:root{--bg:#05070d;--panel:#0a1020;--panel2:#0e172a;--text:#e8fbff;--muted:#9bb8c5;--cyan:#4ef2ff;--green:#00f5a0;--gold:#ffd36a;--violet:#a78bfa;--line:rgba(78,242,255,.22);--danger:#ff6b6b}*{box-sizing:border-box}body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;background:radial-gradient(circle at top left,rgba(78,242,255,.18),transparent 32%),linear-gradient(135deg,#05070d,#08111f 55%,#02040a);color:var(--text);min-height:100vh}a{color:var(--cyan);text-decoration:none}h1,h2,h3,h4{color:var(--cyan);text-shadow:0 0 18px rgba(78,242,255,.25);letter-spacing:.01em}h2{color:var(--green)}h3{color:var(--gold)}.site-header{min-height:82px;display:flex;align-items:center;justify-content:space-between;padding:16px 42px;border-bottom:1px solid var(--line);background:rgba(5,7,13,.9);backdrop-filter:blur(12px);position:sticky;top:0;z-index:10}.brand{display:flex;align-items:center;gap:14px;font-weight:900;letter-spacing:.08em;text-transform:uppercase;color:var(--text)}.brand img{width:44px;height:44px;object-fit:contain;filter:drop-shadow(0 0 10px var(--cyan))}.topnav{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.topnav a{color:var(--text);font-weight:700;font-size:.92rem}.topnav a:hover{color:var(--cyan)}.nav-cta,.button,button{display:inline-block;border:0;border-radius:999px;background:linear-gradient(90deg,var(--cyan),var(--green));color:#001115!important;font-weight:900;padding:12px 18px;box-shadow:0 0 24px rgba(78,242,255,.24);cursor:pointer}.button.secondary{background:transparent;color:var(--cyan)!important;border:1px solid var(--line)}.hero,.page-center{min-height:calc(100vh - 150px);display:flex;align-items:center;justify-content:center;padding:48px 20px}.page-wrap{width:min(1180px,100%);margin:0 auto;padding:42px 20px}.panel,.auth-card{width:min(100%,980px);background:linear-gradient(180deg,rgba(14,23,42,.95),rgba(7,11,20,.96));border:1px solid var(--line);border-radius:28px;box-shadow:0 24px 80px rgba(0,0,0,.42), inset 0 0 0 1px rgba(255,255,255,.03);padding:38px}.panel h1,.auth-card h1{margin:0 0 12px;font-size:clamp(2rem,5vw,4.2rem);line-height:1}.panel p,.auth-card p,.muted{color:var(--muted);font-size:1.02rem;line-height:1.7}.auth-page{display:grid;place-items:center;padding:24px}.auth-card{max-width:460px;text-align:center}.auth-logo{width:72px;height:72px;object-fit:contain;margin:0 auto 18px;display:block;filter:drop-shadow(0 0 16px var(--cyan))}.auth-card h1{font-size:2rem}.form-stack{display:grid;gap:14px;margin-top:22px}input,select,textarea{width:100%;padding:14px 16px;border-radius:14px;border:1px solid var(--line);background:#060b15;color:var(--text);outline:none}input:focus,textarea:focus,select:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(78,242,255,.11)}.error{border:1px solid rgba(255,107,107,.45);background:rgba(255,107,107,.1);color:#ffd3d3;border-radius:14px;padding:12px;margin:12px 0}.success{border:1px solid rgba(0,245,160,.45);background:rgba(0,245,160,.1);color:#caffef;border-radius:14px;padding:12px;margin:12px 0}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;margin-top:28px}.tile,.course-card{display:block;padding:22px;border-radius:20px;background:rgba(78,242,255,.07);border:1px solid var(--line);color:var(--text);font-weight:800;min-height:120px}.tile:hover,.course-card:hover{border-color:rgba(0,245,160,.55);transform:translateY(-1px)}.tile span,.course-card span{display:block;color:var(--muted);font-weight:500;margin-top:8px}.badge{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:rgba(0,245,160,.08);color:var(--green);padding:6px 10px;border-radius:999px;font-weight:900;font-size:.82rem}.site-footer{display:flex;justify-content:center;gap:18px;flex-wrap:wrap;padding:28px;border-top:1px solid var(--line);color:var(--muted)}.table{width:100%;border-collapse:collapse;margin-top:18px}.table th,.table td{border-bottom:1px solid var(--line);padding:12px;text-align:left;vertical-align:top}.table th{color:var(--green)}.split{display:grid;grid-template-columns:1fr 1fr;gap:20px}.actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}.notice{padding:16px;border-radius:18px;border:1px solid var(--line);background:rgba(255,211,106,.08);color:#fff2c7}.video-room{aspect-ratio:16/9;border-radius:22px;border:1px solid var(--line);display:grid;place-items:center;background:radial-gradient(circle,rgba(78,242,255,.12),rgba(0,0,0,.3));margin-top:18px;text-align:center;padding:24px}.progress{height:12px;background:#07101d;border:1px solid var(--line);border-radius:99px;overflow:hidden}.progress > i{display:block;height:100%;background:linear-gradient(90deg,var(--cyan),var(--green));width:var(--w,0%)}@media(max-width:760px){.site-header{height:auto;padding:18px;align-items:flex-start;gap:16px;flex-direction:column}.topnav{gap:12px}.panel{padding:26px}.split{grid-template-columns:1fr}.auth-logo{width:64px;height:64px}}