:root{
  --bg:#07111f;--bg2:#0a1729;--panel:#10233c;--panel2:#142b49;--text:#eef6ff;--muted:#a8bad2;--gold:#f0b94d;--gold2:#ffd884;--blue:#63c9ff;--green:#54d69b;--red:#ff7474;--border:rgba(255,255,255,.12);--shadow:0 20px 70px rgba(0,0,0,.35);--radius:22px;--code:#08111f;
}
*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:radial-gradient(circle at top left,rgba(240,185,77,.18),transparent 28%),radial-gradient(circle at top right,rgba(99,201,255,.12),transparent 32%),linear-gradient(135deg,#050913,var(--bg) 55%,#03060c);line-height:1.65}a{color:inherit}.site-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 24px;background:rgba(5,13,24,.88);backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:12px;text-decoration:none}.brand-mark{width:46px;height:46px;border-radius:15px;display:grid;place-items:center;background:linear-gradient(135deg,var(--gold),var(--gold2));color:#241400;font-weight:950;box-shadow:0 8px 24px rgba(240,185,77,.25)}.brand small{display:block;color:var(--muted);font-size:.78rem}.top-nav{display:flex;gap:8px;flex-wrap:wrap}.nav-link{padding:9px 12px;border-radius:12px;text-decoration:none;color:var(--muted);border:1px solid transparent}.nav-link:hover,.nav-link.active{color:var(--gold2);background:rgba(240,185,77,.1);border-color:rgba(240,185,77,.24)}.menu-toggle{display:none}.layout{display:grid;grid-template-columns:290px minmax(0,1fr);gap:22px;max-width:1500px;margin:0 auto;padding:24px}.course-sidebar{position:sticky;top:92px;align-self:start;max-height:calc(100vh - 112px);overflow:auto;background:rgba(10,25,44,.7);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}.course-sidebar h3{margin:18px 0 10px}.lesson-list{display:grid;gap:7px}.lesson-list a{padding:9px 10px;border-radius:12px;color:var(--muted);background:rgba(255,255,255,.04);border:1px solid var(--border);text-decoration:none;font-size:.92rem}.lesson-list a:hover{color:var(--text);background:rgba(255,255,255,.08)}.progress-card{padding:15px;border-radius:18px;background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.03));border:1px solid var(--border)}.progress-card span{color:var(--muted)}.progress-card strong{float:right;color:var(--gold2)}.progress-track{clear:both;height:10px;background:rgba(255,255,255,.08);border-radius:99px;margin-top:12px;overflow:hidden}.progress-fill{height:100%;width:0;background:linear-gradient(90deg,var(--gold),var(--green));transition:.25s}.page-content{min-width:0}.hero,.panel,.card,.lesson-card,.callout,.quiz-card{background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.035));border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.hero{padding:clamp(28px,5vw,58px);margin-bottom:22px;overflow:hidden;position:relative}.hero:after{content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;border-radius:50%;background:rgba(240,185,77,.13);filter:blur(4px)}.eyebrow{color:var(--gold2);text-transform:uppercase;letter-spacing:.13em;font-weight:850;font-size:.75rem;margin:0 0 8px}.hero h1{font-size:clamp(2.4rem,7vw,6rem);line-height:.95;letter-spacing:-.06em;margin:0 0 18px}.hero p,.panel p,.card p,.lesson-card p,.callout p{color:var(--muted)}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.primary,.secondary,.small{border:0;border-radius:14px;padding:12px 16px;font-weight:850;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer}.primary{background:linear-gradient(135deg,var(--gold),var(--gold2));color:#241400}.secondary{background:rgba(255,255,255,.07);color:var(--text);border:1px solid var(--border)}.small{padding:9px 11px;font-size:.9rem}.grid{display:grid;gap:18px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.panel,.card,.lesson-card,.quiz-card{padding:22px;margin-bottom:18px}.panel h2,.card h2,.lesson-card h2{font-size:clamp(1.6rem,3vw,2.5rem);line-height:1.05;margin:0 0 12px}.card h3,.lesson-card h3,.quiz-card h3{margin-top:0;color:var(--gold2)}.muted{color:var(--muted)}.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}.pill{font-size:.8rem;font-weight:800;color:#c6efff;background:rgba(99,201,255,.1);border:1px solid rgba(99,201,255,.22);padding:5px 9px;border-radius:999px}.week-badge{display:inline-grid;place-items:center;border-radius:999px;background:linear-gradient(135deg,var(--gold),var(--gold2));color:#241400;font-weight:950;padding:7px 12px;margin-bottom:12px}.clean-list{padding-left:22px;color:var(--muted)}.clean-list li{margin:7px 0}.callout{padding:18px 20px;background:rgba(240,185,77,.09);border-color:rgba(240,185,77,.25);margin:18px 0}.split{display:grid;grid-template-columns:1fr 1fr;gap:16px}.code-title{margin:14px 0 6px;font-weight:900;color:var(--gold2)}pre{background:var(--code);border:1px solid rgba(255,255,255,.1);border-radius:16px;padding:16px;overflow:auto;box-shadow:inset 0 0 0 1px