:root{--bg:#080b16;--panel:#101729;--panel2:#151f35;--text:#eaf0ff;--muted:#98a6c3;--line:#ffffff1f;--green:#2ee58a;--red:#ff3b57;--blue:#5dd6ff;--yellow:#ffd166;--purple:#9b7cff;--orange:#ff9f1c}*{box-sizing:border-box}body{color:var(--text);background:radial-gradient(circle at 20% 10%,#17305f 0,#080b16 35%,#050712 100%);margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit}button,input,select{font:inherit}.shell{min-height:100vh}.nav{z-index:10;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);background:#080b16d1;justify-content:space-between;align-items:center;padding:18px 7vw;display:flex;position:sticky;top:0}.brand{letter-spacing:.4px;align-items:center;gap:12px;font-weight:900;display:flex}.logoDog{color:#111827;background:linear-gradient(135deg,#fff,#d9edff);border-radius:16px;place-items:center;width:46px;height:46px;font-size:28px;display:grid;box-shadow:0 0 0 3px #5dd6ff24}.brand small{color:var(--muted);font-size:12px;font-weight:650;display:block}.navLinks{align-items:center;gap:12px;display:flex}.navLinks button,.navLinks a,.btn{border:1px solid var(--line);color:var(--text);cursor:pointer;background:#ffffff0f;border-radius:999px;padding:10px 16px;text-decoration:none}.btnPrimary{background:linear-gradient(135deg,var(--green),#19c37d);color:#001b10;border:0;font-weight:900}.btnRed{color:#fff;background:linear-gradient(135deg,#ff3b57,#ff7a59);border:0;font-weight:900}.btnBlue{background:linear-gradient(135deg,var(--blue),#7c5cff);color:#061225;border:0;font-weight:900}.container{width:min(1180px,92vw);margin:0 auto}.hero{grid-template-columns:1.1fr .9fr;align-items:center;gap:34px;padding:74px 0 44px;display:grid}.kicker{color:var(--green);text-transform:uppercase;letter-spacing:.14em;font-size:13px;font-weight:900}h1{letter-spacing:-.06em;margin:14px 0 20px;font-size:clamp(40px,6vw,76px);line-height:.94}h2{letter-spacing:-.04em;margin:0 0 18px;font-size:clamp(28px,4vw,46px)}h3{margin:0 0 12px}p{color:var(--muted);line-height:1.65}.heroActions{flex-wrap:wrap;gap:12px;margin-top:24px;display:flex}.stats{grid-template-columns:repeat(4,1fr);gap:14px;margin:30px 0;display:grid}.stat{border:1px solid var(--line);background:#ffffff0f;border-radius:22px;padding:16px}.stat strong{font-size:24px;display:block}.terminal{background:linear-gradient(#141f36f2,#090d19f2);border:1px solid #5dd6ff38;border-radius:30px;overflow:hidden;box-shadow:0 30px 90px #00000059}.terminalTop{border-bottom:1px solid var(--line);background:#ffffff0a;gap:8px;padding:18px;display:flex}.dot{border-radius:50%;width:12px;height:12px}.dot.red{background:#ff5f56}.dot.yellow{background:#ffbd2e}.dot.green{background:#27c93f}.code{color:#dfffe9;padding:26px;font-family:ui-monospace,Consolas,monospace;font-size:15px}.code span{color:#5dd6ff}.panel{border:1px solid var(--line);background:linear-gradient(#151f35eb,#0c1221eb);border-radius:30px;padding:26px;box-shadow:0 24px 70px #00000038}.grid3{grid-template-columns:repeat(3,1fr);gap:18px;display:grid}.grid2{grid-template-columns:repeat(2,1fr);gap:18px;display:grid}.card{border:1px solid var(--line);background:#ffffff0f;border-radius:24px;padding:22px}.chips{flex-wrap:wrap;gap:10px;display:flex}.chip{color:#ccefff;background:#5dd6ff14;border:1px solid #5dd6ff40;border-radius:999px;padding:8px 12px;font-size:13px;font-weight:800}.authBox{border:1px solid var(--line);background:#ffffff12;border-radius:30px;max-width:560px;margin:34px auto;padding:28px}.input{border:1px solid var(--line);width:100%;color:var(--text);background:#0b1020;border-radius:16px;outline:none;margin:8px 0 12px;padding:14px 16px}.levelMap{flex-wrap:wrap;justify-content:center;align-items:center;gap:18px;margin:22px 0;display:flex}.levelNode{border:1px solid var(--line);width:70px;height:70px;color:var(--text);cursor:pointer;background:#121b31;border-radius:28px;place-items:center;font-weight:950;display:grid;position:relative}.levelNode.active{background:linear-gradient(135deg,var(--blue),var(--green));color:#03151c;box-shadow:0 0 0 6px #5dd6ff1f}.levelNode.locked{opacity:.45;cursor:not-allowed}.levelNode.done{color:#03140b;background:linear-gradient(135deg,#203a2e,#2ee58a)}.lessonLayout{grid-template-columns:.85fr 1.15fr;align-items:start;gap:20px;display:grid}.lessonStep{border-left:4px solid var(--blue);background:#5dd6ff0f;border-radius:18px;margin:12px 0;padding:14px 16px}.quizCard{border:1px solid var(--line);background:#ffffff0e;border-radius:24px;margin-bottom:16px;padding:20px}.options{gap:10px;margin-top:12px;display:grid}.option{border:1px solid var(--line);text-align:left;color:var(--text);cursor:pointer;background:#0e1528;border-radius:18px;padding:14px}.option.correct{background:#2ee58a26;border-color:#2ee58acc}.option.wrong{background:#ff3b5724;border-color:#ff3b57cc}.feedback{background:#ffffff12;border-radius:16px;margin-top:10px;padding:12px}.priceBox{background:linear-gradient(#ff3b5721,#ffffff0e);border:2px solid #ff3b5799;border-radius:30px;padding:26px}.discount{background:var(--red);color:#fff;border-radius:999px;margin-bottom:10px;padding:8px 12px;font-weight:950;display:inline-block}.old{color:#b8c0d6;font-size:24px;text-decoration:line-through}.new{color:#ff526a;letter-spacing:-.06em;font-size:54px;font-weight:1000}.adminTable{border-collapse:collapse;width:100%}.adminTable th,.adminTable td{border-bottom:1px solid var(--line);text-align:left;padding:12px}.notice{color:#ffe4a8;background:#ffd1661f;border:1px solid #ffd1664d;border-radius:18px;padding:14px}.good{color:var(--green)}.bad{color:var(--red)}.footer{border-top:1px solid var(--line);color:var(--muted);flex-wrap:wrap;justify-content:space-between;gap:16px;padding:34px 7vw;display:flex}.footer a{color:var(--muted);margin-left:12px}@media (max-width:860px){.hero,.lessonLayout,.grid3,.grid2{grid-template-columns:1fr}.stats{grid-template-columns:repeat(2,1fr)}.nav{flex-direction:column;align-items:flex-start;gap:12px}.navLinks{flex-wrap:wrap}h1{font-size:44px}}