.toast{position:fixed;bottom:24px;right:24px;background:var(--ink);color:#fff;padding:12px 18px;border-radius:9px;font-size:14px;box-shadow:var(--shadow-md);z-index:200;opacity:0;transform:translateY(10px);transition:.2s}
.toast.show{opacity:1;transform:translateY(0)}
.toast.error{background:var(--red)}
.toast.success{background:var(--green)}

/* ---------- Rich text editor (lesson content) ---------- */
.rte-toolbar{display:flex;flex-wrap:wrap;gap:4px;padding:8px;border:1px solid var(--line);border-bottom:none;border-radius:8px 8px 0 0;background:var(--bg-soft)}
.rte-btn{border:1px solid transparent;background:transparent;border-radius:6px;padding:6px 10px;font-size:13px;font-weight:600;color:var(--slate-600);cursor:pointer;font-family:inherit}
.rte-btn:hover{background:#fff;border-color:var(--line)}
.rte-sep{width:1px;background:var(--line);margin:4px 4px}
.rte-editor{border:1px solid var(--line);border-top:none;border-radius:0 0 8px 8px;padding:14px 16px;min-height:220px;max-height:420px;overflow:auto;font-size:14.5px;line-height:1.7;color:var(--ink)}
.rte-editor:focus{outline:2px solid var(--blue-soft)}

/* Shared "prose" styling for rendered lesson content, in the admin editor and on the public course page */
.prose h2,.prose h3{margin:14px 0 8px;font-weight:700;line-height:1.3}
.prose h2{font-size:19px}
.prose h3{font-size:16.5px}
.prose p{margin:0 0 10px}
.prose ul,.prose ol{margin:0 0 10px;padding-left:22px}
.prose li{margin-bottom:4px}
.prose a{color:var(--blue);text-decoration:underline}
.prose strong{font-weight:700}
.prose code{background:var(--bg-soft);padding:1px 6px;border-radius:4px;font-family:'JetBrains Mono',monospace;font-size:.92em}
.prose:first-child{margin-top:0}
.prose *:last-child{margin-bottom:0}

/* ---------- Course detail ---------- */
.course-hero{background:linear-gradient(180deg,var(--navy-900),var(--navy-800));color:#fff;padding:44px 0}
.breadcrumb{color:#8ea0b6;font-size:13.5px;margin-bottom:16px}
.breadcrumb a{color:#8ea0b6}
.breadcrumb a:hover{color:#fff}
.course-hero-top{display:flex;align-items:center;gap:18px;margin-bottom:14px}
.course-hero-top .thumb{width:56px;height:56px;border-radius:12px;display:grid;place-items:center;font-size:28px;flex-shrink:0}
.course-hero h1{font-size:30px;font-weight:800;letter-spacing:-.5px}
.course-hero p.desc{color:#c3cfe0;font-size:15.5px;margin-top:10px;max-width:640px}
.course-meta-row{display:flex;gap:22px;margin-top:22px;flex-wrap:wrap}
.course-meta-row .m{font-size:13.5px;color:#aebacb}
.course-meta-row .m b{color:#fff;font-weight:700}
.course-body{padding:44px 0 64px}
.lesson-list{max-width:760px;margin:0 auto}
.lesson-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px;overflow:hidden}
.lesson-header{display:flex;align-items:center;gap:14px;padding:16px 18px;cursor:pointer;user-select:none}
.lesson-header .num{width:30px;height:30px;border-radius:50%;background:var(--blue-soft);color:var(--blue-dark);font-weight:700;font-size:13px;display:grid;place-items:center;flex-shrink:0}
.lesson-header h4{font-size:15px;font-weight:700;flex:1}
.lesson-header .chev{color:var(--slate-400);transition:transform .15s;flex-shrink:0}
.lesson-item.open .chev{transform:rotate(180deg)}
.lesson-content{max-height:0;overflow:hidden;transition:max-height .2s ease}
.lesson-item.open .lesson-content{max-height:600px}
.lesson-content-inner{padding:0 18px 18px 62px;color:var(--slate-600);font-size:14.5px;line-height:1.7;max-height:420px;overflow-y:auto}
.course-not-found{text-align:center;padding:60px 20px;color:var(--slate-500)}

/* ---------- 404 ---------- */
.err-shell{min-height:calc(100vh - 68px);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;padding:40px}
.err-shell h1{font-size:64px;font-weight:800;color:var(--navy-900)}
.err-shell p{color:var(--slate-500)}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .hero-grid,.ent-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:40px}
  .why-grid{grid-template-columns:repeat(2,1fr)}
  .courses{grid-template-columns:repeat(2,1fr)}
  .distros-grid{grid-template-columns:repeat(3,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .foot-top{grid-template-columns:1fr}
  .ent-icons{grid-template-columns:repeat(3,1fr)}
  .nav-links{display:none}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .admin-side{width:70px}
  .admin-side a span.label{display:none}
}
@media(max-width:600px){
  .aud-grid,.why-grid,.courses,.news-grid{grid-template-columns:1fr}
  .distros-grid{grid-template-columns:repeat(2,1fr)}
  .chips{grid-template-columns:repeat(3,1fr)}
  .hero h1{font-size:33px}
  .foot-cols{grid-template-columns:repeat(2,1fr)}
  .stats{gap:26px}
  .newsletter{flex-direction:column}
  .nav-right .search-box{display:none}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}