:root{--bg:#07111f;--card:#101d31;--muted:#9fb0c7;--text:#f4f7fb;--accent:#f4b942;--line:#26384f;--good:#83e6a0;--warn:#ffd166}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Arial,sans-serif;background:linear-gradient(180deg,#07111f,#0b1728 45%,#07111f);color:var(--text);padding-bottom:86px}.topbar{position:sticky;top:0;z-index:5;display:flex;justify-content:space-between;align-items:center;padding:16px 18px;background:rgba(7,17,31,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}h1{font-size:20px;margin:0}h2{font-size:28px;margin:10px 0 16px}h3{margin:0 0 10px}.eyebrow{margin:0 0 4px;color:var(--accent);font-size:12px;text-transform:uppercase;letter-spacing:.12em}main{max-width:1050px;margin:auto;padding:18px}.page{display:none}.page.active{display:block}.card{background:rgba(16,29,49,.96);border:1px solid var(--line);border-radius:18px;padding:18px;margin:14px 0;box-shadow:0 12px 30px rgba(0,0,0,.18)}.hero{background:radial-gradient(circle at top right,rgba(244,185,66,.18),transparent 35%),var(--card)}.hero p,.card p,li{color:#d5dfec;line-height:1.6}.grid{display:grid;gap:14px}.two{grid-template-columns:repeat(2,minmax(0,1fr))}.three{grid-template-columns:repeat(3,minmax(0,1fr))}.stat{text-align:center}.stat span{font-size:34px;color:var(--accent);font-weight:800}.warning{border-color:rgba(255,209,102,.45)}button{border:0;background:var(--accent);color:#07111f;font-weight:800;padding:11px 15px;border-radius:12px;margin:4px;cursor:pointer}.secondary{background:#dce8f7}.ghost{background:transparent;color:var(--text);border:1px solid var(--line)}.hidden{display:none}.bottom-nav{position:fixed;bottom:0;left:0;right:0;display:flex;justify-content:center;gap:4px;padding:10px;background:rgba(7,17,31,.97);border-top:1px solid var(--line);overflow:auto}.bottom-nav button{background:#13233a;color:#fff;border:1px solid var(--line);min-width:70px}.list{display:grid;gap:12px}.lesson-card{cursor:pointer}.lesson-card:hover{border-color:var(--accent)}.pill,.chip{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:5px 10px;margin:3px;color:#dce8f7;font-size:12px}.chip{cursor:pointer;background:#13233a}.chip.active{background:var(--accent);color:#07111f;font-weight:800}.chips{margin:8px 0 16px}.form-card label{display:block;margin-top:12px;color:var(--muted);font-size:13px}input,textarea,select{width:100%;margin-top:6px;padding:12px;border-radius:12px;border:1px solid var(--line);background:#0b1728;color:var(--text)}textarea{min-height:100px}.search{margin-bottom:14px}.result{margin-top:14px;padding:12px;border-left:4px solid var(--accent);background:#0b1728;border-radius:12px}.quiz-box{background:#0b1728;border:1px solid var(--line);border-radius:14px;padding:14px;margin:12px 0}.quiz-box textarea{min-height:70px}.done{border-color:rgba(131,230,160,.6)}.lock,.locked{opacity:.9}.checkrow{display:flex;gap:10px;align-items:flex-start;margin:10px 0}.checkrow input{width:auto;margin-top:3px}.small{font-size:13px;color:var(--muted)}@media(max-width:760px){.two,.three{grid-template-columns:1fr}main{padding:14px}h2{font-size:24px}.bottom-nav{justify-content:flex-start}.topbar{align-items:flex-start}button{padding:10px 12px}}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:14px}table{width:100%;border-collapse:collapse;min-width:760px}th,td{padding:12px;border-bottom:1px solid var(--line);text-align:right;color:#dce8f7}th:first-child,td:first-child{text-align:left}th{background:#0b1728;color:var(--accent);font-size:13px;position:sticky;top:0}canvas{width:100%;max-height:420px;background:#0b1728;border:1px solid var(--line);border-radius:16px}.legend{display:flex;gap:16px;flex-wrap:wrap;margin-top:10px;color:var(--muted);font-size:13px}.legend i{display:inline-block;width:18px;height:4px;background:var(--accent);margin-right:6px;vertical-align:middle}.legend span:nth-child(2) i{background:#dce8f7}.metric-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.metric{background:#0b1728;border:1px solid var(--line);border-radius:14px;padding:12px}.metric b{display:block;color:var(--accent);font-size:22px}@media(max-width:760px){.metric-row{grid-template-columns:1fr 1fr}th,td{padding:9px;font-size:12px}}