:root{--bg:#0b1220;--panel:#121d30;--panel2:#18263c;--text:#edf3fc;--muted:#a8b6ca;--line:#2a3a52;--accent:#66d9c2;--accent2:#8db7ff;--warn:#ffd27a;--danger:#ff9a9a}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif}.topbar{height:70px;display:flex;align-items:center;justify-content:space-between;padding:0 22px;border-bottom:1px solid var(--line);background:#0e1828;position:sticky;top:0;z-index:5}.brand{display:flex;align-items:center;gap:12px}.brand b{display:block;letter-spacing:1.2px}.brand small{display:block;color:var(--muted);font-size:11px}.logo{width:40px;height:40px;border-radius:12px;background:var(--accent);color:#09201c;display:grid;place-items:center;font-weight:900}.layout{display:grid;grid-template-columns:230px minmax(0,1fr);min-height:calc(100vh - 112px)}.sidebar{padding:18px 12px;border-right:1px solid var(--line);background:#0e1828}.nav{width:100%;border:0;background:transparent;color:var(--muted);text-align:left;padding:12px;border-radius:10px;margin:3px 0;cursor:pointer;font:inherit}.nav:hover,.nav.active{background:var(--panel2);color:var(--text)}.side-note{margin:35px 10px 0;padding-top:15px;border-top:1px solid var(--line);font-size:12px}.side-note small{color:var(--muted)}.content{padding:28px;max-width:1200px;width:100%;margin:auto}.hero{padding:28px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(130deg,#182c43,#132036);margin-bottom:20px}.eyebrow{color:var(--accent);font-size:11px;font-weight:800;letter-spacing:1.5px;text-transform:uppercase}.hero h1{font-size:clamp(25px,4vw,38px);margin:8px 0}.muted,small{color:var(--muted)}h1{font-size:30px;line-height:1.2;margin:5px 0 12px}h2{font-size:21px;margin:0 0 10px}h3{font-size:17px}.section-title{margin:26px 0 12px}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.card{background:var(--panel);border:1px solid var(--line);border-radius:15px;padding:18px;margin:12px 0}.stat{font-size:30px;font-weight:800;color:var(--accent)}.stat-label{font-size:12px;color:var(--muted)}.progress{height:8px;border-radius:20px;background:#26364d;overflow:hidden;margin-top:12px}.progress span{display:block;height:100%;background:var(--accent)}.row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.tag,.pill{display:inline-block;border:1px solid var(--line);border-radius:30px;padding:4px 10px;color:var(--muted);font-size:12px}.btn,.ghost{display:inline-block;border:0;border-radius:9px;padding:10px 15px;background:var(--accent);color:#08211c;font-weight:750;cursor:pointer;font:inherit}.btn.secondary,.ghost{background:#263a55;color:var(--text);border:1px solid #3b5272}.btn.small{padding:7px 11px;font-size:13px}.btn:disabled{opacity:.5;cursor:not-allowed}.phase{padding:18px}.topic{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 0;border-top:1px solid var(--line)}.topic:first-of-type{margin-top:8px}.topic .muted{font-size:12px}.lesson-block{margin:16px 0}.lesson-block h3{margin:0 0 8px;color:var(--accent2)}pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#09111e;border:1px solid var(--line);border-radius:10px;padding:15px;color:#d9e8ff;font:13px/1.6 ui-monospace,Consolas,monospace}code{color:#bce6ff}.q{padding:15px 0;border-bottom:1px solid var(--line)}.q:last-child{border:0}.option{display:flex;gap:9px;padding:6px 0;color:#d9e4f2}.option input{accent-color:var(--accent)}label{display:block;margin:10px 0 5px;color:var(--muted)}input,textarea,select{width:100%;background:#0b1525;border:1px solid #344761;border-radius:9px;padding:11px;color:var(--text);font:inherit}textarea{min-height:95px;resize:vertical}.feedback{border-left:3px solid var(--accent);padding:10px 13px;background:#102b2b;border-radius:7px;margin:10px 0}.feedback.wrong{border-color:var(--danger);background:#2b1c27}.empty{color:var(--muted);text-align:center;padding:25px}.hidden{display:none!important}.actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:14px}.checkline{display:flex;align-items:center;gap:9px}.checkline input{width:auto}details{margin-top:10px}summary{cursor:pointer;color:var(--accent2)}footer{padding:15px 25px;border-top:1px solid var(--line);color:var(--muted);font-size:12px;display:flex;justify-content:space-between}.notice{border:1px solid #66542c;background:#2b261a;color:#ffe3a3;padding:12px;border-radius:10px;margin:12px 0}.success{color:var(--accent)}.danger{color:var(--danger)}.topic-actions{display:flex;gap:8px;flex-wrap:wrap}@media(max-width:850px){.layout{grid-template-columns:1fr}.sidebar{display:flex;overflow:auto;gap:5px;padding:8px;border-right:0;border-bottom:1px solid var(--line);position:sticky;top:70px;z-index:4}.nav{white-space:nowrap;width:auto;padding:9px 11px;font-size:13px}.side-note{display:none}.content{padding:18px}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:520px){.topbar{padding:0 12px}.content{padding:13px}.grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.card{padding:14px}.topic{align-items:flex-start;flex-direction:column}.topic .btn{width:100%}.hero{padding:19px}h1{font-size:25px}}
.top-actions{display:flex;align-items:center;gap:10px}.locked{opacity:.88}.phase-exam{padding-top:14px;border-top:1px solid var(--line);margin-top:12px}.timer{font:800 26px/1.2 ui-monospace,Consolas,monospace;color:var(--warn);background:#33291a;border:1px solid #66542c;padding:10px 16px;border-radius:12px;min-width:110px;text-align:center}.code-editor{min-height:260px;font:14px/1.6 ui-monospace,Consolas,monospace;tab-size:4}.certificate{text-align:center;padding:35px;background:linear-gradient(135deg,#182c43,#132036);border:2px solid #b99a48}.certificate h1{color:#e5c76c}.certificate h2{font-size:27px}.certificate .stat{font-size:46px}.top-actions .pill{white-space:nowrap}@media(max-width:850px){.top-actions{gap:5px}.top-actions .pill{font-size:10px;padding:3px 6px}.sidebar{flex-wrap:nowrap}.nav{flex:0 0 auto}}@media(max-width:520px){.topbar{height:auto;min-height:64px;gap:8px}.top-actions{flex-direction:column;align-items:flex-end}.top-actions .pill{max-width:150px;overflow:hidden;text-overflow:ellipsis}.timer{font-size:21px}}

.topic .success,.topic .danger{font-weight:800}.result-topic{display:flex;justify-content:space-between;gap:12px}

.conflict-card{border-color:#8a6630;background:#2a241a}.conflict-card .btn{margin:3px 0}.conflict-card small{display:block;margin-top:12px;line-height:1.6}#cloudConfigForm textarea{font-family:ui-monospace,Consolas,monospace;font-size:12px}