*{box-sizing:border-box}
body{margin:0;min-height:100vh;font-family:Arial,sans-serif;background:linear-gradient(135deg,#e8f5ff,#fff7df);color:#24324a}
.container{max-width:760px;margin:auto;padding:20px}.card{background:#fff;border-radius:28px;padding:28px;box-shadow:0 12px 35px rgba(40,70,100,.12)}
.home{text-align:center}.emoji{font-size:54px}h1{font-size:42px;margin:5px 0;color:#1769aa}.subtitle{font-size:19px;color:#64748b;margin:0 0 20px}.intro{font-size:18px;margin-bottom:25px}
.levels{display:grid;gap:13px}.level{display:grid;grid-template-columns:55px 1fr;grid-template-rows:1fr 1fr;align-items:center;text-align:left;text-decoration:none;color:#24324a;border:2px solid #dce7f0;border-radius:19px;padding:12px 16px;background:#fafdff}.level:hover{transform:translateY(-2px)}.level span{grid-row:1/3;font-size:31px;text-align:center}.level b{font-size:19px}.level small{color:#64748b}.level-5{border-color:#ffd66b;background:#fffaf0}.note{font-size:14px;color:#718096;margin-top:22px}
.badge{display:inline-block;background:#fff0a8;padding:7px 12px;border-radius:20px;font-weight:bold}.progress{height:10px;background:#e8eef5;border-radius:10px;overflow:hidden;margin:15px 0 24px}.progress span{display:block;height:100%;background:#39a0ed;transition:.3s}.question{font-size:23px;line-height:1.45;font-weight:bold;margin:22px 0}.options{display:grid;gap:12px}.option{border:2px solid #dbe5ef;background:#f9fbfd;border-radius:16px;padding:15px;font-size:18px;text-align:left;cursor:pointer}.option:hover,.option.selected{border-color:#1769aa;background:#e7f4ff}
button,.btn{border:0;border-radius:16px;padding:14px 22px;font-size:17px;font-weight:bold;cursor:pointer;text-decoration:none;display:inline-block}.primary{background:#1769aa;color:#fff}.primary:disabled{opacity:.45;cursor:not-allowed}.next{margin-top:22px;width:100%}
.result{text-align:center}.score{font-size:54px;font-weight:800;color:#1769aa;margin:10px}.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:24px 0}.result-box{background:#f5f9fc;border-radius:18px;padding:18px}.result-box b{display:block;font-size:30px}.correct{color:#16844a}.wrong{color:#d44747}.review{text-align:left;margin-top:24px}.review-item{padding:14px;border-radius:14px;background:#f8fafc;margin:10px 0}.small{font-size:14px;color:#64748b}.actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:18px}
@media(max-width:500px){.card{padding:20px}.question{font-size:20px}h1{font-size:36px}}