.container {
    text-align: center;
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.icon-box {
    font-size: 2rem;
    color: #1a1a1a;
    margin-bottom: 1.5rem;
    opacity: 0.8;
}

.title {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.05rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1rem;
    color: #666666;
    font-weight: 300;
    margin-bottom: 3rem;
}

.btn-start {
    display: inline-block;
    padding: 15px 40px;
    border: 1.5px solid #1a1a1a;
    border-radius: 30px; /* 부드러운 곡률 */
    font-size: 1.1rem;
    font-weight: 500;
    transition: all 0.2s ease-in-out; /* 현대적인 짧은 전환 */
}

/* PC용 Hover */
@media (hover: hover) {
    .btn-start:hover {
        background-color: #1a1a1a;
        color: #ffffff;
    }
}

/* 모바일용 Active (터치 시 반응) */
.btn-start:active {
    background-color: #1a1a1a;
    color: #ffffff;
    transform: scale(0.96); /* 살짝 눌리는 느낌 */
}