:root{--bg:#f6f7fb;--card:#fff;--ink:#111827;--muted:#667085;--line:#e6e8ef;--brand:#102a43;--brand2:#1d4ed8;--soft:#eef4ff;--warn:#fff7ed;--ok:#ecfdf3;--shadow:0 10px 30px rgba(17,24,39,.08)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.45;padding-bottom:76px}.topbar{position:sticky;top:0;z-index:4;background:rgba(246,247,251,.92);backdrop-filter:blur(14px);padding:18px 16px 12px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.eyebrow,.kicker{font-size:11px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);font-weight:700}.topbar h1{font-size:22px;margin:2px 0 0}.chip{background:var(--brand);color:#fff;text-decoration:none;border-radius:999px;padding:8px 12px;font-size:12px;font-weight:800}.tabs{display:flex;gap:8px;overflow:auto;padding:10px 14px;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:73px;z-index:3}.tabs a{white-space:nowrap;text-decoration:none;color:var(--muted);padding:8px 12px;border-radius:999px;font-weight:700;font-size:13px}.tabs a.active{background:var(--soft);color:var(--brand2)}.wrap{max-width:820px;margin:0 auto;padding:14px}.card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:18px;margin-bottom:14px;box-shadow:var(--shadow)}.hero h2{font-size:26px;line-height:1.12;margin:8px 0}.hero p,.intro p{color:var(--muted);margin-bottom:0}.grid{display:grid;gap:12px}.module-card{display:flex;gap:14px;align-items:flex-start;text-decoration:none;color:inherit;background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px;box-shadow:var(--shadow)}.module-card .num{background:var(--soft);color:var(--brand2);border-radius:14px;padding:8px 9px;font-weight:900;font-size:12px}.module-card h3{margin:0 0 4px;font-size:17px}.module-card p{margin:0;color:var(--muted);font-size:14px}.lesson h2,.intro h2,.compact h2{margin:0 0 10px;font-size:22px}.lesson-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.badge{background:var(--brand);color:#fff;border-radius:999px;padding:6px 10px;font-size:12px;font-weight:800}.small{font-size:12px;color:var(--muted)}.memory{background:linear-gradient(180deg,#eef4ff,#f8fbff);border:1px solid #dbeafe;border-radius:16px;padding:12px;margin:12px 0;font-weight:800;color:#173b6c}.lesson h3,.compact h3{font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:22px 0 8px}.clean-list{margin:0;padding:0;list-style:none}.clean-list li{padding:10px 0 10px 26px;border-bottom:1px solid var(--line);position:relative}.clean-list li:before{content:"";position:absolute;left:2px;top:17px;width:9px;height:9px;border-radius:50%;background:var(--brand2)}.clean-list.accent li:before{background:#059669}.clean-list.warn li:before{background:#f97316}.questions details,.qa{border-radius:18px}.questions summary{cursor:pointer;font-weight:800;padding:15px 4px;list-style:none}.questions details{border:1px solid var(--line);background:#fff;margin-bottom:10px;padding:0 12px}.questions details[open]{background:#fbfdff}.questions p{color:var(--muted);margin:0 0 14px}.compact{padding:16px}.form{display:grid;gap:12px}.form label{font-weight:800;color:#344054;font-size:13px}.form input,textarea{width:100%;margin-top:6px;border:1px solid var(--line);border-radius:14px;padding:12px;font-size:16px;background:#fff}textarea{height:260px;resize:vertical}button{border:0;background:var(--brand2);color:#fff;border-radius:14px;padding:12px 14px;font-weight:900;font-size:15px}.linkbtn{background:transparent;color:#b42318;padding:4px;font-size:12px}.table-card{overflow:auto}table{width:100%;border-collapse:collapse;font-size:14px}th{text-align:left;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.06em}td,th{padding:12px;border-bottom:1px solid var(--line)}.bottom{position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--line);display:flex;justify-content:space-around;padding:8px 8px env(safe-area-inset-bottom);z-index:5}.bottom a{text-decoration:none;color:var(--brand);font-weight:800;font-size:13px;padding:10px 12px;border-radius:14px}@media(min-width:720px){.grid{grid-template-columns:1fr 1fr}.topbar h1{font-size:26px}.tabs{justify-content:center;top:81px}.wrap{padding:22px}.bottom{display:none}body{padding-bottom:0}}