rgba(255,255,255,.02)}code{font-family:"Cascadia Code","Fira Code",Consolas,monospace;color:#dff4ff;font-size:.92rem}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;min-width:760px}th,td{padding:13px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}th{color:var(--gold2)}td{color:var(--muted)}.quiz-option{display:block;background:rgba(255,255,255,.05);border:1px solid var(--border);border-radius:14px;padding:11px 12px;margin:8px 0;color:var(--muted)}.quiz-option input{margin-right:8px}.feedback{font-weight:900;margin-top:10px}.feedback.good{color:var(--green)}.feedback.bad{color:var(--red)}.lesson-controls{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0}.note-box{width:100%;min-height:160px;border-radius:16px;background:rgba(255,255,255,.06);border:1px solid var(--border);color:var(--text);padding:14px;resize:vertical}.complete-row{display:flex;align-items:center;gap:10px;color:var(--muted);background:rgba(84,214,155,.08);border:1px solid rgba(84,214,155,.18);border-radius:16px;padding:13px 15px}.complete-row input{width:19px;height:19px}.site-footer{text-align:center;color:var(--muted);padding:28px}.search-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}.search-row input,.search-row select{background:rgba(255,255,255,.06);border:1px solid var(--border);border-radius:14px;padding:12px;color:var(--text)}.rubric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.rubric-cell{background:rgba(255,255,255,.05);border:1px solid var(--border);border-radius:14px;padding:14px}.rubric-cell strong{color:var(--gold2)}
@media(max-width:980px){.layout{grid-template-columns:1fr}.course-sidebar{position:static;max-height:none}.grid.two,.grid.three,.split,.rubric-grid{grid-template-columns:1fr}.top-nav{display:none;position:absolute;top:78px;left:16px;right:16px;background:rgba(5,13,24,.97);border:1px solid var(--border);border-radius:18px;padding:12px}.top-nav.open{display:grid}.menu-toggle{display:block;background:rgba(255,255,255,.07);color:var(--text);border:1px solid var(--border);border-radius:12px;padding:9px 12px}.site-header{align-items:flex-start}.hero h1{font-size:3rem}}
@media print{body{background:#fff;color:#111}.site-header,.course-sidebar,.site-footer,.hero-actions,.lesson-controls,.secondary,.primary,.menu-toggle{display:none!important}.layout{display:block;padding:0}.hero,.panel,.card,.lesson-card,.callout,.quiz-card{box-shadow:none;background:#fff;border-color:#ddd;color:#111}.hero p,.panel p,.card p,.lesson-card p,.callout p,.clean-list,td,.muted{color:#333!important}pre{white-space:pre-wrap;background:#f5f5f5;color:#111}code{color:#111}}

.wide{max-width:1400px;margin:auto}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:20px 0}.metric-card,.challenge-card{background:var(--panel,#10233c);border:1px solid rgba(255,255,255,.1);border-radius:18px;padding:22px}.metric-card span{display:block;color:var(--muted,#9fb3ce)}.metric-card strong{display:block;font-size:2.4rem;color:var(--gold,#f0b94d);margin-top:8px}.badge-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px}.achievement{padding:16px;border-radius:16px;border:1px solid rgba(255,255,255,.1);opacity:.42}.achievement.unlocked{opacity:1;background:rgba(240,185,77,.12);border-color:rgba(240,185,77,.35)}.achievement strong{display:block}.dashboard-weeks{display:grid;gap:10px}.dashboard-week{display:flex;justify-content:space-between;gap:15px;padding:12px 14px;border-radius:12px;background:rgba(255,255,255,.05)}.checklist-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:18px 0}.task-check{padding:14px;border:1px solid rgba(255,255,255,.1);border-radius:12px;background:rgba(255,255,255,.04)}.notes-area,.text-input{width:100%;padding:12px;border-radius:12px;border:1px solid rgba(255,255,255,.13);background:rgba(0,0,0,.2);color:inherit;margin:10px 0}.notes-area{min-height:120px}.solution-box{margin-top:12px;padding:14px;border-radius:12px;background:rgba(73,209,156,.12);border:1px solid rgba(73,209,156,.3)}.certificate-page{padding:30px}.certificate-controls{max-width:850px;margin:0 auto 24px}.certificate{max-width:1000px;margin:auto;padding:70px;border:12px double #c89b3c;background:#fffaf0;color:#1e2530;text-align:center;box-shadow:0 20px 70px rgba(0,0,0,.3)}.certificate h1{font-size:3rem}.certificate h2{font-size:2.5rem;border-bottom:1px solid #c89b3c;padding-bottom:12px}.certificate h3{font-size:2rem;color:#7b5613}.certificate-meta{display:flex;justify-content:space-between;margin-top:60px}@media(max-width:800px){.stats-grid{grid-template-columns:repeat(2,1fr)}.checklist-grid{grid-template-columns:1fr}.certificate{padding:30px 18px}.certificate h1{font-size:2rem}}@media print{.no-print{display:none!important}.certificate-page{padding:0}.certificate{box-shadow:none;min-height:90vh}}