:root{--blue-deep:#0A0F6B;--blue-mid:#1C2FA3;--blue-light:#E9EDFF;--white:#FFFFFF;--text:#0f172a;--muted:#51607a;--success:#16a34a;--success-soft:#dcfce7;--danger:#b91c1c;--danger-soft:#fee2e2;--card:#ffffff;--shadow:0 16px 36px rgba(10,15,107,.12);--radius:24px}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:linear-gradient(180deg,var(--blue-light),#f8fbff);color:var(--text)}.container{max-width:1100px;margin:0 auto;padding:0 20px}.hero{background:linear-gradient(135deg,var(--blue-deep),var(--blue-mid));color:white;padding:30px 0 40px}.brand{display:flex;gap:14px;align-items:center}.logo-wrap{width:66px;height:66px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2)}.hero h1{margin:0;font-size:2rem}.hero p{margin:6px 0 0;opacity:.95}.hero-copy{margin-top:18px;max-width:760px}.hero-copy h2{margin:0 0 8px}.hero-stats{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.hero-stat{min-width:110px;padding:14px 16px;border-radius:18px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);text-align:center}.hero-stat span{display:block;font-size:1.5rem;font-weight:800}.hero-stat small{opacity:.9}.page{padding:24px 20px 56px}.summary-card,.unit-card-large,.lesson-card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid #dbe5ff;padding:22px}.summary-card{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:18px}.summary-actions{display:flex;gap:12px;flex-wrap:wrap}.badge-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}.badge{padding:10px 12px;border-radius:999px;background:#fff;border:1px solid #dbe5ff;box-shadow:var(--shadow);font-size:.92rem}.btn{appearance:none;border:none;border-radius:16px;padding:12px 16px;font:inherit;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}.btn-primary{background:var(--blue-deep);color:white}.btn-secondary{background:var(--blue-light);color:var(--blue-deep)}.eyebrow{font-size:.82rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 6px}.progress-bar{height:14px;background:#dbe5ff;border-radius:999px;overflow:hidden;margin-top:14px}.progress-fill{height:100%;width:0;background:linear-gradient(90deg,var(--success),#34d399);transition:width .35s ease}.units-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:18px}.unit-box{background:white;border:1px solid #dbe5ff;border-radius:22px;box-shadow:var(--shadow);padding:20px;display:flex;flex-direction:column;gap:12px}.unit-box h3{margin:0;color:var(--blue-deep)}.unit-box p{margin:0;color:var(--muted);line-height:1.55}.unit-meta{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}.tag{padding:8px 11px;border-radius:999px;background:var(--blue-light);color:var(--blue-deep);font-size:.88rem}.topbar,.lesson-topbar{background:var(--blue-deep);color:white}.topbar-inner,.lesson-topbar-inner{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:14px 0}.lesson-top-right{display:flex;gap:12px;align-items:center}.hearts{font-size:1.2rem}.back-link{color:white;text-decoration:none}.top-brand{font-weight:700}.lesson-progress-wrap{flex:1;max-width:420px}.lesson-progress-bar{height:12px;background:rgba(255,255,255,.2);border-radius:999px;overflow:hidden}.lesson-progress-fill{height:100%;width:0;background:#4ade80;transition:width .35s ease}.lesson-xp{font-weight:700}.unit-card-large{margin-bottom:22px}.lesson-path{display:grid;gap:16px}.lesson-node{background:white;border-radius:22px;border:1px solid #dbe5ff;box-shadow:var(--shadow);padding:18px;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}.lesson-main{display:flex;gap:14px;align-items:center}.circle{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;font-weight:800;background:var(--blue-light);color:var(--blue-deep)}.circle.done{background:var(--success-soft);color:#166534}.circle.locked{background:#e5e7eb;color:#64748b}.node-info h3{margin:0 0 6px}.node-info p{margin:0;color:var(--muted)}.status{padding:8px 11px;border-radius:999px;font-size:.85rem}.status.done{background:var(--success-soft);color:#166534}.status.open{background:#dbeafe;color:#1d4ed8}.status.locked{background:#e5e7eb;color:#64748b}.lesson-page{padding:26px 20px 56px;max-width:760px}.exercise-box{margin-top:16px;padding:18px;border-radius:18px;background:#f8fbff;border:1px solid #dbe5ff}.exercise-box p{margin:0 0 12px}.exercise-box input,.exercise-box button.choice-btn,.exercise-box .token-btn,.exercise-box select{width:100%;padding:13px 14px;border-radius:14px;border:1px solid #c7d2fe;font:inherit}.exercise-box input,.exercise-box select{background:#fff}.choice-list,.token-bank,.match-grid{display:grid;gap:10px}.choice-btn{background:#fff;text-align:left;cursor:pointer}.token-bank{grid-template-columns:repeat(auto-fit,minmax(110px,1fr))}.token-btn{background:#fff;cursor:pointer}.selected-answer{min-height:54px;padding:10px;border:1px dashed #94a3b8;border-radius:14px;background:#fff;margin-bottom:12px}.match-grid{grid-template-columns:1fr 1fr}.match-item,.match-select{padding:12px;border-radius:12px;border:1px solid #c7d2fe;background:#fff}.feedback-box{margin-top:16px;padding:12px 14px;border-radius:16px;font-weight:600}.feedback-box.ok{background:var(--success-soft);color:#166534}.feedback-box.bad{background:var(--danger-soft);color:var(--danger)}.hidden{display:none}.pulse{animation:pulse .45s ease}.shake{animation:shake .35s ease}.lesson-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}.finish-stats{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}.finish-stat{min-width:130px;background:#f8fbff;border:1px solid #dbe5ff;border-radius:18px;padding:16px;text-align:center}.finish-stat strong{display:block;font-size:1.5rem;color:var(--blue-deep)}.muted{color:var(--muted);line-height:1.55}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.03)}100%{transform:scale(1)}}@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}@media (max-width:700px){.summary-card{flex-direction:column;align-items:flex-start}.match-grid{grid-template-columns:1fr}.lesson-topbar-inner{flex-wrap:wrap}}