body{background:#f5f7fb}.navbar-brand{font-weight:700}.card{border:0;border-radius:16px;box-shadow:0 8px 24px rgba(0,0,0,.06)}.btn{border-radius:10px}.form-control,.form-select{border-radius:10px;padding:.7rem}.hero{padding:70px 0}.question-card{margin-bottom:18px}.stat{font-size:2rem;font-weight:700}