.tsv-box {
    max-width: 500px;
    margin: 40px auto;
    padding: 30px 35px;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    text-align: center;
    border: 1px solid #f0f0f0;
}

.tsv-box h2 {
    margin-bottom: 22px;
    font-weight: 700;
    font-size: 24px;
    color: #1a1a1a;
    letter-spacing: -0.3px;
}

.tsv-box input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e8e8e8;
    border-radius: 10px;
    margin-bottom: 18px;
    font-size: 15px;
    font-weight: 500;
    transition: border-color 0.2s ease;
    box-sizing: border-box;
    background: #fafafa;
}

.tsv-box input:focus {
    border-color: #000;
    outline: none;
    background: #fff;
}

.tsv-box button {
    padding: 14px 32px;
    border: none;
    border-radius: 10px;
    background: #000;
    color: white;
    cursor: pointer;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.3px;
    transition: all 0.2s ease;
}

.tsv-box button:hover {
    background: #2a2a2a;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.tsv-result {
    margin-top: 24px;
    font-weight: 600;
    font-size: 15px;
    color: #1a1a1a;
}