:root{
  --accent:#4f46e5;--accent2:#06b6d4;--success:#22c55e;--danger:#ef4444;--warning:#f59e0b;
  --bg1:#0f172a;--bg2:#1d4ed8;--card:rgba(255,255,255,.14);--text:#fff;--muted:#dbeafe;
  --header-border:rgba(255,255,255,.18);--button-text:#fff;--radius:24px;
}
*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,sans-serif;color:var(--text);background:
 radial-gradient(circle at top left, color-mix(in srgb,var(--accent) 35%, transparent), transparent 30%),
 radial-gradient(circle at top right, color-mix(in srgb,var(--accent2) 30%, transparent), transparent 25%),
 linear-gradient(160deg,var(--bg1),var(--bg2));min-height:100vh}
a{text-decoration:none;color:inherit}.container{max-width:1200px;margin:0 auto;padding:0 20px}.hidden{display:none!important}
.header{position:sticky;top:0;z-index:10;border-bottom:1px solid var(--header-border);backdrop-filter:blur(12px);background:rgba(7,14,32,.55)}
.header-inner{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:14px 0}.brand{display:flex;align-items:center;gap:14px}.logo-box{width:56px;height:56px;border-radius:18px;background:linear-gradient(135deg,var(--accent),var(--accent2));display:flex;align-items:center;justify-content:center;font-weight:800;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.brand img{width:56px;height:56px;object-fit:cover;border-radius:18px;border:1px solid rgba(255,255,255,.2)}
.brand small{display:block;color:var(--muted);opacity:.85}.lang-switch,.seg{display:flex;gap:8px;flex-wrap:wrap}.btn,.option-btn,input[type=color],input,select{border:none;outline:none}.btn{background:linear-gradient(135deg,var(--accent),var(--accent2));color:var(--button-text);padding:12px 18px;border-radius:16px;font-weight:700;cursor:pointer;transition:.2s transform,.2s opacity}.btn:hover{transform:translateY(-1px)}.btn.secondary{background:rgba(255,255,255,.12)}.btn.danger{background:linear-gradient(135deg,#ef4444,#f97316)}.btn.success{background:linear-gradient(135deg,#16a34a,#22c55e)}
.main{padding:26px 0 40px}.card{background:var(--card);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius);box-shadow:0 18px 50px rgba(0,0,0,.22)}
.panel{padding:22px}.hero{max-width:760px;margin:34px auto}.hero .title{text-align:center;font-size:34px;font-weight:800;line-height:1.2}.hero .sub{text-align:center;color:var(--muted);margin-top:10px}.hero .sub2{text-align:center;opacity:.85;margin:12px 0 28px}
.grid{display:grid;gap:18px}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}.stat-pill{padding:16px;border-radius:20px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.14)}
.rule{display:flex;gap:12px;padding:14px;border-radius:18px;background:rgba(255,255,255,.08);margin-bottom:10px}.rule b{color:#bbf7d0}.center{display:flex;justify-content:center;align-items:center}.input{width:100%;padding:14px 16px;border-radius:16px;background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.15)}
.progress{height:12px;border-radius:999px;background:rgba(255,255,255,.12);overflow:hidden}.progress>div{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2))}.question{font-size:28px;font-weight:800;line-height:1.35}.options{display:grid;gap:14px;margin-top:18px}.option-btn{width:100%;text-align:left;padding:18px;border-radius:18px;background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.13);cursor:pointer}.option-btn:hover{background:rgba(255,255,255,.14)}.option-btn.correct{background:rgba(34,197,94,.23);border-color:rgba(34,197,94,.6)}.option-btn.wrong{background:rgba(239,68,68,.22);border-color:rgba(239,68,68,.6)}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}.tab{padding:11px 16px;border-radius:14px;background:rgba(255,255,255,.1);cursor:pointer}.tab.active{background:linear-gradient(135deg,var(--accent),var(--accent2));font-weight:700}
.table{width:100%;border-collapse:collapse}.table th,.table td{padding:12px;border-bottom:1px solid rgba(255,255,255,.12);text-align:left}.section-title{font-size:24px;font-weight:800;margin:0 0 16px}.muted{color:var(--muted)}.badge{display:inline-block;padding:6px 10px;border-radius:999px;background:rgba(255,255,255,.12);font-size:12px}.mt-16{margin-top:16px}.mt-20{margin-top:20px}.mt-24{margin-top:24px}.mb-0{margin-bottom:0}.review-card{padding:16px;border-radius:18px;background:rgba(6,10,28,.25);margin-bottom:14px;border:1px solid rgba(255,255,255,.1)}
.flex{display:flex}.between{justify-content:space-between}.items-center{align-items:center}.gap-12{gap:12px}.gap-16{gap:16px}.wrap{flex-wrap:wrap}.timer{font-size:32px;font-weight:800}.pass{color:#bbf7d0}.fail{color:#fecaca}.notice{padding:12px 14px;border-radius:16px;background:rgba(245,158,11,.15);border:1px solid rgba(245,158,11,.3)}
fieldset{border:1px solid rgba(255,255,255,.14);border-radius:18px;padding:16px}.admin-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}.settings-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.settings-grid label{display:flex;flex-direction:column;gap:8px;font-size:14px}
input[type=color]{width:100%;height:48px;border-radius:12px;background:transparent}input[type=file]{width:100%;padding:12px;border-radius:14px;background:rgba(255,255,255,.08);color:#fff;border:1px dashed rgba(255,255,255,.18)}
@media (max-width:900px){.grid-3,.grid-2,.admin-grid,.settings-grid{grid-template-columns:1fr}.header-inner,.between{flex-direction:column;align-items:flex-start}.question{font-size:22px}}