:root{--steel: #4682b4;--steel-deep: #2f5d84;--steel-darker: #24475f;--steel-card: #3a6d99;--gold: #f2b33d;--gold-deep: #d4a017;--white: #ffffff;--ink: #1a1a1a;--radius: 18px;--font-title: "Poppins", sans-serif;--font-body: "Inter", sans-serif}*{margin:0;padding:0;box-sizing:border-box}html,body{min-height:100%}body{font-family:var(--font-body);color:var(--white);background:linear-gradient(160deg,var(--steel-deep) 0%,var(--steel) 55%,var(--steel-deep) 100%);background-attachment:fixed}#root{max-width:880px;margin:0 auto;padding:28px 20px 60px;min-height:100vh;display:flex;flex-direction:column}.app-header{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:28px}.app-header h1{font-family:var(--font-title);font-weight:800;font-size:clamp(1.4rem,4vw,2.1rem);text-transform:uppercase;letter-spacing:.02em;color:var(--gold);cursor:pointer;line-height:1.1}.app-header .subtitle{font-size:.9rem;color:#ffffffd9;margin-top:4px}.lang-toggle{display:flex;border:2px solid rgba(255,255,255,.35);border-radius:999px;overflow:hidden;flex-shrink:0}.lang-toggle button{font-family:var(--font-body);font-weight:700;font-size:.85rem;padding:7px 16px;border:none;background:transparent;color:#ffffffbf;cursor:pointer}.lang-toggle button.active{background:var(--gold);color:var(--ink)}.card{background:linear-gradient(155deg,var(--steel-card),var(--steel-darker));border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:24px;box-shadow:0 10px 30px #00000040}.module-grid{display:grid;gap:18px}.module-card{cursor:pointer;transition:transform .15s ease,box-shadow .15s ease;display:flex;flex-direction:column;gap:10px}.module-card:hover{transform:translateY(-3px);box-shadow:0 16px 36px #00000059}.module-card .module-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.module-emoji{font-size:2rem;line-height:1}.badge{font-weight:700;font-size:.75rem;padding:4px 12px;border-radius:999px;background:#ffffff24;color:var(--white);white-space:nowrap}.badge.done{background:var(--gold);color:var(--ink)}h2.module-title,h2.section-title{font-family:var(--font-title);font-weight:800;font-size:clamp(1.15rem,3vw,1.5rem);text-transform:uppercase;letter-spacing:.02em;color:var(--gold);line-height:1.15}.tagline{color:#ffffffe0;font-size:.95rem}.progress-track{height:10px;border-radius:999px;background:#0000004d;overflow:hidden}.progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--gold-deep),var(--gold));transition:width .35s ease}.progress-label{font-size:.8rem;font-weight:700;color:#ffffffd9;display:flex;justify-content:space-between;margin-bottom:6px}.lesson-list{display:flex;flex-direction:column;gap:10px;margin-top:18px}.lesson-row{display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:14px;background:#ffffff12;border:1px solid rgba(255,255,255,.1);cursor:pointer;transition:background .15s ease;text-align:left;width:100%;color:var(--white);font-family:var(--font-body);font-size:1rem}.lesson-row:hover{background:#ffffff24}.lesson-check{width:28px;height:28px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:700;border:2px solid rgba(255,255,255,.4);color:#ffffffb3}.lesson-check.done{background:var(--gold);border-color:var(--gold);color:var(--ink)}.lesson-row .lesson-name{font-weight:700}.lesson-intro{font-size:1.05rem;line-height:1.6;color:#fffffff2;margin:14px 0 20px}.bullet{display:flex;gap:12px;align-items:flex-start;padding:10px 0;line-height:1.55;font-weight:500}.bullet .emoji{flex-shrink:0;font-size:1.15rem;line-height:1.4}.lesson-images{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin-top:18px}.lesson-images figure{margin:0}.lesson-images img{width:100%;display:block;border-radius:14px;border:1px solid rgba(255,255,255,.18);box-shadow:0 8px 20px #0000004d}.lesson-images figcaption{margin-top:8px;font-size:.82rem;font-weight:600;color:#fffc;text-align:center}.pro-tip{margin-top:20px;padding:16px 18px;border-radius:14px;background:#f2b33d24;border:1px solid rgba(242,179,61,.5)}.pro-tip .tip-label{font-family:var(--font-title);font-weight:800;text-transform:uppercase;font-size:.8rem;letter-spacing:.06em;color:var(--gold);margin-bottom:6px}.btn{font-family:var(--font-body);font-weight:700;font-size:.95rem;padding:12px 22px;border-radius:999px;border:none;cursor:pointer;transition:transform .12s ease,opacity .12s ease}.btn:hover{transform:translateY(-1px)}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}.btn-gold{background:linear-gradient(135deg,var(--gold),var(--gold-deep));color:var(--ink)}.btn-ghost{background:#ffffff1f;color:var(--white);border:1px solid rgba(255,255,255,.3)}.btn-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.back-link{background:none;border:none;color:#fffc;font-family:var(--font-body);font-weight:700;font-size:.9rem;cursor:pointer;padding:0;margin-bottom:16px;display:inline-flex;align-items:center;gap:6px}.back-link:hover{color:var(--gold)}.quiz-option{display:block;width:100%;text-align:left;padding:14px 16px;border-radius:14px;border:2px solid rgba(255,255,255,.18);background:#ffffff12;color:var(--white);font-family:var(--font-body);font-size:.98rem;font-weight:500;cursor:pointer;margin-bottom:10px;transition:border-color .12s ease,background .12s ease;line-height:1.45}.quiz-option:hover:not(:disabled){border-color:#ffffff80}.quiz-option.selected{border-color:var(--gold);background:#f2b33d26}.quiz-option.correct{border-color:#6fd08c;background:#6fd08c2e}.quiz-option.wrong{border-color:#e8593c;background:#e8593c2e}.quiz-option:disabled{cursor:default}.quiz-feedback{margin:14px 0 6px;padding:14px 16px;border-radius:14px;background:#00000038;line-height:1.55}.quiz-feedback .verdict{font-family:var(--font-title);font-weight:800;text-transform:uppercase;font-size:.85rem;letter-spacing:.05em;margin-bottom:6px}.quiz-feedback .verdict.good{color:#6fd08c}.quiz-feedback .verdict.bad{color:#ffb4a1}.quiz-progress{font-size:.85rem;font-weight:700;color:#fffc;margin-bottom:14px}.quiz-question{font-size:1.1rem;font-weight:700;line-height:1.5;margin-bottom:18px}.score-big{font-family:var(--font-title);font-weight:800;font-size:3rem;color:var(--gold);text-align:center;margin:10px 0}.score-msg{text-align:center;font-size:1.05rem;margin-bottom:20px}.app-footer{margin-top:auto;padding-top:40px;text-align:center;font-size:.85rem;font-weight:500;color:#ffffffbf}.app-footer .reset{display:block;margin:10px auto 0;background:none;border:none;color:#ffffff73;font-size:.75rem;cursor:pointer;text-decoration:underline}.save-hint{margin-top:20px;text-align:center;font-weight:700;color:var(--gold);font-size:.9rem}@media (min-width: 640px){.module-grid{grid-template-columns:1fr}}